5 Changes between 1.0.1 and 1.0.2 [xx XXX xxxx]
7 *) Add -rev test option to s_server to just reverse order of characters
8 received by client and send back to server. Also prints an abbreviated
9 summary of the connection parameters.
12 *) New option -brief for s_client and s_server to print out a brief summary
13 of connection parameters.
16 *) Add callbacks for arbitrary TLS extensions.
17 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
19 *) New option -crl_download in several openssl utilities to download CRLs
20 from CRLDP extension in certificates.
23 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
26 *) New function X509_CRL_diff to generate a delta CRL from the difference
27 of two full CRLs. Add support to "crl" utility.
30 *) New functions to set lookup_crls function and to retrieve
31 X509_STORE from X509_STORE_CTX.
34 *) Print out deprecated issuer and subject unique ID fields in
38 *) Extend OCSP I/O functions so they can be used for simple general purpose
39 HTTP as well as OCSP. New wrapper function which can be used to download
40 CRLs using the OCSP API.
43 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
46 *) SSL_CONF* functions. These provide a common framework for application
47 configuration using configuration files or command lines.
50 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
51 message callback and prints the results. Needs compile time option
52 "enable-ssl-trace". New options to s_client and s_server to enable
56 *) New ctrl and macro to retrieve supported points extensions.
57 Print out extension in s_server.
60 *) New functions to retrieve certificate signature and signature
64 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
68 *) New Suite B modes for TLS code. These use and enforce the requirements
69 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
70 only use Suite B curves. The Suite B modes can be set by using the
71 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
74 *) New chain verification flags for Suite B levels of security. Check
75 algorithms are acceptable when flags are set in X509_verify_cert.
78 *) Make tls1_check_chain return a set of flags indicating checks passed
79 by a certificate chain. Add additional tests to handle client
80 certificates: checks for matching certificate type and issuer name
84 *) If an attempt is made to use a signature algorithm not in the peer
85 preference list abort the handshake. If client has no suitable
86 signature algorithms in response to a certificate request do not
90 *) If server EC tmp key is not in client preference list abort handshake.
93 *) Add support for certificate stores in CERT structure. This makes it
94 possible to have different stores per SSL structure or one store in
95 the parent SSL_CTX. Include distint stores for certificate chain
96 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
97 to build and store a certificate chain in CERT structure: returing
98 an error if the chain cannot be built: this will allow applications
99 to test if a chain is correctly configured.
101 Note: if the CERT based stores are not set then the parent SSL_CTX
102 store is used to retain compatibility with existing behaviour.
106 *) New function ssl_set_client_disabled to set a ciphersuite disabled
107 mask based on the current session, check mask when sending client
108 hello and checking the requested ciphersuite.
111 *) New ctrls to retrieve and set certificate types in a certificate
112 request message. Print out received values in s_client. If certificate
113 types is not set with custom values set sensible values based on
114 supported signature algorithms.
117 *) Support for distinct client and server supported signature algorithms.
120 *) Add certificate callback. If set this is called whenever a certificate
121 is required by client or server. An application can decide which
122 certificate chain to present based on arbitrary criteria: for example
123 supported signature algorithms. Add very simple example to s_server.
124 This fixes many of the problems and restrictions of the existing client
125 certificate callback: for example you can now clear an existing
126 certificate and specify the whole chain.
129 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
130 the certificate can be used for (if anything). Set valid_flags field
131 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
132 to have similar checks in it.
134 Add new "cert_flags" field to CERT structure and include a "strict mode".
135 This enforces some TLS certificate requirements (such as only permitting
136 certificate signature algorithms contained in the supported algorithms
137 extension) which some implementations ignore: this option should be used
138 with caution as it could cause interoperability issues.
141 *) Update and tidy signature algorithm extension processing. Work out
142 shared signature algorithms based on preferences and peer algorithms
143 and print them out in s_client and s_server. Abort handshake if no
144 shared signature algorithms.
147 *) Add new functions to allow customised supported signature algorithms
148 for SSL and SSL_CTX structures. Add options to s_client and s_server
152 *) New function SSL_certs_clear() to delete all references to certificates
153 from an SSL structure. Before this once a certificate had been added
154 it couldn't be removed.
157 *) Integrate hostname, email address and IP address checking with certificate
158 verification. New verify options supporting checking in opensl utility.
161 *) Fixes and wildcard matching support to hostname and email checking
162 functions. Add manual page.
163 [Florian Weimer (Red Hat Product Security Team)]
165 *) New functions to check a hostname email or IP address against a
166 certificate. Add options x509 utility to print results of checks against
170 *) Fix OCSP checking.
171 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
173 *) Backport support for partial chain verification: if an intermediate
174 certificate is explicitly trusted (using -addtrust option to x509
175 utility for example) the verification is sucessful even if the chain
177 The OCSP checking fix depends on this backport.
178 [Steve Henson and Rob Stradling <rob.stradling@comodo.com>]
180 *) Add -trusted_first option which attempts to find certificates in the
181 trusted store even if an untrusted chain is also supplied.
184 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
185 platform support for Linux and Android.
188 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
189 the right response is stapled. Also change current certificate to
190 the certificate actually sent.
191 See http://rt.openssl.org/Ticket/Display.html?id=2836.
192 [Rob Stradling <rob.stradling@comodo.com>]
194 *) Support for linux-x32, ILP32 environment in x86_64 framework.
198 [Emilia Kasper, Adam Langley, Ben Laurie (Google)]
200 *) Experimental multi-implementation support for FIPS capable OpenSSL.
201 When in FIPS mode the approved implementations are used as normal,
202 when not in FIPS mode the internal unapproved versions are used instead.
203 This means that the FIPS capable OpenSSL isn't forced to use the
204 (often lower perfomance) FIPS implementations outside FIPS mode.
207 *) Transparently support X9.42 DH parameters when calling
208 PEM_read_bio_DHparameters. This means existing applications can handle
209 the new parameter format automatically.
212 *) Initial experimental support for X9.42 DH parameter format: mainly
213 to support use of 'q' parameter for RFC5114 parameters.
216 *) Add DH parameters from RFC5114 including test data to dhtest.
219 *) Support for automatic EC temporary key parameter selection. If enabled
220 the most preferred EC parameters are automatically used instead of
221 hardcoded fixed parameters. Now a server just has to call:
222 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
223 support ECDH and use the most appropriate parameters.
226 *) Enhance and tidy EC curve and point format TLS extension code. Use
227 static structures instead of allocation if default values are used.
228 New ctrls to set curves we wish to support and to retrieve shared curves.
229 Print out shared curves in s_server. New options to s_server and s_client
230 to set list of supported curves.
233 *) New ctrls to retrieve supported signature algorithms and
234 supported curve values as an array of NIDs. Extend openssl utility
235 to print out received values.
238 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
239 between NIDs and the more common NIST names such as "P-256". Enhance
240 ecparam utility and ECC method to recognise the NIST names for curves.
243 *) Enhance SSL/TLS certificate chain handling to support different
244 chains for each certificate instead of one chain in the parent SSL_CTX.
247 *) Support for fixed DH ciphersuite client authentication: where both
248 server and client use DH certificates with common parameters.
251 *) Support for fixed DH ciphersuites: those requiring DH server
255 Changes between 1.0.1c and 1.0.1d [xx XXX xxxx]
257 *) Make openssl verify return errors.
258 [Chris Palmer <palmer@google.com> and Ben Laurie]
260 *) Fix possible deadlock when decoding public keys.
263 *) Don't use TLS 1.0 record version number in initial client hello
267 Changes between 1.0.1b and 1.0.1c [10 May 2012]
269 *) Sanity check record length before skipping explicit IV in TLS
270 1.2, 1.1 and DTLS to avoid DoS attack.
272 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
273 fuzzing as a service testing platform.
277 *) Initialise tkeylen properly when encrypting CMS messages.
278 Thanks to Solar Designer of Openwall for reporting this issue.
281 *) In FIPS mode don't try to use composite ciphers as they are not
285 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
287 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
288 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
289 mean any application compiled against OpenSSL 1.0.0 headers setting
290 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
291 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
292 0x10000000L Any application which was previously compiled against
293 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
294 will need to be recompiled as a result. Letting be results in
295 inability to disable specifically TLS 1.1 and in client context,
296 in unlike event, limit maximum offered version to TLS 1.0 [see below].
299 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
300 disable just protocol X, but all protocols above X *if* there are
301 protocols *below* X still enabled. In more practical terms it means
302 that if application wants to disable TLS1.0 in favor of TLS1.1 and
303 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
304 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
308 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
310 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
311 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
312 in CRYPTO_realloc_clean.
314 Thanks to Tavis Ormandy, Google Security Team, for discovering this
315 issue and to Adam Langley <agl@chromium.org> for fixing it.
317 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
319 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
322 *) Workarounds for some broken servers that "hang" if a client hello
323 record length exceeds 255 bytes:
325 1. Do not use record version number > TLS 1.0 in initial client
326 hello: some (but not all) hanging servers will now work.
327 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
328 the number of ciphers sent in the client hello. This should be
329 set to an even number, such as 50, for example by passing:
330 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
331 Most broken servers should now work.
332 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
333 TLS 1.2 client support entirely.
336 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
339 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
341 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
342 STRING form instead of a DigestInfo.
345 *) The format used for MDC2 RSA signatures is inconsistent between EVP
346 and the RSA_sign/RSA_verify functions. This was made more apparent when
347 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
348 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
349 the correct format in RSA_verify so both forms transparently work.
352 *) Some servers which support TLS 1.0 can choke if we initially indicate
353 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
354 encrypted premaster secret. As a workaround use the maximum pemitted
355 client version in client hello, this should keep such servers happy
356 and still work with previous versions of OpenSSL.
359 *) Add support for TLS/DTLS heartbeats.
360 [Robin Seggelmann <seggelmann@fh-muenster.de>]
362 *) Add support for SCTP.
363 [Robin Seggelmann <seggelmann@fh-muenster.de>]
365 *) Improved PRNG seeding for VOS.
366 [Paul Green <Paul.Green@stratus.com>]
368 *) Extensive assembler packs updates, most notably:
370 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
371 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
372 - x86_64: bit-sliced AES implementation;
373 - ARM: NEON support, contemporary platforms optimizations;
374 - s390x: z196 support;
375 - *: GHASH and GF(2^m) multiplication implementations;
379 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
380 (removal of unnecessary code)
381 [Peter Sylvester <peter.sylvester@edelweb.fr>]
383 *) Add TLS key material exporter from RFC 5705.
386 *) Add DTLS-SRTP negotiation from RFC 5764.
389 *) Add Next Protocol Negotiation,
390 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
391 disabled with a no-npn flag to config or Configure. Code donated
393 [Adam Langley <agl@google.com> and Ben Laurie]
395 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
396 NIST-P256, NIST-P521, with constant-time single point multiplication on
397 typical inputs. Compiler support for the nonstandard type __uint128_t is
398 required to use this (present in gcc 4.4 and later, for 64-bit builds).
399 Code made available under Apache License version 2.0.
401 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
402 line to include this in your build of OpenSSL, and run "make depend" (or
403 "make update"). This enables the following EC_METHODs:
405 EC_GFp_nistp224_method()
406 EC_GFp_nistp256_method()
407 EC_GFp_nistp521_method()
409 EC_GROUP_new_by_curve_name() will automatically use these (while
410 EC_GROUP_new_curve_GFp() currently prefers the more flexible
412 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
414 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
415 all platforms. Move ssize_t definition from e_os.h to the public
416 header file e_os2.h as it now appears in public header file cms.h
419 *) New -sigopt option to the ca, req and x509 utilities. Additional
420 signature parameters can be passed using this option and in
424 *) Add RSA PSS signing function. This will generate and set the
425 appropriate AlgorithmIdentifiers for PSS based on those in the
426 corresponding EVP_MD_CTX structure. No application support yet.
429 *) Support for companion algorithm specific ASN1 signing routines.
430 New function ASN1_item_sign_ctx() signs a pre-initialised
431 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
432 the appropriate parameters.
435 *) Add new algorithm specific ASN1 verification initialisation function
436 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
437 handling will be the same no matter what EVP_PKEY_METHOD is used.
438 Add a PSS handler to support verification of PSS signatures: checked
439 against a number of sample certificates.
442 *) Add signature printing for PSS. Add PSS OIDs.
443 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
445 *) Add algorithm specific signature printing. An individual ASN1 method
446 can now print out signatures instead of the standard hex dump.
448 More complex signatures (e.g. PSS) can print out more meaningful
449 information. Include DSA version that prints out the signature
453 *) Password based recipient info support for CMS library: implementing
457 *) Split password based encryption into PBES2 and PBKDF2 functions. This
458 neatly separates the code into cipher and PBE sections and is required
459 for some algorithms that split PBES2 into separate pieces (such as
463 *) Session-handling fixes:
464 - Fix handling of connections that are resuming with a session ID,
465 but also support Session Tickets.
466 - Fix a bug that suppressed issuing of a new ticket if the client
467 presented a ticket with an expired session.
468 - Try to set the ticket lifetime hint to something reasonable.
469 - Make tickets shorter by excluding irrelevant information.
470 - On the client side, don't ignore renewed tickets.
471 [Adam Langley, Bodo Moeller (Google)]
473 *) Fix PSK session representation.
476 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
478 This work was sponsored by Intel.
481 *) Add GCM support to TLS library. Some custom code is needed to split
482 the IV between the fixed (from PRF) and explicit (from TLS record)
483 portions. This adds all GCM ciphersuites supported by RFC5288 and
484 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
485 add a special AESGCM string for GCM only.
488 *) Expand range of ctrls for AES GCM. Permit setting invocation
489 field on decrypt and retrieval of invocation field only on encrypt.
492 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
493 As required by RFC5289 these ciphersuites cannot be used if for
494 versions of TLS earlier than 1.2.
497 *) For FIPS capable OpenSSL interpret a NULL default public key method
498 as unset and return the appopriate default but do *not* set the default.
499 This means we can return the appopriate method in applications that
500 swicth between FIPS and non-FIPS modes.
503 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
504 ENGINE is used then we cannot handle that in the FIPS module so we
505 keep original code iff non-FIPS operations are allowed.
508 *) Add -attime option to openssl utilities.
509 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
511 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
514 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
515 FIPS EC methods unconditionally for now.
518 *) New build option no-ec2m to disable characteristic 2 code.
521 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
522 all cases can be covered as some introduce binary incompatibilities.
525 *) Redirect RSA operations to FIPS module including keygen,
526 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
529 *) Add similar low level API blocking to ciphers.
532 *) Low level digest APIs are not approved in FIPS mode: any attempt
533 to use these will cause a fatal error. Applications that *really* want
534 to use them can use the private_* version instead.
537 *) Redirect cipher operations to FIPS module for FIPS builds.
540 *) Redirect digest operations to FIPS module for FIPS builds.
543 *) Update build system to add "fips" flag which will link in fipscanister.o
544 for static and shared library builds embedding a signature if needed.
547 *) Output TLS supported curves in preference order instead of numerical
548 order. This is currently hardcoded for the highest order curves first.
549 This should be configurable so applications can judge speed vs strength.
552 *) Add TLS v1.2 server support for client authentication.
555 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
559 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
560 FIPS modules versions.
563 *) Add TLS v1.2 client side support for client authentication. Keep cache
564 of handshake records longer as we don't know the hash algorithm to use
565 until after the certificate request message is received.
568 *) Initial TLS v1.2 client support. Add a default signature algorithms
569 extension including all the algorithms we support. Parse new signature
570 format in client key exchange. Relax some ECC signing restrictions for
571 TLS v1.2 as indicated in RFC5246.
574 *) Add server support for TLS v1.2 signature algorithms extension. Switch
575 to new signature format when needed using client digest preference.
576 All server ciphersuites should now work correctly in TLS v1.2. No client
577 support yet and no support for client certificates.
580 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
581 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
582 ciphersuites. At present only RSA key exchange ciphersuites work with
583 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
584 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
585 and version checking.
588 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
589 with this defined it will not be affected by any changes to ssl internal
590 structures. Add several utility functions to allow openssl application
591 to work with OPENSSL_NO_SSL_INTERN defined.
595 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
597 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
600 *) Permit abbreviated handshakes when renegotiating using the function
601 SSL_renegotiate_abbreviated().
602 [Robin Seggelmann <seggelmann@fh-muenster.de>]
604 *) Add call to ENGINE_register_all_complete() to
605 ENGINE_load_builtin_engines(), so some implementations get used
606 automatically instead of needing explicit application support.
609 *) Add support for TLS key exporter as described in RFC5705.
610 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
612 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
613 a few changes are required:
615 Add SSL_OP_NO_TLSv1_1 flag.
617 Update version checking logic to handle version 1.1.
618 Add explicit IV handling (ported from DTLS code).
619 Add command line options to s_client/s_server.
622 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
624 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
625 in CMS and PKCS7 code. When RSA decryption fails use a random key for
626 content decryption and always return the same error. Note: this attack
627 needs on average 2^20 messages so it only affects automated senders. The
628 old behaviour can be reenabled in the CMS code by setting the
629 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
630 an MMA defence is not necessary.
631 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
632 this issue. (CVE-2012-0884)
635 *) Fix CVE-2011-4619: make sure we really are receiving a
636 client hello before rejecting multiple SGC restarts. Thanks to
637 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
640 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
642 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
643 Thanks to Antonio Martin, Enterprise Secure Access Research and
644 Development, Cisco Systems, Inc. for discovering this bug and
645 preparing a fix. (CVE-2012-0050)
648 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
650 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
651 of the Vaudenay padding oracle attack on CBC mode encryption
652 which enables an efficient plaintext recovery attack against
653 the OpenSSL implementation of DTLS. Their attack exploits timing
654 differences arising during decryption processing. A research
655 paper describing this attack can be found at:
656 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
657 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
658 Security Group at Royal Holloway, University of London
659 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
660 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
661 for preparing the fix. (CVE-2011-4108)
662 [Robin Seggelmann, Michael Tuexen]
664 *) Clear bytes used for block padding of SSL 3.0 records.
666 [Adam Langley (Google)]
668 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
669 Kadianakis <desnacked@gmail.com> for discovering this issue and
670 Adam Langley for preparing the fix. (CVE-2011-4619)
671 [Adam Langley (Google)]
673 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
674 [Andrey Kulikov <amdeich@gmail.com>]
676 *) Prevent malformed RFC3779 data triggering an assertion failure.
677 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
678 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
679 [Rob Austein <sra@hactrn.net>]
681 *) Improved PRNG seeding for VOS.
682 [Paul Green <Paul.Green@stratus.com>]
684 *) Fix ssl_ciph.c set-up race.
685 [Adam Langley (Google)]
687 *) Fix spurious failures in ecdsatest.c.
688 [Emilia Käsper (Google)]
690 *) Fix the BIO_f_buffer() implementation (which was mixing different
691 interpretations of the '..._len' fields).
692 [Adam Langley (Google)]
694 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
695 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
696 threads won't reuse the same blinding coefficients.
698 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
699 lock to call BN_BLINDING_invert_ex, and avoids one use of
700 BN_BLINDING_update for each BN_BLINDING structure (previously,
701 the last update always remained unused).
702 [Emilia Käsper (Google)]
704 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
705 [Bob Buckholz (Google)]
707 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
709 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
710 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
711 [Kaspar Brand <ossl@velox.ch>]
713 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
714 for multi-threaded use of ECDH. (CVE-2011-3210)
715 [Adam Langley (Google)]
717 *) Fix x509_name_ex_d2i memory leak on bad inputs.
720 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
721 signature public key algorithm by using OID xref utilities instead.
722 Before this you could only use some ECC ciphersuites with SHA1 only.
725 *) Add protection against ECDSA timing attacks as mentioned in the paper
726 by Billy Bob Brumley and Nicola Tuveri, see:
728 http://eprint.iacr.org/2011/232.pdf
730 [Billy Bob Brumley and Nicola Tuveri]
732 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
734 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
735 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
737 *) Fix bug in string printing code: if *any* escaping is enabled we must
738 escape the escape character (backslash) or the resulting string is
742 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
744 *) Disable code workaround for ancient and obsolete Netscape browsers
745 and servers: an attacker can use it in a ciphersuite downgrade attack.
746 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
749 *) Fixed J-PAKE implementation error, originally discovered by
750 Sebastien Martini, further info and confirmation from Stefan
751 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
754 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
756 *) Fix extension code to avoid race conditions which can result in a buffer
757 overrun vulnerability: resumed sessions must not be modified as they can
758 be shared by multiple threads. CVE-2010-3864
761 *) Fix WIN32 build system to correctly link an ENGINE directory into
765 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
767 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
769 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
771 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
773 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
774 context. The operation can be customised via the ctrl mechanism in
775 case ENGINEs want to include additional functionality.
778 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
781 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
782 output hashes compatible with older versions of OpenSSL.
783 [Willy Weisz <weisz@vcpc.univie.ac.at>]
785 *) Fix compression algorithm handling: if resuming a session use the
786 compression algorithm of the resumed session instead of determining
787 it from client hello again. Don't allow server to change algorithm.
790 *) Add load_crls() function to apps tidying load_certs() too. Add option
791 to verify utility to allow additional CRLs to be included.
794 *) Update OCSP request code to permit adding custom headers to the request:
795 some responders need this.
798 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
800 [Julia Lawall <julia@diku.dk>]
802 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
803 needlessly dereferenced structures, used obsolete functions and
804 didn't handle all updated verify codes correctly.
807 *) Disable MD2 in the default configuration.
810 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
811 indicate the initial BIO being pushed or popped. This makes it possible
812 to determine whether the BIO is the one explicitly called or as a result
813 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
814 it handles reference counts correctly and doesn't zero out the I/O bio
815 when it is not being explicitly popped. WARNING: applications which
816 included workarounds for the old buggy behaviour will need to be modified
817 or they could free up already freed BIOs.
820 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
821 renaming to all platforms (within the 0.9.8 branch, this was
822 done conditionally on Netware platforms to avoid a name clash).
823 [Guenter <lists@gknw.net>]
825 *) Add ECDHE and PSK support to DTLS.
826 [Michael Tuexen <tuexen@fh-muenster.de>]
828 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
832 *) Add "missing" function EVP_MD_flags() (without this the only way to
833 retrieve a digest flags is by accessing the structure directly. Update
834 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
835 or cipher is registered as in the "from" argument. Print out all
836 registered digests in the dgst usage message instead of manually
837 attempting to work them out.
840 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
841 this allows the use of compression and extensions. Change default cipher
842 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
843 by default unless an application cipher string requests it.
846 *) Alter match criteria in PKCS12_parse(). It used to try to use local
847 key ids to find matching certificates and keys but some PKCS#12 files
848 don't follow the (somewhat unwritten) rules and this strategy fails.
849 Now just gather all certificates together and the first private key
850 then look for the first certificate that matches the key.
853 *) Support use of registered digest and cipher names for dgst and cipher
854 commands instead of having to add each one as a special case. So now
861 openssl dgst -sha256 foo
863 and this works for ENGINE based algorithms too.
867 *) Update Gost ENGINE to support parameter files.
868 [Victor B. Wagner <vitus@cryptocom.ru>]
870 *) Support GeneralizedTime in ca utility.
871 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
873 *) Enhance the hash format used for certificate directory links. The new
874 form uses the canonical encoding (meaning equivalent names will work
875 even if they aren't identical) and uses SHA1 instead of MD5. This form
876 is incompatible with the older format and as a result c_rehash should
877 be used to rebuild symbolic links.
880 *) Make PKCS#8 the default write format for private keys, replacing the
881 traditional format. This form is standardised, more secure and doesn't
882 include an implicit MD5 dependency.
885 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
886 committed to OpenSSL should pass this lot as a minimum.
889 *) Add session ticket override functionality for use by EAP-FAST.
890 [Jouni Malinen <j@w1.fi>]
892 *) Modify HMAC functions to return a value. Since these can be implemented
893 in an ENGINE errors can occur.
896 *) Type-checked OBJ_bsearch_ex.
899 *) Type-checked OBJ_bsearch. Also some constification necessitated
900 by type-checking. Still to come: TXT_DB, bsearch(?),
901 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
905 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
906 seconds to a tm structure directly, instead of going through OS
907 specific date routines. This avoids any issues with OS routines such
908 as the year 2038 bug. New *_adj() functions for ASN1 time structures
909 and X509_time_adj_ex() to cover the extended range. The existing
910 X509_time_adj() is still usable and will no longer have any date issues.
913 *) Delta CRL support. New use deltas option which will attempt to locate
914 and search any appropriate delta CRLs available.
916 This work was sponsored by Google.
919 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
920 code and add additional score elements. Validate alternate CRL paths
921 as part of the CRL checking and indicate a new error "CRL path validation
922 error" in this case. Applications wanting additional details can use
923 the verify callback and check the new "parent" field. If this is not
924 NULL CRL path validation is taking place. Existing applications wont
925 see this because it requires extended CRL support which is off by
928 This work was sponsored by Google.
931 *) Support for freshest CRL extension.
933 This work was sponsored by Google.
936 *) Initial indirect CRL support. Currently only supported in the CRLs
937 passed directly and not via lookup. Process certificate issuer
938 CRL entry extension and lookup CRL entries by bother issuer name
939 and serial number. Check and process CRL issuer entry in IDP extension.
941 This work was sponsored by Google.
944 *) Add support for distinct certificate and CRL paths. The CRL issuer
945 certificate is validated separately in this case. Only enabled if
946 an extended CRL support flag is set: this flag will enable additional
947 CRL functionality in future.
949 This work was sponsored by Google.
952 *) Add support for policy mappings extension.
954 This work was sponsored by Google.
957 *) Fixes to pathlength constraint, self issued certificate handling,
958 policy processing to align with RFC3280 and PKITS tests.
960 This work was sponsored by Google.
963 *) Support for name constraints certificate extension. DN, email, DNS
964 and URI types are currently supported.
966 This work was sponsored by Google.
969 *) To cater for systems that provide a pointer-based thread ID rather
970 than numeric, deprecate the current numeric thread ID mechanism and
971 replace it with a structure and associated callback type. This
972 mechanism allows a numeric "hash" to be extracted from a thread ID in
973 either case, and on platforms where pointers are larger than 'long',
974 mixing is done to help ensure the numeric 'hash' is usable even if it
975 can't be guaranteed unique. The default mechanism is to use "&errno"
976 as a pointer-based thread ID to distinguish between threads.
978 Applications that want to provide their own thread IDs should now use
979 CRYPTO_THREADID_set_callback() to register a callback that will call
980 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
982 Note that ERR_remove_state() is now deprecated, because it is tied
983 to the assumption that thread IDs are numeric. ERR_remove_state(0)
984 to free the current thread's error state should be replaced by
985 ERR_remove_thread_state(NULL).
987 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
988 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
989 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
990 application was previously providing a numeric thread callback that
991 was inappropriate for distinguishing threads, then uniqueness might
992 have been obtained with &errno that happened immediately in the
993 intermediate development versions of OpenSSL; this is no longer the
994 case, the numeric thread callback will now override the automatic use
996 [Geoff Thorpe, with help from Bodo Moeller]
998 *) Initial support for different CRL issuing certificates. This covers a
999 simple case where the self issued certificates in the chain exist and
1000 the real CRL issuer is higher in the existing chain.
1002 This work was sponsored by Google.
1005 *) Removed effectively defunct crypto/store from the build.
1008 *) Revamp of STACK to provide stronger type-checking. Still to come:
1009 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
1010 ASN1_STRING, CONF_VALUE.
1013 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
1014 RAM on SSL connections. This option can save about 34k per idle SSL.
1017 *) Revamp of LHASH to provide stronger type-checking. Still to come:
1018 STACK, TXT_DB, bsearch, qsort.
1021 *) Initial support for Cryptographic Message Syntax (aka CMS) based
1022 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
1023 support for data, signedData, compressedData, digestedData and
1024 encryptedData, envelopedData types included. Scripts to check against
1025 RFC4134 examples draft and interop and consistency checks of many
1026 content types and variants.
1029 *) Add options to enc utility to support use of zlib compression BIO.
1032 *) Extend mk1mf to support importing of options and assembly language
1033 files from Configure script, currently only included in VC-WIN32.
1034 The assembly language rules can now optionally generate the source
1035 files from the associated perl scripts.
1038 *) Implement remaining functionality needed to support GOST ciphersuites.
1039 Interop testing has been performed using CryptoPro implementations.
1040 [Victor B. Wagner <vitus@cryptocom.ru>]
1042 *) s390x assembler pack.
1045 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
1049 *) Implement Opaque PRF Input TLS extension as specified in
1050 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
1051 official specification yet and no extension type assignment by
1052 IANA exists, this extension (for now) will have to be explicitly
1053 enabled when building OpenSSL by providing the extension number
1054 to use. For example, specify an option
1056 -DTLSEXT_TYPE_opaque_prf_input=0x9527
1058 to the "config" or "Configure" script to enable the extension,
1059 assuming extension number 0x9527 (which is a completely arbitrary
1060 and unofficial assignment based on the MD5 hash of the Internet
1061 Draft). Note that by doing so, you potentially lose
1062 interoperability with other TLS implementations since these might
1063 be using the same extension number for other purposes.
1065 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
1066 opaque PRF input value to use in the handshake. This will create
1067 an interal copy of the length-'len' string at 'src', and will
1068 return non-zero for success.
1070 To get more control and flexibility, provide a callback function
1073 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
1074 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
1078 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
1081 Callback function 'cb' will be called in handshakes, and is
1082 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
1083 Argument 'arg' is for application purposes (the value as given to
1084 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
1085 be provided to the callback function). The callback function
1086 has to return non-zero to report success: usually 1 to use opaque
1087 PRF input just if possible, or 2 to enforce use of the opaque PRF
1088 input. In the latter case, the library will abort the handshake
1089 if opaque PRF input is not successfully negotiated.
1091 Arguments 'peerinput' and 'len' given to the callback function
1092 will always be NULL and 0 in the case of a client. A server will
1093 see the client's opaque PRF input through these variables if
1094 available (NULL and 0 otherwise). Note that if the server
1095 provides an opaque PRF input, the length must be the same as the
1096 length of the client's opaque PRF input.
1098 Note that the callback function will only be called when creating
1099 a new session (session resumption can resume whatever was
1100 previously negotiated), and will not be called in SSL 2.0
1101 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
1102 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
1103 for applications that need to enforce opaque PRF input.
1107 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1110 [Victor B. Wagner <vitus@cryptocom.ru>]
1112 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1113 RFC4507bis. The encrypted ticket format is an encrypted encoded
1114 SSL_SESSION structure, that way new session features are automatically
1117 If a client application caches session in an SSL_SESSION structure
1118 support is transparent because tickets are now stored in the encoded
1121 The SSL_CTX structure automatically generates keys for ticket
1122 protection in servers so again support should be possible
1123 with no application modification.
1125 If a client or server wishes to disable RFC4507 support then the option
1126 SSL_OP_NO_TICKET can be set.
1128 Add a TLS extension debugging callback to allow the contents of any client
1129 or server extensions to be examined.
1131 This work was sponsored by Google.
1134 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1135 OpenSSL should now compile cleanly on gcc 4.2
1136 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1138 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1139 support including streaming MAC support: this is required for GOST
1140 ciphersuite support.
1141 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1143 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1144 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1145 to output in BER and PEM format.
1148 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1149 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1150 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1151 ENGINE support for HMAC keys which are unextractable. New -mac and
1152 -macopt options to dgst utility.
1155 *) New option -sigopt to dgst utility. Update dgst to use
1156 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1157 alternative signing paramaters such as X9.31 or PSS in the dgst
1161 *) Change ssl_cipher_apply_rule(), the internal function that does
1162 the work each time a ciphersuite string requests enabling
1163 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1164 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1165 the order of disabled ciphersuites such that those ciphersuites
1166 that most recently went from enabled to disabled not only stay
1167 in order with respect to each other, but also have higher priority
1168 than other disabled ciphersuites the next time ciphersuites are
1171 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1172 the same ciphersuites as with "HIGH" alone, but in a specific
1173 order where the PSK ciphersuites come first (since they are the
1174 most recently disabled ciphersuites when "HIGH" is parsed).
1176 Also, change ssl_create_cipher_list() (using this new
1177 funcionality) such that between otherwise identical
1178 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1182 *) Change ssl_create_cipher_list() so that it automatically
1183 arranges the ciphersuites in reasonable order before starting
1184 to process the rule string. Thus, the definition for "DEFAULT"
1185 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1186 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1187 This makes it much easier to arrive at a reasonable default order
1188 in applications for which anonymous ciphers are OK (meaning
1189 that you can't actually use DEFAULT).
1190 [Bodo Moeller; suggested by Victor Duchovni]
1192 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1193 processing) into multiple integers instead of setting
1194 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1195 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1196 (These masks as well as the individual bit definitions are hidden
1197 away into the non-exported interface ssl/ssl_locl.h, so this
1198 change to the definition of the SSL_CIPHER structure shouldn't
1199 affect applications.) This give us more bits for each of these
1200 categories, so there is no longer a need to coagulate AES128 and
1201 AES256 into a single algorithm bit, and to coagulate Camellia128
1202 and Camellia256 into a single algorithm bit, which has led to all
1205 Thus, among other things, the kludge introduced in 0.9.7m and
1206 0.9.8e for masking out AES256 independently of AES128 or masking
1207 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1209 With the change, we also introduce new ciphersuite aliases that
1210 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1214 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1215 Use the leftmost N bytes of the signature input if the input is
1216 larger than the prime q (with N being the size in bytes of q).
1219 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1220 it yet and it is largely untested.
1223 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1226 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1227 some compilers (gcc 4.2 and later) reject their use. Safestack is
1228 reimplemented. Update ASN1 to avoid use of legacy functions.
1231 *) Win32/64 targets are linked with Winsock2.
1234 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1235 to external functions. This can be used to increase CRL handling
1236 efficiency especially when CRLs are very large by (for example) storing
1237 the CRL revoked certificates in a database.
1240 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1241 new CRLs added to a directory can be used. New command line option
1242 -verify_return_error to s_client and s_server. This causes real errors
1243 to be returned by the verify callback instead of carrying on no matter
1244 what. This reflects the way a "real world" verify callback would behave.
1247 *) GOST engine, supporting several GOST algorithms and public key formats.
1248 Kindly donated by Cryptocom.
1251 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1252 partitioned by DP are handled but no indirect CRL or reason partitioning
1253 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1254 selected via a scoring technique which handles IDP and AKID in CRLs.
1257 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1258 will ultimately be used for all verify operations: this will remove the
1259 X509_STORE dependency on certificate verification and allow alternative
1260 lookup methods. X509_STORE based implementations of these two callbacks.
1263 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1264 Modify get_crl() to find a valid (unexpired) CRL if possible.
1267 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1268 this would be called X509_CRL_cmp() but that name is already used by
1269 a function that just compares CRL issuer names. Cache several CRL
1270 extensions in X509_CRL structure and cache CRLDP in X509.
1273 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1274 this maps equivalent X509_NAME structures into a consistent structure.
1275 Name comparison can then be performed rapidly using memcmp().
1278 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1282 *) Allow digests to supply their own micalg string for S/MIME type using
1283 the ctrl EVP_MD_CTRL_MICALG.
1286 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1287 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1288 ctrl. It can then customise the structure before and/or after signing
1292 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1293 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1294 to free up any added signature OIDs.
1297 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1298 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1299 digest and cipher tables. New options added to openssl utility:
1300 list-message-digest-algorithms and list-cipher-algorithms.
1303 *) Change the array representation of binary polynomials: the list
1304 of degrees of non-zero coefficients is now terminated with -1.
1305 Previously it was terminated with 0, which was also part of the
1306 value; thus, the array representation was not applicable to
1307 polynomials where t^0 has coefficient zero. This change makes
1308 the array representation useful in a more general context.
1311 *) Various modifications and fixes to SSL/TLS cipher string
1312 handling. For ECC, the code now distinguishes between fixed ECDH
1313 with RSA certificates on the one hand and with ECDSA certificates
1314 on the other hand, since these are separate ciphersuites. The
1315 unused code for Fortezza ciphersuites has been removed.
1317 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1318 (not "ECDHE"). For consistency with the code for DH
1319 certificates, use of ECDH certificates is now considered ECDH
1320 authentication, not RSA or ECDSA authentication (the latter is
1321 merely the CA's signing algorithm and not actively used in the
1324 The temporary ciphersuite alias "ECCdraft" is no longer
1325 available, and ECC ciphersuites are no longer excluded from "ALL"
1326 and "DEFAULT". The following aliases now exist for RFC 4492
1327 ciphersuites, most of these by analogy with the DH case:
1329 kECDHr - ECDH cert, signed with RSA
1330 kECDHe - ECDH cert, signed with ECDSA
1331 kECDH - ECDH cert (signed with either RSA or ECDSA)
1332 kEECDH - ephemeral ECDH
1333 ECDH - ECDH cert or ephemeral ECDH
1339 AECDH - anonymous ECDH
1340 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1344 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1345 Use correct micalg parameters depending on digest(s) in signed message.
1348 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1349 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1352 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1353 an engine to register a method. Add ENGINE lookups for methods and
1354 functional reference processing.
1357 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1358 EVP_{Sign,Verify}* which allow an application to customise the signature
1362 *) New -resign option to smime utility. This adds one or more signers
1363 to an existing PKCS#7 signedData structure. Also -md option to use an
1364 alternative message digest algorithm for signing.
1367 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1368 create PKCS7 structures containing multiple signers. Update smime
1369 application to support multiple signers.
