5 Changes between 1.0.2 and 1.1.0 [xx XXX xxxx]
7 *) Experimental support for a new, fast, unbiased prime candidate generator,
8 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
9 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
11 *) New output format NSS in the sess_id command line tool. This allows
12 exporting the session id and the master key in NSS keylog format.
13 [Martin Kaiser <martin@kaiser.cx>]
15 *) Harmonize version and its documentation. -f flag is used to display
17 [mancha <mancha1@zoho.com>]
19 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
21 [mancha <mancha1@zoho.com>]
23 *) Fix some double frees. These are not thought to be exploitable.
24 [mancha <mancha1@zoho.com>]
26 *) A missing bounds check in the handling of the TLS heartbeat extension
27 can be used to reveal up to 64k of memory to a connected client or
30 Thanks for Neel Mehta of Google Security for discovering this bug and to
31 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
32 preparing the fix (CVE-2014-0160)
33 [Adam Langley, Bodo Moeller]
35 *) Fix for the attack described in the paper "Recovering OpenSSL
36 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
37 by Yuval Yarom and Naomi Benger. Details can be obtained from:
38 http://eprint.iacr.org/2014/140
40 Thanks to Yuval Yarom and Naomi Benger for discovering this
41 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
42 [Yuval Yarom and Naomi Benger]
44 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
45 this fixes a limitation in previous versions of OpenSSL.
48 *) Experimental encrypt-then-mac support.
50 Experimental support for encrypt then mac from
51 draft-gutmann-tls-encrypt-then-mac-02.txt
53 To enable it set the appropriate extension number (0x42 for the test
54 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
56 For non-compliant peers (i.e. just about everything) this should have no
59 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
63 *) Add EVP support for key wrapping algorithms, to avoid problems with
64 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
65 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
66 algorithms and include tests cases.
69 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
73 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
74 MGF1 digest and OAEP label.
77 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
78 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
79 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
82 *) Make openssl verify return errors.
83 [Chris Palmer <palmer@google.com> and Ben Laurie]
85 *) New function ASN1_TIME_diff to calculate the difference between two
86 ASN1_TIME structures or one structure and the current time.
89 *) Update fips_test_suite to support multiple command line options. New
90 test to induce all self test errors in sequence and check expected
94 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
95 sign or verify all in one operation.
98 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
99 test programs and fips_test_suite. Includes functionality to parse
100 the minimal script output of fipsalgest.pl directly.
103 *) Add authorisation parameter to FIPS_module_mode_set().
106 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
109 *) Use separate DRBG fields for internal and external flags. New function
110 FIPS_drbg_health_check() to perform on demand health checking. Add
111 generation tests to fips_test_suite with reduced health check interval to
112 demonstrate periodic health checking. Add "nodh" option to
113 fips_test_suite to skip very slow DH test.
116 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
120 *) More extensive health check for DRBG checking many more failure modes.
121 New function FIPS_selftest_drbg_all() to handle every possible DRBG
122 combination: call this in fips_test_suite.
125 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
126 and POST to handle Dual EC cases.
129 *) Add support for canonical generation of DSA parameter 'g'. See
132 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
133 POST to handle HMAC cases.
136 *) Add functions FIPS_module_version() and FIPS_module_version_text()
137 to return numerical and string versions of the FIPS module number.
140 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
141 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
142 outside the validated module in the FIPS capable OpenSSL.
145 *) Minor change to DRBG entropy callback semantics. In some cases
146 there is no multiple of the block length between min_len and
147 max_len. Allow the callback to return more than max_len bytes
148 of entropy but discard any extra: it is the callback's responsibility
149 to ensure that the extra data discarded does not impact the
150 requested amount of entropy.
153 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
154 information in FIPS186-3, SP800-57 and SP800-131A.
157 *) CCM support via EVP. Interface is very similar to GCM case except we
158 must supply all data in one chunk (i.e. no update, final) and the
159 message length must be supplied if AAD is used. Add algorithm test
163 *) Initial version of POST overhaul. Add POST callback to allow the status
164 of POST to be monitored and/or failures induced. Modify fips_test_suite
165 to use callback. Always run all selftests even if one fails.
168 *) XTS support including algorithm test driver in the fips_gcmtest program.
169 Note: this does increase the maximum key length from 32 to 64 bytes but
170 there should be no binary compatibility issues as existing applications
171 will never use XTS mode.
174 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
175 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
176 performs algorithm blocking for unapproved PRNG types. Also do not
177 set PRNG type in FIPS_mode_set(): leave this to the application.
178 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
179 the standard OpenSSL PRNG: set additional data to a date time vector.
182 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
183 This shouldn't present any incompatibility problems because applications
184 shouldn't be using these directly and any that are will need to rethink
185 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
188 *) Extensive self tests and health checking required by SP800-90 DRBG.
189 Remove strength parameter from FIPS_drbg_instantiate and always
190 instantiate at maximum supported strength.
193 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
196 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
199 *) New function DH_compute_key_padded() to compute a DH key and pad with
200 leading zeroes if needed: this complies with SP800-56A et al.
203 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
204 anything, incomplete, subject to change and largely untested at present.
207 *) Modify fipscanisteronly build option to only build the necessary object
208 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
211 *) Add experimental option FIPSSYMS to give all symbols in
212 fipscanister.o and FIPS or fips prefix. This will avoid
213 conflicts with future versions of OpenSSL. Add perl script
214 util/fipsas.pl to preprocess assembly language source files
215 and rename any affected symbols.
218 *) Add selftest checks and algorithm block of non-fips algorithms in
219 FIPS mode. Remove DES2 from selftests.
222 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
223 return internal method without any ENGINE dependencies. Add new
224 tiny fips sign and verify functions.
227 *) New build option no-ec2m to disable characteristic 2 code.
230 *) New build option "fipscanisteronly". This only builds fipscanister.o
231 and (currently) associated fips utilities. Uses the file Makefile.fips
232 instead of Makefile.org as the prototype.
235 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
236 Update fips_gcmtest to use IV generator.
239 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
240 setting output buffer to NULL. The *Final function must be
241 called although it will not retrieve any additional data. The tag
242 can be set or retrieved with a ctrl. The IV length is by default 12
243 bytes (96 bits) but can be set to an alternative value. If the IV
244 length exceeds the maximum IV length (currently 16 bytes) it cannot be
248 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
249 underlying do_cipher function handles all cipher semantics itself
250 including padding and finalisation. This is useful if (for example)
251 an ENGINE cipher handles block padding itself. The behaviour of
252 do_cipher is subtly changed if this flag is set: the return value
253 is the number of characters written to the output buffer (zero is
254 no longer an error code) or a negative error code. Also if the
255 input buffer is NULL and length 0 finalisation should be performed.
258 *) If a candidate issuer certificate is already part of the constructed
259 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
262 *) Improve forward-security support: add functions
264 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
265 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
267 for use by SSL/TLS servers; the callback function will be called whenever a
268 new session is created, and gets to decide whether the session may be
269 cached to make it resumable (return 0) or not (return 1). (As by the
270 SSL/TLS protocol specifications, the session_id sent by the server will be
271 empty to indicate that the session is not resumable; also, the server will
272 not generate RFC 4507 (RFC 5077) session tickets.)
274 A simple reasonable callback implementation is to return is_forward_secure.
275 This parameter will be set to 1 or 0 depending on the ciphersuite selected
276 by the SSL/TLS server library, indicating whether it can provide forward
278 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
280 *) New -verify_name option in command line utilities to set verification
284 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
285 Add CMAC pkey methods.
288 *) Experimental renegotiation in s_server -www mode. If the client
289 browses /reneg connection is renegotiated. If /renegcert it is
290 renegotiated requesting a certificate.
293 *) Add an "external" session cache for debugging purposes to s_server. This
294 should help trace issues which normally are only apparent in deployed
295 multi-process servers.
298 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
299 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
300 BIO_set_cipher() and some obscure PEM functions were changed so they
301 can now return an error. The RAND changes required a change to the
302 RAND_METHOD structure.
305 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
306 a gcc attribute to warn if the result of a function is ignored. This
307 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
308 whose return value is often ignored.
311 Changes between 1.0.1h and 1.0.2 [xx XXX xxxx]
313 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
314 (other platforms pending).
315 [Shay Gueron (Intel Corp), Andy Polyakov]
317 *) Add support for the SignedCertificateTimestampList certificate and
318 OCSP response extensions from RFC6962.
321 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
322 for corner cases. (Certain input points at infinity could lead to
323 bogus results, with non-infinity inputs mapped to infinity too.)
326 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
327 This covers AES, SHA256/512 and GHASH. "Initial" means that most
328 common cases are optimized and there still is room for further
329 improvements. Vector Permutation AES for Altivec is also added.
332 *) Add support for little-endian ppc64 Linux target.
333 [Marcelo Cerri (IBM)]
335 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
336 SHA1, SHA256 and GHASH. "Initial" means that most common cases
337 are optimized and there still is room for further improvements.
338 Both 32- and 64-bit modes are supported.
339 [Andy Polyakov, Ard Biesheuvel (Linaro)]
341 *) Improved ARMv7 NEON support.
344 *) Support for SPARC Architecture 2011 crypto extensions, first
345 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
346 SHA256/512, MD5, GHASH and modular exponentiation.
347 [Andy Polyakov, David Miller]
349 *) Accelerated modular exponentiation for Intel processors, a.k.a.
351 [Shay Gueron (Intel Corp)]
353 *) Support for new and upcoming Intel processors, including AVX2,
354 BMI and SHA ISA extensions. This includes additional "stitched"
355 implementations, AESNI-SHA256 and GCM, and multi-buffer support
358 This work was sponsored by Intel Corp.
361 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
362 this fixes a limiation in previous versions of OpenSSL.
365 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
366 MGF1 digest and OAEP label.
369 *) Add EVP support for key wrapping algorithms, to avoid problems with
370 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
371 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
372 algorithms and include tests cases.
375 *) Add functions to allocate and set the fields of an ECDSA_METHOD
377 [Douglas E. Engert, Steve Henson]
379 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
380 difference in days and seconds between two tm or ASN1_TIME structures.
383 *) Add -rev test option to s_server to just reverse order of characters
384 received by client and send back to server. Also prints an abbreviated
385 summary of the connection parameters.
388 *) New option -brief for s_client and s_server to print out a brief summary
389 of connection parameters.
392 *) Add callbacks for arbitrary TLS extensions.
393 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
395 *) New option -crl_download in several openssl utilities to download CRLs
396 from CRLDP extension in certificates.
399 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
402 *) New function X509_CRL_diff to generate a delta CRL from the difference
403 of two full CRLs. Add support to "crl" utility.
406 *) New functions to set lookup_crls function and to retrieve
407 X509_STORE from X509_STORE_CTX.
410 *) Print out deprecated issuer and subject unique ID fields in
414 *) Extend OCSP I/O functions so they can be used for simple general purpose
415 HTTP as well as OCSP. New wrapper function which can be used to download
416 CRLs using the OCSP API.
419 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
422 *) SSL_CONF* functions. These provide a common framework for application
423 configuration using configuration files or command lines.
426 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
427 message callback and prints the results. Needs compile time option
428 "enable-ssl-trace". New options to s_client and s_server to enable
432 *) New ctrl and macro to retrieve supported points extensions.
433 Print out extension in s_server and s_client.
436 *) New functions to retrieve certificate signature and signature
440 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
444 *) New Suite B modes for TLS code. These use and enforce the requirements
445 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
446 only use Suite B curves. The Suite B modes can be set by using the
447 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
450 *) New chain verification flags for Suite B levels of security. Check
451 algorithms are acceptable when flags are set in X509_verify_cert.
454 *) Make tls1_check_chain return a set of flags indicating checks passed
455 by a certificate chain. Add additional tests to handle client
456 certificates: checks for matching certificate type and issuer name
460 *) If an attempt is made to use a signature algorithm not in the peer
461 preference list abort the handshake. If client has no suitable
462 signature algorithms in response to a certificate request do not
466 *) If server EC tmp key is not in client preference list abort handshake.
469 *) Add support for certificate stores in CERT structure. This makes it
470 possible to have different stores per SSL structure or one store in
471 the parent SSL_CTX. Include distint stores for certificate chain
472 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
473 to build and store a certificate chain in CERT structure: returing
474 an error if the chain cannot be built: this will allow applications
475 to test if a chain is correctly configured.
477 Note: if the CERT based stores are not set then the parent SSL_CTX
478 store is used to retain compatibility with existing behaviour.
482 *) New function ssl_set_client_disabled to set a ciphersuite disabled
483 mask based on the current session, check mask when sending client
484 hello and checking the requested ciphersuite.
487 *) New ctrls to retrieve and set certificate types in a certificate
488 request message. Print out received values in s_client. If certificate
489 types is not set with custom values set sensible values based on
490 supported signature algorithms.
493 *) Support for distinct client and server supported signature algorithms.
496 *) Add certificate callback. If set this is called whenever a certificate
497 is required by client or server. An application can decide which
498 certificate chain to present based on arbitrary criteria: for example
499 supported signature algorithms. Add very simple example to s_server.
500 This fixes many of the problems and restrictions of the existing client
501 certificate callback: for example you can now clear an existing
502 certificate and specify the whole chain.
505 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
506 the certificate can be used for (if anything). Set valid_flags field
507 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
508 to have similar checks in it.
510 Add new "cert_flags" field to CERT structure and include a "strict mode".
511 This enforces some TLS certificate requirements (such as only permitting
512 certificate signature algorithms contained in the supported algorithms
513 extension) which some implementations ignore: this option should be used
514 with caution as it could cause interoperability issues.
517 *) Update and tidy signature algorithm extension processing. Work out
518 shared signature algorithms based on preferences and peer algorithms
519 and print them out in s_client and s_server. Abort handshake if no
520 shared signature algorithms.
523 *) Add new functions to allow customised supported signature algorithms
524 for SSL and SSL_CTX structures. Add options to s_client and s_server
528 *) New function SSL_certs_clear() to delete all references to certificates
529 from an SSL structure. Before this once a certificate had been added
530 it couldn't be removed.
533 *) Integrate hostname, email address and IP address checking with certificate
534 verification. New verify options supporting checking in opensl utility.
537 *) Fixes and wildcard matching support to hostname and email checking
538 functions. Add manual page.
539 [Florian Weimer (Red Hat Product Security Team)]
541 *) New functions to check a hostname email or IP address against a
542 certificate. Add options x509 utility to print results of checks against
546 *) Fix OCSP checking.
547 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
549 *) Initial experimental support for explicitly trusted non-root CAs.
550 OpenSSL still tries to build a complete chain to a root but if an
551 intermediate CA has a trust setting included that is used. The first
552 setting is used: whether to trust (e.g., -addtrust option to the x509
556 *) Add -trusted_first option which attempts to find certificates in the
557 trusted store even if an untrusted chain is also supplied.
560 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
561 platform support for Linux and Android.
564 *) Support for linux-x32, ILP32 environment in x86_64 framework.
567 *) Experimental multi-implementation support for FIPS capable OpenSSL.
568 When in FIPS mode the approved implementations are used as normal,
569 when not in FIPS mode the internal unapproved versions are used instead.
570 This means that the FIPS capable OpenSSL isn't forced to use the
571 (often lower performance) FIPS implementations outside FIPS mode.
574 *) Transparently support X9.42 DH parameters when calling
575 PEM_read_bio_DHparameters. This means existing applications can handle
576 the new parameter format automatically.
579 *) Initial experimental support for X9.42 DH parameter format: mainly
580 to support use of 'q' parameter for RFC5114 parameters.
583 *) Add DH parameters from RFC5114 including test data to dhtest.
586 *) Support for automatic EC temporary key parameter selection. If enabled
587 the most preferred EC parameters are automatically used instead of
588 hardcoded fixed parameters. Now a server just has to call:
589 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
590 support ECDH and use the most appropriate parameters.
593 *) Enhance and tidy EC curve and point format TLS extension code. Use
594 static structures instead of allocation if default values are used.
595 New ctrls to set curves we wish to support and to retrieve shared curves.
596 Print out shared curves in s_server. New options to s_server and s_client
597 to set list of supported curves.
600 *) New ctrls to retrieve supported signature algorithms and
601 supported curve values as an array of NIDs. Extend openssl utility
602 to print out received values.
605 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
606 between NIDs and the more common NIST names such as "P-256". Enhance
607 ecparam utility and ECC method to recognise the NIST names for curves.
610 *) Enhance SSL/TLS certificate chain handling to support different
611 chains for each certificate instead of one chain in the parent SSL_CTX.
614 *) Support for fixed DH ciphersuite client authentication: where both
615 server and client use DH certificates with common parameters.
618 *) Support for fixed DH ciphersuites: those requiring DH server
622 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
624 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
625 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
626 X509_CINF_get_signature were reverted post internal team review.
628 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
630 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
631 handshake can force the use of weak keying material in OpenSSL
632 SSL/TLS clients and servers.
634 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
635 researching this issue. (CVE-2014-0224)
636 [KIKUCHI Masashi, Steve Henson]
638 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
639 OpenSSL DTLS client the code can be made to recurse eventually crashing
642 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
644 [Imre Rad, Steve Henson]
646 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
647 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
648 client or server. This is potentially exploitable to run arbitrary
649 code on a vulnerable client or server.
651 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
652 [Jüri Aedla, Steve Henson]
654 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
655 are subject to a denial of service attack.
657 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
658 this issue. (CVE-2014-3470)
659 [Felix Gröbert, Ivan Fratric, Steve Henson]
661 *) Harmonize version and its documentation. -f flag is used to display
663 [mancha <mancha1@zoho.com>]
665 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
667 [mancha <mancha1@zoho.com>]
669 *) Fix some double frees. These are not thought to be exploitable.
670 [mancha <mancha1@zoho.com>]
672 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
674 *) A missing bounds check in the handling of the TLS heartbeat extension
675 can be used to reveal up to 64k of memory to a connected client or
678 Thanks for Neel Mehta of Google Security for discovering this bug and to
679 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
680 preparing the fix (CVE-2014-0160)
681 [Adam Langley, Bodo Moeller]
683 *) Fix for the attack described in the paper "Recovering OpenSSL
684 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
685 by Yuval Yarom and Naomi Benger. Details can be obtained from:
686 http://eprint.iacr.org/2014/140
688 Thanks to Yuval Yarom and Naomi Benger for discovering this
689 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
690 [Yuval Yarom and Naomi Benger]
692 *) TLS pad extension: draft-agl-tls-padding-03
694 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
695 TLS client Hello record length value would otherwise be > 255 and
696 less that 512 pad with a dummy extension containing zeroes so it
697 is at least 512 bytes long.
699 [Adam Langley, Steve Henson]
701 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
703 *) Fix for TLS record tampering bug. A carefully crafted invalid
704 handshake could crash OpenSSL with a NULL pointer exception.
705 Thanks to Anton Johansson for reporting this issues.
708 *) Keep original DTLS digest and encryption contexts in retransmission
709 structures so we can use the previous session parameters if they need
710 to be resent. (CVE-2013-6450)
713 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
714 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
715 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
716 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
717 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
718 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
719 [Rob Stradling, Adam Langley]
721 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
723 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
724 supporting platforms or when small records were transferred.
725 [Andy Polyakov, Steve Henson]
727 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
729 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
731 This addresses the flaw in CBC record processing discovered by
732 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
733 at: http://www.isg.rhul.ac.uk/tls/
735 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
736 Security Group at Royal Holloway, University of London
737 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
738 Emilia Käsper for the initial patch.
740 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
742 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
743 ciphersuites which can be exploited in a denial of service attack.
744 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
745 and detecting this bug and to Wolfgang Ettlinger
746 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
750 *) Return an error when checking OCSP signatures when key is NULL.
751 This fixes a DoS attack. (CVE-2013-0166)
754 *) Make openssl verify return errors.
755 [Chris Palmer <palmer@google.com> and Ben Laurie]
757 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
758 the right response is stapled. Also change SSL_get_certificate()
759 so it returns the certificate actually sent.
760 See http://rt.openssl.org/Ticket/Display.html?id=2836.
761 [Rob Stradling <rob.stradling@comodo.com>]
763 *) Fix possible deadlock when decoding public keys.
766 *) Don't use TLS 1.0 record version number in initial client hello
770 Changes between 1.0.1b and 1.0.1c [10 May 2012]
772 *) Sanity check record length before skipping explicit IV in TLS
773 1.2, 1.1 and DTLS to fix DoS attack.
775 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
776 fuzzing as a service testing platform.
780 *) Initialise tkeylen properly when encrypting CMS messages.
781 Thanks to Solar Designer of Openwall for reporting this issue.
784 *) In FIPS mode don't try to use composite ciphers as they are not
788 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
790 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
791 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
792 mean any application compiled against OpenSSL 1.0.0 headers setting
793 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
794 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
795 0x10000000L Any application which was previously compiled against
796 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
797 will need to be recompiled as a result. Letting be results in
798 inability to disable specifically TLS 1.1 and in client context,
799 in unlike event, limit maximum offered version to TLS 1.0 [see below].
802 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
803 disable just protocol X, but all protocols above X *if* there are
804 protocols *below* X still enabled. In more practical terms it means
805 that if application wants to disable TLS1.0 in favor of TLS1.1 and
806 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
807 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
811 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
813 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
814 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
815 in CRYPTO_realloc_clean.
817 Thanks to Tavis Ormandy, Google Security Team, for discovering this
818 issue and to Adam Langley <agl@chromium.org> for fixing it.
820 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
822 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
825 *) Workarounds for some broken servers that "hang" if a client hello
826 record length exceeds 255 bytes.
828 1. Do not use record version number > TLS 1.0 in initial client
829 hello: some (but not all) hanging servers will now work.
830 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
831 the number of ciphers sent in the client hello. This should be
832 set to an even number, such as 50, for example by passing:
833 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
834 Most broken servers should now work.
835 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
836 TLS 1.2 client support entirely.
839 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
842 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
844 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
845 STRING form instead of a DigestInfo.
848 *) The format used for MDC2 RSA signatures is inconsistent between EVP
849 and the RSA_sign/RSA_verify functions. This was made more apparent when
850 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
851 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
852 the correct format in RSA_verify so both forms transparently work.
855 *) Some servers which support TLS 1.0 can choke if we initially indicate
856 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
857 encrypted premaster secret. As a workaround use the maximum permitted
858 client version in client hello, this should keep such servers happy
859 and still work with previous versions of OpenSSL.
862 *) Add support for TLS/DTLS heartbeats.
863 [Robin Seggelmann <seggelmann@fh-muenster.de>]
865 *) Add support for SCTP.
866 [Robin Seggelmann <seggelmann@fh-muenster.de>]
868 *) Improved PRNG seeding for VOS.
869 [Paul Green <Paul.Green@stratus.com>]
871 *) Extensive assembler packs updates, most notably:
873 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
874 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
875 - x86_64: bit-sliced AES implementation;
876 - ARM: NEON support, contemporary platforms optimizations;
877 - s390x: z196 support;
878 - *: GHASH and GF(2^m) multiplication implementations;
882 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
883 (removal of unnecessary code)
884 [Peter Sylvester <peter.sylvester@edelweb.fr>]
886 *) Add TLS key material exporter from RFC 5705.
889 *) Add DTLS-SRTP negotiation from RFC 5764.
892 *) Add Next Protocol Negotiation,
893 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
894 disabled with a no-npn flag to config or Configure. Code donated
896 [Adam Langley <agl@google.com> and Ben Laurie]
898 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
899 NIST-P256, NIST-P521, with constant-time single point multiplication on
900 typical inputs. Compiler support for the nonstandard type __uint128_t is
901 required to use this (present in gcc 4.4 and later, for 64-bit builds).
902 Code made available under Apache License version 2.0.
904 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
905 line to include this in your build of OpenSSL, and run "make depend" (or
906 "make update"). This enables the following EC_METHODs:
908 EC_GFp_nistp224_method()
909 EC_GFp_nistp256_method()
910 EC_GFp_nistp521_method()
912 EC_GROUP_new_by_curve_name() will automatically use these (while
913 EC_GROUP_new_curve_GFp() currently prefers the more flexible
915 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
917 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
918 all platforms. Move ssize_t definition from e_os.h to the public
919 header file e_os2.h as it now appears in public header file cms.h
922 *) New -sigopt option to the ca, req and x509 utilities. Additional
923 signature parameters can be passed using this option and in
927 *) Add RSA PSS signing function. This will generate and set the
928 appropriate AlgorithmIdentifiers for PSS based on those in the
929 corresponding EVP_MD_CTX structure. No application support yet.
932 *) Support for companion algorithm specific ASN1 signing routines.
933 New function ASN1_item_sign_ctx() signs a pre-initialised
934 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
935 the appropriate parameters.
938 *) Add new algorithm specific ASN1 verification initialisation function
939 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
940 handling will be the same no matter what EVP_PKEY_METHOD is used.
941 Add a PSS handler to support verification of PSS signatures: checked
942 against a number of sample certificates.
945 *) Add signature printing for PSS. Add PSS OIDs.
946 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
948 *) Add algorithm specific signature printing. An individual ASN1 method
949 can now print out signatures instead of the standard hex dump.
951 More complex signatures (e.g. PSS) can print out more meaningful
952 information. Include DSA version that prints out the signature
956 *) Password based recipient info support for CMS library: implementing
960 *) Split password based encryption into PBES2 and PBKDF2 functions. This
961 neatly separates the code into cipher and PBE sections and is required
962 for some algorithms that split PBES2 into separate pieces (such as
966 *) Session-handling fixes:
967 - Fix handling of connections that are resuming with a session ID,
968 but also support Session Tickets.
969 - Fix a bug that suppressed issuing of a new ticket if the client
970 presented a ticket with an expired session.
971 - Try to set the ticket lifetime hint to something reasonable.
972 - Make tickets shorter by excluding irrelevant information.
973 - On the client side, don't ignore renewed tickets.
974 [Adam Langley, Bodo Moeller (Google)]
976 *) Fix PSK session representation.
979 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
981 This work was sponsored by Intel.
984 *) Add GCM support to TLS library. Some custom code is needed to split
985 the IV between the fixed (from PRF) and explicit (from TLS record)
986 portions. This adds all GCM ciphersuites supported by RFC5288 and
987 RFC5289. Generalise some AES* cipherstrings to include GCM and
988 add a special AESGCM string for GCM only.
991 *) Expand range of ctrls for AES GCM. Permit setting invocation
992 field on decrypt and retrieval of invocation field only on encrypt.
995 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
996 As required by RFC5289 these ciphersuites cannot be used if for
997 versions of TLS earlier than 1.2.
1000 *) For FIPS capable OpenSSL interpret a NULL default public key method
1001 as unset and return the appropriate default but do *not* set the default.
1002 This means we can return the appropriate method in applications that
1003 switch between FIPS and non-FIPS modes.
1006 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
1007 ENGINE is used then we cannot handle that in the FIPS module so we
1008 keep original code iff non-FIPS operations are allowed.
1011 *) Add -attime option to openssl utilities.
1012 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
1014 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
1017 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
1018 FIPS EC methods unconditionally for now.
1021 *) New build option no-ec2m to disable characteristic 2 code.
1024 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
1025 all cases can be covered as some introduce binary incompatibilities.
1028 *) Redirect RSA operations to FIPS module including keygen,
1029 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
1032 *) Add similar low level API blocking to ciphers.
1035 *) Low level digest APIs are not approved in FIPS mode: any attempt
1036 to use these will cause a fatal error. Applications that *really* want
1037 to use them can use the private_* version instead.
1040 *) Redirect cipher operations to FIPS module for FIPS builds.
1043 *) Redirect digest operations to FIPS module for FIPS builds.
1046 *) Update build system to add "fips" flag which will link in fipscanister.o
1047 for static and shared library builds embedding a signature if needed.
1050 *) Output TLS supported curves in preference order instead of numerical
1051 order. This is currently hardcoded for the highest order curves first.
1052 This should be configurable so applications can judge speed vs strength.
1055 *) Add TLS v1.2 server support for client authentication.
1058 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
1062 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
1063 FIPS modules versions.
1066 *) Add TLS v1.2 client side support for client authentication. Keep cache
1067 of handshake records longer as we don't know the hash algorithm to use
1068 until after the certificate request message is received.
1071 *) Initial TLS v1.2 client support. Add a default signature algorithms
1072 extension including all the algorithms we support. Parse new signature
1073 format in client key exchange. Relax some ECC signing restrictions for
1074 TLS v1.2 as indicated in RFC5246.
1077 *) Add server support for TLS v1.2 signature algorithms extension. Switch
1078 to new signature format when needed using client digest preference.
1079 All server ciphersuites should now work correctly in TLS v1.2. No client
1080 support yet and no support for client certificates.
1083 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
1084 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
1085 ciphersuites. At present only RSA key exchange ciphersuites work with
1086 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
1087 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
1088 and version checking.
1091 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
1092 with this defined it will not be affected by any changes to ssl internal
1093 structures. Add several utility functions to allow openssl application
1094 to work with OPENSSL_NO_SSL_INTERN defined.
1098 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
1100 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
1103 *) Permit abbreviated handshakes when renegotiating using the function
1104 SSL_renegotiate_abbreviated().
1105 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1107 *) Add call to ENGINE_register_all_complete() to
1108 ENGINE_load_builtin_engines(), so some implementations get used
1109 automatically instead of needing explicit application support.
1112 *) Add support for TLS key exporter as described in RFC5705.
1113 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
1115 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
1116 a few changes are required:
1118 Add SSL_OP_NO_TLSv1_1 flag.
1119 Add TLSv1_1 methods.
1120 Update version checking logic to handle version 1.1.
1121 Add explicit IV handling (ported from DTLS code).
1122 Add command line options to s_client/s_server.
1125 Changes between 1.0.0j and 1.0.0k [5 Feb 2013]
1127 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
1129 This addresses the flaw in CBC record processing discovered by
1130 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
1131 at: http://www.isg.rhul.ac.uk/tls/
1133 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1134 Security Group at Royal Holloway, University of London
1135 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
1136 Emilia Käsper for the initial patch.
1138 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
1140 *) Return an error when checking OCSP signatures when key is NULL.
1141 This fixes a DoS attack. (CVE-2013-0166)
1144 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
1145 the right response is stapled. Also change SSL_get_certificate()
1146 so it returns the certificate actually sent.
1147 See http://rt.openssl.org/Ticket/Display.html?id=2836.
1148 (This is a backport)
1149 [Rob Stradling <rob.stradling@comodo.com>]
1151 *) Fix possible deadlock when decoding public keys.
1154 Changes between 1.0.0i and 1.0.0j [10 May 2012]
1156 [NB: OpenSSL 1.0.0i and later 1.0.0 patch levels were released after
1159 *) Sanity check record length before skipping explicit IV in DTLS
1162 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1163 fuzzing as a service testing platform.
1167 *) Initialise tkeylen properly when encrypting CMS messages.
1168 Thanks to Solar Designer of Openwall for reporting this issue.
1171 Changes between 1.0.0h and 1.0.0i [19 Apr 2012]
1173 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1174 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1175 in CRYPTO_realloc_clean.
1177 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1178 issue and to Adam Langley <agl@chromium.org> for fixing it.
1180 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1182 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
1184 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
1185 in CMS and PKCS7 code. When RSA decryption fails use a random key for
1186 content decryption and always return the same error. Note: this attack
1187 needs on average 2^20 messages so it only affects automated senders. The
1188 old behaviour can be reenabled in the CMS code by setting the
1189 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
1190 an MMA defence is not necessary.
1191 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
1192 this issue. (CVE-2012-0884)
1195 *) Fix CVE-2011-4619: make sure we really are receiving a
1196 client hello before rejecting multiple SGC restarts. Thanks to
1197 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
1200 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
1202 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1203 Thanks to Antonio Martin, Enterprise Secure Access Research and
1204 Development, Cisco Systems, Inc. for discovering this bug and
1205 preparing a fix. (CVE-2012-0050)
1208 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
1210 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1211 of the Vaudenay padding oracle attack on CBC mode encryption
1212 which enables an efficient plaintext recovery attack against
1213 the OpenSSL implementation of DTLS. Their attack exploits timing
1214 differences arising during decryption processing. A research
1215 paper describing this attack can be found at:
1216 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1217 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1218 Security Group at Royal Holloway, University of London
1219 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1220 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1221 for preparing the fix. (CVE-2011-4108)
1222 [Robin Seggelmann, Michael Tuexen]
1224 *) Clear bytes used for block padding of SSL 3.0 records.
1226 [Adam Langley (Google)]
1228 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1229 Kadianakis <desnacked@gmail.com> for discovering this issue and
1230 Adam Langley for preparing the fix. (CVE-2011-4619)
1231 [Adam Langley (Google)]
1233 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
1234 [Andrey Kulikov <amdeich@gmail.com>]
1236 *) Prevent malformed RFC3779 data triggering an assertion failure.
1237 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1238 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1239 [Rob Austein <sra@hactrn.net>]
1241 *) Improved PRNG seeding for VOS.
1242 [Paul Green <Paul.Green@stratus.com>]
1244 *) Fix ssl_ciph.c set-up race.
1245 [Adam Langley (Google)]
1247 *) Fix spurious failures in ecdsatest.c.
1248 [Emilia Käsper (Google)]
1250 *) Fix the BIO_f_buffer() implementation (which was mixing different
1251 interpretations of the '..._len' fields).
1252 [Adam Langley (Google)]
1254 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1255 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1256 threads won't reuse the same blinding coefficients.
1258 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1259 lock to call BN_BLINDING_invert_ex, and avoids one use of
1260 BN_BLINDING_update for each BN_BLINDING structure (previously,
1261 the last update always remained unused).
1262 [Emilia Käsper (Google)]
1264 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
1265 [Bob Buckholz (Google)]
1267 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
1269 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
1270 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
1271 [Kaspar Brand <ossl@velox.ch>]
1273 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1274 for multi-threaded use of ECDH. (CVE-2011-3210)
1275 [Adam Langley (Google)]
1277 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1280 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
1281 signature public key algorithm by using OID xref utilities instead.
1282 Before this you could only use some ECC ciphersuites with SHA1 only.
1285 *) Add protection against ECDSA timing attacks as mentioned in the paper
1286 by Billy Bob Brumley and Nicola Tuveri, see:
1288 http://eprint.iacr.org/2011/232.pdf
1290 [Billy Bob Brumley and Nicola Tuveri]
1292 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
1294 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1295 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1297 *) Fix bug in string printing code: if *any* escaping is enabled we must
1298 escape the escape character (backslash) or the resulting string is
1302 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
1304 *) Disable code workaround for ancient and obsolete Netscape browsers
1305 and servers: an attacker can use it in a ciphersuite downgrade attack.
1306 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1309 *) Fixed J-PAKE implementation error, originally discovered by
1310 Sebastien Martini, further info and confirmation from Stefan
1311 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1314 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
1316 *) Fix extension code to avoid race conditions which can result in a buffer
1317 overrun vulnerability: resumed sessions must not be modified as they can
1318 be shared by multiple threads. CVE-2010-3864
1321 *) Fix WIN32 build system to correctly link an ENGINE directory into
1325 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
1327 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
1329 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
1331 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
1333 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
1334 context. The operation can be customised via the ctrl mechanism in
1335 case ENGINEs want to include additional functionality.
1338 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
1341 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
1342 output hashes compatible with older versions of OpenSSL.
1343 [Willy Weisz <weisz@vcpc.univie.ac.at>]
1345 *) Fix compression algorithm handling: if resuming a session use the
1346 compression algorithm of the resumed session instead of determining
1347 it from client hello again. Don't allow server to change algorithm.
1350 *) Add load_crls() function to apps tidying load_certs() too. Add option
1351 to verify utility to allow additional CRLs to be included.
1354 *) Update OCSP request code to permit adding custom headers to the request:
1355 some responders need this.
1358 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
1360 [Julia Lawall <julia@diku.dk>]
1362 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
1363 needlessly dereferenced structures, used obsolete functions and
1364 didn't handle all updated verify codes correctly.
1367 *) Disable MD2 in the default configuration.
1370 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
1371 indicate the initial BIO being pushed or popped. This makes it possible
1372 to determine whether the BIO is the one explicitly called or as a result
1373 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
1374 it handles reference counts correctly and doesn't zero out the I/O bio
1375 when it is not being explicitly popped. WARNING: applications which
1376 included workarounds for the old buggy behaviour will need to be modified
1377 or they could free up already freed BIOs.
1380 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
1381 renaming to all platforms (within the 0.9.8 branch, this was
1382 done conditionally on Netware platforms to avoid a name clash).
1383 [Guenter <lists@gknw.net>]
1385 *) Add ECDHE and PSK support to DTLS.
1386 [Michael Tuexen <tuexen@fh-muenster.de>]
1388 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
1392 *) Add "missing" function EVP_MD_flags() (without this the only way to
1393 retrieve a digest flags is by accessing the structure directly. Update
1394 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
1395 or cipher is registered as in the "from" argument. Print out all
1396 registered digests in the dgst usage message instead of manually
1397 attempting to work them out.
1400 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
1401 this allows the use of compression and extensions. Change default cipher
1402 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
1403 by default unless an application cipher string requests it.
1406 *) Alter match criteria in PKCS12_parse(). It used to try to use local
1407 key ids to find matching certificates and keys but some PKCS#12 files
1408 don't follow the (somewhat unwritten) rules and this strategy fails.
1409 Now just gather all certificates together and the first private key
1410 then look for the first certificate that matches the key.
