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 *) Added newline escaping functionality to a filename when using openssl dgst.
13 This output format is to replicate the output format found in the '*sum'
14 checksum programs. This aims to preserve backward compatibility.
15 [Matt Eaton, Richard Levitte, and Paul Dale]
17 *) Removed the heartbeat message in DTLS feature, as it has very
18 little usage and doesn't seem to fulfill a valuable purpose.
19 The configuration option is now deprecated.
22 *) Changed the output of 'openssl {digestname} < file' to display the
23 digest name in its output.
26 *) Added a new generic trace API which provides support for enabling
27 instrumentation through trace output. This feature is mainly intended
28 as an aid for developers and is disabled by default. To utilize it,
29 OpenSSL needs to be configured with the `enable-trace` option.
31 If the tracing API is enabled, the application can activate trace output
32 by registering BIOs as trace channels for a number of tracing and debugging
35 The 'openssl' application has been expanded to enable any of the types
36 available via environment variables defined by the user, and serves as
37 one possible example on how to use this functionality.
38 [Richard Levitte & Matthias St. Pierre]
40 *) Added build tests for C++. These are generated files that only do one
41 thing, to include one public OpenSSL head file each. This tests that
42 the public header files can be usefully included in a C++ application.
44 This test isn't enabled by default. It can be enabled with the option
45 'enable-buildtest-c++'.
48 *) Add Single Step KDF (EVP_KDF_SS) to EVP_KDF.
51 *) Add KMAC to EVP_MAC.
54 *) Added property based algorithm implementation selection framework to
58 *) Added SCA hardening for modular field inversion in EC_GROUP through
59 a new dedicated field_inv() pointer in EC_METHOD.
60 This also addresses a leakage affecting conversions from projective
61 to affine coordinates.
62 [Billy Bob Brumley, Nicola Tuveri]
64 *) Added EVP_KDF, an EVP layer KDF API, to simplify adding KDF and PRF
65 implementations. This includes an EVP_PKEY to EVP_KDF bridge for
66 those algorithms that were already supported through the EVP_PKEY API
67 (scrypt, TLS1 PRF and HKDF). The low-level KDF functions for PBKDF2
68 and scrypt are now wrappers that call EVP_KDF.
71 *) Build devcrypto engine as a dynamic engine.
74 *) Add keyed BLAKE2 to EVP_MAC.
77 *) Fix a bug in the computation of the endpoint-pair shared secret used
78 by DTLS over SCTP. This breaks interoperability with older versions
79 of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime
80 switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling
81 interoperability with such broken implementations. However, enabling
82 this switch breaks interoperability with correct implementations.
84 *) Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
85 re-used X509_PUBKEY object if the second PUBKEY is malformed.
88 *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
91 *) Change the license to the Apache License v2.0.
94 *) Change the possible version information given with OPENSSL_API_COMPAT.
95 It may be a pre-3.0.0 style numerical version number as it was defined
96 in 1.1.0, and it may also simply take the major version number.
98 Because of the version numbering of pre-3.0.0 releases, the values 0,
99 1 and 2 are equivalent to 0x00908000L (0.9.8), 0x10000000L (1.0.0) and
100 0x10100000L (1.1.0), respectively.
103 *) Switch to a new version scheme using three numbers MAJOR.MINOR.PATCH.
105 o Major releases (indicated by incrementing the MAJOR release number)
106 may introduce incompatible API/ABI changes.
107 o Minor releases (indicated by incrementing the MINOR release number)
108 may introduce new features but retain API/ABI compatibility.
109 o Patch releases (indicated by incrementing the PATCH number)
110 are intended for bug fixes and other improvements of existing
111 features only (like improving performance or adding documentation)
112 and retain API/ABI compatibility.
115 *) Add support for RFC5297 SIV mode (siv128), including AES-SIV.
118 *) Remove the 'dist' target and add a tarball building script. The
119 'dist' target has fallen out of use, and it shouldn't be
120 necessary to configure just to create a source distribution.
123 *) Recreate the OS390-Unix config target. It no longer relies on a
124 special script like it did for OpenSSL pre-1.1.0.
127 *) Instead of having the source directories listed in Configure, add
128 a 'build.info' keyword SUBDIRS to indicate what sub-directories to
132 *) Add GMAC to EVP_MAC.
135 *) Ported the HMAC, CMAC and SipHash EVP_PKEY_METHODs to EVP_MAC.
138 *) Added EVP_MAC, an EVP layer MAC API, to simplify adding MAC
139 implementations. This includes a generic EVP_PKEY to EVP_MAC bridge,
140 to facilitate the continued use of MACs through raw private keys in
141 functionality such as EVP_DigestSign* and EVP_DigestVerify*.
144 *) Deprecate ECDH_KDF_X9_62() and mark its replacement as internal. Users
145 should use the EVP interface instead (EVP_PKEY_CTX_set_ecdh_kdf_type).
148 *) Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for
149 the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names
150 are retained for backwards compatibility.
153 *) AES-XTS mode now enforces that its two keys are different to mitigate
154 the attacked described in "Efficient Instantiations of Tweakable
155 Blockciphers and Refinements to Modes OCB and PMAC" by Phillip Rogaway.
156 Details of this attack can be obtained from:
157 http://web.cs.ucdavis.edu/%7Erogaway/papers/offsets.pdf
160 *) Rename the object files, i.e. give them other names than in previous
161 versions. Their names now include the name of the final product, as
162 well as its type mnemonic (bin, lib, shlib).
165 *) Added new option for 'openssl list', '-objects', which will display the
166 list of built in objects, i.e. OIDs with names.
169 *) Added support for Linux Kernel TLS data-path. The Linux Kernel data-path
170 improves application performance by removing data copies and providing
171 applications with zero-copy system calls such as sendfile and splice.
174 Changes between 1.1.1a and 1.1.1b [xx XXX xxxx]
176 *) Change the info callback signals for the start and end of a post-handshake
177 message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START
178 and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get
179 confused by this and assume that a TLSv1.2 renegotiation has started. This
180 can break KeyUpdate handling. Instead we no longer signal the start and end
181 of a post handshake message exchange (although the messages themselves are
182 still signalled). This could break some applications that were expecting
183 the old signals. However without this KeyUpdate is not usable for many
187 Changes between 1.1.1 and 1.1.1a [20 Nov 2018]
189 *) Timing vulnerability in DSA signature generation
191 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
192 timing side channel attack. An attacker could use variations in the signing
193 algorithm to recover the private key.
195 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
199 *) Timing vulnerability in ECDSA signature generation
201 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
202 timing side channel attack. An attacker could use variations in the signing
203 algorithm to recover the private key.
205 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
209 *) Fixed the issue that RAND_add()/RAND_seed() silently discards random input
210 if its length exceeds 4096 bytes. The limit has been raised to a buffer size
211 of two gigabytes and the error handling improved.
213 This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been
214 categorized as a normal bug, not a security issue, because the DRBG reseeds
215 automatically and is fully functional even without additional randomness
216 provided by the application.
218 Changes between 1.1.0i and 1.1.1 [11 Sep 2018]
220 *) Add a new ClientHello callback. Provides a callback interface that gives
221 the application the ability to adjust the nascent SSL object at the
222 earliest stage of ClientHello processing, immediately after extensions have
223 been collected but before they have been processed. In particular, this
224 callback can adjust the supported TLS versions in response to the contents
228 *) Add SM2 base algorithm support.
231 *) s390x assembly pack: add (improved) hardware-support for the following
232 cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb,
233 aes-cfb/cfb8, aes-ecb.
236 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
237 parameter is no longer accepted, as it leads to a corrupt table. NULL
238 pem_str is reserved for alias entries only.
241 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
242 step for prime curves. The new implementation is based on formulae from
243 differential addition-and-doubling in homogeneous projective coordinates
244 from Izu-Takagi "A fast parallel elliptic curve multiplication resistant
245 against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves
246 and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified
247 to work in projective coordinates.
248 [Billy Bob Brumley, Nicola Tuveri]
250 *) Change generating and checking of primes so that the error rate of not
251 being prime depends on the intended use based on the size of the input.
252 For larger primes this will result in more rounds of Miller-Rabin.
253 The maximal error rate for primes with more than 1080 bits is lowered
255 [Kurt Roeckx, Annie Yousar]
257 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
260 *) The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
261 moving between systems, and to avoid confusion when a Windows build is
262 done with mingw vs with MSVC. For POSIX installs, there's still a
263 symlink or copy named 'tsget' to avoid that confusion as well.
266 *) Revert blinding in ECDSA sign and instead make problematic addition
267 length-invariant. Switch even to fixed-length Montgomery multiplication.
270 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
271 step for binary curves. The new implementation is based on formulae from
272 differential addition-and-doubling in mixed Lopez-Dahab projective
273 coordinates, modified to independently blind the operands.
274 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
276 *) Add a scaffold to optionally enhance the Montgomery ladder implementation
277 for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing
278 EC_METHODs to implement their own specialized "ladder step", to take
279 advantage of more favorable coordinate systems or more efficient
280 differential addition-and-doubling algorithms.
281 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
283 *) Modified the random device based seed sources to keep the relevant
284 file descriptors open rather than reopening them on each access.
285 This allows such sources to operate in a chroot() jail without
286 the associated device nodes being available. This behaviour can be
287 controlled using RAND_keep_random_devices_open().
290 *) Numerous side-channel attack mitigations have been applied. This may have
291 performance impacts for some algorithms for the benefit of improved
292 security. Specific changes are noted in this change log by their respective
296 *) AIX shared library support overhaul. Switch to AIX "natural" way of
297 handling shared libraries, which means collecting shared objects of
298 different versions and bitnesses in one common archive. This allows to
299 mitigate conflict between 1.0 and 1.1 side-by-side installations. It
300 doesn't affect the way 3rd party applications are linked, only how
301 multi-version installation is managed.
304 *) Make ec_group_do_inverse_ord() more robust and available to other
305 EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
306 mitigations are applied to the fallback BN_mod_inverse().
307 When using this function rather than BN_mod_inverse() directly, new
308 EC cryptosystem implementations are then safer-by-default.
311 *) Add coordinate blinding for EC_POINT and implement projective
312 coordinate blinding for generic prime curves as a countermeasure to
313 chosen point SCA attacks.
314 [Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley]
316 *) Add blinding to ECDSA and DSA signatures to protect against side channel
317 attacks discovered by Keegan Ryan (NCC Group).
320 *) Enforce checking in the pkeyutl command line app to ensure that the input
321 length does not exceed the maximum supported digest length when performing
322 a sign, verify or verifyrecover operation.
325 *) SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
326 I/O in combination with something like select() or poll() will hang. This
327 can be turned off again using SSL_CTX_clear_mode().
328 Many applications do not properly handle non-application data records, and
329 TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
330 around the problems in those applications, but can also break some.
331 It's recommended to read the manpages about SSL_read(), SSL_write(),
332 SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
333 SSL_CTX_set_read_ahead() again.
336 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
337 now allow empty (zero character) pass phrases.
340 *) Apply blinding to binary field modular inversion and remove patent
341 pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
344 *) Deprecate ec2_mult.c and unify scalar multiplication code paths for
345 binary and prime elliptic curves.
348 *) Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
349 constant time fixed point multiplication.
352 *) Revise elliptic curve scalar multiplication with timing attack
353 defenses: ec_wNAF_mul redirects to a constant time implementation
354 when computing fixed point and variable point multiplication (which
355 in OpenSSL are mostly used with secret scalars in keygen, sign,
356 ECDH derive operations).
357 [Billy Bob Brumley, Nicola Tuveri, Cesar Pereida GarcÃa,
360 *) Updated CONTRIBUTING
363 *) Updated DRBG / RAND to request nonce and additional low entropy
364 randomness from the system.
365 [Matthias St. Pierre]
367 *) Updated 'openssl rehash' to use OpenSSL consistent default.
370 *) Moved the load of the ssl_conf module to libcrypto, which helps
371 loading engines that libssl uses before libssl is initialised.
374 *) Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
377 *) Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
378 [Ingo Schwarze, Rich Salz]
380 *) Added output of accepting IP address and port for 'openssl s_server'
383 *) Added a new API for TLSv1.3 ciphersuites:
384 SSL_CTX_set_ciphersuites()
385 SSL_set_ciphersuites()
388 *) Memory allocation failures consistenly add an error to the error
392 *) Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
393 in libcrypto when run as setuid/setgid.
396 *) Load any config file by default when libssl is used.
399 *) Added new public header file <openssl/rand_drbg.h> and documentation
400 for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
401 [Matthias St. Pierre]
403 *) QNX support removed (cannot find contributors to get their approval
404 for the license change).
407 *) TLSv1.3 replay protection for early data has been implemented. See the
408 SSL_read_early_data() man page for further details.
411 *) Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
412 configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
413 below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
414 In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
415 would otherwise inadvertently disable all TLSv1.3 ciphersuites the
416 configuration has been separated out. See the ciphers man page or the
417 SSL_CTX_set_ciphersuites() man page for more information.
420 *) On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
421 in responder mode now supports the new "-multi" option, which
422 spawns the specified number of child processes to handle OCSP
423 requests. The "-timeout" option now also limits the OCSP
424 responder's patience to wait to receive the full client request
425 on a newly accepted connection. Child processes are respawned
426 as needed, and the CA index file is automatically reloaded
427 when changed. This makes it possible to run the "ocsp" responder
428 as a long-running service, making the OpenSSL CA somewhat more
429 feature-complete. In this mode, most diagnostic messages logged
430 after entering the event loop are logged via syslog(3) rather than
434 *) Added support for X448 and Ed448. Heavily based on original work by
438 *) Extend OSSL_STORE with capabilities to search and to narrow the set of
439 objects loaded. This adds the functions OSSL_STORE_expect() and
440 OSSL_STORE_find() as well as needed tools to construct searches and
441 get the search data out of them.
444 *) Support for TLSv1.3 added. Note that users upgrading from an earlier
445 version of OpenSSL should review their configuration settings to ensure
446 that they are still appropriate for TLSv1.3. For further information see:
447 https://wiki.openssl.org/index.php/TLS1.3
450 *) Grand redesign of the OpenSSL random generator
452 The default RAND method now utilizes an AES-CTR DRBG according to
453 NIST standard SP 800-90Ar1. The new random generator is essentially
454 a port of the default random generator from the OpenSSL FIPS 2.0
455 object module. It is a hybrid deterministic random bit generator
456 using an AES-CTR bit stream and which seeds and reseeds itself
457 automatically using trusted system entropy sources.
459 Some of its new features are:
460 o Support for multiple DRBG instances with seed chaining.
461 o The default RAND method makes use of a DRBG.
462 o There is a public and private DRBG instance.
463 o The DRBG instances are fork-safe.
464 o Keep all global DRBG instances on the secure heap if it is enabled.
465 o The public and private DRBG instance are per thread for lock free
467 [Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre]
469 *) Changed Configure so it only says what it does and doesn't dump
470 so much data. Instead, ./configdata.pm should be used as a script
471 to display all sorts of configuration data.
474 *) Added processing of "make variables" to Configure.
477 *) Added SHA512/224 and SHA512/256 algorithm support.
480 *) The last traces of Netware support, first removed in 1.1.0, have
484 *) Get rid of Makefile.shared, and in the process, make the processing
485 of certain files (rc.obj, or the .def/.map/.opt files produced from
486 the ordinal files) more visible and hopefully easier to trace and
487 debug (or make silent).
490 *) Make it possible to have environment variable assignments as
491 arguments to config / Configure.
494 *) Add multi-prime RSA (RFC 8017) support.
497 *) Add SM3 implemented according to GB/T 32905-2016
498 [ Jack Lloyd <jack.lloyd@ribose.com>,
499 Ronald Tse <ronald.tse@ribose.com>,
500 Erick Borsboom <erick.borsboom@ribose.com> ]
502 *) Add 'Maximum Fragment Length' TLS extension negotiation and support
503 as documented in RFC6066.
504 Based on a patch from Tomasz Moń
505 [Filipe Raimundo da Silva]
507 *) Add SM4 implemented according to GB/T 32907-2016.
508 [ Jack Lloyd <jack.lloyd@ribose.com>,
509 Ronald Tse <ronald.tse@ribose.com>,
510 Erick Borsboom <erick.borsboom@ribose.com> ]
512 *) Reimplement -newreq-nodes and ERR_error_string_n; the
513 original author does not agree with the license change.
516 *) Add ARIA AEAD TLS support.
519 *) Some macro definitions to support VS6 have been removed. Visual
520 Studio 6 has not worked since 1.1.0
523 *) Add ERR_clear_last_mark(), to allow callers to clear the last mark
524 without clearing the errors.
527 *) Add "atfork" functions. If building on a system that without
528 pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application
529 requirements. The RAND facility now uses/requires this.
535 *) The UI API becomes a permanent and integral part of libcrypto, i.e.
536 not possible to disable entirely. However, it's still possible to
537 disable the console reading UI method, UI_OpenSSL() (use UI_null()
540 To disable, configure with 'no-ui-console'. 'no-ui' is still
541 possible to use as an alias. Check at compile time with the
542 macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still
543 possible to check and is an alias for OPENSSL_NO_UI_CONSOLE.
546 *) Add a STORE module, which implements a uniform and URI based reader of
547 stores that can contain keys, certificates, CRLs and numerous other
548 objects. The main API is loosely based on a few stdio functions,
549 and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof,
550 OSSL_STORE_error and OSSL_STORE_close.
551 The implementation uses backends called "loaders" to implement arbitrary
552 URI schemes. There is one built in "loader" for the 'file' scheme.
555 *) Add devcrypto engine. This has been implemented against cryptodev-linux,
556 then adjusted to work on FreeBSD 8.4 as well.
557 Enable by configuring with 'enable-devcryptoeng'. This is done by default
558 on BSD implementations, as cryptodev.h is assumed to exist on all of them.
561 *) Module names can prefixed with OSSL_ or OPENSSL_. This affects
562 util/mkerr.pl, which is adapted to allow those prefixes, leading to
563 error code calls like this:
565 OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER);
567 With this change, we claim the namespaces OSSL and OPENSSL in a manner
568 that can be encoded in C. For the foreseeable future, this will only
570 [Richard Levitte and Tim Hudson]
572 *) Removed BSD cryptodev engine.
575 *) Add a build target 'build_all_generated', to build all generated files
576 and only that. This can be used to prepare everything that requires
577 things like perl for a system that lacks perl and then move everything
578 to that system and do the rest of the build there.
581 *) In the UI interface, make it possible to duplicate the user data. This
582 can be used by engines that need to retain the data for a longer time
583 than just the call where this user data is passed.
586 *) Ignore the '-named_curve auto' value for compatibility of applications
588 [Tomas Mraz <tmraz@fedoraproject.org>]
590 *) Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2
591 bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such
592 alerts across multiple records (some of which could be empty). In practice
593 it make no sense to send an empty alert record, or to fragment one. TLSv1.3
594 prohibts this altogether and other libraries (BoringSSL, NSS) do not
595 support this at all. Supporting it adds significant complexity to the
596 record layer, and its removal is unlikely to cause inter-operability
600 *) Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed
601 with Z. These are meant to replace LONG and ZLONG and to be size safe.
602 The use of LONG and ZLONG is discouraged and scheduled for deprecation
606 *) Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string,
607 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t.
608 [Richard Levitte, Andy Polyakov]
610 *) Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine()
614 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
615 platform rather than 'mingw'.
618 *) The functions X509_STORE_add_cert and X509_STORE_add_crl return
619 success if they are asked to add an object which already exists
620 in the store. This change cascades to other functions which load
621 certificates and CRLs.
624 *) x86_64 assembly pack: annotate code with DWARF CFI directives to
625 facilitate stack unwinding even from assembly subroutines.
628 *) Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN.
629 Also remove OPENSSL_GLOBAL entirely, as it became a no-op.
632 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
633 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
634 which is the minimum version we support.
637 *) Certificate time validation (X509_cmp_time) enforces stricter
638 compliance with RFC 5280. Fractional seconds and timezone offsets
639 are no longer allowed.
642 *) Add support for ARIA
645 *) s_client will now send the Server Name Indication (SNI) extension by
646 default unless the new "-noservername" option is used. The server name is
647 based on the host provided to the "-connect" option unless overridden by
651 *) Add support for SipHash
654 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0
655 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
656 prevent issues where no progress is being made and the peer continually
657 sends unrecognised record types, using up resources processing them.
660 *) 'openssl passwd' can now produce SHA256 and SHA512 based output,
661 using the algorithm defined in
662 https://www.akkadia.org/drepper/SHA-crypt.txt
665 *) Heartbeat support has been removed; the ABI is changed for now.
666 [Richard Levitte, Rich Salz]
668 *) Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
671 *) The RSA "null" method, which was partially supported to avoid patent
672 issues, has been replaced to always returns NULL.
676 Changes between 1.1.0h and 1.1.0i [xx XXX xxxx]
678 *) Client DoS due to large DH parameter
680 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
681 malicious server can send a very large prime value to the client. This will
682 cause the client to spend an unreasonably long period of time generating a
683 key for this prime resulting in a hang until the client has finished. This
684 could be exploited in a Denial Of Service attack.
686 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
690 *) Cache timing vulnerability in RSA Key Generation
692 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
693 a cache timing side channel attack. An attacker with sufficient access to
694 mount cache timing attacks during the RSA key generation process could
695 recover the private key.
697 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
698 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
702 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
703 parameter is no longer accepted, as it leads to a corrupt table. NULL
704 pem_str is reserved for alias entries only.
707 *) Revert blinding in ECDSA sign and instead make problematic addition
708 length-invariant. Switch even to fixed-length Montgomery multiplication.
711 *) Change generating and checking of primes so that the error rate of not
712 being prime depends on the intended use based on the size of the input.
713 For larger primes this will result in more rounds of Miller-Rabin.
714 The maximal error rate for primes with more than 1080 bits is lowered
716 [Kurt Roeckx, Annie Yousar]
718 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
721 *) Add blinding to ECDSA and DSA signatures to protect against side channel
722 attacks discovered by Keegan Ryan (NCC Group).
725 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
726 now allow empty (zero character) pass phrases.
729 *) Certificate time validation (X509_cmp_time) enforces stricter
730 compliance with RFC 5280. Fractional seconds and timezone offsets
731 are no longer allowed.
734 *) Fixed a text canonicalisation bug in CMS
736 Where a CMS detached signature is used with text content the text goes
737 through a canonicalisation process first prior to signing or verifying a
738 signature. This process strips trailing space at the end of lines, converts
739 line terminators to CRLF and removes additional trailing line terminators
740 at the end of a file. A bug in the canonicalisation process meant that
741 some characters, such as form-feed, were incorrectly treated as whitespace
742 and removed. This is contrary to the specification (RFC5485). This fix
743 could mean that detached text data signed with an earlier version of
744 OpenSSL 1.1.0 may fail to verify using the fixed version, or text data
745 signed with a fixed OpenSSL may fail to verify with an earlier version of
746 OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data
747 and use the "-binary" flag (for the "cms" command line application) or set
748 the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()).
751 Changes between 1.1.0g and 1.1.0h [27 Mar 2018]
753 *) Constructed ASN.1 types with a recursive definition could exceed the stack
755 Constructed ASN.1 types with a recursive definition (such as can be found
756 in PKCS7) could eventually exceed the stack given malicious input with
757 excessive recursion. This could result in a Denial Of Service attack. There
758 are no such structures used within SSL/TLS that come from untrusted sources
759 so this is considered safe.
761 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
766 *) Incorrect CRYPTO_memcmp on HP-UX PA-RISC
768 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
769 effectively reduced to only comparing the least significant bit of each
770 byte. This allows an attacker to forge messages that would be considered as
771 authenticated in an amount of tries lower than that guaranteed by the
772 security claims of the scheme. The module can only be compiled by the
773 HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
775 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
780 *) Add a build target 'build_all_generated', to build all generated files
781 and only that. This can be used to prepare everything that requires
782 things like perl for a system that lacks perl and then move everything
783 to that system and do the rest of the build there.
786 *) Backport SSL_OP_NO_RENGOTIATION
788 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
789 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
790 changes this is no longer possible in 1.1.0. Therefore the new
791 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
792 1.1.0 to provide equivalent functionality.
794 Note that if an application built against 1.1.0h headers (or above) is run
795 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
796 accepted but nothing will happen, i.e. renegotiation will not be prevented.
799 *) Removed the OS390-Unix config target. It relied on a script that doesn't
803 *) rsaz_1024_mul_avx2 overflow bug on x86_64
805 There is an overflow bug in the AVX2 Montgomery multiplication procedure
806 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
807 Analysis suggests that attacks against RSA and DSA as a result of this
808 defect would be very difficult to perform and are not believed likely.
809 Attacks against DH1024 are considered just feasible, because most of the
810 work necessary to deduce information about a private key may be performed
811 offline. The amount of resources required for such an attack would be
812 significant. However, for an attack on TLS to be meaningful, the server
813 would have to share the DH1024 private key among multiple clients, which is
814 no longer an option since CVE-2016-0701.
816 This only affects processors that support the AVX2 but not ADX extensions
817 like Intel Haswell (4th generation).
819 This issue was reported to OpenSSL by David Benjamin (Google). The issue
820 was originally found via the OSS-Fuzz project.
824 Changes between 1.1.0f and 1.1.0g [2 Nov 2017]
826 *) bn_sqrx8x_internal carry bug on x86_64
828 There is a carry propagating bug in the x86_64 Montgomery squaring
829 procedure. No EC algorithms are affected. Analysis suggests that attacks
830 against RSA and DSA as a result of this defect would be very difficult to
831 perform and are not believed likely. Attacks against DH are considered just
832 feasible (although very difficult) because most of the work necessary to
833 deduce information about a private key may be performed offline. The amount
834 of resources required for such an attack would be very significant and
835 likely only accessible to a limited number of attackers. An attacker would
836 additionally need online access to an unpatched system using the target
837 private key in a scenario with persistent DH parameters and a private
838 key that is shared between multiple clients.
840 This only affects processors that support the BMI1, BMI2 and ADX extensions
841 like Intel Broadwell (5th generation) and later or AMD Ryzen.
843 This issue was reported to OpenSSL by the OSS-Fuzz project.
847 *) Malformed X.509 IPAddressFamily could cause OOB read
849 If an X.509 certificate has a malformed IPAddressFamily extension,
850 OpenSSL could do a one-byte buffer overread. The most likely result
851 would be an erroneous display of the certificate in text format.
853 This issue was reported to OpenSSL by the OSS-Fuzz project.
857 Changes between 1.1.0e and 1.1.0f [25 May 2017]
859 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
860 platform rather than 'mingw'.
863 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
864 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
865 which is the minimum version we support.
868 Changes between 1.1.0d and 1.1.0e [16 Feb 2017]
870 *) Encrypt-Then-Mac renegotiation crash
872 During a renegotiation handshake if the Encrypt-Then-Mac extension is
873 negotiated where it was not in the original handshake (or vice-versa) then
874 this can cause OpenSSL to crash (dependant on ciphersuite). Both clients
875 and servers are affected.
877 This issue was reported to OpenSSL by Joe Orton (Red Hat).
881 Changes between 1.1.0c and 1.1.0d [26 Jan 2017]
883 *) Truncated packet could crash via OOB read
885 If one side of an SSL/TLS path is running on a 32-bit host and a specific
886 cipher is being used, then a truncated packet can cause that host to
887 perform an out-of-bounds read, usually resulting in a crash.
889 This issue was reported to OpenSSL by Robert Święcki of Google.
893 *) Bad (EC)DHE parameters cause a client crash
895 If a malicious server supplies bad parameters for a DHE or ECDHE key
896 exchange then this can result in the client attempting to dereference a
897 NULL pointer leading to a client crash. This could be exploited in a Denial
900 This issue was reported to OpenSSL by Guido Vranken.
904 *) BN_mod_exp may produce incorrect results on x86_64
906 There is a carry propagating bug in the x86_64 Montgomery squaring
907 procedure. No EC algorithms are affected. Analysis suggests that attacks
908 against RSA and DSA as a result of this defect would be very difficult to
909 perform and are not believed likely. Attacks against DH are considered just
910 feasible (although very difficult) because most of the work necessary to
911 deduce information about a private key may be performed offline. The amount
912 of resources required for such an attack would be very significant and
913 likely only accessible to a limited number of attackers. An attacker would
914 additionally need online access to an unpatched system using the target
915 private key in a scenario with persistent DH parameters and a private
916 key that is shared between multiple clients. For example this can occur by
917 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
918 similar to CVE-2015-3193 but must be treated as a separate problem.
920 This issue was reported to OpenSSL by the OSS-Fuzz project.
924 Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
926 *) ChaCha20/Poly1305 heap-buffer-overflow
928 TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to
929 a DoS attack by corrupting larger payloads. This can result in an OpenSSL
930 crash. This issue is not considered to be exploitable beyond a DoS.
932 This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
936 *) CMS Null dereference
938 Applications parsing invalid CMS structures can crash with a NULL pointer
939 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
940 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
941 structure callback if an attempt is made to free certain invalid encodings.
942 Only CHOICE structures using a callback which do not handle NULL value are
945 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
949 *) Montgomery multiplication may produce incorrect results
951 There is a carry propagating bug in the Broadwell-specific Montgomery
952 multiplication procedure that handles input lengths divisible by, but
953 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
954 and DH private keys are impossible. This is because the subroutine in
955 question is not used in operations with the private key itself and an input
956 of the attacker's direct choice. Otherwise the bug can manifest itself as
957 transient authentication and key negotiation failures or reproducible
958 erroneous outcome of public-key operations with specially crafted input.
959 Among EC algorithms only Brainpool P-512 curves are affected and one
960 presumably can attack ECDH key negotiation. Impact was not analyzed in
961 detail, because pre-requisites for attack are considered unlikely. Namely
962 multiple clients have to choose the curve in question and the server has to
963 share the private key among them, neither of which is default behaviour.
964 Even then only clients that chose the curve will be affected.
966 This issue was publicly reported as transient failures and was not
967 initially recognized as a security issue. Thanks to Richard Morgan for
968 providing reproducible case.
972 *) Removed automatic addition of RPATH in shared libraries and executables,
973 as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
976 Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
978 *) Fix Use After Free for large message sizes
980 The patch applied to address CVE-2016-6307 resulted in an issue where if a
981 message larger than approx 16k is received then the underlying buffer to
982 store the incoming message is reallocated and moved. Unfortunately a
983 dangling pointer to the old location is left which results in an attempt to
984 write to the previously freed location. This is likely to result in a
985 crash, however it could potentially lead to execution of arbitrary code.
987 This issue only affects OpenSSL 1.1.0a.
989 This issue was reported to OpenSSL by Robert Święcki.
993 Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
995 *) OCSP Status Request extension unbounded memory growth
997 A malicious client can send an excessively large OCSP Status Request
998 extension. If that client continually requests renegotiation, sending a
999 large OCSP Status Request extension each time, then there will be unbounded
1000 memory growth on the server. This will eventually lead to a Denial Of
1001 Service attack through memory exhaustion. Servers with a default
1002 configuration are vulnerable even if they do not support OCSP. Builds using
1003 the "no-ocsp" build time option are not affected.
1005 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1009 *) SSL_peek() hang on empty record
1011 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
1012 sends an empty record. This could be exploited by a malicious peer in a
1013 Denial Of Service attack.
1015 This issue was reported to OpenSSL by Alex Gaynor.
1019 *) Excessive allocation of memory in tls_get_message_header() and
1020 dtls1_preprocess_fragment()
1022 A (D)TLS message includes 3 bytes for its length in the header for the
1023 message. This would allow for messages up to 16Mb in length. Messages of
1024 this length are excessive and OpenSSL includes a check to ensure that a
1025 peer is sending reasonably sized messages in order to avoid too much memory
1026 being consumed to service a connection. A flaw in the logic of version
1027 1.1.0 means that memory for the message is allocated too early, prior to
1028 the excessive message length check. Due to way memory is allocated in
1029 OpenSSL this could mean an attacker could force up to 21Mb to be allocated
1030 to service a connection. This could lead to a Denial of Service through
1031 memory exhaustion. However, the excessive message length check still takes
1032 place, and this would cause the connection to immediately fail. Assuming
1033 that the application calls SSL_free() on the failed connection in a timely
1034 manner then the 21Mb of allocated memory will then be immediately freed
1035 again. Therefore the excessive memory allocation will be transitory in
1036 nature. This then means that there is only a security impact if:
1038 1) The application does not call SSL_free() in a timely manner in the event
1039 that the connection fails
1041 2) The application is working in a constrained environment where there is
1042 very little free memory
1044 3) The attacker initiates multiple connection attempts such that there are
1045 multiple connections in a state where memory has been allocated for the
1046 connection; SSL_free() has not yet been called; and there is insufficient
1047 memory to service the multiple requests.
1049 Except in the instance of (1) above any Denial Of Service is likely to be
1050 transitory because as soon as the connection fails the memory is
1051 subsequently freed again in the SSL_free() call. However there is an
1052 increased risk during this period of application crashes due to the lack of
1053 memory - which would then mean a more serious Denial of Service.
1055 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1056 (CVE-2016-6307 and CVE-2016-6308)
1059 *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
1060 had to be removed. Primary reason is that vendor assembler can't
1061 assemble our modules with -KPIC flag. As result it, assembly
1062 support, was not even available as option. But its lack means
1063 lack of side-channel resistant code, which is incompatible with
1064 security by todays standards. Fortunately gcc is readily available
1065 prepackaged option, which we firmly point at...
1068 Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
1070 *) Windows command-line tool supports UTF-8 opt-in option for arguments
1071 and console input. Setting OPENSSL_WIN32_UTF8 environment variable
1072 (to any value) allows Windows user to access PKCS#12 file generated
1073 with Windows CryptoAPI and protected with non-ASCII password, as well
1074 as files generated under UTF-8 locale on Linux also protected with
1078 *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites
1079 have been disabled by default and removed from DEFAULT, just like RC4.
1080 See the RC4 item below to re-enable both.
1083 *) The method for finding the storage location for the Windows RAND seed file
1084 has changed. First we check %RANDFILE%. If that is not set then we check
1085 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
1086 all else fails we fall back to C:\.
1089 *) The EVP_EncryptUpdate() function has had its return type changed from void
1090 to int. A return of 0 indicates and error while a return of 1 indicates
1094 *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
1095 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
1096 off the constant time implementation for RSA, DSA and DH have been made
1097 no-ops and deprecated.
1100 *) Windows RAND implementation was simplified to only get entropy by
1101 calling CryptGenRandom(). Various other RAND-related tickets
1103 [Joseph Wylie Yandle, Rich Salz]
1105 *) The stack and lhash API's were renamed to start with OPENSSL_SK_
1106 and OPENSSL_LH_, respectively. The old names are available
1107 with API compatibility. They new names are now completely documented.
1110 *) Unify TYPE_up_ref(obj) methods signature.
1111 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
1112 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
1113 int (instead of void) like all others TYPE_up_ref() methods.
1114 So now these methods also check the return value of CRYPTO_atomic_add(),
1115 and the validity of object reference counter.
1116 [fdasilvayy@gmail.com]
1118 *) With Windows Visual Studio builds, the .pdb files are installed
1119 alongside the installed libraries and executables. For a static
1120 library installation, ossl_static.pdb is the associate compiler
1121 generated .pdb file to be used when linking programs.
1124 *) Remove openssl.spec. Packaging files belong with the packagers.
1127 *) Automatic Darwin/OSX configuration has had a refresh, it will now
1128 recognise x86_64 architectures automatically. You can still decide
1129 to build for a different bitness with the environment variable
1130 KERNEL_BITS (can be 32 or 64), for example:
1132 KERNEL_BITS=32 ./config
1136 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
1137 256 bit AES and HMAC with SHA256.
1140 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only).
1143 *) Triple-DES ciphers have been moved from HIGH to MEDIUM.
1146 *) To enable users to have their own config files and build file templates,
1147 Configure looks in the directory indicated by the environment variable
1148 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
1149 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
1150 name and is used as is.
1153 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
1154 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
1155 X509_CERT_FILE_CTX was removed.
1158 *) "shared" builds are now the default. To create only static libraries use
1159 the "no-shared" Configure option.
1162 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
1163 All of these option have not worked for some while and are fundamental
1167 *) Make various cleanup routines no-ops and mark them as deprecated. Most
1168 global cleanup functions are no longer required because they are handled
1169 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
1170 Explicitly de-initing can cause problems (e.g. where a library that uses
1171 OpenSSL de-inits, but an application is still using it). The affected
1172 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
1173 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
1174 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
1175 COMP_zlib_cleanup().
1178 *) --strict-warnings no longer enables runtime debugging options
1179 such as REF_DEBUG. Instead, debug options are automatically
1180 enabled with '--debug' builds.
1181 [Andy Polyakov, Emilia Käsper]
1183 *) Made DH and DH_METHOD opaque. The structures for managing DH objects
1184 have been moved out of the public header files. New functions for managing
1185 these have been added.
1188 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA
1189 objects have been moved out of the public header files. New
1190 functions for managing these have been added.
1193 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
1194 have been moved out of the public header files. New functions for managing
1195 these have been added.
1198 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
1199 moved out of the public header files. New functions for managing these
1203 *) Removed no-rijndael as a config option. Rijndael is an old name for AES.
1206 *) Removed the mk1mf build scripts.
1209 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
1210 it is always safe to #include a header now.
1213 *) Removed the aged BC-32 config and all its supporting scripts
1216 *) Removed support for Ultrix, Netware, and OS/2.
1219 *) Add support for HKDF.
1220 [Alessandro Ghedini]
1222 *) Add support for blake2b and blake2s
1225 *) Added support for "pipelining". Ciphers that have the
1226 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
1227 encryptions/decryptions simultaneously. There are currently no built-in
1228 ciphers with this property but the expectation is that engines will be able
1229 to offer it to significantly improve throughput. Support has been extended
1230 into libssl so that multiple records for a single connection can be
1231 processed in one go (for >=TLS 1.1).
1234 *) Added the AFALG engine. This is an async capable engine which is able to
1235 offload work to the Linux kernel. In this initial version it only supports
1236 AES128-CBC. The kernel must be version 4.1.0 or greater.
1239 *) OpenSSL now uses a new threading API. It is no longer necessary to
1240 set locking callbacks to use OpenSSL in a multi-threaded environment. There
1241 are two supported threading models: pthreads and windows threads. It is
1242 also possible to configure OpenSSL at compile time for "no-threads". The
1243 old threading API should no longer be used. The functions have been
1244 replaced with "no-op" compatibility macros.
1245 [Alessandro Ghedini, Matt Caswell]
1247 *) Modify behavior of ALPN to invoke callback after SNI/servername
1248 callback, such that updates to the SSL_CTX affect ALPN.
1251 *) Add SSL_CIPHER queries for authentication and key-exchange.
1254 *) Changes to the DEFAULT cipherlist:
1255 - Prefer (EC)DHE handshakes over plain RSA.
1256 - Prefer AEAD ciphers over legacy ciphers.
1257 - Prefer ECDSA over RSA when both certificates are available.
1258 - Prefer TLSv1.2 ciphers/PRF.
1259 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
1263 *) Change the ECC default curve list to be this, in order: x25519,
1264 secp256r1, secp521r1, secp384r1.
1267 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
1268 disabled by default. They can be re-enabled using the
1269 enable-weak-ssl-ciphers option to Configure.
1272 *) If the server has ALPN configured, but supports no protocols that the
1273 client advertises, send a fatal "no_application_protocol" alert.
1274 This behaviour is SHALL in RFC 7301, though it isn't universally
1275 implemented by other servers.
1278 *) Add X25519 support.
1279 Add ASN.1 and EVP_PKEY methods for X25519. This includes support
1280 for public and private key encoding using the format documented in
1281 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
1282 key generation and key derivation.
1284 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
1288 *) Deprecate SRP_VBASE_get_by_user.
1289 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
1290 In order to fix an unavoidable memory leak (CVE-2016-0798),
1291 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
1292 seed, even if the seed is configured.
1294 Users should use SRP_VBASE_get1_by_user instead. Note that in
1295 SRP_VBASE_get1_by_user, caller must free the returned value. Note
1296 also that even though configuring the SRP seed attempts to hide
1297 invalid usernames by continuing the handshake with fake
1298 credentials, this behaviour is not constant time and no strong
1299 guarantees are made that the handshake is indistinguishable from
1300 that of a valid user.
1303 *) Configuration change; it's now possible to build dynamic engines
1304 without having to build shared libraries and vice versa. This
1305 only applies to the engines in engines/, those in crypto/engine/
1306 will always be built into libcrypto (i.e. "static").
1308 Building dynamic engines is enabled by default; to disable, use
1309 the configuration option "disable-dynamic-engine".
1311 The only requirements for building dynamic engines are the
1312 presence of the DSO module and building with position independent
1313 code, so they will also automatically be disabled if configuring
1314 with "disable-dso" or "disable-pic".
1316 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
1317 are also taken away from openssl/opensslconf.h, as they are
1321 *) Configuration change; if there is a known flag to compile
1322 position independent code, it will always be applied on the
1323 libcrypto and libssl object files, and never on the application
1324 object files. This means other libraries that use routines from
1325 libcrypto / libssl can be made into shared libraries regardless
1326 of how OpenSSL was configured.
1328 If this isn't desirable, the configuration options "disable-pic"
1329 or "no-pic" can be used to disable the use of PIC. This will
1330 also disable building shared libraries and dynamic engines.
1333 *) Removed JPAKE code. It was experimental and has no wide use.
1336 *) The INSTALL_PREFIX Makefile variable has been renamed to
1337 DESTDIR. That makes for less confusion on what this variable
1338 is for. Also, the configuration option --install_prefix is
1342 *) Heartbeat for TLS has been removed and is disabled by default
1343 for DTLS; configure with enable-heartbeats. Code that uses the
1344 old #define's might need to be updated.
1345 [Emilia Käsper, Rich Salz]
1347 *) Rename REF_CHECK to REF_DEBUG.
1350 *) New "unified" build system
1352 The "unified" build system is aimed to be a common system for all
1353 platforms we support. With it comes new support for VMS.
1355 This system builds supports building in a different directory tree
1356 than the source tree. It produces one Makefile (for unix family
1357 or lookalikes), or one descrip.mms (for VMS).
1359 The source of information to make the Makefile / descrip.mms is
1360 small files called 'build.info', holding the necessary
1361 information for each directory with source to compile, and a
1362 template in Configurations, like unix-Makefile.tmpl or
1365 With this change, the library names were also renamed on Windows
1366 and on VMS. They now have names that are closer to the standard
1367 on Unix, and include the major version number, and in certain
1368 cases, the architecture they are built for. See "Notes on shared
1369 libraries" in INSTALL.
1371 We rely heavily on the perl module Text::Template.
1374 *) Added support for auto-initialisation and de-initialisation of the library.
1375 OpenSSL no longer requires explicit init or deinit routines to be called,
1376 except in certain circumstances. See the OPENSSL_init_crypto() and
1377 OPENSSL_init_ssl() man pages for further information.
1380 *) The arguments to the DTLSv1_listen function have changed. Specifically the
1381 "peer" argument is now expected to be a BIO_ADDR object.
1383 *) Rewrite of BIO networking library. The BIO library lacked consistent
1384 support of IPv6, and adding it required some more extensive
1385 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
1386 which hold all types of addresses and chains of address information.
1387 It also introduces a new API, with functions like BIO_socket,
1388 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
1389 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
1390 have been adapted accordingly.
1393 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
1397 *) CRIME protection: disable compression by default, even if OpenSSL is
1398 compiled with zlib enabled. Applications can still enable compression
1399 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
1400 using the SSL_CONF library to configure compression.
1403 *) The signature of the session callback configured with
1404 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
1405 was explicitly marked as 'const unsigned char*' instead of
1409 *) Always DPURIFY. Remove the use of uninitialized memory in the
1410 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
1413 *) Removed many obsolete configuration items, including
1414 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
1415 MD2_CHAR, MD2_INT, MD2_LONG
1417 IDEA_SHORT, IDEA_LONG
1418 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
1419 [Rich Salz, with advice from Andy Polyakov]
1421 *) Many BN internals have been moved to an internal header file.
1422 [Rich Salz with help from Andy Polyakov]
1424 *) Configuration and writing out the results from it has changed.
1425 Files such as Makefile include/openssl/opensslconf.h and are now
1426 produced through general templates, such as Makefile.in and
1427 crypto/opensslconf.h.in and some help from the perl module
1430 Also, the center of configuration information is no longer
1431 Makefile. Instead, Configure produces a perl module in
1432 configdata.pm which holds most of the config data (in the hash
1433 table %config), the target data that comes from the target
1434 configuration in one of the Configurations/*.conf files (in
1438 *) To clarify their intended purposes, the Configure options
1439 --prefix and --openssldir change their semantics, and become more
1440 straightforward and less interdependent.
1442 --prefix shall be used exclusively to give the location INSTALLTOP
1443 where programs, scripts, libraries, include files and manuals are
1444 going to be installed. The default is now /usr/local.
1446 --openssldir shall be used exclusively to give the default
1447 location OPENSSLDIR where certificates, private keys, CRLs are
1448 managed. This is also where the default openssl.cnf gets
1450 If the directory given with this option is a relative path, the
1451 values of both the --prefix value and the --openssldir value will
1452 be combined to become OPENSSLDIR.
1453 The default for --openssldir is INSTALLTOP/ssl.
1455 Anyone who uses --openssldir to specify where OpenSSL is to be
1456 installed MUST change to use --prefix instead.
1459 *) The GOST engine was out of date and therefore it has been removed. An up
1460 to date GOST engine is now being maintained in an external repository.
1461 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
1462 support for GOST ciphersuites (these are only activated if a GOST engine
1466 *) EGD is no longer supported by default; use enable-egd when
1468 [Ben Kaduk and Rich Salz]
1470 *) The distribution now has Makefile.in files, which are used to
1471 create Makefile's when Configure is run. *Configure must be run
1472 before trying to build now.*
1475 *) The return value for SSL_CIPHER_description() for error conditions
1479 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication.
1481 Obtaining and performing DNSSEC validation of TLSA records is
1482 the application's responsibility. The application provides
1483 the TLSA records of its choice to OpenSSL, and these are then
1484 used to authenticate the peer.
1486 The TLSA records need not even come from DNS. They can, for
1487 example, be used to implement local end-entity certificate or
1488 trust-anchor "pinning", where the "pin" data takes the form
1489 of TLSA records, which can augment or replace verification
1490 based on the usual WebPKI public certification authorities.
1493 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
1494 continues to support deprecated interfaces in default builds.
1495 However, applications are strongly advised to compile their
1496 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
1497 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
1498 or the 1.1.0 releases.
1500 In environments in which all applications have been ported to
1501 not use any deprecated interfaces OpenSSL's Configure script
1502 should be used with the --api=1.1.0 option to entirely remove
1503 support for the deprecated features from the library and
1504 unconditionally disable them in the installed headers.
1505 Essentially the same effect can be achieved with the "no-deprecated"
1506 argument to Configure, except that this will always restrict
1507 the build to just the latest API, rather than a fixed API
1510 As applications are ported to future revisions of the API,
1511 they should update their compile-time OPENSSL_API_COMPAT define
1512 accordingly, but in most cases should be able to continue to
1513 compile with later releases.
1515 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
1516 0x10000000L and 0x00908000L, respectively. However those
1517 versions did not support the OPENSSL_API_COMPAT feature, and
1518 so applications are not typically tested for explicit support
1519 of just the undeprecated features of either release.
1522 *) Add support for setting the minimum and maximum supported protocol.
1523 It can bet set via the SSL_set_min_proto_version() and
1524 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
1525 MaxProtocol. It's recommended to use the new APIs to disable
1526 protocols instead of disabling individual protocols using
1527 SSL_set_options() or SSL_CONF's Protocol. This change also
1528 removes support for disabling TLS 1.2 in the OpenSSL TLS
1529 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
1532 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
1535 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
1536 and integrates ECDSA and ECDH functionality into EC. Implementations can
1537 now redirect key generation and no longer need to convert to or from
1540 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
1541 include the ec.h header file instead.
1544 *) Remove support for all 40 and 56 bit ciphers. This includes all the export
1545 ciphers who are no longer supported and drops support the ephemeral RSA key
1546 exchange. The LOW ciphers currently doesn't have any ciphers in it.
1549 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
1550 opaque. For HMAC_CTX, the following constructors and destructors
1553 HMAC_CTX *HMAC_CTX_new(void);
1554 void HMAC_CTX_free(HMAC_CTX *ctx);
1556 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
1557 destroy such methods has been added. See EVP_MD_meth_new(3) and
1558 EVP_CIPHER_meth_new(3) for documentation.
1561 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
1562 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
1563 EVP_MD_CTX_reset() should be called instead to reinitialise
1564 an already created structure.
1565 2) For consistency with the majority of our object creators and
1566 destructors, EVP_MD_CTX_(create|destroy) were renamed to
1567 EVP_MD_CTX_(new|free). The old names are retained as macros
1568 for deprecated builds.
1571 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
1572 cryptographic operations to be performed asynchronously as long as an
1573 asynchronous capable engine is used. See the ASYNC_start_job() man page for
1574 further details. Libssl has also had this capability integrated with the
1575 introduction of the new mode SSL_MODE_ASYNC and associated error
1576 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
1577 pages. This work was developed in partnership with Intel Corp.
1580 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
1581 always enabled now. If you want to disable the support you should
1582 exclude it using the list of supported ciphers. This also means that the
1583 "-no_ecdhe" option has been removed from s_server.
1586 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
1587 SSL_{CTX_}set1_curves() which can set a list.
1590 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
1591 curve you want to support using SSL_{CTX_}set1_curves().
1594 *) State machine rewrite. The state machine code has been significantly
1595 refactored in order to remove much duplication of code and solve issues
1596 with the old code (see ssl/statem/README for further details). This change
1597 does have some associated API changes. Notably the SSL_state() function
1598 has been removed and replaced by SSL_get_state which now returns an
1599 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
1600 altogether. The previous handshake states defined in ssl.h and ssl3.h have
1604 *) All instances of the string "ssleay" in the public API were replaced
1605 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
1606 Some error codes related to internal RSA_eay API's were renamed.
1609 *) The demo files in crypto/threads were moved to demo/threads.
