5 Changes between 1.0.1 and 1.0.2 [xx XXX xxxx]
7 *) New function SSL_certs_clear() to delete all references to certificates
8 from an SSL structure. Before this once a certificate had been added
9 it couldn't be removed.
12 *) Integrate hostname, email address and IP address checking with certificate
13 verification. New verify options supporting checking in opensl utility.
16 *) Fixes and wildcard matching support to hostname and email checking
17 functions. Add manual page.
18 [Florian Weimer (Red Hat Product Security Team)]
20 *) New functions to check a hostname email or IP address against a
21 certificate. Add options x509 utility to print results of checks against
26 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
28 *) Backport support for partial chain verification: if an intermediate
29 certificate is explicitly trusted (using -addtrust option to x509
30 utility for example) the verification is sucessful even if the chain
32 The OCSP checking fix depends on this backport.
33 [Steve Henson and Rob Stradling <rob.stradling@comodo.com>]
35 *) Add -trusted_first option which attempts to find certificates in the
36 trusted store even if an untrusted chain is also supplied.
39 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
40 platform support for Linux and Android.
43 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
44 the right response is stapled. Also change current certificate to
45 the certificate actually sent.
46 See http://rt.openssl.org/Ticket/Display.html?id=2836.
47 [Rob Stradling <rob.stradling@comodo.com>]
49 *) Support for linux-x32, ILP32 environment in x86_64 framework.
53 [Emilia Kasper, Adam Langley, Ben Laurie (Google)]
55 *) Experimental multi-implementation support for FIPS capable OpenSSL.
56 When in FIPS mode the approved implementations are used as normal,
57 when not in FIPS mode the internal unapproved versions are used instead.
58 This means that the FIPS capable OpenSSL isn't forced to use the
59 (often lower perfomance) FIPS implementations outside FIPS mode.
62 *) Transparently support X9.42 DH parameters when calling
63 PEM_read_bio_DHparameters. This means existing applications can handle
64 the new parameter format automatically.
67 *) Initial experimental support for X9.42 DH parameter format: mainly
68 to support use of 'q' parameter for RFC5114 parameters.
71 *) Add DH parameters from RFC5114 including test data to dhtest.
74 *) Support for automatic EC temporary key parameter selection. If enabled
75 the most preferred EC parameters are automatically used instead of
76 hardcoded fixed parameters. Now a server just has to call:
77 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
78 support ECDH and use the most appropriate parameters.
81 *) Enhance and tidy EC curve and point format TLS extension code. Use
82 static structures instead of allocation if default values are used.
83 New ctrls to set curves we wish to support and to retrieve shared curves.
84 Print out shared curves in s_server. New options to s_server and s_client
85 to set list of supported curves.
88 *) New ctrls to retrieve supported signature algorithms and
89 supported curve values as an array of NIDs. Extend openssl utility
90 to print out received values.
93 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
94 between NIDs and the more common NIST names such as "P-256". Enhance
95 ecparam utility and ECC method to recognise the NIST names for curves.
98 *) Enhance SSL/TLS certificate chain handling to support different
99 chains for each certificate instead of one chain in the parent SSL_CTX.
102 *) Support for fixed DH ciphersuite client authentication: where both
103 server and client use DH certificates with common parameters.
106 *) Support for fixed DH ciphersuites: those requiring DH server
110 Changes between 1.0.1c and 1.0.1d [xx XXX xxxx]
112 *) Make openssl verify return errors.
113 [Chris Palmer <palmer@google.com> and Ben Laurie]
115 *) Fix possible deadlock when decoding public keys.
118 *) Don't use TLS 1.0 record version number in initial client hello
122 Changes between 1.0.1b and 1.0.1c [10 May 2012]
124 *) Sanity check record length before skipping explicit IV in TLS
125 1.2, 1.1 and DTLS to avoid DoS attack.
127 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
128 fuzzing as a service testing platform.
132 *) Initialise tkeylen properly when encrypting CMS messages.
133 Thanks to Solar Designer of Openwall for reporting this issue.
136 *) In FIPS mode don't try to use composite ciphers as they are not
140 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
142 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
143 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
144 mean any application compiled against OpenSSL 1.0.0 headers setting
145 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
146 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
147 0x10000000L Any application which was previously compiled against
148 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
149 will need to be recompiled as a result. Letting be results in
150 inability to disable specifically TLS 1.1 and in client context,
151 in unlike event, limit maximum offered version to TLS 1.0 [see below].
154 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
155 disable just protocol X, but all protocols above X *if* there are
156 protocols *below* X still enabled. In more practical terms it means
157 that if application wants to disable TLS1.0 in favor of TLS1.1 and
158 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
159 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
163 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
165 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
166 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
167 in CRYPTO_realloc_clean.
169 Thanks to Tavis Ormandy, Google Security Team, for discovering this
170 issue and to Adam Langley <agl@chromium.org> for fixing it.
172 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
174 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
177 *) Workarounds for some broken servers that "hang" if a client hello
178 record length exceeds 255 bytes:
180 1. Do not use record version number > TLS 1.0 in initial client
181 hello: some (but not all) hanging servers will now work.
182 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
183 the number of ciphers sent in the client hello. This should be
184 set to an even number, such as 50, for example by passing:
185 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
186 Most broken servers should now work.
187 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
188 TLS 1.2 client support entirely.
191 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
194 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
196 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
197 STRING form instead of a DigestInfo.
200 *) The format used for MDC2 RSA signatures is inconsistent between EVP
201 and the RSA_sign/RSA_verify functions. This was made more apparent when
202 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
203 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
204 the correct format in RSA_verify so both forms transparently work.
207 *) Some servers which support TLS 1.0 can choke if we initially indicate
208 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
209 encrypted premaster secret. As a workaround use the maximum pemitted
210 client version in client hello, this should keep such servers happy
211 and still work with previous versions of OpenSSL.
214 *) Add support for TLS/DTLS heartbeats.
215 [Robin Seggelmann <seggelmann@fh-muenster.de>]
217 *) Add support for SCTP.
218 [Robin Seggelmann <seggelmann@fh-muenster.de>]
220 *) Improved PRNG seeding for VOS.
221 [Paul Green <Paul.Green@stratus.com>]
223 *) Extensive assembler packs updates, most notably:
225 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
226 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
227 - x86_64: bit-sliced AES implementation;
228 - ARM: NEON support, contemporary platforms optimizations;
229 - s390x: z196 support;
230 - *: GHASH and GF(2^m) multiplication implementations;
234 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
235 (removal of unnecessary code)
236 [Peter Sylvester <peter.sylvester@edelweb.fr>]
238 *) Add TLS key material exporter from RFC 5705.
241 *) Add DTLS-SRTP negotiation from RFC 5764.
244 *) Add Next Protocol Negotiation,
245 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
246 disabled with a no-npn flag to config or Configure. Code donated
248 [Adam Langley <agl@google.com> and Ben Laurie]
250 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
251 NIST-P256, NIST-P521, with constant-time single point multiplication on
252 typical inputs. Compiler support for the nonstandard type __uint128_t is
253 required to use this (present in gcc 4.4 and later, for 64-bit builds).
254 Code made available under Apache License version 2.0.
256 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
257 line to include this in your build of OpenSSL, and run "make depend" (or
258 "make update"). This enables the following EC_METHODs:
260 EC_GFp_nistp224_method()
261 EC_GFp_nistp256_method()
262 EC_GFp_nistp521_method()
264 EC_GROUP_new_by_curve_name() will automatically use these (while
265 EC_GROUP_new_curve_GFp() currently prefers the more flexible
267 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
269 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
270 all platforms. Move ssize_t definition from e_os.h to the public
271 header file e_os2.h as it now appears in public header file cms.h
274 *) New -sigopt option to the ca, req and x509 utilities. Additional
275 signature parameters can be passed using this option and in
279 *) Add RSA PSS signing function. This will generate and set the
280 appropriate AlgorithmIdentifiers for PSS based on those in the
281 corresponding EVP_MD_CTX structure. No application support yet.
284 *) Support for companion algorithm specific ASN1 signing routines.
285 New function ASN1_item_sign_ctx() signs a pre-initialised
286 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
287 the appropriate parameters.
290 *) Add new algorithm specific ASN1 verification initialisation function
291 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
292 handling will be the same no matter what EVP_PKEY_METHOD is used.
293 Add a PSS handler to support verification of PSS signatures: checked
294 against a number of sample certificates.
297 *) Add signature printing for PSS. Add PSS OIDs.
298 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
300 *) Add algorithm specific signature printing. An individual ASN1 method
301 can now print out signatures instead of the standard hex dump.
303 More complex signatures (e.g. PSS) can print out more meaningful
304 information. Include DSA version that prints out the signature
308 *) Password based recipient info support for CMS library: implementing
312 *) Split password based encryption into PBES2 and PBKDF2 functions. This
313 neatly separates the code into cipher and PBE sections and is required
314 for some algorithms that split PBES2 into separate pieces (such as
318 *) Session-handling fixes:
319 - Fix handling of connections that are resuming with a session ID,
320 but also support Session Tickets.
321 - Fix a bug that suppressed issuing of a new ticket if the client
322 presented a ticket with an expired session.
323 - Try to set the ticket lifetime hint to something reasonable.
324 - Make tickets shorter by excluding irrelevant information.
325 - On the client side, don't ignore renewed tickets.
326 [Adam Langley, Bodo Moeller (Google)]
328 *) Fix PSK session representation.
331 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
333 This work was sponsored by Intel.
336 *) Add GCM support to TLS library. Some custom code is needed to split
337 the IV between the fixed (from PRF) and explicit (from TLS record)
338 portions. This adds all GCM ciphersuites supported by RFC5288 and
339 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
340 add a special AESGCM string for GCM only.
343 *) Expand range of ctrls for AES GCM. Permit setting invocation
344 field on decrypt and retrieval of invocation field only on encrypt.
347 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
348 As required by RFC5289 these ciphersuites cannot be used if for
349 versions of TLS earlier than 1.2.
352 *) For FIPS capable OpenSSL interpret a NULL default public key method
353 as unset and return the appopriate default but do *not* set the default.
354 This means we can return the appopriate method in applications that
355 swicth between FIPS and non-FIPS modes.
358 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
359 ENGINE is used then we cannot handle that in the FIPS module so we
360 keep original code iff non-FIPS operations are allowed.
363 *) Add -attime option to openssl utilities.
364 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
366 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
369 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
370 FIPS EC methods unconditionally for now.
373 *) New build option no-ec2m to disable characteristic 2 code.
376 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
377 all cases can be covered as some introduce binary incompatibilities.
380 *) Redirect RSA operations to FIPS module including keygen,
381 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
384 *) Add similar low level API blocking to ciphers.
387 *) Low level digest APIs are not approved in FIPS mode: any attempt
388 to use these will cause a fatal error. Applications that *really* want
389 to use them can use the private_* version instead.
392 *) Redirect cipher operations to FIPS module for FIPS builds.
395 *) Redirect digest operations to FIPS module for FIPS builds.
398 *) Update build system to add "fips" flag which will link in fipscanister.o
399 for static and shared library builds embedding a signature if needed.
402 *) Output TLS supported curves in preference order instead of numerical
403 order. This is currently hardcoded for the highest order curves first.
404 This should be configurable so applications can judge speed vs strength.
407 *) Add TLS v1.2 server support for client authentication.
410 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
414 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
415 FIPS modules versions.
418 *) Add TLS v1.2 client side support for client authentication. Keep cache
419 of handshake records longer as we don't know the hash algorithm to use
420 until after the certificate request message is received.
423 *) Initial TLS v1.2 client support. Add a default signature algorithms
424 extension including all the algorithms we support. Parse new signature
425 format in client key exchange. Relax some ECC signing restrictions for
426 TLS v1.2 as indicated in RFC5246.
429 *) Add server support for TLS v1.2 signature algorithms extension. Switch
430 to new signature format when needed using client digest preference.
431 All server ciphersuites should now work correctly in TLS v1.2. No client
432 support yet and no support for client certificates.
435 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
436 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
437 ciphersuites. At present only RSA key exchange ciphersuites work with
438 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
439 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
440 and version checking.
443 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
444 with this defined it will not be affected by any changes to ssl internal
445 structures. Add several utility functions to allow openssl application
446 to work with OPENSSL_NO_SSL_INTERN defined.
450 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
452 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
455 *) Permit abbreviated handshakes when renegotiating using the function
456 SSL_renegotiate_abbreviated().
457 [Robin Seggelmann <seggelmann@fh-muenster.de>]
459 *) Add call to ENGINE_register_all_complete() to
460 ENGINE_load_builtin_engines(), so some implementations get used
461 automatically instead of needing explicit application support.
464 *) Add support for TLS key exporter as described in RFC5705.
465 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
467 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
468 a few changes are required:
470 Add SSL_OP_NO_TLSv1_1 flag.
472 Update version checking logic to handle version 1.1.
473 Add explicit IV handling (ported from DTLS code).
474 Add command line options to s_client/s_server.
477 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
479 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
480 in CMS and PKCS7 code. When RSA decryption fails use a random key for
481 content decryption and always return the same error. Note: this attack
482 needs on average 2^20 messages so it only affects automated senders. The
483 old behaviour can be reenabled in the CMS code by setting the
484 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
485 an MMA defence is not necessary.
486 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
487 this issue. (CVE-2012-0884)
490 *) Fix CVE-2011-4619: make sure we really are receiving a
491 client hello before rejecting multiple SGC restarts. Thanks to
492 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
495 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
497 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
498 Thanks to Antonio Martin, Enterprise Secure Access Research and
499 Development, Cisco Systems, Inc. for discovering this bug and
500 preparing a fix. (CVE-2012-0050)
503 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
505 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
506 of the Vaudenay padding oracle attack on CBC mode encryption
507 which enables an efficient plaintext recovery attack against
508 the OpenSSL implementation of DTLS. Their attack exploits timing
509 differences arising during decryption processing. A research
510 paper describing this attack can be found at:
511 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
512 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
513 Security Group at Royal Holloway, University of London
514 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
515 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
516 for preparing the fix. (CVE-2011-4108)
517 [Robin Seggelmann, Michael Tuexen]
519 *) Clear bytes used for block padding of SSL 3.0 records.
521 [Adam Langley (Google)]
523 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
524 Kadianakis <desnacked@gmail.com> for discovering this issue and
525 Adam Langley for preparing the fix. (CVE-2011-4619)
526 [Adam Langley (Google)]
528 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
529 [Andrey Kulikov <amdeich@gmail.com>]
531 *) Prevent malformed RFC3779 data triggering an assertion failure.
532 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
533 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
534 [Rob Austein <sra@hactrn.net>]
536 *) Improved PRNG seeding for VOS.
537 [Paul Green <Paul.Green@stratus.com>]
539 *) Fix ssl_ciph.c set-up race.
540 [Adam Langley (Google)]
542 *) Fix spurious failures in ecdsatest.c.
543 [Emilia Käsper (Google)]
545 *) Fix the BIO_f_buffer() implementation (which was mixing different
546 interpretations of the '..._len' fields).
547 [Adam Langley (Google)]
549 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
550 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
551 threads won't reuse the same blinding coefficients.
553 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
554 lock to call BN_BLINDING_invert_ex, and avoids one use of
555 BN_BLINDING_update for each BN_BLINDING structure (previously,
556 the last update always remained unused).
557 [Emilia Käsper (Google)]
559 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
560 [Bob Buckholz (Google)]
562 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
564 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
565 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
566 [Kaspar Brand <ossl@velox.ch>]
568 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
569 for multi-threaded use of ECDH. (CVE-2011-3210)
570 [Adam Langley (Google)]
572 *) Fix x509_name_ex_d2i memory leak on bad inputs.
575 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
576 signature public key algorithm by using OID xref utilities instead.
577 Before this you could only use some ECC ciphersuites with SHA1 only.
580 *) Add protection against ECDSA timing attacks as mentioned in the paper
581 by Billy Bob Brumley and Nicola Tuveri, see:
583 http://eprint.iacr.org/2011/232.pdf
585 [Billy Bob Brumley and Nicola Tuveri]
587 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
589 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
590 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
592 *) Fix bug in string printing code: if *any* escaping is enabled we must
593 escape the escape character (backslash) or the resulting string is
597 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
599 *) Disable code workaround for ancient and obsolete Netscape browsers
600 and servers: an attacker can use it in a ciphersuite downgrade attack.
601 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
604 *) Fixed J-PAKE implementation error, originally discovered by
605 Sebastien Martini, further info and confirmation from Stefan
606 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
609 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
611 *) Fix extension code to avoid race conditions which can result in a buffer
612 overrun vulnerability: resumed sessions must not be modified as they can
613 be shared by multiple threads. CVE-2010-3864
616 *) Fix WIN32 build system to correctly link an ENGINE directory into
620 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
622 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
624 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
626 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
628 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
629 context. The operation can be customised via the ctrl mechanism in
630 case ENGINEs want to include additional functionality.
633 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
636 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
637 output hashes compatible with older versions of OpenSSL.
638 [Willy Weisz <weisz@vcpc.univie.ac.at>]
640 *) Fix compression algorithm handling: if resuming a session use the
641 compression algorithm of the resumed session instead of determining
642 it from client hello again. Don't allow server to change algorithm.
645 *) Add load_crls() function to apps tidying load_certs() too. Add option
646 to verify utility to allow additional CRLs to be included.
649 *) Update OCSP request code to permit adding custom headers to the request:
650 some responders need this.
653 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
655 [Julia Lawall <julia@diku.dk>]
657 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
658 needlessly dereferenced structures, used obsolete functions and
659 didn't handle all updated verify codes correctly.
662 *) Disable MD2 in the default configuration.
665 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
666 indicate the initial BIO being pushed or popped. This makes it possible
667 to determine whether the BIO is the one explicitly called or as a result
668 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
669 it handles reference counts correctly and doesn't zero out the I/O bio
670 when it is not being explicitly popped. WARNING: applications which
671 included workarounds for the old buggy behaviour will need to be modified
672 or they could free up already freed BIOs.
675 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
676 renaming to all platforms (within the 0.9.8 branch, this was
677 done conditionally on Netware platforms to avoid a name clash).
678 [Guenter <lists@gknw.net>]
680 *) Add ECDHE and PSK support to DTLS.
681 [Michael Tuexen <tuexen@fh-muenster.de>]
683 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
687 *) Add "missing" function EVP_MD_flags() (without this the only way to
688 retrieve a digest flags is by accessing the structure directly. Update
689 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
690 or cipher is registered as in the "from" argument. Print out all
691 registered digests in the dgst usage message instead of manually
692 attempting to work them out.
695 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
696 this allows the use of compression and extensions. Change default cipher
697 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
698 by default unless an application cipher string requests it.
701 *) Alter match criteria in PKCS12_parse(). It used to try to use local
702 key ids to find matching certificates and keys but some PKCS#12 files
703 don't follow the (somewhat unwritten) rules and this strategy fails.
704 Now just gather all certificates together and the first private key
705 then look for the first certificate that matches the key.
708 *) Support use of registered digest and cipher names for dgst and cipher
709 commands instead of having to add each one as a special case. So now
716 openssl dgst -sha256 foo
718 and this works for ENGINE based algorithms too.
722 *) Update Gost ENGINE to support parameter files.
723 [Victor B. Wagner <vitus@cryptocom.ru>]
725 *) Support GeneralizedTime in ca utility.
726 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
728 *) Enhance the hash format used for certificate directory links. The new
729 form uses the canonical encoding (meaning equivalent names will work
730 even if they aren't identical) and uses SHA1 instead of MD5. This form
731 is incompatible with the older format and as a result c_rehash should
732 be used to rebuild symbolic links.
735 *) Make PKCS#8 the default write format for private keys, replacing the
736 traditional format. This form is standardised, more secure and doesn't
737 include an implicit MD5 dependency.
740 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
741 committed to OpenSSL should pass this lot as a minimum.
744 *) Add session ticket override functionality for use by EAP-FAST.
745 [Jouni Malinen <j@w1.fi>]
747 *) Modify HMAC functions to return a value. Since these can be implemented
748 in an ENGINE errors can occur.
751 *) Type-checked OBJ_bsearch_ex.
754 *) Type-checked OBJ_bsearch. Also some constification necessitated
755 by type-checking. Still to come: TXT_DB, bsearch(?),
756 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
760 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
761 seconds to a tm structure directly, instead of going through OS
762 specific date routines. This avoids any issues with OS routines such
763 as the year 2038 bug. New *_adj() functions for ASN1 time structures
764 and X509_time_adj_ex() to cover the extended range. The existing
765 X509_time_adj() is still usable and will no longer have any date issues.
768 *) Delta CRL support. New use deltas option which will attempt to locate
769 and search any appropriate delta CRLs available.
771 This work was sponsored by Google.
774 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
775 code and add additional score elements. Validate alternate CRL paths
776 as part of the CRL checking and indicate a new error "CRL path validation
777 error" in this case. Applications wanting additional details can use
778 the verify callback and check the new "parent" field. If this is not
779 NULL CRL path validation is taking place. Existing applications wont
780 see this because it requires extended CRL support which is off by
783 This work was sponsored by Google.
786 *) Support for freshest CRL extension.
788 This work was sponsored by Google.
791 *) Initial indirect CRL support. Currently only supported in the CRLs
792 passed directly and not via lookup. Process certificate issuer
793 CRL entry extension and lookup CRL entries by bother issuer name
794 and serial number. Check and process CRL issuer entry in IDP extension.
796 This work was sponsored by Google.
799 *) Add support for distinct certificate and CRL paths. The CRL issuer
800 certificate is validated separately in this case. Only enabled if
801 an extended CRL support flag is set: this flag will enable additional
802 CRL functionality in future.
804 This work was sponsored by Google.
807 *) Add support for policy mappings extension.
809 This work was sponsored by Google.
812 *) Fixes to pathlength constraint, self issued certificate handling,
813 policy processing to align with RFC3280 and PKITS tests.
815 This work was sponsored by Google.
818 *) Support for name constraints certificate extension. DN, email, DNS
819 and URI types are currently supported.
821 This work was sponsored by Google.
824 *) To cater for systems that provide a pointer-based thread ID rather
825 than numeric, deprecate the current numeric thread ID mechanism and
826 replace it with a structure and associated callback type. This
827 mechanism allows a numeric "hash" to be extracted from a thread ID in
828 either case, and on platforms where pointers are larger than 'long',
829 mixing is done to help ensure the numeric 'hash' is usable even if it
830 can't be guaranteed unique. The default mechanism is to use "&errno"
831 as a pointer-based thread ID to distinguish between threads.
833 Applications that want to provide their own thread IDs should now use
834 CRYPTO_THREADID_set_callback() to register a callback that will call
835 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
837 Note that ERR_remove_state() is now deprecated, because it is tied
838 to the assumption that thread IDs are numeric. ERR_remove_state(0)
839 to free the current thread's error state should be replaced by
840 ERR_remove_thread_state(NULL).
842 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
843 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
844 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
845 application was previously providing a numeric thread callback that
846 was inappropriate for distinguishing threads, then uniqueness might
847 have been obtained with &errno that happened immediately in the
848 intermediate development versions of OpenSSL; this is no longer the
849 case, the numeric thread callback will now override the automatic use
851 [Geoff Thorpe, with help from Bodo Moeller]
853 *) Initial support for different CRL issuing certificates. This covers a
854 simple case where the self issued certificates in the chain exist and
855 the real CRL issuer is higher in the existing chain.
857 This work was sponsored by Google.
860 *) Removed effectively defunct crypto/store from the build.
863 *) Revamp of STACK to provide stronger type-checking. Still to come:
864 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
865 ASN1_STRING, CONF_VALUE.
868 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
869 RAM on SSL connections. This option can save about 34k per idle SSL.
872 *) Revamp of LHASH to provide stronger type-checking. Still to come:
873 STACK, TXT_DB, bsearch, qsort.
876 *) Initial support for Cryptographic Message Syntax (aka CMS) based
877 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
878 support for data, signedData, compressedData, digestedData and
879 encryptedData, envelopedData types included. Scripts to check against
880 RFC4134 examples draft and interop and consistency checks of many
881 content types and variants.
884 *) Add options to enc utility to support use of zlib compression BIO.
887 *) Extend mk1mf to support importing of options and assembly language
888 files from Configure script, currently only included in VC-WIN32.
889 The assembly language rules can now optionally generate the source
890 files from the associated perl scripts.
893 *) Implement remaining functionality needed to support GOST ciphersuites.
894 Interop testing has been performed using CryptoPro implementations.
895 [Victor B. Wagner <vitus@cryptocom.ru>]
897 *) s390x assembler pack.
900 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
904 *) Implement Opaque PRF Input TLS extension as specified in
905 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
906 official specification yet and no extension type assignment by
907 IANA exists, this extension (for now) will have to be explicitly
908 enabled when building OpenSSL by providing the extension number
909 to use. For example, specify an option
911 -DTLSEXT_TYPE_opaque_prf_input=0x9527
913 to the "config" or "Configure" script to enable the extension,
914 assuming extension number 0x9527 (which is a completely arbitrary
915 and unofficial assignment based on the MD5 hash of the Internet
916 Draft). Note that by doing so, you potentially lose
917 interoperability with other TLS implementations since these might
918 be using the same extension number for other purposes.
920 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
921 opaque PRF input value to use in the handshake. This will create
922 an interal copy of the length-'len' string at 'src', and will
923 return non-zero for success.
925 To get more control and flexibility, provide a callback function
928 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
929 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
933 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
936 Callback function 'cb' will be called in handshakes, and is
937 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
938 Argument 'arg' is for application purposes (the value as given to
939 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
940 be provided to the callback function). The callback function
941 has to return non-zero to report success: usually 1 to use opaque
942 PRF input just if possible, or 2 to enforce use of the opaque PRF
943 input. In the latter case, the library will abort the handshake
944 if opaque PRF input is not successfully negotiated.
946 Arguments 'peerinput' and 'len' given to the callback function
947 will always be NULL and 0 in the case of a client. A server will
948 see the client's opaque PRF input through these variables if
949 available (NULL and 0 otherwise). Note that if the server
950 provides an opaque PRF input, the length must be the same as the
951 length of the client's opaque PRF input.
953 Note that the callback function will only be called when creating
954 a new session (session resumption can resume whatever was
955 previously negotiated), and will not be called in SSL 2.0
956 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
957 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
958 for applications that need to enforce opaque PRF input.
962 *) Update ssl code to support digests other than SHA1+MD5 for handshake
965 [Victor B. Wagner <vitus@cryptocom.ru>]
967 *) Add RFC4507 support to OpenSSL. This includes the corrections in
968 RFC4507bis. The encrypted ticket format is an encrypted encoded
969 SSL_SESSION structure, that way new session features are automatically
972 If a client application caches session in an SSL_SESSION structure
973 support is transparent because tickets are now stored in the encoded
976 The SSL_CTX structure automatically generates keys for ticket
977 protection in servers so again support should be possible
978 with no application modification.
980 If a client or server wishes to disable RFC4507 support then the option
981 SSL_OP_NO_TICKET can be set.
983 Add a TLS extension debugging callback to allow the contents of any client
984 or server extensions to be examined.
986 This work was sponsored by Google.
989 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
990 OpenSSL should now compile cleanly on gcc 4.2
991 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
993 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
994 support including streaming MAC support: this is required for GOST
996 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
998 *) Add option -stream to use PKCS#7 streaming in smime utility. New
999 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1000 to output in BER and PEM format.
1003 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1004 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1005 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1006 ENGINE support for HMAC keys which are unextractable. New -mac and
1007 -macopt options to dgst utility.
1010 *) New option -sigopt to dgst utility. Update dgst to use
1011 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1012 alternative signing paramaters such as X9.31 or PSS in the dgst
1016 *) Change ssl_cipher_apply_rule(), the internal function that does
1017 the work each time a ciphersuite string requests enabling
1018 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1019 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1020 the order of disabled ciphersuites such that those ciphersuites
1021 that most recently went from enabled to disabled not only stay
1022 in order with respect to each other, but also have higher priority
1023 than other disabled ciphersuites the next time ciphersuites are
1026 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1027 the same ciphersuites as with "HIGH" alone, but in a specific
1028 order where the PSK ciphersuites come first (since they are the
1029 most recently disabled ciphersuites when "HIGH" is parsed).
1031 Also, change ssl_create_cipher_list() (using this new
1032 funcionality) such that between otherwise identical
1033 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1037 *) Change ssl_create_cipher_list() so that it automatically
1038 arranges the ciphersuites in reasonable order before starting
1039 to process the rule string. Thus, the definition for "DEFAULT"
1040 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1041 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1042 This makes it much easier to arrive at a reasonable default order
1043 in applications for which anonymous ciphers are OK (meaning
1044 that you can't actually use DEFAULT).
1045 [Bodo Moeller; suggested by Victor Duchovni]
1047 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1048 processing) into multiple integers instead of setting
1049 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1050 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1051 (These masks as well as the individual bit definitions are hidden
1052 away into the non-exported interface ssl/ssl_locl.h, so this
1053 change to the definition of the SSL_CIPHER structure shouldn't
1054 affect applications.) This give us more bits for each of these
1055 categories, so there is no longer a need to coagulate AES128 and
1056 AES256 into a single algorithm bit, and to coagulate Camellia128
1057 and Camellia256 into a single algorithm bit, which has led to all
1060 Thus, among other things, the kludge introduced in 0.9.7m and
1061 0.9.8e for masking out AES256 independently of AES128 or masking
1062 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1064 With the change, we also introduce new ciphersuite aliases that
1065 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1069 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1070 Use the leftmost N bytes of the signature input if the input is
1071 larger than the prime q (with N being the size in bytes of q).
1074 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1075 it yet and it is largely untested.
1078 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1081 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1082 some compilers (gcc 4.2 and later) reject their use. Safestack is
1083 reimplemented. Update ASN1 to avoid use of legacy functions.
1086 *) Win32/64 targets are linked with Winsock2.
1089 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1090 to external functions. This can be used to increase CRL handling
1091 efficiency especially when CRLs are very large by (for example) storing
1092 the CRL revoked certificates in a database.
1095 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1096 new CRLs added to a directory can be used. New command line option
1097 -verify_return_error to s_client and s_server. This causes real errors
1098 to be returned by the verify callback instead of carrying on no matter
1099 what. This reflects the way a "real world" verify callback would behave.
1102 *) GOST engine, supporting several GOST algorithms and public key formats.
1103 Kindly donated by Cryptocom.
1106 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1107 partitioned by DP are handled but no indirect CRL or reason partitioning
1108 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1109 selected via a scoring technique which handles IDP and AKID in CRLs.
1112 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1113 will ultimately be used for all verify operations: this will remove the
1114 X509_STORE dependency on certificate verification and allow alternative
1115 lookup methods. X509_STORE based implementations of these two callbacks.
1118 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1119 Modify get_crl() to find a valid (unexpired) CRL if possible.
1122 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1123 this would be called X509_CRL_cmp() but that name is already used by
1124 a function that just compares CRL issuer names. Cache several CRL
1125 extensions in X509_CRL structure and cache CRLDP in X509.
1128 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1129 this maps equivalent X509_NAME structures into a consistent structure.
1130 Name comparison can then be performed rapidly using memcmp().
1133 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1137 *) Allow digests to supply their own micalg string for S/MIME type using
1138 the ctrl EVP_MD_CTRL_MICALG.
1141 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1142 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1143 ctrl. It can then customise the structure before and/or after signing
1147 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1148 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1149 to free up any added signature OIDs.
1152 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1153 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1154 digest and cipher tables. New options added to openssl utility:
1155 list-message-digest-algorithms and list-cipher-algorithms.
1158 *) Change the array representation of binary polynomials: the list
1159 of degrees of non-zero coefficients is now terminated with -1.
1160 Previously it was terminated with 0, which was also part of the
1161 value; thus, the array representation was not applicable to
1162 polynomials where t^0 has coefficient zero. This change makes
1163 the array representation useful in a more general context.
1166 *) Various modifications and fixes to SSL/TLS cipher string
1167 handling. For ECC, the code now distinguishes between fixed ECDH
1168 with RSA certificates on the one hand and with ECDSA certificates
1169 on the other hand, since these are separate ciphersuites. The
1170 unused code for Fortezza ciphersuites has been removed.
1172 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1173 (not "ECDHE"). For consistency with the code for DH
1174 certificates, use of ECDH certificates is now considered ECDH
1175 authentication, not RSA or ECDSA authentication (the latter is
1176 merely the CA's signing algorithm and not actively used in the
1179 The temporary ciphersuite alias "ECCdraft" is no longer
1180 available, and ECC ciphersuites are no longer excluded from "ALL"
1181 and "DEFAULT". The following aliases now exist for RFC 4492
1182 ciphersuites, most of these by analogy with the DH case:
1184 kECDHr - ECDH cert, signed with RSA
1185 kECDHe - ECDH cert, signed with ECDSA
1186 kECDH - ECDH cert (signed with either RSA or ECDSA)
1187 kEECDH - ephemeral ECDH
1188 ECDH - ECDH cert or ephemeral ECDH
1194 AECDH - anonymous ECDH
1195 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1199 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1200 Use correct micalg parameters depending on digest(s) in signed message.
1203 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1204 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1207 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1208 an engine to register a method. Add ENGINE lookups for methods and
1209 functional reference processing.
1212 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1213 EVP_{Sign,Verify}* which allow an application to customise the signature
1217 *) New -resign option to smime utility. This adds one or more signers
1218 to an existing PKCS#7 signedData structure. Also -md option to use an
1219 alternative message digest algorithm for signing.
1222 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1223 create PKCS7 structures containing multiple signers. Update smime
1224 application to support multiple signers.
1227 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1231 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1232 Reorganize PBE internals to lookup from a static table using NIDs,
1233 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1234 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1235 PRF which will be automatically used with PBES2.
1238 *) Replace the algorithm specific calls to generate keys in "req" with the
1242 *) Update PKCS#7 enveloped data routines to use new API. This is now
1243 supported by any public key method supporting the encrypt operation. A
1244 ctrl is added to allow the public key algorithm to examine or modify
1245 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1249 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1250 a default digest type to use. In most cases this will be SHA1 but some
1251 algorithms (such as GOST) need to specify an alternative digest. The
1252 return value indicates how strong the prefernce is 1 means optional and
1253 2 is mandatory (that is it is the only supported type). Modify
1254 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1255 use the default md. Update openssl utilities to use the default digest
1256 type for signing if it is not explicitly indicated.
1259 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1260 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1261 signing method from the key type. This effectively removes the link
1262 between digests and public key types.
1265 *) Add an OID cross reference table and utility functions. Its purpose is to
1266 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1267 rsaEncryption. This will allow some of the algorithm specific hackery
1268 needed to use the correct OID to be removed.
1271 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1272 structures for PKCS7_sign(). They are now set up by the relevant public
1276 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1279 *) Add support for key derivation (agreement) in the API, DH method and
1283 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1284 public and private key formats. As a side effect these add additional
1285 command line functionality not previously available: DSA signatures can be
1286 generated and verified using pkeyutl and DH key support and generation in
1291 [Oliver Tappe <zooey@hirschkaefer.de>]
1293 *) New make target "install_html_docs" installs HTML renditions of the
1295 [Oliver Tappe <zooey@hirschkaefer.de>]
1297 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1298 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1299 support key and parameter generation and add initial key generation
1300 functionality for RSA.
1303 *) Add functions for main EVP_PKEY_method operations. The undocumented
1304 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1305 EVP_PKEY_{encrypt,decrypt}_old.
1308 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1309 key API, doesn't do much yet.
1312 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1313 public key algorithms. New option to openssl utility:
1314 "list-public-key-algorithms" to print out info.
1317 *) Implement the Supported Elliptic Curves Extension for
1318 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1321 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1322 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1325 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1326 utilities such as rsa, dsa, dsaparam etc except they process any key
1330 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1331 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1332 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1336 *) Initial support for pluggable public key ASN1.
1337 De-spaghettify the public key ASN1 handling. Move public and private
1338 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1339 algorithm specific handling to a single module within the relevant
1340 algorithm directory. Add functions to allow (near) opaque processing
1341 of public and private key structures.
1344 *) Implement the Supported Point Formats Extension for
1345 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1348 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1349 for the psk identity [hint] and the psk callback functions to the
1350 SSL_SESSION, SSL and SSL_CTX structure.
1353 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1357 SSL_CTX_use_psk_identity_hint
1358 SSL_get_psk_identity_hint
1359 SSL_get_psk_identity
1360 SSL_use_psk_identity_hint
1362 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1364 *) Add RFC 3161 compliant time stamp request creation, response generation
1365 and response verification functionality.
1366 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1368 *) Add initial support for TLS extensions, specifically for the server_name
1369 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1370 have new members for a host name. The SSL data structure has an
1371 additional member SSL_CTX *initial_ctx so that new sessions can be
1372 stored in that context to allow for session resumption, even after the
1373 SSL has been switched to a new SSL_CTX in reaction to a client's
1374 server_name extension.
