5 Changes between 1.0.2 and 1.1.0 [xx XXX xxxx]
7 *) Fix for the attack described in the paper "Recovering OpenSSL
8 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
9 by Yuval Yarom and Naomi Benger. Details can be obtained from:
10 http://eprint.iacr.org/2014/140
12 Thanks to Yuval Yarom and Naomi Benger for discovering this
13 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
14 [Yuval Yarom and Naomi Benger]
16 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
17 this fixes a limiation in previous versions of OpenSSL.
20 *) Experimental encrypt-then-mac support.
22 Experimental support for encrypt then mac from
23 draft-gutmann-tls-encrypt-then-mac-02.txt
25 To enable it set the appropriate extension number (0x42 for the test
26 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
28 For non-compliant peers (i.e. just about everything) this should have no
31 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
35 *) Add callbacks supporting generation and retrieval of supplemental
37 [Scott Deboy <sdeboy@apache.org>, Trevor Perrin and Ben Laurie]
39 *) Add EVP support for key wrapping algorithms, to avoid problems with
40 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
41 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
42 algorithms and include tests cases.
45 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
49 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
50 MGF1 digest and OAEP label.
53 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
54 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
55 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
58 *) Make openssl verify return errors.
59 [Chris Palmer <palmer@google.com> and Ben Laurie]
61 *) New function ASN1_TIME_diff to calculate the difference between two
62 ASN1_TIME structures or one structure and the current time.
65 *) Update fips_test_suite to support multiple command line options. New
66 test to induce all self test errors in sequence and check expected
70 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
71 sign or verify all in one operation.
74 *) Add fips_algvs: a multicall fips utility incorporaing all the algorithm
75 test programs and fips_test_suite. Includes functionality to parse
76 the minimal script output of fipsalgest.pl directly.
79 *) Add authorisation parameter to FIPS_module_mode_set().
82 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
85 *) Use separate DRBG fields for internal and external flags. New function
86 FIPS_drbg_health_check() to perform on demand health checking. Add
87 generation tests to fips_test_suite with reduced health check interval to
88 demonstrate periodic health checking. Add "nodh" option to
89 fips_test_suite to skip very slow DH test.
92 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
96 *) More extensive health check for DRBG checking many more failure modes.
97 New function FIPS_selftest_drbg_all() to handle every possible DRBG
98 combination: call this in fips_test_suite.
101 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
102 and POST to handle Dual EC cases.
105 *) Add support for canonical generation of DSA parameter 'g'. See
108 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
109 POST to handle HMAC cases.
112 *) Add functions FIPS_module_version() and FIPS_module_version_text()
113 to return numerical and string versions of the FIPS module number.
116 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
117 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
118 outside the validated module in the FIPS capable OpenSSL.
121 *) Minor change to DRBG entropy callback semantics. In some cases
122 there is no multiple of the block length between min_len and
123 max_len. Allow the callback to return more than max_len bytes
124 of entropy but discard any extra: it is the callback's responsibility
125 to ensure that the extra data discarded does not impact the
126 requested amount of entropy.
129 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
130 information in FIPS186-3, SP800-57 and SP800-131A.
133 *) CCM support via EVP. Interface is very similar to GCM case except we
134 must supply all data in one chunk (i.e. no update, final) and the
135 message length must be supplied if AAD is used. Add algorithm test
139 *) Initial version of POST overhaul. Add POST callback to allow the status
140 of POST to be monitored and/or failures induced. Modify fips_test_suite
141 to use callback. Always run all selftests even if one fails.
144 *) XTS support including algorithm test driver in the fips_gcmtest program.
145 Note: this does increase the maximum key length from 32 to 64 bytes but
146 there should be no binary compatibility issues as existing applications
147 will never use XTS mode.
150 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
151 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
152 performs algorithm blocking for unapproved PRNG types. Also do not
153 set PRNG type in FIPS_mode_set(): leave this to the application.
154 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
155 the standard OpenSSL PRNG: set additional data to a date time vector.
158 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
159 This shouldn't present any incompatibility problems because applications
160 shouldn't be using these directly and any that are will need to rethink
161 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
164 *) Extensive self tests and health checking required by SP800-90 DRBG.
165 Remove strength parameter from FIPS_drbg_instantiate and always
166 instantiate at maximum supported strength.
169 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
172 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
175 *) New function DH_compute_key_padded() to compute a DH key and pad with
176 leading zeroes if needed: this complies with SP800-56A et al.
179 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
180 anything, incomplete, subject to change and largely untested at present.
183 *) Modify fipscanisteronly build option to only build the necessary object
184 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
187 *) Add experimental option FIPSSYMS to give all symbols in
188 fipscanister.o and FIPS or fips prefix. This will avoid
189 conflicts with future versions of OpenSSL. Add perl script
190 util/fipsas.pl to preprocess assembly language source files
191 and rename any affected symbols.
194 *) Add selftest checks and algorithm block of non-fips algorithms in
195 FIPS mode. Remove DES2 from selftests.
198 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
199 return internal method without any ENGINE dependencies. Add new
200 tiny fips sign and verify functions.
203 *) New build option no-ec2m to disable characteristic 2 code.
206 *) New build option "fipscanisteronly". This only builds fipscanister.o
207 and (currently) associated fips utilities. Uses the file Makefile.fips
208 instead of Makefile.org as the prototype.
211 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
212 Update fips_gcmtest to use IV generator.
215 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
216 setting output buffer to NULL. The *Final function must be
217 called although it will not retrieve any additional data. The tag
218 can be set or retrieved with a ctrl. The IV length is by default 12
219 bytes (96 bits) but can be set to an alternative value. If the IV
220 length exceeds the maximum IV length (currently 16 bytes) it cannot be
224 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
225 underlying do_cipher function handles all cipher semantics itself
226 including padding and finalisation. This is useful if (for example)
227 an ENGINE cipher handles block padding itself. The behaviour of
228 do_cipher is subtly changed if this flag is set: the return value
229 is the number of characters written to the output buffer (zero is
230 no longer an error code) or a negative error code. Also if the
231 input buffer is NULL and length 0 finalisation should be performed.
234 *) If a candidate issuer certificate is already part of the constructed
235 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
238 *) Improve forward-security support: add functions
240 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
241 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
243 for use by SSL/TLS servers; the callback function will be called whenever a
244 new session is created, and gets to decide whether the session may be
245 cached to make it resumable (return 0) or not (return 1). (As by the
246 SSL/TLS protocol specifications, the session_id sent by the server will be
247 empty to indicate that the session is not resumable; also, the server will
248 not generate RFC 4507 (RFC 5077) session tickets.)
250 A simple reasonable callback implementation is to return is_forward_secure.
251 This parameter will be set to 1 or 0 depending on the ciphersuite selected
252 by the SSL/TLS server library, indicating whether it can provide forward
254 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
256 *) New -verify_name option in command line utilities to set verification
260 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
261 Add CMAC pkey methods.
264 *) Experimental regnegotiation in s_server -www mode. If the client
265 browses /reneg connection is renegotiated. If /renegcert it is
266 renegotiated requesting a certificate.
269 *) Add an "external" session cache for debugging purposes to s_server. This
270 should help trace issues which normally are only apparent in deployed
271 multi-process servers.
274 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
275 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
276 BIO_set_cipher() and some obscure PEM functions were changed so they
277 can now return an error. The RAND changes required a change to the
278 RAND_METHOD structure.
281 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
282 a gcc attribute to warn if the result of a function is ignored. This
283 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
284 whose return value is often ignored.
287 Changes between 1.0.1e and 1.0.2 [xx XXX xxxx]
289 *) Keep original DTLS digest and encryption contexts in retransmission
290 structures so we can use the previous session parameters if they need
291 to be resent. (CVE-2013-6450)
294 *) TLS pad extension: draft-agl-tls-padding-02
296 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
297 TLS client Hello record length value would otherwise be > 255 and
298 less that 512 pad with a dummy extension containing zeroes so it
299 is at least 512 bytes long.
301 To enable it use an unused extension number (for example chrome uses
304 e.g. -DTLSEXT_TYPE_padding=35655
306 Since the extension is ignored the actual number doesn't matter as long
307 as it doesn't clash with any existing extension.
309 This will be updated when the extension gets an official number.
311 [Adam Langley, Steve Henson]
313 *) Add functions to allocate and set the fields of an ECDSA_METHOD
315 [Douglas E. Engert, Steve Henson]
317 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
318 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
319 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
320 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
321 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
322 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
323 [Rob Stradling, Adam Langley]
325 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
326 difference in days and seconds between two tm or ASN1_TIME structures.
329 *) Add -rev test option to s_server to just reverse order of characters
330 received by client and send back to server. Also prints an abbreviated
331 summary of the connection parameters.
334 *) New option -brief for s_client and s_server to print out a brief summary
335 of connection parameters.
338 *) Add callbacks for arbitrary TLS extensions.
339 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
341 *) New option -crl_download in several openssl utilities to download CRLs
342 from CRLDP extension in certificates.
345 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
348 *) New function X509_CRL_diff to generate a delta CRL from the difference
349 of two full CRLs. Add support to "crl" utility.
352 *) New functions to set lookup_crls function and to retrieve
353 X509_STORE from X509_STORE_CTX.
356 *) Print out deprecated issuer and subject unique ID fields in
360 *) Extend OCSP I/O functions so they can be used for simple general purpose
361 HTTP as well as OCSP. New wrapper function which can be used to download
362 CRLs using the OCSP API.
365 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
368 *) SSL_CONF* functions. These provide a common framework for application
369 configuration using configuration files or command lines.
372 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
373 message callback and prints the results. Needs compile time option
374 "enable-ssl-trace". New options to s_client and s_server to enable
378 *) New ctrl and macro to retrieve supported points extensions.
379 Print out extension in s_server and s_client.
382 *) New functions to retrieve certificate signature and signature
386 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
390 *) New Suite B modes for TLS code. These use and enforce the requirements
391 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
392 only use Suite B curves. The Suite B modes can be set by using the
393 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
396 *) New chain verification flags for Suite B levels of security. Check
397 algorithms are acceptable when flags are set in X509_verify_cert.
400 *) Make tls1_check_chain return a set of flags indicating checks passed
401 by a certificate chain. Add additional tests to handle client
402 certificates: checks for matching certificate type and issuer name
406 *) If an attempt is made to use a signature algorithm not in the peer
407 preference list abort the handshake. If client has no suitable
408 signature algorithms in response to a certificate request do not
412 *) If server EC tmp key is not in client preference list abort handshake.
415 *) Add support for certificate stores in CERT structure. This makes it
416 possible to have different stores per SSL structure or one store in
417 the parent SSL_CTX. Include distint stores for certificate chain
418 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
419 to build and store a certificate chain in CERT structure: returing
420 an error if the chain cannot be built: this will allow applications
421 to test if a chain is correctly configured.
423 Note: if the CERT based stores are not set then the parent SSL_CTX
424 store is used to retain compatibility with existing behaviour.
428 *) New function ssl_set_client_disabled to set a ciphersuite disabled
429 mask based on the current session, check mask when sending client
430 hello and checking the requested ciphersuite.
433 *) New ctrls to retrieve and set certificate types in a certificate
434 request message. Print out received values in s_client. If certificate
435 types is not set with custom values set sensible values based on
436 supported signature algorithms.
439 *) Support for distinct client and server supported signature algorithms.
442 *) Add certificate callback. If set this is called whenever a certificate
443 is required by client or server. An application can decide which
444 certificate chain to present based on arbitrary criteria: for example
445 supported signature algorithms. Add very simple example to s_server.
446 This fixes many of the problems and restrictions of the existing client
447 certificate callback: for example you can now clear an existing
448 certificate and specify the whole chain.
451 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
452 the certificate can be used for (if anything). Set valid_flags field
453 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
454 to have similar checks in it.
456 Add new "cert_flags" field to CERT structure and include a "strict mode".
457 This enforces some TLS certificate requirements (such as only permitting
458 certificate signature algorithms contained in the supported algorithms
459 extension) which some implementations ignore: this option should be used
460 with caution as it could cause interoperability issues.
463 *) Update and tidy signature algorithm extension processing. Work out
464 shared signature algorithms based on preferences and peer algorithms
465 and print them out in s_client and s_server. Abort handshake if no
466 shared signature algorithms.
469 *) Add new functions to allow customised supported signature algorithms
470 for SSL and SSL_CTX structures. Add options to s_client and s_server
474 *) New function SSL_certs_clear() to delete all references to certificates
475 from an SSL structure. Before this once a certificate had been added
476 it couldn't be removed.
479 *) Integrate hostname, email address and IP address checking with certificate
480 verification. New verify options supporting checking in opensl utility.
483 *) Fixes and wildcard matching support to hostname and email checking
484 functions. Add manual page.
485 [Florian Weimer (Red Hat Product Security Team)]
487 *) New functions to check a hostname email or IP address against a
488 certificate. Add options x509 utility to print results of checks against
492 *) Fix OCSP checking.
493 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
495 *) Initial experimental support for explicitly trusted non-root CAs.
496 OpenSSL still tries to build a complete chain to a root but if an
497 intermediate CA has a trust setting included that is used. The first
498 setting is used: whether to trust (e.g., -addtrust option to the x509
502 *) Add -trusted_first option which attempts to find certificates in the
503 trusted store even if an untrusted chain is also supplied.
506 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
507 platform support for Linux and Android.
510 *) Support for linux-x32, ILP32 environment in x86_64 framework.
513 *) RFC 5878 (TLS Authorization Extensions) support.
514 [Emilia Kasper, Adam Langley, Ben Laurie (Google)]
516 *) Experimental multi-implementation support for FIPS capable OpenSSL.
517 When in FIPS mode the approved implementations are used as normal,
518 when not in FIPS mode the internal unapproved versions are used instead.
519 This means that the FIPS capable OpenSSL isn't forced to use the
520 (often lower perfomance) FIPS implementations outside FIPS mode.
523 *) Transparently support X9.42 DH parameters when calling
524 PEM_read_bio_DHparameters. This means existing applications can handle
525 the new parameter format automatically.
528 *) Initial experimental support for X9.42 DH parameter format: mainly
529 to support use of 'q' parameter for RFC5114 parameters.
532 *) Add DH parameters from RFC5114 including test data to dhtest.
535 *) Support for automatic EC temporary key parameter selection. If enabled
536 the most preferred EC parameters are automatically used instead of
537 hardcoded fixed parameters. Now a server just has to call:
538 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
539 support ECDH and use the most appropriate parameters.
542 *) Enhance and tidy EC curve and point format TLS extension code. Use
543 static structures instead of allocation if default values are used.
544 New ctrls to set curves we wish to support and to retrieve shared curves.
545 Print out shared curves in s_server. New options to s_server and s_client
546 to set list of supported curves.
549 *) New ctrls to retrieve supported signature algorithms and
550 supported curve values as an array of NIDs. Extend openssl utility
551 to print out received values.
554 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
555 between NIDs and the more common NIST names such as "P-256". Enhance
556 ecparam utility and ECC method to recognise the NIST names for curves.
559 *) Enhance SSL/TLS certificate chain handling to support different
560 chains for each certificate instead of one chain in the parent SSL_CTX.
563 *) Support for fixed DH ciphersuite client authentication: where both
564 server and client use DH certificates with common parameters.
567 *) Support for fixed DH ciphersuites: those requiring DH server
571 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
573 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
574 supporting platforms or when small records were transferred.
575 [Andy Polyakov, Steve Henson]
577 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
579 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
581 This addresses the flaw in CBC record processing discovered by
582 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
583 at: http://www.isg.rhul.ac.uk/tls/
585 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
586 Security Group at Royal Holloway, University of London
587 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
588 Emilia Käsper for the initial patch.
590 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
592 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
593 ciphersuites which can be exploited in a denial of service attack.
594 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
595 and detecting this bug and to Wolfgang Ettlinger
596 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
600 *) Return an error when checking OCSP signatures when key is NULL.
601 This fixes a DoS attack. (CVE-2013-0166)
604 *) Make openssl verify return errors.
605 [Chris Palmer <palmer@google.com> and Ben Laurie]
607 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
608 the right response is stapled. Also change SSL_get_certificate()
609 so it returns the certificate actually sent.
610 See http://rt.openssl.org/Ticket/Display.html?id=2836.
611 [Rob Stradling <rob.stradling@comodo.com>]
613 *) Fix possible deadlock when decoding public keys.
616 *) Don't use TLS 1.0 record version number in initial client hello
620 Changes between 1.0.1b and 1.0.1c [10 May 2012]
622 *) Sanity check record length before skipping explicit IV in TLS
623 1.2, 1.1 and DTLS to fix DoS attack.
625 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
626 fuzzing as a service testing platform.
630 *) Initialise tkeylen properly when encrypting CMS messages.
631 Thanks to Solar Designer of Openwall for reporting this issue.
634 *) In FIPS mode don't try to use composite ciphers as they are not
638 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
640 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
641 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
642 mean any application compiled against OpenSSL 1.0.0 headers setting
643 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
644 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
645 0x10000000L Any application which was previously compiled against
646 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
647 will need to be recompiled as a result. Letting be results in
648 inability to disable specifically TLS 1.1 and in client context,
649 in unlike event, limit maximum offered version to TLS 1.0 [see below].
652 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
653 disable just protocol X, but all protocols above X *if* there are
654 protocols *below* X still enabled. In more practical terms it means
655 that if application wants to disable TLS1.0 in favor of TLS1.1 and
656 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
657 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
661 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
663 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
664 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
665 in CRYPTO_realloc_clean.
667 Thanks to Tavis Ormandy, Google Security Team, for discovering this
668 issue and to Adam Langley <agl@chromium.org> for fixing it.
670 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
672 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
675 *) Workarounds for some broken servers that "hang" if a client hello
676 record length exceeds 255 bytes.
678 1. Do not use record version number > TLS 1.0 in initial client
679 hello: some (but not all) hanging servers will now work.
680 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
681 the number of ciphers sent in the client hello. This should be
682 set to an even number, such as 50, for example by passing:
683 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
684 Most broken servers should now work.
685 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
686 TLS 1.2 client support entirely.
689 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
692 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
694 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
695 STRING form instead of a DigestInfo.
698 *) The format used for MDC2 RSA signatures is inconsistent between EVP
699 and the RSA_sign/RSA_verify functions. This was made more apparent when
700 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
701 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
702 the correct format in RSA_verify so both forms transparently work.
705 *) Some servers which support TLS 1.0 can choke if we initially indicate
706 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
707 encrypted premaster secret. As a workaround use the maximum pemitted
708 client version in client hello, this should keep such servers happy
709 and still work with previous versions of OpenSSL.
712 *) Add support for TLS/DTLS heartbeats.
713 [Robin Seggelmann <seggelmann@fh-muenster.de>]
715 *) Add support for SCTP.
716 [Robin Seggelmann <seggelmann@fh-muenster.de>]
718 *) Improved PRNG seeding for VOS.
719 [Paul Green <Paul.Green@stratus.com>]
721 *) Extensive assembler packs updates, most notably:
723 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
724 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
725 - x86_64: bit-sliced AES implementation;
726 - ARM: NEON support, contemporary platforms optimizations;
727 - s390x: z196 support;
728 - *: GHASH and GF(2^m) multiplication implementations;
732 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
733 (removal of unnecessary code)
734 [Peter Sylvester <peter.sylvester@edelweb.fr>]
736 *) Add TLS key material exporter from RFC 5705.
739 *) Add DTLS-SRTP negotiation from RFC 5764.
742 *) Add Next Protocol Negotiation,
743 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
744 disabled with a no-npn flag to config or Configure. Code donated
746 [Adam Langley <agl@google.com> and Ben Laurie]
748 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
749 NIST-P256, NIST-P521, with constant-time single point multiplication on
750 typical inputs. Compiler support for the nonstandard type __uint128_t is
751 required to use this (present in gcc 4.4 and later, for 64-bit builds).
752 Code made available under Apache License version 2.0.
754 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
755 line to include this in your build of OpenSSL, and run "make depend" (or
756 "make update"). This enables the following EC_METHODs:
758 EC_GFp_nistp224_method()
759 EC_GFp_nistp256_method()
760 EC_GFp_nistp521_method()
762 EC_GROUP_new_by_curve_name() will automatically use these (while
763 EC_GROUP_new_curve_GFp() currently prefers the more flexible
765 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
767 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
768 all platforms. Move ssize_t definition from e_os.h to the public
769 header file e_os2.h as it now appears in public header file cms.h
772 *) New -sigopt option to the ca, req and x509 utilities. Additional
773 signature parameters can be passed using this option and in
777 *) Add RSA PSS signing function. This will generate and set the
778 appropriate AlgorithmIdentifiers for PSS based on those in the
779 corresponding EVP_MD_CTX structure. No application support yet.
782 *) Support for companion algorithm specific ASN1 signing routines.
783 New function ASN1_item_sign_ctx() signs a pre-initialised
784 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
785 the appropriate parameters.
788 *) Add new algorithm specific ASN1 verification initialisation function
789 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
790 handling will be the same no matter what EVP_PKEY_METHOD is used.
791 Add a PSS handler to support verification of PSS signatures: checked
792 against a number of sample certificates.
795 *) Add signature printing for PSS. Add PSS OIDs.
796 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
798 *) Add algorithm specific signature printing. An individual ASN1 method
799 can now print out signatures instead of the standard hex dump.
801 More complex signatures (e.g. PSS) can print out more meaningful
802 information. Include DSA version that prints out the signature
806 *) Password based recipient info support for CMS library: implementing
810 *) Split password based encryption into PBES2 and PBKDF2 functions. This
811 neatly separates the code into cipher and PBE sections and is required
812 for some algorithms that split PBES2 into separate pieces (such as
816 *) Session-handling fixes:
817 - Fix handling of connections that are resuming with a session ID,
818 but also support Session Tickets.
819 - Fix a bug that suppressed issuing of a new ticket if the client
820 presented a ticket with an expired session.
821 - Try to set the ticket lifetime hint to something reasonable.
822 - Make tickets shorter by excluding irrelevant information.
823 - On the client side, don't ignore renewed tickets.
824 [Adam Langley, Bodo Moeller (Google)]
826 *) Fix PSK session representation.
829 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
831 This work was sponsored by Intel.
834 *) Add GCM support to TLS library. Some custom code is needed to split
835 the IV between the fixed (from PRF) and explicit (from TLS record)
836 portions. This adds all GCM ciphersuites supported by RFC5288 and
837 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
838 add a special AESGCM string for GCM only.
841 *) Expand range of ctrls for AES GCM. Permit setting invocation
842 field on decrypt and retrieval of invocation field only on encrypt.
845 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
846 As required by RFC5289 these ciphersuites cannot be used if for
847 versions of TLS earlier than 1.2.
850 *) For FIPS capable OpenSSL interpret a NULL default public key method
851 as unset and return the appopriate default but do *not* set the default.
852 This means we can return the appopriate method in applications that
853 swicth between FIPS and non-FIPS modes.
856 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
857 ENGINE is used then we cannot handle that in the FIPS module so we
858 keep original code iff non-FIPS operations are allowed.
861 *) Add -attime option to openssl utilities.
862 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
864 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
867 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
868 FIPS EC methods unconditionally for now.
871 *) New build option no-ec2m to disable characteristic 2 code.
874 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
875 all cases can be covered as some introduce binary incompatibilities.
878 *) Redirect RSA operations to FIPS module including keygen,
879 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
882 *) Add similar low level API blocking to ciphers.
885 *) Low level digest APIs are not approved in FIPS mode: any attempt
886 to use these will cause a fatal error. Applications that *really* want
887 to use them can use the private_* version instead.
890 *) Redirect cipher operations to FIPS module for FIPS builds.
893 *) Redirect digest operations to FIPS module for FIPS builds.
896 *) Update build system to add "fips" flag which will link in fipscanister.o
897 for static and shared library builds embedding a signature if needed.
900 *) Output TLS supported curves in preference order instead of numerical
901 order. This is currently hardcoded for the highest order curves first.
902 This should be configurable so applications can judge speed vs strength.
905 *) Add TLS v1.2 server support for client authentication.
908 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
912 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
913 FIPS modules versions.
916 *) Add TLS v1.2 client side support for client authentication. Keep cache
917 of handshake records longer as we don't know the hash algorithm to use
918 until after the certificate request message is received.
921 *) Initial TLS v1.2 client support. Add a default signature algorithms
922 extension including all the algorithms we support. Parse new signature
923 format in client key exchange. Relax some ECC signing restrictions for
924 TLS v1.2 as indicated in RFC5246.
927 *) Add server support for TLS v1.2 signature algorithms extension. Switch
928 to new signature format when needed using client digest preference.
929 All server ciphersuites should now work correctly in TLS v1.2. No client
930 support yet and no support for client certificates.
933 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
934 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
935 ciphersuites. At present only RSA key exchange ciphersuites work with
936 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
937 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
938 and version checking.
941 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
942 with this defined it will not be affected by any changes to ssl internal
943 structures. Add several utility functions to allow openssl application
944 to work with OPENSSL_NO_SSL_INTERN defined.
948 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
950 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
953 *) Permit abbreviated handshakes when renegotiating using the function
954 SSL_renegotiate_abbreviated().
955 [Robin Seggelmann <seggelmann@fh-muenster.de>]
957 *) Add call to ENGINE_register_all_complete() to
958 ENGINE_load_builtin_engines(), so some implementations get used
959 automatically instead of needing explicit application support.
962 *) Add support for TLS key exporter as described in RFC5705.
963 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
965 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
966 a few changes are required:
968 Add SSL_OP_NO_TLSv1_1 flag.
970 Update version checking logic to handle version 1.1.
971 Add explicit IV handling (ported from DTLS code).
972 Add command line options to s_client/s_server.
975 Changes between 1.0.0j and 1.0.0k [5 Feb 2013]
977 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
979 This addresses the flaw in CBC record processing discovered by
980 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
981 at: http://www.isg.rhul.ac.uk/tls/
983 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
984 Security Group at Royal Holloway, University of London
985 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
986 Emilia Käsper for the initial patch.
988 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
990 *) Return an error when checking OCSP signatures when key is NULL.
991 This fixes a DoS attack. (CVE-2013-0166)
994 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
995 the right response is stapled. Also change SSL_get_certificate()
996 so it returns the certificate actually sent.
997 See http://rt.openssl.org/Ticket/Display.html?id=2836.
999 [Rob Stradling <rob.stradling@comodo.com>]
1001 *) Fix possible deadlock when decoding public keys.
1004 Changes between 1.0.0i and 1.0.0j [10 May 2012]
1006 [NB: OpenSSL 1.0.0i and later 1.0.0 patch levels were released after
1009 *) Sanity check record length before skipping explicit IV in DTLS
1012 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1013 fuzzing as a service testing platform.
1017 *) Initialise tkeylen properly when encrypting CMS messages.
1018 Thanks to Solar Designer of Openwall for reporting this issue.
1021 Changes between 1.0.0h and 1.0.0i [19 Apr 2012]
1023 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1024 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1025 in CRYPTO_realloc_clean.
1027 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1028 issue and to Adam Langley <agl@chromium.org> for fixing it.
1030 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1032 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
1034 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
1035 in CMS and PKCS7 code. When RSA decryption fails use a random key for
1036 content decryption and always return the same error. Note: this attack
1037 needs on average 2^20 messages so it only affects automated senders. The
1038 old behaviour can be reenabled in the CMS code by setting the
1039 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
1040 an MMA defence is not necessary.
1041 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
1042 this issue. (CVE-2012-0884)
1045 *) Fix CVE-2011-4619: make sure we really are receiving a
1046 client hello before rejecting multiple SGC restarts. Thanks to
1047 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
1050 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
1052 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1053 Thanks to Antonio Martin, Enterprise Secure Access Research and
1054 Development, Cisco Systems, Inc. for discovering this bug and
1055 preparing a fix. (CVE-2012-0050)
1058 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
1060 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1061 of the Vaudenay padding oracle attack on CBC mode encryption
1062 which enables an efficient plaintext recovery attack against
1063 the OpenSSL implementation of DTLS. Their attack exploits timing
1064 differences arising during decryption processing. A research
1065 paper describing this attack can be found at:
1066 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1067 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1068 Security Group at Royal Holloway, University of London
1069 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1070 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1071 for preparing the fix. (CVE-2011-4108)
1072 [Robin Seggelmann, Michael Tuexen]
1074 *) Clear bytes used for block padding of SSL 3.0 records.
1076 [Adam Langley (Google)]
1078 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1079 Kadianakis <desnacked@gmail.com> for discovering this issue and
1080 Adam Langley for preparing the fix. (CVE-2011-4619)
1081 [Adam Langley (Google)]
1083 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
1084 [Andrey Kulikov <amdeich@gmail.com>]
1086 *) Prevent malformed RFC3779 data triggering an assertion failure.
1087 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1088 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1089 [Rob Austein <sra@hactrn.net>]
1091 *) Improved PRNG seeding for VOS.
1092 [Paul Green <Paul.Green@stratus.com>]
1094 *) Fix ssl_ciph.c set-up race.
1095 [Adam Langley (Google)]
1097 *) Fix spurious failures in ecdsatest.c.
1098 [Emilia Käsper (Google)]
1100 *) Fix the BIO_f_buffer() implementation (which was mixing different
1101 interpretations of the '..._len' fields).
1102 [Adam Langley (Google)]
1104 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1105 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1106 threads won't reuse the same blinding coefficients.
1108 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1109 lock to call BN_BLINDING_invert_ex, and avoids one use of
1110 BN_BLINDING_update for each BN_BLINDING structure (previously,
1111 the last update always remained unused).
1112 [Emilia Käsper (Google)]
1114 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
1115 [Bob Buckholz (Google)]
1117 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
1119 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
1120 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
1121 [Kaspar Brand <ossl@velox.ch>]
1123 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1124 for multi-threaded use of ECDH. (CVE-2011-3210)
1125 [Adam Langley (Google)]
1127 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1130 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
1131 signature public key algorithm by using OID xref utilities instead.
1132 Before this you could only use some ECC ciphersuites with SHA1 only.
1135 *) Add protection against ECDSA timing attacks as mentioned in the paper
1136 by Billy Bob Brumley and Nicola Tuveri, see:
1138 http://eprint.iacr.org/2011/232.pdf
1140 [Billy Bob Brumley and Nicola Tuveri]
1142 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
1144 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1145 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1147 *) Fix bug in string printing code: if *any* escaping is enabled we must
1148 escape the escape character (backslash) or the resulting string is
1152 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
1154 *) Disable code workaround for ancient and obsolete Netscape browsers
1155 and servers: an attacker can use it in a ciphersuite downgrade attack.
1156 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1159 *) Fixed J-PAKE implementation error, originally discovered by
1160 Sebastien Martini, further info and confirmation from Stefan
1161 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1164 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
1166 *) Fix extension code to avoid race conditions which can result in a buffer
1167 overrun vulnerability: resumed sessions must not be modified as they can
1168 be shared by multiple threads. CVE-2010-3864
1171 *) Fix WIN32 build system to correctly link an ENGINE directory into
1175 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
1177 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
1179 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
1181 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
1183 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
1184 context. The operation can be customised via the ctrl mechanism in
1185 case ENGINEs want to include additional functionality.
1188 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
1191 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
1192 output hashes compatible with older versions of OpenSSL.
1193 [Willy Weisz <weisz@vcpc.univie.ac.at>]
1195 *) Fix compression algorithm handling: if resuming a session use the
1196 compression algorithm of the resumed session instead of determining
1197 it from client hello again. Don't allow server to change algorithm.
1200 *) Add load_crls() function to apps tidying load_certs() too. Add option
1201 to verify utility to allow additional CRLs to be included.
1204 *) Update OCSP request code to permit adding custom headers to the request:
1205 some responders need this.
1208 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
1210 [Julia Lawall <julia@diku.dk>]
1212 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
1213 needlessly dereferenced structures, used obsolete functions and
1214 didn't handle all updated verify codes correctly.
1217 *) Disable MD2 in the default configuration.
1220 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
1221 indicate the initial BIO being pushed or popped. This makes it possible
1222 to determine whether the BIO is the one explicitly called or as a result
1223 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
1224 it handles reference counts correctly and doesn't zero out the I/O bio
1225 when it is not being explicitly popped. WARNING: applications which
1226 included workarounds for the old buggy behaviour will need to be modified
1227 or they could free up already freed BIOs.
1230 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
1231 renaming to all platforms (within the 0.9.8 branch, this was
1232 done conditionally on Netware platforms to avoid a name clash).
1233 [Guenter <lists@gknw.net>]
1235 *) Add ECDHE and PSK support to DTLS.
1236 [Michael Tuexen <tuexen@fh-muenster.de>]
1238 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
1242 *) Add "missing" function EVP_MD_flags() (without this the only way to
1243 retrieve a digest flags is by accessing the structure directly. Update
1244 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
1245 or cipher is registered as in the "from" argument. Print out all
1246 registered digests in the dgst usage message instead of manually
1247 attempting to work them out.
1250 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
1251 this allows the use of compression and extensions. Change default cipher
1252 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
1253 by default unless an application cipher string requests it.
1256 *) Alter match criteria in PKCS12_parse(). It used to try to use local
1257 key ids to find matching certificates and keys but some PKCS#12 files
1258 don't follow the (somewhat unwritten) rules and this strategy fails.
1259 Now just gather all certificates together and the first private key
1260 then look for the first certificate that matches the key.
1263 *) Support use of registered digest and cipher names for dgst and cipher
1264 commands instead of having to add each one as a special case. So now
1271 openssl dgst -sha256 foo
1273 and this works for ENGINE based algorithms too.
1277 *) Update Gost ENGINE to support parameter files.
1278 [Victor B. Wagner <vitus@cryptocom.ru>]
1280 *) Support GeneralizedTime in ca utility.
1281 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
1283 *) Enhance the hash format used for certificate directory links. The new
1284 form uses the canonical encoding (meaning equivalent names will work
1285 even if they aren't identical) and uses SHA1 instead of MD5. This form
1286 is incompatible with the older format and as a result c_rehash should
1287 be used to rebuild symbolic links.
1290 *) Make PKCS#8 the default write format for private keys, replacing the
1291 traditional format. This form is standardised, more secure and doesn't
1292 include an implicit MD5 dependency.
1295 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
1296 committed to OpenSSL should pass this lot as a minimum.
1299 *) Add session ticket override functionality for use by EAP-FAST.
1300 [Jouni Malinen <j@w1.fi>]
1302 *) Modify HMAC functions to return a value. Since these can be implemented
1303 in an ENGINE errors can occur.
1306 *) Type-checked OBJ_bsearch_ex.
1309 *) Type-checked OBJ_bsearch. Also some constification necessitated
1310 by type-checking. Still to come: TXT_DB, bsearch(?),
1311 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
1315 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
1316 seconds to a tm structure directly, instead of going through OS
1317 specific date routines. This avoids any issues with OS routines such
1318 as the year 2038 bug. New *_adj() functions for ASN1 time structures
1319 and X509_time_adj_ex() to cover the extended range. The existing
1320 X509_time_adj() is still usable and will no longer have any date issues.
1323 *) Delta CRL support. New use deltas option which will attempt to locate
1324 and search any appropriate delta CRLs available.
1326 This work was sponsored by Google.
1329 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
1330 code and add additional score elements. Validate alternate CRL paths
1331 as part of the CRL checking and indicate a new error "CRL path validation
1332 error" in this case. Applications wanting additional details can use
1333 the verify callback and check the new "parent" field. If this is not
1334 NULL CRL path validation is taking place. Existing applications wont
1335 see this because it requires extended CRL support which is off by
1338 This work was sponsored by Google.
1341 *) Support for freshest CRL extension.
1343 This work was sponsored by Google.
1346 *) Initial indirect CRL support. Currently only supported in the CRLs
1347 passed directly and not via lookup. Process certificate issuer
1348 CRL entry extension and lookup CRL entries by bother issuer name
1349 and serial number. Check and process CRL issuer entry in IDP extension.
1351 This work was sponsored by Google.
1354 *) Add support for distinct certificate and CRL paths. The CRL issuer
1355 certificate is validated separately in this case. Only enabled if
1356 an extended CRL support flag is set: this flag will enable additional
1357 CRL functionality in future.
1359 This work was sponsored by Google.
1362 *) Add support for policy mappings extension.
1364 This work was sponsored by Google.
1367 *) Fixes to pathlength constraint, self issued certificate handling,
1368 policy processing to align with RFC3280 and PKITS tests.
1370 This work was sponsored by Google.
1373 *) Support for name constraints certificate extension. DN, email, DNS
1374 and URI types are currently supported.
1376 This work was sponsored by Google.
1379 *) To cater for systems that provide a pointer-based thread ID rather
1380 than numeric, deprecate the current numeric thread ID mechanism and
1381 replace it with a structure and associated callback type. This
1382 mechanism allows a numeric "hash" to be extracted from a thread ID in
1383 either case, and on platforms where pointers are larger than 'long',
1384 mixing is done to help ensure the numeric 'hash' is usable even if it
1385 can't be guaranteed unique. The default mechanism is to use "&errno"
1386 as a pointer-based thread ID to distinguish between threads.
1388 Applications that want to provide their own thread IDs should now use
1389 CRYPTO_THREADID_set_callback() to register a callback that will call
1390 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
1392 Note that ERR_remove_state() is now deprecated, because it is tied
1393 to the assumption that thread IDs are numeric. ERR_remove_state(0)
1394 to free the current thread's error state should be replaced by
1395 ERR_remove_thread_state(NULL).
1397 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
1398 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
1399 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
1400 application was previously providing a numeric thread callback that
1401 was inappropriate for distinguishing threads, then uniqueness might
1402 have been obtained with &errno that happened immediately in the
1403 intermediate development versions of OpenSSL; this is no longer the
1404 case, the numeric thread callback will now override the automatic use
1406 [Geoff Thorpe, with help from Bodo Moeller]
1408 *) Initial support for different CRL issuing certificates. This covers a
1409 simple case where the self issued certificates in the chain exist and
1410 the real CRL issuer is higher in the existing chain.
1412 This work was sponsored by Google.
1415 *) Removed effectively defunct crypto/store from the build.
1418 *) Revamp of STACK to provide stronger type-checking. Still to come:
1419 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
1420 ASN1_STRING, CONF_VALUE.
1423 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
1424 RAM on SSL connections. This option can save about 34k per idle SSL.
1427 *) Revamp of LHASH to provide stronger type-checking. Still to come:
1428 STACK, TXT_DB, bsearch, qsort.
1431 *) Initial support for Cryptographic Message Syntax (aka CMS) based
1432 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
1433 support for data, signedData, compressedData, digestedData and
1434 encryptedData, envelopedData types included. Scripts to check against
1435 RFC4134 examples draft and interop and consistency checks of many
1436 content types and variants.
1439 *) Add options to enc utility to support use of zlib compression BIO.
1442 *) Extend mk1mf to support importing of options and assembly language
1443 files from Configure script, currently only included in VC-WIN32.
1444 The assembly language rules can now optionally generate the source
1445 files from the associated perl scripts.
1448 *) Implement remaining functionality needed to support GOST ciphersuites.
1449 Interop testing has been performed using CryptoPro implementations.
1450 [Victor B. Wagner <vitus@cryptocom.ru>]
1452 *) s390x assembler pack.
