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 *) Use SHA256 as the default digest for TS query in the ts app.
15 *) Change PBKDF2 to conform to SP800-132 instead of the older PKCS5 RFC2898.
16 This checks that the salt length is at least 128 bits, the derived key
17 length is at least 112 bits, and that the iteration count is at least 1000.
18 For backwards compatibility these checks are disabled by default in the
19 default provider, but are enabled by default in the fips provider.
20 To enable or disable these checks use the control
21 EVP_KDF_CTRL_SET_PBKDF2_PKCS5_MODE.
24 *) Default cipher lists/suites are now avaialble via a function, the
25 #defines are deprecated.
28 *) Add target VC-WIN32-UWP, VC-WIN64A-UWP, VC-WIN32-ARM-UWP and
29 VC-WIN64-ARM-UWP in Windows OneCore target for making building libraries
30 for Windows Store apps easier. Also, the "no-uplink" option has been added.
33 *) Join the directories crypto/x509 and crypto/x509v3
36 *) Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
37 This changes the size when using the genpkey app when no size is given. It
38 fixes an omission in earlier changes that changed all RSA, DSA and DH
39 generation apps to use 2048 bits by default.
42 *) Added command 'openssl kdf' that uses the EVP_KDF API.
45 *) Added command 'openssl mac' that uses the EVP_MAC API.
48 *) Added OPENSSL_info() to get diverse built-in OpenSSL data, such
49 as default directories. Also added the command 'openssl info'
50 for scripting purposes.
53 *) The functions AES_ige_encrypt() and AES_bi_ige_encrypt() have been
54 deprecated. These undocumented functions were never integrated into the EVP
55 layer and implement the AES Infinite Garble Extension (IGE) mode and AES
56 Bi-directional IGE mode. These modes were never formally standardised and
57 usage of these functions is believed to be very small. In particular
58 AES_bi_ige_encrypt() has a known bug. It accepts 2 AES keys, but only one
59 is ever used. The security implications are believed to be minimal, but
60 this issue was never fixed for backwards compatibility reasons. New code
61 should not use these modes.
64 *) Add prediction resistance to the DRBG reseeding process.
67 *) Limit the number of blocks in a data unit for AES-XTS to 2^20 as
68 mandated by IEEE Std 1619-2018.
71 *) Added newline escaping functionality to a filename when using openssl dgst.
72 This output format is to replicate the output format found in the '*sum'
73 checksum programs. This aims to preserve backward compatibility.
74 [Matt Eaton, Richard Levitte, and Paul Dale]
76 *) Removed the heartbeat message in DTLS feature, as it has very
77 little usage and doesn't seem to fulfill a valuable purpose.
78 The configuration option is now deprecated.
81 *) Changed the output of 'openssl {digestname} < file' to display the
82 digest name in its output.
85 *) Added a new generic trace API which provides support for enabling
86 instrumentation through trace output. This feature is mainly intended
87 as an aid for developers and is disabled by default. To utilize it,
88 OpenSSL needs to be configured with the `enable-trace` option.
90 If the tracing API is enabled, the application can activate trace output
91 by registering BIOs as trace channels for a number of tracing and debugging
94 The 'openssl' application has been expanded to enable any of the types
95 available via environment variables defined by the user, and serves as
96 one possible example on how to use this functionality.
97 [Richard Levitte & Matthias St. Pierre]
99 *) Added build tests for C++. These are generated files that only do one
100 thing, to include one public OpenSSL head file each. This tests that
101 the public header files can be usefully included in a C++ application.
103 This test isn't enabled by default. It can be enabled with the option
104 'enable-buildtest-c++'.
107 *) Add Single Step KDF (EVP_KDF_SS) to EVP_KDF.
110 *) Add KMAC to EVP_MAC.
113 *) Added property based algorithm implementation selection framework to
117 *) Added SCA hardening for modular field inversion in EC_GROUP through
118 a new dedicated field_inv() pointer in EC_METHOD.
119 This also addresses a leakage affecting conversions from projective
120 to affine coordinates.
121 [Billy Bob Brumley, Nicola Tuveri]
123 *) Added EVP_KDF, an EVP layer KDF API, to simplify adding KDF and PRF
124 implementations. This includes an EVP_PKEY to EVP_KDF bridge for
125 those algorithms that were already supported through the EVP_PKEY API
126 (scrypt, TLS1 PRF and HKDF). The low-level KDF functions for PBKDF2
127 and scrypt are now wrappers that call EVP_KDF.
130 *) Build devcrypto engine as a dynamic engine.
133 *) Add keyed BLAKE2 to EVP_MAC.
136 *) Fix a bug in the computation of the endpoint-pair shared secret used
137 by DTLS over SCTP. This breaks interoperability with older versions
138 of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime
139 switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling
140 interoperability with such broken implementations. However, enabling
141 this switch breaks interoperability with correct implementations.
143 *) Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
144 re-used X509_PUBKEY object if the second PUBKEY is malformed.
147 *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
150 *) Change the license to the Apache License v2.0.
153 *) Change the possible version information given with OPENSSL_API_COMPAT.
154 It may be a pre-3.0.0 style numerical version number as it was defined
155 in 1.1.0, and it may also simply take the major version number.
157 Because of the version numbering of pre-3.0.0 releases, the values 0,
158 1 and 2 are equivalent to 0x00908000L (0.9.8), 0x10000000L (1.0.0) and
159 0x10100000L (1.1.0), respectively.
162 *) Switch to a new version scheme using three numbers MAJOR.MINOR.PATCH.
164 o Major releases (indicated by incrementing the MAJOR release number)
165 may introduce incompatible API/ABI changes.
166 o Minor releases (indicated by incrementing the MINOR release number)
167 may introduce new features but retain API/ABI compatibility.
168 o Patch releases (indicated by incrementing the PATCH number)
169 are intended for bug fixes and other improvements of existing
170 features only (like improving performance or adding documentation)
171 and retain API/ABI compatibility.
174 *) Add support for RFC5297 SIV mode (siv128), including AES-SIV.
177 *) Remove the 'dist' target and add a tarball building script. The
178 'dist' target has fallen out of use, and it shouldn't be
179 necessary to configure just to create a source distribution.
182 *) Recreate the OS390-Unix config target. It no longer relies on a
183 special script like it did for OpenSSL pre-1.1.0.
186 *) Instead of having the source directories listed in Configure, add
187 a 'build.info' keyword SUBDIRS to indicate what sub-directories to
191 *) Add GMAC to EVP_MAC.
194 *) Ported the HMAC, CMAC and SipHash EVP_PKEY_METHODs to EVP_MAC.
197 *) Added EVP_MAC, an EVP layer MAC API, to simplify adding MAC
198 implementations. This includes a generic EVP_PKEY to EVP_MAC bridge,
199 to facilitate the continued use of MACs through raw private keys in
200 functionality such as EVP_DigestSign* and EVP_DigestVerify*.
203 *) Deprecate ECDH_KDF_X9_62() and mark its replacement as internal. Users
204 should use the EVP interface instead (EVP_PKEY_CTX_set_ecdh_kdf_type).
207 *) Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for
208 the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names
209 are retained for backwards compatibility.
212 *) AES-XTS mode now enforces that its two keys are different to mitigate
213 the attacked described in "Efficient Instantiations of Tweakable
214 Blockciphers and Refinements to Modes OCB and PMAC" by Phillip Rogaway.
215 Details of this attack can be obtained from:
216 http://web.cs.ucdavis.edu/%7Erogaway/papers/offsets.pdf
219 *) Rename the object files, i.e. give them other names than in previous
220 versions. Their names now include the name of the final product, as
221 well as its type mnemonic (bin, lib, shlib).
224 *) Added new option for 'openssl list', '-objects', which will display the
225 list of built in objects, i.e. OIDs with names.
228 *) Added support for Linux Kernel TLS data-path. The Linux Kernel data-path
229 improves application performance by removing data copies and providing
230 applications with zero-copy system calls such as sendfile and splice.
233 Changes between 1.1.1a and 1.1.1b [xx XXX xxxx]
235 *) Change the info callback signals for the start and end of a post-handshake
236 message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START
237 and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get
238 confused by this and assume that a TLSv1.2 renegotiation has started. This
239 can break KeyUpdate handling. Instead we no longer signal the start and end
240 of a post handshake message exchange (although the messages themselves are
241 still signalled). This could break some applications that were expecting
242 the old signals. However without this KeyUpdate is not usable for many
246 Changes between 1.1.1 and 1.1.1a [20 Nov 2018]
248 *) Timing vulnerability in DSA signature generation
250 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
251 timing side channel attack. An attacker could use variations in the signing
252 algorithm to recover the private key.
254 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
258 *) Timing vulnerability in ECDSA signature generation
260 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
261 timing side channel attack. An attacker could use variations in the signing
262 algorithm to recover the private key.
264 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
268 *) Fixed the issue that RAND_add()/RAND_seed() silently discards random input
269 if its length exceeds 4096 bytes. The limit has been raised to a buffer size
270 of two gigabytes and the error handling improved.
272 This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been
273 categorized as a normal bug, not a security issue, because the DRBG reseeds
274 automatically and is fully functional even without additional randomness
275 provided by the application.
277 Changes between 1.1.0i and 1.1.1 [11 Sep 2018]
279 *) Add a new ClientHello callback. Provides a callback interface that gives
280 the application the ability to adjust the nascent SSL object at the
281 earliest stage of ClientHello processing, immediately after extensions have
282 been collected but before they have been processed. In particular, this
283 callback can adjust the supported TLS versions in response to the contents
287 *) Add SM2 base algorithm support.
290 *) s390x assembly pack: add (improved) hardware-support for the following
291 cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb,
292 aes-cfb/cfb8, aes-ecb.
295 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
296 parameter is no longer accepted, as it leads to a corrupt table. NULL
297 pem_str is reserved for alias entries only.
300 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
301 step for prime curves. The new implementation is based on formulae from
302 differential addition-and-doubling in homogeneous projective coordinates
303 from Izu-Takagi "A fast parallel elliptic curve multiplication resistant
304 against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves
305 and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified
306 to work in projective coordinates.
307 [Billy Bob Brumley, Nicola Tuveri]
309 *) Change generating and checking of primes so that the error rate of not
310 being prime depends on the intended use based on the size of the input.
311 For larger primes this will result in more rounds of Miller-Rabin.
312 The maximal error rate for primes with more than 1080 bits is lowered
314 [Kurt Roeckx, Annie Yousar]
316 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
319 *) The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
320 moving between systems, and to avoid confusion when a Windows build is
321 done with mingw vs with MSVC. For POSIX installs, there's still a
322 symlink or copy named 'tsget' to avoid that confusion as well.
325 *) Revert blinding in ECDSA sign and instead make problematic addition
326 length-invariant. Switch even to fixed-length Montgomery multiplication.
329 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
330 step for binary curves. The new implementation is based on formulae from
331 differential addition-and-doubling in mixed Lopez-Dahab projective
332 coordinates, modified to independently blind the operands.
333 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
335 *) Add a scaffold to optionally enhance the Montgomery ladder implementation
336 for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing
337 EC_METHODs to implement their own specialized "ladder step", to take
338 advantage of more favorable coordinate systems or more efficient
339 differential addition-and-doubling algorithms.
340 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
342 *) Modified the random device based seed sources to keep the relevant
343 file descriptors open rather than reopening them on each access.
344 This allows such sources to operate in a chroot() jail without
345 the associated device nodes being available. This behaviour can be
346 controlled using RAND_keep_random_devices_open().
349 *) Numerous side-channel attack mitigations have been applied. This may have
350 performance impacts for some algorithms for the benefit of improved
351 security. Specific changes are noted in this change log by their respective
355 *) AIX shared library support overhaul. Switch to AIX "natural" way of
356 handling shared libraries, which means collecting shared objects of
357 different versions and bitnesses in one common archive. This allows to
358 mitigate conflict between 1.0 and 1.1 side-by-side installations. It
359 doesn't affect the way 3rd party applications are linked, only how
360 multi-version installation is managed.
363 *) Make ec_group_do_inverse_ord() more robust and available to other
364 EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
365 mitigations are applied to the fallback BN_mod_inverse().
366 When using this function rather than BN_mod_inverse() directly, new
367 EC cryptosystem implementations are then safer-by-default.
370 *) Add coordinate blinding for EC_POINT and implement projective
371 coordinate blinding for generic prime curves as a countermeasure to
372 chosen point SCA attacks.
373 [Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley]
375 *) Add blinding to ECDSA and DSA signatures to protect against side channel
376 attacks discovered by Keegan Ryan (NCC Group).
379 *) Enforce checking in the pkeyutl command line app to ensure that the input
380 length does not exceed the maximum supported digest length when performing
381 a sign, verify or verifyrecover operation.
384 *) SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
385 I/O in combination with something like select() or poll() will hang. This
386 can be turned off again using SSL_CTX_clear_mode().
387 Many applications do not properly handle non-application data records, and
388 TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
389 around the problems in those applications, but can also break some.
390 It's recommended to read the manpages about SSL_read(), SSL_write(),
391 SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
392 SSL_CTX_set_read_ahead() again.
395 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
396 now allow empty (zero character) pass phrases.
399 *) Apply blinding to binary field modular inversion and remove patent
400 pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
403 *) Deprecate ec2_mult.c and unify scalar multiplication code paths for
404 binary and prime elliptic curves.
407 *) Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
408 constant time fixed point multiplication.
411 *) Revise elliptic curve scalar multiplication with timing attack
412 defenses: ec_wNAF_mul redirects to a constant time implementation
413 when computing fixed point and variable point multiplication (which
414 in OpenSSL are mostly used with secret scalars in keygen, sign,
415 ECDH derive operations).
416 [Billy Bob Brumley, Nicola Tuveri, Cesar Pereida GarcÃa,
419 *) Updated CONTRIBUTING
422 *) Updated DRBG / RAND to request nonce and additional low entropy
423 randomness from the system.
424 [Matthias St. Pierre]
426 *) Updated 'openssl rehash' to use OpenSSL consistent default.
429 *) Moved the load of the ssl_conf module to libcrypto, which helps
430 loading engines that libssl uses before libssl is initialised.
433 *) Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
436 *) Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
437 [Ingo Schwarze, Rich Salz]
439 *) Added output of accepting IP address and port for 'openssl s_server'
442 *) Added a new API for TLSv1.3 ciphersuites:
443 SSL_CTX_set_ciphersuites()
444 SSL_set_ciphersuites()
447 *) Memory allocation failures consistenly add an error to the error
451 *) Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
452 in libcrypto when run as setuid/setgid.
455 *) Load any config file by default when libssl is used.
458 *) Added new public header file <openssl/rand_drbg.h> and documentation
459 for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
460 [Matthias St. Pierre]
462 *) QNX support removed (cannot find contributors to get their approval
463 for the license change).
466 *) TLSv1.3 replay protection for early data has been implemented. See the
467 SSL_read_early_data() man page for further details.
470 *) Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
471 configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
472 below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
473 In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
474 would otherwise inadvertently disable all TLSv1.3 ciphersuites the
475 configuration has been separated out. See the ciphers man page or the
476 SSL_CTX_set_ciphersuites() man page for more information.
479 *) On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
480 in responder mode now supports the new "-multi" option, which
481 spawns the specified number of child processes to handle OCSP
482 requests. The "-timeout" option now also limits the OCSP
483 responder's patience to wait to receive the full client request
484 on a newly accepted connection. Child processes are respawned
485 as needed, and the CA index file is automatically reloaded
486 when changed. This makes it possible to run the "ocsp" responder
487 as a long-running service, making the OpenSSL CA somewhat more
488 feature-complete. In this mode, most diagnostic messages logged
489 after entering the event loop are logged via syslog(3) rather than
493 *) Added support for X448 and Ed448. Heavily based on original work by
497 *) Extend OSSL_STORE with capabilities to search and to narrow the set of
498 objects loaded. This adds the functions OSSL_STORE_expect() and
499 OSSL_STORE_find() as well as needed tools to construct searches and
500 get the search data out of them.
503 *) Support for TLSv1.3 added. Note that users upgrading from an earlier
504 version of OpenSSL should review their configuration settings to ensure
505 that they are still appropriate for TLSv1.3. For further information see:
506 https://wiki.openssl.org/index.php/TLS1.3
509 *) Grand redesign of the OpenSSL random generator
511 The default RAND method now utilizes an AES-CTR DRBG according to
512 NIST standard SP 800-90Ar1. The new random generator is essentially
513 a port of the default random generator from the OpenSSL FIPS 2.0
514 object module. It is a hybrid deterministic random bit generator
515 using an AES-CTR bit stream and which seeds and reseeds itself
516 automatically using trusted system entropy sources.
518 Some of its new features are:
519 o Support for multiple DRBG instances with seed chaining.
520 o The default RAND method makes use of a DRBG.
521 o There is a public and private DRBG instance.
522 o The DRBG instances are fork-safe.
523 o Keep all global DRBG instances on the secure heap if it is enabled.
524 o The public and private DRBG instance are per thread for lock free
526 [Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre]
528 *) Changed Configure so it only says what it does and doesn't dump
529 so much data. Instead, ./configdata.pm should be used as a script
530 to display all sorts of configuration data.
533 *) Added processing of "make variables" to Configure.
536 *) Added SHA512/224 and SHA512/256 algorithm support.
539 *) The last traces of Netware support, first removed in 1.1.0, have
543 *) Get rid of Makefile.shared, and in the process, make the processing
544 of certain files (rc.obj, or the .def/.map/.opt files produced from
545 the ordinal files) more visible and hopefully easier to trace and
546 debug (or make silent).
549 *) Make it possible to have environment variable assignments as
550 arguments to config / Configure.
553 *) Add multi-prime RSA (RFC 8017) support.
556 *) Add SM3 implemented according to GB/T 32905-2016
557 [ Jack Lloyd <jack.lloyd@ribose.com>,
558 Ronald Tse <ronald.tse@ribose.com>,
559 Erick Borsboom <erick.borsboom@ribose.com> ]
561 *) Add 'Maximum Fragment Length' TLS extension negotiation and support
562 as documented in RFC6066.
563 Based on a patch from Tomasz Moń
564 [Filipe Raimundo da Silva]
566 *) Add SM4 implemented according to GB/T 32907-2016.
567 [ Jack Lloyd <jack.lloyd@ribose.com>,
568 Ronald Tse <ronald.tse@ribose.com>,
569 Erick Borsboom <erick.borsboom@ribose.com> ]
571 *) Reimplement -newreq-nodes and ERR_error_string_n; the
572 original author does not agree with the license change.
575 *) Add ARIA AEAD TLS support.
578 *) Some macro definitions to support VS6 have been removed. Visual
579 Studio 6 has not worked since 1.1.0
582 *) Add ERR_clear_last_mark(), to allow callers to clear the last mark
583 without clearing the errors.
586 *) Add "atfork" functions. If building on a system that without
587 pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application
588 requirements. The RAND facility now uses/requires this.
594 *) The UI API becomes a permanent and integral part of libcrypto, i.e.
595 not possible to disable entirely. However, it's still possible to
596 disable the console reading UI method, UI_OpenSSL() (use UI_null()
599 To disable, configure with 'no-ui-console'. 'no-ui' is still
600 possible to use as an alias. Check at compile time with the
601 macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still
602 possible to check and is an alias for OPENSSL_NO_UI_CONSOLE.
605 *) Add a STORE module, which implements a uniform and URI based reader of
606 stores that can contain keys, certificates, CRLs and numerous other
607 objects. The main API is loosely based on a few stdio functions,
608 and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof,
609 OSSL_STORE_error and OSSL_STORE_close.
610 The implementation uses backends called "loaders" to implement arbitrary
611 URI schemes. There is one built in "loader" for the 'file' scheme.
614 *) Add devcrypto engine. This has been implemented against cryptodev-linux,
615 then adjusted to work on FreeBSD 8.4 as well.
616 Enable by configuring with 'enable-devcryptoeng'. This is done by default
617 on BSD implementations, as cryptodev.h is assumed to exist on all of them.
620 *) Module names can prefixed with OSSL_ or OPENSSL_. This affects
621 util/mkerr.pl, which is adapted to allow those prefixes, leading to
622 error code calls like this:
624 OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER);
626 With this change, we claim the namespaces OSSL and OPENSSL in a manner
627 that can be encoded in C. For the foreseeable future, this will only
629 [Richard Levitte and Tim Hudson]
631 *) Removed BSD cryptodev engine.
634 *) Add a build target 'build_all_generated', to build all generated files
635 and only that. This can be used to prepare everything that requires
636 things like perl for a system that lacks perl and then move everything
637 to that system and do the rest of the build there.
640 *) In the UI interface, make it possible to duplicate the user data. This
641 can be used by engines that need to retain the data for a longer time
642 than just the call where this user data is passed.
645 *) Ignore the '-named_curve auto' value for compatibility of applications
647 [Tomas Mraz <tmraz@fedoraproject.org>]
649 *) Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2
650 bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such
651 alerts across multiple records (some of which could be empty). In practice
652 it make no sense to send an empty alert record, or to fragment one. TLSv1.3
653 prohibts this altogether and other libraries (BoringSSL, NSS) do not
654 support this at all. Supporting it adds significant complexity to the
655 record layer, and its removal is unlikely to cause inter-operability
659 *) Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed
660 with Z. These are meant to replace LONG and ZLONG and to be size safe.
661 The use of LONG and ZLONG is discouraged and scheduled for deprecation
665 *) Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string,
666 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t.
667 [Richard Levitte, Andy Polyakov]
669 *) Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine()
673 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
674 platform rather than 'mingw'.
677 *) The functions X509_STORE_add_cert and X509_STORE_add_crl return
678 success if they are asked to add an object which already exists
679 in the store. This change cascades to other functions which load
680 certificates and CRLs.
683 *) x86_64 assembly pack: annotate code with DWARF CFI directives to
684 facilitate stack unwinding even from assembly subroutines.
687 *) Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN.
688 Also remove OPENSSL_GLOBAL entirely, as it became a no-op.
691 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
692 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
693 which is the minimum version we support.
696 *) Certificate time validation (X509_cmp_time) enforces stricter
697 compliance with RFC 5280. Fractional seconds and timezone offsets
698 are no longer allowed.
701 *) Add support for ARIA
704 *) s_client will now send the Server Name Indication (SNI) extension by
705 default unless the new "-noservername" option is used. The server name is
706 based on the host provided to the "-connect" option unless overridden by
710 *) Add support for SipHash
713 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0
714 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
715 prevent issues where no progress is being made and the peer continually
716 sends unrecognised record types, using up resources processing them.
719 *) 'openssl passwd' can now produce SHA256 and SHA512 based output,
720 using the algorithm defined in
721 https://www.akkadia.org/drepper/SHA-crypt.txt
724 *) Heartbeat support has been removed; the ABI is changed for now.
725 [Richard Levitte, Rich Salz]
727 *) Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
730 *) The RSA "null" method, which was partially supported to avoid patent
731 issues, has been replaced to always returns NULL.
735 Changes between 1.1.0h and 1.1.0i [xx XXX xxxx]
737 *) Client DoS due to large DH parameter
739 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
740 malicious server can send a very large prime value to the client. This will
741 cause the client to spend an unreasonably long period of time generating a
742 key for this prime resulting in a hang until the client has finished. This
743 could be exploited in a Denial Of Service attack.
745 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
749 *) Cache timing vulnerability in RSA Key Generation
751 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
752 a cache timing side channel attack. An attacker with sufficient access to
753 mount cache timing attacks during the RSA key generation process could
754 recover the private key.
756 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
757 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
761 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
762 parameter is no longer accepted, as it leads to a corrupt table. NULL
763 pem_str is reserved for alias entries only.
766 *) Revert blinding in ECDSA sign and instead make problematic addition
767 length-invariant. Switch even to fixed-length Montgomery multiplication.
770 *) Change generating and checking of primes so that the error rate of not
771 being prime depends on the intended use based on the size of the input.
772 For larger primes this will result in more rounds of Miller-Rabin.
773 The maximal error rate for primes with more than 1080 bits is lowered
775 [Kurt Roeckx, Annie Yousar]
777 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
780 *) Add blinding to ECDSA and DSA signatures to protect against side channel
781 attacks discovered by Keegan Ryan (NCC Group).
784 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
785 now allow empty (zero character) pass phrases.
788 *) Certificate time validation (X509_cmp_time) enforces stricter
789 compliance with RFC 5280. Fractional seconds and timezone offsets
790 are no longer allowed.
793 *) Fixed a text canonicalisation bug in CMS
795 Where a CMS detached signature is used with text content the text goes
796 through a canonicalisation process first prior to signing or verifying a
797 signature. This process strips trailing space at the end of lines, converts
798 line terminators to CRLF and removes additional trailing line terminators
799 at the end of a file. A bug in the canonicalisation process meant that
800 some characters, such as form-feed, were incorrectly treated as whitespace
801 and removed. This is contrary to the specification (RFC5485). This fix
802 could mean that detached text data signed with an earlier version of
803 OpenSSL 1.1.0 may fail to verify using the fixed version, or text data
804 signed with a fixed OpenSSL may fail to verify with an earlier version of
805 OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data
806 and use the "-binary" flag (for the "cms" command line application) or set
807 the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()).
810 Changes between 1.1.0g and 1.1.0h [27 Mar 2018]
812 *) Constructed ASN.1 types with a recursive definition could exceed the stack
814 Constructed ASN.1 types with a recursive definition (such as can be found
815 in PKCS7) could eventually exceed the stack given malicious input with
816 excessive recursion. This could result in a Denial Of Service attack. There
817 are no such structures used within SSL/TLS that come from untrusted sources
818 so this is considered safe.
820 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
825 *) Incorrect CRYPTO_memcmp on HP-UX PA-RISC
827 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
828 effectively reduced to only comparing the least significant bit of each
829 byte. This allows an attacker to forge messages that would be considered as
830 authenticated in an amount of tries lower than that guaranteed by the
831 security claims of the scheme. The module can only be compiled by the
832 HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
834 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
839 *) Add a build target 'build_all_generated', to build all generated files
840 and only that. This can be used to prepare everything that requires
841 things like perl for a system that lacks perl and then move everything
842 to that system and do the rest of the build there.
845 *) Backport SSL_OP_NO_RENGOTIATION
847 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
848 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
849 changes this is no longer possible in 1.1.0. Therefore the new
850 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
851 1.1.0 to provide equivalent functionality.
853 Note that if an application built against 1.1.0h headers (or above) is run
854 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
855 accepted but nothing will happen, i.e. renegotiation will not be prevented.
858 *) Removed the OS390-Unix config target. It relied on a script that doesn't
862 *) rsaz_1024_mul_avx2 overflow bug on x86_64
864 There is an overflow bug in the AVX2 Montgomery multiplication procedure
865 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
866 Analysis suggests that attacks against RSA and DSA as a result of this
867 defect would be very difficult to perform and are not believed likely.
868 Attacks against DH1024 are considered just feasible, because most of the
869 work necessary to deduce information about a private key may be performed
870 offline. The amount of resources required for such an attack would be
871 significant. However, for an attack on TLS to be meaningful, the server
872 would have to share the DH1024 private key among multiple clients, which is
873 no longer an option since CVE-2016-0701.
875 This only affects processors that support the AVX2 but not ADX extensions
876 like Intel Haswell (4th generation).
878 This issue was reported to OpenSSL by David Benjamin (Google). The issue
879 was originally found via the OSS-Fuzz project.
883 Changes between 1.1.0f and 1.1.0g [2 Nov 2017]
885 *) bn_sqrx8x_internal carry bug on x86_64
887 There is a carry propagating bug in the x86_64 Montgomery squaring
888 procedure. No EC algorithms are affected. Analysis suggests that attacks
889 against RSA and DSA as a result of this defect would be very difficult to
890 perform and are not believed likely. Attacks against DH are considered just
891 feasible (although very difficult) because most of the work necessary to
892 deduce information about a private key may be performed offline. The amount
893 of resources required for such an attack would be very significant and
894 likely only accessible to a limited number of attackers. An attacker would
895 additionally need online access to an unpatched system using the target
896 private key in a scenario with persistent DH parameters and a private
897 key that is shared between multiple clients.
899 This only affects processors that support the BMI1, BMI2 and ADX extensions
900 like Intel Broadwell (5th generation) and later or AMD Ryzen.
902 This issue was reported to OpenSSL by the OSS-Fuzz project.
906 *) Malformed X.509 IPAddressFamily could cause OOB read
908 If an X.509 certificate has a malformed IPAddressFamily extension,
909 OpenSSL could do a one-byte buffer overread. The most likely result
910 would be an erroneous display of the certificate in text format.
912 This issue was reported to OpenSSL by the OSS-Fuzz project.
916 Changes between 1.1.0e and 1.1.0f [25 May 2017]
918 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
919 platform rather than 'mingw'.
922 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
923 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
924 which is the minimum version we support.
927 Changes between 1.1.0d and 1.1.0e [16 Feb 2017]
929 *) Encrypt-Then-Mac renegotiation crash
931 During a renegotiation handshake if the Encrypt-Then-Mac extension is
932 negotiated where it was not in the original handshake (or vice-versa) then
933 this can cause OpenSSL to crash (dependant on ciphersuite). Both clients
934 and servers are affected.
936 This issue was reported to OpenSSL by Joe Orton (Red Hat).
940 Changes between 1.1.0c and 1.1.0d [26 Jan 2017]
942 *) Truncated packet could crash via OOB read
944 If one side of an SSL/TLS path is running on a 32-bit host and a specific
945 cipher is being used, then a truncated packet can cause that host to
946 perform an out-of-bounds read, usually resulting in a crash.
948 This issue was reported to OpenSSL by Robert Święcki of Google.
952 *) Bad (EC)DHE parameters cause a client crash
954 If a malicious server supplies bad parameters for a DHE or ECDHE key
955 exchange then this can result in the client attempting to dereference a
956 NULL pointer leading to a client crash. This could be exploited in a Denial
959 This issue was reported to OpenSSL by Guido Vranken.
963 *) BN_mod_exp may produce incorrect results on x86_64
965 There is a carry propagating bug in the x86_64 Montgomery squaring
966 procedure. No EC algorithms are affected. Analysis suggests that attacks
967 against RSA and DSA as a result of this defect would be very difficult to
968 perform and are not believed likely. Attacks against DH are considered just
969 feasible (although very difficult) because most of the work necessary to
970 deduce information about a private key may be performed offline. The amount
971 of resources required for such an attack would be very significant and
972 likely only accessible to a limited number of attackers. An attacker would
973 additionally need online access to an unpatched system using the target
974 private key in a scenario with persistent DH parameters and a private
975 key that is shared between multiple clients. For example this can occur by
976 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
977 similar to CVE-2015-3193 but must be treated as a separate problem.
979 This issue was reported to OpenSSL by the OSS-Fuzz project.
983 Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
985 *) ChaCha20/Poly1305 heap-buffer-overflow
987 TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to
988 a DoS attack by corrupting larger payloads. This can result in an OpenSSL
989 crash. This issue is not considered to be exploitable beyond a DoS.
991 This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
995 *) CMS Null dereference
997 Applications parsing invalid CMS structures can crash with a NULL pointer
998 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
999 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
1000 structure callback if an attempt is made to free certain invalid encodings.
1001 Only CHOICE structures using a callback which do not handle NULL value are
1004 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
1008 *) Montgomery multiplication may produce incorrect results
1010 There is a carry propagating bug in the Broadwell-specific Montgomery
1011 multiplication procedure that handles input lengths divisible by, but
1012 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
1013 and DH private keys are impossible. This is because the subroutine in
1014 question is not used in operations with the private key itself and an input
1015 of the attacker's direct choice. Otherwise the bug can manifest itself as
1016 transient authentication and key negotiation failures or reproducible
1017 erroneous outcome of public-key operations with specially crafted input.
1018 Among EC algorithms only Brainpool P-512 curves are affected and one
1019 presumably can attack ECDH key negotiation. Impact was not analyzed in
1020 detail, because pre-requisites for attack are considered unlikely. Namely
1021 multiple clients have to choose the curve in question and the server has to
1022 share the private key among them, neither of which is default behaviour.
1023 Even then only clients that chose the curve will be affected.
1025 This issue was publicly reported as transient failures and was not
1026 initially recognized as a security issue. Thanks to Richard Morgan for
1027 providing reproducible case.
1031 *) Removed automatic addition of RPATH in shared libraries and executables,
1032 as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
1035 Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
1037 *) Fix Use After Free for large message sizes
1039 The patch applied to address CVE-2016-6307 resulted in an issue where if a
1040 message larger than approx 16k is received then the underlying buffer to
1041 store the incoming message is reallocated and moved. Unfortunately a
1042 dangling pointer to the old location is left which results in an attempt to
1043 write to the previously freed location. This is likely to result in a
1044 crash, however it could potentially lead to execution of arbitrary code.
1046 This issue only affects OpenSSL 1.1.0a.
1048 This issue was reported to OpenSSL by Robert Święcki.
1052 Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
1054 *) OCSP Status Request extension unbounded memory growth
1056 A malicious client can send an excessively large OCSP Status Request
1057 extension. If that client continually requests renegotiation, sending a
1058 large OCSP Status Request extension each time, then there will be unbounded
1059 memory growth on the server. This will eventually lead to a Denial Of
1060 Service attack through memory exhaustion. Servers with a default
1061 configuration are vulnerable even if they do not support OCSP. Builds using
1062 the "no-ocsp" build time option are not affected.
1064 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1068 *) SSL_peek() hang on empty record
1070 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
1071 sends an empty record. This could be exploited by a malicious peer in a
1072 Denial Of Service attack.
1074 This issue was reported to OpenSSL by Alex Gaynor.
1078 *) Excessive allocation of memory in tls_get_message_header() and
1079 dtls1_preprocess_fragment()
1081 A (D)TLS message includes 3 bytes for its length in the header for the
1082 message. This would allow for messages up to 16Mb in length. Messages of
1083 this length are excessive and OpenSSL includes a check to ensure that a
1084 peer is sending reasonably sized messages in order to avoid too much memory
1085 being consumed to service a connection. A flaw in the logic of version
1086 1.1.0 means that memory for the message is allocated too early, prior to
1087 the excessive message length check. Due to way memory is allocated in
1088 OpenSSL this could mean an attacker could force up to 21Mb to be allocated
1089 to service a connection. This could lead to a Denial of Service through
1090 memory exhaustion. However, the excessive message length check still takes
1091 place, and this would cause the connection to immediately fail. Assuming
1092 that the application calls SSL_free() on the failed connection in a timely
1093 manner then the 21Mb of allocated memory will then be immediately freed
1094 again. Therefore the excessive memory allocation will be transitory in
1095 nature. This then means that there is only a security impact if:
1097 1) The application does not call SSL_free() in a timely manner in the event
1098 that the connection fails
1100 2) The application is working in a constrained environment where there is
1101 very little free memory
1103 3) The attacker initiates multiple connection attempts such that there are
1104 multiple connections in a state where memory has been allocated for the
1105 connection; SSL_free() has not yet been called; and there is insufficient
1106 memory to service the multiple requests.
1108 Except in the instance of (1) above any Denial Of Service is likely to be
1109 transitory because as soon as the connection fails the memory is
1110 subsequently freed again in the SSL_free() call. However there is an
1111 increased risk during this period of application crashes due to the lack of
1112 memory - which would then mean a more serious Denial of Service.
1114 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1115 (CVE-2016-6307 and CVE-2016-6308)
1118 *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
1119 had to be removed. Primary reason is that vendor assembler can't
1120 assemble our modules with -KPIC flag. As result it, assembly
1121 support, was not even available as option. But its lack means
1122 lack of side-channel resistant code, which is incompatible with
1123 security by todays standards. Fortunately gcc is readily available
1124 prepackaged option, which we firmly point at...
1127 Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
1129 *) Windows command-line tool supports UTF-8 opt-in option for arguments
1130 and console input. Setting OPENSSL_WIN32_UTF8 environment variable
1131 (to any value) allows Windows user to access PKCS#12 file generated
1132 with Windows CryptoAPI and protected with non-ASCII password, as well
1133 as files generated under UTF-8 locale on Linux also protected with
1137 *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites
1138 have been disabled by default and removed from DEFAULT, just like RC4.
1139 See the RC4 item below to re-enable both.
1142 *) The method for finding the storage location for the Windows RAND seed file
1143 has changed. First we check %RANDFILE%. If that is not set then we check
1144 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
1145 all else fails we fall back to C:\.
1148 *) The EVP_EncryptUpdate() function has had its return type changed from void
1149 to int. A return of 0 indicates and error while a return of 1 indicates
1153 *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
1154 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
1155 off the constant time implementation for RSA, DSA and DH have been made
1156 no-ops and deprecated.
1159 *) Windows RAND implementation was simplified to only get entropy by
1160 calling CryptGenRandom(). Various other RAND-related tickets
1162 [Joseph Wylie Yandle, Rich Salz]
1164 *) The stack and lhash API's were renamed to start with OPENSSL_SK_
1165 and OPENSSL_LH_, respectively. The old names are available
1166 with API compatibility. They new names are now completely documented.
1169 *) Unify TYPE_up_ref(obj) methods signature.
1170 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
1171 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
1172 int (instead of void) like all others TYPE_up_ref() methods.
1173 So now these methods also check the return value of CRYPTO_atomic_add(),
1174 and the validity of object reference counter.
1175 [fdasilvayy@gmail.com]
1177 *) With Windows Visual Studio builds, the .pdb files are installed
1178 alongside the installed libraries and executables. For a static
1179 library installation, ossl_static.pdb is the associate compiler
1180 generated .pdb file to be used when linking programs.
1183 *) Remove openssl.spec. Packaging files belong with the packagers.
1186 *) Automatic Darwin/OSX configuration has had a refresh, it will now
1187 recognise x86_64 architectures automatically. You can still decide
1188 to build for a different bitness with the environment variable
1189 KERNEL_BITS (can be 32 or 64), for example:
1191 KERNEL_BITS=32 ./config
1195 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
1196 256 bit AES and HMAC with SHA256.
1199 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only).
1202 *) Triple-DES ciphers have been moved from HIGH to MEDIUM.
1205 *) To enable users to have their own config files and build file templates,
1206 Configure looks in the directory indicated by the environment variable
1207 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
1208 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
1209 name and is used as is.
1212 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
1213 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
1214 X509_CERT_FILE_CTX was removed.
1217 *) "shared" builds are now the default. To create only static libraries use
1218 the "no-shared" Configure option.
1221 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
1222 All of these option have not worked for some while and are fundamental
1226 *) Make various cleanup routines no-ops and mark them as deprecated. Most
1227 global cleanup functions are no longer required because they are handled
1228 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
1229 Explicitly de-initing can cause problems (e.g. where a library that uses
1230 OpenSSL de-inits, but an application is still using it). The affected
1231 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
1232 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
1233 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
1234 COMP_zlib_cleanup().
1237 *) --strict-warnings no longer enables runtime debugging options
1238 such as REF_DEBUG. Instead, debug options are automatically
1239 enabled with '--debug' builds.
1240 [Andy Polyakov, Emilia Käsper]
1242 *) Made DH and DH_METHOD opaque. The structures for managing DH objects
1243 have been moved out of the public header files. New functions for managing
1244 these have been added.
1247 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA
1248 objects have been moved out of the public header files. New
1249 functions for managing these have been added.
1252 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
1253 have been moved out of the public header files. New functions for managing
1254 these have been added.
1257 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
1258 moved out of the public header files. New functions for managing these
1262 *) Removed no-rijndael as a config option. Rijndael is an old name for AES.
1265 *) Removed the mk1mf build scripts.
1268 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
1269 it is always safe to #include a header now.
1272 *) Removed the aged BC-32 config and all its supporting scripts
1275 *) Removed support for Ultrix, Netware, and OS/2.
1278 *) Add support for HKDF.
1279 [Alessandro Ghedini]
1281 *) Add support for blake2b and blake2s
1284 *) Added support for "pipelining". Ciphers that have the
1285 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
1286 encryptions/decryptions simultaneously. There are currently no built-in
1287 ciphers with this property but the expectation is that engines will be able
1288 to offer it to significantly improve throughput. Support has been extended
1289 into libssl so that multiple records for a single connection can be
1290 processed in one go (for >=TLS 1.1).
1293 *) Added the AFALG engine. This is an async capable engine which is able to
1294 offload work to the Linux kernel. In this initial version it only supports
1295 AES128-CBC. The kernel must be version 4.1.0 or greater.
1298 *) OpenSSL now uses a new threading API. It is no longer necessary to
1299 set locking callbacks to use OpenSSL in a multi-threaded environment. There
1300 are two supported threading models: pthreads and windows threads. It is
1301 also possible to configure OpenSSL at compile time for "no-threads". The
1302 old threading API should no longer be used. The functions have been
1303 replaced with "no-op" compatibility macros.
1304 [Alessandro Ghedini, Matt Caswell]
1306 *) Modify behavior of ALPN to invoke callback after SNI/servername
1307 callback, such that updates to the SSL_CTX affect ALPN.
1310 *) Add SSL_CIPHER queries for authentication and key-exchange.
1313 *) Changes to the DEFAULT cipherlist:
1314 - Prefer (EC)DHE handshakes over plain RSA.
1315 - Prefer AEAD ciphers over legacy ciphers.
1316 - Prefer ECDSA over RSA when both certificates are available.
1317 - Prefer TLSv1.2 ciphers/PRF.
1318 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
1322 *) Change the ECC default curve list to be this, in order: x25519,
1323 secp256r1, secp521r1, secp384r1.
1326 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
1327 disabled by default. They can be re-enabled using the
1328 enable-weak-ssl-ciphers option to Configure.
1331 *) If the server has ALPN configured, but supports no protocols that the
1332 client advertises, send a fatal "no_application_protocol" alert.
1333 This behaviour is SHALL in RFC 7301, though it isn't universally
1334 implemented by other servers.
1337 *) Add X25519 support.
1338 Add ASN.1 and EVP_PKEY methods for X25519. This includes support
1339 for public and private key encoding using the format documented in
1340 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
1341 key generation and key derivation.
1343 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
1347 *) Deprecate SRP_VBASE_get_by_user.
1348 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
1349 In order to fix an unavoidable memory leak (CVE-2016-0798),
1350 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
1351 seed, even if the seed is configured.
1353 Users should use SRP_VBASE_get1_by_user instead. Note that in
1354 SRP_VBASE_get1_by_user, caller must free the returned value. Note
1355 also that even though configuring the SRP seed attempts to hide
1356 invalid usernames by continuing the handshake with fake
1357 credentials, this behaviour is not constant time and no strong
1358 guarantees are made that the handshake is indistinguishable from
1359 that of a valid user.
1362 *) Configuration change; it's now possible to build dynamic engines
1363 without having to build shared libraries and vice versa. This
1364 only applies to the engines in engines/, those in crypto/engine/
1365 will always be built into libcrypto (i.e. "static").
1367 Building dynamic engines is enabled by default; to disable, use
1368 the configuration option "disable-dynamic-engine".
1370 The only requirements for building dynamic engines are the
1371 presence of the DSO module and building with position independent
1372 code, so they will also automatically be disabled if configuring
1373 with "disable-dso" or "disable-pic".
1375 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
1376 are also taken away from openssl/opensslconf.h, as they are
1380 *) Configuration change; if there is a known flag to compile
1381 position independent code, it will always be applied on the
1382 libcrypto and libssl object files, and never on the application
1383 object files. This means other libraries that use routines from
1384 libcrypto / libssl can be made into shared libraries regardless
1385 of how OpenSSL was configured.
1387 If this isn't desirable, the configuration options "disable-pic"
1388 or "no-pic" can be used to disable the use of PIC. This will
1389 also disable building shared libraries and dynamic engines.
1392 *) Removed JPAKE code. It was experimental and has no wide use.
1395 *) The INSTALL_PREFIX Makefile variable has been renamed to
1396 DESTDIR. That makes for less confusion on what this variable
1397 is for. Also, the configuration option --install_prefix is
1401 *) Heartbeat for TLS has been removed and is disabled by default
1402 for DTLS; configure with enable-heartbeats. Code that uses the
1403 old #define's might need to be updated.
1404 [Emilia Käsper, Rich Salz]
1406 *) Rename REF_CHECK to REF_DEBUG.
1409 *) New "unified" build system
1411 The "unified" build system is aimed to be a common system for all
1412 platforms we support. With it comes new support for VMS.
1414 This system builds supports building in a different directory tree
1415 than the source tree. It produces one Makefile (for unix family
1416 or lookalikes), or one descrip.mms (for VMS).
1418 The source of information to make the Makefile / descrip.mms is
1419 small files called 'build.info', holding the necessary
1420 information for each directory with source to compile, and a
1421 template in Configurations, like unix-Makefile.tmpl or
1424 With this change, the library names were also renamed on Windows
1425 and on VMS. They now have names that are closer to the standard
1426 on Unix, and include the major version number, and in certain
1427 cases, the architecture they are built for. See "Notes on shared
1428 libraries" in INSTALL.
1430 We rely heavily on the perl module Text::Template.
1433 *) Added support for auto-initialisation and de-initialisation of the library.
1434 OpenSSL no longer requires explicit init or deinit routines to be called,
1435 except in certain circumstances. See the OPENSSL_init_crypto() and
1436 OPENSSL_init_ssl() man pages for further information.
1439 *) The arguments to the DTLSv1_listen function have changed. Specifically the
1440 "peer" argument is now expected to be a BIO_ADDR object.
1442 *) Rewrite of BIO networking library. The BIO library lacked consistent
1443 support of IPv6, and adding it required some more extensive
1444 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
1445 which hold all types of addresses and chains of address information.
1446 It also introduces a new API, with functions like BIO_socket,
1447 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
1448 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
1449 have been adapted accordingly.
1452 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
1456 *) CRIME protection: disable compression by default, even if OpenSSL is
1457 compiled with zlib enabled. Applications can still enable compression
1458 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
1459 using the SSL_CONF library to configure compression.
1462 *) The signature of the session callback configured with
1463 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
1464 was explicitly marked as 'const unsigned char*' instead of
1468 *) Always DPURIFY. Remove the use of uninitialized memory in the
1469 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
1472 *) Removed many obsolete configuration items, including
1473 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
1474 MD2_CHAR, MD2_INT, MD2_LONG
1476 IDEA_SHORT, IDEA_LONG
1477 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
1478 [Rich Salz, with advice from Andy Polyakov]
1480 *) Many BN internals have been moved to an internal header file.
1481 [Rich Salz with help from Andy Polyakov]
1483 *) Configuration and writing out the results from it has changed.
1484 Files such as Makefile include/openssl/opensslconf.h and are now
1485 produced through general templates, such as Makefile.in and
1486 crypto/opensslconf.h.in and some help from the perl module
1489 Also, the center of configuration information is no longer
1490 Makefile. Instead, Configure produces a perl module in
1491 configdata.pm which holds most of the config data (in the hash
1492 table %config), the target data that comes from the target
1493 configuration in one of the Configurations/*.conf files (in
1497 *) To clarify their intended purposes, the Configure options
1498 --prefix and --openssldir change their semantics, and become more
1499 straightforward and less interdependent.
1501 --prefix shall be used exclusively to give the location INSTALLTOP
1502 where programs, scripts, libraries, include files and manuals are
1503 going to be installed. The default is now /usr/local.
1505 --openssldir shall be used exclusively to give the default
1506 location OPENSSLDIR where certificates, private keys, CRLs are
1507 managed. This is also where the default openssl.cnf gets
1509 If the directory given with this option is a relative path, the
1510 values of both the --prefix value and the --openssldir value will
1511 be combined to become OPENSSLDIR.
1512 The default for --openssldir is INSTALLTOP/ssl.
1514 Anyone who uses --openssldir to specify where OpenSSL is to be
1515 installed MUST change to use --prefix instead.
1518 *) The GOST engine was out of date and therefore it has been removed. An up
1519 to date GOST engine is now being maintained in an external repository.
1520 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
1521 support for GOST ciphersuites (these are only activated if a GOST engine
1525 *) EGD is no longer supported by default; use enable-egd when
1527 [Ben Kaduk and Rich Salz]
1529 *) The distribution now has Makefile.in files, which are used to
1530 create Makefile's when Configure is run. *Configure must be run
1531 before trying to build now.*
1534 *) The return value for SSL_CIPHER_description() for error conditions
1538 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication.
1540 Obtaining and performing DNSSEC validation of TLSA records is
1541 the application's responsibility. The application provides
1542 the TLSA records of its choice to OpenSSL, and these are then
1543 used to authenticate the peer.
1545 The TLSA records need not even come from DNS. They can, for
1546 example, be used to implement local end-entity certificate or
1547 trust-anchor "pinning", where the "pin" data takes the form
1548 of TLSA records, which can augment or replace verification
1549 based on the usual WebPKI public certification authorities.
1552 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
1553 continues to support deprecated interfaces in default builds.
1554 However, applications are strongly advised to compile their
1555 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
1556 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
1557 or the 1.1.0 releases.
1559 In environments in which all applications have been ported to
1560 not use any deprecated interfaces OpenSSL's Configure script
1561 should be used with the --api=1.1.0 option to entirely remove
1562 support for the deprecated features from the library and
1563 unconditionally disable them in the installed headers.
1564 Essentially the same effect can be achieved with the "no-deprecated"
1565 argument to Configure, except that this will always restrict
1566 the build to just the latest API, rather than a fixed API
1569 As applications are ported to future revisions of the API,
1570 they should update their compile-time OPENSSL_API_COMPAT define
1571 accordingly, but in most cases should be able to continue to
1572 compile with later releases.
1574 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
1575 0x10000000L and 0x00908000L, respectively. However those
1576 versions did not support the OPENSSL_API_COMPAT feature, and
1577 so applications are not typically tested for explicit support
1578 of just the undeprecated features of either release.
1581 *) Add support for setting the minimum and maximum supported protocol.
1582 It can bet set via the SSL_set_min_proto_version() and
1583 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
1584 MaxProtocol. It's recommended to use the new APIs to disable
1585 protocols instead of disabling individual protocols using
1586 SSL_set_options() or SSL_CONF's Protocol. This change also
1587 removes support for disabling TLS 1.2 in the OpenSSL TLS
1588 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
1591 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
1594 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
1595 and integrates ECDSA and ECDH functionality into EC. Implementations can
1596 now redirect key generation and no longer need to convert to or from
1599 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
1600 include the ec.h header file instead.