1376 New functions (subject to change):
1378 SSL_get_servername()
1379 SSL_get_servername_type()
1382 New CTRL codes and macros (subject to change):
1384 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1385 - SSL_CTX_set_tlsext_servername_callback()
1386 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1387 - SSL_CTX_set_tlsext_servername_arg()
1388 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1390 openssl s_client has a new '-servername ...' option.
1392 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1393 '-key2 ...', '-servername_fatal' (subject to change). This allows
1394 testing the HostName extension for a specific single host name ('-cert'
1395 and '-key' remain fallbacks for handshakes without HostName
1396 negotiation). If the unrecogninzed_name alert has to be sent, this by
1397 default is a warning; it becomes fatal with the '-servername_fatal'
1400 [Peter Sylvester, Remy Allais, Christophe Renou]
1402 *) Whirlpool hash implementation is added.
1405 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1406 bn(64,32). Because of instruction set limitations it doesn't have
1407 any negative impact on performance. This was done mostly in order
1408 to make it possible to share assembler modules, such as bn_mul_mont
1409 implementations, between 32- and 64-bit builds without hassle.
1412 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1413 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1417 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1418 dedicated Montgomery multiplication procedure, is introduced.
1419 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1420 "64-bit" performance on certain 32-bit targets.
1423 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1424 in SSL structures. New SSL ctrl to set maximum send fragment size.
1425 Save memory by seeting the I/O buffer sizes dynamically instead of
1426 using the maximum available value.
1429 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1430 in addition to the text details.
1433 *) Very, very preliminary EXPERIMENTAL support for printing of general
1434 ASN1 structures. This currently produces rather ugly output and doesn't
1435 handle several customised structures at all.
1438 *) Integrated support for PVK file format and some related formats such
1439 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1440 these in the 'rsa' and 'dsa' utilities.
1443 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1446 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1447 place for the (very old) "NETSCAPE" format certificates which are now
1448 handled using new ASN1 code equivalents.
1451 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1452 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1453 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1456 *) Modify CRL distribution points extension code to print out previously
1457 unsupported fields. Enhance extension setting code to allow setting of
1461 *) Add print and set support for Issuing Distribution Point CRL extension.
1464 *) Change 'Configure' script to enable Camellia by default.
1467 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
1469 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1470 Thanks to Antonio Martin, Enterprise Secure Access Research and
1471 Development, Cisco Systems, Inc. for discovering this bug and
1472 preparing a fix. (CVE-2012-0050)
1475 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
1477 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1478 of the Vaudenay padding oracle attack on CBC mode encryption
1479 which enables an efficient plaintext recovery attack against
1480 the OpenSSL implementation of DTLS. Their attack exploits timing
1481 differences arising during decryption processing. A research
1482 paper describing this attack can be found at:
1483 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1484 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1485 Security Group at Royal Holloway, University of London
1486 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1487 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1488 for preparing the fix. (CVE-2011-4108)
1489 [Robin Seggelmann, Michael Tuexen]
1491 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
1492 [Ben Laurie, Kasper <ekasper@google.com>]
1494 *) Clear bytes used for block padding of SSL 3.0 records.
1496 [Adam Langley (Google)]
1498 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1499 Kadianakis <desnacked@gmail.com> for discovering this issue and
1500 Adam Langley for preparing the fix. (CVE-2011-4619)
1501 [Adam Langley (Google)]
1503 *) Prevent malformed RFC3779 data triggering an assertion failure.
1504 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1505 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1506 [Rob Austein <sra@hactrn.net>]
1508 *) Fix ssl_ciph.c set-up race.
1509 [Adam Langley (Google)]
1511 *) Fix spurious failures in ecdsatest.c.
1512 [Emilia Käsper (Google)]
1514 *) Fix the BIO_f_buffer() implementation (which was mixing different
1515 interpretations of the '..._len' fields).
1516 [Adam Langley (Google)]
1518 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1519 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1520 threads won't reuse the same blinding coefficients.
1522 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1523 lock to call BN_BLINDING_invert_ex, and avoids one use of
1524 BN_BLINDING_update for each BN_BLINDING structure (previously,
1525 the last update always remained unused).
1526 [Emilia Käsper (Google)]
1528 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1529 for multi-threaded use of ECDH.
1530 [Adam Langley (Google)]
1532 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1535 *) Add protection against ECDSA timing attacks as mentioned in the paper
1536 by Billy Bob Brumley and Nicola Tuveri, see:
1538 http://eprint.iacr.org/2011/232.pdf
1540 [Billy Bob Brumley and Nicola Tuveri]
1542 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1544 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1545 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1547 *) Fix bug in string printing code: if *any* escaping is enabled we must
1548 escape the escape character (backslash) or the resulting string is
1552 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1554 *) Disable code workaround for ancient and obsolete Netscape browsers
1555 and servers: an attacker can use it in a ciphersuite downgrade attack.
1556 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1559 *) Fixed J-PAKE implementation error, originally discovered by
1560 Sebastien Martini, further info and confirmation from Stefan
1561 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1564 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1566 *) Fix extension code to avoid race conditions which can result in a buffer
1567 overrun vulnerability: resumed sessions must not be modified as they can
1568 be shared by multiple threads. CVE-2010-3864
1571 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1574 *) Don't reencode certificate when calculating signature: cache and use
1575 the original encoding instead. This makes signature verification of
1576 some broken encodings work correctly.
1579 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1580 is also one of the inputs.
1581 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1583 *) Don't repeatedly append PBE algorithms to table if they already exist.
1584 Sort table on each new add. This effectively makes the table read only
1585 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1589 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1591 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1594 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1595 access or freeing data twice (CVE-2010-0742)
1596 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1598 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1599 common in certificates and some applications which only call
1600 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1604 Reduce copying into .apps and .test in makevms.com
1605 Don't try to use blank CA certificate in CA.com
1606 Allow use of C files from original directories in maketests.com
1607 [Steven M. Schweda" <sms@antinode.info>]
1609 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1611 *) When rejecting SSL/TLS records due to an incorrect version number, never
1612 update s->server with a new major version number. As of
1613 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1614 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1615 the previous behavior could result in a read attempt at NULL when
1616 receiving specific incorrect SSL/TLS records once record payload
1617 protection is active. (CVE-2010-0740)
1618 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1620 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1621 could be crashed if the relevant tables were not present (e.g. chrooted).
1622 [Tomas Hoger <thoger@redhat.com>]
1624 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1626 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1627 [Martin Olsson, Neel Mehta]
1629 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1630 accommodate for stack sorting, always a write lock!).
1633 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1634 excessive delays in the RAND_poll(): over a minute. As a workaround
1635 include a time check in the inner Heap32Next loop too.
1638 *) The code that handled flushing of data in SSL/TLS originally used the
1639 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1640 the problem outlined in PR#1949. The fix suggested there however can
1641 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1642 of Apache). So instead simplify the code to flush unconditionally.
1643 This should be fine since flushing with no data to flush is a no op.
1646 *) Handle TLS versions 2.0 and later properly and correctly use the
1647 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1648 off ancient servers have a habit of sticking around for a while...
1651 *) Modify compression code so it frees up structures without using the
1652 ex_data callbacks. This works around a problem where some applications
1653 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1654 restarting) then use compression (e.g. SSL with compression) later.
1655 This results in significant per-connection memory leaks and
1656 has caused some security issues including CVE-2008-1678 and
1660 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1661 change when encrypting or decrypting.
1664 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1665 connect and renegotiate with servers which do not support RI.
1666 Until RI is more widely deployed this option is enabled by default.
1669 *) Add "missing" ssl ctrls to clear options and mode.
1672 *) If client attempts to renegotiate and doesn't support RI respond with
1673 a no_renegotiation alert as required by RFC5746. Some renegotiating
1674 TLS clients will continue a connection gracefully when they receive
1675 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1676 waiting for a server hello which it will never receive. Now we treat a
1677 received no_renegotiation alert as a fatal error. This is because
1678 applications requesting a renegotiation might well expect it to succeed
1679 and would have no code in place to handle the server denying it so the
1680 only safe thing to do is to terminate the connection.
1683 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1684 peer supports secure renegotiation and 0 otherwise. Print out peer
1685 renegotiation support in s_client/s_server.
1688 *) Replace the highly broken and deprecated SPKAC certification method with
1689 the updated NID creation version. This should correctly handle UTF8.
1692 *) Implement RFC5746. Re-enable renegotiation but require the extension
1693 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1694 turns out to be a bad idea. It has been replaced by
1695 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1696 SSL_CTX_set_options(). This is really not recommended unless you
1697 know what you are doing.
1698 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1700 *) Fixes to stateless session resumption handling. Use initial_ctx when
1701 issuing and attempting to decrypt tickets in case it has changed during
1702 servername handling. Use a non-zero length session ID when attempting
1703 stateless session resumption: this makes it possible to determine if
1704 a resumption has occurred immediately after receiving server hello
1705 (several places in OpenSSL subtly assume this) instead of later in
1709 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1710 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1711 fixes for a few places where the return code is not checked
1713 [Julia Lawall <julia@diku.dk>]
1715 *) Add --strict-warnings option to Configure script to include devteam
1716 warnings in other configurations.
1719 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1720 makes it possible to install openssl libraries in locations which
1721 have names other than "lib", for example "/usr/lib64" which some
1723 [Steve Henson, based on patch from Jeremy Utley]
1725 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1726 X690 8.9.12 and can produce some misleading textual output of OIDs.
1727 [Steve Henson, reported by Dan Kaminsky]
1729 *) Delete MD2 from algorithm tables. This follows the recommendation in
1730 several standards that it is not used in new applications due to
1731 several cryptographic weaknesses. For binary compatibility reasons
1732 the MD2 API is still compiled in by default.
1735 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1739 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1740 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1742 [Guenter <lists@gknw.net>]
1744 *) Fix the server certificate chain building code to use X509_verify_cert(),
1745 it used to have an ad-hoc builder which was unable to cope with anything
1746 other than a simple chain.
1747 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1749 *) Don't check self signed certificate signatures in X509_verify_cert()
1750 by default (a flag can override this): it just wastes time without
1751 adding any security. As a useful side effect self signed root CAs
1752 with non-FIPS digests are now usable in FIPS mode.
1755 *) In dtls1_process_out_of_seq_message() the check if the current message
1756 is already buffered was missing. For every new message was memory
1757 allocated, allowing an attacker to perform an denial of service attack
1758 with sending out of seq handshake messages until there is no memory
1759 left. Additionally every future messege was buffered, even if the
1760 sequence number made no sense and would be part of another handshake.
1761 So only messages with sequence numbers less than 10 in advance will be
1762 buffered. (CVE-2009-1378)
1763 [Robin Seggelmann, discovered by Daniel Mentz]
1765 *) Records are buffered if they arrive with a future epoch to be
1766 processed after finishing the corresponding handshake. There is
1767 currently no limitation to this buffer allowing an attacker to perform
1768 a DOS attack with sending records with future epochs until there is no
1769 memory left. This patch adds the pqueue_size() function to detemine
1770 the size of a buffer and limits the record buffer to 100 entries.
1772 [Robin Seggelmann, discovered by Daniel Mentz]
1774 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1775 parent structure is freed. (CVE-2009-1379)
1778 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1779 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1782 [Ilya O. <vrghost@gmail.com>]
1784 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1786 *) Disable renegotiation completely - this fixes a severe security
1787 problem (CVE-2009-3555) at the cost of breaking all
1788 renegotiation. Renegotiation can be re-enabled by setting
1789 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1790 run-time. This is really not recommended unless you know what
1794 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1796 *) Don't set val to NULL when freeing up structures, it is freed up by
1797 underlying code. If sizeof(void *) > sizeof(long) this can result in
1798 zeroing past the valid field. (CVE-2009-0789)
1799 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1801 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1802 checked correctly. This would allow some invalid signed attributes to
1803 appear to verify correctly. (CVE-2009-0591)
1804 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1806 *) Reject UniversalString and BMPString types with invalid lengths. This
1807 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1808 a legal length. (CVE-2009-0590)
1811 *) Set S/MIME signing as the default purpose rather than setting it
1812 unconditionally. This allows applications to override it at the store
1816 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1817 to handle some structures.
1820 *) Improve efficiency of mem_gets: don't search whole buffer each time
1822 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1824 *) New -hex option for openssl rand.
1827 *) Print out UTF8String and NumericString when parsing ASN1.
1830 *) Support NumericString type for name components.
1833 *) Allow CC in the environment to override the automatically chosen
1834 compiler. Note that nothing is done to ensure flags work with the
1838 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1840 *) Properly check EVP_VerifyFinal() and similar return values
1842 [Ben Laurie, Bodo Moeller, Google Security Team]
1844 *) Enable TLS extensions by default.
1847 *) Allow the CHIL engine to be loaded, whether the application is
1848 multithreaded or not. (This does not release the developer from the
1849 obligation to set up the dynamic locking callbacks.)
1850 [Sander Temme <sander@temme.net>]
1852 *) Use correct exit code if there is an error in dgst command.
1853 [Steve Henson; problem pointed out by Roland Dirlewanger]
1855 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1856 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1859 *) Add experimental JPAKE support, including demo authentication in
1860 s_client and s_server.
1863 *) Set the comparison function in v3_addr_canonize().
1864 [Rob Austein <sra@hactrn.net>]
1866 *) Add support for XMPP STARTTLS in s_client.
1867 [Philip Paeps <philip@freebsd.org>]
1869 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1870 to ensure that even with this option, only ciphersuites in the
1871 server's preference list will be accepted. (Note that the option
1872 applies only when resuming a session, so the earlier behavior was
1873 just about the algorithm choice for symmetric cryptography.)
1876 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1878 *) Fix NULL pointer dereference if a DTLS server received
1879 ChangeCipherSpec as first record (CVE-2009-1386).
1882 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1883 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1886 *) The fix in 0.9.8c that supposedly got rid of unsafe
1887 double-checked locking was incomplete for RSA blinding,
1888 addressing just one layer of what turns out to have been
1889 doubly unsafe triple-checked locking.
1891 So now fix this for real by retiring the MONT_HELPER macro
1892 in crypto/rsa/rsa_eay.c.
1894 [Bodo Moeller; problem pointed out by Marius Schilder]
1896 *) Various precautionary measures:
1898 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1900 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1901 (NB: This would require knowledge of the secret session ticket key
1902 to exploit, in which case you'd be SOL either way.)
1904 - Change bn_nist.c so that it will properly handle input BIGNUMs
1905 outside the expected range.
1907 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1910 [Neel Mehta, Bodo Moeller]
1912 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1913 the load fails. Useful for distros.
1914 [Ben Laurie and the FreeBSD team]
1916 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1919 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1922 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1924 This work was sponsored by Logica.
1927 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1928 keystores. Support for SSL/TLS client authentication too.
1929 Not compiled unless enable-capieng specified to Configure.
1931 This work was sponsored by Logica.
1934 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1935 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1936 attribute creation routines such as certifcate requests and PKCS#12
1940 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1942 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1943 handshake which could lead to a cilent crash as found using the
1944 Codenomicon TLS test suite (CVE-2008-1672)
1945 [Steve Henson, Mark Cox]
1947 *) Fix double free in TLS server name extensions which could lead to
1948 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1951 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1953 Clear the error queue to ensure that error entries left from
1954 older function calls do not interfere with the correct operation.
1955 [Lutz Jaenicke, Erik de Castro Lopo]
1957 *) Remove root CA certificates of commercial CAs:
1959 The OpenSSL project does not recommend any specific CA and does not
1960 have any policy with respect to including or excluding any CA.
1961 Therefore it does not make any sense to ship an arbitrary selection
1962 of root CA certificates with the OpenSSL software.
1965 *) RSA OAEP patches to fix two separate invalid memory reads.
1966 The first one involves inputs when 'lzero' is greater than
1967 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1968 before the beginning of from). The second one involves inputs where
1969 the 'db' section contains nothing but zeroes (there is a one-byte
1970 invalid read after the end of 'db').
1971 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1973 *) Partial backport from 0.9.9-dev:
1975 Introduce bn_mul_mont (dedicated Montgomery multiplication
1976 procedure) as a candidate for BIGNUM assembler implementation.
1977 While 0.9.9-dev uses assembler for various architectures, only
1978 x86_64 is available by default here in the 0.9.8 branch, and
1979 32-bit x86 is available through a compile-time setting.
1981 To try the 32-bit x86 assembler implementation, use Configure
1982 option "enable-montasm" (which exists only for this backport).
1984 As "enable-montasm" for 32-bit x86 disclaims code stability
1985 anyway, in this constellation we activate additional code
1986 backported from 0.9.9-dev for further performance improvements,
1987 namely BN_from_montgomery_word. (To enable this otherwise,
1988 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1990 [Andy Polyakov (backport partially by Bodo Moeller)]
1992 *) Add TLS session ticket callback. This allows an application to set
1993 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1994 values. This is useful for key rollover for example where several key
1995 sets may exist with different names.
1998 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1999 This was broken until now in 0.9.8 releases, such that the only way
2000 a registered ENGINE could be used (assuming it initialises
2001 successfully on the host) was to explicitly set it as the default
2002 for the relevant algorithms. This is in contradiction with 0.9.7
2003 behaviour and the documentation. With this fix, when an ENGINE is
2004 registered into a given algorithm's table of implementations, the
2005 'uptodate' flag is reset so that auto-discovery will be used next
2006 time a new context for that algorithm attempts to select an
2008 [Ian Lister (tweaked by Geoff Thorpe)]
2010 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2011 implemention in the following ways:
2013 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2016 Lack of BER streaming support means one pass streaming processing is
2017 only supported if data is detached: setting the streaming flag is
2018 ignored for embedded content.
2020 CMS support is disabled by default and must be explicitly enabled
2021 with the enable-cms configuration option.
2024 *) Update the GMP engine glue to do direct copies between BIGNUM and
2025 mpz_t when openssl and GMP use the same limb size. Otherwise the
2026 existing "conversion via a text string export" trick is still used.
2027 [Paul Sheer <paulsheer@gmail.com>]
2029 *) Zlib compression BIO. This is a filter BIO which compressed and
2030 uncompresses any data passed through it.
2033 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2034 RFC3394 compatible AES key wrapping.
2037 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2038 sets string data without copying. X509_ALGOR_set0() and
2039 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2040 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2041 from an X509_ATTRIBUTE structure optionally checking it occurs only
2042 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2046 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2047 to get the expected BN_FLG_CONSTTIME behavior.
2048 [Bodo Moeller (Google)]
2052 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2053 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2054 - added some more tests to do_tests.pl
2055 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2056 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2057 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2058 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2059 - various changes to netware.pl to enable gcc-cross builds on Win32
2061 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2062 - various changes to fix missing prototype warnings
2063 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2064 - added AES, WHIRLPOOL and CPUID assembler code to build files
2065 - added missing AES assembler make rules to mk1mf.pl
2066 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2067 [Guenter Knauf <eflash@gmx.net>]
2069 *) Implement certificate status request TLS extension defined in RFC3546.
2070 A client can set the appropriate parameters and receive the encoded
2071 OCSP response via a callback. A server can query the supplied parameters
2072 and set the encoded OCSP response in the callback. Add simplified examples
2073 to s_client and s_server.
2076 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2078 *) Fix various bugs:
2079 + Binary incompatibility of ssl_ctx_st structure
2080 + DTLS interoperation with non-compliant servers
2081 + Don't call get_session_cb() without proposed session
2082 + Fix ia64 assembler code
2083 [Andy Polyakov, Steve Henson]
2085 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2087 *) DTLS Handshake overhaul. There were longstanding issues with
2088 OpenSSL DTLS implementation, which were making it impossible for
2089 RFC 4347 compliant client to communicate with OpenSSL server.
2090 Unfortunately just fixing these incompatibilities would "cut off"
2091 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2092 server keeps tolerating non RFC compliant syntax. The opposite is
2093 not true, 0.9.8f client can not communicate with earlier server.
2094 This update even addresses CVE-2007-4995.
2097 *) Changes to avoid need for function casts in OpenSSL: some compilers
2098 (gcc 4.2 and later) reject their use.
2099 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2102 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2103 RFC4507bis. The encrypted ticket format is an encrypted encoded
2104 SSL_SESSION structure, that way new session features are automatically
2107 If a client application caches session in an SSL_SESSION structure
2108 support is transparent because tickets are now stored in the encoded
2111 The SSL_CTX structure automatically generates keys for ticket
2112 protection in servers so again support should be possible
2113 with no application modification.
2115 If a client or server wishes to disable RFC4507 support then the option
2116 SSL_OP_NO_TICKET can be set.
2118 Add a TLS extension debugging callback to allow the contents of any client
2119 or server extensions to be examined.
2121 This work was sponsored by Google.
2124 *) Add initial support for TLS extensions, specifically for the server_name
2125 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2126 have new members for a host name. The SSL data structure has an
2127 additional member SSL_CTX *initial_ctx so that new sessions can be
2128 stored in that context to allow for session resumption, even after the
2129 SSL has been switched to a new SSL_CTX in reaction to a client's
2130 server_name extension.
2132 New functions (subject to change):
2134 SSL_get_servername()
2135 SSL_get_servername_type()
2138 New CTRL codes and macros (subject to change):
2140 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2141 - SSL_CTX_set_tlsext_servername_callback()
2142 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2143 - SSL_CTX_set_tlsext_servername_arg()
2144 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2146 openssl s_client has a new '-servername ...' option.
2148 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2149 '-key2 ...', '-servername_fatal' (subject to change). This allows
2150 testing the HostName extension for a specific single host name ('-cert'
2151 and '-key' remain fallbacks for handshakes without HostName
2152 negotiation). If the unrecogninzed_name alert has to be sent, this by
2153 default is a warning; it becomes fatal with the '-servername_fatal'
2156 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2158 *) Add AES and SSE2 assembly language support to VC++ build.
2161 *) Mitigate attack on final subtraction in Montgomery reduction.
2164 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2165 (which previously caused an internal error).
2168 *) Squeeze another 10% out of IGE mode when in != out.
2171 *) AES IGE mode speedup.
2172 [Dean Gaudet (Google)]
2174 *) Add the Korean symmetric 128-bit cipher SEED (see
2175 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2176 add SEED ciphersuites from RFC 4162:
2178 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2179 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2180 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2181 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2183 To minimize changes between patchlevels in the OpenSSL 0.9.8
2184 series, SEED remains excluded from compilation unless OpenSSL
2185 is configured with 'enable-seed'.
2186 [KISA, Bodo Moeller]
2188 *) Mitigate branch prediction attacks, which can be practical if a
2189 single processor is shared, allowing a spy process to extract
2190 information. For detailed background information, see
2191 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2192 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2193 and Necessary Software Countermeasures"). The core of the change
2194 are new versions BN_div_no_branch() and
2195 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2196 respectively, which are slower, but avoid the security-relevant
2197 conditional branches. These are automatically called by BN_div()
2198 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2199 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2200 remove a conditional branch.
2202 BN_FLG_CONSTTIME is the new name for the previous
2203 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2204 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2205 in the exponent causes BN_mod_exp_mont() to use the alternative
2206 implementation in BN_mod_exp_mont_consttime().) The old name
2207 remains as a deprecated alias.
2209 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2210 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2211 constant-time implementations for more than just exponentiation.
2212 Here too the old name is kept as a deprecated alias.
2214 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2215 the BN_BLINDING structure gets an independent copy of the
2216 modulus. This means that the previous "BIGNUM *m" argument to
2217 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2218 essentially becomes "const BIGNUM *m", although we can't actually
2219 change this in the header file before 0.9.9. It allows
2220 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2221 enable BN_FLG_CONSTTIME.
2223 [Matthew D Wood (Intel Corp)]
2225 *) In the SSL/TLS server implementation, be strict about session ID
2226 context matching (which matters if an application uses a single
2227 external cache for different purposes). Previously,
2228 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2229 set. This did ensure strict client verification, but meant that,
2230 with applications using a single external cache for quite
2231 different requirements, clients could circumvent ciphersuite
2232 restrictions for a given session ID context by starting a session
2233 in a different context.
2236 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2237 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2238 authentication-only ciphersuites.
2241 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2242 not complete and could lead to a possible single byte overflow
2243 (CVE-2007-5135) [Ben Laurie]
2245 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2247 *) Since AES128 and AES256 (and similarly Camellia128 and
2248 Camellia256) share a single mask bit in the logic of
2249 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2250 kludge to work properly if AES128 is available and AES256 isn't
2251 (or if Camellia128 is available and Camellia256 isn't).
2254 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2255 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2256 When a point or a seed is encoded in a BIT STRING, we need to
2257 prevent the removal of trailing zero bits to get the proper DER
2258 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2259 of a NamedBitList, for which trailing 0 bits need to be removed.)
2262 *) Have SSL/TLS server implementation tolerate "mismatched" record
2263 protocol version while receiving ClientHello even if the
2264 ClientHello is fragmented. (The server can't insist on the
2265 particular protocol version it has chosen before the ServerHello
2266 message has informed the client about his choice.)
2269 *) Add RFC 3779 support.
2270 [Rob Austein for ARIN, Ben Laurie]
2272 *) Load error codes if they are not already present instead of using a
2273 static variable. This allows them to be cleanly unloaded and reloaded.
2274 Improve header file function name parsing.
2277 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2278 or CAPABILITY handshake as required by RFCs.
2281 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2283 *) Introduce limits to prevent malicious keys being able to
2284 cause a denial of service. (CVE-2006-2940)
2285 [Steve Henson, Bodo Moeller]
2287 *) Fix ASN.1 parsing of certain invalid structures that can result
2288 in a denial of service. (CVE-2006-2937) [Steve Henson]
2290 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2291 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2293 *) Fix SSL client code which could crash if connecting to a
2294 malicious SSLv2 server. (CVE-2006-4343)
2295 [Tavis Ormandy and Will Drewry, Google Security Team]
2297 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2298 match only those. Before that, "AES256-SHA" would be interpreted
2299 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2300 the same strength classification in 0.9.7h) as we currently only
2301 have a single AES bit in the ciphersuite description bitmap.
2302 That change, however, also applied to ciphersuite strings such as
2303 "RC4-MD5" that intentionally matched multiple ciphersuites --
2304 namely, SSL 2.0 ciphersuites in addition to the more common ones
2305 from SSL 3.0/TLS 1.0.
2307 So we change the selection algorithm again: Naming an explicit
2308 ciphersuite selects this one ciphersuite, and any other similar
2309 ciphersuite (same bitmap) from *other* protocol versions.
2310 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2311 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2313 Since SSL 2.0 does not have any ciphersuites for which the
2314 128/256 bit distinction would be relevant, this works for now.
2315 The proper fix will be to use different bits for AES128 and
2316 AES256, which would have avoided the problems from the beginning;
2317 however, bits are scarce, so we can only do this in a new release
2318 (not just a patchlevel) when we can change the SSL_CIPHER
2319 definition to split the single 'unsigned long mask' bitmap into
2320 multiple values to extend the available space.
2324 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2326 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2327 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2329 *) Add AES IGE and biIGE modes.
2332 *) Change the Unix randomness entropy gathering to use poll() when
2333 possible instead of select(), since the latter has some
2334 undesirable limitations.
2335 [Darryl Miles via Richard Levitte and Bodo Moeller]
2337 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2338 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2339 cannot be implicitly activated as part of, e.g., the "AES" alias.
2340 However, please upgrade to OpenSSL 0.9.9[-dev] for
2341 non-experimental use of the ECC ciphersuites to get TLS extension
2342 support, which is required for curve and point format negotiation
2343 to avoid potential handshake problems.
2346 *) Disable rogue ciphersuites:
2348 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2349 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2350 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2352 The latter two were purportedly from
2353 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2356 Also deactivate the remaining ciphersuites from
2357 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2358 unofficial, and the ID has long expired.
2361 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2362 dual-core machines) and other potential thread-safety issues.
2365 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2366 versions), which is now available for royalty-free use
2367 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2368 Also, add Camellia TLS ciphersuites from RFC 4132.
2370 To minimize changes between patchlevels in the OpenSSL 0.9.8
2371 series, Camellia remains excluded from compilation unless OpenSSL
2372 is configured with 'enable-camellia'.
2375 *) Disable the padding bug check when compression is in use. The padding
2376 bug check assumes the first packet is of even length, this is not
2377 necessarily true if compresssion is enabled and can result in false
2378 positives causing handshake failure. The actual bug test is ancient
2379 code so it is hoped that implementations will either have fixed it by
2380 now or any which still have the bug do not support compression.
2383 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2385 *) When applying a cipher rule check to see if string match is an explicit
2386 cipher suite and only match that one cipher suite if it is.
2389 *) Link in manifests for VC++ if needed.
2390 [Austin Ziegler <halostatue@gmail.com>]
2392 *) Update support for ECC-based TLS ciphersuites according to
2393 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2394 TLS extensions, which are supported starting with the 0.9.9
2395 branch, not in the OpenSSL 0.9.8 branch).
2398 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2399 opaque EVP_CIPHER_CTX handling.
2402 *) Fixes and enhancements to zlib compression code. We now only use
2403 "zlib1.dll" and use the default __cdecl calling convention on Win32
2404 to conform with the standards mentioned here:
2405 http://www.zlib.net/DLL_FAQ.txt
2406 Static zlib linking now works on Windows and the new --with-zlib-include
2407 --with-zlib-lib options to Configure can be used to supply the location
2408 of the headers and library. Gracefully handle case where zlib library
2412 *) Several fixes and enhancements to the OID generation code. The old code
2413 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2414 handle numbers larger than ULONG_MAX, truncated printing and had a
2415 non standard OBJ_obj2txt() behaviour.
2418 *) Add support for building of engines under engine/ as shared libraries
2419 under VC++ build system.
2422 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2423 Hopefully, we will not see any false combination of paths any more.
2426 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2428 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2429 (part of SSL_OP_ALL). This option used to disable the
2430 countermeasure against man-in-the-middle protocol-version
2431 rollback in the SSL 2.0 server implementation, which is a bad
2432 idea. (CVE-2005-2969)
2434 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2435 for Information Security, National Institute of Advanced Industrial
2436 Science and Technology [AIST], Japan)]
2438 *) Add two function to clear and return the verify parameter flags.
2441 *) Keep cipherlists sorted in the source instead of sorting them at
2442 runtime, thus removing the need for a lock.
2445 *) Avoid some small subgroup attacks in Diffie-Hellman.
2446 [Nick Mathewson and Ben Laurie]
2448 *) Add functions for well-known primes.
2451 *) Extended Windows CE support.
2452 [Satoshi Nakamura and Andy Polyakov]
2454 *) Initialize SSL_METHOD structures at compile time instead of during
2455 runtime, thus removing the need for a lock.
2458 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2459 attempting to decrypt each encrypted key in turn. Add support to
2463 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2465 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2468 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2471 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2472 key into the same file any more.
2475 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2478 *) Add -utf8 command line and config file option to 'ca'.
2479 [Stefan <stf@udoma.org]
2481 *) Removed the macro des_crypt(), as it seems to conflict with some
2482 libraries. Use DES_crypt().
2485 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2486 involves renaming the source and generated shared-libs for
2487 both. The engines will accept the corrected or legacy ids
2488 ('ncipher' and '4758_cca' respectively) when binding. NB,
2489 this only applies when building 'shared'.
2490 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2492 *) Add attribute functions to EVP_PKEY structure. Modify
2493 PKCS12_create() to recognize a CSP name attribute and
2494 use it. Make -CSP option work again in pkcs12 utility.
2497 *) Add new functionality to the bn blinding code:
2498 - automatic re-creation of the BN_BLINDING parameters after
2499 a fixed number of uses (currently 32)
2500 - add new function for parameter creation
2501 - introduce flags to control the update behaviour of the
2502 BN_BLINDING parameters
2503 - hide BN_BLINDING structure
2504 Add a second BN_BLINDING slot to the RSA structure to improve
2505 performance when a single RSA object is shared among several
2509 *) Add support for DTLS.
2510 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2512 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2513 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2516 *) Remove buggy and incompletet DH cert support from
2517 ssl/ssl_rsa.c and ssl/s3_both.c
2520 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2521 the apps/openssl applications.
2524 *) Compile clean with "-Wall -Wmissing-prototypes
2525 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2526 DEBUG_SAFESTACK must also be set.
2529 *) Change ./Configure so that certain algorithms can be disabled by default.
2530 The new counterpiece to "no-xxx" is "enable-xxx".
2532 The patented RC5 and MDC2 algorithms will now be disabled unless
2533 "enable-rc5" and "enable-mdc2", respectively, are specified.
2535 (IDEA remains enabled despite being patented. This is because IDEA
2536 is frequently required for interoperability, and there is no license
2537 fee for non-commercial use. As before, "no-idea" can be used to
2538 avoid this algorithm.)
2542 *) Add processing of proxy certificates (see RFC 3820). This work was
2543 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2544 EGEE (Enabling Grids for E-science in Europe).
2547 *) RC4 performance overhaul on modern architectures/implementations, such
2548 as Intel P4, IA-64 and AMD64.
2551 *) New utility extract-section.pl. This can be used specify an alternative
2552 section number in a pod file instead of having to treat each file as
2553 a separate case in Makefile. This can be done by adding two lines to the
2556 =for comment openssl_section:XXX
2558 The blank line is mandatory.
2562 *) New arguments -certform, -keyform and -pass for s_client and s_server
2563 to allow alternative format key and certificate files and passphrase
2567 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2568 update associated structures and add various utility functions.
2570 Add new policy related verify parameters, include policy checking in
2571 standard verify code. Enhance 'smime' application with extra parameters
2572 to support policy checking and print out.
2575 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2576 Nehemiah processors. These extensions support AES encryption in hardware
2577 as well as RNG (though RNG support is currently disabled).
2578 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2580 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2583 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2584 [Andy Polyakov and a number of other people]
2586 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2587 implementation contributed by IBM.
2588 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2590 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2591 exponent rather than 'unsigned long'. There is a corresponding change to
2592 the new 'rsa_keygen' element of the RSA_METHOD structure.
2593 [Jelte Jansen, Geoff Thorpe]
2595 *) Functionality for creating the initial serial number file is now
2596 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2598 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2599 number file to 1, which is bound to cause problems. To avoid
2600 the problems while respecting compatibility between different 0.9.7
2601 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2602 CA.pl for serial number initialization. With the new release 0.9.8,
2603 we can fix the problem directly in the 'ca' utility.)
2606 *) Reduced header interdepencies by declaring more opaque objects in
2607 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2608 give fewer recursive includes, which could break lazy source code - so
2609 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2610 developers should define this symbol when building and using openssl to
2611 ensure they track the recommended behaviour, interfaces, [etc], but
2612 backwards-compatible behaviour prevails when this isn't defined.
2615 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2618 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2619 This will generate a random key of the appropriate length based on the
2620 cipher context. The EVP_CIPHER can provide its own random key generation
2621 routine to support keys of a specific form. This is used in the des and
2622 3des routines to generate a key of the correct parity. Update S/MIME
2623 code to use new functions and hence generate correct parity DES keys.
2624 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2625 valid (weak or incorrect parity).
2628 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2629 as looking them up. This is useful when the verified structure may contain
2630 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2631 present unless the new PKCS7_NO_CRL flag is asserted.
2634 *) Extend ASN1 oid configuration module. It now additionally accepts the
2637 shortName = some long name, 1.2.3.4
2640 *) Reimplemented the BN_CTX implementation. There is now no more static
2641 limitation on the number of variables it can handle nor the depth of the
2642 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2643 information can now expand as required, and rather than having a single
2644 static array of bignums, BN_CTX now uses a linked-list of such arrays
2645 allowing it to expand on demand whilst maintaining the usefulness of
2646 BN_CTX's "bundling".
2649 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2650 to allow all RSA operations to function using a single BN_CTX.
2653 *) Preliminary support for certificate policy evaluation and checking. This
2654 is initially intended to pass the tests outlined in "Conformance Testing
2655 of Relying Party Client Certificate Path Processing Logic" v1.07.
2658 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2659 remained unused and not that useful. A variety of other little bignum
2660 tweaks and fixes have also been made continuing on from the audit (see
2664 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2665 associated ASN1, EVP and SSL functions and old ASN1 macros.
2668 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2669 and this should never fail. So the return value from the use of
2670 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2671 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2674 *) BN_CTX_get() should return zero-valued bignums, providing the same
2675 initialised value as BN_new().
2676 [Geoff Thorpe, suggested by Ulf Möller]
2678 *) Support for inhibitAnyPolicy certificate extension.
2681 *) An audit of the BIGNUM code is underway, for which debugging code is
2682 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2683 is considered valid when processing BIGNUMs, and causes execution to
2684 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2685 further steps are taken to deliberately pollute unused data in BIGNUM
2686 structures to try and expose faulty code further on. For now, openssl will
2687 (in its default mode of operation) continue to tolerate the inconsistent
2688 forms that it has tolerated in the past, but authors and packagers should
2689 consider trying openssl and their own applications when compiled with
2690 these debugging symbols defined. It will help highlight potential bugs in
2691 their own code, and will improve the test coverage for OpenSSL itself. At
2692 some point, these tighter rules will become openssl's default to improve
2693 maintainability, though the assert()s and other overheads will remain only
2694 in debugging configurations. See bn.h for more details.