1455 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
1459 *) Implement Opaque PRF Input TLS extension as specified in
1460 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
1461 official specification yet and no extension type assignment by
1462 IANA exists, this extension (for now) will have to be explicitly
1463 enabled when building OpenSSL by providing the extension number
1464 to use. For example, specify an option
1466 -DTLSEXT_TYPE_opaque_prf_input=0x9527
1468 to the "config" or "Configure" script to enable the extension,
1469 assuming extension number 0x9527 (which is a completely arbitrary
1470 and unofficial assignment based on the MD5 hash of the Internet
1471 Draft). Note that by doing so, you potentially lose
1472 interoperability with other TLS implementations since these might
1473 be using the same extension number for other purposes.
1475 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
1476 opaque PRF input value to use in the handshake. This will create
1477 an interal copy of the length-'len' string at 'src', and will
1478 return non-zero for success.
1480 To get more control and flexibility, provide a callback function
1483 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
1484 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
1488 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
1491 Callback function 'cb' will be called in handshakes, and is
1492 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
1493 Argument 'arg' is for application purposes (the value as given to
1494 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
1495 be provided to the callback function). The callback function
1496 has to return non-zero to report success: usually 1 to use opaque
1497 PRF input just if possible, or 2 to enforce use of the opaque PRF
1498 input. In the latter case, the library will abort the handshake
1499 if opaque PRF input is not successfully negotiated.
1501 Arguments 'peerinput' and 'len' given to the callback function
1502 will always be NULL and 0 in the case of a client. A server will
1503 see the client's opaque PRF input through these variables if
1504 available (NULL and 0 otherwise). Note that if the server
1505 provides an opaque PRF input, the length must be the same as the
1506 length of the client's opaque PRF input.
1508 Note that the callback function will only be called when creating
1509 a new session (session resumption can resume whatever was
1510 previously negotiated), and will not be called in SSL 2.0
1511 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
1512 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
1513 for applications that need to enforce opaque PRF input.
1517 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1520 [Victor B. Wagner <vitus@cryptocom.ru>]
1522 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1523 RFC4507bis. The encrypted ticket format is an encrypted encoded
1524 SSL_SESSION structure, that way new session features are automatically
1527 If a client application caches session in an SSL_SESSION structure
1528 support is transparent because tickets are now stored in the encoded
1531 The SSL_CTX structure automatically generates keys for ticket
1532 protection in servers so again support should be possible
1533 with no application modification.
1535 If a client or server wishes to disable RFC4507 support then the option
1536 SSL_OP_NO_TICKET can be set.
1538 Add a TLS extension debugging callback to allow the contents of any client
1539 or server extensions to be examined.
1541 This work was sponsored by Google.
1544 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1545 OpenSSL should now compile cleanly on gcc 4.2
1546 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1548 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1549 support including streaming MAC support: this is required for GOST
1550 ciphersuite support.
1551 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1553 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1554 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1555 to output in BER and PEM format.
1558 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1559 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1560 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1561 ENGINE support for HMAC keys which are unextractable. New -mac and
1562 -macopt options to dgst utility.
1565 *) New option -sigopt to dgst utility. Update dgst to use
1566 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1567 alternative signing paramaters such as X9.31 or PSS in the dgst
1571 *) Change ssl_cipher_apply_rule(), the internal function that does
1572 the work each time a ciphersuite string requests enabling
1573 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1574 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1575 the order of disabled ciphersuites such that those ciphersuites
1576 that most recently went from enabled to disabled not only stay
1577 in order with respect to each other, but also have higher priority
1578 than other disabled ciphersuites the next time ciphersuites are
1581 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1582 the same ciphersuites as with "HIGH" alone, but in a specific
1583 order where the PSK ciphersuites come first (since they are the
1584 most recently disabled ciphersuites when "HIGH" is parsed).
1586 Also, change ssl_create_cipher_list() (using this new
1587 funcionality) such that between otherwise identical
1588 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1592 *) Change ssl_create_cipher_list() so that it automatically
1593 arranges the ciphersuites in reasonable order before starting
1594 to process the rule string. Thus, the definition for "DEFAULT"
1595 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1596 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1597 This makes it much easier to arrive at a reasonable default order
1598 in applications for which anonymous ciphers are OK (meaning
1599 that you can't actually use DEFAULT).
1600 [Bodo Moeller; suggested by Victor Duchovni]
1602 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1603 processing) into multiple integers instead of setting
1604 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1605 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1606 (These masks as well as the individual bit definitions are hidden
1607 away into the non-exported interface ssl/ssl_locl.h, so this
1608 change to the definition of the SSL_CIPHER structure shouldn't
1609 affect applications.) This give us more bits for each of these
1610 categories, so there is no longer a need to coagulate AES128 and
1611 AES256 into a single algorithm bit, and to coagulate Camellia128
1612 and Camellia256 into a single algorithm bit, which has led to all
1615 Thus, among other things, the kludge introduced in 0.9.7m and
1616 0.9.8e for masking out AES256 independently of AES128 or masking
1617 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1619 With the change, we also introduce new ciphersuite aliases that
1620 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1624 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1625 Use the leftmost N bytes of the signature input if the input is
1626 larger than the prime q (with N being the size in bytes of q).
1629 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1630 it yet and it is largely untested.
1633 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1636 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1637 some compilers (gcc 4.2 and later) reject their use. Safestack is
1638 reimplemented. Update ASN1 to avoid use of legacy functions.
1641 *) Win32/64 targets are linked with Winsock2.
1644 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1645 to external functions. This can be used to increase CRL handling
1646 efficiency especially when CRLs are very large by (for example) storing
1647 the CRL revoked certificates in a database.
1650 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1651 new CRLs added to a directory can be used. New command line option
1652 -verify_return_error to s_client and s_server. This causes real errors
1653 to be returned by the verify callback instead of carrying on no matter
1654 what. This reflects the way a "real world" verify callback would behave.
1657 *) GOST engine, supporting several GOST algorithms and public key formats.
1658 Kindly donated by Cryptocom.
1661 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1662 partitioned by DP are handled but no indirect CRL or reason partitioning
1663 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1664 selected via a scoring technique which handles IDP and AKID in CRLs.
1667 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1668 will ultimately be used for all verify operations: this will remove the
1669 X509_STORE dependency on certificate verification and allow alternative
1670 lookup methods. X509_STORE based implementations of these two callbacks.
1673 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1674 Modify get_crl() to find a valid (unexpired) CRL if possible.
1677 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1678 this would be called X509_CRL_cmp() but that name is already used by
1679 a function that just compares CRL issuer names. Cache several CRL
1680 extensions in X509_CRL structure and cache CRLDP in X509.
1683 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1684 this maps equivalent X509_NAME structures into a consistent structure.
1685 Name comparison can then be performed rapidly using memcmp().
1688 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1692 *) Allow digests to supply their own micalg string for S/MIME type using
1693 the ctrl EVP_MD_CTRL_MICALG.
1696 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1697 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1698 ctrl. It can then customise the structure before and/or after signing
1702 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1703 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1704 to free up any added signature OIDs.
1707 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1708 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1709 digest and cipher tables. New options added to openssl utility:
1710 list-message-digest-algorithms and list-cipher-algorithms.
1713 *) Change the array representation of binary polynomials: the list
1714 of degrees of non-zero coefficients is now terminated with -1.
1715 Previously it was terminated with 0, which was also part of the
1716 value; thus, the array representation was not applicable to
1717 polynomials where t^0 has coefficient zero. This change makes
1718 the array representation useful in a more general context.
1721 *) Various modifications and fixes to SSL/TLS cipher string
1722 handling. For ECC, the code now distinguishes between fixed ECDH
1723 with RSA certificates on the one hand and with ECDSA certificates
1724 on the other hand, since these are separate ciphersuites. The
1725 unused code for Fortezza ciphersuites has been removed.
1727 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1728 (not "ECDHE"). For consistency with the code for DH
1729 certificates, use of ECDH certificates is now considered ECDH
1730 authentication, not RSA or ECDSA authentication (the latter is
1731 merely the CA's signing algorithm and not actively used in the
1734 The temporary ciphersuite alias "ECCdraft" is no longer
1735 available, and ECC ciphersuites are no longer excluded from "ALL"
1736 and "DEFAULT". The following aliases now exist for RFC 4492
1737 ciphersuites, most of these by analogy with the DH case:
1739 kECDHr - ECDH cert, signed with RSA
1740 kECDHe - ECDH cert, signed with ECDSA
1741 kECDH - ECDH cert (signed with either RSA or ECDSA)
1742 kEECDH - ephemeral ECDH
1743 ECDH - ECDH cert or ephemeral ECDH
1749 AECDH - anonymous ECDH
1750 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1754 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1755 Use correct micalg parameters depending on digest(s) in signed message.
1758 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1759 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1762 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1763 an engine to register a method. Add ENGINE lookups for methods and
1764 functional reference processing.
1767 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1768 EVP_{Sign,Verify}* which allow an application to customise the signature
1772 *) New -resign option to smime utility. This adds one or more signers
1773 to an existing PKCS#7 signedData structure. Also -md option to use an
1774 alternative message digest algorithm for signing.
1777 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1778 create PKCS7 structures containing multiple signers. Update smime
1779 application to support multiple signers.
1782 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1786 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1787 Reorganize PBE internals to lookup from a static table using NIDs,
1788 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1789 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1790 PRF which will be automatically used with PBES2.
1793 *) Replace the algorithm specific calls to generate keys in "req" with the
1797 *) Update PKCS#7 enveloped data routines to use new API. This is now
1798 supported by any public key method supporting the encrypt operation. A
1799 ctrl is added to allow the public key algorithm to examine or modify
1800 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1804 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1805 a default digest type to use. In most cases this will be SHA1 but some
1806 algorithms (such as GOST) need to specify an alternative digest. The
1807 return value indicates how strong the prefernce is 1 means optional and
1808 2 is mandatory (that is it is the only supported type). Modify
1809 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1810 use the default md. Update openssl utilities to use the default digest
1811 type for signing if it is not explicitly indicated.
1814 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1815 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1816 signing method from the key type. This effectively removes the link
1817 between digests and public key types.
1820 *) Add an OID cross reference table and utility functions. Its purpose is to
1821 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1822 rsaEncryption. This will allow some of the algorithm specific hackery
1823 needed to use the correct OID to be removed.
1826 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1827 structures for PKCS7_sign(). They are now set up by the relevant public
1831 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1834 *) Add support for key derivation (agreement) in the API, DH method and
1838 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1839 public and private key formats. As a side effect these add additional
1840 command line functionality not previously available: DSA signatures can be
1841 generated and verified using pkeyutl and DH key support and generation in
1846 [Oliver Tappe <zooey@hirschkaefer.de>]
1848 *) New make target "install_html_docs" installs HTML renditions of the
1850 [Oliver Tappe <zooey@hirschkaefer.de>]
1852 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1853 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1854 support key and parameter generation and add initial key generation
1855 functionality for RSA.
1858 *) Add functions for main EVP_PKEY_method operations. The undocumented
1859 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1860 EVP_PKEY_{encrypt,decrypt}_old.
1863 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1864 key API, doesn't do much yet.
1867 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1868 public key algorithms. New option to openssl utility:
1869 "list-public-key-algorithms" to print out info.
1872 *) Implement the Supported Elliptic Curves Extension for
1873 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1876 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1877 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1880 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1881 utilities such as rsa, dsa, dsaparam etc except they process any key
1885 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1886 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1887 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1891 *) Initial support for pluggable public key ASN1.
1892 De-spaghettify the public key ASN1 handling. Move public and private
1893 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1894 algorithm specific handling to a single module within the relevant
1895 algorithm directory. Add functions to allow (near) opaque processing
1896 of public and private key structures.
1899 *) Implement the Supported Point Formats Extension for
1900 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1903 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1904 for the psk identity [hint] and the psk callback functions to the
1905 SSL_SESSION, SSL and SSL_CTX structure.
1908 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1912 SSL_CTX_use_psk_identity_hint
1913 SSL_get_psk_identity_hint
1914 SSL_get_psk_identity
1915 SSL_use_psk_identity_hint
1917 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1919 *) Add RFC 3161 compliant time stamp request creation, response generation
1920 and response verification functionality.
1921 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1923 *) Add initial support for TLS extensions, specifically for the server_name
1924 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1925 have new members for a host name. The SSL data structure has an
1926 additional member SSL_CTX *initial_ctx so that new sessions can be
1927 stored in that context to allow for session resumption, even after the
1928 SSL has been switched to a new SSL_CTX in reaction to a client's
1929 server_name extension.
1931 New functions (subject to change):
1933 SSL_get_servername()
1934 SSL_get_servername_type()
1937 New CTRL codes and macros (subject to change):
1939 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1940 - SSL_CTX_set_tlsext_servername_callback()
1941 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1942 - SSL_CTX_set_tlsext_servername_arg()
1943 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1945 openssl s_client has a new '-servername ...' option.
1947 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1948 '-key2 ...', '-servername_fatal' (subject to change). This allows
1949 testing the HostName extension for a specific single host name ('-cert'
1950 and '-key' remain fallbacks for handshakes without HostName
1951 negotiation). If the unrecogninzed_name alert has to be sent, this by
1952 default is a warning; it becomes fatal with the '-servername_fatal'
1955 [Peter Sylvester, Remy Allais, Christophe Renou]
1957 *) Whirlpool hash implementation is added.
1960 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1961 bn(64,32). Because of instruction set limitations it doesn't have
1962 any negative impact on performance. This was done mostly in order
1963 to make it possible to share assembler modules, such as bn_mul_mont
1964 implementations, between 32- and 64-bit builds without hassle.
1967 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1968 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1972 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1973 dedicated Montgomery multiplication procedure, is introduced.
1974 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1975 "64-bit" performance on certain 32-bit targets.
1978 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1979 in SSL structures. New SSL ctrl to set maximum send fragment size.
1980 Save memory by seeting the I/O buffer sizes dynamically instead of
1981 using the maximum available value.
1984 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1985 in addition to the text details.
1988 *) Very, very preliminary EXPERIMENTAL support for printing of general
1989 ASN1 structures. This currently produces rather ugly output and doesn't
1990 handle several customised structures at all.
1993 *) Integrated support for PVK file format and some related formats such
1994 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1995 these in the 'rsa' and 'dsa' utilities.
1998 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
2001 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
2002 place for the (very old) "NETSCAPE" format certificates which are now
2003 handled using new ASN1 code equivalents.
2006 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
2007 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
2008 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
2011 *) Modify CRL distribution points extension code to print out previously
2012 unsupported fields. Enhance extension setting code to allow setting of
2016 *) Add print and set support for Issuing Distribution Point CRL extension.
2019 *) Change 'Configure' script to enable Camellia by default.
2022 Changes between 0.9.8x and 0.9.8y [5 Feb 2013]
2024 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
2026 This addresses the flaw in CBC record processing discovered by
2027 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
2028 at: http://www.isg.rhul.ac.uk/tls/
2030 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2031 Security Group at Royal Holloway, University of London
2032 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
2033 Emilia Käsper for the initial patch.
2035 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
2037 *) Return an error when checking OCSP signatures when key is NULL.
2038 This fixes a DoS attack. (CVE-2013-0166)
2041 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
2042 the right response is stapled. Also change SSL_get_certificate()
2043 so it returns the certificate actually sent.
2044 See http://rt.openssl.org/Ticket/Display.html?id=2836.
2045 (This is a backport)
2046 [Rob Stradling <rob.stradling@comodo.com>]
2048 *) Fix possible deadlock when decoding public keys.
2051 Changes between 0.9.8w and 0.9.8x [10 May 2012]
2053 *) Sanity check record length before skipping explicit IV in DTLS
2056 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
2057 fuzzing as a service testing platform.
2061 *) Initialise tkeylen properly when encrypting CMS messages.
2062 Thanks to Solar Designer of Openwall for reporting this issue.
2065 Changes between 0.9.8v and 0.9.8w [23 Apr 2012]
2067 *) The fix for CVE-2012-2110 did not take into account that the
2068 'len' argument to BUF_MEM_grow and BUF_MEM_grow_clean is an
2069 int in OpenSSL 0.9.8, making it still vulnerable. Fix by
2070 rejecting negative len parameter. (CVE-2012-2131)
2071 [Tomas Hoger <thoger@redhat.com>]
2073 Changes between 0.9.8u and 0.9.8v [19 Apr 2012]
2075 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
2076 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
2077 in CRYPTO_realloc_clean.
2079 Thanks to Tavis Ormandy, Google Security Team, for discovering this
2080 issue and to Adam Langley <agl@chromium.org> for fixing it.
2082 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
2084 Changes between 0.9.8t and 0.9.8u [12 Mar 2012]
2086 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
2087 in CMS and PKCS7 code. When RSA decryption fails use a random key for
2088 content decryption and always return the same error. Note: this attack
2089 needs on average 2^20 messages so it only affects automated senders. The
2090 old behaviour can be reenabled in the CMS code by setting the
2091 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
2092 an MMA defence is not necessary.
2093 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
2094 this issue. (CVE-2012-0884)
2097 *) Fix CVE-2011-4619: make sure we really are receiving a
2098 client hello before rejecting multiple SGC restarts. Thanks to
2099 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
2102 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
2104 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
2105 Thanks to Antonio Martin, Enterprise Secure Access Research and
2106 Development, Cisco Systems, Inc. for discovering this bug and
2107 preparing a fix. (CVE-2012-0050)
2110 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
2112 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
2113 of the Vaudenay padding oracle attack on CBC mode encryption
2114 which enables an efficient plaintext recovery attack against
2115 the OpenSSL implementation of DTLS. Their attack exploits timing
2116 differences arising during decryption processing. A research
2117 paper describing this attack can be found at:
2118 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
2119 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2120 Security Group at Royal Holloway, University of London
2121 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
2122 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
2123 for preparing the fix. (CVE-2011-4108)
2124 [Robin Seggelmann, Michael Tuexen]
2126 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
2127 [Ben Laurie, Kasper <ekasper@google.com>]
2129 *) Clear bytes used for block padding of SSL 3.0 records.
2131 [Adam Langley (Google)]
2133 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
2134 Kadianakis <desnacked@gmail.com> for discovering this issue and
2135 Adam Langley for preparing the fix. (CVE-2011-4619)
2136 [Adam Langley (Google)]
2138 *) Prevent malformed RFC3779 data triggering an assertion failure.
2139 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
2140 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
2141 [Rob Austein <sra@hactrn.net>]
2143 *) Fix ssl_ciph.c set-up race.
2144 [Adam Langley (Google)]
2146 *) Fix spurious failures in ecdsatest.c.
2147 [Emilia Käsper (Google)]
2149 *) Fix the BIO_f_buffer() implementation (which was mixing different
2150 interpretations of the '..._len' fields).
2151 [Adam Langley (Google)]
2153 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
2154 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
2155 threads won't reuse the same blinding coefficients.
2157 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
2158 lock to call BN_BLINDING_invert_ex, and avoids one use of
2159 BN_BLINDING_update for each BN_BLINDING structure (previously,
2160 the last update always remained unused).
2161 [Emilia Käsper (Google)]
2163 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
2164 for multi-threaded use of ECDH.
2165 [Adam Langley (Google)]
2167 *) Fix x509_name_ex_d2i memory leak on bad inputs.
2170 *) Add protection against ECDSA timing attacks as mentioned in the paper
2171 by Billy Bob Brumley and Nicola Tuveri, see:
2173 http://eprint.iacr.org/2011/232.pdf
2175 [Billy Bob Brumley and Nicola Tuveri]
2177 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
2179 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
2180 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
2182 *) Fix bug in string printing code: if *any* escaping is enabled we must
2183 escape the escape character (backslash) or the resulting string is
2187 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
2189 *) Disable code workaround for ancient and obsolete Netscape browsers
2190 and servers: an attacker can use it in a ciphersuite downgrade attack.
2191 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
2194 *) Fixed J-PAKE implementation error, originally discovered by
2195 Sebastien Martini, further info and confirmation from Stefan
2196 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
2199 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
2201 *) Fix extension code to avoid race conditions which can result in a buffer
2202 overrun vulnerability: resumed sessions must not be modified as they can
2203 be shared by multiple threads. CVE-2010-3864
2206 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
2209 *) Don't reencode certificate when calculating signature: cache and use
2210 the original encoding instead. This makes signature verification of
2211 some broken encodings work correctly.
2214 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
2215 is also one of the inputs.
2216 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2218 *) Don't repeatedly append PBE algorithms to table if they already exist.
2219 Sort table on each new add. This effectively makes the table read only
2220 after all algorithms are added and subsequent calls to PKCS12_pbe_add
2224 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
2226 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
2229 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
2230 access or freeing data twice (CVE-2010-0742)
2231 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
2233 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
2234 common in certificates and some applications which only call
2235 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
2239 Reduce copying into .apps and .test in makevms.com
2240 Don't try to use blank CA certificate in CA.com
2241 Allow use of C files from original directories in maketests.com
2242 [Steven M. Schweda" <sms@antinode.info>]
2244 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
2246 *) When rejecting SSL/TLS records due to an incorrect version number, never
2247 update s->server with a new major version number. As of
2248 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
2249 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
2250 the previous behavior could result in a read attempt at NULL when
2251 receiving specific incorrect SSL/TLS records once record payload
2252 protection is active. (CVE-2010-0740)
2253 [Bodo Moeller, Adam Langley <agl@chromium.org>]
2255 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
2256 could be crashed if the relevant tables were not present (e.g. chrooted).
2257 [Tomas Hoger <thoger@redhat.com>]
2259 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
2261 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
2262 [Martin Olsson, Neel Mehta]
2264 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
2265 accommodate for stack sorting, always a write lock!).
2268 *) On some versions of WIN32 Heap32Next is very slow. This can cause
2269 excessive delays in the RAND_poll(): over a minute. As a workaround
2270 include a time check in the inner Heap32Next loop too.
2273 *) The code that handled flushing of data in SSL/TLS originally used the
2274 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
2275 the problem outlined in PR#1949. The fix suggested there however can
2276 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
2277 of Apache). So instead simplify the code to flush unconditionally.
2278 This should be fine since flushing with no data to flush is a no op.
2281 *) Handle TLS versions 2.0 and later properly and correctly use the
2282 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
2283 off ancient servers have a habit of sticking around for a while...
2286 *) Modify compression code so it frees up structures without using the
2287 ex_data callbacks. This works around a problem where some applications
2288 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
2289 restarting) then use compression (e.g. SSL with compression) later.
2290 This results in significant per-connection memory leaks and
2291 has caused some security issues including CVE-2008-1678 and
2295 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
2296 change when encrypting or decrypting.
2299 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
2300 connect and renegotiate with servers which do not support RI.
2301 Until RI is more widely deployed this option is enabled by default.
2304 *) Add "missing" ssl ctrls to clear options and mode.
2307 *) If client attempts to renegotiate and doesn't support RI respond with
2308 a no_renegotiation alert as required by RFC5746. Some renegotiating
2309 TLS clients will continue a connection gracefully when they receive
2310 the alert. Unfortunately OpenSSL mishandled this alert and would hang
2311 waiting for a server hello which it will never receive. Now we treat a
2312 received no_renegotiation alert as a fatal error. This is because
2313 applications requesting a renegotiation might well expect it to succeed
2314 and would have no code in place to handle the server denying it so the
2315 only safe thing to do is to terminate the connection.
2318 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
2319 peer supports secure renegotiation and 0 otherwise. Print out peer
2320 renegotiation support in s_client/s_server.
2323 *) Replace the highly broken and deprecated SPKAC certification method with
2324 the updated NID creation version. This should correctly handle UTF8.
2327 *) Implement RFC5746. Re-enable renegotiation but require the extension
2328 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
2329 turns out to be a bad idea. It has been replaced by
2330 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
2331 SSL_CTX_set_options(). This is really not recommended unless you
2332 know what you are doing.
2333 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
2335 *) Fixes to stateless session resumption handling. Use initial_ctx when
2336 issuing and attempting to decrypt tickets in case it has changed during
2337 servername handling. Use a non-zero length session ID when attempting
2338 stateless session resumption: this makes it possible to determine if
2339 a resumption has occurred immediately after receiving server hello
2340 (several places in OpenSSL subtly assume this) instead of later in
2344 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
2345 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
2346 fixes for a few places where the return code is not checked
2348 [Julia Lawall <julia@diku.dk>]
2350 *) Add --strict-warnings option to Configure script to include devteam
2351 warnings in other configurations.
2354 *) Add support for --libdir option and LIBDIR variable in makefiles. This
2355 makes it possible to install openssl libraries in locations which
2356 have names other than "lib", for example "/usr/lib64" which some
2358 [Steve Henson, based on patch from Jeremy Utley]
2360 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
2361 X690 8.9.12 and can produce some misleading textual output of OIDs.
2362 [Steve Henson, reported by Dan Kaminsky]
2364 *) Delete MD2 from algorithm tables. This follows the recommendation in
2365 several standards that it is not used in new applications due to
2366 several cryptographic weaknesses. For binary compatibility reasons
2367 the MD2 API is still compiled in by default.
2370 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
2374 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
2375 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
2377 [Guenter <lists@gknw.net>]
2379 *) Fix the server certificate chain building code to use X509_verify_cert(),
2380 it used to have an ad-hoc builder which was unable to cope with anything
2381 other than a simple chain.
2382 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
2384 *) Don't check self signed certificate signatures in X509_verify_cert()
2385 by default (a flag can override this): it just wastes time without
2386 adding any security. As a useful side effect self signed root CAs
2387 with non-FIPS digests are now usable in FIPS mode.
2390 *) In dtls1_process_out_of_seq_message() the check if the current message
2391 is already buffered was missing. For every new message was memory
2392 allocated, allowing an attacker to perform an denial of service attack
2393 with sending out of seq handshake messages until there is no memory
2394 left. Additionally every future messege was buffered, even if the
2395 sequence number made no sense and would be part of another handshake.
2396 So only messages with sequence numbers less than 10 in advance will be
2397 buffered. (CVE-2009-1378)
2398 [Robin Seggelmann, discovered by Daniel Mentz]
2400 *) Records are buffered if they arrive with a future epoch to be
2401 processed after finishing the corresponding handshake. There is
2402 currently no limitation to this buffer allowing an attacker to perform
2403 a DOS attack with sending records with future epochs until there is no
2404 memory left. This patch adds the pqueue_size() function to detemine
2405 the size of a buffer and limits the record buffer to 100 entries.
2407 [Robin Seggelmann, discovered by Daniel Mentz]
2409 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
2410 parent structure is freed. (CVE-2009-1379)
2413 *) Handle non-blocking I/O properly in SSL_shutdown() call.
2414 [Darryl Miles <darryl-mailinglists@netbauds.net>]
2417 [Ilya O. <vrghost@gmail.com>]
2419 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
2421 *) Disable renegotiation completely - this fixes a severe security
2422 problem (CVE-2009-3555) at the cost of breaking all
2423 renegotiation. Renegotiation can be re-enabled by setting
2424 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
2425 run-time. This is really not recommended unless you know what
2429 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
2431 *) Don't set val to NULL when freeing up structures, it is freed up by
2432 underlying code. If sizeof(void *) > sizeof(long) this can result in
2433 zeroing past the valid field. (CVE-2009-0789)
2434 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
2436 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
2437 checked correctly. This would allow some invalid signed attributes to
2438 appear to verify correctly. (CVE-2009-0591)
2439 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2441 *) Reject UniversalString and BMPString types with invalid lengths. This
2442 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
2443 a legal length. (CVE-2009-0590)
2446 *) Set S/MIME signing as the default purpose rather than setting it
2447 unconditionally. This allows applications to override it at the store
2451 *) Permit restricted recursion of ASN1 strings. This is needed in practice
2452 to handle some structures.
2455 *) Improve efficiency of mem_gets: don't search whole buffer each time
2457 [Jeremy Shapiro <jnshapir@us.ibm.com>]
2459 *) New -hex option for openssl rand.
2462 *) Print out UTF8String and NumericString when parsing ASN1.
2465 *) Support NumericString type for name components.
2468 *) Allow CC in the environment to override the automatically chosen
2469 compiler. Note that nothing is done to ensure flags work with the
2473 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
2475 *) Properly check EVP_VerifyFinal() and similar return values
2477 [Ben Laurie, Bodo Moeller, Google Security Team]
2479 *) Enable TLS extensions by default.
2482 *) Allow the CHIL engine to be loaded, whether the application is
2483 multithreaded or not. (This does not release the developer from the
2484 obligation to set up the dynamic locking callbacks.)
2485 [Sander Temme <sander@temme.net>]
2487 *) Use correct exit code if there is an error in dgst command.
2488 [Steve Henson; problem pointed out by Roland Dirlewanger]
2490 *) Tweak Configure so that you need to say "experimental-jpake" to enable
2491 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
2494 *) Add experimental JPAKE support, including demo authentication in
2495 s_client and s_server.
2498 *) Set the comparison function in v3_addr_canonize().
2499 [Rob Austein <sra@hactrn.net>]
2501 *) Add support for XMPP STARTTLS in s_client.
2502 [Philip Paeps <philip@freebsd.org>]
2504 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
2505 to ensure that even with this option, only ciphersuites in the
2506 server's preference list will be accepted. (Note that the option
2507 applies only when resuming a session, so the earlier behavior was
2508 just about the algorithm choice for symmetric cryptography.)
2511 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
2513 *) Fix NULL pointer dereference if a DTLS server received
2514 ChangeCipherSpec as first record (CVE-2009-1386).
2517 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
2518 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
2521 *) The fix in 0.9.8c that supposedly got rid of unsafe
2522 double-checked locking was incomplete for RSA blinding,
2523 addressing just one layer of what turns out to have been
2524 doubly unsafe triple-checked locking.
2526 So now fix this for real by retiring the MONT_HELPER macro
2527 in crypto/rsa/rsa_eay.c.
2529 [Bodo Moeller; problem pointed out by Marius Schilder]
2531 *) Various precautionary measures:
2533 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
2535 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
2536 (NB: This would require knowledge of the secret session ticket key
2537 to exploit, in which case you'd be SOL either way.)
2539 - Change bn_nist.c so that it will properly handle input BIGNUMs
2540 outside the expected range.
2542 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
2545 [Neel Mehta, Bodo Moeller]
2547 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
2548 the load fails. Useful for distros.
2549 [Ben Laurie and the FreeBSD team]
2551 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
2554 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
2557 *) Expand ENGINE to support engine supplied SSL client certificate functions.
2559 This work was sponsored by Logica.
2562 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
2563 keystores. Support for SSL/TLS client authentication too.
2564 Not compiled unless enable-capieng specified to Configure.
2566 This work was sponsored by Logica.
2569 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
2570 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
2571 attribute creation routines such as certifcate requests and PKCS#12
2575 Changes between 0.9.8g and 0.9.8h [28 May 2008]
2577 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
2578 handshake which could lead to a cilent crash as found using the
2579 Codenomicon TLS test suite (CVE-2008-1672)
2580 [Steve Henson, Mark Cox]
2582 *) Fix double free in TLS server name extensions which could lead to
2583 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2586 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2588 Clear the error queue to ensure that error entries left from
2589 older function calls do not interfere with the correct operation.
2590 [Lutz Jaenicke, Erik de Castro Lopo]
2592 *) Remove root CA certificates of commercial CAs:
2594 The OpenSSL project does not recommend any specific CA and does not
2595 have any policy with respect to including or excluding any CA.
2596 Therefore it does not make any sense to ship an arbitrary selection
2597 of root CA certificates with the OpenSSL software.
2600 *) RSA OAEP patches to fix two separate invalid memory reads.
2601 The first one involves inputs when 'lzero' is greater than
2602 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2603 before the beginning of from). The second one involves inputs where
2604 the 'db' section contains nothing but zeroes (there is a one-byte
2605 invalid read after the end of 'db').
2606 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2608 *) Partial backport from 0.9.9-dev:
2610 Introduce bn_mul_mont (dedicated Montgomery multiplication
2611 procedure) as a candidate for BIGNUM assembler implementation.
2612 While 0.9.9-dev uses assembler for various architectures, only
2613 x86_64 is available by default here in the 0.9.8 branch, and
2614 32-bit x86 is available through a compile-time setting.
2616 To try the 32-bit x86 assembler implementation, use Configure
2617 option "enable-montasm" (which exists only for this backport).
2619 As "enable-montasm" for 32-bit x86 disclaims code stability
2620 anyway, in this constellation we activate additional code
2621 backported from 0.9.9-dev for further performance improvements,
2622 namely BN_from_montgomery_word. (To enable this otherwise,
2623 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2625 [Andy Polyakov (backport partially by Bodo Moeller)]
2627 *) Add TLS session ticket callback. This allows an application to set
2628 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2629 values. This is useful for key rollover for example where several key
2630 sets may exist with different names.
2633 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2634 This was broken until now in 0.9.8 releases, such that the only way
2635 a registered ENGINE could be used (assuming it initialises
2636 successfully on the host) was to explicitly set it as the default
2637 for the relevant algorithms. This is in contradiction with 0.9.7
2638 behaviour and the documentation. With this fix, when an ENGINE is
2639 registered into a given algorithm's table of implementations, the
2640 'uptodate' flag is reset so that auto-discovery will be used next
2641 time a new context for that algorithm attempts to select an
2643 [Ian Lister (tweaked by Geoff Thorpe)]
2645 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2646 implemention in the following ways:
2648 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2651 Lack of BER streaming support means one pass streaming processing is
2652 only supported if data is detached: setting the streaming flag is
2653 ignored for embedded content.
2655 CMS support is disabled by default and must be explicitly enabled
2656 with the enable-cms configuration option.
2659 *) Update the GMP engine glue to do direct copies between BIGNUM and
2660 mpz_t when openssl and GMP use the same limb size. Otherwise the
2661 existing "conversion via a text string export" trick is still used.
2662 [Paul Sheer <paulsheer@gmail.com>]
2664 *) Zlib compression BIO. This is a filter BIO which compressed and
2665 uncompresses any data passed through it.
2668 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2669 RFC3394 compatible AES key wrapping.
2672 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2673 sets string data without copying. X509_ALGOR_set0() and
2674 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2675 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2676 from an X509_ATTRIBUTE structure optionally checking it occurs only
2677 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2681 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2682 to get the expected BN_FLG_CONSTTIME behavior.
2683 [Bodo Moeller (Google)]
2687 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2688 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2689 - added some more tests to do_tests.pl
2690 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2691 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2692 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2693 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2694 - various changes to netware.pl to enable gcc-cross builds on Win32
2696 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2697 - various changes to fix missing prototype warnings
2698 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2699 - added AES, WHIRLPOOL and CPUID assembler code to build files
2700 - added missing AES assembler make rules to mk1mf.pl
2701 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2702 [Guenter Knauf <eflash@gmx.net>]
2704 *) Implement certificate status request TLS extension defined in RFC3546.
2705 A client can set the appropriate parameters and receive the encoded
2706 OCSP response via a callback. A server can query the supplied parameters
2707 and set the encoded OCSP response in the callback. Add simplified examples
2708 to s_client and s_server.
2711 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2713 *) Fix various bugs:
2714 + Binary incompatibility of ssl_ctx_st structure
2715 + DTLS interoperation with non-compliant servers
2716 + Don't call get_session_cb() without proposed session
2717 + Fix ia64 assembler code
2718 [Andy Polyakov, Steve Henson]
2720 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2722 *) DTLS Handshake overhaul. There were longstanding issues with
2723 OpenSSL DTLS implementation, which were making it impossible for
2724 RFC 4347 compliant client to communicate with OpenSSL server.
2725 Unfortunately just fixing these incompatibilities would "cut off"
2726 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2727 server keeps tolerating non RFC compliant syntax. The opposite is
2728 not true, 0.9.8f client can not communicate with earlier server.
2729 This update even addresses CVE-2007-4995.
2732 *) Changes to avoid need for function casts in OpenSSL: some compilers
2733 (gcc 4.2 and later) reject their use.
2734 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2737 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2738 RFC4507bis. The encrypted ticket format is an encrypted encoded
2739 SSL_SESSION structure, that way new session features are automatically
2742 If a client application caches session in an SSL_SESSION structure
2743 support is transparent because tickets are now stored in the encoded
2746 The SSL_CTX structure automatically generates keys for ticket
2747 protection in servers so again support should be possible
2748 with no application modification.
2750 If a client or server wishes to disable RFC4507 support then the option
2751 SSL_OP_NO_TICKET can be set.
2753 Add a TLS extension debugging callback to allow the contents of any client
2754 or server extensions to be examined.
2756 This work was sponsored by Google.
2759 *) Add initial support for TLS extensions, specifically for the server_name
2760 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2761 have new members for a host name. The SSL data structure has an
2762 additional member SSL_CTX *initial_ctx so that new sessions can be
2763 stored in that context to allow for session resumption, even after the
2764 SSL has been switched to a new SSL_CTX in reaction to a client's
2765 server_name extension.
2767 New functions (subject to change):
2769 SSL_get_servername()
2770 SSL_get_servername_type()
2773 New CTRL codes and macros (subject to change):
2775 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2776 - SSL_CTX_set_tlsext_servername_callback()
2777 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2778 - SSL_CTX_set_tlsext_servername_arg()
2779 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2781 openssl s_client has a new '-servername ...' option.
2783 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2784 '-key2 ...', '-servername_fatal' (subject to change). This allows
2785 testing the HostName extension for a specific single host name ('-cert'
2786 and '-key' remain fallbacks for handshakes without HostName
2787 negotiation). If the unrecogninzed_name alert has to be sent, this by
2788 default is a warning; it becomes fatal with the '-servername_fatal'
2791 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2793 *) Add AES and SSE2 assembly language support to VC++ build.
2796 *) Mitigate attack on final subtraction in Montgomery reduction.
2799 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2800 (which previously caused an internal error).
2803 *) Squeeze another 10% out of IGE mode when in != out.
2806 *) AES IGE mode speedup.
2807 [Dean Gaudet (Google)]
2809 *) Add the Korean symmetric 128-bit cipher SEED (see
2810 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2811 add SEED ciphersuites from RFC 4162:
2813 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2814 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2815 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2816 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2818 To minimize changes between patchlevels in the OpenSSL 0.9.8
2819 series, SEED remains excluded from compilation unless OpenSSL
2820 is configured with 'enable-seed'.
2821 [KISA, Bodo Moeller]
2823 *) Mitigate branch prediction attacks, which can be practical if a
2824 single processor is shared, allowing a spy process to extract
2825 information. For detailed background information, see
2826 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2827 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2828 and Necessary Software Countermeasures"). The core of the change
2829 are new versions BN_div_no_branch() and
2830 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2831 respectively, which are slower, but avoid the security-relevant
2832 conditional branches. These are automatically called by BN_div()
2833 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2834 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2835 remove a conditional branch.
2837 BN_FLG_CONSTTIME is the new name for the previous
2838 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2839 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2840 in the exponent causes BN_mod_exp_mont() to use the alternative
2841 implementation in BN_mod_exp_mont_consttime().) The old name
2842 remains as a deprecated alias.
2844 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2845 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2846 constant-time implementations for more than just exponentiation.
2847 Here too the old name is kept as a deprecated alias.
2849 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2850 the BN_BLINDING structure gets an independent copy of the
2851 modulus. This means that the previous "BIGNUM *m" argument to
2852 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2853 essentially becomes "const BIGNUM *m", although we can't actually
2854 change this in the header file before 0.9.9. It allows
2855 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2856 enable BN_FLG_CONSTTIME.
2858 [Matthew D Wood (Intel Corp)]
2860 *) In the SSL/TLS server implementation, be strict about session ID
2861 context matching (which matters if an application uses a single
2862 external cache for different purposes). Previously,
2863 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2864 set. This did ensure strict client verification, but meant that,
2865 with applications using a single external cache for quite
2866 different requirements, clients could circumvent ciphersuite
2867 restrictions for a given session ID context by starting a session
2868 in a different context.