1612 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
1614 [Matt Caswell, Rich Salz]
1616 *) New ASN.1 embed macro.
1618 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
1619 structure is not allocated: it is part of the parent. That is instead of
1627 This reduces memory fragmentation and make it impossible to accidentally
1628 set a mandatory field to NULL.
1630 This currently only works for some fields specifically a SEQUENCE, CHOICE,
1631 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
1632 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
1636 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
1639 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
1640 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
1641 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
1642 DES and RC4 ciphersuites.
1645 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
1646 This changes the decoding behaviour for some invalid messages,
1647 though the change is mostly in the more lenient direction, and
1648 legacy behaviour is preserved as much as possible.
1651 *) Fix no-stdio build.
1652 [ David Woodhouse <David.Woodhouse@intel.com> and also
1653 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
1655 *) New testing framework
1656 The testing framework has been largely rewritten and is now using
1657 perl and the perl modules Test::Harness and an extended variant of
1658 Test::More called OpenSSL::Test to do its work. All test scripts in
1659 test/ have been rewritten into test recipes, and all direct calls to
1660 executables in test/Makefile have become individual recipes using the
1661 simplified testing OpenSSL::Test::Simple.
1663 For documentation on our testing modules, do:
1665 perldoc test/testlib/OpenSSL/Test/Simple.pm
1666 perldoc test/testlib/OpenSSL/Test.pm
1670 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
1671 are used; the latter aborts on memory leaks (usually checked on exit).
1672 Some undocumented "set malloc, etc., hooks" functions were removed
1673 and others were changed. All are now documented.
1676 *) In DSA_generate_parameters_ex, if the provided seed is too short,
1678 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
1680 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
1681 from RFC4279, RFC4785, RFC5487, RFC5489.
1683 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
1684 original RSA_PSK patch.
1687 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
1688 era flag was never set throughout the codebase (only read). Also removed
1689 SSL3_FLAGS_POP_BUFFER which was only used if
1690 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
1693 *) Changed the default name options in the "ca", "crl", "req" and "x509"
1694 to be "oneline" instead of "compat".
1697 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
1698 not aware of clients that still exhibit this bug, and the workaround
1699 hasn't been working properly for a while.
1702 *) The return type of BIO_number_read() and BIO_number_written() as well as
1703 the corresponding num_read and num_write members in the BIO structure has
1704 changed from unsigned long to uint64_t. On platforms where an unsigned
1705 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
1709 *) Given the pervasive nature of TLS extensions it is inadvisable to run
1710 OpenSSL without support for them. It also means that maintaining
1711 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
1712 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
1715 *) Removed support for the two export grade static DH ciphersuites
1716 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
1717 were newly added (along with a number of other static DH ciphersuites) to
1718 1.0.2. However the two export ones have *never* worked since they were
1719 introduced. It seems strange in any case to be adding new export
1720 ciphersuites, and given "logjam" it also does not seem correct to fix them.
1723 *) Version negotiation has been rewritten. In particular SSLv23_method(),
1724 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
1725 and turned into macros which simply call the new preferred function names
1726 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
1727 should use the new names instead. Also as part of this change the ssl23.h
1728 header file has been removed.
1731 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
1732 code and the associated standard is no longer considered fit-for-purpose.
1735 *) RT2547 was closed. When generating a private key, try to make the
1736 output file readable only by the owner. This behavior change might
1737 be noticeable when interacting with other software.
1739 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
1743 *) Added HTTP GET support to the ocsp command.
1746 *) Changed default digest for the dgst and enc commands from MD5 to
1750 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
1753 *) Added support for TLS extended master secret from
1754 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
1755 initial patch which was a great help during development.
1758 *) All libssl internal structures have been removed from the public header
1759 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
1760 now redundant). Users should not attempt to access internal structures
1761 directly. Instead they should use the provided API functions.
1764 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
1765 Access to deprecated functions can be re-enabled by running config with
1766 "enable-deprecated". In addition applications wishing to use deprecated
1767 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
1768 will, by default, disable some transitive includes that previously existed
1769 in the header files (e.g. ec.h will no longer, by default, include bn.h)
1772 *) Added support for OCB mode. OpenSSL has been granted a patent license
1773 compatible with the OpenSSL license for use of OCB. Details are available
1774 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
1775 for OCB can be removed by calling config with no-ocb.
1778 *) SSLv2 support has been removed. It still supports receiving a SSLv2
1779 compatible client hello.
1782 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
1783 done while fixing the error code for the key-too-small case.
1784 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
1786 *) CA.sh has been removed; use CA.pl instead.
1789 *) Removed old DES API.
1792 *) Remove various unsupported platforms:
1798 Sinix/ReliantUNIX RM400
1803 16-bit platforms such as WIN16
1806 *) Clean up OPENSSL_NO_xxx #define's
1807 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
1808 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
1809 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
1810 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
1811 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
1812 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
1813 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
1814 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
1815 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
1816 Remove MS_STATIC; it's a relic from platforms <32 bits.
1819 *) Cleaned up dead code
1820 Remove all but one '#ifdef undef' which is to be looked at.
1823 *) Clean up calling of xxx_free routines.
1824 Just like free(), fix most of the xxx_free routines to accept
1825 NULL. Remove the non-null checks from callers. Save much code.
1828 *) Add secure heap for storage of private keys (when possible).
1829 Add BIO_s_secmem(), CBIGNUM, etc.
1830 Contributed by Akamai Technologies under our Corporate CLA.
1833 *) Experimental support for a new, fast, unbiased prime candidate generator,
1834 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
1835 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
1837 *) New output format NSS in the sess_id command line tool. This allows
1838 exporting the session id and the master key in NSS keylog format.
1839 [Martin Kaiser <martin@kaiser.cx>]
1841 *) Harmonize version and its documentation. -f flag is used to display
1843 [mancha <mancha1@zoho.com>]
1845 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
1846 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
1847 [mancha <mancha1@zoho.com>]
1849 *) Fix some double frees. These are not thought to be exploitable.
1850 [mancha <mancha1@zoho.com>]
1852 *) A missing bounds check in the handling of the TLS heartbeat extension
1853 can be used to reveal up to 64k of memory to a connected client or
1856 Thanks for Neel Mehta of Google Security for discovering this bug and to
1857 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
1858 preparing the fix (CVE-2014-0160)
1859 [Adam Langley, Bodo Moeller]
1861 *) Fix for the attack described in the paper "Recovering OpenSSL
1862 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
1863 by Yuval Yarom and Naomi Benger. Details can be obtained from:
1864 http://eprint.iacr.org/2014/140
1866 Thanks to Yuval Yarom and Naomi Benger for discovering this
1867 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
1868 [Yuval Yarom and Naomi Benger]
1870 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
1871 this fixes a limitation in previous versions of OpenSSL.
1874 *) Experimental encrypt-then-mac support.
1876 Experimental support for encrypt then mac from
1877 draft-gutmann-tls-encrypt-then-mac-02.txt
1879 To enable it set the appropriate extension number (0x42 for the test
1880 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
1882 For non-compliant peers (i.e. just about everything) this should have no
1885 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
1889 *) Add EVP support for key wrapping algorithms, to avoid problems with
1890 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
1891 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
1892 algorithms and include tests cases.
1895 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
1899 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
1900 MGF1 digest and OAEP label.
1903 *) Make openssl verify return errors.
1904 [Chris Palmer <palmer@google.com> and Ben Laurie]
1906 *) New function ASN1_TIME_diff to calculate the difference between two
1907 ASN1_TIME structures or one structure and the current time.
1910 *) Update fips_test_suite to support multiple command line options. New
1911 test to induce all self test errors in sequence and check expected
1915 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
1916 sign or verify all in one operation.
1919 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
1920 test programs and fips_test_suite. Includes functionality to parse
1921 the minimal script output of fipsalgest.pl directly.
1924 *) Add authorisation parameter to FIPS_module_mode_set().
1927 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
1930 *) Use separate DRBG fields for internal and external flags. New function
1931 FIPS_drbg_health_check() to perform on demand health checking. Add
1932 generation tests to fips_test_suite with reduced health check interval to
1933 demonstrate periodic health checking. Add "nodh" option to
1934 fips_test_suite to skip very slow DH test.
1937 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
1941 *) More extensive health check for DRBG checking many more failure modes.
1942 New function FIPS_selftest_drbg_all() to handle every possible DRBG
1943 combination: call this in fips_test_suite.
1946 *) Add support for canonical generation of DSA parameter 'g'. See
1949 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
1950 POST to handle HMAC cases.
1953 *) Add functions FIPS_module_version() and FIPS_module_version_text()
1954 to return numerical and string versions of the FIPS module number.
1957 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
1958 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
1959 outside the validated module in the FIPS capable OpenSSL.
1962 *) Minor change to DRBG entropy callback semantics. In some cases
1963 there is no multiple of the block length between min_len and
1964 max_len. Allow the callback to return more than max_len bytes
1965 of entropy but discard any extra: it is the callback's responsibility
1966 to ensure that the extra data discarded does not impact the
1967 requested amount of entropy.
1970 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
1971 information in FIPS186-3, SP800-57 and SP800-131A.
1974 *) CCM support via EVP. Interface is very similar to GCM case except we
1975 must supply all data in one chunk (i.e. no update, final) and the
1976 message length must be supplied if AAD is used. Add algorithm test
1980 *) Initial version of POST overhaul. Add POST callback to allow the status
1981 of POST to be monitored and/or failures induced. Modify fips_test_suite
1982 to use callback. Always run all selftests even if one fails.
1985 *) XTS support including algorithm test driver in the fips_gcmtest program.
1986 Note: this does increase the maximum key length from 32 to 64 bytes but
1987 there should be no binary compatibility issues as existing applications
1988 will never use XTS mode.
1991 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
1992 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
1993 performs algorithm blocking for unapproved PRNG types. Also do not
1994 set PRNG type in FIPS_mode_set(): leave this to the application.
1995 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
1996 the standard OpenSSL PRNG: set additional data to a date time vector.
1999 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
2000 This shouldn't present any incompatibility problems because applications
2001 shouldn't be using these directly and any that are will need to rethink
2002 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
2005 *) Extensive self tests and health checking required by SP800-90 DRBG.
2006 Remove strength parameter from FIPS_drbg_instantiate and always
2007 instantiate at maximum supported strength.
2010 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
2013 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
2016 *) New function DH_compute_key_padded() to compute a DH key and pad with
2017 leading zeroes if needed: this complies with SP800-56A et al.
2020 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
2021 anything, incomplete, subject to change and largely untested at present.
2024 *) Modify fipscanisteronly build option to only build the necessary object
2025 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
2028 *) Add experimental option FIPSSYMS to give all symbols in
2029 fipscanister.o and FIPS or fips prefix. This will avoid
2030 conflicts with future versions of OpenSSL. Add perl script
2031 util/fipsas.pl to preprocess assembly language source files
2032 and rename any affected symbols.
2035 *) Add selftest checks and algorithm block of non-fips algorithms in
2036 FIPS mode. Remove DES2 from selftests.
2039 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
2040 return internal method without any ENGINE dependencies. Add new
2041 tiny fips sign and verify functions.
2044 *) New build option no-ec2m to disable characteristic 2 code.
2047 *) New build option "fipscanisteronly". This only builds fipscanister.o
2048 and (currently) associated fips utilities. Uses the file Makefile.fips
2049 instead of Makefile.org as the prototype.
2052 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
2053 Update fips_gcmtest to use IV generator.
2056 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
2057 setting output buffer to NULL. The *Final function must be
2058 called although it will not retrieve any additional data. The tag
2059 can be set or retrieved with a ctrl. The IV length is by default 12
2060 bytes (96 bits) but can be set to an alternative value. If the IV
2061 length exceeds the maximum IV length (currently 16 bytes) it cannot be
2065 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
2066 underlying do_cipher function handles all cipher semantics itself
2067 including padding and finalisation. This is useful if (for example)
2068 an ENGINE cipher handles block padding itself. The behaviour of
2069 do_cipher is subtly changed if this flag is set: the return value
2070 is the number of characters written to the output buffer (zero is
2071 no longer an error code) or a negative error code. Also if the
2072 input buffer is NULL and length 0 finalisation should be performed.
2075 *) If a candidate issuer certificate is already part of the constructed
2076 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
2079 *) Improve forward-security support: add functions
2081 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
2082 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
2084 for use by SSL/TLS servers; the callback function will be called whenever a
2085 new session is created, and gets to decide whether the session may be
2086 cached to make it resumable (return 0) or not (return 1). (As by the
2087 SSL/TLS protocol specifications, the session_id sent by the server will be
2088 empty to indicate that the session is not resumable; also, the server will
2089 not generate RFC 4507 (RFC 5077) session tickets.)
2091 A simple reasonable callback implementation is to return is_forward_secure.
2092 This parameter will be set to 1 or 0 depending on the ciphersuite selected
2093 by the SSL/TLS server library, indicating whether it can provide forward
2095 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2097 *) New -verify_name option in command line utilities to set verification
2101 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
2102 Add CMAC pkey methods.
2105 *) Experimental renegotiation in s_server -www mode. If the client
2106 browses /reneg connection is renegotiated. If /renegcert it is
2107 renegotiated requesting a certificate.
2110 *) Add an "external" session cache for debugging purposes to s_server. This
2111 should help trace issues which normally are only apparent in deployed
2112 multi-process servers.
2115 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
2116 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
2117 BIO_set_cipher() and some obscure PEM functions were changed so they
2118 can now return an error. The RAND changes required a change to the
2119 RAND_METHOD structure.
2122 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
2123 a gcc attribute to warn if the result of a function is ignored. This
2124 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
2125 whose return value is often ignored.
2128 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client.
2129 These allow SCTs (signed certificate timestamps) to be requested and
2130 validated when establishing a connection.
2131 [Rob Percival <robpercival@google.com>]
2133 Changes between 1.0.2g and 1.0.2h [3 May 2016]
2135 *) Prevent padding oracle in AES-NI CBC MAC check
2137 A MITM attacker can use a padding oracle attack to decrypt traffic
2138 when the connection uses an AES CBC cipher and the server support
2141 This issue was introduced as part of the fix for Lucky 13 padding
2142 attack (CVE-2013-0169). The padding check was rewritten to be in
2143 constant time by making sure that always the same bytes are read and
2144 compared against either the MAC or padding bytes. But it no longer
2145 checked that there was enough data to have both the MAC and padding
2148 This issue was reported by Juraj Somorovsky using TLS-Attacker.
2152 *) Fix EVP_EncodeUpdate overflow
2154 An overflow can occur in the EVP_EncodeUpdate() function which is used for
2155 Base64 encoding of binary data. If an attacker is able to supply very large
2156 amounts of input data then a length check can overflow resulting in a heap
2159 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
2160 the PEM_write_bio* family of functions. These are mainly used within the
2161 OpenSSL command line applications, so any application which processes data
2162 from an untrusted source and outputs it as a PEM file should be considered
2163 vulnerable to this issue. User applications that call these APIs directly
2164 with large amounts of untrusted data may also be vulnerable.
2166 This issue was reported by Guido Vranken.
2170 *) Fix EVP_EncryptUpdate overflow
2172 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
2173 is able to supply very large amounts of input data after a previous call to
2174 EVP_EncryptUpdate() with a partial block then a length check can overflow
2175 resulting in a heap corruption. Following an analysis of all OpenSSL
2176 internal usage of the EVP_EncryptUpdate() function all usage is one of two
2177 forms. The first form is where the EVP_EncryptUpdate() call is known to be
2178 the first called function after an EVP_EncryptInit(), and therefore that
2179 specific call must be safe. The second form is where the length passed to
2180 EVP_EncryptUpdate() can be seen from the code to be some small value and
2181 therefore there is no possibility of an overflow. Since all instances are
2182 one of these two forms, it is believed that there can be no overflows in
2183 internal code due to this problem. It should be noted that
2184 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
2185 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
2186 of these calls have also been analysed too and it is believed there are no
2187 instances in internal usage where an overflow could occur.
2189 This issue was reported by Guido Vranken.
2193 *) Prevent ASN.1 BIO excessive memory allocation
2195 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
2196 a short invalid encoding can cause allocation of large amounts of memory
2197 potentially consuming excessive resources or exhausting memory.
2199 Any application parsing untrusted data through d2i BIO functions is
2200 affected. The memory based functions such as d2i_X509() are *not* affected.
2201 Since the memory based functions are used by the TLS library, TLS
2202 applications are not affected.
2204 This issue was reported by Brian Carpenter.
2210 ASN1 Strings that are over 1024 bytes can cause an overread in applications
2211 using the X509_NAME_oneline() function on EBCDIC systems. This could result
2212 in arbitrary stack data being returned in the buffer.
2214 This issue was reported by Guido Vranken.
2218 *) Modify behavior of ALPN to invoke callback after SNI/servername
2219 callback, such that updates to the SSL_CTX affect ALPN.
2222 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
2226 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
2227 methods are enabled and ssl2 is disabled the methods return NULL.
2230 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
2232 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
2233 Builds that are not configured with "enable-weak-ssl-ciphers" will not
2234 provide any "EXPORT" or "LOW" strength ciphers.
2237 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
2238 is by default disabled at build-time. Builds that are not configured with
2239 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
2240 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
2241 will need to explicitly call either of:
2243 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
2245 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
2247 as appropriate. Even if either of those is used, or the application
2248 explicitly uses the version-specific SSLv2_method() or its client and
2249 server variants, SSLv2 ciphers vulnerable to exhaustive search key
2250 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
2251 ciphers, and SSLv2 56-bit DES are no longer available.
2255 *) Fix a double-free in DSA code
2257 A double free bug was discovered when OpenSSL parses malformed DSA private
2258 keys and could lead to a DoS attack or memory corruption for applications
2259 that receive DSA private keys from untrusted sources. This scenario is
2262 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
2267 *) Disable SRP fake user seed to address a server memory leak.
2269 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
2271 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
2272 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
2273 was changed to ignore the "fake user" SRP seed, even if the seed
2276 Users should use SRP_VBASE_get1_by_user instead. Note that in
2277 SRP_VBASE_get1_by_user, caller must free the returned value. Note
2278 also that even though configuring the SRP seed attempts to hide
2279 invalid usernames by continuing the handshake with fake
2280 credentials, this behaviour is not constant time and no strong
2281 guarantees are made that the handshake is indistinguishable from
2282 that of a valid user.
2286 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
2288 In the BN_hex2bn function the number of hex digits is calculated using an
2289 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
2290 large values of |i| this can result in |bn_expand| not allocating any
2291 memory because |i * 4| is negative. This can leave the internal BIGNUM data
2292 field as NULL leading to a subsequent NULL ptr deref. For very large values
2293 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
2294 In this case memory is allocated to the internal BIGNUM data field, but it
2295 is insufficiently sized leading to heap corruption. A similar issue exists
2296 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
2297 is ever called by user applications with very large untrusted hex/dec data.
2298 This is anticipated to be a rare occurrence.
2300 All OpenSSL internal usage of these functions use data that is not expected
2301 to be untrusted, e.g. config file data or application command line
2302 arguments. If user developed applications generate config file data based
2303 on untrusted data then it is possible that this could also lead to security
2304 consequences. This is also anticipated to be rare.
2306 This issue was reported to OpenSSL by Guido Vranken.
2310 *) Fix memory issues in BIO_*printf functions
2312 The internal |fmtstr| function used in processing a "%s" format string in
2313 the BIO_*printf functions could overflow while calculating the length of a
2314 string and cause an OOB read when printing very long strings.
2316 Additionally the internal |doapr_outch| function can attempt to write to an
2317 OOB memory location (at an offset from the NULL pointer) in the event of a
2318 memory allocation failure. In 1.0.2 and below this could be caused where
2319 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
2320 could be in processing a very long "%s" format string. Memory leaks can
2323 The first issue may mask the second issue dependent on compiler behaviour.
2324 These problems could enable attacks where large amounts of untrusted data
2325 is passed to the BIO_*printf functions. If applications use these functions
2326 in this way then they could be vulnerable. OpenSSL itself uses these
2327 functions when printing out human-readable dumps of ASN.1 data. Therefore
2328 applications that print this data could be vulnerable if the data is from
2329 untrusted sources. OpenSSL command line applications could also be
2330 vulnerable where they print out ASN.1 data, or if untrusted data is passed
2331 as command line arguments.
2333 Libssl is not considered directly vulnerable. Additionally certificates etc
2334 received via remote connections via libssl are also unlikely to be able to
2335 trigger these issues because of message size limits enforced within libssl.
2337 This issue was reported to OpenSSL Guido Vranken.
2341 *) Side channel attack on modular exponentiation
2343 A side-channel attack was found which makes use of cache-bank conflicts on
2344 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
2345 of RSA keys. The ability to exploit this issue is limited as it relies on
2346 an attacker who has control of code in a thread running on the same
2347 hyper-threaded core as the victim thread which is performing decryptions.
2349 This issue was reported to OpenSSL by Yuval Yarom, The University of
2350 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
2351 Nadia Heninger, University of Pennsylvania with more information at
2352 http://cachebleed.info.
2356 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
2357 if no keysize is specified with default_bits. This fixes an
2358 omission in an earlier change that changed all RSA/DSA key generation
2359 apps to use 2048 bits by default.
2362 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
2363 *) DH small subgroups
2365 Historically OpenSSL only ever generated DH parameters based on "safe"
2366 primes. More recently (in version 1.0.2) support was provided for
2367 generating X9.42 style parameter files such as those required for RFC 5114
2368 support. The primes used in such files may not be "safe". Where an
2369 application is using DH configured with parameters based on primes that are
2370 not "safe" then an attacker could use this fact to find a peer's private
2371 DH exponent. This attack requires that the attacker complete multiple
2372 handshakes in which the peer uses the same private DH exponent. For example
2373 this could be used to discover a TLS server's private DH exponent if it's
2374 reusing the private DH exponent or it's using a static DH ciphersuite.
2376 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
2377 TLS. It is not on by default. If the option is not set then the server
2378 reuses the same private DH exponent for the life of the server process and
2379 would be vulnerable to this attack. It is believed that many popular
2380 applications do set this option and would therefore not be at risk.
2382 The fix for this issue adds an additional check where a "q" parameter is
2383 available (as is the case in X9.42 based parameters). This detects the
2384 only known attack, and is the only possible defense for static DH
2385 ciphersuites. This could have some performance impact.
2387 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
2388 default and cannot be disabled. This could have some performance impact.
2390 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
2394 *) SSLv2 doesn't block disabled ciphers
2396 A malicious client can negotiate SSLv2 ciphers that have been disabled on
2397 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
2398 been disabled, provided that the SSLv2 protocol was not also disabled via
2401 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
2402 and Sebastian Schinzel.
2406 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
2408 *) BN_mod_exp may produce incorrect results on x86_64
2410 There is a carry propagating bug in the x86_64 Montgomery squaring
2411 procedure. No EC algorithms are affected. Analysis suggests that attacks
2412 against RSA and DSA as a result of this defect would be very difficult to
2413 perform and are not believed likely. Attacks against DH are considered just
2414 feasible (although very difficult) because most of the work necessary to
2415 deduce information about a private key may be performed offline. The amount
2416 of resources required for such an attack would be very significant and
2417 likely only accessible to a limited number of attackers. An attacker would
2418 additionally need online access to an unpatched system using the target
2419 private key in a scenario with persistent DH parameters and a private
2420 key that is shared between multiple clients. For example this can occur by
2421 default in OpenSSL DHE based SSL/TLS ciphersuites.
2423 This issue was reported to OpenSSL by Hanno Böck.
2427 *) Certificate verify crash with missing PSS parameter
2429 The signature verification routines will crash with a NULL pointer
2430 dereference if presented with an ASN.1 signature using the RSA PSS
2431 algorithm and absent mask generation function parameter. Since these
2432 routines are used to verify certificate signature algorithms this can be
2433 used to crash any certificate verification operation and exploited in a
2434 DoS attack. Any application which performs certificate verification is
2435 vulnerable including OpenSSL clients and servers which enable client
2438 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
2442 *) X509_ATTRIBUTE memory leak
2444 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
2445 memory. This structure is used by the PKCS#7 and CMS routines so any
2446 application which reads PKCS#7 or CMS data from untrusted sources is
2447 affected. SSL/TLS is not affected.
2449 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
2454 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
2455 This changes the decoding behaviour for some invalid messages,
2456 though the change is mostly in the more lenient direction, and
2457 legacy behaviour is preserved as much as possible.
2460 *) In DSA_generate_parameters_ex, if the provided seed is too short,
2462 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
2464 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
2466 *) Alternate chains certificate forgery
2468 During certificate verification, OpenSSL will attempt to find an
2469 alternative certificate chain if the first attempt to build such a chain
2470 fails. An error in the implementation of this logic can mean that an
2471 attacker could cause certain checks on untrusted certificates to be
2472 bypassed, such as the CA flag, enabling them to use a valid leaf
2473 certificate to act as a CA and "issue" an invalid certificate.
2475 This issue was reported to OpenSSL by Adam Langley/David Benjamin
2479 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
2481 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
2482 incompatibility in the handling of HMAC. The previous ABI has now been
2486 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
2488 *) Malformed ECParameters causes infinite loop
2490 When processing an ECParameters structure OpenSSL enters an infinite loop
2491 if the curve specified is over a specially malformed binary polynomial
2494 This can be used to perform denial of service against any
2495 system which processes public keys, certificate requests or
2496 certificates. This includes TLS clients and TLS servers with
2497 client authentication enabled.
2499 This issue was reported to OpenSSL by Joseph Barr-Pixton.
2503 *) Exploitable out-of-bounds read in X509_cmp_time
2505 X509_cmp_time does not properly check the length of the ASN1_TIME
2506 string and can read a few bytes out of bounds. In addition,
2507 X509_cmp_time accepts an arbitrary number of fractional seconds in the
2510 An attacker can use this to craft malformed certificates and CRLs of
2511 various sizes and potentially cause a segmentation fault, resulting in
2512 a DoS on applications that verify certificates or CRLs. TLS clients
2513 that verify CRLs are affected. TLS clients and servers with client
2514 authentication enabled may be affected if they use custom verification
2517 This issue was reported to OpenSSL by Robert Swiecki (Google), and
2518 independently by Hanno Böck.
2522 *) PKCS7 crash with missing EnvelopedContent
2524 The PKCS#7 parsing code does not handle missing inner EncryptedContent
2525 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
2526 with missing content and trigger a NULL pointer dereference on parsing.
2528 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
2529 structures from untrusted sources are affected. OpenSSL clients and
2530 servers are not affected.
2532 This issue was reported to OpenSSL by Michal Zalewski (Google).
2536 *) CMS verify infinite loop with unknown hash function
2538 When verifying a signedData message the CMS code can enter an infinite loop
2539 if presented with an unknown hash function OID. This can be used to perform
2540 denial of service against any system which verifies signedData messages using
2542 This issue was reported to OpenSSL by Johannes Bauer.
2546 *) Race condition handling NewSessionTicket
2548 If a NewSessionTicket is received by a multi-threaded client when attempting to
2549 reuse a previous ticket then a race condition can occur potentially leading to
2550 a double free of the ticket data.
2554 *) Only support 256-bit or stronger elliptic curves with the
2555 'ecdh_auto' setting (server) or by default (client). Of supported
2556 curves, prefer P-256 (both).
2559 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
2561 *) ClientHello sigalgs DoS fix
2563 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
2564 invalid signature algorithms extension a NULL pointer dereference will
2565 occur. This can be exploited in a DoS attack against the server.
2567 This issue was was reported to OpenSSL by David Ramos of Stanford
2570 [Stephen Henson and Matt Caswell]
2572 *) Multiblock corrupted pointer fix
2574 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
2575 feature only applies on 64 bit x86 architecture platforms that support AES
2576 NI instructions. A defect in the implementation of "multiblock" can cause
2577 OpenSSL's internal write buffer to become incorrectly set to NULL when
2578 using non-blocking IO. Typically, when the user application is using a
2579 socket BIO for writing, this will only result in a failed connection.
2580 However if some other BIO is used then it is likely that a segmentation
2581 fault will be triggered, thus enabling a potential DoS attack.
2583 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
2587 *) Segmentation fault in DTLSv1_listen fix
2589 The DTLSv1_listen function is intended to be stateless and processes the
2590 initial ClientHello from many peers. It is common for user code to loop
2591 over the call to DTLSv1_listen until a valid ClientHello is received with
2592 an associated cookie. A defect in the implementation of DTLSv1_listen means
2593 that state is preserved in the SSL object from one invocation to the next
2594 that can lead to a segmentation fault. Errors processing the initial
2595 ClientHello can trigger this scenario. An example of such an error could be
2596 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
2599 This issue was reported to OpenSSL by Per Allansson.
2603 *) Segmentation fault in ASN1_TYPE_cmp fix
2605 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
2606 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
2607 certificate signature algorithm consistency this can be used to crash any
2608 certificate verification operation and exploited in a DoS attack. Any
2609 application which performs certificate verification is vulnerable including
2610 OpenSSL clients and servers which enable client authentication.
2614 *) Segmentation fault for invalid PSS parameters fix
2616 The signature verification routines will crash with a NULL pointer
2617 dereference if presented with an ASN.1 signature using the RSA PSS
2618 algorithm and invalid parameters. Since these routines are used to verify
2619 certificate signature algorithms this can be used to crash any
2620 certificate verification operation and exploited in a DoS attack. Any
2621 application which performs certificate verification is vulnerable including
2622 OpenSSL clients and servers which enable client authentication.
2624 This issue was was reported to OpenSSL by Brian Carpenter.
2628 *) ASN.1 structure reuse memory corruption fix
2630 Reusing a structure in ASN.1 parsing may allow an attacker to cause
2631 memory corruption via an invalid write. Such reuse is and has been
2632 strongly discouraged and is believed to be rare.
2634 Applications that parse structures containing CHOICE or ANY DEFINED BY
2635 components may be affected. Certificate parsing (d2i_X509 and related
2636 functions) are however not affected. OpenSSL clients and servers are
2641 *) PKCS7 NULL pointer dereferences fix
2643 The PKCS#7 parsing code does not handle missing outer ContentInfo
2644 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
2645 missing content and trigger a NULL pointer dereference on parsing.
2647 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
2648 otherwise parse PKCS#7 structures from untrusted sources are
2649 affected. OpenSSL clients and servers are not affected.
2651 This issue was reported to OpenSSL by Michal Zalewski (Google).
2655 *) DoS via reachable assert in SSLv2 servers fix
2657 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
2658 servers that both support SSLv2 and enable export cipher suites by sending
2659 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
2661 This issue was discovered by Sean Burford (Google) and Emilia Käsper
2662 (OpenSSL development team).
2666 *) Empty CKE with client auth and DHE fix
2668 If client auth is used then a server can seg fault in the event of a DHE
2669 ciphersuite being selected and a zero length ClientKeyExchange message
2670 being sent by the client. This could be exploited in a DoS attack.
2674 *) Handshake with unseeded PRNG fix
2676 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
2677 with an unseeded PRNG. The conditions are:
2678 - The client is on a platform where the PRNG has not been seeded
2679 automatically, and the user has not seeded manually
2680 - A protocol specific client method version has been used (i.e. not
2681 SSL_client_methodv23)
2682 - A ciphersuite is used that does not require additional random data from
2683 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
2685 If the handshake succeeds then the client random that has been used will
2686 have been generated from a PRNG with insufficient entropy and therefore the
2687 output may be predictable.
2689 For example using the following command with an unseeded openssl will
2690 succeed on an unpatched platform:
2692 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
2696 *) Use After Free following d2i_ECPrivatekey error fix
2698 A malformed EC private key file consumed via the d2i_ECPrivateKey function
2699 could cause a use after free condition. This, in turn, could cause a double
2700 free in several private key parsing functions (such as d2i_PrivateKey
2701 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
2702 for applications that receive EC private keys from untrusted
2703 sources. This scenario is considered rare.
2705 This issue was discovered by the BoringSSL project and fixed in their
2710 *) X509_to_X509_REQ NULL pointer deref fix
2712 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
2713 the certificate key is invalid. This function is rarely used in practice.
2715 This issue was discovered by Brian Carpenter.
2719 *) Removed the export ciphers from the DEFAULT ciphers
2722 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
2724 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
2725 ARMv5 through ARMv8, as opposite to "locking" it to single one.
2726 So far those who have to target multiple platforms would compromise
2727 and argue that binary targeting say ARMv5 would still execute on
2728 ARMv8. "Universal" build resolves this compromise by providing
2729 near-optimal performance even on newer platforms.
2732 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
2733 (other platforms pending).
2734 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
2736 *) Add support for the SignedCertificateTimestampList certificate and
2737 OCSP response extensions from RFC6962.
2740 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
2741 for corner cases. (Certain input points at infinity could lead to
2742 bogus results, with non-infinity inputs mapped to infinity too.)
2745 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
2746 This covers AES, SHA256/512 and GHASH. "Initial" means that most
2747 common cases are optimized and there still is room for further
2748 improvements. Vector Permutation AES for Altivec is also added.
2751 *) Add support for little-endian ppc64 Linux target.
2752 [Marcelo Cerri (IBM)]
2754 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
2755 SHA1, SHA256 and GHASH. "Initial" means that most common cases
2756 are optimized and there still is room for further improvements.
2757 Both 32- and 64-bit modes are supported.
2758 [Andy Polyakov, Ard Biesheuvel (Linaro)]
2760 *) Improved ARMv7 NEON support.
2763 *) Support for SPARC Architecture 2011 crypto extensions, first
2764 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
2765 SHA256/512, MD5, GHASH and modular exponentiation.
2766 [Andy Polyakov, David Miller]
2768 *) Accelerated modular exponentiation for Intel processors, a.k.a.
2770 [Shay Gueron & Vlad Krasnov (Intel Corp)]
2772 *) Support for new and upcoming Intel processors, including AVX2,
2773 BMI and SHA ISA extensions. This includes additional "stitched"
2774 implementations, AESNI-SHA256 and GCM, and multi-buffer support
2777 This work was sponsored by Intel Corp.
2780 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
2781 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
2782 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
2785 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
2786 this fixes a limitation in previous versions of OpenSSL.
2789 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
2790 MGF1 digest and OAEP label.
2793 *) Add EVP support for key wrapping algorithms, to avoid problems with
2794 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
2795 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
2796 algorithms and include tests cases.
2799 *) Add functions to allocate and set the fields of an ECDSA_METHOD
2801 [Douglas E. Engert, Steve Henson]
2803 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
2804 difference in days and seconds between two tm or ASN1_TIME structures.
2807 *) Add -rev test option to s_server to just reverse order of characters
2808 received by client and send back to server. Also prints an abbreviated
2809 summary of the connection parameters.
2812 *) New option -brief for s_client and s_server to print out a brief summary
2813 of connection parameters.
2816 *) Add callbacks for arbitrary TLS extensions.
2817 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
2819 *) New option -crl_download in several openssl utilities to download CRLs
2820 from CRLDP extension in certificates.
2823 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
2826 *) New function X509_CRL_diff to generate a delta CRL from the difference
2827 of two full CRLs. Add support to "crl" utility.
2830 *) New functions to set lookup_crls function and to retrieve
2831 X509_STORE from X509_STORE_CTX.
2834 *) Print out deprecated issuer and subject unique ID fields in
2838 *) Extend OCSP I/O functions so they can be used for simple general purpose
2839 HTTP as well as OCSP. New wrapper function which can be used to download
2840 CRLs using the OCSP API.
2843 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
2846 *) SSL_CONF* functions. These provide a common framework for application
2847 configuration using configuration files or command lines.
2850 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
2851 message callback and prints the results. Needs compile time option
2852 "enable-ssl-trace". New options to s_client and s_server to enable
2856 *) New ctrl and macro to retrieve supported points extensions.
2857 Print out extension in s_server and s_client.
2860 *) New functions to retrieve certificate signature and signature
2864 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
2868 *) New Suite B modes for TLS code. These use and enforce the requirements
2869 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
2870 only use Suite B curves. The Suite B modes can be set by using the
2871 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
2874 *) New chain verification flags for Suite B levels of security. Check
2875 algorithms are acceptable when flags are set in X509_verify_cert.
2878 *) Make tls1_check_chain return a set of flags indicating checks passed
2879 by a certificate chain. Add additional tests to handle client
2880 certificates: checks for matching certificate type and issuer name
2884 *) If an attempt is made to use a signature algorithm not in the peer
2885 preference list abort the handshake. If client has no suitable
2886 signature algorithms in response to a certificate request do not
2887 use the certificate.
2890 *) If server EC tmp key is not in client preference list abort handshake.
2893 *) Add support for certificate stores in CERT structure. This makes it
2894 possible to have different stores per SSL structure or one store in
2895 the parent SSL_CTX. Include distinct stores for certificate chain
2896 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
2897 to build and store a certificate chain in CERT structure: returning
2898 an error if the chain cannot be built: this will allow applications
2899 to test if a chain is correctly configured.
2901 Note: if the CERT based stores are not set then the parent SSL_CTX
2902 store is used to retain compatibility with existing behaviour.
2906 *) New function ssl_set_client_disabled to set a ciphersuite disabled
2907 mask based on the current session, check mask when sending client
2908 hello and checking the requested ciphersuite.
2911 *) New ctrls to retrieve and set certificate types in a certificate
2912 request message. Print out received values in s_client. If certificate
2913 types is not set with custom values set sensible values based on
2914 supported signature algorithms.
2917 *) Support for distinct client and server supported signature algorithms.
2920 *) Add certificate callback. If set this is called whenever a certificate
2921 is required by client or server. An application can decide which
2922 certificate chain to present based on arbitrary criteria: for example
2923 supported signature algorithms. Add very simple example to s_server.
2924 This fixes many of the problems and restrictions of the existing client
2925 certificate callback: for example you can now clear an existing
2926 certificate and specify the whole chain.
2929 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
2930 the certificate can be used for (if anything). Set valid_flags field
2931 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
2932 to have similar checks in it.
2934 Add new "cert_flags" field to CERT structure and include a "strict mode".
2935 This enforces some TLS certificate requirements (such as only permitting
2936 certificate signature algorithms contained in the supported algorithms
2937 extension) which some implementations ignore: this option should be used
2938 with caution as it could cause interoperability issues.
2941 *) Update and tidy signature algorithm extension processing. Work out
2942 shared signature algorithms based on preferences and peer algorithms
2943 and print them out in s_client and s_server. Abort handshake if no
2944 shared signature algorithms.
2947 *) Add new functions to allow customised supported signature algorithms
2948 for SSL and SSL_CTX structures. Add options to s_client and s_server
2952 *) New function SSL_certs_clear() to delete all references to certificates
2953 from an SSL structure. Before this once a certificate had been added
2954 it couldn't be removed.
2957 *) Integrate hostname, email address and IP address checking with certificate
2958 verification. New verify options supporting checking in openssl utility.
2961 *) Fixes and wildcard matching support to hostname and email checking
2962 functions. Add manual page.
2963 [Florian Weimer (Red Hat Product Security Team)]
2965 *) New functions to check a hostname email or IP address against a
2966 certificate. Add options x509 utility to print results of checks against
2970 *) Fix OCSP checking.
2971 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
2973 *) Initial experimental support for explicitly trusted non-root CAs.
2974 OpenSSL still tries to build a complete chain to a root but if an
2975 intermediate CA has a trust setting included that is used. The first
2976 setting is used: whether to trust (e.g., -addtrust option to the x509
2980 *) Add -trusted_first option which attempts to find certificates in the
2981 trusted store even if an untrusted chain is also supplied.
2984 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
2985 platform support for Linux and Android.
2988 *) Support for linux-x32, ILP32 environment in x86_64 framework.
2991 *) Experimental multi-implementation support for FIPS capable OpenSSL.
2992 When in FIPS mode the approved implementations are used as normal,
2993 when not in FIPS mode the internal unapproved versions are used instead.
2994 This means that the FIPS capable OpenSSL isn't forced to use the
2995 (often lower performance) FIPS implementations outside FIPS mode.
2998 *) Transparently support X9.42 DH parameters when calling
2999 PEM_read_bio_DHparameters. This means existing applications can handle
3000 the new parameter format automatically.
3003 *) Initial experimental support for X9.42 DH parameter format: mainly
3004 to support use of 'q' parameter for RFC5114 parameters.
3007 *) Add DH parameters from RFC5114 including test data to dhtest.
3010 *) Support for automatic EC temporary key parameter selection. If enabled
3011 the most preferred EC parameters are automatically used instead of
3012 hardcoded fixed parameters. Now a server just has to call:
3013 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
3014 support ECDH and use the most appropriate parameters.
3017 *) Enhance and tidy EC curve and point format TLS extension code. Use
3018 static structures instead of allocation if default values are used.
3019 New ctrls to set curves we wish to support and to retrieve shared curves.
3020 Print out shared curves in s_server. New options to s_server and s_client
3021 to set list of supported curves.
3024 *) New ctrls to retrieve supported signature algorithms and
3025 supported curve values as an array of NIDs. Extend openssl utility
3026 to print out received values.
3029 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
3030 between NIDs and the more common NIST names such as "P-256". Enhance
3031 ecparam utility and ECC method to recognise the NIST names for curves.
3034 *) Enhance SSL/TLS certificate chain handling to support different
3035 chains for each certificate instead of one chain in the parent SSL_CTX.
3038 *) Support for fixed DH ciphersuite client authentication: where both
3039 server and client use DH certificates with common parameters.
3042 *) Support for fixed DH ciphersuites: those requiring DH server
3046 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
3048 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
3049 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
3050 X509_CINF_get_signature were reverted post internal team review.
3052 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
3054 *) Build fixes for the Windows and OpenVMS platforms
3055 [Matt Caswell and Richard Levitte]
3057 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
3059 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
3060 message can cause a segmentation fault in OpenSSL due to a NULL pointer
3061 dereference. This could lead to a Denial Of Service attack. Thanks to
3062 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
3066 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
3067 dtls1_buffer_record function under certain conditions. In particular this
3068 could occur if an attacker sent repeated DTLS records with the same
3069 sequence number but for the next epoch. The memory leak could be exploited
3070 by an attacker in a Denial of Service attack through memory exhaustion.
3071 Thanks to Chris Mueller for reporting this issue.
3075 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
3076 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
3077 method would be set to NULL which could later result in a NULL pointer
3078 dereference. Thanks to Frank Schmirler for reporting this issue.
3082 *) Abort handshake if server key exchange message is omitted for ephemeral
3085 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
3086 reporting this issue.
3090 *) Remove non-export ephemeral RSA code on client and server. This code
3091 violated the TLS standard by allowing the use of temporary RSA keys in
3092 non-export ciphersuites and could be used by a server to effectively
3093 downgrade the RSA key length used to a value smaller than the server
3094 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
3095 INRIA or reporting this issue.
3099 *) Fixed issue where DH client certificates are accepted without verification.
3100 An OpenSSL server will accept a DH certificate for client authentication
3101 without the certificate verify message. This effectively allows a client to
3102 authenticate without the use of a private key. This only affects servers
3103 which trust a client certificate authority which issues certificates
3104 containing DH keys: these are extremely rare and hardly ever encountered.
3105 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
3110 *) Ensure that the session ID context of an SSL is updated when its
3111 SSL_CTX is updated via SSL_set_SSL_CTX.
3113 The session ID context is typically set from the parent SSL_CTX,
3114 and can vary with the CTX.
3117 *) Fix various certificate fingerprint issues.
3119 By using non-DER or invalid encodings outside the signed portion of a
3120 certificate the fingerprint can be changed without breaking the signature.
3121 Although no details of the signed portion of the certificate can be changed
3122 this can cause problems with some applications: e.g. those using the
3123 certificate fingerprint for blacklists.
3125 1. Reject signatures with non zero unused bits.
3127 If the BIT STRING containing the signature has non zero unused bits reject
3128 the signature. All current signature algorithms require zero unused bits.
3130 2. Check certificate algorithm consistency.
3132 Check the AlgorithmIdentifier inside TBS matches the one in the
3133 certificate signature. NB: this will result in signature failure
3134 errors for some broken certificates.
3136 Thanks to Konrad Kraszewski from Google for reporting this issue.
3138 3. Check DSA/ECDSA signatures use DER.
3140 Re-encode DSA/ECDSA signatures and compare with the original received
3141 signature. Return an error if there is a mismatch.
3143 This will reject various cases including garbage after signature
3144 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
3145 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
3146 (negative or with leading zeroes).
3148 Further analysis was conducted and fixes were developed by Stephen Henson
3149 of the OpenSSL core team.
3154 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
3155 results on some platforms, including x86_64. This bug occurs at random
3156 with a very low probability, and is not known to be exploitable in any
3157 way, though its exact impact is difficult to determine. Thanks to Pieter
3158 Wuille (Blockstream) who reported this issue and also suggested an initial
3159 fix. Further analysis was conducted by the OpenSSL development team and
3160 Adam Langley of Google. The final fix was developed by Andy Polyakov of
3161 the OpenSSL core team.
3165 *) Do not resume sessions on the server if the negotiated protocol
3166 version does not match the session's version. Resuming with a different
3167 version, while not strictly forbidden by the RFC, is of questionable
3168 sanity and breaks all known clients.
3169 [David Benjamin, Emilia Käsper]
3171 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
3172 early CCS messages during renegotiation. (Note that because
3173 renegotiation is encrypted, this early CCS was not exploitable.)
3176 *) Tighten client-side session ticket handling during renegotiation:
3177 ensure that the client only accepts a session ticket if the server sends
3178 the extension anew in the ServerHello. Previously, a TLS client would
3179 reuse the old extension state and thus accept a session ticket if one was
3180 announced in the initial ServerHello.
3182 Similarly, ensure that the client requires a session ticket if one
3183 was advertised in the ServerHello. Previously, a TLS client would
3184 ignore a missing NewSessionTicket message.
3187 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
3189 *) SRTP Memory Leak.
3191 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
3192 sends a carefully crafted handshake message, to cause OpenSSL to fail
3193 to free up to 64k of memory causing a memory leak. This could be
3194 exploited in a Denial Of Service attack. This issue affects OpenSSL
3195 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
3196 whether SRTP is used or configured. Implementations of OpenSSL that
3197 have been compiled with OPENSSL_NO_SRTP defined are not affected.
3199 The fix was developed by the OpenSSL team.
3203 *) Session Ticket Memory Leak.
3205 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
3206 integrity of that ticket is first verified. In the event of a session
3207 ticket integrity check failing, OpenSSL will fail to free memory
3208 causing a memory leak. By sending a large number of invalid session
3209 tickets an attacker could exploit this issue in a Denial Of Service
3214 *) Build option no-ssl3 is incomplete.
3216 When OpenSSL is configured with "no-ssl3" as a build option, servers
3217 could accept and complete a SSL 3.0 handshake, and clients could be
3218 configured to send them.
3220 [Akamai and the OpenSSL team]
3222 *) Add support for TLS_FALLBACK_SCSV.
3223 Client applications doing fallback retries should call
3224 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
3226 [Adam Langley, Bodo Moeller]
3228 *) Add additional DigestInfo checks.
3230 Re-encode DigestInto in DER and check against the original when
3231 verifying RSA signature: this will reject any improperly encoded
3232 DigestInfo structures.
3234 Note: this is a precautionary measure and no attacks are currently known.
3238 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
3240 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
3241 SRP code can be overrun an internal buffer. Add sanity check that
3242 g, A, B < N to SRP code.
3244 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
3245 Group for discovering this issue.
3249 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
3250 TLS 1.0 instead of higher protocol versions when the ClientHello message
3251 is badly fragmented. This allows a man-in-the-middle attacker to force a
3252 downgrade to TLS 1.0 even if both the server and the client support a
3253 higher protocol version, by modifying the client's TLS records.
3255 Thanks to David Benjamin and Adam Langley (Google) for discovering and
3256 researching this issue.
3260 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
3261 to a denial of service attack. A malicious server can crash the client
3262 with a null pointer dereference (read) by specifying an anonymous (EC)DH
3263 ciphersuite and sending carefully crafted handshake messages.
3265 Thanks to Felix Gröbert (Google) for discovering and researching this
3270 *) By sending carefully crafted DTLS packets an attacker could cause openssl
3271 to leak memory. This can be exploited through a Denial of Service attack.
3272 Thanks to Adam Langley for discovering and researching this issue.
3276 *) An attacker can force openssl to consume large amounts of memory whilst
3277 processing DTLS handshake messages. This can be exploited through a
3278 Denial of Service attack.
3279 Thanks to Adam Langley for discovering and researching this issue.
3283 *) An attacker can force an error condition which causes openssl to crash
3284 whilst processing DTLS packets due to memory being freed twice. This
3285 can be exploited through a Denial of Service attack.
3286 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
3291 *) If a multithreaded client connects to a malicious server using a resumed
3292 session and the server sends an ec point format extension it could write
3293 up to 255 bytes to freed memory.
3295 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
3300 *) A malicious server can crash an OpenSSL client with a null pointer
3301 dereference (read) by specifying an SRP ciphersuite even though it was not
3302 properly negotiated with the client. This can be exploited through a
3303 Denial of Service attack.
3305 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
3306 discovering and researching this issue.
3310 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
3311 X509_name_oneline, X509_name_print_ex et al. to leak some information
3312 from the stack. Applications may be affected if they echo pretty printing
3313 output to the attacker.
3315 Thanks to Ivan Fratric (Google) for discovering this issue.
3317 [Emilia Käsper, and Steve Henson]
3319 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3320 for corner cases. (Certain input points at infinity could lead to
3321 bogus results, with non-infinity inputs mapped to infinity too.)
3324 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
3326 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
3327 handshake can force the use of weak keying material in OpenSSL
3328 SSL/TLS clients and servers.
3330 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
3331 researching this issue. (CVE-2014-0224)
3332 [KIKUCHI Masashi, Steve Henson]
3334 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
3335 OpenSSL DTLS client the code can be made to recurse eventually crashing
3338 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
3340 [Imre Rad, Steve Henson]
3342 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
3343 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
3344 client or server. This is potentially exploitable to run arbitrary
3345 code on a vulnerable client or server.