1413 *) Support use of registered digest and cipher names for dgst and cipher
1414 commands instead of having to add each one as a special case. So now
1421 openssl dgst -sha256 foo
1423 and this works for ENGINE based algorithms too.
1427 *) Update Gost ENGINE to support parameter files.
1428 [Victor B. Wagner <vitus@cryptocom.ru>]
1430 *) Support GeneralizedTime in ca utility.
1431 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
1433 *) Enhance the hash format used for certificate directory links. The new
1434 form uses the canonical encoding (meaning equivalent names will work
1435 even if they aren't identical) and uses SHA1 instead of MD5. This form
1436 is incompatible with the older format and as a result c_rehash should
1437 be used to rebuild symbolic links.
1440 *) Make PKCS#8 the default write format for private keys, replacing the
1441 traditional format. This form is standardised, more secure and doesn't
1442 include an implicit MD5 dependency.
1445 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
1446 committed to OpenSSL should pass this lot as a minimum.
1449 *) Add session ticket override functionality for use by EAP-FAST.
1450 [Jouni Malinen <j@w1.fi>]
1452 *) Modify HMAC functions to return a value. Since these can be implemented
1453 in an ENGINE errors can occur.
1456 *) Type-checked OBJ_bsearch_ex.
1459 *) Type-checked OBJ_bsearch. Also some constification necessitated
1460 by type-checking. Still to come: TXT_DB, bsearch(?),
1461 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
1465 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
1466 seconds to a tm structure directly, instead of going through OS
1467 specific date routines. This avoids any issues with OS routines such
1468 as the year 2038 bug. New *_adj() functions for ASN1 time structures
1469 and X509_time_adj_ex() to cover the extended range. The existing
1470 X509_time_adj() is still usable and will no longer have any date issues.
1473 *) Delta CRL support. New use deltas option which will attempt to locate
1474 and search any appropriate delta CRLs available.
1476 This work was sponsored by Google.
1479 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
1480 code and add additional score elements. Validate alternate CRL paths
1481 as part of the CRL checking and indicate a new error "CRL path validation
1482 error" in this case. Applications wanting additional details can use
1483 the verify callback and check the new "parent" field. If this is not
1484 NULL CRL path validation is taking place. Existing applications wont
1485 see this because it requires extended CRL support which is off by
1488 This work was sponsored by Google.
1491 *) Support for freshest CRL extension.
1493 This work was sponsored by Google.
1496 *) Initial indirect CRL support. Currently only supported in the CRLs
1497 passed directly and not via lookup. Process certificate issuer
1498 CRL entry extension and lookup CRL entries by bother issuer name
1499 and serial number. Check and process CRL issuer entry in IDP extension.
1501 This work was sponsored by Google.
1504 *) Add support for distinct certificate and CRL paths. The CRL issuer
1505 certificate is validated separately in this case. Only enabled if
1506 an extended CRL support flag is set: this flag will enable additional
1507 CRL functionality in future.
1509 This work was sponsored by Google.
1512 *) Add support for policy mappings extension.
1514 This work was sponsored by Google.
1517 *) Fixes to pathlength constraint, self issued certificate handling,
1518 policy processing to align with RFC3280 and PKITS tests.
1520 This work was sponsored by Google.
1523 *) Support for name constraints certificate extension. DN, email, DNS
1524 and URI types are currently supported.
1526 This work was sponsored by Google.
1529 *) To cater for systems that provide a pointer-based thread ID rather
1530 than numeric, deprecate the current numeric thread ID mechanism and
1531 replace it with a structure and associated callback type. This
1532 mechanism allows a numeric "hash" to be extracted from a thread ID in
1533 either case, and on platforms where pointers are larger than 'long',
1534 mixing is done to help ensure the numeric 'hash' is usable even if it
1535 can't be guaranteed unique. The default mechanism is to use "&errno"
1536 as a pointer-based thread ID to distinguish between threads.
1538 Applications that want to provide their own thread IDs should now use
1539 CRYPTO_THREADID_set_callback() to register a callback that will call
1540 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
1542 Note that ERR_remove_state() is now deprecated, because it is tied
1543 to the assumption that thread IDs are numeric. ERR_remove_state(0)
1544 to free the current thread's error state should be replaced by
1545 ERR_remove_thread_state(NULL).
1547 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
1548 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
1549 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
1550 application was previously providing a numeric thread callback that
1551 was inappropriate for distinguishing threads, then uniqueness might
1552 have been obtained with &errno that happened immediately in the
1553 intermediate development versions of OpenSSL; this is no longer the
1554 case, the numeric thread callback will now override the automatic use
1556 [Geoff Thorpe, with help from Bodo Moeller]
1558 *) Initial support for different CRL issuing certificates. This covers a
1559 simple case where the self issued certificates in the chain exist and
1560 the real CRL issuer is higher in the existing chain.
1562 This work was sponsored by Google.
1565 *) Removed effectively defunct crypto/store from the build.
1568 *) Revamp of STACK to provide stronger type-checking. Still to come:
1569 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
1570 ASN1_STRING, CONF_VALUE.
1573 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
1574 RAM on SSL connections. This option can save about 34k per idle SSL.
1577 *) Revamp of LHASH to provide stronger type-checking. Still to come:
1578 STACK, TXT_DB, bsearch, qsort.
1581 *) Initial support for Cryptographic Message Syntax (aka CMS) based
1582 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
1583 support for data, signedData, compressedData, digestedData and
1584 encryptedData, envelopedData types included. Scripts to check against
1585 RFC4134 examples draft and interop and consistency checks of many
1586 content types and variants.
1589 *) Add options to enc utility to support use of zlib compression BIO.
1592 *) Extend mk1mf to support importing of options and assembly language
1593 files from Configure script, currently only included in VC-WIN32.
1594 The assembly language rules can now optionally generate the source
1595 files from the associated perl scripts.
1598 *) Implement remaining functionality needed to support GOST ciphersuites.
1599 Interop testing has been performed using CryptoPro implementations.
1600 [Victor B. Wagner <vitus@cryptocom.ru>]
1602 *) s390x assembler pack.
1605 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
1609 *) Implement Opaque PRF Input TLS extension as specified in
1610 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
1611 official specification yet and no extension type assignment by
1612 IANA exists, this extension (for now) will have to be explicitly
1613 enabled when building OpenSSL by providing the extension number
1614 to use. For example, specify an option
1616 -DTLSEXT_TYPE_opaque_prf_input=0x9527
1618 to the "config" or "Configure" script to enable the extension,
1619 assuming extension number 0x9527 (which is a completely arbitrary
1620 and unofficial assignment based on the MD5 hash of the Internet
1621 Draft). Note that by doing so, you potentially lose
1622 interoperability with other TLS implementations since these might
1623 be using the same extension number for other purposes.
1625 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
1626 opaque PRF input value to use in the handshake. This will create
1627 an interal copy of the length-'len' string at 'src', and will
1628 return non-zero for success.
1630 To get more control and flexibility, provide a callback function
1633 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
1634 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
1638 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
1641 Callback function 'cb' will be called in handshakes, and is
1642 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
1643 Argument 'arg' is for application purposes (the value as given to
1644 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
1645 be provided to the callback function). The callback function
1646 has to return non-zero to report success: usually 1 to use opaque
1647 PRF input just if possible, or 2 to enforce use of the opaque PRF
1648 input. In the latter case, the library will abort the handshake
1649 if opaque PRF input is not successfully negotiated.
1651 Arguments 'peerinput' and 'len' given to the callback function
1652 will always be NULL and 0 in the case of a client. A server will
1653 see the client's opaque PRF input through these variables if
1654 available (NULL and 0 otherwise). Note that if the server
1655 provides an opaque PRF input, the length must be the same as the
1656 length of the client's opaque PRF input.
1658 Note that the callback function will only be called when creating
1659 a new session (session resumption can resume whatever was
1660 previously negotiated), and will not be called in SSL 2.0
1661 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
1662 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
1663 for applications that need to enforce opaque PRF input.
1667 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1670 [Victor B. Wagner <vitus@cryptocom.ru>]
1672 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1673 RFC4507bis. The encrypted ticket format is an encrypted encoded
1674 SSL_SESSION structure, that way new session features are automatically
1677 If a client application caches session in an SSL_SESSION structure
1678 support is transparent because tickets are now stored in the encoded
1681 The SSL_CTX structure automatically generates keys for ticket
1682 protection in servers so again support should be possible
1683 with no application modification.
1685 If a client or server wishes to disable RFC4507 support then the option
1686 SSL_OP_NO_TICKET can be set.
1688 Add a TLS extension debugging callback to allow the contents of any client
1689 or server extensions to be examined.
1691 This work was sponsored by Google.
1694 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1695 OpenSSL should now compile cleanly on gcc 4.2
1696 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1698 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1699 support including streaming MAC support: this is required for GOST
1700 ciphersuite support.
1701 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1703 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1704 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1705 to output in BER and PEM format.
1708 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1709 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1710 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1711 ENGINE support for HMAC keys which are unextractable. New -mac and
1712 -macopt options to dgst utility.
1715 *) New option -sigopt to dgst utility. Update dgst to use
1716 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1717 alternative signing paramaters such as X9.31 or PSS in the dgst
1721 *) Change ssl_cipher_apply_rule(), the internal function that does
1722 the work each time a ciphersuite string requests enabling
1723 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1724 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1725 the order of disabled ciphersuites such that those ciphersuites
1726 that most recently went from enabled to disabled not only stay
1727 in order with respect to each other, but also have higher priority
1728 than other disabled ciphersuites the next time ciphersuites are
1731 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1732 the same ciphersuites as with "HIGH" alone, but in a specific
1733 order where the PSK ciphersuites come first (since they are the
1734 most recently disabled ciphersuites when "HIGH" is parsed).
1736 Also, change ssl_create_cipher_list() (using this new
1737 funcionality) such that between otherwise identical
1738 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1742 *) Change ssl_create_cipher_list() so that it automatically
1743 arranges the ciphersuites in reasonable order before starting
1744 to process the rule string. Thus, the definition for "DEFAULT"
1745 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1746 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1747 This makes it much easier to arrive at a reasonable default order
1748 in applications for which anonymous ciphers are OK (meaning
1749 that you can't actually use DEFAULT).
1750 [Bodo Moeller; suggested by Victor Duchovni]
1752 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1753 processing) into multiple integers instead of setting
1754 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1755 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1756 (These masks as well as the individual bit definitions are hidden
1757 away into the non-exported interface ssl/ssl_locl.h, so this
1758 change to the definition of the SSL_CIPHER structure shouldn't
1759 affect applications.) This give us more bits for each of these
1760 categories, so there is no longer a need to coagulate AES128 and
1761 AES256 into a single algorithm bit, and to coagulate Camellia128
1762 and Camellia256 into a single algorithm bit, which has led to all
1765 Thus, among other things, the kludge introduced in 0.9.7m and
1766 0.9.8e for masking out AES256 independently of AES128 or masking
1767 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1769 With the change, we also introduce new ciphersuite aliases that
1770 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1774 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1775 Use the leftmost N bytes of the signature input if the input is
1776 larger than the prime q (with N being the size in bytes of q).
1779 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1780 it yet and it is largely untested.
1783 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1786 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1787 some compilers (gcc 4.2 and later) reject their use. Safestack is
1788 reimplemented. Update ASN1 to avoid use of legacy functions.
1791 *) Win32/64 targets are linked with Winsock2.
1794 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1795 to external functions. This can be used to increase CRL handling
1796 efficiency especially when CRLs are very large by (for example) storing
1797 the CRL revoked certificates in a database.
1800 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1801 new CRLs added to a directory can be used. New command line option
1802 -verify_return_error to s_client and s_server. This causes real errors
1803 to be returned by the verify callback instead of carrying on no matter
1804 what. This reflects the way a "real world" verify callback would behave.
1807 *) GOST engine, supporting several GOST algorithms and public key formats.
1808 Kindly donated by Cryptocom.
1811 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1812 partitioned by DP are handled but no indirect CRL or reason partitioning
1813 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1814 selected via a scoring technique which handles IDP and AKID in CRLs.
1817 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1818 will ultimately be used for all verify operations: this will remove the
1819 X509_STORE dependency on certificate verification and allow alternative
1820 lookup methods. X509_STORE based implementations of these two callbacks.
1823 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1824 Modify get_crl() to find a valid (unexpired) CRL if possible.
1827 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1828 this would be called X509_CRL_cmp() but that name is already used by
1829 a function that just compares CRL issuer names. Cache several CRL
1830 extensions in X509_CRL structure and cache CRLDP in X509.
1833 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1834 this maps equivalent X509_NAME structures into a consistent structure.
1835 Name comparison can then be performed rapidly using memcmp().
1838 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1842 *) Allow digests to supply their own micalg string for S/MIME type using
1843 the ctrl EVP_MD_CTRL_MICALG.
1846 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1847 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1848 ctrl. It can then customise the structure before and/or after signing
1852 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1853 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1854 to free up any added signature OIDs.
1857 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1858 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1859 digest and cipher tables. New options added to openssl utility:
1860 list-message-digest-algorithms and list-cipher-algorithms.
1863 *) Change the array representation of binary polynomials: the list
1864 of degrees of non-zero coefficients is now terminated with -1.
1865 Previously it was terminated with 0, which was also part of the
1866 value; thus, the array representation was not applicable to
1867 polynomials where t^0 has coefficient zero. This change makes
1868 the array representation useful in a more general context.
1871 *) Various modifications and fixes to SSL/TLS cipher string
1872 handling. For ECC, the code now distinguishes between fixed ECDH
1873 with RSA certificates on the one hand and with ECDSA certificates
1874 on the other hand, since these are separate ciphersuites. The
1875 unused code for Fortezza ciphersuites has been removed.
1877 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1878 (not "ECDHE"). For consistency with the code for DH
1879 certificates, use of ECDH certificates is now considered ECDH
1880 authentication, not RSA or ECDSA authentication (the latter is
1881 merely the CA's signing algorithm and not actively used in the
1884 The temporary ciphersuite alias "ECCdraft" is no longer
1885 available, and ECC ciphersuites are no longer excluded from "ALL"
1886 and "DEFAULT". The following aliases now exist for RFC 4492
1887 ciphersuites, most of these by analogy with the DH case:
1889 kECDHr - ECDH cert, signed with RSA
1890 kECDHe - ECDH cert, signed with ECDSA
1891 kECDH - ECDH cert (signed with either RSA or ECDSA)
1892 kEECDH - ephemeral ECDH
1893 ECDH - ECDH cert or ephemeral ECDH
1899 AECDH - anonymous ECDH
1900 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1904 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1905 Use correct micalg parameters depending on digest(s) in signed message.
1908 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1909 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1912 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1913 an engine to register a method. Add ENGINE lookups for methods and
1914 functional reference processing.
1917 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1918 EVP_{Sign,Verify}* which allow an application to customise the signature
1922 *) New -resign option to smime utility. This adds one or more signers
1923 to an existing PKCS#7 signedData structure. Also -md option to use an
1924 alternative message digest algorithm for signing.
1927 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1928 create PKCS7 structures containing multiple signers. Update smime
1929 application to support multiple signers.
1932 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1936 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1937 Reorganize PBE internals to lookup from a static table using NIDs,
1938 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1939 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1940 PRF which will be automatically used with PBES2.
1943 *) Replace the algorithm specific calls to generate keys in "req" with the
1947 *) Update PKCS#7 enveloped data routines to use new API. This is now
1948 supported by any public key method supporting the encrypt operation. A
1949 ctrl is added to allow the public key algorithm to examine or modify
1950 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1954 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1955 a default digest type to use. In most cases this will be SHA1 but some
1956 algorithms (such as GOST) need to specify an alternative digest. The
1957 return value indicates how strong the preference is 1 means optional and
1958 2 is mandatory (that is it is the only supported type). Modify
1959 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1960 use the default md. Update openssl utilities to use the default digest
1961 type for signing if it is not explicitly indicated.
1964 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1965 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1966 signing method from the key type. This effectively removes the link
1967 between digests and public key types.
1970 *) Add an OID cross reference table and utility functions. Its purpose is to
1971 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1972 rsaEncryption. This will allow some of the algorithm specific hackery
1973 needed to use the correct OID to be removed.
1976 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1977 structures for PKCS7_sign(). They are now set up by the relevant public
1981 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1984 *) Add support for key derivation (agreement) in the API, DH method and
1988 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1989 public and private key formats. As a side effect these add additional
1990 command line functionality not previously available: DSA signatures can be
1991 generated and verified using pkeyutl and DH key support and generation in
1996 [Oliver Tappe <zooey@hirschkaefer.de>]
1998 *) New make target "install_html_docs" installs HTML renditions of the
2000 [Oliver Tappe <zooey@hirschkaefer.de>]
2002 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
2003 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
2004 support key and parameter generation and add initial key generation
2005 functionality for RSA.
2008 *) Add functions for main EVP_PKEY_method operations. The undocumented
2009 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
2010 EVP_PKEY_{encrypt,decrypt}_old.
2013 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
2014 key API, doesn't do much yet.
2017 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
2018 public key algorithms. New option to openssl utility:
2019 "list-public-key-algorithms" to print out info.
2022 *) Implement the Supported Elliptic Curves Extension for
2023 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2026 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
2027 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
2030 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
2031 utilities such as rsa, dsa, dsaparam etc except they process any key
2035 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
2036 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
2037 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
2041 *) Initial support for pluggable public key ASN1.
2042 De-spaghettify the public key ASN1 handling. Move public and private
2043 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
2044 algorithm specific handling to a single module within the relevant
2045 algorithm directory. Add functions to allow (near) opaque processing
2046 of public and private key structures.
2049 *) Implement the Supported Point Formats Extension for
2050 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2053 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
2054 for the psk identity [hint] and the psk callback functions to the
2055 SSL_SESSION, SSL and SSL_CTX structure.
2058 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
2062 SSL_CTX_use_psk_identity_hint
2063 SSL_get_psk_identity_hint
2064 SSL_get_psk_identity
2065 SSL_use_psk_identity_hint
2067 [Mika Kousa and Pasi Eronen of Nokia Corporation]
2069 *) Add RFC 3161 compliant time stamp request creation, response generation
2070 and response verification functionality.
2071 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
2073 *) Add initial support for TLS extensions, specifically for the server_name
2074 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2075 have new members for a host name. The SSL data structure has an
2076 additional member SSL_CTX *initial_ctx so that new sessions can be
2077 stored in that context to allow for session resumption, even after the
2078 SSL has been switched to a new SSL_CTX in reaction to a client's
2079 server_name extension.
2081 New functions (subject to change):
2083 SSL_get_servername()
2084 SSL_get_servername_type()
2087 New CTRL codes and macros (subject to change):
2089 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2090 - SSL_CTX_set_tlsext_servername_callback()
2091 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2092 - SSL_CTX_set_tlsext_servername_arg()
2093 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2095 openssl s_client has a new '-servername ...' option.
2097 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2098 '-key2 ...', '-servername_fatal' (subject to change). This allows
2099 testing the HostName extension for a specific single host name ('-cert'
2100 and '-key' remain fallbacks for handshakes without HostName
2101 negotiation). If the unrecognized_name alert has to be sent, this by
2102 default is a warning; it becomes fatal with the '-servername_fatal'
2105 [Peter Sylvester, Remy Allais, Christophe Renou]
2107 *) Whirlpool hash implementation is added.
2110 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
2111 bn(64,32). Because of instruction set limitations it doesn't have
2112 any negative impact on performance. This was done mostly in order
2113 to make it possible to share assembler modules, such as bn_mul_mont
2114 implementations, between 32- and 64-bit builds without hassle.
2117 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
2118 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
2122 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
2123 dedicated Montgomery multiplication procedure, is introduced.
2124 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
2125 "64-bit" performance on certain 32-bit targets.
2128 *) New option SSL_OP_NO_COMP to disable use of compression selectively
2129 in SSL structures. New SSL ctrl to set maximum send fragment size.
2130 Save memory by seeting the I/O buffer sizes dynamically instead of
2131 using the maximum available value.
2134 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
2135 in addition to the text details.
2138 *) Very, very preliminary EXPERIMENTAL support for printing of general
2139 ASN1 structures. This currently produces rather ugly output and doesn't
2140 handle several customised structures at all.
2143 *) Integrated support for PVK file format and some related formats such
2144 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
2145 these in the 'rsa' and 'dsa' utilities.
2148 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
2151 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
2152 place for the (very old) "NETSCAPE" format certificates which are now
2153 handled using new ASN1 code equivalents.
2156 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
2157 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
2158 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
2161 *) Modify CRL distribution points extension code to print out previously
2162 unsupported fields. Enhance extension setting code to allow setting of
2166 *) Add print and set support for Issuing Distribution Point CRL extension.
2169 *) Change 'Configure' script to enable Camellia by default.
2172 Changes between 0.9.8x and 0.9.8y [5 Feb 2013]
2174 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
2176 This addresses the flaw in CBC record processing discovered by
2177 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
2178 at: http://www.isg.rhul.ac.uk/tls/
2180 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2181 Security Group at Royal Holloway, University of London
2182 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
2183 Emilia Käsper for the initial patch.
2185 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
2187 *) Return an error when checking OCSP signatures when key is NULL.
2188 This fixes a DoS attack. (CVE-2013-0166)
2191 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
2192 the right response is stapled. Also change SSL_get_certificate()
2193 so it returns the certificate actually sent.
2194 See http://rt.openssl.org/Ticket/Display.html?id=2836.
2195 (This is a backport)
2196 [Rob Stradling <rob.stradling@comodo.com>]
2198 *) Fix possible deadlock when decoding public keys.
2201 Changes between 0.9.8w and 0.9.8x [10 May 2012]
2203 *) Sanity check record length before skipping explicit IV in DTLS
2206 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
2207 fuzzing as a service testing platform.
2211 *) Initialise tkeylen properly when encrypting CMS messages.
2212 Thanks to Solar Designer of Openwall for reporting this issue.
2215 Changes between 0.9.8v and 0.9.8w [23 Apr 2012]
2217 *) The fix for CVE-2012-2110 did not take into account that the
2218 'len' argument to BUF_MEM_grow and BUF_MEM_grow_clean is an
2219 int in OpenSSL 0.9.8, making it still vulnerable. Fix by
2220 rejecting negative len parameter. (CVE-2012-2131)
2221 [Tomas Hoger <thoger@redhat.com>]
2223 Changes between 0.9.8u and 0.9.8v [19 Apr 2012]
2225 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
2226 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
2227 in CRYPTO_realloc_clean.
2229 Thanks to Tavis Ormandy, Google Security Team, for discovering this
2230 issue and to Adam Langley <agl@chromium.org> for fixing it.
2232 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
2234 Changes between 0.9.8t and 0.9.8u [12 Mar 2012]
2236 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
2237 in CMS and PKCS7 code. When RSA decryption fails use a random key for
2238 content decryption and always return the same error. Note: this attack
2239 needs on average 2^20 messages so it only affects automated senders. The
2240 old behaviour can be reenabled in the CMS code by setting the
2241 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
2242 an MMA defence is not necessary.
2243 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
2244 this issue. (CVE-2012-0884)
2247 *) Fix CVE-2011-4619: make sure we really are receiving a
2248 client hello before rejecting multiple SGC restarts. Thanks to
2249 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
2252 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
2254 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
2255 Thanks to Antonio Martin, Enterprise Secure Access Research and
2256 Development, Cisco Systems, Inc. for discovering this bug and
2257 preparing a fix. (CVE-2012-0050)
2260 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
2262 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
2263 of the Vaudenay padding oracle attack on CBC mode encryption
2264 which enables an efficient plaintext recovery attack against
2265 the OpenSSL implementation of DTLS. Their attack exploits timing
2266 differences arising during decryption processing. A research
2267 paper describing this attack can be found at:
2268 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
2269 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2270 Security Group at Royal Holloway, University of London
2271 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
2272 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
2273 for preparing the fix. (CVE-2011-4108)
2274 [Robin Seggelmann, Michael Tuexen]
2276 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
2277 [Ben Laurie, Kasper <ekasper@google.com>]
2279 *) Clear bytes used for block padding of SSL 3.0 records.
2281 [Adam Langley (Google)]
2283 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
2284 Kadianakis <desnacked@gmail.com> for discovering this issue and
2285 Adam Langley for preparing the fix. (CVE-2011-4619)
2286 [Adam Langley (Google)]
2288 *) Prevent malformed RFC3779 data triggering an assertion failure.
2289 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
2290 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
2291 [Rob Austein <sra@hactrn.net>]
2293 *) Fix ssl_ciph.c set-up race.
2294 [Adam Langley (Google)]
2296 *) Fix spurious failures in ecdsatest.c.
2297 [Emilia Käsper (Google)]
2299 *) Fix the BIO_f_buffer() implementation (which was mixing different
2300 interpretations of the '..._len' fields).
2301 [Adam Langley (Google)]
2303 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
2304 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
2305 threads won't reuse the same blinding coefficients.
2307 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
2308 lock to call BN_BLINDING_invert_ex, and avoids one use of
2309 BN_BLINDING_update for each BN_BLINDING structure (previously,
2310 the last update always remained unused).
2311 [Emilia Käsper (Google)]
2313 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
2314 for multi-threaded use of ECDH.
2315 [Adam Langley (Google)]
2317 *) Fix x509_name_ex_d2i memory leak on bad inputs.
2320 *) Add protection against ECDSA timing attacks as mentioned in the paper
2321 by Billy Bob Brumley and Nicola Tuveri, see:
2323 http://eprint.iacr.org/2011/232.pdf
2325 [Billy Bob Brumley and Nicola Tuveri]
2327 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
2329 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
2330 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
2332 *) Fix bug in string printing code: if *any* escaping is enabled we must
2333 escape the escape character (backslash) or the resulting string is
2337 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
2339 *) Disable code workaround for ancient and obsolete Netscape browsers
2340 and servers: an attacker can use it in a ciphersuite downgrade attack.
2341 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
2344 *) Fixed J-PAKE implementation error, originally discovered by
2345 Sebastien Martini, further info and confirmation from Stefan
2346 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
2349 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
2351 *) Fix extension code to avoid race conditions which can result in a buffer
2352 overrun vulnerability: resumed sessions must not be modified as they can
2353 be shared by multiple threads. CVE-2010-3864
2356 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
2359 *) Don't reencode certificate when calculating signature: cache and use
2360 the original encoding instead. This makes signature verification of
2361 some broken encodings work correctly.
2364 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
2365 is also one of the inputs.
2366 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2368 *) Don't repeatedly append PBE algorithms to table if they already exist.
2369 Sort table on each new add. This effectively makes the table read only
2370 after all algorithms are added and subsequent calls to PKCS12_pbe_add
2374 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
2376 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
2379 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
2380 access or freeing data twice (CVE-2010-0742)
2381 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
2383 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
2384 common in certificates and some applications which only call
2385 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
2389 Reduce copying into .apps and .test in makevms.com
2390 Don't try to use blank CA certificate in CA.com
2391 Allow use of C files from original directories in maketests.com
2392 [Steven M. Schweda" <sms@antinode.info>]
2394 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
2396 *) When rejecting SSL/TLS records due to an incorrect version number, never
2397 update s->server with a new major version number. As of
2398 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
2399 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
2400 the previous behavior could result in a read attempt at NULL when
2401 receiving specific incorrect SSL/TLS records once record payload
2402 protection is active. (CVE-2010-0740)
2403 [Bodo Moeller, Adam Langley <agl@chromium.org>]
2405 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
2406 could be crashed if the relevant tables were not present (e.g. chrooted).
2407 [Tomas Hoger <thoger@redhat.com>]
2409 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
2411 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
2412 [Martin Olsson, Neel Mehta]
2414 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
2415 accommodate for stack sorting, always a write lock!).
2418 *) On some versions of WIN32 Heap32Next is very slow. This can cause
2419 excessive delays in the RAND_poll(): over a minute. As a workaround
2420 include a time check in the inner Heap32Next loop too.
2423 *) The code that handled flushing of data in SSL/TLS originally used the
2424 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
2425 the problem outlined in PR#1949. The fix suggested there however can
2426 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
2427 of Apache). So instead simplify the code to flush unconditionally.
2428 This should be fine since flushing with no data to flush is a no op.
2431 *) Handle TLS versions 2.0 and later properly and correctly use the
2432 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
2433 off ancient servers have a habit of sticking around for a while...
2436 *) Modify compression code so it frees up structures without using the
2437 ex_data callbacks. This works around a problem where some applications
2438 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
2439 restarting) then use compression (e.g. SSL with compression) later.
2440 This results in significant per-connection memory leaks and
2441 has caused some security issues including CVE-2008-1678 and
2445 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
2446 change when encrypting or decrypting.
2449 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
2450 connect and renegotiate with servers which do not support RI.
2451 Until RI is more widely deployed this option is enabled by default.
2454 *) Add "missing" ssl ctrls to clear options and mode.
2457 *) If client attempts to renegotiate and doesn't support RI respond with
2458 a no_renegotiation alert as required by RFC5746. Some renegotiating
2459 TLS clients will continue a connection gracefully when they receive
2460 the alert. Unfortunately OpenSSL mishandled this alert and would hang
2461 waiting for a server hello which it will never receive. Now we treat a
2462 received no_renegotiation alert as a fatal error. This is because
2463 applications requesting a renegotiation might well expect it to succeed
2464 and would have no code in place to handle the server denying it so the
2465 only safe thing to do is to terminate the connection.
2468 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
2469 peer supports secure renegotiation and 0 otherwise. Print out peer
2470 renegotiation support in s_client/s_server.
2473 *) Replace the highly broken and deprecated SPKAC certification method with
2474 the updated NID creation version. This should correctly handle UTF8.
2477 *) Implement RFC5746. Re-enable renegotiation but require the extension
2478 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
2479 turns out to be a bad idea. It has been replaced by
2480 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
2481 SSL_CTX_set_options(). This is really not recommended unless you
2482 know what you are doing.
2483 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
2485 *) Fixes to stateless session resumption handling. Use initial_ctx when
2486 issuing and attempting to decrypt tickets in case it has changed during
2487 servername handling. Use a non-zero length session ID when attempting
2488 stateless session resumption: this makes it possible to determine if
2489 a resumption has occurred immediately after receiving server hello
2490 (several places in OpenSSL subtly assume this) instead of later in
2494 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
2495 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
2496 fixes for a few places where the return code is not checked
2498 [Julia Lawall <julia@diku.dk>]
2500 *) Add --strict-warnings option to Configure script to include devteam
2501 warnings in other configurations.
2504 *) Add support for --libdir option and LIBDIR variable in makefiles. This
2505 makes it possible to install openssl libraries in locations which
2506 have names other than "lib", for example "/usr/lib64" which some
2508 [Steve Henson, based on patch from Jeremy Utley]
2510 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
2511 X690 8.9.12 and can produce some misleading textual output of OIDs.
2512 [Steve Henson, reported by Dan Kaminsky]
2514 *) Delete MD2 from algorithm tables. This follows the recommendation in
2515 several standards that it is not used in new applications due to
2516 several cryptographic weaknesses. For binary compatibility reasons
2517 the MD2 API is still compiled in by default.
2520 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
2524 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
2525 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
2527 [Guenter <lists@gknw.net>]
2529 *) Fix the server certificate chain building code to use X509_verify_cert(),
2530 it used to have an ad-hoc builder which was unable to cope with anything
2531 other than a simple chain.
2532 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
2534 *) Don't check self signed certificate signatures in X509_verify_cert()
2535 by default (a flag can override this): it just wastes time without
2536 adding any security. As a useful side effect self signed root CAs
2537 with non-FIPS digests are now usable in FIPS mode.
2540 *) In dtls1_process_out_of_seq_message() the check if the current message
2541 is already buffered was missing. For every new message was memory
2542 allocated, allowing an attacker to perform an denial of service attack
2543 with sending out of seq handshake messages until there is no memory
2544 left. Additionally every future messege was buffered, even if the
2545 sequence number made no sense and would be part of another handshake.
2546 So only messages with sequence numbers less than 10 in advance will be
2547 buffered. (CVE-2009-1378)
2548 [Robin Seggelmann, discovered by Daniel Mentz]
2550 *) Records are buffered if they arrive with a future epoch to be
2551 processed after finishing the corresponding handshake. There is
2552 currently no limitation to this buffer allowing an attacker to perform
2553 a DOS attack with sending records with future epochs until there is no
2554 memory left. This patch adds the pqueue_size() function to determine
2555 the size of a buffer and limits the record buffer to 100 entries.
2557 [Robin Seggelmann, discovered by Daniel Mentz]
2559 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
2560 parent structure is freed. (CVE-2009-1379)
2563 *) Handle non-blocking I/O properly in SSL_shutdown() call.
2564 [Darryl Miles <darryl-mailinglists@netbauds.net>]
2567 [Ilya O. <vrghost@gmail.com>]
2569 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
2571 *) Disable renegotiation completely - this fixes a severe security
2572 problem (CVE-2009-3555) at the cost of breaking all
2573 renegotiation. Renegotiation can be re-enabled by setting
2574 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
2575 run-time. This is really not recommended unless you know what
2579 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
2581 *) Don't set val to NULL when freeing up structures, it is freed up by
2582 underlying code. If sizeof(void *) > sizeof(long) this can result in
2583 zeroing past the valid field. (CVE-2009-0789)
2584 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
2586 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
2587 checked correctly. This would allow some invalid signed attributes to
2588 appear to verify correctly. (CVE-2009-0591)
2589 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2591 *) Reject UniversalString and BMPString types with invalid lengths. This
2592 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
2593 a legal length. (CVE-2009-0590)
2596 *) Set S/MIME signing as the default purpose rather than setting it
2597 unconditionally. This allows applications to override it at the store
2601 *) Permit restricted recursion of ASN1 strings. This is needed in practice
2602 to handle some structures.
2605 *) Improve efficiency of mem_gets: don't search whole buffer each time
2607 [Jeremy Shapiro <jnshapir@us.ibm.com>]
2609 *) New -hex option for openssl rand.
2612 *) Print out UTF8String and NumericString when parsing ASN1.
2615 *) Support NumericString type for name components.
2618 *) Allow CC in the environment to override the automatically chosen
2619 compiler. Note that nothing is done to ensure flags work with the
2623 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
2625 *) Properly check EVP_VerifyFinal() and similar return values
2627 [Ben Laurie, Bodo Moeller, Google Security Team]
2629 *) Enable TLS extensions by default.
2632 *) Allow the CHIL engine to be loaded, whether the application is
2633 multithreaded or not. (This does not release the developer from the
2634 obligation to set up the dynamic locking callbacks.)
2635 [Sander Temme <sander@temme.net>]
2637 *) Use correct exit code if there is an error in dgst command.
2638 [Steve Henson; problem pointed out by Roland Dirlewanger]
2640 *) Tweak Configure so that you need to say "experimental-jpake" to enable
2641 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
2644 *) Add experimental JPAKE support, including demo authentication in
2645 s_client and s_server.
2648 *) Set the comparison function in v3_addr_canonize().
2649 [Rob Austein <sra@hactrn.net>]
2651 *) Add support for XMPP STARTTLS in s_client.
2652 [Philip Paeps <philip@freebsd.org>]
2654 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
2655 to ensure that even with this option, only ciphersuites in the
2656 server's preference list will be accepted. (Note that the option
2657 applies only when resuming a session, so the earlier behavior was
2658 just about the algorithm choice for symmetric cryptography.)
2661 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
2663 *) Fix NULL pointer dereference if a DTLS server received
2664 ChangeCipherSpec as first record (CVE-2009-1386).
2667 *) Fix a state transition in s3_srvr.c and d1_srvr.c
2668 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
2671 *) The fix in 0.9.8c that supposedly got rid of unsafe
2672 double-checked locking was incomplete for RSA blinding,
2673 addressing just one layer of what turns out to have been
2674 doubly unsafe triple-checked locking.
2676 So now fix this for real by retiring the MONT_HELPER macro
2677 in crypto/rsa/rsa_eay.c.
2679 [Bodo Moeller; problem pointed out by Marius Schilder]
2681 *) Various precautionary measures:
2683 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
2685 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
2686 (NB: This would require knowledge of the secret session ticket key
2687 to exploit, in which case you'd be SOL either way.)
2689 - Change bn_nist.c so that it will properly handle input BIGNUMs
2690 outside the expected range.
2692 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
2695 [Neel Mehta, Bodo Moeller]
2697 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
2698 the load fails. Useful for distros.
2699 [Ben Laurie and the FreeBSD team]
2701 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
2704 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
2707 *) Expand ENGINE to support engine supplied SSL client certificate functions.
2709 This work was sponsored by Logica.
2712 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
2713 keystores. Support for SSL/TLS client authentication too.
2714 Not compiled unless enable-capieng specified to Configure.
2716 This work was sponsored by Logica.
2719 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
2720 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
2721 attribute creation routines such as certifcate requests and PKCS#12
2725 Changes between 0.9.8g and 0.9.8h [28 May 2008]
2727 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
2728 handshake which could lead to a cilent crash as found using the
2729 Codenomicon TLS test suite (CVE-2008-1672)
2730 [Steve Henson, Mark Cox]
2732 *) Fix double free in TLS server name extensions which could lead to
2733 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2736 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2738 Clear the error queue to ensure that error entries left from
2739 older function calls do not interfere with the correct operation.
2740 [Lutz Jaenicke, Erik de Castro Lopo]
2742 *) Remove root CA certificates of commercial CAs:
2744 The OpenSSL project does not recommend any specific CA and does not
2745 have any policy with respect to including or excluding any CA.
2746 Therefore it does not make any sense to ship an arbitrary selection
2747 of root CA certificates with the OpenSSL software.