1372 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1376 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1377 Reorganize PBE internals to lookup from a static table using NIDs,
1378 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1379 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1380 PRF which will be automatically used with PBES2.
1383 *) Replace the algorithm specific calls to generate keys in "req" with the
1387 *) Update PKCS#7 enveloped data routines to use new API. This is now
1388 supported by any public key method supporting the encrypt operation. A
1389 ctrl is added to allow the public key algorithm to examine or modify
1390 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1394 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1395 a default digest type to use. In most cases this will be SHA1 but some
1396 algorithms (such as GOST) need to specify an alternative digest. The
1397 return value indicates how strong the prefernce is 1 means optional and
1398 2 is mandatory (that is it is the only supported type). Modify
1399 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1400 use the default md. Update openssl utilities to use the default digest
1401 type for signing if it is not explicitly indicated.
1404 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1405 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1406 signing method from the key type. This effectively removes the link
1407 between digests and public key types.
1410 *) Add an OID cross reference table and utility functions. Its purpose is to
1411 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1412 rsaEncryption. This will allow some of the algorithm specific hackery
1413 needed to use the correct OID to be removed.
1416 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1417 structures for PKCS7_sign(). They are now set up by the relevant public
1421 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1424 *) Add support for key derivation (agreement) in the API, DH method and
1428 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1429 public and private key formats. As a side effect these add additional
1430 command line functionality not previously available: DSA signatures can be
1431 generated and verified using pkeyutl and DH key support and generation in
1436 [Oliver Tappe <zooey@hirschkaefer.de>]
1438 *) New make target "install_html_docs" installs HTML renditions of the
1440 [Oliver Tappe <zooey@hirschkaefer.de>]
1442 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1443 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1444 support key and parameter generation and add initial key generation
1445 functionality for RSA.
1448 *) Add functions for main EVP_PKEY_method operations. The undocumented
1449 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1450 EVP_PKEY_{encrypt,decrypt}_old.
1453 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1454 key API, doesn't do much yet.
1457 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1458 public key algorithms. New option to openssl utility:
1459 "list-public-key-algorithms" to print out info.
1462 *) Implement the Supported Elliptic Curves Extension for
1463 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1466 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1467 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1470 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1471 utilities such as rsa, dsa, dsaparam etc except they process any key
1475 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1476 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1477 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1481 *) Initial support for pluggable public key ASN1.
1482 De-spaghettify the public key ASN1 handling. Move public and private
1483 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1484 algorithm specific handling to a single module within the relevant
1485 algorithm directory. Add functions to allow (near) opaque processing
1486 of public and private key structures.
1489 *) Implement the Supported Point Formats Extension for
1490 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1493 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1494 for the psk identity [hint] and the psk callback functions to the
1495 SSL_SESSION, SSL and SSL_CTX structure.
1498 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1502 SSL_CTX_use_psk_identity_hint
1503 SSL_get_psk_identity_hint
1504 SSL_get_psk_identity
1505 SSL_use_psk_identity_hint
1507 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1509 *) Add RFC 3161 compliant time stamp request creation, response generation
1510 and response verification functionality.
1511 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1513 *) Add initial support for TLS extensions, specifically for the server_name
1514 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1515 have new members for a host name. The SSL data structure has an
1516 additional member SSL_CTX *initial_ctx so that new sessions can be
1517 stored in that context to allow for session resumption, even after the
1518 SSL has been switched to a new SSL_CTX in reaction to a client's
1519 server_name extension.
1521 New functions (subject to change):
1523 SSL_get_servername()
1524 SSL_get_servername_type()
1527 New CTRL codes and macros (subject to change):
1529 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1530 - SSL_CTX_set_tlsext_servername_callback()
1531 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1532 - SSL_CTX_set_tlsext_servername_arg()
1533 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1535 openssl s_client has a new '-servername ...' option.
1537 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1538 '-key2 ...', '-servername_fatal' (subject to change). This allows
1539 testing the HostName extension for a specific single host name ('-cert'
1540 and '-key' remain fallbacks for handshakes without HostName
1541 negotiation). If the unrecogninzed_name alert has to be sent, this by
1542 default is a warning; it becomes fatal with the '-servername_fatal'
1545 [Peter Sylvester, Remy Allais, Christophe Renou]
1547 *) Whirlpool hash implementation is added.
1550 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1551 bn(64,32). Because of instruction set limitations it doesn't have
1552 any negative impact on performance. This was done mostly in order
1553 to make it possible to share assembler modules, such as bn_mul_mont
1554 implementations, between 32- and 64-bit builds without hassle.
1557 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1558 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1562 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1563 dedicated Montgomery multiplication procedure, is introduced.
1564 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1565 "64-bit" performance on certain 32-bit targets.
1568 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1569 in SSL structures. New SSL ctrl to set maximum send fragment size.
1570 Save memory by seeting the I/O buffer sizes dynamically instead of
1571 using the maximum available value.
1574 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1575 in addition to the text details.
1578 *) Very, very preliminary EXPERIMENTAL support for printing of general
1579 ASN1 structures. This currently produces rather ugly output and doesn't
1580 handle several customised structures at all.
1583 *) Integrated support for PVK file format and some related formats such
1584 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1585 these in the 'rsa' and 'dsa' utilities.
1588 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1591 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1592 place for the (very old) "NETSCAPE" format certificates which are now
1593 handled using new ASN1 code equivalents.
1596 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1597 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1598 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1601 *) Modify CRL distribution points extension code to print out previously
1602 unsupported fields. Enhance extension setting code to allow setting of
1606 *) Add print and set support for Issuing Distribution Point CRL extension.
1609 *) Change 'Configure' script to enable Camellia by default.
1612 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
1614 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1615 Thanks to Antonio Martin, Enterprise Secure Access Research and
1616 Development, Cisco Systems, Inc. for discovering this bug and
1617 preparing a fix. (CVE-2012-0050)
1620 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
1622 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1623 of the Vaudenay padding oracle attack on CBC mode encryption
1624 which enables an efficient plaintext recovery attack against
1625 the OpenSSL implementation of DTLS. Their attack exploits timing
1626 differences arising during decryption processing. A research
1627 paper describing this attack can be found at:
1628 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1629 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1630 Security Group at Royal Holloway, University of London
1631 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1632 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1633 for preparing the fix. (CVE-2011-4108)
1634 [Robin Seggelmann, Michael Tuexen]
1636 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
1637 [Ben Laurie, Kasper <ekasper@google.com>]
1639 *) Clear bytes used for block padding of SSL 3.0 records.
1641 [Adam Langley (Google)]
1643 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1644 Kadianakis <desnacked@gmail.com> for discovering this issue and
1645 Adam Langley for preparing the fix. (CVE-2011-4619)
1646 [Adam Langley (Google)]
1648 *) Prevent malformed RFC3779 data triggering an assertion failure.
1649 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1650 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1651 [Rob Austein <sra@hactrn.net>]
1653 *) Fix ssl_ciph.c set-up race.
1654 [Adam Langley (Google)]
1656 *) Fix spurious failures in ecdsatest.c.
1657 [Emilia Käsper (Google)]
1659 *) Fix the BIO_f_buffer() implementation (which was mixing different
1660 interpretations of the '..._len' fields).
1661 [Adam Langley (Google)]
1663 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1664 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1665 threads won't reuse the same blinding coefficients.
1667 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1668 lock to call BN_BLINDING_invert_ex, and avoids one use of
1669 BN_BLINDING_update for each BN_BLINDING structure (previously,
1670 the last update always remained unused).
1671 [Emilia Käsper (Google)]
1673 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1674 for multi-threaded use of ECDH.
1675 [Adam Langley (Google)]
1677 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1680 *) Add protection against ECDSA timing attacks as mentioned in the paper
1681 by Billy Bob Brumley and Nicola Tuveri, see:
1683 http://eprint.iacr.org/2011/232.pdf
1685 [Billy Bob Brumley and Nicola Tuveri]
1687 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1689 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1690 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1692 *) Fix bug in string printing code: if *any* escaping is enabled we must
1693 escape the escape character (backslash) or the resulting string is
1697 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1699 *) Disable code workaround for ancient and obsolete Netscape browsers
1700 and servers: an attacker can use it in a ciphersuite downgrade attack.
1701 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1704 *) Fixed J-PAKE implementation error, originally discovered by
1705 Sebastien Martini, further info and confirmation from Stefan
1706 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1709 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1711 *) Fix extension code to avoid race conditions which can result in a buffer
1712 overrun vulnerability: resumed sessions must not be modified as they can
1713 be shared by multiple threads. CVE-2010-3864
1716 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1719 *) Don't reencode certificate when calculating signature: cache and use
1720 the original encoding instead. This makes signature verification of
1721 some broken encodings work correctly.
1724 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1725 is also one of the inputs.
1726 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1728 *) Don't repeatedly append PBE algorithms to table if they already exist.
1729 Sort table on each new add. This effectively makes the table read only
1730 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1734 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1736 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1739 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1740 access or freeing data twice (CVE-2010-0742)
1741 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1743 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1744 common in certificates and some applications which only call
1745 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1749 Reduce copying into .apps and .test in makevms.com
1750 Don't try to use blank CA certificate in CA.com
1751 Allow use of C files from original directories in maketests.com
1752 [Steven M. Schweda" <sms@antinode.info>]
1754 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1756 *) When rejecting SSL/TLS records due to an incorrect version number, never
1757 update s->server with a new major version number. As of
1758 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1759 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1760 the previous behavior could result in a read attempt at NULL when
1761 receiving specific incorrect SSL/TLS records once record payload
1762 protection is active. (CVE-2010-0740)
1763 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1765 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1766 could be crashed if the relevant tables were not present (e.g. chrooted).
1767 [Tomas Hoger <thoger@redhat.com>]
1769 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1771 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1772 [Martin Olsson, Neel Mehta]
1774 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1775 accommodate for stack sorting, always a write lock!).
1778 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1779 excessive delays in the RAND_poll(): over a minute. As a workaround
1780 include a time check in the inner Heap32Next loop too.
1783 *) The code that handled flushing of data in SSL/TLS originally used the
1784 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1785 the problem outlined in PR#1949. The fix suggested there however can
1786 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1787 of Apache). So instead simplify the code to flush unconditionally.
1788 This should be fine since flushing with no data to flush is a no op.
1791 *) Handle TLS versions 2.0 and later properly and correctly use the
1792 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1793 off ancient servers have a habit of sticking around for a while...
1796 *) Modify compression code so it frees up structures without using the
1797 ex_data callbacks. This works around a problem where some applications
1798 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1799 restarting) then use compression (e.g. SSL with compression) later.
1800 This results in significant per-connection memory leaks and
1801 has caused some security issues including CVE-2008-1678 and
1805 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1806 change when encrypting or decrypting.
1809 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1810 connect and renegotiate with servers which do not support RI.
1811 Until RI is more widely deployed this option is enabled by default.
1814 *) Add "missing" ssl ctrls to clear options and mode.
1817 *) If client attempts to renegotiate and doesn't support RI respond with
1818 a no_renegotiation alert as required by RFC5746. Some renegotiating
1819 TLS clients will continue a connection gracefully when they receive
1820 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1821 waiting for a server hello which it will never receive. Now we treat a
1822 received no_renegotiation alert as a fatal error. This is because
1823 applications requesting a renegotiation might well expect it to succeed
1824 and would have no code in place to handle the server denying it so the
1825 only safe thing to do is to terminate the connection.
1828 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1829 peer supports secure renegotiation and 0 otherwise. Print out peer
1830 renegotiation support in s_client/s_server.
1833 *) Replace the highly broken and deprecated SPKAC certification method with
1834 the updated NID creation version. This should correctly handle UTF8.
1837 *) Implement RFC5746. Re-enable renegotiation but require the extension
1838 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1839 turns out to be a bad idea. It has been replaced by
1840 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1841 SSL_CTX_set_options(). This is really not recommended unless you
1842 know what you are doing.
1843 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1845 *) Fixes to stateless session resumption handling. Use initial_ctx when
1846 issuing and attempting to decrypt tickets in case it has changed during
1847 servername handling. Use a non-zero length session ID when attempting
1848 stateless session resumption: this makes it possible to determine if
1849 a resumption has occurred immediately after receiving server hello
1850 (several places in OpenSSL subtly assume this) instead of later in
1854 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1855 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1856 fixes for a few places where the return code is not checked
1858 [Julia Lawall <julia@diku.dk>]
1860 *) Add --strict-warnings option to Configure script to include devteam
1861 warnings in other configurations.
1864 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1865 makes it possible to install openssl libraries in locations which
1866 have names other than "lib", for example "/usr/lib64" which some
1868 [Steve Henson, based on patch from Jeremy Utley]
1870 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1871 X690 8.9.12 and can produce some misleading textual output of OIDs.
1872 [Steve Henson, reported by Dan Kaminsky]
1874 *) Delete MD2 from algorithm tables. This follows the recommendation in
1875 several standards that it is not used in new applications due to
1876 several cryptographic weaknesses. For binary compatibility reasons
1877 the MD2 API is still compiled in by default.
1880 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1884 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1885 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1887 [Guenter <lists@gknw.net>]
1889 *) Fix the server certificate chain building code to use X509_verify_cert(),
1890 it used to have an ad-hoc builder which was unable to cope with anything
1891 other than a simple chain.
1892 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1894 *) Don't check self signed certificate signatures in X509_verify_cert()
1895 by default (a flag can override this): it just wastes time without
1896 adding any security. As a useful side effect self signed root CAs
1897 with non-FIPS digests are now usable in FIPS mode.
1900 *) In dtls1_process_out_of_seq_message() the check if the current message
1901 is already buffered was missing. For every new message was memory
1902 allocated, allowing an attacker to perform an denial of service attack
1903 with sending out of seq handshake messages until there is no memory
1904 left. Additionally every future messege was buffered, even if the
1905 sequence number made no sense and would be part of another handshake.
1906 So only messages with sequence numbers less than 10 in advance will be
1907 buffered. (CVE-2009-1378)
1908 [Robin Seggelmann, discovered by Daniel Mentz]
1910 *) Records are buffered if they arrive with a future epoch to be
1911 processed after finishing the corresponding handshake. There is
1912 currently no limitation to this buffer allowing an attacker to perform
1913 a DOS attack with sending records with future epochs until there is no
1914 memory left. This patch adds the pqueue_size() function to detemine
1915 the size of a buffer and limits the record buffer to 100 entries.
1917 [Robin Seggelmann, discovered by Daniel Mentz]
1919 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1920 parent structure is freed. (CVE-2009-1379)
1923 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1924 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1927 [Ilya O. <vrghost@gmail.com>]
1929 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1931 *) Disable renegotiation completely - this fixes a severe security
1932 problem (CVE-2009-3555) at the cost of breaking all
1933 renegotiation. Renegotiation can be re-enabled by setting
1934 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1935 run-time. This is really not recommended unless you know what
1939 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1941 *) Don't set val to NULL when freeing up structures, it is freed up by
1942 underlying code. If sizeof(void *) > sizeof(long) this can result in
1943 zeroing past the valid field. (CVE-2009-0789)
1944 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1946 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1947 checked correctly. This would allow some invalid signed attributes to
1948 appear to verify correctly. (CVE-2009-0591)
1949 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1951 *) Reject UniversalString and BMPString types with invalid lengths. This
1952 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1953 a legal length. (CVE-2009-0590)
1956 *) Set S/MIME signing as the default purpose rather than setting it
1957 unconditionally. This allows applications to override it at the store
1961 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1962 to handle some structures.
1965 *) Improve efficiency of mem_gets: don't search whole buffer each time
1967 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1969 *) New -hex option for openssl rand.
1972 *) Print out UTF8String and NumericString when parsing ASN1.
1975 *) Support NumericString type for name components.
1978 *) Allow CC in the environment to override the automatically chosen
1979 compiler. Note that nothing is done to ensure flags work with the
1983 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1985 *) Properly check EVP_VerifyFinal() and similar return values
1987 [Ben Laurie, Bodo Moeller, Google Security Team]
1989 *) Enable TLS extensions by default.
1992 *) Allow the CHIL engine to be loaded, whether the application is
1993 multithreaded or not. (This does not release the developer from the
1994 obligation to set up the dynamic locking callbacks.)
1995 [Sander Temme <sander@temme.net>]
1997 *) Use correct exit code if there is an error in dgst command.
1998 [Steve Henson; problem pointed out by Roland Dirlewanger]
2000 *) Tweak Configure so that you need to say "experimental-jpake" to enable
2001 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
2004 *) Add experimental JPAKE support, including demo authentication in
2005 s_client and s_server.
2008 *) Set the comparison function in v3_addr_canonize().
2009 [Rob Austein <sra@hactrn.net>]
2011 *) Add support for XMPP STARTTLS in s_client.
2012 [Philip Paeps <philip@freebsd.org>]
2014 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
2015 to ensure that even with this option, only ciphersuites in the
2016 server's preference list will be accepted. (Note that the option
2017 applies only when resuming a session, so the earlier behavior was
2018 just about the algorithm choice for symmetric cryptography.)
2021 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
2023 *) Fix NULL pointer dereference if a DTLS server received
2024 ChangeCipherSpec as first record (CVE-2009-1386).
2027 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
2028 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
2031 *) The fix in 0.9.8c that supposedly got rid of unsafe
2032 double-checked locking was incomplete for RSA blinding,
2033 addressing just one layer of what turns out to have been
2034 doubly unsafe triple-checked locking.
2036 So now fix this for real by retiring the MONT_HELPER macro
2037 in crypto/rsa/rsa_eay.c.
2039 [Bodo Moeller; problem pointed out by Marius Schilder]
2041 *) Various precautionary measures:
2043 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
2045 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
2046 (NB: This would require knowledge of the secret session ticket key
2047 to exploit, in which case you'd be SOL either way.)
2049 - Change bn_nist.c so that it will properly handle input BIGNUMs
2050 outside the expected range.
2052 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
2055 [Neel Mehta, Bodo Moeller]
2057 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
2058 the load fails. Useful for distros.
2059 [Ben Laurie and the FreeBSD team]
2061 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
2064 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
2067 *) Expand ENGINE to support engine supplied SSL client certificate functions.
2069 This work was sponsored by Logica.
2072 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
2073 keystores. Support for SSL/TLS client authentication too.
2074 Not compiled unless enable-capieng specified to Configure.
2076 This work was sponsored by Logica.
2079 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
2080 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
2081 attribute creation routines such as certifcate requests and PKCS#12
2085 Changes between 0.9.8g and 0.9.8h [28 May 2008]
2087 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
2088 handshake which could lead to a cilent crash as found using the
2089 Codenomicon TLS test suite (CVE-2008-1672)
2090 [Steve Henson, Mark Cox]
2092 *) Fix double free in TLS server name extensions which could lead to
2093 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2096 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2098 Clear the error queue to ensure that error entries left from
2099 older function calls do not interfere with the correct operation.
2100 [Lutz Jaenicke, Erik de Castro Lopo]
2102 *) Remove root CA certificates of commercial CAs:
2104 The OpenSSL project does not recommend any specific CA and does not
2105 have any policy with respect to including or excluding any CA.
2106 Therefore it does not make any sense to ship an arbitrary selection
2107 of root CA certificates with the OpenSSL software.
2110 *) RSA OAEP patches to fix two separate invalid memory reads.
2111 The first one involves inputs when 'lzero' is greater than
2112 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2113 before the beginning of from). The second one involves inputs where
2114 the 'db' section contains nothing but zeroes (there is a one-byte
2115 invalid read after the end of 'db').
2116 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2118 *) Partial backport from 0.9.9-dev:
2120 Introduce bn_mul_mont (dedicated Montgomery multiplication
2121 procedure) as a candidate for BIGNUM assembler implementation.
2122 While 0.9.9-dev uses assembler for various architectures, only
2123 x86_64 is available by default here in the 0.9.8 branch, and
2124 32-bit x86 is available through a compile-time setting.
2126 To try the 32-bit x86 assembler implementation, use Configure
2127 option "enable-montasm" (which exists only for this backport).
2129 As "enable-montasm" for 32-bit x86 disclaims code stability
2130 anyway, in this constellation we activate additional code
2131 backported from 0.9.9-dev for further performance improvements,
2132 namely BN_from_montgomery_word. (To enable this otherwise,
2133 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2135 [Andy Polyakov (backport partially by Bodo Moeller)]
2137 *) Add TLS session ticket callback. This allows an application to set
2138 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2139 values. This is useful for key rollover for example where several key
2140 sets may exist with different names.
2143 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2144 This was broken until now in 0.9.8 releases, such that the only way
2145 a registered ENGINE could be used (assuming it initialises
2146 successfully on the host) was to explicitly set it as the default
2147 for the relevant algorithms. This is in contradiction with 0.9.7
2148 behaviour and the documentation. With this fix, when an ENGINE is
2149 registered into a given algorithm's table of implementations, the
2150 'uptodate' flag is reset so that auto-discovery will be used next
2151 time a new context for that algorithm attempts to select an
2153 [Ian Lister (tweaked by Geoff Thorpe)]
2155 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2156 implemention in the following ways:
2158 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2161 Lack of BER streaming support means one pass streaming processing is
2162 only supported if data is detached: setting the streaming flag is
2163 ignored for embedded content.
2165 CMS support is disabled by default and must be explicitly enabled
2166 with the enable-cms configuration option.
2169 *) Update the GMP engine glue to do direct copies between BIGNUM and
2170 mpz_t when openssl and GMP use the same limb size. Otherwise the
2171 existing "conversion via a text string export" trick is still used.
2172 [Paul Sheer <paulsheer@gmail.com>]
2174 *) Zlib compression BIO. This is a filter BIO which compressed and
2175 uncompresses any data passed through it.
2178 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2179 RFC3394 compatible AES key wrapping.
2182 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2183 sets string data without copying. X509_ALGOR_set0() and
2184 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2185 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2186 from an X509_ATTRIBUTE structure optionally checking it occurs only
2187 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2191 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2192 to get the expected BN_FLG_CONSTTIME behavior.
2193 [Bodo Moeller (Google)]
2197 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2198 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2199 - added some more tests to do_tests.pl
2200 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2201 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2202 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2203 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2204 - various changes to netware.pl to enable gcc-cross builds on Win32
2206 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2207 - various changes to fix missing prototype warnings
2208 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2209 - added AES, WHIRLPOOL and CPUID assembler code to build files
2210 - added missing AES assembler make rules to mk1mf.pl
2211 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2212 [Guenter Knauf <eflash@gmx.net>]
2214 *) Implement certificate status request TLS extension defined in RFC3546.
2215 A client can set the appropriate parameters and receive the encoded
2216 OCSP response via a callback. A server can query the supplied parameters
2217 and set the encoded OCSP response in the callback. Add simplified examples
2218 to s_client and s_server.
2221 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2223 *) Fix various bugs:
2224 + Binary incompatibility of ssl_ctx_st structure
2225 + DTLS interoperation with non-compliant servers
2226 + Don't call get_session_cb() without proposed session
2227 + Fix ia64 assembler code
2228 [Andy Polyakov, Steve Henson]
2230 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2232 *) DTLS Handshake overhaul. There were longstanding issues with
2233 OpenSSL DTLS implementation, which were making it impossible for
2234 RFC 4347 compliant client to communicate with OpenSSL server.
2235 Unfortunately just fixing these incompatibilities would "cut off"
2236 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2237 server keeps tolerating non RFC compliant syntax. The opposite is
2238 not true, 0.9.8f client can not communicate with earlier server.
2239 This update even addresses CVE-2007-4995.
2242 *) Changes to avoid need for function casts in OpenSSL: some compilers
2243 (gcc 4.2 and later) reject their use.
2244 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2247 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2248 RFC4507bis. The encrypted ticket format is an encrypted encoded
2249 SSL_SESSION structure, that way new session features are automatically
2252 If a client application caches session in an SSL_SESSION structure
2253 support is transparent because tickets are now stored in the encoded
2256 The SSL_CTX structure automatically generates keys for ticket
2257 protection in servers so again support should be possible
2258 with no application modification.
2260 If a client or server wishes to disable RFC4507 support then the option
2261 SSL_OP_NO_TICKET can be set.
2263 Add a TLS extension debugging callback to allow the contents of any client
2264 or server extensions to be examined.
2266 This work was sponsored by Google.
2269 *) Add initial support for TLS extensions, specifically for the server_name
2270 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2271 have new members for a host name. The SSL data structure has an
2272 additional member SSL_CTX *initial_ctx so that new sessions can be
2273 stored in that context to allow for session resumption, even after the
2274 SSL has been switched to a new SSL_CTX in reaction to a client's
2275 server_name extension.
2277 New functions (subject to change):
2279 SSL_get_servername()
2280 SSL_get_servername_type()
2283 New CTRL codes and macros (subject to change):
2285 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2286 - SSL_CTX_set_tlsext_servername_callback()
2287 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2288 - SSL_CTX_set_tlsext_servername_arg()
2289 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2291 openssl s_client has a new '-servername ...' option.
2293 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2294 '-key2 ...', '-servername_fatal' (subject to change). This allows
2295 testing the HostName extension for a specific single host name ('-cert'
2296 and '-key' remain fallbacks for handshakes without HostName
2297 negotiation). If the unrecogninzed_name alert has to be sent, this by
2298 default is a warning; it becomes fatal with the '-servername_fatal'
2301 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2303 *) Add AES and SSE2 assembly language support to VC++ build.
2306 *) Mitigate attack on final subtraction in Montgomery reduction.
2309 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2310 (which previously caused an internal error).
2313 *) Squeeze another 10% out of IGE mode when in != out.
2316 *) AES IGE mode speedup.
2317 [Dean Gaudet (Google)]
2319 *) Add the Korean symmetric 128-bit cipher SEED (see
2320 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2321 add SEED ciphersuites from RFC 4162:
2323 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2324 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2325 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2326 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2328 To minimize changes between patchlevels in the OpenSSL 0.9.8
2329 series, SEED remains excluded from compilation unless OpenSSL
2330 is configured with 'enable-seed'.
2331 [KISA, Bodo Moeller]
2333 *) Mitigate branch prediction attacks, which can be practical if a
2334 single processor is shared, allowing a spy process to extract
2335 information. For detailed background information, see
2336 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2337 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2338 and Necessary Software Countermeasures"). The core of the change
2339 are new versions BN_div_no_branch() and
2340 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2341 respectively, which are slower, but avoid the security-relevant
2342 conditional branches. These are automatically called by BN_div()
2343 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2344 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2345 remove a conditional branch.
2347 BN_FLG_CONSTTIME is the new name for the previous
2348 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2349 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2350 in the exponent causes BN_mod_exp_mont() to use the alternative
2351 implementation in BN_mod_exp_mont_consttime().) The old name
2352 remains as a deprecated alias.
2354 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2355 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2356 constant-time implementations for more than just exponentiation.
2357 Here too the old name is kept as a deprecated alias.
2359 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2360 the BN_BLINDING structure gets an independent copy of the
2361 modulus. This means that the previous "BIGNUM *m" argument to
2362 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2363 essentially becomes "const BIGNUM *m", although we can't actually
2364 change this in the header file before 0.9.9. It allows
2365 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2366 enable BN_FLG_CONSTTIME.
2368 [Matthew D Wood (Intel Corp)]
2370 *) In the SSL/TLS server implementation, be strict about session ID
2371 context matching (which matters if an application uses a single
2372 external cache for different purposes). Previously,
2373 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2374 set. This did ensure strict client verification, but meant that,
2375 with applications using a single external cache for quite
2376 different requirements, clients could circumvent ciphersuite
2377 restrictions for a given session ID context by starting a session
2378 in a different context.
2381 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2382 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2383 authentication-only ciphersuites.
2386 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2387 not complete and could lead to a possible single byte overflow
2388 (CVE-2007-5135) [Ben Laurie]
2390 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2392 *) Since AES128 and AES256 (and similarly Camellia128 and
2393 Camellia256) share a single mask bit in the logic of
2394 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2395 kludge to work properly if AES128 is available and AES256 isn't
2396 (or if Camellia128 is available and Camellia256 isn't).
2399 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2400 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2401 When a point or a seed is encoded in a BIT STRING, we need to
2402 prevent the removal of trailing zero bits to get the proper DER
2403 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2404 of a NamedBitList, for which trailing 0 bits need to be removed.)
2407 *) Have SSL/TLS server implementation tolerate "mismatched" record
2408 protocol version while receiving ClientHello even if the
2409 ClientHello is fragmented. (The server can't insist on the
2410 particular protocol version it has chosen before the ServerHello
2411 message has informed the client about his choice.)
2414 *) Add RFC 3779 support.
2415 [Rob Austein for ARIN, Ben Laurie]
2417 *) Load error codes if they are not already present instead of using a
2418 static variable. This allows them to be cleanly unloaded and reloaded.
2419 Improve header file function name parsing.
2422 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2423 or CAPABILITY handshake as required by RFCs.
2426 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2428 *) Introduce limits to prevent malicious keys being able to
2429 cause a denial of service. (CVE-2006-2940)
2430 [Steve Henson, Bodo Moeller]
2432 *) Fix ASN.1 parsing of certain invalid structures that can result
2433 in a denial of service. (CVE-2006-2937) [Steve Henson]
2435 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2436 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2438 *) Fix SSL client code which could crash if connecting to a
2439 malicious SSLv2 server. (CVE-2006-4343)
2440 [Tavis Ormandy and Will Drewry, Google Security Team]
2442 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2443 match only those. Before that, "AES256-SHA" would be interpreted
2444 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2445 the same strength classification in 0.9.7h) as we currently only
2446 have a single AES bit in the ciphersuite description bitmap.
2447 That change, however, also applied to ciphersuite strings such as
2448 "RC4-MD5" that intentionally matched multiple ciphersuites --
2449 namely, SSL 2.0 ciphersuites in addition to the more common ones
2450 from SSL 3.0/TLS 1.0.
2452 So we change the selection algorithm again: Naming an explicit
2453 ciphersuite selects this one ciphersuite, and any other similar
2454 ciphersuite (same bitmap) from *other* protocol versions.
2455 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2456 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2458 Since SSL 2.0 does not have any ciphersuites for which the
2459 128/256 bit distinction would be relevant, this works for now.
2460 The proper fix will be to use different bits for AES128 and
2461 AES256, which would have avoided the problems from the beginning;
2462 however, bits are scarce, so we can only do this in a new release
2463 (not just a patchlevel) when we can change the SSL_CIPHER
2464 definition to split the single 'unsigned long mask' bitmap into
2465 multiple values to extend the available space.
2469 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2471 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2472 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2474 *) Add AES IGE and biIGE modes.
2477 *) Change the Unix randomness entropy gathering to use poll() when
2478 possible instead of select(), since the latter has some
2479 undesirable limitations.
2480 [Darryl Miles via Richard Levitte and Bodo Moeller]
2482 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2483 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2484 cannot be implicitly activated as part of, e.g., the "AES" alias.
2485 However, please upgrade to OpenSSL 0.9.9[-dev] for
2486 non-experimental use of the ECC ciphersuites to get TLS extension
2487 support, which is required for curve and point format negotiation
2488 to avoid potential handshake problems.
2491 *) Disable rogue ciphersuites:
2493 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2494 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2495 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2497 The latter two were purportedly from
2498 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2501 Also deactivate the remaining ciphersuites from
2502 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2503 unofficial, and the ID has long expired.
2506 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2507 dual-core machines) and other potential thread-safety issues.
2510 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2511 versions), which is now available for royalty-free use
2512 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2513 Also, add Camellia TLS ciphersuites from RFC 4132.
2515 To minimize changes between patchlevels in the OpenSSL 0.9.8
2516 series, Camellia remains excluded from compilation unless OpenSSL
2517 is configured with 'enable-camellia'.
2520 *) Disable the padding bug check when compression is in use. The padding
2521 bug check assumes the first packet is of even length, this is not
2522 necessarily true if compresssion is enabled and can result in false
2523 positives causing handshake failure. The actual bug test is ancient
2524 code so it is hoped that implementations will either have fixed it by
2525 now or any which still have the bug do not support compression.
2528 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2530 *) When applying a cipher rule check to see if string match is an explicit
2531 cipher suite and only match that one cipher suite if it is.
2534 *) Link in manifests for VC++ if needed.
2535 [Austin Ziegler <halostatue@gmail.com>]
2537 *) Update support for ECC-based TLS ciphersuites according to
2538 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2539 TLS extensions, which are supported starting with the 0.9.9
2540 branch, not in the OpenSSL 0.9.8 branch).
2543 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2544 opaque EVP_CIPHER_CTX handling.
2547 *) Fixes and enhancements to zlib compression code. We now only use
2548 "zlib1.dll" and use the default __cdecl calling convention on Win32
2549 to conform with the standards mentioned here:
2550 http://www.zlib.net/DLL_FAQ.txt
2551 Static zlib linking now works on Windows and the new --with-zlib-include
2552 --with-zlib-lib options to Configure can be used to supply the location
2553 of the headers and library. Gracefully handle case where zlib library
2557 *) Several fixes and enhancements to the OID generation code. The old code
2558 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2559 handle numbers larger than ULONG_MAX, truncated printing and had a
2560 non standard OBJ_obj2txt() behaviour.
2563 *) Add support for building of engines under engine/ as shared libraries
2564 under VC++ build system.
2567 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2568 Hopefully, we will not see any false combination of paths any more.
2571 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2573 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2574 (part of SSL_OP_ALL). This option used to disable the
2575 countermeasure against man-in-the-middle protocol-version
2576 rollback in the SSL 2.0 server implementation, which is a bad
2577 idea. (CVE-2005-2969)
2579 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2580 for Information Security, National Institute of Advanced Industrial
2581 Science and Technology [AIST], Japan)]
2583 *) Add two function to clear and return the verify parameter flags.
2586 *) Keep cipherlists sorted in the source instead of sorting them at
2587 runtime, thus removing the need for a lock.
2590 *) Avoid some small subgroup attacks in Diffie-Hellman.
2591 [Nick Mathewson and Ben Laurie]
2593 *) Add functions for well-known primes.
2596 *) Extended Windows CE support.
2597 [Satoshi Nakamura and Andy Polyakov]
2599 *) Initialize SSL_METHOD structures at compile time instead of during
2600 runtime, thus removing the need for a lock.
2603 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2604 attempting to decrypt each encrypted key in turn. Add support to
2608 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2610 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2613 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2616 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2617 key into the same file any more.
2620 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2623 *) Add -utf8 command line and config file option to 'ca'.
2624 [Stefan <stf@udoma.org]
2626 *) Removed the macro des_crypt(), as it seems to conflict with some
2627 libraries. Use DES_crypt().
2630 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2631 involves renaming the source and generated shared-libs for
2632 both. The engines will accept the corrected or legacy ids
2633 ('ncipher' and '4758_cca' respectively) when binding. NB,
2634 this only applies when building 'shared'.
2635 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2637 *) Add attribute functions to EVP_PKEY structure. Modify
2638 PKCS12_create() to recognize a CSP name attribute and
2639 use it. Make -CSP option work again in pkcs12 utility.
2642 *) Add new functionality to the bn blinding code:
2643 - automatic re-creation of the BN_BLINDING parameters after
2644 a fixed number of uses (currently 32)
2645 - add new function for parameter creation
2646 - introduce flags to control the update behaviour of the
2647 BN_BLINDING parameters
2648 - hide BN_BLINDING structure
2649 Add a second BN_BLINDING slot to the RSA structure to improve
2650 performance when a single RSA object is shared among several
2654 *) Add support for DTLS.
2655 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2657 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2658 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2661 *) Remove buggy and incompletet DH cert support from
2662 ssl/ssl_rsa.c and ssl/s3_both.c
2665 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2666 the apps/openssl applications.
2669 *) Compile clean with "-Wall -Wmissing-prototypes
2670 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2671 DEBUG_SAFESTACK must also be set.
2674 *) Change ./Configure so that certain algorithms can be disabled by default.
2675 The new counterpiece to "no-xxx" is "enable-xxx".
2677 The patented RC5 and MDC2 algorithms will now be disabled unless
2678 "enable-rc5" and "enable-mdc2", respectively, are specified.
2680 (IDEA remains enabled despite being patented. This is because IDEA
2681 is frequently required for interoperability, and there is no license
2682 fee for non-commercial use. As before, "no-idea" can be used to
2683 avoid this algorithm.)
2687 *) Add processing of proxy certificates (see RFC 3820). This work was
2688 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2689 EGEE (Enabling Grids for E-science in Europe).
2692 *) RC4 performance overhaul on modern architectures/implementations, such
2693 as Intel P4, IA-64 and AMD64.
2696 *) New utility extract-section.pl. This can be used specify an alternative
2697 section number in a pod file instead of having to treat each file as
2698 a separate case in Makefile. This can be done by adding two lines to the
2701 =for comment openssl_section:XXX
2703 The blank line is mandatory.
2707 *) New arguments -certform, -keyform and -pass for s_client and s_server
2708 to allow alternative format key and certificate files and passphrase
2712 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2713 update associated structures and add various utility functions.
2715 Add new policy related verify parameters, include policy checking in
2716 standard verify code. Enhance 'smime' application with extra parameters
2717 to support policy checking and print out.
2720 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2721 Nehemiah processors. These extensions support AES encryption in hardware
2722 as well as RNG (though RNG support is currently disabled).
2723 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2725 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2728 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2729 [Andy Polyakov and a number of other people]
2731 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2732 implementation contributed by IBM.
2733 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2735 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2736 exponent rather than 'unsigned long'. There is a corresponding change to
2737 the new 'rsa_keygen' element of the RSA_METHOD structure.