2695 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2697 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2698 that can only be obtained through BN_CTX_new() (which implicitly
2699 initialises it). The presence of this function only made it possible
2700 to overwrite an existing structure (and cause memory leaks).
2703 *) Because of the callback-based approach for implementing LHASH as a
2704 template type, lh_insert() adds opaque objects to hash-tables and
2705 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2706 to clean up those corresponding objects before destroying the hash table
2707 (and losing the object pointers). So some over-zealous constifications in
2708 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2709 objects as "const" and the lh_doall[_arg] callback wrappers are not
2710 prototyped to have "const" restrictions on the object pointers they are
2711 given (and so aren't required to cast them away any more).
2714 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2715 (speed) prefers to use its own implementation. The two implementations
2716 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2717 its object type properly exposed (MS_TM) instead of casting to/from "char
2718 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2719 aren't necessarily the greatest nomenclatures - but this is what was used
2720 internally to the implementation so I've used that for now.
2723 *) Ensure that deprecated functions do not get compiled when
2724 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2725 the self-tests were still using deprecated key-generation functions so
2726 these have been updated also.
2729 *) Reorganise PKCS#7 code to separate the digest location functionality
2730 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2731 New function PKCS7_set_digest() to set the digest type for PKCS#7
2732 digestedData type. Add additional code to correctly generate the
2733 digestedData type and add support for this type in PKCS7 initialization
2737 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2738 structure of type "other".
2741 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2742 sure the loop does correctly stop and breaking ("division by zero")
2743 modulus operations are not performed. The (pre-generated) prime
2744 table crypto/bn/bn_prime.h was already correct, but it could not be
2745 re-generated on some platforms because of the "division by zero"
2746 situation in the script.
2747 [Ralf S. Engelschall]
2749 *) Update support for ECC-based TLS ciphersuites according to
2750 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2751 SHA-1 now is only used for "small" curves (where the
2752 representation of a field element takes up to 24 bytes); for
2753 larger curves, the field element resulting from ECDH is directly
2754 used as premaster secret.
2755 [Douglas Stebila (Sun Microsystems Laboratories)]
2757 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2758 curve secp160r1 to the tests.
2759 [Douglas Stebila (Sun Microsystems Laboratories)]
2761 *) Add the possibility to load symbols globally with DSO.
2762 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2764 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2765 control of the error stack.
2768 *) Add support for STORE in ENGINE.
2771 *) Add the STORE type. The intention is to provide a common interface
2772 to certificate and key stores, be they simple file-based stores, or
2773 HSM-type store, or LDAP stores, or...
2774 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2777 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2778 pass a list of arguments to any function as well as provide a way
2779 for a function to pass data back to the caller.
2782 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2783 works like BUF_strdup() but can be used to duplicate a portion of
2784 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2788 *) Add the function sk_find_ex() which works like sk_find(), but will
2789 return an index to an element even if an exact match couldn't be
2790 found. The index is guaranteed to point at the element where the
2791 searched-for key would be inserted to preserve sorting order.
2794 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2795 takes an extra flags argument for optional functionality. Currently,
2796 the following flags are defined:
2798 OBJ_BSEARCH_VALUE_ON_NOMATCH
2799 This one gets OBJ_bsearch_ex() to return a pointer to the first
2800 element where the comparing function returns a negative or zero
2803 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2804 This one gets OBJ_bsearch_ex() to return a pointer to the first
2805 element where the comparing function returns zero. This is useful
2806 if there are more than one element where the comparing function
2810 *) Make it possible to create self-signed certificates with 'openssl ca'
2811 in such a way that the self-signed certificate becomes part of the
2812 CA database and uses the same mechanisms for serial number generation
2813 as all other certificate signing. The new flag '-selfsign' enables
2814 this functionality. Adapt CA.sh and CA.pl.in.
2817 *) Add functionality to check the public key of a certificate request
2818 against a given private. This is useful to check that a certificate
2819 request can be signed by that key (self-signing).
2822 *) Make it possible to have multiple active certificates with the same
2823 subject in the CA index file. This is done only if the keyword
2824 'unique_subject' is set to 'no' in the main CA section (default
2825 if 'CA_default') of the configuration file. The value is saved
2826 with the database itself in a separate index attribute file,
2827 named like the index file with '.attr' appended to the name.
2830 *) Generate muti valued AVAs using '+' notation in config files for
2834 *) Support for nameConstraints certificate extension.
2837 *) Support for policyConstraints certificate extension.
2840 *) Support for policyMappings certificate extension.
2843 *) Make sure the default DSA_METHOD implementation only uses its
2844 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2845 and change its own handlers to be NULL so as to remove unnecessary
2846 indirection. This lets alternative implementations fallback to the
2847 default implementation more easily.
2850 *) Support for directoryName in GeneralName related extensions
2854 *) Make it possible to link applications using Makefile.shared.
2855 Make that possible even when linking against static libraries!
2858 *) Support for single pass processing for S/MIME signing. This now
2859 means that S/MIME signing can be done from a pipe, in addition
2860 cleartext signing (multipart/signed type) is effectively streaming
2861 and the signed data does not need to be all held in memory.
2863 This is done with a new flag PKCS7_STREAM. When this flag is set
2864 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2865 is done after the data is output (and digests calculated) in
2866 SMIME_write_PKCS7().
2869 *) Add full support for -rpath/-R, both in shared libraries and
2870 applications, at least on the platforms where it's known how
2874 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2875 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2876 will now compute a table of multiples of the generator that
2877 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2878 faster (notably in the case of a single point multiplication,
2879 scalar * generator).
2880 [Nils Larsch, Bodo Moeller]
2882 *) IPv6 support for certificate extensions. The various extensions
2883 which use the IP:a.b.c.d can now take IPv6 addresses using the
2884 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2888 *) Added an ENGINE that implements RSA by performing private key
2889 exponentiations with the GMP library. The conversions to and from
2890 GMP's mpz_t format aren't optimised nor are any montgomery forms
2891 cached, and on x86 it appears OpenSSL's own performance has caught up.
2892 However there are likely to be other architectures where GMP could
2893 provide a boost. This ENGINE is not built in by default, but it can be
2894 specified at Configure time and should be accompanied by the necessary
2895 linker additions, eg;
2896 ./config -DOPENSSL_USE_GMP -lgmp
2899 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2900 testing availability of engines with "-t" - the old behaviour is
2901 produced by increasing the feature's verbosity with "-tt".
2904 *) ECDSA routines: under certain error conditions uninitialized BN objects
2905 could be freed. Solution: make sure initialization is performed early
2906 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2910 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2911 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2912 software implementations. For DSA and DH, parameter generation can
2913 also be overriden by providing the appropriate method callbacks.
2916 *) Change the "progress" mechanism used in key-generation and
2917 primality testing to functions that take a new BN_GENCB pointer in
2918 place of callback/argument pairs. The new API functions have "_ex"
2919 postfixes and the older functions are reimplemented as wrappers for
2920 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2921 declarations of the old functions to help (graceful) attempts to
2922 migrate to the new functions. Also, the new key-generation API
2923 functions operate on a caller-supplied key-structure and return
2924 success/failure rather than returning a key or NULL - this is to
2925 help make "keygen" another member function of RSA_METHOD etc.
2927 Example for using the new callback interface:
2929 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2933 BN_GENCB_set(&my_cb, my_callback, my_arg);
2935 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2936 /* For the meaning of a, b in calls to my_callback(), see the
2937 * documentation of the function that calls the callback.
2938 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2939 * my_callback should return 1 if it wants BN_is_prime_ex()
2940 * to continue, or 0 to stop.
2945 *) Change the ZLIB compression method to be stateful, and make it
2946 available to TLS with the number defined in
2947 draft-ietf-tls-compression-04.txt.
2950 *) Add the ASN.1 structures and functions for CertificatePair, which
2951 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2953 CertificatePair ::= SEQUENCE {
2954 forward [0] Certificate OPTIONAL,
2955 reverse [1] Certificate OPTIONAL,
2956 -- at least one of the pair shall be present -- }
2958 Also implement the PEM functions to read and write certificate
2959 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2961 This needed to be defined, mostly for the sake of the LDAP
2962 attribute crossCertificatePair, but may prove useful elsewhere as
2966 *) Make it possible to inhibit symlinking of shared libraries in
2967 Makefile.shared, for Cygwin's sake.
2970 *) Extend the BIGNUM API by creating a function
2971 void BN_set_negative(BIGNUM *a, int neg);
2972 and a macro that behave like
2973 int BN_is_negative(const BIGNUM *a);
2975 to avoid the need to access 'a->neg' directly in applications.
2978 *) Implement fast modular reduction for pseudo-Mersenne primes
2979 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2980 EC_GROUP_new_curve_GFp() will now automatically use this
2982 [Nils Larsch <nla@trustcenter.de>]
2984 *) Add new lock type (CRYPTO_LOCK_BN).
2987 *) Change the ENGINE framework to automatically load engines
2988 dynamically from specific directories unless they could be
2989 found to already be built in or loaded. Move all the
2990 current engines except for the cryptodev one to a new
2992 The engines in engines/ are built as shared libraries if
2993 the "shared" options was given to ./Configure or ./config.
2994 Otherwise, they are inserted in libcrypto.a.
2995 /usr/local/ssl/engines is the default directory for dynamic
2996 engines, but that can be overriden at configure time through
2997 the usual use of --prefix and/or --openssldir, and at run
2998 time with the environment variable OPENSSL_ENGINES.
2999 [Geoff Thorpe and Richard Levitte]
3001 *) Add Makefile.shared, a helper makefile to build shared
3002 libraries. Addapt Makefile.org.
3005 *) Add version info to Win32 DLLs.
3006 [Peter 'Luna' Runestig" <peter@runestig.com>]
3008 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3009 can be added using this API to created arbitrary PKCS#12
3010 files while avoiding the low level API.
3012 New options to PKCS12_create(), key or cert can be NULL and
3013 will then be omitted from the output file. The encryption
3014 algorithm NIDs can be set to -1 for no encryption, the mac
3015 iteration count can be set to 0 to omit the mac.
3017 Enhance pkcs12 utility by making the -nokeys and -nocerts
3018 options work when creating a PKCS#12 file. New option -nomac
3019 to omit the mac, NONE can be set for an encryption algorithm.
3020 New code is modified to use the enhanced PKCS12_create()
3021 instead of the low level API.
3024 *) Extend ASN1 encoder to support indefinite length constructed
3025 encoding. This can output sequences tags and octet strings in
3026 this form. Modify pk7_asn1.c to support indefinite length
3027 encoding. This is experimental and needs additional code to
3028 be useful, such as an ASN1 bio and some enhanced streaming
3031 Extend template encode functionality so that tagging is passed
3032 down to the template encoder.
3035 *) Let 'openssl req' fail if an argument to '-newkey' is not
3036 recognized instead of using RSA as a default.
3039 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3040 As these are not official, they are not included in "ALL";
3041 the "ECCdraft" ciphersuite group alias can be used to select them.
3042 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3044 *) Add ECDH engine support.
3045 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3047 *) Add ECDH in new directory crypto/ecdh/.
3048 [Douglas Stebila (Sun Microsystems Laboratories)]
3050 *) Let BN_rand_range() abort with an error after 100 iterations
3051 without success (which indicates a broken PRNG).
3054 *) Change BN_mod_sqrt() so that it verifies that the input value
3055 is really the square of the return value. (Previously,
3056 BN_mod_sqrt would show GIGO behaviour.)
3059 *) Add named elliptic curves over binary fields from X9.62, SECG,
3060 and WAP/WTLS; add OIDs that were still missing.
3062 [Sheueling Chang Shantz and Douglas Stebila
3063 (Sun Microsystems Laboratories)]
3065 *) Extend the EC library for elliptic curves over binary fields
3066 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3069 EC_GF2m_simple_method
3073 EC_GROUP_new_curve_GF2m
3074 EC_GROUP_set_curve_GF2m
3075 EC_GROUP_get_curve_GF2m
3076 EC_POINT_set_affine_coordinates_GF2m
3077 EC_POINT_get_affine_coordinates_GF2m
3078 EC_POINT_set_compressed_coordinates_GF2m
3080 Point compression for binary fields is disabled by default for
3081 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3084 As binary polynomials are represented as BIGNUMs, various members
3085 of the EC_GROUP and EC_POINT data structures can be shared
3086 between the implementations for prime fields and binary fields;
3087 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3088 are essentially identical to their ..._GFp counterparts.
3089 (For simplicity, the '..._GFp' prefix has been dropped from
3090 various internal method names.)
3092 An internal 'field_div' method (similar to 'field_mul' and
3093 'field_sqr') has been added; this is used only for binary fields.
3095 [Sheueling Chang Shantz and Douglas Stebila
3096 (Sun Microsystems Laboratories)]
3098 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3099 through methods ('mul', 'precompute_mult').
3101 The generic implementations (now internally called 'ec_wNAF_mul'
3102 and 'ec_wNAF_precomputed_mult') remain the default if these
3103 methods are undefined.
3105 [Sheueling Chang Shantz and Douglas Stebila
3106 (Sun Microsystems Laboratories)]
3108 *) New function EC_GROUP_get_degree, which is defined through
3109 EC_METHOD. For curves over prime fields, this returns the bit
3110 length of the modulus.
3112 [Sheueling Chang Shantz and Douglas Stebila
3113 (Sun Microsystems Laboratories)]
3115 *) New functions EC_GROUP_dup, EC_POINT_dup.
3116 (These simply call ..._new and ..._copy).
3118 [Sheueling Chang Shantz and Douglas Stebila
3119 (Sun Microsystems Laboratories)]
3121 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3122 Polynomials are represented as BIGNUMs (where the sign bit is not
3123 used) in the following functions [macros]:
3126 BN_GF2m_sub [= BN_GF2m_add]
3127 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3128 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3129 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3131 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3132 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3133 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3134 BN_GF2m_cmp [= BN_ucmp]
3136 (Note that only the 'mod' functions are actually for fields GF(2^m).
3137 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3139 For some functions, an the irreducible polynomial defining a
3140 field can be given as an 'unsigned int[]' with strictly
3141 decreasing elements giving the indices of those bits that are set;
3142 i.e., p[] represents the polynomial
3143 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3145 p[0] > p[1] > ... > p[k] = 0.
3146 This applies to the following functions:
3151 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3152 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3154 BN_GF2m_mod_sqrt_arr
3155 BN_GF2m_mod_solve_quad_arr
3159 Conversion can be performed by the following functions:
3164 bntest.c has additional tests for binary polynomial arithmetic.
3166 Two implementations for BN_GF2m_mod_div() are available.
3167 The default algorithm simply uses BN_GF2m_mod_inv() and
3168 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3169 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3170 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3172 [Sheueling Chang Shantz and Douglas Stebila
3173 (Sun Microsystems Laboratories)]
3175 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3176 functionality is disabled at compile-time.
3177 [Douglas Stebila <douglas.stebila@sun.com>]
3179 *) Change default behaviour of 'openssl asn1parse' so that more
3180 information is visible when viewing, e.g., a certificate:
3182 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3183 mode the content of non-printable OCTET STRINGs is output in a
3184 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3185 avoid the appearance of a printable string.
3186 [Nils Larsch <nla@trustcenter.de>]
3188 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3190 EC_GROUP_set_asn1_flag()
3191 EC_GROUP_get_asn1_flag()
3192 EC_GROUP_set_point_conversion_form()
3193 EC_GROUP_get_point_conversion_form()
3194 These control ASN1 encoding details:
3195 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3196 has been set to OPENSSL_EC_NAMED_CURVE.
3197 - Points are encoded in uncompressed form by default; options for
3198 asn1_for are as for point2oct, namely
3199 POINT_CONVERSION_COMPRESSED
3200 POINT_CONVERSION_UNCOMPRESSED
3201 POINT_CONVERSION_HYBRID
3203 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3206 EC_GROUP_get0_seed()
3207 EC_GROUP_get_seed_len()
3208 This is used only for ASN1 purposes (so far).
3209 [Nils Larsch <nla@trustcenter.de>]
3211 *) Add 'field_type' member to EC_METHOD, which holds the NID
3212 of the appropriate field type OID. The new function
3213 EC_METHOD_get_field_type() returns this value.
3214 [Nils Larsch <nla@trustcenter.de>]
3219 EC_POINT_point2hex()
3220 EC_POINT_hex2point()
3221 providing useful interfaces to EC_POINT_point2oct() and
3222 EC_POINT_oct2point().
3223 [Nils Larsch <nla@trustcenter.de>]
3225 *) Change internals of the EC library so that the functions
3226 EC_GROUP_set_generator()
3227 EC_GROUP_get_generator()
3228 EC_GROUP_get_order()
3229 EC_GROUP_get_cofactor()
3230 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3231 to methods, which would lead to unnecessary code duplication when
3232 adding different types of curves.
3233 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3235 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3236 arithmetic, and such that modified wNAFs are generated
3237 (which avoid length expansion in many cases).
3240 *) Add a function EC_GROUP_check_discriminant() (defined via
3241 EC_METHOD) that verifies that the curve discriminant is non-zero.
3243 Add a function EC_GROUP_check() that makes some sanity tests
3244 on a EC_GROUP, its generator and order. This includes
3245 EC_GROUP_check_discriminant().
3246 [Nils Larsch <nla@trustcenter.de>]
3248 *) Add ECDSA in new directory crypto/ecdsa/.
3250 Add applications 'openssl ecparam' and 'openssl ecdsa'
3251 (these are based on 'openssl dsaparam' and 'openssl dsa').
3253 ECDSA support is also included in various other files across the
3254 library. Most notably,
3255 - 'openssl req' now has a '-newkey ecdsa:file' option;
3256 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3257 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3258 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3259 them suitable for ECDSA where domain parameters must be
3260 extracted before the specific public key;
3261 - ECDSA engine support has been added.
3262 [Nils Larsch <nla@trustcenter.de>]
3264 *) Include some named elliptic curves, and add OIDs from X9.62,
3265 SECG, and WAP/WTLS. Each curve can be obtained from the new
3267 EC_GROUP_new_by_curve_name(),
3268 and the list of available named curves can be obtained with
3269 EC_get_builtin_curves().
3270 Also add a 'curve_name' member to EC_GROUP objects, which can be
3272 EC_GROUP_set_curve_name()
3273 EC_GROUP_get_curve_name()
3274 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3276 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3277 was actually never needed) and in BN_mul(). The removal in BN_mul()
3278 required a small change in bn_mul_part_recursive() and the addition
3279 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3280 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3281 bn_sub_words() and bn_add_words() except they take arrays with
3285 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3287 *) Cleanse PEM buffers before freeing them since they may contain
3289 [Benjamin Bennett <ben@psc.edu>]
3291 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3292 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3293 authentication-only ciphersuites.
3296 *) Since AES128 and AES256 share a single mask bit in the logic of
3297 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3298 kludge to work properly if AES128 is available and AES256 isn't.
3301 *) Expand security boundary to match 1.1.1 module.
3304 *) Remove redundant features: hash file source, editing of test vectors
3305 modify fipsld to use external fips_premain.c signature.
3308 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3309 run algorithm test programs.
3312 *) Make algorithm test programs more tolerant of whitespace.
3315 *) Have SSL/TLS server implementation tolerate "mismatched" record
3316 protocol version while receiving ClientHello even if the
3317 ClientHello is fragmented. (The server can't insist on the
3318 particular protocol version it has chosen before the ServerHello
3319 message has informed the client about his choice.)
3322 *) Load error codes if they are not already present instead of using a
3323 static variable. This allows them to be cleanly unloaded and reloaded.
3326 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3328 *) Introduce limits to prevent malicious keys being able to
3329 cause a denial of service. (CVE-2006-2940)
3330 [Steve Henson, Bodo Moeller]
3332 *) Fix ASN.1 parsing of certain invalid structures that can result
3333 in a denial of service. (CVE-2006-2937) [Steve Henson]
3335 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3336 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3338 *) Fix SSL client code which could crash if connecting to a
3339 malicious SSLv2 server. (CVE-2006-4343)
3340 [Tavis Ormandy and Will Drewry, Google Security Team]
3342 *) Change ciphersuite string processing so that an explicit
3343 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3344 will no longer include "AES128-SHA"), and any other similar
3345 ciphersuite (same bitmap) from *other* protocol versions (so that
3346 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3347 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3348 changes from 0.9.8b and 0.9.8d.
3351 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3353 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3354 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3356 *) Change the Unix randomness entropy gathering to use poll() when
3357 possible instead of select(), since the latter has some
3358 undesirable limitations.
3359 [Darryl Miles via Richard Levitte and Bodo Moeller]
3361 *) Disable rogue ciphersuites:
3363 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3364 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3365 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3367 The latter two were purportedly from
3368 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3371 Also deactive the remaining ciphersuites from
3372 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3373 unofficial, and the ID has long expired.
3376 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3377 dual-core machines) and other potential thread-safety issues.
3380 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3382 *) Adapt fipsld and the build system to link against the validated FIPS
3383 module in FIPS mode.
3386 *) Fixes for VC++ 2005 build under Windows.
3389 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3390 from a Windows bash shell such as MSYS. It is autodetected from the
3391 "config" script when run from a VC++ environment. Modify standard VC++
3392 build to use fipscanister.o from the GNU make build.
3395 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3397 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3398 The value now differs depending on if you build for FIPS or not.
3399 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3400 safely run with a non-FIPSed libcrypto, as it may crash because of
3401 the difference induced by this change.
3404 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3406 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3407 (part of SSL_OP_ALL). This option used to disable the
3408 countermeasure against man-in-the-middle protocol-version
3409 rollback in the SSL 2.0 server implementation, which is a bad
3410 idea. (CVE-2005-2969)
3412 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3413 for Information Security, National Institute of Advanced Industrial
3414 Science and Technology [AIST], Japan)]
3416 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3417 mainly for FIPS compliance and not fully integrated at this stage.
3420 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3421 the exponentiation using a fixed-length exponent. (Otherwise,
3422 the information leaked through timing could expose the secret key
3423 after many signatures; cf. Bleichenbacher's attack on DSA with
3427 *) Make a new fixed-window mod_exp implementation the default for
3428 RSA, DSA, and DH private-key operations so that the sequence of
3429 squares and multiplies and the memory access pattern are
3430 independent of the particular secret key. This will mitigate
3431 cache-timing and potential related attacks.
3433 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3434 and this is automatically used by BN_mod_exp_mont() if the new flag
3435 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3436 will use this BN flag for private exponents unless the flag
3437 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3438 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3440 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3442 *) Change the client implementation for SSLv23_method() and
3443 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3444 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3445 (Previously, the SSL 2.0 backwards compatible Client Hello
3446 message format would be used even with SSL_OP_NO_SSLv2.)
3449 *) Add support for smime-type MIME parameter in S/MIME messages which some
3453 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3454 a threadsafe manner. Modify rsa code to use new function and add calls
3455 to dsa and dh code (which had race conditions before).
3458 *) Include the fixed error library code in the C error file definitions
3459 instead of fixing them up at runtime. This keeps the error code
3460 structures constant.
3463 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3465 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3468 *) Fixes for newer kerberos headers. NB: the casts are needed because
3469 the 'length' field is signed on one version and unsigned on another
3470 with no (?) obvious way to tell the difference, without these VC++
3471 complains. Also the "definition" of FAR (blank) is no longer included
3472 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3473 some needed definitions.
3476 *) Undo Cygwin change.
3479 *) Added support for proxy certificates according to RFC 3820.
3480 Because they may be a security thread to unaware applications,
3481 they must be explicitely allowed in run-time. See
3482 docs/HOWTO/proxy_certificates.txt for further information.
3485 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3487 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3488 server and client random values. Previously
3489 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3490 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3492 This change has negligible security impact because:
3494 1. Server and client random values still have 24 bytes of pseudo random
3497 2. Server and client random values are sent in the clear in the initial
3500 3. The master secret is derived using the premaster secret (48 bytes in
3501 size for static RSA ciphersuites) as well as client server and random
3504 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3507 [Stephen Henson, reported by UK NISCC]
3509 *) Use Windows randomness collection on Cygwin.
3512 *) Fix hang in EGD/PRNGD query when communication socket is closed
3513 prematurely by EGD/PRNGD.
3514 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3516 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3519 *) Back-port of selected performance improvements from development
3520 branch, as well as improved support for PowerPC platforms.
3523 *) Add lots of checks for memory allocation failure, error codes to indicate
3524 failure and freeing up memory if a failure occurs.
3525 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3527 *) Add new -passin argument to dgst.
3530 *) Perform some character comparisons of different types in X509_NAME_cmp:
3531 this is needed for some certificates that reencode DNs into UTF8Strings
3532 (in violation of RFC3280) and can't or wont issue name rollover
3536 *) Make an explicit check during certificate validation to see that
3537 the CA setting in each certificate on the chain is correct. As a
3538 side effect always do the following basic checks on extensions,
3539 not just when there's an associated purpose to the check:
3541 - if there is an unhandled critical extension (unless the user
3542 has chosen to ignore this fault)
3543 - if the path length has been exceeded (if one is set at all)
3544 - that certain extensions fit the associated purpose (if one has
3548 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3550 *) Avoid a race condition when CRLs are checked in a multi threaded
3551 environment. This would happen due to the reordering of the revoked
3552 entries during signature checking and serial number lookup. Now the
3553 encoding is cached and the serial number sort performed under a lock.
3554 Add new STACK function sk_is_sorted().
3557 *) Add Delta CRL to the extension code.
3560 *) Various fixes to s3_pkt.c so alerts are sent properly.
3561 [David Holmes <d.holmes@f5.com>]
3563 *) Reduce the chances of duplicate issuer name and serial numbers (in
3564 violation of RFC3280) using the OpenSSL certificate creation utilities.
3565 This is done by creating a random 64 bit value for the initial serial
3566 number when a serial number file is created or when a self signed
3567 certificate is created using 'openssl req -x509'. The initial serial
3568 number file is created using 'openssl x509 -next_serial' in CA.pl
3569 rather than being initialized to 1.
3572 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3574 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3575 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3576 [Joe Orton, Steve Henson]
3578 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3580 [Joe Orton, Steve Henson]
3582 *) Make it possible to have multiple active certificates with the same
3583 subject in the CA index file. This is done only if the keyword
3584 'unique_subject' is set to 'no' in the main CA section (default
3585 if 'CA_default') of the configuration file. The value is saved
3586 with the database itself in a separate index attribute file,
3587 named like the index file with '.attr' appended to the name.
3590 *) X509 verify fixes. Disable broken certificate workarounds when
3591 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3592 keyUsage extension present. Don't accept CRLs with unhandled critical
3593 extensions: since verify currently doesn't process CRL extensions this
3594 rejects a CRL with *any* critical extensions. Add new verify error codes
3598 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3599 A clarification of RFC2560 will require the use of OCTET STRINGs and
3600 some implementations cannot handle the current raw format. Since OpenSSL
3601 copies and compares OCSP nonces as opaque blobs without any attempt at
3602 parsing them this should not create any compatibility issues.
3605 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3606 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3607 this HMAC (and other) operations are several times slower than OpenSSL
3611 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3612 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3614 *) Use the correct content when signing type "other".
3617 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3619 *) Fix various bugs revealed by running the NISCC test suite:
3621 Stop out of bounds reads in the ASN1 code when presented with
3622 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3624 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3626 If verify callback ignores invalid public key errors don't try to check
3627 certificate signature with the NULL public key.
3631 *) New -ignore_err option in ocsp application to stop the server
3632 exiting on the first error in a request.
3635 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3636 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3640 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3641 extra data after the compression methods not only for TLS 1.0
3642 but also for SSL 3.0 (as required by the specification).
3643 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3645 *) Change X509_certificate_type() to mark the key as exported/exportable
3646 when it's 512 *bits* long, not 512 bytes.
3649 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3650 blocks during encryption.
3653 *) Various fixes to base64 BIO and non blocking I/O. On write
3654 flushes were not handled properly if the BIO retried. On read
3655 data was not being buffered properly and had various logic bugs.
3656 This also affects blocking I/O when the data being decoded is a
3660 *) Various S/MIME bugfixes and compatibility changes:
3661 output correct application/pkcs7 MIME type if
3662 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3663 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3664 of files as .eml work). Correctly handle very long lines in MIME
3668 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3670 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3671 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3672 a protocol version number mismatch like a decryption error
3673 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3676 *) Turn on RSA blinding by default in the default implementation
3677 to avoid a timing attack. Applications that don't want it can call
3678 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3679 They would be ill-advised to do so in most cases.
3680 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3682 *) Change RSA blinding code so that it works when the PRNG is not
3683 seeded (in this case, the secret RSA exponent is abused as
3684 an unpredictable seed -- if it is not unpredictable, there
3685 is no point in blinding anyway). Make RSA blinding thread-safe
3686 by remembering the creator's thread ID in rsa->blinding and
3687 having all other threads use local one-time blinding factors
3688 (this requires more computation than sharing rsa->blinding, but
3689 avoids excessive locking; and if an RSA object is not shared
3690 between threads, blinding will still be very fast).
3693 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3694 ENGINE as defaults for all supported algorithms irrespective of
3695 the 'flags' parameter. 'flags' is now honoured, so applications
3696 should make sure they are passing it correctly.
3699 *) Target "mingw" now allows native Windows code to be generated in
3700 the Cygwin environment as well as with the MinGW compiler.
3703 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3705 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3706 via timing by performing a MAC computation even if incorrrect
3707 block cipher padding has been found. This is a countermeasure
3708 against active attacks where the attacker has to distinguish
3709 between bad padding and a MAC verification error. (CVE-2003-0078)
3711 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3712 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3713 Martin Vuagnoux (EPFL, Ilion)]
3715 *) Make the no-err option work as intended. The intention with no-err
3716 is not to have the whole error stack handling routines removed from
3717 libcrypto, it's only intended to remove all the function name and
3718 reason texts, thereby removing some of the footprint that may not
3719 be interesting if those errors aren't displayed anyway.
3721 NOTE: it's still possible for any application or module to have it's
3722 own set of error texts inserted. The routines are there, just not
3723 used by default when no-err is given.
3726 *) Add support for FreeBSD on IA64.
3727 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3729 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3730 Kerberos function mit_des_cbc_cksum(). Before this change,
3731 the value returned by DES_cbc_cksum() was like the one from
3732 mit_des_cbc_cksum(), except the bytes were swapped.
3733 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3735 *) Allow an application to disable the automatic SSL chain building.
3736 Before this a rather primitive chain build was always performed in
3737 ssl3_output_cert_chain(): an application had no way to send the
3738 correct chain if the automatic operation produced an incorrect result.
3740 Now the chain builder is disabled if either:
3742 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3744 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3746 The reasoning behind this is that an application would not want the
3747 auto chain building to take place if extra chain certificates are
3748 present and it might also want a means of sending no additional
3749 certificates (for example the chain has two certificates and the
3753 *) Add the possibility to build without the ENGINE framework.
3754 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3756 *) Under Win32 gmtime() can return NULL: check return value in
3757 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3760 *) DSA routines: under certain error conditions uninitialized BN objects
3761 could be freed. Solution: make sure initialization is performed early
3762 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3763 Nils Larsch <nla@trustcenter.de> via PR#459)
3766 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3767 checked on reconnect on the client side, therefore session resumption
3768 could still fail with a "ssl session id is different" error. This
3769 behaviour is masked when SSL_OP_ALL is used due to
3770 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3771 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3772 followup to PR #377.
3775 *) IA-32 assembler support enhancements: unified ELF targets, support
3776 for SCO/Caldera platforms, fix for Cygwin shared build.
3779 *) Add support for FreeBSD on sparc64. As a consequence, support for
3780 FreeBSD on non-x86 processors is separate from x86 processors on
3781 the config script, much like the NetBSD support.
3782 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3784 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3786 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3789 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3790 code (06) was taken as the first octet of the session ID and the last
3791 octet was ignored consequently. As a result SSLv2 client side session
3792 caching could not have worked due to the session ID mismatch between
3794 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3798 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3799 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3803 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3804 seems that in spite of existing for more than a year, many application
3805 author have done nothing to provide the necessary callbacks, which
3806 means that this particular engine will not work properly anywhere.
3807 This is a very unfortunate situation which forces us, in the name
3808 of usability, to give the hw_ncipher.c a static lock, which is part
3810 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3811 appear in 0.9.8 or later. We EXPECT application authors to have
3812 dealt properly with this when 0.9.8 is released (unless we actually
3813 make such changes in the libcrypto locking code that changes will
3814 have to be made anyway).
3817 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3818 octets have been read, EOF or an error occurs. Without this change
3819 some truncated ASN1 structures will not produce an error.
3822 *) Disable Heimdal support, since it hasn't been fully implemented.
3823 Still give the possibility to force the use of Heimdal, but with
3824 warnings and a request that patches get sent to openssl-dev.
3827 *) Add the VC-CE target, introduce the WINCE sysname, and add
3828 INSTALL.WCE and appropriate conditionals to make it build.
3829 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3831 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3832 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3833 edit numbers of the version.
3834 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3836 *) Introduce safe string copy and catenation functions
3837 (BUF_strlcpy() and BUF_strlcat()).
3838 [Ben Laurie (CHATS) and Richard Levitte]
3840 *) Avoid using fixed-size buffers for one-line DNs.
3841 [Ben Laurie (CHATS)]
3843 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3844 resizing buffers containing secrets, and use where appropriate.
3845 [Ben Laurie (CHATS)]
3847 *) Avoid using fixed size buffers for configuration file location.
3848 [Ben Laurie (CHATS)]
3850 *) Avoid filename truncation for various CA files.
3851 [Ben Laurie (CHATS)]
3853 *) Use sizeof in preference to magic numbers.
3854 [Ben Laurie (CHATS)]
3856 *) Avoid filename truncation in cert requests.
3857 [Ben Laurie (CHATS)]
3859 *) Add assertions to check for (supposedly impossible) buffer
3861 [Ben Laurie (CHATS)]
3863 *) Don't cache truncated DNS entries in the local cache (this could
3864 potentially lead to a spoofing attack).
3865 [Ben Laurie (CHATS)]
3867 *) Fix various buffers to be large enough for hex/decimal
3868 representations in a platform independent manner.
3869 [Ben Laurie (CHATS)]
3871 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3872 resizing buffers containing secrets, and use where appropriate.
3873 [Ben Laurie (CHATS)]
3875 *) Add BIO_indent() to avoid much slightly worrying code to do
3877 [Ben Laurie (CHATS)]
3879 *) Convert sprintf()/BIO_puts() to BIO_printf().
3880 [Ben Laurie (CHATS)]
3882 *) buffer_gets() could terminate with the buffer only half
3884 [Ben Laurie (CHATS)]
3886 *) Add assertions to prevent user-supplied crypto functions from
3887 overflowing internal buffers by having large block sizes, etc.
3888 [Ben Laurie (CHATS)]
3890 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3892 [Ben Laurie (CHATS)]
3894 *) Eliminate unused copy of key in RC4.
3895 [Ben Laurie (CHATS)]
3897 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3898 [Ben Laurie (CHATS)]
3900 *) Fix off-by-one error in EGD path.
3901 [Ben Laurie (CHATS)]
3903 *) If RANDFILE path is too long, ignore instead of truncating.
3904 [Ben Laurie (CHATS)]
3906 *) Eliminate unused and incorrectly sized X.509 structure
3908 [Ben Laurie (CHATS)]
3910 *) Eliminate unused and dangerous function knumber().
3911 [Ben Laurie (CHATS)]
3913 *) Eliminate unused and dangerous structure, KSSL_ERR.
3914 [Ben Laurie (CHATS)]
3916 *) Protect against overlong session ID context length in an encoded
3917 session object. Since these are local, this does not appear to be
3919 [Ben Laurie (CHATS)]
3921 *) Change from security patch (see 0.9.6e below) that did not affect
3922 the 0.9.6 release series:
3924 Remote buffer overflow in SSL3 protocol - an attacker could
3925 supply an oversized master key in Kerberos-enabled versions.
3927 [Ben Laurie (CHATS)]
3929 *) Change the SSL kerb5 codes to match RFC 2712.
3932 *) Make -nameopt work fully for req and add -reqopt switch.
3933 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3935 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3936 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3938 *) Make sure tests can be performed even if the corresponding algorithms
3939 have been removed entirely. This was also the last step to make
3940 OpenSSL compilable with DJGPP under all reasonable conditions.
3941 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3943 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3944 to allow version independent disabling of normally unselected ciphers,
3945 which may be activated as a side-effect of selecting a single cipher.
3947 (E.g., cipher list string "RSA" enables ciphersuites that are left
3948 out of "ALL" because they do not provide symmetric encryption.
3949 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3950 [Lutz Jaenicke, Bodo Moeller]
3952 *) Add appropriate support for separate platform-dependent build
3953 directories. The recommended way to make a platform-dependent
3954 build directory is the following (tested on Linux), maybe with
3957 # Place yourself outside of the OpenSSL source tree. In
3958 # this example, the environment variable OPENSSL_SOURCE
3959 # is assumed to contain the absolute OpenSSL source directory.