2750 *) RSA OAEP patches to fix two separate invalid memory reads.
2751 The first one involves inputs when 'lzero' is greater than
2752 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2753 before the beginning of from). The second one involves inputs where
2754 the 'db' section contains nothing but zeroes (there is a one-byte
2755 invalid read after the end of 'db').
2756 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2758 *) Partial backport from 0.9.9-dev:
2760 Introduce bn_mul_mont (dedicated Montgomery multiplication
2761 procedure) as a candidate for BIGNUM assembler implementation.
2762 While 0.9.9-dev uses assembler for various architectures, only
2763 x86_64 is available by default here in the 0.9.8 branch, and
2764 32-bit x86 is available through a compile-time setting.
2766 To try the 32-bit x86 assembler implementation, use Configure
2767 option "enable-montasm" (which exists only for this backport).
2769 As "enable-montasm" for 32-bit x86 disclaims code stability
2770 anyway, in this constellation we activate additional code
2771 backported from 0.9.9-dev for further performance improvements,
2772 namely BN_from_montgomery_word. (To enable this otherwise,
2773 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2775 [Andy Polyakov (backport partially by Bodo Moeller)]
2777 *) Add TLS session ticket callback. This allows an application to set
2778 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2779 values. This is useful for key rollover for example where several key
2780 sets may exist with different names.
2783 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2784 This was broken until now in 0.9.8 releases, such that the only way
2785 a registered ENGINE could be used (assuming it initialises
2786 successfully on the host) was to explicitly set it as the default
2787 for the relevant algorithms. This is in contradiction with 0.9.7
2788 behaviour and the documentation. With this fix, when an ENGINE is
2789 registered into a given algorithm's table of implementations, the
2790 'uptodate' flag is reset so that auto-discovery will be used next
2791 time a new context for that algorithm attempts to select an
2793 [Ian Lister (tweaked by Geoff Thorpe)]
2795 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2796 implemention in the following ways:
2798 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2801 Lack of BER streaming support means one pass streaming processing is
2802 only supported if data is detached: setting the streaming flag is
2803 ignored for embedded content.
2805 CMS support is disabled by default and must be explicitly enabled
2806 with the enable-cms configuration option.
2809 *) Update the GMP engine glue to do direct copies between BIGNUM and
2810 mpz_t when openssl and GMP use the same limb size. Otherwise the
2811 existing "conversion via a text string export" trick is still used.
2812 [Paul Sheer <paulsheer@gmail.com>]
2814 *) Zlib compression BIO. This is a filter BIO which compressed and
2815 uncompresses any data passed through it.
2818 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2819 RFC3394 compatible AES key wrapping.
2822 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2823 sets string data without copying. X509_ALGOR_set0() and
2824 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2825 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2826 from an X509_ATTRIBUTE structure optionally checking it occurs only
2827 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2831 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2832 to get the expected BN_FLG_CONSTTIME behavior.
2833 [Bodo Moeller (Google)]
2837 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2838 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2839 - added some more tests to do_tests.pl
2840 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2841 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2842 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2843 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2844 - various changes to netware.pl to enable gcc-cross builds on Win32
2846 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2847 - various changes to fix missing prototype warnings
2848 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2849 - added AES, WHIRLPOOL and CPUID assembler code to build files
2850 - added missing AES assembler make rules to mk1mf.pl
2851 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2852 [Guenter Knauf <eflash@gmx.net>]
2854 *) Implement certificate status request TLS extension defined in RFC3546.
2855 A client can set the appropriate parameters and receive the encoded
2856 OCSP response via a callback. A server can query the supplied parameters
2857 and set the encoded OCSP response in the callback. Add simplified examples
2858 to s_client and s_server.
2861 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2863 *) Fix various bugs:
2864 + Binary incompatibility of ssl_ctx_st structure
2865 + DTLS interoperation with non-compliant servers
2866 + Don't call get_session_cb() without proposed session
2867 + Fix ia64 assembler code
2868 [Andy Polyakov, Steve Henson]
2870 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2872 *) DTLS Handshake overhaul. There were longstanding issues with
2873 OpenSSL DTLS implementation, which were making it impossible for
2874 RFC 4347 compliant client to communicate with OpenSSL server.
2875 Unfortunately just fixing these incompatibilities would "cut off"
2876 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2877 server keeps tolerating non RFC compliant syntax. The opposite is
2878 not true, 0.9.8f client can not communicate with earlier server.
2879 This update even addresses CVE-2007-4995.
2882 *) Changes to avoid need for function casts in OpenSSL: some compilers
2883 (gcc 4.2 and later) reject their use.
2884 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2887 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2888 RFC4507bis. The encrypted ticket format is an encrypted encoded
2889 SSL_SESSION structure, that way new session features are automatically
2892 If a client application caches session in an SSL_SESSION structure
2893 support is transparent because tickets are now stored in the encoded
2896 The SSL_CTX structure automatically generates keys for ticket
2897 protection in servers so again support should be possible
2898 with no application modification.
2900 If a client or server wishes to disable RFC4507 support then the option
2901 SSL_OP_NO_TICKET can be set.
2903 Add a TLS extension debugging callback to allow the contents of any client
2904 or server extensions to be examined.
2906 This work was sponsored by Google.
2909 *) Add initial support for TLS extensions, specifically for the server_name
2910 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2911 have new members for a host name. The SSL data structure has an
2912 additional member SSL_CTX *initial_ctx so that new sessions can be
2913 stored in that context to allow for session resumption, even after the
2914 SSL has been switched to a new SSL_CTX in reaction to a client's
2915 server_name extension.
2917 New functions (subject to change):
2919 SSL_get_servername()
2920 SSL_get_servername_type()
2923 New CTRL codes and macros (subject to change):
2925 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2926 - SSL_CTX_set_tlsext_servername_callback()
2927 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2928 - SSL_CTX_set_tlsext_servername_arg()
2929 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2931 openssl s_client has a new '-servername ...' option.
2933 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2934 '-key2 ...', '-servername_fatal' (subject to change). This allows
2935 testing the HostName extension for a specific single host name ('-cert'
2936 and '-key' remain fallbacks for handshakes without HostName
2937 negotiation). If the unrecognized_name alert has to be sent, this by
2938 default is a warning; it becomes fatal with the '-servername_fatal'
2941 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2943 *) Add AES and SSE2 assembly language support to VC++ build.
2946 *) Mitigate attack on final subtraction in Montgomery reduction.
2949 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2950 (which previously caused an internal error).
2953 *) Squeeze another 10% out of IGE mode when in != out.
2956 *) AES IGE mode speedup.
2957 [Dean Gaudet (Google)]
2959 *) Add the Korean symmetric 128-bit cipher SEED (see
2960 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2961 add SEED ciphersuites from RFC 4162:
2963 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2964 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2965 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2966 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2968 To minimize changes between patchlevels in the OpenSSL 0.9.8
2969 series, SEED remains excluded from compilation unless OpenSSL
2970 is configured with 'enable-seed'.
2971 [KISA, Bodo Moeller]
2973 *) Mitigate branch prediction attacks, which can be practical if a
2974 single processor is shared, allowing a spy process to extract
2975 information. For detailed background information, see
2976 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2977 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2978 and Necessary Software Countermeasures"). The core of the change
2979 are new versions BN_div_no_branch() and
2980 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2981 respectively, which are slower, but avoid the security-relevant
2982 conditional branches. These are automatically called by BN_div()
2983 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2984 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2985 remove a conditional branch.
2987 BN_FLG_CONSTTIME is the new name for the previous
2988 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2989 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2990 in the exponent causes BN_mod_exp_mont() to use the alternative
2991 implementation in BN_mod_exp_mont_consttime().) The old name
2992 remains as a deprecated alias.
2994 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2995 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2996 constant-time implementations for more than just exponentiation.
2997 Here too the old name is kept as a deprecated alias.
2999 BN_BLINDING_new() will now use BN_dup() for the modulus so that
3000 the BN_BLINDING structure gets an independent copy of the
3001 modulus. This means that the previous "BIGNUM *m" argument to
3002 BN_BLINDING_new() and to BN_BLINDING_create_param() now
3003 essentially becomes "const BIGNUM *m", although we can't actually
3004 change this in the header file before 0.9.9. It allows
3005 RSA_setup_blinding() to use BN_with_flags() on the modulus to
3006 enable BN_FLG_CONSTTIME.
3008 [Matthew D Wood (Intel Corp)]
3010 *) In the SSL/TLS server implementation, be strict about session ID
3011 context matching (which matters if an application uses a single
3012 external cache for different purposes). Previously,
3013 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
3014 set. This did ensure strict client verification, but meant that,
3015 with applications using a single external cache for quite
3016 different requirements, clients could circumvent ciphersuite
3017 restrictions for a given session ID context by starting a session
3018 in a different context.
3021 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3022 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3023 authentication-only ciphersuites.
3026 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
3027 not complete and could lead to a possible single byte overflow
3028 (CVE-2007-5135) [Ben Laurie]
3030 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
3032 *) Since AES128 and AES256 (and similarly Camellia128 and
3033 Camellia256) share a single mask bit in the logic of
3034 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3035 kludge to work properly if AES128 is available and AES256 isn't
3036 (or if Camellia128 is available and Camellia256 isn't).
3039 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
3040 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
3041 When a point or a seed is encoded in a BIT STRING, we need to
3042 prevent the removal of trailing zero bits to get the proper DER
3043 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
3044 of a NamedBitList, for which trailing 0 bits need to be removed.)
3047 *) Have SSL/TLS server implementation tolerate "mismatched" record
3048 protocol version while receiving ClientHello even if the
3049 ClientHello is fragmented. (The server can't insist on the
3050 particular protocol version it has chosen before the ServerHello
3051 message has informed the client about his choice.)
3054 *) Add RFC 3779 support.
3055 [Rob Austein for ARIN, Ben Laurie]
3057 *) Load error codes if they are not already present instead of using a
3058 static variable. This allows them to be cleanly unloaded and reloaded.
3059 Improve header file function name parsing.
3062 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
3063 or CAPABILITY handshake as required by RFCs.
3066 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
3068 *) Introduce limits to prevent malicious keys being able to
3069 cause a denial of service. (CVE-2006-2940)
3070 [Steve Henson, Bodo Moeller]
3072 *) Fix ASN.1 parsing of certain invalid structures that can result
3073 in a denial of service. (CVE-2006-2937) [Steve Henson]
3075 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3076 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3078 *) Fix SSL client code which could crash if connecting to a
3079 malicious SSLv2 server. (CVE-2006-4343)
3080 [Tavis Ormandy and Will Drewry, Google Security Team]
3082 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
3083 match only those. Before that, "AES256-SHA" would be interpreted
3084 as a pattern and match "AES128-SHA" too (since AES128-SHA got
3085 the same strength classification in 0.9.7h) as we currently only
3086 have a single AES bit in the ciphersuite description bitmap.
3087 That change, however, also applied to ciphersuite strings such as
3088 "RC4-MD5" that intentionally matched multiple ciphersuites --
3089 namely, SSL 2.0 ciphersuites in addition to the more common ones
3090 from SSL 3.0/TLS 1.0.
3092 So we change the selection algorithm again: Naming an explicit
3093 ciphersuite selects this one ciphersuite, and any other similar
3094 ciphersuite (same bitmap) from *other* protocol versions.
3095 Thus, "RC4-MD5" again will properly select both the SSL 2.0
3096 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
3098 Since SSL 2.0 does not have any ciphersuites for which the
3099 128/256 bit distinction would be relevant, this works for now.
3100 The proper fix will be to use different bits for AES128 and
3101 AES256, which would have avoided the problems from the beginning;
3102 however, bits are scarce, so we can only do this in a new release
3103 (not just a patchlevel) when we can change the SSL_CIPHER
3104 definition to split the single 'unsigned long mask' bitmap into
3105 multiple values to extend the available space.
3109 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
3111 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3112 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3114 *) Add AES IGE and biIGE modes.
3117 *) Change the Unix randomness entropy gathering to use poll() when
3118 possible instead of select(), since the latter has some
3119 undesirable limitations.
3120 [Darryl Miles via Richard Levitte and Bodo Moeller]
3122 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
3123 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
3124 cannot be implicitly activated as part of, e.g., the "AES" alias.
3125 However, please upgrade to OpenSSL 0.9.9[-dev] for
3126 non-experimental use of the ECC ciphersuites to get TLS extension
3127 support, which is required for curve and point format negotiation
3128 to avoid potential handshake problems.
3131 *) Disable rogue ciphersuites:
3133 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3134 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3135 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3137 The latter two were purportedly from
3138 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3141 Also deactivate the remaining ciphersuites from
3142 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3143 unofficial, and the ID has long expired.
3146 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3147 dual-core machines) and other potential thread-safety issues.
3150 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
3151 versions), which is now available for royalty-free use
3152 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
3153 Also, add Camellia TLS ciphersuites from RFC 4132.
3155 To minimize changes between patchlevels in the OpenSSL 0.9.8
3156 series, Camellia remains excluded from compilation unless OpenSSL
3157 is configured with 'enable-camellia'.
3160 *) Disable the padding bug check when compression is in use. The padding
3161 bug check assumes the first packet is of even length, this is not
3162 necessarily true if compresssion is enabled and can result in false
3163 positives causing handshake failure. The actual bug test is ancient
3164 code so it is hoped that implementations will either have fixed it by
3165 now or any which still have the bug do not support compression.
3168 Changes between 0.9.8a and 0.9.8b [04 May 2006]
3170 *) When applying a cipher rule check to see if string match is an explicit
3171 cipher suite and only match that one cipher suite if it is.
3174 *) Link in manifests for VC++ if needed.
3175 [Austin Ziegler <halostatue@gmail.com>]
3177 *) Update support for ECC-based TLS ciphersuites according to
3178 draft-ietf-tls-ecc-12.txt with proposed changes (but without
3179 TLS extensions, which are supported starting with the 0.9.9
3180 branch, not in the OpenSSL 0.9.8 branch).
3183 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
3184 opaque EVP_CIPHER_CTX handling.
3187 *) Fixes and enhancements to zlib compression code. We now only use
3188 "zlib1.dll" and use the default __cdecl calling convention on Win32
3189 to conform with the standards mentioned here:
3190 http://www.zlib.net/DLL_FAQ.txt
3191 Static zlib linking now works on Windows and the new --with-zlib-include
3192 --with-zlib-lib options to Configure can be used to supply the location
3193 of the headers and library. Gracefully handle case where zlib library
3197 *) Several fixes and enhancements to the OID generation code. The old code
3198 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
3199 handle numbers larger than ULONG_MAX, truncated printing and had a
3200 non standard OBJ_obj2txt() behaviour.
3203 *) Add support for building of engines under engine/ as shared libraries
3204 under VC++ build system.
3207 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
3208 Hopefully, we will not see any false combination of paths any more.
3211 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
3213 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3214 (part of SSL_OP_ALL). This option used to disable the
3215 countermeasure against man-in-the-middle protocol-version
3216 rollback in the SSL 2.0 server implementation, which is a bad
3217 idea. (CVE-2005-2969)
3219 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3220 for Information Security, National Institute of Advanced Industrial
3221 Science and Technology [AIST], Japan)]
3223 *) Add two function to clear and return the verify parameter flags.
3226 *) Keep cipherlists sorted in the source instead of sorting them at
3227 runtime, thus removing the need for a lock.
3230 *) Avoid some small subgroup attacks in Diffie-Hellman.
3231 [Nick Mathewson and Ben Laurie]
3233 *) Add functions for well-known primes.
3236 *) Extended Windows CE support.
3237 [Satoshi Nakamura and Andy Polyakov]
3239 *) Initialize SSL_METHOD structures at compile time instead of during
3240 runtime, thus removing the need for a lock.
3243 *) Make PKCS7_decrypt() work even if no certificate is supplied by
3244 attempting to decrypt each encrypted key in turn. Add support to
3248 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
3250 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
3253 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
3256 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
3257 key into the same file any more.
3260 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
3263 *) Add -utf8 command line and config file option to 'ca'.
3264 [Stefan <stf@udoma.org]
3266 *) Removed the macro des_crypt(), as it seems to conflict with some
3267 libraries. Use DES_crypt().
3270 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
3271 involves renaming the source and generated shared-libs for
3272 both. The engines will accept the corrected or legacy ids
3273 ('ncipher' and '4758_cca' respectively) when binding. NB,
3274 this only applies when building 'shared'.
3275 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
3277 *) Add attribute functions to EVP_PKEY structure. Modify
3278 PKCS12_create() to recognize a CSP name attribute and
3279 use it. Make -CSP option work again in pkcs12 utility.
3282 *) Add new functionality to the bn blinding code:
3283 - automatic re-creation of the BN_BLINDING parameters after
3284 a fixed number of uses (currently 32)
3285 - add new function for parameter creation
3286 - introduce flags to control the update behaviour of the
3287 BN_BLINDING parameters
3288 - hide BN_BLINDING structure
3289 Add a second BN_BLINDING slot to the RSA structure to improve
3290 performance when a single RSA object is shared among several
3294 *) Add support for DTLS.
3295 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
3297 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
3298 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
3301 *) Remove buggy and incomplete DH cert support from
3302 ssl/ssl_rsa.c and ssl/s3_both.c
3305 *) Use SHA-1 instead of MD5 as the default digest algorithm for
3306 the apps/openssl applications.
3309 *) Compile clean with "-Wall -Wmissing-prototypes
3310 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
3311 DEBUG_SAFESTACK must also be set.
3314 *) Change ./Configure so that certain algorithms can be disabled by default.
3315 The new counterpiece to "no-xxx" is "enable-xxx".
3317 The patented RC5 and MDC2 algorithms will now be disabled unless
3318 "enable-rc5" and "enable-mdc2", respectively, are specified.
3320 (IDEA remains enabled despite being patented. This is because IDEA
3321 is frequently required for interoperability, and there is no license
3322 fee for non-commercial use. As before, "no-idea" can be used to
3323 avoid this algorithm.)
3327 *) Add processing of proxy certificates (see RFC 3820). This work was
3328 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
3329 EGEE (Enabling Grids for E-science in Europe).
3332 *) RC4 performance overhaul on modern architectures/implementations, such
3333 as Intel P4, IA-64 and AMD64.
3336 *) New utility extract-section.pl. This can be used specify an alternative
3337 section number in a pod file instead of having to treat each file as
3338 a separate case in Makefile. This can be done by adding two lines to the
3341 =for comment openssl_section:XXX
3343 The blank line is mandatory.
3347 *) New arguments -certform, -keyform and -pass for s_client and s_server
3348 to allow alternative format key and certificate files and passphrase
3352 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
3353 update associated structures and add various utility functions.
3355 Add new policy related verify parameters, include policy checking in
3356 standard verify code. Enhance 'smime' application with extra parameters
3357 to support policy checking and print out.
3360 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
3361 Nehemiah processors. These extensions support AES encryption in hardware
3362 as well as RNG (though RNG support is currently disabled).
3363 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
3365 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
3368 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
3369 [Andy Polyakov and a number of other people]
3371 *) Improved PowerPC platform support. Most notably BIGNUM assembler
3372 implementation contributed by IBM.
3373 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
3375 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
3376 exponent rather than 'unsigned long'. There is a corresponding change to
3377 the new 'rsa_keygen' element of the RSA_METHOD structure.
3378 [Jelte Jansen, Geoff Thorpe]
3380 *) Functionality for creating the initial serial number file is now
3381 moved from CA.pl to the 'ca' utility with a new option -create_serial.
3383 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
3384 number file to 1, which is bound to cause problems. To avoid
3385 the problems while respecting compatibility between different 0.9.7
3386 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
3387 CA.pl for serial number initialization. With the new release 0.9.8,
3388 we can fix the problem directly in the 'ca' utility.)
3391 *) Reduced header interdepencies by declaring more opaque objects in
3392 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
3393 give fewer recursive includes, which could break lazy source code - so
3394 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
3395 developers should define this symbol when building and using openssl to
3396 ensure they track the recommended behaviour, interfaces, [etc], but
3397 backwards-compatible behaviour prevails when this isn't defined.
3400 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
3403 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
3404 This will generate a random key of the appropriate length based on the
3405 cipher context. The EVP_CIPHER can provide its own random key generation
3406 routine to support keys of a specific form. This is used in the des and
3407 3des routines to generate a key of the correct parity. Update S/MIME
3408 code to use new functions and hence generate correct parity DES keys.
3409 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
3410 valid (weak or incorrect parity).
3413 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
3414 as looking them up. This is useful when the verified structure may contain
3415 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
3416 present unless the new PKCS7_NO_CRL flag is asserted.
3419 *) Extend ASN1 oid configuration module. It now additionally accepts the
3422 shortName = some long name, 1.2.3.4
3425 *) Reimplemented the BN_CTX implementation. There is now no more static
3426 limitation on the number of variables it can handle nor the depth of the
3427 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
3428 information can now expand as required, and rather than having a single
3429 static array of bignums, BN_CTX now uses a linked-list of such arrays
3430 allowing it to expand on demand whilst maintaining the usefulness of
3431 BN_CTX's "bundling".
3434 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
3435 to allow all RSA operations to function using a single BN_CTX.
3438 *) Preliminary support for certificate policy evaluation and checking. This
3439 is initially intended to pass the tests outlined in "Conformance Testing
3440 of Relying Party Client Certificate Path Processing Logic" v1.07.
3443 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
3444 remained unused and not that useful. A variety of other little bignum
3445 tweaks and fixes have also been made continuing on from the audit (see
3449 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
3450 associated ASN1, EVP and SSL functions and old ASN1 macros.
3453 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
3454 and this should never fail. So the return value from the use of
3455 BN_set_word() (which can fail due to needless expansion) is now deprecated;
3456 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
3459 *) BN_CTX_get() should return zero-valued bignums, providing the same
3460 initialised value as BN_new().
3461 [Geoff Thorpe, suggested by Ulf Möller]
3463 *) Support for inhibitAnyPolicy certificate extension.
3466 *) An audit of the BIGNUM code is underway, for which debugging code is
3467 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
3468 is considered valid when processing BIGNUMs, and causes execution to
3469 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
3470 further steps are taken to deliberately pollute unused data in BIGNUM
3471 structures to try and expose faulty code further on. For now, openssl will
3472 (in its default mode of operation) continue to tolerate the inconsistent
3473 forms that it has tolerated in the past, but authors and packagers should
3474 consider trying openssl and their own applications when compiled with
3475 these debugging symbols defined. It will help highlight potential bugs in
3476 their own code, and will improve the test coverage for OpenSSL itself. At
3477 some point, these tighter rules will become openssl's default to improve
3478 maintainability, though the assert()s and other overheads will remain only
3479 in debugging configurations. See bn.h for more details.
3480 [Geoff Thorpe, Nils Larsch, Ulf Möller]
3482 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
3483 that can only be obtained through BN_CTX_new() (which implicitly
3484 initialises it). The presence of this function only made it possible
3485 to overwrite an existing structure (and cause memory leaks).
3488 *) Because of the callback-based approach for implementing LHASH as a
3489 template type, lh_insert() adds opaque objects to hash-tables and
3490 lh_doall() or lh_doall_arg() are typically used with a destructor callback
3491 to clean up those corresponding objects before destroying the hash table
3492 (and losing the object pointers). So some over-zealous constifications in
3493 LHASH have been relaxed so that lh_insert() does not take (nor store) the
3494 objects as "const" and the lh_doall[_arg] callback wrappers are not
3495 prototyped to have "const" restrictions on the object pointers they are
3496 given (and so aren't required to cast them away any more).
3499 *) The tmdiff.h API was so ugly and minimal that our own timing utility
3500 (speed) prefers to use its own implementation. The two implementations
3501 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
3502 its object type properly exposed (MS_TM) instead of casting to/from "char
3503 *". This may still change yet if someone realises MS_TM and "ms_time_***"
3504 aren't necessarily the greatest nomenclatures - but this is what was used
3505 internally to the implementation so I've used that for now.
3508 *) Ensure that deprecated functions do not get compiled when
3509 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
3510 the self-tests were still using deprecated key-generation functions so
3511 these have been updated also.
3514 *) Reorganise PKCS#7 code to separate the digest location functionality
3515 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
3516 New function PKCS7_set_digest() to set the digest type for PKCS#7
3517 digestedData type. Add additional code to correctly generate the
3518 digestedData type and add support for this type in PKCS7 initialization
3522 *) New function PKCS7_set0_type_other() this initializes a PKCS7
3523 structure of type "other".
3526 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
3527 sure the loop does correctly stop and breaking ("division by zero")
3528 modulus operations are not performed. The (pre-generated) prime
3529 table crypto/bn/bn_prime.h was already correct, but it could not be
3530 re-generated on some platforms because of the "division by zero"
3531 situation in the script.
3532 [Ralf S. Engelschall]
3534 *) Update support for ECC-based TLS ciphersuites according to
3535 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
3536 SHA-1 now is only used for "small" curves (where the
3537 representation of a field element takes up to 24 bytes); for
3538 larger curves, the field element resulting from ECDH is directly
3539 used as premaster secret.
3540 [Douglas Stebila (Sun Microsystems Laboratories)]
3542 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
3543 curve secp160r1 to the tests.
3544 [Douglas Stebila (Sun Microsystems Laboratories)]
3546 *) Add the possibility to load symbols globally with DSO.
3547 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
3549 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
3550 control of the error stack.
3553 *) Add support for STORE in ENGINE.
3556 *) Add the STORE type. The intention is to provide a common interface
3557 to certificate and key stores, be they simple file-based stores, or
3558 HSM-type store, or LDAP stores, or...
3559 NOTE: The code is currently UNTESTED and isn't really used anywhere.
3562 *) Add a generic structure called OPENSSL_ITEM. This can be used to
3563 pass a list of arguments to any function as well as provide a way
3564 for a function to pass data back to the caller.
3567 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
3568 works like BUF_strdup() but can be used to duplicate a portion of
3569 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
3573 *) Add the function sk_find_ex() which works like sk_find(), but will
3574 return an index to an element even if an exact match couldn't be
3575 found. The index is guaranteed to point at the element where the
3576 searched-for key would be inserted to preserve sorting order.
3579 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
3580 takes an extra flags argument for optional functionality. Currently,
3581 the following flags are defined:
3583 OBJ_BSEARCH_VALUE_ON_NOMATCH
3584 This one gets OBJ_bsearch_ex() to return a pointer to the first
3585 element where the comparing function returns a negative or zero
3588 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
3589 This one gets OBJ_bsearch_ex() to return a pointer to the first
3590 element where the comparing function returns zero. This is useful
3591 if there are more than one element where the comparing function
3595 *) Make it possible to create self-signed certificates with 'openssl ca'
3596 in such a way that the self-signed certificate becomes part of the
3597 CA database and uses the same mechanisms for serial number generation
3598 as all other certificate signing. The new flag '-selfsign' enables
3599 this functionality. Adapt CA.sh and CA.pl.in.
3602 *) Add functionality to check the public key of a certificate request
3603 against a given private. This is useful to check that a certificate
3604 request can be signed by that key (self-signing).
3607 *) Make it possible to have multiple active certificates with the same
3608 subject in the CA index file. This is done only if the keyword
3609 'unique_subject' is set to 'no' in the main CA section (default
3610 if 'CA_default') of the configuration file. The value is saved
3611 with the database itself in a separate index attribute file,
3612 named like the index file with '.attr' appended to the name.
3615 *) Generate muti valued AVAs using '+' notation in config files for
3619 *) Support for nameConstraints certificate extension.
3622 *) Support for policyConstraints certificate extension.
3625 *) Support for policyMappings certificate extension.
3628 *) Make sure the default DSA_METHOD implementation only uses its
3629 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
3630 and change its own handlers to be NULL so as to remove unnecessary
3631 indirection. This lets alternative implementations fallback to the
3632 default implementation more easily.
3635 *) Support for directoryName in GeneralName related extensions
3639 *) Make it possible to link applications using Makefile.shared.
3640 Make that possible even when linking against static libraries!
3643 *) Support for single pass processing for S/MIME signing. This now
3644 means that S/MIME signing can be done from a pipe, in addition
3645 cleartext signing (multipart/signed type) is effectively streaming
3646 and the signed data does not need to be all held in memory.
3648 This is done with a new flag PKCS7_STREAM. When this flag is set
3649 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
3650 is done after the data is output (and digests calculated) in
3651 SMIME_write_PKCS7().
3654 *) Add full support for -rpath/-R, both in shared libraries and
3655 applications, at least on the platforms where it's known how
3659 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
3660 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
3661 will now compute a table of multiples of the generator that
3662 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
3663 faster (notably in the case of a single point multiplication,
3664 scalar * generator).
3665 [Nils Larsch, Bodo Moeller]
3667 *) IPv6 support for certificate extensions. The various extensions
3668 which use the IP:a.b.c.d can now take IPv6 addresses using the
3669 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
3673 *) Added an ENGINE that implements RSA by performing private key
3674 exponentiations with the GMP library. The conversions to and from
3675 GMP's mpz_t format aren't optimised nor are any montgomery forms
3676 cached, and on x86 it appears OpenSSL's own performance has caught up.
3677 However there are likely to be other architectures where GMP could
3678 provide a boost. This ENGINE is not built in by default, but it can be
3679 specified at Configure time and should be accompanied by the necessary
3680 linker additions, eg;
3681 ./config -DOPENSSL_USE_GMP -lgmp
3684 *) "openssl engine" will not display ENGINE/DSO load failure errors when
3685 testing availability of engines with "-t" - the old behaviour is
3686 produced by increasing the feature's verbosity with "-tt".
3689 *) ECDSA routines: under certain error conditions uninitialized BN objects
3690 could be freed. Solution: make sure initialization is performed early
3691 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
3695 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
3696 and DH_METHOD (eg. by ENGINE implementations) to override the normal
3697 software implementations. For DSA and DH, parameter generation can
3698 also be overriden by providing the appropriate method callbacks.
3701 *) Change the "progress" mechanism used in key-generation and
3702 primality testing to functions that take a new BN_GENCB pointer in
3703 place of callback/argument pairs. The new API functions have "_ex"
3704 postfixes and the older functions are reimplemented as wrappers for
3705 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
3706 declarations of the old functions to help (graceful) attempts to
3707 migrate to the new functions. Also, the new key-generation API
3708 functions operate on a caller-supplied key-structure and return
3709 success/failure rather than returning a key or NULL - this is to
3710 help make "keygen" another member function of RSA_METHOD etc.
3712 Example for using the new callback interface:
3714 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
3718 BN_GENCB_set(&my_cb, my_callback, my_arg);
3720 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
3721 /* For the meaning of a, b in calls to my_callback(), see the
3722 * documentation of the function that calls the callback.
3723 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
3724 * my_callback should return 1 if it wants BN_is_prime_ex()
3725 * to continue, or 0 to stop.
3730 *) Change the ZLIB compression method to be stateful, and make it
3731 available to TLS with the number defined in
3732 draft-ietf-tls-compression-04.txt.
3735 *) Add the ASN.1 structures and functions for CertificatePair, which
3736 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3738 CertificatePair ::= SEQUENCE {
3739 forward [0] Certificate OPTIONAL,
3740 reverse [1] Certificate OPTIONAL,
3741 -- at least one of the pair shall be present -- }
3743 Also implement the PEM functions to read and write certificate
3744 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3746 This needed to be defined, mostly for the sake of the LDAP
3747 attribute crossCertificatePair, but may prove useful elsewhere as
3751 *) Make it possible to inhibit symlinking of shared libraries in
3752 Makefile.shared, for Cygwin's sake.
3755 *) Extend the BIGNUM API by creating a function
3756 void BN_set_negative(BIGNUM *a, int neg);
3757 and a macro that behave like
3758 int BN_is_negative(const BIGNUM *a);
3760 to avoid the need to access 'a->neg' directly in applications.
3763 *) Implement fast modular reduction for pseudo-Mersenne primes
3764 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3765 EC_GROUP_new_curve_GFp() will now automatically use this
3767 [Nils Larsch <nla@trustcenter.de>]
3769 *) Add new lock type (CRYPTO_LOCK_BN).
3772 *) Change the ENGINE framework to automatically load engines
3773 dynamically from specific directories unless they could be
3774 found to already be built in or loaded. Move all the
3775 current engines except for the cryptodev one to a new
3777 The engines in engines/ are built as shared libraries if
3778 the "shared" options was given to ./Configure or ./config.
3779 Otherwise, they are inserted in libcrypto.a.
3780 /usr/local/ssl/engines is the default directory for dynamic
3781 engines, but that can be overriden at configure time through
3782 the usual use of --prefix and/or --openssldir, and at run
3783 time with the environment variable OPENSSL_ENGINES.
3784 [Geoff Thorpe and Richard Levitte]
3786 *) Add Makefile.shared, a helper makefile to build shared
3787 libraries. Adapt Makefile.org.
3790 *) Add version info to Win32 DLLs.
3791 [Peter 'Luna' Runestig" <peter@runestig.com>]
3793 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3794 can be added using this API to created arbitrary PKCS#12
3795 files while avoiding the low level API.
3797 New options to PKCS12_create(), key or cert can be NULL and
3798 will then be omitted from the output file. The encryption
3799 algorithm NIDs can be set to -1 for no encryption, the mac
3800 iteration count can be set to 0 to omit the mac.
3802 Enhance pkcs12 utility by making the -nokeys and -nocerts
3803 options work when creating a PKCS#12 file. New option -nomac
3804 to omit the mac, NONE can be set for an encryption algorithm.
3805 New code is modified to use the enhanced PKCS12_create()
3806 instead of the low level API.
3809 *) Extend ASN1 encoder to support indefinite length constructed
3810 encoding. This can output sequences tags and octet strings in
3811 this form. Modify pk7_asn1.c to support indefinite length
3812 encoding. This is experimental and needs additional code to
3813 be useful, such as an ASN1 bio and some enhanced streaming
3816 Extend template encode functionality so that tagging is passed
3817 down to the template encoder.
3820 *) Let 'openssl req' fail if an argument to '-newkey' is not
3821 recognized instead of using RSA as a default.
3824 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3825 As these are not official, they are not included in "ALL";
3826 the "ECCdraft" ciphersuite group alias can be used to select them.
3827 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3829 *) Add ECDH engine support.
3830 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3832 *) Add ECDH in new directory crypto/ecdh/.
3833 [Douglas Stebila (Sun Microsystems Laboratories)]
3835 *) Let BN_rand_range() abort with an error after 100 iterations
3836 without success (which indicates a broken PRNG).
3839 *) Change BN_mod_sqrt() so that it verifies that the input value
3840 is really the square of the return value. (Previously,
3841 BN_mod_sqrt would show GIGO behaviour.)
3844 *) Add named elliptic curves over binary fields from X9.62, SECG,
3845 and WAP/WTLS; add OIDs that were still missing.
3847 [Sheueling Chang Shantz and Douglas Stebila
3848 (Sun Microsystems Laboratories)]
3850 *) Extend the EC library for elliptic curves over binary fields
3851 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3854 EC_GF2m_simple_method
3858 EC_GROUP_new_curve_GF2m
3859 EC_GROUP_set_curve_GF2m
3860 EC_GROUP_get_curve_GF2m
3861 EC_POINT_set_affine_coordinates_GF2m
3862 EC_POINT_get_affine_coordinates_GF2m
3863 EC_POINT_set_compressed_coordinates_GF2m
3865 Point compression for binary fields is disabled by default for
3866 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3869 As binary polynomials are represented as BIGNUMs, various members
3870 of the EC_GROUP and EC_POINT data structures can be shared
3871 between the implementations for prime fields and binary fields;
3872 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3873 are essentially identical to their ..._GFp counterparts.
3874 (For simplicity, the '..._GFp' prefix has been dropped from
3875 various internal method names.)
3877 An internal 'field_div' method (similar to 'field_mul' and
3878 'field_sqr') has been added; this is used only for binary fields.
3880 [Sheueling Chang Shantz and Douglas Stebila
3881 (Sun Microsystems Laboratories)]
3883 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3884 through methods ('mul', 'precompute_mult').
3886 The generic implementations (now internally called 'ec_wNAF_mul'
3887 and 'ec_wNAF_precomputed_mult') remain the default if these
3888 methods are undefined.
3890 [Sheueling Chang Shantz and Douglas Stebila
3891 (Sun Microsystems Laboratories)]
3893 *) New function EC_GROUP_get_degree, which is defined through
3894 EC_METHOD. For curves over prime fields, this returns the bit
3895 length of the modulus.
3897 [Sheueling Chang Shantz and Douglas Stebila
3898 (Sun Microsystems Laboratories)]
3900 *) New functions EC_GROUP_dup, EC_POINT_dup.
3901 (These simply call ..._new and ..._copy).
3903 [Sheueling Chang Shantz and Douglas Stebila
3904 (Sun Microsystems Laboratories)]
3906 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3907 Polynomials are represented as BIGNUMs (where the sign bit is not
3908 used) in the following functions [macros]:
3911 BN_GF2m_sub [= BN_GF2m_add]
3912 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3913 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3914 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3916 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3917 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3918 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3919 BN_GF2m_cmp [= BN_ucmp]
3921 (Note that only the 'mod' functions are actually for fields GF(2^m).
3922 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3924 For some functions, an the irreducible polynomial defining a
3925 field can be given as an 'unsigned int[]' with strictly
3926 decreasing elements giving the indices of those bits that are set;
3927 i.e., p[] represents the polynomial
3928 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3930 p[0] > p[1] > ... > p[k] = 0.