2871 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2872 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2873 authentication-only ciphersuites.
2876 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2877 not complete and could lead to a possible single byte overflow
2878 (CVE-2007-5135) [Ben Laurie]
2880 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2882 *) Since AES128 and AES256 (and similarly Camellia128 and
2883 Camellia256) share a single mask bit in the logic of
2884 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2885 kludge to work properly if AES128 is available and AES256 isn't
2886 (or if Camellia128 is available and Camellia256 isn't).
2889 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2890 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2891 When a point or a seed is encoded in a BIT STRING, we need to
2892 prevent the removal of trailing zero bits to get the proper DER
2893 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2894 of a NamedBitList, for which trailing 0 bits need to be removed.)
2897 *) Have SSL/TLS server implementation tolerate "mismatched" record
2898 protocol version while receiving ClientHello even if the
2899 ClientHello is fragmented. (The server can't insist on the
2900 particular protocol version it has chosen before the ServerHello
2901 message has informed the client about his choice.)
2904 *) Add RFC 3779 support.
2905 [Rob Austein for ARIN, Ben Laurie]
2907 *) Load error codes if they are not already present instead of using a
2908 static variable. This allows them to be cleanly unloaded and reloaded.
2909 Improve header file function name parsing.
2912 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2913 or CAPABILITY handshake as required by RFCs.
2916 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2918 *) Introduce limits to prevent malicious keys being able to
2919 cause a denial of service. (CVE-2006-2940)
2920 [Steve Henson, Bodo Moeller]
2922 *) Fix ASN.1 parsing of certain invalid structures that can result
2923 in a denial of service. (CVE-2006-2937) [Steve Henson]
2925 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2926 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2928 *) Fix SSL client code which could crash if connecting to a
2929 malicious SSLv2 server. (CVE-2006-4343)
2930 [Tavis Ormandy and Will Drewry, Google Security Team]
2932 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2933 match only those. Before that, "AES256-SHA" would be interpreted
2934 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2935 the same strength classification in 0.9.7h) as we currently only
2936 have a single AES bit in the ciphersuite description bitmap.
2937 That change, however, also applied to ciphersuite strings such as
2938 "RC4-MD5" that intentionally matched multiple ciphersuites --
2939 namely, SSL 2.0 ciphersuites in addition to the more common ones
2940 from SSL 3.0/TLS 1.0.
2942 So we change the selection algorithm again: Naming an explicit
2943 ciphersuite selects this one ciphersuite, and any other similar
2944 ciphersuite (same bitmap) from *other* protocol versions.
2945 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2946 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2948 Since SSL 2.0 does not have any ciphersuites for which the
2949 128/256 bit distinction would be relevant, this works for now.
2950 The proper fix will be to use different bits for AES128 and
2951 AES256, which would have avoided the problems from the beginning;
2952 however, bits are scarce, so we can only do this in a new release
2953 (not just a patchlevel) when we can change the SSL_CIPHER
2954 definition to split the single 'unsigned long mask' bitmap into
2955 multiple values to extend the available space.
2959 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2961 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2962 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2964 *) Add AES IGE and biIGE modes.
2967 *) Change the Unix randomness entropy gathering to use poll() when
2968 possible instead of select(), since the latter has some
2969 undesirable limitations.
2970 [Darryl Miles via Richard Levitte and Bodo Moeller]
2972 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2973 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2974 cannot be implicitly activated as part of, e.g., the "AES" alias.
2975 However, please upgrade to OpenSSL 0.9.9[-dev] for
2976 non-experimental use of the ECC ciphersuites to get TLS extension
2977 support, which is required for curve and point format negotiation
2978 to avoid potential handshake problems.
2981 *) Disable rogue ciphersuites:
2983 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2984 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2985 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2987 The latter two were purportedly from
2988 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2991 Also deactivate the remaining ciphersuites from
2992 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2993 unofficial, and the ID has long expired.
2996 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2997 dual-core machines) and other potential thread-safety issues.
3000 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
3001 versions), which is now available for royalty-free use
3002 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
3003 Also, add Camellia TLS ciphersuites from RFC 4132.
3005 To minimize changes between patchlevels in the OpenSSL 0.9.8
3006 series, Camellia remains excluded from compilation unless OpenSSL
3007 is configured with 'enable-camellia'.
3010 *) Disable the padding bug check when compression is in use. The padding
3011 bug check assumes the first packet is of even length, this is not
3012 necessarily true if compresssion is enabled and can result in false
3013 positives causing handshake failure. The actual bug test is ancient
3014 code so it is hoped that implementations will either have fixed it by
3015 now or any which still have the bug do not support compression.
3018 Changes between 0.9.8a and 0.9.8b [04 May 2006]
3020 *) When applying a cipher rule check to see if string match is an explicit
3021 cipher suite and only match that one cipher suite if it is.
3024 *) Link in manifests for VC++ if needed.
3025 [Austin Ziegler <halostatue@gmail.com>]
3027 *) Update support for ECC-based TLS ciphersuites according to
3028 draft-ietf-tls-ecc-12.txt with proposed changes (but without
3029 TLS extensions, which are supported starting with the 0.9.9
3030 branch, not in the OpenSSL 0.9.8 branch).
3033 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
3034 opaque EVP_CIPHER_CTX handling.
3037 *) Fixes and enhancements to zlib compression code. We now only use
3038 "zlib1.dll" and use the default __cdecl calling convention on Win32
3039 to conform with the standards mentioned here:
3040 http://www.zlib.net/DLL_FAQ.txt
3041 Static zlib linking now works on Windows and the new --with-zlib-include
3042 --with-zlib-lib options to Configure can be used to supply the location
3043 of the headers and library. Gracefully handle case where zlib library
3047 *) Several fixes and enhancements to the OID generation code. The old code
3048 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
3049 handle numbers larger than ULONG_MAX, truncated printing and had a
3050 non standard OBJ_obj2txt() behaviour.
3053 *) Add support for building of engines under engine/ as shared libraries
3054 under VC++ build system.
3057 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
3058 Hopefully, we will not see any false combination of paths any more.
3061 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
3063 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3064 (part of SSL_OP_ALL). This option used to disable the
3065 countermeasure against man-in-the-middle protocol-version
3066 rollback in the SSL 2.0 server implementation, which is a bad
3067 idea. (CVE-2005-2969)
3069 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3070 for Information Security, National Institute of Advanced Industrial
3071 Science and Technology [AIST], Japan)]
3073 *) Add two function to clear and return the verify parameter flags.
3076 *) Keep cipherlists sorted in the source instead of sorting them at
3077 runtime, thus removing the need for a lock.
3080 *) Avoid some small subgroup attacks in Diffie-Hellman.
3081 [Nick Mathewson and Ben Laurie]
3083 *) Add functions for well-known primes.
3086 *) Extended Windows CE support.
3087 [Satoshi Nakamura and Andy Polyakov]
3089 *) Initialize SSL_METHOD structures at compile time instead of during
3090 runtime, thus removing the need for a lock.
3093 *) Make PKCS7_decrypt() work even if no certificate is supplied by
3094 attempting to decrypt each encrypted key in turn. Add support to
3098 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
3100 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
3103 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
3106 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
3107 key into the same file any more.
3110 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
3113 *) Add -utf8 command line and config file option to 'ca'.
3114 [Stefan <stf@udoma.org]
3116 *) Removed the macro des_crypt(), as it seems to conflict with some
3117 libraries. Use DES_crypt().
3120 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
3121 involves renaming the source and generated shared-libs for
3122 both. The engines will accept the corrected or legacy ids
3123 ('ncipher' and '4758_cca' respectively) when binding. NB,
3124 this only applies when building 'shared'.
3125 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
3127 *) Add attribute functions to EVP_PKEY structure. Modify
3128 PKCS12_create() to recognize a CSP name attribute and
3129 use it. Make -CSP option work again in pkcs12 utility.
3132 *) Add new functionality to the bn blinding code:
3133 - automatic re-creation of the BN_BLINDING parameters after
3134 a fixed number of uses (currently 32)
3135 - add new function for parameter creation
3136 - introduce flags to control the update behaviour of the
3137 BN_BLINDING parameters
3138 - hide BN_BLINDING structure
3139 Add a second BN_BLINDING slot to the RSA structure to improve
3140 performance when a single RSA object is shared among several
3144 *) Add support for DTLS.
3145 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
3147 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
3148 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
3151 *) Remove buggy and incompletet DH cert support from
3152 ssl/ssl_rsa.c and ssl/s3_both.c
3155 *) Use SHA-1 instead of MD5 as the default digest algorithm for
3156 the apps/openssl applications.
3159 *) Compile clean with "-Wall -Wmissing-prototypes
3160 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
3161 DEBUG_SAFESTACK must also be set.
3164 *) Change ./Configure so that certain algorithms can be disabled by default.
3165 The new counterpiece to "no-xxx" is "enable-xxx".
3167 The patented RC5 and MDC2 algorithms will now be disabled unless
3168 "enable-rc5" and "enable-mdc2", respectively, are specified.
3170 (IDEA remains enabled despite being patented. This is because IDEA
3171 is frequently required for interoperability, and there is no license
3172 fee for non-commercial use. As before, "no-idea" can be used to
3173 avoid this algorithm.)
3177 *) Add processing of proxy certificates (see RFC 3820). This work was
3178 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
3179 EGEE (Enabling Grids for E-science in Europe).
3182 *) RC4 performance overhaul on modern architectures/implementations, such
3183 as Intel P4, IA-64 and AMD64.
3186 *) New utility extract-section.pl. This can be used specify an alternative
3187 section number in a pod file instead of having to treat each file as
3188 a separate case in Makefile. This can be done by adding two lines to the
3191 =for comment openssl_section:XXX
3193 The blank line is mandatory.
3197 *) New arguments -certform, -keyform and -pass for s_client and s_server
3198 to allow alternative format key and certificate files and passphrase
3202 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
3203 update associated structures and add various utility functions.
3205 Add new policy related verify parameters, include policy checking in
3206 standard verify code. Enhance 'smime' application with extra parameters
3207 to support policy checking and print out.
3210 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
3211 Nehemiah processors. These extensions support AES encryption in hardware
3212 as well as RNG (though RNG support is currently disabled).
3213 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
3215 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
3218 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
3219 [Andy Polyakov and a number of other people]
3221 *) Improved PowerPC platform support. Most notably BIGNUM assembler
3222 implementation contributed by IBM.
3223 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
3225 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
3226 exponent rather than 'unsigned long'. There is a corresponding change to
3227 the new 'rsa_keygen' element of the RSA_METHOD structure.
3228 [Jelte Jansen, Geoff Thorpe]
3230 *) Functionality for creating the initial serial number file is now
3231 moved from CA.pl to the 'ca' utility with a new option -create_serial.
3233 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
3234 number file to 1, which is bound to cause problems. To avoid
3235 the problems while respecting compatibility between different 0.9.7
3236 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
3237 CA.pl for serial number initialization. With the new release 0.9.8,
3238 we can fix the problem directly in the 'ca' utility.)
3241 *) Reduced header interdepencies by declaring more opaque objects in
3242 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
3243 give fewer recursive includes, which could break lazy source code - so
3244 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
3245 developers should define this symbol when building and using openssl to
3246 ensure they track the recommended behaviour, interfaces, [etc], but
3247 backwards-compatible behaviour prevails when this isn't defined.
3250 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
3253 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
3254 This will generate a random key of the appropriate length based on the
3255 cipher context. The EVP_CIPHER can provide its own random key generation
3256 routine to support keys of a specific form. This is used in the des and
3257 3des routines to generate a key of the correct parity. Update S/MIME
3258 code to use new functions and hence generate correct parity DES keys.
3259 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
3260 valid (weak or incorrect parity).
3263 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
3264 as looking them up. This is useful when the verified structure may contain
3265 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
3266 present unless the new PKCS7_NO_CRL flag is asserted.
3269 *) Extend ASN1 oid configuration module. It now additionally accepts the
3272 shortName = some long name, 1.2.3.4
3275 *) Reimplemented the BN_CTX implementation. There is now no more static
3276 limitation on the number of variables it can handle nor the depth of the
3277 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
3278 information can now expand as required, and rather than having a single
3279 static array of bignums, BN_CTX now uses a linked-list of such arrays
3280 allowing it to expand on demand whilst maintaining the usefulness of
3281 BN_CTX's "bundling".
3284 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
3285 to allow all RSA operations to function using a single BN_CTX.
3288 *) Preliminary support for certificate policy evaluation and checking. This
3289 is initially intended to pass the tests outlined in "Conformance Testing
3290 of Relying Party Client Certificate Path Processing Logic" v1.07.
3293 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
3294 remained unused and not that useful. A variety of other little bignum
3295 tweaks and fixes have also been made continuing on from the audit (see
3299 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
3300 associated ASN1, EVP and SSL functions and old ASN1 macros.
3303 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
3304 and this should never fail. So the return value from the use of
3305 BN_set_word() (which can fail due to needless expansion) is now deprecated;
3306 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
3309 *) BN_CTX_get() should return zero-valued bignums, providing the same
3310 initialised value as BN_new().
3311 [Geoff Thorpe, suggested by Ulf Möller]
3313 *) Support for inhibitAnyPolicy certificate extension.
3316 *) An audit of the BIGNUM code is underway, for which debugging code is
3317 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
3318 is considered valid when processing BIGNUMs, and causes execution to
3319 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
3320 further steps are taken to deliberately pollute unused data in BIGNUM
3321 structures to try and expose faulty code further on. For now, openssl will
3322 (in its default mode of operation) continue to tolerate the inconsistent
3323 forms that it has tolerated in the past, but authors and packagers should
3324 consider trying openssl and their own applications when compiled with
3325 these debugging symbols defined. It will help highlight potential bugs in
3326 their own code, and will improve the test coverage for OpenSSL itself. At
3327 some point, these tighter rules will become openssl's default to improve
3328 maintainability, though the assert()s and other overheads will remain only
3329 in debugging configurations. See bn.h for more details.
3330 [Geoff Thorpe, Nils Larsch, Ulf Möller]
3332 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
3333 that can only be obtained through BN_CTX_new() (which implicitly
3334 initialises it). The presence of this function only made it possible
3335 to overwrite an existing structure (and cause memory leaks).
3338 *) Because of the callback-based approach for implementing LHASH as a
3339 template type, lh_insert() adds opaque objects to hash-tables and
3340 lh_doall() or lh_doall_arg() are typically used with a destructor callback
3341 to clean up those corresponding objects before destroying the hash table
3342 (and losing the object pointers). So some over-zealous constifications in
3343 LHASH have been relaxed so that lh_insert() does not take (nor store) the
3344 objects as "const" and the lh_doall[_arg] callback wrappers are not
3345 prototyped to have "const" restrictions on the object pointers they are
3346 given (and so aren't required to cast them away any more).
3349 *) The tmdiff.h API was so ugly and minimal that our own timing utility
3350 (speed) prefers to use its own implementation. The two implementations
3351 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
3352 its object type properly exposed (MS_TM) instead of casting to/from "char
3353 *". This may still change yet if someone realises MS_TM and "ms_time_***"
3354 aren't necessarily the greatest nomenclatures - but this is what was used
3355 internally to the implementation so I've used that for now.
3358 *) Ensure that deprecated functions do not get compiled when
3359 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
3360 the self-tests were still using deprecated key-generation functions so
3361 these have been updated also.
3364 *) Reorganise PKCS#7 code to separate the digest location functionality
3365 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
3366 New function PKCS7_set_digest() to set the digest type for PKCS#7
3367 digestedData type. Add additional code to correctly generate the
3368 digestedData type and add support for this type in PKCS7 initialization
3372 *) New function PKCS7_set0_type_other() this initializes a PKCS7
3373 structure of type "other".
3376 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
3377 sure the loop does correctly stop and breaking ("division by zero")
3378 modulus operations are not performed. The (pre-generated) prime
3379 table crypto/bn/bn_prime.h was already correct, but it could not be
3380 re-generated on some platforms because of the "division by zero"
3381 situation in the script.
3382 [Ralf S. Engelschall]
3384 *) Update support for ECC-based TLS ciphersuites according to
3385 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
3386 SHA-1 now is only used for "small" curves (where the
3387 representation of a field element takes up to 24 bytes); for
3388 larger curves, the field element resulting from ECDH is directly
3389 used as premaster secret.
3390 [Douglas Stebila (Sun Microsystems Laboratories)]
3392 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
3393 curve secp160r1 to the tests.
3394 [Douglas Stebila (Sun Microsystems Laboratories)]
3396 *) Add the possibility to load symbols globally with DSO.
3397 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
3399 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
3400 control of the error stack.
3403 *) Add support for STORE in ENGINE.
3406 *) Add the STORE type. The intention is to provide a common interface
3407 to certificate and key stores, be they simple file-based stores, or
3408 HSM-type store, or LDAP stores, or...
3409 NOTE: The code is currently UNTESTED and isn't really used anywhere.
3412 *) Add a generic structure called OPENSSL_ITEM. This can be used to
3413 pass a list of arguments to any function as well as provide a way
3414 for a function to pass data back to the caller.
3417 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
3418 works like BUF_strdup() but can be used to duplicate a portion of
3419 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
3423 *) Add the function sk_find_ex() which works like sk_find(), but will
3424 return an index to an element even if an exact match couldn't be
3425 found. The index is guaranteed to point at the element where the
3426 searched-for key would be inserted to preserve sorting order.
3429 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
3430 takes an extra flags argument for optional functionality. Currently,
3431 the following flags are defined:
3433 OBJ_BSEARCH_VALUE_ON_NOMATCH
3434 This one gets OBJ_bsearch_ex() to return a pointer to the first
3435 element where the comparing function returns a negative or zero
3438 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
3439 This one gets OBJ_bsearch_ex() to return a pointer to the first
3440 element where the comparing function returns zero. This is useful
3441 if there are more than one element where the comparing function
3445 *) Make it possible to create self-signed certificates with 'openssl ca'
3446 in such a way that the self-signed certificate becomes part of the
3447 CA database and uses the same mechanisms for serial number generation
3448 as all other certificate signing. The new flag '-selfsign' enables
3449 this functionality. Adapt CA.sh and CA.pl.in.
3452 *) Add functionality to check the public key of a certificate request
3453 against a given private. This is useful to check that a certificate
3454 request can be signed by that key (self-signing).
3457 *) Make it possible to have multiple active certificates with the same
3458 subject in the CA index file. This is done only if the keyword
3459 'unique_subject' is set to 'no' in the main CA section (default
3460 if 'CA_default') of the configuration file. The value is saved
3461 with the database itself in a separate index attribute file,
3462 named like the index file with '.attr' appended to the name.
3465 *) Generate muti valued AVAs using '+' notation in config files for
3469 *) Support for nameConstraints certificate extension.
3472 *) Support for policyConstraints certificate extension.
3475 *) Support for policyMappings certificate extension.
3478 *) Make sure the default DSA_METHOD implementation only uses its
3479 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
3480 and change its own handlers to be NULL so as to remove unnecessary
3481 indirection. This lets alternative implementations fallback to the
3482 default implementation more easily.
3485 *) Support for directoryName in GeneralName related extensions
3489 *) Make it possible to link applications using Makefile.shared.
3490 Make that possible even when linking against static libraries!
3493 *) Support for single pass processing for S/MIME signing. This now
3494 means that S/MIME signing can be done from a pipe, in addition
3495 cleartext signing (multipart/signed type) is effectively streaming
3496 and the signed data does not need to be all held in memory.
3498 This is done with a new flag PKCS7_STREAM. When this flag is set
3499 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
3500 is done after the data is output (and digests calculated) in
3501 SMIME_write_PKCS7().
3504 *) Add full support for -rpath/-R, both in shared libraries and
3505 applications, at least on the platforms where it's known how
3509 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
3510 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
3511 will now compute a table of multiples of the generator that
3512 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
3513 faster (notably in the case of a single point multiplication,
3514 scalar * generator).
3515 [Nils Larsch, Bodo Moeller]
3517 *) IPv6 support for certificate extensions. The various extensions
3518 which use the IP:a.b.c.d can now take IPv6 addresses using the
3519 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
3523 *) Added an ENGINE that implements RSA by performing private key
3524 exponentiations with the GMP library. The conversions to and from
3525 GMP's mpz_t format aren't optimised nor are any montgomery forms
3526 cached, and on x86 it appears OpenSSL's own performance has caught up.
3527 However there are likely to be other architectures where GMP could
3528 provide a boost. This ENGINE is not built in by default, but it can be
3529 specified at Configure time and should be accompanied by the necessary
3530 linker additions, eg;
3531 ./config -DOPENSSL_USE_GMP -lgmp
3534 *) "openssl engine" will not display ENGINE/DSO load failure errors when
3535 testing availability of engines with "-t" - the old behaviour is
3536 produced by increasing the feature's verbosity with "-tt".
3539 *) ECDSA routines: under certain error conditions uninitialized BN objects
3540 could be freed. Solution: make sure initialization is performed early
3541 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
3545 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
3546 and DH_METHOD (eg. by ENGINE implementations) to override the normal
3547 software implementations. For DSA and DH, parameter generation can
3548 also be overriden by providing the appropriate method callbacks.
3551 *) Change the "progress" mechanism used in key-generation and
3552 primality testing to functions that take a new BN_GENCB pointer in
3553 place of callback/argument pairs. The new API functions have "_ex"
3554 postfixes and the older functions are reimplemented as wrappers for
3555 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
3556 declarations of the old functions to help (graceful) attempts to
3557 migrate to the new functions. Also, the new key-generation API
3558 functions operate on a caller-supplied key-structure and return
3559 success/failure rather than returning a key or NULL - this is to
3560 help make "keygen" another member function of RSA_METHOD etc.
3562 Example for using the new callback interface:
3564 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
3568 BN_GENCB_set(&my_cb, my_callback, my_arg);
3570 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
3571 /* For the meaning of a, b in calls to my_callback(), see the
3572 * documentation of the function that calls the callback.
3573 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
3574 * my_callback should return 1 if it wants BN_is_prime_ex()
3575 * to continue, or 0 to stop.
3580 *) Change the ZLIB compression method to be stateful, and make it
3581 available to TLS with the number defined in
3582 draft-ietf-tls-compression-04.txt.
3585 *) Add the ASN.1 structures and functions for CertificatePair, which
3586 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3588 CertificatePair ::= SEQUENCE {
3589 forward [0] Certificate OPTIONAL,
3590 reverse [1] Certificate OPTIONAL,
3591 -- at least one of the pair shall be present -- }
3593 Also implement the PEM functions to read and write certificate
3594 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3596 This needed to be defined, mostly for the sake of the LDAP
3597 attribute crossCertificatePair, but may prove useful elsewhere as
3601 *) Make it possible to inhibit symlinking of shared libraries in
3602 Makefile.shared, for Cygwin's sake.
3605 *) Extend the BIGNUM API by creating a function
3606 void BN_set_negative(BIGNUM *a, int neg);
3607 and a macro that behave like
3608 int BN_is_negative(const BIGNUM *a);
3610 to avoid the need to access 'a->neg' directly in applications.
3613 *) Implement fast modular reduction for pseudo-Mersenne primes
3614 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3615 EC_GROUP_new_curve_GFp() will now automatically use this
3617 [Nils Larsch <nla@trustcenter.de>]
3619 *) Add new lock type (CRYPTO_LOCK_BN).
3622 *) Change the ENGINE framework to automatically load engines
3623 dynamically from specific directories unless they could be
3624 found to already be built in or loaded. Move all the
3625 current engines except for the cryptodev one to a new
3627 The engines in engines/ are built as shared libraries if
3628 the "shared" options was given to ./Configure or ./config.
3629 Otherwise, they are inserted in libcrypto.a.
3630 /usr/local/ssl/engines is the default directory for dynamic
3631 engines, but that can be overriden at configure time through
3632 the usual use of --prefix and/or --openssldir, and at run
3633 time with the environment variable OPENSSL_ENGINES.
3634 [Geoff Thorpe and Richard Levitte]
3636 *) Add Makefile.shared, a helper makefile to build shared
3637 libraries. Addapt Makefile.org.
3640 *) Add version info to Win32 DLLs.
3641 [Peter 'Luna' Runestig" <peter@runestig.com>]
3643 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3644 can be added using this API to created arbitrary PKCS#12
3645 files while avoiding the low level API.
3647 New options to PKCS12_create(), key or cert can be NULL and
3648 will then be omitted from the output file. The encryption
3649 algorithm NIDs can be set to -1 for no encryption, the mac
3650 iteration count can be set to 0 to omit the mac.
3652 Enhance pkcs12 utility by making the -nokeys and -nocerts
3653 options work when creating a PKCS#12 file. New option -nomac
3654 to omit the mac, NONE can be set for an encryption algorithm.
3655 New code is modified to use the enhanced PKCS12_create()
3656 instead of the low level API.
3659 *) Extend ASN1 encoder to support indefinite length constructed
3660 encoding. This can output sequences tags and octet strings in
3661 this form. Modify pk7_asn1.c to support indefinite length
3662 encoding. This is experimental and needs additional code to
3663 be useful, such as an ASN1 bio and some enhanced streaming
3666 Extend template encode functionality so that tagging is passed
3667 down to the template encoder.
3670 *) Let 'openssl req' fail if an argument to '-newkey' is not
3671 recognized instead of using RSA as a default.
3674 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3675 As these are not official, they are not included in "ALL";
3676 the "ECCdraft" ciphersuite group alias can be used to select them.
3677 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3679 *) Add ECDH engine support.
3680 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3682 *) Add ECDH in new directory crypto/ecdh/.
3683 [Douglas Stebila (Sun Microsystems Laboratories)]
3685 *) Let BN_rand_range() abort with an error after 100 iterations
3686 without success (which indicates a broken PRNG).
3689 *) Change BN_mod_sqrt() so that it verifies that the input value
3690 is really the square of the return value. (Previously,
3691 BN_mod_sqrt would show GIGO behaviour.)
3694 *) Add named elliptic curves over binary fields from X9.62, SECG,
3695 and WAP/WTLS; add OIDs that were still missing.
3697 [Sheueling Chang Shantz and Douglas Stebila
3698 (Sun Microsystems Laboratories)]
3700 *) Extend the EC library for elliptic curves over binary fields
3701 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3704 EC_GF2m_simple_method
3708 EC_GROUP_new_curve_GF2m
3709 EC_GROUP_set_curve_GF2m
3710 EC_GROUP_get_curve_GF2m
3711 EC_POINT_set_affine_coordinates_GF2m
3712 EC_POINT_get_affine_coordinates_GF2m
3713 EC_POINT_set_compressed_coordinates_GF2m
3715 Point compression for binary fields is disabled by default for
3716 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3719 As binary polynomials are represented as BIGNUMs, various members
3720 of the EC_GROUP and EC_POINT data structures can be shared
3721 between the implementations for prime fields and binary fields;
3722 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3723 are essentially identical to their ..._GFp counterparts.
3724 (For simplicity, the '..._GFp' prefix has been dropped from
3725 various internal method names.)
3727 An internal 'field_div' method (similar to 'field_mul' and
3728 'field_sqr') has been added; this is used only for binary fields.
3730 [Sheueling Chang Shantz and Douglas Stebila
3731 (Sun Microsystems Laboratories)]
3733 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3734 through methods ('mul', 'precompute_mult').
3736 The generic implementations (now internally called 'ec_wNAF_mul'
3737 and 'ec_wNAF_precomputed_mult') remain the default if these
3738 methods are undefined.
3740 [Sheueling Chang Shantz and Douglas Stebila
3741 (Sun Microsystems Laboratories)]
3743 *) New function EC_GROUP_get_degree, which is defined through
3744 EC_METHOD. For curves over prime fields, this returns the bit
3745 length of the modulus.
3747 [Sheueling Chang Shantz and Douglas Stebila
3748 (Sun Microsystems Laboratories)]
3750 *) New functions EC_GROUP_dup, EC_POINT_dup.
3751 (These simply call ..._new and ..._copy).
3753 [Sheueling Chang Shantz and Douglas Stebila
3754 (Sun Microsystems Laboratories)]
3756 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3757 Polynomials are represented as BIGNUMs (where the sign bit is not
3758 used) in the following functions [macros]:
3761 BN_GF2m_sub [= BN_GF2m_add]
3762 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3763 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3764 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3766 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3767 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3768 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3769 BN_GF2m_cmp [= BN_ucmp]
3771 (Note that only the 'mod' functions are actually for fields GF(2^m).
3772 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3774 For some functions, an the irreducible polynomial defining a
3775 field can be given as an 'unsigned int[]' with strictly
3776 decreasing elements giving the indices of those bits that are set;
3777 i.e., p[] represents the polynomial
3778 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3780 p[0] > p[1] > ... > p[k] = 0.
3781 This applies to the following functions:
3786 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3787 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3789 BN_GF2m_mod_sqrt_arr
3790 BN_GF2m_mod_solve_quad_arr
3794 Conversion can be performed by the following functions:
3799 bntest.c has additional tests for binary polynomial arithmetic.
3801 Two implementations for BN_GF2m_mod_div() are available.
3802 The default algorithm simply uses BN_GF2m_mod_inv() and
3803 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3804 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3805 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3807 [Sheueling Chang Shantz and Douglas Stebila
3808 (Sun Microsystems Laboratories)]
3810 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3811 functionality is disabled at compile-time.
3812 [Douglas Stebila <douglas.stebila@sun.com>]
3814 *) Change default behaviour of 'openssl asn1parse' so that more
3815 information is visible when viewing, e.g., a certificate:
3817 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3818 mode the content of non-printable OCTET STRINGs is output in a
3819 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3820 avoid the appearance of a printable string.
3821 [Nils Larsch <nla@trustcenter.de>]
3823 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3825 EC_GROUP_set_asn1_flag()
3826 EC_GROUP_get_asn1_flag()
3827 EC_GROUP_set_point_conversion_form()
3828 EC_GROUP_get_point_conversion_form()
3829 These control ASN1 encoding details:
3830 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3831 has been set to OPENSSL_EC_NAMED_CURVE.
3832 - Points are encoded in uncompressed form by default; options for
3833 asn1_for are as for point2oct, namely
3834 POINT_CONVERSION_COMPRESSED
3835 POINT_CONVERSION_UNCOMPRESSED
3836 POINT_CONVERSION_HYBRID
3838 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3841 EC_GROUP_get0_seed()
3842 EC_GROUP_get_seed_len()
3843 This is used only for ASN1 purposes (so far).
3844 [Nils Larsch <nla@trustcenter.de>]
3846 *) Add 'field_type' member to EC_METHOD, which holds the NID
3847 of the appropriate field type OID. The new function
3848 EC_METHOD_get_field_type() returns this value.
3849 [Nils Larsch <nla@trustcenter.de>]
3854 EC_POINT_point2hex()
3855 EC_POINT_hex2point()
3856 providing useful interfaces to EC_POINT_point2oct() and
3857 EC_POINT_oct2point().
3858 [Nils Larsch <nla@trustcenter.de>]
3860 *) Change internals of the EC library so that the functions
3861 EC_GROUP_set_generator()
3862 EC_GROUP_get_generator()
3863 EC_GROUP_get_order()
3864 EC_GROUP_get_cofactor()
3865 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3866 to methods, which would lead to unnecessary code duplication when
3867 adding different types of curves.
3868 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3870 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3871 arithmetic, and such that modified wNAFs are generated
3872 (which avoid length expansion in many cases).
3875 *) Add a function EC_GROUP_check_discriminant() (defined via
3876 EC_METHOD) that verifies that the curve discriminant is non-zero.
3878 Add a function EC_GROUP_check() that makes some sanity tests
3879 on a EC_GROUP, its generator and order. This includes
3880 EC_GROUP_check_discriminant().
3881 [Nils Larsch <nla@trustcenter.de>]
3883 *) Add ECDSA in new directory crypto/ecdsa/.
3885 Add applications 'openssl ecparam' and 'openssl ecdsa'
3886 (these are based on 'openssl dsaparam' and 'openssl dsa').
3888 ECDSA support is also included in various other files across the
3889 library. Most notably,
3890 - 'openssl req' now has a '-newkey ecdsa:file' option;
3891 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3892 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3893 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3894 them suitable for ECDSA where domain parameters must be
3895 extracted before the specific public key;
3896 - ECDSA engine support has been added.
3897 [Nils Larsch <nla@trustcenter.de>]
3899 *) Include some named elliptic curves, and add OIDs from X9.62,
3900 SECG, and WAP/WTLS. Each curve can be obtained from the new
3902 EC_GROUP_new_by_curve_name(),
3903 and the list of available named curves can be obtained with
3904 EC_get_builtin_curves().
3905 Also add a 'curve_name' member to EC_GROUP objects, which can be
3907 EC_GROUP_set_curve_name()
3908 EC_GROUP_get_curve_name()
3909 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3911 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3912 was actually never needed) and in BN_mul(). The removal in BN_mul()
3913 required a small change in bn_mul_part_recursive() and the addition
3914 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3915 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3916 bn_sub_words() and bn_add_words() except they take arrays with
3920 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3922 *) Cleanse PEM buffers before freeing them since they may contain
3924 [Benjamin Bennett <ben@psc.edu>]
3926 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3927 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3928 authentication-only ciphersuites.
3931 *) Since AES128 and AES256 share a single mask bit in the logic of
3932 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3933 kludge to work properly if AES128 is available and AES256 isn't.
3936 *) Expand security boundary to match 1.1.1 module.
3939 *) Remove redundant features: hash file source, editing of test vectors
3940 modify fipsld to use external fips_premain.c signature.
3943 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3944 run algorithm test programs.
3947 *) Make algorithm test programs more tolerant of whitespace.
3950 *) Have SSL/TLS server implementation tolerate "mismatched" record
3951 protocol version while receiving ClientHello even if the
3952 ClientHello is fragmented. (The server can't insist on the
3953 particular protocol version it has chosen before the ServerHello
3954 message has informed the client about his choice.)
3957 *) Load error codes if they are not already present instead of using a
3958 static variable. This allows them to be cleanly unloaded and reloaded.
3961 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3963 *) Introduce limits to prevent malicious keys being able to
3964 cause a denial of service. (CVE-2006-2940)
3965 [Steve Henson, Bodo Moeller]
3967 *) Fix ASN.1 parsing of certain invalid structures that can result
3968 in a denial of service. (CVE-2006-2937) [Steve Henson]
3970 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3971 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3973 *) Fix SSL client code which could crash if connecting to a
3974 malicious SSLv2 server. (CVE-2006-4343)
3975 [Tavis Ormandy and Will Drewry, Google Security Team]
3977 *) Change ciphersuite string processing so that an explicit
3978 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3979 will no longer include "AES128-SHA"), and any other similar
3980 ciphersuite (same bitmap) from *other* protocol versions (so that
3981 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3982 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3983 changes from 0.9.8b and 0.9.8d.
3986 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3988 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3989 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3991 *) Change the Unix randomness entropy gathering to use poll() when
3992 possible instead of select(), since the latter has some
3993 undesirable limitations.
3994 [Darryl Miles via Richard Levitte and Bodo Moeller]
3996 *) Disable rogue ciphersuites:
3998 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3999 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4000 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
4002 The latter two were purportedly from
4003 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4006 Also deactive the remaining ciphersuites from
4007 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4008 unofficial, and the ID has long expired.
4011 *) Fix RSA blinding Heisenbug (problems sometimes occured on
4012 dual-core machines) and other potential thread-safety issues.
4015 Changes between 0.9.7i and 0.9.7j [04 May 2006]
4017 *) Adapt fipsld and the build system to link against the validated FIPS
4018 module in FIPS mode.
4021 *) Fixes for VC++ 2005 build under Windows.
4024 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
4025 from a Windows bash shell such as MSYS. It is autodetected from the
4026 "config" script when run from a VC++ environment. Modify standard VC++
4027 build to use fipscanister.o from the GNU make build.
4030 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
4032 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
4033 The value now differs depending on if you build for FIPS or not.
4034 BEWARE! A program linked with a shared FIPSed libcrypto can't be
4035 safely run with a non-FIPSed libcrypto, as it may crash because of
4036 the difference induced by this change.
4039 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
4041 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4042 (part of SSL_OP_ALL). This option used to disable the
4043 countermeasure against man-in-the-middle protocol-version
4044 rollback in the SSL 2.0 server implementation, which is a bad
4045 idea. (CVE-2005-2969)
4047 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4048 for Information Security, National Institute of Advanced Industrial
4049 Science and Technology [AIST], Japan)]
4051 *) Minimal support for X9.31 signatures and PSS padding modes. This is
4052 mainly for FIPS compliance and not fully integrated at this stage.
4055 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
4056 the exponentiation using a fixed-length exponent. (Otherwise,
4057 the information leaked through timing could expose the secret key
4058 after many signatures; cf. Bleichenbacher's attack on DSA with
4062 *) Make a new fixed-window mod_exp implementation the default for
4063 RSA, DSA, and DH private-key operations so that the sequence of
4064 squares and multiplies and the memory access pattern are
4065 independent of the particular secret key. This will mitigate
4066 cache-timing and potential related attacks.
4068 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
4069 and this is automatically used by BN_mod_exp_mont() if the new flag
4070 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
4071 will use this BN flag for private exponents unless the flag
4072 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
4073 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
4075 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
4077 *) Change the client implementation for SSLv23_method() and
4078 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
4079 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
4080 (Previously, the SSL 2.0 backwards compatible Client Hello
4081 message format would be used even with SSL_OP_NO_SSLv2.)
4084 *) Add support for smime-type MIME parameter in S/MIME messages which some
4088 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
4089 a threadsafe manner. Modify rsa code to use new function and add calls
4090 to dsa and dh code (which had race conditions before).
4093 *) Include the fixed error library code in the C error file definitions
4094 instead of fixing them up at runtime. This keeps the error code
4095 structures constant.
4098 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
4100 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
4103 *) Fixes for newer kerberos headers. NB: the casts are needed because
4104 the 'length' field is signed on one version and unsigned on another
4105 with no (?) obvious way to tell the difference, without these VC++
4106 complains. Also the "definition" of FAR (blank) is no longer included
4107 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
4108 some needed definitions.
4111 *) Undo Cygwin change.
4114 *) Added support for proxy certificates according to RFC 3820.
4115 Because they may be a security thread to unaware applications,
4116 they must be explicitely allowed in run-time. See
4117 docs/HOWTO/proxy_certificates.txt for further information.
4120 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
4122 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
4123 server and client random values. Previously
4124 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
4125 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
4127 This change has negligible security impact because:
4129 1. Server and client random values still have 24 bytes of pseudo random
4132 2. Server and client random values are sent in the clear in the initial
4135 3. The master secret is derived using the premaster secret (48 bytes in
4136 size for static RSA ciphersuites) as well as client server and random
4139 The OpenSSL team would like to thank the UK NISCC for bringing this issue
4142 [Stephen Henson, reported by UK NISCC]
4144 *) Use Windows randomness collection on Cygwin.
4147 *) Fix hang in EGD/PRNGD query when communication socket is closed
4148 prematurely by EGD/PRNGD.
4149 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
4151 *) Prompt for pass phrases when appropriate for PKCS12 input format.
4154 *) Back-port of selected performance improvements from development
4155 branch, as well as improved support for PowerPC platforms.
4158 *) Add lots of checks for memory allocation failure, error codes to indicate
4159 failure and freeing up memory if a failure occurs.
4160 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
4162 *) Add new -passin argument to dgst.