2738 [Jelte Jansen, Geoff Thorpe]
2740 *) Functionality for creating the initial serial number file is now
2741 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2743 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2744 number file to 1, which is bound to cause problems. To avoid
2745 the problems while respecting compatibility between different 0.9.7
2746 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2747 CA.pl for serial number initialization. With the new release 0.9.8,
2748 we can fix the problem directly in the 'ca' utility.)
2751 *) Reduced header interdepencies by declaring more opaque objects in
2752 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2753 give fewer recursive includes, which could break lazy source code - so
2754 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2755 developers should define this symbol when building and using openssl to
2756 ensure they track the recommended behaviour, interfaces, [etc], but
2757 backwards-compatible behaviour prevails when this isn't defined.
2760 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2763 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2764 This will generate a random key of the appropriate length based on the
2765 cipher context. The EVP_CIPHER can provide its own random key generation
2766 routine to support keys of a specific form. This is used in the des and
2767 3des routines to generate a key of the correct parity. Update S/MIME
2768 code to use new functions and hence generate correct parity DES keys.
2769 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2770 valid (weak or incorrect parity).
2773 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2774 as looking them up. This is useful when the verified structure may contain
2775 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2776 present unless the new PKCS7_NO_CRL flag is asserted.
2779 *) Extend ASN1 oid configuration module. It now additionally accepts the
2782 shortName = some long name, 1.2.3.4
2785 *) Reimplemented the BN_CTX implementation. There is now no more static
2786 limitation on the number of variables it can handle nor the depth of the
2787 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2788 information can now expand as required, and rather than having a single
2789 static array of bignums, BN_CTX now uses a linked-list of such arrays
2790 allowing it to expand on demand whilst maintaining the usefulness of
2791 BN_CTX's "bundling".
2794 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2795 to allow all RSA operations to function using a single BN_CTX.
2798 *) Preliminary support for certificate policy evaluation and checking. This
2799 is initially intended to pass the tests outlined in "Conformance Testing
2800 of Relying Party Client Certificate Path Processing Logic" v1.07.
2803 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2804 remained unused and not that useful. A variety of other little bignum
2805 tweaks and fixes have also been made continuing on from the audit (see
2809 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2810 associated ASN1, EVP and SSL functions and old ASN1 macros.
2813 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2814 and this should never fail. So the return value from the use of
2815 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2816 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2819 *) BN_CTX_get() should return zero-valued bignums, providing the same
2820 initialised value as BN_new().
2821 [Geoff Thorpe, suggested by Ulf Möller]
2823 *) Support for inhibitAnyPolicy certificate extension.
2826 *) An audit of the BIGNUM code is underway, for which debugging code is
2827 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2828 is considered valid when processing BIGNUMs, and causes execution to
2829 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2830 further steps are taken to deliberately pollute unused data in BIGNUM
2831 structures to try and expose faulty code further on. For now, openssl will
2832 (in its default mode of operation) continue to tolerate the inconsistent
2833 forms that it has tolerated in the past, but authors and packagers should
2834 consider trying openssl and their own applications when compiled with
2835 these debugging symbols defined. It will help highlight potential bugs in
2836 their own code, and will improve the test coverage for OpenSSL itself. At
2837 some point, these tighter rules will become openssl's default to improve
2838 maintainability, though the assert()s and other overheads will remain only
2839 in debugging configurations. See bn.h for more details.
2840 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2842 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2843 that can only be obtained through BN_CTX_new() (which implicitly
2844 initialises it). The presence of this function only made it possible
2845 to overwrite an existing structure (and cause memory leaks).
2848 *) Because of the callback-based approach for implementing LHASH as a
2849 template type, lh_insert() adds opaque objects to hash-tables and
2850 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2851 to clean up those corresponding objects before destroying the hash table
2852 (and losing the object pointers). So some over-zealous constifications in
2853 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2854 objects as "const" and the lh_doall[_arg] callback wrappers are not
2855 prototyped to have "const" restrictions on the object pointers they are
2856 given (and so aren't required to cast them away any more).
2859 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2860 (speed) prefers to use its own implementation. The two implementations
2861 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2862 its object type properly exposed (MS_TM) instead of casting to/from "char
2863 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2864 aren't necessarily the greatest nomenclatures - but this is what was used
2865 internally to the implementation so I've used that for now.
2868 *) Ensure that deprecated functions do not get compiled when
2869 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2870 the self-tests were still using deprecated key-generation functions so
2871 these have been updated also.
2874 *) Reorganise PKCS#7 code to separate the digest location functionality
2875 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2876 New function PKCS7_set_digest() to set the digest type for PKCS#7
2877 digestedData type. Add additional code to correctly generate the
2878 digestedData type and add support for this type in PKCS7 initialization
2882 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2883 structure of type "other".
2886 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2887 sure the loop does correctly stop and breaking ("division by zero")
2888 modulus operations are not performed. The (pre-generated) prime
2889 table crypto/bn/bn_prime.h was already correct, but it could not be
2890 re-generated on some platforms because of the "division by zero"
2891 situation in the script.
2892 [Ralf S. Engelschall]
2894 *) Update support for ECC-based TLS ciphersuites according to
2895 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2896 SHA-1 now is only used for "small" curves (where the
2897 representation of a field element takes up to 24 bytes); for
2898 larger curves, the field element resulting from ECDH is directly
2899 used as premaster secret.
2900 [Douglas Stebila (Sun Microsystems Laboratories)]
2902 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2903 curve secp160r1 to the tests.
2904 [Douglas Stebila (Sun Microsystems Laboratories)]
2906 *) Add the possibility to load symbols globally with DSO.
2907 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2909 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2910 control of the error stack.
2913 *) Add support for STORE in ENGINE.
2916 *) Add the STORE type. The intention is to provide a common interface
2917 to certificate and key stores, be they simple file-based stores, or
2918 HSM-type store, or LDAP stores, or...
2919 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2922 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2923 pass a list of arguments to any function as well as provide a way
2924 for a function to pass data back to the caller.
2927 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2928 works like BUF_strdup() but can be used to duplicate a portion of
2929 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2933 *) Add the function sk_find_ex() which works like sk_find(), but will
2934 return an index to an element even if an exact match couldn't be
2935 found. The index is guaranteed to point at the element where the
2936 searched-for key would be inserted to preserve sorting order.
2939 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2940 takes an extra flags argument for optional functionality. Currently,
2941 the following flags are defined:
2943 OBJ_BSEARCH_VALUE_ON_NOMATCH
2944 This one gets OBJ_bsearch_ex() to return a pointer to the first
2945 element where the comparing function returns a negative or zero
2948 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2949 This one gets OBJ_bsearch_ex() to return a pointer to the first
2950 element where the comparing function returns zero. This is useful
2951 if there are more than one element where the comparing function
2955 *) Make it possible to create self-signed certificates with 'openssl ca'
2956 in such a way that the self-signed certificate becomes part of the
2957 CA database and uses the same mechanisms for serial number generation
2958 as all other certificate signing. The new flag '-selfsign' enables
2959 this functionality. Adapt CA.sh and CA.pl.in.
2962 *) Add functionality to check the public key of a certificate request
2963 against a given private. This is useful to check that a certificate
2964 request can be signed by that key (self-signing).
2967 *) Make it possible to have multiple active certificates with the same
2968 subject in the CA index file. This is done only if the keyword
2969 'unique_subject' is set to 'no' in the main CA section (default
2970 if 'CA_default') of the configuration file. The value is saved
2971 with the database itself in a separate index attribute file,
2972 named like the index file with '.attr' appended to the name.
2975 *) Generate muti valued AVAs using '+' notation in config files for
2979 *) Support for nameConstraints certificate extension.
2982 *) Support for policyConstraints certificate extension.
2985 *) Support for policyMappings certificate extension.
2988 *) Make sure the default DSA_METHOD implementation only uses its
2989 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2990 and change its own handlers to be NULL so as to remove unnecessary
2991 indirection. This lets alternative implementations fallback to the
2992 default implementation more easily.
2995 *) Support for directoryName in GeneralName related extensions
2999 *) Make it possible to link applications using Makefile.shared.
3000 Make that possible even when linking against static libraries!
3003 *) Support for single pass processing for S/MIME signing. This now
3004 means that S/MIME signing can be done from a pipe, in addition
3005 cleartext signing (multipart/signed type) is effectively streaming
3006 and the signed data does not need to be all held in memory.
3008 This is done with a new flag PKCS7_STREAM. When this flag is set
3009 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
3010 is done after the data is output (and digests calculated) in
3011 SMIME_write_PKCS7().
3014 *) Add full support for -rpath/-R, both in shared libraries and
3015 applications, at least on the platforms where it's known how
3019 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
3020 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
3021 will now compute a table of multiples of the generator that
3022 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
3023 faster (notably in the case of a single point multiplication,
3024 scalar * generator).
3025 [Nils Larsch, Bodo Moeller]
3027 *) IPv6 support for certificate extensions. The various extensions
3028 which use the IP:a.b.c.d can now take IPv6 addresses using the
3029 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
3033 *) Added an ENGINE that implements RSA by performing private key
3034 exponentiations with the GMP library. The conversions to and from
3035 GMP's mpz_t format aren't optimised nor are any montgomery forms
3036 cached, and on x86 it appears OpenSSL's own performance has caught up.
3037 However there are likely to be other architectures where GMP could
3038 provide a boost. This ENGINE is not built in by default, but it can be
3039 specified at Configure time and should be accompanied by the necessary
3040 linker additions, eg;
3041 ./config -DOPENSSL_USE_GMP -lgmp
3044 *) "openssl engine" will not display ENGINE/DSO load failure errors when
3045 testing availability of engines with "-t" - the old behaviour is
3046 produced by increasing the feature's verbosity with "-tt".
3049 *) ECDSA routines: under certain error conditions uninitialized BN objects
3050 could be freed. Solution: make sure initialization is performed early
3051 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
3055 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
3056 and DH_METHOD (eg. by ENGINE implementations) to override the normal
3057 software implementations. For DSA and DH, parameter generation can
3058 also be overriden by providing the appropriate method callbacks.
3061 *) Change the "progress" mechanism used in key-generation and
3062 primality testing to functions that take a new BN_GENCB pointer in
3063 place of callback/argument pairs. The new API functions have "_ex"
3064 postfixes and the older functions are reimplemented as wrappers for
3065 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
3066 declarations of the old functions to help (graceful) attempts to
3067 migrate to the new functions. Also, the new key-generation API
3068 functions operate on a caller-supplied key-structure and return
3069 success/failure rather than returning a key or NULL - this is to
3070 help make "keygen" another member function of RSA_METHOD etc.
3072 Example for using the new callback interface:
3074 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
3078 BN_GENCB_set(&my_cb, my_callback, my_arg);
3080 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
3081 /* For the meaning of a, b in calls to my_callback(), see the
3082 * documentation of the function that calls the callback.
3083 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
3084 * my_callback should return 1 if it wants BN_is_prime_ex()
3085 * to continue, or 0 to stop.
3090 *) Change the ZLIB compression method to be stateful, and make it
3091 available to TLS with the number defined in
3092 draft-ietf-tls-compression-04.txt.
3095 *) Add the ASN.1 structures and functions for CertificatePair, which
3096 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3098 CertificatePair ::= SEQUENCE {
3099 forward [0] Certificate OPTIONAL,
3100 reverse [1] Certificate OPTIONAL,
3101 -- at least one of the pair shall be present -- }
3103 Also implement the PEM functions to read and write certificate
3104 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3106 This needed to be defined, mostly for the sake of the LDAP
3107 attribute crossCertificatePair, but may prove useful elsewhere as
3111 *) Make it possible to inhibit symlinking of shared libraries in
3112 Makefile.shared, for Cygwin's sake.
3115 *) Extend the BIGNUM API by creating a function
3116 void BN_set_negative(BIGNUM *a, int neg);
3117 and a macro that behave like
3118 int BN_is_negative(const BIGNUM *a);
3120 to avoid the need to access 'a->neg' directly in applications.
3123 *) Implement fast modular reduction for pseudo-Mersenne primes
3124 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3125 EC_GROUP_new_curve_GFp() will now automatically use this
3127 [Nils Larsch <nla@trustcenter.de>]
3129 *) Add new lock type (CRYPTO_LOCK_BN).
3132 *) Change the ENGINE framework to automatically load engines
3133 dynamically from specific directories unless they could be
3134 found to already be built in or loaded. Move all the
3135 current engines except for the cryptodev one to a new
3137 The engines in engines/ are built as shared libraries if
3138 the "shared" options was given to ./Configure or ./config.
3139 Otherwise, they are inserted in libcrypto.a.
3140 /usr/local/ssl/engines is the default directory for dynamic
3141 engines, but that can be overriden at configure time through
3142 the usual use of --prefix and/or --openssldir, and at run
3143 time with the environment variable OPENSSL_ENGINES.
3144 [Geoff Thorpe and Richard Levitte]
3146 *) Add Makefile.shared, a helper makefile to build shared
3147 libraries. Addapt Makefile.org.
3150 *) Add version info to Win32 DLLs.
3151 [Peter 'Luna' Runestig" <peter@runestig.com>]
3153 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3154 can be added using this API to created arbitrary PKCS#12
3155 files while avoiding the low level API.
3157 New options to PKCS12_create(), key or cert can be NULL and
3158 will then be omitted from the output file. The encryption
3159 algorithm NIDs can be set to -1 for no encryption, the mac
3160 iteration count can be set to 0 to omit the mac.
3162 Enhance pkcs12 utility by making the -nokeys and -nocerts
3163 options work when creating a PKCS#12 file. New option -nomac
3164 to omit the mac, NONE can be set for an encryption algorithm.
3165 New code is modified to use the enhanced PKCS12_create()
3166 instead of the low level API.
3169 *) Extend ASN1 encoder to support indefinite length constructed
3170 encoding. This can output sequences tags and octet strings in
3171 this form. Modify pk7_asn1.c to support indefinite length
3172 encoding. This is experimental and needs additional code to
3173 be useful, such as an ASN1 bio and some enhanced streaming
3176 Extend template encode functionality so that tagging is passed
3177 down to the template encoder.
3180 *) Let 'openssl req' fail if an argument to '-newkey' is not
3181 recognized instead of using RSA as a default.
3184 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3185 As these are not official, they are not included in "ALL";
3186 the "ECCdraft" ciphersuite group alias can be used to select them.
3187 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3189 *) Add ECDH engine support.
3190 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3192 *) Add ECDH in new directory crypto/ecdh/.
3193 [Douglas Stebila (Sun Microsystems Laboratories)]
3195 *) Let BN_rand_range() abort with an error after 100 iterations
3196 without success (which indicates a broken PRNG).
3199 *) Change BN_mod_sqrt() so that it verifies that the input value
3200 is really the square of the return value. (Previously,
3201 BN_mod_sqrt would show GIGO behaviour.)
3204 *) Add named elliptic curves over binary fields from X9.62, SECG,
3205 and WAP/WTLS; add OIDs that were still missing.
3207 [Sheueling Chang Shantz and Douglas Stebila
3208 (Sun Microsystems Laboratories)]
3210 *) Extend the EC library for elliptic curves over binary fields
3211 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3214 EC_GF2m_simple_method
3218 EC_GROUP_new_curve_GF2m
3219 EC_GROUP_set_curve_GF2m
3220 EC_GROUP_get_curve_GF2m
3221 EC_POINT_set_affine_coordinates_GF2m
3222 EC_POINT_get_affine_coordinates_GF2m
3223 EC_POINT_set_compressed_coordinates_GF2m
3225 Point compression for binary fields is disabled by default for
3226 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3229 As binary polynomials are represented as BIGNUMs, various members
3230 of the EC_GROUP and EC_POINT data structures can be shared
3231 between the implementations for prime fields and binary fields;
3232 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3233 are essentially identical to their ..._GFp counterparts.
3234 (For simplicity, the '..._GFp' prefix has been dropped from
3235 various internal method names.)
3237 An internal 'field_div' method (similar to 'field_mul' and
3238 'field_sqr') has been added; this is used only for binary fields.
3240 [Sheueling Chang Shantz and Douglas Stebila
3241 (Sun Microsystems Laboratories)]
3243 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3244 through methods ('mul', 'precompute_mult').
3246 The generic implementations (now internally called 'ec_wNAF_mul'
3247 and 'ec_wNAF_precomputed_mult') remain the default if these
3248 methods are undefined.
3250 [Sheueling Chang Shantz and Douglas Stebila
3251 (Sun Microsystems Laboratories)]
3253 *) New function EC_GROUP_get_degree, which is defined through
3254 EC_METHOD. For curves over prime fields, this returns the bit
3255 length of the modulus.
3257 [Sheueling Chang Shantz and Douglas Stebila
3258 (Sun Microsystems Laboratories)]
3260 *) New functions EC_GROUP_dup, EC_POINT_dup.
3261 (These simply call ..._new and ..._copy).
3263 [Sheueling Chang Shantz and Douglas Stebila
3264 (Sun Microsystems Laboratories)]
3266 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3267 Polynomials are represented as BIGNUMs (where the sign bit is not
3268 used) in the following functions [macros]:
3271 BN_GF2m_sub [= BN_GF2m_add]
3272 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3273 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3274 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3276 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3277 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3278 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3279 BN_GF2m_cmp [= BN_ucmp]
3281 (Note that only the 'mod' functions are actually for fields GF(2^m).
3282 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3284 For some functions, an the irreducible polynomial defining a
3285 field can be given as an 'unsigned int[]' with strictly
3286 decreasing elements giving the indices of those bits that are set;
3287 i.e., p[] represents the polynomial
3288 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3290 p[0] > p[1] > ... > p[k] = 0.
3291 This applies to the following functions:
3296 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3297 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3299 BN_GF2m_mod_sqrt_arr
3300 BN_GF2m_mod_solve_quad_arr
3304 Conversion can be performed by the following functions:
3309 bntest.c has additional tests for binary polynomial arithmetic.
3311 Two implementations for BN_GF2m_mod_div() are available.
3312 The default algorithm simply uses BN_GF2m_mod_inv() and
3313 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3314 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3315 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3317 [Sheueling Chang Shantz and Douglas Stebila
3318 (Sun Microsystems Laboratories)]
3320 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3321 functionality is disabled at compile-time.
3322 [Douglas Stebila <douglas.stebila@sun.com>]
3324 *) Change default behaviour of 'openssl asn1parse' so that more
3325 information is visible when viewing, e.g., a certificate:
3327 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3328 mode the content of non-printable OCTET STRINGs is output in a
3329 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3330 avoid the appearance of a printable string.
3331 [Nils Larsch <nla@trustcenter.de>]
3333 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3335 EC_GROUP_set_asn1_flag()
3336 EC_GROUP_get_asn1_flag()
3337 EC_GROUP_set_point_conversion_form()
3338 EC_GROUP_get_point_conversion_form()
3339 These control ASN1 encoding details:
3340 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3341 has been set to OPENSSL_EC_NAMED_CURVE.
3342 - Points are encoded in uncompressed form by default; options for
3343 asn1_for are as for point2oct, namely
3344 POINT_CONVERSION_COMPRESSED
3345 POINT_CONVERSION_UNCOMPRESSED
3346 POINT_CONVERSION_HYBRID
3348 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3351 EC_GROUP_get0_seed()
3352 EC_GROUP_get_seed_len()
3353 This is used only for ASN1 purposes (so far).
3354 [Nils Larsch <nla@trustcenter.de>]
3356 *) Add 'field_type' member to EC_METHOD, which holds the NID
3357 of the appropriate field type OID. The new function
3358 EC_METHOD_get_field_type() returns this value.
3359 [Nils Larsch <nla@trustcenter.de>]
3364 EC_POINT_point2hex()
3365 EC_POINT_hex2point()
3366 providing useful interfaces to EC_POINT_point2oct() and
3367 EC_POINT_oct2point().
3368 [Nils Larsch <nla@trustcenter.de>]
3370 *) Change internals of the EC library so that the functions
3371 EC_GROUP_set_generator()
3372 EC_GROUP_get_generator()
3373 EC_GROUP_get_order()
3374 EC_GROUP_get_cofactor()
3375 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3376 to methods, which would lead to unnecessary code duplication when
3377 adding different types of curves.
3378 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3380 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3381 arithmetic, and such that modified wNAFs are generated
3382 (which avoid length expansion in many cases).
3385 *) Add a function EC_GROUP_check_discriminant() (defined via
3386 EC_METHOD) that verifies that the curve discriminant is non-zero.
3388 Add a function EC_GROUP_check() that makes some sanity tests
3389 on a EC_GROUP, its generator and order. This includes
3390 EC_GROUP_check_discriminant().
3391 [Nils Larsch <nla@trustcenter.de>]
3393 *) Add ECDSA in new directory crypto/ecdsa/.
3395 Add applications 'openssl ecparam' and 'openssl ecdsa'
3396 (these are based on 'openssl dsaparam' and 'openssl dsa').
3398 ECDSA support is also included in various other files across the
3399 library. Most notably,
3400 - 'openssl req' now has a '-newkey ecdsa:file' option;
3401 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3402 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3403 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3404 them suitable for ECDSA where domain parameters must be
3405 extracted before the specific public key;
3406 - ECDSA engine support has been added.
3407 [Nils Larsch <nla@trustcenter.de>]
3409 *) Include some named elliptic curves, and add OIDs from X9.62,
3410 SECG, and WAP/WTLS. Each curve can be obtained from the new
3412 EC_GROUP_new_by_curve_name(),
3413 and the list of available named curves can be obtained with
3414 EC_get_builtin_curves().
3415 Also add a 'curve_name' member to EC_GROUP objects, which can be
3417 EC_GROUP_set_curve_name()
3418 EC_GROUP_get_curve_name()
3419 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3421 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3422 was actually never needed) and in BN_mul(). The removal in BN_mul()
3423 required a small change in bn_mul_part_recursive() and the addition
3424 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3425 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3426 bn_sub_words() and bn_add_words() except they take arrays with
3430 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3432 *) Cleanse PEM buffers before freeing them since they may contain
3434 [Benjamin Bennett <ben@psc.edu>]
3436 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3437 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3438 authentication-only ciphersuites.
3441 *) Since AES128 and AES256 share a single mask bit in the logic of
3442 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3443 kludge to work properly if AES128 is available and AES256 isn't.
3446 *) Expand security boundary to match 1.1.1 module.
3449 *) Remove redundant features: hash file source, editing of test vectors
3450 modify fipsld to use external fips_premain.c signature.
3453 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3454 run algorithm test programs.
3457 *) Make algorithm test programs more tolerant of whitespace.
3460 *) Have SSL/TLS server implementation tolerate "mismatched" record
3461 protocol version while receiving ClientHello even if the
3462 ClientHello is fragmented. (The server can't insist on the
3463 particular protocol version it has chosen before the ServerHello
3464 message has informed the client about his choice.)
3467 *) Load error codes if they are not already present instead of using a
3468 static variable. This allows them to be cleanly unloaded and reloaded.
3471 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3473 *) Introduce limits to prevent malicious keys being able to
3474 cause a denial of service. (CVE-2006-2940)
3475 [Steve Henson, Bodo Moeller]
3477 *) Fix ASN.1 parsing of certain invalid structures that can result
3478 in a denial of service. (CVE-2006-2937) [Steve Henson]
3480 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3481 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3483 *) Fix SSL client code which could crash if connecting to a
3484 malicious SSLv2 server. (CVE-2006-4343)
3485 [Tavis Ormandy and Will Drewry, Google Security Team]
3487 *) Change ciphersuite string processing so that an explicit
3488 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3489 will no longer include "AES128-SHA"), and any other similar
3490 ciphersuite (same bitmap) from *other* protocol versions (so that
3491 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3492 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3493 changes from 0.9.8b and 0.9.8d.
3496 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3498 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3499 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3501 *) Change the Unix randomness entropy gathering to use poll() when
3502 possible instead of select(), since the latter has some
3503 undesirable limitations.
3504 [Darryl Miles via Richard Levitte and Bodo Moeller]
3506 *) Disable rogue ciphersuites:
3508 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3509 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3510 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3512 The latter two were purportedly from
3513 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3516 Also deactive the remaining ciphersuites from
3517 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3518 unofficial, and the ID has long expired.
3521 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3522 dual-core machines) and other potential thread-safety issues.
3525 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3527 *) Adapt fipsld and the build system to link against the validated FIPS
3528 module in FIPS mode.
3531 *) Fixes for VC++ 2005 build under Windows.
3534 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3535 from a Windows bash shell such as MSYS. It is autodetected from the
3536 "config" script when run from a VC++ environment. Modify standard VC++
3537 build to use fipscanister.o from the GNU make build.
3540 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3542 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3543 The value now differs depending on if you build for FIPS or not.
3544 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3545 safely run with a non-FIPSed libcrypto, as it may crash because of
3546 the difference induced by this change.
3549 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3551 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3552 (part of SSL_OP_ALL). This option used to disable the
3553 countermeasure against man-in-the-middle protocol-version
3554 rollback in the SSL 2.0 server implementation, which is a bad
3555 idea. (CVE-2005-2969)
3557 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3558 for Information Security, National Institute of Advanced Industrial
3559 Science and Technology [AIST], Japan)]
3561 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3562 mainly for FIPS compliance and not fully integrated at this stage.
3565 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3566 the exponentiation using a fixed-length exponent. (Otherwise,
3567 the information leaked through timing could expose the secret key
3568 after many signatures; cf. Bleichenbacher's attack on DSA with
3572 *) Make a new fixed-window mod_exp implementation the default for
3573 RSA, DSA, and DH private-key operations so that the sequence of
3574 squares and multiplies and the memory access pattern are
3575 independent of the particular secret key. This will mitigate
3576 cache-timing and potential related attacks.
3578 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3579 and this is automatically used by BN_mod_exp_mont() if the new flag
3580 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3581 will use this BN flag for private exponents unless the flag
3582 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3583 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3585 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3587 *) Change the client implementation for SSLv23_method() and
3588 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3589 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3590 (Previously, the SSL 2.0 backwards compatible Client Hello
3591 message format would be used even with SSL_OP_NO_SSLv2.)
3594 *) Add support for smime-type MIME parameter in S/MIME messages which some
3598 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3599 a threadsafe manner. Modify rsa code to use new function and add calls
3600 to dsa and dh code (which had race conditions before).
3603 *) Include the fixed error library code in the C error file definitions
3604 instead of fixing them up at runtime. This keeps the error code
3605 structures constant.
3608 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3610 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3613 *) Fixes for newer kerberos headers. NB: the casts are needed because
3614 the 'length' field is signed on one version and unsigned on another
3615 with no (?) obvious way to tell the difference, without these VC++
3616 complains. Also the "definition" of FAR (blank) is no longer included
3617 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3618 some needed definitions.
3621 *) Undo Cygwin change.
3624 *) Added support for proxy certificates according to RFC 3820.
3625 Because they may be a security thread to unaware applications,
3626 they must be explicitely allowed in run-time. See
3627 docs/HOWTO/proxy_certificates.txt for further information.
3630 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3632 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3633 server and client random values. Previously
3634 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3635 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3637 This change has negligible security impact because:
3639 1. Server and client random values still have 24 bytes of pseudo random
3642 2. Server and client random values are sent in the clear in the initial
3645 3. The master secret is derived using the premaster secret (48 bytes in
3646 size for static RSA ciphersuites) as well as client server and random
3649 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3652 [Stephen Henson, reported by UK NISCC]
3654 *) Use Windows randomness collection on Cygwin.
3657 *) Fix hang in EGD/PRNGD query when communication socket is closed
3658 prematurely by EGD/PRNGD.
3659 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3661 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3664 *) Back-port of selected performance improvements from development
3665 branch, as well as improved support for PowerPC platforms.
3668 *) Add lots of checks for memory allocation failure, error codes to indicate
3669 failure and freeing up memory if a failure occurs.
3670 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3672 *) Add new -passin argument to dgst.
3675 *) Perform some character comparisons of different types in X509_NAME_cmp:
3676 this is needed for some certificates that reencode DNs into UTF8Strings
3677 (in violation of RFC3280) and can't or wont issue name rollover
3681 *) Make an explicit check during certificate validation to see that
3682 the CA setting in each certificate on the chain is correct. As a
3683 side effect always do the following basic checks on extensions,
3684 not just when there's an associated purpose to the check:
3686 - if there is an unhandled critical extension (unless the user
3687 has chosen to ignore this fault)
3688 - if the path length has been exceeded (if one is set at all)
3689 - that certain extensions fit the associated purpose (if one has
3693 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3695 *) Avoid a race condition when CRLs are checked in a multi threaded
3696 environment. This would happen due to the reordering of the revoked
3697 entries during signature checking and serial number lookup. Now the
3698 encoding is cached and the serial number sort performed under a lock.
3699 Add new STACK function sk_is_sorted().
3702 *) Add Delta CRL to the extension code.
3705 *) Various fixes to s3_pkt.c so alerts are sent properly.
3706 [David Holmes <d.holmes@f5.com>]
3708 *) Reduce the chances of duplicate issuer name and serial numbers (in
3709 violation of RFC3280) using the OpenSSL certificate creation utilities.
3710 This is done by creating a random 64 bit value for the initial serial
3711 number when a serial number file is created or when a self signed
3712 certificate is created using 'openssl req -x509'. The initial serial
3713 number file is created using 'openssl x509 -next_serial' in CA.pl
3714 rather than being initialized to 1.
3717 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3719 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3720 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3721 [Joe Orton, Steve Henson]
3723 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3725 [Joe Orton, Steve Henson]
3727 *) Make it possible to have multiple active certificates with the same
3728 subject in the CA index file. This is done only if the keyword
3729 'unique_subject' is set to 'no' in the main CA section (default
3730 if 'CA_default') of the configuration file. The value is saved
3731 with the database itself in a separate index attribute file,
3732 named like the index file with '.attr' appended to the name.
3735 *) X509 verify fixes. Disable broken certificate workarounds when
3736 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3737 keyUsage extension present. Don't accept CRLs with unhandled critical
3738 extensions: since verify currently doesn't process CRL extensions this
3739 rejects a CRL with *any* critical extensions. Add new verify error codes
3743 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3744 A clarification of RFC2560 will require the use of OCTET STRINGs and
3745 some implementations cannot handle the current raw format. Since OpenSSL
3746 copies and compares OCSP nonces as opaque blobs without any attempt at
3747 parsing them this should not create any compatibility issues.
3750 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3751 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3752 this HMAC (and other) operations are several times slower than OpenSSL
3756 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3757 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3759 *) Use the correct content when signing type "other".
3762 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3764 *) Fix various bugs revealed by running the NISCC test suite:
3766 Stop out of bounds reads in the ASN1 code when presented with
3767 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3769 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3771 If verify callback ignores invalid public key errors don't try to check
3772 certificate signature with the NULL public key.
3776 *) New -ignore_err option in ocsp application to stop the server
3777 exiting on the first error in a request.
3780 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3781 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3785 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3786 extra data after the compression methods not only for TLS 1.0
3787 but also for SSL 3.0 (as required by the specification).
3788 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3790 *) Change X509_certificate_type() to mark the key as exported/exportable
3791 when it's 512 *bits* long, not 512 bytes.
3794 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3795 blocks during encryption.
3798 *) Various fixes to base64 BIO and non blocking I/O. On write
3799 flushes were not handled properly if the BIO retried. On read
3800 data was not being buffered properly and had various logic bugs.
3801 This also affects blocking I/O when the data being decoded is a
3805 *) Various S/MIME bugfixes and compatibility changes:
3806 output correct application/pkcs7 MIME type if
3807 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3808 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3809 of files as .eml work). Correctly handle very long lines in MIME
3813 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3815 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3816 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3817 a protocol version number mismatch like a decryption error
3818 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3821 *) Turn on RSA blinding by default in the default implementation
3822 to avoid a timing attack. Applications that don't want it can call
3823 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3824 They would be ill-advised to do so in most cases.
3825 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3827 *) Change RSA blinding code so that it works when the PRNG is not
3828 seeded (in this case, the secret RSA exponent is abused as
3829 an unpredictable seed -- if it is not unpredictable, there
3830 is no point in blinding anyway). Make RSA blinding thread-safe
3831 by remembering the creator's thread ID in rsa->blinding and
3832 having all other threads use local one-time blinding factors
3833 (this requires more computation than sharing rsa->blinding, but
3834 avoids excessive locking; and if an RSA object is not shared
3835 between threads, blinding will still be very fast).
3838 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3839 ENGINE as defaults for all supported algorithms irrespective of
3840 the 'flags' parameter. 'flags' is now honoured, so applications
3841 should make sure they are passing it correctly.
3844 *) Target "mingw" now allows native Windows code to be generated in
3845 the Cygwin environment as well as with the MinGW compiler.
3848 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3850 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3851 via timing by performing a MAC computation even if incorrrect
3852 block cipher padding has been found. This is a countermeasure
3853 against active attacks where the attacker has to distinguish
3854 between bad padding and a MAC verification error. (CVE-2003-0078)
3856 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3857 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3858 Martin Vuagnoux (EPFL, Ilion)]
3860 *) Make the no-err option work as intended. The intention with no-err
3861 is not to have the whole error stack handling routines removed from
3862 libcrypto, it's only intended to remove all the function name and
3863 reason texts, thereby removing some of the footprint that may not
3864 be interesting if those errors aren't displayed anyway.
3866 NOTE: it's still possible for any application or module to have it's
3867 own set of error texts inserted. The routines are there, just not
3868 used by default when no-err is given.
3871 *) Add support for FreeBSD on IA64.
3872 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3874 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3875 Kerberos function mit_des_cbc_cksum(). Before this change,
3876 the value returned by DES_cbc_cksum() was like the one from
3877 mit_des_cbc_cksum(), except the bytes were swapped.
3878 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3880 *) Allow an application to disable the automatic SSL chain building.
3881 Before this a rather primitive chain build was always performed in
3882 ssl3_output_cert_chain(): an application had no way to send the
3883 correct chain if the automatic operation produced an incorrect result.
3885 Now the chain builder is disabled if either:
3887 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3889 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3891 The reasoning behind this is that an application would not want the
3892 auto chain building to take place if extra chain certificates are
3893 present and it might also want a means of sending no additional
3894 certificates (for example the chain has two certificates and the
3898 *) Add the possibility to build without the ENGINE framework.
3899 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3901 *) Under Win32 gmtime() can return NULL: check return value in
3902 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3905 *) DSA routines: under certain error conditions uninitialized BN objects
3906 could be freed. Solution: make sure initialization is performed early
3907 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3908 Nils Larsch <nla@trustcenter.de> via PR#459)
3911 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3912 checked on reconnect on the client side, therefore session resumption
3913 could still fail with a "ssl session id is different" error. This
3914 behaviour is masked when SSL_OP_ALL is used due to
3915 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3916 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3917 followup to PR #377.
3920 *) IA-32 assembler support enhancements: unified ELF targets, support
3921 for SCO/Caldera platforms, fix for Cygwin shared build.
3924 *) Add support for FreeBSD on sparc64. As a consequence, support for
3925 FreeBSD on non-x86 processors is separate from x86 processors on
3926 the config script, much like the NetBSD support.
3927 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3929 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3931 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3934 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3935 code (06) was taken as the first octet of the session ID and the last
3936 octet was ignored consequently. As a result SSLv2 client side session
3937 caching could not have worked due to the session ID mismatch between
3939 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3943 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3944 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3948 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3949 seems that in spite of existing for more than a year, many application
3950 author have done nothing to provide the necessary callbacks, which
3951 means that this particular engine will not work properly anywhere.
3952 This is a very unfortunate situation which forces us, in the name
3953 of usability, to give the hw_ncipher.c a static lock, which is part
3955 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3956 appear in 0.9.8 or later. We EXPECT application authors to have
3957 dealt properly with this when 0.9.8 is released (unless we actually
3958 make such changes in the libcrypto locking code that changes will
3959 have to be made anyway).
3962 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3963 octets have been read, EOF or an error occurs. Without this change
3964 some truncated ASN1 structures will not produce an error.
3967 *) Disable Heimdal support, since it hasn't been fully implemented.
3968 Still give the possibility to force the use of Heimdal, but with
3969 warnings and a request that patches get sent to openssl-dev.
3972 *) Add the VC-CE target, introduce the WINCE sysname, and add
3973 INSTALL.WCE and appropriate conditionals to make it build.
3974 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3976 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3977 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3978 edit numbers of the version.
3979 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3981 *) Introduce safe string copy and catenation functions
3982 (BUF_strlcpy() and BUF_strlcat()).
3983 [Ben Laurie (CHATS) and Richard Levitte]
3985 *) Avoid using fixed-size buffers for one-line DNs.
3986 [Ben Laurie (CHATS)]
3988 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3989 resizing buffers containing secrets, and use where appropriate.
3990 [Ben Laurie (CHATS)]
3992 *) Avoid using fixed size buffers for configuration file location.
3993 [Ben Laurie (CHATS)]
3995 *) Avoid filename truncation for various CA files.
3996 [Ben Laurie (CHATS)]
3998 *) Use sizeof in preference to magic numbers.
3999 [Ben Laurie (CHATS)]
4001 *) Avoid filename truncation in cert requests.
4002 [Ben Laurie (CHATS)]
4004 *) Add assertions to check for (supposedly impossible) buffer
4006 [Ben Laurie (CHATS)]
4008 *) Don't cache truncated DNS entries in the local cache (this could
4009 potentially lead to a spoofing attack).
4010 [Ben Laurie (CHATS)]
4012 *) Fix various buffers to be large enough for hex/decimal
4013 representations in a platform independent manner.
4014 [Ben Laurie (CHATS)]
4016 *) Add CRYPTO_realloc_clean() to avoid information leakage when
4017 resizing buffers containing secrets, and use where appropriate.