3960 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3961 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3962 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3963 mkdir -p `dirname $F`
3964 ln -s $OPENSSL_SOURCE/$F $F
3967 To be absolutely sure not to disturb the source tree, a "make clean"
3968 is a good thing. If it isn't successfull, don't worry about it,
3969 it probably means the source directory is very clean.
3972 *) Make sure any ENGINE control commands make local copies of string
3973 pointers passed to them whenever necessary. Otherwise it is possible
3974 the caller may have overwritten (or deallocated) the original string
3975 data when a later ENGINE operation tries to use the stored values.
3976 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3978 *) Improve diagnostics in file reading and command-line digests.
3979 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3981 *) Add AES modes CFB and OFB to the object database. Correct an
3982 error in AES-CFB decryption.
3985 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3986 allows existing EVP_CIPHER_CTX structures to be reused after
3987 calling EVP_*Final(). This behaviour is used by encryption
3988 BIOs and some applications. This has the side effect that
3989 applications must explicitly clean up cipher contexts with
3990 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3993 *) Check the values of dna and dnb in bn_mul_recursive before calling
3994 bn_mul_comba (a non zero value means the a or b arrays do not contain
3995 n2 elements) and fallback to bn_mul_normal if either is not zero.
3998 *) Fix escaping of non-ASCII characters when using the -subj option
3999 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
4002 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
4003 form for "surname", serialNumber has no short form.
4004 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
4005 therefore remove "mail" short name for "internet 7".
4006 The OID for unique identifiers in X509 certificates is
4007 x500UniqueIdentifier, not uniqueIdentifier.
4008 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
4011 *) Add an "init" command to the ENGINE config module and auto initialize
4012 ENGINEs. Without any "init" command the ENGINE will be initialized
4013 after all ctrl commands have been executed on it. If init=1 the
4014 ENGINE is initailized at that point (ctrls before that point are run
4015 on the uninitialized ENGINE and after on the initialized one). If
4016 init=0 then the ENGINE will not be iniatialized at all.
4019 *) Fix the 'app_verify_callback' interface so that the user-defined
4020 argument is actually passed to the callback: In the
4021 SSL_CTX_set_cert_verify_callback() prototype, the callback
4022 declaration has been changed from
4025 int (*cb)(X509_STORE_CTX *,void *);
4026 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
4027 i=s->ctx->app_verify_callback(&ctx)
4028 has been changed into
4029 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
4031 To update applications using SSL_CTX_set_cert_verify_callback(),
4032 a dummy argument can be added to their callback functions.
4033 [D. K. Smetters <smetters@parc.xerox.com>]
4035 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
4036 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
4038 *) Add and OPENSSL_LOAD_CONF define which will cause
4039 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
4040 This allows older applications to transparently support certain
4041 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
4042 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
4043 load the config file and OPENSSL_add_all_algorithms_conf() which will
4044 always load it have also been added.
4047 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4048 Adjust NIDs and EVP layer.
4049 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4051 *) Config modules support in openssl utility.
4053 Most commands now load modules from the config file,
4054 though in a few (such as version) this isn't done
4055 because it couldn't be used for anything.
4057 In the case of ca and req the config file used is
4058 the same as the utility itself: that is the -config
4059 command line option can be used to specify an
4063 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4064 use "openssl_conf" if filename is NULL use default openssl config file.
4067 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4068 config section name. Add a new flag to tolerate a missing config file
4069 and move code to CONF_modules_load_file().
4072 *) Support for crypto accelerator cards from Accelerated Encryption
4073 Processing, www.aep.ie. (Use engine 'aep')
4074 The support was copied from 0.9.6c [engine] and adapted/corrected
4075 to work with the new engine framework.
4076 [AEP Inc. and Richard Levitte]
4078 *) Support for SureWare crypto accelerator cards from Baltimore
4079 Technologies. (Use engine 'sureware')
4080 The support was copied from 0.9.6c [engine] and adapted
4081 to work with the new engine framework.
4084 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4085 make the newer ENGINE framework commands for the CHIL engine work.
4086 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4088 *) Make it possible to produce shared libraries on ReliantUNIX.
4089 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4091 *) Add the configuration target debug-linux-ppro.
4092 Make 'openssl rsa' use the general key loading routines
4093 implemented in apps.c, and make those routines able to
4094 handle the key format FORMAT_NETSCAPE and the variant
4096 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4098 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4099 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4101 *) Add -keyform to rsautl, and document -engine.
4102 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4104 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4105 BIO_R_NO_SUCH_FILE error code rather than the generic
4106 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4109 *) Add new functions
4111 ERR_peek_last_error_line
4112 ERR_peek_last_error_line_data.
4113 These are similar to
4116 ERR_peek_error_line_data,
4117 but report on the latest error recorded rather than the first one
4118 still in the error queue.
4119 [Ben Laurie, Bodo Moeller]
4121 *) default_algorithms option in ENGINE config module. This allows things
4123 default_algorithms = ALL
4124 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4127 *) Prelminary ENGINE config module.
4130 *) New experimental application configuration code.
4133 *) Change the AES code to follow the same name structure as all other
4134 symmetric ciphers, and behave the same way. Move everything to
4135 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4136 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4138 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4139 [Ben Laurie and Theo de Raadt]
4141 *) Add option to output public keys in req command.
4142 [Massimiliano Pala madwolf@openca.org]
4144 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4145 (up to about 10% better than before for P-192 and P-224).
4148 *) New functions/macros
4150 SSL_CTX_set_msg_callback(ctx, cb)
4151 SSL_CTX_set_msg_callback_arg(ctx, arg)
4152 SSL_set_msg_callback(ssl, cb)
4153 SSL_set_msg_callback_arg(ssl, arg)
4155 to request calling a callback function
4157 void cb(int write_p, int version, int content_type,
4158 const void *buf, size_t len, SSL *ssl, void *arg)
4160 whenever a protocol message has been completely received
4161 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4162 protocol version according to which the SSL library interprets
4163 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4164 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4165 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4166 specification (change_cipher_spec(20), alert(21), handshake(22)).
4167 'buf' and 'len' point to the actual message, 'ssl' to the
4168 SSL object, and 'arg' is the application-defined value set by
4169 SSL[_CTX]_set_msg_callback_arg().
4171 'openssl s_client' and 'openssl s_server' have new '-msg' options
4172 to enable a callback that displays all protocol messages.
4175 *) Change the shared library support so shared libraries are built as
4176 soon as the corresponding static library is finished, and thereby get
4177 openssl and the test programs linked against the shared library.
4178 This still only happens when the keyword "shard" has been given to
4179 the configuration scripts.
4181 NOTE: shared library support is still an experimental thing, and
4182 backward binary compatibility is still not guaranteed.
4183 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
4185 *) Add support for Subject Information Access extension.
4186 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4188 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
4189 additional bytes when new memory had to be allocated, not just
4190 when reusing an existing buffer.
4193 *) New command line and configuration option 'utf8' for the req command.
4194 This allows field values to be specified as UTF8 strings.
4197 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
4198 runs for the former and machine-readable output for the latter.
4201 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
4202 of the e-mail address in the DN (i.e., it will go into a certificate
4203 extension only). The new configuration file option 'email_in_dn = no'
4204 has the same effect.
4205 [Massimiliano Pala madwolf@openca.org]
4207 *) Change all functions with names starting with des_ to be starting
4208 with DES_ instead. Add wrappers that are compatible with libdes,
4209 but are named _ossl_old_des_*. Finally, add macros that map the
4210 des_* symbols to the corresponding _ossl_old_des_* if libdes
4211 compatibility is desired. If OpenSSL 0.9.6c compatibility is
4212 desired, the des_* symbols will be mapped to DES_*, with one
4215 Since we provide two compatibility mappings, the user needs to
4216 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
4217 compatibility is desired. The default (i.e., when that macro
4218 isn't defined) is OpenSSL 0.9.6c compatibility.
4220 There are also macros that enable and disable the support of old
4221 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
4222 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
4223 are defined, the default will apply: to support the old des routines.
4225 In either case, one must include openssl/des.h to get the correct
4226 definitions. Do not try to just include openssl/des_old.h, that
4229 NOTE: This is a major break of an old API into a new one. Software
4230 authors are encouraged to switch to the DES_ style functions. Some
4231 time in the future, des_old.h and the libdes compatibility functions
4232 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
4233 default), and then completely removed.
4236 *) Test for certificates which contain unsupported critical extensions.
4237 If such a certificate is found during a verify operation it is
4238 rejected by default: this behaviour can be overridden by either
4239 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
4240 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
4241 X509_supported_extension() has also been added which returns 1 if a
4242 particular extension is supported.
4245 *) Modify the behaviour of EVP cipher functions in similar way to digests
4246 to retain compatibility with existing code.
4249 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
4250 compatibility with existing code. In particular the 'ctx' parameter does
4251 not have to be to be initialized before the call to EVP_DigestInit() and
4252 it is tidied up after a call to EVP_DigestFinal(). New function
4253 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
4254 EVP_MD_CTX_copy() changed to not require the destination to be
4255 initialized valid and new function EVP_MD_CTX_copy_ex() added which
4256 requires the destination to be valid.
4258 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
4259 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
4262 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
4263 so that complete 'Handshake' protocol structures are kept in memory
4264 instead of overwriting 'msg_type' and 'length' with 'body' data.
4267 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
4268 [Massimo Santin via Richard Levitte]
4270 *) Major restructuring to the underlying ENGINE code. This includes
4271 reduction of linker bloat, separation of pure "ENGINE" manipulation
4272 (initialisation, etc) from functionality dealing with implementations
4273 of specific crypto iterfaces. This change also introduces integrated
4274 support for symmetric ciphers and digest implementations - so ENGINEs
4275 can now accelerate these by providing EVP_CIPHER and EVP_MD
4276 implementations of their own. This is detailed in crypto/engine/README
4277 as it couldn't be adequately described here. However, there are a few
4278 API changes worth noting - some RSA, DSA, DH, and RAND functions that
4279 were changed in the original introduction of ENGINE code have now
4280 reverted back - the hooking from this code to ENGINE is now a good
4281 deal more passive and at run-time, operations deal directly with
4282 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
4283 dereferencing through an ENGINE pointer any more. Also, the ENGINE
4284 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
4285 they were not being used by the framework as there is no concept of a
4286 BIGNUM_METHOD and they could not be generalised to the new
4287 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
4288 ENGINE_cpy() has been removed as it cannot be consistently defined in
4292 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
4295 *) Change mkdef.pl to sort symbols that get the same entry number,
4296 and make sure the automatically generated functions ERR_load_*
4297 become part of libeay.num as well.
4300 *) New function SSL_renegotiate_pending(). This returns true once
4301 renegotiation has been requested (either SSL_renegotiate() call
4302 or HelloRequest/ClientHello receveived from the peer) and becomes
4303 false once a handshake has been completed.
4304 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
4305 sends a HelloRequest, but does not ensure that a handshake takes
4306 place. SSL_renegotiate_pending() is useful for checking if the
4307 client has followed the request.)
4310 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
4311 By default, clients may request session resumption even during
4312 renegotiation (if session ID contexts permit); with this option,
4313 session resumption is possible only in the first handshake.
4315 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
4316 more bits available for options that should not be part of
4317 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
4320 *) Add some demos for certificate and certificate request creation.
4323 *) Make maximum certificate chain size accepted from the peer application
4324 settable (SSL*_get/set_max_cert_list()), as proposed by
4325 "Douglas E. Engert" <deengert@anl.gov>.
4328 *) Add support for shared libraries for Unixware-7
4329 (Boyd Lynn Gerber <gerberb@zenez.com>).
4332 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
4333 be done prior to destruction. Use this to unload error strings from
4334 ENGINEs that load their own error strings. NB: This adds two new API
4335 functions to "get" and "set" this destroy handler in an ENGINE.
4338 *) Alter all existing ENGINE implementations (except "openssl" and
4339 "openbsd") to dynamically instantiate their own error strings. This
4340 makes them more flexible to be built both as statically-linked ENGINEs
4341 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
4342 Also, add stub code to each that makes building them as self-contained
4343 shared-libraries easier (see README.ENGINE).
4346 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
4347 implementations into applications that are completely implemented in
4348 self-contained shared-libraries. The "dynamic" ENGINE exposes control
4349 commands that can be used to configure what shared-library to load and
4350 to control aspects of the way it is handled. Also, made an update to
4351 the README.ENGINE file that brings its information up-to-date and
4352 provides some information and instructions on the "dynamic" ENGINE
4353 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
4356 *) Make it possible to unload ranges of ERR strings with a new
4357 "ERR_unload_strings" function.
4360 *) Add a copy() function to EVP_MD.
4363 *) Make EVP_MD routines take a context pointer instead of just the
4364 md_data void pointer.
4367 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
4368 that the digest can only process a single chunk of data
4369 (typically because it is provided by a piece of
4370 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
4371 is only going to provide a single chunk of data, and hence the
4372 framework needn't accumulate the data for oneshot drivers.
4375 *) As with "ERR", make it possible to replace the underlying "ex_data"
4376 functions. This change also alters the storage and management of global
4377 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
4378 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
4379 index counters. The API functions that use this state have been changed
4380 to take a "class_index" rather than pointers to the class's local STACK
4381 and counter, and there is now an API function to dynamically create new
4382 classes. This centralisation allows us to (a) plug a lot of the
4383 thread-safety problems that existed, and (b) makes it possible to clean
4384 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
4385 such data would previously have always leaked in application code and
4386 workarounds were in place to make the memory debugging turn a blind eye
4387 to it. Application code that doesn't use this new function will still
4388 leak as before, but their memory debugging output will announce it now
4389 rather than letting it slide.
4391 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
4392 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
4393 has a return value to indicate success or failure.
4396 *) Make it possible to replace the underlying "ERR" functions such that the
4397 global state (2 LHASH tables and 2 locks) is only used by the "default"
4398 implementation. This change also adds two functions to "get" and "set"
4399 the implementation prior to it being automatically set the first time
4400 any other ERR function takes place. Ie. an application can call "get",
4401 pass the return value to a module it has just loaded, and that module
4402 can call its own "set" function using that value. This means the
4403 module's "ERR" operations will use (and modify) the error state in the
4404 application and not in its own statically linked copy of OpenSSL code.
4407 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
4408 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
4409 the operation, and provides a more encapsulated way for external code
4410 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
4411 to use these functions rather than manually incrementing the counts.
4413 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
4416 *) Add EVP test program.
4419 *) Add symmetric cipher support to ENGINE. Expect the API to change!
4422 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
4423 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
4424 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
4425 These allow a CRL to be built without having to access X509_CRL fields
4426 directly. Modify 'ca' application to use new functions.
4429 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
4430 bug workarounds. Rollback attack detection is a security feature.
4431 The problem will only arise on OpenSSL servers when TLSv1 is not
4432 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
4433 Software authors not wanting to support TLSv1 will have special reasons
4434 for their choice and can explicitly enable this option.
4435 [Bodo Moeller, Lutz Jaenicke]
4437 *) Rationalise EVP so it can be extended: don't include a union of
4438 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
4439 (similar to those existing for EVP_CIPHER_CTX).
4444 EVP_MD_CTX_init(&md); /* new function call */
4445 EVP_DigestInit(&md, EVP_sha1());
4446 EVP_DigestUpdate(&md, in, len);
4447 EVP_DigestFinal(&md, out, NULL);
4448 EVP_MD_CTX_cleanup(&md); /* new function call */
4452 *) Make DES key schedule conform to the usual scheme, as well as
4453 correcting its structure. This means that calls to DES functions
4454 now have to pass a pointer to a des_key_schedule instead of a
4455 plain des_key_schedule (which was actually always a pointer
4458 des_key_schedule ks;
4460 des_set_key_checked(..., &ks);
4461 des_ncbc_encrypt(..., &ks, ...);
4463 (Note that a later change renames 'des_...' into 'DES_...'.)
4466 *) Initial reduction of linker bloat: the use of some functions, such as
4467 PEM causes large amounts of unused functions to be linked in due to
4468 poor organisation. For example pem_all.c contains every PEM function
4469 which has a knock on effect of linking in large amounts of (unused)
4470 ASN1 code. Grouping together similar functions and splitting unrelated
4471 functions prevents this.
4474 *) Cleanup of EVP macros.
4477 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
4478 correct _ecb suffix.
4481 *) Add initial OCSP responder support to ocsp application. The
4482 revocation information is handled using the text based index
4483 use by the ca application. The responder can either handle
4484 requests generated internally, supplied in files (for example
4485 via a CGI script) or using an internal minimal server.
4488 *) Add configuration choices to get zlib compression for TLS.
4491 *) Changes to Kerberos SSL for RFC 2712 compliance:
4492 1. Implemented real KerberosWrapper, instead of just using
4493 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
4494 2. Implemented optional authenticator field of KerberosWrapper.
4496 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
4497 and authenticator structs; see crypto/krb5/.
4499 Generalized Kerberos calls to support multiple Kerberos libraries.
4500 [Vern Staats <staatsvr@asc.hpc.mil>,
4501 Jeffrey Altman <jaltman@columbia.edu>
4502 via Richard Levitte]
4504 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
4505 already does with RSA. testdsa.h now has 'priv_key/pub_key'
4506 values for each of the key sizes rather than having just
4507 parameters (and 'speed' generating keys each time).
4510 *) Speed up EVP routines.
4513 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
4514 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
4515 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
4516 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
4518 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
4519 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
4520 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
4523 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
4525 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
4528 *) Added the OS2-EMX target.
4529 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
4531 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
4532 to support NCONF routines in extension code. New function CONF_set_nconf()
4533 to allow functions which take an NCONF to also handle the old LHASH
4534 structure: this means that the old CONF compatible routines can be
4535 retained (in particular wrt extensions) without having to duplicate the
4536 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
4539 *) Enhance the general user interface with mechanisms for inner control
4540 and with possibilities to have yes/no kind of prompts.
4543 *) Change all calls to low level digest routines in the library and
4544 applications to use EVP. Add missing calls to HMAC_cleanup() and
4545 don't assume HMAC_CTX can be copied using memcpy().
4546 [Verdon Walker <VWalker@novell.com>, Steve Henson]
4548 *) Add the possibility to control engines through control names but with
4549 arbitrary arguments instead of just a string.
4550 Change the key loaders to take a UI_METHOD instead of a callback
4551 function pointer. NOTE: this breaks binary compatibility with earlier
4552 versions of OpenSSL [engine].
4553 Adapt the nCipher code for these new conditions and add a card insertion
4557 *) Enhance the general user interface with mechanisms to better support
4558 dialog box interfaces, application-defined prompts, the possibility
4559 to use defaults (for example default passwords from somewhere else)
4560 and interrupts/cancellations.
4563 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
4564 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
4567 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
4568 tidy up some unnecessarily weird code in 'sk_new()').
4569 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
4571 *) Change the key loading routines for ENGINEs to use the same kind
4572 callback (pem_password_cb) as all other routines that need this
4576 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
4577 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
4578 than this minimum value is recommended.
4581 *) New random seeder for OpenVMS, using the system process statistics
4582 that are easily reachable.
4585 *) Windows apparently can't transparently handle global
4586 variables defined in DLLs. Initialisations such as:
4588 const ASN1_ITEM *it = &ASN1_INTEGER_it;
4590 wont compile. This is used by the any applications that need to
4591 declare their own ASN1 modules. This was fixed by adding the option
4592 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
4593 needed for static libraries under Win32.
4596 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
4597 setting of purpose and trust fields. New X509_STORE trust and
4598 purpose functions and tidy up setting in other SSL functions.
4601 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
4602 structure. These are inherited by X509_STORE_CTX when it is
4603 initialised. This allows various defaults to be set in the
4604 X509_STORE structure (such as flags for CRL checking and custom
4605 purpose or trust settings) for functions which only use X509_STORE_CTX
4606 internally such as S/MIME.
4608 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
4609 trust settings if they are not set in X509_STORE. This allows X509_STORE
4610 purposes and trust (in S/MIME for example) to override any set by default.
4612 Add command line options for CRL checking to smime, s_client and s_server
4616 *) Initial CRL based revocation checking. If the CRL checking flag(s)
4617 are set then the CRL is looked up in the X509_STORE structure and
4618 its validity and signature checked, then if the certificate is found
4619 in the CRL the verify fails with a revoked error.
4621 Various new CRL related callbacks added to X509_STORE_CTX structure.
4623 Command line options added to 'verify' application to support this.
4625 This needs some additional work, such as being able to handle multiple
4626 CRLs with different times, extension based lookup (rather than just
4627 by subject name) and ultimately more complete V2 CRL extension
4631 *) Add a general user interface API (crypto/ui/). This is designed
4632 to replace things like des_read_password and friends (backward
4633 compatibility functions using this new API are provided).
4634 The purpose is to remove prompting functions from the DES code
4635 section as well as provide for prompting through dialog boxes in
4636 a window system and the like.
4639 *) Add "ex_data" support to ENGINE so implementations can add state at a
4640 per-structure level rather than having to store it globally.
4643 *) Make it possible for ENGINE structures to be copied when retrieved by
4644 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
4645 This causes the "original" ENGINE structure to act like a template,
4646 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
4647 operational state can be localised to each ENGINE structure, despite the
4648 fact they all share the same "methods". New ENGINE structures returned in
4649 this case have no functional references and the return value is the single
4650 structural reference. This matches the single structural reference returned
4651 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4655 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4656 needs to match any other type at all we need to manually clear the
4660 *) Changes to the "openssl engine" utility to include;
4661 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4662 about an ENGINE's available control commands.
4663 - executing control commands from command line arguments using the
4664 '-pre' and '-post' switches. '-post' is only used if '-t' is
4665 specified and the ENGINE is successfully initialised. The syntax for
4666 the individual commands are colon-separated, for example;
4667 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4670 *) New dynamic control command support for ENGINEs. ENGINEs can now
4671 declare their own commands (numbers), names (strings), descriptions,
4672 and input types for run-time discovery by calling applications. A
4673 subset of these commands are implicitly classed as "executable"
4674 depending on their input type, and only these can be invoked through
4675 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
4676 can be based on user input, config files, etc). The distinction is
4677 that "executable" commands cannot return anything other than a boolean
4678 result and can only support numeric or string input, whereas some
4679 discoverable commands may only be for direct use through
4680 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
4681 pointers, or other custom uses. The "executable" commands are to
4682 support parameterisations of ENGINE behaviour that can be
4683 unambiguously defined by ENGINEs and used consistently across any
4684 OpenSSL-based application. Commands have been added to all the
4685 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
4686 control over shared-library paths without source code alterations.
4689 *) Changed all ENGINE implementations to dynamically allocate their
4690 ENGINEs rather than declaring them statically. Apart from this being
4691 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
4692 this also allows the implementations to compile without using the
4693 internal engine_int.h header.
4696 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
4697 'const' value. Any code that should be able to modify a RAND_METHOD
4698 should already have non-const pointers to it (ie. they should only
4699 modify their own ones).
4702 *) Made a variety of little tweaks to the ENGINE code.
4703 - "atalla" and "ubsec" string definitions were moved from header files
4704 to C code. "nuron" string definitions were placed in variables
4705 rather than hard-coded - allowing parameterisation of these values
4706 later on via ctrl() commands.
4707 - Removed unused "#if 0"'d code.
4708 - Fixed engine list iteration code so it uses ENGINE_free() to release
4709 structural references.
4710 - Constified the RAND_METHOD element of ENGINE structures.
4711 - Constified various get/set functions as appropriate and added
4712 missing functions (including a catch-all ENGINE_cpy that duplicates
4713 all ENGINE values onto a new ENGINE except reference counts/state).
4714 - Removed NULL parameter checks in get/set functions. Setting a method
4715 or function to NULL is a way of cancelling out a previously set
4716 value. Passing a NULL ENGINE parameter is just plain stupid anyway
4717 and doesn't justify the extra error symbols and code.
4718 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
4719 flags from engine_int.h to engine.h.
4720 - Changed prototypes for ENGINE handler functions (init(), finish(),
4721 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
4724 *) Implement binary inversion algorithm for BN_mod_inverse in addition
4725 to the algorithm using long division. The binary algorithm can be
4726 used only if the modulus is odd. On 32-bit systems, it is faster
4727 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
4728 roughly 5-15% for 256-bit moduli), so we use it only for moduli
4729 up to 450 bits. In 64-bit environments, the binary algorithm
4730 appears to be advantageous for much longer moduli; here we use it
4731 for moduli up to 2048 bits.
4734 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
4735 could not support the combine flag in choice fields.
4738 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
4739 extensions from a certificate request to the certificate.
4742 *) Allow multiple 'certopt' and 'nameopt' options to be separated
4743 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
4744 file: this allows the display of the certificate about to be
4745 signed to be customised, to allow certain fields to be included
4746 or excluded and extension details. The old system didn't display
4747 multicharacter strings properly, omitted fields not in the policy
4748 and couldn't display additional details such as extensions.
4751 *) Function EC_POINTs_mul for multiple scalar multiplication
4752 of an arbitrary number of elliptic curve points
4753 \sum scalars[i]*points[i],
4754 optionally including the generator defined for the EC_GROUP:
4755 scalar*generator + \sum scalars[i]*points[i].
4757 EC_POINT_mul is a simple wrapper function for the typical case
4758 that the point list has just one item (besides the optional
4762 *) First EC_METHODs for curves over GF(p):
4764 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
4765 operations and provides various method functions that can also
4766 operate with faster implementations of modular arithmetic.
4768 EC_GFp_mont_method() reuses most functions that are part of
4769 EC_GFp_simple_method, but uses Montgomery arithmetic.
4771 [Bodo Moeller; point addition and point doubling
4772 implementation directly derived from source code provided by
4773 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
4775 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
4776 crypto/ec/ec_lib.c):
4778 Curves are EC_GROUP objects (with an optional group generator)
4779 based on EC_METHODs that are built into the library.
4781 Points are EC_POINT objects based on EC_GROUP objects.
4783 Most of the framework would be able to handle curves over arbitrary
4784 finite fields, but as there are no obvious types for fields other
4785 than GF(p), some functions are limited to that for now.
4788 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
4789 that the file contains a complete HTTP response.
4792 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
4793 change the def and num file printf format specifier from "%-40sXXX"
4794 to "%-39s XXX". The latter will always guarantee a space after the
4795 field while the former will cause them to run together if the field
4796 is 40 of more characters long.
4799 *) Constify the cipher and digest 'method' functions and structures
4800 and modify related functions to take constant EVP_MD and EVP_CIPHER
4804 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
4805 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
4808 *) Modify EVP_Digest*() routines so they now return values. Although the
4809 internal software routines can never fail additional hardware versions
4813 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
4815 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
4816 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
4819 ERR_R_NESTED_ASN1_ERROR
4821 ERR_R_MISSING_ASN1_EOS
4822 were 4 .. 9, conflicting with
4823 ERR_LIB_RSA (= ERR_R_RSA_LIB)
4825 ERR_LIB_PEM (= ERR_R_PEM_LIB).
4826 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
4828 Add new error code 'ERR_R_INTERNAL_ERROR'.
4831 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
4835 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
4836 sets the subject name for a new request or supersedes the
4837 subject name in a given request. Formats that can be parsed are
4838 'CN=Some Name, OU=myOU, C=IT'
4840 'CN=Some Name/OU=myOU/C=IT'.
4842 Add options '-batch' and '-verbose' to 'openssl req'.
4843 [Massimiliano Pala <madwolf@hackmasters.net>]
4845 *) Introduce the possibility to access global variables through
4846 functions on platform were that's the best way to handle exporting
4847 global variables in shared libraries. To enable this functionality,
4848 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
4849 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
4850 is normally done by Configure or something similar).
4852 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
4853 in the source file (foo.c) like this:
4855 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
4856 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
4858 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
4859 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
4861 OPENSSL_DECLARE_GLOBAL(int,foo);
4862 #define foo OPENSSL_GLOBAL_REF(foo)
4863 OPENSSL_DECLARE_GLOBAL(double,bar);
4864 #define bar OPENSSL_GLOBAL_REF(bar)
4866 The #defines are very important, and therefore so is including the
4867 header file everywhere where the defined globals are used.
4869 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
4870 of ASN.1 items, but that structure is a bit different.
4872 The largest change is in util/mkdef.pl which has been enhanced with
4873 better and easier to understand logic to choose which symbols should
4874 go into the Windows .def files as well as a number of fixes and code
4875 cleanup (among others, algorithm keywords are now sorted
4876 lexicographically to avoid constant rewrites).
4879 *) In BN_div() keep a copy of the sign of 'num' before writing the
4880 result to 'rm' because if rm==num the value will be overwritten
4881 and produce the wrong result if 'num' is negative: this caused
4882 problems with BN_mod() and BN_nnmod().
4885 *) Function OCSP_request_verify(). This checks the signature on an
4886 OCSP request and verifies the signer certificate. The signer
4887 certificate is just checked for a generic purpose and OCSP request
4891 *) Add OCSP_check_validity() function to check the validity of OCSP
4892 responses. OCSP responses are prepared in real time and may only
4893 be a few seconds old. Simply checking that the current time lies
4894 between thisUpdate and nextUpdate max reject otherwise valid responses
4895 caused by either OCSP responder or client clock inaccuracy. Instead
4896 we allow thisUpdate and nextUpdate to fall within a certain period of
4897 the current time. The age of the response can also optionally be
4898 checked. Two new options -validity_period and -status_age added to
4902 *) If signature or public key algorithm is unrecognized print out its
4903 OID rather that just UNKNOWN.
4906 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
4907 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
4908 ID to be generated from the issuer certificate alone which can then be
4909 passed to OCSP_id_issuer_cmp().
4912 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
4913 ASN1 modules to export functions returning ASN1_ITEM pointers
4914 instead of the ASN1_ITEM structures themselves. This adds several
4915 new macros which allow the underlying ASN1 function/structure to
4916 be accessed transparently. As a result code should not use ASN1_ITEM
4917 references directly (such as &X509_it) but instead use the relevant
4918 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
4919 use of the new ASN1 code on platforms where exporting structures
4920 is problematical (for example in shared libraries) but exporting
4921 functions returning pointers to structures is not.
4924 *) Add support for overriding the generation of SSL/TLS session IDs.
4925 These callbacks can be registered either in an SSL_CTX or per SSL.
4926 The purpose of this is to allow applications to control, if they wish,
4927 the arbitrary values chosen for use as session IDs, particularly as it
4928 can be useful for session caching in multiple-server environments. A
4929 command-line switch for testing this (and any client code that wishes
4930 to use such a feature) has been added to "s_server".
4931 [Geoff Thorpe, Lutz Jaenicke]
4933 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
4934 of the form '#if defined(...) || defined(...) || ...' and
4935 '#if !defined(...) && !defined(...) && ...'. This also avoids
4936 the growing number of special cases it was previously handling.
4939 *) Make all configuration macros available for application by making
4940 sure they are available in opensslconf.h, by giving them names starting
4941 with "OPENSSL_" to avoid conflicts with other packages and by making
4942 sure e_os2.h will cover all platform-specific cases together with
4944 Additionally, it is now possible to define configuration/platform-
4945 specific names (called "system identities"). In the C code, these
4946 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
4947 macro with the name beginning with "OPENSSL_SYS_", which is determined
4948 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
4952 *) New option -set_serial to 'req' and 'x509' this allows the serial
4953 number to use to be specified on the command line. Previously self
4954 signed certificates were hard coded with serial number 0 and the
4955 CA options of 'x509' had to use a serial number in a file which was
4959 *) New options to 'ca' utility to support V2 CRL entry extensions.
4960 Currently CRL reason, invalidity date and hold instruction are
4961 supported. Add new CRL extensions to V3 code and some new objects.
4964 *) New function EVP_CIPHER_CTX_set_padding() this is used to
4965 disable standard block padding (aka PKCS#5 padding) in the EVP
4966 API, which was previously mandatory. This means that the data is
4967 not padded in any way and so the total length much be a multiple
4968 of the block size, otherwise an error occurs.
4971 *) Initial (incomplete) OCSP SSL support.
4974 *) New function OCSP_parse_url(). This splits up a URL into its host,
4975 port and path components: primarily to parse OCSP URLs. New -url
4976 option to ocsp utility.
4979 *) New nonce behavior. The return value of OCSP_check_nonce() now
4980 reflects the various checks performed. Applications can decide
4981 whether to tolerate certain situations such as an absent nonce
4982 in a response when one was present in a request: the ocsp application
4983 just prints out a warning. New function OCSP_add1_basic_nonce()
4984 this is to allow responders to include a nonce in a response even if
4985 the request is nonce-less.
4988 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
4989 skipped when using openssl x509 multiple times on a single input file,
4990 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
4993 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
4994 set string type: to handle setting ASN1_TIME structures. Fix ca
4995 utility to correctly initialize revocation date of CRLs.
4998 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
4999 the clients preferred ciphersuites and rather use its own preferences.
5000 Should help to work around M$ SGC (Server Gated Cryptography) bug in
5001 Internet Explorer by ensuring unchanged hash method during stepup.
5002 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
5005 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
5006 to aes and add a new 'exist' option to print out symbols that don't
5010 *) Additional options to ocsp utility to allow flags to be set and
5011 additional certificates supplied.
5014 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
5015 OCSP client a number of certificate to only verify the response
5019 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
5020 handle the new API. Currently only ECB, CBC modes supported. Add new
5023 Add TLS AES ciphersuites as described in RFC3268, "Advanced
5024 Encryption Standard (AES) Ciphersuites for Transport Layer
5025 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
5026 not enabled by default and were not part of the "ALL" ciphersuite
5027 alias because they were not yet official; they could be
5028 explicitly requested by specifying the "AESdraft" ciphersuite
5029 group alias. In the final release of OpenSSL 0.9.7, the group
5030 alias is called "AES" and is part of "ALL".)
5031 [Ben Laurie, Steve Henson, Bodo Moeller]
5033 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
5034 request to response.
5037 *) Functions for OCSP responders. OCSP_request_onereq_count(),
5038 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
5039 extract information from a certificate request. OCSP_response_create()
5040 creates a response and optionally adds a basic response structure.
5041 OCSP_basic_add1_status() adds a complete single response to a basic
5042 response and returns the OCSP_SINGLERESP structure just added (to allow
5043 extensions to be included for example). OCSP_basic_add1_cert() adds a
5044 certificate to a basic response and OCSP_basic_sign() signs a basic
5045 response with various flags. New helper functions ASN1_TIME_check()
5046 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
5047 (converts ASN1_TIME to GeneralizedTime).
5050 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
5051 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
5052 structure from a certificate. X509_pubkey_digest() digests the public_key
5053 contents: this is used in various key identifiers.
5056 *) Make sk_sort() tolerate a NULL argument.
5057 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
5059 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
5060 passed by the function are trusted implicitly. If any of them signed the
5061 response then it is assumed to be valid and is not verified.
5064 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
5065 to data. This was previously part of the PKCS7 ASN1 code. This
5066 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
5067 [Steve Henson, reported by Kenneth R. Robinette
5068 <support@securenetterm.com>]
5070 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
5071 routines: without these tracing memory leaks is very painful.
5072 Fix leaks in PKCS12 and PKCS7 routines.
5075 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
5076 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
5077 effectively meant GeneralizedTime would never be used. Now it
5078 is initialised to -1 but X509_time_adj() now has to check the value
5079 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
5080 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
5081 [Steve Henson, reported by Kenneth R. Robinette
5082 <support@securenetterm.com>]
5084 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
5085 result in a zero length in the ASN1_INTEGER structure which was
5086 not consistent with the structure when d2i_ASN1_INTEGER() was used
5087 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
5088 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
5089 where it did not print out a minus for negative ASN1_INTEGER.
5092 *) Add summary printout to ocsp utility. The various functions which
5093 convert status values to strings have been renamed to:
5094 OCSP_response_status_str(), OCSP_cert_status_str() and
5095 OCSP_crl_reason_str() and are no longer static. New options
5096 to verify nonce values and to disable verification. OCSP response
5097 printout format cleaned up.
5100 *) Add additional OCSP certificate checks. These are those specified
5101 in RFC2560. This consists of two separate checks: the CA of the
5102 certificate being checked must either be the OCSP signer certificate
5103 or the issuer of the OCSP signer certificate. In the latter case the
5104 OCSP signer certificate must contain the OCSP signing extended key
5105 usage. This check is performed by attempting to match the OCSP
5106 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
5107 in the OCSP_CERTID structures of the response.
5110 *) Initial OCSP certificate verification added to OCSP_basic_verify()
5111 and related routines. This uses the standard OpenSSL certificate
5112 verify routines to perform initial checks (just CA validity) and
5113 to obtain the certificate chain. Then additional checks will be
5114 performed on the chain. Currently the root CA is checked to see
5115 if it is explicitly trusted for OCSP signing. This is used to set
5116 a root CA as a global signing root: that is any certificate that
5117 chains to that CA is an acceptable OCSP signing certificate.