1603 *) Remove support for all 40 and 56 bit ciphers. This includes all the export
1604 ciphers who are no longer supported and drops support the ephemeral RSA key
1605 exchange. The LOW ciphers currently doesn't have any ciphers in it.
1608 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
1609 opaque. For HMAC_CTX, the following constructors and destructors
1612 HMAC_CTX *HMAC_CTX_new(void);
1613 void HMAC_CTX_free(HMAC_CTX *ctx);
1615 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
1616 destroy such methods has been added. See EVP_MD_meth_new(3) and
1617 EVP_CIPHER_meth_new(3) for documentation.
1620 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
1621 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
1622 EVP_MD_CTX_reset() should be called instead to reinitialise
1623 an already created structure.
1624 2) For consistency with the majority of our object creators and
1625 destructors, EVP_MD_CTX_(create|destroy) were renamed to
1626 EVP_MD_CTX_(new|free). The old names are retained as macros
1627 for deprecated builds.
1630 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
1631 cryptographic operations to be performed asynchronously as long as an
1632 asynchronous capable engine is used. See the ASYNC_start_job() man page for
1633 further details. Libssl has also had this capability integrated with the
1634 introduction of the new mode SSL_MODE_ASYNC and associated error
1635 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
1636 pages. This work was developed in partnership with Intel Corp.
1639 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
1640 always enabled now. If you want to disable the support you should
1641 exclude it using the list of supported ciphers. This also means that the
1642 "-no_ecdhe" option has been removed from s_server.
1645 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
1646 SSL_{CTX_}set1_curves() which can set a list.
1649 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
1650 curve you want to support using SSL_{CTX_}set1_curves().
1653 *) State machine rewrite. The state machine code has been significantly
1654 refactored in order to remove much duplication of code and solve issues
1655 with the old code (see ssl/statem/README for further details). This change
1656 does have some associated API changes. Notably the SSL_state() function
1657 has been removed and replaced by SSL_get_state which now returns an
1658 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
1659 altogether. The previous handshake states defined in ssl.h and ssl3.h have
1663 *) All instances of the string "ssleay" in the public API were replaced
1664 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
1665 Some error codes related to internal RSA_eay API's were renamed.
1668 *) The demo files in crypto/threads were moved to demo/threads.
1671 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
1673 [Matt Caswell, Rich Salz]
1675 *) New ASN.1 embed macro.
1677 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
1678 structure is not allocated: it is part of the parent. That is instead of
1686 This reduces memory fragmentation and make it impossible to accidentally
1687 set a mandatory field to NULL.
1689 This currently only works for some fields specifically a SEQUENCE, CHOICE,
1690 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
1691 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
1695 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
1698 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
1699 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
1700 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
1701 DES and RC4 ciphersuites.
1704 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
1705 This changes the decoding behaviour for some invalid messages,
1706 though the change is mostly in the more lenient direction, and
1707 legacy behaviour is preserved as much as possible.
1710 *) Fix no-stdio build.
1711 [ David Woodhouse <David.Woodhouse@intel.com> and also
1712 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
1714 *) New testing framework
1715 The testing framework has been largely rewritten and is now using
1716 perl and the perl modules Test::Harness and an extended variant of
1717 Test::More called OpenSSL::Test to do its work. All test scripts in
1718 test/ have been rewritten into test recipes, and all direct calls to
1719 executables in test/Makefile have become individual recipes using the
1720 simplified testing OpenSSL::Test::Simple.
1722 For documentation on our testing modules, do:
1724 perldoc test/testlib/OpenSSL/Test/Simple.pm
1725 perldoc test/testlib/OpenSSL/Test.pm
1729 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
1730 are used; the latter aborts on memory leaks (usually checked on exit).
1731 Some undocumented "set malloc, etc., hooks" functions were removed
1732 and others were changed. All are now documented.
1735 *) In DSA_generate_parameters_ex, if the provided seed is too short,
1737 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
1739 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
1740 from RFC4279, RFC4785, RFC5487, RFC5489.
1742 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
1743 original RSA_PSK patch.
1746 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
1747 era flag was never set throughout the codebase (only read). Also removed
1748 SSL3_FLAGS_POP_BUFFER which was only used if
1749 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
1752 *) Changed the default name options in the "ca", "crl", "req" and "x509"
1753 to be "oneline" instead of "compat".
1756 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
1757 not aware of clients that still exhibit this bug, and the workaround
1758 hasn't been working properly for a while.
1761 *) The return type of BIO_number_read() and BIO_number_written() as well as
1762 the corresponding num_read and num_write members in the BIO structure has
1763 changed from unsigned long to uint64_t. On platforms where an unsigned
1764 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
1768 *) Given the pervasive nature of TLS extensions it is inadvisable to run
1769 OpenSSL without support for them. It also means that maintaining
1770 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
1771 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
1774 *) Removed support for the two export grade static DH ciphersuites
1775 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
1776 were newly added (along with a number of other static DH ciphersuites) to
1777 1.0.2. However the two export ones have *never* worked since they were
1778 introduced. It seems strange in any case to be adding new export
1779 ciphersuites, and given "logjam" it also does not seem correct to fix them.
1782 *) Version negotiation has been rewritten. In particular SSLv23_method(),
1783 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
1784 and turned into macros which simply call the new preferred function names
1785 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
1786 should use the new names instead. Also as part of this change the ssl23.h
1787 header file has been removed.
1790 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
1791 code and the associated standard is no longer considered fit-for-purpose.
1794 *) RT2547 was closed. When generating a private key, try to make the
1795 output file readable only by the owner. This behavior change might
1796 be noticeable when interacting with other software.
1798 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
1802 *) Added HTTP GET support to the ocsp command.
1805 *) Changed default digest for the dgst and enc commands from MD5 to
1809 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
1812 *) Added support for TLS extended master secret from
1813 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
1814 initial patch which was a great help during development.
1817 *) All libssl internal structures have been removed from the public header
1818 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
1819 now redundant). Users should not attempt to access internal structures
1820 directly. Instead they should use the provided API functions.
1823 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
1824 Access to deprecated functions can be re-enabled by running config with
1825 "enable-deprecated". In addition applications wishing to use deprecated
1826 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
1827 will, by default, disable some transitive includes that previously existed
1828 in the header files (e.g. ec.h will no longer, by default, include bn.h)
1831 *) Added support for OCB mode. OpenSSL has been granted a patent license
1832 compatible with the OpenSSL license for use of OCB. Details are available
1833 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
1834 for OCB can be removed by calling config with no-ocb.
1837 *) SSLv2 support has been removed. It still supports receiving a SSLv2
1838 compatible client hello.
1841 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
1842 done while fixing the error code for the key-too-small case.
1843 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
1845 *) CA.sh has been removed; use CA.pl instead.
1848 *) Removed old DES API.
1851 *) Remove various unsupported platforms:
1857 Sinix/ReliantUNIX RM400
1862 16-bit platforms such as WIN16
1865 *) Clean up OPENSSL_NO_xxx #define's
1866 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
1867 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
1868 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
1869 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
1870 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
1871 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
1872 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
1873 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
1874 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
1875 Remove MS_STATIC; it's a relic from platforms <32 bits.
1878 *) Cleaned up dead code
1879 Remove all but one '#ifdef undef' which is to be looked at.
1882 *) Clean up calling of xxx_free routines.
1883 Just like free(), fix most of the xxx_free routines to accept
1884 NULL. Remove the non-null checks from callers. Save much code.
1887 *) Add secure heap for storage of private keys (when possible).
1888 Add BIO_s_secmem(), CBIGNUM, etc.
1889 Contributed by Akamai Technologies under our Corporate CLA.
1892 *) Experimental support for a new, fast, unbiased prime candidate generator,
1893 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
1894 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
1896 *) New output format NSS in the sess_id command line tool. This allows
1897 exporting the session id and the master key in NSS keylog format.
1898 [Martin Kaiser <martin@kaiser.cx>]
1900 *) Harmonize version and its documentation. -f flag is used to display
1902 [mancha <mancha1@zoho.com>]
1904 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
1905 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
1906 [mancha <mancha1@zoho.com>]
1908 *) Fix some double frees. These are not thought to be exploitable.
1909 [mancha <mancha1@zoho.com>]
1911 *) A missing bounds check in the handling of the TLS heartbeat extension
1912 can be used to reveal up to 64k of memory to a connected client or
1915 Thanks for Neel Mehta of Google Security for discovering this bug and to
1916 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
1917 preparing the fix (CVE-2014-0160)
1918 [Adam Langley, Bodo Moeller]
1920 *) Fix for the attack described in the paper "Recovering OpenSSL
1921 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
1922 by Yuval Yarom and Naomi Benger. Details can be obtained from:
1923 http://eprint.iacr.org/2014/140
1925 Thanks to Yuval Yarom and Naomi Benger for discovering this
1926 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
1927 [Yuval Yarom and Naomi Benger]
1929 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
1930 this fixes a limitation in previous versions of OpenSSL.
1933 *) Experimental encrypt-then-mac support.
1935 Experimental support for encrypt then mac from
1936 draft-gutmann-tls-encrypt-then-mac-02.txt
1938 To enable it set the appropriate extension number (0x42 for the test
1939 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
1941 For non-compliant peers (i.e. just about everything) this should have no
1944 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
1948 *) Add EVP support for key wrapping algorithms, to avoid problems with
1949 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
1950 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
1951 algorithms and include tests cases.
1954 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
1958 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
1959 MGF1 digest and OAEP label.
1962 *) Make openssl verify return errors.
1963 [Chris Palmer <palmer@google.com> and Ben Laurie]
1965 *) New function ASN1_TIME_diff to calculate the difference between two
1966 ASN1_TIME structures or one structure and the current time.
1969 *) Update fips_test_suite to support multiple command line options. New
1970 test to induce all self test errors in sequence and check expected
1974 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
1975 sign or verify all in one operation.
1978 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
1979 test programs and fips_test_suite. Includes functionality to parse
1980 the minimal script output of fipsalgest.pl directly.
1983 *) Add authorisation parameter to FIPS_module_mode_set().
1986 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
1989 *) Use separate DRBG fields for internal and external flags. New function
1990 FIPS_drbg_health_check() to perform on demand health checking. Add
1991 generation tests to fips_test_suite with reduced health check interval to
1992 demonstrate periodic health checking. Add "nodh" option to
1993 fips_test_suite to skip very slow DH test.
1996 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
2000 *) More extensive health check for DRBG checking many more failure modes.
2001 New function FIPS_selftest_drbg_all() to handle every possible DRBG
2002 combination: call this in fips_test_suite.
2005 *) Add support for canonical generation of DSA parameter 'g'. See
2008 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
2009 POST to handle HMAC cases.
2012 *) Add functions FIPS_module_version() and FIPS_module_version_text()
2013 to return numerical and string versions of the FIPS module number.
2016 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
2017 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
2018 outside the validated module in the FIPS capable OpenSSL.
2021 *) Minor change to DRBG entropy callback semantics. In some cases
2022 there is no multiple of the block length between min_len and
2023 max_len. Allow the callback to return more than max_len bytes
2024 of entropy but discard any extra: it is the callback's responsibility
2025 to ensure that the extra data discarded does not impact the
2026 requested amount of entropy.
2029 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
2030 information in FIPS186-3, SP800-57 and SP800-131A.
2033 *) CCM support via EVP. Interface is very similar to GCM case except we
2034 must supply all data in one chunk (i.e. no update, final) and the
2035 message length must be supplied if AAD is used. Add algorithm test
2039 *) Initial version of POST overhaul. Add POST callback to allow the status
2040 of POST to be monitored and/or failures induced. Modify fips_test_suite
2041 to use callback. Always run all selftests even if one fails.
2044 *) XTS support including algorithm test driver in the fips_gcmtest program.
2045 Note: this does increase the maximum key length from 32 to 64 bytes but
2046 there should be no binary compatibility issues as existing applications
2047 will never use XTS mode.
2050 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
2051 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
2052 performs algorithm blocking for unapproved PRNG types. Also do not
2053 set PRNG type in FIPS_mode_set(): leave this to the application.
2054 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
2055 the standard OpenSSL PRNG: set additional data to a date time vector.
2058 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
2059 This shouldn't present any incompatibility problems because applications
2060 shouldn't be using these directly and any that are will need to rethink
2061 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
2064 *) Extensive self tests and health checking required by SP800-90 DRBG.
2065 Remove strength parameter from FIPS_drbg_instantiate and always
2066 instantiate at maximum supported strength.
2069 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
2072 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
2075 *) New function DH_compute_key_padded() to compute a DH key and pad with
2076 leading zeroes if needed: this complies with SP800-56A et al.
2079 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
2080 anything, incomplete, subject to change and largely untested at present.
2083 *) Modify fipscanisteronly build option to only build the necessary object
2084 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
2087 *) Add experimental option FIPSSYMS to give all symbols in
2088 fipscanister.o and FIPS or fips prefix. This will avoid
2089 conflicts with future versions of OpenSSL. Add perl script
2090 util/fipsas.pl to preprocess assembly language source files
2091 and rename any affected symbols.
2094 *) Add selftest checks and algorithm block of non-fips algorithms in
2095 FIPS mode. Remove DES2 from selftests.
2098 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
2099 return internal method without any ENGINE dependencies. Add new
2100 tiny fips sign and verify functions.
2103 *) New build option no-ec2m to disable characteristic 2 code.
2106 *) New build option "fipscanisteronly". This only builds fipscanister.o
2107 and (currently) associated fips utilities. Uses the file Makefile.fips
2108 instead of Makefile.org as the prototype.
2111 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
2112 Update fips_gcmtest to use IV generator.
2115 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
2116 setting output buffer to NULL. The *Final function must be
2117 called although it will not retrieve any additional data. The tag
2118 can be set or retrieved with a ctrl. The IV length is by default 12
2119 bytes (96 bits) but can be set to an alternative value. If the IV
2120 length exceeds the maximum IV length (currently 16 bytes) it cannot be
2124 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
2125 underlying do_cipher function handles all cipher semantics itself
2126 including padding and finalisation. This is useful if (for example)
2127 an ENGINE cipher handles block padding itself. The behaviour of
2128 do_cipher is subtly changed if this flag is set: the return value
2129 is the number of characters written to the output buffer (zero is
2130 no longer an error code) or a negative error code. Also if the
2131 input buffer is NULL and length 0 finalisation should be performed.
2134 *) If a candidate issuer certificate is already part of the constructed
2135 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
2138 *) Improve forward-security support: add functions
2140 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
2141 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
2143 for use by SSL/TLS servers; the callback function will be called whenever a
2144 new session is created, and gets to decide whether the session may be
2145 cached to make it resumable (return 0) or not (return 1). (As by the
2146 SSL/TLS protocol specifications, the session_id sent by the server will be
2147 empty to indicate that the session is not resumable; also, the server will
2148 not generate RFC 4507 (RFC 5077) session tickets.)
2150 A simple reasonable callback implementation is to return is_forward_secure.
2151 This parameter will be set to 1 or 0 depending on the ciphersuite selected
2152 by the SSL/TLS server library, indicating whether it can provide forward
2154 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2156 *) New -verify_name option in command line utilities to set verification
2160 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
2161 Add CMAC pkey methods.
2164 *) Experimental renegotiation in s_server -www mode. If the client
2165 browses /reneg connection is renegotiated. If /renegcert it is
2166 renegotiated requesting a certificate.
2169 *) Add an "external" session cache for debugging purposes to s_server. This
2170 should help trace issues which normally are only apparent in deployed
2171 multi-process servers.
2174 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
2175 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
2176 BIO_set_cipher() and some obscure PEM functions were changed so they
2177 can now return an error. The RAND changes required a change to the
2178 RAND_METHOD structure.
2181 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
2182 a gcc attribute to warn if the result of a function is ignored. This
2183 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
2184 whose return value is often ignored.
2187 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client.
2188 These allow SCTs (signed certificate timestamps) to be requested and
2189 validated when establishing a connection.
2190 [Rob Percival <robpercival@google.com>]
2192 Changes between 1.0.2g and 1.0.2h [3 May 2016]
2194 *) Prevent padding oracle in AES-NI CBC MAC check
2196 A MITM attacker can use a padding oracle attack to decrypt traffic
2197 when the connection uses an AES CBC cipher and the server support
2200 This issue was introduced as part of the fix for Lucky 13 padding
2201 attack (CVE-2013-0169). The padding check was rewritten to be in
2202 constant time by making sure that always the same bytes are read and
2203 compared against either the MAC or padding bytes. But it no longer
2204 checked that there was enough data to have both the MAC and padding
2207 This issue was reported by Juraj Somorovsky using TLS-Attacker.
2211 *) Fix EVP_EncodeUpdate overflow
2213 An overflow can occur in the EVP_EncodeUpdate() function which is used for
2214 Base64 encoding of binary data. If an attacker is able to supply very large
2215 amounts of input data then a length check can overflow resulting in a heap
2218 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
2219 the PEM_write_bio* family of functions. These are mainly used within the
2220 OpenSSL command line applications, so any application which processes data
2221 from an untrusted source and outputs it as a PEM file should be considered
2222 vulnerable to this issue. User applications that call these APIs directly
2223 with large amounts of untrusted data may also be vulnerable.
2225 This issue was reported by Guido Vranken.
2229 *) Fix EVP_EncryptUpdate overflow
2231 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
2232 is able to supply very large amounts of input data after a previous call to
2233 EVP_EncryptUpdate() with a partial block then a length check can overflow
2234 resulting in a heap corruption. Following an analysis of all OpenSSL
2235 internal usage of the EVP_EncryptUpdate() function all usage is one of two
2236 forms. The first form is where the EVP_EncryptUpdate() call is known to be
2237 the first called function after an EVP_EncryptInit(), and therefore that
2238 specific call must be safe. The second form is where the length passed to
2239 EVP_EncryptUpdate() can be seen from the code to be some small value and
2240 therefore there is no possibility of an overflow. Since all instances are
2241 one of these two forms, it is believed that there can be no overflows in
2242 internal code due to this problem. It should be noted that
2243 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
2244 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
2245 of these calls have also been analysed too and it is believed there are no
2246 instances in internal usage where an overflow could occur.
2248 This issue was reported by Guido Vranken.
2252 *) Prevent ASN.1 BIO excessive memory allocation
2254 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
2255 a short invalid encoding can cause allocation of large amounts of memory
2256 potentially consuming excessive resources or exhausting memory.
2258 Any application parsing untrusted data through d2i BIO functions is
2259 affected. The memory based functions such as d2i_X509() are *not* affected.
2260 Since the memory based functions are used by the TLS library, TLS
2261 applications are not affected.
2263 This issue was reported by Brian Carpenter.
2269 ASN1 Strings that are over 1024 bytes can cause an overread in applications
2270 using the X509_NAME_oneline() function on EBCDIC systems. This could result
2271 in arbitrary stack data being returned in the buffer.
2273 This issue was reported by Guido Vranken.
2277 *) Modify behavior of ALPN to invoke callback after SNI/servername
2278 callback, such that updates to the SSL_CTX affect ALPN.
2281 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
2285 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
2286 methods are enabled and ssl2 is disabled the methods return NULL.
2289 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
2291 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
2292 Builds that are not configured with "enable-weak-ssl-ciphers" will not
2293 provide any "EXPORT" or "LOW" strength ciphers.
2296 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
2297 is by default disabled at build-time. Builds that are not configured with
2298 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
2299 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
2300 will need to explicitly call either of:
2302 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
2304 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
2306 as appropriate. Even if either of those is used, or the application
2307 explicitly uses the version-specific SSLv2_method() or its client and
2308 server variants, SSLv2 ciphers vulnerable to exhaustive search key
2309 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
2310 ciphers, and SSLv2 56-bit DES are no longer available.
2314 *) Fix a double-free in DSA code
2316 A double free bug was discovered when OpenSSL parses malformed DSA private
2317 keys and could lead to a DoS attack or memory corruption for applications
2318 that receive DSA private keys from untrusted sources. This scenario is
2321 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
2326 *) Disable SRP fake user seed to address a server memory leak.
2328 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
2330 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
2331 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
2332 was changed to ignore the "fake user" SRP seed, even if the seed
2335 Users should use SRP_VBASE_get1_by_user instead. Note that in
2336 SRP_VBASE_get1_by_user, caller must free the returned value. Note
2337 also that even though configuring the SRP seed attempts to hide
2338 invalid usernames by continuing the handshake with fake
2339 credentials, this behaviour is not constant time and no strong
2340 guarantees are made that the handshake is indistinguishable from
2341 that of a valid user.
2345 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
2347 In the BN_hex2bn function the number of hex digits is calculated using an
2348 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
2349 large values of |i| this can result in |bn_expand| not allocating any
2350 memory because |i * 4| is negative. This can leave the internal BIGNUM data
2351 field as NULL leading to a subsequent NULL ptr deref. For very large values
2352 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
2353 In this case memory is allocated to the internal BIGNUM data field, but it
2354 is insufficiently sized leading to heap corruption. A similar issue exists
2355 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
2356 is ever called by user applications with very large untrusted hex/dec data.
2357 This is anticipated to be a rare occurrence.
2359 All OpenSSL internal usage of these functions use data that is not expected
2360 to be untrusted, e.g. config file data or application command line
2361 arguments. If user developed applications generate config file data based
2362 on untrusted data then it is possible that this could also lead to security
2363 consequences. This is also anticipated to be rare.
2365 This issue was reported to OpenSSL by Guido Vranken.
2369 *) Fix memory issues in BIO_*printf functions
2371 The internal |fmtstr| function used in processing a "%s" format string in
2372 the BIO_*printf functions could overflow while calculating the length of a
2373 string and cause an OOB read when printing very long strings.
2375 Additionally the internal |doapr_outch| function can attempt to write to an
2376 OOB memory location (at an offset from the NULL pointer) in the event of a
2377 memory allocation failure. In 1.0.2 and below this could be caused where
2378 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
2379 could be in processing a very long "%s" format string. Memory leaks can
2382 The first issue may mask the second issue dependent on compiler behaviour.
2383 These problems could enable attacks where large amounts of untrusted data
2384 is passed to the BIO_*printf functions. If applications use these functions
2385 in this way then they could be vulnerable. OpenSSL itself uses these
2386 functions when printing out human-readable dumps of ASN.1 data. Therefore
2387 applications that print this data could be vulnerable if the data is from
2388 untrusted sources. OpenSSL command line applications could also be
2389 vulnerable where they print out ASN.1 data, or if untrusted data is passed
2390 as command line arguments.
2392 Libssl is not considered directly vulnerable. Additionally certificates etc
2393 received via remote connections via libssl are also unlikely to be able to
2394 trigger these issues because of message size limits enforced within libssl.
2396 This issue was reported to OpenSSL Guido Vranken.
2400 *) Side channel attack on modular exponentiation
2402 A side-channel attack was found which makes use of cache-bank conflicts on
2403 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
2404 of RSA keys. The ability to exploit this issue is limited as it relies on
2405 an attacker who has control of code in a thread running on the same
2406 hyper-threaded core as the victim thread which is performing decryptions.
2408 This issue was reported to OpenSSL by Yuval Yarom, The University of
2409 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
2410 Nadia Heninger, University of Pennsylvania with more information at
2411 http://cachebleed.info.
2415 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
2416 if no keysize is specified with default_bits. This fixes an
2417 omission in an earlier change that changed all RSA/DSA key generation
2418 apps to use 2048 bits by default.
2421 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
2422 *) DH small subgroups
2424 Historically OpenSSL only ever generated DH parameters based on "safe"
2425 primes. More recently (in version 1.0.2) support was provided for
2426 generating X9.42 style parameter files such as those required for RFC 5114
2427 support. The primes used in such files may not be "safe". Where an
2428 application is using DH configured with parameters based on primes that are
2429 not "safe" then an attacker could use this fact to find a peer's private
2430 DH exponent. This attack requires that the attacker complete multiple
2431 handshakes in which the peer uses the same private DH exponent. For example
2432 this could be used to discover a TLS server's private DH exponent if it's
2433 reusing the private DH exponent or it's using a static DH ciphersuite.
2435 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
2436 TLS. It is not on by default. If the option is not set then the server
2437 reuses the same private DH exponent for the life of the server process and
2438 would be vulnerable to this attack. It is believed that many popular
2439 applications do set this option and would therefore not be at risk.
2441 The fix for this issue adds an additional check where a "q" parameter is
2442 available (as is the case in X9.42 based parameters). This detects the
2443 only known attack, and is the only possible defense for static DH
2444 ciphersuites. This could have some performance impact.
2446 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
2447 default and cannot be disabled. This could have some performance impact.
2449 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
2453 *) SSLv2 doesn't block disabled ciphers
2455 A malicious client can negotiate SSLv2 ciphers that have been disabled on
2456 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
2457 been disabled, provided that the SSLv2 protocol was not also disabled via
2460 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
2461 and Sebastian Schinzel.
2465 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
2467 *) BN_mod_exp may produce incorrect results on x86_64
2469 There is a carry propagating bug in the x86_64 Montgomery squaring
2470 procedure. No EC algorithms are affected. Analysis suggests that attacks
2471 against RSA and DSA as a result of this defect would be very difficult to
2472 perform and are not believed likely. Attacks against DH are considered just
2473 feasible (although very difficult) because most of the work necessary to
2474 deduce information about a private key may be performed offline. The amount
2475 of resources required for such an attack would be very significant and
2476 likely only accessible to a limited number of attackers. An attacker would
2477 additionally need online access to an unpatched system using the target
2478 private key in a scenario with persistent DH parameters and a private
2479 key that is shared between multiple clients. For example this can occur by
2480 default in OpenSSL DHE based SSL/TLS ciphersuites.
2482 This issue was reported to OpenSSL by Hanno Böck.
2486 *) Certificate verify crash with missing PSS parameter
2488 The signature verification routines will crash with a NULL pointer
2489 dereference if presented with an ASN.1 signature using the RSA PSS
2490 algorithm and absent mask generation function parameter. Since these
2491 routines are used to verify certificate signature algorithms this can be
2492 used to crash any certificate verification operation and exploited in a
2493 DoS attack. Any application which performs certificate verification is
2494 vulnerable including OpenSSL clients and servers which enable client
2497 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
2501 *) X509_ATTRIBUTE memory leak
2503 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
2504 memory. This structure is used by the PKCS#7 and CMS routines so any
2505 application which reads PKCS#7 or CMS data from untrusted sources is
2506 affected. SSL/TLS is not affected.
2508 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
2513 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
2514 This changes the decoding behaviour for some invalid messages,
2515 though the change is mostly in the more lenient direction, and
2516 legacy behaviour is preserved as much as possible.
2519 *) In DSA_generate_parameters_ex, if the provided seed is too short,
2521 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
2523 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
2525 *) Alternate chains certificate forgery
2527 During certificate verification, OpenSSL will attempt to find an
2528 alternative certificate chain if the first attempt to build such a chain
2529 fails. An error in the implementation of this logic can mean that an
2530 attacker could cause certain checks on untrusted certificates to be
2531 bypassed, such as the CA flag, enabling them to use a valid leaf
2532 certificate to act as a CA and "issue" an invalid certificate.
2534 This issue was reported to OpenSSL by Adam Langley/David Benjamin
2538 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
2540 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
2541 incompatibility in the handling of HMAC. The previous ABI has now been
2545 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
2547 *) Malformed ECParameters causes infinite loop
2549 When processing an ECParameters structure OpenSSL enters an infinite loop
2550 if the curve specified is over a specially malformed binary polynomial
2553 This can be used to perform denial of service against any
2554 system which processes public keys, certificate requests or
2555 certificates. This includes TLS clients and TLS servers with
2556 client authentication enabled.
2558 This issue was reported to OpenSSL by Joseph Barr-Pixton.
2562 *) Exploitable out-of-bounds read in X509_cmp_time
2564 X509_cmp_time does not properly check the length of the ASN1_TIME
2565 string and can read a few bytes out of bounds. In addition,
2566 X509_cmp_time accepts an arbitrary number of fractional seconds in the
2569 An attacker can use this to craft malformed certificates and CRLs of
2570 various sizes and potentially cause a segmentation fault, resulting in
2571 a DoS on applications that verify certificates or CRLs. TLS clients
2572 that verify CRLs are affected. TLS clients and servers with client
2573 authentication enabled may be affected if they use custom verification
2576 This issue was reported to OpenSSL by Robert Swiecki (Google), and
2577 independently by Hanno Böck.
2581 *) PKCS7 crash with missing EnvelopedContent
2583 The PKCS#7 parsing code does not handle missing inner EncryptedContent
2584 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
2585 with missing content and trigger a NULL pointer dereference on parsing.
2587 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
2588 structures from untrusted sources are affected. OpenSSL clients and
2589 servers are not affected.
2591 This issue was reported to OpenSSL by Michal Zalewski (Google).
2595 *) CMS verify infinite loop with unknown hash function
2597 When verifying a signedData message the CMS code can enter an infinite loop
2598 if presented with an unknown hash function OID. This can be used to perform
2599 denial of service against any system which verifies signedData messages using
2601 This issue was reported to OpenSSL by Johannes Bauer.
2605 *) Race condition handling NewSessionTicket
2607 If a NewSessionTicket is received by a multi-threaded client when attempting to
2608 reuse a previous ticket then a race condition can occur potentially leading to
2609 a double free of the ticket data.
2613 *) Only support 256-bit or stronger elliptic curves with the
2614 'ecdh_auto' setting (server) or by default (client). Of supported
2615 curves, prefer P-256 (both).
2618 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
2620 *) ClientHello sigalgs DoS fix
2622 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
2623 invalid signature algorithms extension a NULL pointer dereference will
2624 occur. This can be exploited in a DoS attack against the server.
2626 This issue was was reported to OpenSSL by David Ramos of Stanford
2629 [Stephen Henson and Matt Caswell]
2631 *) Multiblock corrupted pointer fix
2633 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
2634 feature only applies on 64 bit x86 architecture platforms that support AES
2635 NI instructions. A defect in the implementation of "multiblock" can cause
2636 OpenSSL's internal write buffer to become incorrectly set to NULL when
2637 using non-blocking IO. Typically, when the user application is using a
2638 socket BIO for writing, this will only result in a failed connection.
2639 However if some other BIO is used then it is likely that a segmentation
2640 fault will be triggered, thus enabling a potential DoS attack.
2642 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
2646 *) Segmentation fault in DTLSv1_listen fix
2648 The DTLSv1_listen function is intended to be stateless and processes the
2649 initial ClientHello from many peers. It is common for user code to loop
2650 over the call to DTLSv1_listen until a valid ClientHello is received with
2651 an associated cookie. A defect in the implementation of DTLSv1_listen means
2652 that state is preserved in the SSL object from one invocation to the next
2653 that can lead to a segmentation fault. Errors processing the initial
2654 ClientHello can trigger this scenario. An example of such an error could be
2655 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
2658 This issue was reported to OpenSSL by Per Allansson.
2662 *) Segmentation fault in ASN1_TYPE_cmp fix
2664 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
2665 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
2666 certificate signature algorithm consistency this can be used to crash any
2667 certificate verification operation and exploited in a DoS attack. Any
2668 application which performs certificate verification is vulnerable including
2669 OpenSSL clients and servers which enable client authentication.
2673 *) Segmentation fault for invalid PSS parameters fix
2675 The signature verification routines will crash with a NULL pointer
2676 dereference if presented with an ASN.1 signature using the RSA PSS
2677 algorithm and invalid parameters. Since these routines are used to verify
2678 certificate signature algorithms this can be used to crash any
2679 certificate verification operation and exploited in a DoS attack. Any
2680 application which performs certificate verification is vulnerable including
2681 OpenSSL clients and servers which enable client authentication.
2683 This issue was was reported to OpenSSL by Brian Carpenter.
2687 *) ASN.1 structure reuse memory corruption fix
2689 Reusing a structure in ASN.1 parsing may allow an attacker to cause
2690 memory corruption via an invalid write. Such reuse is and has been
2691 strongly discouraged and is believed to be rare.
2693 Applications that parse structures containing CHOICE or ANY DEFINED BY
2694 components may be affected. Certificate parsing (d2i_X509 and related
2695 functions) are however not affected. OpenSSL clients and servers are
2700 *) PKCS7 NULL pointer dereferences fix
2702 The PKCS#7 parsing code does not handle missing outer ContentInfo
2703 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
2704 missing content and trigger a NULL pointer dereference on parsing.
2706 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
2707 otherwise parse PKCS#7 structures from untrusted sources are
2708 affected. OpenSSL clients and servers are not affected.
2710 This issue was reported to OpenSSL by Michal Zalewski (Google).
2714 *) DoS via reachable assert in SSLv2 servers fix
2716 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
2717 servers that both support SSLv2 and enable export cipher suites by sending
2718 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
2720 This issue was discovered by Sean Burford (Google) and Emilia Käsper
2721 (OpenSSL development team).
2725 *) Empty CKE with client auth and DHE fix
2727 If client auth is used then a server can seg fault in the event of a DHE
2728 ciphersuite being selected and a zero length ClientKeyExchange message
2729 being sent by the client. This could be exploited in a DoS attack.
2733 *) Handshake with unseeded PRNG fix
2735 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
2736 with an unseeded PRNG. The conditions are:
2737 - The client is on a platform where the PRNG has not been seeded
2738 automatically, and the user has not seeded manually
2739 - A protocol specific client method version has been used (i.e. not
2740 SSL_client_methodv23)
2741 - A ciphersuite is used that does not require additional random data from
2742 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
2744 If the handshake succeeds then the client random that has been used will
2745 have been generated from a PRNG with insufficient entropy and therefore the
2746 output may be predictable.
2748 For example using the following command with an unseeded openssl will
2749 succeed on an unpatched platform:
2751 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
2755 *) Use After Free following d2i_ECPrivatekey error fix
2757 A malformed EC private key file consumed via the d2i_ECPrivateKey function
2758 could cause a use after free condition. This, in turn, could cause a double
2759 free in several private key parsing functions (such as d2i_PrivateKey
2760 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
2761 for applications that receive EC private keys from untrusted
2762 sources. This scenario is considered rare.
2764 This issue was discovered by the BoringSSL project and fixed in their
2769 *) X509_to_X509_REQ NULL pointer deref fix
2771 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
2772 the certificate key is invalid. This function is rarely used in practice.
2774 This issue was discovered by Brian Carpenter.
2778 *) Removed the export ciphers from the DEFAULT ciphers
2781 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
2783 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
2784 ARMv5 through ARMv8, as opposite to "locking" it to single one.
2785 So far those who have to target multiple platforms would compromise
2786 and argue that binary targeting say ARMv5 would still execute on
2787 ARMv8. "Universal" build resolves this compromise by providing
2788 near-optimal performance even on newer platforms.
2791 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
2792 (other platforms pending).
2793 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
2795 *) Add support for the SignedCertificateTimestampList certificate and
2796 OCSP response extensions from RFC6962.
2799 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
2800 for corner cases. (Certain input points at infinity could lead to
2801 bogus results, with non-infinity inputs mapped to infinity too.)
2804 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
2805 This covers AES, SHA256/512 and GHASH. "Initial" means that most
2806 common cases are optimized and there still is room for further
2807 improvements. Vector Permutation AES for Altivec is also added.
2810 *) Add support for little-endian ppc64 Linux target.
2811 [Marcelo Cerri (IBM)]
2813 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
2814 SHA1, SHA256 and GHASH. "Initial" means that most common cases
2815 are optimized and there still is room for further improvements.
2816 Both 32- and 64-bit modes are supported.
2817 [Andy Polyakov, Ard Biesheuvel (Linaro)]
2819 *) Improved ARMv7 NEON support.
2822 *) Support for SPARC Architecture 2011 crypto extensions, first
2823 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
2824 SHA256/512, MD5, GHASH and modular exponentiation.
2825 [Andy Polyakov, David Miller]
2827 *) Accelerated modular exponentiation for Intel processors, a.k.a.
2829 [Shay Gueron & Vlad Krasnov (Intel Corp)]
2831 *) Support for new and upcoming Intel processors, including AVX2,
2832 BMI and SHA ISA extensions. This includes additional "stitched"
2833 implementations, AESNI-SHA256 and GCM, and multi-buffer support
2836 This work was sponsored by Intel Corp.
2839 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
2840 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
2841 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
2844 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
2845 this fixes a limitation in previous versions of OpenSSL.
2848 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
2849 MGF1 digest and OAEP label.
2852 *) Add EVP support for key wrapping algorithms, to avoid problems with
2853 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
2854 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
2855 algorithms and include tests cases.
2858 *) Add functions to allocate and set the fields of an ECDSA_METHOD
2860 [Douglas E. Engert, Steve Henson]
2862 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
2863 difference in days and seconds between two tm or ASN1_TIME structures.
2866 *) Add -rev test option to s_server to just reverse order of characters
2867 received by client and send back to server. Also prints an abbreviated
2868 summary of the connection parameters.
2871 *) New option -brief for s_client and s_server to print out a brief summary
2872 of connection parameters.
2875 *) Add callbacks for arbitrary TLS extensions.
2876 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
2878 *) New option -crl_download in several openssl utilities to download CRLs
2879 from CRLDP extension in certificates.
2882 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
2885 *) New function X509_CRL_diff to generate a delta CRL from the difference
2886 of two full CRLs. Add support to "crl" utility.
2889 *) New functions to set lookup_crls function and to retrieve
2890 X509_STORE from X509_STORE_CTX.
2893 *) Print out deprecated issuer and subject unique ID fields in
2897 *) Extend OCSP I/O functions so they can be used for simple general purpose
2898 HTTP as well as OCSP. New wrapper function which can be used to download
2899 CRLs using the OCSP API.
2902 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
2905 *) SSL_CONF* functions. These provide a common framework for application
2906 configuration using configuration files or command lines.
2909 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
2910 message callback and prints the results. Needs compile time option
2911 "enable-ssl-trace". New options to s_client and s_server to enable
2915 *) New ctrl and macro to retrieve supported points extensions.
2916 Print out extension in s_server and s_client.
2919 *) New functions to retrieve certificate signature and signature
2923 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
2927 *) New Suite B modes for TLS code. These use and enforce the requirements
2928 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
2929 only use Suite B curves. The Suite B modes can be set by using the
2930 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
2933 *) New chain verification flags for Suite B levels of security. Check
2934 algorithms are acceptable when flags are set in X509_verify_cert.
2937 *) Make tls1_check_chain return a set of flags indicating checks passed
2938 by a certificate chain. Add additional tests to handle client
2939 certificates: checks for matching certificate type and issuer name
2943 *) If an attempt is made to use a signature algorithm not in the peer
2944 preference list abort the handshake. If client has no suitable
2945 signature algorithms in response to a certificate request do not
2946 use the certificate.
2949 *) If server EC tmp key is not in client preference list abort handshake.
2952 *) Add support for certificate stores in CERT structure. This makes it
2953 possible to have different stores per SSL structure or one store in
2954 the parent SSL_CTX. Include distinct stores for certificate chain
2955 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
2956 to build and store a certificate chain in CERT structure: returning
2957 an error if the chain cannot be built: this will allow applications
2958 to test if a chain is correctly configured.
2960 Note: if the CERT based stores are not set then the parent SSL_CTX
2961 store is used to retain compatibility with existing behaviour.
2965 *) New function ssl_set_client_disabled to set a ciphersuite disabled
2966 mask based on the current session, check mask when sending client
2967 hello and checking the requested ciphersuite.
2970 *) New ctrls to retrieve and set certificate types in a certificate
2971 request message. Print out received values in s_client. If certificate
2972 types is not set with custom values set sensible values based on
2973 supported signature algorithms.
2976 *) Support for distinct client and server supported signature algorithms.
2979 *) Add certificate callback. If set this is called whenever a certificate
2980 is required by client or server. An application can decide which
2981 certificate chain to present based on arbitrary criteria: for example
2982 supported signature algorithms. Add very simple example to s_server.
2983 This fixes many of the problems and restrictions of the existing client
2984 certificate callback: for example you can now clear an existing
2985 certificate and specify the whole chain.
2988 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
2989 the certificate can be used for (if anything). Set valid_flags field
2990 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
2991 to have similar checks in it.
2993 Add new "cert_flags" field to CERT structure and include a "strict mode".
2994 This enforces some TLS certificate requirements (such as only permitting
2995 certificate signature algorithms contained in the supported algorithms
2996 extension) which some implementations ignore: this option should be used
2997 with caution as it could cause interoperability issues.
3000 *) Update and tidy signature algorithm extension processing. Work out
3001 shared signature algorithms based on preferences and peer algorithms
3002 and print them out in s_client and s_server. Abort handshake if no
3003 shared signature algorithms.
3006 *) Add new functions to allow customised supported signature algorithms
3007 for SSL and SSL_CTX structures. Add options to s_client and s_server
3011 *) New function SSL_certs_clear() to delete all references to certificates
3012 from an SSL structure. Before this once a certificate had been added
3013 it couldn't be removed.
3016 *) Integrate hostname, email address and IP address checking with certificate
3017 verification. New verify options supporting checking in openssl utility.
3020 *) Fixes and wildcard matching support to hostname and email checking
3021 functions. Add manual page.
3022 [Florian Weimer (Red Hat Product Security Team)]
3024 *) New functions to check a hostname email or IP address against a
3025 certificate. Add options x509 utility to print results of checks against
3029 *) Fix OCSP checking.
3030 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
3032 *) Initial experimental support for explicitly trusted non-root CAs.
3033 OpenSSL still tries to build a complete chain to a root but if an
3034 intermediate CA has a trust setting included that is used. The first
3035 setting is used: whether to trust (e.g., -addtrust option to the x509
3039 *) Add -trusted_first option which attempts to find certificates in the
3040 trusted store even if an untrusted chain is also supplied.
3043 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
3044 platform support for Linux and Android.
3047 *) Support for linux-x32, ILP32 environment in x86_64 framework.
3050 *) Experimental multi-implementation support for FIPS capable OpenSSL.
3051 When in FIPS mode the approved implementations are used as normal,
3052 when not in FIPS mode the internal unapproved versions are used instead.
3053 This means that the FIPS capable OpenSSL isn't forced to use the
3054 (often lower performance) FIPS implementations outside FIPS mode.
3057 *) Transparently support X9.42 DH parameters when calling
3058 PEM_read_bio_DHparameters. This means existing applications can handle
3059 the new parameter format automatically.
3062 *) Initial experimental support for X9.42 DH parameter format: mainly
3063 to support use of 'q' parameter for RFC5114 parameters.
3066 *) Add DH parameters from RFC5114 including test data to dhtest.
3069 *) Support for automatic EC temporary key parameter selection. If enabled
3070 the most preferred EC parameters are automatically used instead of
3071 hardcoded fixed parameters. Now a server just has to call:
3072 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
3073 support ECDH and use the most appropriate parameters.
3076 *) Enhance and tidy EC curve and point format TLS extension code. Use
3077 static structures instead of allocation if default values are used.
3078 New ctrls to set curves we wish to support and to retrieve shared curves.
3079 Print out shared curves in s_server. New options to s_server and s_client
3080 to set list of supported curves.
3083 *) New ctrls to retrieve supported signature algorithms and
3084 supported curve values as an array of NIDs. Extend openssl utility
3085 to print out received values.
3088 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
3089 between NIDs and the more common NIST names such as "P-256". Enhance
3090 ecparam utility and ECC method to recognise the NIST names for curves.
3093 *) Enhance SSL/TLS certificate chain handling to support different
3094 chains for each certificate instead of one chain in the parent SSL_CTX.
3097 *) Support for fixed DH ciphersuite client authentication: where both
3098 server and client use DH certificates with common parameters.
3101 *) Support for fixed DH ciphersuites: those requiring DH server
3105 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
3107 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
3108 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
3109 X509_CINF_get_signature were reverted post internal team review.
3111 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
3113 *) Build fixes for the Windows and OpenVMS platforms
3114 [Matt Caswell and Richard Levitte]
3116 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
3118 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
3119 message can cause a segmentation fault in OpenSSL due to a NULL pointer
3120 dereference. This could lead to a Denial Of Service attack. Thanks to
3121 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
3125 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
3126 dtls1_buffer_record function under certain conditions. In particular this
3127 could occur if an attacker sent repeated DTLS records with the same
3128 sequence number but for the next epoch. The memory leak could be exploited
3129 by an attacker in a Denial of Service attack through memory exhaustion.
3130 Thanks to Chris Mueller for reporting this issue.
3134 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
3135 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
3136 method would be set to NULL which could later result in a NULL pointer
3137 dereference. Thanks to Frank Schmirler for reporting this issue.
3141 *) Abort handshake if server key exchange message is omitted for ephemeral
3144 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
3145 reporting this issue.
3149 *) Remove non-export ephemeral RSA code on client and server. This code
3150 violated the TLS standard by allowing the use of temporary RSA keys in
3151 non-export ciphersuites and could be used by a server to effectively
3152 downgrade the RSA key length used to a value smaller than the server
3153 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
3154 INRIA or reporting this issue.
3158 *) Fixed issue where DH client certificates are accepted without verification.
3159 An OpenSSL server will accept a DH certificate for client authentication
3160 without the certificate verify message. This effectively allows a client to
3161 authenticate without the use of a private key. This only affects servers
3162 which trust a client certificate authority which issues certificates
3163 containing DH keys: these are extremely rare and hardly ever encountered.
3164 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
3169 *) Ensure that the session ID context of an SSL is updated when its
3170 SSL_CTX is updated via SSL_set_SSL_CTX.
3172 The session ID context is typically set from the parent SSL_CTX,
3173 and can vary with the CTX.
3176 *) Fix various certificate fingerprint issues.
3178 By using non-DER or invalid encodings outside the signed portion of a
3179 certificate the fingerprint can be changed without breaking the signature.
3180 Although no details of the signed portion of the certificate can be changed
3181 this can cause problems with some applications: e.g. those using the
3182 certificate fingerprint for blacklists.
3184 1. Reject signatures with non zero unused bits.
3186 If the BIT STRING containing the signature has non zero unused bits reject
3187 the signature. All current signature algorithms require zero unused bits.
3189 2. Check certificate algorithm consistency.
3191 Check the AlgorithmIdentifier inside TBS matches the one in the
3192 certificate signature. NB: this will result in signature failure
3193 errors for some broken certificates.
3195 Thanks to Konrad Kraszewski from Google for reporting this issue.
3197 3. Check DSA/ECDSA signatures use DER.
3199 Re-encode DSA/ECDSA signatures and compare with the original received
3200 signature. Return an error if there is a mismatch.
3202 This will reject various cases including garbage after signature
3203 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
3204 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
3205 (negative or with leading zeroes).
3207 Further analysis was conducted and fixes were developed by Stephen Henson
3208 of the OpenSSL core team.
3213 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
3214 results on some platforms, including x86_64. This bug occurs at random
3215 with a very low probability, and is not known to be exploitable in any
3216 way, though its exact impact is difficult to determine. Thanks to Pieter
3217 Wuille (Blockstream) who reported this issue and also suggested an initial
3218 fix. Further analysis was conducted by the OpenSSL development team and
3219 Adam Langley of Google. The final fix was developed by Andy Polyakov of
3220 the OpenSSL core team.
3224 *) Do not resume sessions on the server if the negotiated protocol
3225 version does not match the session's version. Resuming with a different
3226 version, while not strictly forbidden by the RFC, is of questionable
3227 sanity and breaks all known clients.
3228 [David Benjamin, Emilia Käsper]
3230 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
3231 early CCS messages during renegotiation. (Note that because
3232 renegotiation is encrypted, this early CCS was not exploitable.)
3235 *) Tighten client-side session ticket handling during renegotiation:
3236 ensure that the client only accepts a session ticket if the server sends
3237 the extension anew in the ServerHello. Previously, a TLS client would
3238 reuse the old extension state and thus accept a session ticket if one was
3239 announced in the initial ServerHello.
3241 Similarly, ensure that the client requires a session ticket if one
3242 was advertised in the ServerHello. Previously, a TLS client would
3243 ignore a missing NewSessionTicket message.
3246 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
3248 *) SRTP Memory Leak.
3250 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
3251 sends a carefully crafted handshake message, to cause OpenSSL to fail
3252 to free up to 64k of memory causing a memory leak. This could be
3253 exploited in a Denial Of Service attack. This issue affects OpenSSL
3254 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
3255 whether SRTP is used or configured. Implementations of OpenSSL that
3256 have been compiled with OPENSSL_NO_SRTP defined are not affected.
3258 The fix was developed by the OpenSSL team.
3262 *) Session Ticket Memory Leak.
3264 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
3265 integrity of that ticket is first verified. In the event of a session
3266 ticket integrity check failing, OpenSSL will fail to free memory
3267 causing a memory leak. By sending a large number of invalid session
3268 tickets an attacker could exploit this issue in a Denial Of Service
3273 *) Build option no-ssl3 is incomplete.
3275 When OpenSSL is configured with "no-ssl3" as a build option, servers
3276 could accept and complete a SSL 3.0 handshake, and clients could be
3277 configured to send them.
3279 [Akamai and the OpenSSL team]
3281 *) Add support for TLS_FALLBACK_SCSV.
3282 Client applications doing fallback retries should call
3283 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
3285 [Adam Langley, Bodo Moeller]
3287 *) Add additional DigestInfo checks.
3289 Re-encode DigestInto in DER and check against the original when
3290 verifying RSA signature: this will reject any improperly encoded
3291 DigestInfo structures.
3293 Note: this is a precautionary measure and no attacks are currently known.
3297 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
3299 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
3300 SRP code can be overrun an internal buffer. Add sanity check that
3301 g, A, B < N to SRP code.
3303 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
3304 Group for discovering this issue.
3308 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
3309 TLS 1.0 instead of higher protocol versions when the ClientHello message
3310 is badly fragmented. This allows a man-in-the-middle attacker to force a
3311 downgrade to TLS 1.0 even if both the server and the client support a
3312 higher protocol version, by modifying the client's TLS records.
3314 Thanks to David Benjamin and Adam Langley (Google) for discovering and
3315 researching this issue.
3319 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
3320 to a denial of service attack. A malicious server can crash the client
3321 with a null pointer dereference (read) by specifying an anonymous (EC)DH
3322 ciphersuite and sending carefully crafted handshake messages.
3324 Thanks to Felix Gröbert (Google) for discovering and researching this
3329 *) By sending carefully crafted DTLS packets an attacker could cause openssl
3330 to leak memory. This can be exploited through a Denial of Service attack.