4018 [Ben Laurie (CHATS)]
4020 *) Add BIO_indent() to avoid much slightly worrying code to do
4022 [Ben Laurie (CHATS)]
4024 *) Convert sprintf()/BIO_puts() to BIO_printf().
4025 [Ben Laurie (CHATS)]
4027 *) buffer_gets() could terminate with the buffer only half
4029 [Ben Laurie (CHATS)]
4031 *) Add assertions to prevent user-supplied crypto functions from
4032 overflowing internal buffers by having large block sizes, etc.
4033 [Ben Laurie (CHATS)]
4035 *) New OPENSSL_assert() macro (similar to assert(), but enabled
4037 [Ben Laurie (CHATS)]
4039 *) Eliminate unused copy of key in RC4.
4040 [Ben Laurie (CHATS)]
4042 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
4043 [Ben Laurie (CHATS)]
4045 *) Fix off-by-one error in EGD path.
4046 [Ben Laurie (CHATS)]
4048 *) If RANDFILE path is too long, ignore instead of truncating.
4049 [Ben Laurie (CHATS)]
4051 *) Eliminate unused and incorrectly sized X.509 structure
4053 [Ben Laurie (CHATS)]
4055 *) Eliminate unused and dangerous function knumber().
4056 [Ben Laurie (CHATS)]
4058 *) Eliminate unused and dangerous structure, KSSL_ERR.
4059 [Ben Laurie (CHATS)]
4061 *) Protect against overlong session ID context length in an encoded
4062 session object. Since these are local, this does not appear to be
4064 [Ben Laurie (CHATS)]
4066 *) Change from security patch (see 0.9.6e below) that did not affect
4067 the 0.9.6 release series:
4069 Remote buffer overflow in SSL3 protocol - an attacker could
4070 supply an oversized master key in Kerberos-enabled versions.
4072 [Ben Laurie (CHATS)]
4074 *) Change the SSL kerb5 codes to match RFC 2712.
4077 *) Make -nameopt work fully for req and add -reqopt switch.
4078 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
4080 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
4081 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
4083 *) Make sure tests can be performed even if the corresponding algorithms
4084 have been removed entirely. This was also the last step to make
4085 OpenSSL compilable with DJGPP under all reasonable conditions.
4086 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
4088 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
4089 to allow version independent disabling of normally unselected ciphers,
4090 which may be activated as a side-effect of selecting a single cipher.
4092 (E.g., cipher list string "RSA" enables ciphersuites that are left
4093 out of "ALL" because they do not provide symmetric encryption.
4094 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
4095 [Lutz Jaenicke, Bodo Moeller]
4097 *) Add appropriate support for separate platform-dependent build
4098 directories. The recommended way to make a platform-dependent
4099 build directory is the following (tested on Linux), maybe with
4102 # Place yourself outside of the OpenSSL source tree. In
4103 # this example, the environment variable OPENSSL_SOURCE
4104 # is assumed to contain the absolute OpenSSL source directory.
4105 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
4106 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
4107 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
4108 mkdir -p `dirname $F`
4109 ln -s $OPENSSL_SOURCE/$F $F
4112 To be absolutely sure not to disturb the source tree, a "make clean"
4113 is a good thing. If it isn't successfull, don't worry about it,
4114 it probably means the source directory is very clean.
4117 *) Make sure any ENGINE control commands make local copies of string
4118 pointers passed to them whenever necessary. Otherwise it is possible
4119 the caller may have overwritten (or deallocated) the original string
4120 data when a later ENGINE operation tries to use the stored values.
4121 [Götz Babin-Ebell <babinebell@trustcenter.de>]
4123 *) Improve diagnostics in file reading and command-line digests.
4124 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
4126 *) Add AES modes CFB and OFB to the object database. Correct an
4127 error in AES-CFB decryption.
4130 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
4131 allows existing EVP_CIPHER_CTX structures to be reused after
4132 calling EVP_*Final(). This behaviour is used by encryption
4133 BIOs and some applications. This has the side effect that
4134 applications must explicitly clean up cipher contexts with
4135 EVP_CIPHER_CTX_cleanup() or they will leak memory.
4138 *) Check the values of dna and dnb in bn_mul_recursive before calling
4139 bn_mul_comba (a non zero value means the a or b arrays do not contain
4140 n2 elements) and fallback to bn_mul_normal if either is not zero.
4143 *) Fix escaping of non-ASCII characters when using the -subj option
4144 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
4147 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
4148 form for "surname", serialNumber has no short form.
4149 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
4150 therefore remove "mail" short name for "internet 7".
4151 The OID for unique identifiers in X509 certificates is
4152 x500UniqueIdentifier, not uniqueIdentifier.
4153 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
4156 *) Add an "init" command to the ENGINE config module and auto initialize
4157 ENGINEs. Without any "init" command the ENGINE will be initialized
4158 after all ctrl commands have been executed on it. If init=1 the
4159 ENGINE is initailized at that point (ctrls before that point are run
4160 on the uninitialized ENGINE and after on the initialized one). If
4161 init=0 then the ENGINE will not be iniatialized at all.
4164 *) Fix the 'app_verify_callback' interface so that the user-defined
4165 argument is actually passed to the callback: In the
4166 SSL_CTX_set_cert_verify_callback() prototype, the callback
4167 declaration has been changed from
4170 int (*cb)(X509_STORE_CTX *,void *);
4171 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
4172 i=s->ctx->app_verify_callback(&ctx)
4173 has been changed into
4174 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
4176 To update applications using SSL_CTX_set_cert_verify_callback(),
4177 a dummy argument can be added to their callback functions.
4178 [D. K. Smetters <smetters@parc.xerox.com>]
4180 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
4181 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
4183 *) Add and OPENSSL_LOAD_CONF define which will cause
4184 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
4185 This allows older applications to transparently support certain
4186 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
4187 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
4188 load the config file and OPENSSL_add_all_algorithms_conf() which will
4189 always load it have also been added.
4192 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4193 Adjust NIDs and EVP layer.
4194 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4196 *) Config modules support in openssl utility.
4198 Most commands now load modules from the config file,
4199 though in a few (such as version) this isn't done
4200 because it couldn't be used for anything.
4202 In the case of ca and req the config file used is
4203 the same as the utility itself: that is the -config
4204 command line option can be used to specify an
4208 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4209 use "openssl_conf" if filename is NULL use default openssl config file.
4212 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4213 config section name. Add a new flag to tolerate a missing config file
4214 and move code to CONF_modules_load_file().
4217 *) Support for crypto accelerator cards from Accelerated Encryption
4218 Processing, www.aep.ie. (Use engine 'aep')
4219 The support was copied from 0.9.6c [engine] and adapted/corrected
4220 to work with the new engine framework.
4221 [AEP Inc. and Richard Levitte]
4223 *) Support for SureWare crypto accelerator cards from Baltimore
4224 Technologies. (Use engine 'sureware')
4225 The support was copied from 0.9.6c [engine] and adapted
4226 to work with the new engine framework.
4229 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4230 make the newer ENGINE framework commands for the CHIL engine work.
4231 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4233 *) Make it possible to produce shared libraries on ReliantUNIX.
4234 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4236 *) Add the configuration target debug-linux-ppro.
4237 Make 'openssl rsa' use the general key loading routines
4238 implemented in apps.c, and make those routines able to
4239 handle the key format FORMAT_NETSCAPE and the variant
4241 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4243 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4244 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4246 *) Add -keyform to rsautl, and document -engine.
4247 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4249 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4250 BIO_R_NO_SUCH_FILE error code rather than the generic
4251 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4254 *) Add new functions
4256 ERR_peek_last_error_line
4257 ERR_peek_last_error_line_data.
4258 These are similar to
4261 ERR_peek_error_line_data,
4262 but report on the latest error recorded rather than the first one
4263 still in the error queue.
4264 [Ben Laurie, Bodo Moeller]
4266 *) default_algorithms option in ENGINE config module. This allows things
4268 default_algorithms = ALL
4269 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4272 *) Prelminary ENGINE config module.
4275 *) New experimental application configuration code.
4278 *) Change the AES code to follow the same name structure as all other
4279 symmetric ciphers, and behave the same way. Move everything to
4280 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4281 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4283 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4284 [Ben Laurie and Theo de Raadt]
4286 *) Add option to output public keys in req command.
4287 [Massimiliano Pala madwolf@openca.org]
4289 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4290 (up to about 10% better than before for P-192 and P-224).
4293 *) New functions/macros
4295 SSL_CTX_set_msg_callback(ctx, cb)
4296 SSL_CTX_set_msg_callback_arg(ctx, arg)
4297 SSL_set_msg_callback(ssl, cb)
4298 SSL_set_msg_callback_arg(ssl, arg)
4300 to request calling a callback function
4302 void cb(int write_p, int version, int content_type,
4303 const void *buf, size_t len, SSL *ssl, void *arg)
4305 whenever a protocol message has been completely received
4306 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4307 protocol version according to which the SSL library interprets
4308 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4309 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4310 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4311 specification (change_cipher_spec(20), alert(21), handshake(22)).
4312 'buf' and 'len' point to the actual message, 'ssl' to the
4313 SSL object, and 'arg' is the application-defined value set by
4314 SSL[_CTX]_set_msg_callback_arg().
4316 'openssl s_client' and 'openssl s_server' have new '-msg' options
4317 to enable a callback that displays all protocol messages.
4320 *) Change the shared library support so shared libraries are built as
4321 soon as the corresponding static library is finished, and thereby get
4322 openssl and the test programs linked against the shared library.
4323 This still only happens when the keyword "shard" has been given to
4324 the configuration scripts.
4326 NOTE: shared library support is still an experimental thing, and
4327 backward binary compatibility is still not guaranteed.
4328 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
4330 *) Add support for Subject Information Access extension.
4331 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4333 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
4334 additional bytes when new memory had to be allocated, not just
4335 when reusing an existing buffer.
4338 *) New command line and configuration option 'utf8' for the req command.
4339 This allows field values to be specified as UTF8 strings.
4342 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
4343 runs for the former and machine-readable output for the latter.
4346 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
4347 of the e-mail address in the DN (i.e., it will go into a certificate
4348 extension only). The new configuration file option 'email_in_dn = no'
4349 has the same effect.
4350 [Massimiliano Pala madwolf@openca.org]
4352 *) Change all functions with names starting with des_ to be starting
4353 with DES_ instead. Add wrappers that are compatible with libdes,
4354 but are named _ossl_old_des_*. Finally, add macros that map the
4355 des_* symbols to the corresponding _ossl_old_des_* if libdes
4356 compatibility is desired. If OpenSSL 0.9.6c compatibility is
4357 desired, the des_* symbols will be mapped to DES_*, with one
4360 Since we provide two compatibility mappings, the user needs to
4361 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
4362 compatibility is desired. The default (i.e., when that macro
4363 isn't defined) is OpenSSL 0.9.6c compatibility.
4365 There are also macros that enable and disable the support of old
4366 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
4367 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
4368 are defined, the default will apply: to support the old des routines.
4370 In either case, one must include openssl/des.h to get the correct
4371 definitions. Do not try to just include openssl/des_old.h, that
4374 NOTE: This is a major break of an old API into a new one. Software
4375 authors are encouraged to switch to the DES_ style functions. Some
4376 time in the future, des_old.h and the libdes compatibility functions
4377 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
4378 default), and then completely removed.
4381 *) Test for certificates which contain unsupported critical extensions.
4382 If such a certificate is found during a verify operation it is
4383 rejected by default: this behaviour can be overridden by either
4384 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
4385 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
4386 X509_supported_extension() has also been added which returns 1 if a
4387 particular extension is supported.
4390 *) Modify the behaviour of EVP cipher functions in similar way to digests
4391 to retain compatibility with existing code.
4394 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
4395 compatibility with existing code. In particular the 'ctx' parameter does
4396 not have to be to be initialized before the call to EVP_DigestInit() and
4397 it is tidied up after a call to EVP_DigestFinal(). New function
4398 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
4399 EVP_MD_CTX_copy() changed to not require the destination to be
4400 initialized valid and new function EVP_MD_CTX_copy_ex() added which
4401 requires the destination to be valid.
4403 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
4404 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
4407 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
4408 so that complete 'Handshake' protocol structures are kept in memory
4409 instead of overwriting 'msg_type' and 'length' with 'body' data.
4412 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
4413 [Massimo Santin via Richard Levitte]
4415 *) Major restructuring to the underlying ENGINE code. This includes
4416 reduction of linker bloat, separation of pure "ENGINE" manipulation
4417 (initialisation, etc) from functionality dealing with implementations
4418 of specific crypto iterfaces. This change also introduces integrated
4419 support for symmetric ciphers and digest implementations - so ENGINEs
4420 can now accelerate these by providing EVP_CIPHER and EVP_MD
4421 implementations of their own. This is detailed in crypto/engine/README
4422 as it couldn't be adequately described here. However, there are a few
4423 API changes worth noting - some RSA, DSA, DH, and RAND functions that
4424 were changed in the original introduction of ENGINE code have now
4425 reverted back - the hooking from this code to ENGINE is now a good
4426 deal more passive and at run-time, operations deal directly with
4427 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
4428 dereferencing through an ENGINE pointer any more. Also, the ENGINE
4429 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
4430 they were not being used by the framework as there is no concept of a
4431 BIGNUM_METHOD and they could not be generalised to the new
4432 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
4433 ENGINE_cpy() has been removed as it cannot be consistently defined in
4437 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
4440 *) Change mkdef.pl to sort symbols that get the same entry number,
4441 and make sure the automatically generated functions ERR_load_*
4442 become part of libeay.num as well.
4445 *) New function SSL_renegotiate_pending(). This returns true once
4446 renegotiation has been requested (either SSL_renegotiate() call
4447 or HelloRequest/ClientHello receveived from the peer) and becomes
4448 false once a handshake has been completed.
4449 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
4450 sends a HelloRequest, but does not ensure that a handshake takes
4451 place. SSL_renegotiate_pending() is useful for checking if the
4452 client has followed the request.)
4455 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
4456 By default, clients may request session resumption even during
4457 renegotiation (if session ID contexts permit); with this option,
4458 session resumption is possible only in the first handshake.
4460 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
4461 more bits available for options that should not be part of
4462 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
4465 *) Add some demos for certificate and certificate request creation.
4468 *) Make maximum certificate chain size accepted from the peer application
4469 settable (SSL*_get/set_max_cert_list()), as proposed by
4470 "Douglas E. Engert" <deengert@anl.gov>.
4473 *) Add support for shared libraries for Unixware-7
4474 (Boyd Lynn Gerber <gerberb@zenez.com>).
4477 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
4478 be done prior to destruction. Use this to unload error strings from
4479 ENGINEs that load their own error strings. NB: This adds two new API
4480 functions to "get" and "set" this destroy handler in an ENGINE.
4483 *) Alter all existing ENGINE implementations (except "openssl" and
4484 "openbsd") to dynamically instantiate their own error strings. This
4485 makes them more flexible to be built both as statically-linked ENGINEs
4486 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
4487 Also, add stub code to each that makes building them as self-contained
4488 shared-libraries easier (see README.ENGINE).
4491 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
4492 implementations into applications that are completely implemented in
4493 self-contained shared-libraries. The "dynamic" ENGINE exposes control
4494 commands that can be used to configure what shared-library to load and
4495 to control aspects of the way it is handled. Also, made an update to
4496 the README.ENGINE file that brings its information up-to-date and
4497 provides some information and instructions on the "dynamic" ENGINE
4498 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
4501 *) Make it possible to unload ranges of ERR strings with a new
4502 "ERR_unload_strings" function.
4505 *) Add a copy() function to EVP_MD.
4508 *) Make EVP_MD routines take a context pointer instead of just the
4509 md_data void pointer.
4512 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
4513 that the digest can only process a single chunk of data
4514 (typically because it is provided by a piece of
4515 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
4516 is only going to provide a single chunk of data, and hence the
4517 framework needn't accumulate the data for oneshot drivers.
4520 *) As with "ERR", make it possible to replace the underlying "ex_data"
4521 functions. This change also alters the storage and management of global
4522 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
4523 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
4524 index counters. The API functions that use this state have been changed
4525 to take a "class_index" rather than pointers to the class's local STACK
4526 and counter, and there is now an API function to dynamically create new
4527 classes. This centralisation allows us to (a) plug a lot of the
4528 thread-safety problems that existed, and (b) makes it possible to clean
4529 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
4530 such data would previously have always leaked in application code and
4531 workarounds were in place to make the memory debugging turn a blind eye
4532 to it. Application code that doesn't use this new function will still
4533 leak as before, but their memory debugging output will announce it now
4534 rather than letting it slide.
4536 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
4537 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
4538 has a return value to indicate success or failure.
4541 *) Make it possible to replace the underlying "ERR" functions such that the
4542 global state (2 LHASH tables and 2 locks) is only used by the "default"
4543 implementation. This change also adds two functions to "get" and "set"
4544 the implementation prior to it being automatically set the first time
4545 any other ERR function takes place. Ie. an application can call "get",
4546 pass the return value to a module it has just loaded, and that module
4547 can call its own "set" function using that value. This means the
4548 module's "ERR" operations will use (and modify) the error state in the
4549 application and not in its own statically linked copy of OpenSSL code.
4552 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
4553 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
4554 the operation, and provides a more encapsulated way for external code
4555 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
4556 to use these functions rather than manually incrementing the counts.
4558 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
4561 *) Add EVP test program.
4564 *) Add symmetric cipher support to ENGINE. Expect the API to change!
4567 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
4568 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
4569 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
4570 These allow a CRL to be built without having to access X509_CRL fields
4571 directly. Modify 'ca' application to use new functions.
4574 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
4575 bug workarounds. Rollback attack detection is a security feature.
4576 The problem will only arise on OpenSSL servers when TLSv1 is not
4577 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
4578 Software authors not wanting to support TLSv1 will have special reasons
4579 for their choice and can explicitly enable this option.
4580 [Bodo Moeller, Lutz Jaenicke]
4582 *) Rationalise EVP so it can be extended: don't include a union of
4583 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
4584 (similar to those existing for EVP_CIPHER_CTX).
4589 EVP_MD_CTX_init(&md); /* new function call */
4590 EVP_DigestInit(&md, EVP_sha1());
4591 EVP_DigestUpdate(&md, in, len);
4592 EVP_DigestFinal(&md, out, NULL);
4593 EVP_MD_CTX_cleanup(&md); /* new function call */
4597 *) Make DES key schedule conform to the usual scheme, as well as
4598 correcting its structure. This means that calls to DES functions
4599 now have to pass a pointer to a des_key_schedule instead of a
4600 plain des_key_schedule (which was actually always a pointer
4603 des_key_schedule ks;
4605 des_set_key_checked(..., &ks);
4606 des_ncbc_encrypt(..., &ks, ...);
4608 (Note that a later change renames 'des_...' into 'DES_...'.)
4611 *) Initial reduction of linker bloat: the use of some functions, such as
4612 PEM causes large amounts of unused functions to be linked in due to
4613 poor organisation. For example pem_all.c contains every PEM function
4614 which has a knock on effect of linking in large amounts of (unused)
4615 ASN1 code. Grouping together similar functions and splitting unrelated
4616 functions prevents this.
4619 *) Cleanup of EVP macros.
4622 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
4623 correct _ecb suffix.
4626 *) Add initial OCSP responder support to ocsp application. The
4627 revocation information is handled using the text based index
4628 use by the ca application. The responder can either handle
4629 requests generated internally, supplied in files (for example
4630 via a CGI script) or using an internal minimal server.
4633 *) Add configuration choices to get zlib compression for TLS.
4636 *) Changes to Kerberos SSL for RFC 2712 compliance:
4637 1. Implemented real KerberosWrapper, instead of just using
4638 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
4639 2. Implemented optional authenticator field of KerberosWrapper.
4641 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
4642 and authenticator structs; see crypto/krb5/.
4644 Generalized Kerberos calls to support multiple Kerberos libraries.
4645 [Vern Staats <staatsvr@asc.hpc.mil>,
4646 Jeffrey Altman <jaltman@columbia.edu>
4647 via Richard Levitte]
4649 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
4650 already does with RSA. testdsa.h now has 'priv_key/pub_key'
4651 values for each of the key sizes rather than having just
4652 parameters (and 'speed' generating keys each time).
4655 *) Speed up EVP routines.
4658 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
4659 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
4660 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
4661 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
4663 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
4664 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
4665 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
4668 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
4670 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
4673 *) Added the OS2-EMX target.
4674 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
4676 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
4677 to support NCONF routines in extension code. New function CONF_set_nconf()
4678 to allow functions which take an NCONF to also handle the old LHASH
4679 structure: this means that the old CONF compatible routines can be
4680 retained (in particular wrt extensions) without having to duplicate the
4681 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
4684 *) Enhance the general user interface with mechanisms for inner control
4685 and with possibilities to have yes/no kind of prompts.
4688 *) Change all calls to low level digest routines in the library and
4689 applications to use EVP. Add missing calls to HMAC_cleanup() and
4690 don't assume HMAC_CTX can be copied using memcpy().
4691 [Verdon Walker <VWalker@novell.com>, Steve Henson]
4693 *) Add the possibility to control engines through control names but with
4694 arbitrary arguments instead of just a string.
4695 Change the key loaders to take a UI_METHOD instead of a callback
4696 function pointer. NOTE: this breaks binary compatibility with earlier
4697 versions of OpenSSL [engine].
4698 Adapt the nCipher code for these new conditions and add a card insertion
4702 *) Enhance the general user interface with mechanisms to better support
4703 dialog box interfaces, application-defined prompts, the possibility
4704 to use defaults (for example default passwords from somewhere else)
4705 and interrupts/cancellations.
4708 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
4709 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
4712 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
4713 tidy up some unnecessarily weird code in 'sk_new()').
4714 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
4716 *) Change the key loading routines for ENGINEs to use the same kind
4717 callback (pem_password_cb) as all other routines that need this
4721 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
4722 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
4723 than this minimum value is recommended.
4726 *) New random seeder for OpenVMS, using the system process statistics
4727 that are easily reachable.
4730 *) Windows apparently can't transparently handle global
4731 variables defined in DLLs. Initialisations such as:
4733 const ASN1_ITEM *it = &ASN1_INTEGER_it;
4735 wont compile. This is used by the any applications that need to
4736 declare their own ASN1 modules. This was fixed by adding the option
4737 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
4738 needed for static libraries under Win32.
4741 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
4742 setting of purpose and trust fields. New X509_STORE trust and
4743 purpose functions and tidy up setting in other SSL functions.
4746 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
4747 structure. These are inherited by X509_STORE_CTX when it is
4748 initialised. This allows various defaults to be set in the
4749 X509_STORE structure (such as flags for CRL checking and custom
4750 purpose or trust settings) for functions which only use X509_STORE_CTX
4751 internally such as S/MIME.
4753 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
4754 trust settings if they are not set in X509_STORE. This allows X509_STORE
4755 purposes and trust (in S/MIME for example) to override any set by default.
4757 Add command line options for CRL checking to smime, s_client and s_server
4761 *) Initial CRL based revocation checking. If the CRL checking flag(s)
4762 are set then the CRL is looked up in the X509_STORE structure and
4763 its validity and signature checked, then if the certificate is found
4764 in the CRL the verify fails with a revoked error.
4766 Various new CRL related callbacks added to X509_STORE_CTX structure.
4768 Command line options added to 'verify' application to support this.
4770 This needs some additional work, such as being able to handle multiple
4771 CRLs with different times, extension based lookup (rather than just
4772 by subject name) and ultimately more complete V2 CRL extension
4776 *) Add a general user interface API (crypto/ui/). This is designed
4777 to replace things like des_read_password and friends (backward
4778 compatibility functions using this new API are provided).
4779 The purpose is to remove prompting functions from the DES code
4780 section as well as provide for prompting through dialog boxes in
4781 a window system and the like.
4784 *) Add "ex_data" support to ENGINE so implementations can add state at a
4785 per-structure level rather than having to store it globally.
4788 *) Make it possible for ENGINE structures to be copied when retrieved by
4789 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
4790 This causes the "original" ENGINE structure to act like a template,
4791 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
4792 operational state can be localised to each ENGINE structure, despite the
4793 fact they all share the same "methods". New ENGINE structures returned in
4794 this case have no functional references and the return value is the single
4795 structural reference. This matches the single structural reference returned
4796 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4800 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4801 needs to match any other type at all we need to manually clear the
4805 *) Changes to the "openssl engine" utility to include;
4806 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4807 about an ENGINE's available control commands.
4808 - executing control commands from command line arguments using the
4809 '-pre' and '-post' switches. '-post' is only used if '-t' is
4810 specified and the ENGINE is successfully initialised. The syntax for
4811 the individual commands are colon-separated, for example;
4812 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4815 *) New dynamic control command support for ENGINEs. ENGINEs can now
4816 declare their own commands (numbers), names (strings), descriptions,
4817 and input types for run-time discovery by calling applications. A
4818 subset of these commands are implicitly classed as "executable"
4819 depending on their input type, and only these can be invoked through
4820 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
4821 can be based on user input, config files, etc). The distinction is
4822 that "executable" commands cannot return anything other than a boolean
4823 result and can only support numeric or string input, whereas some
4824 discoverable commands may only be for direct use through
4825 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
4826 pointers, or other custom uses. The "executable" commands are to
4827 support parameterisations of ENGINE behaviour that can be
4828 unambiguously defined by ENGINEs and used consistently across any
4829 OpenSSL-based application. Commands have been added to all the
4830 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
4831 control over shared-library paths without source code alterations.
4834 *) Changed all ENGINE implementations to dynamically allocate their
4835 ENGINEs rather than declaring them statically. Apart from this being
4836 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
4837 this also allows the implementations to compile without using the
4838 internal engine_int.h header.
4841 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
4842 'const' value. Any code that should be able to modify a RAND_METHOD
4843 should already have non-const pointers to it (ie. they should only
4844 modify their own ones).
4847 *) Made a variety of little tweaks to the ENGINE code.
4848 - "atalla" and "ubsec" string definitions were moved from header files
4849 to C code. "nuron" string definitions were placed in variables
4850 rather than hard-coded - allowing parameterisation of these values
4851 later on via ctrl() commands.
4852 - Removed unused "#if 0"'d code.
4853 - Fixed engine list iteration code so it uses ENGINE_free() to release
4854 structural references.
4855 - Constified the RAND_METHOD element of ENGINE structures.
4856 - Constified various get/set functions as appropriate and added
4857 missing functions (including a catch-all ENGINE_cpy that duplicates
4858 all ENGINE values onto a new ENGINE except reference counts/state).
4859 - Removed NULL parameter checks in get/set functions. Setting a method
4860 or function to NULL is a way of cancelling out a previously set
4861 value. Passing a NULL ENGINE parameter is just plain stupid anyway
4862 and doesn't justify the extra error symbols and code.
4863 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
4864 flags from engine_int.h to engine.h.
4865 - Changed prototypes for ENGINE handler functions (init(), finish(),
4866 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
4869 *) Implement binary inversion algorithm for BN_mod_inverse in addition
4870 to the algorithm using long division. The binary algorithm can be
4871 used only if the modulus is odd. On 32-bit systems, it is faster
4872 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
4873 roughly 5-15% for 256-bit moduli), so we use it only for moduli
4874 up to 450 bits. In 64-bit environments, the binary algorithm
4875 appears to be advantageous for much longer moduli; here we use it
4876 for moduli up to 2048 bits.
4879 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
4880 could not support the combine flag in choice fields.
4883 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
4884 extensions from a certificate request to the certificate.
4887 *) Allow multiple 'certopt' and 'nameopt' options to be separated
4888 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
4889 file: this allows the display of the certificate about to be
4890 signed to be customised, to allow certain fields to be included
4891 or excluded and extension details. The old system didn't display
4892 multicharacter strings properly, omitted fields not in the policy
4893 and couldn't display additional details such as extensions.
4896 *) Function EC_POINTs_mul for multiple scalar multiplication
4897 of an arbitrary number of elliptic curve points
4898 \sum scalars[i]*points[i],
4899 optionally including the generator defined for the EC_GROUP:
4900 scalar*generator + \sum scalars[i]*points[i].
4902 EC_POINT_mul is a simple wrapper function for the typical case
4903 that the point list has just one item (besides the optional
4907 *) First EC_METHODs for curves over GF(p):
4909 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
4910 operations and provides various method functions that can also
4911 operate with faster implementations of modular arithmetic.
4913 EC_GFp_mont_method() reuses most functions that are part of
4914 EC_GFp_simple_method, but uses Montgomery arithmetic.
4916 [Bodo Moeller; point addition and point doubling
4917 implementation directly derived from source code provided by
4918 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
4920 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
4921 crypto/ec/ec_lib.c):
4923 Curves are EC_GROUP objects (with an optional group generator)
4924 based on EC_METHODs that are built into the library.
4926 Points are EC_POINT objects based on EC_GROUP objects.
4928 Most of the framework would be able to handle curves over arbitrary
4929 finite fields, but as there are no obvious types for fields other
4930 than GF(p), some functions are limited to that for now.
4933 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
4934 that the file contains a complete HTTP response.
4937 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
4938 change the def and num file printf format specifier from "%-40sXXX"
4939 to "%-39s XXX". The latter will always guarantee a space after the
4940 field while the former will cause them to run together if the field
4941 is 40 of more characters long.
4944 *) Constify the cipher and digest 'method' functions and structures
4945 and modify related functions to take constant EVP_MD and EVP_CIPHER
4949 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
4950 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
4953 *) Modify EVP_Digest*() routines so they now return values. Although the
4954 internal software routines can never fail additional hardware versions
4958 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
4960 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
4961 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
4964 ERR_R_NESTED_ASN1_ERROR
4966 ERR_R_MISSING_ASN1_EOS
4967 were 4 .. 9, conflicting with
4968 ERR_LIB_RSA (= ERR_R_RSA_LIB)
4970 ERR_LIB_PEM (= ERR_R_PEM_LIB).
4971 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
4973 Add new error code 'ERR_R_INTERNAL_ERROR'.
4976 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
4980 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
4981 sets the subject name for a new request or supersedes the
4982 subject name in a given request. Formats that can be parsed are
4983 'CN=Some Name, OU=myOU, C=IT'
4985 'CN=Some Name/OU=myOU/C=IT'.
4987 Add options '-batch' and '-verbose' to 'openssl req'.
4988 [Massimiliano Pala <madwolf@hackmasters.net>]
4990 *) Introduce the possibility to access global variables through
4991 functions on platform were that's the best way to handle exporting
4992 global variables in shared libraries. To enable this functionality,
4993 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
4994 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
4995 is normally done by Configure or something similar).
4997 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
4998 in the source file (foo.c) like this:
5000 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
5001 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
5003 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
5004 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
5006 OPENSSL_DECLARE_GLOBAL(int,foo);
5007 #define foo OPENSSL_GLOBAL_REF(foo)
5008 OPENSSL_DECLARE_GLOBAL(double,bar);
5009 #define bar OPENSSL_GLOBAL_REF(bar)
5011 The #defines are very important, and therefore so is including the
5012 header file everywhere where the defined globals are used.
5014 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
5015 of ASN.1 items, but that structure is a bit different.
5017 The largest change is in util/mkdef.pl which has been enhanced with
5018 better and easier to understand logic to choose which symbols should
5019 go into the Windows .def files as well as a number of fixes and code
5020 cleanup (among others, algorithm keywords are now sorted
5021 lexicographically to avoid constant rewrites).
5024 *) In BN_div() keep a copy of the sign of 'num' before writing the
5025 result to 'rm' because if rm==num the value will be overwritten
5026 and produce the wrong result if 'num' is negative: this caused
5027 problems with BN_mod() and BN_nnmod().
5030 *) Function OCSP_request_verify(). This checks the signature on an
5031 OCSP request and verifies the signer certificate. The signer
5032 certificate is just checked for a generic purpose and OCSP request
5036 *) Add OCSP_check_validity() function to check the validity of OCSP
5037 responses. OCSP responses are prepared in real time and may only
5038 be a few seconds old. Simply checking that the current time lies
5039 between thisUpdate and nextUpdate max reject otherwise valid responses
5040 caused by either OCSP responder or client clock inaccuracy. Instead
5041 we allow thisUpdate and nextUpdate to fall within a certain period of
5042 the current time. The age of the response can also optionally be
5043 checked. Two new options -validity_period and -status_age added to
5047 *) If signature or public key algorithm is unrecognized print out its
5048 OID rather that just UNKNOWN.
5051 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
5052 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
5053 ID to be generated from the issuer certificate alone which can then be
5054 passed to OCSP_id_issuer_cmp().
5057 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
5058 ASN1 modules to export functions returning ASN1_ITEM pointers
5059 instead of the ASN1_ITEM structures themselves. This adds several
5060 new macros which allow the underlying ASN1 function/structure to
5061 be accessed transparently. As a result code should not use ASN1_ITEM
5062 references directly (such as &X509_it) but instead use the relevant
5063 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
5064 use of the new ASN1 code on platforms where exporting structures
5065 is problematical (for example in shared libraries) but exporting
5066 functions returning pointers to structures is not.
5069 *) Add support for overriding the generation of SSL/TLS session IDs.
5070 These callbacks can be registered either in an SSL_CTX or per SSL.
5071 The purpose of this is to allow applications to control, if they wish,
5072 the arbitrary values chosen for use as session IDs, particularly as it
5073 can be useful for session caching in multiple-server environments. A
5074 command-line switch for testing this (and any client code that wishes
5075 to use such a feature) has been added to "s_server".
5076 [Geoff Thorpe, Lutz Jaenicke]
5078 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
5079 of the form '#if defined(...) || defined(...) || ...' and
5080 '#if !defined(...) && !defined(...) && ...'. This also avoids
5081 the growing number of special cases it was previously handling.
5084 *) Make all configuration macros available for application by making
5085 sure they are available in opensslconf.h, by giving them names starting
5086 with "OPENSSL_" to avoid conflicts with other packages and by making
5087 sure e_os2.h will cover all platform-specific cases together with
5089 Additionally, it is now possible to define configuration/platform-
5090 specific names (called "system identities"). In the C code, these
5091 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
5092 macro with the name beginning with "OPENSSL_SYS_", which is determined
5093 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
5097 *) New option -set_serial to 'req' and 'x509' this allows the serial
5098 number to use to be specified on the command line. Previously self
5099 signed certificates were hard coded with serial number 0 and the
5100 CA options of 'x509' had to use a serial number in a file which was
5104 *) New options to 'ca' utility to support V2 CRL entry extensions.
5105 Currently CRL reason, invalidity date and hold instruction are
5106 supported. Add new CRL extensions to V3 code and some new objects.
5109 *) New function EVP_CIPHER_CTX_set_padding() this is used to
5110 disable standard block padding (aka PKCS#5 padding) in the EVP
5111 API, which was previously mandatory. This means that the data is
5112 not padded in any way and so the total length much be a multiple
5113 of the block size, otherwise an error occurs.
5116 *) Initial (incomplete) OCSP SSL support.
5119 *) New function OCSP_parse_url(). This splits up a URL into its host,
5120 port and path components: primarily to parse OCSP URLs. New -url
5121 option to ocsp utility.
5124 *) New nonce behavior. The return value of OCSP_check_nonce() now
5125 reflects the various checks performed. Applications can decide
5126 whether to tolerate certain situations such as an absent nonce
5127 in a response when one was present in a request: the ocsp application
5128 just prints out a warning. New function OCSP_add1_basic_nonce()
5129 this is to allow responders to include a nonce in a response even if
5130 the request is nonce-less.
5133 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
5134 skipped when using openssl x509 multiple times on a single input file,
5135 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
5138 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
5139 set string type: to handle setting ASN1_TIME structures. Fix ca
5140 utility to correctly initialize revocation date of CRLs.
5143 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
5144 the clients preferred ciphersuites and rather use its own preferences.
5145 Should help to work around M$ SGC (Server Gated Cryptography) bug in
5146 Internet Explorer by ensuring unchanged hash method during stepup.
5147 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
5150 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
5151 to aes and add a new 'exist' option to print out symbols that don't
5155 *) Additional options to ocsp utility to allow flags to be set and
5156 additional certificates supplied.
5159 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
5160 OCSP client a number of certificate to only verify the response
5164 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
5165 handle the new API. Currently only ECB, CBC modes supported. Add new
5168 Add TLS AES ciphersuites as described in RFC3268, "Advanced
5169 Encryption Standard (AES) Ciphersuites for Transport Layer
5170 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
5171 not enabled by default and were not part of the "ALL" ciphersuite
5172 alias because they were not yet official; they could be
5173 explicitly requested by specifying the "AESdraft" ciphersuite
5174 group alias. In the final release of OpenSSL 0.9.7, the group
5175 alias is called "AES" and is part of "ALL".)
5176 [Ben Laurie, Steve Henson, Bodo Moeller]
5178 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
5179 request to response.
5182 *) Functions for OCSP responders. OCSP_request_onereq_count(),
5183 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
5184 extract information from a certificate request. OCSP_response_create()
5185 creates a response and optionally adds a basic response structure.
5186 OCSP_basic_add1_status() adds a complete single response to a basic
5187 response and returns the OCSP_SINGLERESP structure just added (to allow
5188 extensions to be included for example). OCSP_basic_add1_cert() adds a
5189 certificate to a basic response and OCSP_basic_sign() signs a basic
5190 response with various flags. New helper functions ASN1_TIME_check()
5191 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
5192 (converts ASN1_TIME to GeneralizedTime).
5195 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
5196 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
5197 structure from a certificate. X509_pubkey_digest() digests the public_key
5198 contents: this is used in various key identifiers.