3347 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
3348 [Jüri Aedla, Steve Henson]
3350 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
3351 are subject to a denial of service attack.
3353 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
3354 this issue. (CVE-2014-3470)
3355 [Felix Gröbert, Ivan Fratric, Steve Henson]
3357 *) Harmonize version and its documentation. -f flag is used to display
3359 [mancha <mancha1@zoho.com>]
3361 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
3362 in i2d_ECPrivateKey.
3363 [mancha <mancha1@zoho.com>]
3365 *) Fix some double frees. These are not thought to be exploitable.
3366 [mancha <mancha1@zoho.com>]
3368 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
3370 *) A missing bounds check in the handling of the TLS heartbeat extension
3371 can be used to reveal up to 64k of memory to a connected client or
3374 Thanks for Neel Mehta of Google Security for discovering this bug and to
3375 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
3376 preparing the fix (CVE-2014-0160)
3377 [Adam Langley, Bodo Moeller]
3379 *) Fix for the attack described in the paper "Recovering OpenSSL
3380 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
3381 by Yuval Yarom and Naomi Benger. Details can be obtained from:
3382 http://eprint.iacr.org/2014/140
3384 Thanks to Yuval Yarom and Naomi Benger for discovering this
3385 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
3386 [Yuval Yarom and Naomi Benger]
3388 *) TLS pad extension: draft-agl-tls-padding-03
3390 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
3391 TLS client Hello record length value would otherwise be > 255 and
3392 less that 512 pad with a dummy extension containing zeroes so it
3393 is at least 512 bytes long.
3395 [Adam Langley, Steve Henson]
3397 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
3399 *) Fix for TLS record tampering bug. A carefully crafted invalid
3400 handshake could crash OpenSSL with a NULL pointer exception.
3401 Thanks to Anton Johansson for reporting this issues.
3404 *) Keep original DTLS digest and encryption contexts in retransmission
3405 structures so we can use the previous session parameters if they need
3406 to be resent. (CVE-2013-6450)
3409 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
3410 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
3411 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
3412 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
3413 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
3414 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
3415 [Rob Stradling, Adam Langley]
3417 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
3419 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
3420 supporting platforms or when small records were transferred.
3421 [Andy Polyakov, Steve Henson]
3423 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
3425 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
3427 This addresses the flaw in CBC record processing discovered by
3428 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
3429 at: http://www.isg.rhul.ac.uk/tls/
3431 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
3432 Security Group at Royal Holloway, University of London
3433 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
3434 Emilia Käsper for the initial patch.
3436 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
3438 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
3439 ciphersuites which can be exploited in a denial of service attack.
3440 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
3441 and detecting this bug and to Wolfgang Ettlinger
3442 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
3446 *) Return an error when checking OCSP signatures when key is NULL.
3447 This fixes a DoS attack. (CVE-2013-0166)
3450 *) Make openssl verify return errors.
3451 [Chris Palmer <palmer@google.com> and Ben Laurie]
3453 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
3454 the right response is stapled. Also change SSL_get_certificate()
3455 so it returns the certificate actually sent.
3456 See http://rt.openssl.org/Ticket/Display.html?id=2836.
3457 [Rob Stradling <rob.stradling@comodo.com>]
3459 *) Fix possible deadlock when decoding public keys.
3462 *) Don't use TLS 1.0 record version number in initial client hello
3466 Changes between 1.0.1b and 1.0.1c [10 May 2012]
3468 *) Sanity check record length before skipping explicit IV in TLS
3469 1.2, 1.1 and DTLS to fix DoS attack.
3471 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
3472 fuzzing as a service testing platform.
3476 *) Initialise tkeylen properly when encrypting CMS messages.
3477 Thanks to Solar Designer of Openwall for reporting this issue.
3480 *) In FIPS mode don't try to use composite ciphers as they are not
3484 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
3486 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
3487 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
3488 mean any application compiled against OpenSSL 1.0.0 headers setting
3489 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling
3490 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
3491 0x10000000L Any application which was previously compiled against
3492 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
3493 will need to be recompiled as a result. Letting be results in
3494 inability to disable specifically TLS 1.1 and in client context,
3495 in unlike event, limit maximum offered version to TLS 1.0 [see below].
3498 *) In order to ensure interoperability SSL_OP_NO_protocolX does not
3499 disable just protocol X, but all protocols above X *if* there are
3500 protocols *below* X still enabled. In more practical terms it means
3501 that if application wants to disable TLS1.0 in favor of TLS1.1 and
3502 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
3503 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
3507 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
3509 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
3510 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
3511 in CRYPTO_realloc_clean.
3513 Thanks to Tavis Ormandy, Google Security Team, for discovering this
3514 issue and to Adam Langley <agl@chromium.org> for fixing it.
3516 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
3518 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
3521 *) Workarounds for some broken servers that "hang" if a client hello
3522 record length exceeds 255 bytes.
3524 1. Do not use record version number > TLS 1.0 in initial client
3525 hello: some (but not all) hanging servers will now work.
3526 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
3527 the number of ciphers sent in the client hello. This should be
3528 set to an even number, such as 50, for example by passing:
3529 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
3530 Most broken servers should now work.
3531 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
3532 TLS 1.2 client support entirely.
3535 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
3538 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
3540 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
3541 STRING form instead of a DigestInfo.
3544 *) The format used for MDC2 RSA signatures is inconsistent between EVP
3545 and the RSA_sign/RSA_verify functions. This was made more apparent when
3546 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
3547 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
3548 the correct format in RSA_verify so both forms transparently work.
3551 *) Some servers which support TLS 1.0 can choke if we initially indicate
3552 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
3553 encrypted premaster secret. As a workaround use the maximum permitted
3554 client version in client hello, this should keep such servers happy
3555 and still work with previous versions of OpenSSL.
3558 *) Add support for TLS/DTLS heartbeats.
3559 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3561 *) Add support for SCTP.
3562 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3564 *) Improved PRNG seeding for VOS.
3565 [Paul Green <Paul.Green@stratus.com>]
3567 *) Extensive assembler packs updates, most notably:
3569 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
3570 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
3571 - x86_64: bit-sliced AES implementation;
3572 - ARM: NEON support, contemporary platforms optimizations;
3573 - s390x: z196 support;
3574 - *: GHASH and GF(2^m) multiplication implementations;
3578 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
3579 (removal of unnecessary code)
3580 [Peter Sylvester <peter.sylvester@edelweb.fr>]
3582 *) Add TLS key material exporter from RFC 5705.
3585 *) Add DTLS-SRTP negotiation from RFC 5764.
3588 *) Add Next Protocol Negotiation,
3589 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
3590 disabled with a no-npn flag to config or Configure. Code donated
3592 [Adam Langley <agl@google.com> and Ben Laurie]
3594 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
3595 NIST-P256, NIST-P521, with constant-time single point multiplication on
3596 typical inputs. Compiler support for the nonstandard type __uint128_t is
3597 required to use this (present in gcc 4.4 and later, for 64-bit builds).
3598 Code made available under Apache License version 2.0.
3600 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
3601 line to include this in your build of OpenSSL, and run "make depend" (or
3602 "make update"). This enables the following EC_METHODs:
3604 EC_GFp_nistp224_method()
3605 EC_GFp_nistp256_method()
3606 EC_GFp_nistp521_method()
3608 EC_GROUP_new_by_curve_name() will automatically use these (while
3609 EC_GROUP_new_curve_GFp() currently prefers the more flexible
3611 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
3613 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
3614 all platforms. Move ssize_t definition from e_os.h to the public
3615 header file e_os2.h as it now appears in public header file cms.h
3618 *) New -sigopt option to the ca, req and x509 utilities. Additional
3619 signature parameters can be passed using this option and in
3623 *) Add RSA PSS signing function. This will generate and set the
3624 appropriate AlgorithmIdentifiers for PSS based on those in the
3625 corresponding EVP_MD_CTX structure. No application support yet.
3628 *) Support for companion algorithm specific ASN1 signing routines.
3629 New function ASN1_item_sign_ctx() signs a pre-initialised
3630 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
3631 the appropriate parameters.
3634 *) Add new algorithm specific ASN1 verification initialisation function
3635 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
3636 handling will be the same no matter what EVP_PKEY_METHOD is used.
3637 Add a PSS handler to support verification of PSS signatures: checked
3638 against a number of sample certificates.
3641 *) Add signature printing for PSS. Add PSS OIDs.
3642 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
3644 *) Add algorithm specific signature printing. An individual ASN1 method
3645 can now print out signatures instead of the standard hex dump.
3647 More complex signatures (e.g. PSS) can print out more meaningful
3648 information. Include DSA version that prints out the signature
3652 *) Password based recipient info support for CMS library: implementing
3656 *) Split password based encryption into PBES2 and PBKDF2 functions. This
3657 neatly separates the code into cipher and PBE sections and is required
3658 for some algorithms that split PBES2 into separate pieces (such as
3659 password based CMS).
3662 *) Session-handling fixes:
3663 - Fix handling of connections that are resuming with a session ID,
3664 but also support Session Tickets.
3665 - Fix a bug that suppressed issuing of a new ticket if the client
3666 presented a ticket with an expired session.
3667 - Try to set the ticket lifetime hint to something reasonable.
3668 - Make tickets shorter by excluding irrelevant information.
3669 - On the client side, don't ignore renewed tickets.
3670 [Adam Langley, Bodo Moeller (Google)]
3672 *) Fix PSK session representation.
3675 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
3677 This work was sponsored by Intel.
3680 *) Add GCM support to TLS library. Some custom code is needed to split
3681 the IV between the fixed (from PRF) and explicit (from TLS record)
3682 portions. This adds all GCM ciphersuites supported by RFC5288 and
3683 RFC5289. Generalise some AES* cipherstrings to include GCM and
3684 add a special AESGCM string for GCM only.
3687 *) Expand range of ctrls for AES GCM. Permit setting invocation
3688 field on decrypt and retrieval of invocation field only on encrypt.
3691 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
3692 As required by RFC5289 these ciphersuites cannot be used if for
3693 versions of TLS earlier than 1.2.
3696 *) For FIPS capable OpenSSL interpret a NULL default public key method
3697 as unset and return the appropriate default but do *not* set the default.
3698 This means we can return the appropriate method in applications that
3699 switch between FIPS and non-FIPS modes.
3702 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
3703 ENGINE is used then we cannot handle that in the FIPS module so we
3704 keep original code iff non-FIPS operations are allowed.
3707 *) Add -attime option to openssl utilities.
3708 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
3710 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
3713 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
3714 FIPS EC methods unconditionally for now.
3717 *) New build option no-ec2m to disable characteristic 2 code.
3720 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
3721 all cases can be covered as some introduce binary incompatibilities.
3724 *) Redirect RSA operations to FIPS module including keygen,
3725 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
3728 *) Add similar low level API blocking to ciphers.
3731 *) Low level digest APIs are not approved in FIPS mode: any attempt
3732 to use these will cause a fatal error. Applications that *really* want
3733 to use them can use the private_* version instead.
3736 *) Redirect cipher operations to FIPS module for FIPS builds.
3739 *) Redirect digest operations to FIPS module for FIPS builds.
3742 *) Update build system to add "fips" flag which will link in fipscanister.o
3743 for static and shared library builds embedding a signature if needed.
3746 *) Output TLS supported curves in preference order instead of numerical
3747 order. This is currently hardcoded for the highest order curves first.
3748 This should be configurable so applications can judge speed vs strength.
3751 *) Add TLS v1.2 server support for client authentication.
3754 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
3758 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
3759 FIPS modules versions.
3762 *) Add TLS v1.2 client side support for client authentication. Keep cache
3763 of handshake records longer as we don't know the hash algorithm to use
3764 until after the certificate request message is received.
3767 *) Initial TLS v1.2 client support. Add a default signature algorithms
3768 extension including all the algorithms we support. Parse new signature
3769 format in client key exchange. Relax some ECC signing restrictions for
3770 TLS v1.2 as indicated in RFC5246.
3773 *) Add server support for TLS v1.2 signature algorithms extension. Switch
3774 to new signature format when needed using client digest preference.
3775 All server ciphersuites should now work correctly in TLS v1.2. No client
3776 support yet and no support for client certificates.
3779 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
3780 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
3781 ciphersuites. At present only RSA key exchange ciphersuites work with
3782 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
3783 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
3784 and version checking.
3787 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
3788 with this defined it will not be affected by any changes to ssl internal
3789 structures. Add several utility functions to allow openssl application
3790 to work with OPENSSL_NO_SSL_INTERN defined.
3793 *) A long standing patch to add support for SRP from EdelWeb (Peter
3794 Sylvester and Christophe Renou) was integrated.
3795 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
3796 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
3799 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
3802 *) Permit abbreviated handshakes when renegotiating using the function
3803 SSL_renegotiate_abbreviated().
3804 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3806 *) Add call to ENGINE_register_all_complete() to
3807 ENGINE_load_builtin_engines(), so some implementations get used
3808 automatically instead of needing explicit application support.
3811 *) Add support for TLS key exporter as described in RFC5705.
3812 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
3814 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
3815 a few changes are required:
3817 Add SSL_OP_NO_TLSv1_1 flag.
3818 Add TLSv1_1 methods.
3819 Update version checking logic to handle version 1.1.
3820 Add explicit IV handling (ported from DTLS code).
3821 Add command line options to s_client/s_server.
3824 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
3826 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
3827 in CMS and PKCS7 code. When RSA decryption fails use a random key for
3828 content decryption and always return the same error. Note: this attack
3829 needs on average 2^20 messages so it only affects automated senders. The
3830 old behaviour can be re-enabled in the CMS code by setting the
3831 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
3832 an MMA defence is not necessary.
3833 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
3834 this issue. (CVE-2012-0884)
3837 *) Fix CVE-2011-4619: make sure we really are receiving a
3838 client hello before rejecting multiple SGC restarts. Thanks to
3839 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
3842 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
3844 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
3845 Thanks to Antonio Martin, Enterprise Secure Access Research and
3846 Development, Cisco Systems, Inc. for discovering this bug and
3847 preparing a fix. (CVE-2012-0050)
3850 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
3852 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
3853 of the Vaudenay padding oracle attack on CBC mode encryption
3854 which enables an efficient plaintext recovery attack against
3855 the OpenSSL implementation of DTLS. Their attack exploits timing
3856 differences arising during decryption processing. A research
3857 paper describing this attack can be found at:
3858 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
3859 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
3860 Security Group at Royal Holloway, University of London
3861 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
3862 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
3863 for preparing the fix. (CVE-2011-4108)
3864 [Robin Seggelmann, Michael Tuexen]
3866 *) Clear bytes used for block padding of SSL 3.0 records.
3868 [Adam Langley (Google)]
3870 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
3871 Kadianakis <desnacked@gmail.com> for discovering this issue and
3872 Adam Langley for preparing the fix. (CVE-2011-4619)
3873 [Adam Langley (Google)]
3875 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
3876 [Andrey Kulikov <amdeich@gmail.com>]
3878 *) Prevent malformed RFC3779 data triggering an assertion failure.
3879 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
3880 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
3881 [Rob Austein <sra@hactrn.net>]
3883 *) Improved PRNG seeding for VOS.
3884 [Paul Green <Paul.Green@stratus.com>]
3886 *) Fix ssl_ciph.c set-up race.
3887 [Adam Langley (Google)]
3889 *) Fix spurious failures in ecdsatest.c.
3890 [Emilia Käsper (Google)]
3892 *) Fix the BIO_f_buffer() implementation (which was mixing different
3893 interpretations of the '..._len' fields).
3894 [Adam Langley (Google)]
3896 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
3897 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
3898 threads won't reuse the same blinding coefficients.
3900 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
3901 lock to call BN_BLINDING_invert_ex, and avoids one use of
3902 BN_BLINDING_update for each BN_BLINDING structure (previously,
3903 the last update always remained unused).
3904 [Emilia Käsper (Google)]
3906 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
3907 [Bob Buckholz (Google)]
3909 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
3911 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
3912 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
3913 [Kaspar Brand <ossl@velox.ch>]
3915 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
3916 for multi-threaded use of ECDH. (CVE-2011-3210)
3917 [Adam Langley (Google)]
3919 *) Fix x509_name_ex_d2i memory leak on bad inputs.
3922 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
3923 signature public key algorithm by using OID xref utilities instead.
3924 Before this you could only use some ECC ciphersuites with SHA1 only.
3927 *) Add protection against ECDSA timing attacks as mentioned in the paper
3928 by Billy Bob Brumley and Nicola Tuveri, see:
3930 http://eprint.iacr.org/2011/232.pdf
3932 [Billy Bob Brumley and Nicola Tuveri]
3934 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
3936 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
3937 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
3939 *) Fix bug in string printing code: if *any* escaping is enabled we must
3940 escape the escape character (backslash) or the resulting string is
3944 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
3946 *) Disable code workaround for ancient and obsolete Netscape browsers
3947 and servers: an attacker can use it in a ciphersuite downgrade attack.
3948 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
3951 *) Fixed J-PAKE implementation error, originally discovered by
3952 Sebastien Martini, further info and confirmation from Stefan
3953 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
3956 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
3958 *) Fix extension code to avoid race conditions which can result in a buffer
3959 overrun vulnerability: resumed sessions must not be modified as they can
3960 be shared by multiple threads. CVE-2010-3864
3963 *) Fix WIN32 build system to correctly link an ENGINE directory into
3967 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
3969 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
3971 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
3973 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
3975 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
3976 context. The operation can be customised via the ctrl mechanism in
3977 case ENGINEs want to include additional functionality.
3980 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
3983 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
3984 output hashes compatible with older versions of OpenSSL.
3985 [Willy Weisz <weisz@vcpc.univie.ac.at>]
3987 *) Fix compression algorithm handling: if resuming a session use the
3988 compression algorithm of the resumed session instead of determining
3989 it from client hello again. Don't allow server to change algorithm.
3992 *) Add load_crls() function to apps tidying load_certs() too. Add option
3993 to verify utility to allow additional CRLs to be included.
3996 *) Update OCSP request code to permit adding custom headers to the request:
3997 some responders need this.
4000 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
4002 [Julia Lawall <julia@diku.dk>]
4004 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
4005 needlessly dereferenced structures, used obsolete functions and
4006 didn't handle all updated verify codes correctly.
4009 *) Disable MD2 in the default configuration.
4012 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
4013 indicate the initial BIO being pushed or popped. This makes it possible
4014 to determine whether the BIO is the one explicitly called or as a result
4015 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
4016 it handles reference counts correctly and doesn't zero out the I/O bio
4017 when it is not being explicitly popped. WARNING: applications which
4018 included workarounds for the old buggy behaviour will need to be modified
4019 or they could free up already freed BIOs.
4022 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
4023 renaming to all platforms (within the 0.9.8 branch, this was
4024 done conditionally on Netware platforms to avoid a name clash).
4025 [Guenter <lists@gknw.net>]
4027 *) Add ECDHE and PSK support to DTLS.
4028 [Michael Tuexen <tuexen@fh-muenster.de>]
4030 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
4034 *) Add "missing" function EVP_MD_flags() (without this the only way to
4035 retrieve a digest flags is by accessing the structure directly. Update
4036 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
4037 or cipher is registered as in the "from" argument. Print out all
4038 registered digests in the dgst usage message instead of manually
4039 attempting to work them out.
4042 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
4043 this allows the use of compression and extensions. Change default cipher
4044 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
4045 by default unless an application cipher string requests it.
4048 *) Alter match criteria in PKCS12_parse(). It used to try to use local
4049 key ids to find matching certificates and keys but some PKCS#12 files
4050 don't follow the (somewhat unwritten) rules and this strategy fails.
4051 Now just gather all certificates together and the first private key
4052 then look for the first certificate that matches the key.
4055 *) Support use of registered digest and cipher names for dgst and cipher
4056 commands instead of having to add each one as a special case. So now
4063 openssl dgst -sha256 foo
4065 and this works for ENGINE based algorithms too.
4069 *) Update Gost ENGINE to support parameter files.
4070 [Victor B. Wagner <vitus@cryptocom.ru>]
4072 *) Support GeneralizedTime in ca utility.
4073 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
4075 *) Enhance the hash format used for certificate directory links. The new
4076 form uses the canonical encoding (meaning equivalent names will work
4077 even if they aren't identical) and uses SHA1 instead of MD5. This form
4078 is incompatible with the older format and as a result c_rehash should
4079 be used to rebuild symbolic links.
4082 *) Make PKCS#8 the default write format for private keys, replacing the
4083 traditional format. This form is standardised, more secure and doesn't
4084 include an implicit MD5 dependency.
4087 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
4088 committed to OpenSSL should pass this lot as a minimum.
4091 *) Add session ticket override functionality for use by EAP-FAST.
4092 [Jouni Malinen <j@w1.fi>]
4094 *) Modify HMAC functions to return a value. Since these can be implemented
4095 in an ENGINE errors can occur.
4098 *) Type-checked OBJ_bsearch_ex.
4101 *) Type-checked OBJ_bsearch. Also some constification necessitated
4102 by type-checking. Still to come: TXT_DB, bsearch(?),
4103 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
4107 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
4108 seconds to a tm structure directly, instead of going through OS
4109 specific date routines. This avoids any issues with OS routines such
4110 as the year 2038 bug. New *_adj() functions for ASN1 time structures
4111 and X509_time_adj_ex() to cover the extended range. The existing
4112 X509_time_adj() is still usable and will no longer have any date issues.
4115 *) Delta CRL support. New use deltas option which will attempt to locate
4116 and search any appropriate delta CRLs available.
4118 This work was sponsored by Google.
4121 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
4122 code and add additional score elements. Validate alternate CRL paths
4123 as part of the CRL checking and indicate a new error "CRL path validation
4124 error" in this case. Applications wanting additional details can use
4125 the verify callback and check the new "parent" field. If this is not
4126 NULL CRL path validation is taking place. Existing applications won't
4127 see this because it requires extended CRL support which is off by
4130 This work was sponsored by Google.
4133 *) Support for freshest CRL extension.
4135 This work was sponsored by Google.
4138 *) Initial indirect CRL support. Currently only supported in the CRLs
4139 passed directly and not via lookup. Process certificate issuer
4140 CRL entry extension and lookup CRL entries by bother issuer name
4141 and serial number. Check and process CRL issuer entry in IDP extension.
4143 This work was sponsored by Google.
4146 *) Add support for distinct certificate and CRL paths. The CRL issuer
4147 certificate is validated separately in this case. Only enabled if
4148 an extended CRL support flag is set: this flag will enable additional
4149 CRL functionality in future.
4151 This work was sponsored by Google.
4154 *) Add support for policy mappings extension.
4156 This work was sponsored by Google.
4159 *) Fixes to pathlength constraint, self issued certificate handling,
4160 policy processing to align with RFC3280 and PKITS tests.
4162 This work was sponsored by Google.
4165 *) Support for name constraints certificate extension. DN, email, DNS
4166 and URI types are currently supported.
4168 This work was sponsored by Google.
4171 *) To cater for systems that provide a pointer-based thread ID rather
4172 than numeric, deprecate the current numeric thread ID mechanism and
4173 replace it with a structure and associated callback type. This
4174 mechanism allows a numeric "hash" to be extracted from a thread ID in
4175 either case, and on platforms where pointers are larger than 'long',
4176 mixing is done to help ensure the numeric 'hash' is usable even if it
4177 can't be guaranteed unique. The default mechanism is to use "&errno"
4178 as a pointer-based thread ID to distinguish between threads.
4180 Applications that want to provide their own thread IDs should now use
4181 CRYPTO_THREADID_set_callback() to register a callback that will call
4182 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
4184 Note that ERR_remove_state() is now deprecated, because it is tied
4185 to the assumption that thread IDs are numeric. ERR_remove_state(0)
4186 to free the current thread's error state should be replaced by
4187 ERR_remove_thread_state(NULL).
4189 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
4190 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
4191 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
4192 application was previously providing a numeric thread callback that
4193 was inappropriate for distinguishing threads, then uniqueness might
4194 have been obtained with &errno that happened immediately in the
4195 intermediate development versions of OpenSSL; this is no longer the
4196 case, the numeric thread callback will now override the automatic use
4198 [Geoff Thorpe, with help from Bodo Moeller]
4200 *) Initial support for different CRL issuing certificates. This covers a
4201 simple case where the self issued certificates in the chain exist and
4202 the real CRL issuer is higher in the existing chain.
4204 This work was sponsored by Google.
4207 *) Removed effectively defunct crypto/store from the build.
4210 *) Revamp of STACK to provide stronger type-checking. Still to come:
4211 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
4212 ASN1_STRING, CONF_VALUE.
4215 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
4216 RAM on SSL connections. This option can save about 34k per idle SSL.
4219 *) Revamp of LHASH to provide stronger type-checking. Still to come:
4220 STACK, TXT_DB, bsearch, qsort.
4223 *) Initial support for Cryptographic Message Syntax (aka CMS) based
4224 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
4225 support for data, signedData, compressedData, digestedData and
4226 encryptedData, envelopedData types included. Scripts to check against
4227 RFC4134 examples draft and interop and consistency checks of many
4228 content types and variants.
4231 *) Add options to enc utility to support use of zlib compression BIO.
4234 *) Extend mk1mf to support importing of options and assembly language
4235 files from Configure script, currently only included in VC-WIN32.
4236 The assembly language rules can now optionally generate the source
4237 files from the associated perl scripts.
4240 *) Implement remaining functionality needed to support GOST ciphersuites.
4241 Interop testing has been performed using CryptoPro implementations.
4242 [Victor B. Wagner <vitus@cryptocom.ru>]
4244 *) s390x assembler pack.
4247 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
4251 *) Implement Opaque PRF Input TLS extension as specified in
4252 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
4253 official specification yet and no extension type assignment by
4254 IANA exists, this extension (for now) will have to be explicitly
4255 enabled when building OpenSSL by providing the extension number
4256 to use. For example, specify an option
4258 -DTLSEXT_TYPE_opaque_prf_input=0x9527
4260 to the "config" or "Configure" script to enable the extension,
4261 assuming extension number 0x9527 (which is a completely arbitrary
4262 and unofficial assignment based on the MD5 hash of the Internet
4263 Draft). Note that by doing so, you potentially lose
4264 interoperability with other TLS implementations since these might
4265 be using the same extension number for other purposes.
4267 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
4268 opaque PRF input value to use in the handshake. This will create
4269 an internal copy of the length-'len' string at 'src', and will
4270 return non-zero for success.
4272 To get more control and flexibility, provide a callback function
4275 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
4276 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
4280 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
4283 Callback function 'cb' will be called in handshakes, and is
4284 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
4285 Argument 'arg' is for application purposes (the value as given to
4286 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
4287 be provided to the callback function). The callback function
4288 has to return non-zero to report success: usually 1 to use opaque
4289 PRF input just if possible, or 2 to enforce use of the opaque PRF
4290 input. In the latter case, the library will abort the handshake
4291 if opaque PRF input is not successfully negotiated.
4293 Arguments 'peerinput' and 'len' given to the callback function
4294 will always be NULL and 0 in the case of a client. A server will
4295 see the client's opaque PRF input through these variables if
4296 available (NULL and 0 otherwise). Note that if the server
4297 provides an opaque PRF input, the length must be the same as the
4298 length of the client's opaque PRF input.
4300 Note that the callback function will only be called when creating
4301 a new session (session resumption can resume whatever was
4302 previously negotiated), and will not be called in SSL 2.0
4303 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
4304 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
4305 for applications that need to enforce opaque PRF input.
4309 *) Update ssl code to support digests other than SHA1+MD5 for handshake
4312 [Victor B. Wagner <vitus@cryptocom.ru>]
4314 *) Add RFC4507 support to OpenSSL. This includes the corrections in
4315 RFC4507bis. The encrypted ticket format is an encrypted encoded
4316 SSL_SESSION structure, that way new session features are automatically
4319 If a client application caches session in an SSL_SESSION structure
4320 support is transparent because tickets are now stored in the encoded
4323 The SSL_CTX structure automatically generates keys for ticket
4324 protection in servers so again support should be possible
4325 with no application modification.
4327 If a client or server wishes to disable RFC4507 support then the option
4328 SSL_OP_NO_TICKET can be set.
4330 Add a TLS extension debugging callback to allow the contents of any client
4331 or server extensions to be examined.
4333 This work was sponsored by Google.
4336 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
4337 OpenSSL should now compile cleanly on gcc 4.2
4338 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
4340 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
4341 support including streaming MAC support: this is required for GOST
4342 ciphersuite support.
4343 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
4345 *) Add option -stream to use PKCS#7 streaming in smime utility. New
4346 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
4347 to output in BER and PEM format.
4350 *) Experimental support for use of HMAC via EVP_PKEY interface. This
4351 allows HMAC to be handled via the EVP_DigestSign*() interface. The
4352 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
4353 ENGINE support for HMAC keys which are unextractable. New -mac and
4354 -macopt options to dgst utility.
4357 *) New option -sigopt to dgst utility. Update dgst to use
4358 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
4359 alternative signing parameters such as X9.31 or PSS in the dgst
4363 *) Change ssl_cipher_apply_rule(), the internal function that does
4364 the work each time a ciphersuite string requests enabling
4365 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
4366 removing ("!foo+bar") a class of ciphersuites: Now it maintains
4367 the order of disabled ciphersuites such that those ciphersuites
4368 that most recently went from enabled to disabled not only stay
4369 in order with respect to each other, but also have higher priority
4370 than other disabled ciphersuites the next time ciphersuites are
4373 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
4374 the same ciphersuites as with "HIGH" alone, but in a specific
4375 order where the PSK ciphersuites come first (since they are the
4376 most recently disabled ciphersuites when "HIGH" is parsed).
4378 Also, change ssl_create_cipher_list() (using this new
4379 functionality) such that between otherwise identical
4380 ciphersuites, ephemeral ECDH is preferred over ephemeral DH in
4384 *) Change ssl_create_cipher_list() so that it automatically
4385 arranges the ciphersuites in reasonable order before starting
4386 to process the rule string. Thus, the definition for "DEFAULT"
4387 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
4388 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
4389 This makes it much easier to arrive at a reasonable default order
4390 in applications for which anonymous ciphers are OK (meaning
4391 that you can't actually use DEFAULT).
4392 [Bodo Moeller; suggested by Victor Duchovni]
4394 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
4395 processing) into multiple integers instead of setting
4396 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
4397 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
4398 (These masks as well as the individual bit definitions are hidden
4399 away into the non-exported interface ssl/ssl_locl.h, so this
4400 change to the definition of the SSL_CIPHER structure shouldn't
4401 affect applications.) This give us more bits for each of these
4402 categories, so there is no longer a need to coagulate AES128 and
4403 AES256 into a single algorithm bit, and to coagulate Camellia128
4404 and Camellia256 into a single algorithm bit, which has led to all
4407 Thus, among other things, the kludge introduced in 0.9.7m and
4408 0.9.8e for masking out AES256 independently of AES128 or masking
4409 out Camellia256 independently of AES256 is not needed here in 0.9.9.
4411 With the change, we also introduce new ciphersuite aliases that
4412 so far were missing: "AES128", "AES256", "CAMELLIA128", and
4416 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
4417 Use the leftmost N bytes of the signature input if the input is
4418 larger than the prime q (with N being the size in bytes of q).
4421 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
4422 it yet and it is largely untested.
4425 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
4428 *) Initial incomplete changes to avoid need for function casts in OpenSSL
4429 some compilers (gcc 4.2 and later) reject their use. Safestack is
4430 reimplemented. Update ASN1 to avoid use of legacy functions.
4433 *) Win32/64 targets are linked with Winsock2.
4436 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
4437 to external functions. This can be used to increase CRL handling
4438 efficiency especially when CRLs are very large by (for example) storing
4439 the CRL revoked certificates in a database.
4442 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
4443 new CRLs added to a directory can be used. New command line option
4444 -verify_return_error to s_client and s_server. This causes real errors
4445 to be returned by the verify callback instead of carrying on no matter
4446 what. This reflects the way a "real world" verify callback would behave.
4449 *) GOST engine, supporting several GOST algorithms and public key formats.
4450 Kindly donated by Cryptocom.
4453 *) Partial support for Issuing Distribution Point CRL extension. CRLs
4454 partitioned by DP are handled but no indirect CRL or reason partitioning
4455 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
4456 selected via a scoring technique which handles IDP and AKID in CRLs.
4459 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
4460 will ultimately be used for all verify operations: this will remove the
4461 X509_STORE dependency on certificate verification and allow alternative
4462 lookup methods. X509_STORE based implementations of these two callbacks.
4465 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
4466 Modify get_crl() to find a valid (unexpired) CRL if possible.
4469 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
4470 this would be called X509_CRL_cmp() but that name is already used by
4471 a function that just compares CRL issuer names. Cache several CRL
4472 extensions in X509_CRL structure and cache CRLDP in X509.
4475 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
4476 this maps equivalent X509_NAME structures into a consistent structure.
4477 Name comparison can then be performed rapidly using memcmp().
4480 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
4484 *) Allow digests to supply their own micalg string for S/MIME type using
4485 the ctrl EVP_MD_CTRL_MICALG.
4488 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
4489 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
4490 ctrl. It can then customise the structure before and/or after signing
4494 *) New function OBJ_add_sigid() to allow application defined signature OIDs
4495 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
4496 to free up any added signature OIDs.
4499 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
4500 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
4501 digest and cipher tables. New options added to openssl utility:
4502 list-message-digest-algorithms and list-cipher-algorithms.
4505 *) Change the array representation of binary polynomials: the list
4506 of degrees of non-zero coefficients is now terminated with -1.
4507 Previously it was terminated with 0, which was also part of the
4508 value; thus, the array representation was not applicable to
4509 polynomials where t^0 has coefficient zero. This change makes
4510 the array representation useful in a more general context.
4513 *) Various modifications and fixes to SSL/TLS cipher string
4514 handling. For ECC, the code now distinguishes between fixed ECDH
4515 with RSA certificates on the one hand and with ECDSA certificates
4516 on the other hand, since these are separate ciphersuites. The
4517 unused code for Fortezza ciphersuites has been removed.
4519 For consistency with EDH, ephemeral ECDH is now called "EECDH"
4520 (not "ECDHE"). For consistency with the code for DH
4521 certificates, use of ECDH certificates is now considered ECDH
4522 authentication, not RSA or ECDSA authentication (the latter is
4523 merely the CA's signing algorithm and not actively used in the
4526 The temporary ciphersuite alias "ECCdraft" is no longer
4527 available, and ECC ciphersuites are no longer excluded from "ALL"
4528 and "DEFAULT". The following aliases now exist for RFC 4492
4529 ciphersuites, most of these by analogy with the DH case:
4531 kECDHr - ECDH cert, signed with RSA
4532 kECDHe - ECDH cert, signed with ECDSA
4533 kECDH - ECDH cert (signed with either RSA or ECDSA)
4534 kEECDH - ephemeral ECDH
4535 ECDH - ECDH cert or ephemeral ECDH
4541 AECDH - anonymous ECDH
4542 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
4546 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
4547 Use correct micalg parameters depending on digest(s) in signed message.
4550 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
4551 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
4554 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
4555 an engine to register a method. Add ENGINE lookups for methods and
4556 functional reference processing.
4559 *) New functions EVP_Digest{Sign,Verify)*. These are enhanced versions of
4560 EVP_{Sign,Verify}* which allow an application to customise the signature
4564 *) New -resign option to smime utility. This adds one or more signers
4565 to an existing PKCS#7 signedData structure. Also -md option to use an
4566 alternative message digest algorithm for signing.
4569 *) Tidy up PKCS#7 routines and add new functions to make it easier to
4570 create PKCS7 structures containing multiple signers. Update smime
4571 application to support multiple signers.
4574 *) New -macalg option to pkcs12 utility to allow setting of an alternative
4578 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
4579 Reorganize PBE internals to lookup from a static table using NIDs,
4580 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
4581 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
4582 PRF which will be automatically used with PBES2.
4585 *) Replace the algorithm specific calls to generate keys in "req" with the
4589 *) Update PKCS#7 enveloped data routines to use new API. This is now
4590 supported by any public key method supporting the encrypt operation. A
4591 ctrl is added to allow the public key algorithm to examine or modify
4592 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
4596 *) Add a ctrl to asn1 method to allow a public key algorithm to express
4597 a default digest type to use. In most cases this will be SHA1 but some
4598 algorithms (such as GOST) need to specify an alternative digest. The
4599 return value indicates how strong the preference is 1 means optional and
4600 2 is mandatory (that is it is the only supported type). Modify
4601 ASN1_item_sign() to accept a NULL digest argument to indicate it should
4602 use the default md. Update openssl utilities to use the default digest
4603 type for signing if it is not explicitly indicated.
4606 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
4607 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
4608 signing method from the key type. This effectively removes the link
4609 between digests and public key types.
4612 *) Add an OID cross reference table and utility functions. Its purpose is to
4613 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
4614 rsaEncryption. This will allow some of the algorithm specific hackery
4615 needed to use the correct OID to be removed.
4618 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
4619 structures for PKCS7_sign(). They are now set up by the relevant public
4623 *) Add provisional EC pkey method with support for ECDSA and ECDH.
4626 *) Add support for key derivation (agreement) in the API, DH method and
4630 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
4631 public and private key formats. As a side effect these add additional
4632 command line functionality not previously available: DSA signatures can be
4633 generated and verified using pkeyutl and DH key support and generation in
4638 [Oliver Tappe <zooey@hirschkaefer.de>]
4640 *) New make target "install_html_docs" installs HTML renditions of the
4642 [Oliver Tappe <zooey@hirschkaefer.de>]
4644 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
4645 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
4646 support key and parameter generation and add initial key generation
4647 functionality for RSA.
4650 *) Add functions for main EVP_PKEY_method operations. The undocumented
4651 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
4652 EVP_PKEY_{encrypt,decrypt}_old.
4655 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
4656 key API, doesn't do much yet.
4659 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
4660 public key algorithms. New option to openssl utility:
4661 "list-public-key-algorithms" to print out info.
4664 *) Implement the Supported Elliptic Curves Extension for
4665 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
4668 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
4669 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
4672 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
4673 utilities such as rsa, dsa, dsaparam etc except they process any key
4677 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
4678 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
4679 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
4683 *) Initial support for pluggable public key ASN1.
4684 De-spaghettify the public key ASN1 handling. Move public and private
4685 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
4686 algorithm specific handling to a single module within the relevant
4687 algorithm directory. Add functions to allow (near) opaque processing
4688 of public and private key structures.
4691 *) Implement the Supported Point Formats Extension for
4692 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
4695 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
4696 for the psk identity [hint] and the psk callback functions to the
4697 SSL_SESSION, SSL and SSL_CTX structure.
4700 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
4704 SSL_CTX_use_psk_identity_hint
4705 SSL_get_psk_identity_hint
4706 SSL_get_psk_identity
4707 SSL_use_psk_identity_hint
4709 [Mika Kousa and Pasi Eronen of Nokia Corporation]
4711 *) Add RFC 3161 compliant time stamp request creation, response generation
4712 and response verification functionality.
4713 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
4715 *) Add initial support for TLS extensions, specifically for the server_name
4716 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
4717 have new members for a host name. The SSL data structure has an
4718 additional member SSL_CTX *initial_ctx so that new sessions can be
4719 stored in that context to allow for session resumption, even after the
4720 SSL has been switched to a new SSL_CTX in reaction to a client's
4721 server_name extension.
4723 New functions (subject to change):
4725 SSL_get_servername()
4726 SSL_get_servername_type()
4729 New CTRL codes and macros (subject to change):
4731 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
4732 - SSL_CTX_set_tlsext_servername_callback()
4733 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
4734 - SSL_CTX_set_tlsext_servername_arg()
4735 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
4737 openssl s_client has a new '-servername ...' option.
4739 openssl s_server has new options '-servername_host ...', '-cert2 ...',
4740 '-key2 ...', '-servername_fatal' (subject to change). This allows
4741 testing the HostName extension for a specific single host name ('-cert'
4742 and '-key' remain fallbacks for handshakes without HostName
4743 negotiation). If the unrecognized_name alert has to be sent, this by
4744 default is a warning; it becomes fatal with the '-servername_fatal'
4747 [Peter Sylvester, Remy Allais, Christophe Renou]
4749 *) Whirlpool hash implementation is added.
4752 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
4753 bn(64,32). Because of instruction set limitations it doesn't have
4754 any negative impact on performance. This was done mostly in order
4755 to make it possible to share assembler modules, such as bn_mul_mont
4756 implementations, between 32- and 64-bit builds without hassle.
4759 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
4760 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
4764 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
4765 dedicated Montgomery multiplication procedure, is introduced.
4766 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
4767 "64-bit" performance on certain 32-bit targets.
4770 *) New option SSL_OP_NO_COMP to disable use of compression selectively
4771 in SSL structures. New SSL ctrl to set maximum send fragment size.
4772 Save memory by setting the I/O buffer sizes dynamically instead of
4773 using the maximum available value.
4776 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
4777 in addition to the text details.
4780 *) Very, very preliminary EXPERIMENTAL support for printing of general
4781 ASN1 structures. This currently produces rather ugly output and doesn't
4782 handle several customised structures at all.
4785 *) Integrated support for PVK file format and some related formats such
4786 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
4787 these in the 'rsa' and 'dsa' utilities.
4790 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
4793 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
4794 place for the (very old) "NETSCAPE" format certificates which are now
4795 handled using new ASN1 code equivalents.
4798 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
4799 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
4800 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
4803 *) Modify CRL distribution points extension code to print out previously
4804 unsupported fields. Enhance extension setting code to allow setting of
4808 *) Add print and set support for Issuing Distribution Point CRL extension.
4811 *) Change 'Configure' script to enable Camellia by default.
4814 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
4816 *) When rejecting SSL/TLS records due to an incorrect version number, never
4817 update s->server with a new major version number. As of
4818 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
4819 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
4820 the previous behavior could result in a read attempt at NULL when
4821 receiving specific incorrect SSL/TLS records once record payload
4822 protection is active. (CVE-2010-0740)
4823 [Bodo Moeller, Adam Langley <agl@chromium.org>]
4825 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
4826 could be crashed if the relevant tables were not present (e.g. chrooted).
4827 [Tomas Hoger <thoger@redhat.com>]
4829 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
4831 *) Always check bn_wexpand() return values for failure. (CVE-2009-3245)
4832 [Martin Olsson, Neel Mehta]
4834 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
4835 accommodate for stack sorting, always a write lock!).
4838 *) On some versions of WIN32 Heap32Next is very slow. This can cause
4839 excessive delays in the RAND_poll(): over a minute. As a workaround
4840 include a time check in the inner Heap32Next loop too.
4843 *) The code that handled flushing of data in SSL/TLS originally used the
4844 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
4845 the problem outlined in PR#1949. The fix suggested there however can
4846 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
4847 of Apache). So instead simplify the code to flush unconditionally.
4848 This should be fine since flushing with no data to flush is a no op.
4851 *) Handle TLS versions 2.0 and later properly and correctly use the
4852 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
4853 off ancient servers have a habit of sticking around for a while...
4856 *) Modify compression code so it frees up structures without using the
4857 ex_data callbacks. This works around a problem where some applications
4858 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
4859 restarting) then use compression (e.g. SSL with compression) later.
4860 This results in significant per-connection memory leaks and
4861 has caused some security issues including CVE-2008-1678 and
4865 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
4866 change when encrypting or decrypting.
4869 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
4870 connect and renegotiate with servers which do not support RI.
4871 Until RI is more widely deployed this option is enabled by default.
4874 *) Add "missing" ssl ctrls to clear options and mode.
4877 *) If client attempts to renegotiate and doesn't support RI respond with
4878 a no_renegotiation alert as required by RFC5746. Some renegotiating
4879 TLS clients will continue a connection gracefully when they receive
4880 the alert. Unfortunately OpenSSL mishandled this alert and would hang
4881 waiting for a server hello which it will never receive. Now we treat a
4882 received no_renegotiation alert as a fatal error. This is because
4883 applications requesting a renegotiation might well expect it to succeed
4884 and would have no code in place to handle the server denying it so the
4885 only safe thing to do is to terminate the connection.
4888 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
4889 peer supports secure renegotiation and 0 otherwise. Print out peer
4890 renegotiation support in s_client/s_server.
4893 *) Replace the highly broken and deprecated SPKAC certification method with
4894 the updated NID creation version. This should correctly handle UTF8.
4897 *) Implement RFC5746. Re-enable renegotiation but require the extension
4898 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
4899 turns out to be a bad idea. It has been replaced by
4900 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
4901 SSL_CTX_set_options(). This is really not recommended unless you
4902 know what you are doing.
4903 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
4905 *) Fixes to stateless session resumption handling. Use initial_ctx when
4906 issuing and attempting to decrypt tickets in case it has changed during
4907 servername handling. Use a non-zero length session ID when attempting
4908 stateless session resumption: this makes it possible to determine if
4909 a resumption has occurred immediately after receiving server hello
4910 (several places in OpenSSL subtly assume this) instead of later in
4914 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
4915 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
4916 fixes for a few places where the return code is not checked
4918 [Julia Lawall <julia@diku.dk>]
4920 *) Add --strict-warnings option to Configure script to include devteam
4921 warnings in other configurations.
4924 *) Add support for --libdir option and LIBDIR variable in makefiles. This
4925 makes it possible to install openssl libraries in locations which
4926 have names other than "lib", for example "/usr/lib64" which some
4928 [Steve Henson, based on patch from Jeremy Utley]
4930 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
4931 X690 8.9.12 and can produce some misleading textual output of OIDs.
4932 [Steve Henson, reported by Dan Kaminsky]
4934 *) Delete MD2 from algorithm tables. This follows the recommendation in
4935 several standards that it is not used in new applications due to
4936 several cryptographic weaknesses. For binary compatibility reasons
4937 the MD2 API is still compiled in by default.
4940 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
4944 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
4945 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
4947 [Guenter <lists@gknw.net>]
4949 *) Fix the server certificate chain building code to use X509_verify_cert(),
4950 it used to have an ad-hoc builder which was unable to cope with anything
4951 other than a simple chain.
4952 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
4954 *) Don't check self signed certificate signatures in X509_verify_cert()
4955 by default (a flag can override this): it just wastes time without
4956 adding any security. As a useful side effect self signed root CAs
4957 with non-FIPS digests are now usable in FIPS mode.
4960 *) In dtls1_process_out_of_seq_message() the check if the current message
4961 is already buffered was missing. For every new message was memory
4962 allocated, allowing an attacker to perform an denial of service attack
4963 with sending out of seq handshake messages until there is no memory
4964 left. Additionally every future message was buffered, even if the
4965 sequence number made no sense and would be part of another handshake.
4966 So only messages with sequence numbers less than 10 in advance will be
4967 buffered. (CVE-2009-1378)
4968 [Robin Seggelmann, discovered by Daniel Mentz]
4970 *) Records are buffered if they arrive with a future epoch to be
4971 processed after finishing the corresponding handshake. There is
4972 currently no limitation to this buffer allowing an attacker to perform
4973 a DOS attack with sending records with future epochs until there is no
4974 memory left. This patch adds the pqueue_size() function to determine
4975 the size of a buffer and limits the record buffer to 100 entries.
4977 [Robin Seggelmann, discovered by Daniel Mentz]
4979 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
4980 parent structure is freed. (CVE-2009-1379)
4983 *) Handle non-blocking I/O properly in SSL_shutdown() call.
4984 [Darryl Miles <darryl-mailinglists@netbauds.net>]
4987 [Ilya O. <vrghost@gmail.com>]
4989 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
4991 *) Disable renegotiation completely - this fixes a severe security
4992 problem (CVE-2009-3555) at the cost of breaking all
4993 renegotiation. Renegotiation can be re-enabled by setting
4994 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
4995 run-time. This is really not recommended unless you know what
4999 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
5001 *) Don't set val to NULL when freeing up structures, it is freed up by
5002 underlying code. If sizeof(void *) > sizeof(long) this can result in
5003 zeroing past the valid field. (CVE-2009-0789)
5004 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
5006 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
5007 checked correctly. This would allow some invalid signed attributes to
5008 appear to verify correctly. (CVE-2009-0591)
5009 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5011 *) Reject UniversalString and BMPString types with invalid lengths. This
5012 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
5013 a legal length. (CVE-2009-0590)
5016 *) Set S/MIME signing as the default purpose rather than setting it
5017 unconditionally. This allows applications to override it at the store
5021 *) Permit restricted recursion of ASN1 strings. This is needed in practice
5022 to handle some structures.
5025 *) Improve efficiency of mem_gets: don't search whole buffer each time
5027 [Jeremy Shapiro <jnshapir@us.ibm.com>]
5029 *) New -hex option for openssl rand.
5032 *) Print out UTF8String and NumericString when parsing ASN1.
5035 *) Support NumericString type for name components.
5038 *) Allow CC in the environment to override the automatically chosen
5039 compiler. Note that nothing is done to ensure flags work with the
5043 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
5045 *) Properly check EVP_VerifyFinal() and similar return values
5047 [Ben Laurie, Bodo Moeller, Google Security Team]
5049 *) Enable TLS extensions by default.
5052 *) Allow the CHIL engine to be loaded, whether the application is
5053 multithreaded or not. (This does not release the developer from the
5054 obligation to set up the dynamic locking callbacks.)
5055 [Sander Temme <sander@temme.net>]
5057 *) Use correct exit code if there is an error in dgst command.
5058 [Steve Henson; problem pointed out by Roland Dirlewanger]
5060 *) Tweak Configure so that you need to say "experimental-jpake" to enable
5061 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
5064 *) Add experimental JPAKE support, including demo authentication in
5065 s_client and s_server.
5068 *) Set the comparison function in v3_addr_canonize().
5069 [Rob Austein <sra@hactrn.net>]
5071 *) Add support for XMPP STARTTLS in s_client.