3331 Thanks to Adam Langley for discovering and researching this issue.
3335 *) An attacker can force openssl to consume large amounts of memory whilst
3336 processing DTLS handshake messages. This can be exploited through a
3337 Denial of Service attack.
3338 Thanks to Adam Langley for discovering and researching this issue.
3342 *) An attacker can force an error condition which causes openssl to crash
3343 whilst processing DTLS packets due to memory being freed twice. This
3344 can be exploited through a Denial of Service attack.
3345 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
3350 *) If a multithreaded client connects to a malicious server using a resumed
3351 session and the server sends an ec point format extension it could write
3352 up to 255 bytes to freed memory.
3354 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
3359 *) A malicious server can crash an OpenSSL client with a null pointer
3360 dereference (read) by specifying an SRP ciphersuite even though it was not
3361 properly negotiated with the client. This can be exploited through a
3362 Denial of Service attack.
3364 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
3365 discovering and researching this issue.
3369 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
3370 X509_name_oneline, X509_name_print_ex et al. to leak some information
3371 from the stack. Applications may be affected if they echo pretty printing
3372 output to the attacker.
3374 Thanks to Ivan Fratric (Google) for discovering this issue.
3376 [Emilia Käsper, and Steve Henson]
3378 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3379 for corner cases. (Certain input points at infinity could lead to
3380 bogus results, with non-infinity inputs mapped to infinity too.)
3383 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
3385 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
3386 handshake can force the use of weak keying material in OpenSSL
3387 SSL/TLS clients and servers.
3389 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
3390 researching this issue. (CVE-2014-0224)
3391 [KIKUCHI Masashi, Steve Henson]
3393 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
3394 OpenSSL DTLS client the code can be made to recurse eventually crashing
3397 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
3399 [Imre Rad, Steve Henson]
3401 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
3402 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
3403 client or server. This is potentially exploitable to run arbitrary
3404 code on a vulnerable client or server.
3406 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
3407 [Jüri Aedla, Steve Henson]
3409 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
3410 are subject to a denial of service attack.
3412 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
3413 this issue. (CVE-2014-3470)
3414 [Felix Gröbert, Ivan Fratric, Steve Henson]
3416 *) Harmonize version and its documentation. -f flag is used to display
3418 [mancha <mancha1@zoho.com>]
3420 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
3421 in i2d_ECPrivateKey.
3422 [mancha <mancha1@zoho.com>]
3424 *) Fix some double frees. These are not thought to be exploitable.
3425 [mancha <mancha1@zoho.com>]
3427 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
3429 *) A missing bounds check in the handling of the TLS heartbeat extension
3430 can be used to reveal up to 64k of memory to a connected client or
3433 Thanks for Neel Mehta of Google Security for discovering this bug and to
3434 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
3435 preparing the fix (CVE-2014-0160)
3436 [Adam Langley, Bodo Moeller]
3438 *) Fix for the attack described in the paper "Recovering OpenSSL
3439 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
3440 by Yuval Yarom and Naomi Benger. Details can be obtained from:
3441 http://eprint.iacr.org/2014/140
3443 Thanks to Yuval Yarom and Naomi Benger for discovering this
3444 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
3445 [Yuval Yarom and Naomi Benger]
3447 *) TLS pad extension: draft-agl-tls-padding-03
3449 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
3450 TLS client Hello record length value would otherwise be > 255 and
3451 less that 512 pad with a dummy extension containing zeroes so it
3452 is at least 512 bytes long.
3454 [Adam Langley, Steve Henson]
3456 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
3458 *) Fix for TLS record tampering bug. A carefully crafted invalid
3459 handshake could crash OpenSSL with a NULL pointer exception.
3460 Thanks to Anton Johansson for reporting this issues.
3463 *) Keep original DTLS digest and encryption contexts in retransmission
3464 structures so we can use the previous session parameters if they need
3465 to be resent. (CVE-2013-6450)
3468 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
3469 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
3470 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
3471 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
3472 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
3473 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
3474 [Rob Stradling, Adam Langley]
3476 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
3478 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
3479 supporting platforms or when small records were transferred.
3480 [Andy Polyakov, Steve Henson]
3482 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
3484 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
3486 This addresses the flaw in CBC record processing discovered by
3487 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
3488 at: http://www.isg.rhul.ac.uk/tls/
3490 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
3491 Security Group at Royal Holloway, University of London
3492 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
3493 Emilia Käsper for the initial patch.
3495 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
3497 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
3498 ciphersuites which can be exploited in a denial of service attack.
3499 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
3500 and detecting this bug and to Wolfgang Ettlinger
3501 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
3505 *) Return an error when checking OCSP signatures when key is NULL.
3506 This fixes a DoS attack. (CVE-2013-0166)
3509 *) Make openssl verify return errors.
3510 [Chris Palmer <palmer@google.com> and Ben Laurie]
3512 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
3513 the right response is stapled. Also change SSL_get_certificate()
3514 so it returns the certificate actually sent.
3515 See http://rt.openssl.org/Ticket/Display.html?id=2836.
3516 [Rob Stradling <rob.stradling@comodo.com>]
3518 *) Fix possible deadlock when decoding public keys.
3521 *) Don't use TLS 1.0 record version number in initial client hello
3525 Changes between 1.0.1b and 1.0.1c [10 May 2012]
3527 *) Sanity check record length before skipping explicit IV in TLS
3528 1.2, 1.1 and DTLS to fix DoS attack.
3530 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
3531 fuzzing as a service testing platform.
3535 *) Initialise tkeylen properly when encrypting CMS messages.
3536 Thanks to Solar Designer of Openwall for reporting this issue.
3539 *) In FIPS mode don't try to use composite ciphers as they are not
3543 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
3545 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
3546 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
3547 mean any application compiled against OpenSSL 1.0.0 headers setting
3548 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling
3549 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
3550 0x10000000L Any application which was previously compiled against
3551 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
3552 will need to be recompiled as a result. Letting be results in
3553 inability to disable specifically TLS 1.1 and in client context,
3554 in unlike event, limit maximum offered version to TLS 1.0 [see below].
3557 *) In order to ensure interoperability SSL_OP_NO_protocolX does not
3558 disable just protocol X, but all protocols above X *if* there are
3559 protocols *below* X still enabled. In more practical terms it means
3560 that if application wants to disable TLS1.0 in favor of TLS1.1 and
3561 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
3562 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
3566 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
3568 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
3569 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
3570 in CRYPTO_realloc_clean.
3572 Thanks to Tavis Ormandy, Google Security Team, for discovering this
3573 issue and to Adam Langley <agl@chromium.org> for fixing it.
3575 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
3577 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
3580 *) Workarounds for some broken servers that "hang" if a client hello
3581 record length exceeds 255 bytes.
3583 1. Do not use record version number > TLS 1.0 in initial client
3584 hello: some (but not all) hanging servers will now work.
3585 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
3586 the number of ciphers sent in the client hello. This should be
3587 set to an even number, such as 50, for example by passing:
3588 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
3589 Most broken servers should now work.
3590 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
3591 TLS 1.2 client support entirely.
3594 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
3597 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
3599 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
3600 STRING form instead of a DigestInfo.
3603 *) The format used for MDC2 RSA signatures is inconsistent between EVP
3604 and the RSA_sign/RSA_verify functions. This was made more apparent when
3605 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
3606 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
3607 the correct format in RSA_verify so both forms transparently work.
3610 *) Some servers which support TLS 1.0 can choke if we initially indicate
3611 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
3612 encrypted premaster secret. As a workaround use the maximum permitted
3613 client version in client hello, this should keep such servers happy
3614 and still work with previous versions of OpenSSL.
3617 *) Add support for TLS/DTLS heartbeats.
3618 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3620 *) Add support for SCTP.
3621 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3623 *) Improved PRNG seeding for VOS.
3624 [Paul Green <Paul.Green@stratus.com>]
3626 *) Extensive assembler packs updates, most notably:
3628 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
3629 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
3630 - x86_64: bit-sliced AES implementation;
3631 - ARM: NEON support, contemporary platforms optimizations;
3632 - s390x: z196 support;
3633 - *: GHASH and GF(2^m) multiplication implementations;
3637 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
3638 (removal of unnecessary code)
3639 [Peter Sylvester <peter.sylvester@edelweb.fr>]
3641 *) Add TLS key material exporter from RFC 5705.
3644 *) Add DTLS-SRTP negotiation from RFC 5764.
3647 *) Add Next Protocol Negotiation,
3648 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
3649 disabled with a no-npn flag to config or Configure. Code donated
3651 [Adam Langley <agl@google.com> and Ben Laurie]
3653 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
3654 NIST-P256, NIST-P521, with constant-time single point multiplication on
3655 typical inputs. Compiler support for the nonstandard type __uint128_t is
3656 required to use this (present in gcc 4.4 and later, for 64-bit builds).
3657 Code made available under Apache License version 2.0.
3659 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
3660 line to include this in your build of OpenSSL, and run "make depend" (or
3661 "make update"). This enables the following EC_METHODs:
3663 EC_GFp_nistp224_method()
3664 EC_GFp_nistp256_method()
3665 EC_GFp_nistp521_method()
3667 EC_GROUP_new_by_curve_name() will automatically use these (while
3668 EC_GROUP_new_curve_GFp() currently prefers the more flexible
3670 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
3672 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
3673 all platforms. Move ssize_t definition from e_os.h to the public
3674 header file e_os2.h as it now appears in public header file cms.h
3677 *) New -sigopt option to the ca, req and x509 utilities. Additional
3678 signature parameters can be passed using this option and in
3682 *) Add RSA PSS signing function. This will generate and set the
3683 appropriate AlgorithmIdentifiers for PSS based on those in the
3684 corresponding EVP_MD_CTX structure. No application support yet.
3687 *) Support for companion algorithm specific ASN1 signing routines.
3688 New function ASN1_item_sign_ctx() signs a pre-initialised
3689 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
3690 the appropriate parameters.
3693 *) Add new algorithm specific ASN1 verification initialisation function
3694 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
3695 handling will be the same no matter what EVP_PKEY_METHOD is used.
3696 Add a PSS handler to support verification of PSS signatures: checked
3697 against a number of sample certificates.
3700 *) Add signature printing for PSS. Add PSS OIDs.
3701 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
3703 *) Add algorithm specific signature printing. An individual ASN1 method
3704 can now print out signatures instead of the standard hex dump.
3706 More complex signatures (e.g. PSS) can print out more meaningful
3707 information. Include DSA version that prints out the signature
3711 *) Password based recipient info support for CMS library: implementing
3715 *) Split password based encryption into PBES2 and PBKDF2 functions. This
3716 neatly separates the code into cipher and PBE sections and is required
3717 for some algorithms that split PBES2 into separate pieces (such as
3718 password based CMS).
3721 *) Session-handling fixes:
3722 - Fix handling of connections that are resuming with a session ID,
3723 but also support Session Tickets.
3724 - Fix a bug that suppressed issuing of a new ticket if the client
3725 presented a ticket with an expired session.
3726 - Try to set the ticket lifetime hint to something reasonable.
3727 - Make tickets shorter by excluding irrelevant information.
3728 - On the client side, don't ignore renewed tickets.
3729 [Adam Langley, Bodo Moeller (Google)]
3731 *) Fix PSK session representation.
3734 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
3736 This work was sponsored by Intel.
3739 *) Add GCM support to TLS library. Some custom code is needed to split
3740 the IV between the fixed (from PRF) and explicit (from TLS record)
3741 portions. This adds all GCM ciphersuites supported by RFC5288 and
3742 RFC5289. Generalise some AES* cipherstrings to include GCM and
3743 add a special AESGCM string for GCM only.
3746 *) Expand range of ctrls for AES GCM. Permit setting invocation
3747 field on decrypt and retrieval of invocation field only on encrypt.
3750 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
3751 As required by RFC5289 these ciphersuites cannot be used if for
3752 versions of TLS earlier than 1.2.
3755 *) For FIPS capable OpenSSL interpret a NULL default public key method
3756 as unset and return the appropriate default but do *not* set the default.
3757 This means we can return the appropriate method in applications that
3758 switch between FIPS and non-FIPS modes.
3761 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
3762 ENGINE is used then we cannot handle that in the FIPS module so we
3763 keep original code iff non-FIPS operations are allowed.
3766 *) Add -attime option to openssl utilities.
3767 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
3769 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
3772 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
3773 FIPS EC methods unconditionally for now.
3776 *) New build option no-ec2m to disable characteristic 2 code.
3779 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
3780 all cases can be covered as some introduce binary incompatibilities.
3783 *) Redirect RSA operations to FIPS module including keygen,
3784 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
3787 *) Add similar low level API blocking to ciphers.
3790 *) Low level digest APIs are not approved in FIPS mode: any attempt
3791 to use these will cause a fatal error. Applications that *really* want
3792 to use them can use the private_* version instead.
3795 *) Redirect cipher operations to FIPS module for FIPS builds.
3798 *) Redirect digest operations to FIPS module for FIPS builds.
3801 *) Update build system to add "fips" flag which will link in fipscanister.o
3802 for static and shared library builds embedding a signature if needed.
3805 *) Output TLS supported curves in preference order instead of numerical
3806 order. This is currently hardcoded for the highest order curves first.
3807 This should be configurable so applications can judge speed vs strength.
3810 *) Add TLS v1.2 server support for client authentication.
3813 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
3817 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
3818 FIPS modules versions.
3821 *) Add TLS v1.2 client side support for client authentication. Keep cache
3822 of handshake records longer as we don't know the hash algorithm to use
3823 until after the certificate request message is received.
3826 *) Initial TLS v1.2 client support. Add a default signature algorithms
3827 extension including all the algorithms we support. Parse new signature
3828 format in client key exchange. Relax some ECC signing restrictions for
3829 TLS v1.2 as indicated in RFC5246.
3832 *) Add server support for TLS v1.2 signature algorithms extension. Switch
3833 to new signature format when needed using client digest preference.
3834 All server ciphersuites should now work correctly in TLS v1.2. No client
3835 support yet and no support for client certificates.
3838 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
3839 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
3840 ciphersuites. At present only RSA key exchange ciphersuites work with
3841 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
3842 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
3843 and version checking.
3846 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
3847 with this defined it will not be affected by any changes to ssl internal
3848 structures. Add several utility functions to allow openssl application
3849 to work with OPENSSL_NO_SSL_INTERN defined.
3852 *) A long standing patch to add support for SRP from EdelWeb (Peter
3853 Sylvester and Christophe Renou) was integrated.
3854 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
3855 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
3858 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
3861 *) Permit abbreviated handshakes when renegotiating using the function
3862 SSL_renegotiate_abbreviated().
3863 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3865 *) Add call to ENGINE_register_all_complete() to
3866 ENGINE_load_builtin_engines(), so some implementations get used
3867 automatically instead of needing explicit application support.
3870 *) Add support for TLS key exporter as described in RFC5705.
3871 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
3873 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
3874 a few changes are required:
3876 Add SSL_OP_NO_TLSv1_1 flag.
3877 Add TLSv1_1 methods.
3878 Update version checking logic to handle version 1.1.
3879 Add explicit IV handling (ported from DTLS code).
3880 Add command line options to s_client/s_server.
3883 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
3885 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
3886 in CMS and PKCS7 code. When RSA decryption fails use a random key for
3887 content decryption and always return the same error. Note: this attack
3888 needs on average 2^20 messages so it only affects automated senders. The
3889 old behaviour can be re-enabled in the CMS code by setting the
3890 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
3891 an MMA defence is not necessary.
3892 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
3893 this issue. (CVE-2012-0884)
3896 *) Fix CVE-2011-4619: make sure we really are receiving a
3897 client hello before rejecting multiple SGC restarts. Thanks to
3898 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
3901 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
3903 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
3904 Thanks to Antonio Martin, Enterprise Secure Access Research and
3905 Development, Cisco Systems, Inc. for discovering this bug and
3906 preparing a fix. (CVE-2012-0050)
3909 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
3911 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
3912 of the Vaudenay padding oracle attack on CBC mode encryption
3913 which enables an efficient plaintext recovery attack against
3914 the OpenSSL implementation of DTLS. Their attack exploits timing
3915 differences arising during decryption processing. A research
3916 paper describing this attack can be found at:
3917 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
3918 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
3919 Security Group at Royal Holloway, University of London
3920 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
3921 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
3922 for preparing the fix. (CVE-2011-4108)
3923 [Robin Seggelmann, Michael Tuexen]
3925 *) Clear bytes used for block padding of SSL 3.0 records.
3927 [Adam Langley (Google)]
3929 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
3930 Kadianakis <desnacked@gmail.com> for discovering this issue and
3931 Adam Langley for preparing the fix. (CVE-2011-4619)
3932 [Adam Langley (Google)]
3934 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
3935 [Andrey Kulikov <amdeich@gmail.com>]
3937 *) Prevent malformed RFC3779 data triggering an assertion failure.
3938 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
3939 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
3940 [Rob Austein <sra@hactrn.net>]
3942 *) Improved PRNG seeding for VOS.
3943 [Paul Green <Paul.Green@stratus.com>]
3945 *) Fix ssl_ciph.c set-up race.
3946 [Adam Langley (Google)]
3948 *) Fix spurious failures in ecdsatest.c.
3949 [Emilia Käsper (Google)]
3951 *) Fix the BIO_f_buffer() implementation (which was mixing different
3952 interpretations of the '..._len' fields).
3953 [Adam Langley (Google)]
3955 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
3956 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
3957 threads won't reuse the same blinding coefficients.
3959 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
3960 lock to call BN_BLINDING_invert_ex, and avoids one use of
3961 BN_BLINDING_update for each BN_BLINDING structure (previously,
3962 the last update always remained unused).
3963 [Emilia Käsper (Google)]
3965 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
3966 [Bob Buckholz (Google)]
3968 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
3970 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
3971 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
3972 [Kaspar Brand <ossl@velox.ch>]
3974 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
3975 for multi-threaded use of ECDH. (CVE-2011-3210)
3976 [Adam Langley (Google)]
3978 *) Fix x509_name_ex_d2i memory leak on bad inputs.
3981 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
3982 signature public key algorithm by using OID xref utilities instead.
3983 Before this you could only use some ECC ciphersuites with SHA1 only.
3986 *) Add protection against ECDSA timing attacks as mentioned in the paper
3987 by Billy Bob Brumley and Nicola Tuveri, see:
3989 http://eprint.iacr.org/2011/232.pdf
3991 [Billy Bob Brumley and Nicola Tuveri]
3993 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
3995 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
3996 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
3998 *) Fix bug in string printing code: if *any* escaping is enabled we must
3999 escape the escape character (backslash) or the resulting string is
4003 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
4005 *) Disable code workaround for ancient and obsolete Netscape browsers
4006 and servers: an attacker can use it in a ciphersuite downgrade attack.
4007 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
4010 *) Fixed J-PAKE implementation error, originally discovered by
4011 Sebastien Martini, further info and confirmation from Stefan
4012 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
4015 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
4017 *) Fix extension code to avoid race conditions which can result in a buffer
4018 overrun vulnerability: resumed sessions must not be modified as they can
4019 be shared by multiple threads. CVE-2010-3864
4022 *) Fix WIN32 build system to correctly link an ENGINE directory into
4026 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
4028 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
4030 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
4032 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
4034 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
4035 context. The operation can be customised via the ctrl mechanism in
4036 case ENGINEs want to include additional functionality.
4039 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
4042 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
4043 output hashes compatible with older versions of OpenSSL.
4044 [Willy Weisz <weisz@vcpc.univie.ac.at>]
4046 *) Fix compression algorithm handling: if resuming a session use the
4047 compression algorithm of the resumed session instead of determining
4048 it from client hello again. Don't allow server to change algorithm.
4051 *) Add load_crls() function to apps tidying load_certs() too. Add option
4052 to verify utility to allow additional CRLs to be included.
4055 *) Update OCSP request code to permit adding custom headers to the request:
4056 some responders need this.
4059 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
4061 [Julia Lawall <julia@diku.dk>]
4063 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
4064 needlessly dereferenced structures, used obsolete functions and
4065 didn't handle all updated verify codes correctly.
4068 *) Disable MD2 in the default configuration.
4071 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
4072 indicate the initial BIO being pushed or popped. This makes it possible
4073 to determine whether the BIO is the one explicitly called or as a result
4074 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
4075 it handles reference counts correctly and doesn't zero out the I/O bio
4076 when it is not being explicitly popped. WARNING: applications which
4077 included workarounds for the old buggy behaviour will need to be modified
4078 or they could free up already freed BIOs.
4081 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
4082 renaming to all platforms (within the 0.9.8 branch, this was
4083 done conditionally on Netware platforms to avoid a name clash).
4084 [Guenter <lists@gknw.net>]
4086 *) Add ECDHE and PSK support to DTLS.
4087 [Michael Tuexen <tuexen@fh-muenster.de>]
4089 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
4093 *) Add "missing" function EVP_MD_flags() (without this the only way to
4094 retrieve a digest flags is by accessing the structure directly. Update
4095 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
4096 or cipher is registered as in the "from" argument. Print out all
4097 registered digests in the dgst usage message instead of manually
4098 attempting to work them out.
4101 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
4102 this allows the use of compression and extensions. Change default cipher
4103 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
4104 by default unless an application cipher string requests it.
4107 *) Alter match criteria in PKCS12_parse(). It used to try to use local
4108 key ids to find matching certificates and keys but some PKCS#12 files
4109 don't follow the (somewhat unwritten) rules and this strategy fails.
4110 Now just gather all certificates together and the first private key
4111 then look for the first certificate that matches the key.
4114 *) Support use of registered digest and cipher names for dgst and cipher
4115 commands instead of having to add each one as a special case. So now
4122 openssl dgst -sha256 foo
4124 and this works for ENGINE based algorithms too.
4128 *) Update Gost ENGINE to support parameter files.
4129 [Victor B. Wagner <vitus@cryptocom.ru>]
4131 *) Support GeneralizedTime in ca utility.
4132 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
4134 *) Enhance the hash format used for certificate directory links. The new
4135 form uses the canonical encoding (meaning equivalent names will work
4136 even if they aren't identical) and uses SHA1 instead of MD5. This form
4137 is incompatible with the older format and as a result c_rehash should
4138 be used to rebuild symbolic links.
4141 *) Make PKCS#8 the default write format for private keys, replacing the
4142 traditional format. This form is standardised, more secure and doesn't
4143 include an implicit MD5 dependency.
4146 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
4147 committed to OpenSSL should pass this lot as a minimum.
4150 *) Add session ticket override functionality for use by EAP-FAST.
4151 [Jouni Malinen <j@w1.fi>]
4153 *) Modify HMAC functions to return a value. Since these can be implemented
4154 in an ENGINE errors can occur.
4157 *) Type-checked OBJ_bsearch_ex.
4160 *) Type-checked OBJ_bsearch. Also some constification necessitated
4161 by type-checking. Still to come: TXT_DB, bsearch(?),
4162 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
4166 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
4167 seconds to a tm structure directly, instead of going through OS
4168 specific date routines. This avoids any issues with OS routines such
4169 as the year 2038 bug. New *_adj() functions for ASN1 time structures
4170 and X509_time_adj_ex() to cover the extended range. The existing
4171 X509_time_adj() is still usable and will no longer have any date issues.
4174 *) Delta CRL support. New use deltas option which will attempt to locate
4175 and search any appropriate delta CRLs available.
4177 This work was sponsored by Google.
4180 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
4181 code and add additional score elements. Validate alternate CRL paths
4182 as part of the CRL checking and indicate a new error "CRL path validation
4183 error" in this case. Applications wanting additional details can use
4184 the verify callback and check the new "parent" field. If this is not
4185 NULL CRL path validation is taking place. Existing applications won't
4186 see this because it requires extended CRL support which is off by
4189 This work was sponsored by Google.
4192 *) Support for freshest CRL extension.
4194 This work was sponsored by Google.
4197 *) Initial indirect CRL support. Currently only supported in the CRLs
4198 passed directly and not via lookup. Process certificate issuer
4199 CRL entry extension and lookup CRL entries by bother issuer name
4200 and serial number. Check and process CRL issuer entry in IDP extension.
4202 This work was sponsored by Google.
4205 *) Add support for distinct certificate and CRL paths. The CRL issuer
4206 certificate is validated separately in this case. Only enabled if
4207 an extended CRL support flag is set: this flag will enable additional
4208 CRL functionality in future.
4210 This work was sponsored by Google.
4213 *) Add support for policy mappings extension.
4215 This work was sponsored by Google.
4218 *) Fixes to pathlength constraint, self issued certificate handling,
4219 policy processing to align with RFC3280 and PKITS tests.
4221 This work was sponsored by Google.
4224 *) Support for name constraints certificate extension. DN, email, DNS
4225 and URI types are currently supported.
4227 This work was sponsored by Google.
4230 *) To cater for systems that provide a pointer-based thread ID rather
4231 than numeric, deprecate the current numeric thread ID mechanism and
4232 replace it with a structure and associated callback type. This
4233 mechanism allows a numeric "hash" to be extracted from a thread ID in
4234 either case, and on platforms where pointers are larger than 'long',
4235 mixing is done to help ensure the numeric 'hash' is usable even if it
4236 can't be guaranteed unique. The default mechanism is to use "&errno"
4237 as a pointer-based thread ID to distinguish between threads.
4239 Applications that want to provide their own thread IDs should now use
4240 CRYPTO_THREADID_set_callback() to register a callback that will call
4241 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
4243 Note that ERR_remove_state() is now deprecated, because it is tied
4244 to the assumption that thread IDs are numeric. ERR_remove_state(0)
4245 to free the current thread's error state should be replaced by
4246 ERR_remove_thread_state(NULL).
4248 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
4249 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
4250 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
4251 application was previously providing a numeric thread callback that
4252 was inappropriate for distinguishing threads, then uniqueness might
4253 have been obtained with &errno that happened immediately in the
4254 intermediate development versions of OpenSSL; this is no longer the
4255 case, the numeric thread callback will now override the automatic use
4257 [Geoff Thorpe, with help from Bodo Moeller]
4259 *) Initial support for different CRL issuing certificates. This covers a
4260 simple case where the self issued certificates in the chain exist and
4261 the real CRL issuer is higher in the existing chain.
4263 This work was sponsored by Google.
4266 *) Removed effectively defunct crypto/store from the build.
4269 *) Revamp of STACK to provide stronger type-checking. Still to come:
4270 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
4271 ASN1_STRING, CONF_VALUE.
4274 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
4275 RAM on SSL connections. This option can save about 34k per idle SSL.
4278 *) Revamp of LHASH to provide stronger type-checking. Still to come:
4279 STACK, TXT_DB, bsearch, qsort.
4282 *) Initial support for Cryptographic Message Syntax (aka CMS) based
4283 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
4284 support for data, signedData, compressedData, digestedData and
4285 encryptedData, envelopedData types included. Scripts to check against
4286 RFC4134 examples draft and interop and consistency checks of many
4287 content types and variants.
4290 *) Add options to enc utility to support use of zlib compression BIO.
4293 *) Extend mk1mf to support importing of options and assembly language
4294 files from Configure script, currently only included in VC-WIN32.
4295 The assembly language rules can now optionally generate the source
4296 files from the associated perl scripts.
4299 *) Implement remaining functionality needed to support GOST ciphersuites.
4300 Interop testing has been performed using CryptoPro implementations.
4301 [Victor B. Wagner <vitus@cryptocom.ru>]
4303 *) s390x assembler pack.
4306 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
4310 *) Implement Opaque PRF Input TLS extension as specified in
4311 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
4312 official specification yet and no extension type assignment by
4313 IANA exists, this extension (for now) will have to be explicitly
4314 enabled when building OpenSSL by providing the extension number
4315 to use. For example, specify an option
4317 -DTLSEXT_TYPE_opaque_prf_input=0x9527
4319 to the "config" or "Configure" script to enable the extension,
4320 assuming extension number 0x9527 (which is a completely arbitrary
4321 and unofficial assignment based on the MD5 hash of the Internet
4322 Draft). Note that by doing so, you potentially lose
4323 interoperability with other TLS implementations since these might
4324 be using the same extension number for other purposes.
4326 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
4327 opaque PRF input value to use in the handshake. This will create
4328 an internal copy of the length-'len' string at 'src', and will
4329 return non-zero for success.
4331 To get more control and flexibility, provide a callback function
4334 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
4335 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
4339 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
4342 Callback function 'cb' will be called in handshakes, and is
4343 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
4344 Argument 'arg' is for application purposes (the value as given to
4345 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
4346 be provided to the callback function). The callback function
4347 has to return non-zero to report success: usually 1 to use opaque
4348 PRF input just if possible, or 2 to enforce use of the opaque PRF
4349 input. In the latter case, the library will abort the handshake
4350 if opaque PRF input is not successfully negotiated.
4352 Arguments 'peerinput' and 'len' given to the callback function
4353 will always be NULL and 0 in the case of a client. A server will
4354 see the client's opaque PRF input through these variables if
4355 available (NULL and 0 otherwise). Note that if the server
4356 provides an opaque PRF input, the length must be the same as the
4357 length of the client's opaque PRF input.
4359 Note that the callback function will only be called when creating
4360 a new session (session resumption can resume whatever was
4361 previously negotiated), and will not be called in SSL 2.0
4362 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
4363 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
4364 for applications that need to enforce opaque PRF input.
4368 *) Update ssl code to support digests other than SHA1+MD5 for handshake
4371 [Victor B. Wagner <vitus@cryptocom.ru>]
4373 *) Add RFC4507 support to OpenSSL. This includes the corrections in
4374 RFC4507bis. The encrypted ticket format is an encrypted encoded
4375 SSL_SESSION structure, that way new session features are automatically
4378 If a client application caches session in an SSL_SESSION structure
4379 support is transparent because tickets are now stored in the encoded
4382 The SSL_CTX structure automatically generates keys for ticket
4383 protection in servers so again support should be possible
4384 with no application modification.
4386 If a client or server wishes to disable RFC4507 support then the option
4387 SSL_OP_NO_TICKET can be set.
4389 Add a TLS extension debugging callback to allow the contents of any client
4390 or server extensions to be examined.
4392 This work was sponsored by Google.
4395 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
4396 OpenSSL should now compile cleanly on gcc 4.2
4397 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
4399 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
4400 support including streaming MAC support: this is required for GOST
4401 ciphersuite support.
4402 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
4404 *) Add option -stream to use PKCS#7 streaming in smime utility. New
4405 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
4406 to output in BER and PEM format.
4409 *) Experimental support for use of HMAC via EVP_PKEY interface. This
4410 allows HMAC to be handled via the EVP_DigestSign*() interface. The
4411 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
4412 ENGINE support for HMAC keys which are unextractable. New -mac and
4413 -macopt options to dgst utility.
4416 *) New option -sigopt to dgst utility. Update dgst to use
4417 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
4418 alternative signing parameters such as X9.31 or PSS in the dgst
4422 *) Change ssl_cipher_apply_rule(), the internal function that does
4423 the work each time a ciphersuite string requests enabling
4424 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
4425 removing ("!foo+bar") a class of ciphersuites: Now it maintains
4426 the order of disabled ciphersuites such that those ciphersuites
4427 that most recently went from enabled to disabled not only stay
4428 in order with respect to each other, but also have higher priority
4429 than other disabled ciphersuites the next time ciphersuites are
4432 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
4433 the same ciphersuites as with "HIGH" alone, but in a specific
4434 order where the PSK ciphersuites come first (since they are the
4435 most recently disabled ciphersuites when "HIGH" is parsed).
4437 Also, change ssl_create_cipher_list() (using this new
4438 functionality) such that between otherwise identical
4439 ciphersuites, ephemeral ECDH is preferred over ephemeral DH in
4443 *) Change ssl_create_cipher_list() so that it automatically
4444 arranges the ciphersuites in reasonable order before starting
4445 to process the rule string. Thus, the definition for "DEFAULT"
4446 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
4447 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
4448 This makes it much easier to arrive at a reasonable default order
4449 in applications for which anonymous ciphers are OK (meaning
4450 that you can't actually use DEFAULT).
4451 [Bodo Moeller; suggested by Victor Duchovni]
4453 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
4454 processing) into multiple integers instead of setting
4455 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
4456 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
4457 (These masks as well as the individual bit definitions are hidden
4458 away into the non-exported interface ssl/ssl_locl.h, so this
4459 change to the definition of the SSL_CIPHER structure shouldn't
4460 affect applications.) This give us more bits for each of these
4461 categories, so there is no longer a need to coagulate AES128 and
4462 AES256 into a single algorithm bit, and to coagulate Camellia128
4463 and Camellia256 into a single algorithm bit, which has led to all
4466 Thus, among other things, the kludge introduced in 0.9.7m and
4467 0.9.8e for masking out AES256 independently of AES128 or masking
4468 out Camellia256 independently of AES256 is not needed here in 0.9.9.
4470 With the change, we also introduce new ciphersuite aliases that
4471 so far were missing: "AES128", "AES256", "CAMELLIA128", and
4475 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
4476 Use the leftmost N bytes of the signature input if the input is
4477 larger than the prime q (with N being the size in bytes of q).
4480 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
4481 it yet and it is largely untested.
4484 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
4487 *) Initial incomplete changes to avoid need for function casts in OpenSSL
4488 some compilers (gcc 4.2 and later) reject their use. Safestack is
4489 reimplemented. Update ASN1 to avoid use of legacy functions.
4492 *) Win32/64 targets are linked with Winsock2.
4495 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
4496 to external functions. This can be used to increase CRL handling
4497 efficiency especially when CRLs are very large by (for example) storing
4498 the CRL revoked certificates in a database.
4501 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
4502 new CRLs added to a directory can be used. New command line option
4503 -verify_return_error to s_client and s_server. This causes real errors
4504 to be returned by the verify callback instead of carrying on no matter
4505 what. This reflects the way a "real world" verify callback would behave.
4508 *) GOST engine, supporting several GOST algorithms and public key formats.
4509 Kindly donated by Cryptocom.
4512 *) Partial support for Issuing Distribution Point CRL extension. CRLs
4513 partitioned by DP are handled but no indirect CRL or reason partitioning
4514 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
4515 selected via a scoring technique which handles IDP and AKID in CRLs.
4518 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
4519 will ultimately be used for all verify operations: this will remove the
4520 X509_STORE dependency on certificate verification and allow alternative
4521 lookup methods. X509_STORE based implementations of these two callbacks.
4524 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
4525 Modify get_crl() to find a valid (unexpired) CRL if possible.
4528 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
4529 this would be called X509_CRL_cmp() but that name is already used by
4530 a function that just compares CRL issuer names. Cache several CRL
4531 extensions in X509_CRL structure and cache CRLDP in X509.
4534 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
4535 this maps equivalent X509_NAME structures into a consistent structure.
4536 Name comparison can then be performed rapidly using memcmp().
4539 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
4543 *) Allow digests to supply their own micalg string for S/MIME type using
4544 the ctrl EVP_MD_CTRL_MICALG.
4547 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
4548 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
4549 ctrl. It can then customise the structure before and/or after signing
4553 *) New function OBJ_add_sigid() to allow application defined signature OIDs
4554 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
4555 to free up any added signature OIDs.
4558 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
4559 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
4560 digest and cipher tables. New options added to openssl utility:
4561 list-message-digest-algorithms and list-cipher-algorithms.
4564 *) Change the array representation of binary polynomials: the list
4565 of degrees of non-zero coefficients is now terminated with -1.
4566 Previously it was terminated with 0, which was also part of the
4567 value; thus, the array representation was not applicable to
4568 polynomials where t^0 has coefficient zero. This change makes
4569 the array representation useful in a more general context.
4572 *) Various modifications and fixes to SSL/TLS cipher string
4573 handling. For ECC, the code now distinguishes between fixed ECDH
4574 with RSA certificates on the one hand and with ECDSA certificates
4575 on the other hand, since these are separate ciphersuites. The
4576 unused code for Fortezza ciphersuites has been removed.
4578 For consistency with EDH, ephemeral ECDH is now called "EECDH"
4579 (not "ECDHE"). For consistency with the code for DH
4580 certificates, use of ECDH certificates is now considered ECDH
4581 authentication, not RSA or ECDSA authentication (the latter is
4582 merely the CA's signing algorithm and not actively used in the
4585 The temporary ciphersuite alias "ECCdraft" is no longer
4586 available, and ECC ciphersuites are no longer excluded from "ALL"
4587 and "DEFAULT". The following aliases now exist for RFC 4492
4588 ciphersuites, most of these by analogy with the DH case:
4590 kECDHr - ECDH cert, signed with RSA
4591 kECDHe - ECDH cert, signed with ECDSA
4592 kECDH - ECDH cert (signed with either RSA or ECDSA)
4593 kEECDH - ephemeral ECDH
4594 ECDH - ECDH cert or ephemeral ECDH
4600 AECDH - anonymous ECDH
4601 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
4605 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
4606 Use correct micalg parameters depending on digest(s) in signed message.
4609 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
4610 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
4613 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
4614 an engine to register a method. Add ENGINE lookups for methods and
4615 functional reference processing.
4618 *) New functions EVP_Digest{Sign,Verify)*. These are enhanced versions of
4619 EVP_{Sign,Verify}* which allow an application to customise the signature
4623 *) New -resign option to smime utility. This adds one or more signers
4624 to an existing PKCS#7 signedData structure. Also -md option to use an
4625 alternative message digest algorithm for signing.
4628 *) Tidy up PKCS#7 routines and add new functions to make it easier to
4629 create PKCS7 structures containing multiple signers. Update smime
4630 application to support multiple signers.
4633 *) New -macalg option to pkcs12 utility to allow setting of an alternative
4637 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
4638 Reorganize PBE internals to lookup from a static table using NIDs,
4639 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
4640 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
4641 PRF which will be automatically used with PBES2.
4644 *) Replace the algorithm specific calls to generate keys in "req" with the
4648 *) Update PKCS#7 enveloped data routines to use new API. This is now
4649 supported by any public key method supporting the encrypt operation. A
4650 ctrl is added to allow the public key algorithm to examine or modify
4651 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
4655 *) Add a ctrl to asn1 method to allow a public key algorithm to express
4656 a default digest type to use. In most cases this will be SHA1 but some
4657 algorithms (such as GOST) need to specify an alternative digest. The
4658 return value indicates how strong the preference is 1 means optional and
4659 2 is mandatory (that is it is the only supported type). Modify
4660 ASN1_item_sign() to accept a NULL digest argument to indicate it should
4661 use the default md. Update openssl utilities to use the default digest
4662 type for signing if it is not explicitly indicated.
4665 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
4666 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
4667 signing method from the key type. This effectively removes the link
4668 between digests and public key types.
4671 *) Add an OID cross reference table and utility functions. Its purpose is to
4672 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
4673 rsaEncryption. This will allow some of the algorithm specific hackery
4674 needed to use the correct OID to be removed.
4677 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
4678 structures for PKCS7_sign(). They are now set up by the relevant public
4682 *) Add provisional EC pkey method with support for ECDSA and ECDH.
4685 *) Add support for key derivation (agreement) in the API, DH method and
4689 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
4690 public and private key formats. As a side effect these add additional
4691 command line functionality not previously available: DSA signatures can be
4692 generated and verified using pkeyutl and DH key support and generation in
4697 [Oliver Tappe <zooey@hirschkaefer.de>]
4699 *) New make target "install_html_docs" installs HTML renditions of the
4701 [Oliver Tappe <zooey@hirschkaefer.de>]
4703 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
4704 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
4705 support key and parameter generation and add initial key generation
4706 functionality for RSA.
4709 *) Add functions for main EVP_PKEY_method operations. The undocumented
4710 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
4711 EVP_PKEY_{encrypt,decrypt}_old.
4714 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
4715 key API, doesn't do much yet.
4718 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
4719 public key algorithms. New option to openssl utility:
4720 "list-public-key-algorithms" to print out info.
4723 *) Implement the Supported Elliptic Curves Extension for
4724 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
4727 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
4728 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
4731 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
4732 utilities such as rsa, dsa, dsaparam etc except they process any key
4736 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
4737 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
4738 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
4742 *) Initial support for pluggable public key ASN1.
4743 De-spaghettify the public key ASN1 handling. Move public and private
4744 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
4745 algorithm specific handling to a single module within the relevant
4746 algorithm directory. Add functions to allow (near) opaque processing
4747 of public and private key structures.
4750 *) Implement the Supported Point Formats Extension for
4751 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
4754 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
4755 for the psk identity [hint] and the psk callback functions to the
4756 SSL_SESSION, SSL and SSL_CTX structure.
4759 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
4763 SSL_CTX_use_psk_identity_hint
4764 SSL_get_psk_identity_hint
4765 SSL_get_psk_identity
4766 SSL_use_psk_identity_hint
4768 [Mika Kousa and Pasi Eronen of Nokia Corporation]
4770 *) Add RFC 3161 compliant time stamp request creation, response generation
4771 and response verification functionality.
4772 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
4774 *) Add initial support for TLS extensions, specifically for the server_name
4775 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
4776 have new members for a host name. The SSL data structure has an
4777 additional member SSL_CTX *initial_ctx so that new sessions can be
4778 stored in that context to allow for session resumption, even after the
4779 SSL has been switched to a new SSL_CTX in reaction to a client's
4780 server_name extension.
4782 New functions (subject to change):
4784 SSL_get_servername()
4785 SSL_get_servername_type()
4788 New CTRL codes and macros (subject to change):
4790 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
4791 - SSL_CTX_set_tlsext_servername_callback()
4792 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
4793 - SSL_CTX_set_tlsext_servername_arg()
4794 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
4796 openssl s_client has a new '-servername ...' option.
4798 openssl s_server has new options '-servername_host ...', '-cert2 ...',
4799 '-key2 ...', '-servername_fatal' (subject to change). This allows
4800 testing the HostName extension for a specific single host name ('-cert'
4801 and '-key' remain fallbacks for handshakes without HostName
4802 negotiation). If the unrecognized_name alert has to be sent, this by
4803 default is a warning; it becomes fatal with the '-servername_fatal'
4806 [Peter Sylvester, Remy Allais, Christophe Renou]
4808 *) Whirlpool hash implementation is added.
4811 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
4812 bn(64,32). Because of instruction set limitations it doesn't have
4813 any negative impact on performance. This was done mostly in order
4814 to make it possible to share assembler modules, such as bn_mul_mont
4815 implementations, between 32- and 64-bit builds without hassle.
4818 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
4819 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
4823 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
4824 dedicated Montgomery multiplication procedure, is introduced.
4825 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
4826 "64-bit" performance on certain 32-bit targets.
4829 *) New option SSL_OP_NO_COMP to disable use of compression selectively
4830 in SSL structures. New SSL ctrl to set maximum send fragment size.
4831 Save memory by setting the I/O buffer sizes dynamically instead of
4832 using the maximum available value.
4835 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
4836 in addition to the text details.
4839 *) Very, very preliminary EXPERIMENTAL support for printing of general
4840 ASN1 structures. This currently produces rather ugly output and doesn't
4841 handle several customised structures at all.
4844 *) Integrated support for PVK file format and some related formats such
4845 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
4846 these in the 'rsa' and 'dsa' utilities.
4849 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
4852 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
4853 place for the (very old) "NETSCAPE" format certificates which are now
4854 handled using new ASN1 code equivalents.
4857 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
4858 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
4859 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
4862 *) Modify CRL distribution points extension code to print out previously
4863 unsupported fields. Enhance extension setting code to allow setting of
4867 *) Add print and set support for Issuing Distribution Point CRL extension.
4870 *) Change 'Configure' script to enable Camellia by default.
4873 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
4875 *) When rejecting SSL/TLS records due to an incorrect version number, never
4876 update s->server with a new major version number. As of
4877 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
4878 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
4879 the previous behavior could result in a read attempt at NULL when
4880 receiving specific incorrect SSL/TLS records once record payload
4881 protection is active. (CVE-2010-0740)
4882 [Bodo Moeller, Adam Langley <agl@chromium.org>]
4884 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
4885 could be crashed if the relevant tables were not present (e.g. chrooted).
4886 [Tomas Hoger <thoger@redhat.com>]
4888 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
4890 *) Always check bn_wexpand() return values for failure. (CVE-2009-3245)
4891 [Martin Olsson, Neel Mehta]
4893 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
4894 accommodate for stack sorting, always a write lock!).
4897 *) On some versions of WIN32 Heap32Next is very slow. This can cause
4898 excessive delays in the RAND_poll(): over a minute. As a workaround
4899 include a time check in the inner Heap32Next loop too.
4902 *) The code that handled flushing of data in SSL/TLS originally used the
4903 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
4904 the problem outlined in PR#1949. The fix suggested there however can
4905 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
4906 of Apache). So instead simplify the code to flush unconditionally.
4907 This should be fine since flushing with no data to flush is a no op.
4910 *) Handle TLS versions 2.0 and later properly and correctly use the
4911 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
4912 off ancient servers have a habit of sticking around for a while...
4915 *) Modify compression code so it frees up structures without using the
4916 ex_data callbacks. This works around a problem where some applications
4917 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
4918 restarting) then use compression (e.g. SSL with compression) later.
4919 This results in significant per-connection memory leaks and
4920 has caused some security issues including CVE-2008-1678 and
4924 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
4925 change when encrypting or decrypting.
4928 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
4929 connect and renegotiate with servers which do not support RI.
4930 Until RI is more widely deployed this option is enabled by default.
4933 *) Add "missing" ssl ctrls to clear options and mode.
4936 *) If client attempts to renegotiate and doesn't support RI respond with
4937 a no_renegotiation alert as required by RFC5746. Some renegotiating
4938 TLS clients will continue a connection gracefully when they receive
4939 the alert. Unfortunately OpenSSL mishandled this alert and would hang
4940 waiting for a server hello which it will never receive. Now we treat a
4941 received no_renegotiation alert as a fatal error. This is because
4942 applications requesting a renegotiation might well expect it to succeed
4943 and would have no code in place to handle the server denying it so the
4944 only safe thing to do is to terminate the connection.
4947 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
4948 peer supports secure renegotiation and 0 otherwise. Print out peer
4949 renegotiation support in s_client/s_server.
4952 *) Replace the highly broken and deprecated SPKAC certification method with
4953 the updated NID creation version. This should correctly handle UTF8.
4956 *) Implement RFC5746. Re-enable renegotiation but require the extension
4957 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
4958 turns out to be a bad idea. It has been replaced by
4959 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
4960 SSL_CTX_set_options(). This is really not recommended unless you
4961 know what you are doing.
4962 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
4964 *) Fixes to stateless session resumption handling. Use initial_ctx when
4965 issuing and attempting to decrypt tickets in case it has changed during
4966 servername handling. Use a non-zero length session ID when attempting
4967 stateless session resumption: this makes it possible to determine if
4968 a resumption has occurred immediately after receiving server hello
4969 (several places in OpenSSL subtly assume this) instead of later in
4973 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
4974 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
4975 fixes for a few places where the return code is not checked
4977 [Julia Lawall <julia@diku.dk>]
4979 *) Add --strict-warnings option to Configure script to include devteam
4980 warnings in other configurations.
4983 *) Add support for --libdir option and LIBDIR variable in makefiles. This
4984 makes it possible to install openssl libraries in locations which
4985 have names other than "lib", for example "/usr/lib64" which some
4987 [Steve Henson, based on patch from Jeremy Utley]
4989 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
4990 X690 8.9.12 and can produce some misleading textual output of OIDs.
4991 [Steve Henson, reported by Dan Kaminsky]
4993 *) Delete MD2 from algorithm tables. This follows the recommendation in
4994 several standards that it is not used in new applications due to
4995 several cryptographic weaknesses. For binary compatibility reasons
4996 the MD2 API is still compiled in by default.
4999 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
5003 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
5004 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
5006 [Guenter <lists@gknw.net>]
5008 *) Fix the server certificate chain building code to use X509_verify_cert(),
5009 it used to have an ad-hoc builder which was unable to cope with anything
5010 other than a simple chain.
5011 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
5013 *) Don't check self signed certificate signatures in X509_verify_cert()
5014 by default (a flag can override this): it just wastes time without
5015 adding any security. As a useful side effect self signed root CAs
5016 with non-FIPS digests are now usable in FIPS mode.
5019 *) In dtls1_process_out_of_seq_message() the check if the current message
5020 is already buffered was missing. For every new message was memory
5021 allocated, allowing an attacker to perform an denial of service attack
5022 with sending out of seq handshake messages until there is no memory
5023 left. Additionally every future message was buffered, even if the
5024 sequence number made no sense and would be part of another handshake.
5025 So only messages with sequence numbers less than 10 in advance will be
5026 buffered. (CVE-2009-1378)
5027 [Robin Seggelmann, discovered by Daniel Mentz]
5029 *) Records are buffered if they arrive with a future epoch to be
5030 processed after finishing the corresponding handshake. There is
5031 currently no limitation to this buffer allowing an attacker to perform
5032 a DOS attack with sending records with future epochs until there is no
5033 memory left. This patch adds the pqueue_size() function to determine
5034 the size of a buffer and limits the record buffer to 100 entries.
5036 [Robin Seggelmann, discovered by Daniel Mentz]
5038 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
5039 parent structure is freed. (CVE-2009-1379)
5042 *) Handle non-blocking I/O properly in SSL_shutdown() call.
5043 [Darryl Miles <darryl-mailinglists@netbauds.net>]
5046 [Ilya O. <vrghost@gmail.com>]
5048 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
5050 *) Disable renegotiation completely - this fixes a severe security
5051 problem (CVE-2009-3555) at the cost of breaking all
5052 renegotiation. Renegotiation can be re-enabled by setting
5053 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
5054 run-time. This is really not recommended unless you know what
5058 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
5060 *) Don't set val to NULL when freeing up structures, it is freed up by
5061 underlying code. If sizeof(void *) > sizeof(long) this can result in
5062 zeroing past the valid field. (CVE-2009-0789)
5063 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
5065 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
5066 checked correctly. This would allow some invalid signed attributes to
5067 appear to verify correctly. (CVE-2009-0591)
5068 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5070 *) Reject UniversalString and BMPString types with invalid lengths. This
5071 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
5072 a legal length. (CVE-2009-0590)
5075 *) Set S/MIME signing as the default purpose rather than setting it
5076 unconditionally. This allows applications to override it at the store
5080 *) Permit restricted recursion of ASN1 strings. This is needed in practice
5081 to handle some structures.