5201 *) Make sk_sort() tolerate a NULL argument.
5202 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
5204 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
5205 passed by the function are trusted implicitly. If any of them signed the
5206 response then it is assumed to be valid and is not verified.
5209 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
5210 to data. This was previously part of the PKCS7 ASN1 code. This
5211 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
5212 [Steve Henson, reported by Kenneth R. Robinette
5213 <support@securenetterm.com>]
5215 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
5216 routines: without these tracing memory leaks is very painful.
5217 Fix leaks in PKCS12 and PKCS7 routines.
5220 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
5221 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
5222 effectively meant GeneralizedTime would never be used. Now it
5223 is initialised to -1 but X509_time_adj() now has to check the value
5224 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
5225 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
5226 [Steve Henson, reported by Kenneth R. Robinette
5227 <support@securenetterm.com>]
5229 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
5230 result in a zero length in the ASN1_INTEGER structure which was
5231 not consistent with the structure when d2i_ASN1_INTEGER() was used
5232 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
5233 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
5234 where it did not print out a minus for negative ASN1_INTEGER.
5237 *) Add summary printout to ocsp utility. The various functions which
5238 convert status values to strings have been renamed to:
5239 OCSP_response_status_str(), OCSP_cert_status_str() and
5240 OCSP_crl_reason_str() and are no longer static. New options
5241 to verify nonce values and to disable verification. OCSP response
5242 printout format cleaned up.
5245 *) Add additional OCSP certificate checks. These are those specified
5246 in RFC2560. This consists of two separate checks: the CA of the
5247 certificate being checked must either be the OCSP signer certificate
5248 or the issuer of the OCSP signer certificate. In the latter case the
5249 OCSP signer certificate must contain the OCSP signing extended key
5250 usage. This check is performed by attempting to match the OCSP
5251 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
5252 in the OCSP_CERTID structures of the response.
5255 *) Initial OCSP certificate verification added to OCSP_basic_verify()
5256 and related routines. This uses the standard OpenSSL certificate
5257 verify routines to perform initial checks (just CA validity) and
5258 to obtain the certificate chain. Then additional checks will be
5259 performed on the chain. Currently the root CA is checked to see
5260 if it is explicitly trusted for OCSP signing. This is used to set
5261 a root CA as a global signing root: that is any certificate that
5262 chains to that CA is an acceptable OCSP signing certificate.
5265 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
5266 extensions from a separate configuration file.
5267 As when reading extensions from the main configuration file,
5268 the '-extensions ...' option may be used for specifying the
5270 [Massimiliano Pala <madwolf@comune.modena.it>]
5272 *) New OCSP utility. Allows OCSP requests to be generated or
5273 read. The request can be sent to a responder and the output
5274 parsed, outputed or printed in text form. Not complete yet:
5275 still needs to check the OCSP response validity.
5278 *) New subcommands for 'openssl ca':
5279 'openssl ca -status <serial>' prints the status of the cert with
5280 the given serial number (according to the index file).
5281 'openssl ca -updatedb' updates the expiry status of certificates
5283 [Massimiliano Pala <madwolf@comune.modena.it>]
5285 *) New '-newreq-nodes' command option to CA.pl. This is like
5286 '-newreq', but calls 'openssl req' with the '-nodes' option
5287 so that the resulting key is not encrypted.
5288 [Damien Miller <djm@mindrot.org>]
5290 *) New configuration for the GNU Hurd.
5291 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
5293 *) Initial code to implement OCSP basic response verify. This
5294 is currently incomplete. Currently just finds the signer's
5295 certificate and verifies the signature on the response.
5298 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
5299 value of OPENSSLDIR. This is available via the new '-d' option
5300 to 'openssl version', and is also included in 'openssl version -a'.
5303 *) Allowing defining memory allocation callbacks that will be given
5304 file name and line number information in additional arguments
5305 (a const char* and an int). The basic functionality remains, as
5306 well as the original possibility to just replace malloc(),
5307 realloc() and free() by functions that do not know about these
5308 additional arguments. To register and find out the current
5309 settings for extended allocation functions, the following
5310 functions are provided:
5312 CRYPTO_set_mem_ex_functions
5313 CRYPTO_set_locked_mem_ex_functions
5314 CRYPTO_get_mem_ex_functions
5315 CRYPTO_get_locked_mem_ex_functions
5317 These work the same way as CRYPTO_set_mem_functions and friends.
5318 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
5319 extended allocation function is enabled.
5320 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
5321 a conventional allocation function is enabled.
5322 [Richard Levitte, Bodo Moeller]
5324 *) Finish off removing the remaining LHASH function pointer casts.
5325 There should no longer be any prototype-casting required when using
5326 the LHASH abstraction, and any casts that remain are "bugs". See
5327 the callback types and macros at the head of lhash.h for details
5328 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
5331 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
5332 If /dev/[u]random devices are not available or do not return enough
5333 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
5335 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
5336 /etc/entropy will be queried once each in this sequence, quering stops
5337 when enough entropy was collected without querying more sockets.
5340 *) Change the Unix RAND_poll() variant to be able to poll several
5341 random devices, as specified by DEVRANDOM, until a sufficient amount
5342 of data has been collected. We spend at most 10 ms on each file
5343 (select timeout) and read in non-blocking mode. DEVRANDOM now
5344 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
5345 (previously it was just the string "/dev/urandom"), so on typical
5346 platforms the 10 ms delay will never occur.
5347 Also separate out the Unix variant to its own file, rand_unix.c.
5348 For VMS, there's a currently-empty rand_vms.c.
5351 *) Move OCSP client related routines to ocsp_cl.c. These
5352 provide utility functions which an application needing
5353 to issue a request to an OCSP responder and analyse the
5354 response will typically need: as opposed to those which an
5355 OCSP responder itself would need which will be added later.
5357 OCSP_request_sign() signs an OCSP request with an API similar
5358 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
5359 response. OCSP_response_get1_basic() extracts basic response
5360 from response. OCSP_resp_find_status(): finds and extracts status
5361 information from an OCSP_CERTID structure (which will be created
5362 when the request structure is built). These are built from lower
5363 level functions which work on OCSP_SINGLERESP structures but
5364 wont normally be used unless the application wishes to examine
5365 extensions in the OCSP response for example.
5367 Replace nonce routines with a pair of functions.
5368 OCSP_request_add1_nonce() adds a nonce value and optionally
5369 generates a random value. OCSP_check_nonce() checks the
5370 validity of the nonce in an OCSP response.
5373 *) Change function OCSP_request_add() to OCSP_request_add0_id().
5374 This doesn't copy the supplied OCSP_CERTID and avoids the
5375 need to free up the newly created id. Change return type
5376 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
5377 This can then be used to add extensions to the request.
5378 Deleted OCSP_request_new(), since most of its functionality
5379 is now in OCSP_REQUEST_new() (and the case insensitive name
5380 clash) apart from the ability to set the request name which
5381 will be added elsewhere.
5384 *) Update OCSP API. Remove obsolete extensions argument from
5385 various functions. Extensions are now handled using the new
5386 OCSP extension code. New simple OCSP HTTP function which
5387 can be used to send requests and parse the response.
5390 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
5391 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
5392 uses the special reorder version of SET OF to sort the attributes
5393 and reorder them to match the encoded order. This resolves a long
5394 standing problem: a verify on a PKCS7 structure just after signing
5395 it used to fail because the attribute order did not match the
5396 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
5397 it uses the received order. This is necessary to tolerate some broken
5398 software that does not order SET OF. This is handled by encoding
5399 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
5400 to produce the required SET OF.
5403 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
5404 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
5405 files to get correct declarations of the ASN.1 item variables.
5408 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
5409 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
5410 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
5411 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
5412 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
5413 ASN1_ITEM and no wrapper functions.
5416 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
5417 replace the old function pointer based I/O routines. Change most of
5418 the *_d2i_bio() and *_d2i_fp() functions to use these.
5421 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
5422 lines, recognice more "algorithms" that can be deselected, and make
5423 it complain about algorithm deselection that isn't recognised.
5426 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
5427 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
5428 to use new functions. Add NO_ASN1_OLD which can be set to remove
5429 some old style ASN1 functions: this can be used to determine if old
5430 code will still work when these eventually go away.
5433 *) New extension functions for OCSP structures, these follow the
5434 same conventions as certificates and CRLs.
5437 *) New function X509V3_add1_i2d(). This automatically encodes and
5438 adds an extension. Its behaviour can be customised with various
5439 flags to append, replace or delete. Various wrappers added for
5440 certifcates and CRLs.
5443 *) Fix to avoid calling the underlying ASN1 print routine when
5444 an extension cannot be parsed. Correct a typo in the
5445 OCSP_SERVICELOC extension. Tidy up print OCSP format.
5448 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
5449 entries for variables.
5452 *) Add functionality to apps/openssl.c for detecting locking
5453 problems: As the program is single-threaded, all we have
5454 to do is register a locking callback using an array for
5455 storing which locks are currently held by the program.
5458 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
5459 SSL_get_ex_data_X509_STORE_idx(), which is used in
5460 ssl_verify_cert_chain() and thus can be called at any time
5461 during TLS/SSL handshakes so that thread-safety is essential.
5462 Unfortunately, the ex_data design is not at all suited
5463 for multi-threaded use, so it probably should be abolished.
5466 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
5467 [Broadcom, tweaked and integrated by Geoff Thorpe]
5469 *) Move common extension printing code to new function
5470 X509V3_print_extensions(). Reorganise OCSP print routines and
5471 implement some needed OCSP ASN1 functions. Add OCSP extensions.
5474 *) New function X509_signature_print() to remove duplication in some
5478 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
5479 set (this was treated exactly the same as SET OF previously). This
5480 is used to reorder the STACK representing the structure to match the
5481 encoding. This will be used to get round a problem where a PKCS7
5482 structure which was signed could not be verified because the STACK
5483 order did not reflect the encoded order.
5486 *) Reimplement the OCSP ASN1 module using the new code.
5489 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
5490 for its ASN1 operations. The old style function pointers still exist
5491 for now but they will eventually go away.
5494 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
5495 completely replaces the old ASN1 functionality with a table driven
5496 encoder and decoder which interprets an ASN1_ITEM structure describing
5497 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
5498 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
5499 has also been converted to the new form.
5502 *) Change BN_mod_exp_recp so that negative moduli are tolerated
5503 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
5504 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
5505 for negative moduli.
5508 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
5509 of not touching the result's sign bit.
5512 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
5516 *) Changed the LHASH code to use prototypes for callbacks, and created
5517 macros to declare and implement thin (optionally static) functions
5518 that provide type-safety and avoid function pointer casting for the
5519 type-specific callbacks.
5522 *) Added Kerberos Cipher Suites to be used with TLS, as written in
5524 [Veers Staats <staatsvr@asc.hpc.mil>,
5525 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
5527 *) Reformat the FAQ so the different questions and answers can be divided
5528 in sections depending on the subject.
5531 *) Have the zlib compression code load ZLIB.DLL dynamically under
5535 *) New function BN_mod_sqrt for computing square roots modulo a prime
5536 (using the probabilistic Tonelli-Shanks algorithm unless
5537 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
5538 be handled deterministically).
5539 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
5541 *) Make BN_mod_inverse faster by explicitly handling small quotients
5542 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
5543 512 bits], about 30% for larger ones [1024 or 2048 bits].)
5546 *) New function BN_kronecker.
5549 *) Fix BN_gcd so that it works on negative inputs; the result is
5550 positive unless both parameters are zero.
5551 Previously something reasonably close to an infinite loop was
5552 possible because numbers could be growing instead of shrinking
5553 in the implementation of Euclid's algorithm.
5556 *) Fix BN_is_word() and BN_is_one() macros to take into account the
5557 sign of the number in question.
5559 Fix BN_is_word(a,w) to work correctly for w == 0.
5561 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
5562 because its test if the absolute value of 'a' equals 'w'.
5563 Note that BN_abs_is_word does *not* handle w == 0 reliably;
5564 it exists mostly for use in the implementations of BN_is_zero(),
5565 BN_is_one(), and BN_is_word().
5568 *) New function BN_swap.
5571 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
5572 the exponentiation functions are more likely to produce reasonable
5573 results on negative inputs.
5576 *) Change BN_mod_mul so that the result is always non-negative.
5577 Previously, it could be negative if one of the factors was negative;
5578 I don't think anyone really wanted that behaviour.
5581 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
5582 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
5583 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
5584 and add new functions:
5593 BN_mod_lshift1_quick
5597 These functions always generate non-negative results.
5599 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
5600 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
5602 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
5603 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
5604 be reduced modulo m.
5605 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
5608 The following entry accidentily appeared in the CHANGES file
5609 distributed with OpenSSL 0.9.7. The modifications described in
5610 it do *not* apply to OpenSSL 0.9.7.
5612 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
5613 was actually never needed) and in BN_mul(). The removal in BN_mul()
5614 required a small change in bn_mul_part_recursive() and the addition
5615 of the functions bn_cmp_part_words(), bn_sub_part_words() and
5616 bn_add_part_words(), which do the same thing as bn_cmp_words(),
5617 bn_sub_words() and bn_add_words() except they take arrays with
5622 *) In 'openssl passwd', verify passwords read from the terminal
5623 unless the '-salt' option is used (which usually means that
5624 verification would just waste user's time since the resulting
5625 hash is going to be compared with some given password hash)
5626 or the new '-noverify' option is used.
5628 This is an incompatible change, but it does not affect
5629 non-interactive use of 'openssl passwd' (passwords on the command
5630 line, '-stdin' option, '-in ...' option) and thus should not
5634 *) Remove all references to RSAref, since there's no more need for it.
5637 *) Make DSO load along a path given through an environment variable
5638 (SHLIB_PATH) with shl_load().
5641 *) Constify the ENGINE code as a result of BIGNUM constification.
5642 Also constify the RSA code and most things related to it. In a
5643 few places, most notable in the depth of the ASN.1 code, ugly
5644 casts back to non-const were required (to be solved at a later
5648 *) Make it so the openssl application has all engines loaded by default.
5651 *) Constify the BIGNUM routines a little more.
5654 *) Add the following functions:
5656 ENGINE_load_cswift()
5658 ENGINE_load_atalla()
5660 ENGINE_load_builtin_engines()
5662 That way, an application can itself choose if external engines that
5663 are built-in in OpenSSL shall ever be used or not. The benefit is
5664 that applications won't have to be linked with libdl or other dso
5665 libraries unless it's really needed.
5667 Changed 'openssl engine' to load all engines on demand.
5668 Changed the engine header files to avoid the duplication of some
5669 declarations (they differed!).
5672 *) 'openssl engine' can now list capabilities.
5675 *) Better error reporting in 'openssl engine'.
5678 *) Never call load_dh_param(NULL) in s_server.
5681 *) Add engine application. It can currently list engines by name and
5682 identity, and test if they are actually available.
5685 *) Improve RPM specification file by forcing symbolic linking and making
5686 sure the installed documentation is also owned by root.root.
5687 [Damien Miller <djm@mindrot.org>]
5689 *) Give the OpenSSL applications more possibilities to make use of
5690 keys (public as well as private) handled by engines.
5693 *) Add OCSP code that comes from CertCo.
5696 *) Add VMS support for the Rijndael code.
5699 *) Added untested support for Nuron crypto accelerator.
5702 *) Add support for external cryptographic devices. This code was
5703 previously distributed separately as the "engine" branch.
5704 [Geoff Thorpe, Richard Levitte]
5706 *) Rework the filename-translation in the DSO code. It is now possible to
5707 have far greater control over how a "name" is turned into a filename
5708 depending on the operating environment and any oddities about the
5709 different shared library filenames on each system.
5712 *) Support threads on FreeBSD-elf in Configure.
5715 *) Fix for SHA1 assembly problem with MASM: it produces
5716 warnings about corrupt line number information when assembling
5717 with debugging information. This is caused by the overlapping
5719 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
5722 NCONF_get_number() has no error checking at all. As a replacement,
5723 NCONF_get_number_e() is defined (_e for "error checking") and is
5724 promoted strongly. The old NCONF_get_number is kept around for
5725 binary backward compatibility.
5726 Make it possible for methods to load from something other than a BIO,
5727 by providing a function pointer that is given a name instead of a BIO.
5728 For example, this could be used to load configuration data from an
5732 *) Fix for non blocking accept BIOs. Added new I/O special reason
5733 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
5734 with non blocking I/O was not possible because no retry code was
5735 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
5739 *) Added the beginnings of Rijndael support.
5742 *) Fix for bug in DirectoryString mask setting. Add support for
5743 X509_NAME_print_ex() in 'req' and X509_print_ex() function
5744 to allow certificate printing to more controllable, additional
5745 'certopt' option to 'x509' to allow new printing options to be
5749 *) Clean old EAY MD5 hack from e_os.h.
5752 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
5754 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
5755 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
5756 [Joe Orton, Steve Henson]
5758 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
5760 *) Fix additional bug revealed by the NISCC test suite:
5762 Stop bug triggering large recursion when presented with
5763 certain ASN.1 tags (CVE-2003-0851)
5766 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
5768 *) Fix various bugs revealed by running the NISCC test suite:
5770 Stop out of bounds reads in the ASN1 code when presented with
5771 invalid tags (CVE-2003-0543 and CVE-2003-0544).
5773 If verify callback ignores invalid public key errors don't try to check
5774 certificate signature with the NULL public key.
5778 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
5779 if the server requested one: as stated in TLS 1.0 and SSL 3.0
5783 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
5784 extra data after the compression methods not only for TLS 1.0
5785 but also for SSL 3.0 (as required by the specification).
5786 [Bodo Moeller; problem pointed out by Matthias Loepfe]
5788 *) Change X509_certificate_type() to mark the key as exported/exportable
5789 when it's 512 *bits* long, not 512 bytes.
5792 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
5794 *) Countermeasure against the Klima-Pokorny-Rosa extension of
5795 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
5796 a protocol version number mismatch like a decryption error
5797 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
5800 *) Turn on RSA blinding by default in the default implementation
5801 to avoid a timing attack. Applications that don't want it can call
5802 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
5803 They would be ill-advised to do so in most cases.
5804 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
5806 *) Change RSA blinding code so that it works when the PRNG is not
5807 seeded (in this case, the secret RSA exponent is abused as
5808 an unpredictable seed -- if it is not unpredictable, there
5809 is no point in blinding anyway). Make RSA blinding thread-safe
5810 by remembering the creator's thread ID in rsa->blinding and
5811 having all other threads use local one-time blinding factors
5812 (this requires more computation than sharing rsa->blinding, but
5813 avoids excessive locking; and if an RSA object is not shared
5814 between threads, blinding will still be very fast).
5817 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
5819 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
5820 via timing by performing a MAC computation even if incorrrect
5821 block cipher padding has been found. This is a countermeasure
5822 against active attacks where the attacker has to distinguish
5823 between bad padding and a MAC verification error. (CVE-2003-0078)
5825 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
5826 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
5827 Martin Vuagnoux (EPFL, Ilion)]
5829 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
5831 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
5832 memory from it's contents. This is done with a counter that will
5833 place alternating values in each byte. This can be used to solve
5834 two issues: 1) the removal of calls to memset() by highly optimizing
5835 compilers, and 2) cleansing with other values than 0, since those can
5836 be read through on certain media, for example a swap space on disk.
5839 *) Bugfix: client side session caching did not work with external caching,
5840 because the session->cipher setting was not restored when reloading
5841 from the external cache. This problem was masked, when
5842 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
5843 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
5846 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
5847 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
5848 [Zeev Lieber <zeev-l@yahoo.com>]
5850 *) Undo an undocumented change introduced in 0.9.6e which caused
5851 repeated calls to OpenSSL_add_all_ciphers() and
5852 OpenSSL_add_all_digests() to be ignored, even after calling
5856 *) Change the default configuration reader to deal with last line not
5857 being properly terminated.
5860 *) Change X509_NAME_cmp() so it applies the special rules on handling
5861 DN values that are of type PrintableString, as well as RDNs of type
5862 emailAddress where the value has the type ia5String.
5863 [stefank@valicert.com via Richard Levitte]
5865 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
5866 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
5867 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
5868 the bitwise-OR of the two for use by the majority of applications
5869 wanting this behaviour, and update the docs. The documented
5870 behaviour and actual behaviour were inconsistent and had been
5871 changing anyway, so this is more a bug-fix than a behavioural
5873 [Geoff Thorpe, diagnosed by Nadav Har'El]
5875 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
5876 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
5879 *) Fix initialization code race conditions in
5880 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
5881 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
5882 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
5883 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
5884 ssl2_get_cipher_by_char(),
5885 ssl3_get_cipher_by_char().
5886 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
5888 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
5889 the cached sessions are flushed, as the remove_cb() might use ex_data
5890 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
5891 (see [openssl.org #212]).
5892 [Geoff Thorpe, Lutz Jaenicke]
5894 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
5895 length, instead of the encoding length to d2i_ASN1_OBJECT.
5898 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
5900 *) [In 0.9.6g-engine release:]
5901 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
5902 [Lynn Gazis <lgazis@rainbow.com>]
5904 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
5906 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
5907 and get fix the header length calculation.
5908 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
5909 Alon Kantor <alonk@checkpoint.com> (and others),
5912 *) Use proper error handling instead of 'assertions' in buffer
5913 overflow checks added in 0.9.6e. This prevents DoS (the
5914 assertions could call abort()).
5915 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
5917 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
5919 *) Add various sanity checks to asn1_get_length() to reject
5920 the ASN1 length bytes if they exceed sizeof(long), will appear
5921 negative or the content length exceeds the length of the
5923 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
5925 *) Fix cipher selection routines: ciphers without encryption had no flags
5926 for the cipher strength set and where therefore not handled correctly
5927 by the selection routines (PR #130).
5930 *) Fix EVP_dsa_sha macro.
5934 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
5935 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
5936 that was added in OpenSSL 0.9.6d.
5938 As the countermeasure turned out to be incompatible with some
5939 broken SSL implementations, the new option is part of SSL_OP_ALL.
5940 SSL_OP_ALL is usually employed when compatibility with weird SSL
5941 implementations is desired (e.g. '-bugs' option to 's_client' and
5942 's_server'), so the new option is automatically set in many
5946 *) Changes in security patch:
5948 Changes marked "(CHATS)" were sponsored by the Defense Advanced
5949 Research Projects Agency (DARPA) and Air Force Research Laboratory,
5950 Air Force Materiel Command, USAF, under agreement number
5953 *) Add various sanity checks to asn1_get_length() to reject
5954 the ASN1 length bytes if they exceed sizeof(long), will appear
5955 negative or the content length exceeds the length of the
5956 supplied buffer. (CVE-2002-0659)
5957 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
5959 *) Assertions for various potential buffer overflows, not known to
5961 [Ben Laurie (CHATS)]
5963 *) Various temporary buffers to hold ASCII versions of integers were
5964 too small for 64 bit platforms. (CVE-2002-0655)
5965 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
5967 *) Remote buffer overflow in SSL3 protocol - an attacker could
5968 supply an oversized session ID to a client. (CVE-2002-0656)
5969 [Ben Laurie (CHATS)]
5971 *) Remote buffer overflow in SSL2 protocol - an attacker could
5972 supply an oversized client master key. (CVE-2002-0656)
5973 [Ben Laurie (CHATS)]
5975 Changes between 0.9.6c and 0.9.6d [9 May 2002]
5977 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
5978 encoded as NULL) with id-dsa-with-sha1.
5979 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
5981 *) Check various X509_...() return values in apps/req.c.
5982 [Nils Larsch <nla@trustcenter.de>]
5984 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
5985 an end-of-file condition would erronously be flagged, when the CRLF
5986 was just at the end of a processed block. The bug was discovered when
5987 processing data through a buffering memory BIO handing the data to a
5988 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
5989 <ptsekov@syntrex.com> and Nedelcho Stanev.
5992 *) Implement a countermeasure against a vulnerability recently found
5993 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
5994 before application data chunks to avoid the use of known IVs
5995 with data potentially chosen by the attacker.
5998 *) Fix length checks in ssl3_get_client_hello().
6001 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
6002 to prevent ssl3_read_internal() from incorrectly assuming that
6003 ssl3_read_bytes() found application data while handshake
6004 processing was enabled when in fact s->s3->in_read_app_data was
6005 merely automatically cleared during the initial handshake.
6006 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
6008 *) Fix object definitions for Private and Enterprise: they were not
6009 recognized in their shortname (=lowercase) representation. Extend
6010 obj_dat.pl to issue an error when using undefined keywords instead
6011 of silently ignoring the problem (Svenning Sorensen
6012 <sss@sss.dnsalias.net>).
6015 *) Fix DH_generate_parameters() so that it works for 'non-standard'
6016 generators, i.e. generators other than 2 and 5. (Previously, the
6017 code did not properly initialise the 'add' and 'rem' values to
6018 BN_generate_prime().)
6020 In the new general case, we do not insist that 'generator' is
6021 actually a primitive root: This requirement is rather pointless;
6022 a generator of the order-q subgroup is just as good, if not
6026 *) Map new X509 verification errors to alerts. Discovered and submitted by
6027 Tom Wu <tom@arcot.com>.
6030 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
6031 returning non-zero before the data has been completely received
6032 when using non-blocking I/O.
6033 [Bodo Moeller; problem pointed out by John Hughes]
6035 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
6036 [Ben Laurie, Lutz Jaenicke]
6038 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
6039 Yoram Zahavi <YoramZ@gilian.com>).
6042 *) Add information about CygWin 1.3 and on, and preserve proper
6043 configuration for the versions before that.
6044 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
6046 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
6047 check whether we deal with a copy of a session and do not delete from
6048 the cache in this case. Problem reported by "Izhar Shoshani Levi"
6049 <izhar@checkpoint.com>.
6052 *) Do not store session data into the internal session cache, if it
6053 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
6054 flag is set). Proposed by Aslam <aslam@funk.com>.
6057 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
6061 *) [In 0.9.6d-engine release:]
6062 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
6063 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6065 *) Add the configuration target linux-s390x.
6066 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
6068 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
6069 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
6070 variable as an indication that a ClientHello message has been
6071 received. As the flag value will be lost between multiple
6072 invocations of ssl3_accept when using non-blocking I/O, the
6073 function may not be aware that a handshake has actually taken
6074 place, thus preventing a new session from being added to the
6077 To avoid this problem, we now set s->new_session to 2 instead of
6078 using a local variable.
6079 [Lutz Jaenicke, Bodo Moeller]
6081 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
6082 if the SSL_R_LENGTH_MISMATCH error is detected.
6083 [Geoff Thorpe, Bodo Moeller]
6085 *) New 'shared_ldflag' column in Configure platform table.
6088 *) Fix EVP_CIPHER_mode macro.
6089 ["Dan S. Camper" <dan@bti.net>]
6091 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
6092 type, we must throw them away by setting rr->length to 0.
6093 [D P Chang <dpc@qualys.com>]
6095 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
6097 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
6098 <Dominikus.Scherkl@biodata.com>. (The previous implementation
6099 worked incorrectly for those cases where range = 10..._2 and
6100 3*range is two bits longer than range.)
6103 *) Only add signing time to PKCS7 structures if it is not already
6107 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
6108 OBJ_ld_ce should be OBJ_id_ce.
6109 Also some ip-pda OIDs in crypto/objects/objects.txt were
6110 incorrect (cf. RFC 3039).
6111 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
6113 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
6114 returns early because it has nothing to do.
6115 [Andy Schneider <andy.schneider@bjss.co.uk>]
6117 *) [In 0.9.6c-engine release:]
6118 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
6119 [Andy Schneider <andy.schneider@bjss.co.uk>]
6121 *) [In 0.9.6c-engine release:]
6122 Add support for Cryptographic Appliance's keyserver technology.
6123 (Use engine 'keyclient')
6124 [Cryptographic Appliances and Geoff Thorpe]
6126 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
6127 is called via tools/c89.sh because arguments have to be
6128 rearranged (all '-L' options must appear before the first object
6130 [Richard Shapiro <rshapiro@abinitio.com>]
6132 *) [In 0.9.6c-engine release:]
6133 Add support for Broadcom crypto accelerator cards, backported
6135 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
6137 *) [In 0.9.6c-engine release:]
6138 Add support for SureWare crypto accelerator cards from
6139 Baltimore Technologies. (Use engine 'sureware')
6140 [Baltimore Technologies and Mark Cox]
6142 *) [In 0.9.6c-engine release:]
6143 Add support for crypto accelerator cards from Accelerated
6144 Encryption Processing, www.aep.ie. (Use engine 'aep')
6145 [AEP Inc. and Mark Cox]
6147 *) Add a configuration entry for gcc on UnixWare.
6148 [Gary Benson <gbenson@redhat.com>]
6150 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
6151 messages are stored in a single piece (fixed-length part and
6152 variable-length part combined) and fix various bugs found on the way.
6155 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
6156 instead. BIO_gethostbyname() does not know what timeouts are
6157 appropriate, so entries would stay in cache even when they have
6159 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
6161 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
6162 faced with a pathologically small ClientHello fragment that does
6163 not contain client_version: Instead of aborting with an error,
6164 simply choose the highest available protocol version (i.e.,
6165 TLS 1.0 unless it is disabled). In practice, ClientHello
6166 messages are never sent like this, but this change gives us
6167 strictly correct behaviour at least for TLS.
6170 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
6171 never resets s->method to s->ctx->method when called from within
6172 one of the SSL handshake functions.
6173 [Bodo Moeller; problem pointed out by Niko Baric]
6175 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
6176 (sent using the client's version number) if client_version is
6177 smaller than the protocol version in use. Also change
6178 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
6179 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
6180 the client will at least see that alert.
6183 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
6187 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
6188 client receives HelloRequest while in a handshake.
6189 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
6191 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
6192 should end in 'break', not 'goto end' which circuments various
6193 cleanups done in state SSL_ST_OK. But session related stuff
6194 must be disabled for SSL_ST_OK in the case that we just sent a
6197 Also avoid some overhead by not calling ssl_init_wbio_buffer()
6198 before just sending a HelloRequest.
6199 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
6201 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
6202 reveal whether illegal block cipher padding was found or a MAC
6203 verification error occured. (Neither SSLerr() codes nor alerts
6204 are directly visible to potential attackers, but the information
6205 may leak via logfiles.)
6207 Similar changes are not required for the SSL 2.0 implementation
6208 because the number of padding bytes is sent in clear for SSL 2.0,
6209 and the extra bytes are just ignored. However ssl/s2_pkt.c
6210 failed to verify that the purported number of padding bytes is in
6214 *) Add OpenUNIX-8 support including shared libraries
6215 (Boyd Lynn Gerber <gerberb@zenez.com>).
6218 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
6219 'wristwatch attack' using huge encoding parameters (cf.
6220 James H. Manger's CRYPTO 2001 paper). Note that the
6221 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
6222 encoding parameters and hence was not vulnerable.
6225 *) BN_sqr() bug fix.
6226 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
6228 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
6229 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
6230 followed by modular reduction.
6231 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
6233 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
6234 equivalent based on BN_pseudo_rand() instead of BN_rand().
6237 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
6238 This function was broken, as the check for a new client hello message
6239 to handle SGC did not allow these large messages.
6240 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
6243 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
6246 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
6247 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
6250 *) Rework the configuration and shared library support for Tru64 Unix.
6251 The configuration part makes use of modern compiler features and
6252 still retains old compiler behavior for those that run older versions
6253 of the OS. The shared library support part includes a variant that
6254 uses the RPATH feature, and is available through the special
6255 configuration target "alpha-cc-rpath", which will never be selected
6257 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
6259 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
6260 with the same message size as in ssl3_get_certificate_request().
6261 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
6262 messages might inadvertently be reject as too long.
6263 [Petr Lampa <lampa@fee.vutbr.cz>]
6265 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
6268 *) Modified SSL library such that the verify_callback that has been set
6269 specificly for an SSL object with SSL_set_verify() is actually being
6270 used. Before the change, a verify_callback set with this function was
6271 ignored and the verify_callback() set in the SSL_CTX at the time of
6272 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
6273 to allow the necessary settings.
6276 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
6277 explicitly to NULL, as at least on Solaris 8 this seems not always to be
6278 done automatically (in contradiction to the requirements of the C
6279 standard). This made problems when used from OpenSSH.
6282 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
6283 dh->length and always used
6285 BN_rand_range(priv_key, dh->p).
6287 BN_rand_range() is not necessary for Diffie-Hellman, and this
6288 specific range makes Diffie-Hellman unnecessarily inefficient if
6289 dh->length (recommended exponent length) is much smaller than the
6290 length of dh->p. We could use BN_rand_range() if the order of
6291 the subgroup was stored in the DH structure, but we only have
6296 BN_rand(priv_key, l, ...)
6298 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
6304 RSA_eay_public_encrypt
6305 RSA_eay_private_decrypt
6306 RSA_eay_private_encrypt (signing)
6307 RSA_eay_public_decrypt (signature verification)
6309 (default implementations for RSA_public_encrypt,
6310 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
6311 always reject numbers >= n.
6314 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
6315 to synchronize access to 'locking_thread'. This is necessary on
6316 systems where access to 'locking_thread' (an 'unsigned long'
6317 variable) is not atomic.
6320 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
6321 *before* setting the 'crypto_lock_rand' flag. The previous code had
6322 a race condition if 0 is a valid thread ID.
6323 [Travis Vitek <vitek@roguewave.com>]
6325 *) Add support for shared libraries under Irix.
6326 [Albert Chin-A-Young <china@thewrittenword.com>]
6328 *) Add configuration option to build on Linux on both big-endian and
6330 [Ralf Baechle <ralf@uni-koblenz.de>]
6332 *) Add the possibility to create shared libraries on HP-UX.
6335 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
6337 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
6338 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
6339 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
6340 PRNG state recovery was possible based on the output of
6341 one PRNG request appropriately sized to gain knowledge on
6342 'md' followed by enough consecutive 1-byte PRNG requests
6343 to traverse all of 'state'.
6345 1. When updating 'md_local' (the current thread's copy of 'md')
6346 during PRNG output generation, hash all of the previous
6347 'md_local' value, not just the half used for PRNG output.
6349 2. Make the number of bytes from 'state' included into the hash
6350 independent from the number of PRNG bytes requested.
6352 The first measure alone would be sufficient to avoid
6353 Markku-Juhani's attack. (Actually it had never occurred
6354 to me that the half of 'md_local' used for chaining was the
6355 half from which PRNG output bytes were taken -- I had always
6356 assumed that the secret half would be used.) The second
6357 measure makes sure that additional data from 'state' is never
6358 mixed into 'md_local' in small portions; this heuristically
6359 further strengthens the PRNG.
6362 *) Fix crypto/bn/asm/mips3.s.
6365 *) When only the key is given to "enc", the IV is undefined. Print out
6366 an error message in this case.
6369 *) Handle special case when X509_NAME is empty in X509 printing routines.
6372 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
6373 positive and less than q.
6376 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
6377 used: it isn't thread safe and the add_lock_callback should handle
6379 [Paul Rose <Paul.Rose@bridge.com>]
6381 *) Verify that incoming data obeys the block size in
6382 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
6386 [Ulf Möller, Bodo Möller]
6388 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
6389 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
6390 when fixing the server behaviour for backwards-compatible 'client
6391 hello' messages. (Note that the attack is impractical against
6392 SSL 3.0 and TLS 1.0 anyway because length and version checking
6393 means that the probability of guessing a valid ciphertext is
6394 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
6397 Before 0.9.5, the countermeasure (hide the error by generating a
6398 random 'decryption result') did not work properly because
6399 ERR_clear_error() was missing, meaning that SSL_get_error() would
6400 detect the supposedly ignored error.
6402 Both problems are now fixed.
6405 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
6406 (previously it was 1024).
6409 *) Fix for compatibility mode trust settings: ignore trust settings
6410 unless some valid trust or reject settings are present.
6413 *) Fix for blowfish EVP: its a variable length cipher.
6416 *) Fix various bugs related to DSA S/MIME verification. Handle missing
6417 parameters in DSA public key structures and return an error in the
6418 DSA routines if parameters are absent.
6421 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
6422 in the current directory if neither $RANDFILE nor $HOME was set.
6423 RAND_file_name() in 0.9.6a returned NULL in this case. This has
6424 caused some confusion to Windows users who haven't defined $HOME.
6425 Thus RAND_file_name() is changed again: e_os.h can define a
6426 DEFAULT_HOME, which will be used if $HOME is not set.
6427 For Windows, we use "C:"; on other platforms, we still require
6428 environment variables.
6430 *) Move 'if (!initialized) RAND_poll()' into regions protected by
6431 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
6432 having multiple threads call RAND_poll() concurrently.
6435 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
6436 combination of a flag and a thread ID variable.
6437 Otherwise while one thread is in ssleay_rand_bytes (which sets the
6438 flag), *other* threads can enter ssleay_add_bytes without obeying
6439 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
6440 that they do not hold after the first thread unsets add_do_not_lock).
6443 *) Change bctest again: '-x' expressions are not available in all
6447 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
6449 *) Fix a couple of memory leaks in PKCS7_dataDecode()
6450 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
6452 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
6453 the default extension for executables, if any. Also, make the perl
6454 scripts that use symlink() to test if it really exists and use "cp"
6455 if it doesn't. All this made OpenSSL compilable and installable in
6459 *) Fix for asn1_GetSequence() for indefinite length constructed data.
6460 If SEQUENCE is length is indefinite just set c->slen to the total
6461 amount of data available.
6462 [Steve Henson, reported by shige@FreeBSD.org]
6463 [This change does not apply to 0.9.7.]