5072 [Philip Paeps <philip@freebsd.org>]
5074 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
5075 to ensure that even with this option, only ciphersuites in the
5076 server's preference list will be accepted. (Note that the option
5077 applies only when resuming a session, so the earlier behavior was
5078 just about the algorithm choice for symmetric cryptography.)
5081 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
5083 *) Fix NULL pointer dereference if a DTLS server received
5084 ChangeCipherSpec as first record (CVE-2009-1386).
5087 *) Fix a state transition in s3_srvr.c and d1_srvr.c
5088 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
5091 *) The fix in 0.9.8c that supposedly got rid of unsafe
5092 double-checked locking was incomplete for RSA blinding,
5093 addressing just one layer of what turns out to have been
5094 doubly unsafe triple-checked locking.
5096 So now fix this for real by retiring the MONT_HELPER macro
5097 in crypto/rsa/rsa_eay.c.
5099 [Bodo Moeller; problem pointed out by Marius Schilder]
5101 *) Various precautionary measures:
5103 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
5105 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
5106 (NB: This would require knowledge of the secret session ticket key
5107 to exploit, in which case you'd be SOL either way.)
5109 - Change bn_nist.c so that it will properly handle input BIGNUMs
5110 outside the expected range.
5112 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
5115 [Neel Mehta, Bodo Moeller]
5117 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
5118 the load fails. Useful for distros.
5119 [Ben Laurie and the FreeBSD team]
5121 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
5124 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
5127 *) Expand ENGINE to support engine supplied SSL client certificate functions.
5129 This work was sponsored by Logica.
5132 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
5133 keystores. Support for SSL/TLS client authentication too.
5134 Not compiled unless enable-capieng specified to Configure.
5136 This work was sponsored by Logica.
5139 *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using
5140 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
5141 attribute creation routines such as certificate requests and PKCS#12
5145 Changes between 0.9.8g and 0.9.8h [28 May 2008]
5147 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
5148 handshake which could lead to a client crash as found using the
5149 Codenomicon TLS test suite (CVE-2008-1672)
5150 [Steve Henson, Mark Cox]
5152 *) Fix double free in TLS server name extensions which could lead to
5153 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
5156 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
5158 Clear the error queue to ensure that error entries left from
5159 older function calls do not interfere with the correct operation.
5160 [Lutz Jaenicke, Erik de Castro Lopo]
5162 *) Remove root CA certificates of commercial CAs:
5164 The OpenSSL project does not recommend any specific CA and does not
5165 have any policy with respect to including or excluding any CA.
5166 Therefore it does not make any sense to ship an arbitrary selection
5167 of root CA certificates with the OpenSSL software.
5170 *) RSA OAEP patches to fix two separate invalid memory reads.
5171 The first one involves inputs when 'lzero' is greater than
5172 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
5173 before the beginning of from). The second one involves inputs where
5174 the 'db' section contains nothing but zeroes (there is a one-byte
5175 invalid read after the end of 'db').
5176 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5178 *) Partial backport from 0.9.9-dev:
5180 Introduce bn_mul_mont (dedicated Montgomery multiplication
5181 procedure) as a candidate for BIGNUM assembler implementation.
5182 While 0.9.9-dev uses assembler for various architectures, only
5183 x86_64 is available by default here in the 0.9.8 branch, and
5184 32-bit x86 is available through a compile-time setting.
5186 To try the 32-bit x86 assembler implementation, use Configure
5187 option "enable-montasm" (which exists only for this backport).
5189 As "enable-montasm" for 32-bit x86 disclaims code stability
5190 anyway, in this constellation we activate additional code
5191 backported from 0.9.9-dev for further performance improvements,
5192 namely BN_from_montgomery_word. (To enable this otherwise,
5193 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
5195 [Andy Polyakov (backport partially by Bodo Moeller)]
5197 *) Add TLS session ticket callback. This allows an application to set
5198 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
5199 values. This is useful for key rollover for example where several key
5200 sets may exist with different names.
5203 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
5204 This was broken until now in 0.9.8 releases, such that the only way
5205 a registered ENGINE could be used (assuming it initialises
5206 successfully on the host) was to explicitly set it as the default
5207 for the relevant algorithms. This is in contradiction with 0.9.7
5208 behaviour and the documentation. With this fix, when an ENGINE is
5209 registered into a given algorithm's table of implementations, the
5210 'uptodate' flag is reset so that auto-discovery will be used next
5211 time a new context for that algorithm attempts to select an
5213 [Ian Lister (tweaked by Geoff Thorpe)]
5215 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
5216 implementation in the following ways:
5218 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
5221 Lack of BER streaming support means one pass streaming processing is
5222 only supported if data is detached: setting the streaming flag is
5223 ignored for embedded content.
5225 CMS support is disabled by default and must be explicitly enabled
5226 with the enable-cms configuration option.
5229 *) Update the GMP engine glue to do direct copies between BIGNUM and
5230 mpz_t when openssl and GMP use the same limb size. Otherwise the
5231 existing "conversion via a text string export" trick is still used.
5232 [Paul Sheer <paulsheer@gmail.com>]
5234 *) Zlib compression BIO. This is a filter BIO which compressed and
5235 uncompresses any data passed through it.
5238 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
5239 RFC3394 compatible AES key wrapping.
5242 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
5243 sets string data without copying. X509_ALGOR_set0() and
5244 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
5245 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
5246 from an X509_ATTRIBUTE structure optionally checking it occurs only
5247 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
5251 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
5252 to get the expected BN_FLG_CONSTTIME behavior.
5253 [Bodo Moeller (Google)]
5257 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
5258 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
5259 - added some more tests to do_tests.pl
5260 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
5261 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
5262 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
5263 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
5264 - various changes to netware.pl to enable gcc-cross builds on Win32
5266 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
5267 - various changes to fix missing prototype warnings
5268 - fixed x86nasm.pl to create correct asm files for NASM COFF output
5269 - added AES, WHIRLPOOL and CPUID assembler code to build files
5270 - added missing AES assembler make rules to mk1mf.pl
5271 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
5272 [Guenter Knauf <eflash@gmx.net>]
5274 *) Implement certificate status request TLS extension defined in RFC3546.
5275 A client can set the appropriate parameters and receive the encoded
5276 OCSP response via a callback. A server can query the supplied parameters
5277 and set the encoded OCSP response in the callback. Add simplified examples
5278 to s_client and s_server.
5281 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
5283 *) Fix various bugs:
5284 + Binary incompatibility of ssl_ctx_st structure
5285 + DTLS interoperation with non-compliant servers
5286 + Don't call get_session_cb() without proposed session
5287 + Fix ia64 assembler code
5288 [Andy Polyakov, Steve Henson]
5290 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
5292 *) DTLS Handshake overhaul. There were longstanding issues with
5293 OpenSSL DTLS implementation, which were making it impossible for
5294 RFC 4347 compliant client to communicate with OpenSSL server.
5295 Unfortunately just fixing these incompatibilities would "cut off"
5296 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
5297 server keeps tolerating non RFC compliant syntax. The opposite is
5298 not true, 0.9.8f client can not communicate with earlier server.
5299 This update even addresses CVE-2007-4995.
5302 *) Changes to avoid need for function casts in OpenSSL: some compilers
5303 (gcc 4.2 and later) reject their use.
5304 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
5307 *) Add RFC4507 support to OpenSSL. This includes the corrections in
5308 RFC4507bis. The encrypted ticket format is an encrypted encoded
5309 SSL_SESSION structure, that way new session features are automatically
5312 If a client application caches session in an SSL_SESSION structure
5313 support is transparent because tickets are now stored in the encoded
5316 The SSL_CTX structure automatically generates keys for ticket
5317 protection in servers so again support should be possible
5318 with no application modification.
5320 If a client or server wishes to disable RFC4507 support then the option
5321 SSL_OP_NO_TICKET can be set.
5323 Add a TLS extension debugging callback to allow the contents of any client
5324 or server extensions to be examined.
5326 This work was sponsored by Google.
5329 *) Add initial support for TLS extensions, specifically for the server_name
5330 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5331 have new members for a host name. The SSL data structure has an
5332 additional member SSL_CTX *initial_ctx so that new sessions can be
5333 stored in that context to allow for session resumption, even after the
5334 SSL has been switched to a new SSL_CTX in reaction to a client's
5335 server_name extension.
5337 New functions (subject to change):
5339 SSL_get_servername()
5340 SSL_get_servername_type()
5343 New CTRL codes and macros (subject to change):
5345 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5346 - SSL_CTX_set_tlsext_servername_callback()
5347 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5348 - SSL_CTX_set_tlsext_servername_arg()
5349 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5351 openssl s_client has a new '-servername ...' option.
5353 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5354 '-key2 ...', '-servername_fatal' (subject to change). This allows
5355 testing the HostName extension for a specific single host name ('-cert'
5356 and '-key' remain fallbacks for handshakes without HostName
5357 negotiation). If the unrecognized_name alert has to be sent, this by
5358 default is a warning; it becomes fatal with the '-servername_fatal'
5361 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
5363 *) Add AES and SSE2 assembly language support to VC++ build.
5366 *) Mitigate attack on final subtraction in Montgomery reduction.
5369 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
5370 (which previously caused an internal error).
5373 *) Squeeze another 10% out of IGE mode when in != out.
5376 *) AES IGE mode speedup.
5377 [Dean Gaudet (Google)]
5379 *) Add the Korean symmetric 128-bit cipher SEED (see
5380 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
5381 add SEED ciphersuites from RFC 4162:
5383 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
5384 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
5385 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
5386 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
5388 To minimize changes between patchlevels in the OpenSSL 0.9.8
5389 series, SEED remains excluded from compilation unless OpenSSL
5390 is configured with 'enable-seed'.
5391 [KISA, Bodo Moeller]
5393 *) Mitigate branch prediction attacks, which can be practical if a
5394 single processor is shared, allowing a spy process to extract
5395 information. For detailed background information, see
5396 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
5397 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
5398 and Necessary Software Countermeasures"). The core of the change
5399 are new versions BN_div_no_branch() and
5400 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
5401 respectively, which are slower, but avoid the security-relevant
5402 conditional branches. These are automatically called by BN_div()
5403 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
5404 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
5405 remove a conditional branch.
5407 BN_FLG_CONSTTIME is the new name for the previous
5408 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
5409 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
5410 in the exponent causes BN_mod_exp_mont() to use the alternative
5411 implementation in BN_mod_exp_mont_consttime().) The old name
5412 remains as a deprecated alias.
5414 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
5415 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
5416 constant-time implementations for more than just exponentiation.
5417 Here too the old name is kept as a deprecated alias.
5419 BN_BLINDING_new() will now use BN_dup() for the modulus so that
5420 the BN_BLINDING structure gets an independent copy of the
5421 modulus. This means that the previous "BIGNUM *m" argument to
5422 BN_BLINDING_new() and to BN_BLINDING_create_param() now
5423 essentially becomes "const BIGNUM *m", although we can't actually
5424 change this in the header file before 0.9.9. It allows
5425 RSA_setup_blinding() to use BN_with_flags() on the modulus to
5426 enable BN_FLG_CONSTTIME.
5428 [Matthew D Wood (Intel Corp)]
5430 *) In the SSL/TLS server implementation, be strict about session ID
5431 context matching (which matters if an application uses a single
5432 external cache for different purposes). Previously,
5433 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
5434 set. This did ensure strict client verification, but meant that,
5435 with applications using a single external cache for quite
5436 different requirements, clients could circumvent ciphersuite
5437 restrictions for a given session ID context by starting a session
5438 in a different context.
5441 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
5442 a ciphersuite string such as "DEFAULT:RSA" cannot enable
5443 authentication-only ciphersuites.
5446 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
5447 not complete and could lead to a possible single byte overflow
5448 (CVE-2007-5135) [Ben Laurie]
5450 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
5452 *) Since AES128 and AES256 (and similarly Camellia128 and
5453 Camellia256) share a single mask bit in the logic of
5454 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
5455 kludge to work properly if AES128 is available and AES256 isn't
5456 (or if Camellia128 is available and Camellia256 isn't).
5459 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
5460 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
5461 When a point or a seed is encoded in a BIT STRING, we need to
5462 prevent the removal of trailing zero bits to get the proper DER
5463 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
5464 of a NamedBitList, for which trailing 0 bits need to be removed.)
5467 *) Have SSL/TLS server implementation tolerate "mismatched" record
5468 protocol version while receiving ClientHello even if the
5469 ClientHello is fragmented. (The server can't insist on the
5470 particular protocol version it has chosen before the ServerHello
5471 message has informed the client about his choice.)
5474 *) Add RFC 3779 support.
5475 [Rob Austein for ARIN, Ben Laurie]
5477 *) Load error codes if they are not already present instead of using a
5478 static variable. This allows them to be cleanly unloaded and reloaded.
5479 Improve header file function name parsing.
5482 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
5483 or CAPABILITY handshake as required by RFCs.
5486 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
5488 *) Introduce limits to prevent malicious keys being able to
5489 cause a denial of service. (CVE-2006-2940)
5490 [Steve Henson, Bodo Moeller]
5492 *) Fix ASN.1 parsing of certain invalid structures that can result
5493 in a denial of service. (CVE-2006-2937) [Steve Henson]
5495 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
5496 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
5498 *) Fix SSL client code which could crash if connecting to a
5499 malicious SSLv2 server. (CVE-2006-4343)
5500 [Tavis Ormandy and Will Drewry, Google Security Team]
5502 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
5503 match only those. Before that, "AES256-SHA" would be interpreted
5504 as a pattern and match "AES128-SHA" too (since AES128-SHA got
5505 the same strength classification in 0.9.7h) as we currently only
5506 have a single AES bit in the ciphersuite description bitmap.
5507 That change, however, also applied to ciphersuite strings such as
5508 "RC4-MD5" that intentionally matched multiple ciphersuites --
5509 namely, SSL 2.0 ciphersuites in addition to the more common ones
5510 from SSL 3.0/TLS 1.0.
5512 So we change the selection algorithm again: Naming an explicit
5513 ciphersuite selects this one ciphersuite, and any other similar
5514 ciphersuite (same bitmap) from *other* protocol versions.
5515 Thus, "RC4-MD5" again will properly select both the SSL 2.0
5516 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
5518 Since SSL 2.0 does not have any ciphersuites for which the
5519 128/256 bit distinction would be relevant, this works for now.
5520 The proper fix will be to use different bits for AES128 and
5521 AES256, which would have avoided the problems from the beginning;
5522 however, bits are scarce, so we can only do this in a new release
5523 (not just a patchlevel) when we can change the SSL_CIPHER
5524 definition to split the single 'unsigned long mask' bitmap into
5525 multiple values to extend the available space.
5529 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
5531 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
5532 (CVE-2006-4339) [Ben Laurie and Google Security Team]
5534 *) Add AES IGE and biIGE modes.
5537 *) Change the Unix randomness entropy gathering to use poll() when
5538 possible instead of select(), since the latter has some
5539 undesirable limitations.
5540 [Darryl Miles via Richard Levitte and Bodo Moeller]
5542 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
5543 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
5544 cannot be implicitly activated as part of, e.g., the "AES" alias.
5545 However, please upgrade to OpenSSL 0.9.9[-dev] for
5546 non-experimental use of the ECC ciphersuites to get TLS extension
5547 support, which is required for curve and point format negotiation
5548 to avoid potential handshake problems.
5551 *) Disable rogue ciphersuites:
5553 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
5554 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
5555 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
5557 The latter two were purportedly from
5558 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
5561 Also deactivate the remaining ciphersuites from
5562 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
5563 unofficial, and the ID has long expired.
5566 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
5567 dual-core machines) and other potential thread-safety issues.
5570 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
5571 versions), which is now available for royalty-free use
5572 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
5573 Also, add Camellia TLS ciphersuites from RFC 4132.
5575 To minimize changes between patchlevels in the OpenSSL 0.9.8
5576 series, Camellia remains excluded from compilation unless OpenSSL
5577 is configured with 'enable-camellia'.
5580 *) Disable the padding bug check when compression is in use. The padding
5581 bug check assumes the first packet is of even length, this is not
5582 necessarily true if compression is enabled and can result in false
5583 positives causing handshake failure. The actual bug test is ancient
5584 code so it is hoped that implementations will either have fixed it by
5585 now or any which still have the bug do not support compression.
5588 Changes between 0.9.8a and 0.9.8b [04 May 2006]
5590 *) When applying a cipher rule check to see if string match is an explicit
5591 cipher suite and only match that one cipher suite if it is.
5594 *) Link in manifests for VC++ if needed.
5595 [Austin Ziegler <halostatue@gmail.com>]
5597 *) Update support for ECC-based TLS ciphersuites according to
5598 draft-ietf-tls-ecc-12.txt with proposed changes (but without
5599 TLS extensions, which are supported starting with the 0.9.9
5600 branch, not in the OpenSSL 0.9.8 branch).
5603 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
5604 opaque EVP_CIPHER_CTX handling.
5607 *) Fixes and enhancements to zlib compression code. We now only use
5608 "zlib1.dll" and use the default __cdecl calling convention on Win32
5609 to conform with the standards mentioned here:
5610 http://www.zlib.net/DLL_FAQ.txt
5611 Static zlib linking now works on Windows and the new --with-zlib-include
5612 --with-zlib-lib options to Configure can be used to supply the location
5613 of the headers and library. Gracefully handle case where zlib library
5617 *) Several fixes and enhancements to the OID generation code. The old code
5618 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
5619 handle numbers larger than ULONG_MAX, truncated printing and had a
5620 non standard OBJ_obj2txt() behaviour.
5623 *) Add support for building of engines under engine/ as shared libraries
5624 under VC++ build system.
5627 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
5628 Hopefully, we will not see any false combination of paths any more.
5631 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
5633 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
5634 (part of SSL_OP_ALL). This option used to disable the
5635 countermeasure against man-in-the-middle protocol-version
5636 rollback in the SSL 2.0 server implementation, which is a bad
5637 idea. (CVE-2005-2969)
5639 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
5640 for Information Security, National Institute of Advanced Industrial
5641 Science and Technology [AIST], Japan)]
5643 *) Add two function to clear and return the verify parameter flags.
5646 *) Keep cipherlists sorted in the source instead of sorting them at
5647 runtime, thus removing the need for a lock.
5650 *) Avoid some small subgroup attacks in Diffie-Hellman.
5651 [Nick Mathewson and Ben Laurie]
5653 *) Add functions for well-known primes.
5656 *) Extended Windows CE support.
5657 [Satoshi Nakamura and Andy Polyakov]
5659 *) Initialize SSL_METHOD structures at compile time instead of during
5660 runtime, thus removing the need for a lock.
5663 *) Make PKCS7_decrypt() work even if no certificate is supplied by
5664 attempting to decrypt each encrypted key in turn. Add support to
5668 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
5670 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
5673 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
5676 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
5677 key into the same file any more.
5680 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
5683 *) Add -utf8 command line and config file option to 'ca'.
5684 [Stefan <stf@udoma.org]
5686 *) Removed the macro des_crypt(), as it seems to conflict with some
5687 libraries. Use DES_crypt().
5690 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
5691 involves renaming the source and generated shared-libs for
5692 both. The engines will accept the corrected or legacy ids
5693 ('ncipher' and '4758_cca' respectively) when binding. NB,
5694 this only applies when building 'shared'.
5695 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
5697 *) Add attribute functions to EVP_PKEY structure. Modify
5698 PKCS12_create() to recognize a CSP name attribute and
5699 use it. Make -CSP option work again in pkcs12 utility.
5702 *) Add new functionality to the bn blinding code:
5703 - automatic re-creation of the BN_BLINDING parameters after
5704 a fixed number of uses (currently 32)
5705 - add new function for parameter creation
5706 - introduce flags to control the update behaviour of the
5707 BN_BLINDING parameters
5708 - hide BN_BLINDING structure
5709 Add a second BN_BLINDING slot to the RSA structure to improve
5710 performance when a single RSA object is shared among several
5714 *) Add support for DTLS.
5715 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
5717 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
5718 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
5721 *) Remove buggy and incomplete DH cert support from
5722 ssl/ssl_rsa.c and ssl/s3_both.c
5725 *) Use SHA-1 instead of MD5 as the default digest algorithm for
5726 the apps/openssl applications.
5729 *) Compile clean with "-Wall -Wmissing-prototypes
5730 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
5731 DEBUG_SAFESTACK must also be set.
5734 *) Change ./Configure so that certain algorithms can be disabled by default.
5735 The new counterpiece to "no-xxx" is "enable-xxx".
5737 The patented RC5 and MDC2 algorithms will now be disabled unless
5738 "enable-rc5" and "enable-mdc2", respectively, are specified.
5740 (IDEA remains enabled despite being patented. This is because IDEA
5741 is frequently required for interoperability, and there is no license
5742 fee for non-commercial use. As before, "no-idea" can be used to
5743 avoid this algorithm.)
5747 *) Add processing of proxy certificates (see RFC 3820). This work was
5748 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
5749 EGEE (Enabling Grids for E-science in Europe).
5752 *) RC4 performance overhaul on modern architectures/implementations, such
5753 as Intel P4, IA-64 and AMD64.
5756 *) New utility extract-section.pl. This can be used specify an alternative
5757 section number in a pod file instead of having to treat each file as
5758 a separate case in Makefile. This can be done by adding two lines to the
5761 =for comment openssl_section:XXX
5763 The blank line is mandatory.
5767 *) New arguments -certform, -keyform and -pass for s_client and s_server
5768 to allow alternative format key and certificate files and passphrase
5772 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
5773 update associated structures and add various utility functions.
5775 Add new policy related verify parameters, include policy checking in
5776 standard verify code. Enhance 'smime' application with extra parameters
5777 to support policy checking and print out.
5780 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
5781 Nehemiah processors. These extensions support AES encryption in hardware
5782 as well as RNG (though RNG support is currently disabled).
5783 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
5785 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
5788 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
5789 [Andy Polyakov and a number of other people]
5791 *) Improved PowerPC platform support. Most notably BIGNUM assembler
5792 implementation contributed by IBM.
5793 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
5795 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
5796 exponent rather than 'unsigned long'. There is a corresponding change to
5797 the new 'rsa_keygen' element of the RSA_METHOD structure.
5798 [Jelte Jansen, Geoff Thorpe]
5800 *) Functionality for creating the initial serial number file is now
5801 moved from CA.pl to the 'ca' utility with a new option -create_serial.
5803 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
5804 number file to 1, which is bound to cause problems. To avoid
5805 the problems while respecting compatibility between different 0.9.7
5806 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
5807 CA.pl for serial number initialization. With the new release 0.9.8,
5808 we can fix the problem directly in the 'ca' utility.)
5811 *) Reduced header interdependencies by declaring more opaque objects in
5812 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
5813 give fewer recursive includes, which could break lazy source code - so
5814 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
5815 developers should define this symbol when building and using openssl to
5816 ensure they track the recommended behaviour, interfaces, [etc], but
5817 backwards-compatible behaviour prevails when this isn't defined.
5820 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
5823 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
5824 This will generate a random key of the appropriate length based on the
5825 cipher context. The EVP_CIPHER can provide its own random key generation
5826 routine to support keys of a specific form. This is used in the des and
5827 3des routines to generate a key of the correct parity. Update S/MIME
5828 code to use new functions and hence generate correct parity DES keys.
5829 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
5830 valid (weak or incorrect parity).
5833 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
5834 as looking them up. This is useful when the verified structure may contain
5835 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
5836 present unless the new PKCS7_NO_CRL flag is asserted.
5839 *) Extend ASN1 oid configuration module. It now additionally accepts the
5842 shortName = some long name, 1.2.3.4
5845 *) Reimplemented the BN_CTX implementation. There is now no more static
5846 limitation on the number of variables it can handle nor the depth of the
5847 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
5848 information can now expand as required, and rather than having a single
5849 static array of bignums, BN_CTX now uses a linked-list of such arrays
5850 allowing it to expand on demand whilst maintaining the usefulness of
5851 BN_CTX's "bundling".
5854 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
5855 to allow all RSA operations to function using a single BN_CTX.
5858 *) Preliminary support for certificate policy evaluation and checking. This
5859 is initially intended to pass the tests outlined in "Conformance Testing
5860 of Relying Party Client Certificate Path Processing Logic" v1.07.
5863 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
5864 remained unused and not that useful. A variety of other little bignum
5865 tweaks and fixes have also been made continuing on from the audit (see
5869 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
5870 associated ASN1, EVP and SSL functions and old ASN1 macros.
5873 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
5874 and this should never fail. So the return value from the use of
5875 BN_set_word() (which can fail due to needless expansion) is now deprecated;
5876 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
5879 *) BN_CTX_get() should return zero-valued bignums, providing the same
5880 initialised value as BN_new().
5881 [Geoff Thorpe, suggested by Ulf Möller]
5883 *) Support for inhibitAnyPolicy certificate extension.
5886 *) An audit of the BIGNUM code is underway, for which debugging code is
5887 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
5888 is considered valid when processing BIGNUMs, and causes execution to
5889 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
5890 further steps are taken to deliberately pollute unused data in BIGNUM
5891 structures to try and expose faulty code further on. For now, openssl will
5892 (in its default mode of operation) continue to tolerate the inconsistent
5893 forms that it has tolerated in the past, but authors and packagers should
5894 consider trying openssl and their own applications when compiled with
5895 these debugging symbols defined. It will help highlight potential bugs in
5896 their own code, and will improve the test coverage for OpenSSL itself. At
5897 some point, these tighter rules will become openssl's default to improve
5898 maintainability, though the assert()s and other overheads will remain only
5899 in debugging configurations. See bn.h for more details.
5900 [Geoff Thorpe, Nils Larsch, Ulf Möller]
5902 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
5903 that can only be obtained through BN_CTX_new() (which implicitly
5904 initialises it). The presence of this function only made it possible
5905 to overwrite an existing structure (and cause memory leaks).
5908 *) Because of the callback-based approach for implementing LHASH as a
5909 template type, lh_insert() adds opaque objects to hash-tables and
5910 lh_doall() or lh_doall_arg() are typically used with a destructor callback
5911 to clean up those corresponding objects before destroying the hash table
5912 (and losing the object pointers). So some over-zealous constifications in
5913 LHASH have been relaxed so that lh_insert() does not take (nor store) the
5914 objects as "const" and the lh_doall[_arg] callback wrappers are not
5915 prototyped to have "const" restrictions on the object pointers they are
5916 given (and so aren't required to cast them away any more).
5919 *) The tmdiff.h API was so ugly and minimal that our own timing utility
5920 (speed) prefers to use its own implementation. The two implementations
5921 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
5922 its object type properly exposed (MS_TM) instead of casting to/from "char
5923 *". This may still change yet if someone realises MS_TM and "ms_time_***"
5924 aren't necessarily the greatest nomenclatures - but this is what was used
5925 internally to the implementation so I've used that for now.
5928 *) Ensure that deprecated functions do not get compiled when
5929 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
5930 the self-tests were still using deprecated key-generation functions so
5931 these have been updated also.
5934 *) Reorganise PKCS#7 code to separate the digest location functionality
5935 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
5936 New function PKCS7_set_digest() to set the digest type for PKCS#7
5937 digestedData type. Add additional code to correctly generate the
5938 digestedData type and add support for this type in PKCS7 initialization
5942 *) New function PKCS7_set0_type_other() this initializes a PKCS7
5943 structure of type "other".
5946 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
5947 sure the loop does correctly stop and breaking ("division by zero")
5948 modulus operations are not performed. The (pre-generated) prime
5949 table crypto/bn/bn_prime.h was already correct, but it could not be
5950 re-generated on some platforms because of the "division by zero"
5951 situation in the script.
5952 [Ralf S. Engelschall]
5954 *) Update support for ECC-based TLS ciphersuites according to
5955 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
5956 SHA-1 now is only used for "small" curves (where the
5957 representation of a field element takes up to 24 bytes); for
5958 larger curves, the field element resulting from ECDH is directly
5959 used as premaster secret.
5960 [Douglas Stebila (Sun Microsystems Laboratories)]
5962 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
5963 curve secp160r1 to the tests.
5964 [Douglas Stebila (Sun Microsystems Laboratories)]
5966 *) Add the possibility to load symbols globally with DSO.
5967 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
5969 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
5970 control of the error stack.
5973 *) Add support for STORE in ENGINE.
5976 *) Add the STORE type. The intention is to provide a common interface
5977 to certificate and key stores, be they simple file-based stores, or
5978 HSM-type store, or LDAP stores, or...
5979 NOTE: The code is currently UNTESTED and isn't really used anywhere.
5982 *) Add a generic structure called OPENSSL_ITEM. This can be used to
5983 pass a list of arguments to any function as well as provide a way
5984 for a function to pass data back to the caller.
5987 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
5988 works like BUF_strdup() but can be used to duplicate a portion of
5989 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
5993 *) Add the function sk_find_ex() which works like sk_find(), but will
5994 return an index to an element even if an exact match couldn't be
5995 found. The index is guaranteed to point at the element where the
5996 searched-for key would be inserted to preserve sorting order.
5999 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
6000 takes an extra flags argument for optional functionality. Currently,
6001 the following flags are defined:
6003 OBJ_BSEARCH_VALUE_ON_NOMATCH
6004 This one gets OBJ_bsearch_ex() to return a pointer to the first
6005 element where the comparing function returns a negative or zero
6008 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
6009 This one gets OBJ_bsearch_ex() to return a pointer to the first
6010 element where the comparing function returns zero. This is useful
6011 if there are more than one element where the comparing function
6015 *) Make it possible to create self-signed certificates with 'openssl ca'
6016 in such a way that the self-signed certificate becomes part of the
6017 CA database and uses the same mechanisms for serial number generation
6018 as all other certificate signing. The new flag '-selfsign' enables
6019 this functionality. Adapt CA.sh and CA.pl.in.
6022 *) Add functionality to check the public key of a certificate request
6023 against a given private. This is useful to check that a certificate
6024 request can be signed by that key (self-signing).
6027 *) Make it possible to have multiple active certificates with the same
6028 subject in the CA index file. This is done only if the keyword
6029 'unique_subject' is set to 'no' in the main CA section (default
6030 if 'CA_default') of the configuration file. The value is saved
6031 with the database itself in a separate index attribute file,
6032 named like the index file with '.attr' appended to the name.
6035 *) Generate multi-valued AVAs using '+' notation in config files for
6039 *) Support for nameConstraints certificate extension.
6042 *) Support for policyConstraints certificate extension.
6045 *) Support for policyMappings certificate extension.
6048 *) Make sure the default DSA_METHOD implementation only uses its
6049 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
6050 and change its own handlers to be NULL so as to remove unnecessary
6051 indirection. This lets alternative implementations fallback to the
6052 default implementation more easily.
6055 *) Support for directoryName in GeneralName related extensions
6059 *) Make it possible to link applications using Makefile.shared.
6060 Make that possible even when linking against static libraries!
6063 *) Support for single pass processing for S/MIME signing. This now
6064 means that S/MIME signing can be done from a pipe, in addition
6065 cleartext signing (multipart/signed type) is effectively streaming
6066 and the signed data does not need to be all held in memory.
6068 This is done with a new flag PKCS7_STREAM. When this flag is set
6069 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
6070 is done after the data is output (and digests calculated) in
6071 SMIME_write_PKCS7().
6074 *) Add full support for -rpath/-R, both in shared libraries and
6075 applications, at least on the platforms where it's known how
6079 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
6080 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
6081 will now compute a table of multiples of the generator that
6082 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
6083 faster (notably in the case of a single point multiplication,
6084 scalar * generator).
6085 [Nils Larsch, Bodo Moeller]
6087 *) IPv6 support for certificate extensions. The various extensions
6088 which use the IP:a.b.c.d can now take IPv6 addresses using the
6089 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
6093 *) Added an ENGINE that implements RSA by performing private key
6094 exponentiations with the GMP library. The conversions to and from
6095 GMP's mpz_t format aren't optimised nor are any montgomery forms
6096 cached, and on x86 it appears OpenSSL's own performance has caught up.
6097 However there are likely to be other architectures where GMP could
6098 provide a boost. This ENGINE is not built in by default, but it can be
6099 specified at Configure time and should be accompanied by the necessary
6100 linker additions, eg;
6101 ./config -DOPENSSL_USE_GMP -lgmp
6104 *) "openssl engine" will not display ENGINE/DSO load failure errors when
6105 testing availability of engines with "-t" - the old behaviour is
6106 produced by increasing the feature's verbosity with "-tt".
6109 *) ECDSA routines: under certain error conditions uninitialized BN objects
6110 could be freed. Solution: make sure initialization is performed early
6111 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
6115 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
6116 and DH_METHOD (eg. by ENGINE implementations) to override the normal
6117 software implementations. For DSA and DH, parameter generation can
6118 also be overridden by providing the appropriate method callbacks.
6121 *) Change the "progress" mechanism used in key-generation and
6122 primality testing to functions that take a new BN_GENCB pointer in
6123 place of callback/argument pairs. The new API functions have "_ex"
6124 postfixes and the older functions are reimplemented as wrappers for
6125 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
6126 declarations of the old functions to help (graceful) attempts to
6127 migrate to the new functions. Also, the new key-generation API
6128 functions operate on a caller-supplied key-structure and return
6129 success/failure rather than returning a key or NULL - this is to
6130 help make "keygen" another member function of RSA_METHOD etc.
6132 Example for using the new callback interface:
6134 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
6138 BN_GENCB_set(&my_cb, my_callback, my_arg);
6140 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
6141 /* For the meaning of a, b in calls to my_callback(), see the
6142 * documentation of the function that calls the callback.
6143 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
6144 * my_callback should return 1 if it wants BN_is_prime_ex()
6145 * to continue, or 0 to stop.
6150 *) Change the ZLIB compression method to be stateful, and make it
6151 available to TLS with the number defined in
6152 draft-ietf-tls-compression-04.txt.
6155 *) Add the ASN.1 structures and functions for CertificatePair, which
6156 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
6158 CertificatePair ::= SEQUENCE {
6159 forward [0] Certificate OPTIONAL,
6160 reverse [1] Certificate OPTIONAL,
6161 -- at least one of the pair shall be present -- }
6163 Also implement the PEM functions to read and write certificate
6164 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
6166 This needed to be defined, mostly for the sake of the LDAP
6167 attribute crossCertificatePair, but may prove useful elsewhere as
6171 *) Make it possible to inhibit symlinking of shared libraries in
6172 Makefile.shared, for Cygwin's sake.
6175 *) Extend the BIGNUM API by creating a function
6176 void BN_set_negative(BIGNUM *a, int neg);
6177 and a macro that behave like
6178 int BN_is_negative(const BIGNUM *a);
6180 to avoid the need to access 'a->neg' directly in applications.
6183 *) Implement fast modular reduction for pseudo-Mersenne primes
6184 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
6185 EC_GROUP_new_curve_GFp() will now automatically use this
6187 [Nils Larsch <nla@trustcenter.de>]
6189 *) Add new lock type (CRYPTO_LOCK_BN).
6192 *) Change the ENGINE framework to automatically load engines
6193 dynamically from specific directories unless they could be
6194 found to already be built in or loaded. Move all the
6195 current engines except for the cryptodev one to a new
6197 The engines in engines/ are built as shared libraries if
6198 the "shared" options was given to ./Configure or ./config.
6199 Otherwise, they are inserted in libcrypto.a.
6200 /usr/local/ssl/engines is the default directory for dynamic
6201 engines, but that can be overridden at configure time through
6202 the usual use of --prefix and/or --openssldir, and at run
6203 time with the environment variable OPENSSL_ENGINES.
6204 [Geoff Thorpe and Richard Levitte]
6206 *) Add Makefile.shared, a helper makefile to build shared
6207 libraries. Adapt Makefile.org.
6210 *) Add version info to Win32 DLLs.
6211 [Peter 'Luna' Runestig" <peter@runestig.com>]
6213 *) Add new 'medium level' PKCS#12 API. Certificates and keys
6214 can be added using this API to created arbitrary PKCS#12
6215 files while avoiding the low level API.
6217 New options to PKCS12_create(), key or cert can be NULL and
6218 will then be omitted from the output file. The encryption
6219 algorithm NIDs can be set to -1 for no encryption, the mac
6220 iteration count can be set to 0 to omit the mac.
6222 Enhance pkcs12 utility by making the -nokeys and -nocerts
6223 options work when creating a PKCS#12 file. New option -nomac
6224 to omit the mac, NONE can be set for an encryption algorithm.
6225 New code is modified to use the enhanced PKCS12_create()
6226 instead of the low level API.
6229 *) Extend ASN1 encoder to support indefinite length constructed
6230 encoding. This can output sequences tags and octet strings in
6231 this form. Modify pk7_asn1.c to support indefinite length
6232 encoding. This is experimental and needs additional code to
6233 be useful, such as an ASN1 bio and some enhanced streaming
6236 Extend template encode functionality so that tagging is passed
6237 down to the template encoder.
6240 *) Let 'openssl req' fail if an argument to '-newkey' is not
6241 recognized instead of using RSA as a default.
6244 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
6245 As these are not official, they are not included in "ALL";
6246 the "ECCdraft" ciphersuite group alias can be used to select them.
6247 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
6249 *) Add ECDH engine support.
6250 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
6252 *) Add ECDH in new directory crypto/ecdh/.
6253 [Douglas Stebila (Sun Microsystems Laboratories)]
6255 *) Let BN_rand_range() abort with an error after 100 iterations
6256 without success (which indicates a broken PRNG).
6259 *) Change BN_mod_sqrt() so that it verifies that the input value
6260 is really the square of the return value. (Previously,
6261 BN_mod_sqrt would show GIGO behaviour.)
6264 *) Add named elliptic curves over binary fields from X9.62, SECG,
6265 and WAP/WTLS; add OIDs that were still missing.
6267 [Sheueling Chang Shantz and Douglas Stebila
6268 (Sun Microsystems Laboratories)]
6270 *) Extend the EC library for elliptic curves over binary fields
6271 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
6274 EC_GF2m_simple_method
6278 EC_GROUP_new_curve_GF2m
6279 EC_GROUP_set_curve_GF2m
6280 EC_GROUP_get_curve_GF2m
6281 EC_POINT_set_affine_coordinates_GF2m
6282 EC_POINT_get_affine_coordinates_GF2m
6283 EC_POINT_set_compressed_coordinates_GF2m
6285 Point compression for binary fields is disabled by default for
6286 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
6289 As binary polynomials are represented as BIGNUMs, various members
6290 of the EC_GROUP and EC_POINT data structures can be shared
6291 between the implementations for prime fields and binary fields;
6292 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
6293 are essentially identical to their ..._GFp counterparts.
6294 (For simplicity, the '..._GFp' prefix has been dropped from
6295 various internal method names.)
6297 An internal 'field_div' method (similar to 'field_mul' and
6298 'field_sqr') has been added; this is used only for binary fields.
6300 [Sheueling Chang Shantz and Douglas Stebila
6301 (Sun Microsystems Laboratories)]
6303 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
6304 through methods ('mul', 'precompute_mult').
6306 The generic implementations (now internally called 'ec_wNAF_mul'
6307 and 'ec_wNAF_precomputed_mult') remain the default if these
6308 methods are undefined.
6310 [Sheueling Chang Shantz and Douglas Stebila
6311 (Sun Microsystems Laboratories)]
6313 *) New function EC_GROUP_get_degree, which is defined through
6314 EC_METHOD. For curves over prime fields, this returns the bit
6315 length of the modulus.
6317 [Sheueling Chang Shantz and Douglas Stebila
6318 (Sun Microsystems Laboratories)]
6320 *) New functions EC_GROUP_dup, EC_POINT_dup.
6321 (These simply call ..._new and ..._copy).
6323 [Sheueling Chang Shantz and Douglas Stebila
6324 (Sun Microsystems Laboratories)]
6326 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
6327 Polynomials are represented as BIGNUMs (where the sign bit is not
6328 used) in the following functions [macros]:
6331 BN_GF2m_sub [= BN_GF2m_add]
6332 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
6333 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
6334 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
6336 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
6337 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
6338 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
6339 BN_GF2m_cmp [= BN_ucmp]
6341 (Note that only the 'mod' functions are actually for fields GF(2^m).
6342 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
6344 For some functions, an the irreducible polynomial defining a
6345 field can be given as an 'unsigned int[]' with strictly
6346 decreasing elements giving the indices of those bits that are set;
6347 i.e., p[] represents the polynomial
6348 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
6350 p[0] > p[1] > ... > p[k] = 0.
6351 This applies to the following functions:
6356 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
6357 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
6359 BN_GF2m_mod_sqrt_arr
6360 BN_GF2m_mod_solve_quad_arr
6364 Conversion can be performed by the following functions:
6369 bntest.c has additional tests for binary polynomial arithmetic.
6371 Two implementations for BN_GF2m_mod_div() are available.
6372 The default algorithm simply uses BN_GF2m_mod_inv() and
6373 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
6374 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
6375 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
6377 [Sheueling Chang Shantz and Douglas Stebila
6378 (Sun Microsystems Laboratories)]
6380 *) Add new error code 'ERR_R_DISABLED' that can be used when some
6381 functionality is disabled at compile-time.
6382 [Douglas Stebila <douglas.stebila@sun.com>]
6384 *) Change default behaviour of 'openssl asn1parse' so that more
6385 information is visible when viewing, e.g., a certificate:
6387 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
6388 mode the content of non-printable OCTET STRINGs is output in a
6389 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
6390 avoid the appearance of a printable string.
6391 [Nils Larsch <nla@trustcenter.de>]
6393 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
6395 EC_GROUP_set_asn1_flag()
6396 EC_GROUP_get_asn1_flag()
6397 EC_GROUP_set_point_conversion_form()
6398 EC_GROUP_get_point_conversion_form()
6399 These control ASN1 encoding details:
6400 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
6401 has been set to OPENSSL_EC_NAMED_CURVE.
6402 - Points are encoded in uncompressed form by default; options for
6403 asn1_for are as for point2oct, namely
6404 POINT_CONVERSION_COMPRESSED
6405 POINT_CONVERSION_UNCOMPRESSED
6406 POINT_CONVERSION_HYBRID
6408 Also add 'seed' and 'seed_len' members to EC_GROUP with access
6411 EC_GROUP_get0_seed()
6412 EC_GROUP_get_seed_len()
6413 This is used only for ASN1 purposes (so far).
6414 [Nils Larsch <nla@trustcenter.de>]
6416 *) Add 'field_type' member to EC_METHOD, which holds the NID
6417 of the appropriate field type OID. The new function
6418 EC_METHOD_get_field_type() returns this value.
6419 [Nils Larsch <nla@trustcenter.de>]
6424 EC_POINT_point2hex()
6425 EC_POINT_hex2point()
6426 providing useful interfaces to EC_POINT_point2oct() and
6427 EC_POINT_oct2point().
6428 [Nils Larsch <nla@trustcenter.de>]
6430 *) Change internals of the EC library so that the functions
6431 EC_GROUP_set_generator()
6432 EC_GROUP_get_generator()
6433 EC_GROUP_get_order()
6434 EC_GROUP_get_cofactor()
6435 are implemented directly in crypto/ec/ec_lib.c and not dispatched
6436 to methods, which would lead to unnecessary code duplication when
6437 adding different types of curves.
6438 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
6440 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
6441 arithmetic, and such that modified wNAFs are generated
6442 (which avoid length expansion in many cases).
6445 *) Add a function EC_GROUP_check_discriminant() (defined via
6446 EC_METHOD) that verifies that the curve discriminant is non-zero.
6448 Add a function EC_GROUP_check() that makes some sanity tests
6449 on a EC_GROUP, its generator and order. This includes
6450 EC_GROUP_check_discriminant().
6451 [Nils Larsch <nla@trustcenter.de>]
6453 *) Add ECDSA in new directory crypto/ecdsa/.
6455 Add applications 'openssl ecparam' and 'openssl ecdsa'
6456 (these are based on 'openssl dsaparam' and 'openssl dsa').
6458 ECDSA support is also included in various other files across the
6459 library. Most notably,
6460 - 'openssl req' now has a '-newkey ecdsa:file' option;
6461 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
6462 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
6463 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
6464 them suitable for ECDSA where domain parameters must be
6465 extracted before the specific public key;
6466 - ECDSA engine support has been added.
6467 [Nils Larsch <nla@trustcenter.de>]
6469 *) Include some named elliptic curves, and add OIDs from X9.62,
6470 SECG, and WAP/WTLS. Each curve can be obtained from the new
6472 EC_GROUP_new_by_curve_name(),
6473 and the list of available named curves can be obtained with
6474 EC_get_builtin_curves().
6475 Also add a 'curve_name' member to EC_GROUP objects, which can be
6477 EC_GROUP_set_curve_name()
6478 EC_GROUP_get_curve_name()
6479 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
6481 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6482 was actually never needed) and in BN_mul(). The removal in BN_mul()
6483 required a small change in bn_mul_part_recursive() and the addition
6484 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6485 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6486 bn_sub_words() and bn_add_words() except they take arrays with
6490 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
6492 *) Cleanse PEM buffers before freeing them since they may contain
6494 [Benjamin Bennett <ben@psc.edu>]
6496 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
6497 a ciphersuite string such as "DEFAULT:RSA" cannot enable
6498 authentication-only ciphersuites.
6501 *) Since AES128 and AES256 share a single mask bit in the logic of
6502 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
6503 kludge to work properly if AES128 is available and AES256 isn't.
6506 *) Expand security boundary to match 1.1.1 module.
6509 *) Remove redundant features: hash file source, editing of test vectors
6510 modify fipsld to use external fips_premain.c signature.
6513 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
6514 run algorithm test programs.
6517 *) Make algorithm test programs more tolerant of whitespace.
6520 *) Have SSL/TLS server implementation tolerate "mismatched" record
6521 protocol version while receiving ClientHello even if the
6522 ClientHello is fragmented. (The server can't insist on the
6523 particular protocol version it has chosen before the ServerHello
6524 message has informed the client about his choice.)
6527 *) Load error codes if they are not already present instead of using a
6528 static variable. This allows them to be cleanly unloaded and reloaded.
6531 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
6533 *) Introduce limits to prevent malicious keys being able to
6534 cause a denial of service. (CVE-2006-2940)
6535 [Steve Henson, Bodo Moeller]
6537 *) Fix ASN.1 parsing of certain invalid structures that can result
6538 in a denial of service. (CVE-2006-2937) [Steve Henson]
6540 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
6541 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
6543 *) Fix SSL client code which could crash if connecting to a
6544 malicious SSLv2 server. (CVE-2006-4343)
6545 [Tavis Ormandy and Will Drewry, Google Security Team]
6547 *) Change ciphersuite string processing so that an explicit
6548 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
6549 will no longer include "AES128-SHA"), and any other similar
6550 ciphersuite (same bitmap) from *other* protocol versions (so that
6551 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
6552 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
6553 changes from 0.9.8b and 0.9.8d.
6556 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
6558 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
6559 (CVE-2006-4339) [Ben Laurie and Google Security Team]
6561 *) Change the Unix randomness entropy gathering to use poll() when
6562 possible instead of select(), since the latter has some
6563 undesirable limitations.
6564 [Darryl Miles via Richard Levitte and Bodo Moeller]
6566 *) Disable rogue ciphersuites:
6568 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
6569 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
6570 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
6572 The latter two were purportedly from
6573 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
6576 Also deactivate the remaining ciphersuites from
6577 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
6578 unofficial, and the ID has long expired.
6581 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
6582 dual-core machines) and other potential thread-safety issues.
6585 Changes between 0.9.7i and 0.9.7j [04 May 2006]
6587 *) Adapt fipsld and the build system to link against the validated FIPS
6588 module in FIPS mode.
6591 *) Fixes for VC++ 2005 build under Windows.
6594 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
6595 from a Windows bash shell such as MSYS. It is autodetected from the
6596 "config" script when run from a VC++ environment. Modify standard VC++
6597 build to use fipscanister.o from the GNU make build.
6600 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
6602 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
6603 The value now differs depending on if you build for FIPS or not.
6604 BEWARE! A program linked with a shared FIPSed libcrypto can't be
6605 safely run with a non-FIPSed libcrypto, as it may crash because of
6606 the difference induced by this change.
6609 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
6611 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
6612 (part of SSL_OP_ALL). This option used to disable the
6613 countermeasure against man-in-the-middle protocol-version
6614 rollback in the SSL 2.0 server implementation, which is a bad
6615 idea. (CVE-2005-2969)
6617 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
6618 for Information Security, National Institute of Advanced Industrial
6619 Science and Technology [AIST], Japan)]
6621 *) Minimal support for X9.31 signatures and PSS padding modes. This is
6622 mainly for FIPS compliance and not fully integrated at this stage.
6625 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
6626 the exponentiation using a fixed-length exponent. (Otherwise,
6627 the information leaked through timing could expose the secret key
6628 after many signatures; cf. Bleichenbacher's attack on DSA with
6632 *) Make a new fixed-window mod_exp implementation the default for
6633 RSA, DSA, and DH private-key operations so that the sequence of
6634 squares and multiplies and the memory access pattern are
6635 independent of the particular secret key. This will mitigate
6636 cache-timing and potential related attacks.
6638 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
6639 and this is automatically used by BN_mod_exp_mont() if the new flag
6640 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
6641 will use this BN flag for private exponents unless the flag
6642 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
6643 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
6645 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
6647 *) Change the client implementation for SSLv23_method() and
6648 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
6649 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
6650 (Previously, the SSL 2.0 backwards compatible Client Hello
6651 message format would be used even with SSL_OP_NO_SSLv2.)
6654 *) Add support for smime-type MIME parameter in S/MIME messages which some
6658 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
6659 a threadsafe manner. Modify rsa code to use new function and add calls
6660 to dsa and dh code (which had race conditions before).
6663 *) Include the fixed error library code in the C error file definitions
6664 instead of fixing them up at runtime. This keeps the error code
6665 structures constant.
6668 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
6670 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
6673 *) Fixes for newer kerberos headers. NB: the casts are needed because
6674 the 'length' field is signed on one version and unsigned on another
6675 with no (?) obvious way to tell the difference, without these VC++
6676 complains. Also the "definition" of FAR (blank) is no longer included
6677 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
6678 some needed definitions.