5120 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
5121 extensions from a separate configuration file.
5122 As when reading extensions from the main configuration file,
5123 the '-extensions ...' option may be used for specifying the
5125 [Massimiliano Pala <madwolf@comune.modena.it>]
5127 *) New OCSP utility. Allows OCSP requests to be generated or
5128 read. The request can be sent to a responder and the output
5129 parsed, outputed or printed in text form. Not complete yet:
5130 still needs to check the OCSP response validity.
5133 *) New subcommands for 'openssl ca':
5134 'openssl ca -status <serial>' prints the status of the cert with
5135 the given serial number (according to the index file).
5136 'openssl ca -updatedb' updates the expiry status of certificates
5138 [Massimiliano Pala <madwolf@comune.modena.it>]
5140 *) New '-newreq-nodes' command option to CA.pl. This is like
5141 '-newreq', but calls 'openssl req' with the '-nodes' option
5142 so that the resulting key is not encrypted.
5143 [Damien Miller <djm@mindrot.org>]
5145 *) New configuration for the GNU Hurd.
5146 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
5148 *) Initial code to implement OCSP basic response verify. This
5149 is currently incomplete. Currently just finds the signer's
5150 certificate and verifies the signature on the response.
5153 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
5154 value of OPENSSLDIR. This is available via the new '-d' option
5155 to 'openssl version', and is also included in 'openssl version -a'.
5158 *) Allowing defining memory allocation callbacks that will be given
5159 file name and line number information in additional arguments
5160 (a const char* and an int). The basic functionality remains, as
5161 well as the original possibility to just replace malloc(),
5162 realloc() and free() by functions that do not know about these
5163 additional arguments. To register and find out the current
5164 settings for extended allocation functions, the following
5165 functions are provided:
5167 CRYPTO_set_mem_ex_functions
5168 CRYPTO_set_locked_mem_ex_functions
5169 CRYPTO_get_mem_ex_functions
5170 CRYPTO_get_locked_mem_ex_functions
5172 These work the same way as CRYPTO_set_mem_functions and friends.
5173 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
5174 extended allocation function is enabled.
5175 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
5176 a conventional allocation function is enabled.
5177 [Richard Levitte, Bodo Moeller]
5179 *) Finish off removing the remaining LHASH function pointer casts.
5180 There should no longer be any prototype-casting required when using
5181 the LHASH abstraction, and any casts that remain are "bugs". See
5182 the callback types and macros at the head of lhash.h for details
5183 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
5186 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
5187 If /dev/[u]random devices are not available or do not return enough
5188 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
5190 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
5191 /etc/entropy will be queried once each in this sequence, quering stops
5192 when enough entropy was collected without querying more sockets.
5195 *) Change the Unix RAND_poll() variant to be able to poll several
5196 random devices, as specified by DEVRANDOM, until a sufficient amount
5197 of data has been collected. We spend at most 10 ms on each file
5198 (select timeout) and read in non-blocking mode. DEVRANDOM now
5199 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
5200 (previously it was just the string "/dev/urandom"), so on typical
5201 platforms the 10 ms delay will never occur.
5202 Also separate out the Unix variant to its own file, rand_unix.c.
5203 For VMS, there's a currently-empty rand_vms.c.
5206 *) Move OCSP client related routines to ocsp_cl.c. These
5207 provide utility functions which an application needing
5208 to issue a request to an OCSP responder and analyse the
5209 response will typically need: as opposed to those which an
5210 OCSP responder itself would need which will be added later.
5212 OCSP_request_sign() signs an OCSP request with an API similar
5213 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
5214 response. OCSP_response_get1_basic() extracts basic response
5215 from response. OCSP_resp_find_status(): finds and extracts status
5216 information from an OCSP_CERTID structure (which will be created
5217 when the request structure is built). These are built from lower
5218 level functions which work on OCSP_SINGLERESP structures but
5219 wont normally be used unless the application wishes to examine
5220 extensions in the OCSP response for example.
5222 Replace nonce routines with a pair of functions.
5223 OCSP_request_add1_nonce() adds a nonce value and optionally
5224 generates a random value. OCSP_check_nonce() checks the
5225 validity of the nonce in an OCSP response.
5228 *) Change function OCSP_request_add() to OCSP_request_add0_id().
5229 This doesn't copy the supplied OCSP_CERTID and avoids the
5230 need to free up the newly created id. Change return type
5231 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
5232 This can then be used to add extensions to the request.
5233 Deleted OCSP_request_new(), since most of its functionality
5234 is now in OCSP_REQUEST_new() (and the case insensitive name
5235 clash) apart from the ability to set the request name which
5236 will be added elsewhere.
5239 *) Update OCSP API. Remove obsolete extensions argument from
5240 various functions. Extensions are now handled using the new
5241 OCSP extension code. New simple OCSP HTTP function which
5242 can be used to send requests and parse the response.
5245 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
5246 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
5247 uses the special reorder version of SET OF to sort the attributes
5248 and reorder them to match the encoded order. This resolves a long
5249 standing problem: a verify on a PKCS7 structure just after signing
5250 it used to fail because the attribute order did not match the
5251 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
5252 it uses the received order. This is necessary to tolerate some broken
5253 software that does not order SET OF. This is handled by encoding
5254 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
5255 to produce the required SET OF.
5258 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
5259 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
5260 files to get correct declarations of the ASN.1 item variables.
5263 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
5264 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
5265 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
5266 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
5267 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
5268 ASN1_ITEM and no wrapper functions.
5271 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
5272 replace the old function pointer based I/O routines. Change most of
5273 the *_d2i_bio() and *_d2i_fp() functions to use these.
5276 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
5277 lines, recognice more "algorithms" that can be deselected, and make
5278 it complain about algorithm deselection that isn't recognised.
5281 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
5282 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
5283 to use new functions. Add NO_ASN1_OLD which can be set to remove
5284 some old style ASN1 functions: this can be used to determine if old
5285 code will still work when these eventually go away.
5288 *) New extension functions for OCSP structures, these follow the
5289 same conventions as certificates and CRLs.
5292 *) New function X509V3_add1_i2d(). This automatically encodes and
5293 adds an extension. Its behaviour can be customised with various
5294 flags to append, replace or delete. Various wrappers added for
5295 certifcates and CRLs.
5298 *) Fix to avoid calling the underlying ASN1 print routine when
5299 an extension cannot be parsed. Correct a typo in the
5300 OCSP_SERVICELOC extension. Tidy up print OCSP format.
5303 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
5304 entries for variables.
5307 *) Add functionality to apps/openssl.c for detecting locking
5308 problems: As the program is single-threaded, all we have
5309 to do is register a locking callback using an array for
5310 storing which locks are currently held by the program.
5313 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
5314 SSL_get_ex_data_X509_STORE_idx(), which is used in
5315 ssl_verify_cert_chain() and thus can be called at any time
5316 during TLS/SSL handshakes so that thread-safety is essential.
5317 Unfortunately, the ex_data design is not at all suited
5318 for multi-threaded use, so it probably should be abolished.
5321 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
5322 [Broadcom, tweaked and integrated by Geoff Thorpe]
5324 *) Move common extension printing code to new function
5325 X509V3_print_extensions(). Reorganise OCSP print routines and
5326 implement some needed OCSP ASN1 functions. Add OCSP extensions.
5329 *) New function X509_signature_print() to remove duplication in some
5333 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
5334 set (this was treated exactly the same as SET OF previously). This
5335 is used to reorder the STACK representing the structure to match the
5336 encoding. This will be used to get round a problem where a PKCS7
5337 structure which was signed could not be verified because the STACK
5338 order did not reflect the encoded order.
5341 *) Reimplement the OCSP ASN1 module using the new code.
5344 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
5345 for its ASN1 operations. The old style function pointers still exist
5346 for now but they will eventually go away.
5349 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
5350 completely replaces the old ASN1 functionality with a table driven
5351 encoder and decoder which interprets an ASN1_ITEM structure describing
5352 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
5353 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
5354 has also been converted to the new form.
5357 *) Change BN_mod_exp_recp so that negative moduli are tolerated
5358 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
5359 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
5360 for negative moduli.
5363 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
5364 of not touching the result's sign bit.
5367 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
5371 *) Changed the LHASH code to use prototypes for callbacks, and created
5372 macros to declare and implement thin (optionally static) functions
5373 that provide type-safety and avoid function pointer casting for the
5374 type-specific callbacks.
5377 *) Added Kerberos Cipher Suites to be used with TLS, as written in
5379 [Veers Staats <staatsvr@asc.hpc.mil>,
5380 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
5382 *) Reformat the FAQ so the different questions and answers can be divided
5383 in sections depending on the subject.
5386 *) Have the zlib compression code load ZLIB.DLL dynamically under
5390 *) New function BN_mod_sqrt for computing square roots modulo a prime
5391 (using the probabilistic Tonelli-Shanks algorithm unless
5392 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
5393 be handled deterministically).
5394 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
5396 *) Make BN_mod_inverse faster by explicitly handling small quotients
5397 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
5398 512 bits], about 30% for larger ones [1024 or 2048 bits].)
5401 *) New function BN_kronecker.
5404 *) Fix BN_gcd so that it works on negative inputs; the result is
5405 positive unless both parameters are zero.
5406 Previously something reasonably close to an infinite loop was
5407 possible because numbers could be growing instead of shrinking
5408 in the implementation of Euclid's algorithm.
5411 *) Fix BN_is_word() and BN_is_one() macros to take into account the
5412 sign of the number in question.
5414 Fix BN_is_word(a,w) to work correctly for w == 0.
5416 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
5417 because its test if the absolute value of 'a' equals 'w'.
5418 Note that BN_abs_is_word does *not* handle w == 0 reliably;
5419 it exists mostly for use in the implementations of BN_is_zero(),
5420 BN_is_one(), and BN_is_word().
5423 *) New function BN_swap.
5426 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
5427 the exponentiation functions are more likely to produce reasonable
5428 results on negative inputs.
5431 *) Change BN_mod_mul so that the result is always non-negative.
5432 Previously, it could be negative if one of the factors was negative;
5433 I don't think anyone really wanted that behaviour.
5436 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
5437 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
5438 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
5439 and add new functions:
5448 BN_mod_lshift1_quick
5452 These functions always generate non-negative results.
5454 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
5455 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
5457 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
5458 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
5459 be reduced modulo m.
5460 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
5463 The following entry accidentily appeared in the CHANGES file
5464 distributed with OpenSSL 0.9.7. The modifications described in
5465 it do *not* apply to OpenSSL 0.9.7.
5467 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
5468 was actually never needed) and in BN_mul(). The removal in BN_mul()
5469 required a small change in bn_mul_part_recursive() and the addition
5470 of the functions bn_cmp_part_words(), bn_sub_part_words() and
5471 bn_add_part_words(), which do the same thing as bn_cmp_words(),
5472 bn_sub_words() and bn_add_words() except they take arrays with
5477 *) In 'openssl passwd', verify passwords read from the terminal
5478 unless the '-salt' option is used (which usually means that
5479 verification would just waste user's time since the resulting
5480 hash is going to be compared with some given password hash)
5481 or the new '-noverify' option is used.
5483 This is an incompatible change, but it does not affect
5484 non-interactive use of 'openssl passwd' (passwords on the command
5485 line, '-stdin' option, '-in ...' option) and thus should not
5489 *) Remove all references to RSAref, since there's no more need for it.
5492 *) Make DSO load along a path given through an environment variable
5493 (SHLIB_PATH) with shl_load().
5496 *) Constify the ENGINE code as a result of BIGNUM constification.
5497 Also constify the RSA code and most things related to it. In a
5498 few places, most notable in the depth of the ASN.1 code, ugly
5499 casts back to non-const were required (to be solved at a later
5503 *) Make it so the openssl application has all engines loaded by default.
5506 *) Constify the BIGNUM routines a little more.
5509 *) Add the following functions:
5511 ENGINE_load_cswift()
5513 ENGINE_load_atalla()
5515 ENGINE_load_builtin_engines()
5517 That way, an application can itself choose if external engines that
5518 are built-in in OpenSSL shall ever be used or not. The benefit is
5519 that applications won't have to be linked with libdl or other dso
5520 libraries unless it's really needed.
5522 Changed 'openssl engine' to load all engines on demand.
5523 Changed the engine header files to avoid the duplication of some
5524 declarations (they differed!).
5527 *) 'openssl engine' can now list capabilities.
5530 *) Better error reporting in 'openssl engine'.
5533 *) Never call load_dh_param(NULL) in s_server.
5536 *) Add engine application. It can currently list engines by name and
5537 identity, and test if they are actually available.
5540 *) Improve RPM specification file by forcing symbolic linking and making
5541 sure the installed documentation is also owned by root.root.
5542 [Damien Miller <djm@mindrot.org>]
5544 *) Give the OpenSSL applications more possibilities to make use of
5545 keys (public as well as private) handled by engines.
5548 *) Add OCSP code that comes from CertCo.
5551 *) Add VMS support for the Rijndael code.
5554 *) Added untested support for Nuron crypto accelerator.
5557 *) Add support for external cryptographic devices. This code was
5558 previously distributed separately as the "engine" branch.
5559 [Geoff Thorpe, Richard Levitte]
5561 *) Rework the filename-translation in the DSO code. It is now possible to
5562 have far greater control over how a "name" is turned into a filename
5563 depending on the operating environment and any oddities about the
5564 different shared library filenames on each system.
5567 *) Support threads on FreeBSD-elf in Configure.
5570 *) Fix for SHA1 assembly problem with MASM: it produces
5571 warnings about corrupt line number information when assembling
5572 with debugging information. This is caused by the overlapping
5574 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
5577 NCONF_get_number() has no error checking at all. As a replacement,
5578 NCONF_get_number_e() is defined (_e for "error checking") and is
5579 promoted strongly. The old NCONF_get_number is kept around for
5580 binary backward compatibility.
5581 Make it possible for methods to load from something other than a BIO,
5582 by providing a function pointer that is given a name instead of a BIO.
5583 For example, this could be used to load configuration data from an
5587 *) Fix for non blocking accept BIOs. Added new I/O special reason
5588 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
5589 with non blocking I/O was not possible because no retry code was
5590 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
5594 *) Added the beginnings of Rijndael support.
5597 *) Fix for bug in DirectoryString mask setting. Add support for
5598 X509_NAME_print_ex() in 'req' and X509_print_ex() function
5599 to allow certificate printing to more controllable, additional
5600 'certopt' option to 'x509' to allow new printing options to be
5604 *) Clean old EAY MD5 hack from e_os.h.
5607 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
5609 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
5610 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
5611 [Joe Orton, Steve Henson]
5613 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
5615 *) Fix additional bug revealed by the NISCC test suite:
5617 Stop bug triggering large recursion when presented with
5618 certain ASN.1 tags (CVE-2003-0851)
5621 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
5623 *) Fix various bugs revealed by running the NISCC test suite:
5625 Stop out of bounds reads in the ASN1 code when presented with
5626 invalid tags (CVE-2003-0543 and CVE-2003-0544).
5628 If verify callback ignores invalid public key errors don't try to check
5629 certificate signature with the NULL public key.
5633 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
5634 if the server requested one: as stated in TLS 1.0 and SSL 3.0
5638 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
5639 extra data after the compression methods not only for TLS 1.0
5640 but also for SSL 3.0 (as required by the specification).
5641 [Bodo Moeller; problem pointed out by Matthias Loepfe]
5643 *) Change X509_certificate_type() to mark the key as exported/exportable
5644 when it's 512 *bits* long, not 512 bytes.
5647 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
5649 *) Countermeasure against the Klima-Pokorny-Rosa extension of
5650 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
5651 a protocol version number mismatch like a decryption error
5652 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
5655 *) Turn on RSA blinding by default in the default implementation
5656 to avoid a timing attack. Applications that don't want it can call
5657 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
5658 They would be ill-advised to do so in most cases.
5659 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
5661 *) Change RSA blinding code so that it works when the PRNG is not
5662 seeded (in this case, the secret RSA exponent is abused as
5663 an unpredictable seed -- if it is not unpredictable, there
5664 is no point in blinding anyway). Make RSA blinding thread-safe
5665 by remembering the creator's thread ID in rsa->blinding and
5666 having all other threads use local one-time blinding factors
5667 (this requires more computation than sharing rsa->blinding, but
5668 avoids excessive locking; and if an RSA object is not shared
5669 between threads, blinding will still be very fast).
5672 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
5674 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
5675 via timing by performing a MAC computation even if incorrrect
5676 block cipher padding has been found. This is a countermeasure
5677 against active attacks where the attacker has to distinguish
5678 between bad padding and a MAC verification error. (CVE-2003-0078)
5680 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
5681 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
5682 Martin Vuagnoux (EPFL, Ilion)]
5684 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
5686 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
5687 memory from it's contents. This is done with a counter that will
5688 place alternating values in each byte. This can be used to solve
5689 two issues: 1) the removal of calls to memset() by highly optimizing
5690 compilers, and 2) cleansing with other values than 0, since those can
5691 be read through on certain media, for example a swap space on disk.
5694 *) Bugfix: client side session caching did not work with external caching,
5695 because the session->cipher setting was not restored when reloading
5696 from the external cache. This problem was masked, when
5697 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
5698 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
5701 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
5702 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
5703 [Zeev Lieber <zeev-l@yahoo.com>]
5705 *) Undo an undocumented change introduced in 0.9.6e which caused
5706 repeated calls to OpenSSL_add_all_ciphers() and
5707 OpenSSL_add_all_digests() to be ignored, even after calling
5711 *) Change the default configuration reader to deal with last line not
5712 being properly terminated.
5715 *) Change X509_NAME_cmp() so it applies the special rules on handling
5716 DN values that are of type PrintableString, as well as RDNs of type
5717 emailAddress where the value has the type ia5String.
5718 [stefank@valicert.com via Richard Levitte]
5720 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
5721 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
5722 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
5723 the bitwise-OR of the two for use by the majority of applications
5724 wanting this behaviour, and update the docs. The documented
5725 behaviour and actual behaviour were inconsistent and had been
5726 changing anyway, so this is more a bug-fix than a behavioural
5728 [Geoff Thorpe, diagnosed by Nadav Har'El]
5730 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
5731 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
5734 *) Fix initialization code race conditions in
5735 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
5736 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
5737 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
5738 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
5739 ssl2_get_cipher_by_char(),
5740 ssl3_get_cipher_by_char().
5741 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
5743 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
5744 the cached sessions are flushed, as the remove_cb() might use ex_data
5745 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
5746 (see [openssl.org #212]).
5747 [Geoff Thorpe, Lutz Jaenicke]
5749 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
5750 length, instead of the encoding length to d2i_ASN1_OBJECT.
5753 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
5755 *) [In 0.9.6g-engine release:]
5756 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
5757 [Lynn Gazis <lgazis@rainbow.com>]
5759 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
5761 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
5762 and get fix the header length calculation.
5763 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
5764 Alon Kantor <alonk@checkpoint.com> (and others),
5767 *) Use proper error handling instead of 'assertions' in buffer
5768 overflow checks added in 0.9.6e. This prevents DoS (the
5769 assertions could call abort()).
5770 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
5772 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
5774 *) Add various sanity checks to asn1_get_length() to reject
5775 the ASN1 length bytes if they exceed sizeof(long), will appear
5776 negative or the content length exceeds the length of the
5778 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
5780 *) Fix cipher selection routines: ciphers without encryption had no flags
5781 for the cipher strength set and where therefore not handled correctly
5782 by the selection routines (PR #130).
5785 *) Fix EVP_dsa_sha macro.
5789 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
5790 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
5791 that was added in OpenSSL 0.9.6d.
5793 As the countermeasure turned out to be incompatible with some
5794 broken SSL implementations, the new option is part of SSL_OP_ALL.
5795 SSL_OP_ALL is usually employed when compatibility with weird SSL
5796 implementations is desired (e.g. '-bugs' option to 's_client' and
5797 's_server'), so the new option is automatically set in many
5801 *) Changes in security patch:
5803 Changes marked "(CHATS)" were sponsored by the Defense Advanced
5804 Research Projects Agency (DARPA) and Air Force Research Laboratory,
5805 Air Force Materiel Command, USAF, under agreement number
5808 *) Add various sanity checks to asn1_get_length() to reject
5809 the ASN1 length bytes if they exceed sizeof(long), will appear
5810 negative or the content length exceeds the length of the
5811 supplied buffer. (CVE-2002-0659)
5812 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
5814 *) Assertions for various potential buffer overflows, not known to
5816 [Ben Laurie (CHATS)]
5818 *) Various temporary buffers to hold ASCII versions of integers were
5819 too small for 64 bit platforms. (CVE-2002-0655)
5820 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
5822 *) Remote buffer overflow in SSL3 protocol - an attacker could
5823 supply an oversized session ID to a client. (CVE-2002-0656)
5824 [Ben Laurie (CHATS)]
5826 *) Remote buffer overflow in SSL2 protocol - an attacker could
5827 supply an oversized client master key. (CVE-2002-0656)
5828 [Ben Laurie (CHATS)]
5830 Changes between 0.9.6c and 0.9.6d [9 May 2002]
5832 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
5833 encoded as NULL) with id-dsa-with-sha1.
5834 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
5836 *) Check various X509_...() return values in apps/req.c.
5837 [Nils Larsch <nla@trustcenter.de>]
5839 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
5840 an end-of-file condition would erronously be flagged, when the CRLF
5841 was just at the end of a processed block. The bug was discovered when
5842 processing data through a buffering memory BIO handing the data to a
5843 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
5844 <ptsekov@syntrex.com> and Nedelcho Stanev.
5847 *) Implement a countermeasure against a vulnerability recently found
5848 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
5849 before application data chunks to avoid the use of known IVs
5850 with data potentially chosen by the attacker.
5853 *) Fix length checks in ssl3_get_client_hello().
5856 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
5857 to prevent ssl3_read_internal() from incorrectly assuming that
5858 ssl3_read_bytes() found application data while handshake
5859 processing was enabled when in fact s->s3->in_read_app_data was
5860 merely automatically cleared during the initial handshake.
5861 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
5863 *) Fix object definitions for Private and Enterprise: they were not
5864 recognized in their shortname (=lowercase) representation. Extend
5865 obj_dat.pl to issue an error when using undefined keywords instead
5866 of silently ignoring the problem (Svenning Sorensen
5867 <sss@sss.dnsalias.net>).
5870 *) Fix DH_generate_parameters() so that it works for 'non-standard'
5871 generators, i.e. generators other than 2 and 5. (Previously, the
5872 code did not properly initialise the 'add' and 'rem' values to
5873 BN_generate_prime().)
5875 In the new general case, we do not insist that 'generator' is
5876 actually a primitive root: This requirement is rather pointless;
5877 a generator of the order-q subgroup is just as good, if not
5881 *) Map new X509 verification errors to alerts. Discovered and submitted by
5882 Tom Wu <tom@arcot.com>.
5885 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
5886 returning non-zero before the data has been completely received
5887 when using non-blocking I/O.
5888 [Bodo Moeller; problem pointed out by John Hughes]
5890 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
5891 [Ben Laurie, Lutz Jaenicke]
5893 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
5894 Yoram Zahavi <YoramZ@gilian.com>).
5897 *) Add information about CygWin 1.3 and on, and preserve proper
5898 configuration for the versions before that.
5899 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
5901 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
5902 check whether we deal with a copy of a session and do not delete from
5903 the cache in this case. Problem reported by "Izhar Shoshani Levi"
5904 <izhar@checkpoint.com>.
5907 *) Do not store session data into the internal session cache, if it
5908 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
5909 flag is set). Proposed by Aslam <aslam@funk.com>.
5912 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
5916 *) [In 0.9.6d-engine release:]
5917 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
5918 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5920 *) Add the configuration target linux-s390x.
5921 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
5923 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
5924 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
5925 variable as an indication that a ClientHello message has been
5926 received. As the flag value will be lost between multiple
5927 invocations of ssl3_accept when using non-blocking I/O, the
5928 function may not be aware that a handshake has actually taken
5929 place, thus preventing a new session from being added to the
5932 To avoid this problem, we now set s->new_session to 2 instead of
5933 using a local variable.
5934 [Lutz Jaenicke, Bodo Moeller]
5936 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
5937 if the SSL_R_LENGTH_MISMATCH error is detected.
5938 [Geoff Thorpe, Bodo Moeller]
5940 *) New 'shared_ldflag' column in Configure platform table.
5943 *) Fix EVP_CIPHER_mode macro.
5944 ["Dan S. Camper" <dan@bti.net>]
5946 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
5947 type, we must throw them away by setting rr->length to 0.
5948 [D P Chang <dpc@qualys.com>]
5950 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
5952 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
5953 <Dominikus.Scherkl@biodata.com>. (The previous implementation
5954 worked incorrectly for those cases where range = 10..._2 and
5955 3*range is two bits longer than range.)
5958 *) Only add signing time to PKCS7 structures if it is not already
5962 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
5963 OBJ_ld_ce should be OBJ_id_ce.
5964 Also some ip-pda OIDs in crypto/objects/objects.txt were
5965 incorrect (cf. RFC 3039).
5966 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
5968 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
5969 returns early because it has nothing to do.
5970 [Andy Schneider <andy.schneider@bjss.co.uk>]
5972 *) [In 0.9.6c-engine release:]
5973 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
5974 [Andy Schneider <andy.schneider@bjss.co.uk>]
5976 *) [In 0.9.6c-engine release:]
5977 Add support for Cryptographic Appliance's keyserver technology.
5978 (Use engine 'keyclient')
5979 [Cryptographic Appliances and Geoff Thorpe]
5981 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
5982 is called via tools/c89.sh because arguments have to be
5983 rearranged (all '-L' options must appear before the first object
5985 [Richard Shapiro <rshapiro@abinitio.com>]
5987 *) [In 0.9.6c-engine release:]
5988 Add support for Broadcom crypto accelerator cards, backported
5990 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
5992 *) [In 0.9.6c-engine release:]
5993 Add support for SureWare crypto accelerator cards from
5994 Baltimore Technologies. (Use engine 'sureware')
5995 [Baltimore Technologies and Mark Cox]
5997 *) [In 0.9.6c-engine release:]
5998 Add support for crypto accelerator cards from Accelerated
5999 Encryption Processing, www.aep.ie. (Use engine 'aep')
6000 [AEP Inc. and Mark Cox]
6002 *) Add a configuration entry for gcc on UnixWare.
6003 [Gary Benson <gbenson@redhat.com>]
6005 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
6006 messages are stored in a single piece (fixed-length part and
6007 variable-length part combined) and fix various bugs found on the way.
6010 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
6011 instead. BIO_gethostbyname() does not know what timeouts are
6012 appropriate, so entries would stay in cache even when they have
6014 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
6016 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
6017 faced with a pathologically small ClientHello fragment that does
6018 not contain client_version: Instead of aborting with an error,
6019 simply choose the highest available protocol version (i.e.,
6020 TLS 1.0 unless it is disabled). In practice, ClientHello
6021 messages are never sent like this, but this change gives us
6022 strictly correct behaviour at least for TLS.
6025 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
6026 never resets s->method to s->ctx->method when called from within
6027 one of the SSL handshake functions.
6028 [Bodo Moeller; problem pointed out by Niko Baric]
6030 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
6031 (sent using the client's version number) if client_version is
6032 smaller than the protocol version in use. Also change
6033 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
6034 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
6035 the client will at least see that alert.
6038 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
6042 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
6043 client receives HelloRequest while in a handshake.
6044 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
6046 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
6047 should end in 'break', not 'goto end' which circuments various
6048 cleanups done in state SSL_ST_OK. But session related stuff
6049 must be disabled for SSL_ST_OK in the case that we just sent a
6052 Also avoid some overhead by not calling ssl_init_wbio_buffer()
6053 before just sending a HelloRequest.
6054 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
6056 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
6057 reveal whether illegal block cipher padding was found or a MAC
6058 verification error occured. (Neither SSLerr() codes nor alerts
6059 are directly visible to potential attackers, but the information
6060 may leak via logfiles.)
6062 Similar changes are not required for the SSL 2.0 implementation
6063 because the number of padding bytes is sent in clear for SSL 2.0,
6064 and the extra bytes are just ignored. However ssl/s2_pkt.c
6065 failed to verify that the purported number of padding bytes is in
6069 *) Add OpenUNIX-8 support including shared libraries
6070 (Boyd Lynn Gerber <gerberb@zenez.com>).
6073 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
6074 'wristwatch attack' using huge encoding parameters (cf.
6075 James H. Manger's CRYPTO 2001 paper). Note that the
6076 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
6077 encoding parameters and hence was not vulnerable.
6080 *) BN_sqr() bug fix.
6081 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
6083 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
6084 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
6085 followed by modular reduction.
6086 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
6088 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
6089 equivalent based on BN_pseudo_rand() instead of BN_rand().
6092 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
6093 This function was broken, as the check for a new client hello message
6094 to handle SGC did not allow these large messages.
6095 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
6098 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
6101 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
6102 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
6105 *) Rework the configuration and shared library support for Tru64 Unix.
6106 The configuration part makes use of modern compiler features and
6107 still retains old compiler behavior for those that run older versions
6108 of the OS. The shared library support part includes a variant that
6109 uses the RPATH feature, and is available through the special
6110 configuration target "alpha-cc-rpath", which will never be selected
6112 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
6114 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
6115 with the same message size as in ssl3_get_certificate_request().
6116 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
6117 messages might inadvertently be reject as too long.
6118 [Petr Lampa <lampa@fee.vutbr.cz>]
6120 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
6123 *) Modified SSL library such that the verify_callback that has been set
6124 specificly for an SSL object with SSL_set_verify() is actually being
6125 used. Before the change, a verify_callback set with this function was
6126 ignored and the verify_callback() set in the SSL_CTX at the time of
6127 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
6128 to allow the necessary settings.
6131 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
6132 explicitly to NULL, as at least on Solaris 8 this seems not always to be
6133 done automatically (in contradiction to the requirements of the C
6134 standard). This made problems when used from OpenSSH.
6137 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
6138 dh->length and always used
6140 BN_rand_range(priv_key, dh->p).
6142 BN_rand_range() is not necessary for Diffie-Hellman, and this
6143 specific range makes Diffie-Hellman unnecessarily inefficient if
6144 dh->length (recommended exponent length) is much smaller than the
6145 length of dh->p. We could use BN_rand_range() if the order of
6146 the subgroup was stored in the DH structure, but we only have
6151 BN_rand(priv_key, l, ...)
6153 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
6159 RSA_eay_public_encrypt
6160 RSA_eay_private_decrypt
6161 RSA_eay_private_encrypt (signing)
6162 RSA_eay_public_decrypt (signature verification)
6164 (default implementations for RSA_public_encrypt,
6165 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
6166 always reject numbers >= n.
6169 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
6170 to synchronize access to 'locking_thread'. This is necessary on
6171 systems where access to 'locking_thread' (an 'unsigned long'
6172 variable) is not atomic.
6175 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
6176 *before* setting the 'crypto_lock_rand' flag. The previous code had
6177 a race condition if 0 is a valid thread ID.
6178 [Travis Vitek <vitek@roguewave.com>]
6180 *) Add support for shared libraries under Irix.
6181 [Albert Chin-A-Young <china@thewrittenword.com>]
6183 *) Add configuration option to build on Linux on both big-endian and
6185 [Ralf Baechle <ralf@uni-koblenz.de>]
6187 *) Add the possibility to create shared libraries on HP-UX.
6190 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
6192 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
6193 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
6194 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
6195 PRNG state recovery was possible based on the output of
6196 one PRNG request appropriately sized to gain knowledge on
6197 'md' followed by enough consecutive 1-byte PRNG requests
6198 to traverse all of 'state'.
6200 1. When updating 'md_local' (the current thread's copy of 'md')
6201 during PRNG output generation, hash all of the previous
6202 'md_local' value, not just the half used for PRNG output.
6204 2. Make the number of bytes from 'state' included into the hash
6205 independent from the number of PRNG bytes requested.
6207 The first measure alone would be sufficient to avoid
6208 Markku-Juhani's attack. (Actually it had never occurred
6209 to me that the half of 'md_local' used for chaining was the
6210 half from which PRNG output bytes were taken -- I had always
6211 assumed that the secret half would be used.) The second
6212 measure makes sure that additional data from 'state' is never
6213 mixed into 'md_local' in small portions; this heuristically
6214 further strengthens the PRNG.
6217 *) Fix crypto/bn/asm/mips3.s.
6220 *) When only the key is given to "enc", the IV is undefined. Print out
6221 an error message in this case.
6224 *) Handle special case when X509_NAME is empty in X509 printing routines.
6227 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
6228 positive and less than q.
6231 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
6232 used: it isn't thread safe and the add_lock_callback should handle
6234 [Paul Rose <Paul.Rose@bridge.com>]
6236 *) Verify that incoming data obeys the block size in
6237 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
6241 [Ulf Möller, Bodo Möller]
6243 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
6244 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
6245 when fixing the server behaviour for backwards-compatible 'client
6246 hello' messages. (Note that the attack is impractical against
6247 SSL 3.0 and TLS 1.0 anyway because length and version checking
6248 means that the probability of guessing a valid ciphertext is
6249 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
6252 Before 0.9.5, the countermeasure (hide the error by generating a
6253 random 'decryption result') did not work properly because
6254 ERR_clear_error() was missing, meaning that SSL_get_error() would
6255 detect the supposedly ignored error.
6257 Both problems are now fixed.
6260 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
6261 (previously it was 1024).
6264 *) Fix for compatibility mode trust settings: ignore trust settings
6265 unless some valid trust or reject settings are present.
6268 *) Fix for blowfish EVP: its a variable length cipher.
6271 *) Fix various bugs related to DSA S/MIME verification. Handle missing
6272 parameters in DSA public key structures and return an error in the
6273 DSA routines if parameters are absent.
6276 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
6277 in the current directory if neither $RANDFILE nor $HOME was set.
6278 RAND_file_name() in 0.9.6a returned NULL in this case. This has
6279 caused some confusion to Windows users who haven't defined $HOME.
6280 Thus RAND_file_name() is changed again: e_os.h can define a
6281 DEFAULT_HOME, which will be used if $HOME is not set.
6282 For Windows, we use "C:"; on other platforms, we still require
6283 environment variables.
6285 *) Move 'if (!initialized) RAND_poll()' into regions protected by
6286 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
6287 having multiple threads call RAND_poll() concurrently.
6290 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
6291 combination of a flag and a thread ID variable.
6292 Otherwise while one thread is in ssleay_rand_bytes (which sets the
6293 flag), *other* threads can enter ssleay_add_bytes without obeying
6294 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
6295 that they do not hold after the first thread unsets add_do_not_lock).
6298 *) Change bctest again: '-x' expressions are not available in all
6302 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
6304 *) Fix a couple of memory leaks in PKCS7_dataDecode()
6305 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
6307 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
6308 the default extension for executables, if any. Also, make the perl
6309 scripts that use symlink() to test if it really exists and use "cp"
6310 if it doesn't. All this made OpenSSL compilable and installable in
6314 *) Fix for asn1_GetSequence() for indefinite length constructed data.
6315 If SEQUENCE is length is indefinite just set c->slen to the total
6316 amount of data available.
6317 [Steve Henson, reported by shige@FreeBSD.org]
6318 [This change does not apply to 0.9.7.]
6320 *) Change bctest to avoid here-documents inside command substitution
6321 (workaround for FreeBSD /bin/sh bug).
6322 For compatibility with Ultrix, avoid shell functions (introduced
6323 in the bctest version that searches along $PATH).
6326 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
6327 with des_encrypt() defined on some operating systems, like Solaris
6331 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
6332 On the Importance of Eliminating Errors in Cryptographic
6333 Computations, J. Cryptology 14 (2001) 2, 101-119,
6334 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
6337 *) MIPS assembler BIGNUM division bug fix.
6340 *) Disabled incorrect Alpha assembler code.
6343 *) Fix PKCS#7 decode routines so they correctly update the length
6344 after reading an EOC for the EXPLICIT tag.
6346 [This change does not apply to 0.9.7.]
6348 *) Fix bug in PKCS#12 key generation routines. This was triggered
6349 if a 3DES key was generated with a 0 initial byte. Include
6350 PKCS12_BROKEN_KEYGEN compilation option to retain the old
6351 (but broken) behaviour.
6354 *) Enhance bctest to search for a working bc along $PATH and print
6356 [Tim Rice <tim@multitalents.net> via Richard Levitte]
6358 *) Fix memory leaks in err.c: free err_data string if necessary;
6359 don't write to the wrong index in ERR_set_error_data.
6362 *) Implement ssl23_peek (analogous to ssl23_read), which previously
6366 *) Replace rdtsc with _emit statements for VC++ version 5.
6367 [Jeremy Cooper <jeremy@baymoo.org>]
6369 *) Make it possible to reuse SSLv2 sessions.