4165 *) Perform some character comparisons of different types in X509_NAME_cmp:
4166 this is needed for some certificates that reencode DNs into UTF8Strings
4167 (in violation of RFC3280) and can't or wont issue name rollover
4171 *) Make an explicit check during certificate validation to see that
4172 the CA setting in each certificate on the chain is correct. As a
4173 side effect always do the following basic checks on extensions,
4174 not just when there's an associated purpose to the check:
4176 - if there is an unhandled critical extension (unless the user
4177 has chosen to ignore this fault)
4178 - if the path length has been exceeded (if one is set at all)
4179 - that certain extensions fit the associated purpose (if one has
4183 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
4185 *) Avoid a race condition when CRLs are checked in a multi threaded
4186 environment. This would happen due to the reordering of the revoked
4187 entries during signature checking and serial number lookup. Now the
4188 encoding is cached and the serial number sort performed under a lock.
4189 Add new STACK function sk_is_sorted().
4192 *) Add Delta CRL to the extension code.
4195 *) Various fixes to s3_pkt.c so alerts are sent properly.
4196 [David Holmes <d.holmes@f5.com>]
4198 *) Reduce the chances of duplicate issuer name and serial numbers (in
4199 violation of RFC3280) using the OpenSSL certificate creation utilities.
4200 This is done by creating a random 64 bit value for the initial serial
4201 number when a serial number file is created or when a self signed
4202 certificate is created using 'openssl req -x509'. The initial serial
4203 number file is created using 'openssl x509 -next_serial' in CA.pl
4204 rather than being initialized to 1.
4207 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
4209 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4210 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4211 [Joe Orton, Steve Henson]
4213 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
4215 [Joe Orton, Steve Henson]
4217 *) Make it possible to have multiple active certificates with the same
4218 subject in the CA index file. This is done only if the keyword
4219 'unique_subject' is set to 'no' in the main CA section (default
4220 if 'CA_default') of the configuration file. The value is saved
4221 with the database itself in a separate index attribute file,
4222 named like the index file with '.attr' appended to the name.
4225 *) X509 verify fixes. Disable broken certificate workarounds when
4226 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
4227 keyUsage extension present. Don't accept CRLs with unhandled critical
4228 extensions: since verify currently doesn't process CRL extensions this
4229 rejects a CRL with *any* critical extensions. Add new verify error codes
4233 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
4234 A clarification of RFC2560 will require the use of OCTET STRINGs and
4235 some implementations cannot handle the current raw format. Since OpenSSL
4236 copies and compares OCSP nonces as opaque blobs without any attempt at
4237 parsing them this should not create any compatibility issues.
4240 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
4241 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
4242 this HMAC (and other) operations are several times slower than OpenSSL
4246 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
4247 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4249 *) Use the correct content when signing type "other".
4252 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
4254 *) Fix various bugs revealed by running the NISCC test suite:
4256 Stop out of bounds reads in the ASN1 code when presented with
4257 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4259 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
4261 If verify callback ignores invalid public key errors don't try to check
4262 certificate signature with the NULL public key.
4266 *) New -ignore_err option in ocsp application to stop the server
4267 exiting on the first error in a request.
4270 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4271 if the server requested one: as stated in TLS 1.0 and SSL 3.0
4275 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
4276 extra data after the compression methods not only for TLS 1.0
4277 but also for SSL 3.0 (as required by the specification).
4278 [Bodo Moeller; problem pointed out by Matthias Loepfe]
4280 *) Change X509_certificate_type() to mark the key as exported/exportable
4281 when it's 512 *bits* long, not 512 bytes.
4284 *) Change AES_cbc_encrypt() so it outputs exact multiple of
4285 blocks during encryption.
4288 *) Various fixes to base64 BIO and non blocking I/O. On write
4289 flushes were not handled properly if the BIO retried. On read
4290 data was not being buffered properly and had various logic bugs.
4291 This also affects blocking I/O when the data being decoded is a
4295 *) Various S/MIME bugfixes and compatibility changes:
4296 output correct application/pkcs7 MIME type if
4297 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
4298 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
4299 of files as .eml work). Correctly handle very long lines in MIME
4303 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
4305 *) Countermeasure against the Klima-Pokorny-Rosa extension of
4306 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
4307 a protocol version number mismatch like a decryption error
4308 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
4311 *) Turn on RSA blinding by default in the default implementation
4312 to avoid a timing attack. Applications that don't want it can call
4313 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
4314 They would be ill-advised to do so in most cases.
4315 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
4317 *) Change RSA blinding code so that it works when the PRNG is not
4318 seeded (in this case, the secret RSA exponent is abused as
4319 an unpredictable seed -- if it is not unpredictable, there
4320 is no point in blinding anyway). Make RSA blinding thread-safe
4321 by remembering the creator's thread ID in rsa->blinding and
4322 having all other threads use local one-time blinding factors
4323 (this requires more computation than sharing rsa->blinding, but
4324 avoids excessive locking; and if an RSA object is not shared
4325 between threads, blinding will still be very fast).
4328 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
4329 ENGINE as defaults for all supported algorithms irrespective of
4330 the 'flags' parameter. 'flags' is now honoured, so applications
4331 should make sure they are passing it correctly.
4334 *) Target "mingw" now allows native Windows code to be generated in
4335 the Cygwin environment as well as with the MinGW compiler.
4338 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
4340 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
4341 via timing by performing a MAC computation even if incorrrect
4342 block cipher padding has been found. This is a countermeasure
4343 against active attacks where the attacker has to distinguish
4344 between bad padding and a MAC verification error. (CVE-2003-0078)
4346 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
4347 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
4348 Martin Vuagnoux (EPFL, Ilion)]
4350 *) Make the no-err option work as intended. The intention with no-err
4351 is not to have the whole error stack handling routines removed from
4352 libcrypto, it's only intended to remove all the function name and
4353 reason texts, thereby removing some of the footprint that may not
4354 be interesting if those errors aren't displayed anyway.
4356 NOTE: it's still possible for any application or module to have it's
4357 own set of error texts inserted. The routines are there, just not
4358 used by default when no-err is given.
4361 *) Add support for FreeBSD on IA64.
4362 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
4364 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
4365 Kerberos function mit_des_cbc_cksum(). Before this change,
4366 the value returned by DES_cbc_cksum() was like the one from
4367 mit_des_cbc_cksum(), except the bytes were swapped.
4368 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
4370 *) Allow an application to disable the automatic SSL chain building.
4371 Before this a rather primitive chain build was always performed in
4372 ssl3_output_cert_chain(): an application had no way to send the
4373 correct chain if the automatic operation produced an incorrect result.
4375 Now the chain builder is disabled if either:
4377 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
4379 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
4381 The reasoning behind this is that an application would not want the
4382 auto chain building to take place if extra chain certificates are
4383 present and it might also want a means of sending no additional
4384 certificates (for example the chain has two certificates and the
4388 *) Add the possibility to build without the ENGINE framework.
4389 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
4391 *) Under Win32 gmtime() can return NULL: check return value in
4392 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
4395 *) DSA routines: under certain error conditions uninitialized BN objects
4396 could be freed. Solution: make sure initialization is performed early
4397 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
4398 Nils Larsch <nla@trustcenter.de> via PR#459)
4401 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
4402 checked on reconnect on the client side, therefore session resumption
4403 could still fail with a "ssl session id is different" error. This
4404 behaviour is masked when SSL_OP_ALL is used due to
4405 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
4406 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
4407 followup to PR #377.
4410 *) IA-32 assembler support enhancements: unified ELF targets, support
4411 for SCO/Caldera platforms, fix for Cygwin shared build.
4414 *) Add support for FreeBSD on sparc64. As a consequence, support for
4415 FreeBSD on non-x86 processors is separate from x86 processors on
4416 the config script, much like the NetBSD support.
4417 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
4419 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
4421 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
4424 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
4425 code (06) was taken as the first octet of the session ID and the last
4426 octet was ignored consequently. As a result SSLv2 client side session
4427 caching could not have worked due to the session ID mismatch between
4429 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
4433 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
4434 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
4438 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
4439 seems that in spite of existing for more than a year, many application
4440 author have done nothing to provide the necessary callbacks, which
4441 means that this particular engine will not work properly anywhere.
4442 This is a very unfortunate situation which forces us, in the name
4443 of usability, to give the hw_ncipher.c a static lock, which is part
4445 NOTE: This is for the 0.9.7 series ONLY. This hack will never
4446 appear in 0.9.8 or later. We EXPECT application authors to have
4447 dealt properly with this when 0.9.8 is released (unless we actually
4448 make such changes in the libcrypto locking code that changes will
4449 have to be made anyway).
4452 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
4453 octets have been read, EOF or an error occurs. Without this change
4454 some truncated ASN1 structures will not produce an error.
4457 *) Disable Heimdal support, since it hasn't been fully implemented.
4458 Still give the possibility to force the use of Heimdal, but with
4459 warnings and a request that patches get sent to openssl-dev.
4462 *) Add the VC-CE target, introduce the WINCE sysname, and add
4463 INSTALL.WCE and appropriate conditionals to make it build.
4464 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
4466 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
4467 cygssl-x.y.z.dll, where x, y and z are the major, minor and
4468 edit numbers of the version.
4469 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
4471 *) Introduce safe string copy and catenation functions
4472 (BUF_strlcpy() and BUF_strlcat()).
4473 [Ben Laurie (CHATS) and Richard Levitte]
4475 *) Avoid using fixed-size buffers for one-line DNs.
4476 [Ben Laurie (CHATS)]
4478 *) Add BUF_MEM_grow_clean() to avoid information leakage when
4479 resizing buffers containing secrets, and use where appropriate.
4480 [Ben Laurie (CHATS)]
4482 *) Avoid using fixed size buffers for configuration file location.
4483 [Ben Laurie (CHATS)]
4485 *) Avoid filename truncation for various CA files.
4486 [Ben Laurie (CHATS)]
4488 *) Use sizeof in preference to magic numbers.
4489 [Ben Laurie (CHATS)]
4491 *) Avoid filename truncation in cert requests.
4492 [Ben Laurie (CHATS)]
4494 *) Add assertions to check for (supposedly impossible) buffer
4496 [Ben Laurie (CHATS)]
4498 *) Don't cache truncated DNS entries in the local cache (this could
4499 potentially lead to a spoofing attack).
4500 [Ben Laurie (CHATS)]
4502 *) Fix various buffers to be large enough for hex/decimal
4503 representations in a platform independent manner.
4504 [Ben Laurie (CHATS)]
4506 *) Add CRYPTO_realloc_clean() to avoid information leakage when
4507 resizing buffers containing secrets, and use where appropriate.
4508 [Ben Laurie (CHATS)]
4510 *) Add BIO_indent() to avoid much slightly worrying code to do
4512 [Ben Laurie (CHATS)]
4514 *) Convert sprintf()/BIO_puts() to BIO_printf().
4515 [Ben Laurie (CHATS)]
4517 *) buffer_gets() could terminate with the buffer only half
4519 [Ben Laurie (CHATS)]
4521 *) Add assertions to prevent user-supplied crypto functions from
4522 overflowing internal buffers by having large block sizes, etc.
4523 [Ben Laurie (CHATS)]
4525 *) New OPENSSL_assert() macro (similar to assert(), but enabled
4527 [Ben Laurie (CHATS)]
4529 *) Eliminate unused copy of key in RC4.
4530 [Ben Laurie (CHATS)]
4532 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
4533 [Ben Laurie (CHATS)]
4535 *) Fix off-by-one error in EGD path.
4536 [Ben Laurie (CHATS)]
4538 *) If RANDFILE path is too long, ignore instead of truncating.
4539 [Ben Laurie (CHATS)]
4541 *) Eliminate unused and incorrectly sized X.509 structure
4543 [Ben Laurie (CHATS)]
4545 *) Eliminate unused and dangerous function knumber().
4546 [Ben Laurie (CHATS)]
4548 *) Eliminate unused and dangerous structure, KSSL_ERR.
4549 [Ben Laurie (CHATS)]
4551 *) Protect against overlong session ID context length in an encoded
4552 session object. Since these are local, this does not appear to be
4554 [Ben Laurie (CHATS)]
4556 *) Change from security patch (see 0.9.6e below) that did not affect
4557 the 0.9.6 release series:
4559 Remote buffer overflow in SSL3 protocol - an attacker could
4560 supply an oversized master key in Kerberos-enabled versions.
4562 [Ben Laurie (CHATS)]
4564 *) Change the SSL kerb5 codes to match RFC 2712.
4567 *) Make -nameopt work fully for req and add -reqopt switch.
4568 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
4570 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
4571 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
4573 *) Make sure tests can be performed even if the corresponding algorithms
4574 have been removed entirely. This was also the last step to make
4575 OpenSSL compilable with DJGPP under all reasonable conditions.
4576 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
4578 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
4579 to allow version independent disabling of normally unselected ciphers,
4580 which may be activated as a side-effect of selecting a single cipher.
4582 (E.g., cipher list string "RSA" enables ciphersuites that are left
4583 out of "ALL" because they do not provide symmetric encryption.
4584 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
4585 [Lutz Jaenicke, Bodo Moeller]
4587 *) Add appropriate support for separate platform-dependent build
4588 directories. The recommended way to make a platform-dependent
4589 build directory is the following (tested on Linux), maybe with
4592 # Place yourself outside of the OpenSSL source tree. In
4593 # this example, the environment variable OPENSSL_SOURCE
4594 # is assumed to contain the absolute OpenSSL source directory.
4595 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
4596 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
4597 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
4598 mkdir -p `dirname $F`
4599 ln -s $OPENSSL_SOURCE/$F $F
4602 To be absolutely sure not to disturb the source tree, a "make clean"
4603 is a good thing. If it isn't successfull, don't worry about it,
4604 it probably means the source directory is very clean.
4607 *) Make sure any ENGINE control commands make local copies of string
4608 pointers passed to them whenever necessary. Otherwise it is possible
4609 the caller may have overwritten (or deallocated) the original string
4610 data when a later ENGINE operation tries to use the stored values.
4611 [Götz Babin-Ebell <babinebell@trustcenter.de>]
4613 *) Improve diagnostics in file reading and command-line digests.
4614 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
4616 *) Add AES modes CFB and OFB to the object database. Correct an
4617 error in AES-CFB decryption.
4620 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
4621 allows existing EVP_CIPHER_CTX structures to be reused after
4622 calling EVP_*Final(). This behaviour is used by encryption
4623 BIOs and some applications. This has the side effect that
4624 applications must explicitly clean up cipher contexts with
4625 EVP_CIPHER_CTX_cleanup() or they will leak memory.
4628 *) Check the values of dna and dnb in bn_mul_recursive before calling
4629 bn_mul_comba (a non zero value means the a or b arrays do not contain
4630 n2 elements) and fallback to bn_mul_normal if either is not zero.
4633 *) Fix escaping of non-ASCII characters when using the -subj option
4634 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
4637 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
4638 form for "surname", serialNumber has no short form.
4639 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
4640 therefore remove "mail" short name for "internet 7".
4641 The OID for unique identifiers in X509 certificates is
4642 x500UniqueIdentifier, not uniqueIdentifier.
4643 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
4646 *) Add an "init" command to the ENGINE config module and auto initialize
4647 ENGINEs. Without any "init" command the ENGINE will be initialized
4648 after all ctrl commands have been executed on it. If init=1 the
4649 ENGINE is initailized at that point (ctrls before that point are run
4650 on the uninitialized ENGINE and after on the initialized one). If
4651 init=0 then the ENGINE will not be iniatialized at all.
4654 *) Fix the 'app_verify_callback' interface so that the user-defined
4655 argument is actually passed to the callback: In the
4656 SSL_CTX_set_cert_verify_callback() prototype, the callback
4657 declaration has been changed from
4660 int (*cb)(X509_STORE_CTX *,void *);
4661 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
4662 i=s->ctx->app_verify_callback(&ctx)
4663 has been changed into
4664 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
4666 To update applications using SSL_CTX_set_cert_verify_callback(),
4667 a dummy argument can be added to their callback functions.
4668 [D. K. Smetters <smetters@parc.xerox.com>]
4670 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
4671 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
4673 *) Add and OPENSSL_LOAD_CONF define which will cause
4674 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
4675 This allows older applications to transparently support certain
4676 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
4677 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
4678 load the config file and OPENSSL_add_all_algorithms_conf() which will
4679 always load it have also been added.
4682 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4683 Adjust NIDs and EVP layer.
4684 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4686 *) Config modules support in openssl utility.
4688 Most commands now load modules from the config file,
4689 though in a few (such as version) this isn't done
4690 because it couldn't be used for anything.
4692 In the case of ca and req the config file used is
4693 the same as the utility itself: that is the -config
4694 command line option can be used to specify an
4698 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4699 use "openssl_conf" if filename is NULL use default openssl config file.
4702 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4703 config section name. Add a new flag to tolerate a missing config file
4704 and move code to CONF_modules_load_file().
4707 *) Support for crypto accelerator cards from Accelerated Encryption
4708 Processing, www.aep.ie. (Use engine 'aep')
4709 The support was copied from 0.9.6c [engine] and adapted/corrected
4710 to work with the new engine framework.
4711 [AEP Inc. and Richard Levitte]
4713 *) Support for SureWare crypto accelerator cards from Baltimore
4714 Technologies. (Use engine 'sureware')
4715 The support was copied from 0.9.6c [engine] and adapted
4716 to work with the new engine framework.
4719 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4720 make the newer ENGINE framework commands for the CHIL engine work.
4721 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4723 *) Make it possible to produce shared libraries on ReliantUNIX.
4724 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4726 *) Add the configuration target debug-linux-ppro.
4727 Make 'openssl rsa' use the general key loading routines
4728 implemented in apps.c, and make those routines able to
4729 handle the key format FORMAT_NETSCAPE and the variant
4731 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4733 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4734 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4736 *) Add -keyform to rsautl, and document -engine.
4737 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4739 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4740 BIO_R_NO_SUCH_FILE error code rather than the generic
4741 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4744 *) Add new functions
4746 ERR_peek_last_error_line
4747 ERR_peek_last_error_line_data.
4748 These are similar to
4751 ERR_peek_error_line_data,
4752 but report on the latest error recorded rather than the first one
4753 still in the error queue.
4754 [Ben Laurie, Bodo Moeller]
4756 *) default_algorithms option in ENGINE config module. This allows things
4758 default_algorithms = ALL
4759 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4762 *) Prelminary ENGINE config module.
4765 *) New experimental application configuration code.
4768 *) Change the AES code to follow the same name structure as all other
4769 symmetric ciphers, and behave the same way. Move everything to
4770 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4771 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4773 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4774 [Ben Laurie and Theo de Raadt]
4776 *) Add option to output public keys in req command.
4777 [Massimiliano Pala madwolf@openca.org]
4779 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4780 (up to about 10% better than before for P-192 and P-224).
4783 *) New functions/macros
4785 SSL_CTX_set_msg_callback(ctx, cb)
4786 SSL_CTX_set_msg_callback_arg(ctx, arg)
4787 SSL_set_msg_callback(ssl, cb)
4788 SSL_set_msg_callback_arg(ssl, arg)
4790 to request calling a callback function
4792 void cb(int write_p, int version, int content_type,
4793 const void *buf, size_t len, SSL *ssl, void *arg)
4795 whenever a protocol message has been completely received
4796 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4797 protocol version according to which the SSL library interprets
4798 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4799 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4800 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4801 specification (change_cipher_spec(20), alert(21), handshake(22)).
4802 'buf' and 'len' point to the actual message, 'ssl' to the
4803 SSL object, and 'arg' is the application-defined value set by
4804 SSL[_CTX]_set_msg_callback_arg().
4806 'openssl s_client' and 'openssl s_server' have new '-msg' options
4807 to enable a callback that displays all protocol messages.
4810 *) Change the shared library support so shared libraries are built as
4811 soon as the corresponding static library is finished, and thereby get
4812 openssl and the test programs linked against the shared library.
4813 This still only happens when the keyword "shard" has been given to
4814 the configuration scripts.
4816 NOTE: shared library support is still an experimental thing, and
4817 backward binary compatibility is still not guaranteed.
4818 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
4820 *) Add support for Subject Information Access extension.
4821 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4823 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
4824 additional bytes when new memory had to be allocated, not just
4825 when reusing an existing buffer.
4828 *) New command line and configuration option 'utf8' for the req command.
4829 This allows field values to be specified as UTF8 strings.
4832 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
4833 runs for the former and machine-readable output for the latter.
4836 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
4837 of the e-mail address in the DN (i.e., it will go into a certificate
4838 extension only). The new configuration file option 'email_in_dn = no'
4839 has the same effect.
4840 [Massimiliano Pala madwolf@openca.org]
4842 *) Change all functions with names starting with des_ to be starting
4843 with DES_ instead. Add wrappers that are compatible with libdes,
4844 but are named _ossl_old_des_*. Finally, add macros that map the
4845 des_* symbols to the corresponding _ossl_old_des_* if libdes
4846 compatibility is desired. If OpenSSL 0.9.6c compatibility is
4847 desired, the des_* symbols will be mapped to DES_*, with one
4850 Since we provide two compatibility mappings, the user needs to
4851 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
4852 compatibility is desired. The default (i.e., when that macro
4853 isn't defined) is OpenSSL 0.9.6c compatibility.
4855 There are also macros that enable and disable the support of old
4856 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
4857 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
4858 are defined, the default will apply: to support the old des routines.
4860 In either case, one must include openssl/des.h to get the correct
4861 definitions. Do not try to just include openssl/des_old.h, that
4864 NOTE: This is a major break of an old API into a new one. Software
4865 authors are encouraged to switch to the DES_ style functions. Some
4866 time in the future, des_old.h and the libdes compatibility functions
4867 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
4868 default), and then completely removed.
4871 *) Test for certificates which contain unsupported critical extensions.
4872 If such a certificate is found during a verify operation it is
4873 rejected by default: this behaviour can be overridden by either
4874 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
4875 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
4876 X509_supported_extension() has also been added which returns 1 if a
4877 particular extension is supported.
4880 *) Modify the behaviour of EVP cipher functions in similar way to digests
4881 to retain compatibility with existing code.
4884 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
4885 compatibility with existing code. In particular the 'ctx' parameter does
4886 not have to be to be initialized before the call to EVP_DigestInit() and
4887 it is tidied up after a call to EVP_DigestFinal(). New function
4888 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
4889 EVP_MD_CTX_copy() changed to not require the destination to be
4890 initialized valid and new function EVP_MD_CTX_copy_ex() added which
4891 requires the destination to be valid.
4893 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
4894 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
4897 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
4898 so that complete 'Handshake' protocol structures are kept in memory
4899 instead of overwriting 'msg_type' and 'length' with 'body' data.
4902 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
4903 [Massimo Santin via Richard Levitte]
4905 *) Major restructuring to the underlying ENGINE code. This includes
4906 reduction of linker bloat, separation of pure "ENGINE" manipulation
4907 (initialisation, etc) from functionality dealing with implementations
4908 of specific crypto iterfaces. This change also introduces integrated
4909 support for symmetric ciphers and digest implementations - so ENGINEs
4910 can now accelerate these by providing EVP_CIPHER and EVP_MD
4911 implementations of their own. This is detailed in crypto/engine/README
4912 as it couldn't be adequately described here. However, there are a few
4913 API changes worth noting - some RSA, DSA, DH, and RAND functions that
4914 were changed in the original introduction of ENGINE code have now
4915 reverted back - the hooking from this code to ENGINE is now a good
4916 deal more passive and at run-time, operations deal directly with
4917 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
4918 dereferencing through an ENGINE pointer any more. Also, the ENGINE
4919 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
4920 they were not being used by the framework as there is no concept of a
4921 BIGNUM_METHOD and they could not be generalised to the new
4922 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
4923 ENGINE_cpy() has been removed as it cannot be consistently defined in
4927 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
4930 *) Change mkdef.pl to sort symbols that get the same entry number,
4931 and make sure the automatically generated functions ERR_load_*
4932 become part of libeay.num as well.
4935 *) New function SSL_renegotiate_pending(). This returns true once
4936 renegotiation has been requested (either SSL_renegotiate() call
4937 or HelloRequest/ClientHello receveived from the peer) and becomes
4938 false once a handshake has been completed.
4939 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
4940 sends a HelloRequest, but does not ensure that a handshake takes
4941 place. SSL_renegotiate_pending() is useful for checking if the
4942 client has followed the request.)
4945 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
4946 By default, clients may request session resumption even during
4947 renegotiation (if session ID contexts permit); with this option,
4948 session resumption is possible only in the first handshake.
4950 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
4951 more bits available for options that should not be part of
4952 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
4955 *) Add some demos for certificate and certificate request creation.
4958 *) Make maximum certificate chain size accepted from the peer application
4959 settable (SSL*_get/set_max_cert_list()), as proposed by
4960 "Douglas E. Engert" <deengert@anl.gov>.
4963 *) Add support for shared libraries for Unixware-7
4964 (Boyd Lynn Gerber <gerberb@zenez.com>).
4967 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
4968 be done prior to destruction. Use this to unload error strings from
4969 ENGINEs that load their own error strings. NB: This adds two new API
4970 functions to "get" and "set" this destroy handler in an ENGINE.
4973 *) Alter all existing ENGINE implementations (except "openssl" and
4974 "openbsd") to dynamically instantiate their own error strings. This
4975 makes them more flexible to be built both as statically-linked ENGINEs
4976 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
4977 Also, add stub code to each that makes building them as self-contained
4978 shared-libraries easier (see README.ENGINE).
4981 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
4982 implementations into applications that are completely implemented in
4983 self-contained shared-libraries. The "dynamic" ENGINE exposes control
4984 commands that can be used to configure what shared-library to load and
4985 to control aspects of the way it is handled. Also, made an update to
4986 the README.ENGINE file that brings its information up-to-date and
4987 provides some information and instructions on the "dynamic" ENGINE
4988 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
4991 *) Make it possible to unload ranges of ERR strings with a new
4992 "ERR_unload_strings" function.
4995 *) Add a copy() function to EVP_MD.
4998 *) Make EVP_MD routines take a context pointer instead of just the
4999 md_data void pointer.
5002 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
5003 that the digest can only process a single chunk of data
5004 (typically because it is provided by a piece of
5005 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
5006 is only going to provide a single chunk of data, and hence the
5007 framework needn't accumulate the data for oneshot drivers.
5010 *) As with "ERR", make it possible to replace the underlying "ex_data"
5011 functions. This change also alters the storage and management of global
5012 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
5013 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
5014 index counters. The API functions that use this state have been changed
5015 to take a "class_index" rather than pointers to the class's local STACK
5016 and counter, and there is now an API function to dynamically create new
5017 classes. This centralisation allows us to (a) plug a lot of the
5018 thread-safety problems that existed, and (b) makes it possible to clean
5019 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
5020 such data would previously have always leaked in application code and
5021 workarounds were in place to make the memory debugging turn a blind eye
5022 to it. Application code that doesn't use this new function will still
5023 leak as before, but their memory debugging output will announce it now
5024 rather than letting it slide.
5026 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
5027 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
5028 has a return value to indicate success or failure.
5031 *) Make it possible to replace the underlying "ERR" functions such that the
5032 global state (2 LHASH tables and 2 locks) is only used by the "default"
5033 implementation. This change also adds two functions to "get" and "set"
5034 the implementation prior to it being automatically set the first time
5035 any other ERR function takes place. Ie. an application can call "get",
5036 pass the return value to a module it has just loaded, and that module
5037 can call its own "set" function using that value. This means the
5038 module's "ERR" operations will use (and modify) the error state in the
5039 application and not in its own statically linked copy of OpenSSL code.
5042 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
5043 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
5044 the operation, and provides a more encapsulated way for external code
5045 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
5046 to use these functions rather than manually incrementing the counts.
5048 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
5051 *) Add EVP test program.
5054 *) Add symmetric cipher support to ENGINE. Expect the API to change!
5057 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
5058 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
5059 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
5060 These allow a CRL to be built without having to access X509_CRL fields
5061 directly. Modify 'ca' application to use new functions.
5064 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
5065 bug workarounds. Rollback attack detection is a security feature.
5066 The problem will only arise on OpenSSL servers when TLSv1 is not
5067 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
5068 Software authors not wanting to support TLSv1 will have special reasons
5069 for their choice and can explicitly enable this option.
5070 [Bodo Moeller, Lutz Jaenicke]
5072 *) Rationalise EVP so it can be extended: don't include a union of
5073 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
5074 (similar to those existing for EVP_CIPHER_CTX).
5079 EVP_MD_CTX_init(&md); /* new function call */
5080 EVP_DigestInit(&md, EVP_sha1());
5081 EVP_DigestUpdate(&md, in, len);
5082 EVP_DigestFinal(&md, out, NULL);
5083 EVP_MD_CTX_cleanup(&md); /* new function call */
5087 *) Make DES key schedule conform to the usual scheme, as well as
5088 correcting its structure. This means that calls to DES functions
5089 now have to pass a pointer to a des_key_schedule instead of a
5090 plain des_key_schedule (which was actually always a pointer
5093 des_key_schedule ks;
5095 des_set_key_checked(..., &ks);
5096 des_ncbc_encrypt(..., &ks, ...);
5098 (Note that a later change renames 'des_...' into 'DES_...'.)
5101 *) Initial reduction of linker bloat: the use of some functions, such as
5102 PEM causes large amounts of unused functions to be linked in due to
5103 poor organisation. For example pem_all.c contains every PEM function
5104 which has a knock on effect of linking in large amounts of (unused)
5105 ASN1 code. Grouping together similar functions and splitting unrelated
5106 functions prevents this.
5109 *) Cleanup of EVP macros.
5112 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
5113 correct _ecb suffix.
5116 *) Add initial OCSP responder support to ocsp application. The
5117 revocation information is handled using the text based index
5118 use by the ca application. The responder can either handle
5119 requests generated internally, supplied in files (for example
5120 via a CGI script) or using an internal minimal server.
5123 *) Add configuration choices to get zlib compression for TLS.
5126 *) Changes to Kerberos SSL for RFC 2712 compliance:
5127 1. Implemented real KerberosWrapper, instead of just using
5128 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
5129 2. Implemented optional authenticator field of KerberosWrapper.
5131 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
5132 and authenticator structs; see crypto/krb5/.
5134 Generalized Kerberos calls to support multiple Kerberos libraries.
5135 [Vern Staats <staatsvr@asc.hpc.mil>,
5136 Jeffrey Altman <jaltman@columbia.edu>
5137 via Richard Levitte]
5139 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
5140 already does with RSA. testdsa.h now has 'priv_key/pub_key'
5141 values for each of the key sizes rather than having just
5142 parameters (and 'speed' generating keys each time).
5145 *) Speed up EVP routines.
5148 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
5149 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
5150 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
5151 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
5153 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
5154 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
5155 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
5158 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
5160 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
5163 *) Added the OS2-EMX target.
5164 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
5166 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
5167 to support NCONF routines in extension code. New function CONF_set_nconf()
5168 to allow functions which take an NCONF to also handle the old LHASH
5169 structure: this means that the old CONF compatible routines can be
5170 retained (in particular wrt extensions) without having to duplicate the
5171 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
5174 *) Enhance the general user interface with mechanisms for inner control
5175 and with possibilities to have yes/no kind of prompts.
5178 *) Change all calls to low level digest routines in the library and
5179 applications to use EVP. Add missing calls to HMAC_cleanup() and
5180 don't assume HMAC_CTX can be copied using memcpy().
5181 [Verdon Walker <VWalker@novell.com>, Steve Henson]
5183 *) Add the possibility to control engines through control names but with
5184 arbitrary arguments instead of just a string.
5185 Change the key loaders to take a UI_METHOD instead of a callback
5186 function pointer. NOTE: this breaks binary compatibility with earlier
5187 versions of OpenSSL [engine].
5188 Adapt the nCipher code for these new conditions and add a card insertion
5192 *) Enhance the general user interface with mechanisms to better support
5193 dialog box interfaces, application-defined prompts, the possibility
5194 to use defaults (for example default passwords from somewhere else)
5195 and interrupts/cancellations.
5198 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
5199 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
5202 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
5203 tidy up some unnecessarily weird code in 'sk_new()').
5204 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
5206 *) Change the key loading routines for ENGINEs to use the same kind
5207 callback (pem_password_cb) as all other routines that need this
5211 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
5212 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
5213 than this minimum value is recommended.
5216 *) New random seeder for OpenVMS, using the system process statistics
5217 that are easily reachable.
5220 *) Windows apparently can't transparently handle global
5221 variables defined in DLLs. Initialisations such as:
5223 const ASN1_ITEM *it = &ASN1_INTEGER_it;
5225 wont compile. This is used by the any applications that need to
5226 declare their own ASN1 modules. This was fixed by adding the option
5227 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
5228 needed for static libraries under Win32.
5231 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
5232 setting of purpose and trust fields. New X509_STORE trust and
5233 purpose functions and tidy up setting in other SSL functions.
5236 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
5237 structure. These are inherited by X509_STORE_CTX when it is
5238 initialised. This allows various defaults to be set in the
5239 X509_STORE structure (such as flags for CRL checking and custom
5240 purpose or trust settings) for functions which only use X509_STORE_CTX
5241 internally such as S/MIME.
5243 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
5244 trust settings if they are not set in X509_STORE. This allows X509_STORE
5245 purposes and trust (in S/MIME for example) to override any set by default.
5247 Add command line options for CRL checking to smime, s_client and s_server
5251 *) Initial CRL based revocation checking. If the CRL checking flag(s)
5252 are set then the CRL is looked up in the X509_STORE structure and
5253 its validity and signature checked, then if the certificate is found
5254 in the CRL the verify fails with a revoked error.
5256 Various new CRL related callbacks added to X509_STORE_CTX structure.
5258 Command line options added to 'verify' application to support this.
5260 This needs some additional work, such as being able to handle multiple
5261 CRLs with different times, extension based lookup (rather than just
5262 by subject name) and ultimately more complete V2 CRL extension
5266 *) Add a general user interface API (crypto/ui/). This is designed
5267 to replace things like des_read_password and friends (backward
5268 compatibility functions using this new API are provided).
5269 The purpose is to remove prompting functions from the DES code
5270 section as well as provide for prompting through dialog boxes in
5271 a window system and the like.
5274 *) Add "ex_data" support to ENGINE so implementations can add state at a
5275 per-structure level rather than having to store it globally.
5278 *) Make it possible for ENGINE structures to be copied when retrieved by
5279 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
5280 This causes the "original" ENGINE structure to act like a template,
5281 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
5282 operational state can be localised to each ENGINE structure, despite the
5283 fact they all share the same "methods". New ENGINE structures returned in
5284 this case have no functional references and the return value is the single
5285 structural reference. This matches the single structural reference returned
5286 by ENGINE_by_id() normally, when it is incremented on the pre-existing
5290 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
5291 needs to match any other type at all we need to manually clear the
5295 *) Changes to the "openssl engine" utility to include;
5296 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
5297 about an ENGINE's available control commands.
5298 - executing control commands from command line arguments using the
5299 '-pre' and '-post' switches. '-post' is only used if '-t' is
5300 specified and the ENGINE is successfully initialised. The syntax for
5301 the individual commands are colon-separated, for example;
5302 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
5305 *) New dynamic control command support for ENGINEs. ENGINEs can now
5306 declare their own commands (numbers), names (strings), descriptions,
5307 and input types for run-time discovery by calling applications. A
5308 subset of these commands are implicitly classed as "executable"
5309 depending on their input type, and only these can be invoked through
5310 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
5311 can be based on user input, config files, etc). The distinction is
5312 that "executable" commands cannot return anything other than a boolean
5313 result and can only support numeric or string input, whereas some
5314 discoverable commands may only be for direct use through
5315 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
5316 pointers, or other custom uses. The "executable" commands are to
5317 support parameterisations of ENGINE behaviour that can be
5318 unambiguously defined by ENGINEs and used consistently across any
5319 OpenSSL-based application. Commands have been added to all the
5320 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
5321 control over shared-library paths without source code alterations.
5324 *) Changed all ENGINE implementations to dynamically allocate their
5325 ENGINEs rather than declaring them statically. Apart from this being
5326 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
5327 this also allows the implementations to compile without using the
5328 internal engine_int.h header.
5331 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
5332 'const' value. Any code that should be able to modify a RAND_METHOD
5333 should already have non-const pointers to it (ie. they should only
5334 modify their own ones).
5337 *) Made a variety of little tweaks to the ENGINE code.
5338 - "atalla" and "ubsec" string definitions were moved from header files
5339 to C code. "nuron" string definitions were placed in variables
5340 rather than hard-coded - allowing parameterisation of these values
5341 later on via ctrl() commands.
5342 - Removed unused "#if 0"'d code.
5343 - Fixed engine list iteration code so it uses ENGINE_free() to release
5344 structural references.
5345 - Constified the RAND_METHOD element of ENGINE structures.
5346 - Constified various get/set functions as appropriate and added
5347 missing functions (including a catch-all ENGINE_cpy that duplicates
5348 all ENGINE values onto a new ENGINE except reference counts/state).
5349 - Removed NULL parameter checks in get/set functions. Setting a method
5350 or function to NULL is a way of cancelling out a previously set
5351 value. Passing a NULL ENGINE parameter is just plain stupid anyway
5352 and doesn't justify the extra error symbols and code.
5353 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
5354 flags from engine_int.h to engine.h.
5355 - Changed prototypes for ENGINE handler functions (init(), finish(),
5356 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
5359 *) Implement binary inversion algorithm for BN_mod_inverse in addition
5360 to the algorithm using long division. The binary algorithm can be
5361 used only if the modulus is odd. On 32-bit systems, it is faster
5362 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
5363 roughly 5-15% for 256-bit moduli), so we use it only for moduli
5364 up to 450 bits. In 64-bit environments, the binary algorithm
5365 appears to be advantageous for much longer moduli; here we use it
5366 for moduli up to 2048 bits.
5369 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
5370 could not support the combine flag in choice fields.
5373 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
5374 extensions from a certificate request to the certificate.
5377 *) Allow multiple 'certopt' and 'nameopt' options to be separated
5378 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
5379 file: this allows the display of the certificate about to be
5380 signed to be customised, to allow certain fields to be included
5381 or excluded and extension details. The old system didn't display
5382 multicharacter strings properly, omitted fields not in the policy
5383 and couldn't display additional details such as extensions.
5386 *) Function EC_POINTs_mul for multiple scalar multiplication
5387 of an arbitrary number of elliptic curve points
5388 \sum scalars[i]*points[i],
5389 optionally including the generator defined for the EC_GROUP:
5390 scalar*generator + \sum scalars[i]*points[i].
5392 EC_POINT_mul is a simple wrapper function for the typical case
5393 that the point list has just one item (besides the optional
5397 *) First EC_METHODs for curves over GF(p):
5399 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
5400 operations and provides various method functions that can also
5401 operate with faster implementations of modular arithmetic.
5403 EC_GFp_mont_method() reuses most functions that are part of
5404 EC_GFp_simple_method, but uses Montgomery arithmetic.
5406 [Bodo Moeller; point addition and point doubling
5407 implementation directly derived from source code provided by
5408 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
5410 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
5411 crypto/ec/ec_lib.c):
5413 Curves are EC_GROUP objects (with an optional group generator)
5414 based on EC_METHODs that are built into the library.
5416 Points are EC_POINT objects based on EC_GROUP objects.
5418 Most of the framework would be able to handle curves over arbitrary
5419 finite fields, but as there are no obvious types for fields other
5420 than GF(p), some functions are limited to that for now.
5423 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
5424 that the file contains a complete HTTP response.
5427 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
5428 change the def and num file printf format specifier from "%-40sXXX"
5429 to "%-39s XXX". The latter will always guarantee a space after the
5430 field while the former will cause them to run together if the field
5431 is 40 of more characters long.