3931 This applies to the following functions:
3936 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3937 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3939 BN_GF2m_mod_sqrt_arr
3940 BN_GF2m_mod_solve_quad_arr
3944 Conversion can be performed by the following functions:
3949 bntest.c has additional tests for binary polynomial arithmetic.
3951 Two implementations for BN_GF2m_mod_div() are available.
3952 The default algorithm simply uses BN_GF2m_mod_inv() and
3953 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3954 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3955 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3957 [Sheueling Chang Shantz and Douglas Stebila
3958 (Sun Microsystems Laboratories)]
3960 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3961 functionality is disabled at compile-time.
3962 [Douglas Stebila <douglas.stebila@sun.com>]
3964 *) Change default behaviour of 'openssl asn1parse' so that more
3965 information is visible when viewing, e.g., a certificate:
3967 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3968 mode the content of non-printable OCTET STRINGs is output in a
3969 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3970 avoid the appearance of a printable string.
3971 [Nils Larsch <nla@trustcenter.de>]
3973 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3975 EC_GROUP_set_asn1_flag()
3976 EC_GROUP_get_asn1_flag()
3977 EC_GROUP_set_point_conversion_form()
3978 EC_GROUP_get_point_conversion_form()
3979 These control ASN1 encoding details:
3980 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3981 has been set to OPENSSL_EC_NAMED_CURVE.
3982 - Points are encoded in uncompressed form by default; options for
3983 asn1_for are as for point2oct, namely
3984 POINT_CONVERSION_COMPRESSED
3985 POINT_CONVERSION_UNCOMPRESSED
3986 POINT_CONVERSION_HYBRID
3988 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3991 EC_GROUP_get0_seed()
3992 EC_GROUP_get_seed_len()
3993 This is used only for ASN1 purposes (so far).
3994 [Nils Larsch <nla@trustcenter.de>]
3996 *) Add 'field_type' member to EC_METHOD, which holds the NID
3997 of the appropriate field type OID. The new function
3998 EC_METHOD_get_field_type() returns this value.
3999 [Nils Larsch <nla@trustcenter.de>]
4004 EC_POINT_point2hex()
4005 EC_POINT_hex2point()
4006 providing useful interfaces to EC_POINT_point2oct() and
4007 EC_POINT_oct2point().
4008 [Nils Larsch <nla@trustcenter.de>]
4010 *) Change internals of the EC library so that the functions
4011 EC_GROUP_set_generator()
4012 EC_GROUP_get_generator()
4013 EC_GROUP_get_order()
4014 EC_GROUP_get_cofactor()
4015 are implemented directly in crypto/ec/ec_lib.c and not dispatched
4016 to methods, which would lead to unnecessary code duplication when
4017 adding different types of curves.
4018 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
4020 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
4021 arithmetic, and such that modified wNAFs are generated
4022 (which avoid length expansion in many cases).
4025 *) Add a function EC_GROUP_check_discriminant() (defined via
4026 EC_METHOD) that verifies that the curve discriminant is non-zero.
4028 Add a function EC_GROUP_check() that makes some sanity tests
4029 on a EC_GROUP, its generator and order. This includes
4030 EC_GROUP_check_discriminant().
4031 [Nils Larsch <nla@trustcenter.de>]
4033 *) Add ECDSA in new directory crypto/ecdsa/.
4035 Add applications 'openssl ecparam' and 'openssl ecdsa'
4036 (these are based on 'openssl dsaparam' and 'openssl dsa').
4038 ECDSA support is also included in various other files across the
4039 library. Most notably,
4040 - 'openssl req' now has a '-newkey ecdsa:file' option;
4041 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
4042 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
4043 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
4044 them suitable for ECDSA where domain parameters must be
4045 extracted before the specific public key;
4046 - ECDSA engine support has been added.
4047 [Nils Larsch <nla@trustcenter.de>]
4049 *) Include some named elliptic curves, and add OIDs from X9.62,
4050 SECG, and WAP/WTLS. Each curve can be obtained from the new
4052 EC_GROUP_new_by_curve_name(),
4053 and the list of available named curves can be obtained with
4054 EC_get_builtin_curves().
4055 Also add a 'curve_name' member to EC_GROUP objects, which can be
4057 EC_GROUP_set_curve_name()
4058 EC_GROUP_get_curve_name()
4059 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
4061 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
4062 was actually never needed) and in BN_mul(). The removal in BN_mul()
4063 required a small change in bn_mul_part_recursive() and the addition
4064 of the functions bn_cmp_part_words(), bn_sub_part_words() and
4065 bn_add_part_words(), which do the same thing as bn_cmp_words(),
4066 bn_sub_words() and bn_add_words() except they take arrays with
4070 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
4072 *) Cleanse PEM buffers before freeing them since they may contain
4074 [Benjamin Bennett <ben@psc.edu>]
4076 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
4077 a ciphersuite string such as "DEFAULT:RSA" cannot enable
4078 authentication-only ciphersuites.
4081 *) Since AES128 and AES256 share a single mask bit in the logic of
4082 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
4083 kludge to work properly if AES128 is available and AES256 isn't.
4086 *) Expand security boundary to match 1.1.1 module.
4089 *) Remove redundant features: hash file source, editing of test vectors
4090 modify fipsld to use external fips_premain.c signature.
4093 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
4094 run algorithm test programs.
4097 *) Make algorithm test programs more tolerant of whitespace.
4100 *) Have SSL/TLS server implementation tolerate "mismatched" record
4101 protocol version while receiving ClientHello even if the
4102 ClientHello is fragmented. (The server can't insist on the
4103 particular protocol version it has chosen before the ServerHello
4104 message has informed the client about his choice.)
4107 *) Load error codes if they are not already present instead of using a
4108 static variable. This allows them to be cleanly unloaded and reloaded.
4111 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
4113 *) Introduce limits to prevent malicious keys being able to
4114 cause a denial of service. (CVE-2006-2940)
4115 [Steve Henson, Bodo Moeller]
4117 *) Fix ASN.1 parsing of certain invalid structures that can result
4118 in a denial of service. (CVE-2006-2937) [Steve Henson]
4120 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
4121 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
4123 *) Fix SSL client code which could crash if connecting to a
4124 malicious SSLv2 server. (CVE-2006-4343)
4125 [Tavis Ormandy and Will Drewry, Google Security Team]
4127 *) Change ciphersuite string processing so that an explicit
4128 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
4129 will no longer include "AES128-SHA"), and any other similar
4130 ciphersuite (same bitmap) from *other* protocol versions (so that
4131 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
4132 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
4133 changes from 0.9.8b and 0.9.8d.
4136 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
4138 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
4139 (CVE-2006-4339) [Ben Laurie and Google Security Team]
4141 *) Change the Unix randomness entropy gathering to use poll() when
4142 possible instead of select(), since the latter has some
4143 undesirable limitations.
4144 [Darryl Miles via Richard Levitte and Bodo Moeller]
4146 *) Disable rogue ciphersuites:
4148 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
4149 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4150 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
4152 The latter two were purportedly from
4153 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4156 Also deactive the remaining ciphersuites from
4157 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4158 unofficial, and the ID has long expired.
4161 *) Fix RSA blinding Heisenbug (problems sometimes occured on
4162 dual-core machines) and other potential thread-safety issues.
4165 Changes between 0.9.7i and 0.9.7j [04 May 2006]
4167 *) Adapt fipsld and the build system to link against the validated FIPS
4168 module in FIPS mode.
4171 *) Fixes for VC++ 2005 build under Windows.
4174 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
4175 from a Windows bash shell such as MSYS. It is autodetected from the
4176 "config" script when run from a VC++ environment. Modify standard VC++
4177 build to use fipscanister.o from the GNU make build.
4180 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
4182 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
4183 The value now differs depending on if you build for FIPS or not.
4184 BEWARE! A program linked with a shared FIPSed libcrypto can't be
4185 safely run with a non-FIPSed libcrypto, as it may crash because of
4186 the difference induced by this change.
4189 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
4191 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4192 (part of SSL_OP_ALL). This option used to disable the
4193 countermeasure against man-in-the-middle protocol-version
4194 rollback in the SSL 2.0 server implementation, which is a bad
4195 idea. (CVE-2005-2969)
4197 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4198 for Information Security, National Institute of Advanced Industrial
4199 Science and Technology [AIST], Japan)]
4201 *) Minimal support for X9.31 signatures and PSS padding modes. This is
4202 mainly for FIPS compliance and not fully integrated at this stage.
4205 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
4206 the exponentiation using a fixed-length exponent. (Otherwise,
4207 the information leaked through timing could expose the secret key
4208 after many signatures; cf. Bleichenbacher's attack on DSA with
4212 *) Make a new fixed-window mod_exp implementation the default for
4213 RSA, DSA, and DH private-key operations so that the sequence of
4214 squares and multiplies and the memory access pattern are
4215 independent of the particular secret key. This will mitigate
4216 cache-timing and potential related attacks.
4218 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
4219 and this is automatically used by BN_mod_exp_mont() if the new flag
4220 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
4221 will use this BN flag for private exponents unless the flag
4222 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
4223 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
4225 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
4227 *) Change the client implementation for SSLv23_method() and
4228 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
4229 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
4230 (Previously, the SSL 2.0 backwards compatible Client Hello
4231 message format would be used even with SSL_OP_NO_SSLv2.)
4234 *) Add support for smime-type MIME parameter in S/MIME messages which some
4238 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
4239 a threadsafe manner. Modify rsa code to use new function and add calls
4240 to dsa and dh code (which had race conditions before).
4243 *) Include the fixed error library code in the C error file definitions
4244 instead of fixing them up at runtime. This keeps the error code
4245 structures constant.
4248 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
4250 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
4253 *) Fixes for newer kerberos headers. NB: the casts are needed because
4254 the 'length' field is signed on one version and unsigned on another
4255 with no (?) obvious way to tell the difference, without these VC++
4256 complains. Also the "definition" of FAR (blank) is no longer included
4257 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
4258 some needed definitions.
4261 *) Undo Cygwin change.
4264 *) Added support for proxy certificates according to RFC 3820.
4265 Because they may be a security thread to unaware applications,
4266 they must be explicitely allowed in run-time. See
4267 docs/HOWTO/proxy_certificates.txt for further information.
4270 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
4272 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
4273 server and client random values. Previously
4274 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
4275 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
4277 This change has negligible security impact because:
4279 1. Server and client random values still have 24 bytes of pseudo random
4282 2. Server and client random values are sent in the clear in the initial
4285 3. The master secret is derived using the premaster secret (48 bytes in
4286 size for static RSA ciphersuites) as well as client server and random
4289 The OpenSSL team would like to thank the UK NISCC for bringing this issue
4292 [Stephen Henson, reported by UK NISCC]
4294 *) Use Windows randomness collection on Cygwin.
4297 *) Fix hang in EGD/PRNGD query when communication socket is closed
4298 prematurely by EGD/PRNGD.
4299 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
4301 *) Prompt for pass phrases when appropriate for PKCS12 input format.
4304 *) Back-port of selected performance improvements from development
4305 branch, as well as improved support for PowerPC platforms.
4308 *) Add lots of checks for memory allocation failure, error codes to indicate
4309 failure and freeing up memory if a failure occurs.
4310 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
4312 *) Add new -passin argument to dgst.
4315 *) Perform some character comparisons of different types in X509_NAME_cmp:
4316 this is needed for some certificates that reencode DNs into UTF8Strings
4317 (in violation of RFC3280) and can't or wont issue name rollover
4321 *) Make an explicit check during certificate validation to see that
4322 the CA setting in each certificate on the chain is correct. As a
4323 side effect always do the following basic checks on extensions,
4324 not just when there's an associated purpose to the check:
4326 - if there is an unhandled critical extension (unless the user
4327 has chosen to ignore this fault)
4328 - if the path length has been exceeded (if one is set at all)
4329 - that certain extensions fit the associated purpose (if one has
4333 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
4335 *) Avoid a race condition when CRLs are checked in a multi threaded
4336 environment. This would happen due to the reordering of the revoked
4337 entries during signature checking and serial number lookup. Now the
4338 encoding is cached and the serial number sort performed under a lock.
4339 Add new STACK function sk_is_sorted().
4342 *) Add Delta CRL to the extension code.
4345 *) Various fixes to s3_pkt.c so alerts are sent properly.
4346 [David Holmes <d.holmes@f5.com>]
4348 *) Reduce the chances of duplicate issuer name and serial numbers (in
4349 violation of RFC3280) using the OpenSSL certificate creation utilities.
4350 This is done by creating a random 64 bit value for the initial serial
4351 number when a serial number file is created or when a self signed
4352 certificate is created using 'openssl req -x509'. The initial serial
4353 number file is created using 'openssl x509 -next_serial' in CA.pl
4354 rather than being initialized to 1.
4357 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
4359 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4360 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4361 [Joe Orton, Steve Henson]
4363 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
4365 [Joe Orton, Steve Henson]
4367 *) Make it possible to have multiple active certificates with the same
4368 subject in the CA index file. This is done only if the keyword
4369 'unique_subject' is set to 'no' in the main CA section (default
4370 if 'CA_default') of the configuration file. The value is saved
4371 with the database itself in a separate index attribute file,
4372 named like the index file with '.attr' appended to the name.
4375 *) X509 verify fixes. Disable broken certificate workarounds when
4376 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
4377 keyUsage extension present. Don't accept CRLs with unhandled critical
4378 extensions: since verify currently doesn't process CRL extensions this
4379 rejects a CRL with *any* critical extensions. Add new verify error codes
4383 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
4384 A clarification of RFC2560 will require the use of OCTET STRINGs and
4385 some implementations cannot handle the current raw format. Since OpenSSL
4386 copies and compares OCSP nonces as opaque blobs without any attempt at
4387 parsing them this should not create any compatibility issues.
4390 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
4391 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
4392 this HMAC (and other) operations are several times slower than OpenSSL
4396 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
4397 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4399 *) Use the correct content when signing type "other".
4402 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
4404 *) Fix various bugs revealed by running the NISCC test suite:
4406 Stop out of bounds reads in the ASN1 code when presented with
4407 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4409 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
4411 If verify callback ignores invalid public key errors don't try to check
4412 certificate signature with the NULL public key.
4416 *) New -ignore_err option in ocsp application to stop the server
4417 exiting on the first error in a request.
4420 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4421 if the server requested one: as stated in TLS 1.0 and SSL 3.0
4425 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
4426 extra data after the compression methods not only for TLS 1.0
4427 but also for SSL 3.0 (as required by the specification).
4428 [Bodo Moeller; problem pointed out by Matthias Loepfe]
4430 *) Change X509_certificate_type() to mark the key as exported/exportable
4431 when it's 512 *bits* long, not 512 bytes.
4434 *) Change AES_cbc_encrypt() so it outputs exact multiple of
4435 blocks during encryption.
4438 *) Various fixes to base64 BIO and non blocking I/O. On write
4439 flushes were not handled properly if the BIO retried. On read
4440 data was not being buffered properly and had various logic bugs.
4441 This also affects blocking I/O when the data being decoded is a
4445 *) Various S/MIME bugfixes and compatibility changes:
4446 output correct application/pkcs7 MIME type if
4447 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
4448 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
4449 of files as .eml work). Correctly handle very long lines in MIME
4453 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
4455 *) Countermeasure against the Klima-Pokorny-Rosa extension of
4456 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
4457 a protocol version number mismatch like a decryption error
4458 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
4461 *) Turn on RSA blinding by default in the default implementation
4462 to avoid a timing attack. Applications that don't want it can call
4463 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
4464 They would be ill-advised to do so in most cases.
4465 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
4467 *) Change RSA blinding code so that it works when the PRNG is not
4468 seeded (in this case, the secret RSA exponent is abused as
4469 an unpredictable seed -- if it is not unpredictable, there
4470 is no point in blinding anyway). Make RSA blinding thread-safe
4471 by remembering the creator's thread ID in rsa->blinding and
4472 having all other threads use local one-time blinding factors
4473 (this requires more computation than sharing rsa->blinding, but
4474 avoids excessive locking; and if an RSA object is not shared
4475 between threads, blinding will still be very fast).
4478 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
4479 ENGINE as defaults for all supported algorithms irrespective of
4480 the 'flags' parameter. 'flags' is now honoured, so applications
4481 should make sure they are passing it correctly.
4484 *) Target "mingw" now allows native Windows code to be generated in
4485 the Cygwin environment as well as with the MinGW compiler.
4488 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
4490 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
4491 via timing by performing a MAC computation even if incorrect
4492 block cipher padding has been found. This is a countermeasure
4493 against active attacks where the attacker has to distinguish
4494 between bad padding and a MAC verification error. (CVE-2003-0078)
4496 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
4497 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
4498 Martin Vuagnoux (EPFL, Ilion)]
4500 *) Make the no-err option work as intended. The intention with no-err
4501 is not to have the whole error stack handling routines removed from
4502 libcrypto, it's only intended to remove all the function name and
4503 reason texts, thereby removing some of the footprint that may not
4504 be interesting if those errors aren't displayed anyway.
4506 NOTE: it's still possible for any application or module to have it's
4507 own set of error texts inserted. The routines are there, just not
4508 used by default when no-err is given.
4511 *) Add support for FreeBSD on IA64.
4512 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
4514 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
4515 Kerberos function mit_des_cbc_cksum(). Before this change,
4516 the value returned by DES_cbc_cksum() was like the one from
4517 mit_des_cbc_cksum(), except the bytes were swapped.
4518 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
4520 *) Allow an application to disable the automatic SSL chain building.
4521 Before this a rather primitive chain build was always performed in
4522 ssl3_output_cert_chain(): an application had no way to send the
4523 correct chain if the automatic operation produced an incorrect result.
4525 Now the chain builder is disabled if either:
4527 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
4529 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
4531 The reasoning behind this is that an application would not want the
4532 auto chain building to take place if extra chain certificates are
4533 present and it might also want a means of sending no additional
4534 certificates (for example the chain has two certificates and the
4538 *) Add the possibility to build without the ENGINE framework.
4539 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
4541 *) Under Win32 gmtime() can return NULL: check return value in
4542 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
4545 *) DSA routines: under certain error conditions uninitialized BN objects
4546 could be freed. Solution: make sure initialization is performed early
4547 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
4548 Nils Larsch <nla@trustcenter.de> via PR#459)
4551 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
4552 checked on reconnect on the client side, therefore session resumption
4553 could still fail with a "ssl session id is different" error. This
4554 behaviour is masked when SSL_OP_ALL is used due to
4555 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
4556 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
4557 followup to PR #377.
4560 *) IA-32 assembler support enhancements: unified ELF targets, support
4561 for SCO/Caldera platforms, fix for Cygwin shared build.
4564 *) Add support for FreeBSD on sparc64. As a consequence, support for
4565 FreeBSD on non-x86 processors is separate from x86 processors on
4566 the config script, much like the NetBSD support.
4567 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
4569 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
4571 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
4574 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
4575 code (06) was taken as the first octet of the session ID and the last
4576 octet was ignored consequently. As a result SSLv2 client side session
4577 caching could not have worked due to the session ID mismatch between
4579 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
4583 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
4584 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
4588 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
4589 seems that in spite of existing for more than a year, many application
4590 author have done nothing to provide the necessary callbacks, which
4591 means that this particular engine will not work properly anywhere.
4592 This is a very unfortunate situation which forces us, in the name
4593 of usability, to give the hw_ncipher.c a static lock, which is part
4595 NOTE: This is for the 0.9.7 series ONLY. This hack will never
4596 appear in 0.9.8 or later. We EXPECT application authors to have
4597 dealt properly with this when 0.9.8 is released (unless we actually
4598 make such changes in the libcrypto locking code that changes will
4599 have to be made anyway).
4602 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
4603 octets have been read, EOF or an error occurs. Without this change
4604 some truncated ASN1 structures will not produce an error.
4607 *) Disable Heimdal support, since it hasn't been fully implemented.
4608 Still give the possibility to force the use of Heimdal, but with
4609 warnings and a request that patches get sent to openssl-dev.
4612 *) Add the VC-CE target, introduce the WINCE sysname, and add
4613 INSTALL.WCE and appropriate conditionals to make it build.
4614 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
4616 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
4617 cygssl-x.y.z.dll, where x, y and z are the major, minor and
4618 edit numbers of the version.
4619 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
4621 *) Introduce safe string copy and catenation functions
4622 (BUF_strlcpy() and BUF_strlcat()).
4623 [Ben Laurie (CHATS) and Richard Levitte]
4625 *) Avoid using fixed-size buffers for one-line DNs.
4626 [Ben Laurie (CHATS)]
4628 *) Add BUF_MEM_grow_clean() to avoid information leakage when
4629 resizing buffers containing secrets, and use where appropriate.
4630 [Ben Laurie (CHATS)]
4632 *) Avoid using fixed size buffers for configuration file location.
4633 [Ben Laurie (CHATS)]
4635 *) Avoid filename truncation for various CA files.
4636 [Ben Laurie (CHATS)]
4638 *) Use sizeof in preference to magic numbers.
4639 [Ben Laurie (CHATS)]
4641 *) Avoid filename truncation in cert requests.
4642 [Ben Laurie (CHATS)]
4644 *) Add assertions to check for (supposedly impossible) buffer
4646 [Ben Laurie (CHATS)]
4648 *) Don't cache truncated DNS entries in the local cache (this could
4649 potentially lead to a spoofing attack).
4650 [Ben Laurie (CHATS)]
4652 *) Fix various buffers to be large enough for hex/decimal
4653 representations in a platform independent manner.
4654 [Ben Laurie (CHATS)]
4656 *) Add CRYPTO_realloc_clean() to avoid information leakage when
4657 resizing buffers containing secrets, and use where appropriate.
4658 [Ben Laurie (CHATS)]
4660 *) Add BIO_indent() to avoid much slightly worrying code to do
4662 [Ben Laurie (CHATS)]
4664 *) Convert sprintf()/BIO_puts() to BIO_printf().
4665 [Ben Laurie (CHATS)]
4667 *) buffer_gets() could terminate with the buffer only half
4669 [Ben Laurie (CHATS)]
4671 *) Add assertions to prevent user-supplied crypto functions from
4672 overflowing internal buffers by having large block sizes, etc.
4673 [Ben Laurie (CHATS)]
4675 *) New OPENSSL_assert() macro (similar to assert(), but enabled
4677 [Ben Laurie (CHATS)]
4679 *) Eliminate unused copy of key in RC4.
4680 [Ben Laurie (CHATS)]
4682 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
4683 [Ben Laurie (CHATS)]
4685 *) Fix off-by-one error in EGD path.
4686 [Ben Laurie (CHATS)]
4688 *) If RANDFILE path is too long, ignore instead of truncating.
4689 [Ben Laurie (CHATS)]
4691 *) Eliminate unused and incorrectly sized X.509 structure
4693 [Ben Laurie (CHATS)]
4695 *) Eliminate unused and dangerous function knumber().
4696 [Ben Laurie (CHATS)]
4698 *) Eliminate unused and dangerous structure, KSSL_ERR.
4699 [Ben Laurie (CHATS)]
4701 *) Protect against overlong session ID context length in an encoded
4702 session object. Since these are local, this does not appear to be
4704 [Ben Laurie (CHATS)]
4706 *) Change from security patch (see 0.9.6e below) that did not affect
4707 the 0.9.6 release series:
4709 Remote buffer overflow in SSL3 protocol - an attacker could
4710 supply an oversized master key in Kerberos-enabled versions.
4712 [Ben Laurie (CHATS)]
4714 *) Change the SSL kerb5 codes to match RFC 2712.
4717 *) Make -nameopt work fully for req and add -reqopt switch.
4718 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
4720 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
4721 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
4723 *) Make sure tests can be performed even if the corresponding algorithms
4724 have been removed entirely. This was also the last step to make
4725 OpenSSL compilable with DJGPP under all reasonable conditions.
4726 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
4728 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
4729 to allow version independent disabling of normally unselected ciphers,
4730 which may be activated as a side-effect of selecting a single cipher.
4732 (E.g., cipher list string "RSA" enables ciphersuites that are left
4733 out of "ALL" because they do not provide symmetric encryption.
4734 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
4735 [Lutz Jaenicke, Bodo Moeller]
4737 *) Add appropriate support for separate platform-dependent build
4738 directories. The recommended way to make a platform-dependent
4739 build directory is the following (tested on Linux), maybe with
4742 # Place yourself outside of the OpenSSL source tree. In
4743 # this example, the environment variable OPENSSL_SOURCE
4744 # is assumed to contain the absolute OpenSSL source directory.
4745 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
4746 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
4747 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
4748 mkdir -p `dirname $F`
4749 ln -s $OPENSSL_SOURCE/$F $F
4752 To be absolutely sure not to disturb the source tree, a "make clean"
4753 is a good thing. If it isn't successfull, don't worry about it,
4754 it probably means the source directory is very clean.
4757 *) Make sure any ENGINE control commands make local copies of string
4758 pointers passed to them whenever necessary. Otherwise it is possible
4759 the caller may have overwritten (or deallocated) the original string
4760 data when a later ENGINE operation tries to use the stored values.
4761 [Götz Babin-Ebell <babinebell@trustcenter.de>]
4763 *) Improve diagnostics in file reading and command-line digests.
4764 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
4766 *) Add AES modes CFB and OFB to the object database. Correct an
4767 error in AES-CFB decryption.
4770 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
4771 allows existing EVP_CIPHER_CTX structures to be reused after
4772 calling EVP_*Final(). This behaviour is used by encryption
4773 BIOs and some applications. This has the side effect that
4774 applications must explicitly clean up cipher contexts with
4775 EVP_CIPHER_CTX_cleanup() or they will leak memory.
4778 *) Check the values of dna and dnb in bn_mul_recursive before calling
4779 bn_mul_comba (a non zero value means the a or b arrays do not contain
4780 n2 elements) and fallback to bn_mul_normal if either is not zero.
4783 *) Fix escaping of non-ASCII characters when using the -subj option
4784 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
4787 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
4788 form for "surname", serialNumber has no short form.
4789 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
4790 therefore remove "mail" short name for "internet 7".
4791 The OID for unique identifiers in X509 certificates is
4792 x500UniqueIdentifier, not uniqueIdentifier.
4793 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
4796 *) Add an "init" command to the ENGINE config module and auto initialize
4797 ENGINEs. Without any "init" command the ENGINE will be initialized
4798 after all ctrl commands have been executed on it. If init=1 the
4799 ENGINE is initailized at that point (ctrls before that point are run
4800 on the uninitialized ENGINE and after on the initialized one). If
4801 init=0 then the ENGINE will not be iniatialized at all.
4804 *) Fix the 'app_verify_callback' interface so that the user-defined
4805 argument is actually passed to the callback: In the
4806 SSL_CTX_set_cert_verify_callback() prototype, the callback
4807 declaration has been changed from
4810 int (*cb)(X509_STORE_CTX *,void *);
4811 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
4812 i=s->ctx->app_verify_callback(&ctx)
4813 has been changed into
4814 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
4816 To update applications using SSL_CTX_set_cert_verify_callback(),
4817 a dummy argument can be added to their callback functions.
4818 [D. K. Smetters <smetters@parc.xerox.com>]
4820 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
4821 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
4823 *) Add and OPENSSL_LOAD_CONF define which will cause
4824 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
4825 This allows older applications to transparently support certain
4826 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
4827 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
4828 load the config file and OPENSSL_add_all_algorithms_conf() which will
4829 always load it have also been added.
4832 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4833 Adjust NIDs and EVP layer.
4834 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4836 *) Config modules support in openssl utility.
4838 Most commands now load modules from the config file,
4839 though in a few (such as version) this isn't done
4840 because it couldn't be used for anything.
4842 In the case of ca and req the config file used is
4843 the same as the utility itself: that is the -config
4844 command line option can be used to specify an
4848 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4849 use "openssl_conf" if filename is NULL use default openssl config file.
4852 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4853 config section name. Add a new flag to tolerate a missing config file
4854 and move code to CONF_modules_load_file().
4857 *) Support for crypto accelerator cards from Accelerated Encryption
4858 Processing, www.aep.ie. (Use engine 'aep')
4859 The support was copied from 0.9.6c [engine] and adapted/corrected
4860 to work with the new engine framework.
4861 [AEP Inc. and Richard Levitte]
4863 *) Support for SureWare crypto accelerator cards from Baltimore
4864 Technologies. (Use engine 'sureware')
4865 The support was copied from 0.9.6c [engine] and adapted
4866 to work with the new engine framework.
4869 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4870 make the newer ENGINE framework commands for the CHIL engine work.
4871 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4873 *) Make it possible to produce shared libraries on ReliantUNIX.
4874 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4876 *) Add the configuration target debug-linux-ppro.
4877 Make 'openssl rsa' use the general key loading routines
4878 implemented in apps.c, and make those routines able to
4879 handle the key format FORMAT_NETSCAPE and the variant
4881 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4883 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4884 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4886 *) Add -keyform to rsautl, and document -engine.
4887 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4889 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4890 BIO_R_NO_SUCH_FILE error code rather than the generic
4891 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4894 *) Add new functions
4896 ERR_peek_last_error_line
4897 ERR_peek_last_error_line_data.
4898 These are similar to
4901 ERR_peek_error_line_data,
4902 but report on the latest error recorded rather than the first one
4903 still in the error queue.
4904 [Ben Laurie, Bodo Moeller]
4906 *) default_algorithms option in ENGINE config module. This allows things
4908 default_algorithms = ALL
4909 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4912 *) Preliminary ENGINE config module.
4915 *) New experimental application configuration code.
4918 *) Change the AES code to follow the same name structure as all other
4919 symmetric ciphers, and behave the same way. Move everything to
4920 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4921 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4923 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4924 [Ben Laurie and Theo de Raadt]
4926 *) Add option to output public keys in req command.
4927 [Massimiliano Pala madwolf@openca.org]
4929 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4930 (up to about 10% better than before for P-192 and P-224).
4933 *) New functions/macros
4935 SSL_CTX_set_msg_callback(ctx, cb)
4936 SSL_CTX_set_msg_callback_arg(ctx, arg)
4937 SSL_set_msg_callback(ssl, cb)
4938 SSL_set_msg_callback_arg(ssl, arg)
4940 to request calling a callback function
4942 void cb(int write_p, int version, int content_type,
4943 const void *buf, size_t len, SSL *ssl, void *arg)
4945 whenever a protocol message has been completely received
4946 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4947 protocol version according to which the SSL library interprets
4948 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4949 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4950 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4951 specification (change_cipher_spec(20), alert(21), handshake(22)).
4952 'buf' and 'len' point to the actual message, 'ssl' to the
4953 SSL object, and 'arg' is the application-defined value set by
4954 SSL[_CTX]_set_msg_callback_arg().
4956 'openssl s_client' and 'openssl s_server' have new '-msg' options
4957 to enable a callback that displays all protocol messages.
4960 *) Change the shared library support so shared libraries are built as
4961 soon as the corresponding static library is finished, and thereby get
4962 openssl and the test programs linked against the shared library.
4963 This still only happens when the keyword "shard" has been given to
4964 the configuration scripts.
4966 NOTE: shared library support is still an experimental thing, and
4967 backward binary compatibility is still not guaranteed.
4968 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
4970 *) Add support for Subject Information Access extension.
4971 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4973 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
4974 additional bytes when new memory had to be allocated, not just
4975 when reusing an existing buffer.
4978 *) New command line and configuration option 'utf8' for the req command.
4979 This allows field values to be specified as UTF8 strings.
4982 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
4983 runs for the former and machine-readable output for the latter.
4986 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
4987 of the e-mail address in the DN (i.e., it will go into a certificate
4988 extension only). The new configuration file option 'email_in_dn = no'
4989 has the same effect.
4990 [Massimiliano Pala madwolf@openca.org]
4992 *) Change all functions with names starting with des_ to be starting
4993 with DES_ instead. Add wrappers that are compatible with libdes,
4994 but are named _ossl_old_des_*. Finally, add macros that map the
4995 des_* symbols to the corresponding _ossl_old_des_* if libdes
4996 compatibility is desired. If OpenSSL 0.9.6c compatibility is
4997 desired, the des_* symbols will be mapped to DES_*, with one
5000 Since we provide two compatibility mappings, the user needs to
5001 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
5002 compatibility is desired. The default (i.e., when that macro
5003 isn't defined) is OpenSSL 0.9.6c compatibility.
5005 There are also macros that enable and disable the support of old
5006 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
5007 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
5008 are defined, the default will apply: to support the old des routines.
5010 In either case, one must include openssl/des.h to get the correct
5011 definitions. Do not try to just include openssl/des_old.h, that
5014 NOTE: This is a major break of an old API into a new one. Software
5015 authors are encouraged to switch to the DES_ style functions. Some
5016 time in the future, des_old.h and the libdes compatibility functions
5017 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
5018 default), and then completely removed.
5021 *) Test for certificates which contain unsupported critical extensions.
5022 If such a certificate is found during a verify operation it is
5023 rejected by default: this behaviour can be overridden by either
5024 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
5025 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
5026 X509_supported_extension() has also been added which returns 1 if a
5027 particular extension is supported.
5030 *) Modify the behaviour of EVP cipher functions in similar way to digests
5031 to retain compatibility with existing code.
5034 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
5035 compatibility with existing code. In particular the 'ctx' parameter does
5036 not have to be to be initialized before the call to EVP_DigestInit() and
5037 it is tidied up after a call to EVP_DigestFinal(). New function
5038 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
5039 EVP_MD_CTX_copy() changed to not require the destination to be
5040 initialized valid and new function EVP_MD_CTX_copy_ex() added which
5041 requires the destination to be valid.
5043 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
5044 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
5047 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
5048 so that complete 'Handshake' protocol structures are kept in memory
5049 instead of overwriting 'msg_type' and 'length' with 'body' data.
5052 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
5053 [Massimo Santin via Richard Levitte]
5055 *) Major restructuring to the underlying ENGINE code. This includes
5056 reduction of linker bloat, separation of pure "ENGINE" manipulation
5057 (initialisation, etc) from functionality dealing with implementations
5058 of specific crypto iterfaces. This change also introduces integrated
5059 support for symmetric ciphers and digest implementations - so ENGINEs
5060 can now accelerate these by providing EVP_CIPHER and EVP_MD
5061 implementations of their own. This is detailed in crypto/engine/README
5062 as it couldn't be adequately described here. However, there are a few
5063 API changes worth noting - some RSA, DSA, DH, and RAND functions that
5064 were changed in the original introduction of ENGINE code have now
5065 reverted back - the hooking from this code to ENGINE is now a good
5066 deal more passive and at run-time, operations deal directly with
5067 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
5068 dereferencing through an ENGINE pointer any more. Also, the ENGINE
5069 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
5070 they were not being used by the framework as there is no concept of a
5071 BIGNUM_METHOD and they could not be generalised to the new
5072 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
5073 ENGINE_cpy() has been removed as it cannot be consistently defined in
5077 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
5080 *) Change mkdef.pl to sort symbols that get the same entry number,
5081 and make sure the automatically generated functions ERR_load_*
5082 become part of libeay.num as well.
5085 *) New function SSL_renegotiate_pending(). This returns true once
5086 renegotiation has been requested (either SSL_renegotiate() call
5087 or HelloRequest/ClientHello received from the peer) and becomes
5088 false once a handshake has been completed.
5089 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
5090 sends a HelloRequest, but does not ensure that a handshake takes
5091 place. SSL_renegotiate_pending() is useful for checking if the
5092 client has followed the request.)
5095 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
5096 By default, clients may request session resumption even during
5097 renegotiation (if session ID contexts permit); with this option,
5098 session resumption is possible only in the first handshake.
5100 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
5101 more bits available for options that should not be part of
5102 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
5105 *) Add some demos for certificate and certificate request creation.
5108 *) Make maximum certificate chain size accepted from the peer application
5109 settable (SSL*_get/set_max_cert_list()), as proposed by
5110 "Douglas E. Engert" <deengert@anl.gov>.
5113 *) Add support for shared libraries for Unixware-7
5114 (Boyd Lynn Gerber <gerberb@zenez.com>).
5117 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
5118 be done prior to destruction. Use this to unload error strings from
5119 ENGINEs that load their own error strings. NB: This adds two new API
5120 functions to "get" and "set" this destroy handler in an ENGINE.
5123 *) Alter all existing ENGINE implementations (except "openssl" and
5124 "openbsd") to dynamically instantiate their own error strings. This
5125 makes them more flexible to be built both as statically-linked ENGINEs
5126 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
5127 Also, add stub code to each that makes building them as self-contained
5128 shared-libraries easier (see README.ENGINE).
5131 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
5132 implementations into applications that are completely implemented in
5133 self-contained shared-libraries. The "dynamic" ENGINE exposes control
5134 commands that can be used to configure what shared-library to load and
5135 to control aspects of the way it is handled. Also, made an update to
5136 the README.ENGINE file that brings its information up-to-date and
5137 provides some information and instructions on the "dynamic" ENGINE
5138 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
5141 *) Make it possible to unload ranges of ERR strings with a new
5142 "ERR_unload_strings" function.
5145 *) Add a copy() function to EVP_MD.
5148 *) Make EVP_MD routines take a context pointer instead of just the
5149 md_data void pointer.
5152 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
5153 that the digest can only process a single chunk of data
5154 (typically because it is provided by a piece of
5155 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
5156 is only going to provide a single chunk of data, and hence the
5157 framework needn't accumulate the data for oneshot drivers.