6372 *) In copy_email() check for >= 0 as a return value for
6373 X509_NAME_get_index_by_NID() since 0 is a valid index.
6374 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
6376 *) Avoid coredump with unsupported or invalid public keys by checking if
6377 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
6378 PKCS7_verify() fails with non detached data.
6381 *) Don't use getenv in library functions when run as setuid/setgid.
6382 New function OPENSSL_issetugid().
6385 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
6386 due to incorrect handling of multi-threading:
6388 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
6390 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
6392 3. Count how many times MemCheck_off() has been called so that
6393 nested use can be treated correctly. This also avoids
6394 inband-signalling in the previous code (which relied on the
6395 assumption that thread ID 0 is impossible).
6398 *) Add "-rand" option also to s_client and s_server.
6401 *) Fix CPU detection on Irix 6.x.
6402 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
6403 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
6405 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
6408 [This change does not apply to 0.9.7.]
6410 *) Use the cached encoding of an X509_NAME structure rather than
6411 copying it. This is apparently the reason for the libsafe "errors"
6412 but the code is actually correct.
6415 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
6416 Bleichenbacher's DSA attack.
6417 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
6418 to be set and top=0 forces the highest bit to be set; top=-1 is new
6419 and leaves the highest bit random.
6420 [Ulf Moeller, Bodo Moeller]
6422 *) In the NCONF_...-based implementations for CONF_... queries
6423 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
6424 a temporary CONF structure with the data component set to NULL
6425 (which gives segmentation faults in lh_retrieve).
6426 Instead, use NULL for the CONF pointer in CONF_get_string and
6427 CONF_get_number (which may use environment variables) and directly
6428 return NULL from CONF_get_section.
6431 *) Fix potential buffer overrun for EBCDIC.
6434 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
6435 keyUsage if basicConstraints absent for a CA.
6438 *) Make SMIME_write_PKCS7() write mail header values with a format that
6439 is more generally accepted (no spaces before the semicolon), since
6440 some programs can't parse those values properly otherwise. Also make
6441 sure BIO's that break lines after each write do not create invalid
6445 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
6446 macros previously used would not encode an empty SEQUENCE OF
6447 and break the signature.
6449 [This change does not apply to 0.9.7.]
6451 *) Zero the premaster secret after deriving the master secret in
6455 *) Add some EVP_add_digest_alias registrations (as found in
6456 OpenSSL_add_all_digests()) to SSL_library_init()
6457 aka OpenSSL_add_ssl_algorithms(). This provides improved
6458 compatibility with peers using X.509 certificates
6459 with unconventional AlgorithmIdentifier OIDs.
6462 *) Fix for Irix with NO_ASM.
6463 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
6465 *) ./config script fixes.
6466 [Ulf Moeller, Richard Levitte]
6468 *) Fix 'openssl passwd -1'.
6471 *) Change PKCS12_key_gen_asc() so it can cope with non null
6472 terminated strings whose length is passed in the passlen
6473 parameter, for example from PEM callbacks. This was done
6474 by adding an extra length parameter to asc2uni().
6475 [Steve Henson, reported by <oddissey@samsung.co.kr>]
6477 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
6478 call failed, free the DSA structure.
6481 *) Fix to uni2asc() to cope with zero length Unicode strings.
6482 These are present in some PKCS#12 files.
6485 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
6486 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
6487 when writing a 32767 byte record.
6488 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
6490 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
6491 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
6493 (RSA objects have a reference count access to which is protected
6494 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
6495 so they are meant to be shared between threads.)
6496 [Bodo Moeller, Geoff Thorpe; original patch submitted by
6497 "Reddie, Steven" <Steven.Reddie@ca.com>]
6499 *) Fix a deadlock in CRYPTO_mem_leaks().
6502 *) Use better test patterns in bntest.
6505 *) rand_win.c fix for Borland C.
6508 *) BN_rshift bugfix for n == 0.
6511 *) Add a 'bctest' script that checks for some known 'bc' bugs
6512 so that 'make test' does not abort just because 'bc' is broken.
6515 *) Store verify_result within SSL_SESSION also for client side to
6516 avoid potential security hole. (Re-used sessions on the client side
6517 always resulted in verify_result==X509_V_OK, not using the original
6518 result of the server certificate verification.)
6521 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
6522 SSL3_RT_APPLICATION_DATA, return 0.
6523 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
6527 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
6528 releases, have been re-implemented by renaming the previous
6529 implementations of ssl2_read and ssl3_read to ssl2_read_internal
6530 and ssl3_read_internal, respectively, and adding 'peek' parameters
6531 to them. The new ssl[23]_{read,peek} functions are calls to
6532 ssl[23]_read_internal with the 'peek' flag set appropriately.
6533 A 'peek' parameter has also been added to ssl3_read_bytes, which
6534 does the actual work for ssl3_read_internal.
6537 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
6538 the method-specific "init()" handler. Also clean up ex_data after
6539 calling the method-specific "finish()" handler. Previously, this was
6540 happening the other way round.
6543 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
6544 The previous value, 12, was not always sufficient for BN_mod_exp().
6547 *) Make sure that shared libraries get the internal name engine with
6548 the full version number and not just 0. This should mark the
6549 shared libraries as not backward compatible. Of course, this should
6550 be changed again when we can guarantee backward binary compatibility.
6553 *) Fix typo in get_cert_by_subject() in by_dir.c
6554 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
6556 *) Rework the system to generate shared libraries:
6558 - Make note of the expected extension for the shared libraries and
6559 if there is a need for symbolic links from for example libcrypto.so.0
6560 to libcrypto.so.0.9.7. There is extended info in Configure for
6563 - Make as few rebuilds of the shared libraries as possible.
6565 - Still avoid linking the OpenSSL programs with the shared libraries.
6567 - When installing, install the shared libraries separately from the
6571 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
6573 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
6574 and not in SSL_clear because the latter is also used by the
6575 accept/connect functions; previously, the settings made by
6576 SSL_set_read_ahead would be lost during the handshake.
6577 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
6579 *) Correct util/mkdef.pl to be selective about disabled algorithms.
6580 Previously, it would create entries for disableed algorithms no
6584 *) Added several new manual pages for SSL_* function.
6587 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
6589 *) In ssl23_get_client_hello, generate an error message when faced
6590 with an initial SSL 3.0/TLS record that is too small to contain the
6591 first two bytes of the ClientHello message, i.e. client_version.
6592 (Note that this is a pathologic case that probably has never happened
6593 in real life.) The previous approach was to use the version number
6594 from the record header as a substitute; but our protocol choice
6595 should not depend on that one because it is not authenticated
6596 by the Finished messages.
6599 *) More robust randomness gathering functions for Windows.
6600 [Jeffrey Altman <jaltman@columbia.edu>]
6602 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
6603 not set then we don't setup the error code for issuer check errors
6604 to avoid possibly overwriting other errors which the callback does
6605 handle. If an application does set the flag then we assume it knows
6606 what it is doing and can handle the new informational codes
6610 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
6611 a general "ANY" type, as such it should be able to decode anything
6612 including tagged types. However it didn't check the class so it would
6613 wrongly interpret tagged types in the same way as their universal
6614 counterpart and unknown types were just rejected. Changed so that the
6615 tagged and unknown types are handled in the same way as a SEQUENCE:
6616 that is the encoding is stored intact. There is also a new type
6617 "V_ASN1_OTHER" which is used when the class is not universal, in this
6618 case we have no idea what the actual type is so we just lump them all
6622 *) On VMS, stdout may very well lead to a file that is written to
6623 in a record-oriented fashion. That means that every write() will
6624 write a separate record, which will be read separately by the
6625 programs trying to read from it. This can be very confusing.
6627 The solution is to put a BIO filter in the way that will buffer
6628 text until a linefeed is reached, and then write everything a
6629 line at a time, so every record written will be an actual line,
6630 not chunks of lines and not (usually doesn't happen, but I've
6631 seen it once) several lines in one record. BIO_f_linebuffer() is
6634 Currently, it's a VMS-only method, because that's where it has
6635 been tested well enough.
6638 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
6639 it can return incorrect results.
6640 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
6641 but it was in 0.9.6-beta[12].)
6644 *) Disable the check for content being present when verifying detached
6645 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
6646 include zero length content when signing messages.
6649 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
6650 BIO_ctrl (for BIO pairs).
6653 *) Add DSO method for VMS.
6656 *) Bug fix: Montgomery multiplication could produce results with the
6660 *) Add RPM specification openssl.spec and modify it to build three
6661 packages. The default package contains applications, application
6662 documentation and run-time libraries. The devel package contains
6663 include files, static libraries and function documentation. The
6664 doc package contains the contents of the doc directory. The original
6665 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
6668 *) Add a large number of documentation files for many SSL routines.
6669 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
6671 *) Add a configuration entry for Sony News 4.
6672 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
6674 *) Don't set the two most significant bits to one when generating a
6675 random number < q in the DSA library.
6678 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
6679 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
6680 the underlying transport is blocking) if a handshake took place.
6681 (The default behaviour is needed by applications such as s_client
6682 and s_server that use select() to determine when to use SSL_read;
6683 but for applications that know in advance when to expect data, it
6684 just makes things more complicated.)
6687 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
6691 *) Add a few more EBCDIC conditionals that make `req' and `x509'
6692 work better on such systems.
6693 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
6695 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
6696 Update PKCS12_parse() so it copies the friendlyName and the
6697 keyid to the certificates aux info.
6700 *) Fix bug in PKCS7_verify() which caused an infinite loop
6701 if there was more than one signature.
6702 [Sven Uszpelkat <su@celocom.de>]
6704 *) Major change in util/mkdef.pl to include extra information
6705 about each symbol, as well as presentig variables as well
6706 as functions. This change means that there's n more need
6707 to rebuild the .num files when some algorithms are excluded.
6710 *) Allow the verify time to be set by an application,
6711 rather than always using the current time.
6714 *) Phase 2 verify code reorganisation. The certificate
6715 verify code now looks up an issuer certificate by a
6716 number of criteria: subject name, authority key id
6717 and key usage. It also verifies self signed certificates
6718 by the same criteria. The main comparison function is
6719 X509_check_issued() which performs these checks.
6721 Lot of changes were necessary in order to support this
6722 without completely rewriting the lookup code.
6724 Authority and subject key identifier are now cached.
6726 The LHASH 'certs' is X509_STORE has now been replaced
6727 by a STACK_OF(X509_OBJECT). This is mainly because an
6728 LHASH can't store or retrieve multiple objects with
6729 the same hash value.
6731 As a result various functions (which were all internal
6732 use only) have changed to handle the new X509_STORE
6733 structure. This will break anything that messed round
6734 with X509_STORE internally.
6736 The functions X509_STORE_add_cert() now checks for an
6737 exact match, rather than just subject name.
6739 The X509_STORE API doesn't directly support the retrieval
6740 of multiple certificates matching a given criteria, however
6741 this can be worked round by performing a lookup first
6742 (which will fill the cache with candidate certificates)
6743 and then examining the cache for matches. This is probably
6744 the best we can do without throwing out X509_LOOKUP
6745 entirely (maybe later...).
6747 The X509_VERIFY_CTX structure has been enhanced considerably.
6749 All certificate lookup operations now go via a get_issuer()
6750 callback. Although this currently uses an X509_STORE it
6751 can be replaced by custom lookups. This is a simple way
6752 to bypass the X509_STORE hackery necessary to make this
6753 work and makes it possible to use more efficient techniques
6754 in future. A very simple version which uses a simple
6755 STACK for its trusted certificate store is also provided
6756 using X509_STORE_CTX_trusted_stack().
6758 The verify_cb() and verify() callbacks now have equivalents
6759 in the X509_STORE_CTX structure.
6761 X509_STORE_CTX also has a 'flags' field which can be used
6762 to customise the verify behaviour.
6765 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
6766 excludes S/MIME capabilities.
6769 *) When a certificate request is read in keep a copy of the
6770 original encoding of the signed data and use it when outputing
6771 again. Signatures then use the original encoding rather than
6772 a decoded, encoded version which may cause problems if the
6773 request is improperly encoded.
6776 *) For consistency with other BIO_puts implementations, call
6777 buffer_write(b, ...) directly in buffer_puts instead of calling
6780 In BIO_puts, increment b->num_write as in BIO_write.
6781 [Peter.Sylvester@EdelWeb.fr]
6783 *) Fix BN_mul_word for the case where the word is 0. (We have to use
6784 BN_zero, we may not return a BIGNUM with an array consisting of
6788 *) Avoid calling abort() from within the library when problems are
6789 detected, except if preprocessor symbols have been defined
6790 (such as REF_CHECK, BN_DEBUG etc.).
6793 *) New openssl application 'rsautl'. This utility can be
6794 used for low level RSA operations. DER public key
6795 BIO/fp routines also added.
6798 *) New Configure entry and patches for compiling on QNX 4.
6799 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
6801 *) A demo state-machine implementation was sponsored by
6802 Nuron (http://www.nuron.com/) and is now available in
6803 demos/state_machine.
6806 *) New options added to the 'dgst' utility for signature
6807 generation and verification.
6810 *) Unrecognized PKCS#7 content types are now handled via a
6811 catch all ASN1_TYPE structure. This allows unsupported
6812 types to be stored as a "blob" and an application can
6813 encode and decode it manually.
6816 *) Fix various signed/unsigned issues to make a_strex.c
6818 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
6820 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
6821 length if passed a buffer. ASN1_INTEGER_to_BN failed
6822 if passed a NULL BN and its argument was negative.
6823 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
6825 *) Modification to PKCS#7 encoding routines to output definite
6826 length encoding. Since currently the whole structures are in
6827 memory there's not real point in using indefinite length
6828 constructed encoding. However if OpenSSL is compiled with
6829 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
6832 *) Added BIO_vprintf() and BIO_vsnprintf().
6835 *) Added more prefixes to parse for in the the strings written
6836 through a logging bio, to cover all the levels that are available
6837 through syslog. The prefixes are now:
6839 PANIC, EMERG, EMR => LOG_EMERG
6840 ALERT, ALR => LOG_ALERT
6841 CRIT, CRI => LOG_CRIT
6842 ERROR, ERR => LOG_ERR
6843 WARNING, WARN, WAR => LOG_WARNING
6844 NOTICE, NOTE, NOT => LOG_NOTICE
6845 INFO, INF => LOG_INFO
6846 DEBUG, DBG => LOG_DEBUG
6848 and as before, if none of those prefixes are present at the
6849 beginning of the string, LOG_ERR is chosen.
6851 On Win32, the LOG_* levels are mapped according to this:
6853 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
6854 LOG_WARNING => EVENTLOG_WARNING_TYPE
6855 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
6859 *) Made it possible to reconfigure with just the configuration
6860 argument "reconf" or "reconfigure". The command line arguments
6861 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
6862 and are retrieved from there when reconfiguring.
6866 [Assar Westerlund <assar@sics.se>, Richard Levitte]
6868 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
6871 *) The obj_dat.pl script was messing up the sorting of object
6872 names. The reason was that it compared the quoted version
6873 of strings as a result "OCSP" > "OCSP Signing" because
6874 " > SPACE. Changed script to store unquoted versions of
6875 names and add quotes on output. It was also omitting some
6876 names from the lookup table if they were given a default
6877 value (that is if SN is missing it is given the same
6878 value as LN and vice versa), these are now added on the
6879 grounds that if an object has a name we should be able to
6880 look it up. Finally added warning output when duplicate
6881 short or long names are found.
6884 *) Changes needed for Tandem NSK.
6885 [Scott Uroff <scott@xypro.com>]
6887 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
6888 RSA_padding_check_SSLv23(), special padding was never detected
6889 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
6890 version rollback attacks was not effective.
6892 In s23_clnt.c, don't use special rollback-attack detection padding
6893 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
6894 client; similarly, in s23_srvr.c, don't do the rollback check if
6895 SSL 2.0 is the only protocol enabled in the server.
6898 *) Make it possible to get hexdumps of unprintable data with 'openssl
6899 asn1parse'. By implication, the functions ASN1_parse_dump() and
6900 BIO_dump_indent() are added.
6903 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
6904 these print out strings and name structures based on various
6905 flags including RFC2253 support and proper handling of
6906 multibyte characters. Added options to the 'x509' utility
6907 to allow the various flags to be set.
6910 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
6911 Also change the functions X509_cmp_current_time() and
6912 X509_gmtime_adj() work with an ASN1_TIME structure,
6913 this will enable certificates using GeneralizedTime in validity
6914 dates to be checked.
6917 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
6918 negative public key encodings) on by default,
6919 NO_NEG_PUBKEY_BUG can be set to disable it.
6922 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
6923 content octets. An i2c_ASN1_OBJECT is unnecessary because
6924 the encoding can be trivially obtained from the structure.
6927 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
6928 not read locks (CRYPTO_r_[un]lock).
6931 *) A first attempt at creating official support for shared
6932 libraries through configuration. I've kept it so the
6933 default is static libraries only, and the OpenSSL programs
6934 are always statically linked for now, but there are
6935 preparations for dynamic linking in place.
6936 This has been tested on Linux and Tru64.
6939 *) Randomness polling function for Win9x, as described in:
6940 Peter Gutmann, Software Generation of Practically Strong
6944 *) Fix so PRNG is seeded in req if using an already existing
6948 *) New options to smime application. -inform and -outform
6949 allow alternative formats for the S/MIME message including
6950 PEM and DER. The -content option allows the content to be
6951 specified separately. This should allow things like Netscape
6952 form signing output easier to verify.
6955 *) Fix the ASN1 encoding of tags using the 'long form'.
6958 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
6959 STRING types. These convert content octets to and from the
6960 underlying type. The actual tag and length octets are
6961 already assumed to have been read in and checked. These
6962 are needed because all other string types have virtually
6963 identical handling apart from the tag. By having versions
6964 of the ASN1 functions that just operate on content octets
6965 IMPLICIT tagging can be handled properly. It also allows
6966 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
6967 and ASN1_INTEGER are identical apart from the tag.
6970 *) Change the handling of OID objects as follows:
6972 - New object identifiers are inserted in objects.txt, following
6973 the syntax given in objects.README.
6974 - objects.pl is used to process obj_mac.num and create a new
6976 - obj_dat.pl is used to create a new obj_dat.h, using the data in
6979 This is currently kind of a hack, and the perl code in objects.pl
6980 isn't very elegant, but it works as I intended. The simplest way
6981 to check that it worked correctly is to look in obj_dat.h and
6982 check the array nid_objs and make sure the objects haven't moved
6983 around (this is important!). Additions are OK, as well as
6984 consistent name changes.
6987 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
6990 *) Addition of the command line parameter '-rand file' to 'openssl req'.
6991 The given file adds to whatever has already been seeded into the
6992 random pool through the RANDFILE configuration file option or
6993 environment variable, or the default random state file.
6996 *) mkstack.pl now sorts each macro group into lexical order.
6997 Previously the output order depended on the order the files
6998 appeared in the directory, resulting in needless rewriting
7002 *) Patches to make OpenSSL compile under Win32 again. Mostly
7003 work arounds for the VC++ problem that it treats func() as
7004 func(void). Also stripped out the parts of mkdef.pl that
7005 added extra typesafe functions: these no longer exist.
7008 *) Reorganisation of the stack code. The macros are now all
7009 collected in safestack.h . Each macro is defined in terms of
7010 a "stack macro" of the form SKM_<name>(type, a, b). The
7011 DEBUG_SAFESTACK is now handled in terms of function casts,
7012 this has the advantage of retaining type safety without the
7013 use of additional functions. If DEBUG_SAFESTACK is not defined
7014 then the non typesafe macros are used instead. Also modified the
7015 mkstack.pl script to handle the new form. Needs testing to see
7016 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
7017 the default if no major problems. Similar behaviour for ASN1_SET_OF
7018 and PKCS12_STACK_OF.
7021 *) When some versions of IIS use the 'NET' form of private key the
7022 key derivation algorithm is different. Normally MD5(password) is
7023 used as a 128 bit RC4 key. In the modified case
7024 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
7025 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
7026 as the old Netscape_RSA functions except they have an additional
7027 'sgckey' parameter which uses the modified algorithm. Also added
7028 an -sgckey command line option to the rsa utility. Thanks to
7029 Adrian Peck <bertie@ncipher.com> for posting details of the modified
7030 algorithm to openssl-dev.
7033 *) The evp_local.h macros were using 'c.##kname' which resulted in
7034 invalid expansion on some systems (SCO 5.0.5 for example).
7035 Corrected to 'c.kname'.
7036 [Phillip Porch <root@theporch.com>]
7038 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
7039 a STACK of email addresses from a certificate or request, these look
7040 in the subject name and the subject alternative name extensions and
7041 omit any duplicate addresses.
7044 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
7045 This makes DSA verification about 2 % faster.
7048 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
7049 (meaning that now 2^5 values will be precomputed, which is only 4 KB
7050 plus overhead for 1024 bit moduli).
7051 This makes exponentiations about 0.5 % faster for 1024 bit
7052 exponents (as measured by "openssl speed rsa2048").
7055 *) Rename memory handling macros to avoid conflicts with other
7057 Malloc => OPENSSL_malloc
7058 Malloc_locked => OPENSSL_malloc_locked
7059 Realloc => OPENSSL_realloc
7060 Free => OPENSSL_free
7063 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
7064 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
7067 *) CygWin32 support.
7068 [John Jarvie <jjarvie@newsguy.com>]
7070 *) The type-safe stack code has been rejigged. It is now only compiled
7071 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
7072 by default all type-specific stack functions are "#define"d back to
7073 standard stack functions. This results in more streamlined output
7074 but retains the type-safety checking possibilities of the original
7078 *) The STACK code has been cleaned up, and certain type declarations
7079 that didn't make a lot of sense have been brought in line. This has
7080 also involved a cleanup of sorts in safestack.h to more correctly
7081 map type-safe stack functions onto their plain stack counterparts.
7082 This work has also resulted in a variety of "const"ifications of
7083 lots of the code, especially "_cmp" operations which should normally
7084 be prototyped with "const" parameters anyway.
7087 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
7088 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
7089 (The PRNG state consists of two parts, the large pool 'state' and 'md',
7090 where all of 'md' is used each time the PRNG is used, but 'state'
7091 is used only indexed by a cyclic counter. As entropy may not be
7092 well distributed from the beginning, 'md' is important as a
7093 chaining variable. However, the output function chains only half
7094 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
7095 all of 'md', and seeding with STATE_SIZE dummy bytes will result
7096 in all of 'state' being rewritten, with the new values depending
7097 on virtually all of 'md'. This overcomes the 80 bit limitation.)
7100 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
7101 the handshake is continued after ssl_verify_cert_chain();
7102 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
7103 can lead to 'unexplainable' connection aborts later.
7104 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
7106 *) Major EVP API cipher revision.
7107 Add hooks for extra EVP features. This allows various cipher
7108 parameters to be set in the EVP interface. Support added for variable
7109 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
7110 setting of RC2 and RC5 parameters.
7112 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
7115 Remove lots of duplicated code from the EVP library. For example *every*
7116 cipher init() function handles the 'iv' in the same way according to the
7117 cipher mode. They also all do nothing if the 'key' parameter is NULL and
7118 for CFB and OFB modes they zero ctx->num.
7120 New functionality allows removal of S/MIME code RC2 hack.
7122 Most of the routines have the same form and so can be declared in terms
7125 By shifting this to the top level EVP_CipherInit() it can be removed from
7126 all individual ciphers. If the cipher wants to handle IVs or keys
7127 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
7130 Change lots of functions like EVP_EncryptUpdate() to now return a
7131 value: although software versions of the algorithms cannot fail
7132 any installed hardware versions can.
7135 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
7136 this option is set, tolerate broken clients that send the negotiated
7137 protocol version number instead of the requested protocol version
7141 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
7142 i.e. non-zero for export ciphersuites, zero otherwise.
7143 Previous versions had this flag inverted, inconsistent with
7144 rsa_tmp_cb (..._TMP_RSA_CB).
7145 [Bodo Moeller; problem reported by Amit Chopra]
7147 *) Add missing DSA library text string. Work around for some IIS
7148 key files with invalid SEQUENCE encoding.
7151 *) Add a document (doc/standards.txt) that list all kinds of standards
7152 and so on that are implemented in OpenSSL.
7155 *) Enhance c_rehash script. Old version would mishandle certificates
7156 with the same subject name hash and wouldn't handle CRLs at all.
7157 Added -fingerprint option to crl utility, to support new c_rehash
7161 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
7164 *) Fix for SSL server purpose checking. Server checking was
7165 rejecting certificates which had extended key usage present
7166 but no ssl client purpose.
7167 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
7169 *) Make PKCS#12 code work with no password. The PKCS#12 spec
7170 is a little unclear about how a blank password is handled.
7171 Since the password in encoded as a BMPString with terminating
7172 double NULL a zero length password would end up as just the
7173 double NULL. However no password at all is different and is
7174 handled differently in the PKCS#12 key generation code. NS
7175 treats a blank password as zero length. MSIE treats it as no
7176 password on export: but it will try both on import. We now do
7177 the same: PKCS12_parse() tries zero length and no password if
7178 the password is set to "" or NULL (NULL is now a valid password:
7179 it wasn't before) as does the pkcs12 application.
7182 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
7183 perror when PEM_read_bio_X509_REQ fails, the error message must
7184 be obtained from the error queue.
7187 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
7188 it in ERR_remove_state if appropriate, and change ERR_get_state
7189 accordingly to avoid race conditions (this is necessary because
7190 thread_hash is no longer constant once set).
7193 *) Bugfix for linux-elf makefile.one.
7196 *) RSA_get_default_method() will now cause a default
7197 RSA_METHOD to be chosen if one doesn't exist already.
7198 Previously this was only set during a call to RSA_new()
7199 or RSA_new_method(NULL) meaning it was possible for
7200 RSA_get_default_method() to return NULL.
7203 *) Added native name translation to the existing DSO code
7204 that will convert (if the flag to do so is set) filenames
7205 that are sufficiently small and have no path information
7206 into a canonical native form. Eg. "blah" converted to
7207 "libblah.so" or "blah.dll" etc.
7210 *) New function ERR_error_string_n(e, buf, len) which is like
7211 ERR_error_string(e, buf), but writes at most 'len' bytes
7212 including the 0 terminator. For ERR_error_string_n, 'buf'
7214 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
7216 *) CONF library reworked to become more general. A new CONF
7217 configuration file reader "class" is implemented as well as a
7218 new functions (NCONF_*, for "New CONF") to handle it. The now
7219 old CONF_* functions are still there, but are reimplemented to
7220 work in terms of the new functions. Also, a set of functions
7221 to handle the internal storage of the configuration data is
7222 provided to make it easier to write new configuration file
7223 reader "classes" (I can definitely see something reading a
7224 configuration file in XML format, for example), called _CONF_*,
7225 or "the configuration storage API"...
7227 The new configuration file reading functions are:
7229 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
7230 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
7232 NCONF_default, NCONF_WIN32
7234 NCONF_dump_fp, NCONF_dump_bio
7236 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
7237 NCONF_new creates a new CONF object. This works in the same way
7238 as other interfaces in OpenSSL, like the BIO interface.
7239 NCONF_dump_* dump the internal storage of the configuration file,
7240 which is useful for debugging. All other functions take the same
7241 arguments as the old CONF_* functions wth the exception of the
7242 first that must be a `CONF *' instead of a `LHASH *'.
7244 To make it easer to use the new classes with the old CONF_* functions,
7245 the function CONF_set_default_method is provided.
7248 *) Add '-tls1' option to 'openssl ciphers', which was already
7249 mentioned in the documentation but had not been implemented.
7250 (This option is not yet really useful because even the additional
7251 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
7254 *) Initial DSO code added into libcrypto for letting OpenSSL (and
7255 OpenSSL-based applications) load shared libraries and bind to
7256 them in a portable way.
7257 [Geoff Thorpe, with contributions from Richard Levitte]
7259 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
7261 *) Make sure _lrotl and _lrotr are only used with MSVC.
7263 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
7264 (the default implementation of RAND_status).
7266 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
7267 to '-clrext' (= clear extensions), as intended and documented.
7268 [Bodo Moeller; inconsistency pointed out by Michael Attili
7271 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
7272 was larger than the MD block size.
7273 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
7275 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
7276 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
7277 using the passed key: if the passed key was a private key the result
7278 of X509_print(), for example, would be to print out all the private key
7282 *) des_quad_cksum() byte order bug fix.
7283 [Ulf Möller, using the problem description in krb4-0.9.7, where
7284 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
7286 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
7288 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
7290 *) For easily testing in shell scripts whether some command
7291 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
7292 returns with exit code 0 iff no command of the given name is available.
7293 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
7294 the output goes to stdout and nothing is printed to stderr.
7295 Additional arguments are always ignored.
7297 Since for each cipher there is a command of the same name,
7298 the 'no-cipher' compilation switches can be tested this way.
7300 ('openssl no-XXX' is not able to detect pseudo-commands such
7301 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
7304 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
7307 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
7308 is set; it will be thrown away anyway because each handshake creates
7310 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
7311 to parameters -- in previous versions (since OpenSSL 0.9.3) the
7312 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
7313 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
7316 *) New s_client option -ign_eof: EOF at stdin is ignored, and
7317 'Q' and 'R' lose their special meanings (quit/renegotiate).
7318 This is part of what -quiet does; unlike -quiet, -ign_eof
7319 does not suppress any output.
7322 *) Add compatibility options to the purpose and trust code. The
7323 purpose X509_PURPOSE_ANY is "any purpose" which automatically
7324 accepts a certificate or CA, this was the previous behaviour,
7325 with all the associated security issues.
7327 X509_TRUST_COMPAT is the old trust behaviour: only and
7328 automatically trust self signed roots in certificate store. A
7329 new trust setting X509_TRUST_DEFAULT is used to specify that
7330 a purpose has no associated trust setting and it should instead
7331 use the value in the default purpose.
7334 *) Fix the PKCS#8 DSA private key code so it decodes keys again
7335 and fix a memory leak.
7338 *) In util/mkerr.pl (which implements 'make errors'), preserve
7339 reason strings from the previous version of the .c file, as
7340 the default to have only downcase letters (and digits) in
7341 automatically generated reasons codes is not always appropriate.
7344 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
7345 using strerror. Previously, ERR_reason_error_string() returned
7346 library names as reason strings for SYSerr; but SYSerr is a special
7347 case where small numbers are errno values, not library numbers.
7350 *) Add '-dsaparam' option to 'openssl dhparam' application. This
7351 converts DSA parameters into DH parameters. (When creating parameters,
7352 DSA_generate_parameters is used.)
7355 *) Include 'length' (recommended exponent length) in C code generated
7356 by 'openssl dhparam -C'.
7359 *) The second argument to set_label in perlasm was already being used
7360 so couldn't be used as a "file scope" flag. Moved to third argument
7364 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
7365 instead of RAND_bytes for encryption IVs and salts.
7368 *) Include RAND_status() into RAND_METHOD instead of implementing
7369 it only for md_rand.c Otherwise replacing the PRNG by calling
7370 RAND_set_rand_method would be impossible.
7373 *) Don't let DSA_generate_key() enter an infinite loop if the random
7374 number generation fails.
7377 *) New 'rand' application for creating pseudo-random output.
7380 *) Added configuration support for Linux/IA64
7381 [Rolf Haberrecker <rolf@suse.de>]
7383 *) Assembler module support for Mingw32.
7386 *) Shared library support for HPUX (in shlib/).
7387 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
7389 *) Shared library support for Solaris gcc.
7390 [Lutz Behnke <behnke@trustcenter.de>]
7392 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
7394 *) PKCS7_encrypt() was adding text MIME headers twice because they
7395 were added manually and by SMIME_crlf_copy().
7398 *) In bntest.c don't call BN_rand with zero bits argument.
7399 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
7401 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
7402 case was implemented. This caused BN_div_recp() to fail occasionally.
7405 *) Add an optional second argument to the set_label() in the perl
7406 assembly language builder. If this argument exists and is set
7407 to 1 it signals that the assembler should use a symbol whose
7408 scope is the entire file, not just the current function. This
7409 is needed with MASM which uses the format label:: for this scope.
7410 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
7412 *) Change the ASN1 types so they are typedefs by default. Before
7413 almost all types were #define'd to ASN1_STRING which was causing
7414 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
7418 *) Change names of new functions to the new get1/get0 naming
7419 convention: After 'get1', the caller owns a reference count
7420 and has to call ..._free; 'get0' returns a pointer to some
7421 data structure without incrementing reference counters.
7422 (Some of the existing 'get' functions increment a reference
7423 counter, some don't.)
7424 Similarly, 'set1' and 'add1' functions increase reference
7425 counters or duplicate objects.
7428 *) Allow for the possibility of temp RSA key generation failure:
7429 the code used to assume it always worked and crashed on failure.
7432 *) Fix potential buffer overrun problem in BIO_printf().
7433 [Ulf Möller, using public domain code by Patrick Powell; problem
7434 pointed out by David Sacerdote <das33@cornell.edu>]
7436 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
7437 RAND_egd() and RAND_status(). In the command line application,
7438 the EGD socket can be specified like a seed file using RANDFILE
7442 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
7443 Some CAs (e.g. Verisign) distribute certificates in this form.
7446 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
7447 list to exclude them. This means that no special compilation option
7448 is needed to use anonymous DH: it just needs to be included in the
7452 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
7453 EVP_MD_type. The old functionality is available in a new macro called
7454 EVP_MD_md(). Change code that uses it and update docs.
7457 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
7458 where the 'void *' argument is replaced by a function pointer argument.
7459 Previously 'void *' was abused to point to functions, which works on
7460 many platforms, but is not correct. As these functions are usually
7461 called by macros defined in OpenSSL header files, most source code
7462 should work without changes.
7465 *) <openssl/opensslconf.h> (which is created by Configure) now contains
7466 sections with information on -D... compiler switches used for
7467 compiling the library so that applications can see them. To enable
7468 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
7469 must be defined. E.g.,
7470 #define OPENSSL_ALGORITHM_DEFINES
7471 #include <openssl/opensslconf.h>
7472 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
7473 [Richard Levitte, Ulf and Bodo Möller]
7475 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
7479 *) Change the 'other' type in certificate aux info to a STACK_OF
7480 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
7481 the required ASN1 format: arbitrary types determined by an OID.
7484 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
7485 argument to 'req'. This is not because the function is newer or
7486 better than others it just uses the work 'NEW' in the certificate
7487 request header lines. Some software needs this.
7490 *) Reorganise password command line arguments: now passwords can be
7491 obtained from various sources. Delete the PEM_cb function and make
7492 it the default behaviour: i.e. if the callback is NULL and the
7493 usrdata argument is not NULL interpret it as a null terminated pass
7494 phrase. If usrdata and the callback are NULL then the pass phrase
7495 is prompted for as usual.
7498 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
7499 the support is automatically enabled. The resulting binaries will
7500 autodetect the card and use it if present.
7501 [Ben Laurie and Compaq Inc.]
7503 *) Work around for Netscape hang bug. This sends certificate request
7504 and server done in one record. Since this is perfectly legal in the
7505 SSL/TLS protocol it isn't a "bug" option and is on by default. See
7506 the bugs/SSLv3 entry for more info.
7509 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
7512 *) Add -rand argument to smime and pkcs12 applications and read/write
7516 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
7519 *) Add command line password options to the remaining applications.
7522 *) Bug fix for BN_div_recp() for numerators with an even number of
7526 *) More tests in bntest.c, and changed test_bn output.
7529 *) ./config recognizes MacOS X now.
7532 *) Bug fix for BN_div() when the first words of num and divsor are
7533 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
7536 *) Add support for various broken PKCS#8 formats, and command line
7537 options to produce them.
7540 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
7541 get temporary BIGNUMs from a BN_CTX.
7544 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
7548 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
7549 include a #define from the old name to the new. The original intent
7550 was that statically linked binaries could for example just call
7551 SSLeay_add_all_ciphers() to just add ciphers to the table and not
7552 link with digests. This never worked becayse SSLeay_add_all_digests()
7553 and SSLeay_add_all_ciphers() were in the same source file so calling
7554 one would link with the other. They are now in separate source files.
7557 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
7560 *) Use a less unusual form of the Miller-Rabin primality test (it used
7561 a binary algorithm for exponentiation integrated into the Miller-Rabin
7562 loop, our standard modexp algorithms are faster).
7565 *) Support for the EBCDIC character set completed.
7566 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
7568 *) Source code cleanups: use const where appropriate, eliminate casts,
7569 use void * instead of char * in lhash.
7572 *) Bugfix: ssl3_send_server_key_exchange was not restartable
7573 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
7574 this the server could overwrite ephemeral keys that the client
7578 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
7579 using 50 iterations of the Rabin-Miller test.
7581 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
7582 iterations of the Rabin-Miller test as required by the appendix
7583 to FIPS PUB 186[-1]) instead of DSA_is_prime.
7584 As BN_is_prime_fasttest includes trial division, DSA parameter
7585 generation becomes much faster.
7587 This implies a change for the callback functions in DSA_is_prime
7588 and DSA_generate_parameters: The callback function is called once
7589 for each positive witness in the Rabin-Miller test, not just
7590 occasionally in the inner loop; and the parameters to the
7591 callback function now provide an iteration count for the outer
7592 loop rather than for the current invocation of the inner loop.