5434 *) Constify the cipher and digest 'method' functions and structures
5435 and modify related functions to take constant EVP_MD and EVP_CIPHER
5439 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
5440 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
5443 *) Modify EVP_Digest*() routines so they now return values. Although the
5444 internal software routines can never fail additional hardware versions
5448 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
5450 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
5451 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
5454 ERR_R_NESTED_ASN1_ERROR
5456 ERR_R_MISSING_ASN1_EOS
5457 were 4 .. 9, conflicting with
5458 ERR_LIB_RSA (= ERR_R_RSA_LIB)
5460 ERR_LIB_PEM (= ERR_R_PEM_LIB).
5461 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
5463 Add new error code 'ERR_R_INTERNAL_ERROR'.
5466 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
5470 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
5471 sets the subject name for a new request or supersedes the
5472 subject name in a given request. Formats that can be parsed are
5473 'CN=Some Name, OU=myOU, C=IT'
5475 'CN=Some Name/OU=myOU/C=IT'.
5477 Add options '-batch' and '-verbose' to 'openssl req'.
5478 [Massimiliano Pala <madwolf@hackmasters.net>]
5480 *) Introduce the possibility to access global variables through
5481 functions on platform were that's the best way to handle exporting
5482 global variables in shared libraries. To enable this functionality,
5483 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
5484 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
5485 is normally done by Configure or something similar).
5487 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
5488 in the source file (foo.c) like this:
5490 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
5491 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
5493 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
5494 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
5496 OPENSSL_DECLARE_GLOBAL(int,foo);
5497 #define foo OPENSSL_GLOBAL_REF(foo)
5498 OPENSSL_DECLARE_GLOBAL(double,bar);
5499 #define bar OPENSSL_GLOBAL_REF(bar)
5501 The #defines are very important, and therefore so is including the
5502 header file everywhere where the defined globals are used.
5504 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
5505 of ASN.1 items, but that structure is a bit different.
5507 The largest change is in util/mkdef.pl which has been enhanced with
5508 better and easier to understand logic to choose which symbols should
5509 go into the Windows .def files as well as a number of fixes and code
5510 cleanup (among others, algorithm keywords are now sorted
5511 lexicographically to avoid constant rewrites).
5514 *) In BN_div() keep a copy of the sign of 'num' before writing the
5515 result to 'rm' because if rm==num the value will be overwritten
5516 and produce the wrong result if 'num' is negative: this caused
5517 problems with BN_mod() and BN_nnmod().
5520 *) Function OCSP_request_verify(). This checks the signature on an
5521 OCSP request and verifies the signer certificate. The signer
5522 certificate is just checked for a generic purpose and OCSP request
5526 *) Add OCSP_check_validity() function to check the validity of OCSP
5527 responses. OCSP responses are prepared in real time and may only
5528 be a few seconds old. Simply checking that the current time lies
5529 between thisUpdate and nextUpdate max reject otherwise valid responses
5530 caused by either OCSP responder or client clock inaccuracy. Instead
5531 we allow thisUpdate and nextUpdate to fall within a certain period of
5532 the current time. The age of the response can also optionally be
5533 checked. Two new options -validity_period and -status_age added to
5537 *) If signature or public key algorithm is unrecognized print out its
5538 OID rather that just UNKNOWN.
5541 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
5542 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
5543 ID to be generated from the issuer certificate alone which can then be
5544 passed to OCSP_id_issuer_cmp().
5547 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
5548 ASN1 modules to export functions returning ASN1_ITEM pointers
5549 instead of the ASN1_ITEM structures themselves. This adds several
5550 new macros which allow the underlying ASN1 function/structure to
5551 be accessed transparently. As a result code should not use ASN1_ITEM
5552 references directly (such as &X509_it) but instead use the relevant
5553 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
5554 use of the new ASN1 code on platforms where exporting structures
5555 is problematical (for example in shared libraries) but exporting
5556 functions returning pointers to structures is not.
5559 *) Add support for overriding the generation of SSL/TLS session IDs.
5560 These callbacks can be registered either in an SSL_CTX or per SSL.
5561 The purpose of this is to allow applications to control, if they wish,
5562 the arbitrary values chosen for use as session IDs, particularly as it
5563 can be useful for session caching in multiple-server environments. A
5564 command-line switch for testing this (and any client code that wishes
5565 to use such a feature) has been added to "s_server".
5566 [Geoff Thorpe, Lutz Jaenicke]
5568 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
5569 of the form '#if defined(...) || defined(...) || ...' and
5570 '#if !defined(...) && !defined(...) && ...'. This also avoids
5571 the growing number of special cases it was previously handling.
5574 *) Make all configuration macros available for application by making
5575 sure they are available in opensslconf.h, by giving them names starting
5576 with "OPENSSL_" to avoid conflicts with other packages and by making
5577 sure e_os2.h will cover all platform-specific cases together with
5579 Additionally, it is now possible to define configuration/platform-
5580 specific names (called "system identities"). In the C code, these
5581 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
5582 macro with the name beginning with "OPENSSL_SYS_", which is determined
5583 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
5587 *) New option -set_serial to 'req' and 'x509' this allows the serial
5588 number to use to be specified on the command line. Previously self
5589 signed certificates were hard coded with serial number 0 and the
5590 CA options of 'x509' had to use a serial number in a file which was
5594 *) New options to 'ca' utility to support V2 CRL entry extensions.
5595 Currently CRL reason, invalidity date and hold instruction are
5596 supported. Add new CRL extensions to V3 code and some new objects.
5599 *) New function EVP_CIPHER_CTX_set_padding() this is used to
5600 disable standard block padding (aka PKCS#5 padding) in the EVP
5601 API, which was previously mandatory. This means that the data is
5602 not padded in any way and so the total length much be a multiple
5603 of the block size, otherwise an error occurs.
5606 *) Initial (incomplete) OCSP SSL support.
5609 *) New function OCSP_parse_url(). This splits up a URL into its host,
5610 port and path components: primarily to parse OCSP URLs. New -url
5611 option to ocsp utility.
5614 *) New nonce behavior. The return value of OCSP_check_nonce() now
5615 reflects the various checks performed. Applications can decide
5616 whether to tolerate certain situations such as an absent nonce
5617 in a response when one was present in a request: the ocsp application
5618 just prints out a warning. New function OCSP_add1_basic_nonce()
5619 this is to allow responders to include a nonce in a response even if
5620 the request is nonce-less.
5623 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
5624 skipped when using openssl x509 multiple times on a single input file,
5625 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
5628 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
5629 set string type: to handle setting ASN1_TIME structures. Fix ca
5630 utility to correctly initialize revocation date of CRLs.
5633 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
5634 the clients preferred ciphersuites and rather use its own preferences.
5635 Should help to work around M$ SGC (Server Gated Cryptography) bug in
5636 Internet Explorer by ensuring unchanged hash method during stepup.
5637 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
5640 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
5641 to aes and add a new 'exist' option to print out symbols that don't
5645 *) Additional options to ocsp utility to allow flags to be set and
5646 additional certificates supplied.
5649 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
5650 OCSP client a number of certificate to only verify the response
5654 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
5655 handle the new API. Currently only ECB, CBC modes supported. Add new
5658 Add TLS AES ciphersuites as described in RFC3268, "Advanced
5659 Encryption Standard (AES) Ciphersuites for Transport Layer
5660 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
5661 not enabled by default and were not part of the "ALL" ciphersuite
5662 alias because they were not yet official; they could be
5663 explicitly requested by specifying the "AESdraft" ciphersuite
5664 group alias. In the final release of OpenSSL 0.9.7, the group
5665 alias is called "AES" and is part of "ALL".)
5666 [Ben Laurie, Steve Henson, Bodo Moeller]
5668 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
5669 request to response.
5672 *) Functions for OCSP responders. OCSP_request_onereq_count(),
5673 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
5674 extract information from a certificate request. OCSP_response_create()
5675 creates a response and optionally adds a basic response structure.
5676 OCSP_basic_add1_status() adds a complete single response to a basic
5677 response and returns the OCSP_SINGLERESP structure just added (to allow
5678 extensions to be included for example). OCSP_basic_add1_cert() adds a
5679 certificate to a basic response and OCSP_basic_sign() signs a basic
5680 response with various flags. New helper functions ASN1_TIME_check()
5681 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
5682 (converts ASN1_TIME to GeneralizedTime).
5685 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
5686 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
5687 structure from a certificate. X509_pubkey_digest() digests the public_key
5688 contents: this is used in various key identifiers.
5691 *) Make sk_sort() tolerate a NULL argument.
5692 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
5694 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
5695 passed by the function are trusted implicitly. If any of them signed the
5696 response then it is assumed to be valid and is not verified.
5699 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
5700 to data. This was previously part of the PKCS7 ASN1 code. This
5701 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
5702 [Steve Henson, reported by Kenneth R. Robinette
5703 <support@securenetterm.com>]
5705 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
5706 routines: without these tracing memory leaks is very painful.
5707 Fix leaks in PKCS12 and PKCS7 routines.
5710 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
5711 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
5712 effectively meant GeneralizedTime would never be used. Now it
5713 is initialised to -1 but X509_time_adj() now has to check the value
5714 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
5715 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
5716 [Steve Henson, reported by Kenneth R. Robinette
5717 <support@securenetterm.com>]
5719 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
5720 result in a zero length in the ASN1_INTEGER structure which was
5721 not consistent with the structure when d2i_ASN1_INTEGER() was used
5722 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
5723 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
5724 where it did not print out a minus for negative ASN1_INTEGER.
5727 *) Add summary printout to ocsp utility. The various functions which
5728 convert status values to strings have been renamed to:
5729 OCSP_response_status_str(), OCSP_cert_status_str() and
5730 OCSP_crl_reason_str() and are no longer static. New options
5731 to verify nonce values and to disable verification. OCSP response
5732 printout format cleaned up.
5735 *) Add additional OCSP certificate checks. These are those specified
5736 in RFC2560. This consists of two separate checks: the CA of the
5737 certificate being checked must either be the OCSP signer certificate
5738 or the issuer of the OCSP signer certificate. In the latter case the
5739 OCSP signer certificate must contain the OCSP signing extended key
5740 usage. This check is performed by attempting to match the OCSP
5741 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
5742 in the OCSP_CERTID structures of the response.
5745 *) Initial OCSP certificate verification added to OCSP_basic_verify()
5746 and related routines. This uses the standard OpenSSL certificate
5747 verify routines to perform initial checks (just CA validity) and
5748 to obtain the certificate chain. Then additional checks will be
5749 performed on the chain. Currently the root CA is checked to see
5750 if it is explicitly trusted for OCSP signing. This is used to set
5751 a root CA as a global signing root: that is any certificate that
5752 chains to that CA is an acceptable OCSP signing certificate.
5755 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
5756 extensions from a separate configuration file.
5757 As when reading extensions from the main configuration file,
5758 the '-extensions ...' option may be used for specifying the
5760 [Massimiliano Pala <madwolf@comune.modena.it>]
5762 *) New OCSP utility. Allows OCSP requests to be generated or
5763 read. The request can be sent to a responder and the output
5764 parsed, outputed or printed in text form. Not complete yet:
5765 still needs to check the OCSP response validity.
5768 *) New subcommands for 'openssl ca':
5769 'openssl ca -status <serial>' prints the status of the cert with
5770 the given serial number (according to the index file).
5771 'openssl ca -updatedb' updates the expiry status of certificates
5773 [Massimiliano Pala <madwolf@comune.modena.it>]
5775 *) New '-newreq-nodes' command option to CA.pl. This is like
5776 '-newreq', but calls 'openssl req' with the '-nodes' option
5777 so that the resulting key is not encrypted.
5778 [Damien Miller <djm@mindrot.org>]
5780 *) New configuration for the GNU Hurd.
5781 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
5783 *) Initial code to implement OCSP basic response verify. This
5784 is currently incomplete. Currently just finds the signer's
5785 certificate and verifies the signature on the response.
5788 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
5789 value of OPENSSLDIR. This is available via the new '-d' option
5790 to 'openssl version', and is also included in 'openssl version -a'.
5793 *) Allowing defining memory allocation callbacks that will be given
5794 file name and line number information in additional arguments
5795 (a const char* and an int). The basic functionality remains, as
5796 well as the original possibility to just replace malloc(),
5797 realloc() and free() by functions that do not know about these
5798 additional arguments. To register and find out the current
5799 settings for extended allocation functions, the following
5800 functions are provided:
5802 CRYPTO_set_mem_ex_functions
5803 CRYPTO_set_locked_mem_ex_functions
5804 CRYPTO_get_mem_ex_functions
5805 CRYPTO_get_locked_mem_ex_functions
5807 These work the same way as CRYPTO_set_mem_functions and friends.
5808 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
5809 extended allocation function is enabled.
5810 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
5811 a conventional allocation function is enabled.
5812 [Richard Levitte, Bodo Moeller]
5814 *) Finish off removing the remaining LHASH function pointer casts.
5815 There should no longer be any prototype-casting required when using
5816 the LHASH abstraction, and any casts that remain are "bugs". See
5817 the callback types and macros at the head of lhash.h for details
5818 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
5821 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
5822 If /dev/[u]random devices are not available or do not return enough
5823 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
5825 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
5826 /etc/entropy will be queried once each in this sequence, quering stops
5827 when enough entropy was collected without querying more sockets.
5830 *) Change the Unix RAND_poll() variant to be able to poll several
5831 random devices, as specified by DEVRANDOM, until a sufficient amount
5832 of data has been collected. We spend at most 10 ms on each file
5833 (select timeout) and read in non-blocking mode. DEVRANDOM now
5834 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
5835 (previously it was just the string "/dev/urandom"), so on typical
5836 platforms the 10 ms delay will never occur.
5837 Also separate out the Unix variant to its own file, rand_unix.c.
5838 For VMS, there's a currently-empty rand_vms.c.
5841 *) Move OCSP client related routines to ocsp_cl.c. These
5842 provide utility functions which an application needing
5843 to issue a request to an OCSP responder and analyse the
5844 response will typically need: as opposed to those which an
5845 OCSP responder itself would need which will be added later.
5847 OCSP_request_sign() signs an OCSP request with an API similar
5848 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
5849 response. OCSP_response_get1_basic() extracts basic response
5850 from response. OCSP_resp_find_status(): finds and extracts status
5851 information from an OCSP_CERTID structure (which will be created
5852 when the request structure is built). These are built from lower
5853 level functions which work on OCSP_SINGLERESP structures but
5854 wont normally be used unless the application wishes to examine
5855 extensions in the OCSP response for example.
5857 Replace nonce routines with a pair of functions.
5858 OCSP_request_add1_nonce() adds a nonce value and optionally
5859 generates a random value. OCSP_check_nonce() checks the
5860 validity of the nonce in an OCSP response.
5863 *) Change function OCSP_request_add() to OCSP_request_add0_id().
5864 This doesn't copy the supplied OCSP_CERTID and avoids the
5865 need to free up the newly created id. Change return type
5866 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
5867 This can then be used to add extensions to the request.
5868 Deleted OCSP_request_new(), since most of its functionality
5869 is now in OCSP_REQUEST_new() (and the case insensitive name
5870 clash) apart from the ability to set the request name which
5871 will be added elsewhere.
5874 *) Update OCSP API. Remove obsolete extensions argument from
5875 various functions. Extensions are now handled using the new
5876 OCSP extension code. New simple OCSP HTTP function which
5877 can be used to send requests and parse the response.
5880 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
5881 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
5882 uses the special reorder version of SET OF to sort the attributes
5883 and reorder them to match the encoded order. This resolves a long
5884 standing problem: a verify on a PKCS7 structure just after signing
5885 it used to fail because the attribute order did not match the
5886 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
5887 it uses the received order. This is necessary to tolerate some broken
5888 software that does not order SET OF. This is handled by encoding
5889 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
5890 to produce the required SET OF.
5893 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
5894 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
5895 files to get correct declarations of the ASN.1 item variables.
5898 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
5899 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
5900 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
5901 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
5902 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
5903 ASN1_ITEM and no wrapper functions.
5906 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
5907 replace the old function pointer based I/O routines. Change most of
5908 the *_d2i_bio() and *_d2i_fp() functions to use these.
5911 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
5912 lines, recognice more "algorithms" that can be deselected, and make
5913 it complain about algorithm deselection that isn't recognised.
5916 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
5917 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
5918 to use new functions. Add NO_ASN1_OLD which can be set to remove
5919 some old style ASN1 functions: this can be used to determine if old
5920 code will still work when these eventually go away.
5923 *) New extension functions for OCSP structures, these follow the
5924 same conventions as certificates and CRLs.
5927 *) New function X509V3_add1_i2d(). This automatically encodes and
5928 adds an extension. Its behaviour can be customised with various
5929 flags to append, replace or delete. Various wrappers added for
5930 certifcates and CRLs.
5933 *) Fix to avoid calling the underlying ASN1 print routine when
5934 an extension cannot be parsed. Correct a typo in the
5935 OCSP_SERVICELOC extension. Tidy up print OCSP format.
5938 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
5939 entries for variables.
5942 *) Add functionality to apps/openssl.c for detecting locking
5943 problems: As the program is single-threaded, all we have
5944 to do is register a locking callback using an array for
5945 storing which locks are currently held by the program.
5948 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
5949 SSL_get_ex_data_X509_STORE_idx(), which is used in
5950 ssl_verify_cert_chain() and thus can be called at any time
5951 during TLS/SSL handshakes so that thread-safety is essential.
5952 Unfortunately, the ex_data design is not at all suited
5953 for multi-threaded use, so it probably should be abolished.
5956 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
5957 [Broadcom, tweaked and integrated by Geoff Thorpe]
5959 *) Move common extension printing code to new function
5960 X509V3_print_extensions(). Reorganise OCSP print routines and
5961 implement some needed OCSP ASN1 functions. Add OCSP extensions.
5964 *) New function X509_signature_print() to remove duplication in some
5968 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
5969 set (this was treated exactly the same as SET OF previously). This
5970 is used to reorder the STACK representing the structure to match the
5971 encoding. This will be used to get round a problem where a PKCS7
5972 structure which was signed could not be verified because the STACK
5973 order did not reflect the encoded order.
5976 *) Reimplement the OCSP ASN1 module using the new code.
5979 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
5980 for its ASN1 operations. The old style function pointers still exist
5981 for now but they will eventually go away.
5984 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
5985 completely replaces the old ASN1 functionality with a table driven
5986 encoder and decoder which interprets an ASN1_ITEM structure describing
5987 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
5988 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
5989 has also been converted to the new form.
5992 *) Change BN_mod_exp_recp so that negative moduli are tolerated
5993 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
5994 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
5995 for negative moduli.
5998 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
5999 of not touching the result's sign bit.
6002 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
6006 *) Changed the LHASH code to use prototypes for callbacks, and created
6007 macros to declare and implement thin (optionally static) functions
6008 that provide type-safety and avoid function pointer casting for the
6009 type-specific callbacks.
6012 *) Added Kerberos Cipher Suites to be used with TLS, as written in
6014 [Veers Staats <staatsvr@asc.hpc.mil>,
6015 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
6017 *) Reformat the FAQ so the different questions and answers can be divided
6018 in sections depending on the subject.
6021 *) Have the zlib compression code load ZLIB.DLL dynamically under
6025 *) New function BN_mod_sqrt for computing square roots modulo a prime
6026 (using the probabilistic Tonelli-Shanks algorithm unless
6027 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
6028 be handled deterministically).
6029 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6031 *) Make BN_mod_inverse faster by explicitly handling small quotients
6032 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
6033 512 bits], about 30% for larger ones [1024 or 2048 bits].)
6036 *) New function BN_kronecker.
6039 *) Fix BN_gcd so that it works on negative inputs; the result is
6040 positive unless both parameters are zero.
6041 Previously something reasonably close to an infinite loop was
6042 possible because numbers could be growing instead of shrinking
6043 in the implementation of Euclid's algorithm.
6046 *) Fix BN_is_word() and BN_is_one() macros to take into account the
6047 sign of the number in question.
6049 Fix BN_is_word(a,w) to work correctly for w == 0.
6051 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
6052 because its test if the absolute value of 'a' equals 'w'.
6053 Note that BN_abs_is_word does *not* handle w == 0 reliably;
6054 it exists mostly for use in the implementations of BN_is_zero(),
6055 BN_is_one(), and BN_is_word().
6058 *) New function BN_swap.
6061 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
6062 the exponentiation functions are more likely to produce reasonable
6063 results on negative inputs.
6066 *) Change BN_mod_mul so that the result is always non-negative.
6067 Previously, it could be negative if one of the factors was negative;
6068 I don't think anyone really wanted that behaviour.
6071 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
6072 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
6073 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
6074 and add new functions:
6083 BN_mod_lshift1_quick
6087 These functions always generate non-negative results.
6089 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
6090 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
6092 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
6093 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
6094 be reduced modulo m.
6095 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6098 The following entry accidentily appeared in the CHANGES file
6099 distributed with OpenSSL 0.9.7. The modifications described in
6100 it do *not* apply to OpenSSL 0.9.7.
6102 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6103 was actually never needed) and in BN_mul(). The removal in BN_mul()
6104 required a small change in bn_mul_part_recursive() and the addition
6105 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6106 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6107 bn_sub_words() and bn_add_words() except they take arrays with
6112 *) In 'openssl passwd', verify passwords read from the terminal
6113 unless the '-salt' option is used (which usually means that
6114 verification would just waste user's time since the resulting
6115 hash is going to be compared with some given password hash)
6116 or the new '-noverify' option is used.
6118 This is an incompatible change, but it does not affect
6119 non-interactive use of 'openssl passwd' (passwords on the command
6120 line, '-stdin' option, '-in ...' option) and thus should not
6124 *) Remove all references to RSAref, since there's no more need for it.
6127 *) Make DSO load along a path given through an environment variable
6128 (SHLIB_PATH) with shl_load().
6131 *) Constify the ENGINE code as a result of BIGNUM constification.
6132 Also constify the RSA code and most things related to it. In a
6133 few places, most notable in the depth of the ASN.1 code, ugly
6134 casts back to non-const were required (to be solved at a later
6138 *) Make it so the openssl application has all engines loaded by default.
6141 *) Constify the BIGNUM routines a little more.
6144 *) Add the following functions:
6146 ENGINE_load_cswift()
6148 ENGINE_load_atalla()
6150 ENGINE_load_builtin_engines()
6152 That way, an application can itself choose if external engines that
6153 are built-in in OpenSSL shall ever be used or not. The benefit is
6154 that applications won't have to be linked with libdl or other dso
6155 libraries unless it's really needed.
6157 Changed 'openssl engine' to load all engines on demand.
6158 Changed the engine header files to avoid the duplication of some
6159 declarations (they differed!).
6162 *) 'openssl engine' can now list capabilities.
6165 *) Better error reporting in 'openssl engine'.
6168 *) Never call load_dh_param(NULL) in s_server.
6171 *) Add engine application. It can currently list engines by name and
6172 identity, and test if they are actually available.
6175 *) Improve RPM specification file by forcing symbolic linking and making
6176 sure the installed documentation is also owned by root.root.
6177 [Damien Miller <djm@mindrot.org>]
6179 *) Give the OpenSSL applications more possibilities to make use of
6180 keys (public as well as private) handled by engines.
6183 *) Add OCSP code that comes from CertCo.
6186 *) Add VMS support for the Rijndael code.
6189 *) Added untested support for Nuron crypto accelerator.
6192 *) Add support for external cryptographic devices. This code was
6193 previously distributed separately as the "engine" branch.
6194 [Geoff Thorpe, Richard Levitte]
6196 *) Rework the filename-translation in the DSO code. It is now possible to
6197 have far greater control over how a "name" is turned into a filename
6198 depending on the operating environment and any oddities about the
6199 different shared library filenames on each system.
6202 *) Support threads on FreeBSD-elf in Configure.
6205 *) Fix for SHA1 assembly problem with MASM: it produces
6206 warnings about corrupt line number information when assembling
6207 with debugging information. This is caused by the overlapping
6209 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
6212 NCONF_get_number() has no error checking at all. As a replacement,
6213 NCONF_get_number_e() is defined (_e for "error checking") and is
6214 promoted strongly. The old NCONF_get_number is kept around for
6215 binary backward compatibility.
6216 Make it possible for methods to load from something other than a BIO,
6217 by providing a function pointer that is given a name instead of a BIO.
6218 For example, this could be used to load configuration data from an
6222 *) Fix for non blocking accept BIOs. Added new I/O special reason
6223 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
6224 with non blocking I/O was not possible because no retry code was
6225 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
6229 *) Added the beginnings of Rijndael support.
6232 *) Fix for bug in DirectoryString mask setting. Add support for
6233 X509_NAME_print_ex() in 'req' and X509_print_ex() function
6234 to allow certificate printing to more controllable, additional
6235 'certopt' option to 'x509' to allow new printing options to be
6239 *) Clean old EAY MD5 hack from e_os.h.
6242 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
6244 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
6245 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
6246 [Joe Orton, Steve Henson]
6248 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
6250 *) Fix additional bug revealed by the NISCC test suite:
6252 Stop bug triggering large recursion when presented with
6253 certain ASN.1 tags (CVE-2003-0851)
6256 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
6258 *) Fix various bugs revealed by running the NISCC test suite:
6260 Stop out of bounds reads in the ASN1 code when presented with
6261 invalid tags (CVE-2003-0543 and CVE-2003-0544).
6263 If verify callback ignores invalid public key errors don't try to check
6264 certificate signature with the NULL public key.
6268 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
6269 if the server requested one: as stated in TLS 1.0 and SSL 3.0
6273 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
6274 extra data after the compression methods not only for TLS 1.0
6275 but also for SSL 3.0 (as required by the specification).
6276 [Bodo Moeller; problem pointed out by Matthias Loepfe]
6278 *) Change X509_certificate_type() to mark the key as exported/exportable
6279 when it's 512 *bits* long, not 512 bytes.
6282 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
6284 *) Countermeasure against the Klima-Pokorny-Rosa extension of
6285 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
6286 a protocol version number mismatch like a decryption error
6287 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
6290 *) Turn on RSA blinding by default in the default implementation
6291 to avoid a timing attack. Applications that don't want it can call
6292 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
6293 They would be ill-advised to do so in most cases.
6294 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
6296 *) Change RSA blinding code so that it works when the PRNG is not
6297 seeded (in this case, the secret RSA exponent is abused as
6298 an unpredictable seed -- if it is not unpredictable, there
6299 is no point in blinding anyway). Make RSA blinding thread-safe
6300 by remembering the creator's thread ID in rsa->blinding and
6301 having all other threads use local one-time blinding factors
6302 (this requires more computation than sharing rsa->blinding, but
6303 avoids excessive locking; and if an RSA object is not shared
6304 between threads, blinding will still be very fast).
6307 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
6309 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
6310 via timing by performing a MAC computation even if incorrrect
6311 block cipher padding has been found. This is a countermeasure
6312 against active attacks where the attacker has to distinguish
6313 between bad padding and a MAC verification error. (CVE-2003-0078)
6315 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
6316 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
6317 Martin Vuagnoux (EPFL, Ilion)]
6319 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
6321 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
6322 memory from it's contents. This is done with a counter that will
6323 place alternating values in each byte. This can be used to solve
6324 two issues: 1) the removal of calls to memset() by highly optimizing
6325 compilers, and 2) cleansing with other values than 0, since those can
6326 be read through on certain media, for example a swap space on disk.
6329 *) Bugfix: client side session caching did not work with external caching,
6330 because the session->cipher setting was not restored when reloading
6331 from the external cache. This problem was masked, when
6332 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
6333 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
6336 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
6337 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
6338 [Zeev Lieber <zeev-l@yahoo.com>]
6340 *) Undo an undocumented change introduced in 0.9.6e which caused
6341 repeated calls to OpenSSL_add_all_ciphers() and
6342 OpenSSL_add_all_digests() to be ignored, even after calling
6346 *) Change the default configuration reader to deal with last line not
6347 being properly terminated.
6350 *) Change X509_NAME_cmp() so it applies the special rules on handling
6351 DN values that are of type PrintableString, as well as RDNs of type
6352 emailAddress where the value has the type ia5String.
6353 [stefank@valicert.com via Richard Levitte]
6355 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
6356 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
6357 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
6358 the bitwise-OR of the two for use by the majority of applications
6359 wanting this behaviour, and update the docs. The documented
6360 behaviour and actual behaviour were inconsistent and had been
6361 changing anyway, so this is more a bug-fix than a behavioural
6363 [Geoff Thorpe, diagnosed by Nadav Har'El]
6365 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
6366 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
6369 *) Fix initialization code race conditions in
6370 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
6371 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
6372 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
6373 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
6374 ssl2_get_cipher_by_char(),
6375 ssl3_get_cipher_by_char().
6376 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
6378 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
6379 the cached sessions are flushed, as the remove_cb() might use ex_data
6380 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
6381 (see [openssl.org #212]).
6382 [Geoff Thorpe, Lutz Jaenicke]
6384 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
6385 length, instead of the encoding length to d2i_ASN1_OBJECT.
6388 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
6390 *) [In 0.9.6g-engine release:]
6391 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
6392 [Lynn Gazis <lgazis@rainbow.com>]
6394 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
6396 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
6397 and get fix the header length calculation.
6398 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
6399 Alon Kantor <alonk@checkpoint.com> (and others),
6402 *) Use proper error handling instead of 'assertions' in buffer
6403 overflow checks added in 0.9.6e. This prevents DoS (the
6404 assertions could call abort()).
6405 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
6407 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
6409 *) Add various sanity checks to asn1_get_length() to reject
6410 the ASN1 length bytes if they exceed sizeof(long), will appear
6411 negative or the content length exceeds the length of the
6413 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
6415 *) Fix cipher selection routines: ciphers without encryption had no flags
6416 for the cipher strength set and where therefore not handled correctly
6417 by the selection routines (PR #130).
6420 *) Fix EVP_dsa_sha macro.
6424 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
6425 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
6426 that was added in OpenSSL 0.9.6d.
6428 As the countermeasure turned out to be incompatible with some
6429 broken SSL implementations, the new option is part of SSL_OP_ALL.
6430 SSL_OP_ALL is usually employed when compatibility with weird SSL
6431 implementations is desired (e.g. '-bugs' option to 's_client' and
6432 's_server'), so the new option is automatically set in many
6436 *) Changes in security patch:
6438 Changes marked "(CHATS)" were sponsored by the Defense Advanced
6439 Research Projects Agency (DARPA) and Air Force Research Laboratory,
6440 Air Force Materiel Command, USAF, under agreement number
6443 *) Add various sanity checks to asn1_get_length() to reject
6444 the ASN1 length bytes if they exceed sizeof(long), will appear
6445 negative or the content length exceeds the length of the
6446 supplied buffer. (CVE-2002-0659)
6447 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
6449 *) Assertions for various potential buffer overflows, not known to
6451 [Ben Laurie (CHATS)]
6453 *) Various temporary buffers to hold ASCII versions of integers were
6454 too small for 64 bit platforms. (CVE-2002-0655)
6455 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
6457 *) Remote buffer overflow in SSL3 protocol - an attacker could
6458 supply an oversized session ID to a client. (CVE-2002-0656)
6459 [Ben Laurie (CHATS)]
6461 *) Remote buffer overflow in SSL2 protocol - an attacker could
6462 supply an oversized client master key. (CVE-2002-0656)
6463 [Ben Laurie (CHATS)]
6465 Changes between 0.9.6c and 0.9.6d [9 May 2002]
6467 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
6468 encoded as NULL) with id-dsa-with-sha1.
6469 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
6471 *) Check various X509_...() return values in apps/req.c.
6472 [Nils Larsch <nla@trustcenter.de>]
6474 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
6475 an end-of-file condition would erronously be flagged, when the CRLF
6476 was just at the end of a processed block. The bug was discovered when
6477 processing data through a buffering memory BIO handing the data to a
6478 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
6479 <ptsekov@syntrex.com> and Nedelcho Stanev.
6482 *) Implement a countermeasure against a vulnerability recently found
6483 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
6484 before application data chunks to avoid the use of known IVs
6485 with data potentially chosen by the attacker.
6488 *) Fix length checks in ssl3_get_client_hello().
6491 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
6492 to prevent ssl3_read_internal() from incorrectly assuming that
6493 ssl3_read_bytes() found application data while handshake
6494 processing was enabled when in fact s->s3->in_read_app_data was
6495 merely automatically cleared during the initial handshake.
6496 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
6498 *) Fix object definitions for Private and Enterprise: they were not
6499 recognized in their shortname (=lowercase) representation. Extend
6500 obj_dat.pl to issue an error when using undefined keywords instead
6501 of silently ignoring the problem (Svenning Sorensen
6502 <sss@sss.dnsalias.net>).
6505 *) Fix DH_generate_parameters() so that it works for 'non-standard'
6506 generators, i.e. generators other than 2 and 5. (Previously, the
6507 code did not properly initialise the 'add' and 'rem' values to
6508 BN_generate_prime().)
6510 In the new general case, we do not insist that 'generator' is
6511 actually a primitive root: This requirement is rather pointless;
6512 a generator of the order-q subgroup is just as good, if not
6516 *) Map new X509 verification errors to alerts. Discovered and submitted by
6517 Tom Wu <tom@arcot.com>.
6520 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
6521 returning non-zero before the data has been completely received
6522 when using non-blocking I/O.
6523 [Bodo Moeller; problem pointed out by John Hughes]
6525 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
6526 [Ben Laurie, Lutz Jaenicke]
6528 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
6529 Yoram Zahavi <YoramZ@gilian.com>).
6532 *) Add information about CygWin 1.3 and on, and preserve proper
6533 configuration for the versions before that.
6534 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
6536 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
6537 check whether we deal with a copy of a session and do not delete from
6538 the cache in this case. Problem reported by "Izhar Shoshani Levi"
6539 <izhar@checkpoint.com>.
6542 *) Do not store session data into the internal session cache, if it
6543 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
6544 flag is set). Proposed by Aslam <aslam@funk.com>.
6547 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
6551 *) [In 0.9.6d-engine release:]
6552 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
6553 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6555 *) Add the configuration target linux-s390x.
6556 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
6558 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
6559 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
6560 variable as an indication that a ClientHello message has been
6561 received. As the flag value will be lost between multiple
6562 invocations of ssl3_accept when using non-blocking I/O, the
6563 function may not be aware that a handshake has actually taken
6564 place, thus preventing a new session from being added to the
6567 To avoid this problem, we now set s->new_session to 2 instead of
6568 using a local variable.
6569 [Lutz Jaenicke, Bodo Moeller]
6571 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
6572 if the SSL_R_LENGTH_MISMATCH error is detected.
6573 [Geoff Thorpe, Bodo Moeller]
6575 *) New 'shared_ldflag' column in Configure platform table.
6578 *) Fix EVP_CIPHER_mode macro.
6579 ["Dan S. Camper" <dan@bti.net>]
6581 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
6582 type, we must throw them away by setting rr->length to 0.
6583 [D P Chang <dpc@qualys.com>]
6585 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
6587 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
6588 <Dominikus.Scherkl@biodata.com>. (The previous implementation
6589 worked incorrectly for those cases where range = 10..._2 and
6590 3*range is two bits longer than range.)
6593 *) Only add signing time to PKCS7 structures if it is not already
6597 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
6598 OBJ_ld_ce should be OBJ_id_ce.
6599 Also some ip-pda OIDs in crypto/objects/objects.txt were
6600 incorrect (cf. RFC 3039).
6601 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
6603 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
6604 returns early because it has nothing to do.
6605 [Andy Schneider <andy.schneider@bjss.co.uk>]
6607 *) [In 0.9.6c-engine release:]
6608 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
6609 [Andy Schneider <andy.schneider@bjss.co.uk>]
6611 *) [In 0.9.6c-engine release:]
6612 Add support for Cryptographic Appliance's keyserver technology.
6613 (Use engine 'keyclient')
6614 [Cryptographic Appliances and Geoff Thorpe]
6616 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
6617 is called via tools/c89.sh because arguments have to be
6618 rearranged (all '-L' options must appear before the first object
6620 [Richard Shapiro <rshapiro@abinitio.com>]
6622 *) [In 0.9.6c-engine release:]
6623 Add support for Broadcom crypto accelerator cards, backported
6625 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
6627 *) [In 0.9.6c-engine release:]
6628 Add support for SureWare crypto accelerator cards from
6629 Baltimore Technologies. (Use engine 'sureware')
6630 [Baltimore Technologies and Mark Cox]
6632 *) [In 0.9.6c-engine release:]
6633 Add support for crypto accelerator cards from Accelerated
6634 Encryption Processing, www.aep.ie. (Use engine 'aep')
6635 [AEP Inc. and Mark Cox]
6637 *) Add a configuration entry for gcc on UnixWare.
6638 [Gary Benson <gbenson@redhat.com>]
6640 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
6641 messages are stored in a single piece (fixed-length part and
6642 variable-length part combined) and fix various bugs found on the way.
6645 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
6646 instead. BIO_gethostbyname() does not know what timeouts are
6647 appropriate, so entries would stay in cache even when they have
6649 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
6651 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
6652 faced with a pathologically small ClientHello fragment that does
6653 not contain client_version: Instead of aborting with an error,
6654 simply choose the highest available protocol version (i.e.,
6655 TLS 1.0 unless it is disabled). In practice, ClientHello
6656 messages are never sent like this, but this change gives us
6657 strictly correct behaviour at least for TLS.
6660 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
6661 never resets s->method to s->ctx->method when called from within
6662 one of the SSL handshake functions.
6663 [Bodo Moeller; problem pointed out by Niko Baric]
6665 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
6666 (sent using the client's version number) if client_version is
6667 smaller than the protocol version in use. Also change
6668 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
6669 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
6670 the client will at least see that alert.
6673 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
6677 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
6678 client receives HelloRequest while in a handshake.
6679 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
6681 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
6682 should end in 'break', not 'goto end' which circuments various
6683 cleanups done in state SSL_ST_OK. But session related stuff
6684 must be disabled for SSL_ST_OK in the case that we just sent a
6687 Also avoid some overhead by not calling ssl_init_wbio_buffer()
6688 before just sending a HelloRequest.
6689 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
6691 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
6692 reveal whether illegal block cipher padding was found or a MAC
6693 verification error occured. (Neither SSLerr() codes nor alerts
6694 are directly visible to potential attackers, but the information
6695 may leak via logfiles.)
6697 Similar changes are not required for the SSL 2.0 implementation
6698 because the number of padding bytes is sent in clear for SSL 2.0,
6699 and the extra bytes are just ignored. However ssl/s2_pkt.c
6700 failed to verify that the purported number of padding bytes is in
6704 *) Add OpenUNIX-8 support including shared libraries
6705 (Boyd Lynn Gerber <gerberb@zenez.com>).
6708 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
6709 'wristwatch attack' using huge encoding parameters (cf.
6710 James H. Manger's CRYPTO 2001 paper). Note that the
6711 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
6712 encoding parameters and hence was not vulnerable.
6715 *) BN_sqr() bug fix.
6716 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
6718 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
6719 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
6720 followed by modular reduction.
6721 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
6723 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
6724 equivalent based on BN_pseudo_rand() instead of BN_rand().
6727 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
6728 This function was broken, as the check for a new client hello message
6729 to handle SGC did not allow these large messages.
6730 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
6733 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
6736 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
6737 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
6740 *) Rework the configuration and shared library support for Tru64 Unix.