5160 *) As with "ERR", make it possible to replace the underlying "ex_data"
5161 functions. This change also alters the storage and management of global
5162 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
5163 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
5164 index counters. The API functions that use this state have been changed
5165 to take a "class_index" rather than pointers to the class's local STACK
5166 and counter, and there is now an API function to dynamically create new
5167 classes. This centralisation allows us to (a) plug a lot of the
5168 thread-safety problems that existed, and (b) makes it possible to clean
5169 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
5170 such data would previously have always leaked in application code and
5171 workarounds were in place to make the memory debugging turn a blind eye
5172 to it. Application code that doesn't use this new function will still
5173 leak as before, but their memory debugging output will announce it now
5174 rather than letting it slide.
5176 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
5177 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
5178 has a return value to indicate success or failure.
5181 *) Make it possible to replace the underlying "ERR" functions such that the
5182 global state (2 LHASH tables and 2 locks) is only used by the "default"
5183 implementation. This change also adds two functions to "get" and "set"
5184 the implementation prior to it being automatically set the first time
5185 any other ERR function takes place. Ie. an application can call "get",
5186 pass the return value to a module it has just loaded, and that module
5187 can call its own "set" function using that value. This means the
5188 module's "ERR" operations will use (and modify) the error state in the
5189 application and not in its own statically linked copy of OpenSSL code.
5192 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
5193 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
5194 the operation, and provides a more encapsulated way for external code
5195 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
5196 to use these functions rather than manually incrementing the counts.
5198 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
5201 *) Add EVP test program.
5204 *) Add symmetric cipher support to ENGINE. Expect the API to change!
5207 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
5208 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
5209 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
5210 These allow a CRL to be built without having to access X509_CRL fields
5211 directly. Modify 'ca' application to use new functions.
5214 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
5215 bug workarounds. Rollback attack detection is a security feature.
5216 The problem will only arise on OpenSSL servers when TLSv1 is not
5217 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
5218 Software authors not wanting to support TLSv1 will have special reasons
5219 for their choice and can explicitly enable this option.
5220 [Bodo Moeller, Lutz Jaenicke]
5222 *) Rationalise EVP so it can be extended: don't include a union of
5223 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
5224 (similar to those existing for EVP_CIPHER_CTX).
5229 EVP_MD_CTX_init(&md); /* new function call */
5230 EVP_DigestInit(&md, EVP_sha1());
5231 EVP_DigestUpdate(&md, in, len);
5232 EVP_DigestFinal(&md, out, NULL);
5233 EVP_MD_CTX_cleanup(&md); /* new function call */
5237 *) Make DES key schedule conform to the usual scheme, as well as
5238 correcting its structure. This means that calls to DES functions
5239 now have to pass a pointer to a des_key_schedule instead of a
5240 plain des_key_schedule (which was actually always a pointer
5243 des_key_schedule ks;
5245 des_set_key_checked(..., &ks);
5246 des_ncbc_encrypt(..., &ks, ...);
5248 (Note that a later change renames 'des_...' into 'DES_...'.)
5251 *) Initial reduction of linker bloat: the use of some functions, such as
5252 PEM causes large amounts of unused functions to be linked in due to
5253 poor organisation. For example pem_all.c contains every PEM function
5254 which has a knock on effect of linking in large amounts of (unused)
5255 ASN1 code. Grouping together similar functions and splitting unrelated
5256 functions prevents this.
5259 *) Cleanup of EVP macros.
5262 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
5263 correct _ecb suffix.
5266 *) Add initial OCSP responder support to ocsp application. The
5267 revocation information is handled using the text based index
5268 use by the ca application. The responder can either handle
5269 requests generated internally, supplied in files (for example
5270 via a CGI script) or using an internal minimal server.
5273 *) Add configuration choices to get zlib compression for TLS.
5276 *) Changes to Kerberos SSL for RFC 2712 compliance:
5277 1. Implemented real KerberosWrapper, instead of just using
5278 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
5279 2. Implemented optional authenticator field of KerberosWrapper.
5281 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
5282 and authenticator structs; see crypto/krb5/.
5284 Generalized Kerberos calls to support multiple Kerberos libraries.
5285 [Vern Staats <staatsvr@asc.hpc.mil>,
5286 Jeffrey Altman <jaltman@columbia.edu>
5287 via Richard Levitte]
5289 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
5290 already does with RSA. testdsa.h now has 'priv_key/pub_key'
5291 values for each of the key sizes rather than having just
5292 parameters (and 'speed' generating keys each time).
5295 *) Speed up EVP routines.
5298 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
5299 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
5300 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
5301 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
5303 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
5304 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
5305 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
5308 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
5310 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
5313 *) Added the OS2-EMX target.
5314 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
5316 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
5317 to support NCONF routines in extension code. New function CONF_set_nconf()
5318 to allow functions which take an NCONF to also handle the old LHASH
5319 structure: this means that the old CONF compatible routines can be
5320 retained (in particular wrt extensions) without having to duplicate the
5321 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
5324 *) Enhance the general user interface with mechanisms for inner control
5325 and with possibilities to have yes/no kind of prompts.
5328 *) Change all calls to low level digest routines in the library and
5329 applications to use EVP. Add missing calls to HMAC_cleanup() and
5330 don't assume HMAC_CTX can be copied using memcpy().
5331 [Verdon Walker <VWalker@novell.com>, Steve Henson]
5333 *) Add the possibility to control engines through control names but with
5334 arbitrary arguments instead of just a string.
5335 Change the key loaders to take a UI_METHOD instead of a callback
5336 function pointer. NOTE: this breaks binary compatibility with earlier
5337 versions of OpenSSL [engine].
5338 Adapt the nCipher code for these new conditions and add a card insertion
5342 *) Enhance the general user interface with mechanisms to better support
5343 dialog box interfaces, application-defined prompts, the possibility
5344 to use defaults (for example default passwords from somewhere else)
5345 and interrupts/cancellations.
5348 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
5349 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
5352 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
5353 tidy up some unnecessarily weird code in 'sk_new()').
5354 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
5356 *) Change the key loading routines for ENGINEs to use the same kind
5357 callback (pem_password_cb) as all other routines that need this
5361 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
5362 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
5363 than this minimum value is recommended.
5366 *) New random seeder for OpenVMS, using the system process statistics
5367 that are easily reachable.
5370 *) Windows apparently can't transparently handle global
5371 variables defined in DLLs. Initialisations such as:
5373 const ASN1_ITEM *it = &ASN1_INTEGER_it;
5375 wont compile. This is used by the any applications that need to
5376 declare their own ASN1 modules. This was fixed by adding the option
5377 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
5378 needed for static libraries under Win32.
5381 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
5382 setting of purpose and trust fields. New X509_STORE trust and
5383 purpose functions and tidy up setting in other SSL functions.
5386 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
5387 structure. These are inherited by X509_STORE_CTX when it is
5388 initialised. This allows various defaults to be set in the
5389 X509_STORE structure (such as flags for CRL checking and custom
5390 purpose or trust settings) for functions which only use X509_STORE_CTX
5391 internally such as S/MIME.
5393 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
5394 trust settings if they are not set in X509_STORE. This allows X509_STORE
5395 purposes and trust (in S/MIME for example) to override any set by default.
5397 Add command line options for CRL checking to smime, s_client and s_server
5401 *) Initial CRL based revocation checking. If the CRL checking flag(s)
5402 are set then the CRL is looked up in the X509_STORE structure and
5403 its validity and signature checked, then if the certificate is found
5404 in the CRL the verify fails with a revoked error.
5406 Various new CRL related callbacks added to X509_STORE_CTX structure.
5408 Command line options added to 'verify' application to support this.
5410 This needs some additional work, such as being able to handle multiple
5411 CRLs with different times, extension based lookup (rather than just
5412 by subject name) and ultimately more complete V2 CRL extension
5416 *) Add a general user interface API (crypto/ui/). This is designed
5417 to replace things like des_read_password and friends (backward
5418 compatibility functions using this new API are provided).
5419 The purpose is to remove prompting functions from the DES code
5420 section as well as provide for prompting through dialog boxes in
5421 a window system and the like.
5424 *) Add "ex_data" support to ENGINE so implementations can add state at a
5425 per-structure level rather than having to store it globally.
5428 *) Make it possible for ENGINE structures to be copied when retrieved by
5429 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
5430 This causes the "original" ENGINE structure to act like a template,
5431 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
5432 operational state can be localised to each ENGINE structure, despite the
5433 fact they all share the same "methods". New ENGINE structures returned in
5434 this case have no functional references and the return value is the single
5435 structural reference. This matches the single structural reference returned
5436 by ENGINE_by_id() normally, when it is incremented on the pre-existing
5440 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
5441 needs to match any other type at all we need to manually clear the
5445 *) Changes to the "openssl engine" utility to include;
5446 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
5447 about an ENGINE's available control commands.
5448 - executing control commands from command line arguments using the
5449 '-pre' and '-post' switches. '-post' is only used if '-t' is
5450 specified and the ENGINE is successfully initialised. The syntax for
5451 the individual commands are colon-separated, for example;
5452 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
5455 *) New dynamic control command support for ENGINEs. ENGINEs can now
5456 declare their own commands (numbers), names (strings), descriptions,
5457 and input types for run-time discovery by calling applications. A
5458 subset of these commands are implicitly classed as "executable"
5459 depending on their input type, and only these can be invoked through
5460 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
5461 can be based on user input, config files, etc). The distinction is
5462 that "executable" commands cannot return anything other than a boolean
5463 result and can only support numeric or string input, whereas some
5464 discoverable commands may only be for direct use through
5465 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
5466 pointers, or other custom uses. The "executable" commands are to
5467 support parameterisations of ENGINE behaviour that can be
5468 unambiguously defined by ENGINEs and used consistently across any
5469 OpenSSL-based application. Commands have been added to all the
5470 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
5471 control over shared-library paths without source code alterations.
5474 *) Changed all ENGINE implementations to dynamically allocate their
5475 ENGINEs rather than declaring them statically. Apart from this being
5476 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
5477 this also allows the implementations to compile without using the
5478 internal engine_int.h header.
5481 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
5482 'const' value. Any code that should be able to modify a RAND_METHOD
5483 should already have non-const pointers to it (ie. they should only
5484 modify their own ones).
5487 *) Made a variety of little tweaks to the ENGINE code.
5488 - "atalla" and "ubsec" string definitions were moved from header files
5489 to C code. "nuron" string definitions were placed in variables
5490 rather than hard-coded - allowing parameterisation of these values
5491 later on via ctrl() commands.
5492 - Removed unused "#if 0"'d code.
5493 - Fixed engine list iteration code so it uses ENGINE_free() to release
5494 structural references.
5495 - Constified the RAND_METHOD element of ENGINE structures.
5496 - Constified various get/set functions as appropriate and added
5497 missing functions (including a catch-all ENGINE_cpy that duplicates
5498 all ENGINE values onto a new ENGINE except reference counts/state).
5499 - Removed NULL parameter checks in get/set functions. Setting a method
5500 or function to NULL is a way of cancelling out a previously set
5501 value. Passing a NULL ENGINE parameter is just plain stupid anyway
5502 and doesn't justify the extra error symbols and code.
5503 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
5504 flags from engine_int.h to engine.h.
5505 - Changed prototypes for ENGINE handler functions (init(), finish(),
5506 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
5509 *) Implement binary inversion algorithm for BN_mod_inverse in addition
5510 to the algorithm using long division. The binary algorithm can be
5511 used only if the modulus is odd. On 32-bit systems, it is faster
5512 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
5513 roughly 5-15% for 256-bit moduli), so we use it only for moduli
5514 up to 450 bits. In 64-bit environments, the binary algorithm
5515 appears to be advantageous for much longer moduli; here we use it
5516 for moduli up to 2048 bits.
5519 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
5520 could not support the combine flag in choice fields.
5523 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
5524 extensions from a certificate request to the certificate.
5527 *) Allow multiple 'certopt' and 'nameopt' options to be separated
5528 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
5529 file: this allows the display of the certificate about to be
5530 signed to be customised, to allow certain fields to be included
5531 or excluded and extension details. The old system didn't display
5532 multicharacter strings properly, omitted fields not in the policy
5533 and couldn't display additional details such as extensions.
5536 *) Function EC_POINTs_mul for multiple scalar multiplication
5537 of an arbitrary number of elliptic curve points
5538 \sum scalars[i]*points[i],
5539 optionally including the generator defined for the EC_GROUP:
5540 scalar*generator + \sum scalars[i]*points[i].
5542 EC_POINT_mul is a simple wrapper function for the typical case
5543 that the point list has just one item (besides the optional
5547 *) First EC_METHODs for curves over GF(p):
5549 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
5550 operations and provides various method functions that can also
5551 operate with faster implementations of modular arithmetic.
5553 EC_GFp_mont_method() reuses most functions that are part of
5554 EC_GFp_simple_method, but uses Montgomery arithmetic.
5556 [Bodo Moeller; point addition and point doubling
5557 implementation directly derived from source code provided by
5558 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
5560 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
5561 crypto/ec/ec_lib.c):
5563 Curves are EC_GROUP objects (with an optional group generator)
5564 based on EC_METHODs that are built into the library.
5566 Points are EC_POINT objects based on EC_GROUP objects.
5568 Most of the framework would be able to handle curves over arbitrary
5569 finite fields, but as there are no obvious types for fields other
5570 than GF(p), some functions are limited to that for now.
5573 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
5574 that the file contains a complete HTTP response.
5577 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
5578 change the def and num file printf format specifier from "%-40sXXX"
5579 to "%-39s XXX". The latter will always guarantee a space after the
5580 field while the former will cause them to run together if the field
5581 is 40 of more characters long.
5584 *) Constify the cipher and digest 'method' functions and structures
5585 and modify related functions to take constant EVP_MD and EVP_CIPHER
5589 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
5590 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
5593 *) Modify EVP_Digest*() routines so they now return values. Although the
5594 internal software routines can never fail additional hardware versions
5598 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
5600 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
5601 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
5604 ERR_R_NESTED_ASN1_ERROR
5606 ERR_R_MISSING_ASN1_EOS
5607 were 4 .. 9, conflicting with
5608 ERR_LIB_RSA (= ERR_R_RSA_LIB)
5610 ERR_LIB_PEM (= ERR_R_PEM_LIB).
5611 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
5613 Add new error code 'ERR_R_INTERNAL_ERROR'.
5616 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
5620 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
5621 sets the subject name for a new request or supersedes the
5622 subject name in a given request. Formats that can be parsed are
5623 'CN=Some Name, OU=myOU, C=IT'
5625 'CN=Some Name/OU=myOU/C=IT'.
5627 Add options '-batch' and '-verbose' to 'openssl req'.
5628 [Massimiliano Pala <madwolf@hackmasters.net>]
5630 *) Introduce the possibility to access global variables through
5631 functions on platform were that's the best way to handle exporting
5632 global variables in shared libraries. To enable this functionality,
5633 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
5634 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
5635 is normally done by Configure or something similar).
5637 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
5638 in the source file (foo.c) like this:
5640 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
5641 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
5643 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
5644 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
5646 OPENSSL_DECLARE_GLOBAL(int,foo);
5647 #define foo OPENSSL_GLOBAL_REF(foo)
5648 OPENSSL_DECLARE_GLOBAL(double,bar);
5649 #define bar OPENSSL_GLOBAL_REF(bar)
5651 The #defines are very important, and therefore so is including the
5652 header file everywhere where the defined globals are used.
5654 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
5655 of ASN.1 items, but that structure is a bit different.
5657 The largest change is in util/mkdef.pl which has been enhanced with
5658 better and easier to understand logic to choose which symbols should
5659 go into the Windows .def files as well as a number of fixes and code
5660 cleanup (among others, algorithm keywords are now sorted
5661 lexicographically to avoid constant rewrites).
5664 *) In BN_div() keep a copy of the sign of 'num' before writing the
5665 result to 'rm' because if rm==num the value will be overwritten
5666 and produce the wrong result if 'num' is negative: this caused
5667 problems with BN_mod() and BN_nnmod().
5670 *) Function OCSP_request_verify(). This checks the signature on an
5671 OCSP request and verifies the signer certificate. The signer
5672 certificate is just checked for a generic purpose and OCSP request
5676 *) Add OCSP_check_validity() function to check the validity of OCSP
5677 responses. OCSP responses are prepared in real time and may only
5678 be a few seconds old. Simply checking that the current time lies
5679 between thisUpdate and nextUpdate max reject otherwise valid responses
5680 caused by either OCSP responder or client clock inaccuracy. Instead
5681 we allow thisUpdate and nextUpdate to fall within a certain period of
5682 the current time. The age of the response can also optionally be
5683 checked. Two new options -validity_period and -status_age added to
5687 *) If signature or public key algorithm is unrecognized print out its
5688 OID rather that just UNKNOWN.
5691 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
5692 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
5693 ID to be generated from the issuer certificate alone which can then be
5694 passed to OCSP_id_issuer_cmp().
5697 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
5698 ASN1 modules to export functions returning ASN1_ITEM pointers
5699 instead of the ASN1_ITEM structures themselves. This adds several
5700 new macros which allow the underlying ASN1 function/structure to
5701 be accessed transparently. As a result code should not use ASN1_ITEM
5702 references directly (such as &X509_it) but instead use the relevant
5703 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
5704 use of the new ASN1 code on platforms where exporting structures
5705 is problematical (for example in shared libraries) but exporting
5706 functions returning pointers to structures is not.
5709 *) Add support for overriding the generation of SSL/TLS session IDs.
5710 These callbacks can be registered either in an SSL_CTX or per SSL.
5711 The purpose of this is to allow applications to control, if they wish,
5712 the arbitrary values chosen for use as session IDs, particularly as it
5713 can be useful for session caching in multiple-server environments. A
5714 command-line switch for testing this (and any client code that wishes
5715 to use such a feature) has been added to "s_server".
5716 [Geoff Thorpe, Lutz Jaenicke]
5718 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
5719 of the form '#if defined(...) || defined(...) || ...' and
5720 '#if !defined(...) && !defined(...) && ...'. This also avoids
5721 the growing number of special cases it was previously handling.
5724 *) Make all configuration macros available for application by making
5725 sure they are available in opensslconf.h, by giving them names starting
5726 with "OPENSSL_" to avoid conflicts with other packages and by making
5727 sure e_os2.h will cover all platform-specific cases together with
5729 Additionally, it is now possible to define configuration/platform-
5730 specific names (called "system identities"). In the C code, these
5731 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
5732 macro with the name beginning with "OPENSSL_SYS_", which is determined
5733 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
5737 *) New option -set_serial to 'req' and 'x509' this allows the serial
5738 number to use to be specified on the command line. Previously self
5739 signed certificates were hard coded with serial number 0 and the
5740 CA options of 'x509' had to use a serial number in a file which was
5744 *) New options to 'ca' utility to support V2 CRL entry extensions.
5745 Currently CRL reason, invalidity date and hold instruction are
5746 supported. Add new CRL extensions to V3 code and some new objects.
5749 *) New function EVP_CIPHER_CTX_set_padding() this is used to
5750 disable standard block padding (aka PKCS#5 padding) in the EVP
5751 API, which was previously mandatory. This means that the data is
5752 not padded in any way and so the total length much be a multiple
5753 of the block size, otherwise an error occurs.
5756 *) Initial (incomplete) OCSP SSL support.
5759 *) New function OCSP_parse_url(). This splits up a URL into its host,
5760 port and path components: primarily to parse OCSP URLs. New -url
5761 option to ocsp utility.
5764 *) New nonce behavior. The return value of OCSP_check_nonce() now
5765 reflects the various checks performed. Applications can decide
5766 whether to tolerate certain situations such as an absent nonce
5767 in a response when one was present in a request: the ocsp application
5768 just prints out a warning. New function OCSP_add1_basic_nonce()
5769 this is to allow responders to include a nonce in a response even if
5770 the request is nonce-less.
5773 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
5774 skipped when using openssl x509 multiple times on a single input file,
5775 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
5778 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
5779 set string type: to handle setting ASN1_TIME structures. Fix ca
5780 utility to correctly initialize revocation date of CRLs.
5783 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
5784 the clients preferred ciphersuites and rather use its own preferences.
5785 Should help to work around M$ SGC (Server Gated Cryptography) bug in
5786 Internet Explorer by ensuring unchanged hash method during stepup.
5787 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
5790 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
5791 to aes and add a new 'exist' option to print out symbols that don't
5795 *) Additional options to ocsp utility to allow flags to be set and
5796 additional certificates supplied.
5799 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
5800 OCSP client a number of certificate to only verify the response
5804 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
5805 handle the new API. Currently only ECB, CBC modes supported. Add new
5808 Add TLS AES ciphersuites as described in RFC3268, "Advanced
5809 Encryption Standard (AES) Ciphersuites for Transport Layer
5810 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
5811 not enabled by default and were not part of the "ALL" ciphersuite
5812 alias because they were not yet official; they could be
5813 explicitly requested by specifying the "AESdraft" ciphersuite
5814 group alias. In the final release of OpenSSL 0.9.7, the group
5815 alias is called "AES" and is part of "ALL".)
5816 [Ben Laurie, Steve Henson, Bodo Moeller]
5818 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
5819 request to response.
5822 *) Functions for OCSP responders. OCSP_request_onereq_count(),
5823 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
5824 extract information from a certificate request. OCSP_response_create()
5825 creates a response and optionally adds a basic response structure.
5826 OCSP_basic_add1_status() adds a complete single response to a basic
5827 response and returns the OCSP_SINGLERESP structure just added (to allow
5828 extensions to be included for example). OCSP_basic_add1_cert() adds a
5829 certificate to a basic response and OCSP_basic_sign() signs a basic
5830 response with various flags. New helper functions ASN1_TIME_check()
5831 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
5832 (converts ASN1_TIME to GeneralizedTime).
5835 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
5836 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
5837 structure from a certificate. X509_pubkey_digest() digests the public_key
5838 contents: this is used in various key identifiers.
5841 *) Make sk_sort() tolerate a NULL argument.
5842 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
5844 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
5845 passed by the function are trusted implicitly. If any of them signed the
5846 response then it is assumed to be valid and is not verified.
5849 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
5850 to data. This was previously part of the PKCS7 ASN1 code. This
5851 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
5852 [Steve Henson, reported by Kenneth R. Robinette
5853 <support@securenetterm.com>]
5855 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
5856 routines: without these tracing memory leaks is very painful.
5857 Fix leaks in PKCS12 and PKCS7 routines.
5860 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
5861 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
5862 effectively meant GeneralizedTime would never be used. Now it
5863 is initialised to -1 but X509_time_adj() now has to check the value
5864 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
5865 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
5866 [Steve Henson, reported by Kenneth R. Robinette
5867 <support@securenetterm.com>]
5869 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
5870 result in a zero length in the ASN1_INTEGER structure which was
5871 not consistent with the structure when d2i_ASN1_INTEGER() was used
5872 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
5873 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
5874 where it did not print out a minus for negative ASN1_INTEGER.
5877 *) Add summary printout to ocsp utility. The various functions which
5878 convert status values to strings have been renamed to:
5879 OCSP_response_status_str(), OCSP_cert_status_str() and
5880 OCSP_crl_reason_str() and are no longer static. New options
5881 to verify nonce values and to disable verification. OCSP response
5882 printout format cleaned up.
5885 *) Add additional OCSP certificate checks. These are those specified
5886 in RFC2560. This consists of two separate checks: the CA of the
5887 certificate being checked must either be the OCSP signer certificate
5888 or the issuer of the OCSP signer certificate. In the latter case the
5889 OCSP signer certificate must contain the OCSP signing extended key
5890 usage. This check is performed by attempting to match the OCSP
5891 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
5892 in the OCSP_CERTID structures of the response.
5895 *) Initial OCSP certificate verification added to OCSP_basic_verify()
5896 and related routines. This uses the standard OpenSSL certificate
5897 verify routines to perform initial checks (just CA validity) and
5898 to obtain the certificate chain. Then additional checks will be
5899 performed on the chain. Currently the root CA is checked to see
5900 if it is explicitly trusted for OCSP signing. This is used to set
5901 a root CA as a global signing root: that is any certificate that
5902 chains to that CA is an acceptable OCSP signing certificate.
5905 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
5906 extensions from a separate configuration file.
5907 As when reading extensions from the main configuration file,
5908 the '-extensions ...' option may be used for specifying the
5910 [Massimiliano Pala <madwolf@comune.modena.it>]
5912 *) New OCSP utility. Allows OCSP requests to be generated or
5913 read. The request can be sent to a responder and the output
5914 parsed, outputed or printed in text form. Not complete yet:
5915 still needs to check the OCSP response validity.
5918 *) New subcommands for 'openssl ca':
5919 'openssl ca -status <serial>' prints the status of the cert with
5920 the given serial number (according to the index file).
5921 'openssl ca -updatedb' updates the expiry status of certificates
5923 [Massimiliano Pala <madwolf@comune.modena.it>]
5925 *) New '-newreq-nodes' command option to CA.pl. This is like
5926 '-newreq', but calls 'openssl req' with the '-nodes' option
5927 so that the resulting key is not encrypted.
5928 [Damien Miller <djm@mindrot.org>]
5930 *) New configuration for the GNU Hurd.
5931 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
5933 *) Initial code to implement OCSP basic response verify. This
5934 is currently incomplete. Currently just finds the signer's
5935 certificate and verifies the signature on the response.
5938 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
5939 value of OPENSSLDIR. This is available via the new '-d' option
5940 to 'openssl version', and is also included in 'openssl version -a'.
5943 *) Allowing defining memory allocation callbacks that will be given
5944 file name and line number information in additional arguments
5945 (a const char* and an int). The basic functionality remains, as
5946 well as the original possibility to just replace malloc(),
5947 realloc() and free() by functions that do not know about these
5948 additional arguments. To register and find out the current
5949 settings for extended allocation functions, the following
5950 functions are provided:
5952 CRYPTO_set_mem_ex_functions
5953 CRYPTO_set_locked_mem_ex_functions
5954 CRYPTO_get_mem_ex_functions
5955 CRYPTO_get_locked_mem_ex_functions
5957 These work the same way as CRYPTO_set_mem_functions and friends.
5958 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
5959 extended allocation function is enabled.
5960 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
5961 a conventional allocation function is enabled.
5962 [Richard Levitte, Bodo Moeller]
5964 *) Finish off removing the remaining LHASH function pointer casts.
5965 There should no longer be any prototype-casting required when using
5966 the LHASH abstraction, and any casts that remain are "bugs". See
5967 the callback types and macros at the head of lhash.h for details
5968 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
5971 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
5972 If /dev/[u]random devices are not available or do not return enough
5973 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
5975 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
5976 /etc/entropy will be queried once each in this sequence, quering stops
5977 when enough entropy was collected without querying more sockets.
5980 *) Change the Unix RAND_poll() variant to be able to poll several
5981 random devices, as specified by DEVRANDOM, until a sufficient amount
5982 of data has been collected. We spend at most 10 ms on each file
5983 (select timeout) and read in non-blocking mode. DEVRANDOM now
5984 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
5985 (previously it was just the string "/dev/urandom"), so on typical
5986 platforms the 10 ms delay will never occur.
5987 Also separate out the Unix variant to its own file, rand_unix.c.
5988 For VMS, there's a currently-empty rand_vms.c.
5991 *) Move OCSP client related routines to ocsp_cl.c. These
5992 provide utility functions which an application needing
5993 to issue a request to an OCSP responder and analyse the
5994 response will typically need: as opposed to those which an
5995 OCSP responder itself would need which will be added later.
5997 OCSP_request_sign() signs an OCSP request with an API similar
5998 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
5999 response. OCSP_response_get1_basic() extracts basic response
6000 from response. OCSP_resp_find_status(): finds and extracts status
6001 information from an OCSP_CERTID structure (which will be created
6002 when the request structure is built). These are built from lower
6003 level functions which work on OCSP_SINGLERESP structures but
6004 wont normally be used unless the application wishes to examine
6005 extensions in the OCSP response for example.
6007 Replace nonce routines with a pair of functions.
6008 OCSP_request_add1_nonce() adds a nonce value and optionally
6009 generates a random value. OCSP_check_nonce() checks the
6010 validity of the nonce in an OCSP response.
6013 *) Change function OCSP_request_add() to OCSP_request_add0_id().
6014 This doesn't copy the supplied OCSP_CERTID and avoids the
6015 need to free up the newly created id. Change return type
6016 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
6017 This can then be used to add extensions to the request.
6018 Deleted OCSP_request_new(), since most of its functionality
6019 is now in OCSP_REQUEST_new() (and the case insensitive name
6020 clash) apart from the ability to set the request name which
6021 will be added elsewhere.
6024 *) Update OCSP API. Remove obsolete extensions argument from
6025 various functions. Extensions are now handled using the new
6026 OCSP extension code. New simple OCSP HTTP function which
6027 can be used to send requests and parse the response.
6030 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
6031 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
6032 uses the special reorder version of SET OF to sort the attributes
6033 and reorder them to match the encoded order. This resolves a long
6034 standing problem: a verify on a PKCS7 structure just after signing
6035 it used to fail because the attribute order did not match the
6036 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
6037 it uses the received order. This is necessary to tolerate some broken
6038 software that does not order SET OF. This is handled by encoding
6039 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
6040 to produce the required SET OF.
6043 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
6044 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
6045 files to get correct declarations of the ASN.1 item variables.
6048 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
6049 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
6050 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
6051 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
6052 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
6053 ASN1_ITEM and no wrapper functions.
6056 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
6057 replace the old function pointer based I/O routines. Change most of
6058 the *_d2i_bio() and *_d2i_fp() functions to use these.
6061 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
6062 lines, recognice more "algorithms" that can be deselected, and make
6063 it complain about algorithm deselection that isn't recognised.
6066 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
6067 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
6068 to use new functions. Add NO_ASN1_OLD which can be set to remove
6069 some old style ASN1 functions: this can be used to determine if old
6070 code will still work when these eventually go away.
6073 *) New extension functions for OCSP structures, these follow the
6074 same conventions as certificates and CRLs.
6077 *) New function X509V3_add1_i2d(). This automatically encodes and
6078 adds an extension. Its behaviour can be customised with various
6079 flags to append, replace or delete. Various wrappers added for
6080 certifcates and CRLs.
6083 *) Fix to avoid calling the underlying ASN1 print routine when
6084 an extension cannot be parsed. Correct a typo in the
6085 OCSP_SERVICELOC extension. Tidy up print OCSP format.
6088 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
6089 entries for variables.
6092 *) Add functionality to apps/openssl.c for detecting locking
6093 problems: As the program is single-threaded, all we have
6094 to do is register a locking callback using an array for
6095 storing which locks are currently held by the program.
6098 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
6099 SSL_get_ex_data_X509_STORE_idx(), which is used in
6100 ssl_verify_cert_chain() and thus can be called at any time
6101 during TLS/SSL handshakes so that thread-safety is essential.
6102 Unfortunately, the ex_data design is not at all suited
6103 for multi-threaded use, so it probably should be abolished.
6106 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
6107 [Broadcom, tweaked and integrated by Geoff Thorpe]
6109 *) Move common extension printing code to new function
6110 X509V3_print_extensions(). Reorganise OCSP print routines and
6111 implement some needed OCSP ASN1 functions. Add OCSP extensions.
6114 *) New function X509_signature_print() to remove duplication in some
6118 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
6119 set (this was treated exactly the same as SET OF previously). This
6120 is used to reorder the STACK representing the structure to match the
6121 encoding. This will be used to get round a problem where a PKCS7
6122 structure which was signed could not be verified because the STACK
6123 order did not reflect the encoded order.
6126 *) Reimplement the OCSP ASN1 module using the new code.
6129 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
6130 for its ASN1 operations. The old style function pointers still exist
6131 for now but they will eventually go away.
6134 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
6135 completely replaces the old ASN1 functionality with a table driven
6136 encoder and decoder which interprets an ASN1_ITEM structure describing
6137 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
6138 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
6139 has also been converted to the new form.
6142 *) Change BN_mod_exp_recp so that negative moduli are tolerated
6143 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
6144 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
6145 for negative moduli.
6148 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
6149 of not touching the result's sign bit.
6152 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
6156 *) Changed the LHASH code to use prototypes for callbacks, and created
6157 macros to declare and implement thin (optionally static) functions
6158 that provide type-safety and avoid function pointer casting for the
6159 type-specific callbacks.
6162 *) Added Kerberos Cipher Suites to be used with TLS, as written in
6164 [Veers Staats <staatsvr@asc.hpc.mil>,
6165 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
6167 *) Reformat the FAQ so the different questions and answers can be divided
6168 in sections depending on the subject.
6171 *) Have the zlib compression code load ZLIB.DLL dynamically under
6175 *) New function BN_mod_sqrt for computing square roots modulo a prime
6176 (using the probabilistic Tonelli-Shanks algorithm unless
6177 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
6178 be handled deterministically).
6179 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6181 *) Make BN_mod_inverse faster by explicitly handling small quotients
6182 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
6183 512 bits], about 30% for larger ones [1024 or 2048 bits].)
6186 *) New function BN_kronecker.
6189 *) Fix BN_gcd so that it works on negative inputs; the result is
6190 positive unless both parameters are zero.
6191 Previously something reasonably close to an infinite loop was
6192 possible because numbers could be growing instead of shrinking
6193 in the implementation of Euclid's algorithm.
6196 *) Fix BN_is_word() and BN_is_one() macros to take into account the
6197 sign of the number in question.
6199 Fix BN_is_word(a,w) to work correctly for w == 0.
6201 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
6202 because its test if the absolute value of 'a' equals 'w'.
6203 Note that BN_abs_is_word does *not* handle w == 0 reliably;
6204 it exists mostly for use in the implementations of BN_is_zero(),
6205 BN_is_one(), and BN_is_word().
6208 *) New function BN_swap.
6211 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
6212 the exponentiation functions are more likely to produce reasonable
6213 results on negative inputs.
6216 *) Change BN_mod_mul so that the result is always non-negative.
6217 Previously, it could be negative if one of the factors was negative;
6218 I don't think anyone really wanted that behaviour.
6221 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
6222 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
6223 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
6224 and add new functions:
6233 BN_mod_lshift1_quick
6237 These functions always generate non-negative results.
6239 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
6240 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
6242 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
6243 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
6244 be reduced modulo m.
6245 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6248 The following entry accidentally appeared in the CHANGES file
6249 distributed with OpenSSL 0.9.7. The modifications described in
6250 it do *not* apply to OpenSSL 0.9.7.
6252 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6253 was actually never needed) and in BN_mul(). The removal in BN_mul()
6254 required a small change in bn_mul_part_recursive() and the addition
6255 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6256 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6257 bn_sub_words() and bn_add_words() except they take arrays with
6262 *) In 'openssl passwd', verify passwords read from the terminal
6263 unless the '-salt' option is used (which usually means that
6264 verification would just waste user's time since the resulting
6265 hash is going to be compared with some given password hash)
6266 or the new '-noverify' option is used.
6268 This is an incompatible change, but it does not affect
6269 non-interactive use of 'openssl passwd' (passwords on the command
6270 line, '-stdin' option, '-in ...' option) and thus should not
6274 *) Remove all references to RSAref, since there's no more need for it.
6277 *) Make DSO load along a path given through an environment variable
6278 (SHLIB_PATH) with shl_load().
6281 *) Constify the ENGINE code as a result of BIGNUM constification.
6282 Also constify the RSA code and most things related to it. In a
6283 few places, most notable in the depth of the ASN.1 code, ugly
6284 casts back to non-const were required (to be solved at a later
6288 *) Make it so the openssl application has all engines loaded by default.
6291 *) Constify the BIGNUM routines a little more.
6294 *) Add the following functions:
6296 ENGINE_load_cswift()
6298 ENGINE_load_atalla()
6300 ENGINE_load_builtin_engines()
6302 That way, an application can itself choose if external engines that
6303 are built-in in OpenSSL shall ever be used or not. The benefit is
6304 that applications won't have to be linked with libdl or other dso
6305 libraries unless it's really needed.
6307 Changed 'openssl engine' to load all engines on demand.
6308 Changed the engine header files to avoid the duplication of some
6309 declarations (they differed!).
6312 *) 'openssl engine' can now list capabilities.
6315 *) Better error reporting in 'openssl engine'.
6318 *) Never call load_dh_param(NULL) in s_server.
6321 *) Add engine application. It can currently list engines by name and
6322 identity, and test if they are actually available.
6325 *) Improve RPM specification file by forcing symbolic linking and making
6326 sure the installed documentation is also owned by root.root.
6327 [Damien Miller <djm@mindrot.org>]
6329 *) Give the OpenSSL applications more possibilities to make use of
6330 keys (public as well as private) handled by engines.
6333 *) Add OCSP code that comes from CertCo.
6336 *) Add VMS support for the Rijndael code.
6339 *) Added untested support for Nuron crypto accelerator.
6342 *) Add support for external cryptographic devices. This code was
6343 previously distributed separately as the "engine" branch.
6344 [Geoff Thorpe, Richard Levitte]
6346 *) Rework the filename-translation in the DSO code. It is now possible to
6347 have far greater control over how a "name" is turned into a filename
6348 depending on the operating environment and any oddities about the
6349 different shared library filenames on each system.
6352 *) Support threads on FreeBSD-elf in Configure.
6355 *) Fix for SHA1 assembly problem with MASM: it produces
6356 warnings about corrupt line number information when assembling
6357 with debugging information. This is caused by the overlapping
6359 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
6362 NCONF_get_number() has no error checking at all. As a replacement,
6363 NCONF_get_number_e() is defined (_e for "error checking") and is
6364 promoted strongly. The old NCONF_get_number is kept around for
6365 binary backward compatibility.