5084 *) Improve efficiency of mem_gets: don't search whole buffer each time
5086 [Jeremy Shapiro <jnshapir@us.ibm.com>]
5088 *) New -hex option for openssl rand.
5091 *) Print out UTF8String and NumericString when parsing ASN1.
5094 *) Support NumericString type for name components.
5097 *) Allow CC in the environment to override the automatically chosen
5098 compiler. Note that nothing is done to ensure flags work with the
5102 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
5104 *) Properly check EVP_VerifyFinal() and similar return values
5106 [Ben Laurie, Bodo Moeller, Google Security Team]
5108 *) Enable TLS extensions by default.
5111 *) Allow the CHIL engine to be loaded, whether the application is
5112 multithreaded or not. (This does not release the developer from the
5113 obligation to set up the dynamic locking callbacks.)
5114 [Sander Temme <sander@temme.net>]
5116 *) Use correct exit code if there is an error in dgst command.
5117 [Steve Henson; problem pointed out by Roland Dirlewanger]
5119 *) Tweak Configure so that you need to say "experimental-jpake" to enable
5120 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
5123 *) Add experimental JPAKE support, including demo authentication in
5124 s_client and s_server.
5127 *) Set the comparison function in v3_addr_canonize().
5128 [Rob Austein <sra@hactrn.net>]
5130 *) Add support for XMPP STARTTLS in s_client.
5131 [Philip Paeps <philip@freebsd.org>]
5133 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
5134 to ensure that even with this option, only ciphersuites in the
5135 server's preference list will be accepted. (Note that the option
5136 applies only when resuming a session, so the earlier behavior was
5137 just about the algorithm choice for symmetric cryptography.)
5140 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
5142 *) Fix NULL pointer dereference if a DTLS server received
5143 ChangeCipherSpec as first record (CVE-2009-1386).
5146 *) Fix a state transition in s3_srvr.c and d1_srvr.c
5147 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
5150 *) The fix in 0.9.8c that supposedly got rid of unsafe
5151 double-checked locking was incomplete for RSA blinding,
5152 addressing just one layer of what turns out to have been
5153 doubly unsafe triple-checked locking.
5155 So now fix this for real by retiring the MONT_HELPER macro
5156 in crypto/rsa/rsa_eay.c.
5158 [Bodo Moeller; problem pointed out by Marius Schilder]
5160 *) Various precautionary measures:
5162 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
5164 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
5165 (NB: This would require knowledge of the secret session ticket key
5166 to exploit, in which case you'd be SOL either way.)
5168 - Change bn_nist.c so that it will properly handle input BIGNUMs
5169 outside the expected range.
5171 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
5174 [Neel Mehta, Bodo Moeller]
5176 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
5177 the load fails. Useful for distros.
5178 [Ben Laurie and the FreeBSD team]
5180 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
5183 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
5186 *) Expand ENGINE to support engine supplied SSL client certificate functions.
5188 This work was sponsored by Logica.
5191 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
5192 keystores. Support for SSL/TLS client authentication too.
5193 Not compiled unless enable-capieng specified to Configure.
5195 This work was sponsored by Logica.
5198 *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using
5199 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
5200 attribute creation routines such as certificate requests and PKCS#12
5204 Changes between 0.9.8g and 0.9.8h [28 May 2008]
5206 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
5207 handshake which could lead to a client crash as found using the
5208 Codenomicon TLS test suite (CVE-2008-1672)
5209 [Steve Henson, Mark Cox]
5211 *) Fix double free in TLS server name extensions which could lead to
5212 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
5215 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
5217 Clear the error queue to ensure that error entries left from
5218 older function calls do not interfere with the correct operation.
5219 [Lutz Jaenicke, Erik de Castro Lopo]
5221 *) Remove root CA certificates of commercial CAs:
5223 The OpenSSL project does not recommend any specific CA and does not
5224 have any policy with respect to including or excluding any CA.
5225 Therefore it does not make any sense to ship an arbitrary selection
5226 of root CA certificates with the OpenSSL software.
5229 *) RSA OAEP patches to fix two separate invalid memory reads.
5230 The first one involves inputs when 'lzero' is greater than
5231 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
5232 before the beginning of from). The second one involves inputs where
5233 the 'db' section contains nothing but zeroes (there is a one-byte
5234 invalid read after the end of 'db').
5235 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5237 *) Partial backport from 0.9.9-dev:
5239 Introduce bn_mul_mont (dedicated Montgomery multiplication
5240 procedure) as a candidate for BIGNUM assembler implementation.
5241 While 0.9.9-dev uses assembler for various architectures, only
5242 x86_64 is available by default here in the 0.9.8 branch, and
5243 32-bit x86 is available through a compile-time setting.
5245 To try the 32-bit x86 assembler implementation, use Configure
5246 option "enable-montasm" (which exists only for this backport).
5248 As "enable-montasm" for 32-bit x86 disclaims code stability
5249 anyway, in this constellation we activate additional code
5250 backported from 0.9.9-dev for further performance improvements,
5251 namely BN_from_montgomery_word. (To enable this otherwise,
5252 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
5254 [Andy Polyakov (backport partially by Bodo Moeller)]
5256 *) Add TLS session ticket callback. This allows an application to set
5257 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
5258 values. This is useful for key rollover for example where several key
5259 sets may exist with different names.
5262 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
5263 This was broken until now in 0.9.8 releases, such that the only way
5264 a registered ENGINE could be used (assuming it initialises
5265 successfully on the host) was to explicitly set it as the default
5266 for the relevant algorithms. This is in contradiction with 0.9.7
5267 behaviour and the documentation. With this fix, when an ENGINE is
5268 registered into a given algorithm's table of implementations, the
5269 'uptodate' flag is reset so that auto-discovery will be used next
5270 time a new context for that algorithm attempts to select an
5272 [Ian Lister (tweaked by Geoff Thorpe)]
5274 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
5275 implementation in the following ways:
5277 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
5280 Lack of BER streaming support means one pass streaming processing is
5281 only supported if data is detached: setting the streaming flag is
5282 ignored for embedded content.
5284 CMS support is disabled by default and must be explicitly enabled
5285 with the enable-cms configuration option.
5288 *) Update the GMP engine glue to do direct copies between BIGNUM and
5289 mpz_t when openssl and GMP use the same limb size. Otherwise the
5290 existing "conversion via a text string export" trick is still used.
5291 [Paul Sheer <paulsheer@gmail.com>]
5293 *) Zlib compression BIO. This is a filter BIO which compressed and
5294 uncompresses any data passed through it.
5297 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
5298 RFC3394 compatible AES key wrapping.
5301 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
5302 sets string data without copying. X509_ALGOR_set0() and
5303 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
5304 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
5305 from an X509_ATTRIBUTE structure optionally checking it occurs only
5306 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
5310 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
5311 to get the expected BN_FLG_CONSTTIME behavior.
5312 [Bodo Moeller (Google)]
5316 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
5317 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
5318 - added some more tests to do_tests.pl
5319 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
5320 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
5321 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
5322 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
5323 - various changes to netware.pl to enable gcc-cross builds on Win32
5325 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
5326 - various changes to fix missing prototype warnings
5327 - fixed x86nasm.pl to create correct asm files for NASM COFF output
5328 - added AES, WHIRLPOOL and CPUID assembler code to build files
5329 - added missing AES assembler make rules to mk1mf.pl
5330 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
5331 [Guenter Knauf <eflash@gmx.net>]
5333 *) Implement certificate status request TLS extension defined in RFC3546.
5334 A client can set the appropriate parameters and receive the encoded
5335 OCSP response via a callback. A server can query the supplied parameters
5336 and set the encoded OCSP response in the callback. Add simplified examples
5337 to s_client and s_server.
5340 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
5342 *) Fix various bugs:
5343 + Binary incompatibility of ssl_ctx_st structure
5344 + DTLS interoperation with non-compliant servers
5345 + Don't call get_session_cb() without proposed session
5346 + Fix ia64 assembler code
5347 [Andy Polyakov, Steve Henson]
5349 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
5351 *) DTLS Handshake overhaul. There were longstanding issues with
5352 OpenSSL DTLS implementation, which were making it impossible for
5353 RFC 4347 compliant client to communicate with OpenSSL server.
5354 Unfortunately just fixing these incompatibilities would "cut off"
5355 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
5356 server keeps tolerating non RFC compliant syntax. The opposite is
5357 not true, 0.9.8f client can not communicate with earlier server.
5358 This update even addresses CVE-2007-4995.
5361 *) Changes to avoid need for function casts in OpenSSL: some compilers
5362 (gcc 4.2 and later) reject their use.
5363 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
5366 *) Add RFC4507 support to OpenSSL. This includes the corrections in
5367 RFC4507bis. The encrypted ticket format is an encrypted encoded
5368 SSL_SESSION structure, that way new session features are automatically
5371 If a client application caches session in an SSL_SESSION structure
5372 support is transparent because tickets are now stored in the encoded
5375 The SSL_CTX structure automatically generates keys for ticket
5376 protection in servers so again support should be possible
5377 with no application modification.
5379 If a client or server wishes to disable RFC4507 support then the option
5380 SSL_OP_NO_TICKET can be set.
5382 Add a TLS extension debugging callback to allow the contents of any client
5383 or server extensions to be examined.
5385 This work was sponsored by Google.
5388 *) Add initial support for TLS extensions, specifically for the server_name
5389 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5390 have new members for a host name. The SSL data structure has an
5391 additional member SSL_CTX *initial_ctx so that new sessions can be
5392 stored in that context to allow for session resumption, even after the
5393 SSL has been switched to a new SSL_CTX in reaction to a client's
5394 server_name extension.
5396 New functions (subject to change):
5398 SSL_get_servername()
5399 SSL_get_servername_type()
5402 New CTRL codes and macros (subject to change):
5404 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5405 - SSL_CTX_set_tlsext_servername_callback()
5406 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5407 - SSL_CTX_set_tlsext_servername_arg()
5408 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5410 openssl s_client has a new '-servername ...' option.
5412 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5413 '-key2 ...', '-servername_fatal' (subject to change). This allows
5414 testing the HostName extension for a specific single host name ('-cert'
5415 and '-key' remain fallbacks for handshakes without HostName
5416 negotiation). If the unrecognized_name alert has to be sent, this by
5417 default is a warning; it becomes fatal with the '-servername_fatal'
5420 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
5422 *) Add AES and SSE2 assembly language support to VC++ build.
5425 *) Mitigate attack on final subtraction in Montgomery reduction.
5428 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
5429 (which previously caused an internal error).
5432 *) Squeeze another 10% out of IGE mode when in != out.
5435 *) AES IGE mode speedup.
5436 [Dean Gaudet (Google)]
5438 *) Add the Korean symmetric 128-bit cipher SEED (see
5439 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
5440 add SEED ciphersuites from RFC 4162:
5442 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
5443 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
5444 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
5445 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
5447 To minimize changes between patchlevels in the OpenSSL 0.9.8
5448 series, SEED remains excluded from compilation unless OpenSSL
5449 is configured with 'enable-seed'.
5450 [KISA, Bodo Moeller]
5452 *) Mitigate branch prediction attacks, which can be practical if a
5453 single processor is shared, allowing a spy process to extract
5454 information. For detailed background information, see
5455 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
5456 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
5457 and Necessary Software Countermeasures"). The core of the change
5458 are new versions BN_div_no_branch() and
5459 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
5460 respectively, which are slower, but avoid the security-relevant
5461 conditional branches. These are automatically called by BN_div()
5462 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
5463 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
5464 remove a conditional branch.
5466 BN_FLG_CONSTTIME is the new name for the previous
5467 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
5468 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
5469 in the exponent causes BN_mod_exp_mont() to use the alternative
5470 implementation in BN_mod_exp_mont_consttime().) The old name
5471 remains as a deprecated alias.
5473 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
5474 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
5475 constant-time implementations for more than just exponentiation.
5476 Here too the old name is kept as a deprecated alias.
5478 BN_BLINDING_new() will now use BN_dup() for the modulus so that
5479 the BN_BLINDING structure gets an independent copy of the
5480 modulus. This means that the previous "BIGNUM *m" argument to
5481 BN_BLINDING_new() and to BN_BLINDING_create_param() now
5482 essentially becomes "const BIGNUM *m", although we can't actually
5483 change this in the header file before 0.9.9. It allows
5484 RSA_setup_blinding() to use BN_with_flags() on the modulus to
5485 enable BN_FLG_CONSTTIME.
5487 [Matthew D Wood (Intel Corp)]
5489 *) In the SSL/TLS server implementation, be strict about session ID
5490 context matching (which matters if an application uses a single
5491 external cache for different purposes). Previously,
5492 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
5493 set. This did ensure strict client verification, but meant that,
5494 with applications using a single external cache for quite
5495 different requirements, clients could circumvent ciphersuite
5496 restrictions for a given session ID context by starting a session
5497 in a different context.
5500 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
5501 a ciphersuite string such as "DEFAULT:RSA" cannot enable
5502 authentication-only ciphersuites.
5505 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
5506 not complete and could lead to a possible single byte overflow
5507 (CVE-2007-5135) [Ben Laurie]
5509 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
5511 *) Since AES128 and AES256 (and similarly Camellia128 and
5512 Camellia256) share a single mask bit in the logic of
5513 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
5514 kludge to work properly if AES128 is available and AES256 isn't
5515 (or if Camellia128 is available and Camellia256 isn't).
5518 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
5519 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
5520 When a point or a seed is encoded in a BIT STRING, we need to
5521 prevent the removal of trailing zero bits to get the proper DER
5522 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
5523 of a NamedBitList, for which trailing 0 bits need to be removed.)
5526 *) Have SSL/TLS server implementation tolerate "mismatched" record
5527 protocol version while receiving ClientHello even if the
5528 ClientHello is fragmented. (The server can't insist on the
5529 particular protocol version it has chosen before the ServerHello
5530 message has informed the client about his choice.)
5533 *) Add RFC 3779 support.
5534 [Rob Austein for ARIN, Ben Laurie]
5536 *) Load error codes if they are not already present instead of using a
5537 static variable. This allows them to be cleanly unloaded and reloaded.
5538 Improve header file function name parsing.
5541 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
5542 or CAPABILITY handshake as required by RFCs.
5545 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
5547 *) Introduce limits to prevent malicious keys being able to
5548 cause a denial of service. (CVE-2006-2940)
5549 [Steve Henson, Bodo Moeller]
5551 *) Fix ASN.1 parsing of certain invalid structures that can result
5552 in a denial of service. (CVE-2006-2937) [Steve Henson]
5554 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
5555 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
5557 *) Fix SSL client code which could crash if connecting to a
5558 malicious SSLv2 server. (CVE-2006-4343)
5559 [Tavis Ormandy and Will Drewry, Google Security Team]
5561 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
5562 match only those. Before that, "AES256-SHA" would be interpreted
5563 as a pattern and match "AES128-SHA" too (since AES128-SHA got
5564 the same strength classification in 0.9.7h) as we currently only
5565 have a single AES bit in the ciphersuite description bitmap.
5566 That change, however, also applied to ciphersuite strings such as
5567 "RC4-MD5" that intentionally matched multiple ciphersuites --
5568 namely, SSL 2.0 ciphersuites in addition to the more common ones
5569 from SSL 3.0/TLS 1.0.
5571 So we change the selection algorithm again: Naming an explicit
5572 ciphersuite selects this one ciphersuite, and any other similar
5573 ciphersuite (same bitmap) from *other* protocol versions.
5574 Thus, "RC4-MD5" again will properly select both the SSL 2.0
5575 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
5577 Since SSL 2.0 does not have any ciphersuites for which the
5578 128/256 bit distinction would be relevant, this works for now.
5579 The proper fix will be to use different bits for AES128 and
5580 AES256, which would have avoided the problems from the beginning;
5581 however, bits are scarce, so we can only do this in a new release
5582 (not just a patchlevel) when we can change the SSL_CIPHER
5583 definition to split the single 'unsigned long mask' bitmap into
5584 multiple values to extend the available space.
5588 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
5590 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
5591 (CVE-2006-4339) [Ben Laurie and Google Security Team]
5593 *) Add AES IGE and biIGE modes.
5596 *) Change the Unix randomness entropy gathering to use poll() when
5597 possible instead of select(), since the latter has some
5598 undesirable limitations.
5599 [Darryl Miles via Richard Levitte and Bodo Moeller]
5601 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
5602 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
5603 cannot be implicitly activated as part of, e.g., the "AES" alias.
5604 However, please upgrade to OpenSSL 0.9.9[-dev] for
5605 non-experimental use of the ECC ciphersuites to get TLS extension
5606 support, which is required for curve and point format negotiation
5607 to avoid potential handshake problems.
5610 *) Disable rogue ciphersuites:
5612 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
5613 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
5614 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
5616 The latter two were purportedly from
5617 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
5620 Also deactivate the remaining ciphersuites from
5621 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
5622 unofficial, and the ID has long expired.
5625 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
5626 dual-core machines) and other potential thread-safety issues.
5629 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
5630 versions), which is now available for royalty-free use
5631 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
5632 Also, add Camellia TLS ciphersuites from RFC 4132.
5634 To minimize changes between patchlevels in the OpenSSL 0.9.8
5635 series, Camellia remains excluded from compilation unless OpenSSL
5636 is configured with 'enable-camellia'.
5639 *) Disable the padding bug check when compression is in use. The padding
5640 bug check assumes the first packet is of even length, this is not
5641 necessarily true if compression is enabled and can result in false
5642 positives causing handshake failure. The actual bug test is ancient
5643 code so it is hoped that implementations will either have fixed it by
5644 now or any which still have the bug do not support compression.
5647 Changes between 0.9.8a and 0.9.8b [04 May 2006]
5649 *) When applying a cipher rule check to see if string match is an explicit
5650 cipher suite and only match that one cipher suite if it is.
5653 *) Link in manifests for VC++ if needed.
5654 [Austin Ziegler <halostatue@gmail.com>]
5656 *) Update support for ECC-based TLS ciphersuites according to
5657 draft-ietf-tls-ecc-12.txt with proposed changes (but without
5658 TLS extensions, which are supported starting with the 0.9.9
5659 branch, not in the OpenSSL 0.9.8 branch).
5662 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
5663 opaque EVP_CIPHER_CTX handling.
5666 *) Fixes and enhancements to zlib compression code. We now only use
5667 "zlib1.dll" and use the default __cdecl calling convention on Win32
5668 to conform with the standards mentioned here:
5669 http://www.zlib.net/DLL_FAQ.txt
5670 Static zlib linking now works on Windows and the new --with-zlib-include
5671 --with-zlib-lib options to Configure can be used to supply the location
5672 of the headers and library. Gracefully handle case where zlib library
5676 *) Several fixes and enhancements to the OID generation code. The old code
5677 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
5678 handle numbers larger than ULONG_MAX, truncated printing and had a
5679 non standard OBJ_obj2txt() behaviour.
5682 *) Add support for building of engines under engine/ as shared libraries
5683 under VC++ build system.
5686 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
5687 Hopefully, we will not see any false combination of paths any more.
5690 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
5692 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
5693 (part of SSL_OP_ALL). This option used to disable the
5694 countermeasure against man-in-the-middle protocol-version
5695 rollback in the SSL 2.0 server implementation, which is a bad
5696 idea. (CVE-2005-2969)
5698 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
5699 for Information Security, National Institute of Advanced Industrial
5700 Science and Technology [AIST], Japan)]
5702 *) Add two function to clear and return the verify parameter flags.
5705 *) Keep cipherlists sorted in the source instead of sorting them at
5706 runtime, thus removing the need for a lock.
5709 *) Avoid some small subgroup attacks in Diffie-Hellman.
5710 [Nick Mathewson and Ben Laurie]
5712 *) Add functions for well-known primes.
5715 *) Extended Windows CE support.
5716 [Satoshi Nakamura and Andy Polyakov]
5718 *) Initialize SSL_METHOD structures at compile time instead of during
5719 runtime, thus removing the need for a lock.
5722 *) Make PKCS7_decrypt() work even if no certificate is supplied by
5723 attempting to decrypt each encrypted key in turn. Add support to
5727 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
5729 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
5732 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
5735 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
5736 key into the same file any more.
5739 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
5742 *) Add -utf8 command line and config file option to 'ca'.
5743 [Stefan <stf@udoma.org]
5745 *) Removed the macro des_crypt(), as it seems to conflict with some
5746 libraries. Use DES_crypt().
5749 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
5750 involves renaming the source and generated shared-libs for
5751 both. The engines will accept the corrected or legacy ids
5752 ('ncipher' and '4758_cca' respectively) when binding. NB,
5753 this only applies when building 'shared'.
5754 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
5756 *) Add attribute functions to EVP_PKEY structure. Modify
5757 PKCS12_create() to recognize a CSP name attribute and
5758 use it. Make -CSP option work again in pkcs12 utility.
5761 *) Add new functionality to the bn blinding code:
5762 - automatic re-creation of the BN_BLINDING parameters after
5763 a fixed number of uses (currently 32)
5764 - add new function for parameter creation
5765 - introduce flags to control the update behaviour of the
5766 BN_BLINDING parameters
5767 - hide BN_BLINDING structure
5768 Add a second BN_BLINDING slot to the RSA structure to improve
5769 performance when a single RSA object is shared among several
5773 *) Add support for DTLS.
5774 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
5776 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
5777 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
5780 *) Remove buggy and incomplete DH cert support from
5781 ssl/ssl_rsa.c and ssl/s3_both.c
5784 *) Use SHA-1 instead of MD5 as the default digest algorithm for
5785 the apps/openssl applications.
5788 *) Compile clean with "-Wall -Wmissing-prototypes
5789 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
5790 DEBUG_SAFESTACK must also be set.
5793 *) Change ./Configure so that certain algorithms can be disabled by default.
5794 The new counterpiece to "no-xxx" is "enable-xxx".
5796 The patented RC5 and MDC2 algorithms will now be disabled unless
5797 "enable-rc5" and "enable-mdc2", respectively, are specified.
5799 (IDEA remains enabled despite being patented. This is because IDEA
5800 is frequently required for interoperability, and there is no license
5801 fee for non-commercial use. As before, "no-idea" can be used to
5802 avoid this algorithm.)
5806 *) Add processing of proxy certificates (see RFC 3820). This work was
5807 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
5808 EGEE (Enabling Grids for E-science in Europe).
5811 *) RC4 performance overhaul on modern architectures/implementations, such
5812 as Intel P4, IA-64 and AMD64.
5815 *) New utility extract-section.pl. This can be used specify an alternative
5816 section number in a pod file instead of having to treat each file as
5817 a separate case in Makefile. This can be done by adding two lines to the
5820 =for comment openssl_section:XXX
5822 The blank line is mandatory.
5826 *) New arguments -certform, -keyform and -pass for s_client and s_server
5827 to allow alternative format key and certificate files and passphrase
5831 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
5832 update associated structures and add various utility functions.
5834 Add new policy related verify parameters, include policy checking in
5835 standard verify code. Enhance 'smime' application with extra parameters
5836 to support policy checking and print out.
5839 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
5840 Nehemiah processors. These extensions support AES encryption in hardware
5841 as well as RNG (though RNG support is currently disabled).
5842 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
5844 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
5847 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
5848 [Andy Polyakov and a number of other people]
5850 *) Improved PowerPC platform support. Most notably BIGNUM assembler
5851 implementation contributed by IBM.
5852 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
5854 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
5855 exponent rather than 'unsigned long'. There is a corresponding change to
5856 the new 'rsa_keygen' element of the RSA_METHOD structure.
5857 [Jelte Jansen, Geoff Thorpe]
5859 *) Functionality for creating the initial serial number file is now
5860 moved from CA.pl to the 'ca' utility with a new option -create_serial.
5862 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
5863 number file to 1, which is bound to cause problems. To avoid
5864 the problems while respecting compatibility between different 0.9.7
5865 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
5866 CA.pl for serial number initialization. With the new release 0.9.8,
5867 we can fix the problem directly in the 'ca' utility.)
5870 *) Reduced header interdependencies by declaring more opaque objects in
5871 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
5872 give fewer recursive includes, which could break lazy source code - so
5873 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
5874 developers should define this symbol when building and using openssl to
5875 ensure they track the recommended behaviour, interfaces, [etc], but
5876 backwards-compatible behaviour prevails when this isn't defined.
5879 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
5882 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
5883 This will generate a random key of the appropriate length based on the
5884 cipher context. The EVP_CIPHER can provide its own random key generation
5885 routine to support keys of a specific form. This is used in the des and
5886 3des routines to generate a key of the correct parity. Update S/MIME
5887 code to use new functions and hence generate correct parity DES keys.
5888 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
5889 valid (weak or incorrect parity).
5892 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
5893 as looking them up. This is useful when the verified structure may contain
5894 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
5895 present unless the new PKCS7_NO_CRL flag is asserted.
5898 *) Extend ASN1 oid configuration module. It now additionally accepts the
5901 shortName = some long name, 1.2.3.4
5904 *) Reimplemented the BN_CTX implementation. There is now no more static
5905 limitation on the number of variables it can handle nor the depth of the
5906 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
5907 information can now expand as required, and rather than having a single
5908 static array of bignums, BN_CTX now uses a linked-list of such arrays
5909 allowing it to expand on demand whilst maintaining the usefulness of
5910 BN_CTX's "bundling".
5913 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
5914 to allow all RSA operations to function using a single BN_CTX.
5917 *) Preliminary support for certificate policy evaluation and checking. This
5918 is initially intended to pass the tests outlined in "Conformance Testing
5919 of Relying Party Client Certificate Path Processing Logic" v1.07.
5922 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
5923 remained unused and not that useful. A variety of other little bignum
5924 tweaks and fixes have also been made continuing on from the audit (see
5928 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
5929 associated ASN1, EVP and SSL functions and old ASN1 macros.
5932 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
5933 and this should never fail. So the return value from the use of
5934 BN_set_word() (which can fail due to needless expansion) is now deprecated;
5935 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
5938 *) BN_CTX_get() should return zero-valued bignums, providing the same
5939 initialised value as BN_new().
5940 [Geoff Thorpe, suggested by Ulf Möller]
5942 *) Support for inhibitAnyPolicy certificate extension.
5945 *) An audit of the BIGNUM code is underway, for which debugging code is
5946 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
5947 is considered valid when processing BIGNUMs, and causes execution to
5948 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
5949 further steps are taken to deliberately pollute unused data in BIGNUM
5950 structures to try and expose faulty code further on. For now, openssl will
5951 (in its default mode of operation) continue to tolerate the inconsistent
5952 forms that it has tolerated in the past, but authors and packagers should
5953 consider trying openssl and their own applications when compiled with
5954 these debugging symbols defined. It will help highlight potential bugs in
5955 their own code, and will improve the test coverage for OpenSSL itself. At
5956 some point, these tighter rules will become openssl's default to improve
5957 maintainability, though the assert()s and other overheads will remain only
5958 in debugging configurations. See bn.h for more details.
5959 [Geoff Thorpe, Nils Larsch, Ulf Möller]
5961 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
5962 that can only be obtained through BN_CTX_new() (which implicitly
5963 initialises it). The presence of this function only made it possible
5964 to overwrite an existing structure (and cause memory leaks).
5967 *) Because of the callback-based approach for implementing LHASH as a
5968 template type, lh_insert() adds opaque objects to hash-tables and
5969 lh_doall() or lh_doall_arg() are typically used with a destructor callback
5970 to clean up those corresponding objects before destroying the hash table
5971 (and losing the object pointers). So some over-zealous constifications in
5972 LHASH have been relaxed so that lh_insert() does not take (nor store) the
5973 objects as "const" and the lh_doall[_arg] callback wrappers are not
5974 prototyped to have "const" restrictions on the object pointers they are
5975 given (and so aren't required to cast them away any more).
5978 *) The tmdiff.h API was so ugly and minimal that our own timing utility
5979 (speed) prefers to use its own implementation. The two implementations
5980 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
5981 its object type properly exposed (MS_TM) instead of casting to/from "char
5982 *". This may still change yet if someone realises MS_TM and "ms_time_***"
5983 aren't necessarily the greatest nomenclatures - but this is what was used
5984 internally to the implementation so I've used that for now.
5987 *) Ensure that deprecated functions do not get compiled when
5988 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
5989 the self-tests were still using deprecated key-generation functions so
5990 these have been updated also.
5993 *) Reorganise PKCS#7 code to separate the digest location functionality
5994 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
5995 New function PKCS7_set_digest() to set the digest type for PKCS#7
5996 digestedData type. Add additional code to correctly generate the
5997 digestedData type and add support for this type in PKCS7 initialization
6001 *) New function PKCS7_set0_type_other() this initializes a PKCS7
6002 structure of type "other".
6005 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
6006 sure the loop does correctly stop and breaking ("division by zero")
6007 modulus operations are not performed. The (pre-generated) prime
6008 table crypto/bn/bn_prime.h was already correct, but it could not be
6009 re-generated on some platforms because of the "division by zero"
6010 situation in the script.
6011 [Ralf S. Engelschall]
6013 *) Update support for ECC-based TLS ciphersuites according to
6014 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
6015 SHA-1 now is only used for "small" curves (where the
6016 representation of a field element takes up to 24 bytes); for
6017 larger curves, the field element resulting from ECDH is directly
6018 used as premaster secret.
6019 [Douglas Stebila (Sun Microsystems Laboratories)]
6021 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
6022 curve secp160r1 to the tests.
6023 [Douglas Stebila (Sun Microsystems Laboratories)]
6025 *) Add the possibility to load symbols globally with DSO.
6026 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
6028 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
6029 control of the error stack.
6032 *) Add support for STORE in ENGINE.
6035 *) Add the STORE type. The intention is to provide a common interface
6036 to certificate and key stores, be they simple file-based stores, or
6037 HSM-type store, or LDAP stores, or...
6038 NOTE: The code is currently UNTESTED and isn't really used anywhere.
6041 *) Add a generic structure called OPENSSL_ITEM. This can be used to
6042 pass a list of arguments to any function as well as provide a way
6043 for a function to pass data back to the caller.
6046 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
6047 works like BUF_strdup() but can be used to duplicate a portion of
6048 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
6052 *) Add the function sk_find_ex() which works like sk_find(), but will
6053 return an index to an element even if an exact match couldn't be
6054 found. The index is guaranteed to point at the element where the
6055 searched-for key would be inserted to preserve sorting order.
6058 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
6059 takes an extra flags argument for optional functionality. Currently,
6060 the following flags are defined:
6062 OBJ_BSEARCH_VALUE_ON_NOMATCH
6063 This one gets OBJ_bsearch_ex() to return a pointer to the first
6064 element where the comparing function returns a negative or zero
6067 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
6068 This one gets OBJ_bsearch_ex() to return a pointer to the first
6069 element where the comparing function returns zero. This is useful
6070 if there are more than one element where the comparing function
6074 *) Make it possible to create self-signed certificates with 'openssl ca'
6075 in such a way that the self-signed certificate becomes part of the
6076 CA database and uses the same mechanisms for serial number generation
6077 as all other certificate signing. The new flag '-selfsign' enables
6078 this functionality. Adapt CA.sh and CA.pl.in.
6081 *) Add functionality to check the public key of a certificate request
6082 against a given private. This is useful to check that a certificate
6083 request can be signed by that key (self-signing).
6086 *) Make it possible to have multiple active certificates with the same
6087 subject in the CA index file. This is done only if the keyword
6088 'unique_subject' is set to 'no' in the main CA section (default
6089 if 'CA_default') of the configuration file. The value is saved
6090 with the database itself in a separate index attribute file,
6091 named like the index file with '.attr' appended to the name.
6094 *) Generate multi-valued AVAs using '+' notation in config files for
6098 *) Support for nameConstraints certificate extension.
6101 *) Support for policyConstraints certificate extension.
6104 *) Support for policyMappings certificate extension.
6107 *) Make sure the default DSA_METHOD implementation only uses its
6108 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
6109 and change its own handlers to be NULL so as to remove unnecessary
6110 indirection. This lets alternative implementations fallback to the
6111 default implementation more easily.
6114 *) Support for directoryName in GeneralName related extensions
6118 *) Make it possible to link applications using Makefile.shared.
6119 Make that possible even when linking against static libraries!
6122 *) Support for single pass processing for S/MIME signing. This now
6123 means that S/MIME signing can be done from a pipe, in addition
6124 cleartext signing (multipart/signed type) is effectively streaming
6125 and the signed data does not need to be all held in memory.
6127 This is done with a new flag PKCS7_STREAM. When this flag is set
6128 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
6129 is done after the data is output (and digests calculated) in
6130 SMIME_write_PKCS7().
6133 *) Add full support for -rpath/-R, both in shared libraries and
6134 applications, at least on the platforms where it's known how
6138 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
6139 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
6140 will now compute a table of multiples of the generator that
6141 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
6142 faster (notably in the case of a single point multiplication,
6143 scalar * generator).
6144 [Nils Larsch, Bodo Moeller]
6146 *) IPv6 support for certificate extensions. The various extensions
6147 which use the IP:a.b.c.d can now take IPv6 addresses using the
6148 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
6152 *) Added an ENGINE that implements RSA by performing private key
6153 exponentiations with the GMP library. The conversions to and from
6154 GMP's mpz_t format aren't optimised nor are any montgomery forms
6155 cached, and on x86 it appears OpenSSL's own performance has caught up.
6156 However there are likely to be other architectures where GMP could
6157 provide a boost. This ENGINE is not built in by default, but it can be
6158 specified at Configure time and should be accompanied by the necessary
6159 linker additions, eg;
6160 ./config -DOPENSSL_USE_GMP -lgmp
6163 *) "openssl engine" will not display ENGINE/DSO load failure errors when
6164 testing availability of engines with "-t" - the old behaviour is
6165 produced by increasing the feature's verbosity with "-tt".
6168 *) ECDSA routines: under certain error conditions uninitialized BN objects
6169 could be freed. Solution: make sure initialization is performed early
6170 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
6174 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
6175 and DH_METHOD (eg. by ENGINE implementations) to override the normal
6176 software implementations. For DSA and DH, parameter generation can
6177 also be overridden by providing the appropriate method callbacks.
6180 *) Change the "progress" mechanism used in key-generation and
6181 primality testing to functions that take a new BN_GENCB pointer in
6182 place of callback/argument pairs. The new API functions have "_ex"
6183 postfixes and the older functions are reimplemented as wrappers for
6184 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
6185 declarations of the old functions to help (graceful) attempts to
6186 migrate to the new functions. Also, the new key-generation API
6187 functions operate on a caller-supplied key-structure and return
6188 success/failure rather than returning a key or NULL - this is to
6189 help make "keygen" another member function of RSA_METHOD etc.
6191 Example for using the new callback interface:
6193 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
6197 BN_GENCB_set(&my_cb, my_callback, my_arg);
6199 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
6200 /* For the meaning of a, b in calls to my_callback(), see the
6201 * documentation of the function that calls the callback.
6202 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
6203 * my_callback should return 1 if it wants BN_is_prime_ex()
6204 * to continue, or 0 to stop.
6209 *) Change the ZLIB compression method to be stateful, and make it
6210 available to TLS with the number defined in
6211 draft-ietf-tls-compression-04.txt.
6214 *) Add the ASN.1 structures and functions for CertificatePair, which
6215 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
6217 CertificatePair ::= SEQUENCE {
6218 forward [0] Certificate OPTIONAL,
6219 reverse [1] Certificate OPTIONAL,
6220 -- at least one of the pair shall be present -- }
6222 Also implement the PEM functions to read and write certificate
6223 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
6225 This needed to be defined, mostly for the sake of the LDAP
6226 attribute crossCertificatePair, but may prove useful elsewhere as
6230 *) Make it possible to inhibit symlinking of shared libraries in
6231 Makefile.shared, for Cygwin's sake.
6234 *) Extend the BIGNUM API by creating a function
6235 void BN_set_negative(BIGNUM *a, int neg);
6236 and a macro that behave like
6237 int BN_is_negative(const BIGNUM *a);
6239 to avoid the need to access 'a->neg' directly in applications.
6242 *) Implement fast modular reduction for pseudo-Mersenne primes
6243 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
6244 EC_GROUP_new_curve_GFp() will now automatically use this
6246 [Nils Larsch <nla@trustcenter.de>]
6248 *) Add new lock type (CRYPTO_LOCK_BN).
6251 *) Change the ENGINE framework to automatically load engines
6252 dynamically from specific directories unless they could be
6253 found to already be built in or loaded. Move all the
6254 current engines except for the cryptodev one to a new
6256 The engines in engines/ are built as shared libraries if
6257 the "shared" options was given to ./Configure or ./config.
6258 Otherwise, they are inserted in libcrypto.a.
6259 /usr/local/ssl/engines is the default directory for dynamic
6260 engines, but that can be overridden at configure time through
6261 the usual use of --prefix and/or --openssldir, and at run
6262 time with the environment variable OPENSSL_ENGINES.
6263 [Geoff Thorpe and Richard Levitte]
6265 *) Add Makefile.shared, a helper makefile to build shared
6266 libraries. Adapt Makefile.org.
6269 *) Add version info to Win32 DLLs.
6270 [Peter 'Luna' Runestig" <peter@runestig.com>]
6272 *) Add new 'medium level' PKCS#12 API. Certificates and keys
6273 can be added using this API to created arbitrary PKCS#12
6274 files while avoiding the low level API.
6276 New options to PKCS12_create(), key or cert can be NULL and
6277 will then be omitted from the output file. The encryption
6278 algorithm NIDs can be set to -1 for no encryption, the mac
6279 iteration count can be set to 0 to omit the mac.
6281 Enhance pkcs12 utility by making the -nokeys and -nocerts
6282 options work when creating a PKCS#12 file. New option -nomac
6283 to omit the mac, NONE can be set for an encryption algorithm.
6284 New code is modified to use the enhanced PKCS12_create()
6285 instead of the low level API.
6288 *) Extend ASN1 encoder to support indefinite length constructed
6289 encoding. This can output sequences tags and octet strings in
6290 this form. Modify pk7_asn1.c to support indefinite length
6291 encoding. This is experimental and needs additional code to
6292 be useful, such as an ASN1 bio and some enhanced streaming
6295 Extend template encode functionality so that tagging is passed
6296 down to the template encoder.
6299 *) Let 'openssl req' fail if an argument to '-newkey' is not
6300 recognized instead of using RSA as a default.
6303 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
6304 As these are not official, they are not included in "ALL";
6305 the "ECCdraft" ciphersuite group alias can be used to select them.
6306 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
6308 *) Add ECDH engine support.
6309 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
6311 *) Add ECDH in new directory crypto/ecdh/.
6312 [Douglas Stebila (Sun Microsystems Laboratories)]
6314 *) Let BN_rand_range() abort with an error after 100 iterations
6315 without success (which indicates a broken PRNG).
6318 *) Change BN_mod_sqrt() so that it verifies that the input value
6319 is really the square of the return value. (Previously,
6320 BN_mod_sqrt would show GIGO behaviour.)
6323 *) Add named elliptic curves over binary fields from X9.62, SECG,
6324 and WAP/WTLS; add OIDs that were still missing.
6326 [Sheueling Chang Shantz and Douglas Stebila
6327 (Sun Microsystems Laboratories)]
6329 *) Extend the EC library for elliptic curves over binary fields
6330 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
6333 EC_GF2m_simple_method
6337 EC_GROUP_new_curve_GF2m
6338 EC_GROUP_set_curve_GF2m
6339 EC_GROUP_get_curve_GF2m
6340 EC_POINT_set_affine_coordinates_GF2m
6341 EC_POINT_get_affine_coordinates_GF2m
6342 EC_POINT_set_compressed_coordinates_GF2m
6344 Point compression for binary fields is disabled by default for
6345 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
6348 As binary polynomials are represented as BIGNUMs, various members
6349 of the EC_GROUP and EC_POINT data structures can be shared
6350 between the implementations for prime fields and binary fields;
6351 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
6352 are essentially identical to their ..._GFp counterparts.
6353 (For simplicity, the '..._GFp' prefix has been dropped from
6354 various internal method names.)
6356 An internal 'field_div' method (similar to 'field_mul' and
6357 'field_sqr') has been added; this is used only for binary fields.
6359 [Sheueling Chang Shantz and Douglas Stebila
6360 (Sun Microsystems Laboratories)]
6362 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
6363 through methods ('mul', 'precompute_mult').
6365 The generic implementations (now internally called 'ec_wNAF_mul'
6366 and 'ec_wNAF_precomputed_mult') remain the default if these
6367 methods are undefined.
6369 [Sheueling Chang Shantz and Douglas Stebila
6370 (Sun Microsystems Laboratories)]
6372 *) New function EC_GROUP_get_degree, which is defined through
6373 EC_METHOD. For curves over prime fields, this returns the bit
6374 length of the modulus.
6376 [Sheueling Chang Shantz and Douglas Stebila
6377 (Sun Microsystems Laboratories)]
6379 *) New functions EC_GROUP_dup, EC_POINT_dup.
6380 (These simply call ..._new and ..._copy).
6382 [Sheueling Chang Shantz and Douglas Stebila
6383 (Sun Microsystems Laboratories)]
6385 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
6386 Polynomials are represented as BIGNUMs (where the sign bit is not
6387 used) in the following functions [macros]:
6390 BN_GF2m_sub [= BN_GF2m_add]
6391 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
6392 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
6393 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
6395 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
6396 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
6397 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
6398 BN_GF2m_cmp [= BN_ucmp]
6400 (Note that only the 'mod' functions are actually for fields GF(2^m).
6401 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
6403 For some functions, an the irreducible polynomial defining a
6404 field can be given as an 'unsigned int[]' with strictly
6405 decreasing elements giving the indices of those bits that are set;
6406 i.e., p[] represents the polynomial
6407 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
6409 p[0] > p[1] > ... > p[k] = 0.
6410 This applies to the following functions:
6415 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
6416 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
6418 BN_GF2m_mod_sqrt_arr
6419 BN_GF2m_mod_solve_quad_arr
6423 Conversion can be performed by the following functions:
6428 bntest.c has additional tests for binary polynomial arithmetic.
6430 Two implementations for BN_GF2m_mod_div() are available.
6431 The default algorithm simply uses BN_GF2m_mod_inv() and
6432 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
6433 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
6434 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
6436 [Sheueling Chang Shantz and Douglas Stebila
6437 (Sun Microsystems Laboratories)]
6439 *) Add new error code 'ERR_R_DISABLED' that can be used when some
6440 functionality is disabled at compile-time.
6441 [Douglas Stebila <douglas.stebila@sun.com>]
6443 *) Change default behaviour of 'openssl asn1parse' so that more
6444 information is visible when viewing, e.g., a certificate:
6446 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
6447 mode the content of non-printable OCTET STRINGs is output in a
6448 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
6449 avoid the appearance of a printable string.
6450 [Nils Larsch <nla@trustcenter.de>]
6452 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
6454 EC_GROUP_set_asn1_flag()
6455 EC_GROUP_get_asn1_flag()
6456 EC_GROUP_set_point_conversion_form()
6457 EC_GROUP_get_point_conversion_form()
6458 These control ASN1 encoding details:
6459 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
6460 has been set to OPENSSL_EC_NAMED_CURVE.
6461 - Points are encoded in uncompressed form by default; options for
6462 asn1_for are as for point2oct, namely
6463 POINT_CONVERSION_COMPRESSED
6464 POINT_CONVERSION_UNCOMPRESSED
6465 POINT_CONVERSION_HYBRID
6467 Also add 'seed' and 'seed_len' members to EC_GROUP with access
6470 EC_GROUP_get0_seed()
6471 EC_GROUP_get_seed_len()
6472 This is used only for ASN1 purposes (so far).
6473 [Nils Larsch <nla@trustcenter.de>]
6475 *) Add 'field_type' member to EC_METHOD, which holds the NID
6476 of the appropriate field type OID. The new function
6477 EC_METHOD_get_field_type() returns this value.
6478 [Nils Larsch <nla@trustcenter.de>]
6483 EC_POINT_point2hex()
6484 EC_POINT_hex2point()
6485 providing useful interfaces to EC_POINT_point2oct() and
6486 EC_POINT_oct2point().
6487 [Nils Larsch <nla@trustcenter.de>]
6489 *) Change internals of the EC library so that the functions
6490 EC_GROUP_set_generator()
6491 EC_GROUP_get_generator()
6492 EC_GROUP_get_order()
6493 EC_GROUP_get_cofactor()
6494 are implemented directly in crypto/ec/ec_lib.c and not dispatched
6495 to methods, which would lead to unnecessary code duplication when
6496 adding different types of curves.
6497 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
6499 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
6500 arithmetic, and such that modified wNAFs are generated
6501 (which avoid length expansion in many cases).
6504 *) Add a function EC_GROUP_check_discriminant() (defined via
6505 EC_METHOD) that verifies that the curve discriminant is non-zero.
6507 Add a function EC_GROUP_check() that makes some sanity tests
6508 on a EC_GROUP, its generator and order. This includes
6509 EC_GROUP_check_discriminant().
6510 [Nils Larsch <nla@trustcenter.de>]
6512 *) Add ECDSA in new directory crypto/ecdsa/.
6514 Add applications 'openssl ecparam' and 'openssl ecdsa'
6515 (these are based on 'openssl dsaparam' and 'openssl dsa').
6517 ECDSA support is also included in various other files across the
6518 library. Most notably,
6519 - 'openssl req' now has a '-newkey ecdsa:file' option;
6520 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
6521 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
6522 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
6523 them suitable for ECDSA where domain parameters must be
6524 extracted before the specific public key;
6525 - ECDSA engine support has been added.
6526 [Nils Larsch <nla@trustcenter.de>]
6528 *) Include some named elliptic curves, and add OIDs from X9.62,
6529 SECG, and WAP/WTLS. Each curve can be obtained from the new
6531 EC_GROUP_new_by_curve_name(),
6532 and the list of available named curves can be obtained with
6533 EC_get_builtin_curves().
6534 Also add a 'curve_name' member to EC_GROUP objects, which can be
6536 EC_GROUP_set_curve_name()
6537 EC_GROUP_get_curve_name()
6538 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
6540 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6541 was actually never needed) and in BN_mul(). The removal in BN_mul()
6542 required a small change in bn_mul_part_recursive() and the addition
6543 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6544 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6545 bn_sub_words() and bn_add_words() except they take arrays with
6549 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
6551 *) Cleanse PEM buffers before freeing them since they may contain
6553 [Benjamin Bennett <ben@psc.edu>]
6555 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
6556 a ciphersuite string such as "DEFAULT:RSA" cannot enable
6557 authentication-only ciphersuites.
6560 *) Since AES128 and AES256 share a single mask bit in the logic of
6561 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
6562 kludge to work properly if AES128 is available and AES256 isn't.
6565 *) Expand security boundary to match 1.1.1 module.
6568 *) Remove redundant features: hash file source, editing of test vectors
6569 modify fipsld to use external fips_premain.c signature.
6572 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
6573 run algorithm test programs.
6576 *) Make algorithm test programs more tolerant of whitespace.
6579 *) Have SSL/TLS server implementation tolerate "mismatched" record
6580 protocol version while receiving ClientHello even if the
6581 ClientHello is fragmented. (The server can't insist on the
6582 particular protocol version it has chosen before the ServerHello
6583 message has informed the client about his choice.)
6586 *) Load error codes if they are not already present instead of using a
6587 static variable. This allows them to be cleanly unloaded and reloaded.
6590 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
6592 *) Introduce limits to prevent malicious keys being able to
6593 cause a denial of service. (CVE-2006-2940)
6594 [Steve Henson, Bodo Moeller]
6596 *) Fix ASN.1 parsing of certain invalid structures that can result
6597 in a denial of service. (CVE-2006-2937) [Steve Henson]
6599 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
6600 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
6602 *) Fix SSL client code which could crash if connecting to a
6603 malicious SSLv2 server. (CVE-2006-4343)
6604 [Tavis Ormandy and Will Drewry, Google Security Team]
6606 *) Change ciphersuite string processing so that an explicit
6607 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
6608 will no longer include "AES128-SHA"), and any other similar
6609 ciphersuite (same bitmap) from *other* protocol versions (so that
6610 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
6611 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
6612 changes from 0.9.8b and 0.9.8d.
6615 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
6617 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
6618 (CVE-2006-4339) [Ben Laurie and Google Security Team]
6620 *) Change the Unix randomness entropy gathering to use poll() when
6621 possible instead of select(), since the latter has some
6622 undesirable limitations.
6623 [Darryl Miles via Richard Levitte and Bodo Moeller]
6625 *) Disable rogue ciphersuites:
6627 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
6628 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
6629 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
6631 The latter two were purportedly from
6632 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
6635 Also deactivate the remaining ciphersuites from
6636 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
6637 unofficial, and the ID has long expired.
6640 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
6641 dual-core machines) and other potential thread-safety issues.
6644 Changes between 0.9.7i and 0.9.7j [04 May 2006]
6646 *) Adapt fipsld and the build system to link against the validated FIPS
6647 module in FIPS mode.
6650 *) Fixes for VC++ 2005 build under Windows.
6653 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
6654 from a Windows bash shell such as MSYS. It is autodetected from the
6655 "config" script when run from a VC++ environment. Modify standard VC++
6656 build to use fipscanister.o from the GNU make build.
6659 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
6661 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
6662 The value now differs depending on if you build for FIPS or not.
6663 BEWARE! A program linked with a shared FIPSed libcrypto can't be
6664 safely run with a non-FIPSed libcrypto, as it may crash because of
6665 the difference induced by this change.
6668 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
6670 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
6671 (part of SSL_OP_ALL). This option used to disable the
6672 countermeasure against man-in-the-middle protocol-version
6673 rollback in the SSL 2.0 server implementation, which is a bad
6674 idea. (CVE-2005-2969)
6676 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
6677 for Information Security, National Institute of Advanced Industrial
6678 Science and Technology [AIST], Japan)]
6680 *) Minimal support for X9.31 signatures and PSS padding modes. This is
6681 mainly for FIPS compliance and not fully integrated at this stage.
6684 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
6685 the exponentiation using a fixed-length exponent. (Otherwise,
6686 the information leaked through timing could expose the secret key
6687 after many signatures; cf. Bleichenbacher's attack on DSA with
6691 *) Make a new fixed-window mod_exp implementation the default for
6692 RSA, DSA, and DH private-key operations so that the sequence of
6693 squares and multiplies and the memory access pattern are
6694 independent of the particular secret key. This will mitigate
6695 cache-timing and potential related attacks.