6465 *) Change bctest to avoid here-documents inside command substitution
6466 (workaround for FreeBSD /bin/sh bug).
6467 For compatibility with Ultrix, avoid shell functions (introduced
6468 in the bctest version that searches along $PATH).
6471 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
6472 with des_encrypt() defined on some operating systems, like Solaris
6476 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
6477 On the Importance of Eliminating Errors in Cryptographic
6478 Computations, J. Cryptology 14 (2001) 2, 101-119,
6479 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
6482 *) MIPS assembler BIGNUM division bug fix.
6485 *) Disabled incorrect Alpha assembler code.
6488 *) Fix PKCS#7 decode routines so they correctly update the length
6489 after reading an EOC for the EXPLICIT tag.
6491 [This change does not apply to 0.9.7.]
6493 *) Fix bug in PKCS#12 key generation routines. This was triggered
6494 if a 3DES key was generated with a 0 initial byte. Include
6495 PKCS12_BROKEN_KEYGEN compilation option to retain the old
6496 (but broken) behaviour.
6499 *) Enhance bctest to search for a working bc along $PATH and print
6501 [Tim Rice <tim@multitalents.net> via Richard Levitte]
6503 *) Fix memory leaks in err.c: free err_data string if necessary;
6504 don't write to the wrong index in ERR_set_error_data.
6507 *) Implement ssl23_peek (analogous to ssl23_read), which previously
6511 *) Replace rdtsc with _emit statements for VC++ version 5.
6512 [Jeremy Cooper <jeremy@baymoo.org>]
6514 *) Make it possible to reuse SSLv2 sessions.
6517 *) In copy_email() check for >= 0 as a return value for
6518 X509_NAME_get_index_by_NID() since 0 is a valid index.
6519 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
6521 *) Avoid coredump with unsupported or invalid public keys by checking if
6522 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
6523 PKCS7_verify() fails with non detached data.
6526 *) Don't use getenv in library functions when run as setuid/setgid.
6527 New function OPENSSL_issetugid().
6530 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
6531 due to incorrect handling of multi-threading:
6533 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
6535 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
6537 3. Count how many times MemCheck_off() has been called so that
6538 nested use can be treated correctly. This also avoids
6539 inband-signalling in the previous code (which relied on the
6540 assumption that thread ID 0 is impossible).
6543 *) Add "-rand" option also to s_client and s_server.
6546 *) Fix CPU detection on Irix 6.x.
6547 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
6548 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
6550 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
6553 [This change does not apply to 0.9.7.]
6555 *) Use the cached encoding of an X509_NAME structure rather than
6556 copying it. This is apparently the reason for the libsafe "errors"
6557 but the code is actually correct.
6560 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
6561 Bleichenbacher's DSA attack.
6562 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
6563 to be set and top=0 forces the highest bit to be set; top=-1 is new
6564 and leaves the highest bit random.
6565 [Ulf Moeller, Bodo Moeller]
6567 *) In the NCONF_...-based implementations for CONF_... queries
6568 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
6569 a temporary CONF structure with the data component set to NULL
6570 (which gives segmentation faults in lh_retrieve).
6571 Instead, use NULL for the CONF pointer in CONF_get_string and
6572 CONF_get_number (which may use environment variables) and directly
6573 return NULL from CONF_get_section.
6576 *) Fix potential buffer overrun for EBCDIC.
6579 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
6580 keyUsage if basicConstraints absent for a CA.
6583 *) Make SMIME_write_PKCS7() write mail header values with a format that
6584 is more generally accepted (no spaces before the semicolon), since
6585 some programs can't parse those values properly otherwise. Also make
6586 sure BIO's that break lines after each write do not create invalid
6590 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
6591 macros previously used would not encode an empty SEQUENCE OF
6592 and break the signature.
6594 [This change does not apply to 0.9.7.]
6596 *) Zero the premaster secret after deriving the master secret in
6600 *) Add some EVP_add_digest_alias registrations (as found in
6601 OpenSSL_add_all_digests()) to SSL_library_init()
6602 aka OpenSSL_add_ssl_algorithms(). This provides improved
6603 compatibility with peers using X.509 certificates
6604 with unconventional AlgorithmIdentifier OIDs.
6607 *) Fix for Irix with NO_ASM.
6608 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
6610 *) ./config script fixes.
6611 [Ulf Moeller, Richard Levitte]
6613 *) Fix 'openssl passwd -1'.
6616 *) Change PKCS12_key_gen_asc() so it can cope with non null
6617 terminated strings whose length is passed in the passlen
6618 parameter, for example from PEM callbacks. This was done
6619 by adding an extra length parameter to asc2uni().
6620 [Steve Henson, reported by <oddissey@samsung.co.kr>]
6622 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
6623 call failed, free the DSA structure.
6626 *) Fix to uni2asc() to cope with zero length Unicode strings.
6627 These are present in some PKCS#12 files.
6630 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
6631 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
6632 when writing a 32767 byte record.
6633 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
6635 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
6636 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
6638 (RSA objects have a reference count access to which is protected
6639 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
6640 so they are meant to be shared between threads.)
6641 [Bodo Moeller, Geoff Thorpe; original patch submitted by
6642 "Reddie, Steven" <Steven.Reddie@ca.com>]
6644 *) Fix a deadlock in CRYPTO_mem_leaks().
6647 *) Use better test patterns in bntest.
6650 *) rand_win.c fix for Borland C.
6653 *) BN_rshift bugfix for n == 0.
6656 *) Add a 'bctest' script that checks for some known 'bc' bugs
6657 so that 'make test' does not abort just because 'bc' is broken.
6660 *) Store verify_result within SSL_SESSION also for client side to
6661 avoid potential security hole. (Re-used sessions on the client side
6662 always resulted in verify_result==X509_V_OK, not using the original
6663 result of the server certificate verification.)
6666 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
6667 SSL3_RT_APPLICATION_DATA, return 0.
6668 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
6672 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
6673 releases, have been re-implemented by renaming the previous
6674 implementations of ssl2_read and ssl3_read to ssl2_read_internal
6675 and ssl3_read_internal, respectively, and adding 'peek' parameters
6676 to them. The new ssl[23]_{read,peek} functions are calls to
6677 ssl[23]_read_internal with the 'peek' flag set appropriately.
6678 A 'peek' parameter has also been added to ssl3_read_bytes, which
6679 does the actual work for ssl3_read_internal.
6682 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
6683 the method-specific "init()" handler. Also clean up ex_data after
6684 calling the method-specific "finish()" handler. Previously, this was
6685 happening the other way round.
6688 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
6689 The previous value, 12, was not always sufficient for BN_mod_exp().
6692 *) Make sure that shared libraries get the internal name engine with
6693 the full version number and not just 0. This should mark the
6694 shared libraries as not backward compatible. Of course, this should
6695 be changed again when we can guarantee backward binary compatibility.
6698 *) Fix typo in get_cert_by_subject() in by_dir.c
6699 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
6701 *) Rework the system to generate shared libraries:
6703 - Make note of the expected extension for the shared libraries and
6704 if there is a need for symbolic links from for example libcrypto.so.0
6705 to libcrypto.so.0.9.7. There is extended info in Configure for
6708 - Make as few rebuilds of the shared libraries as possible.
6710 - Still avoid linking the OpenSSL programs with the shared libraries.
6712 - When installing, install the shared libraries separately from the
6716 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
6718 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
6719 and not in SSL_clear because the latter is also used by the
6720 accept/connect functions; previously, the settings made by
6721 SSL_set_read_ahead would be lost during the handshake.
6722 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
6724 *) Correct util/mkdef.pl to be selective about disabled algorithms.
6725 Previously, it would create entries for disableed algorithms no
6729 *) Added several new manual pages for SSL_* function.
6732 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
6734 *) In ssl23_get_client_hello, generate an error message when faced
6735 with an initial SSL 3.0/TLS record that is too small to contain the
6736 first two bytes of the ClientHello message, i.e. client_version.
6737 (Note that this is a pathologic case that probably has never happened
6738 in real life.) The previous approach was to use the version number
6739 from the record header as a substitute; but our protocol choice
6740 should not depend on that one because it is not authenticated
6741 by the Finished messages.
6744 *) More robust randomness gathering functions for Windows.
6745 [Jeffrey Altman <jaltman@columbia.edu>]
6747 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
6748 not set then we don't setup the error code for issuer check errors
6749 to avoid possibly overwriting other errors which the callback does
6750 handle. If an application does set the flag then we assume it knows
6751 what it is doing and can handle the new informational codes
6755 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
6756 a general "ANY" type, as such it should be able to decode anything
6757 including tagged types. However it didn't check the class so it would
6758 wrongly interpret tagged types in the same way as their universal
6759 counterpart and unknown types were just rejected. Changed so that the
6760 tagged and unknown types are handled in the same way as a SEQUENCE:
6761 that is the encoding is stored intact. There is also a new type
6762 "V_ASN1_OTHER" which is used when the class is not universal, in this
6763 case we have no idea what the actual type is so we just lump them all
6767 *) On VMS, stdout may very well lead to a file that is written to
6768 in a record-oriented fashion. That means that every write() will
6769 write a separate record, which will be read separately by the
6770 programs trying to read from it. This can be very confusing.
6772 The solution is to put a BIO filter in the way that will buffer
6773 text until a linefeed is reached, and then write everything a
6774 line at a time, so every record written will be an actual line,
6775 not chunks of lines and not (usually doesn't happen, but I've
6776 seen it once) several lines in one record. BIO_f_linebuffer() is
6779 Currently, it's a VMS-only method, because that's where it has
6780 been tested well enough.
6783 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
6784 it can return incorrect results.
6785 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
6786 but it was in 0.9.6-beta[12].)
6789 *) Disable the check for content being present when verifying detached
6790 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
6791 include zero length content when signing messages.
6794 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
6795 BIO_ctrl (for BIO pairs).
6798 *) Add DSO method for VMS.
6801 *) Bug fix: Montgomery multiplication could produce results with the
6805 *) Add RPM specification openssl.spec and modify it to build three
6806 packages. The default package contains applications, application
6807 documentation and run-time libraries. The devel package contains
6808 include files, static libraries and function documentation. The
6809 doc package contains the contents of the doc directory. The original
6810 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
6813 *) Add a large number of documentation files for many SSL routines.
6814 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
6816 *) Add a configuration entry for Sony News 4.
6817 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
6819 *) Don't set the two most significant bits to one when generating a
6820 random number < q in the DSA library.
6823 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
6824 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
6825 the underlying transport is blocking) if a handshake took place.
6826 (The default behaviour is needed by applications such as s_client
6827 and s_server that use select() to determine when to use SSL_read;
6828 but for applications that know in advance when to expect data, it
6829 just makes things more complicated.)
6832 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
6836 *) Add a few more EBCDIC conditionals that make `req' and `x509'
6837 work better on such systems.
6838 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
6840 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
6841 Update PKCS12_parse() so it copies the friendlyName and the
6842 keyid to the certificates aux info.
6845 *) Fix bug in PKCS7_verify() which caused an infinite loop
6846 if there was more than one signature.
6847 [Sven Uszpelkat <su@celocom.de>]
6849 *) Major change in util/mkdef.pl to include extra information
6850 about each symbol, as well as presentig variables as well
6851 as functions. This change means that there's n more need
6852 to rebuild the .num files when some algorithms are excluded.
6855 *) Allow the verify time to be set by an application,
6856 rather than always using the current time.
6859 *) Phase 2 verify code reorganisation. The certificate
6860 verify code now looks up an issuer certificate by a
6861 number of criteria: subject name, authority key id
6862 and key usage. It also verifies self signed certificates
6863 by the same criteria. The main comparison function is
6864 X509_check_issued() which performs these checks.
6866 Lot of changes were necessary in order to support this
6867 without completely rewriting the lookup code.
6869 Authority and subject key identifier are now cached.
6871 The LHASH 'certs' is X509_STORE has now been replaced
6872 by a STACK_OF(X509_OBJECT). This is mainly because an
6873 LHASH can't store or retrieve multiple objects with
6874 the same hash value.
6876 As a result various functions (which were all internal
6877 use only) have changed to handle the new X509_STORE
6878 structure. This will break anything that messed round
6879 with X509_STORE internally.
6881 The functions X509_STORE_add_cert() now checks for an
6882 exact match, rather than just subject name.
6884 The X509_STORE API doesn't directly support the retrieval
6885 of multiple certificates matching a given criteria, however
6886 this can be worked round by performing a lookup first
6887 (which will fill the cache with candidate certificates)
6888 and then examining the cache for matches. This is probably
6889 the best we can do without throwing out X509_LOOKUP
6890 entirely (maybe later...).
6892 The X509_VERIFY_CTX structure has been enhanced considerably.
6894 All certificate lookup operations now go via a get_issuer()
6895 callback. Although this currently uses an X509_STORE it
6896 can be replaced by custom lookups. This is a simple way
6897 to bypass the X509_STORE hackery necessary to make this
6898 work and makes it possible to use more efficient techniques
6899 in future. A very simple version which uses a simple
6900 STACK for its trusted certificate store is also provided
6901 using X509_STORE_CTX_trusted_stack().
6903 The verify_cb() and verify() callbacks now have equivalents
6904 in the X509_STORE_CTX structure.
6906 X509_STORE_CTX also has a 'flags' field which can be used
6907 to customise the verify behaviour.
6910 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
6911 excludes S/MIME capabilities.
6914 *) When a certificate request is read in keep a copy of the
6915 original encoding of the signed data and use it when outputing
6916 again. Signatures then use the original encoding rather than
6917 a decoded, encoded version which may cause problems if the
6918 request is improperly encoded.
6921 *) For consistency with other BIO_puts implementations, call
6922 buffer_write(b, ...) directly in buffer_puts instead of calling
6925 In BIO_puts, increment b->num_write as in BIO_write.
6926 [Peter.Sylvester@EdelWeb.fr]
6928 *) Fix BN_mul_word for the case where the word is 0. (We have to use
6929 BN_zero, we may not return a BIGNUM with an array consisting of
6933 *) Avoid calling abort() from within the library when problems are
6934 detected, except if preprocessor symbols have been defined
6935 (such as REF_CHECK, BN_DEBUG etc.).
6938 *) New openssl application 'rsautl'. This utility can be
6939 used for low level RSA operations. DER public key
6940 BIO/fp routines also added.
6943 *) New Configure entry and patches for compiling on QNX 4.
6944 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
6946 *) A demo state-machine implementation was sponsored by
6947 Nuron (http://www.nuron.com/) and is now available in
6948 demos/state_machine.
6951 *) New options added to the 'dgst' utility for signature
6952 generation and verification.
6955 *) Unrecognized PKCS#7 content types are now handled via a
6956 catch all ASN1_TYPE structure. This allows unsupported
6957 types to be stored as a "blob" and an application can
6958 encode and decode it manually.
6961 *) Fix various signed/unsigned issues to make a_strex.c
6963 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
6965 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
6966 length if passed a buffer. ASN1_INTEGER_to_BN failed
6967 if passed a NULL BN and its argument was negative.
6968 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
6970 *) Modification to PKCS#7 encoding routines to output definite
6971 length encoding. Since currently the whole structures are in
6972 memory there's not real point in using indefinite length
6973 constructed encoding. However if OpenSSL is compiled with
6974 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
6977 *) Added BIO_vprintf() and BIO_vsnprintf().
6980 *) Added more prefixes to parse for in the the strings written
6981 through a logging bio, to cover all the levels that are available
6982 through syslog. The prefixes are now:
6984 PANIC, EMERG, EMR => LOG_EMERG
6985 ALERT, ALR => LOG_ALERT
6986 CRIT, CRI => LOG_CRIT
6987 ERROR, ERR => LOG_ERR
6988 WARNING, WARN, WAR => LOG_WARNING
6989 NOTICE, NOTE, NOT => LOG_NOTICE
6990 INFO, INF => LOG_INFO
6991 DEBUG, DBG => LOG_DEBUG
6993 and as before, if none of those prefixes are present at the
6994 beginning of the string, LOG_ERR is chosen.
6996 On Win32, the LOG_* levels are mapped according to this:
6998 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
6999 LOG_WARNING => EVENTLOG_WARNING_TYPE
7000 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
7004 *) Made it possible to reconfigure with just the configuration
7005 argument "reconf" or "reconfigure". The command line arguments
7006 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
7007 and are retrieved from there when reconfiguring.
7011 [Assar Westerlund <assar@sics.se>, Richard Levitte]
7013 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
7016 *) The obj_dat.pl script was messing up the sorting of object
7017 names. The reason was that it compared the quoted version
7018 of strings as a result "OCSP" > "OCSP Signing" because
7019 " > SPACE. Changed script to store unquoted versions of
7020 names and add quotes on output. It was also omitting some
7021 names from the lookup table if they were given a default
7022 value (that is if SN is missing it is given the same
7023 value as LN and vice versa), these are now added on the
7024 grounds that if an object has a name we should be able to
7025 look it up. Finally added warning output when duplicate
7026 short or long names are found.
7029 *) Changes needed for Tandem NSK.
7030 [Scott Uroff <scott@xypro.com>]
7032 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
7033 RSA_padding_check_SSLv23(), special padding was never detected
7034 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
7035 version rollback attacks was not effective.
7037 In s23_clnt.c, don't use special rollback-attack detection padding
7038 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
7039 client; similarly, in s23_srvr.c, don't do the rollback check if
7040 SSL 2.0 is the only protocol enabled in the server.
7043 *) Make it possible to get hexdumps of unprintable data with 'openssl
7044 asn1parse'. By implication, the functions ASN1_parse_dump() and
7045 BIO_dump_indent() are added.
7048 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
7049 these print out strings and name structures based on various
7050 flags including RFC2253 support and proper handling of
7051 multibyte characters. Added options to the 'x509' utility
7052 to allow the various flags to be set.
7055 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
7056 Also change the functions X509_cmp_current_time() and
7057 X509_gmtime_adj() work with an ASN1_TIME structure,
7058 this will enable certificates using GeneralizedTime in validity
7059 dates to be checked.
7062 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
7063 negative public key encodings) on by default,
7064 NO_NEG_PUBKEY_BUG can be set to disable it.
7067 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
7068 content octets. An i2c_ASN1_OBJECT is unnecessary because
7069 the encoding can be trivially obtained from the structure.
7072 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
7073 not read locks (CRYPTO_r_[un]lock).
7076 *) A first attempt at creating official support for shared
7077 libraries through configuration. I've kept it so the
7078 default is static libraries only, and the OpenSSL programs
7079 are always statically linked for now, but there are
7080 preparations for dynamic linking in place.
7081 This has been tested on Linux and Tru64.
7084 *) Randomness polling function for Win9x, as described in:
7085 Peter Gutmann, Software Generation of Practically Strong
7089 *) Fix so PRNG is seeded in req if using an already existing
7093 *) New options to smime application. -inform and -outform
7094 allow alternative formats for the S/MIME message including
7095 PEM and DER. The -content option allows the content to be
7096 specified separately. This should allow things like Netscape
7097 form signing output easier to verify.
7100 *) Fix the ASN1 encoding of tags using the 'long form'.
7103 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
7104 STRING types. These convert content octets to and from the
7105 underlying type. The actual tag and length octets are
7106 already assumed to have been read in and checked. These
7107 are needed because all other string types have virtually
7108 identical handling apart from the tag. By having versions
7109 of the ASN1 functions that just operate on content octets
7110 IMPLICIT tagging can be handled properly. It also allows
7111 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
7112 and ASN1_INTEGER are identical apart from the tag.
7115 *) Change the handling of OID objects as follows:
7117 - New object identifiers are inserted in objects.txt, following
7118 the syntax given in objects.README.
7119 - objects.pl is used to process obj_mac.num and create a new
7121 - obj_dat.pl is used to create a new obj_dat.h, using the data in
7124 This is currently kind of a hack, and the perl code in objects.pl
7125 isn't very elegant, but it works as I intended. The simplest way
7126 to check that it worked correctly is to look in obj_dat.h and
7127 check the array nid_objs and make sure the objects haven't moved
7128 around (this is important!). Additions are OK, as well as
7129 consistent name changes.
7132 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
7135 *) Addition of the command line parameter '-rand file' to 'openssl req'.
7136 The given file adds to whatever has already been seeded into the
7137 random pool through the RANDFILE configuration file option or
7138 environment variable, or the default random state file.
7141 *) mkstack.pl now sorts each macro group into lexical order.
7142 Previously the output order depended on the order the files
7143 appeared in the directory, resulting in needless rewriting
7147 *) Patches to make OpenSSL compile under Win32 again. Mostly
7148 work arounds for the VC++ problem that it treats func() as
7149 func(void). Also stripped out the parts of mkdef.pl that
7150 added extra typesafe functions: these no longer exist.
7153 *) Reorganisation of the stack code. The macros are now all
7154 collected in safestack.h . Each macro is defined in terms of
7155 a "stack macro" of the form SKM_<name>(type, a, b). The
7156 DEBUG_SAFESTACK is now handled in terms of function casts,
7157 this has the advantage of retaining type safety without the
7158 use of additional functions. If DEBUG_SAFESTACK is not defined
7159 then the non typesafe macros are used instead. Also modified the
7160 mkstack.pl script to handle the new form. Needs testing to see
7161 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
7162 the default if no major problems. Similar behaviour for ASN1_SET_OF
7163 and PKCS12_STACK_OF.
7166 *) When some versions of IIS use the 'NET' form of private key the
7167 key derivation algorithm is different. Normally MD5(password) is
7168 used as a 128 bit RC4 key. In the modified case
7169 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
7170 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
7171 as the old Netscape_RSA functions except they have an additional
7172 'sgckey' parameter which uses the modified algorithm. Also added
7173 an -sgckey command line option to the rsa utility. Thanks to
7174 Adrian Peck <bertie@ncipher.com> for posting details of the modified
7175 algorithm to openssl-dev.
7178 *) The evp_local.h macros were using 'c.##kname' which resulted in
7179 invalid expansion on some systems (SCO 5.0.5 for example).
7180 Corrected to 'c.kname'.
7181 [Phillip Porch <root@theporch.com>]
7183 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
7184 a STACK of email addresses from a certificate or request, these look
7185 in the subject name and the subject alternative name extensions and
7186 omit any duplicate addresses.
7189 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
7190 This makes DSA verification about 2 % faster.
7193 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
7194 (meaning that now 2^5 values will be precomputed, which is only 4 KB
7195 plus overhead for 1024 bit moduli).
7196 This makes exponentiations about 0.5 % faster for 1024 bit
7197 exponents (as measured by "openssl speed rsa2048").
7200 *) Rename memory handling macros to avoid conflicts with other
7202 Malloc => OPENSSL_malloc
7203 Malloc_locked => OPENSSL_malloc_locked
7204 Realloc => OPENSSL_realloc
7205 Free => OPENSSL_free
7208 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
7209 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
7212 *) CygWin32 support.
7213 [John Jarvie <jjarvie@newsguy.com>]
7215 *) The type-safe stack code has been rejigged. It is now only compiled
7216 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
7217 by default all type-specific stack functions are "#define"d back to
7218 standard stack functions. This results in more streamlined output
7219 but retains the type-safety checking possibilities of the original
7223 *) The STACK code has been cleaned up, and certain type declarations
7224 that didn't make a lot of sense have been brought in line. This has
7225 also involved a cleanup of sorts in safestack.h to more correctly
7226 map type-safe stack functions onto their plain stack counterparts.
7227 This work has also resulted in a variety of "const"ifications of
7228 lots of the code, especially "_cmp" operations which should normally
7229 be prototyped with "const" parameters anyway.
7232 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
7233 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
7234 (The PRNG state consists of two parts, the large pool 'state' and 'md',
7235 where all of 'md' is used each time the PRNG is used, but 'state'
7236 is used only indexed by a cyclic counter. As entropy may not be
7237 well distributed from the beginning, 'md' is important as a
7238 chaining variable. However, the output function chains only half
7239 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
7240 all of 'md', and seeding with STATE_SIZE dummy bytes will result
7241 in all of 'state' being rewritten, with the new values depending
7242 on virtually all of 'md'. This overcomes the 80 bit limitation.)
7245 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
7246 the handshake is continued after ssl_verify_cert_chain();
7247 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
7248 can lead to 'unexplainable' connection aborts later.
7249 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
7251 *) Major EVP API cipher revision.
7252 Add hooks for extra EVP features. This allows various cipher
7253 parameters to be set in the EVP interface. Support added for variable
7254 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
7255 setting of RC2 and RC5 parameters.
7257 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
7260 Remove lots of duplicated code from the EVP library. For example *every*
7261 cipher init() function handles the 'iv' in the same way according to the
7262 cipher mode. They also all do nothing if the 'key' parameter is NULL and
7263 for CFB and OFB modes they zero ctx->num.
7265 New functionality allows removal of S/MIME code RC2 hack.
7267 Most of the routines have the same form and so can be declared in terms
7270 By shifting this to the top level EVP_CipherInit() it can be removed from
7271 all individual ciphers. If the cipher wants to handle IVs or keys
7272 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
7275 Change lots of functions like EVP_EncryptUpdate() to now return a
7276 value: although software versions of the algorithms cannot fail
7277 any installed hardware versions can.
7280 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
7281 this option is set, tolerate broken clients that send the negotiated
7282 protocol version number instead of the requested protocol version
7286 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
7287 i.e. non-zero for export ciphersuites, zero otherwise.
7288 Previous versions had this flag inverted, inconsistent with
7289 rsa_tmp_cb (..._TMP_RSA_CB).
7290 [Bodo Moeller; problem reported by Amit Chopra]
7292 *) Add missing DSA library text string. Work around for some IIS
7293 key files with invalid SEQUENCE encoding.
7296 *) Add a document (doc/standards.txt) that list all kinds of standards
7297 and so on that are implemented in OpenSSL.
7300 *) Enhance c_rehash script. Old version would mishandle certificates
7301 with the same subject name hash and wouldn't handle CRLs at all.
7302 Added -fingerprint option to crl utility, to support new c_rehash
7306 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
7309 *) Fix for SSL server purpose checking. Server checking was
7310 rejecting certificates which had extended key usage present
7311 but no ssl client purpose.
7312 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
7314 *) Make PKCS#12 code work with no password. The PKCS#12 spec
7315 is a little unclear about how a blank password is handled.
7316 Since the password in encoded as a BMPString with terminating
7317 double NULL a zero length password would end up as just the
7318 double NULL. However no password at all is different and is
7319 handled differently in the PKCS#12 key generation code. NS
7320 treats a blank password as zero length. MSIE treats it as no
7321 password on export: but it will try both on import. We now do
7322 the same: PKCS12_parse() tries zero length and no password if
7323 the password is set to "" or NULL (NULL is now a valid password:
7324 it wasn't before) as does the pkcs12 application.
7327 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
7328 perror when PEM_read_bio_X509_REQ fails, the error message must
7329 be obtained from the error queue.
7332 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
7333 it in ERR_remove_state if appropriate, and change ERR_get_state
7334 accordingly to avoid race conditions (this is necessary because
7335 thread_hash is no longer constant once set).
7338 *) Bugfix for linux-elf makefile.one.
7341 *) RSA_get_default_method() will now cause a default
7342 RSA_METHOD to be chosen if one doesn't exist already.
7343 Previously this was only set during a call to RSA_new()
7344 or RSA_new_method(NULL) meaning it was possible for
7345 RSA_get_default_method() to return NULL.
7348 *) Added native name translation to the existing DSO code
7349 that will convert (if the flag to do so is set) filenames
7350 that are sufficiently small and have no path information
7351 into a canonical native form. Eg. "blah" converted to
7352 "libblah.so" or "blah.dll" etc.
7355 *) New function ERR_error_string_n(e, buf, len) which is like
7356 ERR_error_string(e, buf), but writes at most 'len' bytes
7357 including the 0 terminator. For ERR_error_string_n, 'buf'
7359 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
7361 *) CONF library reworked to become more general. A new CONF
7362 configuration file reader "class" is implemented as well as a
7363 new functions (NCONF_*, for "New CONF") to handle it. The now
7364 old CONF_* functions are still there, but are reimplemented to
7365 work in terms of the new functions. Also, a set of functions
7366 to handle the internal storage of the configuration data is
7367 provided to make it easier to write new configuration file
7368 reader "classes" (I can definitely see something reading a
7369 configuration file in XML format, for example), called _CONF_*,
7370 or "the configuration storage API"...
7372 The new configuration file reading functions are:
7374 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
7375 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
7377 NCONF_default, NCONF_WIN32
7379 NCONF_dump_fp, NCONF_dump_bio
7381 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
7382 NCONF_new creates a new CONF object. This works in the same way
7383 as other interfaces in OpenSSL, like the BIO interface.
7384 NCONF_dump_* dump the internal storage of the configuration file,
7385 which is useful for debugging. All other functions take the same
7386 arguments as the old CONF_* functions wth the exception of the
7387 first that must be a `CONF *' instead of a `LHASH *'.
7389 To make it easer to use the new classes with the old CONF_* functions,
7390 the function CONF_set_default_method is provided.
7393 *) Add '-tls1' option to 'openssl ciphers', which was already
7394 mentioned in the documentation but had not been implemented.
7395 (This option is not yet really useful because even the additional
7396 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
7399 *) Initial DSO code added into libcrypto for letting OpenSSL (and
7400 OpenSSL-based applications) load shared libraries and bind to
7401 them in a portable way.
7402 [Geoff Thorpe, with contributions from Richard Levitte]
7404 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
7406 *) Make sure _lrotl and _lrotr are only used with MSVC.
7408 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
7409 (the default implementation of RAND_status).
7411 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
7412 to '-clrext' (= clear extensions), as intended and documented.
7413 [Bodo Moeller; inconsistency pointed out by Michael Attili
7416 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
7417 was larger than the MD block size.
7418 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
7420 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
7421 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
7422 using the passed key: if the passed key was a private key the result
7423 of X509_print(), for example, would be to print out all the private key
7427 *) des_quad_cksum() byte order bug fix.
7428 [Ulf Möller, using the problem description in krb4-0.9.7, where
7429 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
7431 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
7433 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
7435 *) For easily testing in shell scripts whether some command
7436 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
7437 returns with exit code 0 iff no command of the given name is available.
7438 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
7439 the output goes to stdout and nothing is printed to stderr.
7440 Additional arguments are always ignored.
7442 Since for each cipher there is a command of the same name,
7443 the 'no-cipher' compilation switches can be tested this way.
7445 ('openssl no-XXX' is not able to detect pseudo-commands such
7446 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
7449 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
7452 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
7453 is set; it will be thrown away anyway because each handshake creates
7455 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
7456 to parameters -- in previous versions (since OpenSSL 0.9.3) the
7457 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
7458 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
7461 *) New s_client option -ign_eof: EOF at stdin is ignored, and
7462 'Q' and 'R' lose their special meanings (quit/renegotiate).
7463 This is part of what -quiet does; unlike -quiet, -ign_eof
7464 does not suppress any output.
7467 *) Add compatibility options to the purpose and trust code. The
7468 purpose X509_PURPOSE_ANY is "any purpose" which automatically
7469 accepts a certificate or CA, this was the previous behaviour,
7470 with all the associated security issues.
7472 X509_TRUST_COMPAT is the old trust behaviour: only and
7473 automatically trust self signed roots in certificate store. A
7474 new trust setting X509_TRUST_DEFAULT is used to specify that
7475 a purpose has no associated trust setting and it should instead
7476 use the value in the default purpose.
7479 *) Fix the PKCS#8 DSA private key code so it decodes keys again
7480 and fix a memory leak.
7483 *) In util/mkerr.pl (which implements 'make errors'), preserve
7484 reason strings from the previous version of the .c file, as
7485 the default to have only downcase letters (and digits) in
7486 automatically generated reasons codes is not always appropriate.
7489 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
7490 using strerror. Previously, ERR_reason_error_string() returned
7491 library names as reason strings for SYSerr; but SYSerr is a special
7492 case where small numbers are errno values, not library numbers.
7495 *) Add '-dsaparam' option to 'openssl dhparam' application. This
7496 converts DSA parameters into DH parameters. (When creating parameters,
7497 DSA_generate_parameters is used.)
7500 *) Include 'length' (recommended exponent length) in C code generated
7501 by 'openssl dhparam -C'.
7504 *) The second argument to set_label in perlasm was already being used
7505 so couldn't be used as a "file scope" flag. Moved to third argument
7509 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
7510 instead of RAND_bytes for encryption IVs and salts.
7513 *) Include RAND_status() into RAND_METHOD instead of implementing
7514 it only for md_rand.c Otherwise replacing the PRNG by calling
7515 RAND_set_rand_method would be impossible.
7518 *) Don't let DSA_generate_key() enter an infinite loop if the random
7519 number generation fails.
7522 *) New 'rand' application for creating pseudo-random output.
7525 *) Added configuration support for Linux/IA64
7526 [Rolf Haberrecker <rolf@suse.de>]
7528 *) Assembler module support for Mingw32.
7531 *) Shared library support for HPUX (in shlib/).
7532 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
7534 *) Shared library support for Solaris gcc.
7535 [Lutz Behnke <behnke@trustcenter.de>]
7537 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
7539 *) PKCS7_encrypt() was adding text MIME headers twice because they
7540 were added manually and by SMIME_crlf_copy().
7543 *) In bntest.c don't call BN_rand with zero bits argument.
7544 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
7546 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
7547 case was implemented. This caused BN_div_recp() to fail occasionally.
7550 *) Add an optional second argument to the set_label() in the perl
7551 assembly language builder. If this argument exists and is set
7552 to 1 it signals that the assembler should use a symbol whose
7553 scope is the entire file, not just the current function. This
7554 is needed with MASM which uses the format label:: for this scope.
7555 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
7557 *) Change the ASN1 types so they are typedefs by default. Before
7558 almost all types were #define'd to ASN1_STRING which was causing
7559 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
7563 *) Change names of new functions to the new get1/get0 naming
7564 convention: After 'get1', the caller owns a reference count
7565 and has to call ..._free; 'get0' returns a pointer to some
7566 data structure without incrementing reference counters.
7567 (Some of the existing 'get' functions increment a reference
7568 counter, some don't.)
7569 Similarly, 'set1' and 'add1' functions increase reference
7570 counters or duplicate objects.
7573 *) Allow for the possibility of temp RSA key generation failure:
7574 the code used to assume it always worked and crashed on failure.
7577 *) Fix potential buffer overrun problem in BIO_printf().
7578 [Ulf Möller, using public domain code by Patrick Powell; problem
7579 pointed out by David Sacerdote <das33@cornell.edu>]
7581 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
7582 RAND_egd() and RAND_status(). In the command line application,
7583 the EGD socket can be specified like a seed file using RANDFILE
7587 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
7588 Some CAs (e.g. Verisign) distribute certificates in this form.
7591 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
7592 list to exclude them. This means that no special compilation option
7593 is needed to use anonymous DH: it just needs to be included in the
7597 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
7598 EVP_MD_type. The old functionality is available in a new macro called
7599 EVP_MD_md(). Change code that uses it and update docs.
7602 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
7603 where the 'void *' argument is replaced by a function pointer argument.
7604 Previously 'void *' was abused to point to functions, which works on
7605 many platforms, but is not correct. As these functions are usually
7606 called by macros defined in OpenSSL header files, most source code
7607 should work without changes.
7610 *) <openssl/opensslconf.h> (which is created by Configure) now contains
7611 sections with information on -D... compiler switches used for
7612 compiling the library so that applications can see them. To enable
7613 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
7614 must be defined. E.g.,
7615 #define OPENSSL_ALGORITHM_DEFINES
7616 #include <openssl/opensslconf.h>
7617 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
7618 [Richard Levitte, Ulf and Bodo Möller]
7620 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
7624 *) Change the 'other' type in certificate aux info to a STACK_OF
7625 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
7626 the required ASN1 format: arbitrary types determined by an OID.
7629 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
7630 argument to 'req'. This is not because the function is newer or
7631 better than others it just uses the work 'NEW' in the certificate
7632 request header lines. Some software needs this.
7635 *) Reorganise password command line arguments: now passwords can be
7636 obtained from various sources. Delete the PEM_cb function and make
7637 it the default behaviour: i.e. if the callback is NULL and the
7638 usrdata argument is not NULL interpret it as a null terminated pass
7639 phrase. If usrdata and the callback are NULL then the pass phrase
7640 is prompted for as usual.
7643 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
7644 the support is automatically enabled. The resulting binaries will
7645 autodetect the card and use it if present.
7646 [Ben Laurie and Compaq Inc.]
7648 *) Work around for Netscape hang bug. This sends certificate request
7649 and server done in one record. Since this is perfectly legal in the
7650 SSL/TLS protocol it isn't a "bug" option and is on by default. See
7651 the bugs/SSLv3 entry for more info.
7654 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
7657 *) Add -rand argument to smime and pkcs12 applications and read/write
7661 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
7664 *) Add command line password options to the remaining applications.
7667 *) Bug fix for BN_div_recp() for numerators with an even number of
7671 *) More tests in bntest.c, and changed test_bn output.
7674 *) ./config recognizes MacOS X now.
7677 *) Bug fix for BN_div() when the first words of num and divsor are
7678 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
7681 *) Add support for various broken PKCS#8 formats, and command line
7682 options to produce them.
7685 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
7686 get temporary BIGNUMs from a BN_CTX.
7689 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
7693 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
7694 include a #define from the old name to the new. The original intent
7695 was that statically linked binaries could for example just call
7696 SSLeay_add_all_ciphers() to just add ciphers to the table and not
7697 link with digests. This never worked becayse SSLeay_add_all_digests()
7698 and SSLeay_add_all_ciphers() were in the same source file so calling
7699 one would link with the other. They are now in separate source files.