6741 The configuration part makes use of modern compiler features and
6742 still retains old compiler behavior for those that run older versions
6743 of the OS. The shared library support part includes a variant that
6744 uses the RPATH feature, and is available through the special
6745 configuration target "alpha-cc-rpath", which will never be selected
6747 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
6749 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
6750 with the same message size as in ssl3_get_certificate_request().
6751 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
6752 messages might inadvertently be reject as too long.
6753 [Petr Lampa <lampa@fee.vutbr.cz>]
6755 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
6758 *) Modified SSL library such that the verify_callback that has been set
6759 specificly for an SSL object with SSL_set_verify() is actually being
6760 used. Before the change, a verify_callback set with this function was
6761 ignored and the verify_callback() set in the SSL_CTX at the time of
6762 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
6763 to allow the necessary settings.
6766 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
6767 explicitly to NULL, as at least on Solaris 8 this seems not always to be
6768 done automatically (in contradiction to the requirements of the C
6769 standard). This made problems when used from OpenSSH.
6772 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
6773 dh->length and always used
6775 BN_rand_range(priv_key, dh->p).
6777 BN_rand_range() is not necessary for Diffie-Hellman, and this
6778 specific range makes Diffie-Hellman unnecessarily inefficient if
6779 dh->length (recommended exponent length) is much smaller than the
6780 length of dh->p. We could use BN_rand_range() if the order of
6781 the subgroup was stored in the DH structure, but we only have
6786 BN_rand(priv_key, l, ...)
6788 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
6794 RSA_eay_public_encrypt
6795 RSA_eay_private_decrypt
6796 RSA_eay_private_encrypt (signing)
6797 RSA_eay_public_decrypt (signature verification)
6799 (default implementations for RSA_public_encrypt,
6800 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
6801 always reject numbers >= n.
6804 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
6805 to synchronize access to 'locking_thread'. This is necessary on
6806 systems where access to 'locking_thread' (an 'unsigned long'
6807 variable) is not atomic.
6810 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
6811 *before* setting the 'crypto_lock_rand' flag. The previous code had
6812 a race condition if 0 is a valid thread ID.
6813 [Travis Vitek <vitek@roguewave.com>]
6815 *) Add support for shared libraries under Irix.
6816 [Albert Chin-A-Young <china@thewrittenword.com>]
6818 *) Add configuration option to build on Linux on both big-endian and
6820 [Ralf Baechle <ralf@uni-koblenz.de>]
6822 *) Add the possibility to create shared libraries on HP-UX.
6825 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
6827 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
6828 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
6829 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
6830 PRNG state recovery was possible based on the output of
6831 one PRNG request appropriately sized to gain knowledge on
6832 'md' followed by enough consecutive 1-byte PRNG requests
6833 to traverse all of 'state'.
6835 1. When updating 'md_local' (the current thread's copy of 'md')
6836 during PRNG output generation, hash all of the previous
6837 'md_local' value, not just the half used for PRNG output.
6839 2. Make the number of bytes from 'state' included into the hash
6840 independent from the number of PRNG bytes requested.
6842 The first measure alone would be sufficient to avoid
6843 Markku-Juhani's attack. (Actually it had never occurred
6844 to me that the half of 'md_local' used for chaining was the
6845 half from which PRNG output bytes were taken -- I had always
6846 assumed that the secret half would be used.) The second
6847 measure makes sure that additional data from 'state' is never
6848 mixed into 'md_local' in small portions; this heuristically
6849 further strengthens the PRNG.
6852 *) Fix crypto/bn/asm/mips3.s.
6855 *) When only the key is given to "enc", the IV is undefined. Print out
6856 an error message in this case.
6859 *) Handle special case when X509_NAME is empty in X509 printing routines.
6862 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
6863 positive and less than q.
6866 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
6867 used: it isn't thread safe and the add_lock_callback should handle
6869 [Paul Rose <Paul.Rose@bridge.com>]
6871 *) Verify that incoming data obeys the block size in
6872 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
6876 [Ulf Möller, Bodo Möller]
6878 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
6879 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
6880 when fixing the server behaviour for backwards-compatible 'client
6881 hello' messages. (Note that the attack is impractical against
6882 SSL 3.0 and TLS 1.0 anyway because length and version checking
6883 means that the probability of guessing a valid ciphertext is
6884 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
6887 Before 0.9.5, the countermeasure (hide the error by generating a
6888 random 'decryption result') did not work properly because
6889 ERR_clear_error() was missing, meaning that SSL_get_error() would
6890 detect the supposedly ignored error.
6892 Both problems are now fixed.
6895 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
6896 (previously it was 1024).
6899 *) Fix for compatibility mode trust settings: ignore trust settings
6900 unless some valid trust or reject settings are present.
6903 *) Fix for blowfish EVP: its a variable length cipher.
6906 *) Fix various bugs related to DSA S/MIME verification. Handle missing
6907 parameters in DSA public key structures and return an error in the
6908 DSA routines if parameters are absent.
6911 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
6912 in the current directory if neither $RANDFILE nor $HOME was set.
6913 RAND_file_name() in 0.9.6a returned NULL in this case. This has
6914 caused some confusion to Windows users who haven't defined $HOME.
6915 Thus RAND_file_name() is changed again: e_os.h can define a
6916 DEFAULT_HOME, which will be used if $HOME is not set.
6917 For Windows, we use "C:"; on other platforms, we still require
6918 environment variables.
6920 *) Move 'if (!initialized) RAND_poll()' into regions protected by
6921 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
6922 having multiple threads call RAND_poll() concurrently.
6925 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
6926 combination of a flag and a thread ID variable.
6927 Otherwise while one thread is in ssleay_rand_bytes (which sets the
6928 flag), *other* threads can enter ssleay_add_bytes without obeying
6929 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
6930 that they do not hold after the first thread unsets add_do_not_lock).
6933 *) Change bctest again: '-x' expressions are not available in all
6937 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
6939 *) Fix a couple of memory leaks in PKCS7_dataDecode()
6940 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
6942 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
6943 the default extension for executables, if any. Also, make the perl
6944 scripts that use symlink() to test if it really exists and use "cp"
6945 if it doesn't. All this made OpenSSL compilable and installable in
6949 *) Fix for asn1_GetSequence() for indefinite length constructed data.
6950 If SEQUENCE is length is indefinite just set c->slen to the total
6951 amount of data available.
6952 [Steve Henson, reported by shige@FreeBSD.org]
6953 [This change does not apply to 0.9.7.]
6955 *) Change bctest to avoid here-documents inside command substitution
6956 (workaround for FreeBSD /bin/sh bug).
6957 For compatibility with Ultrix, avoid shell functions (introduced
6958 in the bctest version that searches along $PATH).
6961 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
6962 with des_encrypt() defined on some operating systems, like Solaris
6966 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
6967 On the Importance of Eliminating Errors in Cryptographic
6968 Computations, J. Cryptology 14 (2001) 2, 101-119,
6969 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
6972 *) MIPS assembler BIGNUM division bug fix.
6975 *) Disabled incorrect Alpha assembler code.
6978 *) Fix PKCS#7 decode routines so they correctly update the length
6979 after reading an EOC for the EXPLICIT tag.
6981 [This change does not apply to 0.9.7.]
6983 *) Fix bug in PKCS#12 key generation routines. This was triggered
6984 if a 3DES key was generated with a 0 initial byte. Include
6985 PKCS12_BROKEN_KEYGEN compilation option to retain the old
6986 (but broken) behaviour.
6989 *) Enhance bctest to search for a working bc along $PATH and print
6991 [Tim Rice <tim@multitalents.net> via Richard Levitte]
6993 *) Fix memory leaks in err.c: free err_data string if necessary;
6994 don't write to the wrong index in ERR_set_error_data.
6997 *) Implement ssl23_peek (analogous to ssl23_read), which previously
7001 *) Replace rdtsc with _emit statements for VC++ version 5.
7002 [Jeremy Cooper <jeremy@baymoo.org>]
7004 *) Make it possible to reuse SSLv2 sessions.
7007 *) In copy_email() check for >= 0 as a return value for
7008 X509_NAME_get_index_by_NID() since 0 is a valid index.
7009 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
7011 *) Avoid coredump with unsupported or invalid public keys by checking if
7012 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
7013 PKCS7_verify() fails with non detached data.
7016 *) Don't use getenv in library functions when run as setuid/setgid.
7017 New function OPENSSL_issetugid().
7020 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
7021 due to incorrect handling of multi-threading:
7023 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
7025 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
7027 3. Count how many times MemCheck_off() has been called so that
7028 nested use can be treated correctly. This also avoids
7029 inband-signalling in the previous code (which relied on the
7030 assumption that thread ID 0 is impossible).
7033 *) Add "-rand" option also to s_client and s_server.
7036 *) Fix CPU detection on Irix 6.x.
7037 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
7038 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7040 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
7043 [This change does not apply to 0.9.7.]
7045 *) Use the cached encoding of an X509_NAME structure rather than
7046 copying it. This is apparently the reason for the libsafe "errors"
7047 but the code is actually correct.
7050 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
7051 Bleichenbacher's DSA attack.
7052 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
7053 to be set and top=0 forces the highest bit to be set; top=-1 is new
7054 and leaves the highest bit random.
7055 [Ulf Moeller, Bodo Moeller]
7057 *) In the NCONF_...-based implementations for CONF_... queries
7058 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
7059 a temporary CONF structure with the data component set to NULL
7060 (which gives segmentation faults in lh_retrieve).
7061 Instead, use NULL for the CONF pointer in CONF_get_string and
7062 CONF_get_number (which may use environment variables) and directly
7063 return NULL from CONF_get_section.
7066 *) Fix potential buffer overrun for EBCDIC.
7069 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
7070 keyUsage if basicConstraints absent for a CA.
7073 *) Make SMIME_write_PKCS7() write mail header values with a format that
7074 is more generally accepted (no spaces before the semicolon), since
7075 some programs can't parse those values properly otherwise. Also make
7076 sure BIO's that break lines after each write do not create invalid
7080 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
7081 macros previously used would not encode an empty SEQUENCE OF
7082 and break the signature.
7084 [This change does not apply to 0.9.7.]
7086 *) Zero the premaster secret after deriving the master secret in
7090 *) Add some EVP_add_digest_alias registrations (as found in
7091 OpenSSL_add_all_digests()) to SSL_library_init()
7092 aka OpenSSL_add_ssl_algorithms(). This provides improved
7093 compatibility with peers using X.509 certificates
7094 with unconventional AlgorithmIdentifier OIDs.
7097 *) Fix for Irix with NO_ASM.
7098 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7100 *) ./config script fixes.
7101 [Ulf Moeller, Richard Levitte]
7103 *) Fix 'openssl passwd -1'.
7106 *) Change PKCS12_key_gen_asc() so it can cope with non null
7107 terminated strings whose length is passed in the passlen
7108 parameter, for example from PEM callbacks. This was done
7109 by adding an extra length parameter to asc2uni().
7110 [Steve Henson, reported by <oddissey@samsung.co.kr>]
7112 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
7113 call failed, free the DSA structure.
7116 *) Fix to uni2asc() to cope with zero length Unicode strings.
7117 These are present in some PKCS#12 files.
7120 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
7121 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
7122 when writing a 32767 byte record.
7123 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
7125 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
7126 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
7128 (RSA objects have a reference count access to which is protected
7129 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
7130 so they are meant to be shared between threads.)
7131 [Bodo Moeller, Geoff Thorpe; original patch submitted by
7132 "Reddie, Steven" <Steven.Reddie@ca.com>]
7134 *) Fix a deadlock in CRYPTO_mem_leaks().
7137 *) Use better test patterns in bntest.
7140 *) rand_win.c fix for Borland C.
7143 *) BN_rshift bugfix for n == 0.
7146 *) Add a 'bctest' script that checks for some known 'bc' bugs
7147 so that 'make test' does not abort just because 'bc' is broken.
7150 *) Store verify_result within SSL_SESSION also for client side to
7151 avoid potential security hole. (Re-used sessions on the client side
7152 always resulted in verify_result==X509_V_OK, not using the original
7153 result of the server certificate verification.)
7156 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
7157 SSL3_RT_APPLICATION_DATA, return 0.
7158 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
7162 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
7163 releases, have been re-implemented by renaming the previous
7164 implementations of ssl2_read and ssl3_read to ssl2_read_internal
7165 and ssl3_read_internal, respectively, and adding 'peek' parameters
7166 to them. The new ssl[23]_{read,peek} functions are calls to
7167 ssl[23]_read_internal with the 'peek' flag set appropriately.
7168 A 'peek' parameter has also been added to ssl3_read_bytes, which
7169 does the actual work for ssl3_read_internal.
7172 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
7173 the method-specific "init()" handler. Also clean up ex_data after
7174 calling the method-specific "finish()" handler. Previously, this was
7175 happening the other way round.
7178 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
7179 The previous value, 12, was not always sufficient for BN_mod_exp().
7182 *) Make sure that shared libraries get the internal name engine with
7183 the full version number and not just 0. This should mark the
7184 shared libraries as not backward compatible. Of course, this should
7185 be changed again when we can guarantee backward binary compatibility.
7188 *) Fix typo in get_cert_by_subject() in by_dir.c
7189 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
7191 *) Rework the system to generate shared libraries:
7193 - Make note of the expected extension for the shared libraries and
7194 if there is a need for symbolic links from for example libcrypto.so.0
7195 to libcrypto.so.0.9.7. There is extended info in Configure for
7198 - Make as few rebuilds of the shared libraries as possible.
7200 - Still avoid linking the OpenSSL programs with the shared libraries.
7202 - When installing, install the shared libraries separately from the
7206 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
7208 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
7209 and not in SSL_clear because the latter is also used by the
7210 accept/connect functions; previously, the settings made by
7211 SSL_set_read_ahead would be lost during the handshake.
7212 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
7214 *) Correct util/mkdef.pl to be selective about disabled algorithms.
7215 Previously, it would create entries for disableed algorithms no
7219 *) Added several new manual pages for SSL_* function.
7222 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
7224 *) In ssl23_get_client_hello, generate an error message when faced
7225 with an initial SSL 3.0/TLS record that is too small to contain the
7226 first two bytes of the ClientHello message, i.e. client_version.
7227 (Note that this is a pathologic case that probably has never happened
7228 in real life.) The previous approach was to use the version number
7229 from the record header as a substitute; but our protocol choice
7230 should not depend on that one because it is not authenticated
7231 by the Finished messages.
7234 *) More robust randomness gathering functions for Windows.
7235 [Jeffrey Altman <jaltman@columbia.edu>]
7237 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
7238 not set then we don't setup the error code for issuer check errors
7239 to avoid possibly overwriting other errors which the callback does
7240 handle. If an application does set the flag then we assume it knows
7241 what it is doing and can handle the new informational codes
7245 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
7246 a general "ANY" type, as such it should be able to decode anything
7247 including tagged types. However it didn't check the class so it would
7248 wrongly interpret tagged types in the same way as their universal
7249 counterpart and unknown types were just rejected. Changed so that the
7250 tagged and unknown types are handled in the same way as a SEQUENCE:
7251 that is the encoding is stored intact. There is also a new type
7252 "V_ASN1_OTHER" which is used when the class is not universal, in this
7253 case we have no idea what the actual type is so we just lump them all
7257 *) On VMS, stdout may very well lead to a file that is written to
7258 in a record-oriented fashion. That means that every write() will
7259 write a separate record, which will be read separately by the
7260 programs trying to read from it. This can be very confusing.
7262 The solution is to put a BIO filter in the way that will buffer
7263 text until a linefeed is reached, and then write everything a
7264 line at a time, so every record written will be an actual line,
7265 not chunks of lines and not (usually doesn't happen, but I've
7266 seen it once) several lines in one record. BIO_f_linebuffer() is
7269 Currently, it's a VMS-only method, because that's where it has
7270 been tested well enough.
7273 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
7274 it can return incorrect results.
7275 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
7276 but it was in 0.9.6-beta[12].)
7279 *) Disable the check for content being present when verifying detached
7280 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
7281 include zero length content when signing messages.
7284 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
7285 BIO_ctrl (for BIO pairs).
7288 *) Add DSO method for VMS.
7291 *) Bug fix: Montgomery multiplication could produce results with the
7295 *) Add RPM specification openssl.spec and modify it to build three
7296 packages. The default package contains applications, application
7297 documentation and run-time libraries. The devel package contains
7298 include files, static libraries and function documentation. The
7299 doc package contains the contents of the doc directory. The original
7300 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
7303 *) Add a large number of documentation files for many SSL routines.
7304 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7306 *) Add a configuration entry for Sony News 4.
7307 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
7309 *) Don't set the two most significant bits to one when generating a
7310 random number < q in the DSA library.
7313 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
7314 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
7315 the underlying transport is blocking) if a handshake took place.
7316 (The default behaviour is needed by applications such as s_client
7317 and s_server that use select() to determine when to use SSL_read;
7318 but for applications that know in advance when to expect data, it
7319 just makes things more complicated.)
7322 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
7326 *) Add a few more EBCDIC conditionals that make `req' and `x509'
7327 work better on such systems.
7328 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7330 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
7331 Update PKCS12_parse() so it copies the friendlyName and the
7332 keyid to the certificates aux info.
7335 *) Fix bug in PKCS7_verify() which caused an infinite loop
7336 if there was more than one signature.
7337 [Sven Uszpelkat <su@celocom.de>]
7339 *) Major change in util/mkdef.pl to include extra information
7340 about each symbol, as well as presentig variables as well
7341 as functions. This change means that there's n more need
7342 to rebuild the .num files when some algorithms are excluded.
7345 *) Allow the verify time to be set by an application,
7346 rather than always using the current time.
7349 *) Phase 2 verify code reorganisation. The certificate
7350 verify code now looks up an issuer certificate by a
7351 number of criteria: subject name, authority key id
7352 and key usage. It also verifies self signed certificates
7353 by the same criteria. The main comparison function is
7354 X509_check_issued() which performs these checks.
7356 Lot of changes were necessary in order to support this
7357 without completely rewriting the lookup code.
7359 Authority and subject key identifier are now cached.
7361 The LHASH 'certs' is X509_STORE has now been replaced
7362 by a STACK_OF(X509_OBJECT). This is mainly because an
7363 LHASH can't store or retrieve multiple objects with
7364 the same hash value.
7366 As a result various functions (which were all internal
7367 use only) have changed to handle the new X509_STORE
7368 structure. This will break anything that messed round
7369 with X509_STORE internally.
7371 The functions X509_STORE_add_cert() now checks for an
7372 exact match, rather than just subject name.
7374 The X509_STORE API doesn't directly support the retrieval
7375 of multiple certificates matching a given criteria, however
7376 this can be worked round by performing a lookup first
7377 (which will fill the cache with candidate certificates)
7378 and then examining the cache for matches. This is probably
7379 the best we can do without throwing out X509_LOOKUP
7380 entirely (maybe later...).
7382 The X509_VERIFY_CTX structure has been enhanced considerably.
7384 All certificate lookup operations now go via a get_issuer()
7385 callback. Although this currently uses an X509_STORE it
7386 can be replaced by custom lookups. This is a simple way
7387 to bypass the X509_STORE hackery necessary to make this
7388 work and makes it possible to use more efficient techniques
7389 in future. A very simple version which uses a simple
7390 STACK for its trusted certificate store is also provided
7391 using X509_STORE_CTX_trusted_stack().
7393 The verify_cb() and verify() callbacks now have equivalents
7394 in the X509_STORE_CTX structure.
7396 X509_STORE_CTX also has a 'flags' field which can be used
7397 to customise the verify behaviour.
7400 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
7401 excludes S/MIME capabilities.
7404 *) When a certificate request is read in keep a copy of the
7405 original encoding of the signed data and use it when outputing
7406 again. Signatures then use the original encoding rather than
7407 a decoded, encoded version which may cause problems if the
7408 request is improperly encoded.
7411 *) For consistency with other BIO_puts implementations, call
7412 buffer_write(b, ...) directly in buffer_puts instead of calling
7415 In BIO_puts, increment b->num_write as in BIO_write.
7416 [Peter.Sylvester@EdelWeb.fr]
7418 *) Fix BN_mul_word for the case where the word is 0. (We have to use
7419 BN_zero, we may not return a BIGNUM with an array consisting of
7423 *) Avoid calling abort() from within the library when problems are
7424 detected, except if preprocessor symbols have been defined
7425 (such as REF_CHECK, BN_DEBUG etc.).
7428 *) New openssl application 'rsautl'. This utility can be
7429 used for low level RSA operations. DER public key
7430 BIO/fp routines also added.
7433 *) New Configure entry and patches for compiling on QNX 4.
7434 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
7436 *) A demo state-machine implementation was sponsored by
7437 Nuron (http://www.nuron.com/) and is now available in
7438 demos/state_machine.
7441 *) New options added to the 'dgst' utility for signature
7442 generation and verification.
7445 *) Unrecognized PKCS#7 content types are now handled via a
7446 catch all ASN1_TYPE structure. This allows unsupported
7447 types to be stored as a "blob" and an application can
7448 encode and decode it manually.
7451 *) Fix various signed/unsigned issues to make a_strex.c
7453 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
7455 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
7456 length if passed a buffer. ASN1_INTEGER_to_BN failed
7457 if passed a NULL BN and its argument was negative.
7458 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
7460 *) Modification to PKCS#7 encoding routines to output definite
7461 length encoding. Since currently the whole structures are in
7462 memory there's not real point in using indefinite length
7463 constructed encoding. However if OpenSSL is compiled with
7464 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
7467 *) Added BIO_vprintf() and BIO_vsnprintf().
7470 *) Added more prefixes to parse for in the the strings written
7471 through a logging bio, to cover all the levels that are available
7472 through syslog. The prefixes are now:
7474 PANIC, EMERG, EMR => LOG_EMERG
7475 ALERT, ALR => LOG_ALERT
7476 CRIT, CRI => LOG_CRIT
7477 ERROR, ERR => LOG_ERR
7478 WARNING, WARN, WAR => LOG_WARNING
7479 NOTICE, NOTE, NOT => LOG_NOTICE
7480 INFO, INF => LOG_INFO
7481 DEBUG, DBG => LOG_DEBUG
7483 and as before, if none of those prefixes are present at the
7484 beginning of the string, LOG_ERR is chosen.
7486 On Win32, the LOG_* levels are mapped according to this:
7488 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
7489 LOG_WARNING => EVENTLOG_WARNING_TYPE
7490 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
7494 *) Made it possible to reconfigure with just the configuration
7495 argument "reconf" or "reconfigure". The command line arguments
7496 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
7497 and are retrieved from there when reconfiguring.
7501 [Assar Westerlund <assar@sics.se>, Richard Levitte]
7503 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
7506 *) The obj_dat.pl script was messing up the sorting of object
7507 names. The reason was that it compared the quoted version
7508 of strings as a result "OCSP" > "OCSP Signing" because
7509 " > SPACE. Changed script to store unquoted versions of
7510 names and add quotes on output. It was also omitting some
7511 names from the lookup table if they were given a default
7512 value (that is if SN is missing it is given the same
7513 value as LN and vice versa), these are now added on the
7514 grounds that if an object has a name we should be able to
7515 look it up. Finally added warning output when duplicate
7516 short or long names are found.
7519 *) Changes needed for Tandem NSK.
7520 [Scott Uroff <scott@xypro.com>]
7522 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
7523 RSA_padding_check_SSLv23(), special padding was never detected
7524 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
7525 version rollback attacks was not effective.
7527 In s23_clnt.c, don't use special rollback-attack detection padding
7528 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
7529 client; similarly, in s23_srvr.c, don't do the rollback check if
7530 SSL 2.0 is the only protocol enabled in the server.
7533 *) Make it possible to get hexdumps of unprintable data with 'openssl
7534 asn1parse'. By implication, the functions ASN1_parse_dump() and
7535 BIO_dump_indent() are added.
7538 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
7539 these print out strings and name structures based on various
7540 flags including RFC2253 support and proper handling of
7541 multibyte characters. Added options to the 'x509' utility
7542 to allow the various flags to be set.
7545 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
7546 Also change the functions X509_cmp_current_time() and
7547 X509_gmtime_adj() work with an ASN1_TIME structure,
7548 this will enable certificates using GeneralizedTime in validity
7549 dates to be checked.
7552 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
7553 negative public key encodings) on by default,
7554 NO_NEG_PUBKEY_BUG can be set to disable it.
7557 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
7558 content octets. An i2c_ASN1_OBJECT is unnecessary because
7559 the encoding can be trivially obtained from the structure.
7562 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
7563 not read locks (CRYPTO_r_[un]lock).
7566 *) A first attempt at creating official support for shared
7567 libraries through configuration. I've kept it so the
7568 default is static libraries only, and the OpenSSL programs
7569 are always statically linked for now, but there are
7570 preparations for dynamic linking in place.
7571 This has been tested on Linux and Tru64.
7574 *) Randomness polling function for Win9x, as described in:
7575 Peter Gutmann, Software Generation of Practically Strong
7579 *) Fix so PRNG is seeded in req if using an already existing
7583 *) New options to smime application. -inform and -outform
7584 allow alternative formats for the S/MIME message including
7585 PEM and DER. The -content option allows the content to be
7586 specified separately. This should allow things like Netscape
7587 form signing output easier to verify.
7590 *) Fix the ASN1 encoding of tags using the 'long form'.
7593 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
7594 STRING types. These convert content octets to and from the
7595 underlying type. The actual tag and length octets are
7596 already assumed to have been read in and checked. These
7597 are needed because all other string types have virtually
7598 identical handling apart from the tag. By having versions
7599 of the ASN1 functions that just operate on content octets
7600 IMPLICIT tagging can be handled properly. It also allows
7601 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
7602 and ASN1_INTEGER are identical apart from the tag.
7605 *) Change the handling of OID objects as follows:
7607 - New object identifiers are inserted in objects.txt, following
7608 the syntax given in objects.README.
7609 - objects.pl is used to process obj_mac.num and create a new
7611 - obj_dat.pl is used to create a new obj_dat.h, using the data in
7614 This is currently kind of a hack, and the perl code in objects.pl
7615 isn't very elegant, but it works as I intended. The simplest way
7616 to check that it worked correctly is to look in obj_dat.h and
7617 check the array nid_objs and make sure the objects haven't moved
7618 around (this is important!). Additions are OK, as well as
7619 consistent name changes.
7622 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
7625 *) Addition of the command line parameter '-rand file' to 'openssl req'.
7626 The given file adds to whatever has already been seeded into the
7627 random pool through the RANDFILE configuration file option or
7628 environment variable, or the default random state file.
7631 *) mkstack.pl now sorts each macro group into lexical order.
7632 Previously the output order depended on the order the files
7633 appeared in the directory, resulting in needless rewriting
7637 *) Patches to make OpenSSL compile under Win32 again. Mostly
7638 work arounds for the VC++ problem that it treats func() as
7639 func(void). Also stripped out the parts of mkdef.pl that
7640 added extra typesafe functions: these no longer exist.
7643 *) Reorganisation of the stack code. The macros are now all
7644 collected in safestack.h . Each macro is defined in terms of
7645 a "stack macro" of the form SKM_<name>(type, a, b). The
7646 DEBUG_SAFESTACK is now handled in terms of function casts,
7647 this has the advantage of retaining type safety without the
7648 use of additional functions. If DEBUG_SAFESTACK is not defined
7649 then the non typesafe macros are used instead. Also modified the
7650 mkstack.pl script to handle the new form. Needs testing to see
7651 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
7652 the default if no major problems. Similar behaviour for ASN1_SET_OF
7653 and PKCS12_STACK_OF.
7656 *) When some versions of IIS use the 'NET' form of private key the
7657 key derivation algorithm is different. Normally MD5(password) is
7658 used as a 128 bit RC4 key. In the modified case
7659 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
7660 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
7661 as the old Netscape_RSA functions except they have an additional
7662 'sgckey' parameter which uses the modified algorithm. Also added
7663 an -sgckey command line option to the rsa utility. Thanks to
7664 Adrian Peck <bertie@ncipher.com> for posting details of the modified
7665 algorithm to openssl-dev.
7668 *) The evp_local.h macros were using 'c.##kname' which resulted in
7669 invalid expansion on some systems (SCO 5.0.5 for example).
7670 Corrected to 'c.kname'.
7671 [Phillip Porch <root@theporch.com>]
7673 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
7674 a STACK of email addresses from a certificate or request, these look
7675 in the subject name and the subject alternative name extensions and
7676 omit any duplicate addresses.
7679 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
7680 This makes DSA verification about 2 % faster.
7683 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
7684 (meaning that now 2^5 values will be precomputed, which is only 4 KB
7685 plus overhead for 1024 bit moduli).
7686 This makes exponentiations about 0.5 % faster for 1024 bit
7687 exponents (as measured by "openssl speed rsa2048").
7690 *) Rename memory handling macros to avoid conflicts with other
7692 Malloc => OPENSSL_malloc
7693 Malloc_locked => OPENSSL_malloc_locked
7694 Realloc => OPENSSL_realloc
7695 Free => OPENSSL_free
7698 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
7699 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
7702 *) CygWin32 support.
7703 [John Jarvie <jjarvie@newsguy.com>]
7705 *) The type-safe stack code has been rejigged. It is now only compiled
7706 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
7707 by default all type-specific stack functions are "#define"d back to
7708 standard stack functions. This results in more streamlined output
7709 but retains the type-safety checking possibilities of the original
7713 *) The STACK code has been cleaned up, and certain type declarations
7714 that didn't make a lot of sense have been brought in line. This has
7715 also involved a cleanup of sorts in safestack.h to more correctly
7716 map type-safe stack functions onto their plain stack counterparts.
7717 This work has also resulted in a variety of "const"ifications of
7718 lots of the code, especially "_cmp" operations which should normally
7719 be prototyped with "const" parameters anyway.
7722 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
7723 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
7724 (The PRNG state consists of two parts, the large pool 'state' and 'md',
7725 where all of 'md' is used each time the PRNG is used, but 'state'
7726 is used only indexed by a cyclic counter. As entropy may not be
7727 well distributed from the beginning, 'md' is important as a
7728 chaining variable. However, the output function chains only half
7729 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
7730 all of 'md', and seeding with STATE_SIZE dummy bytes will result
7731 in all of 'state' being rewritten, with the new values depending
7732 on virtually all of 'md'. This overcomes the 80 bit limitation.)
7735 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
7736 the handshake is continued after ssl_verify_cert_chain();
7737 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
7738 can lead to 'unexplainable' connection aborts later.
7739 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
7741 *) Major EVP API cipher revision.
7742 Add hooks for extra EVP features. This allows various cipher
7743 parameters to be set in the EVP interface. Support added for variable
7744 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
7745 setting of RC2 and RC5 parameters.
7747 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
7750 Remove lots of duplicated code from the EVP library. For example *every*
7751 cipher init() function handles the 'iv' in the same way according to the
7752 cipher mode. They also all do nothing if the 'key' parameter is NULL and
7753 for CFB and OFB modes they zero ctx->num.
7755 New functionality allows removal of S/MIME code RC2 hack.
7757 Most of the routines have the same form and so can be declared in terms
7760 By shifting this to the top level EVP_CipherInit() it can be removed from
7761 all individual ciphers. If the cipher wants to handle IVs or keys
7762 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
7765 Change lots of functions like EVP_EncryptUpdate() to now return a
7766 value: although software versions of the algorithms cannot fail
7767 any installed hardware versions can.
7770 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
7771 this option is set, tolerate broken clients that send the negotiated
7772 protocol version number instead of the requested protocol version
7776 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
7777 i.e. non-zero for export ciphersuites, zero otherwise.
7778 Previous versions had this flag inverted, inconsistent with
7779 rsa_tmp_cb (..._TMP_RSA_CB).
7780 [Bodo Moeller; problem reported by Amit Chopra]
7782 *) Add missing DSA library text string. Work around for some IIS
7783 key files with invalid SEQUENCE encoding.
7786 *) Add a document (doc/standards.txt) that list all kinds of standards
7787 and so on that are implemented in OpenSSL.
7790 *) Enhance c_rehash script. Old version would mishandle certificates
7791 with the same subject name hash and wouldn't handle CRLs at all.
7792 Added -fingerprint option to crl utility, to support new c_rehash
7796 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
7799 *) Fix for SSL server purpose checking. Server checking was
7800 rejecting certificates which had extended key usage present
7801 but no ssl client purpose.
7802 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
7804 *) Make PKCS#12 code work with no password. The PKCS#12 spec
7805 is a little unclear about how a blank password is handled.
7806 Since the password in encoded as a BMPString with terminating
7807 double NULL a zero length password would end up as just the
7808 double NULL. However no password at all is different and is
7809 handled differently in the PKCS#12 key generation code. NS
7810 treats a blank password as zero length. MSIE treats it as no
7811 password on export: but it will try both on import. We now do
7812 the same: PKCS12_parse() tries zero length and no password if
7813 the password is set to "" or NULL (NULL is now a valid password:
7814 it wasn't before) as does the pkcs12 application.
7817 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
7818 perror when PEM_read_bio_X509_REQ fails, the error message must
7819 be obtained from the error queue.
7822 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
7823 it in ERR_remove_state if appropriate, and change ERR_get_state
7824 accordingly to avoid race conditions (this is necessary because
7825 thread_hash is no longer constant once set).
7828 *) Bugfix for linux-elf makefile.one.
7831 *) RSA_get_default_method() will now cause a default
7832 RSA_METHOD to be chosen if one doesn't exist already.
7833 Previously this was only set during a call to RSA_new()
7834 or RSA_new_method(NULL) meaning it was possible for
7835 RSA_get_default_method() to return NULL.
7838 *) Added native name translation to the existing DSO code
7839 that will convert (if the flag to do so is set) filenames
7840 that are sufficiently small and have no path information
7841 into a canonical native form. Eg. "blah" converted to
7842 "libblah.so" or "blah.dll" etc.
7845 *) New function ERR_error_string_n(e, buf, len) which is like
7846 ERR_error_string(e, buf), but writes at most 'len' bytes
7847 including the 0 terminator. For ERR_error_string_n, 'buf'
7849 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
7851 *) CONF library reworked to become more general. A new CONF
7852 configuration file reader "class" is implemented as well as a
7853 new functions (NCONF_*, for "New CONF") to handle it. The now
7854 old CONF_* functions are still there, but are reimplemented to
7855 work in terms of the new functions. Also, a set of functions
7856 to handle the internal storage of the configuration data is
7857 provided to make it easier to write new configuration file
7858 reader "classes" (I can definitely see something reading a
7859 configuration file in XML format, for example), called _CONF_*,
7860 or "the configuration storage API"...
7862 The new configuration file reading functions are:
7864 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
7865 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
7867 NCONF_default, NCONF_WIN32
7869 NCONF_dump_fp, NCONF_dump_bio
7871 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
7872 NCONF_new creates a new CONF object. This works in the same way
7873 as other interfaces in OpenSSL, like the BIO interface.
7874 NCONF_dump_* dump the internal storage of the configuration file,
7875 which is useful for debugging. All other functions take the same
7876 arguments as the old CONF_* functions wth the exception of the
7877 first that must be a `CONF *' instead of a `LHASH *'.
7879 To make it easer to use the new classes with the old CONF_* functions,
7880 the function CONF_set_default_method is provided.
7883 *) Add '-tls1' option to 'openssl ciphers', which was already
7884 mentioned in the documentation but had not been implemented.
7885 (This option is not yet really useful because even the additional
7886 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
7889 *) Initial DSO code added into libcrypto for letting OpenSSL (and
7890 OpenSSL-based applications) load shared libraries and bind to
7891 them in a portable way.
7892 [Geoff Thorpe, with contributions from Richard Levitte]
7894 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
7896 *) Make sure _lrotl and _lrotr are only used with MSVC.
7898 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
7899 (the default implementation of RAND_status).
7901 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
7902 to '-clrext' (= clear extensions), as intended and documented.
7903 [Bodo Moeller; inconsistency pointed out by Michael Attili
7906 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
7907 was larger than the MD block size.
7908 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
7910 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
7911 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
7912 using the passed key: if the passed key was a private key the result
7913 of X509_print(), for example, would be to print out all the private key
7917 *) des_quad_cksum() byte order bug fix.
7918 [Ulf Möller, using the problem description in krb4-0.9.7, where
7919 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
7921 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
7923 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
7925 *) For easily testing in shell scripts whether some command
7926 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
7927 returns with exit code 0 iff no command of the given name is available.
7928 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
7929 the output goes to stdout and nothing is printed to stderr.
7930 Additional arguments are always ignored.
7932 Since for each cipher there is a command of the same name,
7933 the 'no-cipher' compilation switches can be tested this way.
7935 ('openssl no-XXX' is not able to detect pseudo-commands such
7936 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
7939 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
7942 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
7943 is set; it will be thrown away anyway because each handshake creates
7945 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
7946 to parameters -- in previous versions (since OpenSSL 0.9.3) the
7947 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
7948 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
7951 *) New s_client option -ign_eof: EOF at stdin is ignored, and
7952 'Q' and 'R' lose their special meanings (quit/renegotiate).
7953 This is part of what -quiet does; unlike -quiet, -ign_eof
7954 does not suppress any output.
7957 *) Add compatibility options to the purpose and trust code. The
7958 purpose X509_PURPOSE_ANY is "any purpose" which automatically
7959 accepts a certificate or CA, this was the previous behaviour,
7960 with all the associated security issues.
7962 X509_TRUST_COMPAT is the old trust behaviour: only and
7963 automatically trust self signed roots in certificate store. A
7964 new trust setting X509_TRUST_DEFAULT is used to specify that
7965 a purpose has no associated trust setting and it should instead
7966 use the value in the default purpose.
7969 *) Fix the PKCS#8 DSA private key code so it decodes keys again
7970 and fix a memory leak.
7973 *) In util/mkerr.pl (which implements 'make errors'), preserve
7974 reason strings from the previous version of the .c file, as
7975 the default to have only downcase letters (and digits) in
7976 automatically generated reasons codes is not always appropriate.
7979 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
7980 using strerror. Previously, ERR_reason_error_string() returned
7981 library names as reason strings for SYSerr; but SYSerr is a special
7982 case where small numbers are errno values, not library numbers.
7985 *) Add '-dsaparam' option to 'openssl dhparam' application. This
7986 converts DSA parameters into DH parameters. (When creating parameters,
7987 DSA_generate_parameters is used.)
7990 *) Include 'length' (recommended exponent length) in C code generated
7991 by 'openssl dhparam -C'.
7994 *) The second argument to set_label in perlasm was already being used
7995 so couldn't be used as a "file scope" flag. Moved to third argument
7999 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
8000 instead of RAND_bytes for encryption IVs and salts.
8003 *) Include RAND_status() into RAND_METHOD instead of implementing
8004 it only for md_rand.c Otherwise replacing the PRNG by calling
8005 RAND_set_rand_method would be impossible.
8008 *) Don't let DSA_generate_key() enter an infinite loop if the random
8009 number generation fails.
8012 *) New 'rand' application for creating pseudo-random output.
8015 *) Added configuration support for Linux/IA64
8016 [Rolf Haberrecker <rolf@suse.de>]
8018 *) Assembler module support for Mingw32.
8021 *) Shared library support for HPUX (in shlib/).
8022 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
8024 *) Shared library support for Solaris gcc.
8025 [Lutz Behnke <behnke@trustcenter.de>]
8027 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
8029 *) PKCS7_encrypt() was adding text MIME headers twice because they
8030 were added manually and by SMIME_crlf_copy().
8033 *) In bntest.c don't call BN_rand with zero bits argument.
8034 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
8036 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
8037 case was implemented. This caused BN_div_recp() to fail occasionally.