6697 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
6698 and this is automatically used by BN_mod_exp_mont() if the new flag
6699 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
6700 will use this BN flag for private exponents unless the flag
6701 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
6702 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
6704 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
6706 *) Change the client implementation for SSLv23_method() and
6707 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
6708 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
6709 (Previously, the SSL 2.0 backwards compatible Client Hello
6710 message format would be used even with SSL_OP_NO_SSLv2.)
6713 *) Add support for smime-type MIME parameter in S/MIME messages which some
6717 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
6718 a threadsafe manner. Modify rsa code to use new function and add calls
6719 to dsa and dh code (which had race conditions before).
6722 *) Include the fixed error library code in the C error file definitions
6723 instead of fixing them up at runtime. This keeps the error code
6724 structures constant.
6727 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
6729 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
6732 *) Fixes for newer kerberos headers. NB: the casts are needed because
6733 the 'length' field is signed on one version and unsigned on another
6734 with no (?) obvious way to tell the difference, without these VC++
6735 complains. Also the "definition" of FAR (blank) is no longer included
6736 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
6737 some needed definitions.
6740 *) Undo Cygwin change.
6743 *) Added support for proxy certificates according to RFC 3820.
6744 Because they may be a security thread to unaware applications,
6745 they must be explicitly allowed in run-time. See
6746 docs/HOWTO/proxy_certificates.txt for further information.
6749 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
6751 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
6752 server and client random values. Previously
6753 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
6754 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
6756 This change has negligible security impact because:
6758 1. Server and client random values still have 24 bytes of pseudo random
6761 2. Server and client random values are sent in the clear in the initial
6764 3. The master secret is derived using the premaster secret (48 bytes in
6765 size for static RSA ciphersuites) as well as client server and random
6768 The OpenSSL team would like to thank the UK NISCC for bringing this issue
6771 [Stephen Henson, reported by UK NISCC]
6773 *) Use Windows randomness collection on Cygwin.
6776 *) Fix hang in EGD/PRNGD query when communication socket is closed
6777 prematurely by EGD/PRNGD.
6778 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
6780 *) Prompt for pass phrases when appropriate for PKCS12 input format.
6783 *) Back-port of selected performance improvements from development
6784 branch, as well as improved support for PowerPC platforms.
6787 *) Add lots of checks for memory allocation failure, error codes to indicate
6788 failure and freeing up memory if a failure occurs.
6789 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
6791 *) Add new -passin argument to dgst.
6794 *) Perform some character comparisons of different types in X509_NAME_cmp:
6795 this is needed for some certificates that re-encode DNs into UTF8Strings
6796 (in violation of RFC3280) and can't or won't issue name rollover
6800 *) Make an explicit check during certificate validation to see that
6801 the CA setting in each certificate on the chain is correct. As a
6802 side effect always do the following basic checks on extensions,
6803 not just when there's an associated purpose to the check:
6805 - if there is an unhandled critical extension (unless the user
6806 has chosen to ignore this fault)
6807 - if the path length has been exceeded (if one is set at all)
6808 - that certain extensions fit the associated purpose (if one has
6812 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
6814 *) Avoid a race condition when CRLs are checked in a multi threaded
6815 environment. This would happen due to the reordering of the revoked
6816 entries during signature checking and serial number lookup. Now the
6817 encoding is cached and the serial number sort performed under a lock.
6818 Add new STACK function sk_is_sorted().
6821 *) Add Delta CRL to the extension code.
6824 *) Various fixes to s3_pkt.c so alerts are sent properly.
6825 [David Holmes <d.holmes@f5.com>]
6827 *) Reduce the chances of duplicate issuer name and serial numbers (in
6828 violation of RFC3280) using the OpenSSL certificate creation utilities.
6829 This is done by creating a random 64 bit value for the initial serial
6830 number when a serial number file is created or when a self signed
6831 certificate is created using 'openssl req -x509'. The initial serial
6832 number file is created using 'openssl x509 -next_serial' in CA.pl
6833 rather than being initialized to 1.
6836 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
6838 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
6839 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
6840 [Joe Orton, Steve Henson]
6842 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
6844 [Joe Orton, Steve Henson]
6846 *) Make it possible to have multiple active certificates with the same
6847 subject in the CA index file. This is done only if the keyword
6848 'unique_subject' is set to 'no' in the main CA section (default
6849 if 'CA_default') of the configuration file. The value is saved
6850 with the database itself in a separate index attribute file,
6851 named like the index file with '.attr' appended to the name.
6854 *) X509 verify fixes. Disable broken certificate workarounds when
6855 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
6856 keyUsage extension present. Don't accept CRLs with unhandled critical
6857 extensions: since verify currently doesn't process CRL extensions this
6858 rejects a CRL with *any* critical extensions. Add new verify error codes
6862 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
6863 A clarification of RFC2560 will require the use of OCTET STRINGs and
6864 some implementations cannot handle the current raw format. Since OpenSSL
6865 copies and compares OCSP nonces as opaque blobs without any attempt at
6866 parsing them this should not create any compatibility issues.
6869 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
6870 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
6871 this HMAC (and other) operations are several times slower than OpenSSL
6875 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
6876 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
6878 *) Use the correct content when signing type "other".
6881 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
6883 *) Fix various bugs revealed by running the NISCC test suite:
6885 Stop out of bounds reads in the ASN1 code when presented with
6886 invalid tags (CVE-2003-0543 and CVE-2003-0544).
6888 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
6890 If verify callback ignores invalid public key errors don't try to check
6891 certificate signature with the NULL public key.
6895 *) New -ignore_err option in ocsp application to stop the server
6896 exiting on the first error in a request.
6899 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
6900 if the server requested one: as stated in TLS 1.0 and SSL 3.0
6904 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
6905 extra data after the compression methods not only for TLS 1.0
6906 but also for SSL 3.0 (as required by the specification).
6907 [Bodo Moeller; problem pointed out by Matthias Loepfe]
6909 *) Change X509_certificate_type() to mark the key as exported/exportable
6910 when it's 512 *bits* long, not 512 bytes.
6913 *) Change AES_cbc_encrypt() so it outputs exact multiple of
6914 blocks during encryption.
6917 *) Various fixes to base64 BIO and non blocking I/O. On write
6918 flushes were not handled properly if the BIO retried. On read
6919 data was not being buffered properly and had various logic bugs.
6920 This also affects blocking I/O when the data being decoded is a
6924 *) Various S/MIME bugfixes and compatibility changes:
6925 output correct application/pkcs7 MIME type if
6926 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
6927 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
6928 of files as .eml work). Correctly handle very long lines in MIME
6932 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
6934 *) Countermeasure against the Klima-Pokorny-Rosa extension of
6935 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
6936 a protocol version number mismatch like a decryption error
6937 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
6940 *) Turn on RSA blinding by default in the default implementation
6941 to avoid a timing attack. Applications that don't want it can call
6942 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
6943 They would be ill-advised to do so in most cases.
6944 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
6946 *) Change RSA blinding code so that it works when the PRNG is not
6947 seeded (in this case, the secret RSA exponent is abused as
6948 an unpredictable seed -- if it is not unpredictable, there
6949 is no point in blinding anyway). Make RSA blinding thread-safe
6950 by remembering the creator's thread ID in rsa->blinding and
6951 having all other threads use local one-time blinding factors
6952 (this requires more computation than sharing rsa->blinding, but
6953 avoids excessive locking; and if an RSA object is not shared
6954 between threads, blinding will still be very fast).
6957 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
6958 ENGINE as defaults for all supported algorithms irrespective of
6959 the 'flags' parameter. 'flags' is now honoured, so applications
6960 should make sure they are passing it correctly.
6963 *) Target "mingw" now allows native Windows code to be generated in
6964 the Cygwin environment as well as with the MinGW compiler.
6967 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
6969 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
6970 via timing by performing a MAC computation even if incorrect
6971 block cipher padding has been found. This is a countermeasure
6972 against active attacks where the attacker has to distinguish
6973 between bad padding and a MAC verification error. (CVE-2003-0078)
6975 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
6976 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
6977 Martin Vuagnoux (EPFL, Ilion)]
6979 *) Make the no-err option work as intended. The intention with no-err
6980 is not to have the whole error stack handling routines removed from
6981 libcrypto, it's only intended to remove all the function name and
6982 reason texts, thereby removing some of the footprint that may not
6983 be interesting if those errors aren't displayed anyway.
6985 NOTE: it's still possible for any application or module to have it's
6986 own set of error texts inserted. The routines are there, just not
6987 used by default when no-err is given.
6990 *) Add support for FreeBSD on IA64.
6991 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
6993 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
6994 Kerberos function mit_des_cbc_cksum(). Before this change,
6995 the value returned by DES_cbc_cksum() was like the one from
6996 mit_des_cbc_cksum(), except the bytes were swapped.
6997 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
6999 *) Allow an application to disable the automatic SSL chain building.
7000 Before this a rather primitive chain build was always performed in
7001 ssl3_output_cert_chain(): an application had no way to send the
7002 correct chain if the automatic operation produced an incorrect result.
7004 Now the chain builder is disabled if either:
7006 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
7008 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
7010 The reasoning behind this is that an application would not want the
7011 auto chain building to take place if extra chain certificates are
7012 present and it might also want a means of sending no additional
7013 certificates (for example the chain has two certificates and the
7017 *) Add the possibility to build without the ENGINE framework.
7018 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7020 *) Under Win32 gmtime() can return NULL: check return value in
7021 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
7024 *) DSA routines: under certain error conditions uninitialized BN objects
7025 could be freed. Solution: make sure initialization is performed early
7026 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
7027 Nils Larsch <nla@trustcenter.de> via PR#459)
7030 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
7031 checked on reconnect on the client side, therefore session resumption
7032 could still fail with a "ssl session id is different" error. This
7033 behaviour is masked when SSL_OP_ALL is used due to
7034 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
7035 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7036 followup to PR #377.
7039 *) IA-32 assembler support enhancements: unified ELF targets, support
7040 for SCO/Caldera platforms, fix for Cygwin shared build.
7043 *) Add support for FreeBSD on sparc64. As a consequence, support for
7044 FreeBSD on non-x86 processors is separate from x86 processors on
7045 the config script, much like the NetBSD support.
7046 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
7048 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
7050 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
7053 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
7054 code (06) was taken as the first octet of the session ID and the last
7055 octet was ignored consequently. As a result SSLv2 client side session
7056 caching could not have worked due to the session ID mismatch between
7058 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7062 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
7063 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
7067 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
7068 seems that in spite of existing for more than a year, many application
7069 author have done nothing to provide the necessary callbacks, which
7070 means that this particular engine will not work properly anywhere.
7071 This is a very unfortunate situation which forces us, in the name
7072 of usability, to give the hw_ncipher.c a static lock, which is part
7074 NOTE: This is for the 0.9.7 series ONLY. This hack will never
7075 appear in 0.9.8 or later. We EXPECT application authors to have
7076 dealt properly with this when 0.9.8 is released (unless we actually
7077 make such changes in the libcrypto locking code that changes will
7078 have to be made anyway).
7081 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
7082 octets have been read, EOF or an error occurs. Without this change
7083 some truncated ASN1 structures will not produce an error.
7086 *) Disable Heimdal support, since it hasn't been fully implemented.
7087 Still give the possibility to force the use of Heimdal, but with
7088 warnings and a request that patches get sent to openssl-dev.
7091 *) Add the VC-CE target, introduce the WINCE sysname, and add
7092 INSTALL.WCE and appropriate conditionals to make it build.
7093 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7095 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
7096 cygssl-x.y.z.dll, where x, y and z are the major, minor and
7097 edit numbers of the version.
7098 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7100 *) Introduce safe string copy and catenation functions
7101 (BUF_strlcpy() and BUF_strlcat()).
7102 [Ben Laurie (CHATS) and Richard Levitte]
7104 *) Avoid using fixed-size buffers for one-line DNs.
7105 [Ben Laurie (CHATS)]
7107 *) Add BUF_MEM_grow_clean() to avoid information leakage when
7108 resizing buffers containing secrets, and use where appropriate.
7109 [Ben Laurie (CHATS)]
7111 *) Avoid using fixed size buffers for configuration file location.
7112 [Ben Laurie (CHATS)]
7114 *) Avoid filename truncation for various CA files.
7115 [Ben Laurie (CHATS)]
7117 *) Use sizeof in preference to magic numbers.
7118 [Ben Laurie (CHATS)]
7120 *) Avoid filename truncation in cert requests.
7121 [Ben Laurie (CHATS)]
7123 *) Add assertions to check for (supposedly impossible) buffer
7125 [Ben Laurie (CHATS)]
7127 *) Don't cache truncated DNS entries in the local cache (this could
7128 potentially lead to a spoofing attack).
7129 [Ben Laurie (CHATS)]
7131 *) Fix various buffers to be large enough for hex/decimal
7132 representations in a platform independent manner.
7133 [Ben Laurie (CHATS)]
7135 *) Add CRYPTO_realloc_clean() to avoid information leakage when
7136 resizing buffers containing secrets, and use where appropriate.
7137 [Ben Laurie (CHATS)]
7139 *) Add BIO_indent() to avoid much slightly worrying code to do
7141 [Ben Laurie (CHATS)]
7143 *) Convert sprintf()/BIO_puts() to BIO_printf().
7144 [Ben Laurie (CHATS)]
7146 *) buffer_gets() could terminate with the buffer only half
7148 [Ben Laurie (CHATS)]
7150 *) Add assertions to prevent user-supplied crypto functions from
7151 overflowing internal buffers by having large block sizes, etc.
7152 [Ben Laurie (CHATS)]
7154 *) New OPENSSL_assert() macro (similar to assert(), but enabled
7156 [Ben Laurie (CHATS)]
7158 *) Eliminate unused copy of key in RC4.
7159 [Ben Laurie (CHATS)]
7161 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
7162 [Ben Laurie (CHATS)]
7164 *) Fix off-by-one error in EGD path.
7165 [Ben Laurie (CHATS)]
7167 *) If RANDFILE path is too long, ignore instead of truncating.
7168 [Ben Laurie (CHATS)]
7170 *) Eliminate unused and incorrectly sized X.509 structure
7172 [Ben Laurie (CHATS)]
7174 *) Eliminate unused and dangerous function knumber().
7175 [Ben Laurie (CHATS)]
7177 *) Eliminate unused and dangerous structure, KSSL_ERR.
7178 [Ben Laurie (CHATS)]
7180 *) Protect against overlong session ID context length in an encoded
7181 session object. Since these are local, this does not appear to be
7183 [Ben Laurie (CHATS)]
7185 *) Change from security patch (see 0.9.6e below) that did not affect
7186 the 0.9.6 release series:
7188 Remote buffer overflow in SSL3 protocol - an attacker could
7189 supply an oversized master key in Kerberos-enabled versions.
7191 [Ben Laurie (CHATS)]
7193 *) Change the SSL kerb5 codes to match RFC 2712.
7196 *) Make -nameopt work fully for req and add -reqopt switch.
7197 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
7199 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
7200 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
7202 *) Make sure tests can be performed even if the corresponding algorithms
7203 have been removed entirely. This was also the last step to make
7204 OpenSSL compilable with DJGPP under all reasonable conditions.
7205 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
7207 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
7208 to allow version independent disabling of normally unselected ciphers,
7209 which may be activated as a side-effect of selecting a single cipher.
7211 (E.g., cipher list string "RSA" enables ciphersuites that are left
7212 out of "ALL" because they do not provide symmetric encryption.
7213 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
7214 [Lutz Jaenicke, Bodo Moeller]
7216 *) Add appropriate support for separate platform-dependent build
7217 directories. The recommended way to make a platform-dependent
7218 build directory is the following (tested on Linux), maybe with
7221 # Place yourself outside of the OpenSSL source tree. In
7222 # this example, the environment variable OPENSSL_SOURCE
7223 # is assumed to contain the absolute OpenSSL source directory.
7224 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
7225 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
7226 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
7227 mkdir -p `dirname $F`
7228 ln -s $OPENSSL_SOURCE/$F $F
7231 To be absolutely sure not to disturb the source tree, a "make clean"
7232 is a good thing. If it isn't successful, don't worry about it,
7233 it probably means the source directory is very clean.
7236 *) Make sure any ENGINE control commands make local copies of string
7237 pointers passed to them whenever necessary. Otherwise it is possible
7238 the caller may have overwritten (or deallocated) the original string
7239 data when a later ENGINE operation tries to use the stored values.
7240 [Götz Babin-Ebell <babinebell@trustcenter.de>]
7242 *) Improve diagnostics in file reading and command-line digests.
7243 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
7245 *) Add AES modes CFB and OFB to the object database. Correct an
7246 error in AES-CFB decryption.
7249 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
7250 allows existing EVP_CIPHER_CTX structures to be reused after
7251 calling EVP_*Final(). This behaviour is used by encryption
7252 BIOs and some applications. This has the side effect that
7253 applications must explicitly clean up cipher contexts with
7254 EVP_CIPHER_CTX_cleanup() or they will leak memory.
7257 *) Check the values of dna and dnb in bn_mul_recursive before calling
7258 bn_mul_comba (a non zero value means the a or b arrays do not contain
7259 n2 elements) and fallback to bn_mul_normal if either is not zero.
7262 *) Fix escaping of non-ASCII characters when using the -subj option
7263 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
7266 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
7267 form for "surname", serialNumber has no short form.
7268 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
7269 therefore remove "mail" short name for "internet 7".
7270 The OID for unique identifiers in X509 certificates is
7271 x500UniqueIdentifier, not uniqueIdentifier.
7272 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
7275 *) Add an "init" command to the ENGINE config module and auto initialize
7276 ENGINEs. Without any "init" command the ENGINE will be initialized
7277 after all ctrl commands have been executed on it. If init=1 the
7278 ENGINE is initialized at that point (ctrls before that point are run
7279 on the uninitialized ENGINE and after on the initialized one). If
7280 init=0 then the ENGINE will not be initialized at all.
7283 *) Fix the 'app_verify_callback' interface so that the user-defined
7284 argument is actually passed to the callback: In the
7285 SSL_CTX_set_cert_verify_callback() prototype, the callback
7286 declaration has been changed from
7289 int (*cb)(X509_STORE_CTX *,void *);
7290 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
7291 i=s->ctx->app_verify_callback(&ctx)
7292 has been changed into
7293 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
7295 To update applications using SSL_CTX_set_cert_verify_callback(),
7296 a dummy argument can be added to their callback functions.
7297 [D. K. Smetters <smetters@parc.xerox.com>]
7299 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
7300 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
7302 *) Add and OPENSSL_LOAD_CONF define which will cause
7303 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
7304 This allows older applications to transparently support certain
7305 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
7306 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
7307 load the config file and OPENSSL_add_all_algorithms_conf() which will
7308 always load it have also been added.
7311 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
7312 Adjust NIDs and EVP layer.
7313 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7315 *) Config modules support in openssl utility.
7317 Most commands now load modules from the config file,
7318 though in a few (such as version) this isn't done
7319 because it couldn't be used for anything.
7321 In the case of ca and req the config file used is
7322 the same as the utility itself: that is the -config
7323 command line option can be used to specify an
7327 *) Move default behaviour from OPENSSL_config(). If appname is NULL
7328 use "openssl_conf" if filename is NULL use default openssl config file.
7331 *) Add an argument to OPENSSL_config() to allow the use of an alternative
7332 config section name. Add a new flag to tolerate a missing config file
7333 and move code to CONF_modules_load_file().
7336 *) Support for crypto accelerator cards from Accelerated Encryption
7337 Processing, www.aep.ie. (Use engine 'aep')
7338 The support was copied from 0.9.6c [engine] and adapted/corrected
7339 to work with the new engine framework.
7340 [AEP Inc. and Richard Levitte]
7342 *) Support for SureWare crypto accelerator cards from Baltimore
7343 Technologies. (Use engine 'sureware')
7344 The support was copied from 0.9.6c [engine] and adapted
7345 to work with the new engine framework.
7348 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
7349 make the newer ENGINE framework commands for the CHIL engine work.
7350 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
7352 *) Make it possible to produce shared libraries on ReliantUNIX.
7353 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
7355 *) Add the configuration target debug-linux-ppro.
7356 Make 'openssl rsa' use the general key loading routines
7357 implemented in apps.c, and make those routines able to
7358 handle the key format FORMAT_NETSCAPE and the variant
7360 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7362 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7363 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7365 *) Add -keyform to rsautl, and document -engine.
7366 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
7368 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
7369 BIO_R_NO_SUCH_FILE error code rather than the generic
7370 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
7373 *) Add new functions
7375 ERR_peek_last_error_line
7376 ERR_peek_last_error_line_data.
7377 These are similar to
7380 ERR_peek_error_line_data,
7381 but report on the latest error recorded rather than the first one
7382 still in the error queue.
7383 [Ben Laurie, Bodo Moeller]
7385 *) default_algorithms option in ENGINE config module. This allows things
7387 default_algorithms = ALL
7388 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
7391 *) Preliminary ENGINE config module.
7394 *) New experimental application configuration code.
7397 *) Change the AES code to follow the same name structure as all other
7398 symmetric ciphers, and behave the same way. Move everything to
7399 the directory crypto/aes, thereby obsoleting crypto/rijndael.
7400 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7402 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
7403 [Ben Laurie and Theo de Raadt]
7405 *) Add option to output public keys in req command.
7406 [Massimiliano Pala madwolf@openca.org]
7408 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
7409 (up to about 10% better than before for P-192 and P-224).
7412 *) New functions/macros
7414 SSL_CTX_set_msg_callback(ctx, cb)
7415 SSL_CTX_set_msg_callback_arg(ctx, arg)
7416 SSL_set_msg_callback(ssl, cb)
7417 SSL_set_msg_callback_arg(ssl, arg)
7419 to request calling a callback function
7421 void cb(int write_p, int version, int content_type,
7422 const void *buf, size_t len, SSL *ssl, void *arg)
7424 whenever a protocol message has been completely received
7425 (write_p == 0) or sent (write_p == 1). Here 'version' is the
7426 protocol version according to which the SSL library interprets
7427 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
7428 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
7429 the content type as defined in the SSL 3.0/TLS 1.0 protocol
7430 specification (change_cipher_spec(20), alert(21), handshake(22)).
7431 'buf' and 'len' point to the actual message, 'ssl' to the
7432 SSL object, and 'arg' is the application-defined value set by
7433 SSL[_CTX]_set_msg_callback_arg().
7435 'openssl s_client' and 'openssl s_server' have new '-msg' options
7436 to enable a callback that displays all protocol messages.
7439 *) Change the shared library support so shared libraries are built as
7440 soon as the corresponding static library is finished, and thereby get
7441 openssl and the test programs linked against the shared library.
7442 This still only happens when the keyword "shard" has been given to
7443 the configuration scripts.
7445 NOTE: shared library support is still an experimental thing, and
7446 backward binary compatibility is still not guaranteed.
7447 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
7449 *) Add support for Subject Information Access extension.
7450 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7452 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
7453 additional bytes when new memory had to be allocated, not just
7454 when reusing an existing buffer.
7457 *) New command line and configuration option 'utf8' for the req command.
7458 This allows field values to be specified as UTF8 strings.
7461 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
7462 runs for the former and machine-readable output for the latter.
7465 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
7466 of the e-mail address in the DN (i.e., it will go into a certificate
7467 extension only). The new configuration file option 'email_in_dn = no'
7468 has the same effect.
7469 [Massimiliano Pala madwolf@openca.org]
7471 *) Change all functions with names starting with des_ to be starting
7472 with DES_ instead. Add wrappers that are compatible with libdes,
7473 but are named _ossl_old_des_*. Finally, add macros that map the
7474 des_* symbols to the corresponding _ossl_old_des_* if libdes
7475 compatibility is desired. If OpenSSL 0.9.6c compatibility is
7476 desired, the des_* symbols will be mapped to DES_*, with one
7479 Since we provide two compatibility mappings, the user needs to
7480 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
7481 compatibility is desired. The default (i.e., when that macro
7482 isn't defined) is OpenSSL 0.9.6c compatibility.
7484 There are also macros that enable and disable the support of old
7485 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
7486 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
7487 are defined, the default will apply: to support the old des routines.
7489 In either case, one must include openssl/des.h to get the correct
7490 definitions. Do not try to just include openssl/des_old.h, that
7493 NOTE: This is a major break of an old API into a new one. Software
7494 authors are encouraged to switch to the DES_ style functions. Some
7495 time in the future, des_old.h and the libdes compatibility functions
7496 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
7497 default), and then completely removed.
7500 *) Test for certificates which contain unsupported critical extensions.
7501 If such a certificate is found during a verify operation it is
7502 rejected by default: this behaviour can be overridden by either
7503 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
7504 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
7505 X509_supported_extension() has also been added which returns 1 if a
7506 particular extension is supported.
7509 *) Modify the behaviour of EVP cipher functions in similar way to digests
7510 to retain compatibility with existing code.
7513 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
7514 compatibility with existing code. In particular the 'ctx' parameter does
7515 not have to be to be initialized before the call to EVP_DigestInit() and
7516 it is tidied up after a call to EVP_DigestFinal(). New function
7517 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
7518 EVP_MD_CTX_copy() changed to not require the destination to be
7519 initialized valid and new function EVP_MD_CTX_copy_ex() added which
7520 requires the destination to be valid.
7522 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
7523 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
7526 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
7527 so that complete 'Handshake' protocol structures are kept in memory
7528 instead of overwriting 'msg_type' and 'length' with 'body' data.
7531 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
7532 [Massimo Santin via Richard Levitte]
7534 *) Major restructuring to the underlying ENGINE code. This includes
7535 reduction of linker bloat, separation of pure "ENGINE" manipulation
7536 (initialisation, etc) from functionality dealing with implementations
7537 of specific crypto interfaces. This change also introduces integrated
7538 support for symmetric ciphers and digest implementations - so ENGINEs
7539 can now accelerate these by providing EVP_CIPHER and EVP_MD
7540 implementations of their own. This is detailed in crypto/engine/README
7541 as it couldn't be adequately described here. However, there are a few
7542 API changes worth noting - some RSA, DSA, DH, and RAND functions that
7543 were changed in the original introduction of ENGINE code have now
7544 reverted back - the hooking from this code to ENGINE is now a good
7545 deal more passive and at run-time, operations deal directly with
7546 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
7547 dereferencing through an ENGINE pointer any more. Also, the ENGINE
7548 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
7549 they were not being used by the framework as there is no concept of a
7550 BIGNUM_METHOD and they could not be generalised to the new
7551 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
7552 ENGINE_cpy() has been removed as it cannot be consistently defined in
7556 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
7559 *) Change mkdef.pl to sort symbols that get the same entry number,
7560 and make sure the automatically generated functions ERR_load_*
7561 become part of libeay.num as well.
7564 *) New function SSL_renegotiate_pending(). This returns true once
7565 renegotiation has been requested (either SSL_renegotiate() call
7566 or HelloRequest/ClientHello received from the peer) and becomes
7567 false once a handshake has been completed.
7568 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
7569 sends a HelloRequest, but does not ensure that a handshake takes
7570 place. SSL_renegotiate_pending() is useful for checking if the
7571 client has followed the request.)
7574 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
7575 By default, clients may request session resumption even during
7576 renegotiation (if session ID contexts permit); with this option,
7577 session resumption is possible only in the first handshake.
7579 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
7580 more bits available for options that should not be part of
7581 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
7584 *) Add some demos for certificate and certificate request creation.
7587 *) Make maximum certificate chain size accepted from the peer application
7588 settable (SSL*_get/set_max_cert_list()), as proposed by
7589 "Douglas E. Engert" <deengert@anl.gov>.
7592 *) Add support for shared libraries for Unixware-7
7593 (Boyd Lynn Gerber <gerberb@zenez.com>).
7596 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
7597 be done prior to destruction. Use this to unload error strings from
7598 ENGINEs that load their own error strings. NB: This adds two new API
7599 functions to "get" and "set" this destroy handler in an ENGINE.
7602 *) Alter all existing ENGINE implementations (except "openssl" and
7603 "openbsd") to dynamically instantiate their own error strings. This
7604 makes them more flexible to be built both as statically-linked ENGINEs
7605 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
7606 Also, add stub code to each that makes building them as self-contained
7607 shared-libraries easier (see README.ENGINE).
7610 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
7611 implementations into applications that are completely implemented in
7612 self-contained shared-libraries. The "dynamic" ENGINE exposes control
7613 commands that can be used to configure what shared-library to load and
7614 to control aspects of the way it is handled. Also, made an update to
7615 the README.ENGINE file that brings its information up-to-date and
7616 provides some information and instructions on the "dynamic" ENGINE
7617 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
7620 *) Make it possible to unload ranges of ERR strings with a new
7621 "ERR_unload_strings" function.
7624 *) Add a copy() function to EVP_MD.
7627 *) Make EVP_MD routines take a context pointer instead of just the
7628 md_data void pointer.
7631 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
7632 that the digest can only process a single chunk of data
7633 (typically because it is provided by a piece of
7634 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
7635 is only going to provide a single chunk of data, and hence the
7636 framework needn't accumulate the data for oneshot drivers.
7639 *) As with "ERR", make it possible to replace the underlying "ex_data"
7640 functions. This change also alters the storage and management of global
7641 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
7642 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
7643 index counters. The API functions that use this state have been changed
7644 to take a "class_index" rather than pointers to the class's local STACK
7645 and counter, and there is now an API function to dynamically create new
7646 classes. This centralisation allows us to (a) plug a lot of the
7647 thread-safety problems that existed, and (b) makes it possible to clean
7648 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
7649 such data would previously have always leaked in application code and
7650 workarounds were in place to make the memory debugging turn a blind eye
7651 to it. Application code that doesn't use this new function will still
7652 leak as before, but their memory debugging output will announce it now
7653 rather than letting it slide.
7655 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
7656 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
7657 has a return value to indicate success or failure.
7660 *) Make it possible to replace the underlying "ERR" functions such that the
7661 global state (2 LHASH tables and 2 locks) is only used by the "default"
7662 implementation. This change also adds two functions to "get" and "set"
7663 the implementation prior to it being automatically set the first time
7664 any other ERR function takes place. Ie. an application can call "get",
7665 pass the return value to a module it has just loaded, and that module
7666 can call its own "set" function using that value. This means the
7667 module's "ERR" operations will use (and modify) the error state in the
7668 application and not in its own statically linked copy of OpenSSL code.
7671 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
7672 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
7673 the operation, and provides a more encapsulated way for external code
7674 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
7675 to use these functions rather than manually incrementing the counts.
7677 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
7680 *) Add EVP test program.
7683 *) Add symmetric cipher support to ENGINE. Expect the API to change!
7686 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
7687 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
7688 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
7689 These allow a CRL to be built without having to access X509_CRL fields
7690 directly. Modify 'ca' application to use new functions.
7693 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
7694 bug workarounds. Rollback attack detection is a security feature.
7695 The problem will only arise on OpenSSL servers when TLSv1 is not
7696 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
7697 Software authors not wanting to support TLSv1 will have special reasons
7698 for their choice and can explicitly enable this option.
7699 [Bodo Moeller, Lutz Jaenicke]
7701 *) Rationalise EVP so it can be extended: don't include a union of
7702 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
7703 (similar to those existing for EVP_CIPHER_CTX).
7708 EVP_MD_CTX_init(&md); /* new function call */
7709 EVP_DigestInit(&md, EVP_sha1());
7710 EVP_DigestUpdate(&md, in, len);
7711 EVP_DigestFinal(&md, out, NULL);
7712 EVP_MD_CTX_cleanup(&md); /* new function call */
7716 *) Make DES key schedule conform to the usual scheme, as well as
7717 correcting its structure. This means that calls to DES functions
7718 now have to pass a pointer to a des_key_schedule instead of a
7719 plain des_key_schedule (which was actually always a pointer
7722 des_key_schedule ks;
7724 des_set_key_checked(..., &ks);
7725 des_ncbc_encrypt(..., &ks, ...);
7727 (Note that a later change renames 'des_...' into 'DES_...'.)
7730 *) Initial reduction of linker bloat: the use of some functions, such as
7731 PEM causes large amounts of unused functions to be linked in due to
7732 poor organisation. For example pem_all.c contains every PEM function
7733 which has a knock on effect of linking in large amounts of (unused)
7734 ASN1 code. Grouping together similar functions and splitting unrelated
7735 functions prevents this.
7738 *) Cleanup of EVP macros.
7741 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
7742 correct _ecb suffix.
7745 *) Add initial OCSP responder support to ocsp application. The
7746 revocation information is handled using the text based index
7747 use by the ca application. The responder can either handle
7748 requests generated internally, supplied in files (for example
7749 via a CGI script) or using an internal minimal server.
7752 *) Add configuration choices to get zlib compression for TLS.
7755 *) Changes to Kerberos SSL for RFC 2712 compliance:
7756 1. Implemented real KerberosWrapper, instead of just using
7757 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
7758 2. Implemented optional authenticator field of KerberosWrapper.
7760 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
7761 and authenticator structs; see crypto/krb5/.
7763 Generalized Kerberos calls to support multiple Kerberos libraries.
7764 [Vern Staats <staatsvr@asc.hpc.mil>,
7765 Jeffrey Altman <jaltman@columbia.edu>
7766 via Richard Levitte]
7768 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
7769 already does with RSA. testdsa.h now has 'priv_key/pub_key'
7770 values for each of the key sizes rather than having just
7771 parameters (and 'speed' generating keys each time).
7774 *) Speed up EVP routines.
7777 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
7778 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
7779 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
7780 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
7782 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
7783 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
7784 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
7787 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
7789 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
7792 *) Added the OS2-EMX target.
7793 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
7795 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
7796 to support NCONF routines in extension code. New function CONF_set_nconf()
7797 to allow functions which take an NCONF to also handle the old LHASH
7798 structure: this means that the old CONF compatible routines can be
7799 retained (in particular wrt extensions) without having to duplicate the
7800 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
7803 *) Enhance the general user interface with mechanisms for inner control
7804 and with possibilities to have yes/no kind of prompts.
7807 *) Change all calls to low level digest routines in the library and
7808 applications to use EVP. Add missing calls to HMAC_cleanup() and
7809 don't assume HMAC_CTX can be copied using memcpy().
7810 [Verdon Walker <VWalker@novell.com>, Steve Henson]
7812 *) Add the possibility to control engines through control names but with
7813 arbitrary arguments instead of just a string.
7814 Change the key loaders to take a UI_METHOD instead of a callback
7815 function pointer. NOTE: this breaks binary compatibility with earlier
7816 versions of OpenSSL [engine].
7817 Adapt the nCipher code for these new conditions and add a card insertion
7821 *) Enhance the general user interface with mechanisms to better support
7822 dialog box interfaces, application-defined prompts, the possibility
7823 to use defaults (for example default passwords from somewhere else)
7824 and interrupts/cancellations.
7827 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
7828 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
7831 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
7832 tidy up some unnecessarily weird code in 'sk_new()').
7833 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
7835 *) Change the key loading routines for ENGINEs to use the same kind
7836 callback (pem_password_cb) as all other routines that need this
7840 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
7841 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
7842 than this minimum value is recommended.
7845 *) New random seeder for OpenVMS, using the system process statistics
7846 that are easily reachable.
7849 *) Windows apparently can't transparently handle global
7850 variables defined in DLLs. Initialisations such as:
7852 const ASN1_ITEM *it = &ASN1_INTEGER_it;
7854 won't compile. This is used by the any applications that need to
7855 declare their own ASN1 modules. This was fixed by adding the option
7856 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
7857 needed for static libraries under Win32.
7860 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
7861 setting of purpose and trust fields. New X509_STORE trust and
7862 purpose functions and tidy up setting in other SSL functions.
7865 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
7866 structure. These are inherited by X509_STORE_CTX when it is
7867 initialised. This allows various defaults to be set in the
7868 X509_STORE structure (such as flags for CRL checking and custom
7869 purpose or trust settings) for functions which only use X509_STORE_CTX
7870 internally such as S/MIME.
7872 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
7873 trust settings if they are not set in X509_STORE. This allows X509_STORE
7874 purposes and trust (in S/MIME for example) to override any set by default.
7876 Add command line options for CRL checking to smime, s_client and s_server
7880 *) Initial CRL based revocation checking. If the CRL checking flag(s)
7881 are set then the CRL is looked up in the X509_STORE structure and
7882 its validity and signature checked, then if the certificate is found
7883 in the CRL the verify fails with a revoked error.
7885 Various new CRL related callbacks added to X509_STORE_CTX structure.
7887 Command line options added to 'verify' application to support this.
7889 This needs some additional work, such as being able to handle multiple
7890 CRLs with different times, extension based lookup (rather than just
7891 by subject name) and ultimately more complete V2 CRL extension
7895 *) Add a general user interface API (crypto/ui/). This is designed
7896 to replace things like des_read_password and friends (backward
7897 compatibility functions using this new API are provided).
7898 The purpose is to remove prompting functions from the DES code
7899 section as well as provide for prompting through dialog boxes in
7900 a window system and the like.
7903 *) Add "ex_data" support to ENGINE so implementations can add state at a
7904 per-structure level rather than having to store it globally.
7907 *) Make it possible for ENGINE structures to be copied when retrieved by
7908 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
7909 This causes the "original" ENGINE structure to act like a template,
7910 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
7911 operational state can be localised to each ENGINE structure, despite the
7912 fact they all share the same "methods". New ENGINE structures returned in
7913 this case have no functional references and the return value is the single
7914 structural reference. This matches the single structural reference returned
7915 by ENGINE_by_id() normally, when it is incremented on the pre-existing
7919 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
7920 needs to match any other type at all we need to manually clear the
7924 *) Changes to the "openssl engine" utility to include;
7925 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
7926 about an ENGINE's available control commands.
7927 - executing control commands from command line arguments using the
7928 '-pre' and '-post' switches. '-post' is only used if '-t' is
7929 specified and the ENGINE is successfully initialised. The syntax for
7930 the individual commands are colon-separated, for example;
7931 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
7934 *) New dynamic control command support for ENGINEs. ENGINEs can now
7935 declare their own commands (numbers), names (strings), descriptions,
7936 and input types for run-time discovery by calling applications. A
7937 subset of these commands are implicitly classed as "executable"
7938 depending on their input type, and only these can be invoked through
7939 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
7940 can be based on user input, config files, etc). The distinction is
7941 that "executable" commands cannot return anything other than a boolean
7942 result and can only support numeric or string input, whereas some
7943 discoverable commands may only be for direct use through
7944 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
7945 pointers, or other custom uses. The "executable" commands are to
7946 support parameterisations of ENGINE behaviour that can be
7947 unambiguously defined by ENGINEs and used consistently across any
7948 OpenSSL-based application. Commands have been added to all the
7949 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
7950 control over shared-library paths without source code alterations.
7953 *) Changed all ENGINE implementations to dynamically allocate their
7954 ENGINEs rather than declaring them statically. Apart from this being
7955 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
7956 this also allows the implementations to compile without using the
7957 internal engine_int.h header.
7960 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
7961 'const' value. Any code that should be able to modify a RAND_METHOD
7962 should already have non-const pointers to it (ie. they should only
7963 modify their own ones).
7966 *) Made a variety of little tweaks to the ENGINE code.
7967 - "atalla" and "ubsec" string definitions were moved from header files
7968 to C code. "nuron" string definitions were placed in variables
7969 rather than hard-coded - allowing parameterisation of these values
7970 later on via ctrl() commands.
7971 - Removed unused "#if 0"'d code.
7972 - Fixed engine list iteration code so it uses ENGINE_free() to release
7973 structural references.
7974 - Constified the RAND_METHOD element of ENGINE structures.
7975 - Constified various get/set functions as appropriate and added
7976 missing functions (including a catch-all ENGINE_cpy that duplicates
7977 all ENGINE values onto a new ENGINE except reference counts/state).
7978 - Removed NULL parameter checks in get/set functions. Setting a method
7979 or function to NULL is a way of cancelling out a previously set
7980 value. Passing a NULL ENGINE parameter is just plain stupid anyway
7981 and doesn't justify the extra error symbols and code.
7982 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
7983 flags from engine_int.h to engine.h.
7984 - Changed prototypes for ENGINE handler functions (init(), finish(),
7985 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
7988 *) Implement binary inversion algorithm for BN_mod_inverse in addition
7989 to the algorithm using long division. The binary algorithm can be
7990 used only if the modulus is odd. On 32-bit systems, it is faster
7991 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
7992 roughly 5-15% for 256-bit moduli), so we use it only for moduli
7993 up to 450 bits. In 64-bit environments, the binary algorithm
7994 appears to be advantageous for much longer moduli; here we use it
7995 for moduli up to 2048 bits.
7998 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
7999 could not support the combine flag in choice fields.
8002 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
8003 extensions from a certificate request to the certificate.
8006 *) Allow multiple 'certopt' and 'nameopt' options to be separated
8007 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
8008 file: this allows the display of the certificate about to be
8009 signed to be customised, to allow certain fields to be included
8010 or excluded and extension details. The old system didn't display
8011 multicharacter strings properly, omitted fields not in the policy
8012 and couldn't display additional details such as extensions.
8015 *) Function EC_POINTs_mul for multiple scalar multiplication
8016 of an arbitrary number of elliptic curve points
8017 \sum scalars[i]*points[i],
8018 optionally including the generator defined for the EC_GROUP:
8019 scalar*generator + \sum scalars[i]*points[i].
8021 EC_POINT_mul is a simple wrapper function for the typical case
8022 that the point list has just one item (besides the optional
8026 *) First EC_METHODs for curves over GF(p):
8028 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
8029 operations and provides various method functions that can also
8030 operate with faster implementations of modular arithmetic.
8032 EC_GFp_mont_method() reuses most functions that are part of
8033 EC_GFp_simple_method, but uses Montgomery arithmetic.
8035 [Bodo Moeller; point addition and point doubling
8036 implementation directly derived from source code provided by
8037 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
8039 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
8040 crypto/ec/ec_lib.c):
8042 Curves are EC_GROUP objects (with an optional group generator)
8043 based on EC_METHODs that are built into the library.
8045 Points are EC_POINT objects based on EC_GROUP objects.
8047 Most of the framework would be able to handle curves over arbitrary
8048 finite fields, but as there are no obvious types for fields other
8049 than GF(p), some functions are limited to that for now.
8052 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
8053 that the file contains a complete HTTP response.
8056 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
8057 change the def and num file printf format specifier from "%-40sXXX"
8058 to "%-39s XXX". The latter will always guarantee a space after the
8059 field while the former will cause them to run together if the field
8060 is 40 of more characters long.
8063 *) Constify the cipher and digest 'method' functions and structures
8064 and modify related functions to take constant EVP_MD and EVP_CIPHER
8068 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
8069 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
8072 *) Modify EVP_Digest*() routines so they now return values. Although the
8073 internal software routines can never fail additional hardware versions
8077 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
8079 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
8080 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
8083 ERR_R_NESTED_ASN1_ERROR
8085 ERR_R_MISSING_ASN1_EOS
8086 were 4 .. 9, conflicting with
8087 ERR_LIB_RSA (= ERR_R_RSA_LIB)
8089 ERR_LIB_PEM (= ERR_R_PEM_LIB).
8090 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
8092 Add new error code 'ERR_R_INTERNAL_ERROR'.
8095 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
8099 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
8100 sets the subject name for a new request or supersedes the
8101 subject name in a given request. Formats that can be parsed are
8102 'CN=Some Name, OU=myOU, C=IT'
8104 'CN=Some Name/OU=myOU/C=IT'.
8106 Add options '-batch' and '-verbose' to 'openssl req'.
8107 [Massimiliano Pala <madwolf@hackmasters.net>]
8109 *) Introduce the possibility to access global variables through
8110 functions on platform were that's the best way to handle exporting
8111 global variables in shared libraries. To enable this functionality,
8112 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
8113 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
8114 is normally done by Configure or something similar).
8116 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
8117 in the source file (foo.c) like this:
8119 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
8120 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
8122 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
8123 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
8125 OPENSSL_DECLARE_GLOBAL(int,foo);
8126 #define foo OPENSSL_GLOBAL_REF(foo)
8127 OPENSSL_DECLARE_GLOBAL(double,bar);
8128 #define bar OPENSSL_GLOBAL_REF(bar)
8130 The #defines are very important, and therefore so is including the
8131 header file everywhere where the defined globals are used.
8133 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
8134 of ASN.1 items, but that structure is a bit different.
8136 The largest change is in util/mkdef.pl which has been enhanced with
8137 better and easier to understand logic to choose which symbols should
8138 go into the Windows .def files as well as a number of fixes and code
8139 cleanup (among others, algorithm keywords are now sorted
8140 lexicographically to avoid constant rewrites).
8143 *) In BN_div() keep a copy of the sign of 'num' before writing the
8144 result to 'rm' because if rm==num the value will be overwritten
8145 and produce the wrong result if 'num' is negative: this caused
8146 problems with BN_mod() and BN_nnmod().
8149 *) Function OCSP_request_verify(). This checks the signature on an
8150 OCSP request and verifies the signer certificate. The signer
8151 certificate is just checked for a generic purpose and OCSP request
8155 *) Add OCSP_check_validity() function to check the validity of OCSP
8156 responses. OCSP responses are prepared in real time and may only
8157 be a few seconds old. Simply checking that the current time lies
8158 between thisUpdate and nextUpdate max reject otherwise valid responses
8159 caused by either OCSP responder or client clock inaccuracy. Instead
8160 we allow thisUpdate and nextUpdate to fall within a certain period of
8161 the current time. The age of the response can also optionally be
8162 checked. Two new options -validity_period and -status_age added to
8166 *) If signature or public key algorithm is unrecognized print out its
8167 OID rather that just UNKNOWN.
8170 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
8171 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
8172 ID to be generated from the issuer certificate alone which can then be
8173 passed to OCSP_id_issuer_cmp().
8176 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
8177 ASN1 modules to export functions returning ASN1_ITEM pointers
8178 instead of the ASN1_ITEM structures themselves. This adds several
8179 new macros which allow the underlying ASN1 function/structure to
8180 be accessed transparently. As a result code should not use ASN1_ITEM
8181 references directly (such as &X509_it) but instead use the relevant
8182 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
8183 use of the new ASN1 code on platforms where exporting structures
8184 is problematical (for example in shared libraries) but exporting
8185 functions returning pointers to structures is not.
8188 *) Add support for overriding the generation of SSL/TLS session IDs.
8189 These callbacks can be registered either in an SSL_CTX or per SSL.
8190 The purpose of this is to allow applications to control, if they wish,
8191 the arbitrary values chosen for use as session IDs, particularly as it
8192 can be useful for session caching in multiple-server environments. A
8193 command-line switch for testing this (and any client code that wishes
8194 to use such a feature) has been added to "s_server".
8195 [Geoff Thorpe, Lutz Jaenicke]
8197 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
8198 of the form '#if defined(...) || defined(...) || ...' and
8199 '#if !defined(...) && !defined(...) && ...'. This also avoids
8200 the growing number of special cases it was previously handling.
8203 *) Make all configuration macros available for application by making
8204 sure they are available in opensslconf.h, by giving them names starting
8205 with "OPENSSL_" to avoid conflicts with other packages and by making
8206 sure e_os2.h will cover all platform-specific cases together with
8208 Additionally, it is now possible to define configuration/platform-
8209 specific names (called "system identities"). In the C code, these
8210 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
8211 macro with the name beginning with "OPENSSL_SYS_", which is determined
8212 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
8216 *) New option -set_serial to 'req' and 'x509' this allows the serial
8217 number to use to be specified on the command line. Previously self
8218 signed certificates were hard coded with serial number 0 and the
8219 CA options of 'x509' had to use a serial number in a file which was
8223 *) New options to 'ca' utility to support V2 CRL entry extensions.
8224 Currently CRL reason, invalidity date and hold instruction are
8225 supported. Add new CRL extensions to V3 code and some new objects.
8228 *) New function EVP_CIPHER_CTX_set_padding() this is used to
8229 disable standard block padding (aka PKCS#5 padding) in the EVP
8230 API, which was previously mandatory. This means that the data is
8231 not padded in any way and so the total length much be a multiple
8232 of the block size, otherwise an error occurs.
8235 *) Initial (incomplete) OCSP SSL support.
8238 *) New function OCSP_parse_url(). This splits up a URL into its host,
8239 port and path components: primarily to parse OCSP URLs. New -url
8240 option to ocsp utility.
8243 *) New nonce behavior. The return value of OCSP_check_nonce() now
8244 reflects the various checks performed. Applications can decide
8245 whether to tolerate certain situations such as an absent nonce
8246 in a response when one was present in a request: the ocsp application
8247 just prints out a warning. New function OCSP_add1_basic_nonce()
8248 this is to allow responders to include a nonce in a response even if
8249 the request is nonce-less.
8252 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
8253 skipped when using openssl x509 multiple times on a single input file,
8254 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
8257 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
8258 set string type: to handle setting ASN1_TIME structures. Fix ca
8259 utility to correctly initialize revocation date of CRLs.
8262 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
8263 the clients preferred ciphersuites and rather use its own preferences.
8264 Should help to work around M$ SGC (Server Gated Cryptography) bug in
8265 Internet Explorer by ensuring unchanged hash method during stepup.
8266 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
8269 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
8270 to aes and add a new 'exist' option to print out symbols that don't
8274 *) Additional options to ocsp utility to allow flags to be set and
8275 additional certificates supplied.
8278 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
8279 OCSP client a number of certificate to only verify the response
8283 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
8284 handle the new API. Currently only ECB, CBC modes supported. Add new
8287 Add TLS AES ciphersuites as described in RFC3268, "Advanced
8288 Encryption Standard (AES) Ciphersuites for Transport Layer
8289 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
8290 not enabled by default and were not part of the "ALL" ciphersuite
8291 alias because they were not yet official; they could be
8292 explicitly requested by specifying the "AESdraft" ciphersuite
8293 group alias. In the final release of OpenSSL 0.9.7, the group
8294 alias is called "AES" and is part of "ALL".)
8295 [Ben Laurie, Steve Henson, Bodo Moeller]
8297 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
8298 request to response.
8301 *) Functions for OCSP responders. OCSP_request_onereq_count(),
8302 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
8303 extract information from a certificate request. OCSP_response_create()
8304 creates a response and optionally adds a basic response structure.