6366 Make it possible for methods to load from something other than a BIO,
6367 by providing a function pointer that is given a name instead of a BIO.
6368 For example, this could be used to load configuration data from an
6372 *) Fix for non blocking accept BIOs. Added new I/O special reason
6373 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
6374 with non blocking I/O was not possible because no retry code was
6375 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
6379 *) Added the beginnings of Rijndael support.
6382 *) Fix for bug in DirectoryString mask setting. Add support for
6383 X509_NAME_print_ex() in 'req' and X509_print_ex() function
6384 to allow certificate printing to more controllable, additional
6385 'certopt' option to 'x509' to allow new printing options to be
6389 *) Clean old EAY MD5 hack from e_os.h.
6392 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
6394 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
6395 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
6396 [Joe Orton, Steve Henson]
6398 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
6400 *) Fix additional bug revealed by the NISCC test suite:
6402 Stop bug triggering large recursion when presented with
6403 certain ASN.1 tags (CVE-2003-0851)
6406 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
6408 *) Fix various bugs revealed by running the NISCC test suite:
6410 Stop out of bounds reads in the ASN1 code when presented with
6411 invalid tags (CVE-2003-0543 and CVE-2003-0544).
6413 If verify callback ignores invalid public key errors don't try to check
6414 certificate signature with the NULL public key.
6418 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
6419 if the server requested one: as stated in TLS 1.0 and SSL 3.0
6423 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
6424 extra data after the compression methods not only for TLS 1.0
6425 but also for SSL 3.0 (as required by the specification).
6426 [Bodo Moeller; problem pointed out by Matthias Loepfe]
6428 *) Change X509_certificate_type() to mark the key as exported/exportable
6429 when it's 512 *bits* long, not 512 bytes.
6432 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
6434 *) Countermeasure against the Klima-Pokorny-Rosa extension of
6435 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
6436 a protocol version number mismatch like a decryption error
6437 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
6440 *) Turn on RSA blinding by default in the default implementation
6441 to avoid a timing attack. Applications that don't want it can call
6442 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
6443 They would be ill-advised to do so in most cases.
6444 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
6446 *) Change RSA blinding code so that it works when the PRNG is not
6447 seeded (in this case, the secret RSA exponent is abused as
6448 an unpredictable seed -- if it is not unpredictable, there
6449 is no point in blinding anyway). Make RSA blinding thread-safe
6450 by remembering the creator's thread ID in rsa->blinding and
6451 having all other threads use local one-time blinding factors
6452 (this requires more computation than sharing rsa->blinding, but
6453 avoids excessive locking; and if an RSA object is not shared
6454 between threads, blinding will still be very fast).
6457 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
6459 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
6460 via timing by performing a MAC computation even if incorrrect
6461 block cipher padding has been found. This is a countermeasure
6462 against active attacks where the attacker has to distinguish
6463 between bad padding and a MAC verification error. (CVE-2003-0078)
6465 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
6466 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
6467 Martin Vuagnoux (EPFL, Ilion)]
6469 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
6471 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
6472 memory from it's contents. This is done with a counter that will
6473 place alternating values in each byte. This can be used to solve
6474 two issues: 1) the removal of calls to memset() by highly optimizing
6475 compilers, and 2) cleansing with other values than 0, since those can
6476 be read through on certain media, for example a swap space on disk.
6479 *) Bugfix: client side session caching did not work with external caching,
6480 because the session->cipher setting was not restored when reloading
6481 from the external cache. This problem was masked, when
6482 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
6483 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
6486 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
6487 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
6488 [Zeev Lieber <zeev-l@yahoo.com>]
6490 *) Undo an undocumented change introduced in 0.9.6e which caused
6491 repeated calls to OpenSSL_add_all_ciphers() and
6492 OpenSSL_add_all_digests() to be ignored, even after calling
6496 *) Change the default configuration reader to deal with last line not
6497 being properly terminated.
6500 *) Change X509_NAME_cmp() so it applies the special rules on handling
6501 DN values that are of type PrintableString, as well as RDNs of type
6502 emailAddress where the value has the type ia5String.
6503 [stefank@valicert.com via Richard Levitte]
6505 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
6506 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
6507 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
6508 the bitwise-OR of the two for use by the majority of applications
6509 wanting this behaviour, and update the docs. The documented
6510 behaviour and actual behaviour were inconsistent and had been
6511 changing anyway, so this is more a bug-fix than a behavioural
6513 [Geoff Thorpe, diagnosed by Nadav Har'El]
6515 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
6516 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
6519 *) Fix initialization code race conditions in
6520 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
6521 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
6522 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
6523 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
6524 ssl2_get_cipher_by_char(),
6525 ssl3_get_cipher_by_char().
6526 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
6528 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
6529 the cached sessions are flushed, as the remove_cb() might use ex_data
6530 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
6531 (see [openssl.org #212]).
6532 [Geoff Thorpe, Lutz Jaenicke]
6534 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
6535 length, instead of the encoding length to d2i_ASN1_OBJECT.
6538 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
6540 *) [In 0.9.6g-engine release:]
6541 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
6542 [Lynn Gazis <lgazis@rainbow.com>]
6544 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
6546 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
6547 and get fix the header length calculation.
6548 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
6549 Alon Kantor <alonk@checkpoint.com> (and others),
6552 *) Use proper error handling instead of 'assertions' in buffer
6553 overflow checks added in 0.9.6e. This prevents DoS (the
6554 assertions could call abort()).
6555 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
6557 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
6559 *) Add various sanity checks to asn1_get_length() to reject
6560 the ASN1 length bytes if they exceed sizeof(long), will appear
6561 negative or the content length exceeds the length of the
6563 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
6565 *) Fix cipher selection routines: ciphers without encryption had no flags
6566 for the cipher strength set and where therefore not handled correctly
6567 by the selection routines (PR #130).
6570 *) Fix EVP_dsa_sha macro.
6574 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
6575 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
6576 that was added in OpenSSL 0.9.6d.
6578 As the countermeasure turned out to be incompatible with some
6579 broken SSL implementations, the new option is part of SSL_OP_ALL.
6580 SSL_OP_ALL is usually employed when compatibility with weird SSL
6581 implementations is desired (e.g. '-bugs' option to 's_client' and
6582 's_server'), so the new option is automatically set in many
6586 *) Changes in security patch:
6588 Changes marked "(CHATS)" were sponsored by the Defense Advanced
6589 Research Projects Agency (DARPA) and Air Force Research Laboratory,
6590 Air Force Materiel Command, USAF, under agreement number
6593 *) Add various sanity checks to asn1_get_length() to reject
6594 the ASN1 length bytes if they exceed sizeof(long), will appear
6595 negative or the content length exceeds the length of the
6596 supplied buffer. (CVE-2002-0659)
6597 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
6599 *) Assertions for various potential buffer overflows, not known to
6601 [Ben Laurie (CHATS)]
6603 *) Various temporary buffers to hold ASCII versions of integers were
6604 too small for 64 bit platforms. (CVE-2002-0655)
6605 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
6607 *) Remote buffer overflow in SSL3 protocol - an attacker could
6608 supply an oversized session ID to a client. (CVE-2002-0656)
6609 [Ben Laurie (CHATS)]
6611 *) Remote buffer overflow in SSL2 protocol - an attacker could
6612 supply an oversized client master key. (CVE-2002-0656)
6613 [Ben Laurie (CHATS)]
6615 Changes between 0.9.6c and 0.9.6d [9 May 2002]
6617 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
6618 encoded as NULL) with id-dsa-with-sha1.
6619 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
6621 *) Check various X509_...() return values in apps/req.c.
6622 [Nils Larsch <nla@trustcenter.de>]
6624 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
6625 an end-of-file condition would erronously be flagged, when the CRLF
6626 was just at the end of a processed block. The bug was discovered when
6627 processing data through a buffering memory BIO handing the data to a
6628 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
6629 <ptsekov@syntrex.com> and Nedelcho Stanev.
6632 *) Implement a countermeasure against a vulnerability recently found
6633 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
6634 before application data chunks to avoid the use of known IVs
6635 with data potentially chosen by the attacker.
6638 *) Fix length checks in ssl3_get_client_hello().
6641 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
6642 to prevent ssl3_read_internal() from incorrectly assuming that
6643 ssl3_read_bytes() found application data while handshake
6644 processing was enabled when in fact s->s3->in_read_app_data was
6645 merely automatically cleared during the initial handshake.
6646 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
6648 *) Fix object definitions for Private and Enterprise: they were not
6649 recognized in their shortname (=lowercase) representation. Extend
6650 obj_dat.pl to issue an error when using undefined keywords instead
6651 of silently ignoring the problem (Svenning Sorensen
6652 <sss@sss.dnsalias.net>).
6655 *) Fix DH_generate_parameters() so that it works for 'non-standard'
6656 generators, i.e. generators other than 2 and 5. (Previously, the
6657 code did not properly initialise the 'add' and 'rem' values to
6658 BN_generate_prime().)
6660 In the new general case, we do not insist that 'generator' is
6661 actually a primitive root: This requirement is rather pointless;
6662 a generator of the order-q subgroup is just as good, if not
6666 *) Map new X509 verification errors to alerts. Discovered and submitted by
6667 Tom Wu <tom@arcot.com>.
6670 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
6671 returning non-zero before the data has been completely received
6672 when using non-blocking I/O.
6673 [Bodo Moeller; problem pointed out by John Hughes]
6675 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
6676 [Ben Laurie, Lutz Jaenicke]
6678 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
6679 Yoram Zahavi <YoramZ@gilian.com>).
6682 *) Add information about CygWin 1.3 and on, and preserve proper
6683 configuration for the versions before that.
6684 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
6686 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
6687 check whether we deal with a copy of a session and do not delete from
6688 the cache in this case. Problem reported by "Izhar Shoshani Levi"
6689 <izhar@checkpoint.com>.
6692 *) Do not store session data into the internal session cache, if it
6693 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
6694 flag is set). Proposed by Aslam <aslam@funk.com>.
6697 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
6701 *) [In 0.9.6d-engine release:]
6702 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
6703 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6705 *) Add the configuration target linux-s390x.
6706 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
6708 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
6709 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
6710 variable as an indication that a ClientHello message has been
6711 received. As the flag value will be lost between multiple
6712 invocations of ssl3_accept when using non-blocking I/O, the
6713 function may not be aware that a handshake has actually taken
6714 place, thus preventing a new session from being added to the
6717 To avoid this problem, we now set s->new_session to 2 instead of
6718 using a local variable.
6719 [Lutz Jaenicke, Bodo Moeller]
6721 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
6722 if the SSL_R_LENGTH_MISMATCH error is detected.
6723 [Geoff Thorpe, Bodo Moeller]
6725 *) New 'shared_ldflag' column in Configure platform table.
6728 *) Fix EVP_CIPHER_mode macro.
6729 ["Dan S. Camper" <dan@bti.net>]
6731 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
6732 type, we must throw them away by setting rr->length to 0.
6733 [D P Chang <dpc@qualys.com>]
6735 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
6737 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
6738 <Dominikus.Scherkl@biodata.com>. (The previous implementation
6739 worked incorrectly for those cases where range = 10..._2 and
6740 3*range is two bits longer than range.)
6743 *) Only add signing time to PKCS7 structures if it is not already
6747 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
6748 OBJ_ld_ce should be OBJ_id_ce.
6749 Also some ip-pda OIDs in crypto/objects/objects.txt were
6750 incorrect (cf. RFC 3039).
6751 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
6753 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
6754 returns early because it has nothing to do.
6755 [Andy Schneider <andy.schneider@bjss.co.uk>]
6757 *) [In 0.9.6c-engine release:]
6758 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
6759 [Andy Schneider <andy.schneider@bjss.co.uk>]
6761 *) [In 0.9.6c-engine release:]
6762 Add support for Cryptographic Appliance's keyserver technology.
6763 (Use engine 'keyclient')
6764 [Cryptographic Appliances and Geoff Thorpe]
6766 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
6767 is called via tools/c89.sh because arguments have to be
6768 rearranged (all '-L' options must appear before the first object
6770 [Richard Shapiro <rshapiro@abinitio.com>]
6772 *) [In 0.9.6c-engine release:]
6773 Add support for Broadcom crypto accelerator cards, backported
6775 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
6777 *) [In 0.9.6c-engine release:]
6778 Add support for SureWare crypto accelerator cards from
6779 Baltimore Technologies. (Use engine 'sureware')
6780 [Baltimore Technologies and Mark Cox]
6782 *) [In 0.9.6c-engine release:]
6783 Add support for crypto accelerator cards from Accelerated
6784 Encryption Processing, www.aep.ie. (Use engine 'aep')
6785 [AEP Inc. and Mark Cox]
6787 *) Add a configuration entry for gcc on UnixWare.
6788 [Gary Benson <gbenson@redhat.com>]
6790 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
6791 messages are stored in a single piece (fixed-length part and
6792 variable-length part combined) and fix various bugs found on the way.
6795 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
6796 instead. BIO_gethostbyname() does not know what timeouts are
6797 appropriate, so entries would stay in cache even when they have
6799 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
6801 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
6802 faced with a pathologically small ClientHello fragment that does
6803 not contain client_version: Instead of aborting with an error,
6804 simply choose the highest available protocol version (i.e.,
6805 TLS 1.0 unless it is disabled). In practice, ClientHello
6806 messages are never sent like this, but this change gives us
6807 strictly correct behaviour at least for TLS.
6810 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
6811 never resets s->method to s->ctx->method when called from within
6812 one of the SSL handshake functions.
6813 [Bodo Moeller; problem pointed out by Niko Baric]
6815 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
6816 (sent using the client's version number) if client_version is
6817 smaller than the protocol version in use. Also change
6818 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
6819 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
6820 the client will at least see that alert.
6823 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
6827 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
6828 client receives HelloRequest while in a handshake.
6829 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
6831 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
6832 should end in 'break', not 'goto end' which circumvents various
6833 cleanups done in state SSL_ST_OK. But session related stuff
6834 must be disabled for SSL_ST_OK in the case that we just sent a
6837 Also avoid some overhead by not calling ssl_init_wbio_buffer()
6838 before just sending a HelloRequest.
6839 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
6841 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
6842 reveal whether illegal block cipher padding was found or a MAC
6843 verification error occured. (Neither SSLerr() codes nor alerts
6844 are directly visible to potential attackers, but the information
6845 may leak via logfiles.)
6847 Similar changes are not required for the SSL 2.0 implementation
6848 because the number of padding bytes is sent in clear for SSL 2.0,
6849 and the extra bytes are just ignored. However ssl/s2_pkt.c
6850 failed to verify that the purported number of padding bytes is in
6854 *) Add OpenUNIX-8 support including shared libraries
6855 (Boyd Lynn Gerber <gerberb@zenez.com>).
6858 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
6859 'wristwatch attack' using huge encoding parameters (cf.
6860 James H. Manger's CRYPTO 2001 paper). Note that the
6861 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
6862 encoding parameters and hence was not vulnerable.
6865 *) BN_sqr() bug fix.
6866 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
6868 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
6869 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
6870 followed by modular reduction.
6871 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
6873 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
6874 equivalent based on BN_pseudo_rand() instead of BN_rand().
6877 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
6878 This function was broken, as the check for a new client hello message
6879 to handle SGC did not allow these large messages.
6880 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
6883 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
6886 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
6887 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
6890 *) Rework the configuration and shared library support for Tru64 Unix.
6891 The configuration part makes use of modern compiler features and
6892 still retains old compiler behavior for those that run older versions
6893 of the OS. The shared library support part includes a variant that
6894 uses the RPATH feature, and is available through the special
6895 configuration target "alpha-cc-rpath", which will never be selected
6897 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
6899 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
6900 with the same message size as in ssl3_get_certificate_request().
6901 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
6902 messages might inadvertently be reject as too long.
6903 [Petr Lampa <lampa@fee.vutbr.cz>]
6905 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
6908 *) Modified SSL library such that the verify_callback that has been set
6909 specificly for an SSL object with SSL_set_verify() is actually being
6910 used. Before the change, a verify_callback set with this function was
6911 ignored and the verify_callback() set in the SSL_CTX at the time of
6912 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
6913 to allow the necessary settings.
6916 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
6917 explicitly to NULL, as at least on Solaris 8 this seems not always to be
6918 done automatically (in contradiction to the requirements of the C
6919 standard). This made problems when used from OpenSSH.
6922 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
6923 dh->length and always used
6925 BN_rand_range(priv_key, dh->p).
6927 BN_rand_range() is not necessary for Diffie-Hellman, and this
6928 specific range makes Diffie-Hellman unnecessarily inefficient if
6929 dh->length (recommended exponent length) is much smaller than the
6930 length of dh->p. We could use BN_rand_range() if the order of
6931 the subgroup was stored in the DH structure, but we only have
6936 BN_rand(priv_key, l, ...)
6938 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
6944 RSA_eay_public_encrypt
6945 RSA_eay_private_decrypt
6946 RSA_eay_private_encrypt (signing)
6947 RSA_eay_public_decrypt (signature verification)
6949 (default implementations for RSA_public_encrypt,
6950 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
6951 always reject numbers >= n.
6954 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
6955 to synchronize access to 'locking_thread'. This is necessary on
6956 systems where access to 'locking_thread' (an 'unsigned long'
6957 variable) is not atomic.
6960 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
6961 *before* setting the 'crypto_lock_rand' flag. The previous code had
6962 a race condition if 0 is a valid thread ID.
6963 [Travis Vitek <vitek@roguewave.com>]
6965 *) Add support for shared libraries under Irix.
6966 [Albert Chin-A-Young <china@thewrittenword.com>]
6968 *) Add configuration option to build on Linux on both big-endian and
6970 [Ralf Baechle <ralf@uni-koblenz.de>]
6972 *) Add the possibility to create shared libraries on HP-UX.
6975 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
6977 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
6978 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
6979 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
6980 PRNG state recovery was possible based on the output of
6981 one PRNG request appropriately sized to gain knowledge on
6982 'md' followed by enough consecutive 1-byte PRNG requests
6983 to traverse all of 'state'.
6985 1. When updating 'md_local' (the current thread's copy of 'md')
6986 during PRNG output generation, hash all of the previous
6987 'md_local' value, not just the half used for PRNG output.
6989 2. Make the number of bytes from 'state' included into the hash
6990 independent from the number of PRNG bytes requested.
6992 The first measure alone would be sufficient to avoid
6993 Markku-Juhani's attack. (Actually it had never occurred
6994 to me that the half of 'md_local' used for chaining was the
6995 half from which PRNG output bytes were taken -- I had always
6996 assumed that the secret half would be used.) The second
6997 measure makes sure that additional data from 'state' is never
6998 mixed into 'md_local' in small portions; this heuristically
6999 further strengthens the PRNG.
7002 *) Fix crypto/bn/asm/mips3.s.
7005 *) When only the key is given to "enc", the IV is undefined. Print out
7006 an error message in this case.
7009 *) Handle special case when X509_NAME is empty in X509 printing routines.
7012 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
7013 positive and less than q.
7016 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
7017 used: it isn't thread safe and the add_lock_callback should handle
7019 [Paul Rose <Paul.Rose@bridge.com>]
7021 *) Verify that incoming data obeys the block size in
7022 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
7026 [Ulf Möller, Bodo Möller]
7028 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
7029 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
7030 when fixing the server behaviour for backwards-compatible 'client
7031 hello' messages. (Note that the attack is impractical against
7032 SSL 3.0 and TLS 1.0 anyway because length and version checking
7033 means that the probability of guessing a valid ciphertext is
7034 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
7037 Before 0.9.5, the countermeasure (hide the error by generating a
7038 random 'decryption result') did not work properly because
7039 ERR_clear_error() was missing, meaning that SSL_get_error() would
7040 detect the supposedly ignored error.
7042 Both problems are now fixed.
7045 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
7046 (previously it was 1024).
7049 *) Fix for compatibility mode trust settings: ignore trust settings
7050 unless some valid trust or reject settings are present.
7053 *) Fix for blowfish EVP: its a variable length cipher.
7056 *) Fix various bugs related to DSA S/MIME verification. Handle missing
7057 parameters in DSA public key structures and return an error in the
7058 DSA routines if parameters are absent.
7061 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
7062 in the current directory if neither $RANDFILE nor $HOME was set.
7063 RAND_file_name() in 0.9.6a returned NULL in this case. This has
7064 caused some confusion to Windows users who haven't defined $HOME.
7065 Thus RAND_file_name() is changed again: e_os.h can define a
7066 DEFAULT_HOME, which will be used if $HOME is not set.
7067 For Windows, we use "C:"; on other platforms, we still require
7068 environment variables.
7070 *) Move 'if (!initialized) RAND_poll()' into regions protected by
7071 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
7072 having multiple threads call RAND_poll() concurrently.
7075 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
7076 combination of a flag and a thread ID variable.
7077 Otherwise while one thread is in ssleay_rand_bytes (which sets the
7078 flag), *other* threads can enter ssleay_add_bytes without obeying
7079 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
7080 that they do not hold after the first thread unsets add_do_not_lock).
7083 *) Change bctest again: '-x' expressions are not available in all
7087 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
7089 *) Fix a couple of memory leaks in PKCS7_dataDecode()
7090 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
7092 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
7093 the default extension for executables, if any. Also, make the perl
7094 scripts that use symlink() to test if it really exists and use "cp"
7095 if it doesn't. All this made OpenSSL compilable and installable in
7099 *) Fix for asn1_GetSequence() for indefinite length constructed data.
7100 If SEQUENCE is length is indefinite just set c->slen to the total
7101 amount of data available.
7102 [Steve Henson, reported by shige@FreeBSD.org]
7103 [This change does not apply to 0.9.7.]
7105 *) Change bctest to avoid here-documents inside command substitution
7106 (workaround for FreeBSD /bin/sh bug).
7107 For compatibility with Ultrix, avoid shell functions (introduced
7108 in the bctest version that searches along $PATH).
7111 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
7112 with des_encrypt() defined on some operating systems, like Solaris
7116 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
7117 On the Importance of Eliminating Errors in Cryptographic
7118 Computations, J. Cryptology 14 (2001) 2, 101-119,
7119 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
7122 *) MIPS assembler BIGNUM division bug fix.
7125 *) Disabled incorrect Alpha assembler code.
7128 *) Fix PKCS#7 decode routines so they correctly update the length
7129 after reading an EOC for the EXPLICIT tag.
7131 [This change does not apply to 0.9.7.]
7133 *) Fix bug in PKCS#12 key generation routines. This was triggered
7134 if a 3DES key was generated with a 0 initial byte. Include
7135 PKCS12_BROKEN_KEYGEN compilation option to retain the old
7136 (but broken) behaviour.
7139 *) Enhance bctest to search for a working bc along $PATH and print
7141 [Tim Rice <tim@multitalents.net> via Richard Levitte]
7143 *) Fix memory leaks in err.c: free err_data string if necessary;
7144 don't write to the wrong index in ERR_set_error_data.
7147 *) Implement ssl23_peek (analogous to ssl23_read), which previously
7151 *) Replace rdtsc with _emit statements for VC++ version 5.
7152 [Jeremy Cooper <jeremy@baymoo.org>]
7154 *) Make it possible to reuse SSLv2 sessions.
7157 *) In copy_email() check for >= 0 as a return value for
7158 X509_NAME_get_index_by_NID() since 0 is a valid index.
7159 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
7161 *) Avoid coredump with unsupported or invalid public keys by checking if
7162 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
7163 PKCS7_verify() fails with non detached data.
7166 *) Don't use getenv in library functions when run as setuid/setgid.
7167 New function OPENSSL_issetugid().
7170 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
7171 due to incorrect handling of multi-threading:
7173 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
7175 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
7177 3. Count how many times MemCheck_off() has been called so that
7178 nested use can be treated correctly. This also avoids
7179 inband-signalling in the previous code (which relied on the
7180 assumption that thread ID 0 is impossible).
7183 *) Add "-rand" option also to s_client and s_server.
7186 *) Fix CPU detection on Irix 6.x.
7187 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
7188 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7190 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
7193 [This change does not apply to 0.9.7.]
7195 *) Use the cached encoding of an X509_NAME structure rather than
7196 copying it. This is apparently the reason for the libsafe "errors"
7197 but the code is actually correct.
7200 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
7201 Bleichenbacher's DSA attack.
7202 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
7203 to be set and top=0 forces the highest bit to be set; top=-1 is new
7204 and leaves the highest bit random.
7205 [Ulf Moeller, Bodo Moeller]
7207 *) In the NCONF_...-based implementations for CONF_... queries
7208 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
7209 a temporary CONF structure with the data component set to NULL
7210 (which gives segmentation faults in lh_retrieve).
7211 Instead, use NULL for the CONF pointer in CONF_get_string and
7212 CONF_get_number (which may use environment variables) and directly
7213 return NULL from CONF_get_section.
7216 *) Fix potential buffer overrun for EBCDIC.
7219 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
7220 keyUsage if basicConstraints absent for a CA.
7223 *) Make SMIME_write_PKCS7() write mail header values with a format that
7224 is more generally accepted (no spaces before the semicolon), since
7225 some programs can't parse those values properly otherwise. Also make
7226 sure BIO's that break lines after each write do not create invalid
7230 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
7231 macros previously used would not encode an empty SEQUENCE OF
7232 and break the signature.
7234 [This change does not apply to 0.9.7.]
7236 *) Zero the premaster secret after deriving the master secret in
7240 *) Add some EVP_add_digest_alias registrations (as found in
7241 OpenSSL_add_all_digests()) to SSL_library_init()
7242 aka OpenSSL_add_ssl_algorithms(). This provides improved
7243 compatibility with peers using X.509 certificates
7244 with unconventional AlgorithmIdentifier OIDs.
7247 *) Fix for Irix with NO_ASM.
7248 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7250 *) ./config script fixes.
7251 [Ulf Moeller, Richard Levitte]
7253 *) Fix 'openssl passwd -1'.
7256 *) Change PKCS12_key_gen_asc() so it can cope with non null
7257 terminated strings whose length is passed in the passlen
7258 parameter, for example from PEM callbacks. This was done
7259 by adding an extra length parameter to asc2uni().
7260 [Steve Henson, reported by <oddissey@samsung.co.kr>]
7262 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
7263 call failed, free the DSA structure.
7266 *) Fix to uni2asc() to cope with zero length Unicode strings.
7267 These are present in some PKCS#12 files.
7270 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
7271 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
7272 when writing a 32767 byte record.
7273 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
7275 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
7276 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
7278 (RSA objects have a reference count access to which is protected
7279 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
7280 so they are meant to be shared between threads.)
7281 [Bodo Moeller, Geoff Thorpe; original patch submitted by
7282 "Reddie, Steven" <Steven.Reddie@ca.com>]
7284 *) Fix a deadlock in CRYPTO_mem_leaks().
7287 *) Use better test patterns in bntest.
7290 *) rand_win.c fix for Borland C.
7293 *) BN_rshift bugfix for n == 0.
7296 *) Add a 'bctest' script that checks for some known 'bc' bugs
7297 so that 'make test' does not abort just because 'bc' is broken.
7300 *) Store verify_result within SSL_SESSION also for client side to
7301 avoid potential security hole. (Re-used sessions on the client side
7302 always resulted in verify_result==X509_V_OK, not using the original
7303 result of the server certificate verification.)
7306 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
7307 SSL3_RT_APPLICATION_DATA, return 0.
7308 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
7312 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
7313 releases, have been re-implemented by renaming the previous
7314 implementations of ssl2_read and ssl3_read to ssl2_read_internal
7315 and ssl3_read_internal, respectively, and adding 'peek' parameters
7316 to them. The new ssl[23]_{read,peek} functions are calls to
7317 ssl[23]_read_internal with the 'peek' flag set appropriately.
7318 A 'peek' parameter has also been added to ssl3_read_bytes, which
7319 does the actual work for ssl3_read_internal.
7322 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
7323 the method-specific "init()" handler. Also clean up ex_data after
7324 calling the method-specific "finish()" handler. Previously, this was
7325 happening the other way round.
7328 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
7329 The previous value, 12, was not always sufficient for BN_mod_exp().
7332 *) Make sure that shared libraries get the internal name engine with
7333 the full version number and not just 0. This should mark the
7334 shared libraries as not backward compatible. Of course, this should
7335 be changed again when we can guarantee backward binary compatibility.
7338 *) Fix typo in get_cert_by_subject() in by_dir.c
7339 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
7341 *) Rework the system to generate shared libraries:
7343 - Make note of the expected extension for the shared libraries and
7344 if there is a need for symbolic links from for example libcrypto.so.0
7345 to libcrypto.so.0.9.7. There is extended info in Configure for
7348 - Make as few rebuilds of the shared libraries as possible.
7350 - Still avoid linking the OpenSSL programs with the shared libraries.
7352 - When installing, install the shared libraries separately from the
7356 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
7358 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
7359 and not in SSL_clear because the latter is also used by the
7360 accept/connect functions; previously, the settings made by
7361 SSL_set_read_ahead would be lost during the handshake.
7362 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
7364 *) Correct util/mkdef.pl to be selective about disabled algorithms.
7365 Previously, it would create entries for disableed algorithms no
7369 *) Added several new manual pages for SSL_* function.
7372 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
7374 *) In ssl23_get_client_hello, generate an error message when faced
7375 with an initial SSL 3.0/TLS record that is too small to contain the
7376 first two bytes of the ClientHello message, i.e. client_version.
7377 (Note that this is a pathologic case that probably has never happened
7378 in real life.) The previous approach was to use the version number
7379 from the record header as a substitute; but our protocol choice
7380 should not depend on that one because it is not authenticated
7381 by the Finished messages.
7384 *) More robust randomness gathering functions for Windows.
7385 [Jeffrey Altman <jaltman@columbia.edu>]
7387 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
7388 not set then we don't setup the error code for issuer check errors
7389 to avoid possibly overwriting other errors which the callback does
7390 handle. If an application does set the flag then we assume it knows
7391 what it is doing and can handle the new informational codes
7395 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
7396 a general "ANY" type, as such it should be able to decode anything
7397 including tagged types. However it didn't check the class so it would
7398 wrongly interpret tagged types in the same way as their universal
7399 counterpart and unknown types were just rejected. Changed so that the
7400 tagged and unknown types are handled in the same way as a SEQUENCE:
7401 that is the encoding is stored intact. There is also a new type
7402 "V_ASN1_OTHER" which is used when the class is not universal, in this
7403 case we have no idea what the actual type is so we just lump them all
7407 *) On VMS, stdout may very well lead to a file that is written to
7408 in a record-oriented fashion. That means that every write() will
7409 write a separate record, which will be read separately by the
7410 programs trying to read from it. This can be very confusing.
7412 The solution is to put a BIO filter in the way that will buffer
7413 text until a linefeed is reached, and then write everything a
7414 line at a time, so every record written will be an actual line,
7415 not chunks of lines and not (usually doesn't happen, but I've
7416 seen it once) several lines in one record. BIO_f_linebuffer() is
7419 Currently, it's a VMS-only method, because that's where it has
7420 been tested well enough.
7423 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
7424 it can return incorrect results.
7425 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
7426 but it was in 0.9.6-beta[12].)
7429 *) Disable the check for content being present when verifying detached
7430 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
7431 include zero length content when signing messages.
7434 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
7435 BIO_ctrl (for BIO pairs).
7438 *) Add DSO method for VMS.
7441 *) Bug fix: Montgomery multiplication could produce results with the
7445 *) Add RPM specification openssl.spec and modify it to build three
7446 packages. The default package contains applications, application
7447 documentation and run-time libraries. The devel package contains
7448 include files, static libraries and function documentation. The
7449 doc package contains the contents of the doc directory. The original
7450 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
7453 *) Add a large number of documentation files for many SSL routines.
7454 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7456 *) Add a configuration entry for Sony News 4.
7457 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
7459 *) Don't set the two most significant bits to one when generating a
7460 random number < q in the DSA library.
7463 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
7464 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
7465 the underlying transport is blocking) if a handshake took place.
7466 (The default behaviour is needed by applications such as s_client
7467 and s_server that use select() to determine when to use SSL_read;
7468 but for applications that know in advance when to expect data, it
7469 just makes things more complicated.)
7472 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
7476 *) Add a few more EBCDIC conditionals that make `req' and `x509'
7477 work better on such systems.
7478 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7480 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
7481 Update PKCS12_parse() so it copies the friendlyName and the
7482 keyid to the certificates aux info.
7485 *) Fix bug in PKCS7_verify() which caused an infinite loop
7486 if there was more than one signature.
7487 [Sven Uszpelkat <su@celocom.de>]
7489 *) Major change in util/mkdef.pl to include extra information
7490 about each symbol, as well as presenting variables as well
7491 as functions. This change means that there's n more need
7492 to rebuild the .num files when some algorithms are excluded.
7495 *) Allow the verify time to be set by an application,
7496 rather than always using the current time.
7499 *) Phase 2 verify code reorganisation. The certificate
7500 verify code now looks up an issuer certificate by a
7501 number of criteria: subject name, authority key id
7502 and key usage. It also verifies self signed certificates
7503 by the same criteria. The main comparison function is
7504 X509_check_issued() which performs these checks.
7506 Lot of changes were necessary in order to support this
7507 without completely rewriting the lookup code.
7509 Authority and subject key identifier are now cached.
7511 The LHASH 'certs' is X509_STORE has now been replaced
7512 by a STACK_OF(X509_OBJECT). This is mainly because an
7513 LHASH can't store or retrieve multiple objects with
7514 the same hash value.
7516 As a result various functions (which were all internal
7517 use only) have changed to handle the new X509_STORE
7518 structure. This will break anything that messed round
7519 with X509_STORE internally.
7521 The functions X509_STORE_add_cert() now checks for an
7522 exact match, rather than just subject name.
7524 The X509_STORE API doesn't directly support the retrieval
7525 of multiple certificates matching a given criteria, however
7526 this can be worked round by performing a lookup first
7527 (which will fill the cache with candidate certificates)
7528 and then examining the cache for matches. This is probably
7529 the best we can do without throwing out X509_LOOKUP
7530 entirely (maybe later...).
7532 The X509_VERIFY_CTX structure has been enhanced considerably.
7534 All certificate lookup operations now go via a get_issuer()
7535 callback. Although this currently uses an X509_STORE it
7536 can be replaced by custom lookups. This is a simple way
7537 to bypass the X509_STORE hackery necessary to make this
7538 work and makes it possible to use more efficient techniques
7539 in future. A very simple version which uses a simple
7540 STACK for its trusted certificate store is also provided
7541 using X509_STORE_CTX_trusted_stack().
7543 The verify_cb() and verify() callbacks now have equivalents
7544 in the X509_STORE_CTX structure.
7546 X509_STORE_CTX also has a 'flags' field which can be used
7547 to customise the verify behaviour.
7550 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
7551 excludes S/MIME capabilities.
7554 *) When a certificate request is read in keep a copy of the
7555 original encoding of the signed data and use it when outputing
7556 again. Signatures then use the original encoding rather than
7557 a decoded, encoded version which may cause problems if the
7558 request is improperly encoded.
7561 *) For consistency with other BIO_puts implementations, call
7562 buffer_write(b, ...) directly in buffer_puts instead of calling
7565 In BIO_puts, increment b->num_write as in BIO_write.
7566 [Peter.Sylvester@EdelWeb.fr]
7568 *) Fix BN_mul_word for the case where the word is 0. (We have to use
7569 BN_zero, we may not return a BIGNUM with an array consisting of
7573 *) Avoid calling abort() from within the library when problems are
7574 detected, except if preprocessor symbols have been defined
7575 (such as REF_CHECK, BN_DEBUG etc.).
7578 *) New openssl application 'rsautl'. This utility can be
7579 used for low level RSA operations. DER public key
7580 BIO/fp routines also added.
7583 *) New Configure entry and patches for compiling on QNX 4.
7584 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
7586 *) A demo state-machine implementation was sponsored by
7587 Nuron (http://www.nuron.com/) and is now available in
7588 demos/state_machine.
7591 *) New options added to the 'dgst' utility for signature
7592 generation and verification.
7595 *) Unrecognized PKCS#7 content types are now handled via a
7596 catch all ASN1_TYPE structure. This allows unsupported
7597 types to be stored as a "blob" and an application can
7598 encode and decode it manually.
7601 *) Fix various signed/unsigned issues to make a_strex.c
7603 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
7605 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
7606 length if passed a buffer. ASN1_INTEGER_to_BN failed
7607 if passed a NULL BN and its argument was negative.
7608 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
7610 *) Modification to PKCS#7 encoding routines to output definite
7611 length encoding. Since currently the whole structures are in
7612 memory there's not real point in using indefinite length
7613 constructed encoding. However if OpenSSL is compiled with
7614 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
7617 *) Added BIO_vprintf() and BIO_vsnprintf().
7620 *) Added more prefixes to parse for in the the strings written
7621 through a logging bio, to cover all the levels that are available
7622 through syslog. The prefixes are now:
7624 PANIC, EMERG, EMR => LOG_EMERG
7625 ALERT, ALR => LOG_ALERT
7626 CRIT, CRI => LOG_CRIT
7627 ERROR, ERR => LOG_ERR
7628 WARNING, WARN, WAR => LOG_WARNING
7629 NOTICE, NOTE, NOT => LOG_NOTICE
7630 INFO, INF => LOG_INFO
7631 DEBUG, DBG => LOG_DEBUG
7633 and as before, if none of those prefixes are present at the
7634 beginning of the string, LOG_ERR is chosen.