6681 *) Undo Cygwin change.
6684 *) Added support for proxy certificates according to RFC 3820.
6685 Because they may be a security thread to unaware applications,
6686 they must be explicitly allowed in run-time. See
6687 docs/HOWTO/proxy_certificates.txt for further information.
6690 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
6692 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
6693 server and client random values. Previously
6694 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
6695 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
6697 This change has negligible security impact because:
6699 1. Server and client random values still have 24 bytes of pseudo random
6702 2. Server and client random values are sent in the clear in the initial
6705 3. The master secret is derived using the premaster secret (48 bytes in
6706 size for static RSA ciphersuites) as well as client server and random
6709 The OpenSSL team would like to thank the UK NISCC for bringing this issue
6712 [Stephen Henson, reported by UK NISCC]
6714 *) Use Windows randomness collection on Cygwin.
6717 *) Fix hang in EGD/PRNGD query when communication socket is closed
6718 prematurely by EGD/PRNGD.
6719 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
6721 *) Prompt for pass phrases when appropriate for PKCS12 input format.
6724 *) Back-port of selected performance improvements from development
6725 branch, as well as improved support for PowerPC platforms.
6728 *) Add lots of checks for memory allocation failure, error codes to indicate
6729 failure and freeing up memory if a failure occurs.
6730 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
6732 *) Add new -passin argument to dgst.
6735 *) Perform some character comparisons of different types in X509_NAME_cmp:
6736 this is needed for some certificates that re-encode DNs into UTF8Strings
6737 (in violation of RFC3280) and can't or won't issue name rollover
6741 *) Make an explicit check during certificate validation to see that
6742 the CA setting in each certificate on the chain is correct. As a
6743 side effect always do the following basic checks on extensions,
6744 not just when there's an associated purpose to the check:
6746 - if there is an unhandled critical extension (unless the user
6747 has chosen to ignore this fault)
6748 - if the path length has been exceeded (if one is set at all)
6749 - that certain extensions fit the associated purpose (if one has
6753 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
6755 *) Avoid a race condition when CRLs are checked in a multi threaded
6756 environment. This would happen due to the reordering of the revoked
6757 entries during signature checking and serial number lookup. Now the
6758 encoding is cached and the serial number sort performed under a lock.
6759 Add new STACK function sk_is_sorted().
6762 *) Add Delta CRL to the extension code.
6765 *) Various fixes to s3_pkt.c so alerts are sent properly.
6766 [David Holmes <d.holmes@f5.com>]
6768 *) Reduce the chances of duplicate issuer name and serial numbers (in
6769 violation of RFC3280) using the OpenSSL certificate creation utilities.
6770 This is done by creating a random 64 bit value for the initial serial
6771 number when a serial number file is created or when a self signed
6772 certificate is created using 'openssl req -x509'. The initial serial
6773 number file is created using 'openssl x509 -next_serial' in CA.pl
6774 rather than being initialized to 1.
6777 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
6779 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
6780 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
6781 [Joe Orton, Steve Henson]
6783 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
6785 [Joe Orton, Steve Henson]
6787 *) Make it possible to have multiple active certificates with the same
6788 subject in the CA index file. This is done only if the keyword
6789 'unique_subject' is set to 'no' in the main CA section (default
6790 if 'CA_default') of the configuration file. The value is saved
6791 with the database itself in a separate index attribute file,
6792 named like the index file with '.attr' appended to the name.
6795 *) X509 verify fixes. Disable broken certificate workarounds when
6796 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
6797 keyUsage extension present. Don't accept CRLs with unhandled critical
6798 extensions: since verify currently doesn't process CRL extensions this
6799 rejects a CRL with *any* critical extensions. Add new verify error codes
6803 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
6804 A clarification of RFC2560 will require the use of OCTET STRINGs and
6805 some implementations cannot handle the current raw format. Since OpenSSL
6806 copies and compares OCSP nonces as opaque blobs without any attempt at
6807 parsing them this should not create any compatibility issues.
6810 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
6811 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
6812 this HMAC (and other) operations are several times slower than OpenSSL
6816 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
6817 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
6819 *) Use the correct content when signing type "other".
6822 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
6824 *) Fix various bugs revealed by running the NISCC test suite:
6826 Stop out of bounds reads in the ASN1 code when presented with
6827 invalid tags (CVE-2003-0543 and CVE-2003-0544).
6829 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
6831 If verify callback ignores invalid public key errors don't try to check
6832 certificate signature with the NULL public key.
6836 *) New -ignore_err option in ocsp application to stop the server
6837 exiting on the first error in a request.
6840 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
6841 if the server requested one: as stated in TLS 1.0 and SSL 3.0
6845 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
6846 extra data after the compression methods not only for TLS 1.0
6847 but also for SSL 3.0 (as required by the specification).
6848 [Bodo Moeller; problem pointed out by Matthias Loepfe]
6850 *) Change X509_certificate_type() to mark the key as exported/exportable
6851 when it's 512 *bits* long, not 512 bytes.
6854 *) Change AES_cbc_encrypt() so it outputs exact multiple of
6855 blocks during encryption.
6858 *) Various fixes to base64 BIO and non blocking I/O. On write
6859 flushes were not handled properly if the BIO retried. On read
6860 data was not being buffered properly and had various logic bugs.
6861 This also affects blocking I/O when the data being decoded is a
6865 *) Various S/MIME bugfixes and compatibility changes:
6866 output correct application/pkcs7 MIME type if
6867 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
6868 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
6869 of files as .eml work). Correctly handle very long lines in MIME
6873 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
6875 *) Countermeasure against the Klima-Pokorny-Rosa extension of
6876 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
6877 a protocol version number mismatch like a decryption error
6878 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
6881 *) Turn on RSA blinding by default in the default implementation
6882 to avoid a timing attack. Applications that don't want it can call
6883 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
6884 They would be ill-advised to do so in most cases.
6885 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
6887 *) Change RSA blinding code so that it works when the PRNG is not
6888 seeded (in this case, the secret RSA exponent is abused as
6889 an unpredictable seed -- if it is not unpredictable, there
6890 is no point in blinding anyway). Make RSA blinding thread-safe
6891 by remembering the creator's thread ID in rsa->blinding and
6892 having all other threads use local one-time blinding factors
6893 (this requires more computation than sharing rsa->blinding, but
6894 avoids excessive locking; and if an RSA object is not shared
6895 between threads, blinding will still be very fast).
6898 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
6899 ENGINE as defaults for all supported algorithms irrespective of
6900 the 'flags' parameter. 'flags' is now honoured, so applications
6901 should make sure they are passing it correctly.
6904 *) Target "mingw" now allows native Windows code to be generated in
6905 the Cygwin environment as well as with the MinGW compiler.
6908 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
6910 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
6911 via timing by performing a MAC computation even if incorrect
6912 block cipher padding has been found. This is a countermeasure
6913 against active attacks where the attacker has to distinguish
6914 between bad padding and a MAC verification error. (CVE-2003-0078)
6916 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
6917 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
6918 Martin Vuagnoux (EPFL, Ilion)]
6920 *) Make the no-err option work as intended. The intention with no-err
6921 is not to have the whole error stack handling routines removed from
6922 libcrypto, it's only intended to remove all the function name and
6923 reason texts, thereby removing some of the footprint that may not
6924 be interesting if those errors aren't displayed anyway.
6926 NOTE: it's still possible for any application or module to have it's
6927 own set of error texts inserted. The routines are there, just not
6928 used by default when no-err is given.
6931 *) Add support for FreeBSD on IA64.
6932 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
6934 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
6935 Kerberos function mit_des_cbc_cksum(). Before this change,
6936 the value returned by DES_cbc_cksum() was like the one from
6937 mit_des_cbc_cksum(), except the bytes were swapped.
6938 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
6940 *) Allow an application to disable the automatic SSL chain building.
6941 Before this a rather primitive chain build was always performed in
6942 ssl3_output_cert_chain(): an application had no way to send the
6943 correct chain if the automatic operation produced an incorrect result.
6945 Now the chain builder is disabled if either:
6947 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
6949 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
6951 The reasoning behind this is that an application would not want the
6952 auto chain building to take place if extra chain certificates are
6953 present and it might also want a means of sending no additional
6954 certificates (for example the chain has two certificates and the
6958 *) Add the possibility to build without the ENGINE framework.
6959 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
6961 *) Under Win32 gmtime() can return NULL: check return value in
6962 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
6965 *) DSA routines: under certain error conditions uninitialized BN objects
6966 could be freed. Solution: make sure initialization is performed early
6967 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
6968 Nils Larsch <nla@trustcenter.de> via PR#459)
6971 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
6972 checked on reconnect on the client side, therefore session resumption
6973 could still fail with a "ssl session id is different" error. This
6974 behaviour is masked when SSL_OP_ALL is used due to
6975 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
6976 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
6977 followup to PR #377.
6980 *) IA-32 assembler support enhancements: unified ELF targets, support
6981 for SCO/Caldera platforms, fix for Cygwin shared build.
6984 *) Add support for FreeBSD on sparc64. As a consequence, support for
6985 FreeBSD on non-x86 processors is separate from x86 processors on
6986 the config script, much like the NetBSD support.
6987 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
6989 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
6991 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
6994 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
6995 code (06) was taken as the first octet of the session ID and the last
6996 octet was ignored consequently. As a result SSLv2 client side session
6997 caching could not have worked due to the session ID mismatch between
6999 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7003 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
7004 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
7008 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
7009 seems that in spite of existing for more than a year, many application
7010 author have done nothing to provide the necessary callbacks, which
7011 means that this particular engine will not work properly anywhere.
7012 This is a very unfortunate situation which forces us, in the name
7013 of usability, to give the hw_ncipher.c a static lock, which is part
7015 NOTE: This is for the 0.9.7 series ONLY. This hack will never
7016 appear in 0.9.8 or later. We EXPECT application authors to have
7017 dealt properly with this when 0.9.8 is released (unless we actually
7018 make such changes in the libcrypto locking code that changes will
7019 have to be made anyway).
7022 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
7023 octets have been read, EOF or an error occurs. Without this change
7024 some truncated ASN1 structures will not produce an error.
7027 *) Disable Heimdal support, since it hasn't been fully implemented.
7028 Still give the possibility to force the use of Heimdal, but with
7029 warnings and a request that patches get sent to openssl-dev.
7032 *) Add the VC-CE target, introduce the WINCE sysname, and add
7033 INSTALL.WCE and appropriate conditionals to make it build.
7034 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7036 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
7037 cygssl-x.y.z.dll, where x, y and z are the major, minor and
7038 edit numbers of the version.
7039 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7041 *) Introduce safe string copy and catenation functions
7042 (BUF_strlcpy() and BUF_strlcat()).
7043 [Ben Laurie (CHATS) and Richard Levitte]
7045 *) Avoid using fixed-size buffers for one-line DNs.
7046 [Ben Laurie (CHATS)]
7048 *) Add BUF_MEM_grow_clean() to avoid information leakage when
7049 resizing buffers containing secrets, and use where appropriate.
7050 [Ben Laurie (CHATS)]
7052 *) Avoid using fixed size buffers for configuration file location.
7053 [Ben Laurie (CHATS)]
7055 *) Avoid filename truncation for various CA files.
7056 [Ben Laurie (CHATS)]
7058 *) Use sizeof in preference to magic numbers.
7059 [Ben Laurie (CHATS)]
7061 *) Avoid filename truncation in cert requests.
7062 [Ben Laurie (CHATS)]
7064 *) Add assertions to check for (supposedly impossible) buffer
7066 [Ben Laurie (CHATS)]
7068 *) Don't cache truncated DNS entries in the local cache (this could
7069 potentially lead to a spoofing attack).
7070 [Ben Laurie (CHATS)]
7072 *) Fix various buffers to be large enough for hex/decimal
7073 representations in a platform independent manner.
7074 [Ben Laurie (CHATS)]
7076 *) Add CRYPTO_realloc_clean() to avoid information leakage when
7077 resizing buffers containing secrets, and use where appropriate.
7078 [Ben Laurie (CHATS)]
7080 *) Add BIO_indent() to avoid much slightly worrying code to do
7082 [Ben Laurie (CHATS)]
7084 *) Convert sprintf()/BIO_puts() to BIO_printf().
7085 [Ben Laurie (CHATS)]
7087 *) buffer_gets() could terminate with the buffer only half
7089 [Ben Laurie (CHATS)]
7091 *) Add assertions to prevent user-supplied crypto functions from
7092 overflowing internal buffers by having large block sizes, etc.
7093 [Ben Laurie (CHATS)]
7095 *) New OPENSSL_assert() macro (similar to assert(), but enabled
7097 [Ben Laurie (CHATS)]
7099 *) Eliminate unused copy of key in RC4.
7100 [Ben Laurie (CHATS)]
7102 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
7103 [Ben Laurie (CHATS)]
7105 *) Fix off-by-one error in EGD path.
7106 [Ben Laurie (CHATS)]
7108 *) If RANDFILE path is too long, ignore instead of truncating.
7109 [Ben Laurie (CHATS)]
7111 *) Eliminate unused and incorrectly sized X.509 structure
7113 [Ben Laurie (CHATS)]
7115 *) Eliminate unused and dangerous function knumber().
7116 [Ben Laurie (CHATS)]
7118 *) Eliminate unused and dangerous structure, KSSL_ERR.
7119 [Ben Laurie (CHATS)]
7121 *) Protect against overlong session ID context length in an encoded
7122 session object. Since these are local, this does not appear to be
7124 [Ben Laurie (CHATS)]
7126 *) Change from security patch (see 0.9.6e below) that did not affect
7127 the 0.9.6 release series:
7129 Remote buffer overflow in SSL3 protocol - an attacker could
7130 supply an oversized master key in Kerberos-enabled versions.
7132 [Ben Laurie (CHATS)]
7134 *) Change the SSL kerb5 codes to match RFC 2712.
7137 *) Make -nameopt work fully for req and add -reqopt switch.
7138 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
7140 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
7141 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
7143 *) Make sure tests can be performed even if the corresponding algorithms
7144 have been removed entirely. This was also the last step to make
7145 OpenSSL compilable with DJGPP under all reasonable conditions.
7146 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
7148 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
7149 to allow version independent disabling of normally unselected ciphers,
7150 which may be activated as a side-effect of selecting a single cipher.
7152 (E.g., cipher list string "RSA" enables ciphersuites that are left
7153 out of "ALL" because they do not provide symmetric encryption.
7154 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
7155 [Lutz Jaenicke, Bodo Moeller]
7157 *) Add appropriate support for separate platform-dependent build
7158 directories. The recommended way to make a platform-dependent
7159 build directory is the following (tested on Linux), maybe with
7162 # Place yourself outside of the OpenSSL source tree. In
7163 # this example, the environment variable OPENSSL_SOURCE
7164 # is assumed to contain the absolute OpenSSL source directory.
7165 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
7166 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
7167 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
7168 mkdir -p `dirname $F`
7169 ln -s $OPENSSL_SOURCE/$F $F
7172 To be absolutely sure not to disturb the source tree, a "make clean"
7173 is a good thing. If it isn't successful, don't worry about it,
7174 it probably means the source directory is very clean.
7177 *) Make sure any ENGINE control commands make local copies of string
7178 pointers passed to them whenever necessary. Otherwise it is possible
7179 the caller may have overwritten (or deallocated) the original string
7180 data when a later ENGINE operation tries to use the stored values.
7181 [Götz Babin-Ebell <babinebell@trustcenter.de>]
7183 *) Improve diagnostics in file reading and command-line digests.
7184 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
7186 *) Add AES modes CFB and OFB to the object database. Correct an
7187 error in AES-CFB decryption.
7190 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
7191 allows existing EVP_CIPHER_CTX structures to be reused after
7192 calling EVP_*Final(). This behaviour is used by encryption
7193 BIOs and some applications. This has the side effect that
7194 applications must explicitly clean up cipher contexts with
7195 EVP_CIPHER_CTX_cleanup() or they will leak memory.
7198 *) Check the values of dna and dnb in bn_mul_recursive before calling
7199 bn_mul_comba (a non zero value means the a or b arrays do not contain
7200 n2 elements) and fallback to bn_mul_normal if either is not zero.
7203 *) Fix escaping of non-ASCII characters when using the -subj option
7204 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
7207 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
7208 form for "surname", serialNumber has no short form.
7209 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
7210 therefore remove "mail" short name for "internet 7".
7211 The OID for unique identifiers in X509 certificates is
7212 x500UniqueIdentifier, not uniqueIdentifier.
7213 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
7216 *) Add an "init" command to the ENGINE config module and auto initialize
7217 ENGINEs. Without any "init" command the ENGINE will be initialized
7218 after all ctrl commands have been executed on it. If init=1 the
7219 ENGINE is initialized at that point (ctrls before that point are run
7220 on the uninitialized ENGINE and after on the initialized one). If
7221 init=0 then the ENGINE will not be initialized at all.
7224 *) Fix the 'app_verify_callback' interface so that the user-defined
7225 argument is actually passed to the callback: In the
7226 SSL_CTX_set_cert_verify_callback() prototype, the callback
7227 declaration has been changed from
7230 int (*cb)(X509_STORE_CTX *,void *);
7231 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
7232 i=s->ctx->app_verify_callback(&ctx)
7233 has been changed into
7234 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
7236 To update applications using SSL_CTX_set_cert_verify_callback(),
7237 a dummy argument can be added to their callback functions.
7238 [D. K. Smetters <smetters@parc.xerox.com>]
7240 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
7241 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
7243 *) Add and OPENSSL_LOAD_CONF define which will cause
7244 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
7245 This allows older applications to transparently support certain
7246 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
7247 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
7248 load the config file and OPENSSL_add_all_algorithms_conf() which will
7249 always load it have also been added.
7252 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
7253 Adjust NIDs and EVP layer.
7254 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7256 *) Config modules support in openssl utility.
7258 Most commands now load modules from the config file,
7259 though in a few (such as version) this isn't done
7260 because it couldn't be used for anything.
7262 In the case of ca and req the config file used is
7263 the same as the utility itself: that is the -config
7264 command line option can be used to specify an
7268 *) Move default behaviour from OPENSSL_config(). If appname is NULL
7269 use "openssl_conf" if filename is NULL use default openssl config file.
7272 *) Add an argument to OPENSSL_config() to allow the use of an alternative
7273 config section name. Add a new flag to tolerate a missing config file
7274 and move code to CONF_modules_load_file().
7277 *) Support for crypto accelerator cards from Accelerated Encryption
7278 Processing, www.aep.ie. (Use engine 'aep')
7279 The support was copied from 0.9.6c [engine] and adapted/corrected
7280 to work with the new engine framework.
7281 [AEP Inc. and Richard Levitte]
7283 *) Support for SureWare crypto accelerator cards from Baltimore
7284 Technologies. (Use engine 'sureware')
7285 The support was copied from 0.9.6c [engine] and adapted
7286 to work with the new engine framework.
7289 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
7290 make the newer ENGINE framework commands for the CHIL engine work.
7291 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
7293 *) Make it possible to produce shared libraries on ReliantUNIX.
7294 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
7296 *) Add the configuration target debug-linux-ppro.
7297 Make 'openssl rsa' use the general key loading routines
7298 implemented in apps.c, and make those routines able to
7299 handle the key format FORMAT_NETSCAPE and the variant
7301 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7303 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7304 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7306 *) Add -keyform to rsautl, and document -engine.
7307 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
7309 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
7310 BIO_R_NO_SUCH_FILE error code rather than the generic
7311 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
7314 *) Add new functions
7316 ERR_peek_last_error_line
7317 ERR_peek_last_error_line_data.
7318 These are similar to
7321 ERR_peek_error_line_data,
7322 but report on the latest error recorded rather than the first one
7323 still in the error queue.
7324 [Ben Laurie, Bodo Moeller]
7326 *) default_algorithms option in ENGINE config module. This allows things
7328 default_algorithms = ALL
7329 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
7332 *) Preliminary ENGINE config module.
7335 *) New experimental application configuration code.
7338 *) Change the AES code to follow the same name structure as all other
7339 symmetric ciphers, and behave the same way. Move everything to
7340 the directory crypto/aes, thereby obsoleting crypto/rijndael.
7341 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7343 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
7344 [Ben Laurie and Theo de Raadt]
7346 *) Add option to output public keys in req command.
7347 [Massimiliano Pala madwolf@openca.org]
7349 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
7350 (up to about 10% better than before for P-192 and P-224).
7353 *) New functions/macros
7355 SSL_CTX_set_msg_callback(ctx, cb)
7356 SSL_CTX_set_msg_callback_arg(ctx, arg)
7357 SSL_set_msg_callback(ssl, cb)
7358 SSL_set_msg_callback_arg(ssl, arg)
7360 to request calling a callback function
7362 void cb(int write_p, int version, int content_type,
7363 const void *buf, size_t len, SSL *ssl, void *arg)
7365 whenever a protocol message has been completely received
7366 (write_p == 0) or sent (write_p == 1). Here 'version' is the
7367 protocol version according to which the SSL library interprets
7368 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
7369 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
7370 the content type as defined in the SSL 3.0/TLS 1.0 protocol
7371 specification (change_cipher_spec(20), alert(21), handshake(22)).
7372 'buf' and 'len' point to the actual message, 'ssl' to the
7373 SSL object, and 'arg' is the application-defined value set by
7374 SSL[_CTX]_set_msg_callback_arg().
7376 'openssl s_client' and 'openssl s_server' have new '-msg' options
7377 to enable a callback that displays all protocol messages.
7380 *) Change the shared library support so shared libraries are built as
7381 soon as the corresponding static library is finished, and thereby get
7382 openssl and the test programs linked against the shared library.
7383 This still only happens when the keyword "shard" has been given to
7384 the configuration scripts.
7386 NOTE: shared library support is still an experimental thing, and
7387 backward binary compatibility is still not guaranteed.
7388 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
7390 *) Add support for Subject Information Access extension.
7391 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7393 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
7394 additional bytes when new memory had to be allocated, not just
7395 when reusing an existing buffer.
7398 *) New command line and configuration option 'utf8' for the req command.
7399 This allows field values to be specified as UTF8 strings.
7402 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
7403 runs for the former and machine-readable output for the latter.
7406 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
7407 of the e-mail address in the DN (i.e., it will go into a certificate
7408 extension only). The new configuration file option 'email_in_dn = no'
7409 has the same effect.
7410 [Massimiliano Pala madwolf@openca.org]
7412 *) Change all functions with names starting with des_ to be starting
7413 with DES_ instead. Add wrappers that are compatible with libdes,
7414 but are named _ossl_old_des_*. Finally, add macros that map the
7415 des_* symbols to the corresponding _ossl_old_des_* if libdes
7416 compatibility is desired. If OpenSSL 0.9.6c compatibility is
7417 desired, the des_* symbols will be mapped to DES_*, with one
7420 Since we provide two compatibility mappings, the user needs to
7421 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
7422 compatibility is desired. The default (i.e., when that macro
7423 isn't defined) is OpenSSL 0.9.6c compatibility.
7425 There are also macros that enable and disable the support of old
7426 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
7427 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
7428 are defined, the default will apply: to support the old des routines.
7430 In either case, one must include openssl/des.h to get the correct
7431 definitions. Do not try to just include openssl/des_old.h, that
7434 NOTE: This is a major break of an old API into a new one. Software
7435 authors are encouraged to switch to the DES_ style functions. Some
7436 time in the future, des_old.h and the libdes compatibility functions
7437 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
7438 default), and then completely removed.
7441 *) Test for certificates which contain unsupported critical extensions.
7442 If such a certificate is found during a verify operation it is
7443 rejected by default: this behaviour can be overridden by either
7444 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
7445 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
7446 X509_supported_extension() has also been added which returns 1 if a
7447 particular extension is supported.
7450 *) Modify the behaviour of EVP cipher functions in similar way to digests
7451 to retain compatibility with existing code.
7454 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
7455 compatibility with existing code. In particular the 'ctx' parameter does
7456 not have to be to be initialized before the call to EVP_DigestInit() and
7457 it is tidied up after a call to EVP_DigestFinal(). New function
7458 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
7459 EVP_MD_CTX_copy() changed to not require the destination to be
7460 initialized valid and new function EVP_MD_CTX_copy_ex() added which
7461 requires the destination to be valid.
7463 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
7464 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
7467 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
7468 so that complete 'Handshake' protocol structures are kept in memory
7469 instead of overwriting 'msg_type' and 'length' with 'body' data.
7472 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
7473 [Massimo Santin via Richard Levitte]
7475 *) Major restructuring to the underlying ENGINE code. This includes
7476 reduction of linker bloat, separation of pure "ENGINE" manipulation
7477 (initialisation, etc) from functionality dealing with implementations
7478 of specific crypto interfaces. This change also introduces integrated
7479 support for symmetric ciphers and digest implementations - so ENGINEs
7480 can now accelerate these by providing EVP_CIPHER and EVP_MD
7481 implementations of their own. This is detailed in crypto/engine/README
7482 as it couldn't be adequately described here. However, there are a few
7483 API changes worth noting - some RSA, DSA, DH, and RAND functions that
7484 were changed in the original introduction of ENGINE code have now
7485 reverted back - the hooking from this code to ENGINE is now a good
7486 deal more passive and at run-time, operations deal directly with
7487 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
7488 dereferencing through an ENGINE pointer any more. Also, the ENGINE
7489 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
7490 they were not being used by the framework as there is no concept of a
7491 BIGNUM_METHOD and they could not be generalised to the new
7492 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
7493 ENGINE_cpy() has been removed as it cannot be consistently defined in
7497 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
7500 *) Change mkdef.pl to sort symbols that get the same entry number,
7501 and make sure the automatically generated functions ERR_load_*
7502 become part of libeay.num as well.
7505 *) New function SSL_renegotiate_pending(). This returns true once
7506 renegotiation has been requested (either SSL_renegotiate() call
7507 or HelloRequest/ClientHello received from the peer) and becomes
7508 false once a handshake has been completed.
7509 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
7510 sends a HelloRequest, but does not ensure that a handshake takes
7511 place. SSL_renegotiate_pending() is useful for checking if the
7512 client has followed the request.)
7515 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
7516 By default, clients may request session resumption even during
7517 renegotiation (if session ID contexts permit); with this option,
7518 session resumption is possible only in the first handshake.
7520 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
7521 more bits available for options that should not be part of
7522 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
7525 *) Add some demos for certificate and certificate request creation.
7528 *) Make maximum certificate chain size accepted from the peer application
7529 settable (SSL*_get/set_max_cert_list()), as proposed by
7530 "Douglas E. Engert" <deengert@anl.gov>.
7533 *) Add support for shared libraries for Unixware-7
7534 (Boyd Lynn Gerber <gerberb@zenez.com>).
7537 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
7538 be done prior to destruction. Use this to unload error strings from
7539 ENGINEs that load their own error strings. NB: This adds two new API
7540 functions to "get" and "set" this destroy handler in an ENGINE.
7543 *) Alter all existing ENGINE implementations (except "openssl" and
7544 "openbsd") to dynamically instantiate their own error strings. This
7545 makes them more flexible to be built both as statically-linked ENGINEs
7546 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
7547 Also, add stub code to each that makes building them as self-contained
7548 shared-libraries easier (see README.ENGINE).
7551 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
7552 implementations into applications that are completely implemented in
7553 self-contained shared-libraries. The "dynamic" ENGINE exposes control
7554 commands that can be used to configure what shared-library to load and
7555 to control aspects of the way it is handled. Also, made an update to
7556 the README.ENGINE file that brings its information up-to-date and
7557 provides some information and instructions on the "dynamic" ENGINE
7558 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
7561 *) Make it possible to unload ranges of ERR strings with a new
7562 "ERR_unload_strings" function.
7565 *) Add a copy() function to EVP_MD.
7568 *) Make EVP_MD routines take a context pointer instead of just the
7569 md_data void pointer.
7572 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
7573 that the digest can only process a single chunk of data
7574 (typically because it is provided by a piece of
7575 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
7576 is only going to provide a single chunk of data, and hence the
7577 framework needn't accumulate the data for oneshot drivers.
7580 *) As with "ERR", make it possible to replace the underlying "ex_data"
7581 functions. This change also alters the storage and management of global
7582 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
7583 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
7584 index counters. The API functions that use this state have been changed
7585 to take a "class_index" rather than pointers to the class's local STACK
7586 and counter, and there is now an API function to dynamically create new
7587 classes. This centralisation allows us to (a) plug a lot of the
7588 thread-safety problems that existed, and (b) makes it possible to clean
7589 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
7590 such data would previously have always leaked in application code and
7591 workarounds were in place to make the memory debugging turn a blind eye
7592 to it. Application code that doesn't use this new function will still
7593 leak as before, but their memory debugging output will announce it now
7594 rather than letting it slide.
7596 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
7597 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
7598 has a return value to indicate success or failure.
7601 *) Make it possible to replace the underlying "ERR" functions such that the
7602 global state (2 LHASH tables and 2 locks) is only used by the "default"
7603 implementation. This change also adds two functions to "get" and "set"
7604 the implementation prior to it being automatically set the first time
7605 any other ERR function takes place. Ie. an application can call "get",
7606 pass the return value to a module it has just loaded, and that module
7607 can call its own "set" function using that value. This means the
7608 module's "ERR" operations will use (and modify) the error state in the
7609 application and not in its own statically linked copy of OpenSSL code.
7612 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
7613 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
7614 the operation, and provides a more encapsulated way for external code
7615 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
7616 to use these functions rather than manually incrementing the counts.
7618 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
7621 *) Add EVP test program.
7624 *) Add symmetric cipher support to ENGINE. Expect the API to change!
7627 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
7628 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
7629 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
7630 These allow a CRL to be built without having to access X509_CRL fields
7631 directly. Modify 'ca' application to use new functions.
7634 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
7635 bug workarounds. Rollback attack detection is a security feature.
7636 The problem will only arise on OpenSSL servers when TLSv1 is not
7637 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
7638 Software authors not wanting to support TLSv1 will have special reasons
7639 for their choice and can explicitly enable this option.
7640 [Bodo Moeller, Lutz Jaenicke]
7642 *) Rationalise EVP so it can be extended: don't include a union of
7643 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
7644 (similar to those existing for EVP_CIPHER_CTX).
7649 EVP_MD_CTX_init(&md); /* new function call */
7650 EVP_DigestInit(&md, EVP_sha1());
7651 EVP_DigestUpdate(&md, in, len);
7652 EVP_DigestFinal(&md, out, NULL);
7653 EVP_MD_CTX_cleanup(&md); /* new function call */
7657 *) Make DES key schedule conform to the usual scheme, as well as
7658 correcting its structure. This means that calls to DES functions
7659 now have to pass a pointer to a des_key_schedule instead of a
7660 plain des_key_schedule (which was actually always a pointer
7663 des_key_schedule ks;
7665 des_set_key_checked(..., &ks);
7666 des_ncbc_encrypt(..., &ks, ...);
7668 (Note that a later change renames 'des_...' into 'DES_...'.)
7671 *) Initial reduction of linker bloat: the use of some functions, such as
7672 PEM causes large amounts of unused functions to be linked in due to
7673 poor organisation. For example pem_all.c contains every PEM function
7674 which has a knock on effect of linking in large amounts of (unused)
7675 ASN1 code. Grouping together similar functions and splitting unrelated
7676 functions prevents this.
7679 *) Cleanup of EVP macros.
7682 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
7683 correct _ecb suffix.
7686 *) Add initial OCSP responder support to ocsp application. The
7687 revocation information is handled using the text based index
7688 use by the ca application. The responder can either handle
7689 requests generated internally, supplied in files (for example
7690 via a CGI script) or using an internal minimal server.
7693 *) Add configuration choices to get zlib compression for TLS.
7696 *) Changes to Kerberos SSL for RFC 2712 compliance:
7697 1. Implemented real KerberosWrapper, instead of just using
7698 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
7699 2. Implemented optional authenticator field of KerberosWrapper.
7701 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
7702 and authenticator structs; see crypto/krb5/.
7704 Generalized Kerberos calls to support multiple Kerberos libraries.
7705 [Vern Staats <staatsvr@asc.hpc.mil>,
7706 Jeffrey Altman <jaltman@columbia.edu>
7707 via Richard Levitte]
7709 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
7710 already does with RSA. testdsa.h now has 'priv_key/pub_key'
7711 values for each of the key sizes rather than having just
7712 parameters (and 'speed' generating keys each time).
7715 *) Speed up EVP routines.
7718 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
7719 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
7720 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
7721 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
7723 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
7724 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
7725 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
7728 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
7730 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
7733 *) Added the OS2-EMX target.
7734 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
7736 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
7737 to support NCONF routines in extension code. New function CONF_set_nconf()
7738 to allow functions which take an NCONF to also handle the old LHASH
7739 structure: this means that the old CONF compatible routines can be
7740 retained (in particular wrt extensions) without having to duplicate the
7741 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
7744 *) Enhance the general user interface with mechanisms for inner control
7745 and with possibilities to have yes/no kind of prompts.
7748 *) Change all calls to low level digest routines in the library and
7749 applications to use EVP. Add missing calls to HMAC_cleanup() and
7750 don't assume HMAC_CTX can be copied using memcpy().
7751 [Verdon Walker <VWalker@novell.com>, Steve Henson]
7753 *) Add the possibility to control engines through control names but with
7754 arbitrary arguments instead of just a string.
7755 Change the key loaders to take a UI_METHOD instead of a callback
7756 function pointer. NOTE: this breaks binary compatibility with earlier
7757 versions of OpenSSL [engine].
7758 Adapt the nCipher code for these new conditions and add a card insertion
7762 *) Enhance the general user interface with mechanisms to better support
7763 dialog box interfaces, application-defined prompts, the possibility
7764 to use defaults (for example default passwords from somewhere else)
7765 and interrupts/cancellations.
7768 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
7769 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
7772 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
7773 tidy up some unnecessarily weird code in 'sk_new()').
7774 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
7776 *) Change the key loading routines for ENGINEs to use the same kind
7777 callback (pem_password_cb) as all other routines that need this
7781 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
7782 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
7783 than this minimum value is recommended.
7786 *) New random seeder for OpenVMS, using the system process statistics
7787 that are easily reachable.
7790 *) Windows apparently can't transparently handle global
7791 variables defined in DLLs. Initialisations such as:
7793 const ASN1_ITEM *it = &ASN1_INTEGER_it;
7795 won't compile. This is used by the any applications that need to
7796 declare their own ASN1 modules. This was fixed by adding the option
7797 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
7798 needed for static libraries under Win32.
7801 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
7802 setting of purpose and trust fields. New X509_STORE trust and
7803 purpose functions and tidy up setting in other SSL functions.
7806 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
7807 structure. These are inherited by X509_STORE_CTX when it is
7808 initialised. This allows various defaults to be set in the
7809 X509_STORE structure (such as flags for CRL checking and custom
7810 purpose or trust settings) for functions which only use X509_STORE_CTX
7811 internally such as S/MIME.
7813 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
7814 trust settings if they are not set in X509_STORE. This allows X509_STORE
7815 purposes and trust (in S/MIME for example) to override any set by default.
7817 Add command line options for CRL checking to smime, s_client and s_server
7821 *) Initial CRL based revocation checking. If the CRL checking flag(s)
7822 are set then the CRL is looked up in the X509_STORE structure and
7823 its validity and signature checked, then if the certificate is found
7824 in the CRL the verify fails with a revoked error.
7826 Various new CRL related callbacks added to X509_STORE_CTX structure.
7828 Command line options added to 'verify' application to support this.
7830 This needs some additional work, such as being able to handle multiple
7831 CRLs with different times, extension based lookup (rather than just
7832 by subject name) and ultimately more complete V2 CRL extension
7836 *) Add a general user interface API (crypto/ui/). This is designed
7837 to replace things like des_read_password and friends (backward
7838 compatibility functions using this new API are provided).
7839 The purpose is to remove prompting functions from the DES code
7840 section as well as provide for prompting through dialog boxes in
7841 a window system and the like.
7844 *) Add "ex_data" support to ENGINE so implementations can add state at a
7845 per-structure level rather than having to store it globally.
7848 *) Make it possible for ENGINE structures to be copied when retrieved by
7849 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
7850 This causes the "original" ENGINE structure to act like a template,
7851 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
7852 operational state can be localised to each ENGINE structure, despite the
7853 fact they all share the same "methods". New ENGINE structures returned in
7854 this case have no functional references and the return value is the single
7855 structural reference. This matches the single structural reference returned
7856 by ENGINE_by_id() normally, when it is incremented on the pre-existing
7860 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
7861 needs to match any other type at all we need to manually clear the
7865 *) Changes to the "openssl engine" utility to include;
7866 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
7867 about an ENGINE's available control commands.
7868 - executing control commands from command line arguments using the
7869 '-pre' and '-post' switches. '-post' is only used if '-t' is
7870 specified and the ENGINE is successfully initialised. The syntax for
7871 the individual commands are colon-separated, for example;
7872 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
7875 *) New dynamic control command support for ENGINEs. ENGINEs can now
7876 declare their own commands (numbers), names (strings), descriptions,
7877 and input types for run-time discovery by calling applications. A
7878 subset of these commands are implicitly classed as "executable"
7879 depending on their input type, and only these can be invoked through
7880 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
7881 can be based on user input, config files, etc). The distinction is
7882 that "executable" commands cannot return anything other than a boolean
7883 result and can only support numeric or string input, whereas some
7884 discoverable commands may only be for direct use through
7885 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
7886 pointers, or other custom uses. The "executable" commands are to
7887 support parameterisations of ENGINE behaviour that can be
7888 unambiguously defined by ENGINEs and used consistently across any
7889 OpenSSL-based application. Commands have been added to all the
7890 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
7891 control over shared-library paths without source code alterations.
7894 *) Changed all ENGINE implementations to dynamically allocate their
7895 ENGINEs rather than declaring them statically. Apart from this being
7896 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
7897 this also allows the implementations to compile without using the
7898 internal engine_int.h header.
7901 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
7902 'const' value. Any code that should be able to modify a RAND_METHOD
7903 should already have non-const pointers to it (ie. they should only
7904 modify their own ones).
7907 *) Made a variety of little tweaks to the ENGINE code.
7908 - "atalla" and "ubsec" string definitions were moved from header files
7909 to C code. "nuron" string definitions were placed in variables
7910 rather than hard-coded - allowing parameterisation of these values
7911 later on via ctrl() commands.
7912 - Removed unused "#if 0"'d code.
7913 - Fixed engine list iteration code so it uses ENGINE_free() to release
7914 structural references.
7915 - Constified the RAND_METHOD element of ENGINE structures.
7916 - Constified various get/set functions as appropriate and added
7917 missing functions (including a catch-all ENGINE_cpy that duplicates
7918 all ENGINE values onto a new ENGINE except reference counts/state).
7919 - Removed NULL parameter checks in get/set functions. Setting a method
7920 or function to NULL is a way of cancelling out a previously set
7921 value. Passing a NULL ENGINE parameter is just plain stupid anyway
7922 and doesn't justify the extra error symbols and code.
7923 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
7924 flags from engine_int.h to engine.h.
7925 - Changed prototypes for ENGINE handler functions (init(), finish(),
7926 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
7929 *) Implement binary inversion algorithm for BN_mod_inverse in addition
7930 to the algorithm using long division. The binary algorithm can be
7931 used only if the modulus is odd. On 32-bit systems, it is faster
7932 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
7933 roughly 5-15% for 256-bit moduli), so we use it only for moduli
7934 up to 450 bits. In 64-bit environments, the binary algorithm
7935 appears to be advantageous for much longer moduli; here we use it
7936 for moduli up to 2048 bits.
7939 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
7940 could not support the combine flag in choice fields.
7943 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
7944 extensions from a certificate request to the certificate.
7947 *) Allow multiple 'certopt' and 'nameopt' options to be separated
7948 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
7949 file: this allows the display of the certificate about to be
7950 signed to be customised, to allow certain fields to be included
7951 or excluded and extension details. The old system didn't display
7952 multicharacter strings properly, omitted fields not in the policy
7953 and couldn't display additional details such as extensions.
7956 *) Function EC_POINTs_mul for multiple scalar multiplication
7957 of an arbitrary number of elliptic curve points
7958 \sum scalars[i]*points[i],
7959 optionally including the generator defined for the EC_GROUP:
7960 scalar*generator + \sum scalars[i]*points[i].
7962 EC_POINT_mul is a simple wrapper function for the typical case
7963 that the point list has just one item (besides the optional
7967 *) First EC_METHODs for curves over GF(p):
7969 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
7970 operations and provides various method functions that can also
7971 operate with faster implementations of modular arithmetic.
7973 EC_GFp_mont_method() reuses most functions that are part of
7974 EC_GFp_simple_method, but uses Montgomery arithmetic.
7976 [Bodo Moeller; point addition and point doubling
7977 implementation directly derived from source code provided by
7978 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
7980 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
7981 crypto/ec/ec_lib.c):
7983 Curves are EC_GROUP objects (with an optional group generator)
7984 based on EC_METHODs that are built into the library.
7986 Points are EC_POINT objects based on EC_GROUP objects.
7988 Most of the framework would be able to handle curves over arbitrary
7989 finite fields, but as there are no obvious types for fields other
7990 than GF(p), some functions are limited to that for now.
7993 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
7994 that the file contains a complete HTTP response.
7997 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
7998 change the def and num file printf format specifier from "%-40sXXX"
7999 to "%-39s XXX". The latter will always guarantee a space after the
8000 field while the former will cause them to run together if the field
8001 is 40 of more characters long.
8004 *) Constify the cipher and digest 'method' functions and structures
8005 and modify related functions to take constant EVP_MD and EVP_CIPHER
8009 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
8010 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
8013 *) Modify EVP_Digest*() routines so they now return values. Although the
8014 internal software routines can never fail additional hardware versions
8018 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
8020 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
8021 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
8024 ERR_R_NESTED_ASN1_ERROR
8026 ERR_R_MISSING_ASN1_EOS
8027 were 4 .. 9, conflicting with
8028 ERR_LIB_RSA (= ERR_R_RSA_LIB)
8030 ERR_LIB_PEM (= ERR_R_PEM_LIB).
8031 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
8033 Add new error code 'ERR_R_INTERNAL_ERROR'.
8036 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
8040 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
8041 sets the subject name for a new request or supersedes the
8042 subject name in a given request. Formats that can be parsed are
8043 'CN=Some Name, OU=myOU, C=IT'
8045 'CN=Some Name/OU=myOU/C=IT'.
8047 Add options '-batch' and '-verbose' to 'openssl req'.
8048 [Massimiliano Pala <madwolf@hackmasters.net>]
8050 *) Introduce the possibility to access global variables through
8051 functions on platform were that's the best way to handle exporting
8052 global variables in shared libraries. To enable this functionality,
8053 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
8054 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
8055 is normally done by Configure or something similar).
8057 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
8058 in the source file (foo.c) like this:
8060 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
8061 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
8063 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
8064 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
8066 OPENSSL_DECLARE_GLOBAL(int,foo);
8067 #define foo OPENSSL_GLOBAL_REF(foo)
8068 OPENSSL_DECLARE_GLOBAL(double,bar);
8069 #define bar OPENSSL_GLOBAL_REF(bar)
8071 The #defines are very important, and therefore so is including the
8072 header file everywhere where the defined globals are used.
8074 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
8075 of ASN.1 items, but that structure is a bit different.
8077 The largest change is in util/mkdef.pl which has been enhanced with
8078 better and easier to understand logic to choose which symbols should
8079 go into the Windows .def files as well as a number of fixes and code
8080 cleanup (among others, algorithm keywords are now sorted
8081 lexicographically to avoid constant rewrites).
8084 *) In BN_div() keep a copy of the sign of 'num' before writing the
8085 result to 'rm' because if rm==num the value will be overwritten
8086 and produce the wrong result if 'num' is negative: this caused
8087 problems with BN_mod() and BN_nnmod().
8090 *) Function OCSP_request_verify(). This checks the signature on an
8091 OCSP request and verifies the signer certificate. The signer
8092 certificate is just checked for a generic purpose and OCSP request
8096 *) Add OCSP_check_validity() function to check the validity of OCSP
8097 responses. OCSP responses are prepared in real time and may only
8098 be a few seconds old. Simply checking that the current time lies
8099 between thisUpdate and nextUpdate max reject otherwise valid responses
8100 caused by either OCSP responder or client clock inaccuracy. Instead
8101 we allow thisUpdate and nextUpdate to fall within a certain period of
8102 the current time. The age of the response can also optionally be
8103 checked. Two new options -validity_period and -status_age added to
8107 *) If signature or public key algorithm is unrecognized print out its
8108 OID rather that just UNKNOWN.
8111 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
8112 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
8113 ID to be generated from the issuer certificate alone which can then be
8114 passed to OCSP_id_issuer_cmp().
8117 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
8118 ASN1 modules to export functions returning ASN1_ITEM pointers
8119 instead of the ASN1_ITEM structures themselves. This adds several
8120 new macros which allow the underlying ASN1 function/structure to
8121 be accessed transparently. As a result code should not use ASN1_ITEM
8122 references directly (such as &X509_it) but instead use the relevant
8123 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
8124 use of the new ASN1 code on platforms where exporting structures
8125 is problematical (for example in shared libraries) but exporting
8126 functions returning pointers to structures is not.
8129 *) Add support for overriding the generation of SSL/TLS session IDs.
8130 These callbacks can be registered either in an SSL_CTX or per SSL.
8131 The purpose of this is to allow applications to control, if they wish,
8132 the arbitrary values chosen for use as session IDs, particularly as it
8133 can be useful for session caching in multiple-server environments. A
8134 command-line switch for testing this (and any client code that wishes
8135 to use such a feature) has been added to "s_server".
8136 [Geoff Thorpe, Lutz Jaenicke]
8138 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
8139 of the form '#if defined(...) || defined(...) || ...' and
8140 '#if !defined(...) && !defined(...) && ...'. This also avoids
8141 the growing number of special cases it was previously handling.
8144 *) Make all configuration macros available for application by making
8145 sure they are available in opensslconf.h, by giving them names starting
8146 with "OPENSSL_" to avoid conflicts with other packages and by making
8147 sure e_os2.h will cover all platform-specific cases together with
8149 Additionally, it is now possible to define configuration/platform-
8150 specific names (called "system identities"). In the C code, these
8151 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
8152 macro with the name beginning with "OPENSSL_SYS_", which is determined
8153 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
8157 *) New option -set_serial to 'req' and 'x509' this allows the serial
8158 number to use to be specified on the command line. Previously self
8159 signed certificates were hard coded with serial number 0 and the
8160 CA options of 'x509' had to use a serial number in a file which was
8164 *) New options to 'ca' utility to support V2 CRL entry extensions.
8165 Currently CRL reason, invalidity date and hold instruction are
8166 supported. Add new CRL extensions to V3 code and some new objects.
8169 *) New function EVP_CIPHER_CTX_set_padding() this is used to
8170 disable standard block padding (aka PKCS#5 padding) in the EVP
8171 API, which was previously mandatory. This means that the data is
8172 not padded in any way and so the total length much be a multiple
8173 of the block size, otherwise an error occurs.
8176 *) Initial (incomplete) OCSP SSL support.
8179 *) New function OCSP_parse_url(). This splits up a URL into its host,
8180 port and path components: primarily to parse OCSP URLs. New -url
8181 option to ocsp utility.
8184 *) New nonce behavior. The return value of OCSP_check_nonce() now
8185 reflects the various checks performed. Applications can decide
8186 whether to tolerate certain situations such as an absent nonce
8187 in a response when one was present in a request: the ocsp application
8188 just prints out a warning. New function OCSP_add1_basic_nonce()
8189 this is to allow responders to include a nonce in a response even if
8190 the request is nonce-less.
8193 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
8194 skipped when using openssl x509 multiple times on a single input file,
8195 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
8198 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
8199 set string type: to handle setting ASN1_TIME structures. Fix ca
8200 utility to correctly initialize revocation date of CRLs.
8203 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
8204 the clients preferred ciphersuites and rather use its own preferences.
8205 Should help to work around M$ SGC (Server Gated Cryptography) bug in
8206 Internet Explorer by ensuring unchanged hash method during stepup.
8207 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
8210 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
8211 to aes and add a new 'exist' option to print out symbols that don't
8215 *) Additional options to ocsp utility to allow flags to be set and
8216 additional certificates supplied.
8219 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
8220 OCSP client a number of certificate to only verify the response
8224 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
8225 handle the new API. Currently only ECB, CBC modes supported. Add new
8228 Add TLS AES ciphersuites as described in RFC3268, "Advanced
8229 Encryption Standard (AES) Ciphersuites for Transport Layer
8230 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
8231 not enabled by default and were not part of the "ALL" ciphersuite
8232 alias because they were not yet official; they could be
8233 explicitly requested by specifying the "AESdraft" ciphersuite
8234 group alias. In the final release of OpenSSL 0.9.7, the group
8235 alias is called "AES" and is part of "ALL".)
8236 [Ben Laurie, Steve Henson, Bodo Moeller]
8238 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
8239 request to response.
8242 *) Functions for OCSP responders. OCSP_request_onereq_count(),
8243 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
8244 extract information from a certificate request. OCSP_response_create()
8245 creates a response and optionally adds a basic response structure.
8246 OCSP_basic_add1_status() adds a complete single response to a basic
8247 response and returns the OCSP_SINGLERESP structure just added (to allow
8248 extensions to be included for example). OCSP_basic_add1_cert() adds a
8249 certificate to a basic response and OCSP_basic_sign() signs a basic
8250 response with various flags. New helper functions ASN1_TIME_check()
8251 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
8252 (converts ASN1_TIME to GeneralizedTime).
8255 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
8256 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
8257 structure from a certificate. X509_pubkey_digest() digests the public_key
8258 contents: this is used in various key identifiers.
8261 *) Make sk_sort() tolerate a NULL argument.
8262 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
8264 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
8265 passed by the function are trusted implicitly. If any of them signed the
8266 response then it is assumed to be valid and is not verified.