8305 OCSP_basic_add1_status() adds a complete single response to a basic
8306 response and returns the OCSP_SINGLERESP structure just added (to allow
8307 extensions to be included for example). OCSP_basic_add1_cert() adds a
8308 certificate to a basic response and OCSP_basic_sign() signs a basic
8309 response with various flags. New helper functions ASN1_TIME_check()
8310 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
8311 (converts ASN1_TIME to GeneralizedTime).
8314 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
8315 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
8316 structure from a certificate. X509_pubkey_digest() digests the public_key
8317 contents: this is used in various key identifiers.
8320 *) Make sk_sort() tolerate a NULL argument.
8321 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
8323 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
8324 passed by the function are trusted implicitly. If any of them signed the
8325 response then it is assumed to be valid and is not verified.
8328 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
8329 to data. This was previously part of the PKCS7 ASN1 code. This
8330 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
8331 [Steve Henson, reported by Kenneth R. Robinette
8332 <support@securenetterm.com>]
8334 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
8335 routines: without these tracing memory leaks is very painful.
8336 Fix leaks in PKCS12 and PKCS7 routines.
8339 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
8340 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
8341 effectively meant GeneralizedTime would never be used. Now it
8342 is initialised to -1 but X509_time_adj() now has to check the value
8343 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
8344 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
8345 [Steve Henson, reported by Kenneth R. Robinette
8346 <support@securenetterm.com>]
8348 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
8349 result in a zero length in the ASN1_INTEGER structure which was
8350 not consistent with the structure when d2i_ASN1_INTEGER() was used
8351 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
8352 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
8353 where it did not print out a minus for negative ASN1_INTEGER.
8356 *) Add summary printout to ocsp utility. The various functions which
8357 convert status values to strings have been renamed to:
8358 OCSP_response_status_str(), OCSP_cert_status_str() and
8359 OCSP_crl_reason_str() and are no longer static. New options
8360 to verify nonce values and to disable verification. OCSP response
8361 printout format cleaned up.
8364 *) Add additional OCSP certificate checks. These are those specified
8365 in RFC2560. This consists of two separate checks: the CA of the
8366 certificate being checked must either be the OCSP signer certificate
8367 or the issuer of the OCSP signer certificate. In the latter case the
8368 OCSP signer certificate must contain the OCSP signing extended key
8369 usage. This check is performed by attempting to match the OCSP
8370 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
8371 in the OCSP_CERTID structures of the response.
8374 *) Initial OCSP certificate verification added to OCSP_basic_verify()
8375 and related routines. This uses the standard OpenSSL certificate
8376 verify routines to perform initial checks (just CA validity) and
8377 to obtain the certificate chain. Then additional checks will be
8378 performed on the chain. Currently the root CA is checked to see
8379 if it is explicitly trusted for OCSP signing. This is used to set
8380 a root CA as a global signing root: that is any certificate that
8381 chains to that CA is an acceptable OCSP signing certificate.
8384 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
8385 extensions from a separate configuration file.
8386 As when reading extensions from the main configuration file,
8387 the '-extensions ...' option may be used for specifying the
8389 [Massimiliano Pala <madwolf@comune.modena.it>]
8391 *) New OCSP utility. Allows OCSP requests to be generated or
8392 read. The request can be sent to a responder and the output
8393 parsed, outputed or printed in text form. Not complete yet:
8394 still needs to check the OCSP response validity.
8397 *) New subcommands for 'openssl ca':
8398 'openssl ca -status <serial>' prints the status of the cert with
8399 the given serial number (according to the index file).
8400 'openssl ca -updatedb' updates the expiry status of certificates
8402 [Massimiliano Pala <madwolf@comune.modena.it>]
8404 *) New '-newreq-nodes' command option to CA.pl. This is like
8405 '-newreq', but calls 'openssl req' with the '-nodes' option
8406 so that the resulting key is not encrypted.
8407 [Damien Miller <djm@mindrot.org>]
8409 *) New configuration for the GNU Hurd.
8410 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
8412 *) Initial code to implement OCSP basic response verify. This
8413 is currently incomplete. Currently just finds the signer's
8414 certificate and verifies the signature on the response.
8417 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
8418 value of OPENSSLDIR. This is available via the new '-d' option
8419 to 'openssl version', and is also included in 'openssl version -a'.
8422 *) Allowing defining memory allocation callbacks that will be given
8423 file name and line number information in additional arguments
8424 (a const char* and an int). The basic functionality remains, as
8425 well as the original possibility to just replace malloc(),
8426 realloc() and free() by functions that do not know about these
8427 additional arguments. To register and find out the current
8428 settings for extended allocation functions, the following
8429 functions are provided:
8431 CRYPTO_set_mem_ex_functions
8432 CRYPTO_set_locked_mem_ex_functions
8433 CRYPTO_get_mem_ex_functions
8434 CRYPTO_get_locked_mem_ex_functions
8436 These work the same way as CRYPTO_set_mem_functions and friends.
8437 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
8438 extended allocation function is enabled.
8439 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
8440 a conventional allocation function is enabled.
8441 [Richard Levitte, Bodo Moeller]
8443 *) Finish off removing the remaining LHASH function pointer casts.
8444 There should no longer be any prototype-casting required when using
8445 the LHASH abstraction, and any casts that remain are "bugs". See
8446 the callback types and macros at the head of lhash.h for details
8447 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
8450 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
8451 If /dev/[u]random devices are not available or do not return enough
8452 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
8454 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
8455 /etc/entropy will be queried once each in this sequence, querying stops
8456 when enough entropy was collected without querying more sockets.
8459 *) Change the Unix RAND_poll() variant to be able to poll several
8460 random devices, as specified by DEVRANDOM, until a sufficient amount
8461 of data has been collected. We spend at most 10 ms on each file
8462 (select timeout) and read in non-blocking mode. DEVRANDOM now
8463 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
8464 (previously it was just the string "/dev/urandom"), so on typical
8465 platforms the 10 ms delay will never occur.
8466 Also separate out the Unix variant to its own file, rand_unix.c.
8467 For VMS, there's a currently-empty rand_vms.c.
8470 *) Move OCSP client related routines to ocsp_cl.c. These
8471 provide utility functions which an application needing
8472 to issue a request to an OCSP responder and analyse the
8473 response will typically need: as opposed to those which an
8474 OCSP responder itself would need which will be added later.
8476 OCSP_request_sign() signs an OCSP request with an API similar
8477 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
8478 response. OCSP_response_get1_basic() extracts basic response
8479 from response. OCSP_resp_find_status(): finds and extracts status
8480 information from an OCSP_CERTID structure (which will be created
8481 when the request structure is built). These are built from lower
8482 level functions which work on OCSP_SINGLERESP structures but
8483 won't normally be used unless the application wishes to examine
8484 extensions in the OCSP response for example.
8486 Replace nonce routines with a pair of functions.
8487 OCSP_request_add1_nonce() adds a nonce value and optionally
8488 generates a random value. OCSP_check_nonce() checks the
8489 validity of the nonce in an OCSP response.
8492 *) Change function OCSP_request_add() to OCSP_request_add0_id().
8493 This doesn't copy the supplied OCSP_CERTID and avoids the
8494 need to free up the newly created id. Change return type
8495 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
8496 This can then be used to add extensions to the request.
8497 Deleted OCSP_request_new(), since most of its functionality
8498 is now in OCSP_REQUEST_new() (and the case insensitive name
8499 clash) apart from the ability to set the request name which
8500 will be added elsewhere.
8503 *) Update OCSP API. Remove obsolete extensions argument from
8504 various functions. Extensions are now handled using the new
8505 OCSP extension code. New simple OCSP HTTP function which
8506 can be used to send requests and parse the response.
8509 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
8510 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
8511 uses the special reorder version of SET OF to sort the attributes
8512 and reorder them to match the encoded order. This resolves a long
8513 standing problem: a verify on a PKCS7 structure just after signing
8514 it used to fail because the attribute order did not match the
8515 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
8516 it uses the received order. This is necessary to tolerate some broken
8517 software that does not order SET OF. This is handled by encoding
8518 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
8519 to produce the required SET OF.
8522 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
8523 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
8524 files to get correct declarations of the ASN.1 item variables.
8527 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
8528 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
8529 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
8530 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
8531 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
8532 ASN1_ITEM and no wrapper functions.
8535 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
8536 replace the old function pointer based I/O routines. Change most of
8537 the *_d2i_bio() and *_d2i_fp() functions to use these.
8540 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
8541 lines, recognize more "algorithms" that can be deselected, and make
8542 it complain about algorithm deselection that isn't recognised.
8545 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
8546 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
8547 to use new functions. Add NO_ASN1_OLD which can be set to remove
8548 some old style ASN1 functions: this can be used to determine if old
8549 code will still work when these eventually go away.
8552 *) New extension functions for OCSP structures, these follow the
8553 same conventions as certificates and CRLs.
8556 *) New function X509V3_add1_i2d(). This automatically encodes and
8557 adds an extension. Its behaviour can be customised with various
8558 flags to append, replace or delete. Various wrappers added for
8559 certificates and CRLs.
8562 *) Fix to avoid calling the underlying ASN1 print routine when
8563 an extension cannot be parsed. Correct a typo in the
8564 OCSP_SERVICELOC extension. Tidy up print OCSP format.
8567 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
8568 entries for variables.
8571 *) Add functionality to apps/openssl.c for detecting locking
8572 problems: As the program is single-threaded, all we have
8573 to do is register a locking callback using an array for
8574 storing which locks are currently held by the program.
8577 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
8578 SSL_get_ex_data_X509_STORE_idx(), which is used in
8579 ssl_verify_cert_chain() and thus can be called at any time
8580 during TLS/SSL handshakes so that thread-safety is essential.
8581 Unfortunately, the ex_data design is not at all suited
8582 for multi-threaded use, so it probably should be abolished.
8585 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
8586 [Broadcom, tweaked and integrated by Geoff Thorpe]
8588 *) Move common extension printing code to new function
8589 X509V3_print_extensions(). Reorganise OCSP print routines and
8590 implement some needed OCSP ASN1 functions. Add OCSP extensions.
8593 *) New function X509_signature_print() to remove duplication in some
8597 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
8598 set (this was treated exactly the same as SET OF previously). This
8599 is used to reorder the STACK representing the structure to match the
8600 encoding. This will be used to get round a problem where a PKCS7
8601 structure which was signed could not be verified because the STACK
8602 order did not reflect the encoded order.
8605 *) Reimplement the OCSP ASN1 module using the new code.
8608 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
8609 for its ASN1 operations. The old style function pointers still exist
8610 for now but they will eventually go away.
8613 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
8614 completely replaces the old ASN1 functionality with a table driven
8615 encoder and decoder which interprets an ASN1_ITEM structure describing
8616 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
8617 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
8618 has also been converted to the new form.
8621 *) Change BN_mod_exp_recp so that negative moduli are tolerated
8622 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
8623 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
8624 for negative moduli.
8627 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
8628 of not touching the result's sign bit.
8631 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
8635 *) Changed the LHASH code to use prototypes for callbacks, and created
8636 macros to declare and implement thin (optionally static) functions
8637 that provide type-safety and avoid function pointer casting for the
8638 type-specific callbacks.
8641 *) Added Kerberos Cipher Suites to be used with TLS, as written in
8643 [Veers Staats <staatsvr@asc.hpc.mil>,
8644 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
8646 *) Reformat the FAQ so the different questions and answers can be divided
8647 in sections depending on the subject.
8650 *) Have the zlib compression code load ZLIB.DLL dynamically under
8654 *) New function BN_mod_sqrt for computing square roots modulo a prime
8655 (using the probabilistic Tonelli-Shanks algorithm unless
8656 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
8657 be handled deterministically).
8658 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
8660 *) Make BN_mod_inverse faster by explicitly handling small quotients
8661 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
8662 512 bits], about 30% for larger ones [1024 or 2048 bits].)
8665 *) New function BN_kronecker.
8668 *) Fix BN_gcd so that it works on negative inputs; the result is
8669 positive unless both parameters are zero.
8670 Previously something reasonably close to an infinite loop was
8671 possible because numbers could be growing instead of shrinking
8672 in the implementation of Euclid's algorithm.
8675 *) Fix BN_is_word() and BN_is_one() macros to take into account the
8676 sign of the number in question.
8678 Fix BN_is_word(a,w) to work correctly for w == 0.
8680 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
8681 because its test if the absolute value of 'a' equals 'w'.
8682 Note that BN_abs_is_word does *not* handle w == 0 reliably;
8683 it exists mostly for use in the implementations of BN_is_zero(),
8684 BN_is_one(), and BN_is_word().
8687 *) New function BN_swap.
8690 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
8691 the exponentiation functions are more likely to produce reasonable
8692 results on negative inputs.
8695 *) Change BN_mod_mul so that the result is always non-negative.
8696 Previously, it could be negative if one of the factors was negative;
8697 I don't think anyone really wanted that behaviour.
8700 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
8701 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
8702 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
8703 and add new functions:
8712 BN_mod_lshift1_quick
8716 These functions always generate non-negative results.
8718 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
8719 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
8721 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
8722 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
8723 be reduced modulo m.
8724 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
8727 The following entry accidentally appeared in the CHANGES file
8728 distributed with OpenSSL 0.9.7. The modifications described in
8729 it do *not* apply to OpenSSL 0.9.7.
8731 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
8732 was actually never needed) and in BN_mul(). The removal in BN_mul()
8733 required a small change in bn_mul_part_recursive() and the addition
8734 of the functions bn_cmp_part_words(), bn_sub_part_words() and
8735 bn_add_part_words(), which do the same thing as bn_cmp_words(),
8736 bn_sub_words() and bn_add_words() except they take arrays with
8741 *) In 'openssl passwd', verify passwords read from the terminal
8742 unless the '-salt' option is used (which usually means that
8743 verification would just waste user's time since the resulting
8744 hash is going to be compared with some given password hash)
8745 or the new '-noverify' option is used.
8747 This is an incompatible change, but it does not affect
8748 non-interactive use of 'openssl passwd' (passwords on the command
8749 line, '-stdin' option, '-in ...' option) and thus should not
8753 *) Remove all references to RSAref, since there's no more need for it.
8756 *) Make DSO load along a path given through an environment variable
8757 (SHLIB_PATH) with shl_load().
8760 *) Constify the ENGINE code as a result of BIGNUM constification.
8761 Also constify the RSA code and most things related to it. In a
8762 few places, most notable in the depth of the ASN.1 code, ugly
8763 casts back to non-const were required (to be solved at a later
8767 *) Make it so the openssl application has all engines loaded by default.
8770 *) Constify the BIGNUM routines a little more.
8773 *) Add the following functions:
8775 ENGINE_load_cswift()
8777 ENGINE_load_atalla()
8779 ENGINE_load_builtin_engines()
8781 That way, an application can itself choose if external engines that
8782 are built-in in OpenSSL shall ever be used or not. The benefit is
8783 that applications won't have to be linked with libdl or other dso
8784 libraries unless it's really needed.
8786 Changed 'openssl engine' to load all engines on demand.
8787 Changed the engine header files to avoid the duplication of some
8788 declarations (they differed!).
8791 *) 'openssl engine' can now list capabilities.
8794 *) Better error reporting in 'openssl engine'.
8797 *) Never call load_dh_param(NULL) in s_server.
8800 *) Add engine application. It can currently list engines by name and
8801 identity, and test if they are actually available.
8804 *) Improve RPM specification file by forcing symbolic linking and making
8805 sure the installed documentation is also owned by root.root.
8806 [Damien Miller <djm@mindrot.org>]
8808 *) Give the OpenSSL applications more possibilities to make use of
8809 keys (public as well as private) handled by engines.
8812 *) Add OCSP code that comes from CertCo.
8815 *) Add VMS support for the Rijndael code.
8818 *) Added untested support for Nuron crypto accelerator.
8821 *) Add support for external cryptographic devices. This code was
8822 previously distributed separately as the "engine" branch.
8823 [Geoff Thorpe, Richard Levitte]
8825 *) Rework the filename-translation in the DSO code. It is now possible to
8826 have far greater control over how a "name" is turned into a filename
8827 depending on the operating environment and any oddities about the
8828 different shared library filenames on each system.
8831 *) Support threads on FreeBSD-elf in Configure.
8834 *) Fix for SHA1 assembly problem with MASM: it produces
8835 warnings about corrupt line number information when assembling
8836 with debugging information. This is caused by the overlapping
8838 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
8841 NCONF_get_number() has no error checking at all. As a replacement,
8842 NCONF_get_number_e() is defined (_e for "error checking") and is
8843 promoted strongly. The old NCONF_get_number is kept around for
8844 binary backward compatibility.
8845 Make it possible for methods to load from something other than a BIO,
8846 by providing a function pointer that is given a name instead of a BIO.
8847 For example, this could be used to load configuration data from an
8851 *) Fix for non blocking accept BIOs. Added new I/O special reason
8852 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
8853 with non blocking I/O was not possible because no retry code was
8854 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
8858 *) Added the beginnings of Rijndael support.
8861 *) Fix for bug in DirectoryString mask setting. Add support for
8862 X509_NAME_print_ex() in 'req' and X509_print_ex() function
8863 to allow certificate printing to more controllable, additional
8864 'certopt' option to 'x509' to allow new printing options to be
8868 *) Clean old EAY MD5 hack from e_os.h.
8871 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
8873 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
8874 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
8875 [Joe Orton, Steve Henson]
8877 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
8879 *) Fix additional bug revealed by the NISCC test suite:
8881 Stop bug triggering large recursion when presented with
8882 certain ASN.1 tags (CVE-2003-0851)
8885 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
8887 *) Fix various bugs revealed by running the NISCC test suite:
8889 Stop out of bounds reads in the ASN1 code when presented with
8890 invalid tags (CVE-2003-0543 and CVE-2003-0544).
8892 If verify callback ignores invalid public key errors don't try to check
8893 certificate signature with the NULL public key.
8897 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
8898 if the server requested one: as stated in TLS 1.0 and SSL 3.0
8902 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
8903 extra data after the compression methods not only for TLS 1.0
8904 but also for SSL 3.0 (as required by the specification).
8905 [Bodo Moeller; problem pointed out by Matthias Loepfe]
8907 *) Change X509_certificate_type() to mark the key as exported/exportable
8908 when it's 512 *bits* long, not 512 bytes.
8911 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
8913 *) Countermeasure against the Klima-Pokorny-Rosa extension of
8914 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
8915 a protocol version number mismatch like a decryption error
8916 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
8919 *) Turn on RSA blinding by default in the default implementation
8920 to avoid a timing attack. Applications that don't want it can call
8921 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
8922 They would be ill-advised to do so in most cases.
8923 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
8925 *) Change RSA blinding code so that it works when the PRNG is not
8926 seeded (in this case, the secret RSA exponent is abused as
8927 an unpredictable seed -- if it is not unpredictable, there
8928 is no point in blinding anyway). Make RSA blinding thread-safe
8929 by remembering the creator's thread ID in rsa->blinding and
8930 having all other threads use local one-time blinding factors
8931 (this requires more computation than sharing rsa->blinding, but
8932 avoids excessive locking; and if an RSA object is not shared
8933 between threads, blinding will still be very fast).
8936 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
8938 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
8939 via timing by performing a MAC computation even if incorrect
8940 block cipher padding has been found. This is a countermeasure
8941 against active attacks where the attacker has to distinguish
8942 between bad padding and a MAC verification error. (CVE-2003-0078)
8944 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
8945 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
8946 Martin Vuagnoux (EPFL, Ilion)]
8948 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
8950 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
8951 memory from it's contents. This is done with a counter that will
8952 place alternating values in each byte. This can be used to solve
8953 two issues: 1) the removal of calls to memset() by highly optimizing
8954 compilers, and 2) cleansing with other values than 0, since those can
8955 be read through on certain media, for example a swap space on disk.
8958 *) Bugfix: client side session caching did not work with external caching,
8959 because the session->cipher setting was not restored when reloading
8960 from the external cache. This problem was masked, when
8961 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
8962 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
8965 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
8966 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
8967 [Zeev Lieber <zeev-l@yahoo.com>]
8969 *) Undo an undocumented change introduced in 0.9.6e which caused
8970 repeated calls to OpenSSL_add_all_ciphers() and
8971 OpenSSL_add_all_digests() to be ignored, even after calling
8975 *) Change the default configuration reader to deal with last line not
8976 being properly terminated.
8979 *) Change X509_NAME_cmp() so it applies the special rules on handling
8980 DN values that are of type PrintableString, as well as RDNs of type
8981 emailAddress where the value has the type ia5String.
8982 [stefank@valicert.com via Richard Levitte]
8984 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
8985 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
8986 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
8987 the bitwise-OR of the two for use by the majority of applications
8988 wanting this behaviour, and update the docs. The documented
8989 behaviour and actual behaviour were inconsistent and had been
8990 changing anyway, so this is more a bug-fix than a behavioural
8992 [Geoff Thorpe, diagnosed by Nadav Har'El]
8994 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
8995 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
8998 *) Fix initialization code race conditions in
8999 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
9000 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
9001 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
9002 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
9003 ssl2_get_cipher_by_char(),
9004 ssl3_get_cipher_by_char().
9005 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
9007 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
9008 the cached sessions are flushed, as the remove_cb() might use ex_data
9009 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
9010 (see [openssl.org #212]).
9011 [Geoff Thorpe, Lutz Jaenicke]
9013 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
9014 length, instead of the encoding length to d2i_ASN1_OBJECT.
9017 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
9019 *) [In 0.9.6g-engine release:]
9020 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
9021 [Lynn Gazis <lgazis@rainbow.com>]
9023 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
9025 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
9026 and get fix the header length calculation.
9027 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
9028 Alon Kantor <alonk@checkpoint.com> (and others),
9031 *) Use proper error handling instead of 'assertions' in buffer
9032 overflow checks added in 0.9.6e. This prevents DoS (the
9033 assertions could call abort()).
9034 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
9036 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
9038 *) Add various sanity checks to asn1_get_length() to reject
9039 the ASN1 length bytes if they exceed sizeof(long), will appear
9040 negative or the content length exceeds the length of the
9042 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9044 *) Fix cipher selection routines: ciphers without encryption had no flags
9045 for the cipher strength set and where therefore not handled correctly
9046 by the selection routines (PR #130).
9049 *) Fix EVP_dsa_sha macro.
9053 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
9054 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
9055 that was added in OpenSSL 0.9.6d.
9057 As the countermeasure turned out to be incompatible with some
9058 broken SSL implementations, the new option is part of SSL_OP_ALL.
9059 SSL_OP_ALL is usually employed when compatibility with weird SSL
9060 implementations is desired (e.g. '-bugs' option to 's_client' and
9061 's_server'), so the new option is automatically set in many
9065 *) Changes in security patch:
9067 Changes marked "(CHATS)" were sponsored by the Defense Advanced
9068 Research Projects Agency (DARPA) and Air Force Research Laboratory,
9069 Air Force Materiel Command, USAF, under agreement number
9072 *) Add various sanity checks to asn1_get_length() to reject
9073 the ASN1 length bytes if they exceed sizeof(long), will appear
9074 negative or the content length exceeds the length of the
9075 supplied buffer. (CVE-2002-0659)
9076 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9078 *) Assertions for various potential buffer overflows, not known to
9080 [Ben Laurie (CHATS)]
9082 *) Various temporary buffers to hold ASCII versions of integers were
9083 too small for 64 bit platforms. (CVE-2002-0655)
9084 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
9086 *) Remote buffer overflow in SSL3 protocol - an attacker could
9087 supply an oversized session ID to a client. (CVE-2002-0656)
9088 [Ben Laurie (CHATS)]
9090 *) Remote buffer overflow in SSL2 protocol - an attacker could
9091 supply an oversized client master key. (CVE-2002-0656)
9092 [Ben Laurie (CHATS)]
9094 Changes between 0.9.6c and 0.9.6d [9 May 2002]
9096 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
9097 encoded as NULL) with id-dsa-with-sha1.
9098 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
9100 *) Check various X509_...() return values in apps/req.c.
9101 [Nils Larsch <nla@trustcenter.de>]
9103 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
9104 an end-of-file condition would erroneously be flagged, when the CRLF
9105 was just at the end of a processed block. The bug was discovered when
9106 processing data through a buffering memory BIO handing the data to a
9107 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
9108 <ptsekov@syntrex.com> and Nedelcho Stanev.
9111 *) Implement a countermeasure against a vulnerability recently found
9112 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
9113 before application data chunks to avoid the use of known IVs
9114 with data potentially chosen by the attacker.
9117 *) Fix length checks in ssl3_get_client_hello().
9120 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
9121 to prevent ssl3_read_internal() from incorrectly assuming that
9122 ssl3_read_bytes() found application data while handshake
9123 processing was enabled when in fact s->s3->in_read_app_data was
9124 merely automatically cleared during the initial handshake.
9125 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
9127 *) Fix object definitions for Private and Enterprise: they were not
9128 recognized in their shortname (=lowercase) representation. Extend
9129 obj_dat.pl to issue an error when using undefined keywords instead
9130 of silently ignoring the problem (Svenning Sorensen
9131 <sss@sss.dnsalias.net>).
9134 *) Fix DH_generate_parameters() so that it works for 'non-standard'
9135 generators, i.e. generators other than 2 and 5. (Previously, the
9136 code did not properly initialise the 'add' and 'rem' values to
9137 BN_generate_prime().)
9139 In the new general case, we do not insist that 'generator' is
9140 actually a primitive root: This requirement is rather pointless;
9141 a generator of the order-q subgroup is just as good, if not
9145 *) Map new X509 verification errors to alerts. Discovered and submitted by
9146 Tom Wu <tom@arcot.com>.
9149 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
9150 returning non-zero before the data has been completely received
9151 when using non-blocking I/O.
9152 [Bodo Moeller; problem pointed out by John Hughes]
9154 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
9155 [Ben Laurie, Lutz Jaenicke]
9157 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
9158 Yoram Zahavi <YoramZ@gilian.com>).
9161 *) Add information about CygWin 1.3 and on, and preserve proper
9162 configuration for the versions before that.
9163 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
9165 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
9166 check whether we deal with a copy of a session and do not delete from
9167 the cache in this case. Problem reported by "Izhar Shoshani Levi"
9168 <izhar@checkpoint.com>.
9171 *) Do not store session data into the internal session cache, if it
9172 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
9173 flag is set). Proposed by Aslam <aslam@funk.com>.
9176 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
9180 *) [In 0.9.6d-engine release:]
9181 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
9182 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
9184 *) Add the configuration target linux-s390x.
9185 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
9187 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
9188 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
9189 variable as an indication that a ClientHello message has been
9190 received. As the flag value will be lost between multiple
9191 invocations of ssl3_accept when using non-blocking I/O, the
9192 function may not be aware that a handshake has actually taken
9193 place, thus preventing a new session from being added to the
9196 To avoid this problem, we now set s->new_session to 2 instead of
9197 using a local variable.
9198 [Lutz Jaenicke, Bodo Moeller]
9200 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
9201 if the SSL_R_LENGTH_MISMATCH error is detected.
9202 [Geoff Thorpe, Bodo Moeller]
9204 *) New 'shared_ldflag' column in Configure platform table.
9207 *) Fix EVP_CIPHER_mode macro.
9208 ["Dan S. Camper" <dan@bti.net>]
9210 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
9211 type, we must throw them away by setting rr->length to 0.
9212 [D P Chang <dpc@qualys.com>]
9214 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
9216 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
9217 <Dominikus.Scherkl@biodata.com>. (The previous implementation
9218 worked incorrectly for those cases where range = 10..._2 and
9219 3*range is two bits longer than range.)
9222 *) Only add signing time to PKCS7 structures if it is not already
9226 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
9227 OBJ_ld_ce should be OBJ_id_ce.
9228 Also some ip-pda OIDs in crypto/objects/objects.txt were
9229 incorrect (cf. RFC 3039).
9230 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
9232 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
9233 returns early because it has nothing to do.
9234 [Andy Schneider <andy.schneider@bjss.co.uk>]
9236 *) [In 0.9.6c-engine release:]
9237 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
9238 [Andy Schneider <andy.schneider@bjss.co.uk>]
9240 *) [In 0.9.6c-engine release:]
9241 Add support for Cryptographic Appliance's keyserver technology.
9242 (Use engine 'keyclient')
9243 [Cryptographic Appliances and Geoff Thorpe]
9245 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
9246 is called via tools/c89.sh because arguments have to be
9247 rearranged (all '-L' options must appear before the first object
9249 [Richard Shapiro <rshapiro@abinitio.com>]
9251 *) [In 0.9.6c-engine release:]
9252 Add support for Broadcom crypto accelerator cards, backported
9254 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
9256 *) [In 0.9.6c-engine release:]
9257 Add support for SureWare crypto accelerator cards from
9258 Baltimore Technologies. (Use engine 'sureware')
9259 [Baltimore Technologies and Mark Cox]
9261 *) [In 0.9.6c-engine release:]
9262 Add support for crypto accelerator cards from Accelerated
9263 Encryption Processing, www.aep.ie. (Use engine 'aep')
9264 [AEP Inc. and Mark Cox]
9266 *) Add a configuration entry for gcc on UnixWare.
9267 [Gary Benson <gbenson@redhat.com>]
9269 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
9270 messages are stored in a single piece (fixed-length part and
9271 variable-length part combined) and fix various bugs found on the way.
9274 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
9275 instead. BIO_gethostbyname() does not know what timeouts are
9276 appropriate, so entries would stay in cache even when they have
9278 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
9280 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
9281 faced with a pathologically small ClientHello fragment that does
9282 not contain client_version: Instead of aborting with an error,
9283 simply choose the highest available protocol version (i.e.,
9284 TLS 1.0 unless it is disabled). In practice, ClientHello
9285 messages are never sent like this, but this change gives us
9286 strictly correct behaviour at least for TLS.
9289 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
9290 never resets s->method to s->ctx->method when called from within
9291 one of the SSL handshake functions.
9292 [Bodo Moeller; problem pointed out by Niko Baric]
9294 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
9295 (sent using the client's version number) if client_version is
9296 smaller than the protocol version in use. Also change
9297 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
9298 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
9299 the client will at least see that alert.
9302 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
9306 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
9307 client receives HelloRequest while in a handshake.
9308 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
9310 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
9311 should end in 'break', not 'goto end' which circumvents various
9312 cleanups done in state SSL_ST_OK. But session related stuff
9313 must be disabled for SSL_ST_OK in the case that we just sent a
9316 Also avoid some overhead by not calling ssl_init_wbio_buffer()
9317 before just sending a HelloRequest.
9318 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
9320 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
9321 reveal whether illegal block cipher padding was found or a MAC
9322 verification error occurred. (Neither SSLerr() codes nor alerts
9323 are directly visible to potential attackers, but the information
9324 may leak via logfiles.)
9326 Similar changes are not required for the SSL 2.0 implementation
9327 because the number of padding bytes is sent in clear for SSL 2.0,
9328 and the extra bytes are just ignored. However ssl/s2_pkt.c
9329 failed to verify that the purported number of padding bytes is in
9333 *) Add OpenUNIX-8 support including shared libraries
9334 (Boyd Lynn Gerber <gerberb@zenez.com>).
9337 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
9338 'wristwatch attack' using huge encoding parameters (cf.
9339 James H. Manger's CRYPTO 2001 paper). Note that the
9340 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
9341 encoding parameters and hence was not vulnerable.
9344 *) BN_sqr() bug fix.
9345 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
9347 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
9348 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
9349 followed by modular reduction.
9350 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
9352 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
9353 equivalent based on BN_pseudo_rand() instead of BN_rand().
9356 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
9357 This function was broken, as the check for a new client hello message
9358 to handle SGC did not allow these large messages.
9359 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
9362 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
9365 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
9366 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
9369 *) Rework the configuration and shared library support for Tru64 Unix.
9370 The configuration part makes use of modern compiler features and
9371 still retains old compiler behavior for those that run older versions
9372 of the OS. The shared library support part includes a variant that
9373 uses the RPATH feature, and is available through the special
9374 configuration target "alpha-cc-rpath", which will never be selected
9376 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
9378 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
9379 with the same message size as in ssl3_get_certificate_request().
9380 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
9381 messages might inadvertently be reject as too long.
9382 [Petr Lampa <lampa@fee.vutbr.cz>]
9384 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
9387 *) Modified SSL library such that the verify_callback that has been set
9388 specificly for an SSL object with SSL_set_verify() is actually being
9389 used. Before the change, a verify_callback set with this function was
9390 ignored and the verify_callback() set in the SSL_CTX at the time of
9391 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
9392 to allow the necessary settings.
9395 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
9396 explicitly to NULL, as at least on Solaris 8 this seems not always to be
9397 done automatically (in contradiction to the requirements of the C
9398 standard). This made problems when used from OpenSSH.
9401 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
9402 dh->length and always used
9404 BN_rand_range(priv_key, dh->p).
9406 BN_rand_range() is not necessary for Diffie-Hellman, and this
9407 specific range makes Diffie-Hellman unnecessarily inefficient if
9408 dh->length (recommended exponent length) is much smaller than the
9409 length of dh->p. We could use BN_rand_range() if the order of
9410 the subgroup was stored in the DH structure, but we only have
9415 BN_rand(priv_key, l, ...)
9417 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
9423 RSA_eay_public_encrypt
9424 RSA_eay_private_decrypt
9425 RSA_eay_private_encrypt (signing)
9426 RSA_eay_public_decrypt (signature verification)
9428 (default implementations for RSA_public_encrypt,
9429 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
9430 always reject numbers >= n.
9433 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
9434 to synchronize access to 'locking_thread'. This is necessary on
9435 systems where access to 'locking_thread' (an 'unsigned long'
9436 variable) is not atomic.
9439 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
9440 *before* setting the 'crypto_lock_rand' flag. The previous code had
9441 a race condition if 0 is a valid thread ID.
9442 [Travis Vitek <vitek@roguewave.com>]
9444 *) Add support for shared libraries under Irix.
9445 [Albert Chin-A-Young <china@thewrittenword.com>]
9447 *) Add configuration option to build on Linux on both big-endian and
9449 [Ralf Baechle <ralf@uni-koblenz.de>]
9451 *) Add the possibility to create shared libraries on HP-UX.
9454 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
9456 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
9457 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
9458 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
9459 PRNG state recovery was possible based on the output of
9460 one PRNG request appropriately sized to gain knowledge on
9461 'md' followed by enough consecutive 1-byte PRNG requests
9462 to traverse all of 'state'.
9464 1. When updating 'md_local' (the current thread's copy of 'md')
9465 during PRNG output generation, hash all of the previous
9466 'md_local' value, not just the half used for PRNG output.
9468 2. Make the number of bytes from 'state' included into the hash
9469 independent from the number of PRNG bytes requested.
9471 The first measure alone would be sufficient to avoid
9472 Markku-Juhani's attack. (Actually it had never occurred
9473 to me that the half of 'md_local' used for chaining was the
9474 half from which PRNG output bytes were taken -- I had always
9475 assumed that the secret half would be used.) The second
9476 measure makes sure that additional data from 'state' is never
9477 mixed into 'md_local' in small portions; this heuristically
9478 further strengthens the PRNG.
9481 *) Fix crypto/bn/asm/mips3.s.
9484 *) When only the key is given to "enc", the IV is undefined. Print out
9485 an error message in this case.
9488 *) Handle special case when X509_NAME is empty in X509 printing routines.
9491 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
9492 positive and less than q.
9495 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
9496 used: it isn't thread safe and the add_lock_callback should handle
9498 [Paul Rose <Paul.Rose@bridge.com>]
9500 *) Verify that incoming data obeys the block size in
9501 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
9505 [Ulf Möller, Bodo Möller]
9507 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
9508 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
9509 when fixing the server behaviour for backwards-compatible 'client
9510 hello' messages. (Note that the attack is impractical against
9511 SSL 3.0 and TLS 1.0 anyway because length and version checking
9512 means that the probability of guessing a valid ciphertext is
9513 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
9516 Before 0.9.5, the countermeasure (hide the error by generating a
9517 random 'decryption result') did not work properly because
9518 ERR_clear_error() was missing, meaning that SSL_get_error() would
9519 detect the supposedly ignored error.
9521 Both problems are now fixed.
9524 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
9525 (previously it was 1024).
9528 *) Fix for compatibility mode trust settings: ignore trust settings
9529 unless some valid trust or reject settings are present.
9532 *) Fix for blowfish EVP: its a variable length cipher.
9535 *) Fix various bugs related to DSA S/MIME verification. Handle missing
9536 parameters in DSA public key structures and return an error in the
9537 DSA routines if parameters are absent.
9540 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
9541 in the current directory if neither $RANDFILE nor $HOME was set.
9542 RAND_file_name() in 0.9.6a returned NULL in this case. This has
9543 caused some confusion to Windows users who haven't defined $HOME.
9544 Thus RAND_file_name() is changed again: e_os.h can define a
9545 DEFAULT_HOME, which will be used if $HOME is not set.
9546 For Windows, we use "C:"; on other platforms, we still require
9547 environment variables.
9549 *) Move 'if (!initialized) RAND_poll()' into regions protected by
9550 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
9551 having multiple threads call RAND_poll() concurrently.
9554 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
9555 combination of a flag and a thread ID variable.
9556 Otherwise while one thread is in ssleay_rand_bytes (which sets the
9557 flag), *other* threads can enter ssleay_add_bytes without obeying
9558 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
9559 that they do not hold after the first thread unsets add_do_not_lock).
9562 *) Change bctest again: '-x' expressions are not available in all
9566 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
9568 *) Fix a couple of memory leaks in PKCS7_dataDecode()
9569 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
9571 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
9572 the default extension for executables, if any. Also, make the perl
9573 scripts that use symlink() to test if it really exists and use "cp"
9574 if it doesn't. All this made OpenSSL compilable and installable in
9578 *) Fix for asn1_GetSequence() for indefinite length constructed data.
9579 If SEQUENCE is length is indefinite just set c->slen to the total
9580 amount of data available.
9581 [Steve Henson, reported by shige@FreeBSD.org]
9582 [This change does not apply to 0.9.7.]
9584 *) Change bctest to avoid here-documents inside command substitution
9585 (workaround for FreeBSD /bin/sh bug).
9586 For compatibility with Ultrix, avoid shell functions (introduced
9587 in the bctest version that searches along $PATH).
9590 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
9591 with des_encrypt() defined on some operating systems, like Solaris
9595 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
9596 On the Importance of Eliminating Errors in Cryptographic
9597 Computations, J. Cryptology 14 (2001) 2, 101-119,
9598 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
9601 *) MIPS assembler BIGNUM division bug fix.
9604 *) Disabled incorrect Alpha assembler code.
9607 *) Fix PKCS#7 decode routines so they correctly update the length
9608 after reading an EOC for the EXPLICIT tag.
9610 [This change does not apply to 0.9.7.]
9612 *) Fix bug in PKCS#12 key generation routines. This was triggered
9613 if a 3DES key was generated with a 0 initial byte. Include
9614 PKCS12_BROKEN_KEYGEN compilation option to retain the old
9615 (but broken) behaviour.
9618 *) Enhance bctest to search for a working bc along $PATH and print
9620 [Tim Rice <tim@multitalents.net> via Richard Levitte]
9622 *) Fix memory leaks in err.c: free err_data string if necessary;
9623 don't write to the wrong index in ERR_set_error_data.
9626 *) Implement ssl23_peek (analogous to ssl23_read), which previously
9630 *) Replace rdtsc with _emit statements for VC++ version 5.
9631 [Jeremy Cooper <jeremy@baymoo.org>]
9633 *) Make it possible to reuse SSLv2 sessions.
9636 *) In copy_email() check for >= 0 as a return value for
9637 X509_NAME_get_index_by_NID() since 0 is a valid index.
9638 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
9640 *) Avoid coredump with unsupported or invalid public keys by checking if
9641 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
9642 PKCS7_verify() fails with non detached data.
9645 *) Don't use getenv in library functions when run as setuid/setgid.
9646 New function OPENSSL_issetugid().
9649 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
9650 due to incorrect handling of multi-threading:
9652 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
9654 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
9656 3. Count how many times MemCheck_off() has been called so that
9657 nested use can be treated correctly. This also avoids
9658 inband-signalling in the previous code (which relied on the
9659 assumption that thread ID 0 is impossible).
9662 *) Add "-rand" option also to s_client and s_server.
9665 *) Fix CPU detection on Irix 6.x.
9666 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
9667 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
9669 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
9672 [This change does not apply to 0.9.7.]
9674 *) Use the cached encoding of an X509_NAME structure rather than
9675 copying it. This is apparently the reason for the libsafe "errors"
9676 but the code is actually correct.
9679 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
9680 Bleichenbacher's DSA attack.
9681 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
9682 to be set and top=0 forces the highest bit to be set; top=-1 is new
9683 and leaves the highest bit random.
9684 [Ulf Moeller, Bodo Moeller]
9686 *) In the NCONF_...-based implementations for CONF_... queries
9687 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
9688 a temporary CONF structure with the data component set to NULL
9689 (which gives segmentation faults in lh_retrieve).
9690 Instead, use NULL for the CONF pointer in CONF_get_string and
9691 CONF_get_number (which may use environment variables) and directly
9692 return NULL from CONF_get_section.
9695 *) Fix potential buffer overrun for EBCDIC.
9698 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
9699 keyUsage if basicConstraints absent for a CA.
9702 *) Make SMIME_write_PKCS7() write mail header values with a format that
9703 is more generally accepted (no spaces before the semicolon), since
9704 some programs can't parse those values properly otherwise. Also make
9705 sure BIO's that break lines after each write do not create invalid
9709 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
9710 macros previously used would not encode an empty SEQUENCE OF
9711 and break the signature.
9713 [This change does not apply to 0.9.7.]
9715 *) Zero the premaster secret after deriving the master secret in
9719 *) Add some EVP_add_digest_alias registrations (as found in
9720 OpenSSL_add_all_digests()) to SSL_library_init()
9721 aka OpenSSL_add_ssl_algorithms(). This provides improved
9722 compatibility with peers using X.509 certificates
9723 with unconventional AlgorithmIdentifier OIDs.
9726 *) Fix for Irix with NO_ASM.
9727 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
9729 *) ./config script fixes.
9730 [Ulf Moeller, Richard Levitte]
9732 *) Fix 'openssl passwd -1'.
9735 *) Change PKCS12_key_gen_asc() so it can cope with non null
9736 terminated strings whose length is passed in the passlen
9737 parameter, for example from PEM callbacks. This was done
9738 by adding an extra length parameter to asc2uni().
9739 [Steve Henson, reported by <oddissey@samsung.co.kr>]
9741 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
9742 call failed, free the DSA structure.
9745 *) Fix to uni2asc() to cope with zero length Unicode strings.
9746 These are present in some PKCS#12 files.
9749 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
9750 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
9751 when writing a 32767 byte record.
9752 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
9754 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
9755 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
9757 (RSA objects have a reference count access to which is protected
9758 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
9759 so they are meant to be shared between threads.)
9760 [Bodo Moeller, Geoff Thorpe; original patch submitted by
9761 "Reddie, Steven" <Steven.Reddie@ca.com>]
9763 *) Fix a deadlock in CRYPTO_mem_leaks().
9766 *) Use better test patterns in bntest.
9769 *) rand_win.c fix for Borland C.
9772 *) BN_rshift bugfix for n == 0.
9775 *) Add a 'bctest' script that checks for some known 'bc' bugs
9776 so that 'make test' does not abort just because 'bc' is broken.
9779 *) Store verify_result within SSL_SESSION also for client side to
9780 avoid potential security hole. (Re-used sessions on the client side
9781 always resulted in verify_result==X509_V_OK, not using the original
9782 result of the server certificate verification.)
9785 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
9786 SSL3_RT_APPLICATION_DATA, return 0.
9787 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
9791 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
9792 releases, have been re-implemented by renaming the previous
9793 implementations of ssl2_read and ssl3_read to ssl2_read_internal
9794 and ssl3_read_internal, respectively, and adding 'peek' parameters
9795 to them. The new ssl[23]_{read,peek} functions are calls to
9796 ssl[23]_read_internal with the 'peek' flag set appropriately.
9797 A 'peek' parameter has also been added to ssl3_read_bytes, which
9798 does the actual work for ssl3_read_internal.
9801 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
9802 the method-specific "init()" handler. Also clean up ex_data after
9803 calling the method-specific "finish()" handler. Previously, this was
9804 happening the other way round.
9807 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
9808 The previous value, 12, was not always sufficient for BN_mod_exp().
9811 *) Make sure that shared libraries get the internal name engine with
9812 the full version number and not just 0. This should mark the
9813 shared libraries as not backward compatible. Of course, this should
9814 be changed again when we can guarantee backward binary compatibility.
9817 *) Fix typo in get_cert_by_subject() in by_dir.c
9818 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
9820 *) Rework the system to generate shared libraries:
9822 - Make note of the expected extension for the shared libraries and
9823 if there is a need for symbolic links from for example libcrypto.so.0
9824 to libcrypto.so.0.9.7. There is extended info in Configure for
9827 - Make as few rebuilds of the shared libraries as possible.
9829 - Still avoid linking the OpenSSL programs with the shared libraries.
9831 - When installing, install the shared libraries separately from the
9835 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
9837 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
9838 and not in SSL_clear because the latter is also used by the
9839 accept/connect functions; previously, the settings made by
9840 SSL_set_read_ahead would be lost during the handshake.
9841 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
9843 *) Correct util/mkdef.pl to be selective about disabled algorithms.
9844 Previously, it would create entries for disabled algorithms no
9848 *) Added several new manual pages for SSL_* function.
9851 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
9853 *) In ssl23_get_client_hello, generate an error message when faced
9854 with an initial SSL 3.0/TLS record that is too small to contain the
9855 first two bytes of the ClientHello message, i.e. client_version.
9856 (Note that this is a pathologic case that probably has never happened
9857 in real life.) The previous approach was to use the version number
9858 from the record header as a substitute; but our protocol choice
9859 should not depend on that one because it is not authenticated
9860 by the Finished messages.
9863 *) More robust randomness gathering functions for Windows.
9864 [Jeffrey Altman <jaltman@columbia.edu>]
9866 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
9867 not set then we don't setup the error code for issuer check errors
9868 to avoid possibly overwriting other errors which the callback does
9869 handle. If an application does set the flag then we assume it knows
9870 what it is doing and can handle the new informational codes
9874 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
9875 a general "ANY" type, as such it should be able to decode anything
9876 including tagged types. However it didn't check the class so it would
9877 wrongly interpret tagged types in the same way as their universal
9878 counterpart and unknown types were just rejected. Changed so that the
9879 tagged and unknown types are handled in the same way as a SEQUENCE:
9880 that is the encoding is stored intact. There is also a new type
9881 "V_ASN1_OTHER" which is used when the class is not universal, in this
9882 case we have no idea what the actual type is so we just lump them all
9886 *) On VMS, stdout may very well lead to a file that is written to
9887 in a record-oriented fashion. That means that every write() will
9888 write a separate record, which will be read separately by the
9889 programs trying to read from it. This can be very confusing.
9891 The solution is to put a BIO filter in the way that will buffer
9892 text until a linefeed is reached, and then write everything a
9893 line at a time, so every record written will be an actual line,
9894 not chunks of lines and not (usually doesn't happen, but I've
9895 seen it once) several lines in one record. BIO_f_linebuffer() is
9898 Currently, it's a VMS-only method, because that's where it has
9899 been tested well enough.
9902 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
9903 it can return incorrect results.
9904 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
9905 but it was in 0.9.6-beta[12].)
9908 *) Disable the check for content being present when verifying detached
9909 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
9910 include zero length content when signing messages.
9913 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
9914 BIO_ctrl (for BIO pairs).
9917 *) Add DSO method for VMS.
9920 *) Bug fix: Montgomery multiplication could produce results with the
9924 *) Add RPM specification openssl.spec and modify it to build three
9925 packages. The default package contains applications, application
9926 documentation and run-time libraries. The devel package contains
9927 include files, static libraries and function documentation. The
9928 doc package contains the contents of the doc directory. The original
9929 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
9932 *) Add a large number of documentation files for many SSL routines.
9933 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
9935 *) Add a configuration entry for Sony News 4.
9936 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
9938 *) Don't set the two most significant bits to one when generating a
9939 random number < q in the DSA library.
9942 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
9943 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
9944 the underlying transport is blocking) if a handshake took place.
9945 (The default behaviour is needed by applications such as s_client
9946 and s_server that use select() to determine when to use SSL_read;
9947 but for applications that know in advance when to expect data, it
9948 just makes things more complicated.)
9951 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
9955 *) Add a few more EBCDIC conditionals that make `req' and `x509'
9956 work better on such systems.
9957 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9959 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
9960 Update PKCS12_parse() so it copies the friendlyName and the
9961 keyid to the certificates aux info.
9964 *) Fix bug in PKCS7_verify() which caused an infinite loop
9965 if there was more than one signature.
9966 [Sven Uszpelkat <su@celocom.de>]
9968 *) Major change in util/mkdef.pl to include extra information
9969 about each symbol, as well as presenting variables as well
9970 as functions. This change means that there's n more need
9971 to rebuild the .num files when some algorithms are excluded.
9974 *) Allow the verify time to be set by an application,
9975 rather than always using the current time.
9978 *) Phase 2 verify code reorganisation. The certificate
9979 verify code now looks up an issuer certificate by a
9980 number of criteria: subject name, authority key id
9981 and key usage. It also verifies self signed certificates
9982 by the same criteria. The main comparison function is
9983 X509_check_issued() which performs these checks.
9985 Lot of changes were necessary in order to support this
9986 without completely rewriting the lookup code.
9988 Authority and subject key identifier are now cached.
9990 The LHASH 'certs' is X509_STORE has now been replaced
9991 by a STACK_OF(X509_OBJECT). This is mainly because an
9992 LHASH can't store or retrieve multiple objects with
9993 the same hash value.
9995 As a result various functions (which were all internal
9996 use only) have changed to handle the new X509_STORE
9997 structure. This will break anything that messed round
9998 with X509_STORE internally.
10000 The functions X509_STORE_add_cert() now checks for an
10001 exact match, rather than just subject name.