7702 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
7705 *) Use a less unusual form of the Miller-Rabin primality test (it used
7706 a binary algorithm for exponentiation integrated into the Miller-Rabin
7707 loop, our standard modexp algorithms are faster).
7710 *) Support for the EBCDIC character set completed.
7711 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
7713 *) Source code cleanups: use const where appropriate, eliminate casts,
7714 use void * instead of char * in lhash.
7717 *) Bugfix: ssl3_send_server_key_exchange was not restartable
7718 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
7719 this the server could overwrite ephemeral keys that the client
7723 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
7724 using 50 iterations of the Rabin-Miller test.
7726 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
7727 iterations of the Rabin-Miller test as required by the appendix
7728 to FIPS PUB 186[-1]) instead of DSA_is_prime.
7729 As BN_is_prime_fasttest includes trial division, DSA parameter
7730 generation becomes much faster.
7732 This implies a change for the callback functions in DSA_is_prime
7733 and DSA_generate_parameters: The callback function is called once
7734 for each positive witness in the Rabin-Miller test, not just
7735 occasionally in the inner loop; and the parameters to the
7736 callback function now provide an iteration count for the outer
7737 loop rather than for the current invocation of the inner loop.
7738 DSA_generate_parameters additionally can call the callback
7739 function with an 'iteration count' of -1, meaning that a
7740 candidate has passed the trial division test (when q is generated
7741 from an application-provided seed, trial division is skipped).
7744 *) New function BN_is_prime_fasttest that optionally does trial
7745 division before starting the Rabin-Miller test and has
7746 an additional BN_CTX * argument (whereas BN_is_prime always
7747 has to allocate at least one BN_CTX).
7748 'callback(1, -1, cb_arg)' is called when a number has passed the
7749 trial division stage.
7752 *) Fix for bug in CRL encoding. The validity dates weren't being handled
7756 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
7759 *) New function BN_pseudo_rand().
7762 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
7763 bignum version of BN_from_montgomery() with the working code from
7764 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
7768 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
7769 made it impossible to use the same SSL_SESSION data structure in
7770 SSL2 clients in multiple threads.
7773 *) The return value of RAND_load_file() no longer counts bytes obtained
7774 by stat(). RAND_load_file(..., -1) is new and uses the complete file
7775 to seed the PRNG (previously an explicit byte count was required).
7776 [Ulf Möller, Bodo Möller]
7778 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
7779 used (char *) instead of (void *) and had casts all over the place.
7782 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
7785 *) Retain source code compatibility for BN_prime_checks macro:
7786 BN_is_prime(..., BN_prime_checks, ...) now uses
7787 BN_prime_checks_for_size to determine the appropriate number of
7788 Rabin-Miller iterations.
7791 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
7792 DH_CHECK_P_NOT_SAFE_PRIME.
7793 (Check if this is true? OpenPGP calls them "strong".)
7796 *) Merge the functionality of "dh" and "gendh" programs into a new program
7797 "dhparam". The old programs are retained for now but will handle DH keys
7798 (instead of parameters) in future.
7801 *) Make the ciphers, s_server and s_client programs check the return values
7802 when a new cipher list is set.
7805 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
7806 ciphers. Before when the 56bit ciphers were enabled the sorting was
7809 The syntax for the cipher sorting has been extended to support sorting by
7810 cipher-strength (using the strength_bits hard coded in the tables).
7811 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
7813 Fix a bug in the cipher-command parser: when supplying a cipher command
7814 string with an "undefined" symbol (neither command nor alphanumeric
7815 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
7816 an error is flagged.
7818 Due to the strength-sorting extension, the code of the
7819 ssl_create_cipher_list() function was completely rearranged. I hope that
7820 the readability was also increased :-)
7821 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7823 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
7824 for the first serial number and places 2 in the serial number file. This
7825 avoids problems when the root CA is created with serial number zero and
7826 the first user certificate has the same issuer name and serial number
7830 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
7831 the new code. Add documentation for this stuff.
7834 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
7835 X509_*() to X509at_*() on the grounds that they don't handle X509
7836 structures and behave in an analagous way to the X509v3 functions:
7837 they shouldn't be called directly but wrapper functions should be used
7840 So we also now have some wrapper functions that call the X509at functions
7841 when passed certificate requests. (TO DO: similar things can be done with
7842 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
7843 things. Some of these need some d2i or i2d and print functionality
7844 because they handle more complex structures.)
7847 *) Add missing #ifndefs that caused missing symbols when building libssl
7848 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
7849 NO_RSA in ssl/s2*.c.
7850 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
7852 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
7853 has a return value which indicates the quality of the random data
7854 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
7855 error queue. New function RAND_pseudo_bytes() generates output that is
7856 guaranteed to be unique but not unpredictable. RAND_add is like
7857 RAND_seed, but takes an extra argument for an entropy estimate
7858 (RAND_seed always assumes full entropy).
7861 *) Do more iterations of Rabin-Miller probable prime test (specifically,
7862 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
7863 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
7864 in crypto/bn/bn_prime.c for the complete table). This guarantees a
7865 false-positive rate of at most 2^-80 for random input.
7868 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
7871 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
7872 in the 0.9.5 release), this returns the chain
7873 from an X509_CTX structure with a dup of the stack and all
7874 the X509 reference counts upped: so the stack will exist
7875 after X509_CTX_cleanup() has been called. Modify pkcs12.c
7878 Also make SSL_SESSION_print() print out the verify return
7882 *) Add manpage for the pkcs12 command. Also change the default
7883 behaviour so MAC iteration counts are used unless the new
7884 -nomaciter option is used. This improves file security and
7885 only older versions of MSIE (4.0 for example) need it.
7888 *) Honor the no-xxx Configure options when creating .DEF files.
7891 *) Add PKCS#10 attributes to field table: challengePassword,
7892 unstructuredName and unstructuredAddress. These are taken from
7893 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
7894 international characters are used.
7896 More changes to X509_ATTRIBUTE code: allow the setting of types
7897 based on strings. Remove the 'loc' parameter when adding
7898 attributes because these will be a SET OF encoding which is sorted
7902 *) Initial changes to the 'req' utility to allow request generation
7903 automation. This will allow an application to just generate a template
7904 file containing all the field values and have req construct the
7907 Initial support for X509_ATTRIBUTE handling. Stacks of these are
7908 used all over the place including certificate requests and PKCS#7
7909 structures. They are currently handled manually where necessary with
7910 some primitive wrappers for PKCS#7. The new functions behave in a
7911 manner analogous to the X509 extension functions: they allow
7912 attributes to be looked up by NID and added.
7914 Later something similar to the X509V3 code would be desirable to
7915 automatically handle the encoding, decoding and printing of the
7916 more complex types. The string types like challengePassword can
7917 be handled by the string table functions.
7919 Also modified the multi byte string table handling. Now there is
7920 a 'global mask' which masks out certain types. The table itself
7921 can use the flag STABLE_NO_MASK to ignore the mask setting: this
7922 is useful when for example there is only one permissible type
7923 (as in countryName) and using the mask might result in no valid
7927 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
7928 SSL_get_peer_finished to allow applications to obtain the latest
7929 Finished messages sent to the peer or expected from the peer,
7930 respectively. (SSL_get_peer_finished is usually the Finished message
7931 actually received from the peer, otherwise the protocol will be aborted.)
7933 As the Finished message are message digests of the complete handshake
7934 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
7935 be used for external authentication procedures when the authentication
7936 provided by SSL/TLS is not desired or is not enough.
7939 *) Enhanced support for Alpha Linux is added. Now ./config checks if
7940 the host supports BWX extension and if Compaq C is present on the
7941 $PATH. Just exploiting of the BWX extension results in 20-30%
7942 performance kick for some algorithms, e.g. DES and RC4 to mention
7943 a couple. Compaq C in turn generates ~20% faster code for MD5 and
7947 *) Add support for MS "fast SGC". This is arguably a violation of the
7948 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
7949 weak crypto and after checking the certificate is SGC a second one
7950 with strong crypto. MS SGC stops the first handshake after receiving
7951 the server certificate message and sends a second client hello. Since
7952 a server will typically do all the time consuming operations before
7953 expecting any further messages from the client (server key exchange
7954 is the most expensive) there is little difference between the two.
7956 To get OpenSSL to support MS SGC we have to permit a second client
7957 hello message after we have sent server done. In addition we have to
7958 reset the MAC if we do get this second client hello.
7961 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
7962 if a DER encoded private key is RSA or DSA traditional format. Changed
7963 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
7964 format DER encoded private key. Newer code should use PKCS#8 format which
7965 has the key type encoded in the ASN1 structure. Added DER private key
7966 support to pkcs8 application.
7969 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
7970 ciphersuites has been selected (as required by the SSL 3/TLS 1
7971 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
7972 is set, we interpret this as a request to violate the specification
7973 (the worst that can happen is a handshake failure, and 'correct'
7974 behaviour would result in a handshake failure anyway).
7977 *) In SSL_CTX_add_session, take into account that there might be multiple
7978 SSL_SESSION structures with the same session ID (e.g. when two threads
7979 concurrently obtain them from an external cache).
7980 The internal cache can handle only one SSL_SESSION with a given ID,
7981 so if there's a conflict, we now throw out the old one to achieve
7985 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
7986 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
7987 some routines that use cipher OIDs: some ciphers do not have OIDs
7988 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
7992 *) Simplify the trust setting structure and code. Now we just have
7993 two sequences of OIDs for trusted and rejected settings. These will
7994 typically have values the same as the extended key usage extension
7995 and any application specific purposes.
7997 The trust checking code now has a default behaviour: it will just
7998 check for an object with the same NID as the passed id. Functions can
7999 be provided to override either the default behaviour or the behaviour
8000 for a given id. SSL client, server and email already have functions
8001 in place for compatibility: they check the NID and also return "trusted"
8002 if the certificate is self signed.
8005 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
8006 traditional format into an EVP_PKEY structure.
8009 *) Add a password callback function PEM_cb() which either prompts for
8010 a password if usr_data is NULL or otherwise assumes it is a null
8011 terminated password. Allow passwords to be passed on command line
8012 environment or config files in a few more utilities.
8015 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
8016 keys. Add some short names for PKCS#8 PBE algorithms and allow them
8017 to be specified on the command line for the pkcs8 and pkcs12 utilities.
8018 Update documentation.
8021 *) Support for ASN1 "NULL" type. This could be handled before by using
8022 ASN1_TYPE but there wasn't any function that would try to read a NULL
8023 and produce an error if it couldn't. For compatibility we also have
8024 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
8025 don't allocate anything because they don't need to.
8028 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
8030 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
8032 *) Rebuild of the memory allocation routines used by OpenSSL code and
8033 possibly others as well. The purpose is to make an interface that
8034 provide hooks so anyone can build a separate set of allocation and
8035 deallocation routines to be used by OpenSSL, for example memory
8036 pool implementations, or something else, which was previously hard
8037 since Malloc(), Realloc() and Free() were defined as macros having
8038 the values malloc, realloc and free, respectively (except for Win32
8039 compilations). The same is provided for memory debugging code.
8040 OpenSSL already comes with functionality to find memory leaks, but
8041 this gives people a chance to debug other memory problems.
8043 With these changes, a new set of functions and macros have appeared:
8045 CRYPTO_set_mem_debug_functions() [F]
8046 CRYPTO_get_mem_debug_functions() [F]
8047 CRYPTO_dbg_set_options() [F]
8048 CRYPTO_dbg_get_options() [F]
8049 CRYPTO_malloc_debug_init() [M]
8051 The memory debug functions are NULL by default, unless the library
8052 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
8053 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
8054 gives the standard debugging functions that come with OpenSSL) or
8055 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
8056 provided by the library user) must be used. When the standard
8057 debugging functions are used, CRYPTO_dbg_set_options can be used to
8058 request additional information:
8059 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
8060 the CRYPTO_MDEBUG_xxx macro when compiling the library.
8062 Also, things like CRYPTO_set_mem_functions will always give the
8063 expected result (the new set of functions is used for allocation
8064 and deallocation) at all times, regardless of platform and compiler
8067 To finish it up, some functions that were never use in any other
8068 way than through macros have a new API and new semantic:
8071 CRYPTO_dbg_realloc()
8074 All macros of value have retained their old syntax.
8075 [Richard Levitte and Bodo Moeller]
8077 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
8078 ordering of SMIMECapabilities wasn't in "strength order" and there
8079 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
8083 *) Some ASN1 types with illegal zero length encoding (INTEGER,
8084 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
8085 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
8087 *) Merge in my S/MIME library for OpenSSL. This provides a simple
8088 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
8089 functionality to handle multipart/signed properly) and a utility
8090 called 'smime' to call all this stuff. This is based on code I
8091 originally wrote for Celo who have kindly allowed it to be
8092 included in OpenSSL.
8095 *) Add variants des_set_key_checked and des_set_key_unchecked of
8096 des_set_key (aka des_key_sched). Global variable des_check_key
8097 decides which of these is called by des_set_key; this way
8098 des_check_key behaves as it always did, but applications and
8099 the library itself, which was buggy for des_check_key == 1,
8100 have a cleaner way to pick the version they need.
8103 *) New function PKCS12_newpass() which changes the password of a
8107 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
8108 dynamic mix. In both cases the ids can be used as an index into the
8109 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
8110 functions so they accept a list of the field values and the
8111 application doesn't need to directly manipulate the X509_TRUST
8115 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
8119 *) Modify the way the V3 extension code looks up extensions. This now
8120 works in a similar way to the object code: we have some "standard"
8121 extensions in a static table which is searched with OBJ_bsearch()
8122 and the application can add dynamic ones if needed. The file
8123 crypto/x509v3/ext_dat.h now has the info: this file needs to be
8124 updated whenever a new extension is added to the core code and kept
8125 in ext_nid order. There is a simple program 'tabtest.c' which checks
8126 this. New extensions are not added too often so this file can readily
8127 be maintained manually.
8129 There are two big advantages in doing things this way. The extensions
8130 can be looked up immediately and no longer need to be "added" using
8131 X509V3_add_standard_extensions(): this function now does nothing.
8132 [Side note: I get *lots* of email saying the extension code doesn't
8133 work because people forget to call this function]
8134 Also no dynamic allocation is done unless new extensions are added:
8135 so if we don't add custom extensions there is no need to call
8136 X509V3_EXT_cleanup().
8139 *) Modify enc utility's salting as follows: make salting the default. Add a
8140 magic header, so unsalted files fail gracefully instead of just decrypting
8141 to garbage. This is because not salting is a big security hole, so people
8142 should be discouraged from doing it.
8145 *) Fixes and enhancements to the 'x509' utility. It allowed a message
8146 digest to be passed on the command line but it only used this
8147 parameter when signing a certificate. Modified so all relevant
8148 operations are affected by the digest parameter including the
8149 -fingerprint and -x509toreq options. Also -x509toreq choked if a
8150 DSA key was used because it didn't fix the digest.
8153 *) Initial certificate chain verify code. Currently tests the untrusted
8154 certificates for consistency with the verify purpose (which is set
8155 when the X509_STORE_CTX structure is set up) and checks the pathlength.
8157 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
8158 this is because it will reject chains with invalid extensions whereas
8159 every previous version of OpenSSL and SSLeay made no checks at all.
8161 Trust code: checks the root CA for the relevant trust settings. Trust
8162 settings have an initial value consistent with the verify purpose: e.g.
8163 if the verify purpose is for SSL client use it expects the CA to be
8164 trusted for SSL client use. However the default value can be changed to
8165 permit custom trust settings: one example of this would be to only trust
8166 certificates from a specific "secure" set of CAs.
8168 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
8169 which should be used for version portability: especially since the
8170 verify structure is likely to change more often now.
8172 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
8173 to set them. If not set then assume SSL clients will verify SSL servers
8176 Two new options to the verify program: -untrusted allows a set of
8177 untrusted certificates to be passed in and -purpose which sets the
8178 intended purpose of the certificate. If a purpose is set then the
8179 new chain verify code is used to check extension consistency.
8182 *) Support for the authority information access extension.
8185 *) Modify RSA and DSA PEM read routines to transparently handle
8186 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
8187 public keys in a format compatible with certificate
8188 SubjectPublicKeyInfo structures. Unfortunately there were already
8189 functions called *_PublicKey_* which used various odd formats so
8190 these are retained for compatibility: however the DSA variants were
8191 never in a public release so they have been deleted. Changed dsa/rsa
8192 utilities to handle the new format: note no releases ever handled public
8193 keys so we should be OK.
8195 The primary motivation for this change is to avoid the same fiasco
8196 that dogs private keys: there are several incompatible private key
8197 formats some of which are standard and some OpenSSL specific and
8198 require various evil hacks to allow partial transparent handling and
8199 even then it doesn't work with DER formats. Given the option anything
8200 other than PKCS#8 should be dumped: but the other formats have to
8201 stay in the name of compatibility.
8203 With public keys and the benefit of hindsight one standard format
8204 is used which works with EVP_PKEY, RSA or DSA structures: though
8205 it clearly returns an error if you try to read the wrong kind of key.
8207 Added a -pubkey option to the 'x509' utility to output the public key.
8208 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
8209 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
8210 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
8211 that do the same as the EVP_PKEY_assign_*() except they up the
8212 reference count of the added key (they don't "swallow" the
8216 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
8217 CRLs would fail if the file contained no certificates or no CRLs:
8218 added a new function to read in both types and return the number
8219 read: this means that if none are read it will be an error. The
8220 DER versions of the certificate and CRL reader would always fail
8221 because it isn't possible to mix certificates and CRLs in DER format
8222 without choking one or the other routine. Changed this to just read
8223 a certificate: this is the best we can do. Also modified the code
8224 in apps/verify.c to take notice of return codes: it was previously
8225 attempting to read in certificates from NULL pointers and ignoring
8226 any errors: this is one reason why the cert and CRL reader seemed
8227 to work. It doesn't check return codes from the default certificate
8228 routines: these may well fail if the certificates aren't installed.
8231 *) Code to support otherName option in GeneralName.
8234 *) First update to verify code. Change the verify utility
8235 so it warns if it is passed a self signed certificate:
8236 for consistency with the normal behaviour. X509_verify
8237 has been modified to it will now verify a self signed
8238 certificate if *exactly* the same certificate appears
8239 in the store: it was previously impossible to trust a
8240 single self signed certificate. This means that:
8241 openssl verify ss.pem
8242 now gives a warning about a self signed certificate but
8243 openssl verify -CAfile ss.pem ss.pem
8247 *) For servers, store verify_result in SSL_SESSION data structure
8248 (and add it to external session representation).
8249 This is needed when client certificate verifications fails,
8250 but an application-provided verification callback (set by
8251 SSL_CTX_set_cert_verify_callback) allows accepting the session
8252 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
8253 but returns 1): When the session is reused, we have to set
8254 ssl->verify_result to the appropriate error code to avoid
8256 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
8258 *) Fix a bug in the new PKCS#7 code: it didn't consider the
8259 case in PKCS7_dataInit() where the signed PKCS7 structure
8260 didn't contain any existing data because it was being created.
8261 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
8263 *) Add a salt to the key derivation routines in enc.c. This
8264 forms the first 8 bytes of the encrypted file. Also add a
8265 -S option to allow a salt to be input on the command line.
8268 *) New function X509_cmp(). Oddly enough there wasn't a function
8269 to compare two certificates. We do this by working out the SHA1
8270 hash and comparing that. X509_cmp() will be needed by the trust
8274 *) SSL_get1_session() is like SSL_get_session(), but increments
8275 the reference count in the SSL_SESSION returned.
8276 [Geoff Thorpe <geoff@eu.c2.net>]
8278 *) Fix for 'req': it was adding a null to request attributes.
8279 Also change the X509_LOOKUP and X509_INFO code to handle
8280 certificate auxiliary information.
8283 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
8287 *) Add the possibility to add extra information to the memory leak
8288 detecting output, to form tracebacks, showing from where each
8289 allocation was originated: CRYPTO_push_info("constant string") adds
8290 the string plus current file name and line number to a per-thread
8291 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
8292 is like calling CYRPTO_pop_info() until the stack is empty.
8293 Also updated memory leak detection code to be multi-thread-safe.
8296 *) Add options -text and -noout to pkcs7 utility and delete the
8297 encryption options which never did anything. Update docs.
8300 *) Add options to some of the utilities to allow the pass phrase
8301 to be included on either the command line (not recommended on
8302 OSes like Unix) or read from the environment. Update the
8303 manpages and fix a few bugs.
8306 *) Add a few manpages for some of the openssl commands.
8309 *) Fix the -revoke option in ca. It was freeing up memory twice,
8310 leaking and not finding already revoked certificates.
8313 *) Extensive changes to support certificate auxiliary information.
8314 This involves the use of X509_CERT_AUX structure and X509_AUX
8315 functions. An X509_AUX function such as PEM_read_X509_AUX()
8316 can still read in a certificate file in the usual way but it
8317 will also read in any additional "auxiliary information". By
8318 doing things this way a fair degree of compatibility can be
8319 retained: existing certificates can have this information added
8320 using the new 'x509' options.
8322 Current auxiliary information includes an "alias" and some trust
8323 settings. The trust settings will ultimately be used in enhanced
8324 certificate chain verification routines: currently a certificate
8325 can only be trusted if it is self signed and then it is trusted
8329 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
8330 The problem was that one of the replacement routines had not been working
8331 since SSLeay releases. For now the offending routine has been replaced
8332 with non-optimised assembler. Even so, this now gives around 95%
8333 performance improvement for 1024 bit RSA signs.
8336 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
8337 handling. Most clients have the effective key size in bits equal to
8338 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
8339 A few however don't do this and instead use the size of the decrypted key
8340 to determine the RC2 key length and the AlgorithmIdentifier to determine
8341 the effective key length. In this case the effective key length can still
8342 be 40 bits but the key length can be 168 bits for example. This is fixed
8343 by manually forcing an RC2 key into the EVP_PKEY structure because the
8344 EVP code can't currently handle unusual RC2 key sizes: it always assumes
8345 the key length and effective key length are equal.
8348 *) Add a bunch of functions that should simplify the creation of
8349 X509_NAME structures. Now you should be able to do:
8350 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
8351 and have it automatically work out the correct field type and fill in
8352 the structures. The more adventurous can try:
8353 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
8354 and it will (hopefully) work out the correct multibyte encoding.
8357 *) Change the 'req' utility to use the new field handling and multibyte
8358 copy routines. Before the DN field creation was handled in an ad hoc
8359 way in req, ca, and x509 which was rather broken and didn't support
8360 BMPStrings or UTF8Strings. Since some software doesn't implement
8361 BMPStrings or UTF8Strings yet, they can be enabled using the config file
8362 using the dirstring_type option. See the new comment in the default
8363 openssl.cnf for more info.
8366 *) Make crypto/rand/md_rand.c more robust:
8367 - Assure unique random numbers after fork().
8368 - Make sure that concurrent threads access the global counter and
8369 md serializably so that we never lose entropy in them
8370 or use exactly the same state in multiple threads.
8371 Access to the large state is not always serializable because
8372 the additional locking could be a performance killer, and
8373 md should be large enough anyway.
8376 *) New file apps/app_rand.c with commonly needed functionality
8377 for handling the random seed file.
8379 Use the random seed file in some applications that previously did not:
8381 dsaparam -genkey (which also ignored its '-rand' option),
8384 x509 (when signing).
8385 Except on systems with /dev/urandom, it is crucial to have a random
8386 seed file at least for key creation, DSA signing, and for DH exchanges;
8387 for RSA signatures we could do without one.
8389 gendh and gendsa (unlike genrsa) used to read only the first byte
8390 of each file listed in the '-rand' option. The function as previously
8391 found in genrsa is now in app_rand.c and is used by all programs
8392 that support '-rand'.
8395 *) In RAND_write_file, use mode 0600 for creating files;
8396 don't just chmod when it may be too late.
8399 *) Report an error from X509_STORE_load_locations
8400 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
8403 *) New function ASN1_mbstring_copy() this copies a string in either
8404 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
8405 into an ASN1_STRING type. A mask of permissible types is passed
8406 and it chooses the "minimal" type to use or an error if not type
8410 *) Add function equivalents to the various macros in asn1.h. The old
8411 macros are retained with an M_ prefix. Code inside the library can
8412 use the M_ macros. External code (including the openssl utility)
8413 should *NOT* in order to be "shared library friendly".
8416 *) Add various functions that can check a certificate's extensions
8417 to see if it usable for various purposes such as SSL client,
8418 server or S/MIME and CAs of these types. This is currently
8419 VERY EXPERIMENTAL but will ultimately be used for certificate chain
8420 verification. Also added a -purpose flag to x509 utility to
8421 print out all the purposes.
8424 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
8428 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
8429 for, obtain and decode and extension and obtain its critical flag.
8430 This allows all the necessary extension code to be handled in a
8431 single function call.
8434 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
8435 platforms. See crypto/rc4/rc4_enc.c for further details.
8438 *) New -noout option to asn1parse. This causes no output to be produced
8439 its main use is when combined with -strparse and -out to extract data
8440 from a file (which may not be in ASN.1 format).
8443 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
8444 when producing the local key id.
8445 [Richard Levitte <levitte@stacken.kth.se>]
8447 *) New option -dhparam in s_server. This allows a DH parameter file to be
8448 stated explicitly. If it is not stated then it tries the first server
8449 certificate file. The previous behaviour hard coded the filename
8453 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
8454 a public key to be input or output. For example:
8455 openssl rsa -in key.pem -pubout -out pubkey.pem
8456 Also added necessary DSA public key functions to handle this.
8459 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
8460 in the message. This was handled by allowing
8461 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
8462 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
8464 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
8465 to the end of the strings whereas this didn't. This would cause problems
8466 if strings read with d2i_ASN1_bytes() were later modified.
8467 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
8469 *) Fix for base64 decode bug. When a base64 bio reads only one line of
8470 data and it contains EOF it will end up returning an error. This is
8471 caused by input 46 bytes long. The cause is due to the way base64
8472 BIOs find the start of base64 encoded data. They do this by trying a
8473 trial decode on each line until they find one that works. When they
8474 do a flag is set and it starts again knowing it can pass all the
8475 data directly through the decoder. Unfortunately it doesn't reset
8476 the context it uses. This means that if EOF is reached an attempt
8477 is made to pass two EOFs through the context and this causes the
8478 resulting error. This can also cause other problems as well. As is
8479 usual with these problems it takes *ages* to find and the fix is
8480 trivial: move one line.
8481 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
8483 *) Ugly workaround to get s_client and s_server working under Windows. The
8484 old code wouldn't work because it needed to select() on sockets and the
8485 tty (for keypresses and to see if data could be written). Win32 only
8486 supports select() on sockets so we select() with a 1s timeout on the
8487 sockets and then see if any characters are waiting to be read, if none
8488 are present then we retry, we also assume we can always write data to
8489 the tty. This isn't nice because the code then blocks until we've
8490 received a complete line of data and it is effectively polling the
8491 keyboard at 1s intervals: however it's quite a bit better than not
8492 working at all :-) A dedicated Windows application might handle this
8493 with an event loop for example.
8496 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
8497 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
8498 will be called when RSA_sign() and RSA_verify() are used. This is useful
8499 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
8500 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
8501 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
8502 This necessitated the support of an extra signature type NID_md5_sha1
8503 for SSL signatures and modifications to the SSL library to use it instead
8504 of calling RSA_public_decrypt() and RSA_private_encrypt().
8507 *) Add new -verify -CAfile and -CApath options to the crl program, these
8508 will lookup a CRL issuers certificate and verify the signature in a
8509 similar way to the verify program. Tidy up the crl program so it
8510 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
8511 less strict. It will now permit CRL extensions even if it is not
8512 a V2 CRL: this will allow it to tolerate some broken CRLs.
8515 *) Initialize all non-automatic variables each time one of the openssl
8516 sub-programs is started (this is necessary as they may be started
8517 multiple times from the "OpenSSL>" prompt).
8518 [Lennart Bang, Bodo Moeller]
8520 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
8521 removing all other RSA functionality (this is what NO_RSA does). This
8522 is so (for example) those in the US can disable those operations covered
8523 by the RSA patent while allowing storage and parsing of RSA keys and RSA
8527 *) Non-copying interface to BIO pairs.
8528 (still largely untested)
8531 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
8532 ASCII string. This was handled independently in various places before.
8535 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
8536 UTF8 strings a character at a time.
8539 *) Use client_version from client hello to select the protocol
8540 (s23_srvr.c) and for RSA client key exchange verification
8541 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
8544 *) Add various utility functions to handle SPKACs, these were previously
8545 handled by poking round in the structure internals. Added new function
8546 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
8547 print, verify and generate SPKACs. Based on an original idea from
8548 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
8551 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
8554 *) Allow the config file extension section to be overwritten on the
8555 command line. Based on an original idea from Massimiliano Pala
8556 <madwolf@comune.modena.it>. The new option is called -extensions
8557 and can be applied to ca, req and x509. Also -reqexts to override
8558 the request extensions in req and -crlexts to override the crl extensions
8562 *) Add new feature to the SPKAC handling in ca. Now you can include
8563 the same field multiple times by preceding it by "XXXX." for example:
8566 this is the same syntax as used in the req config file.
8569 *) Allow certificate extensions to be added to certificate requests. These
8570 are specified in a 'req_extensions' option of the req section of the
8571 config file. They can be printed out with the -text option to req but
8572 are otherwise ignored at present.
8575 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
8576 data read consists of only the final block it would not decrypted because
8577 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
8578 A misplaced 'break' also meant the decrypted final block might not be
8579 copied until the next read.
8582 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
8583 a few extra parameters to the DH structure: these will be useful if
8584 for example we want the value of 'q' or implement X9.42 DH.
8587 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
8588 provides hooks that allow the default DSA functions or functions on a
8589 "per key" basis to be replaced. This allows hardware acceleration and
8590 hardware key storage to be handled without major modification to the
8591 library. Also added low level modexp hooks and CRYPTO_EX structure and
8592 associated functions.
8595 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
8596 as "read only": it can't be written to and the buffer it points to will
8597 not be freed. Reading from a read only BIO is much more efficient than
8598 a normal memory BIO. This was added because there are several times when
8599 an area of memory needs to be read from a BIO. The previous method was
8600 to create a memory BIO and write the data to it, this results in two
8601 copies of the data and an O(n^2) reading algorithm. There is a new
8602 function BIO_new_mem_buf() which creates a read only memory BIO from
8603 an area of memory. Also modified the PKCS#7 routines to use read only
8607 *) Bugfix: ssl23_get_client_hello did not work properly when called in
8608 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
8609 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
8610 but a retry condition occured while trying to read the rest.
8613 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
8614 NID_pkcs7_encrypted by default: this was wrong since this should almost
8615 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
8616 the encrypted data type: this is a more sensible place to put it and it
8617 allows the PKCS#12 code to be tidied up that duplicated this
8621 *) Changed obj_dat.pl script so it takes its input and output files on
8622 the command line. This should avoid shell escape redirection problems
8626 *) Initial support for certificate extension requests, these are included
8627 in things like Xenroll certificate requests. Included functions to allow
8628 extensions to be obtained and added.
8631 *) -crlf option to s_client and s_server for sending newlines as
8632 CRLF (as required by many protocols).
8635 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
8637 *) Install libRSAglue.a when OpenSSL is built with RSAref.
8638 [Ralf S. Engelschall]
8640 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
8641 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
8643 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
8647 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
8648 DH parameters/keys (q is lost during that conversion, but the resulting
8649 DH parameters contain its length).
8651 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
8652 much faster than DH_generate_parameters (which creates parameters
8653 where p = 2*q + 1), and also the smaller q makes DH computations
8654 much more efficient (160-bit exponentiation instead of 1024-bit
8655 exponentiation); so this provides a convenient way to support DHE
8656 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
8657 utter importance to use
8658 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
8660 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
8661 when such DH parameters are used, because otherwise small subgroup
8662 attacks may become possible!
8665 *) Avoid memory leak in i2d_DHparams.
8668 *) Allow the -k option to be used more than once in the enc program:
8669 this allows the same encrypted message to be read by multiple recipients.
8672 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
8673 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
8674 it will always use the numerical form of the OID, even if it has a short
8678 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
8679 method only got called if p,q,dmp1,dmq1,iqmp components were present,
8680 otherwise bn_mod_exp was called. In the case of hardware keys for example
8681 no private key components need be present and it might store extra data
8682 in the RSA structure, which cannot be accessed from bn_mod_exp.
8683 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
8684 private key operations.
8687 *) Added support for SPARC Linux.
8690 *) pem_password_cb function type incompatibly changed from
8691 typedef int pem_password_cb(char *buf, int size, int rwflag);
8693 ....(char *buf, int size, int rwflag, void *userdata);
8694 so that applications can pass data to their callbacks:
8695 The PEM[_ASN1]_{read,write}... functions and macros now take an
8696 additional void * argument, which is just handed through whenever
8697 the password callback is called.
8698 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
8700 New function SSL_CTX_set_default_passwd_cb_userdata.
8702 Compatibility note: As many C implementations push function arguments
8703 onto the stack in reverse order, the new library version is likely to
8704 interoperate with programs that have been compiled with the old
8705 pem_password_cb definition (PEM_whatever takes some data that
8706 happens to be on the stack as its last argument, and the callback
8707 just ignores this garbage); but there is no guarantee whatsoever that
8710 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
8711 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
8712 problems not only on Windows, but also on some Unix platforms.
8713 To avoid problematic command lines, these definitions are now in an
8714 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
8715 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
8718 *) MIPS III/IV assembler module is reimplemented.
8721 *) More DES library cleanups: remove references to srand/rand and
8722 delete an unused file.
8725 *) Add support for the the free Netwide assembler (NASM) under Win32,
8726 since not many people have MASM (ml) and it can be hard to obtain.
8727 This is currently experimental but it seems to work OK and pass all
8728 the tests. Check out INSTALL.W32 for info.
8731 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
8732 without temporary keys kept an extra copy of the server key,
8733 and connections with temporary keys did not free everything in case
8737 *) New function RSA_check_key and new openssl rsa option -check
8738 for verifying the consistency of RSA keys.
8739 [Ulf Moeller, Bodo Moeller]
8741 *) Various changes to make Win32 compile work:
8742 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
8743 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
8744 comparison" warnings.
8745 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
8748 *) Add a debugging option to PKCS#5 v2 key generation function: when
8749 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
8750 derived keys are printed to stderr.
8753 *) Copy the flags in ASN1_STRING_dup().
8754 [Roman E. Pavlov <pre@mo.msk.ru>]
8756 *) The x509 application mishandled signing requests containing DSA
8757 keys when the signing key was also DSA and the parameters didn't match.
8759 It was supposed to omit the parameters when they matched the signing key:
8760 the verifying software was then supposed to automatically use the CA's
8761 parameters if they were absent from the end user certificate.
8763 Omitting parameters is no longer recommended. The test was also
8764 the wrong way round! This was probably due to unusual behaviour in
8765 EVP_cmp_parameters() which returns 1 if the parameters match.
8766 This meant that parameters were omitted when they *didn't* match and
8767 the certificate was useless. Certificates signed with 'ca' didn't have
8769 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
8771 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
8772 The interface is as follows:
8773 Applications can use
8774 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
8775 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
8776 "off" is now the default.
8777 The library internally uses
8778 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
8779 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
8780 to disable memory-checking temporarily.
8782 Some inconsistent states that previously were possible (and were
8783 even the default) are now avoided.
8785 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
8786 with each memory chunk allocated; this is occasionally more helpful
8787 than just having a counter.
8789 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
8791 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
8795 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
8796 which largely parallels "options", but is for changing API behaviour,
8797 whereas "options" are about protocol behaviour.
8798 Initial "mode" flags are:
8800 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
8801 a single record has been written.
8802 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
8803 retries use the same buffer location.
8804 (But all of the contents must be
8808 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
8811 *) Fix problems with no-hmac etc.
8812 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
8814 *) New functions RSA_get_default_method(), RSA_set_method() and
8815 RSA_get_method(). These allows replacement of RSA_METHODs without having
8816 to mess around with the internals of an RSA structure.
8819 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
8820 Also really enable memory leak checks in openssl.c and in some
8822 [Chad C. Mulligan, Bodo Moeller]
8824 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
8825 up the length of negative integers. This has now been simplified to just
8826 store the length when it is first determined and use it later, rather
8827 than trying to keep track of where data is copied and updating it to
8829 [Steve Henson, reported by Brien Wheeler
8830 <bwheeler@authentica-security.com>]
8832 *) Add a new function PKCS7_signatureVerify. This allows the verification
8833 of a PKCS#7 signature but with the signing certificate passed to the
8834 function itself. This contrasts with PKCS7_dataVerify which assumes the
8835 certificate is present in the PKCS#7 structure. This isn't always the
8836 case: certificates can be omitted from a PKCS#7 structure and be
8837 distributed by "out of band" means (such as a certificate database).
8840 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
8841 function prototypes in pem.h, also change util/mkdef.pl to add the
8842 necessary function names.
8845 *) mk1mf.pl (used by Windows builds) did not properly read the
8846 options set by Configure in the top level Makefile, and Configure
8847 was not even able to write more than one option correctly.
8848 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
8851 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
8852 file to be loaded from a BIO or FILE pointer. The BIO version will
8853 for example allow memory BIOs to contain config info.
8856 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
8857 Whoever hopes to achieve shared-library compatibility across versions
8858 must use this, not the compile-time macro.