8269 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
8270 to data. This was previously part of the PKCS7 ASN1 code. This
8271 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
8272 [Steve Henson, reported by Kenneth R. Robinette
8273 <support@securenetterm.com>]
8275 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
8276 routines: without these tracing memory leaks is very painful.
8277 Fix leaks in PKCS12 and PKCS7 routines.
8280 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
8281 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
8282 effectively meant GeneralizedTime would never be used. Now it
8283 is initialised to -1 but X509_time_adj() now has to check the value
8284 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
8285 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
8286 [Steve Henson, reported by Kenneth R. Robinette
8287 <support@securenetterm.com>]
8289 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
8290 result in a zero length in the ASN1_INTEGER structure which was
8291 not consistent with the structure when d2i_ASN1_INTEGER() was used
8292 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
8293 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
8294 where it did not print out a minus for negative ASN1_INTEGER.
8297 *) Add summary printout to ocsp utility. The various functions which
8298 convert status values to strings have been renamed to:
8299 OCSP_response_status_str(), OCSP_cert_status_str() and
8300 OCSP_crl_reason_str() and are no longer static. New options
8301 to verify nonce values and to disable verification. OCSP response
8302 printout format cleaned up.
8305 *) Add additional OCSP certificate checks. These are those specified
8306 in RFC2560. This consists of two separate checks: the CA of the
8307 certificate being checked must either be the OCSP signer certificate
8308 or the issuer of the OCSP signer certificate. In the latter case the
8309 OCSP signer certificate must contain the OCSP signing extended key
8310 usage. This check is performed by attempting to match the OCSP
8311 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
8312 in the OCSP_CERTID structures of the response.
8315 *) Initial OCSP certificate verification added to OCSP_basic_verify()
8316 and related routines. This uses the standard OpenSSL certificate
8317 verify routines to perform initial checks (just CA validity) and
8318 to obtain the certificate chain. Then additional checks will be
8319 performed on the chain. Currently the root CA is checked to see
8320 if it is explicitly trusted for OCSP signing. This is used to set
8321 a root CA as a global signing root: that is any certificate that
8322 chains to that CA is an acceptable OCSP signing certificate.
8325 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
8326 extensions from a separate configuration file.
8327 As when reading extensions from the main configuration file,
8328 the '-extensions ...' option may be used for specifying the
8330 [Massimiliano Pala <madwolf@comune.modena.it>]
8332 *) New OCSP utility. Allows OCSP requests to be generated or
8333 read. The request can be sent to a responder and the output
8334 parsed, outputed or printed in text form. Not complete yet:
8335 still needs to check the OCSP response validity.
8338 *) New subcommands for 'openssl ca':
8339 'openssl ca -status <serial>' prints the status of the cert with
8340 the given serial number (according to the index file).
8341 'openssl ca -updatedb' updates the expiry status of certificates
8343 [Massimiliano Pala <madwolf@comune.modena.it>]
8345 *) New '-newreq-nodes' command option to CA.pl. This is like
8346 '-newreq', but calls 'openssl req' with the '-nodes' option
8347 so that the resulting key is not encrypted.
8348 [Damien Miller <djm@mindrot.org>]
8350 *) New configuration for the GNU Hurd.
8351 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
8353 *) Initial code to implement OCSP basic response verify. This
8354 is currently incomplete. Currently just finds the signer's
8355 certificate and verifies the signature on the response.
8358 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
8359 value of OPENSSLDIR. This is available via the new '-d' option
8360 to 'openssl version', and is also included in 'openssl version -a'.
8363 *) Allowing defining memory allocation callbacks that will be given
8364 file name and line number information in additional arguments
8365 (a const char* and an int). The basic functionality remains, as
8366 well as the original possibility to just replace malloc(),
8367 realloc() and free() by functions that do not know about these
8368 additional arguments. To register and find out the current
8369 settings for extended allocation functions, the following
8370 functions are provided:
8372 CRYPTO_set_mem_ex_functions
8373 CRYPTO_set_locked_mem_ex_functions
8374 CRYPTO_get_mem_ex_functions
8375 CRYPTO_get_locked_mem_ex_functions
8377 These work the same way as CRYPTO_set_mem_functions and friends.
8378 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
8379 extended allocation function is enabled.
8380 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
8381 a conventional allocation function is enabled.
8382 [Richard Levitte, Bodo Moeller]
8384 *) Finish off removing the remaining LHASH function pointer casts.
8385 There should no longer be any prototype-casting required when using
8386 the LHASH abstraction, and any casts that remain are "bugs". See
8387 the callback types and macros at the head of lhash.h for details
8388 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
8391 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
8392 If /dev/[u]random devices are not available or do not return enough
8393 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
8395 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
8396 /etc/entropy will be queried once each in this sequence, querying stops
8397 when enough entropy was collected without querying more sockets.
8400 *) Change the Unix RAND_poll() variant to be able to poll several
8401 random devices, as specified by DEVRANDOM, until a sufficient amount
8402 of data has been collected. We spend at most 10 ms on each file
8403 (select timeout) and read in non-blocking mode. DEVRANDOM now
8404 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
8405 (previously it was just the string "/dev/urandom"), so on typical
8406 platforms the 10 ms delay will never occur.
8407 Also separate out the Unix variant to its own file, rand_unix.c.
8408 For VMS, there's a currently-empty rand_vms.c.
8411 *) Move OCSP client related routines to ocsp_cl.c. These
8412 provide utility functions which an application needing
8413 to issue a request to an OCSP responder and analyse the
8414 response will typically need: as opposed to those which an
8415 OCSP responder itself would need which will be added later.
8417 OCSP_request_sign() signs an OCSP request with an API similar
8418 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
8419 response. OCSP_response_get1_basic() extracts basic response
8420 from response. OCSP_resp_find_status(): finds and extracts status
8421 information from an OCSP_CERTID structure (which will be created
8422 when the request structure is built). These are built from lower
8423 level functions which work on OCSP_SINGLERESP structures but
8424 won't normally be used unless the application wishes to examine
8425 extensions in the OCSP response for example.
8427 Replace nonce routines with a pair of functions.
8428 OCSP_request_add1_nonce() adds a nonce value and optionally
8429 generates a random value. OCSP_check_nonce() checks the
8430 validity of the nonce in an OCSP response.
8433 *) Change function OCSP_request_add() to OCSP_request_add0_id().
8434 This doesn't copy the supplied OCSP_CERTID and avoids the
8435 need to free up the newly created id. Change return type
8436 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
8437 This can then be used to add extensions to the request.
8438 Deleted OCSP_request_new(), since most of its functionality
8439 is now in OCSP_REQUEST_new() (and the case insensitive name
8440 clash) apart from the ability to set the request name which
8441 will be added elsewhere.
8444 *) Update OCSP API. Remove obsolete extensions argument from
8445 various functions. Extensions are now handled using the new
8446 OCSP extension code. New simple OCSP HTTP function which
8447 can be used to send requests and parse the response.
8450 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
8451 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
8452 uses the special reorder version of SET OF to sort the attributes
8453 and reorder them to match the encoded order. This resolves a long
8454 standing problem: a verify on a PKCS7 structure just after signing
8455 it used to fail because the attribute order did not match the
8456 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
8457 it uses the received order. This is necessary to tolerate some broken
8458 software that does not order SET OF. This is handled by encoding
8459 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
8460 to produce the required SET OF.
8463 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
8464 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
8465 files to get correct declarations of the ASN.1 item variables.
8468 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
8469 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
8470 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
8471 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
8472 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
8473 ASN1_ITEM and no wrapper functions.
8476 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
8477 replace the old function pointer based I/O routines. Change most of
8478 the *_d2i_bio() and *_d2i_fp() functions to use these.
8481 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
8482 lines, recognize more "algorithms" that can be deselected, and make
8483 it complain about algorithm deselection that isn't recognised.
8486 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
8487 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
8488 to use new functions. Add NO_ASN1_OLD which can be set to remove
8489 some old style ASN1 functions: this can be used to determine if old
8490 code will still work when these eventually go away.
8493 *) New extension functions for OCSP structures, these follow the
8494 same conventions as certificates and CRLs.
8497 *) New function X509V3_add1_i2d(). This automatically encodes and
8498 adds an extension. Its behaviour can be customised with various
8499 flags to append, replace or delete. Various wrappers added for
8500 certificates and CRLs.
8503 *) Fix to avoid calling the underlying ASN1 print routine when
8504 an extension cannot be parsed. Correct a typo in the
8505 OCSP_SERVICELOC extension. Tidy up print OCSP format.
8508 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
8509 entries for variables.
8512 *) Add functionality to apps/openssl.c for detecting locking
8513 problems: As the program is single-threaded, all we have
8514 to do is register a locking callback using an array for
8515 storing which locks are currently held by the program.
8518 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
8519 SSL_get_ex_data_X509_STORE_idx(), which is used in
8520 ssl_verify_cert_chain() and thus can be called at any time
8521 during TLS/SSL handshakes so that thread-safety is essential.
8522 Unfortunately, the ex_data design is not at all suited
8523 for multi-threaded use, so it probably should be abolished.
8526 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
8527 [Broadcom, tweaked and integrated by Geoff Thorpe]
8529 *) Move common extension printing code to new function
8530 X509V3_print_extensions(). Reorganise OCSP print routines and
8531 implement some needed OCSP ASN1 functions. Add OCSP extensions.
8534 *) New function X509_signature_print() to remove duplication in some
8538 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
8539 set (this was treated exactly the same as SET OF previously). This
8540 is used to reorder the STACK representing the structure to match the
8541 encoding. This will be used to get round a problem where a PKCS7
8542 structure which was signed could not be verified because the STACK
8543 order did not reflect the encoded order.
8546 *) Reimplement the OCSP ASN1 module using the new code.
8549 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
8550 for its ASN1 operations. The old style function pointers still exist
8551 for now but they will eventually go away.
8554 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
8555 completely replaces the old ASN1 functionality with a table driven
8556 encoder and decoder which interprets an ASN1_ITEM structure describing
8557 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
8558 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
8559 has also been converted to the new form.
8562 *) Change BN_mod_exp_recp so that negative moduli are tolerated
8563 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
8564 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
8565 for negative moduli.
8568 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
8569 of not touching the result's sign bit.
8572 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
8576 *) Changed the LHASH code to use prototypes for callbacks, and created
8577 macros to declare and implement thin (optionally static) functions
8578 that provide type-safety and avoid function pointer casting for the
8579 type-specific callbacks.
8582 *) Added Kerberos Cipher Suites to be used with TLS, as written in
8584 [Veers Staats <staatsvr@asc.hpc.mil>,
8585 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
8587 *) Reformat the FAQ so the different questions and answers can be divided
8588 in sections depending on the subject.
8591 *) Have the zlib compression code load ZLIB.DLL dynamically under
8595 *) New function BN_mod_sqrt for computing square roots modulo a prime
8596 (using the probabilistic Tonelli-Shanks algorithm unless
8597 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
8598 be handled deterministically).
8599 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
8601 *) Make BN_mod_inverse faster by explicitly handling small quotients
8602 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
8603 512 bits], about 30% for larger ones [1024 or 2048 bits].)
8606 *) New function BN_kronecker.
8609 *) Fix BN_gcd so that it works on negative inputs; the result is
8610 positive unless both parameters are zero.
8611 Previously something reasonably close to an infinite loop was
8612 possible because numbers could be growing instead of shrinking
8613 in the implementation of Euclid's algorithm.
8616 *) Fix BN_is_word() and BN_is_one() macros to take into account the
8617 sign of the number in question.
8619 Fix BN_is_word(a,w) to work correctly for w == 0.
8621 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
8622 because its test if the absolute value of 'a' equals 'w'.
8623 Note that BN_abs_is_word does *not* handle w == 0 reliably;
8624 it exists mostly for use in the implementations of BN_is_zero(),
8625 BN_is_one(), and BN_is_word().
8628 *) New function BN_swap.
8631 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
8632 the exponentiation functions are more likely to produce reasonable
8633 results on negative inputs.
8636 *) Change BN_mod_mul so that the result is always non-negative.
8637 Previously, it could be negative if one of the factors was negative;
8638 I don't think anyone really wanted that behaviour.
8641 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
8642 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
8643 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
8644 and add new functions:
8653 BN_mod_lshift1_quick
8657 These functions always generate non-negative results.
8659 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
8660 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
8662 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
8663 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
8664 be reduced modulo m.
8665 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
8668 The following entry accidentally appeared in the CHANGES file
8669 distributed with OpenSSL 0.9.7. The modifications described in
8670 it do *not* apply to OpenSSL 0.9.7.
8672 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
8673 was actually never needed) and in BN_mul(). The removal in BN_mul()
8674 required a small change in bn_mul_part_recursive() and the addition
8675 of the functions bn_cmp_part_words(), bn_sub_part_words() and
8676 bn_add_part_words(), which do the same thing as bn_cmp_words(),
8677 bn_sub_words() and bn_add_words() except they take arrays with
8682 *) In 'openssl passwd', verify passwords read from the terminal
8683 unless the '-salt' option is used (which usually means that
8684 verification would just waste user's time since the resulting
8685 hash is going to be compared with some given password hash)
8686 or the new '-noverify' option is used.
8688 This is an incompatible change, but it does not affect
8689 non-interactive use of 'openssl passwd' (passwords on the command
8690 line, '-stdin' option, '-in ...' option) and thus should not
8694 *) Remove all references to RSAref, since there's no more need for it.
8697 *) Make DSO load along a path given through an environment variable
8698 (SHLIB_PATH) with shl_load().
8701 *) Constify the ENGINE code as a result of BIGNUM constification.
8702 Also constify the RSA code and most things related to it. In a
8703 few places, most notable in the depth of the ASN.1 code, ugly
8704 casts back to non-const were required (to be solved at a later
8708 *) Make it so the openssl application has all engines loaded by default.
8711 *) Constify the BIGNUM routines a little more.
8714 *) Add the following functions:
8716 ENGINE_load_cswift()
8718 ENGINE_load_atalla()
8720 ENGINE_load_builtin_engines()
8722 That way, an application can itself choose if external engines that
8723 are built-in in OpenSSL shall ever be used or not. The benefit is
8724 that applications won't have to be linked with libdl or other dso
8725 libraries unless it's really needed.
8727 Changed 'openssl engine' to load all engines on demand.
8728 Changed the engine header files to avoid the duplication of some
8729 declarations (they differed!).
8732 *) 'openssl engine' can now list capabilities.
8735 *) Better error reporting in 'openssl engine'.
8738 *) Never call load_dh_param(NULL) in s_server.
8741 *) Add engine application. It can currently list engines by name and
8742 identity, and test if they are actually available.
8745 *) Improve RPM specification file by forcing symbolic linking and making
8746 sure the installed documentation is also owned by root.root.
8747 [Damien Miller <djm@mindrot.org>]
8749 *) Give the OpenSSL applications more possibilities to make use of
8750 keys (public as well as private) handled by engines.
8753 *) Add OCSP code that comes from CertCo.
8756 *) Add VMS support for the Rijndael code.
8759 *) Added untested support for Nuron crypto accelerator.
8762 *) Add support for external cryptographic devices. This code was
8763 previously distributed separately as the "engine" branch.
8764 [Geoff Thorpe, Richard Levitte]
8766 *) Rework the filename-translation in the DSO code. It is now possible to
8767 have far greater control over how a "name" is turned into a filename
8768 depending on the operating environment and any oddities about the
8769 different shared library filenames on each system.
8772 *) Support threads on FreeBSD-elf in Configure.
8775 *) Fix for SHA1 assembly problem with MASM: it produces
8776 warnings about corrupt line number information when assembling
8777 with debugging information. This is caused by the overlapping
8779 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
8782 NCONF_get_number() has no error checking at all. As a replacement,
8783 NCONF_get_number_e() is defined (_e for "error checking") and is
8784 promoted strongly. The old NCONF_get_number is kept around for
8785 binary backward compatibility.
8786 Make it possible for methods to load from something other than a BIO,
8787 by providing a function pointer that is given a name instead of a BIO.
8788 For example, this could be used to load configuration data from an
8792 *) Fix for non blocking accept BIOs. Added new I/O special reason
8793 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
8794 with non blocking I/O was not possible because no retry code was
8795 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
8799 *) Added the beginnings of Rijndael support.
8802 *) Fix for bug in DirectoryString mask setting. Add support for
8803 X509_NAME_print_ex() in 'req' and X509_print_ex() function
8804 to allow certificate printing to more controllable, additional
8805 'certopt' option to 'x509' to allow new printing options to be
8809 *) Clean old EAY MD5 hack from e_os.h.
8812 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
8814 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
8815 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
8816 [Joe Orton, Steve Henson]
8818 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
8820 *) Fix additional bug revealed by the NISCC test suite:
8822 Stop bug triggering large recursion when presented with
8823 certain ASN.1 tags (CVE-2003-0851)
8826 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
8828 *) Fix various bugs revealed by running the NISCC test suite:
8830 Stop out of bounds reads in the ASN1 code when presented with
8831 invalid tags (CVE-2003-0543 and CVE-2003-0544).
8833 If verify callback ignores invalid public key errors don't try to check
8834 certificate signature with the NULL public key.
8838 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
8839 if the server requested one: as stated in TLS 1.0 and SSL 3.0
8843 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
8844 extra data after the compression methods not only for TLS 1.0
8845 but also for SSL 3.0 (as required by the specification).
8846 [Bodo Moeller; problem pointed out by Matthias Loepfe]
8848 *) Change X509_certificate_type() to mark the key as exported/exportable
8849 when it's 512 *bits* long, not 512 bytes.
8852 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
8854 *) Countermeasure against the Klima-Pokorny-Rosa extension of
8855 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
8856 a protocol version number mismatch like a decryption error
8857 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
8860 *) Turn on RSA blinding by default in the default implementation
8861 to avoid a timing attack. Applications that don't want it can call
8862 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
8863 They would be ill-advised to do so in most cases.
8864 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
8866 *) Change RSA blinding code so that it works when the PRNG is not
8867 seeded (in this case, the secret RSA exponent is abused as
8868 an unpredictable seed -- if it is not unpredictable, there
8869 is no point in blinding anyway). Make RSA blinding thread-safe
8870 by remembering the creator's thread ID in rsa->blinding and
8871 having all other threads use local one-time blinding factors
8872 (this requires more computation than sharing rsa->blinding, but
8873 avoids excessive locking; and if an RSA object is not shared
8874 between threads, blinding will still be very fast).
8877 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
8879 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
8880 via timing by performing a MAC computation even if incorrect
8881 block cipher padding has been found. This is a countermeasure
8882 against active attacks where the attacker has to distinguish
8883 between bad padding and a MAC verification error. (CVE-2003-0078)
8885 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
8886 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
8887 Martin Vuagnoux (EPFL, Ilion)]
8889 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
8891 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
8892 memory from it's contents. This is done with a counter that will
8893 place alternating values in each byte. This can be used to solve
8894 two issues: 1) the removal of calls to memset() by highly optimizing
8895 compilers, and 2) cleansing with other values than 0, since those can
8896 be read through on certain media, for example a swap space on disk.
8899 *) Bugfix: client side session caching did not work with external caching,
8900 because the session->cipher setting was not restored when reloading
8901 from the external cache. This problem was masked, when
8902 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
8903 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
8906 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
8907 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
8908 [Zeev Lieber <zeev-l@yahoo.com>]
8910 *) Undo an undocumented change introduced in 0.9.6e which caused
8911 repeated calls to OpenSSL_add_all_ciphers() and
8912 OpenSSL_add_all_digests() to be ignored, even after calling
8916 *) Change the default configuration reader to deal with last line not
8917 being properly terminated.
8920 *) Change X509_NAME_cmp() so it applies the special rules on handling
8921 DN values that are of type PrintableString, as well as RDNs of type
8922 emailAddress where the value has the type ia5String.
8923 [stefank@valicert.com via Richard Levitte]
8925 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
8926 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
8927 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
8928 the bitwise-OR of the two for use by the majority of applications
8929 wanting this behaviour, and update the docs. The documented
8930 behaviour and actual behaviour were inconsistent and had been
8931 changing anyway, so this is more a bug-fix than a behavioural
8933 [Geoff Thorpe, diagnosed by Nadav Har'El]
8935 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
8936 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
8939 *) Fix initialization code race conditions in
8940 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
8941 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
8942 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
8943 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
8944 ssl2_get_cipher_by_char(),
8945 ssl3_get_cipher_by_char().
8946 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
8948 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
8949 the cached sessions are flushed, as the remove_cb() might use ex_data
8950 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
8951 (see [openssl.org #212]).
8952 [Geoff Thorpe, Lutz Jaenicke]
8954 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
8955 length, instead of the encoding length to d2i_ASN1_OBJECT.
8958 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
8960 *) [In 0.9.6g-engine release:]
8961 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
8962 [Lynn Gazis <lgazis@rainbow.com>]
8964 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
8966 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
8967 and get fix the header length calculation.
8968 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
8969 Alon Kantor <alonk@checkpoint.com> (and others),
8972 *) Use proper error handling instead of 'assertions' in buffer
8973 overflow checks added in 0.9.6e. This prevents DoS (the
8974 assertions could call abort()).
8975 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
8977 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
8979 *) Add various sanity checks to asn1_get_length() to reject
8980 the ASN1 length bytes if they exceed sizeof(long), will appear
8981 negative or the content length exceeds the length of the
8983 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
8985 *) Fix cipher selection routines: ciphers without encryption had no flags
8986 for the cipher strength set and where therefore not handled correctly
8987 by the selection routines (PR #130).
8990 *) Fix EVP_dsa_sha macro.
8994 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
8995 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
8996 that was added in OpenSSL 0.9.6d.
8998 As the countermeasure turned out to be incompatible with some
8999 broken SSL implementations, the new option is part of SSL_OP_ALL.
9000 SSL_OP_ALL is usually employed when compatibility with weird SSL
9001 implementations is desired (e.g. '-bugs' option to 's_client' and
9002 's_server'), so the new option is automatically set in many
9006 *) Changes in security patch:
9008 Changes marked "(CHATS)" were sponsored by the Defense Advanced
9009 Research Projects Agency (DARPA) and Air Force Research Laboratory,
9010 Air Force Materiel Command, USAF, under agreement number
9013 *) Add various sanity checks to asn1_get_length() to reject
9014 the ASN1 length bytes if they exceed sizeof(long), will appear
9015 negative or the content length exceeds the length of the
9016 supplied buffer. (CVE-2002-0659)
9017 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9019 *) Assertions for various potential buffer overflows, not known to
9021 [Ben Laurie (CHATS)]
9023 *) Various temporary buffers to hold ASCII versions of integers were
9024 too small for 64 bit platforms. (CVE-2002-0655)
9025 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
9027 *) Remote buffer overflow in SSL3 protocol - an attacker could
9028 supply an oversized session ID to a client. (CVE-2002-0656)
9029 [Ben Laurie (CHATS)]
9031 *) Remote buffer overflow in SSL2 protocol - an attacker could
9032 supply an oversized client master key. (CVE-2002-0656)
9033 [Ben Laurie (CHATS)]
9035 Changes between 0.9.6c and 0.9.6d [9 May 2002]
9037 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
9038 encoded as NULL) with id-dsa-with-sha1.
9039 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
9041 *) Check various X509_...() return values in apps/req.c.
9042 [Nils Larsch <nla@trustcenter.de>]
9044 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
9045 an end-of-file condition would erroneously be flagged, when the CRLF
9046 was just at the end of a processed block. The bug was discovered when
9047 processing data through a buffering memory BIO handing the data to a
9048 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
9049 <ptsekov@syntrex.com> and Nedelcho Stanev.
9052 *) Implement a countermeasure against a vulnerability recently found
9053 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
9054 before application data chunks to avoid the use of known IVs
9055 with data potentially chosen by the attacker.
9058 *) Fix length checks in ssl3_get_client_hello().
9061 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
9062 to prevent ssl3_read_internal() from incorrectly assuming that
9063 ssl3_read_bytes() found application data while handshake
9064 processing was enabled when in fact s->s3->in_read_app_data was
9065 merely automatically cleared during the initial handshake.
9066 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
9068 *) Fix object definitions for Private and Enterprise: they were not
9069 recognized in their shortname (=lowercase) representation. Extend
9070 obj_dat.pl to issue an error when using undefined keywords instead
9071 of silently ignoring the problem (Svenning Sorensen
9072 <sss@sss.dnsalias.net>).
9075 *) Fix DH_generate_parameters() so that it works for 'non-standard'
9076 generators, i.e. generators other than 2 and 5. (Previously, the
9077 code did not properly initialise the 'add' and 'rem' values to
9078 BN_generate_prime().)
9080 In the new general case, we do not insist that 'generator' is
9081 actually a primitive root: This requirement is rather pointless;
9082 a generator of the order-q subgroup is just as good, if not
9086 *) Map new X509 verification errors to alerts. Discovered and submitted by
9087 Tom Wu <tom@arcot.com>.
9090 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
9091 returning non-zero before the data has been completely received
9092 when using non-blocking I/O.
9093 [Bodo Moeller; problem pointed out by John Hughes]
9095 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
9096 [Ben Laurie, Lutz Jaenicke]
9098 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
9099 Yoram Zahavi <YoramZ@gilian.com>).
9102 *) Add information about CygWin 1.3 and on, and preserve proper
9103 configuration for the versions before that.
9104 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
9106 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
9107 check whether we deal with a copy of a session and do not delete from
9108 the cache in this case. Problem reported by "Izhar Shoshani Levi"
9109 <izhar@checkpoint.com>.
9112 *) Do not store session data into the internal session cache, if it
9113 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
9114 flag is set). Proposed by Aslam <aslam@funk.com>.
9117 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
9121 *) [In 0.9.6d-engine release:]
9122 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
9123 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
9125 *) Add the configuration target linux-s390x.
9126 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
9128 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
9129 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
9130 variable as an indication that a ClientHello message has been
9131 received. As the flag value will be lost between multiple
9132 invocations of ssl3_accept when using non-blocking I/O, the
9133 function may not be aware that a handshake has actually taken
9134 place, thus preventing a new session from being added to the
9137 To avoid this problem, we now set s->new_session to 2 instead of
9138 using a local variable.
9139 [Lutz Jaenicke, Bodo Moeller]
9141 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
9142 if the SSL_R_LENGTH_MISMATCH error is detected.
9143 [Geoff Thorpe, Bodo Moeller]
9145 *) New 'shared_ldflag' column in Configure platform table.
9148 *) Fix EVP_CIPHER_mode macro.
9149 ["Dan S. Camper" <dan@bti.net>]
9151 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
9152 type, we must throw them away by setting rr->length to 0.
9153 [D P Chang <dpc@qualys.com>]
9155 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
9157 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
9158 <Dominikus.Scherkl@biodata.com>. (The previous implementation
9159 worked incorrectly for those cases where range = 10..._2 and
9160 3*range is two bits longer than range.)
9163 *) Only add signing time to PKCS7 structures if it is not already
9167 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
9168 OBJ_ld_ce should be OBJ_id_ce.
9169 Also some ip-pda OIDs in crypto/objects/objects.txt were
9170 incorrect (cf. RFC 3039).
9171 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
9173 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
9174 returns early because it has nothing to do.
9175 [Andy Schneider <andy.schneider@bjss.co.uk>]
9177 *) [In 0.9.6c-engine release:]
9178 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
9179 [Andy Schneider <andy.schneider@bjss.co.uk>]
9181 *) [In 0.9.6c-engine release:]
9182 Add support for Cryptographic Appliance's keyserver technology.
9183 (Use engine 'keyclient')
9184 [Cryptographic Appliances and Geoff Thorpe]
9186 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
9187 is called via tools/c89.sh because arguments have to be
9188 rearranged (all '-L' options must appear before the first object
9190 [Richard Shapiro <rshapiro@abinitio.com>]
9192 *) [In 0.9.6c-engine release:]
9193 Add support for Broadcom crypto accelerator cards, backported
9195 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
9197 *) [In 0.9.6c-engine release:]
9198 Add support for SureWare crypto accelerator cards from
9199 Baltimore Technologies. (Use engine 'sureware')
9200 [Baltimore Technologies and Mark Cox]
9202 *) [In 0.9.6c-engine release:]
9203 Add support for crypto accelerator cards from Accelerated
9204 Encryption Processing, www.aep.ie. (Use engine 'aep')
9205 [AEP Inc. and Mark Cox]
9207 *) Add a configuration entry for gcc on UnixWare.
9208 [Gary Benson <gbenson@redhat.com>]
9210 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
9211 messages are stored in a single piece (fixed-length part and
9212 variable-length part combined) and fix various bugs found on the way.
9215 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
9216 instead. BIO_gethostbyname() does not know what timeouts are
9217 appropriate, so entries would stay in cache even when they have
9219 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
9221 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
9222 faced with a pathologically small ClientHello fragment that does
9223 not contain client_version: Instead of aborting with an error,
9224 simply choose the highest available protocol version (i.e.,
9225 TLS 1.0 unless it is disabled). In practice, ClientHello
9226 messages are never sent like this, but this change gives us
9227 strictly correct behaviour at least for TLS.
9230 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
9231 never resets s->method to s->ctx->method when called from within
9232 one of the SSL handshake functions.
9233 [Bodo Moeller; problem pointed out by Niko Baric]
9235 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
9236 (sent using the client's version number) if client_version is
9237 smaller than the protocol version in use. Also change
9238 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
9239 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
9240 the client will at least see that alert.
9243 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
9247 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
9248 client receives HelloRequest while in a handshake.
9249 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
9251 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
9252 should end in 'break', not 'goto end' which circumvents various
9253 cleanups done in state SSL_ST_OK. But session related stuff
9254 must be disabled for SSL_ST_OK in the case that we just sent a
9257 Also avoid some overhead by not calling ssl_init_wbio_buffer()
9258 before just sending a HelloRequest.
9259 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
9261 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
9262 reveal whether illegal block cipher padding was found or a MAC
9263 verification error occurred. (Neither SSLerr() codes nor alerts
9264 are directly visible to potential attackers, but the information
9265 may leak via logfiles.)
9267 Similar changes are not required for the SSL 2.0 implementation
9268 because the number of padding bytes is sent in clear for SSL 2.0,
9269 and the extra bytes are just ignored. However ssl/s2_pkt.c
9270 failed to verify that the purported number of padding bytes is in
9274 *) Add OpenUNIX-8 support including shared libraries
9275 (Boyd Lynn Gerber <gerberb@zenez.com>).
9278 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
9279 'wristwatch attack' using huge encoding parameters (cf.
9280 James H. Manger's CRYPTO 2001 paper). Note that the
9281 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
9282 encoding parameters and hence was not vulnerable.
9285 *) BN_sqr() bug fix.
9286 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
9288 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
9289 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
9290 followed by modular reduction.
9291 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
9293 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
9294 equivalent based on BN_pseudo_rand() instead of BN_rand().
9297 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
9298 This function was broken, as the check for a new client hello message
9299 to handle SGC did not allow these large messages.
9300 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
9303 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
9306 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
9307 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
9310 *) Rework the configuration and shared library support for Tru64 Unix.
9311 The configuration part makes use of modern compiler features and
9312 still retains old compiler behavior for those that run older versions
9313 of the OS. The shared library support part includes a variant that
9314 uses the RPATH feature, and is available through the special
9315 configuration target "alpha-cc-rpath", which will never be selected
9317 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
9319 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
9320 with the same message size as in ssl3_get_certificate_request().
9321 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
9322 messages might inadvertently be reject as too long.
9323 [Petr Lampa <lampa@fee.vutbr.cz>]
9325 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
9328 *) Modified SSL library such that the verify_callback that has been set
9329 specificly for an SSL object with SSL_set_verify() is actually being
9330 used. Before the change, a verify_callback set with this function was
9331 ignored and the verify_callback() set in the SSL_CTX at the time of
9332 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
9333 to allow the necessary settings.
9336 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
9337 explicitly to NULL, as at least on Solaris 8 this seems not always to be
9338 done automatically (in contradiction to the requirements of the C
9339 standard). This made problems when used from OpenSSH.
9342 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
9343 dh->length and always used
9345 BN_rand_range(priv_key, dh->p).
9347 BN_rand_range() is not necessary for Diffie-Hellman, and this
9348 specific range makes Diffie-Hellman unnecessarily inefficient if
9349 dh->length (recommended exponent length) is much smaller than the
9350 length of dh->p. We could use BN_rand_range() if the order of
9351 the subgroup was stored in the DH structure, but we only have
9356 BN_rand(priv_key, l, ...)
9358 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
9364 RSA_eay_public_encrypt
9365 RSA_eay_private_decrypt
9366 RSA_eay_private_encrypt (signing)
9367 RSA_eay_public_decrypt (signature verification)
9369 (default implementations for RSA_public_encrypt,
9370 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
9371 always reject numbers >= n.
9374 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
9375 to synchronize access to 'locking_thread'. This is necessary on
9376 systems where access to 'locking_thread' (an 'unsigned long'
9377 variable) is not atomic.
9380 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
9381 *before* setting the 'crypto_lock_rand' flag. The previous code had
9382 a race condition if 0 is a valid thread ID.
9383 [Travis Vitek <vitek@roguewave.com>]
9385 *) Add support for shared libraries under Irix.
9386 [Albert Chin-A-Young <china@thewrittenword.com>]
9388 *) Add configuration option to build on Linux on both big-endian and
9390 [Ralf Baechle <ralf@uni-koblenz.de>]
9392 *) Add the possibility to create shared libraries on HP-UX.
9395 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
9397 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
9398 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
9399 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
9400 PRNG state recovery was possible based on the output of
9401 one PRNG request appropriately sized to gain knowledge on
9402 'md' followed by enough consecutive 1-byte PRNG requests
9403 to traverse all of 'state'.
9405 1. When updating 'md_local' (the current thread's copy of 'md')
9406 during PRNG output generation, hash all of the previous
9407 'md_local' value, not just the half used for PRNG output.
9409 2. Make the number of bytes from 'state' included into the hash
9410 independent from the number of PRNG bytes requested.
9412 The first measure alone would be sufficient to avoid
9413 Markku-Juhani's attack. (Actually it had never occurred
9414 to me that the half of 'md_local' used for chaining was the
9415 half from which PRNG output bytes were taken -- I had always
9416 assumed that the secret half would be used.) The second
9417 measure makes sure that additional data from 'state' is never
9418 mixed into 'md_local' in small portions; this heuristically
9419 further strengthens the PRNG.
9422 *) Fix crypto/bn/asm/mips3.s.
9425 *) When only the key is given to "enc", the IV is undefined. Print out
9426 an error message in this case.
9429 *) Handle special case when X509_NAME is empty in X509 printing routines.
9432 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
9433 positive and less than q.
9436 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
9437 used: it isn't thread safe and the add_lock_callback should handle
9439 [Paul Rose <Paul.Rose@bridge.com>]
9441 *) Verify that incoming data obeys the block size in
9442 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
9446 [Ulf Möller, Bodo Möller]
9448 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
9449 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
9450 when fixing the server behaviour for backwards-compatible 'client
9451 hello' messages. (Note that the attack is impractical against
9452 SSL 3.0 and TLS 1.0 anyway because length and version checking
9453 means that the probability of guessing a valid ciphertext is
9454 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
9457 Before 0.9.5, the countermeasure (hide the error by generating a
9458 random 'decryption result') did not work properly because
9459 ERR_clear_error() was missing, meaning that SSL_get_error() would
9460 detect the supposedly ignored error.
9462 Both problems are now fixed.
9465 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
9466 (previously it was 1024).
9469 *) Fix for compatibility mode trust settings: ignore trust settings
9470 unless some valid trust or reject settings are present.
9473 *) Fix for blowfish EVP: its a variable length cipher.
9476 *) Fix various bugs related to DSA S/MIME verification. Handle missing
9477 parameters in DSA public key structures and return an error in the
9478 DSA routines if parameters are absent.
9481 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
9482 in the current directory if neither $RANDFILE nor $HOME was set.
9483 RAND_file_name() in 0.9.6a returned NULL in this case. This has
9484 caused some confusion to Windows users who haven't defined $HOME.
9485 Thus RAND_file_name() is changed again: e_os.h can define a
9486 DEFAULT_HOME, which will be used if $HOME is not set.
9487 For Windows, we use "C:"; on other platforms, we still require
9488 environment variables.
9490 *) Move 'if (!initialized) RAND_poll()' into regions protected by
9491 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
9492 having multiple threads call RAND_poll() concurrently.
9495 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
9496 combination of a flag and a thread ID variable.
9497 Otherwise while one thread is in ssleay_rand_bytes (which sets the
9498 flag), *other* threads can enter ssleay_add_bytes without obeying
9499 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
9500 that they do not hold after the first thread unsets add_do_not_lock).
9503 *) Change bctest again: '-x' expressions are not available in all
9507 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
9509 *) Fix a couple of memory leaks in PKCS7_dataDecode()
9510 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
9512 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
9513 the default extension for executables, if any. Also, make the perl
9514 scripts that use symlink() to test if it really exists and use "cp"
9515 if it doesn't. All this made OpenSSL compilable and installable in
9519 *) Fix for asn1_GetSequence() for indefinite length constructed data.
9520 If SEQUENCE is length is indefinite just set c->slen to the total
9521 amount of data available.
9522 [Steve Henson, reported by shige@FreeBSD.org]
9523 [This change does not apply to 0.9.7.]
9525 *) Change bctest to avoid here-documents inside command substitution
9526 (workaround for FreeBSD /bin/sh bug).
9527 For compatibility with Ultrix, avoid shell functions (introduced
9528 in the bctest version that searches along $PATH).
9531 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
9532 with des_encrypt() defined on some operating systems, like Solaris
9536 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
9537 On the Importance of Eliminating Errors in Cryptographic
9538 Computations, J. Cryptology 14 (2001) 2, 101-119,
9539 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
9542 *) MIPS assembler BIGNUM division bug fix.
9545 *) Disabled incorrect Alpha assembler code.
9548 *) Fix PKCS#7 decode routines so they correctly update the length
9549 after reading an EOC for the EXPLICIT tag.
9551 [This change does not apply to 0.9.7.]
9553 *) Fix bug in PKCS#12 key generation routines. This was triggered
9554 if a 3DES key was generated with a 0 initial byte. Include
9555 PKCS12_BROKEN_KEYGEN compilation option to retain the old
9556 (but broken) behaviour.
9559 *) Enhance bctest to search for a working bc along $PATH and print
9561 [Tim Rice <tim@multitalents.net> via Richard Levitte]
9563 *) Fix memory leaks in err.c: free err_data string if necessary;
9564 don't write to the wrong index in ERR_set_error_data.
9567 *) Implement ssl23_peek (analogous to ssl23_read), which previously
9571 *) Replace rdtsc with _emit statements for VC++ version 5.
9572 [Jeremy Cooper <jeremy@baymoo.org>]
9574 *) Make it possible to reuse SSLv2 sessions.
9577 *) In copy_email() check for >= 0 as a return value for
9578 X509_NAME_get_index_by_NID() since 0 is a valid index.
9579 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
9581 *) Avoid coredump with unsupported or invalid public keys by checking if
9582 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
9583 PKCS7_verify() fails with non detached data.
9586 *) Don't use getenv in library functions when run as setuid/setgid.
9587 New function OPENSSL_issetugid().
9590 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
9591 due to incorrect handling of multi-threading:
9593 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
9595 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
9597 3. Count how many times MemCheck_off() has been called so that
9598 nested use can be treated correctly. This also avoids
9599 inband-signalling in the previous code (which relied on the
9600 assumption that thread ID 0 is impossible).
9603 *) Add "-rand" option also to s_client and s_server.
9606 *) Fix CPU detection on Irix 6.x.
9607 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
9608 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
9610 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
9613 [This change does not apply to 0.9.7.]
9615 *) Use the cached encoding of an X509_NAME structure rather than
9616 copying it. This is apparently the reason for the libsafe "errors"
9617 but the code is actually correct.
9620 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
9621 Bleichenbacher's DSA attack.
9622 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
9623 to be set and top=0 forces the highest bit to be set; top=-1 is new
9624 and leaves the highest bit random.
9625 [Ulf Moeller, Bodo Moeller]
9627 *) In the NCONF_...-based implementations for CONF_... queries
9628 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
9629 a temporary CONF structure with the data component set to NULL
9630 (which gives segmentation faults in lh_retrieve).
9631 Instead, use NULL for the CONF pointer in CONF_get_string and
9632 CONF_get_number (which may use environment variables) and directly
9633 return NULL from CONF_get_section.
9636 *) Fix potential buffer overrun for EBCDIC.
9639 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
9640 keyUsage if basicConstraints absent for a CA.
9643 *) Make SMIME_write_PKCS7() write mail header values with a format that
9644 is more generally accepted (no spaces before the semicolon), since
9645 some programs can't parse those values properly otherwise. Also make
9646 sure BIO's that break lines after each write do not create invalid
9650 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
9651 macros previously used would not encode an empty SEQUENCE OF
9652 and break the signature.
9654 [This change does not apply to 0.9.7.]
9656 *) Zero the premaster secret after deriving the master secret in
9660 *) Add some EVP_add_digest_alias registrations (as found in
9661 OpenSSL_add_all_digests()) to SSL_library_init()
9662 aka OpenSSL_add_ssl_algorithms(). This provides improved
9663 compatibility with peers using X.509 certificates
9664 with unconventional AlgorithmIdentifier OIDs.
9667 *) Fix for Irix with NO_ASM.
9668 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
9670 *) ./config script fixes.
9671 [Ulf Moeller, Richard Levitte]
9673 *) Fix 'openssl passwd -1'.
9676 *) Change PKCS12_key_gen_asc() so it can cope with non null
9677 terminated strings whose length is passed in the passlen
9678 parameter, for example from PEM callbacks. This was done
9679 by adding an extra length parameter to asc2uni().
9680 [Steve Henson, reported by <oddissey@samsung.co.kr>]
9682 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
9683 call failed, free the DSA structure.
9686 *) Fix to uni2asc() to cope with zero length Unicode strings.
9687 These are present in some PKCS#12 files.
9690 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
9691 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
9692 when writing a 32767 byte record.
9693 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
9695 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
9696 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
9698 (RSA objects have a reference count access to which is protected
9699 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
9700 so they are meant to be shared between threads.)
9701 [Bodo Moeller, Geoff Thorpe; original patch submitted by
9702 "Reddie, Steven" <Steven.Reddie@ca.com>]
9704 *) Fix a deadlock in CRYPTO_mem_leaks().
9707 *) Use better test patterns in bntest.
9710 *) rand_win.c fix for Borland C.
9713 *) BN_rshift bugfix for n == 0.
9716 *) Add a 'bctest' script that checks for some known 'bc' bugs
9717 so that 'make test' does not abort just because 'bc' is broken.
9720 *) Store verify_result within SSL_SESSION also for client side to
9721 avoid potential security hole. (Re-used sessions on the client side
9722 always resulted in verify_result==X509_V_OK, not using the original
9723 result of the server certificate verification.)
9726 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
9727 SSL3_RT_APPLICATION_DATA, return 0.
9728 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
9732 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
9733 releases, have been re-implemented by renaming the previous
9734 implementations of ssl2_read and ssl3_read to ssl2_read_internal
9735 and ssl3_read_internal, respectively, and adding 'peek' parameters
9736 to them. The new ssl[23]_{read,peek} functions are calls to
9737 ssl[23]_read_internal with the 'peek' flag set appropriately.
9738 A 'peek' parameter has also been added to ssl3_read_bytes, which
9739 does the actual work for ssl3_read_internal.
9742 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
9743 the method-specific "init()" handler. Also clean up ex_data after
9744 calling the method-specific "finish()" handler. Previously, this was
9745 happening the other way round.
9748 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
9749 The previous value, 12, was not always sufficient for BN_mod_exp().
9752 *) Make sure that shared libraries get the internal name engine with
9753 the full version number and not just 0. This should mark the
9754 shared libraries as not backward compatible. Of course, this should
9755 be changed again when we can guarantee backward binary compatibility.
9758 *) Fix typo in get_cert_by_subject() in by_dir.c
9759 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
9761 *) Rework the system to generate shared libraries:
9763 - Make note of the expected extension for the shared libraries and
9764 if there is a need for symbolic links from for example libcrypto.so.0
9765 to libcrypto.so.0.9.7. There is extended info in Configure for
9768 - Make as few rebuilds of the shared libraries as possible.
9770 - Still avoid linking the OpenSSL programs with the shared libraries.
9772 - When installing, install the shared libraries separately from the
9776 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
9778 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
9779 and not in SSL_clear because the latter is also used by the
9780 accept/connect functions; previously, the settings made by
9781 SSL_set_read_ahead would be lost during the handshake.
9782 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
9784 *) Correct util/mkdef.pl to be selective about disabled algorithms.
9785 Previously, it would create entries for disabled algorithms no
9789 *) Added several new manual pages for SSL_* function.
9792 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
9794 *) In ssl23_get_client_hello, generate an error message when faced
9795 with an initial SSL 3.0/TLS record that is too small to contain the
9796 first two bytes of the ClientHello message, i.e. client_version.
9797 (Note that this is a pathologic case that probably has never happened
9798 in real life.) The previous approach was to use the version number
9799 from the record header as a substitute; but our protocol choice
9800 should not depend on that one because it is not authenticated
9801 by the Finished messages.
9804 *) More robust randomness gathering functions for Windows.
9805 [Jeffrey Altman <jaltman@columbia.edu>]
9807 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
9808 not set then we don't setup the error code for issuer check errors
9809 to avoid possibly overwriting other errors which the callback does
9810 handle. If an application does set the flag then we assume it knows
9811 what it is doing and can handle the new informational codes
9815 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
9816 a general "ANY" type, as such it should be able to decode anything
9817 including tagged types. However it didn't check the class so it would
9818 wrongly interpret tagged types in the same way as their universal
9819 counterpart and unknown types were just rejected. Changed so that the
9820 tagged and unknown types are handled in the same way as a SEQUENCE:
9821 that is the encoding is stored intact. There is also a new type
9822 "V_ASN1_OTHER" which is used when the class is not universal, in this
9823 case we have no idea what the actual type is so we just lump them all
9827 *) On VMS, stdout may very well lead to a file that is written to
9828 in a record-oriented fashion. That means that every write() will
9829 write a separate record, which will be read separately by the
9830 programs trying to read from it. This can be very confusing.
9832 The solution is to put a BIO filter in the way that will buffer
9833 text until a linefeed is reached, and then write everything a
9834 line at a time, so every record written will be an actual line,
9835 not chunks of lines and not (usually doesn't happen, but I've
9836 seen it once) several lines in one record. BIO_f_linebuffer() is
9839 Currently, it's a VMS-only method, because that's where it has
9840 been tested well enough.
9843 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
9844 it can return incorrect results.
9845 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
9846 but it was in 0.9.6-beta[12].)
9849 *) Disable the check for content being present when verifying detached
9850 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
9851 include zero length content when signing messages.
9854 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
9855 BIO_ctrl (for BIO pairs).
9858 *) Add DSO method for VMS.
9861 *) Bug fix: Montgomery multiplication could produce results with the
9865 *) Add RPM specification openssl.spec and modify it to build three
9866 packages. The default package contains applications, application
9867 documentation and run-time libraries. The devel package contains
9868 include files, static libraries and function documentation. The
9869 doc package contains the contents of the doc directory. The original
9870 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
9873 *) Add a large number of documentation files for many SSL routines.
9874 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
9876 *) Add a configuration entry for Sony News 4.
9877 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
9879 *) Don't set the two most significant bits to one when generating a
9880 random number < q in the DSA library.
9883 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
9884 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
9885 the underlying transport is blocking) if a handshake took place.
9886 (The default behaviour is needed by applications such as s_client
9887 and s_server that use select() to determine when to use SSL_read;
9888 but for applications that know in advance when to expect data, it
9889 just makes things more complicated.)
9892 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
9896 *) Add a few more EBCDIC conditionals that make `req' and `x509'
9897 work better on such systems.
9898 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9900 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
9901 Update PKCS12_parse() so it copies the friendlyName and the
9902 keyid to the certificates aux info.
9905 *) Fix bug in PKCS7_verify() which caused an infinite loop
9906 if there was more than one signature.
9907 [Sven Uszpelkat <su@celocom.de>]
9909 *) Major change in util/mkdef.pl to include extra information
9910 about each symbol, as well as presenting variables as well
9911 as functions. This change means that there's n more need
9912 to rebuild the .num files when some algorithms are excluded.
9915 *) Allow the verify time to be set by an application,
9916 rather than always using the current time.
9919 *) Phase 2 verify code reorganisation. The certificate
9920 verify code now looks up an issuer certificate by a
9921 number of criteria: subject name, authority key id
9922 and key usage. It also verifies self signed certificates
9923 by the same criteria. The main comparison function is
9924 X509_check_issued() which performs these checks.
9926 Lot of changes were necessary in order to support this
9927 without completely rewriting the lookup code.
9929 Authority and subject key identifier are now cached.
9931 The LHASH 'certs' is X509_STORE has now been replaced
9932 by a STACK_OF(X509_OBJECT). This is mainly because an
9933 LHASH can't store or retrieve multiple objects with
9934 the same hash value.
9936 As a result various functions (which were all internal
9937 use only) have changed to handle the new X509_STORE
9938 structure. This will break anything that messed round
9939 with X509_STORE internally.
9941 The functions X509_STORE_add_cert() now checks for an
9942 exact match, rather than just subject name.
9944 The X509_STORE API doesn't directly support the retrieval
9945 of multiple certificates matching a given criteria, however
9946 this can be worked round by performing a lookup first
9947 (which will fill the cache with candidate certificates)
9948 and then examining the cache for matches. This is probably
9949 the best we can do without throwing out X509_LOOKUP
9950 entirely (maybe later...).
9952 The X509_VERIFY_CTX structure has been enhanced considerably.
9954 All certificate lookup operations now go via a get_issuer()
9955 callback. Although this currently uses an X509_STORE it
9956 can be replaced by custom lookups. This is a simple way
9957 to bypass the X509_STORE hackery necessary to make this
9958 work and makes it possible to use more efficient techniques
9959 in future. A very simple version which uses a simple
9960 STACK for its trusted certificate store is also provided
9961 using X509_STORE_CTX_trusted_stack().