10003 The X509_STORE API doesn't directly support the retrieval
10004 of multiple certificates matching a given criteria, however
10005 this can be worked round by performing a lookup first
10006 (which will fill the cache with candidate certificates)
10007 and then examining the cache for matches. This is probably
10008 the best we can do without throwing out X509_LOOKUP
10009 entirely (maybe later...).
10011 The X509_VERIFY_CTX structure has been enhanced considerably.
10013 All certificate lookup operations now go via a get_issuer()
10014 callback. Although this currently uses an X509_STORE it
10015 can be replaced by custom lookups. This is a simple way
10016 to bypass the X509_STORE hackery necessary to make this
10017 work and makes it possible to use more efficient techniques
10018 in future. A very simple version which uses a simple
10019 STACK for its trusted certificate store is also provided
10020 using X509_STORE_CTX_trusted_stack().
10022 The verify_cb() and verify() callbacks now have equivalents
10023 in the X509_STORE_CTX structure.
10025 X509_STORE_CTX also has a 'flags' field which can be used
10026 to customise the verify behaviour.
10029 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
10030 excludes S/MIME capabilities.
10033 *) When a certificate request is read in keep a copy of the
10034 original encoding of the signed data and use it when outputting
10035 again. Signatures then use the original encoding rather than
10036 a decoded, encoded version which may cause problems if the
10037 request is improperly encoded.
10040 *) For consistency with other BIO_puts implementations, call
10041 buffer_write(b, ...) directly in buffer_puts instead of calling
10044 In BIO_puts, increment b->num_write as in BIO_write.
10045 [Peter.Sylvester@EdelWeb.fr]
10047 *) Fix BN_mul_word for the case where the word is 0. (We have to use
10048 BN_zero, we may not return a BIGNUM with an array consisting of
10049 words set to zero.)
10052 *) Avoid calling abort() from within the library when problems are
10053 detected, except if preprocessor symbols have been defined
10054 (such as REF_CHECK, BN_DEBUG etc.).
10057 *) New openssl application 'rsautl'. This utility can be
10058 used for low level RSA operations. DER public key
10059 BIO/fp routines also added.
10062 *) New Configure entry and patches for compiling on QNX 4.
10063 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
10065 *) A demo state-machine implementation was sponsored by
10066 Nuron (http://www.nuron.com/) and is now available in
10067 demos/state_machine.
10070 *) New options added to the 'dgst' utility for signature
10071 generation and verification.
10074 *) Unrecognized PKCS#7 content types are now handled via a
10075 catch all ASN1_TYPE structure. This allows unsupported
10076 types to be stored as a "blob" and an application can
10077 encode and decode it manually.
10080 *) Fix various signed/unsigned issues to make a_strex.c
10081 compile under VC++.
10082 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
10084 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
10085 length if passed a buffer. ASN1_INTEGER_to_BN failed
10086 if passed a NULL BN and its argument was negative.
10087 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
10089 *) Modification to PKCS#7 encoding routines to output definite
10090 length encoding. Since currently the whole structures are in
10091 memory there's not real point in using indefinite length
10092 constructed encoding. However if OpenSSL is compiled with
10093 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
10096 *) Added BIO_vprintf() and BIO_vsnprintf().
10099 *) Added more prefixes to parse for in the strings written
10100 through a logging bio, to cover all the levels that are available
10101 through syslog. The prefixes are now:
10103 PANIC, EMERG, EMR => LOG_EMERG
10104 ALERT, ALR => LOG_ALERT
10105 CRIT, CRI => LOG_CRIT
10106 ERROR, ERR => LOG_ERR
10107 WARNING, WARN, WAR => LOG_WARNING
10108 NOTICE, NOTE, NOT => LOG_NOTICE
10109 INFO, INF => LOG_INFO
10110 DEBUG, DBG => LOG_DEBUG
10112 and as before, if none of those prefixes are present at the
10113 beginning of the string, LOG_ERR is chosen.
10115 On Win32, the LOG_* levels are mapped according to this:
10117 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
10118 LOG_WARNING => EVENTLOG_WARNING_TYPE
10119 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
10123 *) Made it possible to reconfigure with just the configuration
10124 argument "reconf" or "reconfigure". The command line arguments
10125 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
10126 and are retrieved from there when reconfiguring.
10129 *) MD4 implemented.
10130 [Assar Westerlund <assar@sics.se>, Richard Levitte]
10132 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
10135 *) The obj_dat.pl script was messing up the sorting of object
10136 names. The reason was that it compared the quoted version
10137 of strings as a result "OCSP" > "OCSP Signing" because
10138 " > SPACE. Changed script to store unquoted versions of
10139 names and add quotes on output. It was also omitting some
10140 names from the lookup table if they were given a default
10141 value (that is if SN is missing it is given the same
10142 value as LN and vice versa), these are now added on the
10143 grounds that if an object has a name we should be able to
10144 look it up. Finally added warning output when duplicate
10145 short or long names are found.
10148 *) Changes needed for Tandem NSK.
10149 [Scott Uroff <scott@xypro.com>]
10151 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
10152 RSA_padding_check_SSLv23(), special padding was never detected
10153 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
10154 version rollback attacks was not effective.
10156 In s23_clnt.c, don't use special rollback-attack detection padding
10157 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
10158 client; similarly, in s23_srvr.c, don't do the rollback check if
10159 SSL 2.0 is the only protocol enabled in the server.
10162 *) Make it possible to get hexdumps of unprintable data with 'openssl
10163 asn1parse'. By implication, the functions ASN1_parse_dump() and
10164 BIO_dump_indent() are added.
10167 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
10168 these print out strings and name structures based on various
10169 flags including RFC2253 support and proper handling of
10170 multibyte characters. Added options to the 'x509' utility
10171 to allow the various flags to be set.
10174 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
10175 Also change the functions X509_cmp_current_time() and
10176 X509_gmtime_adj() work with an ASN1_TIME structure,
10177 this will enable certificates using GeneralizedTime in validity
10178 dates to be checked.
10181 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
10182 negative public key encodings) on by default,
10183 NO_NEG_PUBKEY_BUG can be set to disable it.
10186 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
10187 content octets. An i2c_ASN1_OBJECT is unnecessary because
10188 the encoding can be trivially obtained from the structure.
10191 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
10192 not read locks (CRYPTO_r_[un]lock).
10195 *) A first attempt at creating official support for shared
10196 libraries through configuration. I've kept it so the
10197 default is static libraries only, and the OpenSSL programs
10198 are always statically linked for now, but there are
10199 preparations for dynamic linking in place.
10200 This has been tested on Linux and Tru64.
10203 *) Randomness polling function for Win9x, as described in:
10204 Peter Gutmann, Software Generation of Practically Strong
10208 *) Fix so PRNG is seeded in req if using an already existing
10212 *) New options to smime application. -inform and -outform
10213 allow alternative formats for the S/MIME message including
10214 PEM and DER. The -content option allows the content to be
10215 specified separately. This should allow things like Netscape
10216 form signing output easier to verify.
10219 *) Fix the ASN1 encoding of tags using the 'long form'.
10222 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
10223 STRING types. These convert content octets to and from the
10224 underlying type. The actual tag and length octets are
10225 already assumed to have been read in and checked. These
10226 are needed because all other string types have virtually
10227 identical handling apart from the tag. By having versions
10228 of the ASN1 functions that just operate on content octets
10229 IMPLICIT tagging can be handled properly. It also allows
10230 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
10231 and ASN1_INTEGER are identical apart from the tag.
10234 *) Change the handling of OID objects as follows:
10236 - New object identifiers are inserted in objects.txt, following
10237 the syntax given in objects.README.
10238 - objects.pl is used to process obj_mac.num and create a new
10240 - obj_dat.pl is used to create a new obj_dat.h, using the data in
10243 This is currently kind of a hack, and the perl code in objects.pl
10244 isn't very elegant, but it works as I intended. The simplest way
10245 to check that it worked correctly is to look in obj_dat.h and
10246 check the array nid_objs and make sure the objects haven't moved
10247 around (this is important!). Additions are OK, as well as
10248 consistent name changes.
10251 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
10254 *) Addition of the command line parameter '-rand file' to 'openssl req'.
10255 The given file adds to whatever has already been seeded into the
10256 random pool through the RANDFILE configuration file option or
10257 environment variable, or the default random state file.
10260 *) mkstack.pl now sorts each macro group into lexical order.
10261 Previously the output order depended on the order the files
10262 appeared in the directory, resulting in needless rewriting
10266 *) Patches to make OpenSSL compile under Win32 again. Mostly
10267 work arounds for the VC++ problem that it treats func() as
10268 func(void). Also stripped out the parts of mkdef.pl that
10269 added extra typesafe functions: these no longer exist.
10272 *) Reorganisation of the stack code. The macros are now all
10273 collected in safestack.h . Each macro is defined in terms of
10274 a "stack macro" of the form SKM_<name>(type, a, b). The
10275 DEBUG_SAFESTACK is now handled in terms of function casts,
10276 this has the advantage of retaining type safety without the
10277 use of additional functions. If DEBUG_SAFESTACK is not defined
10278 then the non typesafe macros are used instead. Also modified the
10279 mkstack.pl script to handle the new form. Needs testing to see
10280 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
10281 the default if no major problems. Similar behaviour for ASN1_SET_OF
10282 and PKCS12_STACK_OF.
10285 *) When some versions of IIS use the 'NET' form of private key the
10286 key derivation algorithm is different. Normally MD5(password) is
10287 used as a 128 bit RC4 key. In the modified case
10288 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
10289 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
10290 as the old Netscape_RSA functions except they have an additional
10291 'sgckey' parameter which uses the modified algorithm. Also added
10292 an -sgckey command line option to the rsa utility. Thanks to
10293 Adrian Peck <bertie@ncipher.com> for posting details of the modified
10294 algorithm to openssl-dev.
10297 *) The evp_local.h macros were using 'c.##kname' which resulted in
10298 invalid expansion on some systems (SCO 5.0.5 for example).
10299 Corrected to 'c.kname'.
10300 [Phillip Porch <root@theporch.com>]
10302 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
10303 a STACK of email addresses from a certificate or request, these look
10304 in the subject name and the subject alternative name extensions and
10305 omit any duplicate addresses.
10308 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
10309 This makes DSA verification about 2 % faster.
10312 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
10313 (meaning that now 2^5 values will be precomputed, which is only 4 KB
10314 plus overhead for 1024 bit moduli).
10315 This makes exponentiations about 0.5 % faster for 1024 bit
10316 exponents (as measured by "openssl speed rsa2048").
10319 *) Rename memory handling macros to avoid conflicts with other
10321 Malloc => OPENSSL_malloc
10322 Malloc_locked => OPENSSL_malloc_locked
10323 Realloc => OPENSSL_realloc
10324 Free => OPENSSL_free
10327 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
10328 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
10331 *) CygWin32 support.
10332 [John Jarvie <jjarvie@newsguy.com>]
10334 *) The type-safe stack code has been rejigged. It is now only compiled
10335 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
10336 by default all type-specific stack functions are "#define"d back to
10337 standard stack functions. This results in more streamlined output
10338 but retains the type-safety checking possibilities of the original
10342 *) The STACK code has been cleaned up, and certain type declarations
10343 that didn't make a lot of sense have been brought in line. This has
10344 also involved a cleanup of sorts in safestack.h to more correctly
10345 map type-safe stack functions onto their plain stack counterparts.
10346 This work has also resulted in a variety of "const"ifications of
10347 lots of the code, especially "_cmp" operations which should normally
10348 be prototyped with "const" parameters anyway.
10351 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
10352 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
10353 (The PRNG state consists of two parts, the large pool 'state' and 'md',
10354 where all of 'md' is used each time the PRNG is used, but 'state'
10355 is used only indexed by a cyclic counter. As entropy may not be
10356 well distributed from the beginning, 'md' is important as a
10357 chaining variable. However, the output function chains only half
10358 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
10359 all of 'md', and seeding with STATE_SIZE dummy bytes will result
10360 in all of 'state' being rewritten, with the new values depending
10361 on virtually all of 'md'. This overcomes the 80 bit limitation.)
10364 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
10365 the handshake is continued after ssl_verify_cert_chain();
10366 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
10367 can lead to 'unexplainable' connection aborts later.
10368 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
10370 *) Major EVP API cipher revision.
10371 Add hooks for extra EVP features. This allows various cipher
10372 parameters to be set in the EVP interface. Support added for variable
10373 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
10374 setting of RC2 and RC5 parameters.
10376 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
10379 Remove lots of duplicated code from the EVP library. For example *every*
10380 cipher init() function handles the 'iv' in the same way according to the
10381 cipher mode. They also all do nothing if the 'key' parameter is NULL and
10382 for CFB and OFB modes they zero ctx->num.
10384 New functionality allows removal of S/MIME code RC2 hack.
10386 Most of the routines have the same form and so can be declared in terms
10389 By shifting this to the top level EVP_CipherInit() it can be removed from
10390 all individual ciphers. If the cipher wants to handle IVs or keys
10391 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
10394 Change lots of functions like EVP_EncryptUpdate() to now return a
10395 value: although software versions of the algorithms cannot fail
10396 any installed hardware versions can.
10399 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
10400 this option is set, tolerate broken clients that send the negotiated
10401 protocol version number instead of the requested protocol version
10405 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
10406 i.e. non-zero for export ciphersuites, zero otherwise.
10407 Previous versions had this flag inverted, inconsistent with
10408 rsa_tmp_cb (..._TMP_RSA_CB).
10409 [Bodo Moeller; problem reported by Amit Chopra]
10411 *) Add missing DSA library text string. Work around for some IIS
10412 key files with invalid SEQUENCE encoding.
10415 *) Add a document (doc/standards.txt) that list all kinds of standards
10416 and so on that are implemented in OpenSSL.
10419 *) Enhance c_rehash script. Old version would mishandle certificates
10420 with the same subject name hash and wouldn't handle CRLs at all.
10421 Added -fingerprint option to crl utility, to support new c_rehash
10425 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
10428 *) Fix for SSL server purpose checking. Server checking was
10429 rejecting certificates which had extended key usage present
10430 but no ssl client purpose.
10431 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
10433 *) Make PKCS#12 code work with no password. The PKCS#12 spec
10434 is a little unclear about how a blank password is handled.
10435 Since the password in encoded as a BMPString with terminating
10436 double NULL a zero length password would end up as just the
10437 double NULL. However no password at all is different and is
10438 handled differently in the PKCS#12 key generation code. NS
10439 treats a blank password as zero length. MSIE treats it as no
10440 password on export: but it will try both on import. We now do
10441 the same: PKCS12_parse() tries zero length and no password if
10442 the password is set to "" or NULL (NULL is now a valid password:
10443 it wasn't before) as does the pkcs12 application.
10446 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
10447 perror when PEM_read_bio_X509_REQ fails, the error message must
10448 be obtained from the error queue.
10451 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
10452 it in ERR_remove_state if appropriate, and change ERR_get_state
10453 accordingly to avoid race conditions (this is necessary because
10454 thread_hash is no longer constant once set).
10457 *) Bugfix for linux-elf makefile.one.
10460 *) RSA_get_default_method() will now cause a default
10461 RSA_METHOD to be chosen if one doesn't exist already.
10462 Previously this was only set during a call to RSA_new()
10463 or RSA_new_method(NULL) meaning it was possible for
10464 RSA_get_default_method() to return NULL.
10467 *) Added native name translation to the existing DSO code
10468 that will convert (if the flag to do so is set) filenames
10469 that are sufficiently small and have no path information
10470 into a canonical native form. Eg. "blah" converted to
10471 "libblah.so" or "blah.dll" etc.
10474 *) New function ERR_error_string_n(e, buf, len) which is like
10475 ERR_error_string(e, buf), but writes at most 'len' bytes
10476 including the 0 terminator. For ERR_error_string_n, 'buf'
10478 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
10480 *) CONF library reworked to become more general. A new CONF
10481 configuration file reader "class" is implemented as well as a
10482 new functions (NCONF_*, for "New CONF") to handle it. The now
10483 old CONF_* functions are still there, but are reimplemented to
10484 work in terms of the new functions. Also, a set of functions
10485 to handle the internal storage of the configuration data is
10486 provided to make it easier to write new configuration file
10487 reader "classes" (I can definitely see something reading a
10488 configuration file in XML format, for example), called _CONF_*,
10489 or "the configuration storage API"...
10491 The new configuration file reading functions are:
10493 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
10494 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
10496 NCONF_default, NCONF_WIN32
10498 NCONF_dump_fp, NCONF_dump_bio
10500 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
10501 NCONF_new creates a new CONF object. This works in the same way
10502 as other interfaces in OpenSSL, like the BIO interface.
10503 NCONF_dump_* dump the internal storage of the configuration file,
10504 which is useful for debugging. All other functions take the same
10505 arguments as the old CONF_* functions wth the exception of the
10506 first that must be a `CONF *' instead of a `LHASH *'.
10508 To make it easer to use the new classes with the old CONF_* functions,
10509 the function CONF_set_default_method is provided.
10512 *) Add '-tls1' option to 'openssl ciphers', which was already
10513 mentioned in the documentation but had not been implemented.
10514 (This option is not yet really useful because even the additional
10515 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
10518 *) Initial DSO code added into libcrypto for letting OpenSSL (and
10519 OpenSSL-based applications) load shared libraries and bind to
10520 them in a portable way.
10521 [Geoff Thorpe, with contributions from Richard Levitte]
10523 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
10525 *) Make sure _lrotl and _lrotr are only used with MSVC.
10527 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
10528 (the default implementation of RAND_status).
10530 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
10531 to '-clrext' (= clear extensions), as intended and documented.
10532 [Bodo Moeller; inconsistency pointed out by Michael Attili
10533 <attili@amaxo.com>]
10535 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
10536 was larger than the MD block size.
10537 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
10539 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
10540 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
10541 using the passed key: if the passed key was a private key the result
10542 of X509_print(), for example, would be to print out all the private key
10546 *) des_quad_cksum() byte order bug fix.
10547 [Ulf Möller, using the problem description in krb4-0.9.7, where
10548 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
10550 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
10552 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
10554 *) For easily testing in shell scripts whether some command
10555 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
10556 returns with exit code 0 iff no command of the given name is available.
10557 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
10558 the output goes to stdout and nothing is printed to stderr.
10559 Additional arguments are always ignored.
10561 Since for each cipher there is a command of the same name,
10562 the 'no-cipher' compilation switches can be tested this way.
10564 ('openssl no-XXX' is not able to detect pseudo-commands such
10565 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
10568 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
10571 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
10572 is set; it will be thrown away anyway because each handshake creates
10574 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
10575 to parameters -- in previous versions (since OpenSSL 0.9.3) the
10576 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
10577 you effectively got SSL_OP_SINGLE_DH_USE when using this macro.
10580 *) New s_client option -ign_eof: EOF at stdin is ignored, and
10581 'Q' and 'R' lose their special meanings (quit/renegotiate).
10582 This is part of what -quiet does; unlike -quiet, -ign_eof
10583 does not suppress any output.
10586 *) Add compatibility options to the purpose and trust code. The
10587 purpose X509_PURPOSE_ANY is "any purpose" which automatically
10588 accepts a certificate or CA, this was the previous behaviour,
10589 with all the associated security issues.
10591 X509_TRUST_COMPAT is the old trust behaviour: only and
10592 automatically trust self signed roots in certificate store. A
10593 new trust setting X509_TRUST_DEFAULT is used to specify that
10594 a purpose has no associated trust setting and it should instead
10595 use the value in the default purpose.
10598 *) Fix the PKCS#8 DSA private key code so it decodes keys again
10599 and fix a memory leak.
10602 *) In util/mkerr.pl (which implements 'make errors'), preserve
10603 reason strings from the previous version of the .c file, as
10604 the default to have only downcase letters (and digits) in
10605 automatically generated reasons codes is not always appropriate.
10608 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
10609 using strerror. Previously, ERR_reason_error_string() returned
10610 library names as reason strings for SYSerr; but SYSerr is a special
10611 case where small numbers are errno values, not library numbers.
10614 *) Add '-dsaparam' option to 'openssl dhparam' application. This
10615 converts DSA parameters into DH parameters. (When creating parameters,
10616 DSA_generate_parameters is used.)
10619 *) Include 'length' (recommended exponent length) in C code generated
10620 by 'openssl dhparam -C'.
10623 *) The second argument to set_label in perlasm was already being used
10624 so couldn't be used as a "file scope" flag. Moved to third argument
10628 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
10629 instead of RAND_bytes for encryption IVs and salts.
10632 *) Include RAND_status() into RAND_METHOD instead of implementing
10633 it only for md_rand.c Otherwise replacing the PRNG by calling
10634 RAND_set_rand_method would be impossible.
10637 *) Don't let DSA_generate_key() enter an infinite loop if the random
10638 number generation fails.
10641 *) New 'rand' application for creating pseudo-random output.
10644 *) Added configuration support for Linux/IA64
10645 [Rolf Haberrecker <rolf@suse.de>]
10647 *) Assembler module support for Mingw32.
10650 *) Shared library support for HPUX (in shlib/).
10651 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
10653 *) Shared library support for Solaris gcc.
10654 [Lutz Behnke <behnke@trustcenter.de>]
10656 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
10658 *) PKCS7_encrypt() was adding text MIME headers twice because they
10659 were added manually and by SMIME_crlf_copy().
10662 *) In bntest.c don't call BN_rand with zero bits argument.
10663 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
10665 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
10666 case was implemented. This caused BN_div_recp() to fail occasionally.
10669 *) Add an optional second argument to the set_label() in the perl
10670 assembly language builder. If this argument exists and is set
10671 to 1 it signals that the assembler should use a symbol whose
10672 scope is the entire file, not just the current function. This
10673 is needed with MASM which uses the format label:: for this scope.
10674 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
10676 *) Change the ASN1 types so they are typedefs by default. Before
10677 almost all types were #define'd to ASN1_STRING which was causing
10678 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
10682 *) Change names of new functions to the new get1/get0 naming
10683 convention: After 'get1', the caller owns a reference count
10684 and has to call ..._free; 'get0' returns a pointer to some
10685 data structure without incrementing reference counters.
10686 (Some of the existing 'get' functions increment a reference
10687 counter, some don't.)
10688 Similarly, 'set1' and 'add1' functions increase reference
10689 counters or duplicate objects.
10692 *) Allow for the possibility of temp RSA key generation failure:
10693 the code used to assume it always worked and crashed on failure.
10696 *) Fix potential buffer overrun problem in BIO_printf().
10697 [Ulf Möller, using public domain code by Patrick Powell; problem
10698 pointed out by David Sacerdote <das33@cornell.edu>]
10700 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
10701 RAND_egd() and RAND_status(). In the command line application,
10702 the EGD socket can be specified like a seed file using RANDFILE
10706 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
10707 Some CAs (e.g. Verisign) distribute certificates in this form.
10710 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
10711 list to exclude them. This means that no special compilation option
10712 is needed to use anonymous DH: it just needs to be included in the
10716 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
10717 EVP_MD_type. The old functionality is available in a new macro called
10718 EVP_MD_md(). Change code that uses it and update docs.
10721 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
10722 where the 'void *' argument is replaced by a function pointer argument.
10723 Previously 'void *' was abused to point to functions, which works on
10724 many platforms, but is not correct. As these functions are usually
10725 called by macros defined in OpenSSL header files, most source code
10726 should work without changes.
10729 *) <openssl/opensslconf.h> (which is created by Configure) now contains
10730 sections with information on -D... compiler switches used for
10731 compiling the library so that applications can see them. To enable
10732 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
10733 must be defined. E.g.,
10734 #define OPENSSL_ALGORITHM_DEFINES
10735 #include <openssl/opensslconf.h>
10736 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
10737 [Richard Levitte, Ulf and Bodo Möller]
10739 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
10743 *) Change the 'other' type in certificate aux info to a STACK_OF
10744 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
10745 the required ASN1 format: arbitrary types determined by an OID.
10748 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
10749 argument to 'req'. This is not because the function is newer or
10750 better than others it just uses the work 'NEW' in the certificate
10751 request header lines. Some software needs this.
10754 *) Reorganise password command line arguments: now passwords can be
10755 obtained from various sources. Delete the PEM_cb function and make
10756 it the default behaviour: i.e. if the callback is NULL and the
10757 usrdata argument is not NULL interpret it as a null terminated pass
10758 phrase. If usrdata and the callback are NULL then the pass phrase
10759 is prompted for as usual.
10762 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
10763 the support is automatically enabled. The resulting binaries will
10764 autodetect the card and use it if present.
10765 [Ben Laurie and Compaq Inc.]
10767 *) Work around for Netscape hang bug. This sends certificate request
10768 and server done in one record. Since this is perfectly legal in the
10769 SSL/TLS protocol it isn't a "bug" option and is on by default. See
10770 the bugs/SSLv3 entry for more info.
10773 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
10776 *) Add -rand argument to smime and pkcs12 applications and read/write
10780 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
10783 *) Add command line password options to the remaining applications.
10786 *) Bug fix for BN_div_recp() for numerators with an even number of
10790 *) More tests in bntest.c, and changed test_bn output.
10793 *) ./config recognizes MacOS X now.
10796 *) Bug fix for BN_div() when the first words of num and divisor are
10797 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
10800 *) Add support for various broken PKCS#8 formats, and command line
10801 options to produce them.
10804 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
10805 get temporary BIGNUMs from a BN_CTX.
10808 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
10812 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
10813 include a #define from the old name to the new. The original intent
10814 was that statically linked binaries could for example just call
10815 SSLeay_add_all_ciphers() to just add ciphers to the table and not
10816 link with digests. This never worked because SSLeay_add_all_digests()
10817 and SSLeay_add_all_ciphers() were in the same source file so calling
10818 one would link with the other. They are now in separate source files.
10821 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
10824 *) Use a less unusual form of the Miller-Rabin primality test (it used
10825 a binary algorithm for exponentiation integrated into the Miller-Rabin
10826 loop, our standard modexp algorithms are faster).
10829 *) Support for the EBCDIC character set completed.
10830 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
10832 *) Source code cleanups: use const where appropriate, eliminate casts,
10833 use void * instead of char * in lhash.
10836 *) Bugfix: ssl3_send_server_key_exchange was not restartable
10837 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
10838 this the server could overwrite ephemeral keys that the client
10842 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
10843 using 50 iterations of the Rabin-Miller test.
10845 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
10846 iterations of the Rabin-Miller test as required by the appendix
10847 to FIPS PUB 186[-1]) instead of DSA_is_prime.
10848 As BN_is_prime_fasttest includes trial division, DSA parameter
10849 generation becomes much faster.
10851 This implies a change for the callback functions in DSA_is_prime
10852 and DSA_generate_parameters: The callback function is called once
10853 for each positive witness in the Rabin-Miller test, not just
10854 occasionally in the inner loop; and the parameters to the
10855 callback function now provide an iteration count for the outer
10856 loop rather than for the current invocation of the inner loop.
10857 DSA_generate_parameters additionally can call the callback
10858 function with an 'iteration count' of -1, meaning that a
10859 candidate has passed the trial division test (when q is generated
10860 from an application-provided seed, trial division is skipped).
10863 *) New function BN_is_prime_fasttest that optionally does trial
10864 division before starting the Rabin-Miller test and has
10865 an additional BN_CTX * argument (whereas BN_is_prime always
10866 has to allocate at least one BN_CTX).
10867 'callback(1, -1, cb_arg)' is called when a number has passed the
10868 trial division stage.
10871 *) Fix for bug in CRL encoding. The validity dates weren't being handled
10875 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
10878 *) New function BN_pseudo_rand().
10881 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
10882 bignum version of BN_from_montgomery() with the working code from
10883 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
10887 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
10888 made it impossible to use the same SSL_SESSION data structure in
10889 SSL2 clients in multiple threads.
10892 *) The return value of RAND_load_file() no longer counts bytes obtained
10893 by stat(). RAND_load_file(..., -1) is new and uses the complete file
10894 to seed the PRNG (previously an explicit byte count was required).
10895 [Ulf Möller, Bodo Möller]
10897 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
10898 used (char *) instead of (void *) and had casts all over the place.
10901 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
10904 *) Retain source code compatibility for BN_prime_checks macro:
10905 BN_is_prime(..., BN_prime_checks, ...) now uses
10906 BN_prime_checks_for_size to determine the appropriate number of
10907 Rabin-Miller iterations.
10910 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
10911 DH_CHECK_P_NOT_SAFE_PRIME.
10912 (Check if this is true? OpenPGP calls them "strong".)
10915 *) Merge the functionality of "dh" and "gendh" programs into a new program
10916 "dhparam". The old programs are retained for now but will handle DH keys
10917 (instead of parameters) in future.
10920 *) Make the ciphers, s_server and s_client programs check the return values
10921 when a new cipher list is set.
10924 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
10925 ciphers. Before when the 56bit ciphers were enabled the sorting was
10928 The syntax for the cipher sorting has been extended to support sorting by
10929 cipher-strength (using the strength_bits hard coded in the tables).
10930 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
10932 Fix a bug in the cipher-command parser: when supplying a cipher command
10933 string with an "undefined" symbol (neither command nor alphanumeric
10934 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
10935 an error is flagged.
10937 Due to the strength-sorting extension, the code of the
10938 ssl_create_cipher_list() function was completely rearranged. I hope that
10939 the readability was also increased :-)
10940 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
10942 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
10943 for the first serial number and places 2 in the serial number file. This
10944 avoids problems when the root CA is created with serial number zero and
10945 the first user certificate has the same issuer name and serial number
10949 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
10950 the new code. Add documentation for this stuff.
10953 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
10954 X509_*() to X509at_*() on the grounds that they don't handle X509
10955 structures and behave in an analogous way to the X509v3 functions:
10956 they shouldn't be called directly but wrapper functions should be used
10959 So we also now have some wrapper functions that call the X509at functions
10960 when passed certificate requests. (TO DO: similar things can be done with
10961 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
10962 things. Some of these need some d2i or i2d and print functionality
10963 because they handle more complex structures.)
10966 *) Add missing #ifndefs that caused missing symbols when building libssl
10967 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
10968 NO_RSA in ssl/s2*.c.
10969 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
10971 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
10972 has a return value which indicates the quality of the random data
10973 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
10974 error queue. New function RAND_pseudo_bytes() generates output that is
10975 guaranteed to be unique but not unpredictable. RAND_add is like
10976 RAND_seed, but takes an extra argument for an entropy estimate
10977 (RAND_seed always assumes full entropy).
10980 *) Do more iterations of Rabin-Miller probable prime test (specifically,
10981 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
10982 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
10983 in crypto/bn/bn_prime.c for the complete table). This guarantees a
10984 false-positive rate of at most 2^-80 for random input.
10987 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
10990 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
10991 in the 0.9.5 release), this returns the chain
10992 from an X509_CTX structure with a dup of the stack and all
10993 the X509 reference counts upped: so the stack will exist
10994 after X509_CTX_cleanup() has been called. Modify pkcs12.c
10997 Also make SSL_SESSION_print() print out the verify return
11001 *) Add manpage for the pkcs12 command. Also change the default
11002 behaviour so MAC iteration counts are used unless the new
11003 -nomaciter option is used. This improves file security and
11004 only older versions of MSIE (4.0 for example) need it.
11007 *) Honor the no-xxx Configure options when creating .DEF files.
11010 *) Add PKCS#10 attributes to field table: challengePassword,
11011 unstructuredName and unstructuredAddress. These are taken from
11012 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
11013 international characters are used.
11015 More changes to X509_ATTRIBUTE code: allow the setting of types
11016 based on strings. Remove the 'loc' parameter when adding
11017 attributes because these will be a SET OF encoding which is sorted
11021 *) Initial changes to the 'req' utility to allow request generation
11022 automation. This will allow an application to just generate a template
11023 file containing all the field values and have req construct the
11026 Initial support for X509_ATTRIBUTE handling. Stacks of these are
11027 used all over the place including certificate requests and PKCS#7
11028 structures. They are currently handled manually where necessary with
11029 some primitive wrappers for PKCS#7. The new functions behave in a
11030 manner analogous to the X509 extension functions: they allow
11031 attributes to be looked up by NID and added.
11033 Later something similar to the X509V3 code would be desirable to
11034 automatically handle the encoding, decoding and printing of the
11035 more complex types. The string types like challengePassword can
11036 be handled by the string table functions.
11038 Also modified the multi byte string table handling. Now there is
11039 a 'global mask' which masks out certain types. The table itself
11040 can use the flag STABLE_NO_MASK to ignore the mask setting: this
11041 is useful when for example there is only one permissible type
11042 (as in countryName) and using the mask might result in no valid
11046 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
11047 SSL_get_peer_finished to allow applications to obtain the latest
11048 Finished messages sent to the peer or expected from the peer,
11049 respectively. (SSL_get_peer_finished is usually the Finished message
11050 actually received from the peer, otherwise the protocol will be aborted.)
11052 As the Finished message are message digests of the complete handshake
11053 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
11054 be used for external authentication procedures when the authentication
11055 provided by SSL/TLS is not desired or is not enough.
11058 *) Enhanced support for Alpha Linux is added. Now ./config checks if
11059 the host supports BWX extension and if Compaq C is present on the
11060 $PATH. Just exploiting of the BWX extension results in 20-30%
11061 performance kick for some algorithms, e.g. DES and RC4 to mention
11062 a couple. Compaq C in turn generates ~20% faster code for MD5 and
11066 *) Add support for MS "fast SGC". This is arguably a violation of the
11067 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
11068 weak crypto and after checking the certificate is SGC a second one
11069 with strong crypto. MS SGC stops the first handshake after receiving
11070 the server certificate message and sends a second client hello. Since
11071 a server will typically do all the time consuming operations before
11072 expecting any further messages from the client (server key exchange
11073 is the most expensive) there is little difference between the two.
11075 To get OpenSSL to support MS SGC we have to permit a second client
11076 hello message after we have sent server done. In addition we have to
11077 reset the MAC if we do get this second client hello.
11080 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
11081 if a DER encoded private key is RSA or DSA traditional format. Changed
11082 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
11083 format DER encoded private key. Newer code should use PKCS#8 format which
11084 has the key type encoded in the ASN1 structure. Added DER private key
11085 support to pkcs8 application.
11088 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
11089 ciphersuites has been selected (as required by the SSL 3/TLS 1
11090 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
11091 is set, we interpret this as a request to violate the specification
11092 (the worst that can happen is a handshake failure, and 'correct'
11093 behaviour would result in a handshake failure anyway).
11096 *) In SSL_CTX_add_session, take into account that there might be multiple
11097 SSL_SESSION structures with the same session ID (e.g. when two threads
11098 concurrently obtain them from an external cache).
11099 The internal cache can handle only one SSL_SESSION with a given ID,
11100 so if there's a conflict, we now throw out the old one to achieve
11104 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
11105 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
11106 some routines that use cipher OIDs: some ciphers do not have OIDs
11107 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
11111 *) Simplify the trust setting structure and code. Now we just have
11112 two sequences of OIDs for trusted and rejected settings. These will
11113 typically have values the same as the extended key usage extension
11114 and any application specific purposes.
11116 The trust checking code now has a default behaviour: it will just
11117 check for an object with the same NID as the passed id. Functions can
11118 be provided to override either the default behaviour or the behaviour
11119 for a given id. SSL client, server and email already have functions
11120 in place for compatibility: they check the NID and also return "trusted"
11121 if the certificate is self signed.
11124 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
11125 traditional format into an EVP_PKEY structure.
11128 *) Add a password callback function PEM_cb() which either prompts for
11129 a password if usr_data is NULL or otherwise assumes it is a null
11130 terminated password. Allow passwords to be passed on command line
11131 environment or config files in a few more utilities.
11134 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
11135 keys. Add some short names for PKCS#8 PBE algorithms and allow them
11136 to be specified on the command line for the pkcs8 and pkcs12 utilities.
11137 Update documentation.
11140 *) Support for ASN1 "NULL" type. This could be handled before by using
11141 ASN1_TYPE but there wasn't any function that would try to read a NULL
11142 and produce an error if it couldn't. For compatibility we also have
11143 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
11144 don't allocate anything because they don't need to.
11147 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
11149 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
11151 *) Rebuild of the memory allocation routines used by OpenSSL code and
11152 possibly others as well. The purpose is to make an interface that
11153 provide hooks so anyone can build a separate set of allocation and
11154 deallocation routines to be used by OpenSSL, for example memory
11155 pool implementations, or something else, which was previously hard
11156 since Malloc(), Realloc() and Free() were defined as macros having
11157 the values malloc, realloc and free, respectively (except for Win32
11158 compilations). The same is provided for memory debugging code.
11159 OpenSSL already comes with functionality to find memory leaks, but
11160 this gives people a chance to debug other memory problems.
11162 With these changes, a new set of functions and macros have appeared:
11164 CRYPTO_set_mem_debug_functions() [F]
11165 CRYPTO_get_mem_debug_functions() [F]
11166 CRYPTO_dbg_set_options() [F]
11167 CRYPTO_dbg_get_options() [F]
11168 CRYPTO_malloc_debug_init() [M]
11170 The memory debug functions are NULL by default, unless the library
11171 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
11172 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
11173 gives the standard debugging functions that come with OpenSSL) or
11174 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
11175 provided by the library user) must be used. When the standard
11176 debugging functions are used, CRYPTO_dbg_set_options can be used to
11177 request additional information:
11178 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
11179 the CRYPTO_MDEBUG_xxx macro when compiling the library.
11181 Also, things like CRYPTO_set_mem_functions will always give the
11182 expected result (the new set of functions is used for allocation
11183 and deallocation) at all times, regardless of platform and compiler
11186 To finish it up, some functions that were never use in any other
11187 way than through macros have a new API and new semantic:
11189 CRYPTO_dbg_malloc()
11190 CRYPTO_dbg_realloc()
11193 All macros of value have retained their old syntax.
11194 [Richard Levitte and Bodo Moeller]
11196 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
11197 ordering of SMIMECapabilities wasn't in "strength order" and there
11198 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
11202 *) Some ASN1 types with illegal zero length encoding (INTEGER,
11203 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
11204 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
11206 *) Merge in my S/MIME library for OpenSSL. This provides a simple
11207 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
11208 functionality to handle multipart/signed properly) and a utility
11209 called 'smime' to call all this stuff. This is based on code I
11210 originally wrote for Celo who have kindly allowed it to be
11211 included in OpenSSL.
11214 *) Add variants des_set_key_checked and des_set_key_unchecked of
11215 des_set_key (aka des_key_sched). Global variable des_check_key
11216 decides which of these is called by des_set_key; this way
11217 des_check_key behaves as it always did, but applications and
11218 the library itself, which was buggy for des_check_key == 1,
11219 have a cleaner way to pick the version they need.
11222 *) New function PKCS12_newpass() which changes the password of a
11226 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
11227 dynamic mix. In both cases the ids can be used as an index into the
11228 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
11229 functions so they accept a list of the field values and the
11230 application doesn't need to directly manipulate the X509_TRUST
11234 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
11238 *) Modify the way the V3 extension code looks up extensions. This now
11239 works in a similar way to the object code: we have some "standard"
11240 extensions in a static table which is searched with OBJ_bsearch()
11241 and the application can add dynamic ones if needed. The file
11242 crypto/x509v3/ext_dat.h now has the info: this file needs to be
11243 updated whenever a new extension is added to the core code and kept
11244 in ext_nid order. There is a simple program 'tabtest.c' which checks
11245 this. New extensions are not added too often so this file can readily
11246 be maintained manually.
11248 There are two big advantages in doing things this way. The extensions
11249 can be looked up immediately and no longer need to be "added" using
11250 X509V3_add_standard_extensions(): this function now does nothing.
11251 [Side note: I get *lots* of email saying the extension code doesn't
11252 work because people forget to call this function]
11253 Also no dynamic allocation is done unless new extensions are added:
11254 so if we don't add custom extensions there is no need to call
11255 X509V3_EXT_cleanup().
11258 *) Modify enc utility's salting as follows: make salting the default. Add a
11259 magic header, so unsalted files fail gracefully instead of just decrypting
11260 to garbage. This is because not salting is a big security hole, so people
11261 should be discouraged from doing it.
11264 *) Fixes and enhancements to the 'x509' utility. It allowed a message
11265 digest to be passed on the command line but it only used this
11266 parameter when signing a certificate. Modified so all relevant
11267 operations are affected by the digest parameter including the
11268 -fingerprint and -x509toreq options. Also -x509toreq choked if a
11269 DSA key was used because it didn't fix the digest.
11272 *) Initial certificate chain verify code. Currently tests the untrusted
11273 certificates for consistency with the verify purpose (which is set
11274 when the X509_STORE_CTX structure is set up) and checks the pathlength.
11276 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
11277 this is because it will reject chains with invalid extensions whereas
11278 every previous version of OpenSSL and SSLeay made no checks at all.
11280 Trust code: checks the root CA for the relevant trust settings. Trust
11281 settings have an initial value consistent with the verify purpose: e.g.
11282 if the verify purpose is for SSL client use it expects the CA to be
11283 trusted for SSL client use. However the default value can be changed to
11284 permit custom trust settings: one example of this would be to only trust
11285 certificates from a specific "secure" set of CAs.
11287 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
11288 which should be used for version portability: especially since the
11289 verify structure is likely to change more often now.
11291 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
11292 to set them. If not set then assume SSL clients will verify SSL servers
11295 Two new options to the verify program: -untrusted allows a set of
11296 untrusted certificates to be passed in and -purpose which sets the
11297 intended purpose of the certificate. If a purpose is set then the
11298 new chain verify code is used to check extension consistency.
11301 *) Support for the authority information access extension.
11304 *) Modify RSA and DSA PEM read routines to transparently handle
11305 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
11306 public keys in a format compatible with certificate
11307 SubjectPublicKeyInfo structures. Unfortunately there were already
11308 functions called *_PublicKey_* which used various odd formats so
11309 these are retained for compatibility: however the DSA variants were
11310 never in a public release so they have been deleted. Changed dsa/rsa
11311 utilities to handle the new format: note no releases ever handled public
11312 keys so we should be OK.
11314 The primary motivation for this change is to avoid the same fiasco
11315 that dogs private keys: there are several incompatible private key
11316 formats some of which are standard and some OpenSSL specific and
11317 require various evil hacks to allow partial transparent handling and
11318 even then it doesn't work with DER formats. Given the option anything
11319 other than PKCS#8 should be dumped: but the other formats have to
11320 stay in the name of compatibility.
11322 With public keys and the benefit of hindsight one standard format
11323 is used which works with EVP_PKEY, RSA or DSA structures: though
11324 it clearly returns an error if you try to read the wrong kind of key.
11326 Added a -pubkey option to the 'x509' utility to output the public key.
11327 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
11328 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
11329 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
11330 that do the same as the EVP_PKEY_assign_*() except they up the
11331 reference count of the added key (they don't "swallow" the
11335 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
11336 CRLs would fail if the file contained no certificates or no CRLs:
11337 added a new function to read in both types and return the number
11338 read: this means that if none are read it will be an error. The
11339 DER versions of the certificate and CRL reader would always fail
11340 because it isn't possible to mix certificates and CRLs in DER format
11341 without choking one or the other routine. Changed this to just read
11342 a certificate: this is the best we can do. Also modified the code
11343 in apps/verify.c to take notice of return codes: it was previously
11344 attempting to read in certificates from NULL pointers and ignoring
11345 any errors: this is one reason why the cert and CRL reader seemed
11346 to work. It doesn't check return codes from the default certificate
11347 routines: these may well fail if the certificates aren't installed.
11350 *) Code to support otherName option in GeneralName.
11353 *) First update to verify code. Change the verify utility
11354 so it warns if it is passed a self signed certificate:
11355 for consistency with the normal behaviour. X509_verify
11356 has been modified to it will now verify a self signed
11357 certificate if *exactly* the same certificate appears
11358 in the store: it was previously impossible to trust a
11359 single self signed certificate. This means that:
11360 openssl verify ss.pem
11361 now gives a warning about a self signed certificate but
11362 openssl verify -CAfile ss.pem ss.pem
11366 *) For servers, store verify_result in SSL_SESSION data structure
11367 (and add it to external session representation).
11368 This is needed when client certificate verifications fails,
11369 but an application-provided verification callback (set by
11370 SSL_CTX_set_cert_verify_callback) allows accepting the session
11371 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
11372 but returns 1): When the session is reused, we have to set
11373 ssl->verify_result to the appropriate error code to avoid
11375 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
11377 *) Fix a bug in the new PKCS#7 code: it didn't consider the
11378 case in PKCS7_dataInit() where the signed PKCS7 structure
11379 didn't contain any existing data because it was being created.
11380 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
11382 *) Add a salt to the key derivation routines in enc.c. This
11383 forms the first 8 bytes of the encrypted file. Also add a
11384 -S option to allow a salt to be input on the command line.
11387 *) New function X509_cmp(). Oddly enough there wasn't a function
11388 to compare two certificates. We do this by working out the SHA1
11389 hash and comparing that. X509_cmp() will be needed by the trust
11393 *) SSL_get1_session() is like SSL_get_session(), but increments
11394 the reference count in the SSL_SESSION returned.
11395 [Geoff Thorpe <geoff@eu.c2.net>]
11397 *) Fix for 'req': it was adding a null to request attributes.
11398 Also change the X509_LOOKUP and X509_INFO code to handle
11399 certificate auxiliary information.
11402 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
11406 *) Add the possibility to add extra information to the memory leak
11407 detecting output, to form tracebacks, showing from where each
11408 allocation was originated: CRYPTO_push_info("constant string") adds
11409 the string plus current file name and line number to a per-thread
11410 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
11411 is like calling CYRPTO_pop_info() until the stack is empty.
11412 Also updated memory leak detection code to be multi-thread-safe.
11415 *) Add options -text and -noout to pkcs7 utility and delete the
11416 encryption options which never did anything. Update docs.
11419 *) Add options to some of the utilities to allow the pass phrase
11420 to be included on either the command line (not recommended on
11421 OSes like Unix) or read from the environment. Update the
11422 manpages and fix a few bugs.
11425 *) Add a few manpages for some of the openssl commands.
11428 *) Fix the -revoke option in ca. It was freeing up memory twice,
11429 leaking and not finding already revoked certificates.
11432 *) Extensive changes to support certificate auxiliary information.
11433 This involves the use of X509_CERT_AUX structure and X509_AUX
11434 functions. An X509_AUX function such as PEM_read_X509_AUX()
11435 can still read in a certificate file in the usual way but it
11436 will also read in any additional "auxiliary information". By
11437 doing things this way a fair degree of compatibility can be
11438 retained: existing certificates can have this information added
11439 using the new 'x509' options.
11441 Current auxiliary information includes an "alias" and some trust
11442 settings. The trust settings will ultimately be used in enhanced
11443 certificate chain verification routines: currently a certificate
11444 can only be trusted if it is self signed and then it is trusted
11448 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
11449 The problem was that one of the replacement routines had not been working
11450 since SSLeay releases. For now the offending routine has been replaced
11451 with non-optimised assembler. Even so, this now gives around 95%
11452 performance improvement for 1024 bit RSA signs.
11455 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
11456 handling. Most clients have the effective key size in bits equal to
11457 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
11458 A few however don't do this and instead use the size of the decrypted key
11459 to determine the RC2 key length and the AlgorithmIdentifier to determine
11460 the effective key length. In this case the effective key length can still
11461 be 40 bits but the key length can be 168 bits for example. This is fixed
11462 by manually forcing an RC2 key into the EVP_PKEY structure because the
11463 EVP code can't currently handle unusual RC2 key sizes: it always assumes
11464 the key length and effective key length are equal.
11467 *) Add a bunch of functions that should simplify the creation of
11468 X509_NAME structures. Now you should be able to do:
11469 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
11470 and have it automatically work out the correct field type and fill in
11471 the structures. The more adventurous can try:
11472 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
11473 and it will (hopefully) work out the correct multibyte encoding.
11476 *) Change the 'req' utility to use the new field handling and multibyte
11477 copy routines. Before the DN field creation was handled in an ad hoc
11478 way in req, ca, and x509 which was rather broken and didn't support
11479 BMPStrings or UTF8Strings. Since some software doesn't implement
11480 BMPStrings or UTF8Strings yet, they can be enabled using the config file
11481 using the dirstring_type option. See the new comment in the default
11482 openssl.cnf for more info.
11485 *) Make crypto/rand/md_rand.c more robust:
11486 - Assure unique random numbers after fork().
11487 - Make sure that concurrent threads access the global counter and
11488 md serializably so that we never lose entropy in them
11489 or use exactly the same state in multiple threads.
11490 Access to the large state is not always serializable because
11491 the additional locking could be a performance killer, and
11492 md should be large enough anyway.
11495 *) New file apps/app_rand.c with commonly needed functionality
11496 for handling the random seed file.
11498 Use the random seed file in some applications that previously did not:
11500 dsaparam -genkey (which also ignored its '-rand' option),
11503 x509 (when signing).
11504 Except on systems with /dev/urandom, it is crucial to have a random
11505 seed file at least for key creation, DSA signing, and for DH exchanges;
11506 for RSA signatures we could do without one.
11508 gendh and gendsa (unlike genrsa) used to read only the first byte
11509 of each file listed in the '-rand' option. The function as previously
11510 found in genrsa is now in app_rand.c and is used by all programs
11511 that support '-rand'.
11514 *) In RAND_write_file, use mode 0600 for creating files;
11515 don't just chmod when it may be too late.
11518 *) Report an error from X509_STORE_load_locations
11519 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
11522 *) New function ASN1_mbstring_copy() this copies a string in either
11523 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
11524 into an ASN1_STRING type. A mask of permissible types is passed
11525 and it chooses the "minimal" type to use or an error if not type
11529 *) Add function equivalents to the various macros in asn1.h. The old
11530 macros are retained with an M_ prefix. Code inside the library can
11531 use the M_ macros. External code (including the openssl utility)
11532 should *NOT* in order to be "shared library friendly".
11535 *) Add various functions that can check a certificate's extensions
11536 to see if it usable for various purposes such as SSL client,
11537 server or S/MIME and CAs of these types. This is currently
11538 VERY EXPERIMENTAL but will ultimately be used for certificate chain
11539 verification. Also added a -purpose flag to x509 utility to
11540 print out all the purposes.
11543 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
11547 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
11548 for, obtain and decode and extension and obtain its critical flag.
11549 This allows all the necessary extension code to be handled in a
11550 single function call.