7636 On Win32, the LOG_* levels are mapped according to this:
7638 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
7639 LOG_WARNING => EVENTLOG_WARNING_TYPE
7640 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
7644 *) Made it possible to reconfigure with just the configuration
7645 argument "reconf" or "reconfigure". The command line arguments
7646 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
7647 and are retrieved from there when reconfiguring.
7651 [Assar Westerlund <assar@sics.se>, Richard Levitte]
7653 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
7656 *) The obj_dat.pl script was messing up the sorting of object
7657 names. The reason was that it compared the quoted version
7658 of strings as a result "OCSP" > "OCSP Signing" because
7659 " > SPACE. Changed script to store unquoted versions of
7660 names and add quotes on output. It was also omitting some
7661 names from the lookup table if they were given a default
7662 value (that is if SN is missing it is given the same
7663 value as LN and vice versa), these are now added on the
7664 grounds that if an object has a name we should be able to
7665 look it up. Finally added warning output when duplicate
7666 short or long names are found.
7669 *) Changes needed for Tandem NSK.
7670 [Scott Uroff <scott@xypro.com>]
7672 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
7673 RSA_padding_check_SSLv23(), special padding was never detected
7674 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
7675 version rollback attacks was not effective.
7677 In s23_clnt.c, don't use special rollback-attack detection padding
7678 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
7679 client; similarly, in s23_srvr.c, don't do the rollback check if
7680 SSL 2.0 is the only protocol enabled in the server.
7683 *) Make it possible to get hexdumps of unprintable data with 'openssl
7684 asn1parse'. By implication, the functions ASN1_parse_dump() and
7685 BIO_dump_indent() are added.
7688 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
7689 these print out strings and name structures based on various
7690 flags including RFC2253 support and proper handling of
7691 multibyte characters. Added options to the 'x509' utility
7692 to allow the various flags to be set.
7695 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
7696 Also change the functions X509_cmp_current_time() and
7697 X509_gmtime_adj() work with an ASN1_TIME structure,
7698 this will enable certificates using GeneralizedTime in validity
7699 dates to be checked.
7702 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
7703 negative public key encodings) on by default,
7704 NO_NEG_PUBKEY_BUG can be set to disable it.
7707 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
7708 content octets. An i2c_ASN1_OBJECT is unnecessary because
7709 the encoding can be trivially obtained from the structure.
7712 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
7713 not read locks (CRYPTO_r_[un]lock).
7716 *) A first attempt at creating official support for shared
7717 libraries through configuration. I've kept it so the
7718 default is static libraries only, and the OpenSSL programs
7719 are always statically linked for now, but there are
7720 preparations for dynamic linking in place.
7721 This has been tested on Linux and Tru64.
7724 *) Randomness polling function for Win9x, as described in:
7725 Peter Gutmann, Software Generation of Practically Strong
7729 *) Fix so PRNG is seeded in req if using an already existing
7733 *) New options to smime application. -inform and -outform
7734 allow alternative formats for the S/MIME message including
7735 PEM and DER. The -content option allows the content to be
7736 specified separately. This should allow things like Netscape
7737 form signing output easier to verify.
7740 *) Fix the ASN1 encoding of tags using the 'long form'.
7743 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
7744 STRING types. These convert content octets to and from the
7745 underlying type. The actual tag and length octets are
7746 already assumed to have been read in and checked. These
7747 are needed because all other string types have virtually
7748 identical handling apart from the tag. By having versions
7749 of the ASN1 functions that just operate on content octets
7750 IMPLICIT tagging can be handled properly. It also allows
7751 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
7752 and ASN1_INTEGER are identical apart from the tag.
7755 *) Change the handling of OID objects as follows:
7757 - New object identifiers are inserted in objects.txt, following
7758 the syntax given in objects.README.
7759 - objects.pl is used to process obj_mac.num and create a new
7761 - obj_dat.pl is used to create a new obj_dat.h, using the data in
7764 This is currently kind of a hack, and the perl code in objects.pl
7765 isn't very elegant, but it works as I intended. The simplest way
7766 to check that it worked correctly is to look in obj_dat.h and
7767 check the array nid_objs and make sure the objects haven't moved
7768 around (this is important!). Additions are OK, as well as
7769 consistent name changes.
7772 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
7775 *) Addition of the command line parameter '-rand file' to 'openssl req'.
7776 The given file adds to whatever has already been seeded into the
7777 random pool through the RANDFILE configuration file option or
7778 environment variable, or the default random state file.
7781 *) mkstack.pl now sorts each macro group into lexical order.
7782 Previously the output order depended on the order the files
7783 appeared in the directory, resulting in needless rewriting
7787 *) Patches to make OpenSSL compile under Win32 again. Mostly
7788 work arounds for the VC++ problem that it treats func() as
7789 func(void). Also stripped out the parts of mkdef.pl that
7790 added extra typesafe functions: these no longer exist.
7793 *) Reorganisation of the stack code. The macros are now all
7794 collected in safestack.h . Each macro is defined in terms of
7795 a "stack macro" of the form SKM_<name>(type, a, b). The
7796 DEBUG_SAFESTACK is now handled in terms of function casts,
7797 this has the advantage of retaining type safety without the
7798 use of additional functions. If DEBUG_SAFESTACK is not defined
7799 then the non typesafe macros are used instead. Also modified the
7800 mkstack.pl script to handle the new form. Needs testing to see
7801 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
7802 the default if no major problems. Similar behaviour for ASN1_SET_OF
7803 and PKCS12_STACK_OF.
7806 *) When some versions of IIS use the 'NET' form of private key the
7807 key derivation algorithm is different. Normally MD5(password) is
7808 used as a 128 bit RC4 key. In the modified case
7809 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
7810 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
7811 as the old Netscape_RSA functions except they have an additional
7812 'sgckey' parameter which uses the modified algorithm. Also added
7813 an -sgckey command line option to the rsa utility. Thanks to
7814 Adrian Peck <bertie@ncipher.com> for posting details of the modified
7815 algorithm to openssl-dev.
7818 *) The evp_local.h macros were using 'c.##kname' which resulted in
7819 invalid expansion on some systems (SCO 5.0.5 for example).
7820 Corrected to 'c.kname'.
7821 [Phillip Porch <root@theporch.com>]
7823 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
7824 a STACK of email addresses from a certificate or request, these look
7825 in the subject name and the subject alternative name extensions and
7826 omit any duplicate addresses.
7829 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
7830 This makes DSA verification about 2 % faster.
7833 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
7834 (meaning that now 2^5 values will be precomputed, which is only 4 KB
7835 plus overhead for 1024 bit moduli).
7836 This makes exponentiations about 0.5 % faster for 1024 bit
7837 exponents (as measured by "openssl speed rsa2048").
7840 *) Rename memory handling macros to avoid conflicts with other
7842 Malloc => OPENSSL_malloc
7843 Malloc_locked => OPENSSL_malloc_locked
7844 Realloc => OPENSSL_realloc
7845 Free => OPENSSL_free
7848 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
7849 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
7852 *) CygWin32 support.
7853 [John Jarvie <jjarvie@newsguy.com>]
7855 *) The type-safe stack code has been rejigged. It is now only compiled
7856 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
7857 by default all type-specific stack functions are "#define"d back to
7858 standard stack functions. This results in more streamlined output
7859 but retains the type-safety checking possibilities of the original
7863 *) The STACK code has been cleaned up, and certain type declarations
7864 that didn't make a lot of sense have been brought in line. This has
7865 also involved a cleanup of sorts in safestack.h to more correctly
7866 map type-safe stack functions onto their plain stack counterparts.
7867 This work has also resulted in a variety of "const"ifications of
7868 lots of the code, especially "_cmp" operations which should normally
7869 be prototyped with "const" parameters anyway.
7872 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
7873 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
7874 (The PRNG state consists of two parts, the large pool 'state' and 'md',
7875 where all of 'md' is used each time the PRNG is used, but 'state'
7876 is used only indexed by a cyclic counter. As entropy may not be
7877 well distributed from the beginning, 'md' is important as a
7878 chaining variable. However, the output function chains only half
7879 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
7880 all of 'md', and seeding with STATE_SIZE dummy bytes will result
7881 in all of 'state' being rewritten, with the new values depending
7882 on virtually all of 'md'. This overcomes the 80 bit limitation.)
7885 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
7886 the handshake is continued after ssl_verify_cert_chain();
7887 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
7888 can lead to 'unexplainable' connection aborts later.
7889 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
7891 *) Major EVP API cipher revision.
7892 Add hooks for extra EVP features. This allows various cipher
7893 parameters to be set in the EVP interface. Support added for variable
7894 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
7895 setting of RC2 and RC5 parameters.
7897 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
7900 Remove lots of duplicated code from the EVP library. For example *every*
7901 cipher init() function handles the 'iv' in the same way according to the
7902 cipher mode. They also all do nothing if the 'key' parameter is NULL and
7903 for CFB and OFB modes they zero ctx->num.
7905 New functionality allows removal of S/MIME code RC2 hack.
7907 Most of the routines have the same form and so can be declared in terms
7910 By shifting this to the top level EVP_CipherInit() it can be removed from
7911 all individual ciphers. If the cipher wants to handle IVs or keys
7912 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
7915 Change lots of functions like EVP_EncryptUpdate() to now return a
7916 value: although software versions of the algorithms cannot fail
7917 any installed hardware versions can.
7920 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
7921 this option is set, tolerate broken clients that send the negotiated
7922 protocol version number instead of the requested protocol version
7926 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
7927 i.e. non-zero for export ciphersuites, zero otherwise.
7928 Previous versions had this flag inverted, inconsistent with
7929 rsa_tmp_cb (..._TMP_RSA_CB).
7930 [Bodo Moeller; problem reported by Amit Chopra]
7932 *) Add missing DSA library text string. Work around for some IIS
7933 key files with invalid SEQUENCE encoding.
7936 *) Add a document (doc/standards.txt) that list all kinds of standards
7937 and so on that are implemented in OpenSSL.
7940 *) Enhance c_rehash script. Old version would mishandle certificates
7941 with the same subject name hash and wouldn't handle CRLs at all.
7942 Added -fingerprint option to crl utility, to support new c_rehash
7946 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
7949 *) Fix for SSL server purpose checking. Server checking was
7950 rejecting certificates which had extended key usage present
7951 but no ssl client purpose.
7952 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
7954 *) Make PKCS#12 code work with no password. The PKCS#12 spec
7955 is a little unclear about how a blank password is handled.
7956 Since the password in encoded as a BMPString with terminating
7957 double NULL a zero length password would end up as just the
7958 double NULL. However no password at all is different and is
7959 handled differently in the PKCS#12 key generation code. NS
7960 treats a blank password as zero length. MSIE treats it as no
7961 password on export: but it will try both on import. We now do
7962 the same: PKCS12_parse() tries zero length and no password if
7963 the password is set to "" or NULL (NULL is now a valid password:
7964 it wasn't before) as does the pkcs12 application.
7967 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
7968 perror when PEM_read_bio_X509_REQ fails, the error message must
7969 be obtained from the error queue.
7972 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
7973 it in ERR_remove_state if appropriate, and change ERR_get_state
7974 accordingly to avoid race conditions (this is necessary because
7975 thread_hash is no longer constant once set).
7978 *) Bugfix for linux-elf makefile.one.
7981 *) RSA_get_default_method() will now cause a default
7982 RSA_METHOD to be chosen if one doesn't exist already.
7983 Previously this was only set during a call to RSA_new()
7984 or RSA_new_method(NULL) meaning it was possible for
7985 RSA_get_default_method() to return NULL.
7988 *) Added native name translation to the existing DSO code
7989 that will convert (if the flag to do so is set) filenames
7990 that are sufficiently small and have no path information
7991 into a canonical native form. Eg. "blah" converted to
7992 "libblah.so" or "blah.dll" etc.
7995 *) New function ERR_error_string_n(e, buf, len) which is like
7996 ERR_error_string(e, buf), but writes at most 'len' bytes
7997 including the 0 terminator. For ERR_error_string_n, 'buf'
7999 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
8001 *) CONF library reworked to become more general. A new CONF
8002 configuration file reader "class" is implemented as well as a
8003 new functions (NCONF_*, for "New CONF") to handle it. The now
8004 old CONF_* functions are still there, but are reimplemented to
8005 work in terms of the new functions. Also, a set of functions
8006 to handle the internal storage of the configuration data is
8007 provided to make it easier to write new configuration file
8008 reader "classes" (I can definitely see something reading a
8009 configuration file in XML format, for example), called _CONF_*,
8010 or "the configuration storage API"...
8012 The new configuration file reading functions are:
8014 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
8015 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
8017 NCONF_default, NCONF_WIN32
8019 NCONF_dump_fp, NCONF_dump_bio
8021 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
8022 NCONF_new creates a new CONF object. This works in the same way
8023 as other interfaces in OpenSSL, like the BIO interface.
8024 NCONF_dump_* dump the internal storage of the configuration file,
8025 which is useful for debugging. All other functions take the same
8026 arguments as the old CONF_* functions wth the exception of the
8027 first that must be a `CONF *' instead of a `LHASH *'.
8029 To make it easer to use the new classes with the old CONF_* functions,
8030 the function CONF_set_default_method is provided.
8033 *) Add '-tls1' option to 'openssl ciphers', which was already
8034 mentioned in the documentation but had not been implemented.
8035 (This option is not yet really useful because even the additional
8036 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
8039 *) Initial DSO code added into libcrypto for letting OpenSSL (and
8040 OpenSSL-based applications) load shared libraries and bind to
8041 them in a portable way.
8042 [Geoff Thorpe, with contributions from Richard Levitte]
8044 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
8046 *) Make sure _lrotl and _lrotr are only used with MSVC.
8048 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
8049 (the default implementation of RAND_status).
8051 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
8052 to '-clrext' (= clear extensions), as intended and documented.
8053 [Bodo Moeller; inconsistency pointed out by Michael Attili
8056 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
8057 was larger than the MD block size.
8058 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
8060 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
8061 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
8062 using the passed key: if the passed key was a private key the result
8063 of X509_print(), for example, would be to print out all the private key
8067 *) des_quad_cksum() byte order bug fix.
8068 [Ulf Möller, using the problem description in krb4-0.9.7, where
8069 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
8071 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
8073 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
8075 *) For easily testing in shell scripts whether some command
8076 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
8077 returns with exit code 0 iff no command of the given name is available.
8078 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
8079 the output goes to stdout and nothing is printed to stderr.
8080 Additional arguments are always ignored.
8082 Since for each cipher there is a command of the same name,
8083 the 'no-cipher' compilation switches can be tested this way.
8085 ('openssl no-XXX' is not able to detect pseudo-commands such
8086 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
8089 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
8092 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
8093 is set; it will be thrown away anyway because each handshake creates
8095 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
8096 to parameters -- in previous versions (since OpenSSL 0.9.3) the
8097 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
8098 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
8101 *) New s_client option -ign_eof: EOF at stdin is ignored, and
8102 'Q' and 'R' lose their special meanings (quit/renegotiate).
8103 This is part of what -quiet does; unlike -quiet, -ign_eof
8104 does not suppress any output.
8107 *) Add compatibility options to the purpose and trust code. The
8108 purpose X509_PURPOSE_ANY is "any purpose" which automatically
8109 accepts a certificate or CA, this was the previous behaviour,
8110 with all the associated security issues.
8112 X509_TRUST_COMPAT is the old trust behaviour: only and
8113 automatically trust self signed roots in certificate store. A
8114 new trust setting X509_TRUST_DEFAULT is used to specify that
8115 a purpose has no associated trust setting and it should instead
8116 use the value in the default purpose.
8119 *) Fix the PKCS#8 DSA private key code so it decodes keys again
8120 and fix a memory leak.
8123 *) In util/mkerr.pl (which implements 'make errors'), preserve
8124 reason strings from the previous version of the .c file, as
8125 the default to have only downcase letters (and digits) in
8126 automatically generated reasons codes is not always appropriate.
8129 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
8130 using strerror. Previously, ERR_reason_error_string() returned
8131 library names as reason strings for SYSerr; but SYSerr is a special
8132 case where small numbers are errno values, not library numbers.
8135 *) Add '-dsaparam' option to 'openssl dhparam' application. This
8136 converts DSA parameters into DH parameters. (When creating parameters,
8137 DSA_generate_parameters is used.)
8140 *) Include 'length' (recommended exponent length) in C code generated
8141 by 'openssl dhparam -C'.
8144 *) The second argument to set_label in perlasm was already being used
8145 so couldn't be used as a "file scope" flag. Moved to third argument
8149 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
8150 instead of RAND_bytes for encryption IVs and salts.
8153 *) Include RAND_status() into RAND_METHOD instead of implementing
8154 it only for md_rand.c Otherwise replacing the PRNG by calling
8155 RAND_set_rand_method would be impossible.
8158 *) Don't let DSA_generate_key() enter an infinite loop if the random
8159 number generation fails.
8162 *) New 'rand' application for creating pseudo-random output.
8165 *) Added configuration support for Linux/IA64
8166 [Rolf Haberrecker <rolf@suse.de>]
8168 *) Assembler module support for Mingw32.
8171 *) Shared library support for HPUX (in shlib/).
8172 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
8174 *) Shared library support for Solaris gcc.
8175 [Lutz Behnke <behnke@trustcenter.de>]
8177 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
8179 *) PKCS7_encrypt() was adding text MIME headers twice because they
8180 were added manually and by SMIME_crlf_copy().
8183 *) In bntest.c don't call BN_rand with zero bits argument.
8184 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
8186 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
8187 case was implemented. This caused BN_div_recp() to fail occasionally.
8190 *) Add an optional second argument to the set_label() in the perl
8191 assembly language builder. If this argument exists and is set
8192 to 1 it signals that the assembler should use a symbol whose
8193 scope is the entire file, not just the current function. This
8194 is needed with MASM which uses the format label:: for this scope.
8195 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
8197 *) Change the ASN1 types so they are typedefs by default. Before
8198 almost all types were #define'd to ASN1_STRING which was causing
8199 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
8203 *) Change names of new functions to the new get1/get0 naming
8204 convention: After 'get1', the caller owns a reference count
8205 and has to call ..._free; 'get0' returns a pointer to some
8206 data structure without incrementing reference counters.
8207 (Some of the existing 'get' functions increment a reference
8208 counter, some don't.)
8209 Similarly, 'set1' and 'add1' functions increase reference
8210 counters or duplicate objects.
8213 *) Allow for the possibility of temp RSA key generation failure:
8214 the code used to assume it always worked and crashed on failure.
8217 *) Fix potential buffer overrun problem in BIO_printf().
8218 [Ulf Möller, using public domain code by Patrick Powell; problem
8219 pointed out by David Sacerdote <das33@cornell.edu>]
8221 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
8222 RAND_egd() and RAND_status(). In the command line application,
8223 the EGD socket can be specified like a seed file using RANDFILE
8227 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
8228 Some CAs (e.g. Verisign) distribute certificates in this form.
8231 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
8232 list to exclude them. This means that no special compilation option
8233 is needed to use anonymous DH: it just needs to be included in the
8237 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
8238 EVP_MD_type. The old functionality is available in a new macro called
8239 EVP_MD_md(). Change code that uses it and update docs.
8242 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
8243 where the 'void *' argument is replaced by a function pointer argument.
8244 Previously 'void *' was abused to point to functions, which works on
8245 many platforms, but is not correct. As these functions are usually
8246 called by macros defined in OpenSSL header files, most source code
8247 should work without changes.
8250 *) <openssl/opensslconf.h> (which is created by Configure) now contains
8251 sections with information on -D... compiler switches used for
8252 compiling the library so that applications can see them. To enable
8253 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
8254 must be defined. E.g.,
8255 #define OPENSSL_ALGORITHM_DEFINES
8256 #include <openssl/opensslconf.h>
8257 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
8258 [Richard Levitte, Ulf and Bodo Möller]
8260 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
8264 *) Change the 'other' type in certificate aux info to a STACK_OF
8265 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
8266 the required ASN1 format: arbitrary types determined by an OID.
8269 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
8270 argument to 'req'. This is not because the function is newer or
8271 better than others it just uses the work 'NEW' in the certificate
8272 request header lines. Some software needs this.
8275 *) Reorganise password command line arguments: now passwords can be
8276 obtained from various sources. Delete the PEM_cb function and make
8277 it the default behaviour: i.e. if the callback is NULL and the
8278 usrdata argument is not NULL interpret it as a null terminated pass
8279 phrase. If usrdata and the callback are NULL then the pass phrase
8280 is prompted for as usual.
8283 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
8284 the support is automatically enabled. The resulting binaries will
8285 autodetect the card and use it if present.
8286 [Ben Laurie and Compaq Inc.]
8288 *) Work around for Netscape hang bug. This sends certificate request
8289 and server done in one record. Since this is perfectly legal in the
8290 SSL/TLS protocol it isn't a "bug" option and is on by default. See
8291 the bugs/SSLv3 entry for more info.
8294 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
8297 *) Add -rand argument to smime and pkcs12 applications and read/write
8301 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
8304 *) Add command line password options to the remaining applications.
8307 *) Bug fix for BN_div_recp() for numerators with an even number of
8311 *) More tests in bntest.c, and changed test_bn output.
8314 *) ./config recognizes MacOS X now.
8317 *) Bug fix for BN_div() when the first words of num and divsor are
8318 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
8321 *) Add support for various broken PKCS#8 formats, and command line
8322 options to produce them.
8325 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
8326 get temporary BIGNUMs from a BN_CTX.
8329 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
8333 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
8334 include a #define from the old name to the new. The original intent
8335 was that statically linked binaries could for example just call
8336 SSLeay_add_all_ciphers() to just add ciphers to the table and not
8337 link with digests. This never worked because SSLeay_add_all_digests()
8338 and SSLeay_add_all_ciphers() were in the same source file so calling
8339 one would link with the other. They are now in separate source files.
8342 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
8345 *) Use a less unusual form of the Miller-Rabin primality test (it used
8346 a binary algorithm for exponentiation integrated into the Miller-Rabin
8347 loop, our standard modexp algorithms are faster).
8350 *) Support for the EBCDIC character set completed.
8351 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
8353 *) Source code cleanups: use const where appropriate, eliminate casts,
8354 use void * instead of char * in lhash.
8357 *) Bugfix: ssl3_send_server_key_exchange was not restartable
8358 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
8359 this the server could overwrite ephemeral keys that the client
8363 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
8364 using 50 iterations of the Rabin-Miller test.
8366 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
8367 iterations of the Rabin-Miller test as required by the appendix
8368 to FIPS PUB 186[-1]) instead of DSA_is_prime.
8369 As BN_is_prime_fasttest includes trial division, DSA parameter
8370 generation becomes much faster.
8372 This implies a change for the callback functions in DSA_is_prime
8373 and DSA_generate_parameters: The callback function is called once
8374 for each positive witness in the Rabin-Miller test, not just
8375 occasionally in the inner loop; and the parameters to the
8376 callback function now provide an iteration count for the outer
8377 loop rather than for the current invocation of the inner loop.
8378 DSA_generate_parameters additionally can call the callback
8379 function with an 'iteration count' of -1, meaning that a
8380 candidate has passed the trial division test (when q is generated
8381 from an application-provided seed, trial division is skipped).
8384 *) New function BN_is_prime_fasttest that optionally does trial
8385 division before starting the Rabin-Miller test and has
8386 an additional BN_CTX * argument (whereas BN_is_prime always
8387 has to allocate at least one BN_CTX).
8388 'callback(1, -1, cb_arg)' is called when a number has passed the
8389 trial division stage.
8392 *) Fix for bug in CRL encoding. The validity dates weren't being handled
8396 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
8399 *) New function BN_pseudo_rand().
8402 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
8403 bignum version of BN_from_montgomery() with the working code from
8404 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
8408 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
8409 made it impossible to use the same SSL_SESSION data structure in
8410 SSL2 clients in multiple threads.
8413 *) The return value of RAND_load_file() no longer counts bytes obtained
8414 by stat(). RAND_load_file(..., -1) is new and uses the complete file
8415 to seed the PRNG (previously an explicit byte count was required).
8416 [Ulf Möller, Bodo Möller]
8418 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
8419 used (char *) instead of (void *) and had casts all over the place.
8422 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
8425 *) Retain source code compatibility for BN_prime_checks macro:
8426 BN_is_prime(..., BN_prime_checks, ...) now uses
8427 BN_prime_checks_for_size to determine the appropriate number of
8428 Rabin-Miller iterations.
8431 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
8432 DH_CHECK_P_NOT_SAFE_PRIME.
8433 (Check if this is true? OpenPGP calls them "strong".)
8436 *) Merge the functionality of "dh" and "gendh" programs into a new program
8437 "dhparam". The old programs are retained for now but will handle DH keys
8438 (instead of parameters) in future.
8441 *) Make the ciphers, s_server and s_client programs check the return values
8442 when a new cipher list is set.
8445 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
8446 ciphers. Before when the 56bit ciphers were enabled the sorting was
8449 The syntax for the cipher sorting has been extended to support sorting by
8450 cipher-strength (using the strength_bits hard coded in the tables).
8451 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
8453 Fix a bug in the cipher-command parser: when supplying a cipher command
8454 string with an "undefined" symbol (neither command nor alphanumeric
8455 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
8456 an error is flagged.
8458 Due to the strength-sorting extension, the code of the
8459 ssl_create_cipher_list() function was completely rearranged. I hope that
8460 the readability was also increased :-)
8461 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
8463 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
8464 for the first serial number and places 2 in the serial number file. This
8465 avoids problems when the root CA is created with serial number zero and
8466 the first user certificate has the same issuer name and serial number
8470 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
8471 the new code. Add documentation for this stuff.
8474 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
8475 X509_*() to X509at_*() on the grounds that they don't handle X509
8476 structures and behave in an analogous way to the X509v3 functions:
8477 they shouldn't be called directly but wrapper functions should be used
8480 So we also now have some wrapper functions that call the X509at functions
8481 when passed certificate requests. (TO DO: similar things can be done with
8482 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
8483 things. Some of these need some d2i or i2d and print functionality
8484 because they handle more complex structures.)
8487 *) Add missing #ifndefs that caused missing symbols when building libssl
8488 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
8489 NO_RSA in ssl/s2*.c.
8490 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
8492 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
8493 has a return value which indicates the quality of the random data
8494 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
8495 error queue. New function RAND_pseudo_bytes() generates output that is
8496 guaranteed to be unique but not unpredictable. RAND_add is like
8497 RAND_seed, but takes an extra argument for an entropy estimate
8498 (RAND_seed always assumes full entropy).
8501 *) Do more iterations of Rabin-Miller probable prime test (specifically,
8502 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
8503 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
8504 in crypto/bn/bn_prime.c for the complete table). This guarantees a
8505 false-positive rate of at most 2^-80 for random input.
8508 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
8511 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
8512 in the 0.9.5 release), this returns the chain
8513 from an X509_CTX structure with a dup of the stack and all
8514 the X509 reference counts upped: so the stack will exist
8515 after X509_CTX_cleanup() has been called. Modify pkcs12.c
8518 Also make SSL_SESSION_print() print out the verify return
8522 *) Add manpage for the pkcs12 command. Also change the default
8523 behaviour so MAC iteration counts are used unless the new
8524 -nomaciter option is used. This improves file security and
8525 only older versions of MSIE (4.0 for example) need it.
8528 *) Honor the no-xxx Configure options when creating .DEF files.
8531 *) Add PKCS#10 attributes to field table: challengePassword,
8532 unstructuredName and unstructuredAddress. These are taken from
8533 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
8534 international characters are used.
8536 More changes to X509_ATTRIBUTE code: allow the setting of types
8537 based on strings. Remove the 'loc' parameter when adding
8538 attributes because these will be a SET OF encoding which is sorted
8542 *) Initial changes to the 'req' utility to allow request generation
8543 automation. This will allow an application to just generate a template
8544 file containing all the field values and have req construct the
8547 Initial support for X509_ATTRIBUTE handling. Stacks of these are
8548 used all over the place including certificate requests and PKCS#7
8549 structures. They are currently handled manually where necessary with
8550 some primitive wrappers for PKCS#7. The new functions behave in a
8551 manner analogous to the X509 extension functions: they allow
8552 attributes to be looked up by NID and added.
8554 Later something similar to the X509V3 code would be desirable to
8555 automatically handle the encoding, decoding and printing of the
8556 more complex types. The string types like challengePassword can
8557 be handled by the string table functions.
8559 Also modified the multi byte string table handling. Now there is
8560 a 'global mask' which masks out certain types. The table itself
8561 can use the flag STABLE_NO_MASK to ignore the mask setting: this
8562 is useful when for example there is only one permissible type
8563 (as in countryName) and using the mask might result in no valid
8567 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
8568 SSL_get_peer_finished to allow applications to obtain the latest
8569 Finished messages sent to the peer or expected from the peer,
8570 respectively. (SSL_get_peer_finished is usually the Finished message
8571 actually received from the peer, otherwise the protocol will be aborted.)
8573 As the Finished message are message digests of the complete handshake
8574 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
8575 be used for external authentication procedures when the authentication
8576 provided by SSL/TLS is not desired or is not enough.
8579 *) Enhanced support for Alpha Linux is added. Now ./config checks if
8580 the host supports BWX extension and if Compaq C is present on the
8581 $PATH. Just exploiting of the BWX extension results in 20-30%
8582 performance kick for some algorithms, e.g. DES and RC4 to mention
8583 a couple. Compaq C in turn generates ~20% faster code for MD5 and
8587 *) Add support for MS "fast SGC". This is arguably a violation of the
8588 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
8589 weak crypto and after checking the certificate is SGC a second one
8590 with strong crypto. MS SGC stops the first handshake after receiving
8591 the server certificate message and sends a second client hello. Since
8592 a server will typically do all the time consuming operations before
8593 expecting any further messages from the client (server key exchange
8594 is the most expensive) there is little difference between the two.
8596 To get OpenSSL to support MS SGC we have to permit a second client
8597 hello message after we have sent server done. In addition we have to
8598 reset the MAC if we do get this second client hello.
8601 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
8602 if a DER encoded private key is RSA or DSA traditional format. Changed
8603 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
8604 format DER encoded private key. Newer code should use PKCS#8 format which
8605 has the key type encoded in the ASN1 structure. Added DER private key
8606 support to pkcs8 application.
8609 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
8610 ciphersuites has been selected (as required by the SSL 3/TLS 1
8611 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
8612 is set, we interpret this as a request to violate the specification
8613 (the worst that can happen is a handshake failure, and 'correct'
8614 behaviour would result in a handshake failure anyway).
8617 *) In SSL_CTX_add_session, take into account that there might be multiple
8618 SSL_SESSION structures with the same session ID (e.g. when two threads
8619 concurrently obtain them from an external cache).
8620 The internal cache can handle only one SSL_SESSION with a given ID,
8621 so if there's a conflict, we now throw out the old one to achieve
8625 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
8626 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
8627 some routines that use cipher OIDs: some ciphers do not have OIDs
8628 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
8632 *) Simplify the trust setting structure and code. Now we just have
8633 two sequences of OIDs for trusted and rejected settings. These will
8634 typically have values the same as the extended key usage extension
8635 and any application specific purposes.
8637 The trust checking code now has a default behaviour: it will just
8638 check for an object with the same NID as the passed id. Functions can
8639 be provided to override either the default behaviour or the behaviour
8640 for a given id. SSL client, server and email already have functions
8641 in place for compatibility: they check the NID and also return "trusted"
8642 if the certificate is self signed.
8645 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
8646 traditional format into an EVP_PKEY structure.
8649 *) Add a password callback function PEM_cb() which either prompts for
8650 a password if usr_data is NULL or otherwise assumes it is a null
8651 terminated password. Allow passwords to be passed on command line
8652 environment or config files in a few more utilities.
8655 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
8656 keys. Add some short names for PKCS#8 PBE algorithms and allow them
8657 to be specified on the command line for the pkcs8 and pkcs12 utilities.
8658 Update documentation.
8661 *) Support for ASN1 "NULL" type. This could be handled before by using
8662 ASN1_TYPE but there wasn't any function that would try to read a NULL
8663 and produce an error if it couldn't. For compatibility we also have
8664 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
8665 don't allocate anything because they don't need to.
8668 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
8670 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
8672 *) Rebuild of the memory allocation routines used by OpenSSL code and
8673 possibly others as well. The purpose is to make an interface that
8674 provide hooks so anyone can build a separate set of allocation and
8675 deallocation routines to be used by OpenSSL, for example memory
8676 pool implementations, or something else, which was previously hard
8677 since Malloc(), Realloc() and Free() were defined as macros having
8678 the values malloc, realloc and free, respectively (except for Win32
8679 compilations). The same is provided for memory debugging code.
8680 OpenSSL already comes with functionality to find memory leaks, but
8681 this gives people a chance to debug other memory problems.
8683 With these changes, a new set of functions and macros have appeared:
8685 CRYPTO_set_mem_debug_functions() [F]
8686 CRYPTO_get_mem_debug_functions() [F]
8687 CRYPTO_dbg_set_options() [F]
8688 CRYPTO_dbg_get_options() [F]
8689 CRYPTO_malloc_debug_init() [M]
8691 The memory debug functions are NULL by default, unless the library
8692 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
8693 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
8694 gives the standard debugging functions that come with OpenSSL) or
8695 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
8696 provided by the library user) must be used. When the standard
8697 debugging functions are used, CRYPTO_dbg_set_options can be used to
8698 request additional information:
8699 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
8700 the CRYPTO_MDEBUG_xxx macro when compiling the library.
8702 Also, things like CRYPTO_set_mem_functions will always give the
8703 expected result (the new set of functions is used for allocation
8704 and deallocation) at all times, regardless of platform and compiler
8707 To finish it up, some functions that were never use in any other
8708 way than through macros have a new API and new semantic:
8711 CRYPTO_dbg_realloc()
8714 All macros of value have retained their old syntax.
8715 [Richard Levitte and Bodo Moeller]
8717 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
8718 ordering of SMIMECapabilities wasn't in "strength order" and there
8719 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
8723 *) Some ASN1 types with illegal zero length encoding (INTEGER,
8724 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
8725 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
8727 *) Merge in my S/MIME library for OpenSSL. This provides a simple
8728 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
8729 functionality to handle multipart/signed properly) and a utility
8730 called 'smime' to call all this stuff. This is based on code I
8731 originally wrote for Celo who have kindly allowed it to be
8732 included in OpenSSL.
8735 *) Add variants des_set_key_checked and des_set_key_unchecked of
8736 des_set_key (aka des_key_sched). Global variable des_check_key
8737 decides which of these is called by des_set_key; this way
8738 des_check_key behaves as it always did, but applications and
8739 the library itself, which was buggy for des_check_key == 1,
8740 have a cleaner way to pick the version they need.
8743 *) New function PKCS12_newpass() which changes the password of a
8747 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
8748 dynamic mix. In both cases the ids can be used as an index into the
8749 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
8750 functions so they accept a list of the field values and the
8751 application doesn't need to directly manipulate the X509_TRUST
8755 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
8759 *) Modify the way the V3 extension code looks up extensions. This now
8760 works in a similar way to the object code: we have some "standard"
8761 extensions in a static table which is searched with OBJ_bsearch()
8762 and the application can add dynamic ones if needed. The file
8763 crypto/x509v3/ext_dat.h now has the info: this file needs to be
8764 updated whenever a new extension is added to the core code and kept
8765 in ext_nid order. There is a simple program 'tabtest.c' which checks
8766 this. New extensions are not added too often so this file can readily
8767 be maintained manually.
8769 There are two big advantages in doing things this way. The extensions
8770 can be looked up immediately and no longer need to be "added" using
8771 X509V3_add_standard_extensions(): this function now does nothing.
8772 [Side note: I get *lots* of email saying the extension code doesn't
8773 work because people forget to call this function]
8774 Also no dynamic allocation is done unless new extensions are added:
8775 so if we don't add custom extensions there is no need to call
8776 X509V3_EXT_cleanup().
8779 *) Modify enc utility's salting as follows: make salting the default. Add a
8780 magic header, so unsalted files fail gracefully instead of just decrypting
8781 to garbage. This is because not salting is a big security hole, so people
8782 should be discouraged from doing it.
8785 *) Fixes and enhancements to the 'x509' utility. It allowed a message
8786 digest to be passed on the command line but it only used this
8787 parameter when signing a certificate. Modified so all relevant
8788 operations are affected by the digest parameter including the
8789 -fingerprint and -x509toreq options. Also -x509toreq choked if a
8790 DSA key was used because it didn't fix the digest.
8793 *) Initial certificate chain verify code. Currently tests the untrusted
8794 certificates for consistency with the verify purpose (which is set
8795 when the X509_STORE_CTX structure is set up) and checks the pathlength.
8797 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
8798 this is because it will reject chains with invalid extensions whereas
8799 every previous version of OpenSSL and SSLeay made no checks at all.
8801 Trust code: checks the root CA for the relevant trust settings. Trust
8802 settings have an initial value consistent with the verify purpose: e.g.
8803 if the verify purpose is for SSL client use it expects the CA to be
8804 trusted for SSL client use. However the default value can be changed to
8805 permit custom trust settings: one example of this would be to only trust
8806 certificates from a specific "secure" set of CAs.
8808 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
8809 which should be used for version portability: especially since the
8810 verify structure is likely to change more often now.