9963 The verify_cb() and verify() callbacks now have equivalents
9964 in the X509_STORE_CTX structure.
9966 X509_STORE_CTX also has a 'flags' field which can be used
9967 to customise the verify behaviour.
9970 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
9971 excludes S/MIME capabilities.
9974 *) When a certificate request is read in keep a copy of the
9975 original encoding of the signed data and use it when outputting
9976 again. Signatures then use the original encoding rather than
9977 a decoded, encoded version which may cause problems if the
9978 request is improperly encoded.
9981 *) For consistency with other BIO_puts implementations, call
9982 buffer_write(b, ...) directly in buffer_puts instead of calling
9985 In BIO_puts, increment b->num_write as in BIO_write.
9986 [Peter.Sylvester@EdelWeb.fr]
9988 *) Fix BN_mul_word for the case where the word is 0. (We have to use
9989 BN_zero, we may not return a BIGNUM with an array consisting of
9993 *) Avoid calling abort() from within the library when problems are
9994 detected, except if preprocessor symbols have been defined
9995 (such as REF_CHECK, BN_DEBUG etc.).
9998 *) New openssl application 'rsautl'. This utility can be
9999 used for low level RSA operations. DER public key
10000 BIO/fp routines also added.
10003 *) New Configure entry and patches for compiling on QNX 4.
10004 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
10006 *) A demo state-machine implementation was sponsored by
10007 Nuron (http://www.nuron.com/) and is now available in
10008 demos/state_machine.
10011 *) New options added to the 'dgst' utility for signature
10012 generation and verification.
10015 *) Unrecognized PKCS#7 content types are now handled via a
10016 catch all ASN1_TYPE structure. This allows unsupported
10017 types to be stored as a "blob" and an application can
10018 encode and decode it manually.
10021 *) Fix various signed/unsigned issues to make a_strex.c
10022 compile under VC++.
10023 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
10025 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
10026 length if passed a buffer. ASN1_INTEGER_to_BN failed
10027 if passed a NULL BN and its argument was negative.
10028 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
10030 *) Modification to PKCS#7 encoding routines to output definite
10031 length encoding. Since currently the whole structures are in
10032 memory there's not real point in using indefinite length
10033 constructed encoding. However if OpenSSL is compiled with
10034 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
10037 *) Added BIO_vprintf() and BIO_vsnprintf().
10040 *) Added more prefixes to parse for in the strings written
10041 through a logging bio, to cover all the levels that are available
10042 through syslog. The prefixes are now:
10044 PANIC, EMERG, EMR => LOG_EMERG
10045 ALERT, ALR => LOG_ALERT
10046 CRIT, CRI => LOG_CRIT
10047 ERROR, ERR => LOG_ERR
10048 WARNING, WARN, WAR => LOG_WARNING
10049 NOTICE, NOTE, NOT => LOG_NOTICE
10050 INFO, INF => LOG_INFO
10051 DEBUG, DBG => LOG_DEBUG
10053 and as before, if none of those prefixes are present at the
10054 beginning of the string, LOG_ERR is chosen.
10056 On Win32, the LOG_* levels are mapped according to this:
10058 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
10059 LOG_WARNING => EVENTLOG_WARNING_TYPE
10060 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
10064 *) Made it possible to reconfigure with just the configuration
10065 argument "reconf" or "reconfigure". The command line arguments
10066 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
10067 and are retrieved from there when reconfiguring.
10070 *) MD4 implemented.
10071 [Assar Westerlund <assar@sics.se>, Richard Levitte]
10073 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
10076 *) The obj_dat.pl script was messing up the sorting of object
10077 names. The reason was that it compared the quoted version
10078 of strings as a result "OCSP" > "OCSP Signing" because
10079 " > SPACE. Changed script to store unquoted versions of
10080 names and add quotes on output. It was also omitting some
10081 names from the lookup table if they were given a default
10082 value (that is if SN is missing it is given the same
10083 value as LN and vice versa), these are now added on the
10084 grounds that if an object has a name we should be able to
10085 look it up. Finally added warning output when duplicate
10086 short or long names are found.
10089 *) Changes needed for Tandem NSK.
10090 [Scott Uroff <scott@xypro.com>]
10092 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
10093 RSA_padding_check_SSLv23(), special padding was never detected
10094 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
10095 version rollback attacks was not effective.
10097 In s23_clnt.c, don't use special rollback-attack detection padding
10098 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
10099 client; similarly, in s23_srvr.c, don't do the rollback check if
10100 SSL 2.0 is the only protocol enabled in the server.
10103 *) Make it possible to get hexdumps of unprintable data with 'openssl
10104 asn1parse'. By implication, the functions ASN1_parse_dump() and
10105 BIO_dump_indent() are added.
10108 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
10109 these print out strings and name structures based on various
10110 flags including RFC2253 support and proper handling of
10111 multibyte characters. Added options to the 'x509' utility
10112 to allow the various flags to be set.
10115 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
10116 Also change the functions X509_cmp_current_time() and
10117 X509_gmtime_adj() work with an ASN1_TIME structure,
10118 this will enable certificates using GeneralizedTime in validity
10119 dates to be checked.
10122 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
10123 negative public key encodings) on by default,
10124 NO_NEG_PUBKEY_BUG can be set to disable it.
10127 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
10128 content octets. An i2c_ASN1_OBJECT is unnecessary because
10129 the encoding can be trivially obtained from the structure.
10132 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
10133 not read locks (CRYPTO_r_[un]lock).
10136 *) A first attempt at creating official support for shared
10137 libraries through configuration. I've kept it so the
10138 default is static libraries only, and the OpenSSL programs
10139 are always statically linked for now, but there are
10140 preparations for dynamic linking in place.
10141 This has been tested on Linux and Tru64.
10144 *) Randomness polling function for Win9x, as described in:
10145 Peter Gutmann, Software Generation of Practically Strong
10149 *) Fix so PRNG is seeded in req if using an already existing
10153 *) New options to smime application. -inform and -outform
10154 allow alternative formats for the S/MIME message including
10155 PEM and DER. The -content option allows the content to be
10156 specified separately. This should allow things like Netscape
10157 form signing output easier to verify.
10160 *) Fix the ASN1 encoding of tags using the 'long form'.
10163 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
10164 STRING types. These convert content octets to and from the
10165 underlying type. The actual tag and length octets are
10166 already assumed to have been read in and checked. These
10167 are needed because all other string types have virtually
10168 identical handling apart from the tag. By having versions
10169 of the ASN1 functions that just operate on content octets
10170 IMPLICIT tagging can be handled properly. It also allows
10171 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
10172 and ASN1_INTEGER are identical apart from the tag.
10175 *) Change the handling of OID objects as follows:
10177 - New object identifiers are inserted in objects.txt, following
10178 the syntax given in objects.README.
10179 - objects.pl is used to process obj_mac.num and create a new
10181 - obj_dat.pl is used to create a new obj_dat.h, using the data in
10184 This is currently kind of a hack, and the perl code in objects.pl
10185 isn't very elegant, but it works as I intended. The simplest way
10186 to check that it worked correctly is to look in obj_dat.h and
10187 check the array nid_objs and make sure the objects haven't moved
10188 around (this is important!). Additions are OK, as well as
10189 consistent name changes.
10192 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
10195 *) Addition of the command line parameter '-rand file' to 'openssl req'.
10196 The given file adds to whatever has already been seeded into the
10197 random pool through the RANDFILE configuration file option or
10198 environment variable, or the default random state file.
10201 *) mkstack.pl now sorts each macro group into lexical order.
10202 Previously the output order depended on the order the files
10203 appeared in the directory, resulting in needless rewriting
10207 *) Patches to make OpenSSL compile under Win32 again. Mostly
10208 work arounds for the VC++ problem that it treats func() as
10209 func(void). Also stripped out the parts of mkdef.pl that
10210 added extra typesafe functions: these no longer exist.
10213 *) Reorganisation of the stack code. The macros are now all
10214 collected in safestack.h . Each macro is defined in terms of
10215 a "stack macro" of the form SKM_<name>(type, a, b). The
10216 DEBUG_SAFESTACK is now handled in terms of function casts,
10217 this has the advantage of retaining type safety without the
10218 use of additional functions. If DEBUG_SAFESTACK is not defined
10219 then the non typesafe macros are used instead. Also modified the
10220 mkstack.pl script to handle the new form. Needs testing to see
10221 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
10222 the default if no major problems. Similar behaviour for ASN1_SET_OF
10223 and PKCS12_STACK_OF.
10226 *) When some versions of IIS use the 'NET' form of private key the
10227 key derivation algorithm is different. Normally MD5(password) is
10228 used as a 128 bit RC4 key. In the modified case
10229 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
10230 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
10231 as the old Netscape_RSA functions except they have an additional
10232 'sgckey' parameter which uses the modified algorithm. Also added
10233 an -sgckey command line option to the rsa utility. Thanks to
10234 Adrian Peck <bertie@ncipher.com> for posting details of the modified
10235 algorithm to openssl-dev.
10238 *) The evp_local.h macros were using 'c.##kname' which resulted in
10239 invalid expansion on some systems (SCO 5.0.5 for example).
10240 Corrected to 'c.kname'.
10241 [Phillip Porch <root@theporch.com>]
10243 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
10244 a STACK of email addresses from a certificate or request, these look
10245 in the subject name and the subject alternative name extensions and
10246 omit any duplicate addresses.
10249 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
10250 This makes DSA verification about 2 % faster.
10253 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
10254 (meaning that now 2^5 values will be precomputed, which is only 4 KB
10255 plus overhead for 1024 bit moduli).
10256 This makes exponentiations about 0.5 % faster for 1024 bit
10257 exponents (as measured by "openssl speed rsa2048").
10260 *) Rename memory handling macros to avoid conflicts with other
10262 Malloc => OPENSSL_malloc
10263 Malloc_locked => OPENSSL_malloc_locked
10264 Realloc => OPENSSL_realloc
10265 Free => OPENSSL_free
10268 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
10269 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
10272 *) CygWin32 support.
10273 [John Jarvie <jjarvie@newsguy.com>]
10275 *) The type-safe stack code has been rejigged. It is now only compiled
10276 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
10277 by default all type-specific stack functions are "#define"d back to
10278 standard stack functions. This results in more streamlined output
10279 but retains the type-safety checking possibilities of the original
10283 *) The STACK code has been cleaned up, and certain type declarations
10284 that didn't make a lot of sense have been brought in line. This has
10285 also involved a cleanup of sorts in safestack.h to more correctly
10286 map type-safe stack functions onto their plain stack counterparts.
10287 This work has also resulted in a variety of "const"ifications of
10288 lots of the code, especially "_cmp" operations which should normally
10289 be prototyped with "const" parameters anyway.
10292 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
10293 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
10294 (The PRNG state consists of two parts, the large pool 'state' and 'md',
10295 where all of 'md' is used each time the PRNG is used, but 'state'
10296 is used only indexed by a cyclic counter. As entropy may not be
10297 well distributed from the beginning, 'md' is important as a
10298 chaining variable. However, the output function chains only half
10299 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
10300 all of 'md', and seeding with STATE_SIZE dummy bytes will result
10301 in all of 'state' being rewritten, with the new values depending
10302 on virtually all of 'md'. This overcomes the 80 bit limitation.)
10305 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
10306 the handshake is continued after ssl_verify_cert_chain();
10307 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
10308 can lead to 'unexplainable' connection aborts later.
10309 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
10311 *) Major EVP API cipher revision.
10312 Add hooks for extra EVP features. This allows various cipher
10313 parameters to be set in the EVP interface. Support added for variable
10314 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
10315 setting of RC2 and RC5 parameters.
10317 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
10320 Remove lots of duplicated code from the EVP library. For example *every*
10321 cipher init() function handles the 'iv' in the same way according to the
10322 cipher mode. They also all do nothing if the 'key' parameter is NULL and
10323 for CFB and OFB modes they zero ctx->num.
10325 New functionality allows removal of S/MIME code RC2 hack.
10327 Most of the routines have the same form and so can be declared in terms
10330 By shifting this to the top level EVP_CipherInit() it can be removed from
10331 all individual ciphers. If the cipher wants to handle IVs or keys
10332 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
10335 Change lots of functions like EVP_EncryptUpdate() to now return a
10336 value: although software versions of the algorithms cannot fail
10337 any installed hardware versions can.
10340 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
10341 this option is set, tolerate broken clients that send the negotiated
10342 protocol version number instead of the requested protocol version
10346 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
10347 i.e. non-zero for export ciphersuites, zero otherwise.
10348 Previous versions had this flag inverted, inconsistent with
10349 rsa_tmp_cb (..._TMP_RSA_CB).
10350 [Bodo Moeller; problem reported by Amit Chopra]
10352 *) Add missing DSA library text string. Work around for some IIS
10353 key files with invalid SEQUENCE encoding.
10356 *) Add a document (doc/standards.txt) that list all kinds of standards
10357 and so on that are implemented in OpenSSL.
10360 *) Enhance c_rehash script. Old version would mishandle certificates
10361 with the same subject name hash and wouldn't handle CRLs at all.
10362 Added -fingerprint option to crl utility, to support new c_rehash
10366 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
10369 *) Fix for SSL server purpose checking. Server checking was
10370 rejecting certificates which had extended key usage present
10371 but no ssl client purpose.
10372 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
10374 *) Make PKCS#12 code work with no password. The PKCS#12 spec
10375 is a little unclear about how a blank password is handled.
10376 Since the password in encoded as a BMPString with terminating
10377 double NULL a zero length password would end up as just the
10378 double NULL. However no password at all is different and is
10379 handled differently in the PKCS#12 key generation code. NS
10380 treats a blank password as zero length. MSIE treats it as no
10381 password on export: but it will try both on import. We now do
10382 the same: PKCS12_parse() tries zero length and no password if
10383 the password is set to "" or NULL (NULL is now a valid password:
10384 it wasn't before) as does the pkcs12 application.
10387 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
10388 perror when PEM_read_bio_X509_REQ fails, the error message must
10389 be obtained from the error queue.
10392 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
10393 it in ERR_remove_state if appropriate, and change ERR_get_state
10394 accordingly to avoid race conditions (this is necessary because
10395 thread_hash is no longer constant once set).
10398 *) Bugfix for linux-elf makefile.one.
10401 *) RSA_get_default_method() will now cause a default
10402 RSA_METHOD to be chosen if one doesn't exist already.
10403 Previously this was only set during a call to RSA_new()
10404 or RSA_new_method(NULL) meaning it was possible for
10405 RSA_get_default_method() to return NULL.
10408 *) Added native name translation to the existing DSO code
10409 that will convert (if the flag to do so is set) filenames
10410 that are sufficiently small and have no path information
10411 into a canonical native form. Eg. "blah" converted to
10412 "libblah.so" or "blah.dll" etc.
10415 *) New function ERR_error_string_n(e, buf, len) which is like
10416 ERR_error_string(e, buf), but writes at most 'len' bytes
10417 including the 0 terminator. For ERR_error_string_n, 'buf'
10419 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
10421 *) CONF library reworked to become more general. A new CONF
10422 configuration file reader "class" is implemented as well as a
10423 new functions (NCONF_*, for "New CONF") to handle it. The now
10424 old CONF_* functions are still there, but are reimplemented to
10425 work in terms of the new functions. Also, a set of functions
10426 to handle the internal storage of the configuration data is
10427 provided to make it easier to write new configuration file
10428 reader "classes" (I can definitely see something reading a
10429 configuration file in XML format, for example), called _CONF_*,
10430 or "the configuration storage API"...
10432 The new configuration file reading functions are:
10434 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
10435 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
10437 NCONF_default, NCONF_WIN32
10439 NCONF_dump_fp, NCONF_dump_bio
10441 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
10442 NCONF_new creates a new CONF object. This works in the same way
10443 as other interfaces in OpenSSL, like the BIO interface.
10444 NCONF_dump_* dump the internal storage of the configuration file,
10445 which is useful for debugging. All other functions take the same
10446 arguments as the old CONF_* functions wth the exception of the
10447 first that must be a `CONF *' instead of a `LHASH *'.
10449 To make it easer to use the new classes with the old CONF_* functions,
10450 the function CONF_set_default_method is provided.
10453 *) Add '-tls1' option to 'openssl ciphers', which was already
10454 mentioned in the documentation but had not been implemented.
10455 (This option is not yet really useful because even the additional
10456 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
10459 *) Initial DSO code added into libcrypto for letting OpenSSL (and
10460 OpenSSL-based applications) load shared libraries and bind to
10461 them in a portable way.
10462 [Geoff Thorpe, with contributions from Richard Levitte]
10464 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
10466 *) Make sure _lrotl and _lrotr are only used with MSVC.
10468 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
10469 (the default implementation of RAND_status).
10471 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
10472 to '-clrext' (= clear extensions), as intended and documented.
10473 [Bodo Moeller; inconsistency pointed out by Michael Attili
10474 <attili@amaxo.com>]
10476 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
10477 was larger than the MD block size.
10478 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
10480 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
10481 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
10482 using the passed key: if the passed key was a private key the result
10483 of X509_print(), for example, would be to print out all the private key
10487 *) des_quad_cksum() byte order bug fix.
10488 [Ulf Möller, using the problem description in krb4-0.9.7, where
10489 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
10491 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
10493 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
10495 *) For easily testing in shell scripts whether some command
10496 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
10497 returns with exit code 0 iff no command of the given name is available.
10498 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
10499 the output goes to stdout and nothing is printed to stderr.
10500 Additional arguments are always ignored.
10502 Since for each cipher there is a command of the same name,
10503 the 'no-cipher' compilation switches can be tested this way.
10505 ('openssl no-XXX' is not able to detect pseudo-commands such
10506 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
10509 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
10512 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
10513 is set; it will be thrown away anyway because each handshake creates
10515 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
10516 to parameters -- in previous versions (since OpenSSL 0.9.3) the
10517 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
10518 you effectively got SSL_OP_SINGLE_DH_USE when using this macro.
10521 *) New s_client option -ign_eof: EOF at stdin is ignored, and
10522 'Q' and 'R' lose their special meanings (quit/renegotiate).
10523 This is part of what -quiet does; unlike -quiet, -ign_eof
10524 does not suppress any output.
10527 *) Add compatibility options to the purpose and trust code. The
10528 purpose X509_PURPOSE_ANY is "any purpose" which automatically
10529 accepts a certificate or CA, this was the previous behaviour,
10530 with all the associated security issues.
10532 X509_TRUST_COMPAT is the old trust behaviour: only and
10533 automatically trust self signed roots in certificate store. A
10534 new trust setting X509_TRUST_DEFAULT is used to specify that
10535 a purpose has no associated trust setting and it should instead
10536 use the value in the default purpose.
10539 *) Fix the PKCS#8 DSA private key code so it decodes keys again
10540 and fix a memory leak.
10543 *) In util/mkerr.pl (which implements 'make errors'), preserve
10544 reason strings from the previous version of the .c file, as
10545 the default to have only downcase letters (and digits) in
10546 automatically generated reasons codes is not always appropriate.
10549 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
10550 using strerror. Previously, ERR_reason_error_string() returned
10551 library names as reason strings for SYSerr; but SYSerr is a special
10552 case where small numbers are errno values, not library numbers.
10555 *) Add '-dsaparam' option to 'openssl dhparam' application. This
10556 converts DSA parameters into DH parameters. (When creating parameters,
10557 DSA_generate_parameters is used.)
10560 *) Include 'length' (recommended exponent length) in C code generated
10561 by 'openssl dhparam -C'.
10564 *) The second argument to set_label in perlasm was already being used
10565 so couldn't be used as a "file scope" flag. Moved to third argument
10569 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
10570 instead of RAND_bytes for encryption IVs and salts.
10573 *) Include RAND_status() into RAND_METHOD instead of implementing
10574 it only for md_rand.c Otherwise replacing the PRNG by calling
10575 RAND_set_rand_method would be impossible.
10578 *) Don't let DSA_generate_key() enter an infinite loop if the random
10579 number generation fails.
10582 *) New 'rand' application for creating pseudo-random output.
10585 *) Added configuration support for Linux/IA64
10586 [Rolf Haberrecker <rolf@suse.de>]
10588 *) Assembler module support for Mingw32.
10591 *) Shared library support for HPUX (in shlib/).
10592 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
10594 *) Shared library support for Solaris gcc.
10595 [Lutz Behnke <behnke@trustcenter.de>]
10597 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
10599 *) PKCS7_encrypt() was adding text MIME headers twice because they
10600 were added manually and by SMIME_crlf_copy().
10603 *) In bntest.c don't call BN_rand with zero bits argument.
10604 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
10606 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
10607 case was implemented. This caused BN_div_recp() to fail occasionally.
10610 *) Add an optional second argument to the set_label() in the perl
10611 assembly language builder. If this argument exists and is set
10612 to 1 it signals that the assembler should use a symbol whose
10613 scope is the entire file, not just the current function. This
10614 is needed with MASM which uses the format label:: for this scope.
10615 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
10617 *) Change the ASN1 types so they are typedefs by default. Before
10618 almost all types were #define'd to ASN1_STRING which was causing
10619 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
10623 *) Change names of new functions to the new get1/get0 naming
10624 convention: After 'get1', the caller owns a reference count
10625 and has to call ..._free; 'get0' returns a pointer to some
10626 data structure without incrementing reference counters.
10627 (Some of the existing 'get' functions increment a reference
10628 counter, some don't.)
10629 Similarly, 'set1' and 'add1' functions increase reference
10630 counters or duplicate objects.
10633 *) Allow for the possibility of temp RSA key generation failure:
10634 the code used to assume it always worked and crashed on failure.
10637 *) Fix potential buffer overrun problem in BIO_printf().
10638 [Ulf Möller, using public domain code by Patrick Powell; problem
10639 pointed out by David Sacerdote <das33@cornell.edu>]
10641 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
10642 RAND_egd() and RAND_status(). In the command line application,
10643 the EGD socket can be specified like a seed file using RANDFILE
10647 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
10648 Some CAs (e.g. Verisign) distribute certificates in this form.
10651 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
10652 list to exclude them. This means that no special compilation option
10653 is needed to use anonymous DH: it just needs to be included in the
10657 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
10658 EVP_MD_type. The old functionality is available in a new macro called
10659 EVP_MD_md(). Change code that uses it and update docs.
10662 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
10663 where the 'void *' argument is replaced by a function pointer argument.
10664 Previously 'void *' was abused to point to functions, which works on
10665 many platforms, but is not correct. As these functions are usually
10666 called by macros defined in OpenSSL header files, most source code
10667 should work without changes.
10670 *) <openssl/opensslconf.h> (which is created by Configure) now contains
10671 sections with information on -D... compiler switches used for
10672 compiling the library so that applications can see them. To enable
10673 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
10674 must be defined. E.g.,
10675 #define OPENSSL_ALGORITHM_DEFINES
10676 #include <openssl/opensslconf.h>
10677 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
10678 [Richard Levitte, Ulf and Bodo Möller]
10680 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
10684 *) Change the 'other' type in certificate aux info to a STACK_OF
10685 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
10686 the required ASN1 format: arbitrary types determined by an OID.
10689 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
10690 argument to 'req'. This is not because the function is newer or
10691 better than others it just uses the work 'NEW' in the certificate
10692 request header lines. Some software needs this.
10695 *) Reorganise password command line arguments: now passwords can be
10696 obtained from various sources. Delete the PEM_cb function and make
10697 it the default behaviour: i.e. if the callback is NULL and the
10698 usrdata argument is not NULL interpret it as a null terminated pass
10699 phrase. If usrdata and the callback are NULL then the pass phrase
10700 is prompted for as usual.
10703 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
10704 the support is automatically enabled. The resulting binaries will
10705 autodetect the card and use it if present.
10706 [Ben Laurie and Compaq Inc.]
10708 *) Work around for Netscape hang bug. This sends certificate request
10709 and server done in one record. Since this is perfectly legal in the
10710 SSL/TLS protocol it isn't a "bug" option and is on by default. See
10711 the bugs/SSLv3 entry for more info.
10714 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
10717 *) Add -rand argument to smime and pkcs12 applications and read/write
10721 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
10724 *) Add command line password options to the remaining applications.
10727 *) Bug fix for BN_div_recp() for numerators with an even number of
10731 *) More tests in bntest.c, and changed test_bn output.
10734 *) ./config recognizes MacOS X now.
10737 *) Bug fix for BN_div() when the first words of num and divisor are
10738 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
10741 *) Add support for various broken PKCS#8 formats, and command line
10742 options to produce them.
10745 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
10746 get temporary BIGNUMs from a BN_CTX.
10749 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
10753 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
10754 include a #define from the old name to the new. The original intent
10755 was that statically linked binaries could for example just call
10756 SSLeay_add_all_ciphers() to just add ciphers to the table and not
10757 link with digests. This never worked because SSLeay_add_all_digests()
10758 and SSLeay_add_all_ciphers() were in the same source file so calling
10759 one would link with the other. They are now in separate source files.
10762 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
10765 *) Use a less unusual form of the Miller-Rabin primality test (it used
10766 a binary algorithm for exponentiation integrated into the Miller-Rabin
10767 loop, our standard modexp algorithms are faster).
10770 *) Support for the EBCDIC character set completed.
10771 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
10773 *) Source code cleanups: use const where appropriate, eliminate casts,
10774 use void * instead of char * in lhash.
10777 *) Bugfix: ssl3_send_server_key_exchange was not restartable
10778 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
10779 this the server could overwrite ephemeral keys that the client
10783 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
10784 using 50 iterations of the Rabin-Miller test.
10786 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
10787 iterations of the Rabin-Miller test as required by the appendix
10788 to FIPS PUB 186[-1]) instead of DSA_is_prime.
10789 As BN_is_prime_fasttest includes trial division, DSA parameter
10790 generation becomes much faster.
10792 This implies a change for the callback functions in DSA_is_prime
10793 and DSA_generate_parameters: The callback function is called once
10794 for each positive witness in the Rabin-Miller test, not just
10795 occasionally in the inner loop; and the parameters to the
10796 callback function now provide an iteration count for the outer
10797 loop rather than for the current invocation of the inner loop.
10798 DSA_generate_parameters additionally can call the callback
10799 function with an 'iteration count' of -1, meaning that a
10800 candidate has passed the trial division test (when q is generated
10801 from an application-provided seed, trial division is skipped).
10804 *) New function BN_is_prime_fasttest that optionally does trial
10805 division before starting the Rabin-Miller test and has
10806 an additional BN_CTX * argument (whereas BN_is_prime always
10807 has to allocate at least one BN_CTX).
10808 'callback(1, -1, cb_arg)' is called when a number has passed the
10809 trial division stage.
10812 *) Fix for bug in CRL encoding. The validity dates weren't being handled
10816 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
10819 *) New function BN_pseudo_rand().
10822 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
10823 bignum version of BN_from_montgomery() with the working code from
10824 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
10828 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
10829 made it impossible to use the same SSL_SESSION data structure in
10830 SSL2 clients in multiple threads.
10833 *) The return value of RAND_load_file() no longer counts bytes obtained
10834 by stat(). RAND_load_file(..., -1) is new and uses the complete file
10835 to seed the PRNG (previously an explicit byte count was required).
10836 [Ulf Möller, Bodo Möller]
10838 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
10839 used (char *) instead of (void *) and had casts all over the place.
10842 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
10845 *) Retain source code compatibility for BN_prime_checks macro:
10846 BN_is_prime(..., BN_prime_checks, ...) now uses
10847 BN_prime_checks_for_size to determine the appropriate number of
10848 Rabin-Miller iterations.
10851 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
10852 DH_CHECK_P_NOT_SAFE_PRIME.
10853 (Check if this is true? OpenPGP calls them "strong".)
10856 *) Merge the functionality of "dh" and "gendh" programs into a new program
10857 "dhparam". The old programs are retained for now but will handle DH keys
10858 (instead of parameters) in future.
10861 *) Make the ciphers, s_server and s_client programs check the return values
10862 when a new cipher list is set.
10865 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
10866 ciphers. Before when the 56bit ciphers were enabled the sorting was
10869 The syntax for the cipher sorting has been extended to support sorting by
10870 cipher-strength (using the strength_bits hard coded in the tables).
10871 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
10873 Fix a bug in the cipher-command parser: when supplying a cipher command
10874 string with an "undefined" symbol (neither command nor alphanumeric
10875 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
10876 an error is flagged.
10878 Due to the strength-sorting extension, the code of the
10879 ssl_create_cipher_list() function was completely rearranged. I hope that
10880 the readability was also increased :-)
10881 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
10883 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
10884 for the first serial number and places 2 in the serial number file. This
10885 avoids problems when the root CA is created with serial number zero and
10886 the first user certificate has the same issuer name and serial number
10890 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
10891 the new code. Add documentation for this stuff.
10894 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
10895 X509_*() to X509at_*() on the grounds that they don't handle X509
10896 structures and behave in an analogous way to the X509v3 functions:
10897 they shouldn't be called directly but wrapper functions should be used
10900 So we also now have some wrapper functions that call the X509at functions
10901 when passed certificate requests. (TO DO: similar things can be done with
10902 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
10903 things. Some of these need some d2i or i2d and print functionality
10904 because they handle more complex structures.)
10907 *) Add missing #ifndefs that caused missing symbols when building libssl
10908 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
10909 NO_RSA in ssl/s2*.c.
10910 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
10912 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
10913 has a return value which indicates the quality of the random data
10914 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
10915 error queue. New function RAND_pseudo_bytes() generates output that is
10916 guaranteed to be unique but not unpredictable. RAND_add is like
10917 RAND_seed, but takes an extra argument for an entropy estimate
10918 (RAND_seed always assumes full entropy).
10921 *) Do more iterations of Rabin-Miller probable prime test (specifically,
10922 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
10923 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
10924 in crypto/bn/bn_prime.c for the complete table). This guarantees a
10925 false-positive rate of at most 2^-80 for random input.
10928 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
10931 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
10932 in the 0.9.5 release), this returns the chain
10933 from an X509_CTX structure with a dup of the stack and all
10934 the X509 reference counts upped: so the stack will exist
10935 after X509_CTX_cleanup() has been called. Modify pkcs12.c
10938 Also make SSL_SESSION_print() print out the verify return
10942 *) Add manpage for the pkcs12 command. Also change the default
10943 behaviour so MAC iteration counts are used unless the new
10944 -nomaciter option is used. This improves file security and
10945 only older versions of MSIE (4.0 for example) need it.
10948 *) Honor the no-xxx Configure options when creating .DEF files.
10951 *) Add PKCS#10 attributes to field table: challengePassword,
10952 unstructuredName and unstructuredAddress. These are taken from
10953 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
10954 international characters are used.
10956 More changes to X509_ATTRIBUTE code: allow the setting of types
10957 based on strings. Remove the 'loc' parameter when adding
10958 attributes because these will be a SET OF encoding which is sorted
10962 *) Initial changes to the 'req' utility to allow request generation
10963 automation. This will allow an application to just generate a template
10964 file containing all the field values and have req construct the
10967 Initial support for X509_ATTRIBUTE handling. Stacks of these are
10968 used all over the place including certificate requests and PKCS#7
10969 structures. They are currently handled manually where necessary with
10970 some primitive wrappers for PKCS#7. The new functions behave in a
10971 manner analogous to the X509 extension functions: they allow
10972 attributes to be looked up by NID and added.
10974 Later something similar to the X509V3 code would be desirable to
10975 automatically handle the encoding, decoding and printing of the
10976 more complex types. The string types like challengePassword can
10977 be handled by the string table functions.
10979 Also modified the multi byte string table handling. Now there is
10980 a 'global mask' which masks out certain types. The table itself
10981 can use the flag STABLE_NO_MASK to ignore the mask setting: this
10982 is useful when for example there is only one permissible type
10983 (as in countryName) and using the mask might result in no valid
10987 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
10988 SSL_get_peer_finished to allow applications to obtain the latest
10989 Finished messages sent to the peer or expected from the peer,
10990 respectively. (SSL_get_peer_finished is usually the Finished message
10991 actually received from the peer, otherwise the protocol will be aborted.)
10993 As the Finished message are message digests of the complete handshake
10994 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
10995 be used for external authentication procedures when the authentication
10996 provided by SSL/TLS is not desired or is not enough.
10999 *) Enhanced support for Alpha Linux is added. Now ./config checks if
11000 the host supports BWX extension and if Compaq C is present on the
11001 $PATH. Just exploiting of the BWX extension results in 20-30%
11002 performance kick for some algorithms, e.g. DES and RC4 to mention
11003 a couple. Compaq C in turn generates ~20% faster code for MD5 and
11007 *) Add support for MS "fast SGC". This is arguably a violation of the
11008 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
11009 weak crypto and after checking the certificate is SGC a second one
11010 with strong crypto. MS SGC stops the first handshake after receiving
11011 the server certificate message and sends a second client hello. Since
11012 a server will typically do all the time consuming operations before
11013 expecting any further messages from the client (server key exchange
11014 is the most expensive) there is little difference between the two.
11016 To get OpenSSL to support MS SGC we have to permit a second client
11017 hello message after we have sent server done. In addition we have to
11018 reset the MAC if we do get this second client hello.
11021 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
11022 if a DER encoded private key is RSA or DSA traditional format. Changed
11023 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
11024 format DER encoded private key. Newer code should use PKCS#8 format which
11025 has the key type encoded in the ASN1 structure. Added DER private key
11026 support to pkcs8 application.
11029 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
11030 ciphersuites has been selected (as required by the SSL 3/TLS 1
11031 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
11032 is set, we interpret this as a request to violate the specification
11033 (the worst that can happen is a handshake failure, and 'correct'
11034 behaviour would result in a handshake failure anyway).
11037 *) In SSL_CTX_add_session, take into account that there might be multiple
11038 SSL_SESSION structures with the same session ID (e.g. when two threads
11039 concurrently obtain them from an external cache).
11040 The internal cache can handle only one SSL_SESSION with a given ID,
11041 so if there's a conflict, we now throw out the old one to achieve
11045 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
11046 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
11047 some routines that use cipher OIDs: some ciphers do not have OIDs
11048 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
11052 *) Simplify the trust setting structure and code. Now we just have
11053 two sequences of OIDs for trusted and rejected settings. These will
11054 typically have values the same as the extended key usage extension
11055 and any application specific purposes.
11057 The trust checking code now has a default behaviour: it will just
11058 check for an object with the same NID as the passed id. Functions can
11059 be provided to override either the default behaviour or the behaviour
11060 for a given id. SSL client, server and email already have functions
11061 in place for compatibility: they check the NID and also return "trusted"
11062 if the certificate is self signed.
11065 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
11066 traditional format into an EVP_PKEY structure.
11069 *) Add a password callback function PEM_cb() which either prompts for
11070 a password if usr_data is NULL or otherwise assumes it is a null
11071 terminated password. Allow passwords to be passed on command line
11072 environment or config files in a few more utilities.
11075 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
11076 keys. Add some short names for PKCS#8 PBE algorithms and allow them
11077 to be specified on the command line for the pkcs8 and pkcs12 utilities.
11078 Update documentation.
11081 *) Support for ASN1 "NULL" type. This could be handled before by using
11082 ASN1_TYPE but there wasn't any function that would try to read a NULL
11083 and produce an error if it couldn't. For compatibility we also have
11084 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
11085 don't allocate anything because they don't need to.
11088 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
11090 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
11092 *) Rebuild of the memory allocation routines used by OpenSSL code and
11093 possibly others as well. The purpose is to make an interface that
11094 provide hooks so anyone can build a separate set of allocation and
11095 deallocation routines to be used by OpenSSL, for example memory
11096 pool implementations, or something else, which was previously hard
11097 since Malloc(), Realloc() and Free() were defined as macros having
11098 the values malloc, realloc and free, respectively (except for Win32
11099 compilations). The same is provided for memory debugging code.
11100 OpenSSL already comes with functionality to find memory leaks, but
11101 this gives people a chance to debug other memory problems.
11103 With these changes, a new set of functions and macros have appeared:
11105 CRYPTO_set_mem_debug_functions() [F]
11106 CRYPTO_get_mem_debug_functions() [F]
11107 CRYPTO_dbg_set_options() [F]
11108 CRYPTO_dbg_get_options() [F]
11109 CRYPTO_malloc_debug_init() [M]
11111 The memory debug functions are NULL by default, unless the library
11112 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
11113 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
11114 gives the standard debugging functions that come with OpenSSL) or
11115 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
11116 provided by the library user) must be used. When the standard
11117 debugging functions are used, CRYPTO_dbg_set_options can be used to
11118 request additional information:
11119 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
11120 the CRYPTO_MDEBUG_xxx macro when compiling the library.
11122 Also, things like CRYPTO_set_mem_functions will always give the
11123 expected result (the new set of functions is used for allocation
11124 and deallocation) at all times, regardless of platform and compiler
11127 To finish it up, some functions that were never use in any other
11128 way than through macros have a new API and new semantic:
11130 CRYPTO_dbg_malloc()
11131 CRYPTO_dbg_realloc()
11134 All macros of value have retained their old syntax.
11135 [Richard Levitte and Bodo Moeller]
11137 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
11138 ordering of SMIMECapabilities wasn't in "strength order" and there
11139 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
11143 *) Some ASN1 types with illegal zero length encoding (INTEGER,
11144 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
11145 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
11147 *) Merge in my S/MIME library for OpenSSL. This provides a simple
11148 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
11149 functionality to handle multipart/signed properly) and a utility
11150 called 'smime' to call all this stuff. This is based on code I
11151 originally wrote for Celo who have kindly allowed it to be
11152 included in OpenSSL.
11155 *) Add variants des_set_key_checked and des_set_key_unchecked of
11156 des_set_key (aka des_key_sched). Global variable des_check_key
11157 decides which of these is called by des_set_key; this way
11158 des_check_key behaves as it always did, but applications and
11159 the library itself, which was buggy for des_check_key == 1,
11160 have a cleaner way to pick the version they need.
11163 *) New function PKCS12_newpass() which changes the password of a
11167 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
11168 dynamic mix. In both cases the ids can be used as an index into the
11169 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
11170 functions so they accept a list of the field values and the
11171 application doesn't need to directly manipulate the X509_TRUST
11175 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
11179 *) Modify the way the V3 extension code looks up extensions. This now
11180 works in a similar way to the object code: we have some "standard"
11181 extensions in a static table which is searched with OBJ_bsearch()
11182 and the application can add dynamic ones if needed. The file
11183 crypto/x509v3/ext_dat.h now has the info: this file needs to be
11184 updated whenever a new extension is added to the core code and kept
11185 in ext_nid order. There is a simple program 'tabtest.c' which checks
11186 this. New extensions are not added too often so this file can readily
11187 be maintained manually.
11189 There are two big advantages in doing things this way. The extensions
11190 can be looked up immediately and no longer need to be "added" using
11191 X509V3_add_standard_extensions(): this function now does nothing.
11192 [Side note: I get *lots* of email saying the extension code doesn't
11193 work because people forget to call this function]
11194 Also no dynamic allocation is done unless new extensions are added:
11195 so if we don't add custom extensions there is no need to call
11196 X509V3_EXT_cleanup().
11199 *) Modify enc utility's salting as follows: make salting the default. Add a
11200 magic header, so unsalted files fail gracefully instead of just decrypting
11201 to garbage. This is because not salting is a big security hole, so people
11202 should be discouraged from doing it.
11205 *) Fixes and enhancements to the 'x509' utility. It allowed a message
11206 digest to be passed on the command line but it only used this
11207 parameter when signing a certificate. Modified so all relevant
11208 operations are affected by the digest parameter including the
11209 -fingerprint and -x509toreq options. Also -x509toreq choked if a
11210 DSA key was used because it didn't fix the digest.
11213 *) Initial certificate chain verify code. Currently tests the untrusted
11214 certificates for consistency with the verify purpose (which is set
11215 when the X509_STORE_CTX structure is set up) and checks the pathlength.
11217 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
11218 this is because it will reject chains with invalid extensions whereas
11219 every previous version of OpenSSL and SSLeay made no checks at all.
11221 Trust code: checks the root CA for the relevant trust settings. Trust
11222 settings have an initial value consistent with the verify purpose: e.g.
11223 if the verify purpose is for SSL client use it expects the CA to be
11224 trusted for SSL client use. However the default value can be changed to
11225 permit custom trust settings: one example of this would be to only trust
11226 certificates from a specific "secure" set of CAs.
11228 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
11229 which should be used for version portability: especially since the
11230 verify structure is likely to change more often now.
11232 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
11233 to set them. If not set then assume SSL clients will verify SSL servers
11236 Two new options to the verify program: -untrusted allows a set of
11237 untrusted certificates to be passed in and -purpose which sets the
11238 intended purpose of the certificate. If a purpose is set then the
11239 new chain verify code is used to check extension consistency.
11242 *) Support for the authority information access extension.
11245 *) Modify RSA and DSA PEM read routines to transparently handle
11246 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
11247 public keys in a format compatible with certificate
11248 SubjectPublicKeyInfo structures. Unfortunately there were already
11249 functions called *_PublicKey_* which used various odd formats so
11250 these are retained for compatibility: however the DSA variants were
11251 never in a public release so they have been deleted. Changed dsa/rsa
11252 utilities to handle the new format: note no releases ever handled public
11253 keys so we should be OK.
11255 The primary motivation for this change is to avoid the same fiasco
11256 that dogs private keys: there are several incompatible private key
11257 formats some of which are standard and some OpenSSL specific and
11258 require various evil hacks to allow partial transparent handling and
11259 even then it doesn't work with DER formats. Given the option anything
11260 other than PKCS#8 should be dumped: but the other formats have to
11261 stay in the name of compatibility.
11263 With public keys and the benefit of hindsight one standard format
11264 is used which works with EVP_PKEY, RSA or DSA structures: though
11265 it clearly returns an error if you try to read the wrong kind of key.
11267 Added a -pubkey option to the 'x509' utility to output the public key.
11268 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
11269 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
11270 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
11271 that do the same as the EVP_PKEY_assign_*() except they up the
11272 reference count of the added key (they don't "swallow" the
11276 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
11277 CRLs would fail if the file contained no certificates or no CRLs:
11278 added a new function to read in both types and return the number
11279 read: this means that if none are read it will be an error. The
11280 DER versions of the certificate and CRL reader would always fail
11281 because it isn't possible to mix certificates and CRLs in DER format
11282 without choking one or the other routine. Changed this to just read
11283 a certificate: this is the best we can do. Also modified the code
11284 in apps/verify.c to take notice of return codes: it was previously
11285 attempting to read in certificates from NULL pointers and ignoring
11286 any errors: this is one reason why the cert and CRL reader seemed
11287 to work. It doesn't check return codes from the default certificate
11288 routines: these may well fail if the certificates aren't installed.
11291 *) Code to support otherName option in GeneralName.
11294 *) First update to verify code. Change the verify utility
11295 so it warns if it is passed a self signed certificate:
11296 for consistency with the normal behaviour. X509_verify
11297 has been modified to it will now verify a self signed
11298 certificate if *exactly* the same certificate appears
11299 in the store: it was previously impossible to trust a
11300 single self signed certificate. This means that:
11301 openssl verify ss.pem
11302 now gives a warning about a self signed certificate but
11303 openssl verify -CAfile ss.pem ss.pem
11307 *) For servers, store verify_result in SSL_SESSION data structure
11308 (and add it to external session representation).
11309 This is needed when client certificate verifications fails,
11310 but an application-provided verification callback (set by
11311 SSL_CTX_set_cert_verify_callback) allows accepting the session
11312 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
11313 but returns 1): When the session is reused, we have to set
11314 ssl->verify_result to the appropriate error code to avoid
11316 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
11318 *) Fix a bug in the new PKCS#7 code: it didn't consider the
11319 case in PKCS7_dataInit() where the signed PKCS7 structure
11320 didn't contain any existing data because it was being created.
11321 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
11323 *) Add a salt to the key derivation routines in enc.c. This
11324 forms the first 8 bytes of the encrypted file. Also add a
11325 -S option to allow a salt to be input on the command line.
11328 *) New function X509_cmp(). Oddly enough there wasn't a function
11329 to compare two certificates. We do this by working out the SHA1
11330 hash and comparing that. X509_cmp() will be needed by the trust
11334 *) SSL_get1_session() is like SSL_get_session(), but increments
11335 the reference count in the SSL_SESSION returned.
11336 [Geoff Thorpe <geoff@eu.c2.net>]
11338 *) Fix for 'req': it was adding a null to request attributes.
11339 Also change the X509_LOOKUP and X509_INFO code to handle
11340 certificate auxiliary information.
11343 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
11347 *) Add the possibility to add extra information to the memory leak
11348 detecting output, to form tracebacks, showing from where each
11349 allocation was originated: CRYPTO_push_info("constant string") adds
11350 the string plus current file name and line number to a per-thread
11351 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
11352 is like calling CYRPTO_pop_info() until the stack is empty.
11353 Also updated memory leak detection code to be multi-thread-safe.
11356 *) Add options -text and -noout to pkcs7 utility and delete the
11357 encryption options which never did anything. Update docs.
11360 *) Add options to some of the utilities to allow the pass phrase
11361 to be included on either the command line (not recommended on
11362 OSes like Unix) or read from the environment. Update the
11363 manpages and fix a few bugs.
11366 *) Add a few manpages for some of the openssl commands.
11369 *) Fix the -revoke option in ca. It was freeing up memory twice,
11370 leaking and not finding already revoked certificates.
11373 *) Extensive changes to support certificate auxiliary information.
11374 This involves the use of X509_CERT_AUX structure and X509_AUX
11375 functions. An X509_AUX function such as PEM_read_X509_AUX()
11376 can still read in a certificate file in the usual way but it
11377 will also read in any additional "auxiliary information". By
11378 doing things this way a fair degree of compatibility can be
11379 retained: existing certificates can have this information added
11380 using the new 'x509' options.
11382 Current auxiliary information includes an "alias" and some trust
11383 settings. The trust settings will ultimately be used in enhanced
11384 certificate chain verification routines: currently a certificate
11385 can only be trusted if it is self signed and then it is trusted
11389 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
11390 The problem was that one of the replacement routines had not been working
11391 since SSLeay releases. For now the offending routine has been replaced
11392 with non-optimised assembler. Even so, this now gives around 95%
11393 performance improvement for 1024 bit RSA signs.
11396 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
11397 handling. Most clients have the effective key size in bits equal to
11398 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
11399 A few however don't do this and instead use the size of the decrypted key
11400 to determine the RC2 key length and the AlgorithmIdentifier to determine
11401 the effective key length. In this case the effective key length can still
11402 be 40 bits but the key length can be 168 bits for example. This is fixed
11403 by manually forcing an RC2 key into the EVP_PKEY structure because the
11404 EVP code can't currently handle unusual RC2 key sizes: it always assumes
11405 the key length and effective key length are equal.
11408 *) Add a bunch of functions that should simplify the creation of
11409 X509_NAME structures. Now you should be able to do:
11410 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
11411 and have it automatically work out the correct field type and fill in
11412 the structures. The more adventurous can try:
11413 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
11414 and it will (hopefully) work out the correct multibyte encoding.
11417 *) Change the 'req' utility to use the new field handling and multibyte
11418 copy routines. Before the DN field creation was handled in an ad hoc
11419 way in req, ca, and x509 which was rather broken and didn't support
11420 BMPStrings or UTF8Strings. Since some software doesn't implement
11421 BMPStrings or UTF8Strings yet, they can be enabled using the config file
11422 using the dirstring_type option. See the new comment in the default
11423 openssl.cnf for more info.
11426 *) Make crypto/rand/md_rand.c more robust:
11427 - Assure unique random numbers after fork().
11428 - Make sure that concurrent threads access the global counter and
11429 md serializably so that we never lose entropy in them
11430 or use exactly the same state in multiple threads.
11431 Access to the large state is not always serializable because
11432 the additional locking could be a performance killer, and
11433 md should be large enough anyway.
11436 *) New file apps/app_rand.c with commonly needed functionality
11437 for handling the random seed file.
11439 Use the random seed file in some applications that previously did not:
11441 dsaparam -genkey (which also ignored its '-rand' option),
11444 x509 (when signing).
11445 Except on systems with /dev/urandom, it is crucial to have a random
11446 seed file at least for key creation, DSA signing, and for DH exchanges;
11447 for RSA signatures we could do without one.
11449 gendh and gendsa (unlike genrsa) used to read only the first byte
11450 of each file listed in the '-rand' option. The function as previously
11451 found in genrsa is now in app_rand.c and is used by all programs
11452 that support '-rand'.
11455 *) In RAND_write_file, use mode 0600 for creating files;
11456 don't just chmod when it may be too late.
11459 *) Report an error from X509_STORE_load_locations
11460 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
11463 *) New function ASN1_mbstring_copy() this copies a string in either
11464 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
11465 into an ASN1_STRING type. A mask of permissible types is passed
11466 and it chooses the "minimal" type to use or an error if not type
11470 *) Add function equivalents to the various macros in asn1.h. The old
11471 macros are retained with an M_ prefix. Code inside the library can
11472 use the M_ macros. External code (including the openssl utility)
11473 should *NOT* in order to be "shared library friendly".
11476 *) Add various functions that can check a certificate's extensions
11477 to see if it usable for various purposes such as SSL client,
11478 server or S/MIME and CAs of these types. This is currently
11479 VERY EXPERIMENTAL but will ultimately be used for certificate chain
11480 verification. Also added a -purpose flag to x509 utility to
11481 print out all the purposes.
11484 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
11488 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
11489 for, obtain and decode and extension and obtain its critical flag.
11490 This allows all the necessary extension code to be handled in a
11491 single function call.
11494 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
11495 platforms. See crypto/rc4/rc4_enc.c for further details.
11498 *) New -noout option to asn1parse. This causes no output to be produced
11499 its main use is when combined with -strparse and -out to extract data
11500 from a file (which may not be in ASN.1 format).