7593 DSA_generate_parameters additionally can call the callback
7594 function with an 'iteration count' of -1, meaning that a
7595 candidate has passed the trial division test (when q is generated
7596 from an application-provided seed, trial division is skipped).
7599 *) New function BN_is_prime_fasttest that optionally does trial
7600 division before starting the Rabin-Miller test and has
7601 an additional BN_CTX * argument (whereas BN_is_prime always
7602 has to allocate at least one BN_CTX).
7603 'callback(1, -1, cb_arg)' is called when a number has passed the
7604 trial division stage.
7607 *) Fix for bug in CRL encoding. The validity dates weren't being handled
7611 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
7614 *) New function BN_pseudo_rand().
7617 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
7618 bignum version of BN_from_montgomery() with the working code from
7619 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
7623 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
7624 made it impossible to use the same SSL_SESSION data structure in
7625 SSL2 clients in multiple threads.
7628 *) The return value of RAND_load_file() no longer counts bytes obtained
7629 by stat(). RAND_load_file(..., -1) is new and uses the complete file
7630 to seed the PRNG (previously an explicit byte count was required).
7631 [Ulf Möller, Bodo Möller]
7633 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
7634 used (char *) instead of (void *) and had casts all over the place.
7637 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
7640 *) Retain source code compatibility for BN_prime_checks macro:
7641 BN_is_prime(..., BN_prime_checks, ...) now uses
7642 BN_prime_checks_for_size to determine the appropriate number of
7643 Rabin-Miller iterations.
7646 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
7647 DH_CHECK_P_NOT_SAFE_PRIME.
7648 (Check if this is true? OpenPGP calls them "strong".)
7651 *) Merge the functionality of "dh" and "gendh" programs into a new program
7652 "dhparam". The old programs are retained for now but will handle DH keys
7653 (instead of parameters) in future.
7656 *) Make the ciphers, s_server and s_client programs check the return values
7657 when a new cipher list is set.
7660 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
7661 ciphers. Before when the 56bit ciphers were enabled the sorting was
7664 The syntax for the cipher sorting has been extended to support sorting by
7665 cipher-strength (using the strength_bits hard coded in the tables).
7666 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
7668 Fix a bug in the cipher-command parser: when supplying a cipher command
7669 string with an "undefined" symbol (neither command nor alphanumeric
7670 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
7671 an error is flagged.
7673 Due to the strength-sorting extension, the code of the
7674 ssl_create_cipher_list() function was completely rearranged. I hope that
7675 the readability was also increased :-)
7676 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7678 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
7679 for the first serial number and places 2 in the serial number file. This
7680 avoids problems when the root CA is created with serial number zero and
7681 the first user certificate has the same issuer name and serial number
7685 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
7686 the new code. Add documentation for this stuff.
7689 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
7690 X509_*() to X509at_*() on the grounds that they don't handle X509
7691 structures and behave in an analagous way to the X509v3 functions:
7692 they shouldn't be called directly but wrapper functions should be used
7695 So we also now have some wrapper functions that call the X509at functions
7696 when passed certificate requests. (TO DO: similar things can be done with
7697 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
7698 things. Some of these need some d2i or i2d and print functionality
7699 because they handle more complex structures.)
7702 *) Add missing #ifndefs that caused missing symbols when building libssl
7703 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
7704 NO_RSA in ssl/s2*.c.
7705 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
7707 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
7708 has a return value which indicates the quality of the random data
7709 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
7710 error queue. New function RAND_pseudo_bytes() generates output that is
7711 guaranteed to be unique but not unpredictable. RAND_add is like
7712 RAND_seed, but takes an extra argument for an entropy estimate
7713 (RAND_seed always assumes full entropy).
7716 *) Do more iterations of Rabin-Miller probable prime test (specifically,
7717 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
7718 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
7719 in crypto/bn/bn_prime.c for the complete table). This guarantees a
7720 false-positive rate of at most 2^-80 for random input.
7723 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
7726 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
7727 in the 0.9.5 release), this returns the chain
7728 from an X509_CTX structure with a dup of the stack and all
7729 the X509 reference counts upped: so the stack will exist
7730 after X509_CTX_cleanup() has been called. Modify pkcs12.c
7733 Also make SSL_SESSION_print() print out the verify return
7737 *) Add manpage for the pkcs12 command. Also change the default
7738 behaviour so MAC iteration counts are used unless the new
7739 -nomaciter option is used. This improves file security and
7740 only older versions of MSIE (4.0 for example) need it.
7743 *) Honor the no-xxx Configure options when creating .DEF files.
7746 *) Add PKCS#10 attributes to field table: challengePassword,
7747 unstructuredName and unstructuredAddress. These are taken from
7748 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
7749 international characters are used.
7751 More changes to X509_ATTRIBUTE code: allow the setting of types
7752 based on strings. Remove the 'loc' parameter when adding
7753 attributes because these will be a SET OF encoding which is sorted
7757 *) Initial changes to the 'req' utility to allow request generation
7758 automation. This will allow an application to just generate a template
7759 file containing all the field values and have req construct the
7762 Initial support for X509_ATTRIBUTE handling. Stacks of these are
7763 used all over the place including certificate requests and PKCS#7
7764 structures. They are currently handled manually where necessary with
7765 some primitive wrappers for PKCS#7. The new functions behave in a
7766 manner analogous to the X509 extension functions: they allow
7767 attributes to be looked up by NID and added.
7769 Later something similar to the X509V3 code would be desirable to
7770 automatically handle the encoding, decoding and printing of the
7771 more complex types. The string types like challengePassword can
7772 be handled by the string table functions.
7774 Also modified the multi byte string table handling. Now there is
7775 a 'global mask' which masks out certain types. The table itself
7776 can use the flag STABLE_NO_MASK to ignore the mask setting: this
7777 is useful when for example there is only one permissible type
7778 (as in countryName) and using the mask might result in no valid
7782 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
7783 SSL_get_peer_finished to allow applications to obtain the latest
7784 Finished messages sent to the peer or expected from the peer,
7785 respectively. (SSL_get_peer_finished is usually the Finished message
7786 actually received from the peer, otherwise the protocol will be aborted.)
7788 As the Finished message are message digests of the complete handshake
7789 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
7790 be used for external authentication procedures when the authentication
7791 provided by SSL/TLS is not desired or is not enough.
7794 *) Enhanced support for Alpha Linux is added. Now ./config checks if
7795 the host supports BWX extension and if Compaq C is present on the
7796 $PATH. Just exploiting of the BWX extension results in 20-30%
7797 performance kick for some algorithms, e.g. DES and RC4 to mention
7798 a couple. Compaq C in turn generates ~20% faster code for MD5 and
7802 *) Add support for MS "fast SGC". This is arguably a violation of the
7803 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
7804 weak crypto and after checking the certificate is SGC a second one
7805 with strong crypto. MS SGC stops the first handshake after receiving
7806 the server certificate message and sends a second client hello. Since
7807 a server will typically do all the time consuming operations before
7808 expecting any further messages from the client (server key exchange
7809 is the most expensive) there is little difference between the two.
7811 To get OpenSSL to support MS SGC we have to permit a second client
7812 hello message after we have sent server done. In addition we have to
7813 reset the MAC if we do get this second client hello.
7816 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
7817 if a DER encoded private key is RSA or DSA traditional format. Changed
7818 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
7819 format DER encoded private key. Newer code should use PKCS#8 format which
7820 has the key type encoded in the ASN1 structure. Added DER private key
7821 support to pkcs8 application.
7824 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
7825 ciphersuites has been selected (as required by the SSL 3/TLS 1
7826 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
7827 is set, we interpret this as a request to violate the specification
7828 (the worst that can happen is a handshake failure, and 'correct'
7829 behaviour would result in a handshake failure anyway).
7832 *) In SSL_CTX_add_session, take into account that there might be multiple
7833 SSL_SESSION structures with the same session ID (e.g. when two threads
7834 concurrently obtain them from an external cache).
7835 The internal cache can handle only one SSL_SESSION with a given ID,
7836 so if there's a conflict, we now throw out the old one to achieve
7840 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
7841 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
7842 some routines that use cipher OIDs: some ciphers do not have OIDs
7843 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
7847 *) Simplify the trust setting structure and code. Now we just have
7848 two sequences of OIDs for trusted and rejected settings. These will
7849 typically have values the same as the extended key usage extension
7850 and any application specific purposes.
7852 The trust checking code now has a default behaviour: it will just
7853 check for an object with the same NID as the passed id. Functions can
7854 be provided to override either the default behaviour or the behaviour
7855 for a given id. SSL client, server and email already have functions
7856 in place for compatibility: they check the NID and also return "trusted"
7857 if the certificate is self signed.
7860 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
7861 traditional format into an EVP_PKEY structure.
7864 *) Add a password callback function PEM_cb() which either prompts for
7865 a password if usr_data is NULL or otherwise assumes it is a null
7866 terminated password. Allow passwords to be passed on command line
7867 environment or config files in a few more utilities.
7870 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
7871 keys. Add some short names for PKCS#8 PBE algorithms and allow them
7872 to be specified on the command line for the pkcs8 and pkcs12 utilities.
7873 Update documentation.
7876 *) Support for ASN1 "NULL" type. This could be handled before by using
7877 ASN1_TYPE but there wasn't any function that would try to read a NULL
7878 and produce an error if it couldn't. For compatibility we also have
7879 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
7880 don't allocate anything because they don't need to.
7883 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
7885 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
7887 *) Rebuild of the memory allocation routines used by OpenSSL code and
7888 possibly others as well. The purpose is to make an interface that
7889 provide hooks so anyone can build a separate set of allocation and
7890 deallocation routines to be used by OpenSSL, for example memory
7891 pool implementations, or something else, which was previously hard
7892 since Malloc(), Realloc() and Free() were defined as macros having
7893 the values malloc, realloc and free, respectively (except for Win32
7894 compilations). The same is provided for memory debugging code.
7895 OpenSSL already comes with functionality to find memory leaks, but
7896 this gives people a chance to debug other memory problems.
7898 With these changes, a new set of functions and macros have appeared:
7900 CRYPTO_set_mem_debug_functions() [F]
7901 CRYPTO_get_mem_debug_functions() [F]
7902 CRYPTO_dbg_set_options() [F]
7903 CRYPTO_dbg_get_options() [F]
7904 CRYPTO_malloc_debug_init() [M]
7906 The memory debug functions are NULL by default, unless the library
7907 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
7908 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
7909 gives the standard debugging functions that come with OpenSSL) or
7910 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
7911 provided by the library user) must be used. When the standard
7912 debugging functions are used, CRYPTO_dbg_set_options can be used to
7913 request additional information:
7914 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
7915 the CRYPTO_MDEBUG_xxx macro when compiling the library.
7917 Also, things like CRYPTO_set_mem_functions will always give the
7918 expected result (the new set of functions is used for allocation
7919 and deallocation) at all times, regardless of platform and compiler
7922 To finish it up, some functions that were never use in any other
7923 way than through macros have a new API and new semantic:
7926 CRYPTO_dbg_realloc()
7929 All macros of value have retained their old syntax.
7930 [Richard Levitte and Bodo Moeller]
7932 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
7933 ordering of SMIMECapabilities wasn't in "strength order" and there
7934 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
7938 *) Some ASN1 types with illegal zero length encoding (INTEGER,
7939 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
7940 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
7942 *) Merge in my S/MIME library for OpenSSL. This provides a simple
7943 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
7944 functionality to handle multipart/signed properly) and a utility
7945 called 'smime' to call all this stuff. This is based on code I
7946 originally wrote for Celo who have kindly allowed it to be
7947 included in OpenSSL.
7950 *) Add variants des_set_key_checked and des_set_key_unchecked of
7951 des_set_key (aka des_key_sched). Global variable des_check_key
7952 decides which of these is called by des_set_key; this way
7953 des_check_key behaves as it always did, but applications and
7954 the library itself, which was buggy for des_check_key == 1,
7955 have a cleaner way to pick the version they need.
7958 *) New function PKCS12_newpass() which changes the password of a
7962 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
7963 dynamic mix. In both cases the ids can be used as an index into the
7964 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
7965 functions so they accept a list of the field values and the
7966 application doesn't need to directly manipulate the X509_TRUST
7970 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
7974 *) Modify the way the V3 extension code looks up extensions. This now
7975 works in a similar way to the object code: we have some "standard"
7976 extensions in a static table which is searched with OBJ_bsearch()
7977 and the application can add dynamic ones if needed. The file
7978 crypto/x509v3/ext_dat.h now has the info: this file needs to be
7979 updated whenever a new extension is added to the core code and kept
7980 in ext_nid order. There is a simple program 'tabtest.c' which checks
7981 this. New extensions are not added too often so this file can readily
7982 be maintained manually.
7984 There are two big advantages in doing things this way. The extensions
7985 can be looked up immediately and no longer need to be "added" using
7986 X509V3_add_standard_extensions(): this function now does nothing.
7987 [Side note: I get *lots* of email saying the extension code doesn't
7988 work because people forget to call this function]
7989 Also no dynamic allocation is done unless new extensions are added:
7990 so if we don't add custom extensions there is no need to call
7991 X509V3_EXT_cleanup().
7994 *) Modify enc utility's salting as follows: make salting the default. Add a
7995 magic header, so unsalted files fail gracefully instead of just decrypting
7996 to garbage. This is because not salting is a big security hole, so people
7997 should be discouraged from doing it.
8000 *) Fixes and enhancements to the 'x509' utility. It allowed a message
8001 digest to be passed on the command line but it only used this
8002 parameter when signing a certificate. Modified so all relevant
8003 operations are affected by the digest parameter including the
8004 -fingerprint and -x509toreq options. Also -x509toreq choked if a
8005 DSA key was used because it didn't fix the digest.
8008 *) Initial certificate chain verify code. Currently tests the untrusted
8009 certificates for consistency with the verify purpose (which is set
8010 when the X509_STORE_CTX structure is set up) and checks the pathlength.
8012 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
8013 this is because it will reject chains with invalid extensions whereas
8014 every previous version of OpenSSL and SSLeay made no checks at all.
8016 Trust code: checks the root CA for the relevant trust settings. Trust
8017 settings have an initial value consistent with the verify purpose: e.g.
8018 if the verify purpose is for SSL client use it expects the CA to be
8019 trusted for SSL client use. However the default value can be changed to
8020 permit custom trust settings: one example of this would be to only trust
8021 certificates from a specific "secure" set of CAs.
8023 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
8024 which should be used for version portability: especially since the
8025 verify structure is likely to change more often now.
8027 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
8028 to set them. If not set then assume SSL clients will verify SSL servers
8031 Two new options to the verify program: -untrusted allows a set of
8032 untrusted certificates to be passed in and -purpose which sets the
8033 intended purpose of the certificate. If a purpose is set then the
8034 new chain verify code is used to check extension consistency.
8037 *) Support for the authority information access extension.
8040 *) Modify RSA and DSA PEM read routines to transparently handle
8041 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
8042 public keys in a format compatible with certificate
8043 SubjectPublicKeyInfo structures. Unfortunately there were already
8044 functions called *_PublicKey_* which used various odd formats so
8045 these are retained for compatibility: however the DSA variants were
8046 never in a public release so they have been deleted. Changed dsa/rsa
8047 utilities to handle the new format: note no releases ever handled public
8048 keys so we should be OK.
8050 The primary motivation for this change is to avoid the same fiasco
8051 that dogs private keys: there are several incompatible private key
8052 formats some of which are standard and some OpenSSL specific and
8053 require various evil hacks to allow partial transparent handling and
8054 even then it doesn't work with DER formats. Given the option anything
8055 other than PKCS#8 should be dumped: but the other formats have to
8056 stay in the name of compatibility.
8058 With public keys and the benefit of hindsight one standard format
8059 is used which works with EVP_PKEY, RSA or DSA structures: though
8060 it clearly returns an error if you try to read the wrong kind of key.
8062 Added a -pubkey option to the 'x509' utility to output the public key.
8063 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
8064 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
8065 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
8066 that do the same as the EVP_PKEY_assign_*() except they up the
8067 reference count of the added key (they don't "swallow" the
8071 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
8072 CRLs would fail if the file contained no certificates or no CRLs:
8073 added a new function to read in both types and return the number
8074 read: this means that if none are read it will be an error. The
8075 DER versions of the certificate and CRL reader would always fail
8076 because it isn't possible to mix certificates and CRLs in DER format
8077 without choking one or the other routine. Changed this to just read
8078 a certificate: this is the best we can do. Also modified the code
8079 in apps/verify.c to take notice of return codes: it was previously
8080 attempting to read in certificates from NULL pointers and ignoring
8081 any errors: this is one reason why the cert and CRL reader seemed
8082 to work. It doesn't check return codes from the default certificate
8083 routines: these may well fail if the certificates aren't installed.
8086 *) Code to support otherName option in GeneralName.
8089 *) First update to verify code. Change the verify utility
8090 so it warns if it is passed a self signed certificate:
8091 for consistency with the normal behaviour. X509_verify
8092 has been modified to it will now verify a self signed
8093 certificate if *exactly* the same certificate appears
8094 in the store: it was previously impossible to trust a
8095 single self signed certificate. This means that:
8096 openssl verify ss.pem
8097 now gives a warning about a self signed certificate but
8098 openssl verify -CAfile ss.pem ss.pem
8102 *) For servers, store verify_result in SSL_SESSION data structure
8103 (and add it to external session representation).
8104 This is needed when client certificate verifications fails,
8105 but an application-provided verification callback (set by
8106 SSL_CTX_set_cert_verify_callback) allows accepting the session
8107 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
8108 but returns 1): When the session is reused, we have to set
8109 ssl->verify_result to the appropriate error code to avoid
8111 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
8113 *) Fix a bug in the new PKCS#7 code: it didn't consider the
8114 case in PKCS7_dataInit() where the signed PKCS7 structure
8115 didn't contain any existing data because it was being created.
8116 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
8118 *) Add a salt to the key derivation routines in enc.c. This
8119 forms the first 8 bytes of the encrypted file. Also add a
8120 -S option to allow a salt to be input on the command line.
8123 *) New function X509_cmp(). Oddly enough there wasn't a function
8124 to compare two certificates. We do this by working out the SHA1
8125 hash and comparing that. X509_cmp() will be needed by the trust
8129 *) SSL_get1_session() is like SSL_get_session(), but increments
8130 the reference count in the SSL_SESSION returned.
8131 [Geoff Thorpe <geoff@eu.c2.net>]
8133 *) Fix for 'req': it was adding a null to request attributes.
8134 Also change the X509_LOOKUP and X509_INFO code to handle
8135 certificate auxiliary information.
8138 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
8142 *) Add the possibility to add extra information to the memory leak
8143 detecting output, to form tracebacks, showing from where each
8144 allocation was originated: CRYPTO_push_info("constant string") adds
8145 the string plus current file name and line number to a per-thread
8146 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
8147 is like calling CYRPTO_pop_info() until the stack is empty.
8148 Also updated memory leak detection code to be multi-thread-safe.
8151 *) Add options -text and -noout to pkcs7 utility and delete the
8152 encryption options which never did anything. Update docs.
8155 *) Add options to some of the utilities to allow the pass phrase
8156 to be included on either the command line (not recommended on
8157 OSes like Unix) or read from the environment. Update the
8158 manpages and fix a few bugs.
8161 *) Add a few manpages for some of the openssl commands.
8164 *) Fix the -revoke option in ca. It was freeing up memory twice,
8165 leaking and not finding already revoked certificates.
8168 *) Extensive changes to support certificate auxiliary information.
8169 This involves the use of X509_CERT_AUX structure and X509_AUX
8170 functions. An X509_AUX function such as PEM_read_X509_AUX()
8171 can still read in a certificate file in the usual way but it
8172 will also read in any additional "auxiliary information". By
8173 doing things this way a fair degree of compatibility can be
8174 retained: existing certificates can have this information added
8175 using the new 'x509' options.
8177 Current auxiliary information includes an "alias" and some trust
8178 settings. The trust settings will ultimately be used in enhanced
8179 certificate chain verification routines: currently a certificate
8180 can only be trusted if it is self signed and then it is trusted
8184 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
8185 The problem was that one of the replacement routines had not been working
8186 since SSLeay releases. For now the offending routine has been replaced
8187 with non-optimised assembler. Even so, this now gives around 95%
8188 performance improvement for 1024 bit RSA signs.
8191 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
8192 handling. Most clients have the effective key size in bits equal to
8193 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
8194 A few however don't do this and instead use the size of the decrypted key
8195 to determine the RC2 key length and the AlgorithmIdentifier to determine
8196 the effective key length. In this case the effective key length can still
8197 be 40 bits but the key length can be 168 bits for example. This is fixed
8198 by manually forcing an RC2 key into the EVP_PKEY structure because the
8199 EVP code can't currently handle unusual RC2 key sizes: it always assumes
8200 the key length and effective key length are equal.
8203 *) Add a bunch of functions that should simplify the creation of
8204 X509_NAME structures. Now you should be able to do:
8205 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
8206 and have it automatically work out the correct field type and fill in
8207 the structures. The more adventurous can try:
8208 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
8209 and it will (hopefully) work out the correct multibyte encoding.
8212 *) Change the 'req' utility to use the new field handling and multibyte
8213 copy routines. Before the DN field creation was handled in an ad hoc
8214 way in req, ca, and x509 which was rather broken and didn't support
8215 BMPStrings or UTF8Strings. Since some software doesn't implement
8216 BMPStrings or UTF8Strings yet, they can be enabled using the config file
8217 using the dirstring_type option. See the new comment in the default
8218 openssl.cnf for more info.
8221 *) Make crypto/rand/md_rand.c more robust:
8222 - Assure unique random numbers after fork().
8223 - Make sure that concurrent threads access the global counter and
8224 md serializably so that we never lose entropy in them
8225 or use exactly the same state in multiple threads.
8226 Access to the large state is not always serializable because
8227 the additional locking could be a performance killer, and
8228 md should be large enough anyway.
8231 *) New file apps/app_rand.c with commonly needed functionality
8232 for handling the random seed file.
8234 Use the random seed file in some applications that previously did not:
8236 dsaparam -genkey (which also ignored its '-rand' option),
8239 x509 (when signing).
8240 Except on systems with /dev/urandom, it is crucial to have a random
8241 seed file at least for key creation, DSA signing, and for DH exchanges;
8242 for RSA signatures we could do without one.
8244 gendh and gendsa (unlike genrsa) used to read only the first byte
8245 of each file listed in the '-rand' option. The function as previously
8246 found in genrsa is now in app_rand.c and is used by all programs
8247 that support '-rand'.
8250 *) In RAND_write_file, use mode 0600 for creating files;
8251 don't just chmod when it may be too late.
8254 *) Report an error from X509_STORE_load_locations
8255 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
8258 *) New function ASN1_mbstring_copy() this copies a string in either
8259 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
8260 into an ASN1_STRING type. A mask of permissible types is passed
8261 and it chooses the "minimal" type to use or an error if not type
8265 *) Add function equivalents to the various macros in asn1.h. The old
8266 macros are retained with an M_ prefix. Code inside the library can
8267 use the M_ macros. External code (including the openssl utility)
8268 should *NOT* in order to be "shared library friendly".
8271 *) Add various functions that can check a certificate's extensions
8272 to see if it usable for various purposes such as SSL client,
8273 server or S/MIME and CAs of these types. This is currently
8274 VERY EXPERIMENTAL but will ultimately be used for certificate chain
8275 verification. Also added a -purpose flag to x509 utility to
8276 print out all the purposes.
8279 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
8283 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
8284 for, obtain and decode and extension and obtain its critical flag.
8285 This allows all the necessary extension code to be handled in a
8286 single function call.
8289 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
8290 platforms. See crypto/rc4/rc4_enc.c for further details.
8293 *) New -noout option to asn1parse. This causes no output to be produced
8294 its main use is when combined with -strparse and -out to extract data
8295 from a file (which may not be in ASN.1 format).
8298 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
8299 when producing the local key id.
8300 [Richard Levitte <levitte@stacken.kth.se>]
8302 *) New option -dhparam in s_server. This allows a DH parameter file to be
8303 stated explicitly. If it is not stated then it tries the first server
8304 certificate file. The previous behaviour hard coded the filename
8308 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
8309 a public key to be input or output. For example:
8310 openssl rsa -in key.pem -pubout -out pubkey.pem
8311 Also added necessary DSA public key functions to handle this.
8314 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
8315 in the message. This was handled by allowing
8316 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
8317 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
8319 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
8320 to the end of the strings whereas this didn't. This would cause problems
8321 if strings read with d2i_ASN1_bytes() were later modified.
8322 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
8324 *) Fix for base64 decode bug. When a base64 bio reads only one line of
8325 data and it contains EOF it will end up returning an error. This is
8326 caused by input 46 bytes long. The cause is due to the way base64
8327 BIOs find the start of base64 encoded data. They do this by trying a
8328 trial decode on each line until they find one that works. When they
8329 do a flag is set and it starts again knowing it can pass all the
8330 data directly through the decoder. Unfortunately it doesn't reset
8331 the context it uses. This means that if EOF is reached an attempt
8332 is made to pass two EOFs through the context and this causes the
8333 resulting error. This can also cause other problems as well. As is
8334 usual with these problems it takes *ages* to find and the fix is
8335 trivial: move one line.
8336 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
8338 *) Ugly workaround to get s_client and s_server working under Windows. The
8339 old code wouldn't work because it needed to select() on sockets and the
8340 tty (for keypresses and to see if data could be written). Win32 only
8341 supports select() on sockets so we select() with a 1s timeout on the
8342 sockets and then see if any characters are waiting to be read, if none
8343 are present then we retry, we also assume we can always write data to
8344 the tty. This isn't nice because the code then blocks until we've
8345 received a complete line of data and it is effectively polling the
8346 keyboard at 1s intervals: however it's quite a bit better than not
8347 working at all :-) A dedicated Windows application might handle this
8348 with an event loop for example.
8351 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
8352 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
8353 will be called when RSA_sign() and RSA_verify() are used. This is useful
8354 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
8355 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
8356 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
8357 This necessitated the support of an extra signature type NID_md5_sha1
8358 for SSL signatures and modifications to the SSL library to use it instead
8359 of calling RSA_public_decrypt() and RSA_private_encrypt().
8362 *) Add new -verify -CAfile and -CApath options to the crl program, these
8363 will lookup a CRL issuers certificate and verify the signature in a
8364 similar way to the verify program. Tidy up the crl program so it
8365 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
8366 less strict. It will now permit CRL extensions even if it is not
8367 a V2 CRL: this will allow it to tolerate some broken CRLs.
8370 *) Initialize all non-automatic variables each time one of the openssl
8371 sub-programs is started (this is necessary as they may be started
8372 multiple times from the "OpenSSL>" prompt).
8373 [Lennart Bang, Bodo Moeller]
8375 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
8376 removing all other RSA functionality (this is what NO_RSA does). This
8377 is so (for example) those in the US can disable those operations covered
8378 by the RSA patent while allowing storage and parsing of RSA keys and RSA
8382 *) Non-copying interface to BIO pairs.
8383 (still largely untested)
8386 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
8387 ASCII string. This was handled independently in various places before.
8390 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
8391 UTF8 strings a character at a time.
8394 *) Use client_version from client hello to select the protocol
8395 (s23_srvr.c) and for RSA client key exchange verification
8396 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
8399 *) Add various utility functions to handle SPKACs, these were previously
8400 handled by poking round in the structure internals. Added new function
8401 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
8402 print, verify and generate SPKACs. Based on an original idea from
8403 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
8406 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
8409 *) Allow the config file extension section to be overwritten on the
8410 command line. Based on an original idea from Massimiliano Pala
8411 <madwolf@comune.modena.it>. The new option is called -extensions
8412 and can be applied to ca, req and x509. Also -reqexts to override
8413 the request extensions in req and -crlexts to override the crl extensions
8417 *) Add new feature to the SPKAC handling in ca. Now you can include
8418 the same field multiple times by preceding it by "XXXX." for example:
8421 this is the same syntax as used in the req config file.
8424 *) Allow certificate extensions to be added to certificate requests. These
8425 are specified in a 'req_extensions' option of the req section of the
8426 config file. They can be printed out with the -text option to req but
8427 are otherwise ignored at present.
8430 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
8431 data read consists of only the final block it would not decrypted because
8432 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
8433 A misplaced 'break' also meant the decrypted final block might not be
8434 copied until the next read.
8437 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
8438 a few extra parameters to the DH structure: these will be useful if
8439 for example we want the value of 'q' or implement X9.42 DH.
8442 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
8443 provides hooks that allow the default DSA functions or functions on a
8444 "per key" basis to be replaced. This allows hardware acceleration and
8445 hardware key storage to be handled without major modification to the
8446 library. Also added low level modexp hooks and CRYPTO_EX structure and
8447 associated functions.
8450 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
8451 as "read only": it can't be written to and the buffer it points to will
8452 not be freed. Reading from a read only BIO is much more efficient than
8453 a normal memory BIO. This was added because there are several times when
8454 an area of memory needs to be read from a BIO. The previous method was
8455 to create a memory BIO and write the data to it, this results in two
8456 copies of the data and an O(n^2) reading algorithm. There is a new
8457 function BIO_new_mem_buf() which creates a read only memory BIO from
8458 an area of memory. Also modified the PKCS#7 routines to use read only
8462 *) Bugfix: ssl23_get_client_hello did not work properly when called in
8463 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
8464 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
8465 but a retry condition occured while trying to read the rest.
8468 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
8469 NID_pkcs7_encrypted by default: this was wrong since this should almost
8470 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
8471 the encrypted data type: this is a more sensible place to put it and it
8472 allows the PKCS#12 code to be tidied up that duplicated this
8476 *) Changed obj_dat.pl script so it takes its input and output files on
8477 the command line. This should avoid shell escape redirection problems
8481 *) Initial support for certificate extension requests, these are included
8482 in things like Xenroll certificate requests. Included functions to allow
8483 extensions to be obtained and added.
8486 *) -crlf option to s_client and s_server for sending newlines as
8487 CRLF (as required by many protocols).
8490 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
8492 *) Install libRSAglue.a when OpenSSL is built with RSAref.
8493 [Ralf S. Engelschall]
8495 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
8496 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
8498 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
8502 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
8503 DH parameters/keys (q is lost during that conversion, but the resulting
8504 DH parameters contain its length).
8506 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
8507 much faster than DH_generate_parameters (which creates parameters
8508 where p = 2*q + 1), and also the smaller q makes DH computations
8509 much more efficient (160-bit exponentiation instead of 1024-bit
8510 exponentiation); so this provides a convenient way to support DHE
8511 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
8512 utter importance to use
8513 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
8515 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
8516 when such DH parameters are used, because otherwise small subgroup
8517 attacks may become possible!
8520 *) Avoid memory leak in i2d_DHparams.
8523 *) Allow the -k option to be used more than once in the enc program:
8524 this allows the same encrypted message to be read by multiple recipients.
8527 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
8528 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
8529 it will always use the numerical form of the OID, even if it has a short
8533 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
8534 method only got called if p,q,dmp1,dmq1,iqmp components were present,
8535 otherwise bn_mod_exp was called. In the case of hardware keys for example
8536 no private key components need be present and it might store extra data
8537 in the RSA structure, which cannot be accessed from bn_mod_exp.
8538 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
8539 private key operations.
8542 *) Added support for SPARC Linux.
8545 *) pem_password_cb function type incompatibly changed from
8546 typedef int pem_password_cb(char *buf, int size, int rwflag);
8548 ....(char *buf, int size, int rwflag, void *userdata);
8549 so that applications can pass data to their callbacks:
8550 The PEM[_ASN1]_{read,write}... functions and macros now take an
8551 additional void * argument, which is just handed through whenever
8552 the password callback is called.
8553 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
8555 New function SSL_CTX_set_default_passwd_cb_userdata.
8557 Compatibility note: As many C implementations push function arguments
8558 onto the stack in reverse order, the new library version is likely to
8559 interoperate with programs that have been compiled with the old
8560 pem_password_cb definition (PEM_whatever takes some data that
8561 happens to be on the stack as its last argument, and the callback
8562 just ignores this garbage); but there is no guarantee whatsoever that
8565 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
8566 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
8567 problems not only on Windows, but also on some Unix platforms.
8568 To avoid problematic command lines, these definitions are now in an
8569 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
8570 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
8573 *) MIPS III/IV assembler module is reimplemented.
8576 *) More DES library cleanups: remove references to srand/rand and
8577 delete an unused file.
8580 *) Add support for the the free Netwide assembler (NASM) under Win32,
8581 since not many people have MASM (ml) and it can be hard to obtain.
8582 This is currently experimental but it seems to work OK and pass all
8583 the tests. Check out INSTALL.W32 for info.
8586 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
8587 without temporary keys kept an extra copy of the server key,
8588 and connections with temporary keys did not free everything in case
8592 *) New function RSA_check_key and new openssl rsa option -check
8593 for verifying the consistency of RSA keys.
8594 [Ulf Moeller, Bodo Moeller]
8596 *) Various changes to make Win32 compile work:
8597 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
8598 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
8599 comparison" warnings.
8600 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
8603 *) Add a debugging option to PKCS#5 v2 key generation function: when
8604 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
8605 derived keys are printed to stderr.
8608 *) Copy the flags in ASN1_STRING_dup().
8609 [Roman E. Pavlov <pre@mo.msk.ru>]
8611 *) The x509 application mishandled signing requests containing DSA
8612 keys when the signing key was also DSA and the parameters didn't match.
8614 It was supposed to omit the parameters when they matched the signing key:
8615 the verifying software was then supposed to automatically use the CA's
8616 parameters if they were absent from the end user certificate.
8618 Omitting parameters is no longer recommended. The test was also
8619 the wrong way round! This was probably due to unusual behaviour in
8620 EVP_cmp_parameters() which returns 1 if the parameters match.
8621 This meant that parameters were omitted when they *didn't* match and
8622 the certificate was useless. Certificates signed with 'ca' didn't have
8624 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
8626 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
8627 The interface is as follows:
8628 Applications can use
8629 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
8630 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
8631 "off" is now the default.
8632 The library internally uses
8633 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
8634 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
8635 to disable memory-checking temporarily.
8637 Some inconsistent states that previously were possible (and were
8638 even the default) are now avoided.
8640 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
8641 with each memory chunk allocated; this is occasionally more helpful
8642 than just having a counter.
8644 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
8646 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
8650 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
8651 which largely parallels "options", but is for changing API behaviour,
8652 whereas "options" are about protocol behaviour.
8653 Initial "mode" flags are:
8655 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
8656 a single record has been written.
8657 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
8658 retries use the same buffer location.
8659 (But all of the contents must be
8663 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
8666 *) Fix problems with no-hmac etc.
8667 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
8669 *) New functions RSA_get_default_method(), RSA_set_method() and
8670 RSA_get_method(). These allows replacement of RSA_METHODs without having
8671 to mess around with the internals of an RSA structure.
8674 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
8675 Also really enable memory leak checks in openssl.c and in some
8677 [Chad C. Mulligan, Bodo Moeller]
8679 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
8680 up the length of negative integers. This has now been simplified to just
8681 store the length when it is first determined and use it later, rather
8682 than trying to keep track of where data is copied and updating it to
8684 [Steve Henson, reported by Brien Wheeler
8685 <bwheeler@authentica-security.com>]
8687 *) Add a new function PKCS7_signatureVerify. This allows the verification
8688 of a PKCS#7 signature but with the signing certificate passed to the
8689 function itself. This contrasts with PKCS7_dataVerify which assumes the
8690 certificate is present in the PKCS#7 structure. This isn't always the
8691 case: certificates can be omitted from a PKCS#7 structure and be
8692 distributed by "out of band" means (such as a certificate database).
8695 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
8696 function prototypes in pem.h, also change util/mkdef.pl to add the
8697 necessary function names.
8700 *) mk1mf.pl (used by Windows builds) did not properly read the
8701 options set by Configure in the top level Makefile, and Configure
8702 was not even able to write more than one option correctly.
8703 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
8706 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
8707 file to be loaded from a BIO or FILE pointer. The BIO version will
8708 for example allow memory BIOs to contain config info.
8711 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
8712 Whoever hopes to achieve shared-library compatibility across versions
8713 must use this, not the compile-time macro.
8714 (Exercise 0.9.4: Which is the minimum library version required by
8716 Note: All this applies only to multi-threaded programs, others don't
8720 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
8721 through a BIO pair triggered the default case, i.e.
8722 SSLerr(...,SSL_R_UNKNOWN_STATE).
8725 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
8726 can use the SSL library even if none of the specific BIOs is
8730 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
8731 for the encoded length.
8732 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
8734 *) Add initial documentation of the X509V3 functions.
8737 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
8738 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
8739 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
8740 secure PKCS#8 private key format with a high iteration count.
8743 *) Fix determination of Perl interpreter: A perl or perl5
8744 _directory_ in $PATH was also accepted as the interpreter.