8040 *) Add an optional second argument to the set_label() in the perl
8041 assembly language builder. If this argument exists and is set
8042 to 1 it signals that the assembler should use a symbol whose
8043 scope is the entire file, not just the current function. This
8044 is needed with MASM which uses the format label:: for this scope.
8045 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
8047 *) Change the ASN1 types so they are typedefs by default. Before
8048 almost all types were #define'd to ASN1_STRING which was causing
8049 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
8053 *) Change names of new functions to the new get1/get0 naming
8054 convention: After 'get1', the caller owns a reference count
8055 and has to call ..._free; 'get0' returns a pointer to some
8056 data structure without incrementing reference counters.
8057 (Some of the existing 'get' functions increment a reference
8058 counter, some don't.)
8059 Similarly, 'set1' and 'add1' functions increase reference
8060 counters or duplicate objects.
8063 *) Allow for the possibility of temp RSA key generation failure:
8064 the code used to assume it always worked and crashed on failure.
8067 *) Fix potential buffer overrun problem in BIO_printf().
8068 [Ulf Möller, using public domain code by Patrick Powell; problem
8069 pointed out by David Sacerdote <das33@cornell.edu>]
8071 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
8072 RAND_egd() and RAND_status(). In the command line application,
8073 the EGD socket can be specified like a seed file using RANDFILE
8077 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
8078 Some CAs (e.g. Verisign) distribute certificates in this form.
8081 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
8082 list to exclude them. This means that no special compilation option
8083 is needed to use anonymous DH: it just needs to be included in the
8087 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
8088 EVP_MD_type. The old functionality is available in a new macro called
8089 EVP_MD_md(). Change code that uses it and update docs.
8092 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
8093 where the 'void *' argument is replaced by a function pointer argument.
8094 Previously 'void *' was abused to point to functions, which works on
8095 many platforms, but is not correct. As these functions are usually
8096 called by macros defined in OpenSSL header files, most source code
8097 should work without changes.
8100 *) <openssl/opensslconf.h> (which is created by Configure) now contains
8101 sections with information on -D... compiler switches used for
8102 compiling the library so that applications can see them. To enable
8103 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
8104 must be defined. E.g.,
8105 #define OPENSSL_ALGORITHM_DEFINES
8106 #include <openssl/opensslconf.h>
8107 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
8108 [Richard Levitte, Ulf and Bodo Möller]
8110 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
8114 *) Change the 'other' type in certificate aux info to a STACK_OF
8115 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
8116 the required ASN1 format: arbitrary types determined by an OID.
8119 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
8120 argument to 'req'. This is not because the function is newer or
8121 better than others it just uses the work 'NEW' in the certificate
8122 request header lines. Some software needs this.
8125 *) Reorganise password command line arguments: now passwords can be
8126 obtained from various sources. Delete the PEM_cb function and make
8127 it the default behaviour: i.e. if the callback is NULL and the
8128 usrdata argument is not NULL interpret it as a null terminated pass
8129 phrase. If usrdata and the callback are NULL then the pass phrase
8130 is prompted for as usual.
8133 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
8134 the support is automatically enabled. The resulting binaries will
8135 autodetect the card and use it if present.
8136 [Ben Laurie and Compaq Inc.]
8138 *) Work around for Netscape hang bug. This sends certificate request
8139 and server done in one record. Since this is perfectly legal in the
8140 SSL/TLS protocol it isn't a "bug" option and is on by default. See
8141 the bugs/SSLv3 entry for more info.
8144 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
8147 *) Add -rand argument to smime and pkcs12 applications and read/write
8151 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
8154 *) Add command line password options to the remaining applications.
8157 *) Bug fix for BN_div_recp() for numerators with an even number of
8161 *) More tests in bntest.c, and changed test_bn output.
8164 *) ./config recognizes MacOS X now.
8167 *) Bug fix for BN_div() when the first words of num and divsor are
8168 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
8171 *) Add support for various broken PKCS#8 formats, and command line
8172 options to produce them.
8175 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
8176 get temporary BIGNUMs from a BN_CTX.
8179 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
8183 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
8184 include a #define from the old name to the new. The original intent
8185 was that statically linked binaries could for example just call
8186 SSLeay_add_all_ciphers() to just add ciphers to the table and not
8187 link with digests. This never worked becayse SSLeay_add_all_digests()
8188 and SSLeay_add_all_ciphers() were in the same source file so calling
8189 one would link with the other. They are now in separate source files.
8192 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
8195 *) Use a less unusual form of the Miller-Rabin primality test (it used
8196 a binary algorithm for exponentiation integrated into the Miller-Rabin
8197 loop, our standard modexp algorithms are faster).
8200 *) Support for the EBCDIC character set completed.
8201 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
8203 *) Source code cleanups: use const where appropriate, eliminate casts,
8204 use void * instead of char * in lhash.
8207 *) Bugfix: ssl3_send_server_key_exchange was not restartable
8208 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
8209 this the server could overwrite ephemeral keys that the client
8213 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
8214 using 50 iterations of the Rabin-Miller test.
8216 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
8217 iterations of the Rabin-Miller test as required by the appendix
8218 to FIPS PUB 186[-1]) instead of DSA_is_prime.
8219 As BN_is_prime_fasttest includes trial division, DSA parameter
8220 generation becomes much faster.
8222 This implies a change for the callback functions in DSA_is_prime
8223 and DSA_generate_parameters: The callback function is called once
8224 for each positive witness in the Rabin-Miller test, not just
8225 occasionally in the inner loop; and the parameters to the
8226 callback function now provide an iteration count for the outer
8227 loop rather than for the current invocation of the inner loop.
8228 DSA_generate_parameters additionally can call the callback
8229 function with an 'iteration count' of -1, meaning that a
8230 candidate has passed the trial division test (when q is generated
8231 from an application-provided seed, trial division is skipped).
8234 *) New function BN_is_prime_fasttest that optionally does trial
8235 division before starting the Rabin-Miller test and has
8236 an additional BN_CTX * argument (whereas BN_is_prime always
8237 has to allocate at least one BN_CTX).
8238 'callback(1, -1, cb_arg)' is called when a number has passed the
8239 trial division stage.
8242 *) Fix for bug in CRL encoding. The validity dates weren't being handled
8246 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
8249 *) New function BN_pseudo_rand().
8252 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
8253 bignum version of BN_from_montgomery() with the working code from
8254 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
8258 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
8259 made it impossible to use the same SSL_SESSION data structure in
8260 SSL2 clients in multiple threads.
8263 *) The return value of RAND_load_file() no longer counts bytes obtained
8264 by stat(). RAND_load_file(..., -1) is new and uses the complete file
8265 to seed the PRNG (previously an explicit byte count was required).
8266 [Ulf Möller, Bodo Möller]
8268 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
8269 used (char *) instead of (void *) and had casts all over the place.
8272 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
8275 *) Retain source code compatibility for BN_prime_checks macro:
8276 BN_is_prime(..., BN_prime_checks, ...) now uses
8277 BN_prime_checks_for_size to determine the appropriate number of
8278 Rabin-Miller iterations.
8281 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
8282 DH_CHECK_P_NOT_SAFE_PRIME.
8283 (Check if this is true? OpenPGP calls them "strong".)
8286 *) Merge the functionality of "dh" and "gendh" programs into a new program
8287 "dhparam". The old programs are retained for now but will handle DH keys
8288 (instead of parameters) in future.
8291 *) Make the ciphers, s_server and s_client programs check the return values
8292 when a new cipher list is set.
8295 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
8296 ciphers. Before when the 56bit ciphers were enabled the sorting was
8299 The syntax for the cipher sorting has been extended to support sorting by
8300 cipher-strength (using the strength_bits hard coded in the tables).
8301 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
8303 Fix a bug in the cipher-command parser: when supplying a cipher command
8304 string with an "undefined" symbol (neither command nor alphanumeric
8305 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
8306 an error is flagged.
8308 Due to the strength-sorting extension, the code of the
8309 ssl_create_cipher_list() function was completely rearranged. I hope that
8310 the readability was also increased :-)
8311 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
8313 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
8314 for the first serial number and places 2 in the serial number file. This
8315 avoids problems when the root CA is created with serial number zero and
8316 the first user certificate has the same issuer name and serial number
8320 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
8321 the new code. Add documentation for this stuff.
8324 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
8325 X509_*() to X509at_*() on the grounds that they don't handle X509
8326 structures and behave in an analagous way to the X509v3 functions:
8327 they shouldn't be called directly but wrapper functions should be used
8330 So we also now have some wrapper functions that call the X509at functions
8331 when passed certificate requests. (TO DO: similar things can be done with
8332 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
8333 things. Some of these need some d2i or i2d and print functionality
8334 because they handle more complex structures.)
8337 *) Add missing #ifndefs that caused missing symbols when building libssl
8338 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
8339 NO_RSA in ssl/s2*.c.
8340 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
8342 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
8343 has a return value which indicates the quality of the random data
8344 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
8345 error queue. New function RAND_pseudo_bytes() generates output that is
8346 guaranteed to be unique but not unpredictable. RAND_add is like
8347 RAND_seed, but takes an extra argument for an entropy estimate
8348 (RAND_seed always assumes full entropy).
8351 *) Do more iterations of Rabin-Miller probable prime test (specifically,
8352 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
8353 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
8354 in crypto/bn/bn_prime.c for the complete table). This guarantees a
8355 false-positive rate of at most 2^-80 for random input.
8358 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
8361 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
8362 in the 0.9.5 release), this returns the chain
8363 from an X509_CTX structure with a dup of the stack and all
8364 the X509 reference counts upped: so the stack will exist
8365 after X509_CTX_cleanup() has been called. Modify pkcs12.c
8368 Also make SSL_SESSION_print() print out the verify return
8372 *) Add manpage for the pkcs12 command. Also change the default
8373 behaviour so MAC iteration counts are used unless the new
8374 -nomaciter option is used. This improves file security and
8375 only older versions of MSIE (4.0 for example) need it.
8378 *) Honor the no-xxx Configure options when creating .DEF files.
8381 *) Add PKCS#10 attributes to field table: challengePassword,
8382 unstructuredName and unstructuredAddress. These are taken from
8383 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
8384 international characters are used.
8386 More changes to X509_ATTRIBUTE code: allow the setting of types
8387 based on strings. Remove the 'loc' parameter when adding
8388 attributes because these will be a SET OF encoding which is sorted
8392 *) Initial changes to the 'req' utility to allow request generation
8393 automation. This will allow an application to just generate a template
8394 file containing all the field values and have req construct the
8397 Initial support for X509_ATTRIBUTE handling. Stacks of these are
8398 used all over the place including certificate requests and PKCS#7
8399 structures. They are currently handled manually where necessary with
8400 some primitive wrappers for PKCS#7. The new functions behave in a
8401 manner analogous to the X509 extension functions: they allow
8402 attributes to be looked up by NID and added.
8404 Later something similar to the X509V3 code would be desirable to
8405 automatically handle the encoding, decoding and printing of the
8406 more complex types. The string types like challengePassword can
8407 be handled by the string table functions.
8409 Also modified the multi byte string table handling. Now there is
8410 a 'global mask' which masks out certain types. The table itself
8411 can use the flag STABLE_NO_MASK to ignore the mask setting: this
8412 is useful when for example there is only one permissible type
8413 (as in countryName) and using the mask might result in no valid
8417 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
8418 SSL_get_peer_finished to allow applications to obtain the latest
8419 Finished messages sent to the peer or expected from the peer,
8420 respectively. (SSL_get_peer_finished is usually the Finished message
8421 actually received from the peer, otherwise the protocol will be aborted.)
8423 As the Finished message are message digests of the complete handshake
8424 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
8425 be used for external authentication procedures when the authentication
8426 provided by SSL/TLS is not desired or is not enough.
8429 *) Enhanced support for Alpha Linux is added. Now ./config checks if
8430 the host supports BWX extension and if Compaq C is present on the
8431 $PATH. Just exploiting of the BWX extension results in 20-30%
8432 performance kick for some algorithms, e.g. DES and RC4 to mention
8433 a couple. Compaq C in turn generates ~20% faster code for MD5 and
8437 *) Add support for MS "fast SGC". This is arguably a violation of the
8438 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
8439 weak crypto and after checking the certificate is SGC a second one
8440 with strong crypto. MS SGC stops the first handshake after receiving
8441 the server certificate message and sends a second client hello. Since
8442 a server will typically do all the time consuming operations before
8443 expecting any further messages from the client (server key exchange
8444 is the most expensive) there is little difference between the two.
8446 To get OpenSSL to support MS SGC we have to permit a second client
8447 hello message after we have sent server done. In addition we have to
8448 reset the MAC if we do get this second client hello.
8451 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
8452 if a DER encoded private key is RSA or DSA traditional format. Changed
8453 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
8454 format DER encoded private key. Newer code should use PKCS#8 format which
8455 has the key type encoded in the ASN1 structure. Added DER private key
8456 support to pkcs8 application.
8459 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
8460 ciphersuites has been selected (as required by the SSL 3/TLS 1
8461 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
8462 is set, we interpret this as a request to violate the specification
8463 (the worst that can happen is a handshake failure, and 'correct'
8464 behaviour would result in a handshake failure anyway).
8467 *) In SSL_CTX_add_session, take into account that there might be multiple
8468 SSL_SESSION structures with the same session ID (e.g. when two threads
8469 concurrently obtain them from an external cache).
8470 The internal cache can handle only one SSL_SESSION with a given ID,
8471 so if there's a conflict, we now throw out the old one to achieve
8475 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
8476 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
8477 some routines that use cipher OIDs: some ciphers do not have OIDs
8478 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
8482 *) Simplify the trust setting structure and code. Now we just have
8483 two sequences of OIDs for trusted and rejected settings. These will
8484 typically have values the same as the extended key usage extension
8485 and any application specific purposes.
8487 The trust checking code now has a default behaviour: it will just
8488 check for an object with the same NID as the passed id. Functions can
8489 be provided to override either the default behaviour or the behaviour
8490 for a given id. SSL client, server and email already have functions
8491 in place for compatibility: they check the NID and also return "trusted"
8492 if the certificate is self signed.
8495 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
8496 traditional format into an EVP_PKEY structure.
8499 *) Add a password callback function PEM_cb() which either prompts for
8500 a password if usr_data is NULL or otherwise assumes it is a null
8501 terminated password. Allow passwords to be passed on command line
8502 environment or config files in a few more utilities.
8505 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
8506 keys. Add some short names for PKCS#8 PBE algorithms and allow them
8507 to be specified on the command line for the pkcs8 and pkcs12 utilities.
8508 Update documentation.
8511 *) Support for ASN1 "NULL" type. This could be handled before by using
8512 ASN1_TYPE but there wasn't any function that would try to read a NULL
8513 and produce an error if it couldn't. For compatibility we also have
8514 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
8515 don't allocate anything because they don't need to.
8518 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
8520 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
8522 *) Rebuild of the memory allocation routines used by OpenSSL code and
8523 possibly others as well. The purpose is to make an interface that
8524 provide hooks so anyone can build a separate set of allocation and
8525 deallocation routines to be used by OpenSSL, for example memory
8526 pool implementations, or something else, which was previously hard
8527 since Malloc(), Realloc() and Free() were defined as macros having
8528 the values malloc, realloc and free, respectively (except for Win32
8529 compilations). The same is provided for memory debugging code.
8530 OpenSSL already comes with functionality to find memory leaks, but
8531 this gives people a chance to debug other memory problems.
8533 With these changes, a new set of functions and macros have appeared:
8535 CRYPTO_set_mem_debug_functions() [F]
8536 CRYPTO_get_mem_debug_functions() [F]
8537 CRYPTO_dbg_set_options() [F]
8538 CRYPTO_dbg_get_options() [F]
8539 CRYPTO_malloc_debug_init() [M]
8541 The memory debug functions are NULL by default, unless the library
8542 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
8543 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
8544 gives the standard debugging functions that come with OpenSSL) or
8545 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
8546 provided by the library user) must be used. When the standard
8547 debugging functions are used, CRYPTO_dbg_set_options can be used to
8548 request additional information:
8549 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
8550 the CRYPTO_MDEBUG_xxx macro when compiling the library.
8552 Also, things like CRYPTO_set_mem_functions will always give the
8553 expected result (the new set of functions is used for allocation
8554 and deallocation) at all times, regardless of platform and compiler
8557 To finish it up, some functions that were never use in any other
8558 way than through macros have a new API and new semantic:
8561 CRYPTO_dbg_realloc()
8564 All macros of value have retained their old syntax.
8565 [Richard Levitte and Bodo Moeller]
8567 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
8568 ordering of SMIMECapabilities wasn't in "strength order" and there
8569 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
8573 *) Some ASN1 types with illegal zero length encoding (INTEGER,
8574 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
8575 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
8577 *) Merge in my S/MIME library for OpenSSL. This provides a simple
8578 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
8579 functionality to handle multipart/signed properly) and a utility
8580 called 'smime' to call all this stuff. This is based on code I
8581 originally wrote for Celo who have kindly allowed it to be
8582 included in OpenSSL.
8585 *) Add variants des_set_key_checked and des_set_key_unchecked of
8586 des_set_key (aka des_key_sched). Global variable des_check_key
8587 decides which of these is called by des_set_key; this way
8588 des_check_key behaves as it always did, but applications and
8589 the library itself, which was buggy for des_check_key == 1,
8590 have a cleaner way to pick the version they need.
8593 *) New function PKCS12_newpass() which changes the password of a
8597 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
8598 dynamic mix. In both cases the ids can be used as an index into the
8599 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
8600 functions so they accept a list of the field values and the
8601 application doesn't need to directly manipulate the X509_TRUST
8605 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
8609 *) Modify the way the V3 extension code looks up extensions. This now
8610 works in a similar way to the object code: we have some "standard"
8611 extensions in a static table which is searched with OBJ_bsearch()
8612 and the application can add dynamic ones if needed. The file
8613 crypto/x509v3/ext_dat.h now has the info: this file needs to be
8614 updated whenever a new extension is added to the core code and kept
8615 in ext_nid order. There is a simple program 'tabtest.c' which checks
8616 this. New extensions are not added too often so this file can readily
8617 be maintained manually.
8619 There are two big advantages in doing things this way. The extensions
8620 can be looked up immediately and no longer need to be "added" using
8621 X509V3_add_standard_extensions(): this function now does nothing.
8622 [Side note: I get *lots* of email saying the extension code doesn't
8623 work because people forget to call this function]
8624 Also no dynamic allocation is done unless new extensions are added:
8625 so if we don't add custom extensions there is no need to call
8626 X509V3_EXT_cleanup().
8629 *) Modify enc utility's salting as follows: make salting the default. Add a
8630 magic header, so unsalted files fail gracefully instead of just decrypting
8631 to garbage. This is because not salting is a big security hole, so people
8632 should be discouraged from doing it.
8635 *) Fixes and enhancements to the 'x509' utility. It allowed a message
8636 digest to be passed on the command line but it only used this
8637 parameter when signing a certificate. Modified so all relevant
8638 operations are affected by the digest parameter including the
8639 -fingerprint and -x509toreq options. Also -x509toreq choked if a
8640 DSA key was used because it didn't fix the digest.
8643 *) Initial certificate chain verify code. Currently tests the untrusted
8644 certificates for consistency with the verify purpose (which is set
8645 when the X509_STORE_CTX structure is set up) and checks the pathlength.
8647 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
8648 this is because it will reject chains with invalid extensions whereas
8649 every previous version of OpenSSL and SSLeay made no checks at all.
8651 Trust code: checks the root CA for the relevant trust settings. Trust
8652 settings have an initial value consistent with the verify purpose: e.g.
8653 if the verify purpose is for SSL client use it expects the CA to be
8654 trusted for SSL client use. However the default value can be changed to
8655 permit custom trust settings: one example of this would be to only trust
8656 certificates from a specific "secure" set of CAs.
8658 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
8659 which should be used for version portability: especially since the
8660 verify structure is likely to change more often now.
8662 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
8663 to set them. If not set then assume SSL clients will verify SSL servers
8666 Two new options to the verify program: -untrusted allows a set of
8667 untrusted certificates to be passed in and -purpose which sets the
8668 intended purpose of the certificate. If a purpose is set then the
8669 new chain verify code is used to check extension consistency.
8672 *) Support for the authority information access extension.
8675 *) Modify RSA and DSA PEM read routines to transparently handle
8676 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
8677 public keys in a format compatible with certificate
8678 SubjectPublicKeyInfo structures. Unfortunately there were already
8679 functions called *_PublicKey_* which used various odd formats so
8680 these are retained for compatibility: however the DSA variants were
8681 never in a public release so they have been deleted. Changed dsa/rsa
8682 utilities to handle the new format: note no releases ever handled public
8683 keys so we should be OK.
8685 The primary motivation for this change is to avoid the same fiasco
8686 that dogs private keys: there are several incompatible private key
8687 formats some of which are standard and some OpenSSL specific and
8688 require various evil hacks to allow partial transparent handling and
8689 even then it doesn't work with DER formats. Given the option anything
8690 other than PKCS#8 should be dumped: but the other formats have to
8691 stay in the name of compatibility.
8693 With public keys and the benefit of hindsight one standard format
8694 is used which works with EVP_PKEY, RSA or DSA structures: though
8695 it clearly returns an error if you try to read the wrong kind of key.
8697 Added a -pubkey option to the 'x509' utility to output the public key.
8698 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
8699 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
8700 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
8701 that do the same as the EVP_PKEY_assign_*() except they up the
8702 reference count of the added key (they don't "swallow" the
8706 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
8707 CRLs would fail if the file contained no certificates or no CRLs:
8708 added a new function to read in both types and return the number
8709 read: this means that if none are read it will be an error. The
8710 DER versions of the certificate and CRL reader would always fail
8711 because it isn't possible to mix certificates and CRLs in DER format
8712 without choking one or the other routine. Changed this to just read
8713 a certificate: this is the best we can do. Also modified the code
8714 in apps/verify.c to take notice of return codes: it was previously
8715 attempting to read in certificates from NULL pointers and ignoring
8716 any errors: this is one reason why the cert and CRL reader seemed
8717 to work. It doesn't check return codes from the default certificate
8718 routines: these may well fail if the certificates aren't installed.
8721 *) Code to support otherName option in GeneralName.
8724 *) First update to verify code. Change the verify utility
8725 so it warns if it is passed a self signed certificate:
8726 for consistency with the normal behaviour. X509_verify
8727 has been modified to it will now verify a self signed
8728 certificate if *exactly* the same certificate appears
8729 in the store: it was previously impossible to trust a
8730 single self signed certificate. This means that:
8731 openssl verify ss.pem
8732 now gives a warning about a self signed certificate but
8733 openssl verify -CAfile ss.pem ss.pem
8737 *) For servers, store verify_result in SSL_SESSION data structure
8738 (and add it to external session representation).
8739 This is needed when client certificate verifications fails,
8740 but an application-provided verification callback (set by
8741 SSL_CTX_set_cert_verify_callback) allows accepting the session
8742 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
8743 but returns 1): When the session is reused, we have to set
8744 ssl->verify_result to the appropriate error code to avoid
8746 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
8748 *) Fix a bug in the new PKCS#7 code: it didn't consider the
8749 case in PKCS7_dataInit() where the signed PKCS7 structure
8750 didn't contain any existing data because it was being created.
8751 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
8753 *) Add a salt to the key derivation routines in enc.c. This
8754 forms the first 8 bytes of the encrypted file. Also add a
8755 -S option to allow a salt to be input on the command line.
8758 *) New function X509_cmp(). Oddly enough there wasn't a function
8759 to compare two certificates. We do this by working out the SHA1
8760 hash and comparing that. X509_cmp() will be needed by the trust
8764 *) SSL_get1_session() is like SSL_get_session(), but increments
8765 the reference count in the SSL_SESSION returned.
8766 [Geoff Thorpe <geoff@eu.c2.net>]
8768 *) Fix for 'req': it was adding a null to request attributes.
8769 Also change the X509_LOOKUP and X509_INFO code to handle
8770 certificate auxiliary information.
8773 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
8777 *) Add the possibility to add extra information to the memory leak
8778 detecting output, to form tracebacks, showing from where each
8779 allocation was originated: CRYPTO_push_info("constant string") adds
8780 the string plus current file name and line number to a per-thread
8781 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
8782 is like calling CYRPTO_pop_info() until the stack is empty.
8783 Also updated memory leak detection code to be multi-thread-safe.
8786 *) Add options -text and -noout to pkcs7 utility and delete the
8787 encryption options which never did anything. Update docs.
8790 *) Add options to some of the utilities to allow the pass phrase
8791 to be included on either the command line (not recommended on
8792 OSes like Unix) or read from the environment. Update the
8793 manpages and fix a few bugs.
8796 *) Add a few manpages for some of the openssl commands.
8799 *) Fix the -revoke option in ca. It was freeing up memory twice,
8800 leaking and not finding already revoked certificates.
8803 *) Extensive changes to support certificate auxiliary information.
8804 This involves the use of X509_CERT_AUX structure and X509_AUX
8805 functions. An X509_AUX function such as PEM_read_X509_AUX()
8806 can still read in a certificate file in the usual way but it
8807 will also read in any additional "auxiliary information". By
8808 doing things this way a fair degree of compatibility can be
8809 retained: existing certificates can have this information added
8810 using the new 'x509' options.
8812 Current auxiliary information includes an "alias" and some trust
8813 settings. The trust settings will ultimately be used in enhanced
8814 certificate chain verification routines: currently a certificate
8815 can only be trusted if it is self signed and then it is trusted
8819 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
8820 The problem was that one of the replacement routines had not been working
8821 since SSLeay releases. For now the offending routine has been replaced
8822 with non-optimised assembler. Even so, this now gives around 95%
8823 performance improvement for 1024 bit RSA signs.
8826 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
8827 handling. Most clients have the effective key size in bits equal to
8828 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
8829 A few however don't do this and instead use the size of the decrypted key
8830 to determine the RC2 key length and the AlgorithmIdentifier to determine
8831 the effective key length. In this case the effective key length can still
8832 be 40 bits but the key length can be 168 bits for example. This is fixed
8833 by manually forcing an RC2 key into the EVP_PKEY structure because the
8834 EVP code can't currently handle unusual RC2 key sizes: it always assumes
8835 the key length and effective key length are equal.
8838 *) Add a bunch of functions that should simplify the creation of
8839 X509_NAME structures. Now you should be able to do:
8840 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
8841 and have it automatically work out the correct field type and fill in
8842 the structures. The more adventurous can try:
8843 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
8844 and it will (hopefully) work out the correct multibyte encoding.
8847 *) Change the 'req' utility to use the new field handling and multibyte
8848 copy routines. Before the DN field creation was handled in an ad hoc
8849 way in req, ca, and x509 which was rather broken and didn't support
8850 BMPStrings or UTF8Strings. Since some software doesn't implement
8851 BMPStrings or UTF8Strings yet, they can be enabled using the config file
8852 using the dirstring_type option. See the new comment in the default
8853 openssl.cnf for more info.
8856 *) Make crypto/rand/md_rand.c more robust:
8857 - Assure unique random numbers after fork().
8858 - Make sure that concurrent threads access the global counter and
8859 md serializably so that we never lose entropy in them
8860 or use exactly the same state in multiple threads.
8861 Access to the large state is not always serializable because
8862 the additional locking could be a performance killer, and
8863 md should be large enough anyway.
8866 *) New file apps/app_rand.c with commonly needed functionality
8867 for handling the random seed file.
8869 Use the random seed file in some applications that previously did not:
8871 dsaparam -genkey (which also ignored its '-rand' option),
8874 x509 (when signing).
8875 Except on systems with /dev/urandom, it is crucial to have a random
8876 seed file at least for key creation, DSA signing, and for DH exchanges;
8877 for RSA signatures we could do without one.
8879 gendh and gendsa (unlike genrsa) used to read only the first byte
8880 of each file listed in the '-rand' option. The function as previously
8881 found in genrsa is now in app_rand.c and is used by all programs
8882 that support '-rand'.
8885 *) In RAND_write_file, use mode 0600 for creating files;
8886 don't just chmod when it may be too late.
8889 *) Report an error from X509_STORE_load_locations
8890 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
8893 *) New function ASN1_mbstring_copy() this copies a string in either
8894 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
8895 into an ASN1_STRING type. A mask of permissible types is passed
8896 and it chooses the "minimal" type to use or an error if not type
8900 *) Add function equivalents to the various macros in asn1.h. The old
8901 macros are retained with an M_ prefix. Code inside the library can
8902 use the M_ macros. External code (including the openssl utility)
8903 should *NOT* in order to be "shared library friendly".
8906 *) Add various functions that can check a certificate's extensions
8907 to see if it usable for various purposes such as SSL client,
8908 server or S/MIME and CAs of these types. This is currently
8909 VERY EXPERIMENTAL but will ultimately be used for certificate chain
8910 verification. Also added a -purpose flag to x509 utility to
8911 print out all the purposes.
8914 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
8918 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
8919 for, obtain and decode and extension and obtain its critical flag.
8920 This allows all the necessary extension code to be handled in a
8921 single function call.
8924 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
8925 platforms. See crypto/rc4/rc4_enc.c for further details.
8928 *) New -noout option to asn1parse. This causes no output to be produced
8929 its main use is when combined with -strparse and -out to extract data
8930 from a file (which may not be in ASN.1 format).
8933 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
8934 when producing the local key id.
8935 [Richard Levitte <levitte@stacken.kth.se>]
8937 *) New option -dhparam in s_server. This allows a DH parameter file to be
8938 stated explicitly. If it is not stated then it tries the first server
8939 certificate file. The previous behaviour hard coded the filename
8943 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
8944 a public key to be input or output. For example:
8945 openssl rsa -in key.pem -pubout -out pubkey.pem
8946 Also added necessary DSA public key functions to handle this.
8949 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
8950 in the message. This was handled by allowing
8951 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
8952 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
8954 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
8955 to the end of the strings whereas this didn't. This would cause problems
8956 if strings read with d2i_ASN1_bytes() were later modified.
8957 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
8959 *) Fix for base64 decode bug. When a base64 bio reads only one line of
8960 data and it contains EOF it will end up returning an error. This is
8961 caused by input 46 bytes long. The cause is due to the way base64
8962 BIOs find the start of base64 encoded data. They do this by trying a
8963 trial decode on each line until they find one that works. When they
8964 do a flag is set and it starts again knowing it can pass all the
8965 data directly through the decoder. Unfortunately it doesn't reset
8966 the context it uses. This means that if EOF is reached an attempt
8967 is made to pass two EOFs through the context and this causes the
8968 resulting error. This can also cause other problems as well. As is
8969 usual with these problems it takes *ages* to find and the fix is
8970 trivial: move one line.
8971 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
8973 *) Ugly workaround to get s_client and s_server working under Windows. The
8974 old code wouldn't work because it needed to select() on sockets and the
8975 tty (for keypresses and to see if data could be written). Win32 only
8976 supports select() on sockets so we select() with a 1s timeout on the
8977 sockets and then see if any characters are waiting to be read, if none
8978 are present then we retry, we also assume we can always write data to
8979 the tty. This isn't nice because the code then blocks until we've
8980 received a complete line of data and it is effectively polling the
8981 keyboard at 1s intervals: however it's quite a bit better than not
8982 working at all :-) A dedicated Windows application might handle this
8983 with an event loop for example.
8986 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
8987 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
8988 will be called when RSA_sign() and RSA_verify() are used. This is useful
8989 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
8990 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
8991 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
8992 This necessitated the support of an extra signature type NID_md5_sha1
8993 for SSL signatures and modifications to the SSL library to use it instead
8994 of calling RSA_public_decrypt() and RSA_private_encrypt().
8997 *) Add new -verify -CAfile and -CApath options to the crl program, these
8998 will lookup a CRL issuers certificate and verify the signature in a
8999 similar way to the verify program. Tidy up the crl program so it
9000 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
9001 less strict. It will now permit CRL extensions even if it is not
9002 a V2 CRL: this will allow it to tolerate some broken CRLs.
9005 *) Initialize all non-automatic variables each time one of the openssl
9006 sub-programs is started (this is necessary as they may be started
9007 multiple times from the "OpenSSL>" prompt).
9008 [Lennart Bang, Bodo Moeller]
9010 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
9011 removing all other RSA functionality (this is what NO_RSA does). This
9012 is so (for example) those in the US can disable those operations covered
9013 by the RSA patent while allowing storage and parsing of RSA keys and RSA
9017 *) Non-copying interface to BIO pairs.
9018 (still largely untested)
9021 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
9022 ASCII string. This was handled independently in various places before.
9025 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
9026 UTF8 strings a character at a time.
9029 *) Use client_version from client hello to select the protocol
9030 (s23_srvr.c) and for RSA client key exchange verification
9031 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
9034 *) Add various utility functions to handle SPKACs, these were previously
9035 handled by poking round in the structure internals. Added new function
9036 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
9037 print, verify and generate SPKACs. Based on an original idea from
9038 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
9041 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
9044 *) Allow the config file extension section to be overwritten on the
9045 command line. Based on an original idea from Massimiliano Pala
9046 <madwolf@comune.modena.it>. The new option is called -extensions
9047 and can be applied to ca, req and x509. Also -reqexts to override
9048 the request extensions in req and -crlexts to override the crl extensions
9052 *) Add new feature to the SPKAC handling in ca. Now you can include
9053 the same field multiple times by preceding it by "XXXX." for example:
9056 this is the same syntax as used in the req config file.
9059 *) Allow certificate extensions to be added to certificate requests. These
9060 are specified in a 'req_extensions' option of the req section of the
9061 config file. They can be printed out with the -text option to req but
9062 are otherwise ignored at present.
9065 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
9066 data read consists of only the final block it would not decrypted because
9067 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
9068 A misplaced 'break' also meant the decrypted final block might not be
9069 copied until the next read.
9072 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
9073 a few extra parameters to the DH structure: these will be useful if
9074 for example we want the value of 'q' or implement X9.42 DH.
9077 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
9078 provides hooks that allow the default DSA functions or functions on a
9079 "per key" basis to be replaced. This allows hardware acceleration and
9080 hardware key storage to be handled without major modification to the
9081 library. Also added low level modexp hooks and CRYPTO_EX structure and
9082 associated functions.
9085 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
9086 as "read only": it can't be written to and the buffer it points to will
9087 not be freed. Reading from a read only BIO is much more efficient than
9088 a normal memory BIO. This was added because there are several times when
9089 an area of memory needs to be read from a BIO. The previous method was
9090 to create a memory BIO and write the data to it, this results in two
9091 copies of the data and an O(n^2) reading algorithm. There is a new
9092 function BIO_new_mem_buf() which creates a read only memory BIO from
9093 an area of memory. Also modified the PKCS#7 routines to use read only
9097 *) Bugfix: ssl23_get_client_hello did not work properly when called in
9098 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
9099 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
9100 but a retry condition occured while trying to read the rest.
9103 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
9104 NID_pkcs7_encrypted by default: this was wrong since this should almost
9105 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
9106 the encrypted data type: this is a more sensible place to put it and it
9107 allows the PKCS#12 code to be tidied up that duplicated this
9111 *) Changed obj_dat.pl script so it takes its input and output files on
9112 the command line. This should avoid shell escape redirection problems
9116 *) Initial support for certificate extension requests, these are included
9117 in things like Xenroll certificate requests. Included functions to allow
9118 extensions to be obtained and added.
9121 *) -crlf option to s_client and s_server for sending newlines as
9122 CRLF (as required by many protocols).
9125 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
9127 *) Install libRSAglue.a when OpenSSL is built with RSAref.
9128 [Ralf S. Engelschall]
9130 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
9131 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
9133 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
9137 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
9138 DH parameters/keys (q is lost during that conversion, but the resulting
9139 DH parameters contain its length).
9141 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
9142 much faster than DH_generate_parameters (which creates parameters
9143 where p = 2*q + 1), and also the smaller q makes DH computations
9144 much more efficient (160-bit exponentiation instead of 1024-bit
9145 exponentiation); so this provides a convenient way to support DHE
9146 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
9147 utter importance to use
9148 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9150 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9151 when such DH parameters are used, because otherwise small subgroup
9152 attacks may become possible!
9155 *) Avoid memory leak in i2d_DHparams.
9158 *) Allow the -k option to be used more than once in the enc program:
9159 this allows the same encrypted message to be read by multiple recipients.
9162 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
9163 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
9164 it will always use the numerical form of the OID, even if it has a short
9168 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
9169 method only got called if p,q,dmp1,dmq1,iqmp components were present,
9170 otherwise bn_mod_exp was called. In the case of hardware keys for example
9171 no private key components need be present and it might store extra data
9172 in the RSA structure, which cannot be accessed from bn_mod_exp.
9173 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
9174 private key operations.
9177 *) Added support for SPARC Linux.
9180 *) pem_password_cb function type incompatibly changed from
9181 typedef int pem_password_cb(char *buf, int size, int rwflag);
9183 ....(char *buf, int size, int rwflag, void *userdata);
9184 so that applications can pass data to their callbacks:
9185 The PEM[_ASN1]_{read,write}... functions and macros now take an
9186 additional void * argument, which is just handed through whenever
9187 the password callback is called.
9188 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
9190 New function SSL_CTX_set_default_passwd_cb_userdata.
9192 Compatibility note: As many C implementations push function arguments
9193 onto the stack in reverse order, the new library version is likely to
9194 interoperate with programs that have been compiled with the old
9195 pem_password_cb definition (PEM_whatever takes some data that
9196 happens to be on the stack as its last argument, and the callback
9197 just ignores this garbage); but there is no guarantee whatsoever that
9200 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
9201 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
9202 problems not only on Windows, but also on some Unix platforms.
9203 To avoid problematic command lines, these definitions are now in an
9204 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
9205 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
9208 *) MIPS III/IV assembler module is reimplemented.
9211 *) More DES library cleanups: remove references to srand/rand and
9212 delete an unused file.
9215 *) Add support for the the free Netwide assembler (NASM) under Win32,
9216 since not many people have MASM (ml) and it can be hard to obtain.
9217 This is currently experimental but it seems to work OK and pass all
9218 the tests. Check out INSTALL.W32 for info.
9221 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
9222 without temporary keys kept an extra copy of the server key,
9223 and connections with temporary keys did not free everything in case
9227 *) New function RSA_check_key and new openssl rsa option -check
9228 for verifying the consistency of RSA keys.
9229 [Ulf Moeller, Bodo Moeller]
9231 *) Various changes to make Win32 compile work:
9232 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
9233 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
9234 comparison" warnings.
9235 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
9238 *) Add a debugging option to PKCS#5 v2 key generation function: when
9239 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
9240 derived keys are printed to stderr.
9243 *) Copy the flags in ASN1_STRING_dup().
9244 [Roman E. Pavlov <pre@mo.msk.ru>]
9246 *) The x509 application mishandled signing requests containing DSA
9247 keys when the signing key was also DSA and the parameters didn't match.
9249 It was supposed to omit the parameters when they matched the signing key:
9250 the verifying software was then supposed to automatically use the CA's
9251 parameters if they were absent from the end user certificate.
9253 Omitting parameters is no longer recommended. The test was also
9254 the wrong way round! This was probably due to unusual behaviour in
9255 EVP_cmp_parameters() which returns 1 if the parameters match.
9256 This meant that parameters were omitted when they *didn't* match and
9257 the certificate was useless. Certificates signed with 'ca' didn't have
9259 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
9261 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
9262 The interface is as follows:
9263 Applications can use
9264 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
9265 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
9266 "off" is now the default.
9267 The library internally uses
9268 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
9269 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
9270 to disable memory-checking temporarily.