11503 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
11504 when producing the local key id.
11505 [Richard Levitte <levitte@stacken.kth.se>]
11507 *) New option -dhparam in s_server. This allows a DH parameter file to be
11508 stated explicitly. If it is not stated then it tries the first server
11509 certificate file. The previous behaviour hard coded the filename
11513 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
11514 a public key to be input or output. For example:
11515 openssl rsa -in key.pem -pubout -out pubkey.pem
11516 Also added necessary DSA public key functions to handle this.
11519 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
11520 in the message. This was handled by allowing
11521 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
11522 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
11524 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
11525 to the end of the strings whereas this didn't. This would cause problems
11526 if strings read with d2i_ASN1_bytes() were later modified.
11527 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
11529 *) Fix for base64 decode bug. When a base64 bio reads only one line of
11530 data and it contains EOF it will end up returning an error. This is
11531 caused by input 46 bytes long. The cause is due to the way base64
11532 BIOs find the start of base64 encoded data. They do this by trying a
11533 trial decode on each line until they find one that works. When they
11534 do a flag is set and it starts again knowing it can pass all the
11535 data directly through the decoder. Unfortunately it doesn't reset
11536 the context it uses. This means that if EOF is reached an attempt
11537 is made to pass two EOFs through the context and this causes the
11538 resulting error. This can also cause other problems as well. As is
11539 usual with these problems it takes *ages* to find and the fix is
11540 trivial: move one line.
11541 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
11543 *) Ugly workaround to get s_client and s_server working under Windows. The
11544 old code wouldn't work because it needed to select() on sockets and the
11545 tty (for keypresses and to see if data could be written). Win32 only
11546 supports select() on sockets so we select() with a 1s timeout on the
11547 sockets and then see if any characters are waiting to be read, if none
11548 are present then we retry, we also assume we can always write data to
11549 the tty. This isn't nice because the code then blocks until we've
11550 received a complete line of data and it is effectively polling the
11551 keyboard at 1s intervals: however it's quite a bit better than not
11552 working at all :-) A dedicated Windows application might handle this
11553 with an event loop for example.
11556 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
11557 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
11558 will be called when RSA_sign() and RSA_verify() are used. This is useful
11559 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
11560 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
11561 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
11562 This necessitated the support of an extra signature type NID_md5_sha1
11563 for SSL signatures and modifications to the SSL library to use it instead
11564 of calling RSA_public_decrypt() and RSA_private_encrypt().
11567 *) Add new -verify -CAfile and -CApath options to the crl program, these
11568 will lookup a CRL issuers certificate and verify the signature in a
11569 similar way to the verify program. Tidy up the crl program so it
11570 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
11571 less strict. It will now permit CRL extensions even if it is not
11572 a V2 CRL: this will allow it to tolerate some broken CRLs.
11575 *) Initialize all non-automatic variables each time one of the openssl
11576 sub-programs is started (this is necessary as they may be started
11577 multiple times from the "OpenSSL>" prompt).
11578 [Lennart Bang, Bodo Moeller]
11580 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
11581 removing all other RSA functionality (this is what NO_RSA does). This
11582 is so (for example) those in the US can disable those operations covered
11583 by the RSA patent while allowing storage and parsing of RSA keys and RSA
11587 *) Non-copying interface to BIO pairs.
11588 (still largely untested)
11591 *) New function ASN1_tag2str() to convert an ASN1 tag to a descriptive
11592 ASCII string. This was handled independently in various places before.
11595 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
11596 UTF8 strings a character at a time.
11599 *) Use client_version from client hello to select the protocol
11600 (s23_srvr.c) and for RSA client key exchange verification
11601 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
11604 *) Add various utility functions to handle SPKACs, these were previously
11605 handled by poking round in the structure internals. Added new function
11606 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
11607 print, verify and generate SPKACs. Based on an original idea from
11608 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
11611 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
11614 *) Allow the config file extension section to be overwritten on the
11615 command line. Based on an original idea from Massimiliano Pala
11616 <madwolf@comune.modena.it>. The new option is called -extensions
11617 and can be applied to ca, req and x509. Also -reqexts to override
11618 the request extensions in req and -crlexts to override the crl extensions
11622 *) Add new feature to the SPKAC handling in ca. Now you can include
11623 the same field multiple times by preceding it by "XXXX." for example:
11626 this is the same syntax as used in the req config file.
11629 *) Allow certificate extensions to be added to certificate requests. These
11630 are specified in a 'req_extensions' option of the req section of the
11631 config file. They can be printed out with the -text option to req but
11632 are otherwise ignored at present.
11635 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
11636 data read consists of only the final block it would not decrypted because
11637 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
11638 A misplaced 'break' also meant the decrypted final block might not be
11639 copied until the next read.
11642 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
11643 a few extra parameters to the DH structure: these will be useful if
11644 for example we want the value of 'q' or implement X9.42 DH.
11647 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
11648 provides hooks that allow the default DSA functions or functions on a
11649 "per key" basis to be replaced. This allows hardware acceleration and
11650 hardware key storage to be handled without major modification to the
11651 library. Also added low level modexp hooks and CRYPTO_EX structure and
11652 associated functions.
11655 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
11656 as "read only": it can't be written to and the buffer it points to will
11657 not be freed. Reading from a read only BIO is much more efficient than
11658 a normal memory BIO. This was added because there are several times when
11659 an area of memory needs to be read from a BIO. The previous method was
11660 to create a memory BIO and write the data to it, this results in two
11661 copies of the data and an O(n^2) reading algorithm. There is a new
11662 function BIO_new_mem_buf() which creates a read only memory BIO from
11663 an area of memory. Also modified the PKCS#7 routines to use read only
11667 *) Bugfix: ssl23_get_client_hello did not work properly when called in
11668 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
11669 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
11670 but a retry condition occurred while trying to read the rest.
11673 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
11674 NID_pkcs7_encrypted by default: this was wrong since this should almost
11675 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
11676 the encrypted data type: this is a more sensible place to put it and it
11677 allows the PKCS#12 code to be tidied up that duplicated this
11681 *) Changed obj_dat.pl script so it takes its input and output files on
11682 the command line. This should avoid shell escape redirection problems
11686 *) Initial support for certificate extension requests, these are included
11687 in things like Xenroll certificate requests. Included functions to allow
11688 extensions to be obtained and added.
11691 *) -crlf option to s_client and s_server for sending newlines as
11692 CRLF (as required by many protocols).
11695 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
11697 *) Install libRSAglue.a when OpenSSL is built with RSAref.
11698 [Ralf S. Engelschall]
11700 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
11701 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
11703 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
11707 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
11708 DH parameters/keys (q is lost during that conversion, but the resulting
11709 DH parameters contain its length).
11711 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
11712 much faster than DH_generate_parameters (which creates parameters
11713 where p = 2*q + 1), and also the smaller q makes DH computations
11714 much more efficient (160-bit exponentiation instead of 1024-bit
11715 exponentiation); so this provides a convenient way to support DHE
11716 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
11717 utter importance to use
11718 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
11720 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
11721 when such DH parameters are used, because otherwise small subgroup
11722 attacks may become possible!
11725 *) Avoid memory leak in i2d_DHparams.
11728 *) Allow the -k option to be used more than once in the enc program:
11729 this allows the same encrypted message to be read by multiple recipients.
11732 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
11733 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
11734 it will always use the numerical form of the OID, even if it has a short
11738 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
11739 method only got called if p,q,dmp1,dmq1,iqmp components were present,
11740 otherwise bn_mod_exp was called. In the case of hardware keys for example
11741 no private key components need be present and it might store extra data
11742 in the RSA structure, which cannot be accessed from bn_mod_exp.
11743 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
11744 private key operations.
11747 *) Added support for SPARC Linux.
11750 *) pem_password_cb function type incompatibly changed from
11751 typedef int pem_password_cb(char *buf, int size, int rwflag);
11753 ....(char *buf, int size, int rwflag, void *userdata);
11754 so that applications can pass data to their callbacks:
11755 The PEM[_ASN1]_{read,write}... functions and macros now take an
11756 additional void * argument, which is just handed through whenever
11757 the password callback is called.
11758 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
11760 New function SSL_CTX_set_default_passwd_cb_userdata.
11762 Compatibility note: As many C implementations push function arguments
11763 onto the stack in reverse order, the new library version is likely to
11764 interoperate with programs that have been compiled with the old
11765 pem_password_cb definition (PEM_whatever takes some data that
11766 happens to be on the stack as its last argument, and the callback
11767 just ignores this garbage); but there is no guarantee whatsoever that
11770 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
11771 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
11772 problems not only on Windows, but also on some Unix platforms.
11773 To avoid problematic command lines, these definitions are now in an
11774 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
11775 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
11778 *) MIPS III/IV assembler module is reimplemented.
11781 *) More DES library cleanups: remove references to srand/rand and
11782 delete an unused file.
11785 *) Add support for the free Netwide assembler (NASM) under Win32,
11786 since not many people have MASM (ml) and it can be hard to obtain.
11787 This is currently experimental but it seems to work OK and pass all
11788 the tests. Check out INSTALL.W32 for info.
11791 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
11792 without temporary keys kept an extra copy of the server key,
11793 and connections with temporary keys did not free everything in case
11797 *) New function RSA_check_key and new openssl rsa option -check
11798 for verifying the consistency of RSA keys.
11799 [Ulf Moeller, Bodo Moeller]
11801 *) Various changes to make Win32 compile work:
11802 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
11803 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
11804 comparison" warnings.
11805 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
11808 *) Add a debugging option to PKCS#5 v2 key generation function: when
11809 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
11810 derived keys are printed to stderr.
11813 *) Copy the flags in ASN1_STRING_dup().
11814 [Roman E. Pavlov <pre@mo.msk.ru>]
11816 *) The x509 application mishandled signing requests containing DSA
11817 keys when the signing key was also DSA and the parameters didn't match.
11819 It was supposed to omit the parameters when they matched the signing key:
11820 the verifying software was then supposed to automatically use the CA's
11821 parameters if they were absent from the end user certificate.
11823 Omitting parameters is no longer recommended. The test was also
11824 the wrong way round! This was probably due to unusual behaviour in
11825 EVP_cmp_parameters() which returns 1 if the parameters match.
11826 This meant that parameters were omitted when they *didn't* match and
11827 the certificate was useless. Certificates signed with 'ca' didn't have
11829 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
11831 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
11832 The interface is as follows:
11833 Applications can use
11834 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
11835 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
11836 "off" is now the default.
11837 The library internally uses
11838 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
11839 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
11840 to disable memory-checking temporarily.
11842 Some inconsistent states that previously were possible (and were
11843 even the default) are now avoided.
11845 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
11846 with each memory chunk allocated; this is occasionally more helpful
11847 than just having a counter.
11849 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
11851 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
11855 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
11856 which largely parallels "options", but is for changing API behaviour,
11857 whereas "options" are about protocol behaviour.
11858 Initial "mode" flags are:
11860 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
11861 a single record has been written.
11862 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
11863 retries use the same buffer location.
11864 (But all of the contents must be
11868 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
11871 *) Fix problems with no-hmac etc.
11872 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
11874 *) New functions RSA_get_default_method(), RSA_set_method() and
11875 RSA_get_method(). These allows replacement of RSA_METHODs without having
11876 to mess around with the internals of an RSA structure.
11879 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
11880 Also really enable memory leak checks in openssl.c and in some
11882 [Chad C. Mulligan, Bodo Moeller]
11884 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
11885 up the length of negative integers. This has now been simplified to just
11886 store the length when it is first determined and use it later, rather
11887 than trying to keep track of where data is copied and updating it to
11889 [Steve Henson, reported by Brien Wheeler
11890 <bwheeler@authentica-security.com>]
11892 *) Add a new function PKCS7_signatureVerify. This allows the verification
11893 of a PKCS#7 signature but with the signing certificate passed to the
11894 function itself. This contrasts with PKCS7_dataVerify which assumes the
11895 certificate is present in the PKCS#7 structure. This isn't always the
11896 case: certificates can be omitted from a PKCS#7 structure and be
11897 distributed by "out of band" means (such as a certificate database).
11900 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
11901 function prototypes in pem.h, also change util/mkdef.pl to add the
11902 necessary function names.
11905 *) mk1mf.pl (used by Windows builds) did not properly read the
11906 options set by Configure in the top level Makefile, and Configure
11907 was not even able to write more than one option correctly.
11908 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
11911 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
11912 file to be loaded from a BIO or FILE pointer. The BIO version will
11913 for example allow memory BIOs to contain config info.
11916 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
11917 Whoever hopes to achieve shared-library compatibility across versions
11918 must use this, not the compile-time macro.
11919 (Exercise 0.9.4: Which is the minimum library version required by
11921 Note: All this applies only to multi-threaded programs, others don't
11925 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
11926 through a BIO pair triggered the default case, i.e.
11927 SSLerr(...,SSL_R_UNKNOWN_STATE).
11930 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
11931 can use the SSL library even if none of the specific BIOs is
11935 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
11936 for the encoded length.
11937 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
11939 *) Add initial documentation of the X509V3 functions.
11942 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
11943 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
11944 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
11945 secure PKCS#8 private key format with a high iteration count.
11948 *) Fix determination of Perl interpreter: A perl or perl5
11949 _directory_ in $PATH was also accepted as the interpreter.
11950 [Ralf S. Engelschall]
11952 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
11953 wrong with it but it was very old and did things like calling
11954 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
11955 unusual formatting.
11958 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
11959 to use the new extension code.
11962 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
11963 with macros. This should make it easier to change their form, add extra
11964 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
11968 *) Add to configuration table a new entry that can specify an alternative
11969 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
11970 according to Mark Crispin <MRC@Panda.COM>.
11974 *) DES CBC did not update the IV. Weird.
11977 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
11978 Changing the behaviour of the former might break existing programs --
11979 where IV updating is needed, des_ncbc_encrypt can be used.
11982 *) When bntest is run from "make test" it drives bc to check its
11983 calculations, as well as internally checking them. If an internal check
11984 fails, it needs to cause bc to give a non-zero result or make test carries
11985 on without noticing the failure. Fixed.
11988 *) DES library cleanups.
11991 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
11992 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
11993 ciphers. NOTE: although the key derivation function has been verified
11994 against some published test vectors it has not been extensively tested
11995 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
11999 *) Instead of "mkdir -p", which is not fully portable, use new
12000 Perl script "util/mkdir-p.pl".
12003 *) Rewrite the way password based encryption (PBE) is handled. It used to
12004 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
12005 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
12006 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
12007 the 'parameter' field of the AlgorithmIdentifier is passed to the
12008 underlying key generation function so it must do its own ASN1 parsing.
12009 This has also changed the EVP_PBE_CipherInit() function which now has a
12010 'parameter' argument instead of literal salt and iteration count values
12011 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
12014 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
12015 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
12016 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
12017 KEY" because this clashed with PKCS#8 unencrypted string. Since this
12018 value was just used as a "magic string" and not used directly its
12019 value doesn't matter.
12022 *) Introduce some semblance of const correctness to BN. Shame C doesn't
12026 *) "linux-sparc64" configuration (ultrapenguin).
12027 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
12028 "linux-sparc" configuration.
12029 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
12031 *) config now generates no-xxx options for missing ciphers.
12034 *) Support the EBCDIC character set (work in progress).
12035 File ebcdic.c not yet included because it has a different license.
12036 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12038 *) Support BS2000/OSD-POSIX.
12039 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12041 *) Make callbacks for key generation use void * instead of char *.
12044 *) Make S/MIME samples compile (not yet tested).
12047 *) Additional typesafe stacks.
12050 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
12054 Changes between 0.9.3 and 0.9.3a [29 May 1999]
12056 *) New configuration variant "sco5-gcc".
12058 *) Updated some demos.
12059 [Sean O Riordain, Wade Scholine]
12061 *) Add missing BIO_free at exit of pkcs12 application.
12064 *) Fix memory leak in conf.c.
12067 *) Updates for Win32 to assembler version of MD5.
12070 *) Set #! path to perl in apps/der_chop to where we found it
12071 instead of using a fixed path.
12074 *) SHA library changes for irix64-mips4-cc.
12077 *) Improvements for VMS support.
12081 Changes between 0.9.2b and 0.9.3 [24 May 1999]
12083 *) Bignum library bug fix. IRIX 6 passes "make test" now!
12084 This also avoids the problems with SC4.2 and unpatched SC5.
12085 [Andy Polyakov <appro@fy.chalmers.se>]
12087 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
12088 These are required because of the typesafe stack would otherwise break
12089 existing code. If old code used a structure member which used to be STACK
12090 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
12091 sk_num or sk_value it would produce an error because the num, data members
12092 are not present in STACK_OF. Now it just produces a warning. sk_set
12093 replaces the old method of assigning a value to sk_value
12094 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
12095 that does this will no longer work (and should use sk_set instead) but
12096 this could be regarded as a "questionable" behaviour anyway.
12099 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
12100 correctly handle encrypted S/MIME data.
12103 *) Change type of various DES function arguments from des_cblock
12104 (which means, in function argument declarations, pointer to char)
12105 to des_cblock * (meaning pointer to array with 8 char elements),
12106 which allows the compiler to do more typechecking; it was like
12107 that back in SSLeay, but with lots of ugly casts.
12109 Introduce new type const_des_cblock.
12112 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
12113 problems: find RecipientInfo structure that matches recipient certificate
12114 and initialise the ASN1 structures properly based on passed cipher.
12117 *) Belatedly make the BN tests actually check the results.
12120 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
12121 to and from BNs: it was completely broken. New compilation option
12122 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
12123 key elements as negative integers.
12126 *) Reorganize and speed up MD5.
12127 [Andy Polyakov <appro@fy.chalmers.se>]
12130 [Richard Levitte <richard@levitte.org>]
12132 *) New option -out to asn1parse to allow the parsed structure to be
12133 output to a file. This is most useful when combined with the -strparse
12134 option to examine the output of things like OCTET STRINGS.
12137 *) Make SSL library a little more fool-proof by not requiring any longer
12138 that SSL_set_{accept,connect}_state be called before
12139 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
12140 in many applications because usually everything *appeared* to work as
12141 intended anyway -- now it really works as intended).
12144 *) Move openssl.cnf out of lib/.
12147 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
12148 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
12149 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
12150 [Ralf S. Engelschall]
12152 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
12153 handle PKCS#7 enveloped data properly.
12154 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
12156 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
12157 copying pointers. The cert_st handling is changed by this in
12158 various ways (and thus what used to be known as ctx->default_cert
12159 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
12160 any longer when s->cert does not give us what we need).
12161 ssl_cert_instantiate becomes obsolete by this change.
12162 As soon as we've got the new code right (possibly it already is?),
12163 we have solved a couple of bugs of the earlier code where s->cert
12164 was used as if it could not have been shared with other SSL structures.
12166 Note that using the SSL API in certain dirty ways now will result
12167 in different behaviour than observed with earlier library versions:
12168 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
12169 does not influence s as it used to.
12171 In order to clean up things more thoroughly, inside SSL_SESSION
12172 we don't use CERT any longer, but a new structure SESS_CERT
12173 that holds per-session data (if available); currently, this is
12174 the peer's certificate chain and, for clients, the server's certificate
12175 and temporary key. CERT holds only those values that can have
12176 meaningful defaults in an SSL_CTX.
12179 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
12180 from the internal representation. Various PKCS#7 fixes: remove some
12181 evil casts and set the enc_dig_alg field properly based on the signing
12185 *) Allow PKCS#12 password to be set from the command line or the
12186 environment. Let 'ca' get its config file name from the environment
12187 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
12191 *) Allow certificate policies extension to use an IA5STRING for the
12192 organization field. This is contrary to the PKIX definition but
12193 VeriSign uses it and IE5 only recognises this form. Document 'x509'
12197 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
12198 without disallowing inline assembler and the like for non-pedantic builds.
12201 *) Support Borland C++ builder.
12202 [Janez Jere <jj@void.si>, modified by Ulf Möller]
12204 *) Support Mingw32.
12207 *) SHA-1 cleanups and performance enhancements.
12208 [Andy Polyakov <appro@fy.chalmers.se>]
12210 *) Sparc v8plus assembler for the bignum library.
12211 [Andy Polyakov <appro@fy.chalmers.se>]
12213 *) Accept any -xxx and +xxx compiler options in Configure.
12216 *) Update HPUX configuration.
12219 *) Add missing sk_<type>_unshift() function to safestack.h
12220 [Ralf S. Engelschall]
12222 *) New function SSL_CTX_use_certificate_chain_file that sets the
12223 "extra_cert"s in addition to the certificate. (This makes sense
12224 only for "PEM" format files, as chains as a whole are not
12228 *) Support verify_depth from the SSL API.
12229 x509_vfy.c had what can be considered an off-by-one-error:
12230 Its depth (which was not part of the external interface)
12231 was actually counting the number of certificates in a chain;
12232 now it really counts the depth.
12235 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
12236 instead of X509err, which often resulted in confusing error
12237 messages since the error codes are not globally unique
12238 (e.g. an alleged error in ssl3_accept when a certificate
12239 didn't match the private key).
12241 *) New function SSL_CTX_set_session_id_context that allows to set a default
12242 value (so that you don't need SSL_set_session_id_context for each
12243 connection using the SSL_CTX).
12246 *) OAEP decoding bug fix.
12249 *) Support INSTALL_PREFIX for package builders, as proposed by
12253 *) New Configure options "threads" and "no-threads". For systems
12254 where the proper compiler options are known (currently Solaris
12255 and Linux), "threads" is the default.
12258 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
12261 *) Install various scripts to $(OPENSSLDIR)/misc, not to
12262 $(INSTALLTOP)/bin -- they shouldn't clutter directories
12263 such as /usr/local/bin.
12266 *) "make linux-shared" to build shared libraries.
12267 [Niels Poppe <niels@netbox.org>]
12269 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
12272 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
12273 extension adding in x509 utility.
12276 *) Remove NOPROTO sections and error code comments.
12279 *) Partial rewrite of the DEF file generator to now parse the ANSI
12283 *) New Configure options --prefix=DIR and --openssldir=DIR.
12286 *) Complete rewrite of the error code script(s). It is all now handled
12287 by one script at the top level which handles error code gathering,
12288 header rewriting and C source file generation. It should be much better
12289 than the old method: it now uses a modified version of Ulf's parser to
12290 read the ANSI prototypes in all header files (thus the old K&R definitions
12291 aren't needed for error creation any more) and do a better job of
12292 translating function codes into names. The old 'ASN1 error code imbedded
12293 in a comment' is no longer necessary and it doesn't use .err files which
12294 have now been deleted. Also the error code call doesn't have to appear all
12295 on one line (which resulted in some large lines...).
12298 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
12301 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
12302 0 (which usually indicates a closed connection), but continue reading.
12305 *) Fix some race conditions.
12308 *) Add support for CRL distribution points extension. Add Certificate
12309 Policies and CRL distribution points documentation.
12312 *) Move the autogenerated header file parts to crypto/opensslconf.h.
12315 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
12316 8 of keying material. Merlin has also confirmed interop with this fix
12317 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
12318 [Merlin Hughes <merlin@baltimore.ie>]
12320 *) Fix lots of warnings.
12321 [Richard Levitte <levitte@stacken.kth.se>]
12323 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
12324 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
12325 [Richard Levitte <levitte@stacken.kth.se>]
12327 *) Fix problems with sizeof(long) == 8.
12328 [Andy Polyakov <appro@fy.chalmers.se>]
12330 *) Change functions to ANSI C.
12333 *) Fix typos in error codes.
12334 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
12336 *) Remove defunct assembler files from Configure.
12339 *) SPARC v8 assembler BIGNUM implementation.
12340 [Andy Polyakov <appro@fy.chalmers.se>]
12342 *) Support for Certificate Policies extension: both print and set.
12343 Various additions to support the r2i method this uses.
12346 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
12347 return a const string when you are expecting an allocated buffer.
12350 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
12351 types DirectoryString and DisplayText.
12354 *) Add code to allow r2i extensions to access the configuration database,
12355 add an LHASH database driver and add several ctx helper functions.
12358 *) Fix an evil bug in bn_expand2() which caused various BN functions to
12359 fail when they extended the size of a BIGNUM.
12362 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
12363 support typesafe stack.
12366 *) Fix typo in SSL_[gs]et_options().
12367 [Nils Frostberg <nils@medcom.se>]
12369 *) Delete various functions and files that belonged to the (now obsolete)
12370 old X509V3 handling code.
12373 *) New Configure option "rsaref".
12376 *) Don't auto-generate pem.h.
12379 *) Introduce type-safe ASN.1 SETs.
12382 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
12383 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
12385 *) Introduce type-safe STACKs. This will almost certainly break lots of code
12386 that links with OpenSSL (well at least cause lots of warnings), but fear
12387 not: the conversion is trivial, and it eliminates loads of evil casts. A
12388 few STACKed things have been converted already. Feel free to convert more.
12389 In the fullness of time, I'll do away with the STACK type altogether.
12392 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
12393 specified in <certfile> by updating the entry in the index.txt file.
12394 This way one no longer has to edit the index.txt file manually for
12395 revoking a certificate. The -revoke option does the gory details now.
12396 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
12398 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
12399 `-text' option at all and this way the `-noout -text' combination was
12400 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
12401 [Ralf S. Engelschall]
12403 *) Make sure a corresponding plain text error message exists for the
12404 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
12405 verify callback function determined that a certificate was revoked.
12406 [Ralf S. Engelschall]
12408 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
12409 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
12410 all available ciphers including rc5, which was forgotten until now.
12411 In order to let the testing shell script know which algorithms
12412 are available, a new (up to now undocumented) command
12413 "openssl list-cipher-commands" is used.
12416 *) Bugfix: s_client occasionally would sleep in select() when
12417 it should have checked SSL_pending() first.
12420 *) New functions DSA_do_sign and DSA_do_verify to provide access to
12421 the raw DSA values prior to ASN.1 encoding.
12424 *) Tweaks to Configure
12425 [Niels Poppe <niels@netbox.org>]
12427 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
12431 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
12434 *) New config option to avoid instructions that are illegal on the 80386.
12435 The default code is faster, but requires at least a 486.
12438 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
12439 SSL2_SERVER_VERSION (not used at all) macros, which are now the
12440 same as SSL2_VERSION anyway.
12443 *) New "-showcerts" option for s_client.
12446 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
12447 application. Various cleanups and fixes.
12450 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
12451 modify error routines to work internally. Add error codes and PBE init
12452 to library startup routines.
12455 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
12456 packing functions to asn1 and evp. Changed function names and error
12457 codes along the way.
12460 *) PKCS12 integration: and so it begins... First of several patches to
12461 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
12462 objects to objects.h
12465 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
12466 and display support for Thawte strong extranet extension.
12469 *) Add LinuxPPC support.
12470 [Jeff Dubrule <igor@pobox.org>]
12472 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
12473 bn_div_words in alpha.s.
12474 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
12476 *) Make sure the RSA OAEP test is skipped under -DRSAref because
12477 OAEP isn't supported when OpenSSL is built with RSAref.
12478 [Ulf Moeller <ulf@fitug.de>]
12480 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
12481 so they no longer are missing under -DNOPROTO.
12482 [Soren S. Jorvang <soren@t.dk>]
12485 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
12487 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
12488 doesn't work when the session is reused. Coming soon!
12491 *) Fix a security hole, that allows sessions to be reused in the wrong
12492 context thus bypassing client cert protection! All software that uses
12493 client certs and session caches in multiple contexts NEEDS PATCHING to
12494 allow session reuse! A fuller solution is in the works.
12495 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
12497 *) Some more source tree cleanups (removed obsolete files
12498 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
12499 permission on "config" script to be executable) and a fix for the INSTALL
12501 [Ulf Moeller <ulf@fitug.de>]
12503 *) Remove some legacy and erroneous uses of malloc, free instead of
12505 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
12507 *) Make rsa_oaep_test return non-zero on error.
12508 [Ulf Moeller <ulf@fitug.de>]
12510 *) Add support for native Solaris shared libraries. Configure
12511 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
12512 if someone would make that last step automatic.
12513 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
12515 *) ctx_size was not built with the right compiler during "make links". Fixed.
12518 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
12519 except NULL ciphers". This means the default cipher list will no longer
12520 enable NULL ciphers. They need to be specifically enabled e.g. with
12521 the string "DEFAULT:eNULL".
12524 *) Fix to RSA private encryption routines: if p < q then it would
12525 occasionally produce an invalid result. This will only happen with
12526 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
12529 *) Be less restrictive and allow also `perl util/perlpath.pl
12530 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
12531 because this way one can also use an interpreter named `perl5' (which is
12532 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
12533 installed as `perl').
12534 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12536 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
12537 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12539 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
12540 advapi32.lib to Win32 build and change the pem test comparison
12541 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
12542 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
12543 and crypto/des/ede_cbcm_enc.c.
12546 *) DES quad checksum was broken on big-endian architectures. Fixed.
12549 *) Comment out two functions in bio.h that aren't implemented. Fix up the
12550 Win32 test batch file so it (might) work again. The Win32 test batch file
12551 is horrible: I feel ill....
12554 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
12555 in e_os.h. Audit of header files to check ANSI and non ANSI
12556 sections: 10 functions were absent from non ANSI section and not exported
12557 from Windows DLLs. Fixed up libeay.num for new functions.
12560 *) Make `openssl version' output lines consistent.
12561 [Ralf S. Engelschall]
12563 *) Fix Win32 symbol export lists for BIO functions: Added
12564 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
12565 to ms/libeay{16,32}.def.
12566 [Ralf S. Engelschall]
12568 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
12569 fine under Unix and passes some trivial tests I've now added. But the
12570 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
12571 added to make sure no one expects that this stuff really works in the
12572 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
12573 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
12575 [Ralf S. Engelschall]
12577 *) Fix the generation of two part addresses in perl.
12578 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
12580 *) Add config entry for Linux on MIPS.
12581 [John Tobey <jtobey@channel1.com>]
12583 *) Make links whenever Configure is run, unless we are on Windoze.
12586 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
12587 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
12591 *) Add a useful kludge to allow package maintainers to specify compiler and
12592 other platforms details on the command line without having to patch the
12593 Configure script everytime: One now can use ``perl Configure
12594 <id>:<details>'', i.e. platform ids are allowed to have details appended
12595 to them (separated by colons). This is treated as there would be a static
12596 pre-configured entry in Configure's %table under key <id> with value
12597 <details> and ``perl Configure <id>'' is called. So, when you want to
12598 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
12599 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
12600 now, which overrides the FreeBSD-elf entry on-the-fly.
12601 [Ralf S. Engelschall]
12603 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
12606 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
12607 on the `perl Configure ...' command line. This way one can compile
12608 OpenSSL libraries with Position Independent Code (PIC) which is needed
12609 for linking it into DSOs.
12610 [Ralf S. Engelschall]
12612 *) Remarkably, export ciphers were totally broken and no-one had noticed!
12616 *) Cleaned up the LICENSE document: The official contact for any license
12617 questions now is the OpenSSL core team under openssl-core@openssl.org.
12618 And add a paragraph about the dual-license situation to make sure people
12619 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
12620 to the OpenSSL toolkit.
12621 [Ralf S. Engelschall]
12623 *) General source tree makefile cleanups: Made `making xxx in yyy...'
12624 display consistent in the source tree and replaced `/bin/rm' by `rm'.
12625 Additionally cleaned up the `make links' target: Remove unnecessary
12626 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
12627 to speed processing and no longer clutter the display with confusing
12628 stuff. Instead only the actually done links are displayed.
12629 [Ralf S. Engelschall]
12631 *) Permit null encryption ciphersuites, used for authentication only. It used
12632 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
12633 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
12637 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
12638 signed attributes when verifying signatures (this would break them),
12639 the detached data encoding was wrong and public keys obtained using
12640 X509_get_pubkey() weren't freed.
12643 *) Add text documentation for the BUFFER functions. Also added a work around
12644 to a Win95 console bug. This was triggered by the password read stuff: the
12645 last character typed gets carried over to the next fread(). If you were
12646 generating a new cert request using 'req' for example then the last
12647 character of the passphrase would be CR which would then enter the first
12651 *) Added the new `Includes OpenSSL Cryptography Software' button as
12652 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
12653 button and can be used by applications based on OpenSSL to show the
12654 relationship to the OpenSSL project.
12655 [Ralf S. Engelschall]
12657 *) Remove confusing variables in function signatures in files
12658 ssl/ssl_lib.c and ssl/ssl.h.
12659 [Lennart Bong <lob@kulthea.stacken.kth.se>]
12661 *) Don't install bss_file.c under PREFIX/include/
12662 [Lennart Bong <lob@kulthea.stacken.kth.se>]
12664 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
12665 functions that return function pointers and has support for NT specific
12666 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
12667 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
12668 unsigned to signed types: this was killing the Win32 compile.
12671 *) Add new certificate file to stack functions,
12672 SSL_add_dir_cert_subjects_to_stack() and
12673 SSL_add_file_cert_subjects_to_stack(). These largely supplant
12674 SSL_load_client_CA_file(), and can be used to add multiple certs easily
12675 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
12676 This means that Apache-SSL and similar packages don't have to mess around
12677 to add as many CAs as they want to the preferred list.
12680 *) Experiment with doxygen documentation. Currently only partially applied to
12682 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
12683 openssl.doxy as the configuration file.
12686 *) Get rid of remaining C++-style comments which strict C compilers hate.
12687 [Ralf S. Engelschall, pointed out by Carlos Amengual]
12689 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
12690 compiled in by default: it has problems with large keys.
12693 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
12694 DH private keys and/or callback functions which directly correspond to
12695 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
12696 is needed for applications which have to configure certificates on a
12697 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
12699 For the RSA certificate situation is makes no difference, but
12700 for the DSA certificate situation this fixes the "no shared cipher"
12701 problem where the OpenSSL cipher selection procedure failed because the
12702 temporary keys were not overtaken from the context and the API provided
12703 no way to reconfigure them.
12704 The new functions now let applications reconfigure the stuff and they
12705 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
12706 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
12707 non-public-API function ssl_cert_instantiate() is used as a helper
12708 function and also to reduce code redundancy inside ssl_rsa.c.
12709 [Ralf S. Engelschall]
12711 *) Move s_server -dcert and -dkey options out of the undocumented feature
12712 area because they are useful for the DSA situation and should be
12713 recognized by the users.
12714 [Ralf S. Engelschall]
12716 *) Fix the cipher decision scheme for export ciphers: the export bits are
12717 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
12718 SSL_EXP_MASK. So, the original variable has to be used instead of the
12719 already masked variable.
12720 [Richard Levitte <levitte@stacken.kth.se>]
12722 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
12723 [Richard Levitte <levitte@stacken.kth.se>]
12725 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
12726 from `int' to `unsigned int' because it's a length and initialized by
12727 EVP_DigestFinal() which expects an `unsigned int *'.
12728 [Richard Levitte <levitte@stacken.kth.se>]
12730 *) Don't hard-code path to Perl interpreter on shebang line of Configure
12731 script. Instead use the usual Shell->Perl transition trick.
12732 [Ralf S. Engelschall]
12734 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
12735 (in addition to RSA certificates) to match the behaviour of `openssl dsa
12736 -noout -modulus' as it's already the case for `openssl rsa -noout
12737 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
12738 currently the public key is printed (a decision which was already done by
12739 `openssl dsa -modulus' in the past) which serves a similar purpose.
12740 Additionally the NO_RSA no longer completely removes the whole -modulus
12741 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
12743 [Ralf S. Engelschall]
12745 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
12746 BIO. See the source (crypto/evp/bio_ok.c) for more info.
12747 [Arne Ansper <arne@ats.cyber.ee>]
12749 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
12750 to be added. Now both 'req' and 'ca' can use new objects defined in the
12754 *) Add cool BIO that does syslog (or event log on NT).
12755 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
12757 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
12758 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
12759 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
12760 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
12763 *) Add preliminary config info for new extension code.
12766 *) Make RSA_NO_PADDING really use no padding.
12767 [Ulf Moeller <ulf@fitug.de>]
12769 *) Generate errors when private/public key check is done.
12772 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
12773 for some CRL extensions and new objects added.
12776 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
12777 key usage extension and fuller support for authority key id.
12780 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
12781 padding method for RSA, which is recommended for new applications in PKCS
12782 #1 v2.0 (RFC 2437, October 1998).
12783 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
12784 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
12785 against Bleichbacher's attack on RSA.
12786 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
12789 *) Updates to the new SSL compression code
12790 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12792 *) Fix so that the version number in the master secret, when passed
12793 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
12794 (because the server will not accept higher), that the version number
12795 is 0x03,0x01, not 0x03,0x00
12796 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12798 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
12799 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
12800 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
12803 *) Support for RAW extensions where an arbitrary extension can be
12804 created by including its DER encoding. See apps/openssl.cnf for
12808 *) Make sure latest Perl versions don't interpret some generated C array
12809 code as Perl array code in the crypto/err/err_genc.pl script.
12810 [Lars Weber <3weber@informatik.uni-hamburg.de>]
12812 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
12813 not many people have the assembler. Various Win32 compilation fixes and
12814 update to the INSTALL.W32 file with (hopefully) more accurate Win32
12815 build instructions.
12818 *) Modify configure script 'Configure' to automatically create crypto/date.h
12819 file under Win32 and also build pem.h from pem.org. New script
12820 util/mkfiles.pl to create the MINFO file on environments that can't do a
12821 'make files': perl util/mkfiles.pl >MINFO should work.
12824 *) Major rework of DES function declarations, in the pursuit of correctness
12825 and purity. As a result, many evil casts evaporated, and some weirdness,
12826 too. You may find this causes warnings in your code. Zapping your evil
12827 casts will probably fix them. Mostly.
12830 *) Fix for a typo in asn1.h. Bug fix to object creation script
12831 obj_dat.pl. It considered a zero in an object definition to mean
12832 "end of object": none of the objects in objects.h have any zeros
12833 so it wasn't spotted.
12834 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
12836 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
12837 Masking (CBCM). In the absence of test vectors, the best I have been able
12838 to do is check that the decrypt undoes the encrypt, so far. Send me test
12839 vectors if you have them.
12842 *) Correct calculation of key length for export ciphers (too much space was
12843 allocated for null ciphers). This has not been tested!
12846 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
12847 message is now correct (it understands "crypto" and "ssl" on its
12848 command line). There is also now an "update" option. This will update
12849 the util/ssleay.num and util/libeay.num files with any new functions.
12851 perl util/mkdef.pl crypto ssl update
12852 it will update them.
12855 *) Overhauled the Perl interface (perl/*):
12856 - ported BN stuff to OpenSSL's different BN library
12857 - made the perl/ source tree CVS-aware
12858 - renamed the package from SSLeay to OpenSSL (the files still contain
12859 their history because I've copied them in the repository)
12860 - removed obsolete files (the test scripts will be replaced
12861 by better Test::Harness variants in the future)
12862 [Ralf S. Engelschall]
12864 *) First cut for a very conservative source tree cleanup:
12865 1. merge various obsolete readme texts into doc/ssleay.txt
12866 where we collect the old documents and readme texts.
12867 2. remove the first part of files where I'm already sure that we no
12868 longer need them because of three reasons: either they are just temporary
12869 files which were left by Eric or they are preserved original files where
12870 I've verified that the diff is also available in the CVS via "cvs diff
12871 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
12872 the crypto/md/ stuff).
12873 [Ralf S. Engelschall]
12875 *) More extension code. Incomplete support for subject and issuer alt
12876 name, issuer and authority key id. Change the i2v function parameters
12877 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
12878 what that's for :-) Fix to ASN1 macro which messed up
12879 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
12882 *) Preliminary support for ENUMERATED type. This is largely copied from the
12886 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
12887 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12889 *) Make sure `make rehash' target really finds the `openssl' program.
12890 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12892 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
12893 like to hear about it if this slows down other processors.
12896 *) Add CygWin32 platform information to Configure script.
12897 [Alan Batie <batie@aahz.jf.intel.com>]
12899 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
12900 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
12902 *) New program nseq to manipulate netscape certificate sequences
12905 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
12909 *) Fixes to BN code. Previously the default was to define BN_RECURSION
12910 but the BN code had some problems that would cause failures when
12911 doing certificate verification and some other functions.
12912 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12914 *) Add ASN1 and PEM code to support netscape certificate sequences.
12917 *) Add ASN1 and PEM code to support netscape certificate sequences.
12920 *) Add several PKIX and private extended key usage OIDs.
12923 *) Modify the 'ca' program to handle the new extension code. Modify
12924 openssl.cnf for new extension format, add comments.
12927 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
12928 and add a sample to openssl.cnf so req -x509 now adds appropriate
12932 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
12933 error code, add initial support to X509_print() and x509 application.
12936 *) Takes a deep breath and start adding X509 V3 extension support code. Add
12937 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
12938 stuff is currently isolated and isn't even compiled yet.
12941 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
12942 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
12943 Removed the versions check from X509 routines when loading extensions:
12944 this allows certain broken certificates that don't set the version
12945 properly to be processed.
12948 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
12949 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
12950 can still be regenerated with "make depend".
12953 *) Spelling mistake in C version of CAST-128.
12954 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
12956 *) Changes to the error generation code. The perl script err-code.pl
12957 now reads in the old error codes and retains the old numbers, only
12958 adding new ones if necessary. It also only changes the .err files if new
12959 codes are added. The makefiles have been modified to only insert errors
12960 when needed (to avoid needlessly modifying header files). This is done
12961 by only inserting errors if the .err file is newer than the auto generated
12962 C file. To rebuild all the error codes from scratch (the old behaviour)
12963 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
12964 or delete all the .err files.
12967 *) CAST-128 was incorrectly implemented for short keys. The C version has
12968 been fixed, but is untested. The assembler versions are also fixed, but
12969 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
12970 to regenerate it if needed.
12971 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
12972 Hagino <itojun@kame.net>]
12974 *) File was opened incorrectly in randfile.c.
12975 [Ulf Möller <ulf@fitug.de>]
12977 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
12978 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
12979 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
12980 al: it's just almost always a UTCTime. Note this patch adds new error
12981 codes so do a "make errors" if there are problems.
12984 *) Correct Linux 1 recognition in config.
12985 [Ulf Möller <ulf@fitug.de>]
12987 *) Remove pointless MD5 hash when using DSA keys in ca.
12988 [Anonymous <nobody@replay.com>]
12990 *) Generate an error if given an empty string as a cert directory. Also
12991 generate an error if handed NULL (previously returned 0 to indicate an
12992 error, but didn't set one).
12993 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
12995 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
12998 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
12999 parameters. This was causing a warning which killed off the Win32 compile.
13002 *) Remove C++ style comments from crypto/bn/bn_local.h.
13003 [Neil Costigan <neil.costigan@celocom.com>]
13005 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
13006 based on a text string, looking up short and long names and finally
13007 "dot" format. The "dot" format stuff didn't work. Added new function
13008 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
13009 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
13010 OID is not part of the table.
13013 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
13014 X509_LOOKUP_by_alias().
13017 *) Sort openssl functions by name.
13020 *) Get the gendsa program working (hopefully) and add it to app list. Remove
13021 encryption from sample DSA keys (in case anyone is interested the password
13025 *) Make _all_ *_free functions accept a NULL pointer.
13026 [Frans Heymans <fheymans@isaserver.be>]
13028 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
13030 [Anonymous <nobody@replay.com>]
13032 *) s_server should send the CAfile as acceptable CAs, not its own cert.
13033 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13035 *) Don't blow it for numeric -newkey arguments to apps/req.
13036 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13038 *) Temp key "for export" tests were wrong in s3_srvr.c.
13039 [Anonymous <nobody@replay.com>]
13041 *) Add prototype for temp key callback functions
13042 SSL_CTX_set_tmp_{rsa,dh}_callback().
13045 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
13046 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
13049 *) X509_name_add_entry() freed the wrong thing after an error.
13050 [Arne Ansper <arne@ats.cyber.ee>]
13052 *) rsa_eay.c would attempt to free a NULL context.
13053 [Arne Ansper <arne@ats.cyber.ee>]
13055 *) BIO_s_socket() had a broken should_retry() on Windoze.
13056 [Arne Ansper <arne@ats.cyber.ee>]
13058 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
13059 [Arne Ansper <arne@ats.cyber.ee>]
13061 *) Make sure the already existing X509_STORE->depth variable is initialized
13062 in X509_STORE_new(), but document the fact that this variable is still
13063 unused in the certificate verification process.
13064 [Ralf S. Engelschall]
13066 *) Fix the various library and apps files to free up pkeys obtained from
13067 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
13070 *) Fix reference counting in X509_PUBKEY_get(). This makes
13071 demos/maurice/example2.c work, amongst others, probably.
13072 [Steve Henson and Ben Laurie]
13074 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
13075 `openssl' and second, the shortcut symlinks for the `openssl <command>'
13076 are no longer created. This way we have a single and consistent command
13077 line interface `openssl <command>', similar to `cvs <command>'.
13078 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
13080 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
13081 BIT STRING wrapper always have zero unused bits.
13084 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
13087 *) Make the top-level INSTALL documentation easier to understand.
13090 *) Makefiles updated to exit if an error occurs in a sub-directory
13091 make (including if user presses ^C) [Paul Sutton]
13093 *) Make Montgomery context stuff explicit in RSA data structure.
13096 *) Fix build order of pem and err to allow for generated pem.h.
13099 *) Fix renumbering bug in X509_NAME_delete_entry().
13102 *) Enhanced the err-ins.pl script so it makes the error library number
13103 global and can add a library name. This is needed for external ASN1 and
13104 other error libraries.
13107 *) Fixed sk_insert which never worked properly.
13110 *) Fix ASN1 macros so they can handle indefinite length constructed
13111 EXPLICIT tags. Some non standard certificates use these: they can now
13115 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
13116 into a single doc/ssleay.txt bundle. This way the information is still
13117 preserved but no longer messes up this directory. Now it's new room for
13118 the new set of documentation files.
13119 [Ralf S. Engelschall]
13121 *) SETs were incorrectly DER encoded. This was a major pain, because they
13122 shared code with SEQUENCEs, which aren't coded the same. This means that
13123 almost everything to do with SETs or SEQUENCEs has either changed name or
13124 number of arguments.
13125 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
13127 *) Fix test data to work with the above.
13130 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
13131 was already fixed by Eric for 0.9.1 it seems.
13132 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
13134 *) Autodetect FreeBSD3.
13137 *) Fix various bugs in Configure. This affects the following platforms:
13141 unixware-2.0-pentium
13145 *) Eliminate generated files from CVS. Reorder tests to regenerate files
13146 before they are needed.
13149 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
13153 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
13155 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
13156 changed SSLeay to OpenSSL in version strings.
13157 [Ralf S. Engelschall]
13159 *) Some fixups to the top-level documents.
13162 *) Fixed the nasty bug where rsaref.h was not found under compile-time
13163 because the symlink to include/ was missing.
13164 [Ralf S. Engelschall]
13166 *) Incorporated the popular no-RSA/DSA-only patches
13167 which allow to compile a RSA-free SSLeay.
13168 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
13170 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
13171 when "ssleay" is still not found.
13172 [Ralf S. Engelschall]
13174 *) Added more platforms to Configure: Cray T3E, HPUX 11,
13175 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
13177 *) Updated the README file.
13178 [Ralf S. Engelschall]
13180 *) Added various .cvsignore files in the CVS repository subdirs
13181 to make a "cvs update" really silent.
13182 [Ralf S. Engelschall]
13184 *) Recompiled the error-definition header files and added
13185 missing symbols to the Win32 linker tables.
13186 [Ralf S. Engelschall]
13188 *) Cleaned up the top-level documents;
13189 o new files: CHANGES and LICENSE
13190 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
13191 o merged COPYRIGHT into LICENSE
13192 o removed obsolete TODO file
13193 o renamed MICROSOFT to INSTALL.W32
13194 [Ralf S. Engelschall]
13196 *) Removed dummy files from the 0.9.1b source tree:
13197 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
13198 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
13199 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
13200 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
13201 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
13202 [Ralf S. Engelschall]
13204 *) Added various platform portability fixes.
13207 *) The Genesis of the OpenSSL rpject:
13208 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
13209 Young and Tim J. Hudson created while they were working for C2Net until
13211 [The OpenSSL Project]
13214 Changes between 0.9.0b and 0.9.1b [not released]
13216 *) Updated a few CA certificates under certs/
13219 *) Changed some BIGNUM api stuff.
13222 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
13223 DGUX x86, Linux Alpha, etc.
13226 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
13227 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
13231 *) Add -strparse option to asn1pars program which parses nested
13233 [Dr Stephen Henson <shenson@bigfoot.com>]
13235 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
13238 *) DSA fix for "ca" program.
13241 *) Added "-genkey" option to "dsaparam" program.
13244 *) Added RIPE MD160 (rmd160) message digest.
13247 *) Added -a (all) option to "ssleay version" command.
13250 *) Added PLATFORM define which is the id given to Configure.
13253 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
13256 *) Extended the ASN.1 parser routines.
13259 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
13262 *) Added a BN_CTX to the BN library.
13265 *) Fixed the weak key values in DES library
13268 *) Changed API in EVP library for cipher aliases.
13271 *) Added support for RC2/64bit cipher.
13274 *) Converted the lhash library to the crypto/mem.c functions.
13277 *) Added more recognized ASN.1 object ids.
13280 *) Added more RSA padding checks for SSL/TLS.
13283 *) Added BIO proxy/filter functionality.
13286 *) Added extra_certs to SSL_CTX which can be used
13287 send extra CA certificates to the client in the CA cert chain sending
13288 process. It can be configured with SSL_CTX_add_extra_chain_cert().
13291 *) Now Fortezza is denied in the authentication phase because
13292 this is key exchange mechanism is not supported by SSLeay at all.
13295 *) Additional PKCS1 checks.
13298 *) Support the string "TLSv1" for all TLS v1 ciphers.
13301 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
13302 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
13305 *) Fixed a few memory leaks.
13308 *) Fixed various code and comment typos.
13311 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
13312 bytes sent in the client random.
13313 [Edward Bishop <ebishop@spyglass.com>]