11553 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
11554 platforms. See crypto/rc4/rc4_enc.c for further details.
11557 *) New -noout option to asn1parse. This causes no output to be produced
11558 its main use is when combined with -strparse and -out to extract data
11559 from a file (which may not be in ASN.1 format).
11562 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
11563 when producing the local key id.
11564 [Richard Levitte <levitte@stacken.kth.se>]
11566 *) New option -dhparam in s_server. This allows a DH parameter file to be
11567 stated explicitly. If it is not stated then it tries the first server
11568 certificate file. The previous behaviour hard coded the filename
11572 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
11573 a public key to be input or output. For example:
11574 openssl rsa -in key.pem -pubout -out pubkey.pem
11575 Also added necessary DSA public key functions to handle this.
11578 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
11579 in the message. This was handled by allowing
11580 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
11581 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
11583 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
11584 to the end of the strings whereas this didn't. This would cause problems
11585 if strings read with d2i_ASN1_bytes() were later modified.
11586 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
11588 *) Fix for base64 decode bug. When a base64 bio reads only one line of
11589 data and it contains EOF it will end up returning an error. This is
11590 caused by input 46 bytes long. The cause is due to the way base64
11591 BIOs find the start of base64 encoded data. They do this by trying a
11592 trial decode on each line until they find one that works. When they
11593 do a flag is set and it starts again knowing it can pass all the
11594 data directly through the decoder. Unfortunately it doesn't reset
11595 the context it uses. This means that if EOF is reached an attempt
11596 is made to pass two EOFs through the context and this causes the
11597 resulting error. This can also cause other problems as well. As is
11598 usual with these problems it takes *ages* to find and the fix is
11599 trivial: move one line.
11600 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
11602 *) Ugly workaround to get s_client and s_server working under Windows. The
11603 old code wouldn't work because it needed to select() on sockets and the
11604 tty (for keypresses and to see if data could be written). Win32 only
11605 supports select() on sockets so we select() with a 1s timeout on the
11606 sockets and then see if any characters are waiting to be read, if none
11607 are present then we retry, we also assume we can always write data to
11608 the tty. This isn't nice because the code then blocks until we've
11609 received a complete line of data and it is effectively polling the
11610 keyboard at 1s intervals: however it's quite a bit better than not
11611 working at all :-) A dedicated Windows application might handle this
11612 with an event loop for example.
11615 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
11616 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
11617 will be called when RSA_sign() and RSA_verify() are used. This is useful
11618 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
11619 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
11620 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
11621 This necessitated the support of an extra signature type NID_md5_sha1
11622 for SSL signatures and modifications to the SSL library to use it instead
11623 of calling RSA_public_decrypt() and RSA_private_encrypt().
11626 *) Add new -verify -CAfile and -CApath options to the crl program, these
11627 will lookup a CRL issuers certificate and verify the signature in a
11628 similar way to the verify program. Tidy up the crl program so it
11629 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
11630 less strict. It will now permit CRL extensions even if it is not
11631 a V2 CRL: this will allow it to tolerate some broken CRLs.
11634 *) Initialize all non-automatic variables each time one of the openssl
11635 sub-programs is started (this is necessary as they may be started
11636 multiple times from the "OpenSSL>" prompt).
11637 [Lennart Bang, Bodo Moeller]
11639 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
11640 removing all other RSA functionality (this is what NO_RSA does). This
11641 is so (for example) those in the US can disable those operations covered
11642 by the RSA patent while allowing storage and parsing of RSA keys and RSA
11646 *) Non-copying interface to BIO pairs.
11647 (still largely untested)
11650 *) New function ASN1_tag2str() to convert an ASN1 tag to a descriptive
11651 ASCII string. This was handled independently in various places before.
11654 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
11655 UTF8 strings a character at a time.
11658 *) Use client_version from client hello to select the protocol
11659 (s23_srvr.c) and for RSA client key exchange verification
11660 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
11663 *) Add various utility functions to handle SPKACs, these were previously
11664 handled by poking round in the structure internals. Added new function
11665 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
11666 print, verify and generate SPKACs. Based on an original idea from
11667 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
11670 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
11673 *) Allow the config file extension section to be overwritten on the
11674 command line. Based on an original idea from Massimiliano Pala
11675 <madwolf@comune.modena.it>. The new option is called -extensions
11676 and can be applied to ca, req and x509. Also -reqexts to override
11677 the request extensions in req and -crlexts to override the crl extensions
11681 *) Add new feature to the SPKAC handling in ca. Now you can include
11682 the same field multiple times by preceding it by "XXXX." for example:
11685 this is the same syntax as used in the req config file.
11688 *) Allow certificate extensions to be added to certificate requests. These
11689 are specified in a 'req_extensions' option of the req section of the
11690 config file. They can be printed out with the -text option to req but
11691 are otherwise ignored at present.
11694 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
11695 data read consists of only the final block it would not decrypted because
11696 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
11697 A misplaced 'break' also meant the decrypted final block might not be
11698 copied until the next read.
11701 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
11702 a few extra parameters to the DH structure: these will be useful if
11703 for example we want the value of 'q' or implement X9.42 DH.
11706 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
11707 provides hooks that allow the default DSA functions or functions on a
11708 "per key" basis to be replaced. This allows hardware acceleration and
11709 hardware key storage to be handled without major modification to the
11710 library. Also added low level modexp hooks and CRYPTO_EX structure and
11711 associated functions.
11714 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
11715 as "read only": it can't be written to and the buffer it points to will
11716 not be freed. Reading from a read only BIO is much more efficient than
11717 a normal memory BIO. This was added because there are several times when
11718 an area of memory needs to be read from a BIO. The previous method was
11719 to create a memory BIO and write the data to it, this results in two
11720 copies of the data and an O(n^2) reading algorithm. There is a new
11721 function BIO_new_mem_buf() which creates a read only memory BIO from
11722 an area of memory. Also modified the PKCS#7 routines to use read only
11726 *) Bugfix: ssl23_get_client_hello did not work properly when called in
11727 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
11728 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
11729 but a retry condition occurred while trying to read the rest.
11732 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
11733 NID_pkcs7_encrypted by default: this was wrong since this should almost
11734 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
11735 the encrypted data type: this is a more sensible place to put it and it
11736 allows the PKCS#12 code to be tidied up that duplicated this
11740 *) Changed obj_dat.pl script so it takes its input and output files on
11741 the command line. This should avoid shell escape redirection problems
11745 *) Initial support for certificate extension requests, these are included
11746 in things like Xenroll certificate requests. Included functions to allow
11747 extensions to be obtained and added.
11750 *) -crlf option to s_client and s_server for sending newlines as
11751 CRLF (as required by many protocols).
11754 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
11756 *) Install libRSAglue.a when OpenSSL is built with RSAref.
11757 [Ralf S. Engelschall]
11759 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
11760 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
11762 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
11766 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
11767 DH parameters/keys (q is lost during that conversion, but the resulting
11768 DH parameters contain its length).
11770 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
11771 much faster than DH_generate_parameters (which creates parameters
11772 where p = 2*q + 1), and also the smaller q makes DH computations
11773 much more efficient (160-bit exponentiation instead of 1024-bit
11774 exponentiation); so this provides a convenient way to support DHE
11775 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
11776 utter importance to use
11777 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
11779 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
11780 when such DH parameters are used, because otherwise small subgroup
11781 attacks may become possible!
11784 *) Avoid memory leak in i2d_DHparams.
11787 *) Allow the -k option to be used more than once in the enc program:
11788 this allows the same encrypted message to be read by multiple recipients.
11791 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
11792 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
11793 it will always use the numerical form of the OID, even if it has a short
11797 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
11798 method only got called if p,q,dmp1,dmq1,iqmp components were present,
11799 otherwise bn_mod_exp was called. In the case of hardware keys for example
11800 no private key components need be present and it might store extra data
11801 in the RSA structure, which cannot be accessed from bn_mod_exp.
11802 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
11803 private key operations.
11806 *) Added support for SPARC Linux.
11809 *) pem_password_cb function type incompatibly changed from
11810 typedef int pem_password_cb(char *buf, int size, int rwflag);
11812 ....(char *buf, int size, int rwflag, void *userdata);
11813 so that applications can pass data to their callbacks:
11814 The PEM[_ASN1]_{read,write}... functions and macros now take an
11815 additional void * argument, which is just handed through whenever
11816 the password callback is called.
11817 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
11819 New function SSL_CTX_set_default_passwd_cb_userdata.
11821 Compatibility note: As many C implementations push function arguments
11822 onto the stack in reverse order, the new library version is likely to
11823 interoperate with programs that have been compiled with the old
11824 pem_password_cb definition (PEM_whatever takes some data that
11825 happens to be on the stack as its last argument, and the callback
11826 just ignores this garbage); but there is no guarantee whatsoever that
11829 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
11830 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
11831 problems not only on Windows, but also on some Unix platforms.
11832 To avoid problematic command lines, these definitions are now in an
11833 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
11834 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
11837 *) MIPS III/IV assembler module is reimplemented.
11840 *) More DES library cleanups: remove references to srand/rand and
11841 delete an unused file.
11844 *) Add support for the free Netwide assembler (NASM) under Win32,
11845 since not many people have MASM (ml) and it can be hard to obtain.
11846 This is currently experimental but it seems to work OK and pass all
11847 the tests. Check out INSTALL.W32 for info.
11850 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
11851 without temporary keys kept an extra copy of the server key,
11852 and connections with temporary keys did not free everything in case
11856 *) New function RSA_check_key and new openssl rsa option -check
11857 for verifying the consistency of RSA keys.
11858 [Ulf Moeller, Bodo Moeller]
11860 *) Various changes to make Win32 compile work:
11861 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
11862 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
11863 comparison" warnings.
11864 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
11867 *) Add a debugging option to PKCS#5 v2 key generation function: when
11868 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
11869 derived keys are printed to stderr.
11872 *) Copy the flags in ASN1_STRING_dup().
11873 [Roman E. Pavlov <pre@mo.msk.ru>]
11875 *) The x509 application mishandled signing requests containing DSA
11876 keys when the signing key was also DSA and the parameters didn't match.
11878 It was supposed to omit the parameters when they matched the signing key:
11879 the verifying software was then supposed to automatically use the CA's
11880 parameters if they were absent from the end user certificate.
11882 Omitting parameters is no longer recommended. The test was also
11883 the wrong way round! This was probably due to unusual behaviour in
11884 EVP_cmp_parameters() which returns 1 if the parameters match.
11885 This meant that parameters were omitted when they *didn't* match and
11886 the certificate was useless. Certificates signed with 'ca' didn't have
11888 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
11890 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
11891 The interface is as follows:
11892 Applications can use
11893 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
11894 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
11895 "off" is now the default.
11896 The library internally uses
11897 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
11898 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
11899 to disable memory-checking temporarily.
11901 Some inconsistent states that previously were possible (and were
11902 even the default) are now avoided.
11904 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
11905 with each memory chunk allocated; this is occasionally more helpful
11906 than just having a counter.
11908 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
11910 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
11914 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
11915 which largely parallels "options", but is for changing API behaviour,
11916 whereas "options" are about protocol behaviour.
11917 Initial "mode" flags are:
11919 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
11920 a single record has been written.
11921 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
11922 retries use the same buffer location.
11923 (But all of the contents must be
11927 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
11930 *) Fix problems with no-hmac etc.
11931 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
11933 *) New functions RSA_get_default_method(), RSA_set_method() and
11934 RSA_get_method(). These allows replacement of RSA_METHODs without having
11935 to mess around with the internals of an RSA structure.
11938 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
11939 Also really enable memory leak checks in openssl.c and in some
11941 [Chad C. Mulligan, Bodo Moeller]
11943 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
11944 up the length of negative integers. This has now been simplified to just
11945 store the length when it is first determined and use it later, rather
11946 than trying to keep track of where data is copied and updating it to
11948 [Steve Henson, reported by Brien Wheeler
11949 <bwheeler@authentica-security.com>]
11951 *) Add a new function PKCS7_signatureVerify. This allows the verification
11952 of a PKCS#7 signature but with the signing certificate passed to the
11953 function itself. This contrasts with PKCS7_dataVerify which assumes the
11954 certificate is present in the PKCS#7 structure. This isn't always the
11955 case: certificates can be omitted from a PKCS#7 structure and be
11956 distributed by "out of band" means (such as a certificate database).
11959 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
11960 function prototypes in pem.h, also change util/mkdef.pl to add the
11961 necessary function names.
11964 *) mk1mf.pl (used by Windows builds) did not properly read the
11965 options set by Configure in the top level Makefile, and Configure
11966 was not even able to write more than one option correctly.
11967 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
11970 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
11971 file to be loaded from a BIO or FILE pointer. The BIO version will
11972 for example allow memory BIOs to contain config info.
11975 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
11976 Whoever hopes to achieve shared-library compatibility across versions
11977 must use this, not the compile-time macro.
11978 (Exercise 0.9.4: Which is the minimum library version required by
11980 Note: All this applies only to multi-threaded programs, others don't
11984 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
11985 through a BIO pair triggered the default case, i.e.
11986 SSLerr(...,SSL_R_UNKNOWN_STATE).
11989 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
11990 can use the SSL library even if none of the specific BIOs is
11994 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
11995 for the encoded length.
11996 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
11998 *) Add initial documentation of the X509V3 functions.
12001 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
12002 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
12003 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
12004 secure PKCS#8 private key format with a high iteration count.
12007 *) Fix determination of Perl interpreter: A perl or perl5
12008 _directory_ in $PATH was also accepted as the interpreter.
12009 [Ralf S. Engelschall]
12011 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
12012 wrong with it but it was very old and did things like calling
12013 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
12014 unusual formatting.
12017 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
12018 to use the new extension code.
12021 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
12022 with macros. This should make it easier to change their form, add extra
12023 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
12027 *) Add to configuration table a new entry that can specify an alternative
12028 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
12029 according to Mark Crispin <MRC@Panda.COM>.
12033 *) DES CBC did not update the IV. Weird.
12036 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
12037 Changing the behaviour of the former might break existing programs --
12038 where IV updating is needed, des_ncbc_encrypt can be used.
12041 *) When bntest is run from "make test" it drives bc to check its
12042 calculations, as well as internally checking them. If an internal check
12043 fails, it needs to cause bc to give a non-zero result or make test carries
12044 on without noticing the failure. Fixed.
12047 *) DES library cleanups.
12050 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
12051 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
12052 ciphers. NOTE: although the key derivation function has been verified
12053 against some published test vectors it has not been extensively tested
12054 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
12058 *) Instead of "mkdir -p", which is not fully portable, use new
12059 Perl script "util/mkdir-p.pl".
12062 *) Rewrite the way password based encryption (PBE) is handled. It used to
12063 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
12064 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
12065 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
12066 the 'parameter' field of the AlgorithmIdentifier is passed to the
12067 underlying key generation function so it must do its own ASN1 parsing.
12068 This has also changed the EVP_PBE_CipherInit() function which now has a
12069 'parameter' argument instead of literal salt and iteration count values
12070 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
12073 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
12074 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
12075 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
12076 KEY" because this clashed with PKCS#8 unencrypted string. Since this
12077 value was just used as a "magic string" and not used directly its
12078 value doesn't matter.
12081 *) Introduce some semblance of const correctness to BN. Shame C doesn't
12085 *) "linux-sparc64" configuration (ultrapenguin).
12086 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
12087 "linux-sparc" configuration.
12088 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
12090 *) config now generates no-xxx options for missing ciphers.
12093 *) Support the EBCDIC character set (work in progress).
12094 File ebcdic.c not yet included because it has a different license.
12095 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12097 *) Support BS2000/OSD-POSIX.
12098 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12100 *) Make callbacks for key generation use void * instead of char *.
12103 *) Make S/MIME samples compile (not yet tested).
12106 *) Additional typesafe stacks.
12109 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
12113 Changes between 0.9.3 and 0.9.3a [29 May 1999]
12115 *) New configuration variant "sco5-gcc".
12117 *) Updated some demos.
12118 [Sean O Riordain, Wade Scholine]
12120 *) Add missing BIO_free at exit of pkcs12 application.
12123 *) Fix memory leak in conf.c.
12126 *) Updates for Win32 to assembler version of MD5.
12129 *) Set #! path to perl in apps/der_chop to where we found it
12130 instead of using a fixed path.
12133 *) SHA library changes for irix64-mips4-cc.
12136 *) Improvements for VMS support.
12140 Changes between 0.9.2b and 0.9.3 [24 May 1999]
12142 *) Bignum library bug fix. IRIX 6 passes "make test" now!
12143 This also avoids the problems with SC4.2 and unpatched SC5.
12144 [Andy Polyakov <appro@fy.chalmers.se>]
12146 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
12147 These are required because of the typesafe stack would otherwise break
12148 existing code. If old code used a structure member which used to be STACK
12149 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
12150 sk_num or sk_value it would produce an error because the num, data members
12151 are not present in STACK_OF. Now it just produces a warning. sk_set
12152 replaces the old method of assigning a value to sk_value
12153 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
12154 that does this will no longer work (and should use sk_set instead) but
12155 this could be regarded as a "questionable" behaviour anyway.
12158 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
12159 correctly handle encrypted S/MIME data.
12162 *) Change type of various DES function arguments from des_cblock
12163 (which means, in function argument declarations, pointer to char)
12164 to des_cblock * (meaning pointer to array with 8 char elements),
12165 which allows the compiler to do more typechecking; it was like
12166 that back in SSLeay, but with lots of ugly casts.
12168 Introduce new type const_des_cblock.
12171 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
12172 problems: find RecipientInfo structure that matches recipient certificate
12173 and initialise the ASN1 structures properly based on passed cipher.
12176 *) Belatedly make the BN tests actually check the results.
12179 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
12180 to and from BNs: it was completely broken. New compilation option
12181 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
12182 key elements as negative integers.
12185 *) Reorganize and speed up MD5.
12186 [Andy Polyakov <appro@fy.chalmers.se>]
12189 [Richard Levitte <richard@levitte.org>]
12191 *) New option -out to asn1parse to allow the parsed structure to be
12192 output to a file. This is most useful when combined with the -strparse
12193 option to examine the output of things like OCTET STRINGS.
12196 *) Make SSL library a little more fool-proof by not requiring any longer
12197 that SSL_set_{accept,connect}_state be called before
12198 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
12199 in many applications because usually everything *appeared* to work as
12200 intended anyway -- now it really works as intended).
12203 *) Move openssl.cnf out of lib/.
12206 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
12207 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
12208 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
12209 [Ralf S. Engelschall]
12211 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
12212 handle PKCS#7 enveloped data properly.
12213 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
12215 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
12216 copying pointers. The cert_st handling is changed by this in
12217 various ways (and thus what used to be known as ctx->default_cert
12218 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
12219 any longer when s->cert does not give us what we need).
12220 ssl_cert_instantiate becomes obsolete by this change.
12221 As soon as we've got the new code right (possibly it already is?),
12222 we have solved a couple of bugs of the earlier code where s->cert
12223 was used as if it could not have been shared with other SSL structures.
12225 Note that using the SSL API in certain dirty ways now will result
12226 in different behaviour than observed with earlier library versions:
12227 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
12228 does not influence s as it used to.
12230 In order to clean up things more thoroughly, inside SSL_SESSION
12231 we don't use CERT any longer, but a new structure SESS_CERT
12232 that holds per-session data (if available); currently, this is
12233 the peer's certificate chain and, for clients, the server's certificate
12234 and temporary key. CERT holds only those values that can have
12235 meaningful defaults in an SSL_CTX.
12238 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
12239 from the internal representation. Various PKCS#7 fixes: remove some
12240 evil casts and set the enc_dig_alg field properly based on the signing
12244 *) Allow PKCS#12 password to be set from the command line or the
12245 environment. Let 'ca' get its config file name from the environment
12246 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
12250 *) Allow certificate policies extension to use an IA5STRING for the
12251 organization field. This is contrary to the PKIX definition but
12252 VeriSign uses it and IE5 only recognises this form. Document 'x509'
12256 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
12257 without disallowing inline assembler and the like for non-pedantic builds.
12260 *) Support Borland C++ builder.
12261 [Janez Jere <jj@void.si>, modified by Ulf Möller]
12263 *) Support Mingw32.
12266 *) SHA-1 cleanups and performance enhancements.
12267 [Andy Polyakov <appro@fy.chalmers.se>]
12269 *) Sparc v8plus assembler for the bignum library.
12270 [Andy Polyakov <appro@fy.chalmers.se>]
12272 *) Accept any -xxx and +xxx compiler options in Configure.
12275 *) Update HPUX configuration.
12278 *) Add missing sk_<type>_unshift() function to safestack.h
12279 [Ralf S. Engelschall]
12281 *) New function SSL_CTX_use_certificate_chain_file that sets the
12282 "extra_cert"s in addition to the certificate. (This makes sense
12283 only for "PEM" format files, as chains as a whole are not
12287 *) Support verify_depth from the SSL API.
12288 x509_vfy.c had what can be considered an off-by-one-error:
12289 Its depth (which was not part of the external interface)
12290 was actually counting the number of certificates in a chain;
12291 now it really counts the depth.
12294 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
12295 instead of X509err, which often resulted in confusing error
12296 messages since the error codes are not globally unique
12297 (e.g. an alleged error in ssl3_accept when a certificate
12298 didn't match the private key).
12300 *) New function SSL_CTX_set_session_id_context that allows to set a default
12301 value (so that you don't need SSL_set_session_id_context for each
12302 connection using the SSL_CTX).
12305 *) OAEP decoding bug fix.
12308 *) Support INSTALL_PREFIX for package builders, as proposed by
12312 *) New Configure options "threads" and "no-threads". For systems
12313 where the proper compiler options are known (currently Solaris
12314 and Linux), "threads" is the default.
12317 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
12320 *) Install various scripts to $(OPENSSLDIR)/misc, not to
12321 $(INSTALLTOP)/bin -- they shouldn't clutter directories
12322 such as /usr/local/bin.
12325 *) "make linux-shared" to build shared libraries.
12326 [Niels Poppe <niels@netbox.org>]
12328 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
12331 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
12332 extension adding in x509 utility.
12335 *) Remove NOPROTO sections and error code comments.
12338 *) Partial rewrite of the DEF file generator to now parse the ANSI
12342 *) New Configure options --prefix=DIR and --openssldir=DIR.
12345 *) Complete rewrite of the error code script(s). It is all now handled
12346 by one script at the top level which handles error code gathering,
12347 header rewriting and C source file generation. It should be much better
12348 than the old method: it now uses a modified version of Ulf's parser to
12349 read the ANSI prototypes in all header files (thus the old K&R definitions
12350 aren't needed for error creation any more) and do a better job of
12351 translating function codes into names. The old 'ASN1 error code imbedded
12352 in a comment' is no longer necessary and it doesn't use .err files which
12353 have now been deleted. Also the error code call doesn't have to appear all
12354 on one line (which resulted in some large lines...).
12357 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
12360 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
12361 0 (which usually indicates a closed connection), but continue reading.
12364 *) Fix some race conditions.
12367 *) Add support for CRL distribution points extension. Add Certificate
12368 Policies and CRL distribution points documentation.
12371 *) Move the autogenerated header file parts to crypto/opensslconf.h.
12374 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
12375 8 of keying material. Merlin has also confirmed interop with this fix
12376 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
12377 [Merlin Hughes <merlin@baltimore.ie>]
12379 *) Fix lots of warnings.
12380 [Richard Levitte <levitte@stacken.kth.se>]
12382 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
12383 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
12384 [Richard Levitte <levitte@stacken.kth.se>]
12386 *) Fix problems with sizeof(long) == 8.
12387 [Andy Polyakov <appro@fy.chalmers.se>]
12389 *) Change functions to ANSI C.
12392 *) Fix typos in error codes.
12393 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
12395 *) Remove defunct assembler files from Configure.
12398 *) SPARC v8 assembler BIGNUM implementation.
12399 [Andy Polyakov <appro@fy.chalmers.se>]
12401 *) Support for Certificate Policies extension: both print and set.
12402 Various additions to support the r2i method this uses.
12405 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
12406 return a const string when you are expecting an allocated buffer.
12409 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
12410 types DirectoryString and DisplayText.
12413 *) Add code to allow r2i extensions to access the configuration database,
12414 add an LHASH database driver and add several ctx helper functions.
12417 *) Fix an evil bug in bn_expand2() which caused various BN functions to
12418 fail when they extended the size of a BIGNUM.
12421 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
12422 support typesafe stack.
12425 *) Fix typo in SSL_[gs]et_options().
12426 [Nils Frostberg <nils@medcom.se>]
12428 *) Delete various functions and files that belonged to the (now obsolete)
12429 old X509V3 handling code.
12432 *) New Configure option "rsaref".
12435 *) Don't auto-generate pem.h.
12438 *) Introduce type-safe ASN.1 SETs.
12441 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
12442 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
12444 *) Introduce type-safe STACKs. This will almost certainly break lots of code
12445 that links with OpenSSL (well at least cause lots of warnings), but fear
12446 not: the conversion is trivial, and it eliminates loads of evil casts. A
12447 few STACKed things have been converted already. Feel free to convert more.
12448 In the fullness of time, I'll do away with the STACK type altogether.
12451 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
12452 specified in <certfile> by updating the entry in the index.txt file.
12453 This way one no longer has to edit the index.txt file manually for
12454 revoking a certificate. The -revoke option does the gory details now.
12455 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
12457 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
12458 `-text' option at all and this way the `-noout -text' combination was
12459 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
12460 [Ralf S. Engelschall]
12462 *) Make sure a corresponding plain text error message exists for the
12463 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
12464 verify callback function determined that a certificate was revoked.
12465 [Ralf S. Engelschall]
12467 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
12468 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
12469 all available ciphers including rc5, which was forgotten until now.
12470 In order to let the testing shell script know which algorithms
12471 are available, a new (up to now undocumented) command
12472 "openssl list-cipher-commands" is used.
12475 *) Bugfix: s_client occasionally would sleep in select() when
12476 it should have checked SSL_pending() first.
12479 *) New functions DSA_do_sign and DSA_do_verify to provide access to
12480 the raw DSA values prior to ASN.1 encoding.
12483 *) Tweaks to Configure
12484 [Niels Poppe <niels@netbox.org>]
12486 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
12490 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
12493 *) New config option to avoid instructions that are illegal on the 80386.
12494 The default code is faster, but requires at least a 486.
12497 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
12498 SSL2_SERVER_VERSION (not used at all) macros, which are now the
12499 same as SSL2_VERSION anyway.
12502 *) New "-showcerts" option for s_client.
12505 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
12506 application. Various cleanups and fixes.
12509 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
12510 modify error routines to work internally. Add error codes and PBE init
12511 to library startup routines.
12514 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
12515 packing functions to asn1 and evp. Changed function names and error
12516 codes along the way.
12519 *) PKCS12 integration: and so it begins... First of several patches to
12520 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
12521 objects to objects.h
12524 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
12525 and display support for Thawte strong extranet extension.
12528 *) Add LinuxPPC support.
12529 [Jeff Dubrule <igor@pobox.org>]
12531 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
12532 bn_div_words in alpha.s.
12533 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
12535 *) Make sure the RSA OAEP test is skipped under -DRSAref because
12536 OAEP isn't supported when OpenSSL is built with RSAref.
12537 [Ulf Moeller <ulf@fitug.de>]
12539 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
12540 so they no longer are missing under -DNOPROTO.
12541 [Soren S. Jorvang <soren@t.dk>]
12544 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
12546 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
12547 doesn't work when the session is reused. Coming soon!
12550 *) Fix a security hole, that allows sessions to be reused in the wrong
12551 context thus bypassing client cert protection! All software that uses
12552 client certs and session caches in multiple contexts NEEDS PATCHING to
12553 allow session reuse! A fuller solution is in the works.
12554 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
12556 *) Some more source tree cleanups (removed obsolete files
12557 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
12558 permission on "config" script to be executable) and a fix for the INSTALL
12560 [Ulf Moeller <ulf@fitug.de>]
12562 *) Remove some legacy and erroneous uses of malloc, free instead of
12564 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
12566 *) Make rsa_oaep_test return non-zero on error.
12567 [Ulf Moeller <ulf@fitug.de>]
12569 *) Add support for native Solaris shared libraries. Configure
12570 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
12571 if someone would make that last step automatic.
12572 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
12574 *) ctx_size was not built with the right compiler during "make links". Fixed.
12577 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
12578 except NULL ciphers". This means the default cipher list will no longer
12579 enable NULL ciphers. They need to be specifically enabled e.g. with
12580 the string "DEFAULT:eNULL".
12583 *) Fix to RSA private encryption routines: if p < q then it would
12584 occasionally produce an invalid result. This will only happen with
12585 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
12588 *) Be less restrictive and allow also `perl util/perlpath.pl
12589 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
12590 because this way one can also use an interpreter named `perl5' (which is
12591 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
12592 installed as `perl').
12593 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12595 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
12596 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12598 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
12599 advapi32.lib to Win32 build and change the pem test comparison
12600 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
12601 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
12602 and crypto/des/ede_cbcm_enc.c.
12605 *) DES quad checksum was broken on big-endian architectures. Fixed.
12608 *) Comment out two functions in bio.h that aren't implemented. Fix up the
12609 Win32 test batch file so it (might) work again. The Win32 test batch file
12610 is horrible: I feel ill....
12613 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
12614 in e_os.h. Audit of header files to check ANSI and non ANSI
12615 sections: 10 functions were absent from non ANSI section and not exported
12616 from Windows DLLs. Fixed up libeay.num for new functions.
12619 *) Make `openssl version' output lines consistent.
12620 [Ralf S. Engelschall]
12622 *) Fix Win32 symbol export lists for BIO functions: Added
12623 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
12624 to ms/libeay{16,32}.def.
12625 [Ralf S. Engelschall]
12627 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
12628 fine under Unix and passes some trivial tests I've now added. But the
12629 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
12630 added to make sure no one expects that this stuff really works in the
12631 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
12632 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
12634 [Ralf S. Engelschall]
12636 *) Fix the generation of two part addresses in perl.
12637 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
12639 *) Add config entry for Linux on MIPS.
12640 [John Tobey <jtobey@channel1.com>]
12642 *) Make links whenever Configure is run, unless we are on Windoze.
12645 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
12646 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
12650 *) Add a useful kludge to allow package maintainers to specify compiler and
12651 other platforms details on the command line without having to patch the
12652 Configure script everytime: One now can use ``perl Configure
12653 <id>:<details>'', i.e. platform ids are allowed to have details appended
12654 to them (separated by colons). This is treated as there would be a static
12655 pre-configured entry in Configure's %table under key <id> with value
12656 <details> and ``perl Configure <id>'' is called. So, when you want to
12657 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
12658 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
12659 now, which overrides the FreeBSD-elf entry on-the-fly.
12660 [Ralf S. Engelschall]
12662 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
12665 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
12666 on the `perl Configure ...' command line. This way one can compile
12667 OpenSSL libraries with Position Independent Code (PIC) which is needed
12668 for linking it into DSOs.
12669 [Ralf S. Engelschall]
12671 *) Remarkably, export ciphers were totally broken and no-one had noticed!
12675 *) Cleaned up the LICENSE document: The official contact for any license
12676 questions now is the OpenSSL core team under openssl-core@openssl.org.
12677 And add a paragraph about the dual-license situation to make sure people
12678 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
12679 to the OpenSSL toolkit.
12680 [Ralf S. Engelschall]
12682 *) General source tree makefile cleanups: Made `making xxx in yyy...'
12683 display consistent in the source tree and replaced `/bin/rm' by `rm'.
12684 Additionally cleaned up the `make links' target: Remove unnecessary
12685 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
12686 to speed processing and no longer clutter the display with confusing
12687 stuff. Instead only the actually done links are displayed.
12688 [Ralf S. Engelschall]
12690 *) Permit null encryption ciphersuites, used for authentication only. It used
12691 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
12692 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
12696 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
12697 signed attributes when verifying signatures (this would break them),
12698 the detached data encoding was wrong and public keys obtained using
12699 X509_get_pubkey() weren't freed.
12702 *) Add text documentation for the BUFFER functions. Also added a work around
12703 to a Win95 console bug. This was triggered by the password read stuff: the
12704 last character typed gets carried over to the next fread(). If you were
12705 generating a new cert request using 'req' for example then the last
12706 character of the passphrase would be CR which would then enter the first
12710 *) Added the new `Includes OpenSSL Cryptography Software' button as
12711 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
12712 button and can be used by applications based on OpenSSL to show the
12713 relationship to the OpenSSL project.
12714 [Ralf S. Engelschall]
12716 *) Remove confusing variables in function signatures in files
12717 ssl/ssl_lib.c and ssl/ssl.h.
12718 [Lennart Bong <lob@kulthea.stacken.kth.se>]
12720 *) Don't install bss_file.c under PREFIX/include/
12721 [Lennart Bong <lob@kulthea.stacken.kth.se>]
12723 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
12724 functions that return function pointers and has support for NT specific
12725 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
12726 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
12727 unsigned to signed types: this was killing the Win32 compile.
12730 *) Add new certificate file to stack functions,
12731 SSL_add_dir_cert_subjects_to_stack() and
12732 SSL_add_file_cert_subjects_to_stack(). These largely supplant
12733 SSL_load_client_CA_file(), and can be used to add multiple certs easily
12734 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
12735 This means that Apache-SSL and similar packages don't have to mess around
12736 to add as many CAs as they want to the preferred list.
12739 *) Experiment with doxygen documentation. Currently only partially applied to
12741 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
12742 openssl.doxy as the configuration file.
12745 *) Get rid of remaining C++-style comments which strict C compilers hate.
12746 [Ralf S. Engelschall, pointed out by Carlos Amengual]
12748 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
12749 compiled in by default: it has problems with large keys.
12752 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
12753 DH private keys and/or callback functions which directly correspond to
12754 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
12755 is needed for applications which have to configure certificates on a
12756 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
12758 For the RSA certificate situation is makes no difference, but
12759 for the DSA certificate situation this fixes the "no shared cipher"
12760 problem where the OpenSSL cipher selection procedure failed because the
12761 temporary keys were not overtaken from the context and the API provided
12762 no way to reconfigure them.
12763 The new functions now let applications reconfigure the stuff and they
12764 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
12765 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
12766 non-public-API function ssl_cert_instantiate() is used as a helper
12767 function and also to reduce code redundancy inside ssl_rsa.c.
12768 [Ralf S. Engelschall]
12770 *) Move s_server -dcert and -dkey options out of the undocumented feature
12771 area because they are useful for the DSA situation and should be
12772 recognized by the users.
12773 [Ralf S. Engelschall]
12775 *) Fix the cipher decision scheme for export ciphers: the export bits are
12776 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
12777 SSL_EXP_MASK. So, the original variable has to be used instead of the
12778 already masked variable.
12779 [Richard Levitte <levitte@stacken.kth.se>]
12781 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
12782 [Richard Levitte <levitte@stacken.kth.se>]
12784 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
12785 from `int' to `unsigned int' because it's a length and initialized by
12786 EVP_DigestFinal() which expects an `unsigned int *'.
12787 [Richard Levitte <levitte@stacken.kth.se>]
12789 *) Don't hard-code path to Perl interpreter on shebang line of Configure
12790 script. Instead use the usual Shell->Perl transition trick.
12791 [Ralf S. Engelschall]
12793 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
12794 (in addition to RSA certificates) to match the behaviour of `openssl dsa
12795 -noout -modulus' as it's already the case for `openssl rsa -noout
12796 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
12797 currently the public key is printed (a decision which was already done by
12798 `openssl dsa -modulus' in the past) which serves a similar purpose.
12799 Additionally the NO_RSA no longer completely removes the whole -modulus
12800 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
12802 [Ralf S. Engelschall]
12804 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
12805 BIO. See the source (crypto/evp/bio_ok.c) for more info.
12806 [Arne Ansper <arne@ats.cyber.ee>]
12808 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
12809 to be added. Now both 'req' and 'ca' can use new objects defined in the
12813 *) Add cool BIO that does syslog (or event log on NT).
12814 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
12816 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
12817 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
12818 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
12819 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
12822 *) Add preliminary config info for new extension code.
12825 *) Make RSA_NO_PADDING really use no padding.
12826 [Ulf Moeller <ulf@fitug.de>]
12828 *) Generate errors when private/public key check is done.
12831 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
12832 for some CRL extensions and new objects added.
12835 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
12836 key usage extension and fuller support for authority key id.
12839 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
12840 padding method for RSA, which is recommended for new applications in PKCS
12841 #1 v2.0 (RFC 2437, October 1998).
12842 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
12843 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
12844 against Bleichbacher's attack on RSA.
12845 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
12848 *) Updates to the new SSL compression code
12849 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12851 *) Fix so that the version number in the master secret, when passed
12852 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
12853 (because the server will not accept higher), that the version number
12854 is 0x03,0x01, not 0x03,0x00
12855 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12857 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
12858 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
12859 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
12862 *) Support for RAW extensions where an arbitrary extension can be
12863 created by including its DER encoding. See apps/openssl.cnf for
12867 *) Make sure latest Perl versions don't interpret some generated C array
12868 code as Perl array code in the crypto/err/err_genc.pl script.
12869 [Lars Weber <3weber@informatik.uni-hamburg.de>]
12871 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
12872 not many people have the assembler. Various Win32 compilation fixes and
12873 update to the INSTALL.W32 file with (hopefully) more accurate Win32
12874 build instructions.
12877 *) Modify configure script 'Configure' to automatically create crypto/date.h
12878 file under Win32 and also build pem.h from pem.org. New script
12879 util/mkfiles.pl to create the MINFO file on environments that can't do a
12880 'make files': perl util/mkfiles.pl >MINFO should work.
12883 *) Major rework of DES function declarations, in the pursuit of correctness
12884 and purity. As a result, many evil casts evaporated, and some weirdness,
12885 too. You may find this causes warnings in your code. Zapping your evil
12886 casts will probably fix them. Mostly.
12889 *) Fix for a typo in asn1.h. Bug fix to object creation script
12890 obj_dat.pl. It considered a zero in an object definition to mean
12891 "end of object": none of the objects in objects.h have any zeros
12892 so it wasn't spotted.
12893 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
12895 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
12896 Masking (CBCM). In the absence of test vectors, the best I have been able
12897 to do is check that the decrypt undoes the encrypt, so far. Send me test
12898 vectors if you have them.
12901 *) Correct calculation of key length for export ciphers (too much space was
12902 allocated for null ciphers). This has not been tested!
12905 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
12906 message is now correct (it understands "crypto" and "ssl" on its
12907 command line). There is also now an "update" option. This will update
12908 the util/ssleay.num and util/libeay.num files with any new functions.
12910 perl util/mkdef.pl crypto ssl update
12911 it will update them.
12914 *) Overhauled the Perl interface (perl/*):
12915 - ported BN stuff to OpenSSL's different BN library
12916 - made the perl/ source tree CVS-aware
12917 - renamed the package from SSLeay to OpenSSL (the files still contain
12918 their history because I've copied them in the repository)
12919 - removed obsolete files (the test scripts will be replaced
12920 by better Test::Harness variants in the future)
12921 [Ralf S. Engelschall]
12923 *) First cut for a very conservative source tree cleanup:
12924 1. merge various obsolete readme texts into doc/ssleay.txt
12925 where we collect the old documents and readme texts.
12926 2. remove the first part of files where I'm already sure that we no
12927 longer need them because of three reasons: either they are just temporary
12928 files which were left by Eric or they are preserved original files where
12929 I've verified that the diff is also available in the CVS via "cvs diff
12930 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
12931 the crypto/md/ stuff).
12932 [Ralf S. Engelschall]
12934 *) More extension code. Incomplete support for subject and issuer alt
12935 name, issuer and authority key id. Change the i2v function parameters
12936 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
12937 what that's for :-) Fix to ASN1 macro which messed up
12938 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
12941 *) Preliminary support for ENUMERATED type. This is largely copied from the
12945 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
12946 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12948 *) Make sure `make rehash' target really finds the `openssl' program.
12949 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12951 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
12952 like to hear about it if this slows down other processors.
12955 *) Add CygWin32 platform information to Configure script.
12956 [Alan Batie <batie@aahz.jf.intel.com>]
12958 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
12959 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
12961 *) New program nseq to manipulate netscape certificate sequences
12964 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
12968 *) Fixes to BN code. Previously the default was to define BN_RECURSION
12969 but the BN code had some problems that would cause failures when
12970 doing certificate verification and some other functions.
12971 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12973 *) Add ASN1 and PEM code to support netscape certificate sequences.
12976 *) Add ASN1 and PEM code to support netscape certificate sequences.
12979 *) Add several PKIX and private extended key usage OIDs.
12982 *) Modify the 'ca' program to handle the new extension code. Modify
12983 openssl.cnf for new extension format, add comments.
12986 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
12987 and add a sample to openssl.cnf so req -x509 now adds appropriate
12991 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
12992 error code, add initial support to X509_print() and x509 application.
12995 *) Takes a deep breath and start adding X509 V3 extension support code. Add
12996 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
12997 stuff is currently isolated and isn't even compiled yet.
13000 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
13001 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
13002 Removed the versions check from X509 routines when loading extensions:
13003 this allows certain broken certificates that don't set the version
13004 properly to be processed.
13007 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
13008 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
13009 can still be regenerated with "make depend".
13012 *) Spelling mistake in C version of CAST-128.
13013 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
13015 *) Changes to the error generation code. The perl script err-code.pl
13016 now reads in the old error codes and retains the old numbers, only
13017 adding new ones if necessary. It also only changes the .err files if new
13018 codes are added. The makefiles have been modified to only insert errors
13019 when needed (to avoid needlessly modifying header files). This is done
13020 by only inserting errors if the .err file is newer than the auto generated
13021 C file. To rebuild all the error codes from scratch (the old behaviour)
13022 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
13023 or delete all the .err files.
13026 *) CAST-128 was incorrectly implemented for short keys. The C version has
13027 been fixed, but is untested. The assembler versions are also fixed, but
13028 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
13029 to regenerate it if needed.
13030 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
13031 Hagino <itojun@kame.net>]
13033 *) File was opened incorrectly in randfile.c.
13034 [Ulf Möller <ulf@fitug.de>]
13036 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
13037 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
13038 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
13039 al: it's just almost always a UTCTime. Note this patch adds new error
13040 codes so do a "make errors" if there are problems.
13043 *) Correct Linux 1 recognition in config.
13044 [Ulf Möller <ulf@fitug.de>]
13046 *) Remove pointless MD5 hash when using DSA keys in ca.
13047 [Anonymous <nobody@replay.com>]
13049 *) Generate an error if given an empty string as a cert directory. Also
13050 generate an error if handed NULL (previously returned 0 to indicate an
13051 error, but didn't set one).
13052 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
13054 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
13057 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
13058 parameters. This was causing a warning which killed off the Win32 compile.
13061 *) Remove C++ style comments from crypto/bn/bn_local.h.
13062 [Neil Costigan <neil.costigan@celocom.com>]
13064 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
13065 based on a text string, looking up short and long names and finally
13066 "dot" format. The "dot" format stuff didn't work. Added new function
13067 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
13068 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
13069 OID is not part of the table.
13072 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
13073 X509_LOOKUP_by_alias().
13076 *) Sort openssl functions by name.
13079 *) Get the gendsa program working (hopefully) and add it to app list. Remove
13080 encryption from sample DSA keys (in case anyone is interested the password
13084 *) Make _all_ *_free functions accept a NULL pointer.
13085 [Frans Heymans <fheymans@isaserver.be>]
13087 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
13089 [Anonymous <nobody@replay.com>]
13091 *) s_server should send the CAfile as acceptable CAs, not its own cert.
13092 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13094 *) Don't blow it for numeric -newkey arguments to apps/req.
13095 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13097 *) Temp key "for export" tests were wrong in s3_srvr.c.
13098 [Anonymous <nobody@replay.com>]
13100 *) Add prototype for temp key callback functions
13101 SSL_CTX_set_tmp_{rsa,dh}_callback().
13104 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
13105 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
13108 *) X509_name_add_entry() freed the wrong thing after an error.
13109 [Arne Ansper <arne@ats.cyber.ee>]
13111 *) rsa_eay.c would attempt to free a NULL context.
13112 [Arne Ansper <arne@ats.cyber.ee>]
13114 *) BIO_s_socket() had a broken should_retry() on Windoze.
13115 [Arne Ansper <arne@ats.cyber.ee>]
13117 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
13118 [Arne Ansper <arne@ats.cyber.ee>]
13120 *) Make sure the already existing X509_STORE->depth variable is initialized
13121 in X509_STORE_new(), but document the fact that this variable is still
13122 unused in the certificate verification process.
13123 [Ralf S. Engelschall]
13125 *) Fix the various library and apps files to free up pkeys obtained from
13126 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
13129 *) Fix reference counting in X509_PUBKEY_get(). This makes
13130 demos/maurice/example2.c work, amongst others, probably.
13131 [Steve Henson and Ben Laurie]
13133 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
13134 `openssl' and second, the shortcut symlinks for the `openssl <command>'
13135 are no longer created. This way we have a single and consistent command
13136 line interface `openssl <command>', similar to `cvs <command>'.
13137 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
13139 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
13140 BIT STRING wrapper always have zero unused bits.
13143 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
13146 *) Make the top-level INSTALL documentation easier to understand.
13149 *) Makefiles updated to exit if an error occurs in a sub-directory
13150 make (including if user presses ^C) [Paul Sutton]
13152 *) Make Montgomery context stuff explicit in RSA data structure.
13155 *) Fix build order of pem and err to allow for generated pem.h.
13158 *) Fix renumbering bug in X509_NAME_delete_entry().
13161 *) Enhanced the err-ins.pl script so it makes the error library number
13162 global and can add a library name. This is needed for external ASN1 and
13163 other error libraries.
13166 *) Fixed sk_insert which never worked properly.
13169 *) Fix ASN1 macros so they can handle indefinite length constructed
13170 EXPLICIT tags. Some non standard certificates use these: they can now
13174 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
13175 into a single doc/ssleay.txt bundle. This way the information is still
13176 preserved but no longer messes up this directory. Now it's new room for
13177 the new set of documentation files.
13178 [Ralf S. Engelschall]
13180 *) SETs were incorrectly DER encoded. This was a major pain, because they
13181 shared code with SEQUENCEs, which aren't coded the same. This means that
13182 almost everything to do with SETs or SEQUENCEs has either changed name or
13183 number of arguments.
13184 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
13186 *) Fix test data to work with the above.
13189 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
13190 was already fixed by Eric for 0.9.1 it seems.
13191 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
13193 *) Autodetect FreeBSD3.
13196 *) Fix various bugs in Configure. This affects the following platforms:
13200 unixware-2.0-pentium
13204 *) Eliminate generated files from CVS. Reorder tests to regenerate files
13205 before they are needed.
13208 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
13212 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
13214 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
13215 changed SSLeay to OpenSSL in version strings.
13216 [Ralf S. Engelschall]
13218 *) Some fixups to the top-level documents.
13221 *) Fixed the nasty bug where rsaref.h was not found under compile-time
13222 because the symlink to include/ was missing.
13223 [Ralf S. Engelschall]
13225 *) Incorporated the popular no-RSA/DSA-only patches
13226 which allow to compile a RSA-free SSLeay.
13227 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
13229 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
13230 when "ssleay" is still not found.
13231 [Ralf S. Engelschall]
13233 *) Added more platforms to Configure: Cray T3E, HPUX 11,
13234 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
13236 *) Updated the README file.
13237 [Ralf S. Engelschall]
13239 *) Added various .cvsignore files in the CVS repository subdirs
13240 to make a "cvs update" really silent.
13241 [Ralf S. Engelschall]
13243 *) Recompiled the error-definition header files and added
13244 missing symbols to the Win32 linker tables.
13245 [Ralf S. Engelschall]
13247 *) Cleaned up the top-level documents;
13248 o new files: CHANGES and LICENSE
13249 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
13250 o merged COPYRIGHT into LICENSE
13251 o removed obsolete TODO file
13252 o renamed MICROSOFT to INSTALL.W32
13253 [Ralf S. Engelschall]
13255 *) Removed dummy files from the 0.9.1b source tree:
13256 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
13257 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
13258 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
13259 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
13260 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
13261 [Ralf S. Engelschall]
13263 *) Added various platform portability fixes.
13266 *) The Genesis of the OpenSSL rpject:
13267 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
13268 Young and Tim J. Hudson created while they were working for C2Net until
13270 [The OpenSSL Project]
13273 Changes between 0.9.0b and 0.9.1b [not released]
13275 *) Updated a few CA certificates under certs/
13278 *) Changed some BIGNUM api stuff.
13281 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
13282 DGUX x86, Linux Alpha, etc.
13285 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
13286 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
13290 *) Add -strparse option to asn1pars program which parses nested
13292 [Dr Stephen Henson <shenson@bigfoot.com>]
13294 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
13297 *) DSA fix for "ca" program.
13300 *) Added "-genkey" option to "dsaparam" program.
13303 *) Added RIPE MD160 (rmd160) message digest.
13306 *) Added -a (all) option to "ssleay version" command.
13309 *) Added PLATFORM define which is the id given to Configure.
13312 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
13315 *) Extended the ASN.1 parser routines.
13318 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
13321 *) Added a BN_CTX to the BN library.
13324 *) Fixed the weak key values in DES library
13327 *) Changed API in EVP library for cipher aliases.
13330 *) Added support for RC2/64bit cipher.
13333 *) Converted the lhash library to the crypto/mem.c functions.
13336 *) Added more recognized ASN.1 object ids.
13339 *) Added more RSA padding checks for SSL/TLS.
13342 *) Added BIO proxy/filter functionality.
13345 *) Added extra_certs to SSL_CTX which can be used
13346 send extra CA certificates to the client in the CA cert chain sending
13347 process. It can be configured with SSL_CTX_add_extra_chain_cert().
13350 *) Now Fortezza is denied in the authentication phase because
13351 this is key exchange mechanism is not supported by SSLeay at all.
13354 *) Additional PKCS1 checks.
13357 *) Support the string "TLSv1" for all TLS v1 ciphers.
13360 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
13361 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
13364 *) Fixed a few memory leaks.
13367 *) Fixed various code and comment typos.
13370 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
13371 bytes sent in the client random.
13372 [Edward Bishop <ebishop@spyglass.com>]