9272 Some inconsistent states that previously were possible (and were
9273 even the default) are now avoided.
9275 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
9276 with each memory chunk allocated; this is occasionally more helpful
9277 than just having a counter.
9279 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
9281 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
9285 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
9286 which largely parallels "options", but is for changing API behaviour,
9287 whereas "options" are about protocol behaviour.
9288 Initial "mode" flags are:
9290 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
9291 a single record has been written.
9292 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
9293 retries use the same buffer location.
9294 (But all of the contents must be
9298 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
9301 *) Fix problems with no-hmac etc.
9302 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
9304 *) New functions RSA_get_default_method(), RSA_set_method() and
9305 RSA_get_method(). These allows replacement of RSA_METHODs without having
9306 to mess around with the internals of an RSA structure.
9309 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
9310 Also really enable memory leak checks in openssl.c and in some
9312 [Chad C. Mulligan, Bodo Moeller]
9314 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
9315 up the length of negative integers. This has now been simplified to just
9316 store the length when it is first determined and use it later, rather
9317 than trying to keep track of where data is copied and updating it to
9319 [Steve Henson, reported by Brien Wheeler
9320 <bwheeler@authentica-security.com>]
9322 *) Add a new function PKCS7_signatureVerify. This allows the verification
9323 of a PKCS#7 signature but with the signing certificate passed to the
9324 function itself. This contrasts with PKCS7_dataVerify which assumes the
9325 certificate is present in the PKCS#7 structure. This isn't always the
9326 case: certificates can be omitted from a PKCS#7 structure and be
9327 distributed by "out of band" means (such as a certificate database).
9330 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
9331 function prototypes in pem.h, also change util/mkdef.pl to add the
9332 necessary function names.
9335 *) mk1mf.pl (used by Windows builds) did not properly read the
9336 options set by Configure in the top level Makefile, and Configure
9337 was not even able to write more than one option correctly.
9338 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
9341 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
9342 file to be loaded from a BIO or FILE pointer. The BIO version will
9343 for example allow memory BIOs to contain config info.
9346 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
9347 Whoever hopes to achieve shared-library compatibility across versions
9348 must use this, not the compile-time macro.
9349 (Exercise 0.9.4: Which is the minimum library version required by
9351 Note: All this applies only to multi-threaded programs, others don't
9355 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
9356 through a BIO pair triggered the default case, i.e.
9357 SSLerr(...,SSL_R_UNKNOWN_STATE).
9360 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
9361 can use the SSL library even if none of the specific BIOs is
9365 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
9366 for the encoded length.
9367 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
9369 *) Add initial documentation of the X509V3 functions.
9372 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
9373 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
9374 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
9375 secure PKCS#8 private key format with a high iteration count.
9378 *) Fix determination of Perl interpreter: A perl or perl5
9379 _directory_ in $PATH was also accepted as the interpreter.
9380 [Ralf S. Engelschall]
9382 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
9383 wrong with it but it was very old and did things like calling
9384 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
9388 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
9389 to use the new extension code.
9392 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
9393 with macros. This should make it easier to change their form, add extra
9394 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
9398 *) Add to configuration table a new entry that can specify an alternative
9399 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
9400 according to Mark Crispin <MRC@Panda.COM>.
9404 *) DES CBC did not update the IV. Weird.
9407 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
9408 Changing the behaviour of the former might break existing programs --
9409 where IV updating is needed, des_ncbc_encrypt can be used.
9412 *) When bntest is run from "make test" it drives bc to check its
9413 calculations, as well as internally checking them. If an internal check
9414 fails, it needs to cause bc to give a non-zero result or make test carries
9415 on without noticing the failure. Fixed.
9418 *) DES library cleanups.
9421 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
9422 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
9423 ciphers. NOTE: although the key derivation function has been verified
9424 against some published test vectors it has not been extensively tested
9425 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
9429 *) Instead of "mkdir -p", which is not fully portable, use new
9430 Perl script "util/mkdir-p.pl".
9433 *) Rewrite the way password based encryption (PBE) is handled. It used to
9434 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
9435 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
9436 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
9437 the 'parameter' field of the AlgorithmIdentifier is passed to the
9438 underlying key generation function so it must do its own ASN1 parsing.
9439 This has also changed the EVP_PBE_CipherInit() function which now has a
9440 'parameter' argument instead of literal salt and iteration count values
9441 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
9444 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
9445 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
9446 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
9447 KEY" because this clashed with PKCS#8 unencrypted string. Since this
9448 value was just used as a "magic string" and not used directly its
9449 value doesn't matter.
9452 *) Introduce some semblance of const correctness to BN. Shame C doesn't
9456 *) "linux-sparc64" configuration (ultrapenguin).
9457 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
9458 "linux-sparc" configuration.
9459 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
9461 *) config now generates no-xxx options for missing ciphers.
9464 *) Support the EBCDIC character set (work in progress).
9465 File ebcdic.c not yet included because it has a different license.
9466 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9468 *) Support BS2000/OSD-POSIX.
9469 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9471 *) Make callbacks for key generation use void * instead of char *.
9474 *) Make S/MIME samples compile (not yet tested).
9477 *) Additional typesafe stacks.
9480 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
9484 Changes between 0.9.3 and 0.9.3a [29 May 1999]
9486 *) New configuration variant "sco5-gcc".
9488 *) Updated some demos.
9489 [Sean O Riordain, Wade Scholine]
9491 *) Add missing BIO_free at exit of pkcs12 application.
9494 *) Fix memory leak in conf.c.
9497 *) Updates for Win32 to assembler version of MD5.
9500 *) Set #! path to perl in apps/der_chop to where we found it
9501 instead of using a fixed path.
9504 *) SHA library changes for irix64-mips4-cc.
9507 *) Improvements for VMS support.
9511 Changes between 0.9.2b and 0.9.3 [24 May 1999]
9513 *) Bignum library bug fix. IRIX 6 passes "make test" now!
9514 This also avoids the problems with SC4.2 and unpatched SC5.
9515 [Andy Polyakov <appro@fy.chalmers.se>]
9517 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
9518 These are required because of the typesafe stack would otherwise break
9519 existing code. If old code used a structure member which used to be STACK
9520 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
9521 sk_num or sk_value it would produce an error because the num, data members
9522 are not present in STACK_OF. Now it just produces a warning. sk_set
9523 replaces the old method of assigning a value to sk_value
9524 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
9525 that does this will no longer work (and should use sk_set instead) but
9526 this could be regarded as a "questionable" behaviour anyway.
9529 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
9530 correctly handle encrypted S/MIME data.
9533 *) Change type of various DES function arguments from des_cblock
9534 (which means, in function argument declarations, pointer to char)
9535 to des_cblock * (meaning pointer to array with 8 char elements),
9536 which allows the compiler to do more typechecking; it was like
9537 that back in SSLeay, but with lots of ugly casts.
9539 Introduce new type const_des_cblock.
9542 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
9543 problems: find RecipientInfo structure that matches recipient certificate
9544 and initialise the ASN1 structures properly based on passed cipher.
9547 *) Belatedly make the BN tests actually check the results.
9550 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
9551 to and from BNs: it was completely broken. New compilation option
9552 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
9553 key elements as negative integers.
9556 *) Reorganize and speed up MD5.
9557 [Andy Polyakov <appro@fy.chalmers.se>]
9560 [Richard Levitte <richard@levitte.org>]
9562 *) New option -out to asn1parse to allow the parsed structure to be
9563 output to a file. This is most useful when combined with the -strparse
9564 option to examine the output of things like OCTET STRINGS.
9567 *) Make SSL library a little more fool-proof by not requiring any longer
9568 that SSL_set_{accept,connect}_state be called before
9569 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
9570 in many applications because usually everything *appeared* to work as
9571 intended anyway -- now it really works as intended).
9574 *) Move openssl.cnf out of lib/.
9577 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
9578 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
9579 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
9580 [Ralf S. Engelschall]
9582 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
9583 handle PKCS#7 enveloped data properly.
9584 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
9586 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
9587 copying pointers. The cert_st handling is changed by this in
9588 various ways (and thus what used to be known as ctx->default_cert
9589 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
9590 any longer when s->cert does not give us what we need).
9591 ssl_cert_instantiate becomes obsolete by this change.
9592 As soon as we've got the new code right (possibly it already is?),
9593 we have solved a couple of bugs of the earlier code where s->cert
9594 was used as if it could not have been shared with other SSL structures.
9596 Note that using the SSL API in certain dirty ways now will result
9597 in different behaviour than observed with earlier library versions:
9598 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
9599 does not influence s as it used to.
9601 In order to clean up things more thoroughly, inside SSL_SESSION
9602 we don't use CERT any longer, but a new structure SESS_CERT
9603 that holds per-session data (if available); currently, this is
9604 the peer's certificate chain and, for clients, the server's certificate
9605 and temporary key. CERT holds only those values that can have
9606 meaningful defaults in an SSL_CTX.
9609 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
9610 from the internal representation. Various PKCS#7 fixes: remove some
9611 evil casts and set the enc_dig_alg field properly based on the signing
9615 *) Allow PKCS#12 password to be set from the command line or the
9616 environment. Let 'ca' get its config file name from the environment
9617 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
9621 *) Allow certificate policies extension to use an IA5STRING for the
9622 organization field. This is contrary to the PKIX definition but
9623 VeriSign uses it and IE5 only recognises this form. Document 'x509'
9627 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
9628 without disallowing inline assembler and the like for non-pedantic builds.
9631 *) Support Borland C++ builder.
9632 [Janez Jere <jj@void.si>, modified by Ulf Möller]
9637 *) SHA-1 cleanups and performance enhancements.
9638 [Andy Polyakov <appro@fy.chalmers.se>]
9640 *) Sparc v8plus assembler for the bignum library.
9641 [Andy Polyakov <appro@fy.chalmers.se>]
9643 *) Accept any -xxx and +xxx compiler options in Configure.
9646 *) Update HPUX configuration.
9649 *) Add missing sk_<type>_unshift() function to safestack.h
9650 [Ralf S. Engelschall]
9652 *) New function SSL_CTX_use_certificate_chain_file that sets the
9653 "extra_cert"s in addition to the certificate. (This makes sense
9654 only for "PEM" format files, as chains as a whole are not
9658 *) Support verify_depth from the SSL API.
9659 x509_vfy.c had what can be considered an off-by-one-error:
9660 Its depth (which was not part of the external interface)
9661 was actually counting the number of certificates in a chain;
9662 now it really counts the depth.
9665 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
9666 instead of X509err, which often resulted in confusing error
9667 messages since the error codes are not globally unique
9668 (e.g. an alleged error in ssl3_accept when a certificate
9669 didn't match the private key).
9671 *) New function SSL_CTX_set_session_id_context that allows to set a default
9672 value (so that you don't need SSL_set_session_id_context for each
9673 connection using the SSL_CTX).
9676 *) OAEP decoding bug fix.
9679 *) Support INSTALL_PREFIX for package builders, as proposed by
9683 *) New Configure options "threads" and "no-threads". For systems
9684 where the proper compiler options are known (currently Solaris
9685 and Linux), "threads" is the default.
9688 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
9691 *) Install various scripts to $(OPENSSLDIR)/misc, not to
9692 $(INSTALLTOP)/bin -- they shouldn't clutter directories
9693 such as /usr/local/bin.
9696 *) "make linux-shared" to build shared libraries.
9697 [Niels Poppe <niels@netbox.org>]
9699 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
9702 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
9703 extension adding in x509 utility.
9706 *) Remove NOPROTO sections and error code comments.
9709 *) Partial rewrite of the DEF file generator to now parse the ANSI
9713 *) New Configure options --prefix=DIR and --openssldir=DIR.
9716 *) Complete rewrite of the error code script(s). It is all now handled
9717 by one script at the top level which handles error code gathering,
9718 header rewriting and C source file generation. It should be much better
9719 than the old method: it now uses a modified version of Ulf's parser to
9720 read the ANSI prototypes in all header files (thus the old K&R definitions
9721 aren't needed for error creation any more) and do a better job of
9722 translating function codes into names. The old 'ASN1 error code imbedded
9723 in a comment' is no longer necessary and it doesn't use .err files which
9724 have now been deleted. Also the error code call doesn't have to appear all
9725 on one line (which resulted in some large lines...).
9728 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
9731 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
9732 0 (which usually indicates a closed connection), but continue reading.
9735 *) Fix some race conditions.
9738 *) Add support for CRL distribution points extension. Add Certificate
9739 Policies and CRL distribution points documentation.
9742 *) Move the autogenerated header file parts to crypto/opensslconf.h.
9745 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
9746 8 of keying material. Merlin has also confirmed interop with this fix
9747 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
9748 [Merlin Hughes <merlin@baltimore.ie>]
9750 *) Fix lots of warnings.
9751 [Richard Levitte <levitte@stacken.kth.se>]
9753 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
9754 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
9755 [Richard Levitte <levitte@stacken.kth.se>]
9757 *) Fix problems with sizeof(long) == 8.
9758 [Andy Polyakov <appro@fy.chalmers.se>]
9760 *) Change functions to ANSI C.
9763 *) Fix typos in error codes.
9764 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
9766 *) Remove defunct assembler files from Configure.
9769 *) SPARC v8 assembler BIGNUM implementation.
9770 [Andy Polyakov <appro@fy.chalmers.se>]
9772 *) Support for Certificate Policies extension: both print and set.
9773 Various additions to support the r2i method this uses.
9776 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
9777 return a const string when you are expecting an allocated buffer.
9780 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
9781 types DirectoryString and DisplayText.
9784 *) Add code to allow r2i extensions to access the configuration database,
9785 add an LHASH database driver and add several ctx helper functions.
9788 *) Fix an evil bug in bn_expand2() which caused various BN functions to
9789 fail when they extended the size of a BIGNUM.
9792 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
9793 support typesafe stack.
9796 *) Fix typo in SSL_[gs]et_options().
9797 [Nils Frostberg <nils@medcom.se>]
9799 *) Delete various functions and files that belonged to the (now obsolete)
9800 old X509V3 handling code.
9803 *) New Configure option "rsaref".
9806 *) Don't auto-generate pem.h.
9809 *) Introduce type-safe ASN.1 SETs.
9812 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
9813 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
9815 *) Introduce type-safe STACKs. This will almost certainly break lots of code
9816 that links with OpenSSL (well at least cause lots of warnings), but fear
9817 not: the conversion is trivial, and it eliminates loads of evil casts. A
9818 few STACKed things have been converted already. Feel free to convert more.
9819 In the fullness of time, I'll do away with the STACK type altogether.
9822 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
9823 specified in <certfile> by updating the entry in the index.txt file.
9824 This way one no longer has to edit the index.txt file manually for
9825 revoking a certificate. The -revoke option does the gory details now.
9826 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
9828 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
9829 `-text' option at all and this way the `-noout -text' combination was
9830 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
9831 [Ralf S. Engelschall]
9833 *) Make sure a corresponding plain text error message exists for the
9834 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
9835 verify callback function determined that a certificate was revoked.
9836 [Ralf S. Engelschall]
9838 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
9839 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
9840 all available cipers including rc5, which was forgotten until now.
9841 In order to let the testing shell script know which algorithms
9842 are available, a new (up to now undocumented) command
9843 "openssl list-cipher-commands" is used.
9846 *) Bugfix: s_client occasionally would sleep in select() when
9847 it should have checked SSL_pending() first.
9850 *) New functions DSA_do_sign and DSA_do_verify to provide access to
9851 the raw DSA values prior to ASN.1 encoding.
9854 *) Tweaks to Configure
9855 [Niels Poppe <niels@netbox.org>]
9857 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
9861 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
9864 *) New config option to avoid instructions that are illegal on the 80386.
9865 The default code is faster, but requires at least a 486.
9868 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
9869 SSL2_SERVER_VERSION (not used at all) macros, which are now the
9870 same as SSL2_VERSION anyway.
9873 *) New "-showcerts" option for s_client.
9876 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
9877 application. Various cleanups and fixes.
9880 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
9881 modify error routines to work internally. Add error codes and PBE init
9882 to library startup routines.
9885 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
9886 packing functions to asn1 and evp. Changed function names and error
9887 codes along the way.
9890 *) PKCS12 integration: and so it begins... First of several patches to
9891 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
9892 objects to objects.h
9895 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
9896 and display support for Thawte strong extranet extension.
9899 *) Add LinuxPPC support.
9900 [Jeff Dubrule <igor@pobox.org>]
9902 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
9903 bn_div_words in alpha.s.
9904 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
9906 *) Make sure the RSA OAEP test is skipped under -DRSAref because
9907 OAEP isn't supported when OpenSSL is built with RSAref.
9908 [Ulf Moeller <ulf@fitug.de>]
9910 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
9911 so they no longer are missing under -DNOPROTO.
9912 [Soren S. Jorvang <soren@t.dk>]
9915 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
9917 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
9918 doesn't work when the session is reused. Coming soon!
9921 *) Fix a security hole, that allows sessions to be reused in the wrong
9922 context thus bypassing client cert protection! All software that uses
9923 client certs and session caches in multiple contexts NEEDS PATCHING to
9924 allow session reuse! A fuller solution is in the works.
9925 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
9927 *) Some more source tree cleanups (removed obsolete files
9928 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
9929 permission on "config" script to be executable) and a fix for the INSTALL
9931 [Ulf Moeller <ulf@fitug.de>]
9933 *) Remove some legacy and erroneous uses of malloc, free instead of
9935 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
9937 *) Make rsa_oaep_test return non-zero on error.
9938 [Ulf Moeller <ulf@fitug.de>]
9940 *) Add support for native Solaris shared libraries. Configure
9941 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
9942 if someone would make that last step automatic.
9943 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
9945 *) ctx_size was not built with the right compiler during "make links". Fixed.
9948 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
9949 except NULL ciphers". This means the default cipher list will no longer
9950 enable NULL ciphers. They need to be specifically enabled e.g. with
9951 the string "DEFAULT:eNULL".
9954 *) Fix to RSA private encryption routines: if p < q then it would
9955 occasionally produce an invalid result. This will only happen with
9956 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
9959 *) Be less restrictive and allow also `perl util/perlpath.pl
9960 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
9961 because this way one can also use an interpreter named `perl5' (which is
9962 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
9963 installed as `perl').
9964 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9966 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
9967 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9969 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
9970 advapi32.lib to Win32 build and change the pem test comparision
9971 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
9972 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
9973 and crypto/des/ede_cbcm_enc.c.
9976 *) DES quad checksum was broken on big-endian architectures. Fixed.
9979 *) Comment out two functions in bio.h that aren't implemented. Fix up the
9980 Win32 test batch file so it (might) work again. The Win32 test batch file
9981 is horrible: I feel ill....
9984 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
9985 in e_os.h. Audit of header files to check ANSI and non ANSI
9986 sections: 10 functions were absent from non ANSI section and not exported
9987 from Windows DLLs. Fixed up libeay.num for new functions.
9990 *) Make `openssl version' output lines consistent.
9991 [Ralf S. Engelschall]
9993 *) Fix Win32 symbol export lists for BIO functions: Added
9994 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
9995 to ms/libeay{16,32}.def.
9996 [Ralf S. Engelschall]
9998 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
9999 fine under Unix and passes some trivial tests I've now added. But the
10000 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
10001 added to make sure no one expects that this stuff really works in the
10002 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
10003 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
10005 [Ralf S. Engelschall]
10007 *) Fix the generation of two part addresses in perl.
10008 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
10010 *) Add config entry for Linux on MIPS.
10011 [John Tobey <jtobey@channel1.com>]
10013 *) Make links whenever Configure is run, unless we are on Windoze.
10016 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
10017 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
10021 *) Add a useful kludge to allow package maintainers to specify compiler and
10022 other platforms details on the command line without having to patch the
10023 Configure script everytime: One now can use ``perl Configure
10024 <id>:<details>'', i.e. platform ids are allowed to have details appended
10025 to them (seperated by colons). This is treated as there would be a static
10026 pre-configured entry in Configure's %table under key <id> with value
10027 <details> and ``perl Configure <id>'' is called. So, when you want to
10028 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
10029 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
10030 now, which overrides the FreeBSD-elf entry on-the-fly.
10031 [Ralf S. Engelschall]
10033 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
10036 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
10037 on the `perl Configure ...' command line. This way one can compile
10038 OpenSSL libraries with Position Independent Code (PIC) which is needed
10039 for linking it into DSOs.
10040 [Ralf S. Engelschall]
10042 *) Remarkably, export ciphers were totally broken and no-one had noticed!
10046 *) Cleaned up the LICENSE document: The official contact for any license
10047 questions now is the OpenSSL core team under openssl-core@openssl.org.
10048 And add a paragraph about the dual-license situation to make sure people
10049 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
10050 to the OpenSSL toolkit.
10051 [Ralf S. Engelschall]
10053 *) General source tree makefile cleanups: Made `making xxx in yyy...'
10054 display consistent in the source tree and replaced `/bin/rm' by `rm'.
10055 Additonally cleaned up the `make links' target: Remove unnecessary
10056 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
10057 to speed processing and no longer clutter the display with confusing
10058 stuff. Instead only the actually done links are displayed.
10059 [Ralf S. Engelschall]
10061 *) Permit null encryption ciphersuites, used for authentication only. It used
10062 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
10063 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
10067 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
10068 signed attributes when verifying signatures (this would break them),
10069 the detached data encoding was wrong and public keys obtained using
10070 X509_get_pubkey() weren't freed.
10073 *) Add text documentation for the BUFFER functions. Also added a work around
10074 to a Win95 console bug. This was triggered by the password read stuff: the
10075 last character typed gets carried over to the next fread(). If you were
10076 generating a new cert request using 'req' for example then the last
10077 character of the passphrase would be CR which would then enter the first
10081 *) Added the new `Includes OpenSSL Cryptography Software' button as
10082 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
10083 button and can be used by applications based on OpenSSL to show the
10084 relationship to the OpenSSL project.
10085 [Ralf S. Engelschall]
10087 *) Remove confusing variables in function signatures in files
10088 ssl/ssl_lib.c and ssl/ssl.h.
10089 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10091 *) Don't install bss_file.c under PREFIX/include/
10092 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10094 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
10095 functions that return function pointers and has support for NT specific
10096 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
10097 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
10098 unsigned to signed types: this was killing the Win32 compile.
10101 *) Add new certificate file to stack functions,
10102 SSL_add_dir_cert_subjects_to_stack() and
10103 SSL_add_file_cert_subjects_to_stack(). These largely supplant
10104 SSL_load_client_CA_file(), and can be used to add multiple certs easily
10105 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
10106 This means that Apache-SSL and similar packages don't have to mess around
10107 to add as many CAs as they want to the preferred list.
10110 *) Experiment with doxygen documentation. Currently only partially applied to
10112 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
10113 openssl.doxy as the configuration file.
10116 *) Get rid of remaining C++-style comments which strict C compilers hate.
10117 [Ralf S. Engelschall, pointed out by Carlos Amengual]
10119 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
10120 compiled in by default: it has problems with large keys.
10123 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
10124 DH private keys and/or callback functions which directly correspond to
10125 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
10126 is needed for applications which have to configure certificates on a
10127 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
10129 For the RSA certificate situation is makes no difference, but
10130 for the DSA certificate situation this fixes the "no shared cipher"
10131 problem where the OpenSSL cipher selection procedure failed because the
10132 temporary keys were not overtaken from the context and the API provided
10133 no way to reconfigure them.
10134 The new functions now let applications reconfigure the stuff and they
10135 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
10136 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
10137 non-public-API function ssl_cert_instantiate() is used as a helper
10138 function and also to reduce code redundancy inside ssl_rsa.c.
10139 [Ralf S. Engelschall]
10141 *) Move s_server -dcert and -dkey options out of the undocumented feature
10142 area because they are useful for the DSA situation and should be
10143 recognized by the users.
10144 [Ralf S. Engelschall]
10146 *) Fix the cipher decision scheme for export ciphers: the export bits are
10147 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
10148 SSL_EXP_MASK. So, the original variable has to be used instead of the
10149 already masked variable.
10150 [Richard Levitte <levitte@stacken.kth.se>]
10152 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
10153 [Richard Levitte <levitte@stacken.kth.se>]
10155 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
10156 from `int' to `unsigned int' because it's a length and initialized by
10157 EVP_DigestFinal() which expects an `unsigned int *'.
10158 [Richard Levitte <levitte@stacken.kth.se>]
10160 *) Don't hard-code path to Perl interpreter on shebang line of Configure
10161 script. Instead use the usual Shell->Perl transition trick.
10162 [Ralf S. Engelschall]
10164 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
10165 (in addition to RSA certificates) to match the behaviour of `openssl dsa
10166 -noout -modulus' as it's already the case for `openssl rsa -noout
10167 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
10168 currently the public key is printed (a decision which was already done by
10169 `openssl dsa -modulus' in the past) which serves a similar purpose.
10170 Additionally the NO_RSA no longer completely removes the whole -modulus
10171 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
10173 [Ralf S. Engelschall]
10175 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
10176 BIO. See the source (crypto/evp/bio_ok.c) for more info.
10177 [Arne Ansper <arne@ats.cyber.ee>]
10179 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
10180 to be added. Now both 'req' and 'ca' can use new objects defined in the
10184 *) Add cool BIO that does syslog (or event log on NT).
10185 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
10187 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
10188 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
10189 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
10190 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
10193 *) Add preliminary config info for new extension code.
10196 *) Make RSA_NO_PADDING really use no padding.
10197 [Ulf Moeller <ulf@fitug.de>]
10199 *) Generate errors when private/public key check is done.
10202 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
10203 for some CRL extensions and new objects added.
10206 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
10207 key usage extension and fuller support for authority key id.
10210 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
10211 padding method for RSA, which is recommended for new applications in PKCS
10212 #1 v2.0 (RFC 2437, October 1998).
10213 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
10214 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
10215 against Bleichbacher's attack on RSA.
10216 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
10219 *) Updates to the new SSL compression code
10220 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10222 *) Fix so that the version number in the master secret, when passed
10223 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
10224 (because the server will not accept higher), that the version number
10225 is 0x03,0x01, not 0x03,0x00
10226 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10228 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
10229 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
10230 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
10233 *) Support for RAW extensions where an arbitrary extension can be
10234 created by including its DER encoding. See apps/openssl.cnf for
10238 *) Make sure latest Perl versions don't interpret some generated C array
10239 code as Perl array code in the crypto/err/err_genc.pl script.
10240 [Lars Weber <3weber@informatik.uni-hamburg.de>]
10242 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
10243 not many people have the assembler. Various Win32 compilation fixes and
10244 update to the INSTALL.W32 file with (hopefully) more accurate Win32
10245 build instructions.
10248 *) Modify configure script 'Configure' to automatically create crypto/date.h
10249 file under Win32 and also build pem.h from pem.org. New script
10250 util/mkfiles.pl to create the MINFO file on environments that can't do a
10251 'make files': perl util/mkfiles.pl >MINFO should work.
10254 *) Major rework of DES function declarations, in the pursuit of correctness
10255 and purity. As a result, many evil casts evaporated, and some weirdness,
10256 too. You may find this causes warnings in your code. Zapping your evil
10257 casts will probably fix them. Mostly.
10260 *) Fix for a typo in asn1.h. Bug fix to object creation script
10261 obj_dat.pl. It considered a zero in an object definition to mean
10262 "end of object": none of the objects in objects.h have any zeros
10263 so it wasn't spotted.
10264 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
10266 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
10267 Masking (CBCM). In the absence of test vectors, the best I have been able
10268 to do is check that the decrypt undoes the encrypt, so far. Send me test
10269 vectors if you have them.
10272 *) Correct calculation of key length for export ciphers (too much space was
10273 allocated for null ciphers). This has not been tested!
10276 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
10277 message is now correct (it understands "crypto" and "ssl" on its
10278 command line). There is also now an "update" option. This will update
10279 the util/ssleay.num and util/libeay.num files with any new functions.
10281 perl util/mkdef.pl crypto ssl update
10282 it will update them.
10285 *) Overhauled the Perl interface (perl/*):
10286 - ported BN stuff to OpenSSL's different BN library
10287 - made the perl/ source tree CVS-aware
10288 - renamed the package from SSLeay to OpenSSL (the files still contain
10289 their history because I've copied them in the repository)
10290 - removed obsolete files (the test scripts will be replaced
10291 by better Test::Harness variants in the future)
10292 [Ralf S. Engelschall]
10294 *) First cut for a very conservative source tree cleanup:
10295 1. merge various obsolete readme texts into doc/ssleay.txt
10296 where we collect the old documents and readme texts.
10297 2. remove the first part of files where I'm already sure that we no
10298 longer need them because of three reasons: either they are just temporary
10299 files which were left by Eric or they are preserved original files where
10300 I've verified that the diff is also available in the CVS via "cvs diff
10301 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
10302 the crypto/md/ stuff).
10303 [Ralf S. Engelschall]
10305 *) More extension code. Incomplete support for subject and issuer alt
10306 name, issuer and authority key id. Change the i2v function parameters
10307 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
10308 what that's for :-) Fix to ASN1 macro which messed up
10309 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
10312 *) Preliminary support for ENUMERATED type. This is largely copied from the
10316 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
10317 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10319 *) Make sure `make rehash' target really finds the `openssl' program.
10320 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10322 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
10323 like to hear about it if this slows down other processors.
10326 *) Add CygWin32 platform information to Configure script.
10327 [Alan Batie <batie@aahz.jf.intel.com>]
10329 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
10330 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
10332 *) New program nseq to manipulate netscape certificate sequences
10335 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
10339 *) Fixes to BN code. Previously the default was to define BN_RECURSION
10340 but the BN code had some problems that would cause failures when
10341 doing certificate verification and some other functions.
10342 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10344 *) Add ASN1 and PEM code to support netscape certificate sequences.
10347 *) Add ASN1 and PEM code to support netscape certificate sequences.
10350 *) Add several PKIX and private extended key usage OIDs.
10353 *) Modify the 'ca' program to handle the new extension code. Modify
10354 openssl.cnf for new extension format, add comments.
10357 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
10358 and add a sample to openssl.cnf so req -x509 now adds appropriate
10362 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
10363 error code, add initial support to X509_print() and x509 application.
10366 *) Takes a deep breath and start addding X509 V3 extension support code. Add
10367 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
10368 stuff is currently isolated and isn't even compiled yet.
10371 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
10372 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
10373 Removed the versions check from X509 routines when loading extensions:
10374 this allows certain broken certificates that don't set the version
10375 properly to be processed.
10378 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
10379 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
10380 can still be regenerated with "make depend".
10383 *) Spelling mistake in C version of CAST-128.
10384 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
10386 *) Changes to the error generation code. The perl script err-code.pl
10387 now reads in the old error codes and retains the old numbers, only
10388 adding new ones if necessary. It also only changes the .err files if new
10389 codes are added. The makefiles have been modified to only insert errors
10390 when needed (to avoid needlessly modifying header files). This is done
10391 by only inserting errors if the .err file is newer than the auto generated
10392 C file. To rebuild all the error codes from scratch (the old behaviour)
10393 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
10394 or delete all the .err files.
10397 *) CAST-128 was incorrectly implemented for short keys. The C version has
10398 been fixed, but is untested. The assembler versions are also fixed, but
10399 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
10400 to regenerate it if needed.
10401 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
10402 Hagino <itojun@kame.net>]
10404 *) File was opened incorrectly in randfile.c.
10405 [Ulf Möller <ulf@fitug.de>]
10407 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
10408 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
10409 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
10410 al: it's just almost always a UTCTime. Note this patch adds new error
10411 codes so do a "make errors" if there are problems.
10414 *) Correct Linux 1 recognition in config.
10415 [Ulf Möller <ulf@fitug.de>]
10417 *) Remove pointless MD5 hash when using DSA keys in ca.
10418 [Anonymous <nobody@replay.com>]
10420 *) Generate an error if given an empty string as a cert directory. Also
10421 generate an error if handed NULL (previously returned 0 to indicate an
10422 error, but didn't set one).
10423 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
10425 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
10428 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
10429 parameters. This was causing a warning which killed off the Win32 compile.
10432 *) Remove C++ style comments from crypto/bn/bn_local.h.
10433 [Neil Costigan <neil.costigan@celocom.com>]
10435 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
10436 based on a text string, looking up short and long names and finally
10437 "dot" format. The "dot" format stuff didn't work. Added new function
10438 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
10439 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
10440 OID is not part of the table.
10443 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
10444 X509_LOOKUP_by_alias().
10447 *) Sort openssl functions by name.
10450 *) Get the gendsa program working (hopefully) and add it to app list. Remove
10451 encryption from sample DSA keys (in case anyone is interested the password
10455 *) Make _all_ *_free functions accept a NULL pointer.
10456 [Frans Heymans <fheymans@isaserver.be>]
10458 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
10460 [Anonymous <nobody@replay.com>]
10462 *) s_server should send the CAfile as acceptable CAs, not its own cert.
10463 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
10465 *) Don't blow it for numeric -newkey arguments to apps/req.
10466 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
10468 *) Temp key "for export" tests were wrong in s3_srvr.c.
10469 [Anonymous <nobody@replay.com>]
10471 *) Add prototype for temp key callback functions
10472 SSL_CTX_set_tmp_{rsa,dh}_callback().
10475 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
10476 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
10479 *) X509_name_add_entry() freed the wrong thing after an error.
10480 [Arne Ansper <arne@ats.cyber.ee>]
10482 *) rsa_eay.c would attempt to free a NULL context.
10483 [Arne Ansper <arne@ats.cyber.ee>]
10485 *) BIO_s_socket() had a broken should_retry() on Windoze.
10486 [Arne Ansper <arne@ats.cyber.ee>]
10488 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
10489 [Arne Ansper <arne@ats.cyber.ee>]
10491 *) Make sure the already existing X509_STORE->depth variable is initialized
10492 in X509_STORE_new(), but document the fact that this variable is still
10493 unused in the certificate verification process.
10494 [Ralf S. Engelschall]
10496 *) Fix the various library and apps files to free up pkeys obtained from
10497 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
10500 *) Fix reference counting in X509_PUBKEY_get(). This makes
10501 demos/maurice/example2.c work, amongst others, probably.
10502 [Steve Henson and Ben Laurie]
10504 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
10505 `openssl' and second, the shortcut symlinks for the `openssl <command>'
10506 are no longer created. This way we have a single and consistent command
10507 line interface `openssl <command>', similar to `cvs <command>'.
10508 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
10510 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
10511 BIT STRING wrapper always have zero unused bits.
10514 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
10517 *) Make the top-level INSTALL documentation easier to understand.
10520 *) Makefiles updated to exit if an error occurs in a sub-directory
10521 make (including if user presses ^C) [Paul Sutton]
10523 *) Make Montgomery context stuff explicit in RSA data structure.
10526 *) Fix build order of pem and err to allow for generated pem.h.
10529 *) Fix renumbering bug in X509_NAME_delete_entry().
10532 *) Enhanced the err-ins.pl script so it makes the error library number
10533 global and can add a library name. This is needed for external ASN1 and
10534 other error libraries.
10537 *) Fixed sk_insert which never worked properly.
10540 *) Fix ASN1 macros so they can handle indefinite length construted
10541 EXPLICIT tags. Some non standard certificates use these: they can now
10545 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
10546 into a single doc/ssleay.txt bundle. This way the information is still
10547 preserved but no longer messes up this directory. Now it's new room for
10548 the new set of documenation files.
10549 [Ralf S. Engelschall]
10551 *) SETs were incorrectly DER encoded. This was a major pain, because they
10552 shared code with SEQUENCEs, which aren't coded the same. This means that
10553 almost everything to do with SETs or SEQUENCEs has either changed name or
10554 number of arguments.
10555 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
10557 *) Fix test data to work with the above.
10560 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
10561 was already fixed by Eric for 0.9.1 it seems.
10562 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
10564 *) Autodetect FreeBSD3.
10567 *) Fix various bugs in Configure. This affects the following platforms:
10571 unixware-2.0-pentium
10575 *) Eliminate generated files from CVS. Reorder tests to regenerate files
10576 before they are needed.
10579 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
10583 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
10585 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
10586 changed SSLeay to OpenSSL in version strings.
10587 [Ralf S. Engelschall]
10589 *) Some fixups to the top-level documents.
10592 *) Fixed the nasty bug where rsaref.h was not found under compile-time
10593 because the symlink to include/ was missing.
10594 [Ralf S. Engelschall]
10596 *) Incorporated the popular no-RSA/DSA-only patches
10597 which allow to compile a RSA-free SSLeay.
10598 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
10600 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
10601 when "ssleay" is still not found.
10602 [Ralf S. Engelschall]
10604 *) Added more platforms to Configure: Cray T3E, HPUX 11,
10605 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
10607 *) Updated the README file.
10608 [Ralf S. Engelschall]
10610 *) Added various .cvsignore files in the CVS repository subdirs
10611 to make a "cvs update" really silent.
10612 [Ralf S. Engelschall]
10614 *) Recompiled the error-definition header files and added
10615 missing symbols to the Win32 linker tables.
10616 [Ralf S. Engelschall]
10618 *) Cleaned up the top-level documents;
10619 o new files: CHANGES and LICENSE
10620 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
10621 o merged COPYRIGHT into LICENSE
10622 o removed obsolete TODO file
10623 o renamed MICROSOFT to INSTALL.W32
10624 [Ralf S. Engelschall]
10626 *) Removed dummy files from the 0.9.1b source tree:
10627 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
10628 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
10629 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
10630 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
10631 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
10632 [Ralf S. Engelschall]
10634 *) Added various platform portability fixes.
10637 *) The Genesis of the OpenSSL rpject:
10638 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
10639 Young and Tim J. Hudson created while they were working for C2Net until
10641 [The OpenSSL Project]
10644 Changes between 0.9.0b and 0.9.1b [not released]
10646 *) Updated a few CA certificates under certs/
10649 *) Changed some BIGNUM api stuff.
10652 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
10653 DGUX x86, Linux Alpha, etc.
10656 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
10657 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
10661 *) Add -strparse option to asn1pars program which parses nested
10663 [Dr Stephen Henson <shenson@bigfoot.com>]
10665 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
10668 *) DSA fix for "ca" program.
10671 *) Added "-genkey" option to "dsaparam" program.
10674 *) Added RIPE MD160 (rmd160) message digest.
10677 *) Added -a (all) option to "ssleay version" command.
10680 *) Added PLATFORM define which is the id given to Configure.
10683 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
10686 *) Extended the ASN.1 parser routines.
10689 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
10692 *) Added a BN_CTX to the BN library.
10695 *) Fixed the weak key values in DES library
10698 *) Changed API in EVP library for cipher aliases.
10701 *) Added support for RC2/64bit cipher.
10704 *) Converted the lhash library to the crypto/mem.c functions.
10707 *) Added more recognized ASN.1 object ids.
10710 *) Added more RSA padding checks for SSL/TLS.
10713 *) Added BIO proxy/filter functionality.
10716 *) Added extra_certs to SSL_CTX which can be used
10717 send extra CA certificates to the client in the CA cert chain sending
10718 process. It can be configured with SSL_CTX_add_extra_chain_cert().
10721 *) Now Fortezza is denied in the authentication phase because
10722 this is key exchange mechanism is not supported by SSLeay at all.
10725 *) Additional PKCS1 checks.
10728 *) Support the string "TLSv1" for all TLS v1 ciphers.
10731 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
10732 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
10735 *) Fixed a few memory leaks.
10738 *) Fixed various code and comment typos.
10741 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
10742 bytes sent in the client random.
10743 [Edward Bishop <ebishop@spyglass.com>]