8745 [Ralf S. Engelschall]
8747 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
8748 wrong with it but it was very old and did things like calling
8749 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
8753 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
8754 to use the new extension code.
8757 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
8758 with macros. This should make it easier to change their form, add extra
8759 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
8763 *) Add to configuration table a new entry that can specify an alternative
8764 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
8765 according to Mark Crispin <MRC@Panda.COM>.
8769 *) DES CBC did not update the IV. Weird.
8772 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
8773 Changing the behaviour of the former might break existing programs --
8774 where IV updating is needed, des_ncbc_encrypt can be used.
8777 *) When bntest is run from "make test" it drives bc to check its
8778 calculations, as well as internally checking them. If an internal check
8779 fails, it needs to cause bc to give a non-zero result or make test carries
8780 on without noticing the failure. Fixed.
8783 *) DES library cleanups.
8786 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
8787 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
8788 ciphers. NOTE: although the key derivation function has been verified
8789 against some published test vectors it has not been extensively tested
8790 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
8794 *) Instead of "mkdir -p", which is not fully portable, use new
8795 Perl script "util/mkdir-p.pl".
8798 *) Rewrite the way password based encryption (PBE) is handled. It used to
8799 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
8800 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
8801 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
8802 the 'parameter' field of the AlgorithmIdentifier is passed to the
8803 underlying key generation function so it must do its own ASN1 parsing.
8804 This has also changed the EVP_PBE_CipherInit() function which now has a
8805 'parameter' argument instead of literal salt and iteration count values
8806 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
8809 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
8810 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
8811 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
8812 KEY" because this clashed with PKCS#8 unencrypted string. Since this
8813 value was just used as a "magic string" and not used directly its
8814 value doesn't matter.
8817 *) Introduce some semblance of const correctness to BN. Shame C doesn't
8821 *) "linux-sparc64" configuration (ultrapenguin).
8822 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
8823 "linux-sparc" configuration.
8824 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
8826 *) config now generates no-xxx options for missing ciphers.
8829 *) Support the EBCDIC character set (work in progress).
8830 File ebcdic.c not yet included because it has a different license.
8831 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8833 *) Support BS2000/OSD-POSIX.
8834 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8836 *) Make callbacks for key generation use void * instead of char *.
8839 *) Make S/MIME samples compile (not yet tested).
8842 *) Additional typesafe stacks.
8845 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
8849 Changes between 0.9.3 and 0.9.3a [29 May 1999]
8851 *) New configuration variant "sco5-gcc".
8853 *) Updated some demos.
8854 [Sean O Riordain, Wade Scholine]
8856 *) Add missing BIO_free at exit of pkcs12 application.
8859 *) Fix memory leak in conf.c.
8862 *) Updates for Win32 to assembler version of MD5.
8865 *) Set #! path to perl in apps/der_chop to where we found it
8866 instead of using a fixed path.
8869 *) SHA library changes for irix64-mips4-cc.
8872 *) Improvements for VMS support.
8876 Changes between 0.9.2b and 0.9.3 [24 May 1999]
8878 *) Bignum library bug fix. IRIX 6 passes "make test" now!
8879 This also avoids the problems with SC4.2 and unpatched SC5.
8880 [Andy Polyakov <appro@fy.chalmers.se>]
8882 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
8883 These are required because of the typesafe stack would otherwise break
8884 existing code. If old code used a structure member which used to be STACK
8885 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
8886 sk_num or sk_value it would produce an error because the num, data members
8887 are not present in STACK_OF. Now it just produces a warning. sk_set
8888 replaces the old method of assigning a value to sk_value
8889 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
8890 that does this will no longer work (and should use sk_set instead) but
8891 this could be regarded as a "questionable" behaviour anyway.
8894 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
8895 correctly handle encrypted S/MIME data.
8898 *) Change type of various DES function arguments from des_cblock
8899 (which means, in function argument declarations, pointer to char)
8900 to des_cblock * (meaning pointer to array with 8 char elements),
8901 which allows the compiler to do more typechecking; it was like
8902 that back in SSLeay, but with lots of ugly casts.
8904 Introduce new type const_des_cblock.
8907 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
8908 problems: find RecipientInfo structure that matches recipient certificate
8909 and initialise the ASN1 structures properly based on passed cipher.
8912 *) Belatedly make the BN tests actually check the results.
8915 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
8916 to and from BNs: it was completely broken. New compilation option
8917 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
8918 key elements as negative integers.
8921 *) Reorganize and speed up MD5.
8922 [Andy Polyakov <appro@fy.chalmers.se>]
8925 [Richard Levitte <richard@levitte.org>]
8927 *) New option -out to asn1parse to allow the parsed structure to be
8928 output to a file. This is most useful when combined with the -strparse
8929 option to examine the output of things like OCTET STRINGS.
8932 *) Make SSL library a little more fool-proof by not requiring any longer
8933 that SSL_set_{accept,connect}_state be called before
8934 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
8935 in many applications because usually everything *appeared* to work as
8936 intended anyway -- now it really works as intended).
8939 *) Move openssl.cnf out of lib/.
8942 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
8943 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
8944 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
8945 [Ralf S. Engelschall]
8947 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
8948 handle PKCS#7 enveloped data properly.
8949 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
8951 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
8952 copying pointers. The cert_st handling is changed by this in
8953 various ways (and thus what used to be known as ctx->default_cert
8954 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
8955 any longer when s->cert does not give us what we need).
8956 ssl_cert_instantiate becomes obsolete by this change.
8957 As soon as we've got the new code right (possibly it already is?),
8958 we have solved a couple of bugs of the earlier code where s->cert
8959 was used as if it could not have been shared with other SSL structures.
8961 Note that using the SSL API in certain dirty ways now will result
8962 in different behaviour than observed with earlier library versions:
8963 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
8964 does not influence s as it used to.
8966 In order to clean up things more thoroughly, inside SSL_SESSION
8967 we don't use CERT any longer, but a new structure SESS_CERT
8968 that holds per-session data (if available); currently, this is
8969 the peer's certificate chain and, for clients, the server's certificate
8970 and temporary key. CERT holds only those values that can have
8971 meaningful defaults in an SSL_CTX.
8974 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
8975 from the internal representation. Various PKCS#7 fixes: remove some
8976 evil casts and set the enc_dig_alg field properly based on the signing
8980 *) Allow PKCS#12 password to be set from the command line or the
8981 environment. Let 'ca' get its config file name from the environment
8982 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
8986 *) Allow certificate policies extension to use an IA5STRING for the
8987 organization field. This is contrary to the PKIX definition but
8988 VeriSign uses it and IE5 only recognises this form. Document 'x509'
8992 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
8993 without disallowing inline assembler and the like for non-pedantic builds.
8996 *) Support Borland C++ builder.
8997 [Janez Jere <jj@void.si>, modified by Ulf Möller]
9002 *) SHA-1 cleanups and performance enhancements.
9003 [Andy Polyakov <appro@fy.chalmers.se>]
9005 *) Sparc v8plus assembler for the bignum library.
9006 [Andy Polyakov <appro@fy.chalmers.se>]
9008 *) Accept any -xxx and +xxx compiler options in Configure.
9011 *) Update HPUX configuration.
9014 *) Add missing sk_<type>_unshift() function to safestack.h
9015 [Ralf S. Engelschall]
9017 *) New function SSL_CTX_use_certificate_chain_file that sets the
9018 "extra_cert"s in addition to the certificate. (This makes sense
9019 only for "PEM" format files, as chains as a whole are not
9023 *) Support verify_depth from the SSL API.
9024 x509_vfy.c had what can be considered an off-by-one-error:
9025 Its depth (which was not part of the external interface)
9026 was actually counting the number of certificates in a chain;
9027 now it really counts the depth.
9030 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
9031 instead of X509err, which often resulted in confusing error
9032 messages since the error codes are not globally unique
9033 (e.g. an alleged error in ssl3_accept when a certificate
9034 didn't match the private key).
9036 *) New function SSL_CTX_set_session_id_context that allows to set a default
9037 value (so that you don't need SSL_set_session_id_context for each
9038 connection using the SSL_CTX).
9041 *) OAEP decoding bug fix.
9044 *) Support INSTALL_PREFIX for package builders, as proposed by
9048 *) New Configure options "threads" and "no-threads". For systems
9049 where the proper compiler options are known (currently Solaris
9050 and Linux), "threads" is the default.
9053 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
9056 *) Install various scripts to $(OPENSSLDIR)/misc, not to
9057 $(INSTALLTOP)/bin -- they shouldn't clutter directories
9058 such as /usr/local/bin.
9061 *) "make linux-shared" to build shared libraries.
9062 [Niels Poppe <niels@netbox.org>]
9064 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
9067 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
9068 extension adding in x509 utility.
9071 *) Remove NOPROTO sections and error code comments.
9074 *) Partial rewrite of the DEF file generator to now parse the ANSI
9078 *) New Configure options --prefix=DIR and --openssldir=DIR.
9081 *) Complete rewrite of the error code script(s). It is all now handled
9082 by one script at the top level which handles error code gathering,
9083 header rewriting and C source file generation. It should be much better
9084 than the old method: it now uses a modified version of Ulf's parser to
9085 read the ANSI prototypes in all header files (thus the old K&R definitions
9086 aren't needed for error creation any more) and do a better job of
9087 translating function codes into names. The old 'ASN1 error code imbedded
9088 in a comment' is no longer necessary and it doesn't use .err files which
9089 have now been deleted. Also the error code call doesn't have to appear all
9090 on one line (which resulted in some large lines...).
9093 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
9096 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
9097 0 (which usually indicates a closed connection), but continue reading.
9100 *) Fix some race conditions.
9103 *) Add support for CRL distribution points extension. Add Certificate
9104 Policies and CRL distribution points documentation.
9107 *) Move the autogenerated header file parts to crypto/opensslconf.h.
9110 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
9111 8 of keying material. Merlin has also confirmed interop with this fix
9112 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
9113 [Merlin Hughes <merlin@baltimore.ie>]
9115 *) Fix lots of warnings.
9116 [Richard Levitte <levitte@stacken.kth.se>]
9118 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
9119 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
9120 [Richard Levitte <levitte@stacken.kth.se>]
9122 *) Fix problems with sizeof(long) == 8.
9123 [Andy Polyakov <appro@fy.chalmers.se>]
9125 *) Change functions to ANSI C.
9128 *) Fix typos in error codes.
9129 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
9131 *) Remove defunct assembler files from Configure.
9134 *) SPARC v8 assembler BIGNUM implementation.
9135 [Andy Polyakov <appro@fy.chalmers.se>]
9137 *) Support for Certificate Policies extension: both print and set.
9138 Various additions to support the r2i method this uses.
9141 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
9142 return a const string when you are expecting an allocated buffer.
9145 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
9146 types DirectoryString and DisplayText.
9149 *) Add code to allow r2i extensions to access the configuration database,
9150 add an LHASH database driver and add several ctx helper functions.
9153 *) Fix an evil bug in bn_expand2() which caused various BN functions to
9154 fail when they extended the size of a BIGNUM.
9157 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
9158 support typesafe stack.
9161 *) Fix typo in SSL_[gs]et_options().
9162 [Nils Frostberg <nils@medcom.se>]
9164 *) Delete various functions and files that belonged to the (now obsolete)
9165 old X509V3 handling code.
9168 *) New Configure option "rsaref".
9171 *) Don't auto-generate pem.h.
9174 *) Introduce type-safe ASN.1 SETs.
9177 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
9178 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
9180 *) Introduce type-safe STACKs. This will almost certainly break lots of code
9181 that links with OpenSSL (well at least cause lots of warnings), but fear
9182 not: the conversion is trivial, and it eliminates loads of evil casts. A
9183 few STACKed things have been converted already. Feel free to convert more.
9184 In the fullness of time, I'll do away with the STACK type altogether.
9187 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
9188 specified in <certfile> by updating the entry in the index.txt file.
9189 This way one no longer has to edit the index.txt file manually for
9190 revoking a certificate. The -revoke option does the gory details now.
9191 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
9193 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
9194 `-text' option at all and this way the `-noout -text' combination was
9195 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
9196 [Ralf S. Engelschall]
9198 *) Make sure a corresponding plain text error message exists for the
9199 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
9200 verify callback function determined that a certificate was revoked.
9201 [Ralf S. Engelschall]
9203 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
9204 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
9205 all available cipers including rc5, which was forgotten until now.
9206 In order to let the testing shell script know which algorithms
9207 are available, a new (up to now undocumented) command
9208 "openssl list-cipher-commands" is used.
9211 *) Bugfix: s_client occasionally would sleep in select() when
9212 it should have checked SSL_pending() first.
9215 *) New functions DSA_do_sign and DSA_do_verify to provide access to
9216 the raw DSA values prior to ASN.1 encoding.
9219 *) Tweaks to Configure
9220 [Niels Poppe <niels@netbox.org>]
9222 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
9226 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
9229 *) New config option to avoid instructions that are illegal on the 80386.
9230 The default code is faster, but requires at least a 486.
9233 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
9234 SSL2_SERVER_VERSION (not used at all) macros, which are now the
9235 same as SSL2_VERSION anyway.
9238 *) New "-showcerts" option for s_client.
9241 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
9242 application. Various cleanups and fixes.
9245 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
9246 modify error routines to work internally. Add error codes and PBE init
9247 to library startup routines.
9250 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
9251 packing functions to asn1 and evp. Changed function names and error
9252 codes along the way.
9255 *) PKCS12 integration: and so it begins... First of several patches to
9256 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
9257 objects to objects.h
9260 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
9261 and display support for Thawte strong extranet extension.
9264 *) Add LinuxPPC support.
9265 [Jeff Dubrule <igor@pobox.org>]
9267 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
9268 bn_div_words in alpha.s.
9269 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
9271 *) Make sure the RSA OAEP test is skipped under -DRSAref because
9272 OAEP isn't supported when OpenSSL is built with RSAref.
9273 [Ulf Moeller <ulf@fitug.de>]
9275 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
9276 so they no longer are missing under -DNOPROTO.
9277 [Soren S. Jorvang <soren@t.dk>]
9280 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
9282 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
9283 doesn't work when the session is reused. Coming soon!
9286 *) Fix a security hole, that allows sessions to be reused in the wrong
9287 context thus bypassing client cert protection! All software that uses
9288 client certs and session caches in multiple contexts NEEDS PATCHING to
9289 allow session reuse! A fuller solution is in the works.
9290 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
9292 *) Some more source tree cleanups (removed obsolete files
9293 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
9294 permission on "config" script to be executable) and a fix for the INSTALL
9296 [Ulf Moeller <ulf@fitug.de>]
9298 *) Remove some legacy and erroneous uses of malloc, free instead of
9300 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
9302 *) Make rsa_oaep_test return non-zero on error.
9303 [Ulf Moeller <ulf@fitug.de>]
9305 *) Add support for native Solaris shared libraries. Configure
9306 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
9307 if someone would make that last step automatic.
9308 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
9310 *) ctx_size was not built with the right compiler during "make links". Fixed.
9313 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
9314 except NULL ciphers". This means the default cipher list will no longer
9315 enable NULL ciphers. They need to be specifically enabled e.g. with
9316 the string "DEFAULT:eNULL".
9319 *) Fix to RSA private encryption routines: if p < q then it would
9320 occasionally produce an invalid result. This will only happen with
9321 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
9324 *) Be less restrictive and allow also `perl util/perlpath.pl
9325 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
9326 because this way one can also use an interpreter named `perl5' (which is
9327 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
9328 installed as `perl').
9329 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9331 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
9332 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9334 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
9335 advapi32.lib to Win32 build and change the pem test comparision
9336 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
9337 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
9338 and crypto/des/ede_cbcm_enc.c.
9341 *) DES quad checksum was broken on big-endian architectures. Fixed.
9344 *) Comment out two functions in bio.h that aren't implemented. Fix up the
9345 Win32 test batch file so it (might) work again. The Win32 test batch file
9346 is horrible: I feel ill....
9349 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
9350 in e_os.h. Audit of header files to check ANSI and non ANSI
9351 sections: 10 functions were absent from non ANSI section and not exported
9352 from Windows DLLs. Fixed up libeay.num for new functions.
9355 *) Make `openssl version' output lines consistent.
9356 [Ralf S. Engelschall]
9358 *) Fix Win32 symbol export lists for BIO functions: Added
9359 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
9360 to ms/libeay{16,32}.def.
9361 [Ralf S. Engelschall]
9363 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
9364 fine under Unix and passes some trivial tests I've now added. But the
9365 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
9366 added to make sure no one expects that this stuff really works in the
9367 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
9368 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
9370 [Ralf S. Engelschall]
9372 *) Fix the generation of two part addresses in perl.
9373 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
9375 *) Add config entry for Linux on MIPS.
9376 [John Tobey <jtobey@channel1.com>]
9378 *) Make links whenever Configure is run, unless we are on Windoze.
9381 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
9382 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
9386 *) Add a useful kludge to allow package maintainers to specify compiler and
9387 other platforms details on the command line without having to patch the
9388 Configure script everytime: One now can use ``perl Configure
9389 <id>:<details>'', i.e. platform ids are allowed to have details appended
9390 to them (seperated by colons). This is treated as there would be a static
9391 pre-configured entry in Configure's %table under key <id> with value
9392 <details> and ``perl Configure <id>'' is called. So, when you want to
9393 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
9394 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
9395 now, which overrides the FreeBSD-elf entry on-the-fly.
9396 [Ralf S. Engelschall]
9398 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
9401 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
9402 on the `perl Configure ...' command line. This way one can compile
9403 OpenSSL libraries with Position Independent Code (PIC) which is needed
9404 for linking it into DSOs.
9405 [Ralf S. Engelschall]
9407 *) Remarkably, export ciphers were totally broken and no-one had noticed!
9411 *) Cleaned up the LICENSE document: The official contact for any license
9412 questions now is the OpenSSL core team under openssl-core@openssl.org.
9413 And add a paragraph about the dual-license situation to make sure people
9414 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
9415 to the OpenSSL toolkit.
9416 [Ralf S. Engelschall]
9418 *) General source tree makefile cleanups: Made `making xxx in yyy...'
9419 display consistent in the source tree and replaced `/bin/rm' by `rm'.
9420 Additonally cleaned up the `make links' target: Remove unnecessary
9421 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
9422 to speed processing and no longer clutter the display with confusing
9423 stuff. Instead only the actually done links are displayed.
9424 [Ralf S. Engelschall]
9426 *) Permit null encryption ciphersuites, used for authentication only. It used
9427 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
9428 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
9432 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
9433 signed attributes when verifying signatures (this would break them),
9434 the detached data encoding was wrong and public keys obtained using
9435 X509_get_pubkey() weren't freed.
9438 *) Add text documentation for the BUFFER functions. Also added a work around
9439 to a Win95 console bug. This was triggered by the password read stuff: the
9440 last character typed gets carried over to the next fread(). If you were
9441 generating a new cert request using 'req' for example then the last
9442 character of the passphrase would be CR which would then enter the first
9446 *) Added the new `Includes OpenSSL Cryptography Software' button as
9447 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
9448 button and can be used by applications based on OpenSSL to show the
9449 relationship to the OpenSSL project.
9450 [Ralf S. Engelschall]
9452 *) Remove confusing variables in function signatures in files
9453 ssl/ssl_lib.c and ssl/ssl.h.
9454 [Lennart Bong <lob@kulthea.stacken.kth.se>]
9456 *) Don't install bss_file.c under PREFIX/include/
9457 [Lennart Bong <lob@kulthea.stacken.kth.se>]
9459 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
9460 functions that return function pointers and has support for NT specific
9461 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
9462 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
9463 unsigned to signed types: this was killing the Win32 compile.
9466 *) Add new certificate file to stack functions,
9467 SSL_add_dir_cert_subjects_to_stack() and
9468 SSL_add_file_cert_subjects_to_stack(). These largely supplant
9469 SSL_load_client_CA_file(), and can be used to add multiple certs easily
9470 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
9471 This means that Apache-SSL and similar packages don't have to mess around
9472 to add as many CAs as they want to the preferred list.
9475 *) Experiment with doxygen documentation. Currently only partially applied to
9477 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
9478 openssl.doxy as the configuration file.
9481 *) Get rid of remaining C++-style comments which strict C compilers hate.
9482 [Ralf S. Engelschall, pointed out by Carlos Amengual]
9484 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
9485 compiled in by default: it has problems with large keys.
9488 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
9489 DH private keys and/or callback functions which directly correspond to
9490 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
9491 is needed for applications which have to configure certificates on a
9492 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
9494 For the RSA certificate situation is makes no difference, but
9495 for the DSA certificate situation this fixes the "no shared cipher"
9496 problem where the OpenSSL cipher selection procedure failed because the
9497 temporary keys were not overtaken from the context and the API provided
9498 no way to reconfigure them.
9499 The new functions now let applications reconfigure the stuff and they
9500 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
9501 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
9502 non-public-API function ssl_cert_instantiate() is used as a helper
9503 function and also to reduce code redundancy inside ssl_rsa.c.
9504 [Ralf S. Engelschall]
9506 *) Move s_server -dcert and -dkey options out of the undocumented feature
9507 area because they are useful for the DSA situation and should be
9508 recognized by the users.
9509 [Ralf S. Engelschall]
9511 *) Fix the cipher decision scheme for export ciphers: the export bits are
9512 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
9513 SSL_EXP_MASK. So, the original variable has to be used instead of the
9514 already masked variable.
9515 [Richard Levitte <levitte@stacken.kth.se>]
9517 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
9518 [Richard Levitte <levitte@stacken.kth.se>]
9520 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
9521 from `int' to `unsigned int' because it's a length and initialized by
9522 EVP_DigestFinal() which expects an `unsigned int *'.
9523 [Richard Levitte <levitte@stacken.kth.se>]
9525 *) Don't hard-code path to Perl interpreter on shebang line of Configure
9526 script. Instead use the usual Shell->Perl transition trick.
9527 [Ralf S. Engelschall]
9529 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
9530 (in addition to RSA certificates) to match the behaviour of `openssl dsa
9531 -noout -modulus' as it's already the case for `openssl rsa -noout
9532 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
9533 currently the public key is printed (a decision which was already done by
9534 `openssl dsa -modulus' in the past) which serves a similar purpose.
9535 Additionally the NO_RSA no longer completely removes the whole -modulus
9536 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
9538 [Ralf S. Engelschall]
9540 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
9541 BIO. See the source (crypto/evp/bio_ok.c) for more info.
9542 [Arne Ansper <arne@ats.cyber.ee>]
9544 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
9545 to be added. Now both 'req' and 'ca' can use new objects defined in the
9549 *) Add cool BIO that does syslog (or event log on NT).
9550 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
9552 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
9553 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
9554 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
9555 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
9558 *) Add preliminary config info for new extension code.
9561 *) Make RSA_NO_PADDING really use no padding.
9562 [Ulf Moeller <ulf@fitug.de>]
9564 *) Generate errors when private/public key check is done.
9567 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
9568 for some CRL extensions and new objects added.
9571 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
9572 key usage extension and fuller support for authority key id.
9575 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
9576 padding method for RSA, which is recommended for new applications in PKCS
9577 #1 v2.0 (RFC 2437, October 1998).
9578 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
9579 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
9580 against Bleichbacher's attack on RSA.
9581 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
9584 *) Updates to the new SSL compression code
9585 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9587 *) Fix so that the version number in the master secret, when passed
9588 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
9589 (because the server will not accept higher), that the version number
9590 is 0x03,0x01, not 0x03,0x00
9591 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9593 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
9594 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
9595 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
9598 *) Support for RAW extensions where an arbitrary extension can be
9599 created by including its DER encoding. See apps/openssl.cnf for
9603 *) Make sure latest Perl versions don't interpret some generated C array
9604 code as Perl array code in the crypto/err/err_genc.pl script.
9605 [Lars Weber <3weber@informatik.uni-hamburg.de>]
9607 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
9608 not many people have the assembler. Various Win32 compilation fixes and
9609 update to the INSTALL.W32 file with (hopefully) more accurate Win32
9613 *) Modify configure script 'Configure' to automatically create crypto/date.h
9614 file under Win32 and also build pem.h from pem.org. New script
9615 util/mkfiles.pl to create the MINFO file on environments that can't do a
9616 'make files': perl util/mkfiles.pl >MINFO should work.
9619 *) Major rework of DES function declarations, in the pursuit of correctness
9620 and purity. As a result, many evil casts evaporated, and some weirdness,
9621 too. You may find this causes warnings in your code. Zapping your evil
9622 casts will probably fix them. Mostly.
9625 *) Fix for a typo in asn1.h. Bug fix to object creation script
9626 obj_dat.pl. It considered a zero in an object definition to mean
9627 "end of object": none of the objects in objects.h have any zeros
9628 so it wasn't spotted.
9629 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
9631 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
9632 Masking (CBCM). In the absence of test vectors, the best I have been able
9633 to do is check that the decrypt undoes the encrypt, so far. Send me test
9634 vectors if you have them.
9637 *) Correct calculation of key length for export ciphers (too much space was
9638 allocated for null ciphers). This has not been tested!
9641 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
9642 message is now correct (it understands "crypto" and "ssl" on its
9643 command line). There is also now an "update" option. This will update
9644 the util/ssleay.num and util/libeay.num files with any new functions.
9646 perl util/mkdef.pl crypto ssl update
9647 it will update them.
9650 *) Overhauled the Perl interface (perl/*):
9651 - ported BN stuff to OpenSSL's different BN library
9652 - made the perl/ source tree CVS-aware
9653 - renamed the package from SSLeay to OpenSSL (the files still contain
9654 their history because I've copied them in the repository)
9655 - removed obsolete files (the test scripts will be replaced
9656 by better Test::Harness variants in the future)
9657 [Ralf S. Engelschall]
9659 *) First cut for a very conservative source tree cleanup:
9660 1. merge various obsolete readme texts into doc/ssleay.txt
9661 where we collect the old documents and readme texts.
9662 2. remove the first part of files where I'm already sure that we no
9663 longer need them because of three reasons: either they are just temporary
9664 files which were left by Eric or they are preserved original files where
9665 I've verified that the diff is also available in the CVS via "cvs diff
9666 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
9667 the crypto/md/ stuff).
9668 [Ralf S. Engelschall]
9670 *) More extension code. Incomplete support for subject and issuer alt
9671 name, issuer and authority key id. Change the i2v function parameters
9672 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
9673 what that's for :-) Fix to ASN1 macro which messed up
9674 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
9677 *) Preliminary support for ENUMERATED type. This is largely copied from the
9681 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
9682 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9684 *) Make sure `make rehash' target really finds the `openssl' program.
9685 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9687 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
9688 like to hear about it if this slows down other processors.
9691 *) Add CygWin32 platform information to Configure script.
9692 [Alan Batie <batie@aahz.jf.intel.com>]
9694 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
9695 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
9697 *) New program nseq to manipulate netscape certificate sequences
9700 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
9704 *) Fixes to BN code. Previously the default was to define BN_RECURSION
9705 but the BN code had some problems that would cause failures when
9706 doing certificate verification and some other functions.
9707 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9709 *) Add ASN1 and PEM code to support netscape certificate sequences.
9712 *) Add ASN1 and PEM code to support netscape certificate sequences.
9715 *) Add several PKIX and private extended key usage OIDs.
9718 *) Modify the 'ca' program to handle the new extension code. Modify
9719 openssl.cnf for new extension format, add comments.
9722 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
9723 and add a sample to openssl.cnf so req -x509 now adds appropriate
9727 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
9728 error code, add initial support to X509_print() and x509 application.
9731 *) Takes a deep breath and start addding X509 V3 extension support code. Add
9732 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
9733 stuff is currently isolated and isn't even compiled yet.
9736 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
9737 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
9738 Removed the versions check from X509 routines when loading extensions:
9739 this allows certain broken certificates that don't set the version
9740 properly to be processed.
9743 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
9744 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
9745 can still be regenerated with "make depend".
9748 *) Spelling mistake in C version of CAST-128.
9749 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
9751 *) Changes to the error generation code. The perl script err-code.pl
9752 now reads in the old error codes and retains the old numbers, only
9753 adding new ones if necessary. It also only changes the .err files if new
9754 codes are added. The makefiles have been modified to only insert errors
9755 when needed (to avoid needlessly modifying header files). This is done
9756 by only inserting errors if the .err file is newer than the auto generated
9757 C file. To rebuild all the error codes from scratch (the old behaviour)
9758 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
9759 or delete all the .err files.
9762 *) CAST-128 was incorrectly implemented for short keys. The C version has
9763 been fixed, but is untested. The assembler versions are also fixed, but
9764 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
9765 to regenerate it if needed.
9766 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
9767 Hagino <itojun@kame.net>]
9769 *) File was opened incorrectly in randfile.c.
9770 [Ulf Möller <ulf@fitug.de>]
9772 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
9773 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
9774 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
9775 al: it's just almost always a UTCTime. Note this patch adds new error
9776 codes so do a "make errors" if there are problems.
9779 *) Correct Linux 1 recognition in config.
9780 [Ulf Möller <ulf@fitug.de>]
9782 *) Remove pointless MD5 hash when using DSA keys in ca.
9783 [Anonymous <nobody@replay.com>]
9785 *) Generate an error if given an empty string as a cert directory. Also
9786 generate an error if handed NULL (previously returned 0 to indicate an
9787 error, but didn't set one).
9788 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
9790 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
9793 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
9794 parameters. This was causing a warning which killed off the Win32 compile.
9797 *) Remove C++ style comments from crypto/bn/bn_local.h.
9798 [Neil Costigan <neil.costigan@celocom.com>]
9800 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
9801 based on a text string, looking up short and long names and finally
9802 "dot" format. The "dot" format stuff didn't work. Added new function
9803 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
9804 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
9805 OID is not part of the table.
9808 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
9809 X509_LOOKUP_by_alias().
9812 *) Sort openssl functions by name.
9815 *) Get the gendsa program working (hopefully) and add it to app list. Remove
9816 encryption from sample DSA keys (in case anyone is interested the password
9820 *) Make _all_ *_free functions accept a NULL pointer.
9821 [Frans Heymans <fheymans@isaserver.be>]
9823 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
9825 [Anonymous <nobody@replay.com>]
9827 *) s_server should send the CAfile as acceptable CAs, not its own cert.
9828 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
9830 *) Don't blow it for numeric -newkey arguments to apps/req.
9831 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
9833 *) Temp key "for export" tests were wrong in s3_srvr.c.
9834 [Anonymous <nobody@replay.com>]
9836 *) Add prototype for temp key callback functions
9837 SSL_CTX_set_tmp_{rsa,dh}_callback().
9840 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
9841 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
9844 *) X509_name_add_entry() freed the wrong thing after an error.
9845 [Arne Ansper <arne@ats.cyber.ee>]
9847 *) rsa_eay.c would attempt to free a NULL context.
9848 [Arne Ansper <arne@ats.cyber.ee>]
9850 *) BIO_s_socket() had a broken should_retry() on Windoze.
9851 [Arne Ansper <arne@ats.cyber.ee>]
9853 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
9854 [Arne Ansper <arne@ats.cyber.ee>]
9856 *) Make sure the already existing X509_STORE->depth variable is initialized
9857 in X509_STORE_new(), but document the fact that this variable is still
9858 unused in the certificate verification process.
9859 [Ralf S. Engelschall]
9861 *) Fix the various library and apps files to free up pkeys obtained from
9862 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
9865 *) Fix reference counting in X509_PUBKEY_get(). This makes
9866 demos/maurice/example2.c work, amongst others, probably.
9867 [Steve Henson and Ben Laurie]
9869 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
9870 `openssl' and second, the shortcut symlinks for the `openssl <command>'
9871 are no longer created. This way we have a single and consistent command
9872 line interface `openssl <command>', similar to `cvs <command>'.
9873 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
9875 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
9876 BIT STRING wrapper always have zero unused bits.
9879 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
9882 *) Make the top-level INSTALL documentation easier to understand.
9885 *) Makefiles updated to exit if an error occurs in a sub-directory
9886 make (including if user presses ^C) [Paul Sutton]
9888 *) Make Montgomery context stuff explicit in RSA data structure.
9891 *) Fix build order of pem and err to allow for generated pem.h.
9894 *) Fix renumbering bug in X509_NAME_delete_entry().
9897 *) Enhanced the err-ins.pl script so it makes the error library number
9898 global and can add a library name. This is needed for external ASN1 and
9899 other error libraries.
9902 *) Fixed sk_insert which never worked properly.
9905 *) Fix ASN1 macros so they can handle indefinite length construted
9906 EXPLICIT tags. Some non standard certificates use these: they can now
9910 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
9911 into a single doc/ssleay.txt bundle. This way the information is still
9912 preserved but no longer messes up this directory. Now it's new room for
9913 the new set of documenation files.
9914 [Ralf S. Engelschall]
9916 *) SETs were incorrectly DER encoded. This was a major pain, because they
9917 shared code with SEQUENCEs, which aren't coded the same. This means that
9918 almost everything to do with SETs or SEQUENCEs has either changed name or
9919 number of arguments.
9920 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
9922 *) Fix test data to work with the above.
9925 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
9926 was already fixed by Eric for 0.9.1 it seems.
9927 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
9929 *) Autodetect FreeBSD3.
9932 *) Fix various bugs in Configure. This affects the following platforms:
9936 unixware-2.0-pentium
9940 *) Eliminate generated files from CVS. Reorder tests to regenerate files
9941 before they are needed.
9944 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
9948 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
9950 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
9951 changed SSLeay to OpenSSL in version strings.
9952 [Ralf S. Engelschall]
9954 *) Some fixups to the top-level documents.
9957 *) Fixed the nasty bug where rsaref.h was not found under compile-time
9958 because the symlink to include/ was missing.
9959 [Ralf S. Engelschall]
9961 *) Incorporated the popular no-RSA/DSA-only patches
9962 which allow to compile a RSA-free SSLeay.
9963 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
9965 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
9966 when "ssleay" is still not found.
9967 [Ralf S. Engelschall]
9969 *) Added more platforms to Configure: Cray T3E, HPUX 11,
9970 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
9972 *) Updated the README file.
9973 [Ralf S. Engelschall]
9975 *) Added various .cvsignore files in the CVS repository subdirs
9976 to make a "cvs update" really silent.
9977 [Ralf S. Engelschall]
9979 *) Recompiled the error-definition header files and added
9980 missing symbols to the Win32 linker tables.
9981 [Ralf S. Engelschall]
9983 *) Cleaned up the top-level documents;
9984 o new files: CHANGES and LICENSE
9985 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
9986 o merged COPYRIGHT into LICENSE
9987 o removed obsolete TODO file
9988 o renamed MICROSOFT to INSTALL.W32
9989 [Ralf S. Engelschall]
9991 *) Removed dummy files from the 0.9.1b source tree:
9992 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
9993 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
9994 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
9995 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
9996 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
9997 [Ralf S. Engelschall]
9999 *) Added various platform portability fixes.
10002 *) The Genesis of the OpenSSL rpject:
10003 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
10004 Young and Tim J. Hudson created while they were working for C2Net until
10006 [The OpenSSL Project]
10009 Changes between 0.9.0b and 0.9.1b [not released]
10011 *) Updated a few CA certificates under certs/
10014 *) Changed some BIGNUM api stuff.
10017 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
10018 DGUX x86, Linux Alpha, etc.
10021 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
10022 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
10026 *) Add -strparse option to asn1pars program which parses nested
10028 [Dr Stephen Henson <shenson@bigfoot.com>]
10030 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
10033 *) DSA fix for "ca" program.
10036 *) Added "-genkey" option to "dsaparam" program.
10039 *) Added RIPE MD160 (rmd160) message digest.
10042 *) Added -a (all) option to "ssleay version" command.
10045 *) Added PLATFORM define which is the id given to Configure.
10048 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
10051 *) Extended the ASN.1 parser routines.
10054 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
10057 *) Added a BN_CTX to the BN library.
10060 *) Fixed the weak key values in DES library
10063 *) Changed API in EVP library for cipher aliases.
10066 *) Added support for RC2/64bit cipher.
10069 *) Converted the lhash library to the crypto/mem.c functions.
10072 *) Added more recognized ASN.1 object ids.
10075 *) Added more RSA padding checks for SSL/TLS.
10078 *) Added BIO proxy/filter functionality.
10081 *) Added extra_certs to SSL_CTX which can be used
10082 send extra CA certificates to the client in the CA cert chain sending
10083 process. It can be configured with SSL_CTX_add_extra_chain_cert().
10086 *) Now Fortezza is denied in the authentication phase because
10087 this is key exchange mechanism is not supported by SSLeay at all.
10090 *) Additional PKCS1 checks.
10093 *) Support the string "TLSv1" for all TLS v1 ciphers.
10096 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
10097 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
10100 *) Fixed a few memory leaks.
10103 *) Fixed various code and comment typos.
10106 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
10107 bytes sent in the client random.
10108 [Edward Bishop <ebishop@spyglass.com>]
projects / openssl.git / blob