8859 (Exercise 0.9.4: Which is the minimum library version required by
8861 Note: All this applies only to multi-threaded programs, others don't
8865 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
8866 through a BIO pair triggered the default case, i.e.
8867 SSLerr(...,SSL_R_UNKNOWN_STATE).
8870 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
8871 can use the SSL library even if none of the specific BIOs is
8875 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
8876 for the encoded length.
8877 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
8879 *) Add initial documentation of the X509V3 functions.
8882 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
8883 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
8884 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
8885 secure PKCS#8 private key format with a high iteration count.
8888 *) Fix determination of Perl interpreter: A perl or perl5
8889 _directory_ in $PATH was also accepted as the interpreter.
8890 [Ralf S. Engelschall]
8892 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
8893 wrong with it but it was very old and did things like calling
8894 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
8898 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
8899 to use the new extension code.
8902 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
8903 with macros. This should make it easier to change their form, add extra
8904 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
8908 *) Add to configuration table a new entry that can specify an alternative
8909 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
8910 according to Mark Crispin <MRC@Panda.COM>.
8914 *) DES CBC did not update the IV. Weird.
8917 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
8918 Changing the behaviour of the former might break existing programs --
8919 where IV updating is needed, des_ncbc_encrypt can be used.
8922 *) When bntest is run from "make test" it drives bc to check its
8923 calculations, as well as internally checking them. If an internal check
8924 fails, it needs to cause bc to give a non-zero result or make test carries
8925 on without noticing the failure. Fixed.
8928 *) DES library cleanups.
8931 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
8932 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
8933 ciphers. NOTE: although the key derivation function has been verified
8934 against some published test vectors it has not been extensively tested
8935 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
8939 *) Instead of "mkdir -p", which is not fully portable, use new
8940 Perl script "util/mkdir-p.pl".
8943 *) Rewrite the way password based encryption (PBE) is handled. It used to
8944 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
8945 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
8946 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
8947 the 'parameter' field of the AlgorithmIdentifier is passed to the
8948 underlying key generation function so it must do its own ASN1 parsing.
8949 This has also changed the EVP_PBE_CipherInit() function which now has a
8950 'parameter' argument instead of literal salt and iteration count values
8951 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
8954 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
8955 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
8956 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
8957 KEY" because this clashed with PKCS#8 unencrypted string. Since this
8958 value was just used as a "magic string" and not used directly its
8959 value doesn't matter.
8962 *) Introduce some semblance of const correctness to BN. Shame C doesn't
8966 *) "linux-sparc64" configuration (ultrapenguin).
8967 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
8968 "linux-sparc" configuration.
8969 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
8971 *) config now generates no-xxx options for missing ciphers.
8974 *) Support the EBCDIC character set (work in progress).
8975 File ebcdic.c not yet included because it has a different license.
8976 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8978 *) Support BS2000/OSD-POSIX.
8979 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8981 *) Make callbacks for key generation use void * instead of char *.
8984 *) Make S/MIME samples compile (not yet tested).
8987 *) Additional typesafe stacks.
8990 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
8994 Changes between 0.9.3 and 0.9.3a [29 May 1999]
8996 *) New configuration variant "sco5-gcc".
8998 *) Updated some demos.
8999 [Sean O Riordain, Wade Scholine]
9001 *) Add missing BIO_free at exit of pkcs12 application.
9004 *) Fix memory leak in conf.c.
9007 *) Updates for Win32 to assembler version of MD5.
9010 *) Set #! path to perl in apps/der_chop to where we found it
9011 instead of using a fixed path.
9014 *) SHA library changes for irix64-mips4-cc.
9017 *) Improvements for VMS support.
9021 Changes between 0.9.2b and 0.9.3 [24 May 1999]
9023 *) Bignum library bug fix. IRIX 6 passes "make test" now!
9024 This also avoids the problems with SC4.2 and unpatched SC5.
9025 [Andy Polyakov <appro@fy.chalmers.se>]
9027 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
9028 These are required because of the typesafe stack would otherwise break
9029 existing code. If old code used a structure member which used to be STACK
9030 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
9031 sk_num or sk_value it would produce an error because the num, data members
9032 are not present in STACK_OF. Now it just produces a warning. sk_set
9033 replaces the old method of assigning a value to sk_value
9034 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
9035 that does this will no longer work (and should use sk_set instead) but
9036 this could be regarded as a "questionable" behaviour anyway.
9039 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
9040 correctly handle encrypted S/MIME data.
9043 *) Change type of various DES function arguments from des_cblock
9044 (which means, in function argument declarations, pointer to char)
9045 to des_cblock * (meaning pointer to array with 8 char elements),
9046 which allows the compiler to do more typechecking; it was like
9047 that back in SSLeay, but with lots of ugly casts.
9049 Introduce new type const_des_cblock.
9052 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
9053 problems: find RecipientInfo structure that matches recipient certificate
9054 and initialise the ASN1 structures properly based on passed cipher.
9057 *) Belatedly make the BN tests actually check the results.
9060 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
9061 to and from BNs: it was completely broken. New compilation option
9062 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
9063 key elements as negative integers.
9066 *) Reorganize and speed up MD5.
9067 [Andy Polyakov <appro@fy.chalmers.se>]
9070 [Richard Levitte <richard@levitte.org>]
9072 *) New option -out to asn1parse to allow the parsed structure to be
9073 output to a file. This is most useful when combined with the -strparse
9074 option to examine the output of things like OCTET STRINGS.
9077 *) Make SSL library a little more fool-proof by not requiring any longer
9078 that SSL_set_{accept,connect}_state be called before
9079 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
9080 in many applications because usually everything *appeared* to work as
9081 intended anyway -- now it really works as intended).
9084 *) Move openssl.cnf out of lib/.
9087 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
9088 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
9089 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
9090 [Ralf S. Engelschall]
9092 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
9093 handle PKCS#7 enveloped data properly.
9094 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
9096 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
9097 copying pointers. The cert_st handling is changed by this in
9098 various ways (and thus what used to be known as ctx->default_cert
9099 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
9100 any longer when s->cert does not give us what we need).
9101 ssl_cert_instantiate becomes obsolete by this change.
9102 As soon as we've got the new code right (possibly it already is?),
9103 we have solved a couple of bugs of the earlier code where s->cert
9104 was used as if it could not have been shared with other SSL structures.
9106 Note that using the SSL API in certain dirty ways now will result
9107 in different behaviour than observed with earlier library versions:
9108 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
9109 does not influence s as it used to.
9111 In order to clean up things more thoroughly, inside SSL_SESSION
9112 we don't use CERT any longer, but a new structure SESS_CERT
9113 that holds per-session data (if available); currently, this is
9114 the peer's certificate chain and, for clients, the server's certificate
9115 and temporary key. CERT holds only those values that can have
9116 meaningful defaults in an SSL_CTX.
9119 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
9120 from the internal representation. Various PKCS#7 fixes: remove some
9121 evil casts and set the enc_dig_alg field properly based on the signing
9125 *) Allow PKCS#12 password to be set from the command line or the
9126 environment. Let 'ca' get its config file name from the environment
9127 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
9131 *) Allow certificate policies extension to use an IA5STRING for the
9132 organization field. This is contrary to the PKIX definition but
9133 VeriSign uses it and IE5 only recognises this form. Document 'x509'
9137 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
9138 without disallowing inline assembler and the like for non-pedantic builds.
9141 *) Support Borland C++ builder.
9142 [Janez Jere <jj@void.si>, modified by Ulf Möller]
9147 *) SHA-1 cleanups and performance enhancements.
9148 [Andy Polyakov <appro@fy.chalmers.se>]
9150 *) Sparc v8plus assembler for the bignum library.
9151 [Andy Polyakov <appro@fy.chalmers.se>]
9153 *) Accept any -xxx and +xxx compiler options in Configure.
9156 *) Update HPUX configuration.
9159 *) Add missing sk_<type>_unshift() function to safestack.h
9160 [Ralf S. Engelschall]
9162 *) New function SSL_CTX_use_certificate_chain_file that sets the
9163 "extra_cert"s in addition to the certificate. (This makes sense
9164 only for "PEM" format files, as chains as a whole are not
9168 *) Support verify_depth from the SSL API.
9169 x509_vfy.c had what can be considered an off-by-one-error:
9170 Its depth (which was not part of the external interface)
9171 was actually counting the number of certificates in a chain;
9172 now it really counts the depth.
9175 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
9176 instead of X509err, which often resulted in confusing error
9177 messages since the error codes are not globally unique
9178 (e.g. an alleged error in ssl3_accept when a certificate
9179 didn't match the private key).
9181 *) New function SSL_CTX_set_session_id_context that allows to set a default
9182 value (so that you don't need SSL_set_session_id_context for each
9183 connection using the SSL_CTX).
9186 *) OAEP decoding bug fix.
9189 *) Support INSTALL_PREFIX for package builders, as proposed by
9193 *) New Configure options "threads" and "no-threads". For systems
9194 where the proper compiler options are known (currently Solaris
9195 and Linux), "threads" is the default.
9198 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
9201 *) Install various scripts to $(OPENSSLDIR)/misc, not to
9202 $(INSTALLTOP)/bin -- they shouldn't clutter directories
9203 such as /usr/local/bin.
9206 *) "make linux-shared" to build shared libraries.
9207 [Niels Poppe <niels@netbox.org>]
9209 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
9212 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
9213 extension adding in x509 utility.
9216 *) Remove NOPROTO sections and error code comments.
9219 *) Partial rewrite of the DEF file generator to now parse the ANSI
9223 *) New Configure options --prefix=DIR and --openssldir=DIR.
9226 *) Complete rewrite of the error code script(s). It is all now handled
9227 by one script at the top level which handles error code gathering,
9228 header rewriting and C source file generation. It should be much better
9229 than the old method: it now uses a modified version of Ulf's parser to
9230 read the ANSI prototypes in all header files (thus the old K&R definitions
9231 aren't needed for error creation any more) and do a better job of
9232 translating function codes into names. The old 'ASN1 error code imbedded
9233 in a comment' is no longer necessary and it doesn't use .err files which
9234 have now been deleted. Also the error code call doesn't have to appear all
9235 on one line (which resulted in some large lines...).
9238 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
9241 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
9242 0 (which usually indicates a closed connection), but continue reading.
9245 *) Fix some race conditions.
9248 *) Add support for CRL distribution points extension. Add Certificate
9249 Policies and CRL distribution points documentation.
9252 *) Move the autogenerated header file parts to crypto/opensslconf.h.
9255 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
9256 8 of keying material. Merlin has also confirmed interop with this fix
9257 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
9258 [Merlin Hughes <merlin@baltimore.ie>]
9260 *) Fix lots of warnings.
9261 [Richard Levitte <levitte@stacken.kth.se>]
9263 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
9264 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
9265 [Richard Levitte <levitte@stacken.kth.se>]
9267 *) Fix problems with sizeof(long) == 8.
9268 [Andy Polyakov <appro@fy.chalmers.se>]
9270 *) Change functions to ANSI C.
9273 *) Fix typos in error codes.
9274 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
9276 *) Remove defunct assembler files from Configure.
9279 *) SPARC v8 assembler BIGNUM implementation.
9280 [Andy Polyakov <appro@fy.chalmers.se>]
9282 *) Support for Certificate Policies extension: both print and set.
9283 Various additions to support the r2i method this uses.
9286 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
9287 return a const string when you are expecting an allocated buffer.
9290 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
9291 types DirectoryString and DisplayText.
9294 *) Add code to allow r2i extensions to access the configuration database,
9295 add an LHASH database driver and add several ctx helper functions.
9298 *) Fix an evil bug in bn_expand2() which caused various BN functions to
9299 fail when they extended the size of a BIGNUM.
9302 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
9303 support typesafe stack.
9306 *) Fix typo in SSL_[gs]et_options().
9307 [Nils Frostberg <nils@medcom.se>]
9309 *) Delete various functions and files that belonged to the (now obsolete)
9310 old X509V3 handling code.
9313 *) New Configure option "rsaref".
9316 *) Don't auto-generate pem.h.
9319 *) Introduce type-safe ASN.1 SETs.
9322 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
9323 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
9325 *) Introduce type-safe STACKs. This will almost certainly break lots of code
9326 that links with OpenSSL (well at least cause lots of warnings), but fear
9327 not: the conversion is trivial, and it eliminates loads of evil casts. A
9328 few STACKed things have been converted already. Feel free to convert more.
9329 In the fullness of time, I'll do away with the STACK type altogether.
9332 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
9333 specified in <certfile> by updating the entry in the index.txt file.
9334 This way one no longer has to edit the index.txt file manually for
9335 revoking a certificate. The -revoke option does the gory details now.
9336 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
9338 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
9339 `-text' option at all and this way the `-noout -text' combination was
9340 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
9341 [Ralf S. Engelschall]
9343 *) Make sure a corresponding plain text error message exists for the
9344 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
9345 verify callback function determined that a certificate was revoked.
9346 [Ralf S. Engelschall]
9348 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
9349 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
9350 all available cipers including rc5, which was forgotten until now.
9351 In order to let the testing shell script know which algorithms
9352 are available, a new (up to now undocumented) command
9353 "openssl list-cipher-commands" is used.
9356 *) Bugfix: s_client occasionally would sleep in select() when
9357 it should have checked SSL_pending() first.
9360 *) New functions DSA_do_sign and DSA_do_verify to provide access to
9361 the raw DSA values prior to ASN.1 encoding.
9364 *) Tweaks to Configure
9365 [Niels Poppe <niels@netbox.org>]
9367 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
9371 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
9374 *) New config option to avoid instructions that are illegal on the 80386.
9375 The default code is faster, but requires at least a 486.
9378 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
9379 SSL2_SERVER_VERSION (not used at all) macros, which are now the
9380 same as SSL2_VERSION anyway.
9383 *) New "-showcerts" option for s_client.
9386 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
9387 application. Various cleanups and fixes.
9390 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
9391 modify error routines to work internally. Add error codes and PBE init
9392 to library startup routines.
9395 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
9396 packing functions to asn1 and evp. Changed function names and error
9397 codes along the way.
9400 *) PKCS12 integration: and so it begins... First of several patches to
9401 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
9402 objects to objects.h
9405 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
9406 and display support for Thawte strong extranet extension.
9409 *) Add LinuxPPC support.
9410 [Jeff Dubrule <igor@pobox.org>]
9412 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
9413 bn_div_words in alpha.s.
9414 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
9416 *) Make sure the RSA OAEP test is skipped under -DRSAref because
9417 OAEP isn't supported when OpenSSL is built with RSAref.
9418 [Ulf Moeller <ulf@fitug.de>]
9420 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
9421 so they no longer are missing under -DNOPROTO.
9422 [Soren S. Jorvang <soren@t.dk>]
9425 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
9427 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
9428 doesn't work when the session is reused. Coming soon!
9431 *) Fix a security hole, that allows sessions to be reused in the wrong
9432 context thus bypassing client cert protection! All software that uses
9433 client certs and session caches in multiple contexts NEEDS PATCHING to
9434 allow session reuse! A fuller solution is in the works.
9435 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
9437 *) Some more source tree cleanups (removed obsolete files
9438 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
9439 permission on "config" script to be executable) and a fix for the INSTALL
9441 [Ulf Moeller <ulf@fitug.de>]
9443 *) Remove some legacy and erroneous uses of malloc, free instead of
9445 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
9447 *) Make rsa_oaep_test return non-zero on error.
9448 [Ulf Moeller <ulf@fitug.de>]
9450 *) Add support for native Solaris shared libraries. Configure
9451 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
9452 if someone would make that last step automatic.
9453 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
9455 *) ctx_size was not built with the right compiler during "make links". Fixed.
9458 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
9459 except NULL ciphers". This means the default cipher list will no longer
9460 enable NULL ciphers. They need to be specifically enabled e.g. with
9461 the string "DEFAULT:eNULL".
9464 *) Fix to RSA private encryption routines: if p < q then it would
9465 occasionally produce an invalid result. This will only happen with
9466 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
9469 *) Be less restrictive and allow also `perl util/perlpath.pl
9470 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
9471 because this way one can also use an interpreter named `perl5' (which is
9472 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
9473 installed as `perl').
9474 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9476 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
9477 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9479 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
9480 advapi32.lib to Win32 build and change the pem test comparision
9481 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
9482 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
9483 and crypto/des/ede_cbcm_enc.c.
9486 *) DES quad checksum was broken on big-endian architectures. Fixed.
9489 *) Comment out two functions in bio.h that aren't implemented. Fix up the
9490 Win32 test batch file so it (might) work again. The Win32 test batch file
9491 is horrible: I feel ill....
9494 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
9495 in e_os.h. Audit of header files to check ANSI and non ANSI
9496 sections: 10 functions were absent from non ANSI section and not exported
9497 from Windows DLLs. Fixed up libeay.num for new functions.
9500 *) Make `openssl version' output lines consistent.
9501 [Ralf S. Engelschall]
9503 *) Fix Win32 symbol export lists for BIO functions: Added
9504 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
9505 to ms/libeay{16,32}.def.
9506 [Ralf S. Engelschall]
9508 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
9509 fine under Unix and passes some trivial tests I've now added. But the
9510 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
9511 added to make sure no one expects that this stuff really works in the
9512 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
9513 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
9515 [Ralf S. Engelschall]
9517 *) Fix the generation of two part addresses in perl.
9518 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
9520 *) Add config entry for Linux on MIPS.
9521 [John Tobey <jtobey@channel1.com>]
9523 *) Make links whenever Configure is run, unless we are on Windoze.
9526 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
9527 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
9531 *) Add a useful kludge to allow package maintainers to specify compiler and
9532 other platforms details on the command line without having to patch the
9533 Configure script everytime: One now can use ``perl Configure
9534 <id>:<details>'', i.e. platform ids are allowed to have details appended
9535 to them (seperated by colons). This is treated as there would be a static
9536 pre-configured entry in Configure's %table under key <id> with value
9537 <details> and ``perl Configure <id>'' is called. So, when you want to
9538 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
9539 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
9540 now, which overrides the FreeBSD-elf entry on-the-fly.
9541 [Ralf S. Engelschall]
9543 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
9546 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
9547 on the `perl Configure ...' command line. This way one can compile
9548 OpenSSL libraries with Position Independent Code (PIC) which is needed
9549 for linking it into DSOs.
9550 [Ralf S. Engelschall]
9552 *) Remarkably, export ciphers were totally broken and no-one had noticed!
9556 *) Cleaned up the LICENSE document: The official contact for any license
9557 questions now is the OpenSSL core team under openssl-core@openssl.org.
9558 And add a paragraph about the dual-license situation to make sure people
9559 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
9560 to the OpenSSL toolkit.
9561 [Ralf S. Engelschall]
9563 *) General source tree makefile cleanups: Made `making xxx in yyy...'
9564 display consistent in the source tree and replaced `/bin/rm' by `rm'.
9565 Additonally cleaned up the `make links' target: Remove unnecessary
9566 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
9567 to speed processing and no longer clutter the display with confusing
9568 stuff. Instead only the actually done links are displayed.
9569 [Ralf S. Engelschall]
9571 *) Permit null encryption ciphersuites, used for authentication only. It used
9572 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
9573 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
9577 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
9578 signed attributes when verifying signatures (this would break them),
9579 the detached data encoding was wrong and public keys obtained using
9580 X509_get_pubkey() weren't freed.
9583 *) Add text documentation for the BUFFER functions. Also added a work around
9584 to a Win95 console bug. This was triggered by the password read stuff: the
9585 last character typed gets carried over to the next fread(). If you were
9586 generating a new cert request using 'req' for example then the last
9587 character of the passphrase would be CR which would then enter the first
9591 *) Added the new `Includes OpenSSL Cryptography Software' button as
9592 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
9593 button and can be used by applications based on OpenSSL to show the
9594 relationship to the OpenSSL project.
9595 [Ralf S. Engelschall]
9597 *) Remove confusing variables in function signatures in files
9598 ssl/ssl_lib.c and ssl/ssl.h.
9599 [Lennart Bong <lob@kulthea.stacken.kth.se>]
9601 *) Don't install bss_file.c under PREFIX/include/
9602 [Lennart Bong <lob@kulthea.stacken.kth.se>]
9604 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
9605 functions that return function pointers and has support for NT specific
9606 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
9607 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
9608 unsigned to signed types: this was killing the Win32 compile.
9611 *) Add new certificate file to stack functions,
9612 SSL_add_dir_cert_subjects_to_stack() and
9613 SSL_add_file_cert_subjects_to_stack(). These largely supplant
9614 SSL_load_client_CA_file(), and can be used to add multiple certs easily
9615 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
9616 This means that Apache-SSL and similar packages don't have to mess around
9617 to add as many CAs as they want to the preferred list.
9620 *) Experiment with doxygen documentation. Currently only partially applied to
9622 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
9623 openssl.doxy as the configuration file.
9626 *) Get rid of remaining C++-style comments which strict C compilers hate.
9627 [Ralf S. Engelschall, pointed out by Carlos Amengual]
9629 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
9630 compiled in by default: it has problems with large keys.
9633 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
9634 DH private keys and/or callback functions which directly correspond to
9635 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
9636 is needed for applications which have to configure certificates on a
9637 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
9639 For the RSA certificate situation is makes no difference, but
9640 for the DSA certificate situation this fixes the "no shared cipher"
9641 problem where the OpenSSL cipher selection procedure failed because the
9642 temporary keys were not overtaken from the context and the API provided
9643 no way to reconfigure them.
9644 The new functions now let applications reconfigure the stuff and they
9645 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
9646 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
9647 non-public-API function ssl_cert_instantiate() is used as a helper
9648 function and also to reduce code redundancy inside ssl_rsa.c.
9649 [Ralf S. Engelschall]
9651 *) Move s_server -dcert and -dkey options out of the undocumented feature
9652 area because they are useful for the DSA situation and should be
9653 recognized by the users.
9654 [Ralf S. Engelschall]
9656 *) Fix the cipher decision scheme for export ciphers: the export bits are
9657 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
9658 SSL_EXP_MASK. So, the original variable has to be used instead of the
9659 already masked variable.
9660 [Richard Levitte <levitte@stacken.kth.se>]
9662 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
9663 [Richard Levitte <levitte@stacken.kth.se>]
9665 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
9666 from `int' to `unsigned int' because it's a length and initialized by
9667 EVP_DigestFinal() which expects an `unsigned int *'.
9668 [Richard Levitte <levitte@stacken.kth.se>]
9670 *) Don't hard-code path to Perl interpreter on shebang line of Configure
9671 script. Instead use the usual Shell->Perl transition trick.
9672 [Ralf S. Engelschall]
9674 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
9675 (in addition to RSA certificates) to match the behaviour of `openssl dsa
9676 -noout -modulus' as it's already the case for `openssl rsa -noout
9677 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
9678 currently the public key is printed (a decision which was already done by
9679 `openssl dsa -modulus' in the past) which serves a similar purpose.
9680 Additionally the NO_RSA no longer completely removes the whole -modulus
9681 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
9683 [Ralf S. Engelschall]
9685 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
9686 BIO. See the source (crypto/evp/bio_ok.c) for more info.
9687 [Arne Ansper <arne@ats.cyber.ee>]
9689 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
9690 to be added. Now both 'req' and 'ca' can use new objects defined in the
9694 *) Add cool BIO that does syslog (or event log on NT).
9695 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
9697 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
9698 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
9699 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
9700 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
9703 *) Add preliminary config info for new extension code.
9706 *) Make RSA_NO_PADDING really use no padding.
9707 [Ulf Moeller <ulf@fitug.de>]
9709 *) Generate errors when private/public key check is done.
9712 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
9713 for some CRL extensions and new objects added.
9716 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
9717 key usage extension and fuller support for authority key id.
9720 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
9721 padding method for RSA, which is recommended for new applications in PKCS
9722 #1 v2.0 (RFC 2437, October 1998).
9723 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
9724 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
9725 against Bleichbacher's attack on RSA.
9726 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
9729 *) Updates to the new SSL compression code
9730 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9732 *) Fix so that the version number in the master secret, when passed
9733 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
9734 (because the server will not accept higher), that the version number
9735 is 0x03,0x01, not 0x03,0x00
9736 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9738 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
9739 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
9740 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
9743 *) Support for RAW extensions where an arbitrary extension can be
9744 created by including its DER encoding. See apps/openssl.cnf for
9748 *) Make sure latest Perl versions don't interpret some generated C array
9749 code as Perl array code in the crypto/err/err_genc.pl script.
9750 [Lars Weber <3weber@informatik.uni-hamburg.de>]
9752 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
9753 not many people have the assembler. Various Win32 compilation fixes and
9754 update to the INSTALL.W32 file with (hopefully) more accurate Win32
9758 *) Modify configure script 'Configure' to automatically create crypto/date.h
9759 file under Win32 and also build pem.h from pem.org. New script
9760 util/mkfiles.pl to create the MINFO file on environments that can't do a
9761 'make files': perl util/mkfiles.pl >MINFO should work.
9764 *) Major rework of DES function declarations, in the pursuit of correctness
9765 and purity. As a result, many evil casts evaporated, and some weirdness,
9766 too. You may find this causes warnings in your code. Zapping your evil
9767 casts will probably fix them. Mostly.
9770 *) Fix for a typo in asn1.h. Bug fix to object creation script
9771 obj_dat.pl. It considered a zero in an object definition to mean
9772 "end of object": none of the objects in objects.h have any zeros
9773 so it wasn't spotted.
9774 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
9776 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
9777 Masking (CBCM). In the absence of test vectors, the best I have been able
9778 to do is check that the decrypt undoes the encrypt, so far. Send me test
9779 vectors if you have them.
9782 *) Correct calculation of key length for export ciphers (too much space was
9783 allocated for null ciphers). This has not been tested!
9786 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
9787 message is now correct (it understands "crypto" and "ssl" on its
9788 command line). There is also now an "update" option. This will update
9789 the util/ssleay.num and util/libeay.num files with any new functions.
9791 perl util/mkdef.pl crypto ssl update
9792 it will update them.
9795 *) Overhauled the Perl interface (perl/*):
9796 - ported BN stuff to OpenSSL's different BN library
9797 - made the perl/ source tree CVS-aware
9798 - renamed the package from SSLeay to OpenSSL (the files still contain
9799 their history because I've copied them in the repository)
9800 - removed obsolete files (the test scripts will be replaced
9801 by better Test::Harness variants in the future)
9802 [Ralf S. Engelschall]
9804 *) First cut for a very conservative source tree cleanup:
9805 1. merge various obsolete readme texts into doc/ssleay.txt
9806 where we collect the old documents and readme texts.
9807 2. remove the first part of files where I'm already sure that we no
9808 longer need them because of three reasons: either they are just temporary
9809 files which were left by Eric or they are preserved original files where
9810 I've verified that the diff is also available in the CVS via "cvs diff
9811 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
9812 the crypto/md/ stuff).
9813 [Ralf S. Engelschall]
9815 *) More extension code. Incomplete support for subject and issuer alt
9816 name, issuer and authority key id. Change the i2v function parameters
9817 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
9818 what that's for :-) Fix to ASN1 macro which messed up
9819 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
9822 *) Preliminary support for ENUMERATED type. This is largely copied from the
9826 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
9827 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9829 *) Make sure `make rehash' target really finds the `openssl' program.
9830 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9832 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
9833 like to hear about it if this slows down other processors.
9836 *) Add CygWin32 platform information to Configure script.
9837 [Alan Batie <batie@aahz.jf.intel.com>]
9839 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
9840 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
9842 *) New program nseq to manipulate netscape certificate sequences
9845 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
9849 *) Fixes to BN code. Previously the default was to define BN_RECURSION
9850 but the BN code had some problems that would cause failures when
9851 doing certificate verification and some other functions.
9852 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9854 *) Add ASN1 and PEM code to support netscape certificate sequences.
9857 *) Add ASN1 and PEM code to support netscape certificate sequences.
9860 *) Add several PKIX and private extended key usage OIDs.
9863 *) Modify the 'ca' program to handle the new extension code. Modify
9864 openssl.cnf for new extension format, add comments.
9867 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
9868 and add a sample to openssl.cnf so req -x509 now adds appropriate
9872 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
9873 error code, add initial support to X509_print() and x509 application.
9876 *) Takes a deep breath and start addding X509 V3 extension support code. Add
9877 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
9878 stuff is currently isolated and isn't even compiled yet.
9881 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
9882 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
9883 Removed the versions check from X509 routines when loading extensions:
9884 this allows certain broken certificates that don't set the version
9885 properly to be processed.
9888 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
9889 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
9890 can still be regenerated with "make depend".
9893 *) Spelling mistake in C version of CAST-128.
9894 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
9896 *) Changes to the error generation code. The perl script err-code.pl
9897 now reads in the old error codes and retains the old numbers, only
9898 adding new ones if necessary. It also only changes the .err files if new
9899 codes are added. The makefiles have been modified to only insert errors
9900 when needed (to avoid needlessly modifying header files). This is done
9901 by only inserting errors if the .err file is newer than the auto generated
9902 C file. To rebuild all the error codes from scratch (the old behaviour)
9903 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
9904 or delete all the .err files.
9907 *) CAST-128 was incorrectly implemented for short keys. The C version has
9908 been fixed, but is untested. The assembler versions are also fixed, but
9909 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
9910 to regenerate it if needed.
9911 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
9912 Hagino <itojun@kame.net>]
9914 *) File was opened incorrectly in randfile.c.
9915 [Ulf Möller <ulf@fitug.de>]
9917 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
9918 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
9919 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
9920 al: it's just almost always a UTCTime. Note this patch adds new error
9921 codes so do a "make errors" if there are problems.
9924 *) Correct Linux 1 recognition in config.
9925 [Ulf Möller <ulf@fitug.de>]
9927 *) Remove pointless MD5 hash when using DSA keys in ca.
9928 [Anonymous <nobody@replay.com>]
9930 *) Generate an error if given an empty string as a cert directory. Also
9931 generate an error if handed NULL (previously returned 0 to indicate an
9932 error, but didn't set one).
9933 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
9935 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
9938 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
9939 parameters. This was causing a warning which killed off the Win32 compile.
9942 *) Remove C++ style comments from crypto/bn/bn_local.h.
9943 [Neil Costigan <neil.costigan@celocom.com>]
9945 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
9946 based on a text string, looking up short and long names and finally
9947 "dot" format. The "dot" format stuff didn't work. Added new function
9948 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
9949 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
9950 OID is not part of the table.
9953 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
9954 X509_LOOKUP_by_alias().
9957 *) Sort openssl functions by name.
9960 *) Get the gendsa program working (hopefully) and add it to app list. Remove
9961 encryption from sample DSA keys (in case anyone is interested the password
9965 *) Make _all_ *_free functions accept a NULL pointer.
9966 [Frans Heymans <fheymans@isaserver.be>]
9968 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
9970 [Anonymous <nobody@replay.com>]
9972 *) s_server should send the CAfile as acceptable CAs, not its own cert.
9973 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
9975 *) Don't blow it for numeric -newkey arguments to apps/req.
9976 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
9978 *) Temp key "for export" tests were wrong in s3_srvr.c.
9979 [Anonymous <nobody@replay.com>]
9981 *) Add prototype for temp key callback functions
9982 SSL_CTX_set_tmp_{rsa,dh}_callback().
9985 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
9986 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
9989 *) X509_name_add_entry() freed the wrong thing after an error.
9990 [Arne Ansper <arne@ats.cyber.ee>]
9992 *) rsa_eay.c would attempt to free a NULL context.
9993 [Arne Ansper <arne@ats.cyber.ee>]
9995 *) BIO_s_socket() had a broken should_retry() on Windoze.
9996 [Arne Ansper <arne@ats.cyber.ee>]
9998 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
9999 [Arne Ansper <arne@ats.cyber.ee>]
10001 *) Make sure the already existing X509_STORE->depth variable is initialized
10002 in X509_STORE_new(), but document the fact that this variable is still
10003 unused in the certificate verification process.
10004 [Ralf S. Engelschall]
10006 *) Fix the various library and apps files to free up pkeys obtained from
10007 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
10010 *) Fix reference counting in X509_PUBKEY_get(). This makes
10011 demos/maurice/example2.c work, amongst others, probably.
10012 [Steve Henson and Ben Laurie]
10014 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
10015 `openssl' and second, the shortcut symlinks for the `openssl <command>'
10016 are no longer created. This way we have a single and consistent command
10017 line interface `openssl <command>', similar to `cvs <command>'.
10018 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
10020 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
10021 BIT STRING wrapper always have zero unused bits.
10024 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
10027 *) Make the top-level INSTALL documentation easier to understand.
10030 *) Makefiles updated to exit if an error occurs in a sub-directory
10031 make (including if user presses ^C) [Paul Sutton]
10033 *) Make Montgomery context stuff explicit in RSA data structure.
10036 *) Fix build order of pem and err to allow for generated pem.h.
10039 *) Fix renumbering bug in X509_NAME_delete_entry().
10042 *) Enhanced the err-ins.pl script so it makes the error library number
10043 global and can add a library name. This is needed for external ASN1 and
10044 other error libraries.
10047 *) Fixed sk_insert which never worked properly.
10050 *) Fix ASN1 macros so they can handle indefinite length construted
10051 EXPLICIT tags. Some non standard certificates use these: they can now
10055 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
10056 into a single doc/ssleay.txt bundle. This way the information is still
10057 preserved but no longer messes up this directory. Now it's new room for
10058 the new set of documenation files.
10059 [Ralf S. Engelschall]
10061 *) SETs were incorrectly DER encoded. This was a major pain, because they
10062 shared code with SEQUENCEs, which aren't coded the same. This means that
10063 almost everything to do with SETs or SEQUENCEs has either changed name or
10064 number of arguments.
10065 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
10067 *) Fix test data to work with the above.
10070 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
10071 was already fixed by Eric for 0.9.1 it seems.
10072 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
10074 *) Autodetect FreeBSD3.
10077 *) Fix various bugs in Configure. This affects the following platforms:
10081 unixware-2.0-pentium
10085 *) Eliminate generated files from CVS. Reorder tests to regenerate files
10086 before they are needed.
10089 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
10093 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
10095 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
10096 changed SSLeay to OpenSSL in version strings.
10097 [Ralf S. Engelschall]
10099 *) Some fixups to the top-level documents.
10102 *) Fixed the nasty bug where rsaref.h was not found under compile-time
10103 because the symlink to include/ was missing.
10104 [Ralf S. Engelschall]
10106 *) Incorporated the popular no-RSA/DSA-only patches
10107 which allow to compile a RSA-free SSLeay.
10108 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
10110 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
10111 when "ssleay" is still not found.
10112 [Ralf S. Engelschall]
10114 *) Added more platforms to Configure: Cray T3E, HPUX 11,
10115 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
10117 *) Updated the README file.
10118 [Ralf S. Engelschall]
10120 *) Added various .cvsignore files in the CVS repository subdirs
10121 to make a "cvs update" really silent.
10122 [Ralf S. Engelschall]
10124 *) Recompiled the error-definition header files and added
10125 missing symbols to the Win32 linker tables.
10126 [Ralf S. Engelschall]
10128 *) Cleaned up the top-level documents;
10129 o new files: CHANGES and LICENSE
10130 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
10131 o merged COPYRIGHT into LICENSE
10132 o removed obsolete TODO file
10133 o renamed MICROSOFT to INSTALL.W32
10134 [Ralf S. Engelschall]
10136 *) Removed dummy files from the 0.9.1b source tree:
10137 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
10138 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
10139 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
10140 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
10141 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
10142 [Ralf S. Engelschall]
10144 *) Added various platform portability fixes.
10147 *) The Genesis of the OpenSSL rpject:
10148 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
10149 Young and Tim J. Hudson created while they were working for C2Net until
10151 [The OpenSSL Project]
10154 Changes between 0.9.0b and 0.9.1b [not released]
10156 *) Updated a few CA certificates under certs/
10159 *) Changed some BIGNUM api stuff.
10162 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
10163 DGUX x86, Linux Alpha, etc.
10166 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
10167 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
10171 *) Add -strparse option to asn1pars program which parses nested
10173 [Dr Stephen Henson <shenson@bigfoot.com>]
10175 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
10178 *) DSA fix for "ca" program.
10181 *) Added "-genkey" option to "dsaparam" program.
10184 *) Added RIPE MD160 (rmd160) message digest.
10187 *) Added -a (all) option to "ssleay version" command.
10190 *) Added PLATFORM define which is the id given to Configure.
10193 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
10196 *) Extended the ASN.1 parser routines.
10199 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
10202 *) Added a BN_CTX to the BN library.
10205 *) Fixed the weak key values in DES library
10208 *) Changed API in EVP library for cipher aliases.
10211 *) Added support for RC2/64bit cipher.
10214 *) Converted the lhash library to the crypto/mem.c functions.
10217 *) Added more recognized ASN.1 object ids.
10220 *) Added more RSA padding checks for SSL/TLS.
10223 *) Added BIO proxy/filter functionality.
10226 *) Added extra_certs to SSL_CTX which can be used
10227 send extra CA certificates to the client in the CA cert chain sending
10228 process. It can be configured with SSL_CTX_add_extra_chain_cert().
10231 *) Now Fortezza is denied in the authentication phase because
10232 this is key exchange mechanism is not supported by SSLeay at all.
10235 *) Additional PKCS1 checks.
10238 *) Support the string "TLSv1" for all TLS v1 ciphers.
10241 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
10242 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
10245 *) Fixed a few memory leaks.
10248 *) Fixed various code and comment typos.
10251 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
10252 bytes sent in the client random.
10253 [Edward Bishop <ebishop@spyglass.com>]
projects / openssl.git / blob