8812 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
8813 to set them. If not set then assume SSL clients will verify SSL servers
8816 Two new options to the verify program: -untrusted allows a set of
8817 untrusted certificates to be passed in and -purpose which sets the
8818 intended purpose of the certificate. If a purpose is set then the
8819 new chain verify code is used to check extension consistency.
8822 *) Support for the authority information access extension.
8825 *) Modify RSA and DSA PEM read routines to transparently handle
8826 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
8827 public keys in a format compatible with certificate
8828 SubjectPublicKeyInfo structures. Unfortunately there were already
8829 functions called *_PublicKey_* which used various odd formats so
8830 these are retained for compatibility: however the DSA variants were
8831 never in a public release so they have been deleted. Changed dsa/rsa
8832 utilities to handle the new format: note no releases ever handled public
8833 keys so we should be OK.
8835 The primary motivation for this change is to avoid the same fiasco
8836 that dogs private keys: there are several incompatible private key
8837 formats some of which are standard and some OpenSSL specific and
8838 require various evil hacks to allow partial transparent handling and
8839 even then it doesn't work with DER formats. Given the option anything
8840 other than PKCS#8 should be dumped: but the other formats have to
8841 stay in the name of compatibility.
8843 With public keys and the benefit of hindsight one standard format
8844 is used which works with EVP_PKEY, RSA or DSA structures: though
8845 it clearly returns an error if you try to read the wrong kind of key.
8847 Added a -pubkey option to the 'x509' utility to output the public key.
8848 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
8849 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
8850 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
8851 that do the same as the EVP_PKEY_assign_*() except they up the
8852 reference count of the added key (they don't "swallow" the
8856 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
8857 CRLs would fail if the file contained no certificates or no CRLs:
8858 added a new function to read in both types and return the number
8859 read: this means that if none are read it will be an error. The
8860 DER versions of the certificate and CRL reader would always fail
8861 because it isn't possible to mix certificates and CRLs in DER format
8862 without choking one or the other routine. Changed this to just read
8863 a certificate: this is the best we can do. Also modified the code
8864 in apps/verify.c to take notice of return codes: it was previously
8865 attempting to read in certificates from NULL pointers and ignoring
8866 any errors: this is one reason why the cert and CRL reader seemed
8867 to work. It doesn't check return codes from the default certificate
8868 routines: these may well fail if the certificates aren't installed.
8871 *) Code to support otherName option in GeneralName.
8874 *) First update to verify code. Change the verify utility
8875 so it warns if it is passed a self signed certificate:
8876 for consistency with the normal behaviour. X509_verify
8877 has been modified to it will now verify a self signed
8878 certificate if *exactly* the same certificate appears
8879 in the store: it was previously impossible to trust a
8880 single self signed certificate. This means that:
8881 openssl verify ss.pem
8882 now gives a warning about a self signed certificate but
8883 openssl verify -CAfile ss.pem ss.pem
8887 *) For servers, store verify_result in SSL_SESSION data structure
8888 (and add it to external session representation).
8889 This is needed when client certificate verifications fails,
8890 but an application-provided verification callback (set by
8891 SSL_CTX_set_cert_verify_callback) allows accepting the session
8892 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
8893 but returns 1): When the session is reused, we have to set
8894 ssl->verify_result to the appropriate error code to avoid
8896 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
8898 *) Fix a bug in the new PKCS#7 code: it didn't consider the
8899 case in PKCS7_dataInit() where the signed PKCS7 structure
8900 didn't contain any existing data because it was being created.
8901 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
8903 *) Add a salt to the key derivation routines in enc.c. This
8904 forms the first 8 bytes of the encrypted file. Also add a
8905 -S option to allow a salt to be input on the command line.
8908 *) New function X509_cmp(). Oddly enough there wasn't a function
8909 to compare two certificates. We do this by working out the SHA1
8910 hash and comparing that. X509_cmp() will be needed by the trust
8914 *) SSL_get1_session() is like SSL_get_session(), but increments
8915 the reference count in the SSL_SESSION returned.
8916 [Geoff Thorpe <geoff@eu.c2.net>]
8918 *) Fix for 'req': it was adding a null to request attributes.
8919 Also change the X509_LOOKUP and X509_INFO code to handle
8920 certificate auxiliary information.
8923 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
8927 *) Add the possibility to add extra information to the memory leak
8928 detecting output, to form tracebacks, showing from where each
8929 allocation was originated: CRYPTO_push_info("constant string") adds
8930 the string plus current file name and line number to a per-thread
8931 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
8932 is like calling CYRPTO_pop_info() until the stack is empty.
8933 Also updated memory leak detection code to be multi-thread-safe.
8936 *) Add options -text and -noout to pkcs7 utility and delete the
8937 encryption options which never did anything. Update docs.
8940 *) Add options to some of the utilities to allow the pass phrase
8941 to be included on either the command line (not recommended on
8942 OSes like Unix) or read from the environment. Update the
8943 manpages and fix a few bugs.
8946 *) Add a few manpages for some of the openssl commands.
8949 *) Fix the -revoke option in ca. It was freeing up memory twice,
8950 leaking and not finding already revoked certificates.
8953 *) Extensive changes to support certificate auxiliary information.
8954 This involves the use of X509_CERT_AUX structure and X509_AUX
8955 functions. An X509_AUX function such as PEM_read_X509_AUX()
8956 can still read in a certificate file in the usual way but it
8957 will also read in any additional "auxiliary information". By
8958 doing things this way a fair degree of compatibility can be
8959 retained: existing certificates can have this information added
8960 using the new 'x509' options.
8962 Current auxiliary information includes an "alias" and some trust
8963 settings. The trust settings will ultimately be used in enhanced
8964 certificate chain verification routines: currently a certificate
8965 can only be trusted if it is self signed and then it is trusted
8969 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
8970 The problem was that one of the replacement routines had not been working
8971 since SSLeay releases. For now the offending routine has been replaced
8972 with non-optimised assembler. Even so, this now gives around 95%
8973 performance improvement for 1024 bit RSA signs.
8976 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
8977 handling. Most clients have the effective key size in bits equal to
8978 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
8979 A few however don't do this and instead use the size of the decrypted key
8980 to determine the RC2 key length and the AlgorithmIdentifier to determine
8981 the effective key length. In this case the effective key length can still
8982 be 40 bits but the key length can be 168 bits for example. This is fixed
8983 by manually forcing an RC2 key into the EVP_PKEY structure because the
8984 EVP code can't currently handle unusual RC2 key sizes: it always assumes
8985 the key length and effective key length are equal.
8988 *) Add a bunch of functions that should simplify the creation of
8989 X509_NAME structures. Now you should be able to do:
8990 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
8991 and have it automatically work out the correct field type and fill in
8992 the structures. The more adventurous can try:
8993 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
8994 and it will (hopefully) work out the correct multibyte encoding.
8997 *) Change the 'req' utility to use the new field handling and multibyte
8998 copy routines. Before the DN field creation was handled in an ad hoc
8999 way in req, ca, and x509 which was rather broken and didn't support
9000 BMPStrings or UTF8Strings. Since some software doesn't implement
9001 BMPStrings or UTF8Strings yet, they can be enabled using the config file
9002 using the dirstring_type option. See the new comment in the default
9003 openssl.cnf for more info.
9006 *) Make crypto/rand/md_rand.c more robust:
9007 - Assure unique random numbers after fork().
9008 - Make sure that concurrent threads access the global counter and
9009 md serializably so that we never lose entropy in them
9010 or use exactly the same state in multiple threads.
9011 Access to the large state is not always serializable because
9012 the additional locking could be a performance killer, and
9013 md should be large enough anyway.
9016 *) New file apps/app_rand.c with commonly needed functionality
9017 for handling the random seed file.
9019 Use the random seed file in some applications that previously did not:
9021 dsaparam -genkey (which also ignored its '-rand' option),
9024 x509 (when signing).
9025 Except on systems with /dev/urandom, it is crucial to have a random
9026 seed file at least for key creation, DSA signing, and for DH exchanges;
9027 for RSA signatures we could do without one.
9029 gendh and gendsa (unlike genrsa) used to read only the first byte
9030 of each file listed in the '-rand' option. The function as previously
9031 found in genrsa is now in app_rand.c and is used by all programs
9032 that support '-rand'.
9035 *) In RAND_write_file, use mode 0600 for creating files;
9036 don't just chmod when it may be too late.
9039 *) Report an error from X509_STORE_load_locations
9040 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
9043 *) New function ASN1_mbstring_copy() this copies a string in either
9044 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
9045 into an ASN1_STRING type. A mask of permissible types is passed
9046 and it chooses the "minimal" type to use or an error if not type
9050 *) Add function equivalents to the various macros in asn1.h. The old
9051 macros are retained with an M_ prefix. Code inside the library can
9052 use the M_ macros. External code (including the openssl utility)
9053 should *NOT* in order to be "shared library friendly".
9056 *) Add various functions that can check a certificate's extensions
9057 to see if it usable for various purposes such as SSL client,
9058 server or S/MIME and CAs of these types. This is currently
9059 VERY EXPERIMENTAL but will ultimately be used for certificate chain
9060 verification. Also added a -purpose flag to x509 utility to
9061 print out all the purposes.
9064 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
9068 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
9069 for, obtain and decode and extension and obtain its critical flag.
9070 This allows all the necessary extension code to be handled in a
9071 single function call.
9074 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
9075 platforms. See crypto/rc4/rc4_enc.c for further details.
9078 *) New -noout option to asn1parse. This causes no output to be produced
9079 its main use is when combined with -strparse and -out to extract data
9080 from a file (which may not be in ASN.1 format).
9083 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
9084 when producing the local key id.
9085 [Richard Levitte <levitte@stacken.kth.se>]
9087 *) New option -dhparam in s_server. This allows a DH parameter file to be
9088 stated explicitly. If it is not stated then it tries the first server
9089 certificate file. The previous behaviour hard coded the filename
9093 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
9094 a public key to be input or output. For example:
9095 openssl rsa -in key.pem -pubout -out pubkey.pem
9096 Also added necessary DSA public key functions to handle this.
9099 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
9100 in the message. This was handled by allowing
9101 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
9102 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
9104 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
9105 to the end of the strings whereas this didn't. This would cause problems
9106 if strings read with d2i_ASN1_bytes() were later modified.
9107 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
9109 *) Fix for base64 decode bug. When a base64 bio reads only one line of
9110 data and it contains EOF it will end up returning an error. This is
9111 caused by input 46 bytes long. The cause is due to the way base64
9112 BIOs find the start of base64 encoded data. They do this by trying a
9113 trial decode on each line until they find one that works. When they
9114 do a flag is set and it starts again knowing it can pass all the
9115 data directly through the decoder. Unfortunately it doesn't reset
9116 the context it uses. This means that if EOF is reached an attempt
9117 is made to pass two EOFs through the context and this causes the
9118 resulting error. This can also cause other problems as well. As is
9119 usual with these problems it takes *ages* to find and the fix is
9120 trivial: move one line.
9121 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
9123 *) Ugly workaround to get s_client and s_server working under Windows. The
9124 old code wouldn't work because it needed to select() on sockets and the
9125 tty (for keypresses and to see if data could be written). Win32 only
9126 supports select() on sockets so we select() with a 1s timeout on the
9127 sockets and then see if any characters are waiting to be read, if none
9128 are present then we retry, we also assume we can always write data to
9129 the tty. This isn't nice because the code then blocks until we've
9130 received a complete line of data and it is effectively polling the
9131 keyboard at 1s intervals: however it's quite a bit better than not
9132 working at all :-) A dedicated Windows application might handle this
9133 with an event loop for example.
9136 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
9137 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
9138 will be called when RSA_sign() and RSA_verify() are used. This is useful
9139 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
9140 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
9141 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
9142 This necessitated the support of an extra signature type NID_md5_sha1
9143 for SSL signatures and modifications to the SSL library to use it instead
9144 of calling RSA_public_decrypt() and RSA_private_encrypt().
9147 *) Add new -verify -CAfile and -CApath options to the crl program, these
9148 will lookup a CRL issuers certificate and verify the signature in a
9149 similar way to the verify program. Tidy up the crl program so it
9150 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
9151 less strict. It will now permit CRL extensions even if it is not
9152 a V2 CRL: this will allow it to tolerate some broken CRLs.
9155 *) Initialize all non-automatic variables each time one of the openssl
9156 sub-programs is started (this is necessary as they may be started
9157 multiple times from the "OpenSSL>" prompt).
9158 [Lennart Bang, Bodo Moeller]
9160 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
9161 removing all other RSA functionality (this is what NO_RSA does). This
9162 is so (for example) those in the US can disable those operations covered
9163 by the RSA patent while allowing storage and parsing of RSA keys and RSA
9167 *) Non-copying interface to BIO pairs.
9168 (still largely untested)
9171 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
9172 ASCII string. This was handled independently in various places before.
9175 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
9176 UTF8 strings a character at a time.
9179 *) Use client_version from client hello to select the protocol
9180 (s23_srvr.c) and for RSA client key exchange verification
9181 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
9184 *) Add various utility functions to handle SPKACs, these were previously
9185 handled by poking round in the structure internals. Added new function
9186 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
9187 print, verify and generate SPKACs. Based on an original idea from
9188 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
9191 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
9194 *) Allow the config file extension section to be overwritten on the
9195 command line. Based on an original idea from Massimiliano Pala
9196 <madwolf@comune.modena.it>. The new option is called -extensions
9197 and can be applied to ca, req and x509. Also -reqexts to override
9198 the request extensions in req and -crlexts to override the crl extensions
9202 *) Add new feature to the SPKAC handling in ca. Now you can include
9203 the same field multiple times by preceding it by "XXXX." for example:
9206 this is the same syntax as used in the req config file.
9209 *) Allow certificate extensions to be added to certificate requests. These
9210 are specified in a 'req_extensions' option of the req section of the
9211 config file. They can be printed out with the -text option to req but
9212 are otherwise ignored at present.
9215 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
9216 data read consists of only the final block it would not decrypted because
9217 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
9218 A misplaced 'break' also meant the decrypted final block might not be
9219 copied until the next read.
9222 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
9223 a few extra parameters to the DH structure: these will be useful if
9224 for example we want the value of 'q' or implement X9.42 DH.
9227 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
9228 provides hooks that allow the default DSA functions or functions on a
9229 "per key" basis to be replaced. This allows hardware acceleration and
9230 hardware key storage to be handled without major modification to the
9231 library. Also added low level modexp hooks and CRYPTO_EX structure and
9232 associated functions.
9235 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
9236 as "read only": it can't be written to and the buffer it points to will
9237 not be freed. Reading from a read only BIO is much more efficient than
9238 a normal memory BIO. This was added because there are several times when
9239 an area of memory needs to be read from a BIO. The previous method was
9240 to create a memory BIO and write the data to it, this results in two
9241 copies of the data and an O(n^2) reading algorithm. There is a new
9242 function BIO_new_mem_buf() which creates a read only memory BIO from
9243 an area of memory. Also modified the PKCS#7 routines to use read only
9247 *) Bugfix: ssl23_get_client_hello did not work properly when called in
9248 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
9249 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
9250 but a retry condition occured while trying to read the rest.
9253 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
9254 NID_pkcs7_encrypted by default: this was wrong since this should almost
9255 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
9256 the encrypted data type: this is a more sensible place to put it and it
9257 allows the PKCS#12 code to be tidied up that duplicated this
9261 *) Changed obj_dat.pl script so it takes its input and output files on
9262 the command line. This should avoid shell escape redirection problems
9266 *) Initial support for certificate extension requests, these are included
9267 in things like Xenroll certificate requests. Included functions to allow
9268 extensions to be obtained and added.
9271 *) -crlf option to s_client and s_server for sending newlines as
9272 CRLF (as required by many protocols).
9275 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
9277 *) Install libRSAglue.a when OpenSSL is built with RSAref.
9278 [Ralf S. Engelschall]
9280 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
9281 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
9283 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
9287 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
9288 DH parameters/keys (q is lost during that conversion, but the resulting
9289 DH parameters contain its length).
9291 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
9292 much faster than DH_generate_parameters (which creates parameters
9293 where p = 2*q + 1), and also the smaller q makes DH computations
9294 much more efficient (160-bit exponentiation instead of 1024-bit
9295 exponentiation); so this provides a convenient way to support DHE
9296 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
9297 utter importance to use
9298 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9300 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9301 when such DH parameters are used, because otherwise small subgroup
9302 attacks may become possible!
9305 *) Avoid memory leak in i2d_DHparams.
9308 *) Allow the -k option to be used more than once in the enc program:
9309 this allows the same encrypted message to be read by multiple recipients.
9312 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
9313 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
9314 it will always use the numerical form of the OID, even if it has a short
9318 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
9319 method only got called if p,q,dmp1,dmq1,iqmp components were present,
9320 otherwise bn_mod_exp was called. In the case of hardware keys for example
9321 no private key components need be present and it might store extra data
9322 in the RSA structure, which cannot be accessed from bn_mod_exp.
9323 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
9324 private key operations.
9327 *) Added support for SPARC Linux.
9330 *) pem_password_cb function type incompatibly changed from
9331 typedef int pem_password_cb(char *buf, int size, int rwflag);
9333 ....(char *buf, int size, int rwflag, void *userdata);
9334 so that applications can pass data to their callbacks:
9335 The PEM[_ASN1]_{read,write}... functions and macros now take an
9336 additional void * argument, which is just handed through whenever
9337 the password callback is called.
9338 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
9340 New function SSL_CTX_set_default_passwd_cb_userdata.
9342 Compatibility note: As many C implementations push function arguments
9343 onto the stack in reverse order, the new library version is likely to
9344 interoperate with programs that have been compiled with the old
9345 pem_password_cb definition (PEM_whatever takes some data that
9346 happens to be on the stack as its last argument, and the callback
9347 just ignores this garbage); but there is no guarantee whatsoever that
9350 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
9351 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
9352 problems not only on Windows, but also on some Unix platforms.
9353 To avoid problematic command lines, these definitions are now in an
9354 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
9355 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
9358 *) MIPS III/IV assembler module is reimplemented.
9361 *) More DES library cleanups: remove references to srand/rand and
9362 delete an unused file.
9365 *) Add support for the the free Netwide assembler (NASM) under Win32,
9366 since not many people have MASM (ml) and it can be hard to obtain.
9367 This is currently experimental but it seems to work OK and pass all
9368 the tests. Check out INSTALL.W32 for info.
9371 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
9372 without temporary keys kept an extra copy of the server key,
9373 and connections with temporary keys did not free everything in case
9377 *) New function RSA_check_key and new openssl rsa option -check
9378 for verifying the consistency of RSA keys.
9379 [Ulf Moeller, Bodo Moeller]
9381 *) Various changes to make Win32 compile work:
9382 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
9383 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
9384 comparison" warnings.
9385 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
9388 *) Add a debugging option to PKCS#5 v2 key generation function: when
9389 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
9390 derived keys are printed to stderr.
9393 *) Copy the flags in ASN1_STRING_dup().
9394 [Roman E. Pavlov <pre@mo.msk.ru>]
9396 *) The x509 application mishandled signing requests containing DSA
9397 keys when the signing key was also DSA and the parameters didn't match.
9399 It was supposed to omit the parameters when they matched the signing key:
9400 the verifying software was then supposed to automatically use the CA's
9401 parameters if they were absent from the end user certificate.
9403 Omitting parameters is no longer recommended. The test was also
9404 the wrong way round! This was probably due to unusual behaviour in
9405 EVP_cmp_parameters() which returns 1 if the parameters match.
9406 This meant that parameters were omitted when they *didn't* match and
9407 the certificate was useless. Certificates signed with 'ca' didn't have
9409 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
9411 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
9412 The interface is as follows:
9413 Applications can use
9414 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
9415 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
9416 "off" is now the default.
9417 The library internally uses
9418 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
9419 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
9420 to disable memory-checking temporarily.
9422 Some inconsistent states that previously were possible (and were
9423 even the default) are now avoided.
9425 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
9426 with each memory chunk allocated; this is occasionally more helpful
9427 than just having a counter.
9429 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
9431 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
9435 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
9436 which largely parallels "options", but is for changing API behaviour,
9437 whereas "options" are about protocol behaviour.
9438 Initial "mode" flags are:
9440 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
9441 a single record has been written.
9442 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
9443 retries use the same buffer location.
9444 (But all of the contents must be
9448 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
9451 *) Fix problems with no-hmac etc.
9452 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
9454 *) New functions RSA_get_default_method(), RSA_set_method() and
9455 RSA_get_method(). These allows replacement of RSA_METHODs without having
9456 to mess around with the internals of an RSA structure.
9459 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
9460 Also really enable memory leak checks in openssl.c and in some
9462 [Chad C. Mulligan, Bodo Moeller]
9464 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
9465 up the length of negative integers. This has now been simplified to just
9466 store the length when it is first determined and use it later, rather
9467 than trying to keep track of where data is copied and updating it to
9469 [Steve Henson, reported by Brien Wheeler
9470 <bwheeler@authentica-security.com>]
9472 *) Add a new function PKCS7_signatureVerify. This allows the verification
9473 of a PKCS#7 signature but with the signing certificate passed to the
9474 function itself. This contrasts with PKCS7_dataVerify which assumes the
9475 certificate is present in the PKCS#7 structure. This isn't always the
9476 case: certificates can be omitted from a PKCS#7 structure and be
9477 distributed by "out of band" means (such as a certificate database).
9480 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
9481 function prototypes in pem.h, also change util/mkdef.pl to add the
9482 necessary function names.
9485 *) mk1mf.pl (used by Windows builds) did not properly read the
9486 options set by Configure in the top level Makefile, and Configure
9487 was not even able to write more than one option correctly.
9488 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
9491 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
9492 file to be loaded from a BIO or FILE pointer. The BIO version will
9493 for example allow memory BIOs to contain config info.
9496 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
9497 Whoever hopes to achieve shared-library compatibility across versions
9498 must use this, not the compile-time macro.
9499 (Exercise 0.9.4: Which is the minimum library version required by
9501 Note: All this applies only to multi-threaded programs, others don't
9505 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
9506 through a BIO pair triggered the default case, i.e.
9507 SSLerr(...,SSL_R_UNKNOWN_STATE).
9510 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
9511 can use the SSL library even if none of the specific BIOs is
9515 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
9516 for the encoded length.
9517 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
9519 *) Add initial documentation of the X509V3 functions.
9522 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
9523 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
9524 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
9525 secure PKCS#8 private key format with a high iteration count.
9528 *) Fix determination of Perl interpreter: A perl or perl5
9529 _directory_ in $PATH was also accepted as the interpreter.
9530 [Ralf S. Engelschall]
9532 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
9533 wrong with it but it was very old and did things like calling
9534 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
9538 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
9539 to use the new extension code.
9542 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
9543 with macros. This should make it easier to change their form, add extra
9544 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
9548 *) Add to configuration table a new entry that can specify an alternative
9549 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
9550 according to Mark Crispin <MRC@Panda.COM>.
9554 *) DES CBC did not update the IV. Weird.
9557 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
9558 Changing the behaviour of the former might break existing programs --
9559 where IV updating is needed, des_ncbc_encrypt can be used.
9562 *) When bntest is run from "make test" it drives bc to check its
9563 calculations, as well as internally checking them. If an internal check
9564 fails, it needs to cause bc to give a non-zero result or make test carries
9565 on without noticing the failure. Fixed.
9568 *) DES library cleanups.
9571 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
9572 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
9573 ciphers. NOTE: although the key derivation function has been verified
9574 against some published test vectors it has not been extensively tested
9575 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
9579 *) Instead of "mkdir -p", which is not fully portable, use new
9580 Perl script "util/mkdir-p.pl".
9583 *) Rewrite the way password based encryption (PBE) is handled. It used to
9584 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
9585 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
9586 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
9587 the 'parameter' field of the AlgorithmIdentifier is passed to the
9588 underlying key generation function so it must do its own ASN1 parsing.
9589 This has also changed the EVP_PBE_CipherInit() function which now has a
9590 'parameter' argument instead of literal salt and iteration count values
9591 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
9594 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
9595 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
9596 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
9597 KEY" because this clashed with PKCS#8 unencrypted string. Since this
9598 value was just used as a "magic string" and not used directly its
9599 value doesn't matter.
9602 *) Introduce some semblance of const correctness to BN. Shame C doesn't
9606 *) "linux-sparc64" configuration (ultrapenguin).
9607 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
9608 "linux-sparc" configuration.
9609 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
9611 *) config now generates no-xxx options for missing ciphers.
9614 *) Support the EBCDIC character set (work in progress).
9615 File ebcdic.c not yet included because it has a different license.
9616 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9618 *) Support BS2000/OSD-POSIX.
9619 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9621 *) Make callbacks for key generation use void * instead of char *.
9624 *) Make S/MIME samples compile (not yet tested).
9627 *) Additional typesafe stacks.
9630 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
9634 Changes between 0.9.3 and 0.9.3a [29 May 1999]
9636 *) New configuration variant "sco5-gcc".
9638 *) Updated some demos.
9639 [Sean O Riordain, Wade Scholine]
9641 *) Add missing BIO_free at exit of pkcs12 application.
9644 *) Fix memory leak in conf.c.
9647 *) Updates for Win32 to assembler version of MD5.
9650 *) Set #! path to perl in apps/der_chop to where we found it
9651 instead of using a fixed path.
9654 *) SHA library changes for irix64-mips4-cc.
9657 *) Improvements for VMS support.
9661 Changes between 0.9.2b and 0.9.3 [24 May 1999]
9663 *) Bignum library bug fix. IRIX 6 passes "make test" now!
9664 This also avoids the problems with SC4.2 and unpatched SC5.
9665 [Andy Polyakov <appro@fy.chalmers.se>]
9667 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
9668 These are required because of the typesafe stack would otherwise break
9669 existing code. If old code used a structure member which used to be STACK
9670 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
9671 sk_num or sk_value it would produce an error because the num, data members
9672 are not present in STACK_OF. Now it just produces a warning. sk_set
9673 replaces the old method of assigning a value to sk_value
9674 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
9675 that does this will no longer work (and should use sk_set instead) but
9676 this could be regarded as a "questionable" behaviour anyway.
9679 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
9680 correctly handle encrypted S/MIME data.
9683 *) Change type of various DES function arguments from des_cblock
9684 (which means, in function argument declarations, pointer to char)
9685 to des_cblock * (meaning pointer to array with 8 char elements),
9686 which allows the compiler to do more typechecking; it was like
9687 that back in SSLeay, but with lots of ugly casts.
9689 Introduce new type const_des_cblock.
9692 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
9693 problems: find RecipientInfo structure that matches recipient certificate
9694 and initialise the ASN1 structures properly based on passed cipher.
9697 *) Belatedly make the BN tests actually check the results.
9700 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
9701 to and from BNs: it was completely broken. New compilation option
9702 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
9703 key elements as negative integers.
9706 *) Reorganize and speed up MD5.
9707 [Andy Polyakov <appro@fy.chalmers.se>]
9710 [Richard Levitte <richard@levitte.org>]
9712 *) New option -out to asn1parse to allow the parsed structure to be
9713 output to a file. This is most useful when combined with the -strparse
9714 option to examine the output of things like OCTET STRINGS.
9717 *) Make SSL library a little more fool-proof by not requiring any longer
9718 that SSL_set_{accept,connect}_state be called before
9719 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
9720 in many applications because usually everything *appeared* to work as
9721 intended anyway -- now it really works as intended).
9724 *) Move openssl.cnf out of lib/.
9727 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
9728 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
9729 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
9730 [Ralf S. Engelschall]
9732 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
9733 handle PKCS#7 enveloped data properly.
9734 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
9736 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
9737 copying pointers. The cert_st handling is changed by this in
9738 various ways (and thus what used to be known as ctx->default_cert
9739 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
9740 any longer when s->cert does not give us what we need).
9741 ssl_cert_instantiate becomes obsolete by this change.
9742 As soon as we've got the new code right (possibly it already is?),
9743 we have solved a couple of bugs of the earlier code where s->cert
9744 was used as if it could not have been shared with other SSL structures.
9746 Note that using the SSL API in certain dirty ways now will result
9747 in different behaviour than observed with earlier library versions:
9748 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
9749 does not influence s as it used to.
9751 In order to clean up things more thoroughly, inside SSL_SESSION
9752 we don't use CERT any longer, but a new structure SESS_CERT
9753 that holds per-session data (if available); currently, this is
9754 the peer's certificate chain and, for clients, the server's certificate
9755 and temporary key. CERT holds only those values that can have
9756 meaningful defaults in an SSL_CTX.
9759 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
9760 from the internal representation. Various PKCS#7 fixes: remove some
9761 evil casts and set the enc_dig_alg field properly based on the signing
9765 *) Allow PKCS#12 password to be set from the command line or the
9766 environment. Let 'ca' get its config file name from the environment
9767 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
9771 *) Allow certificate policies extension to use an IA5STRING for the
9772 organization field. This is contrary to the PKIX definition but
9773 VeriSign uses it and IE5 only recognises this form. Document 'x509'
9777 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
9778 without disallowing inline assembler and the like for non-pedantic builds.
9781 *) Support Borland C++ builder.
9782 [Janez Jere <jj@void.si>, modified by Ulf Möller]
9787 *) SHA-1 cleanups and performance enhancements.
9788 [Andy Polyakov <appro@fy.chalmers.se>]
9790 *) Sparc v8plus assembler for the bignum library.
9791 [Andy Polyakov <appro@fy.chalmers.se>]
9793 *) Accept any -xxx and +xxx compiler options in Configure.
9796 *) Update HPUX configuration.
9799 *) Add missing sk_<type>_unshift() function to safestack.h
9800 [Ralf S. Engelschall]
9802 *) New function SSL_CTX_use_certificate_chain_file that sets the
9803 "extra_cert"s in addition to the certificate. (This makes sense
9804 only for "PEM" format files, as chains as a whole are not
9808 *) Support verify_depth from the SSL API.
9809 x509_vfy.c had what can be considered an off-by-one-error:
9810 Its depth (which was not part of the external interface)
9811 was actually counting the number of certificates in a chain;
9812 now it really counts the depth.
9815 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
9816 instead of X509err, which often resulted in confusing error
9817 messages since the error codes are not globally unique
9818 (e.g. an alleged error in ssl3_accept when a certificate
9819 didn't match the private key).
9821 *) New function SSL_CTX_set_session_id_context that allows to set a default
9822 value (so that you don't need SSL_set_session_id_context for each
9823 connection using the SSL_CTX).
9826 *) OAEP decoding bug fix.
9829 *) Support INSTALL_PREFIX for package builders, as proposed by
9833 *) New Configure options "threads" and "no-threads". For systems
9834 where the proper compiler options are known (currently Solaris
9835 and Linux), "threads" is the default.
9838 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
9841 *) Install various scripts to $(OPENSSLDIR)/misc, not to
9842 $(INSTALLTOP)/bin -- they shouldn't clutter directories
9843 such as /usr/local/bin.
9846 *) "make linux-shared" to build shared libraries.
9847 [Niels Poppe <niels@netbox.org>]
9849 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
9852 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
9853 extension adding in x509 utility.
9856 *) Remove NOPROTO sections and error code comments.
9859 *) Partial rewrite of the DEF file generator to now parse the ANSI
9863 *) New Configure options --prefix=DIR and --openssldir=DIR.
9866 *) Complete rewrite of the error code script(s). It is all now handled
9867 by one script at the top level which handles error code gathering,
9868 header rewriting and C source file generation. It should be much better
9869 than the old method: it now uses a modified version of Ulf's parser to
9870 read the ANSI prototypes in all header files (thus the old K&R definitions
9871 aren't needed for error creation any more) and do a better job of
9872 translating function codes into names. The old 'ASN1 error code imbedded
9873 in a comment' is no longer necessary and it doesn't use .err files which
9874 have now been deleted. Also the error code call doesn't have to appear all
9875 on one line (which resulted in some large lines...).
9878 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
9881 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
9882 0 (which usually indicates a closed connection), but continue reading.
9885 *) Fix some race conditions.
9888 *) Add support for CRL distribution points extension. Add Certificate
9889 Policies and CRL distribution points documentation.
9892 *) Move the autogenerated header file parts to crypto/opensslconf.h.
9895 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
9896 8 of keying material. Merlin has also confirmed interop with this fix
9897 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
9898 [Merlin Hughes <merlin@baltimore.ie>]
9900 *) Fix lots of warnings.
9901 [Richard Levitte <levitte@stacken.kth.se>]
9903 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
9904 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
9905 [Richard Levitte <levitte@stacken.kth.se>]
9907 *) Fix problems with sizeof(long) == 8.
9908 [Andy Polyakov <appro@fy.chalmers.se>]
9910 *) Change functions to ANSI C.
9913 *) Fix typos in error codes.
9914 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
9916 *) Remove defunct assembler files from Configure.
9919 *) SPARC v8 assembler BIGNUM implementation.
9920 [Andy Polyakov <appro@fy.chalmers.se>]
9922 *) Support for Certificate Policies extension: both print and set.
9923 Various additions to support the r2i method this uses.
9926 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
9927 return a const string when you are expecting an allocated buffer.
9930 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
9931 types DirectoryString and DisplayText.
9934 *) Add code to allow r2i extensions to access the configuration database,
9935 add an LHASH database driver and add several ctx helper functions.
9938 *) Fix an evil bug in bn_expand2() which caused various BN functions to
9939 fail when they extended the size of a BIGNUM.
9942 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
9943 support typesafe stack.
9946 *) Fix typo in SSL_[gs]et_options().
9947 [Nils Frostberg <nils@medcom.se>]
9949 *) Delete various functions and files that belonged to the (now obsolete)
9950 old X509V3 handling code.
9953 *) New Configure option "rsaref".
9956 *) Don't auto-generate pem.h.
9959 *) Introduce type-safe ASN.1 SETs.
9962 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
9963 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
9965 *) Introduce type-safe STACKs. This will almost certainly break lots of code
9966 that links with OpenSSL (well at least cause lots of warnings), but fear
9967 not: the conversion is trivial, and it eliminates loads of evil casts. A
9968 few STACKed things have been converted already. Feel free to convert more.
9969 In the fullness of time, I'll do away with the STACK type altogether.
9972 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
9973 specified in <certfile> by updating the entry in the index.txt file.
9974 This way one no longer has to edit the index.txt file manually for
9975 revoking a certificate. The -revoke option does the gory details now.
9976 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
9978 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
9979 `-text' option at all and this way the `-noout -text' combination was
9980 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
9981 [Ralf S. Engelschall]
9983 *) Make sure a corresponding plain text error message exists for the
9984 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
9985 verify callback function determined that a certificate was revoked.
9986 [Ralf S. Engelschall]
9988 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
9989 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
9990 all available cipers including rc5, which was forgotten until now.
9991 In order to let the testing shell script know which algorithms
9992 are available, a new (up to now undocumented) command
9993 "openssl list-cipher-commands" is used.
9996 *) Bugfix: s_client occasionally would sleep in select() when
9997 it should have checked SSL_pending() first.
10000 *) New functions DSA_do_sign and DSA_do_verify to provide access to
10001 the raw DSA values prior to ASN.1 encoding.
10004 *) Tweaks to Configure
10005 [Niels Poppe <niels@netbox.org>]
10007 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
10011 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
10014 *) New config option to avoid instructions that are illegal on the 80386.
10015 The default code is faster, but requires at least a 486.
10018 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
10019 SSL2_SERVER_VERSION (not used at all) macros, which are now the
10020 same as SSL2_VERSION anyway.
10023 *) New "-showcerts" option for s_client.
10026 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
10027 application. Various cleanups and fixes.
10030 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
10031 modify error routines to work internally. Add error codes and PBE init
10032 to library startup routines.
10035 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
10036 packing functions to asn1 and evp. Changed function names and error
10037 codes along the way.
10040 *) PKCS12 integration: and so it begins... First of several patches to
10041 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
10042 objects to objects.h
10045 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
10046 and display support for Thawte strong extranet extension.
10049 *) Add LinuxPPC support.
10050 [Jeff Dubrule <igor@pobox.org>]
10052 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
10053 bn_div_words in alpha.s.
10054 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
10056 *) Make sure the RSA OAEP test is skipped under -DRSAref because
10057 OAEP isn't supported when OpenSSL is built with RSAref.
10058 [Ulf Moeller <ulf@fitug.de>]
10060 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
10061 so they no longer are missing under -DNOPROTO.
10062 [Soren S. Jorvang <soren@t.dk>]
10065 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
10067 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
10068 doesn't work when the session is reused. Coming soon!
10071 *) Fix a security hole, that allows sessions to be reused in the wrong
10072 context thus bypassing client cert protection! All software that uses
10073 client certs and session caches in multiple contexts NEEDS PATCHING to
10074 allow session reuse! A fuller solution is in the works.
10075 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
10077 *) Some more source tree cleanups (removed obsolete files
10078 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
10079 permission on "config" script to be executable) and a fix for the INSTALL
10081 [Ulf Moeller <ulf@fitug.de>]
10083 *) Remove some legacy and erroneous uses of malloc, free instead of
10085 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
10087 *) Make rsa_oaep_test return non-zero on error.
10088 [Ulf Moeller <ulf@fitug.de>]
10090 *) Add support for native Solaris shared libraries. Configure
10091 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
10092 if someone would make that last step automatic.
10093 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
10095 *) ctx_size was not built with the right compiler during "make links". Fixed.
10098 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
10099 except NULL ciphers". This means the default cipher list will no longer
10100 enable NULL ciphers. They need to be specifically enabled e.g. with
10101 the string "DEFAULT:eNULL".
10104 *) Fix to RSA private encryption routines: if p < q then it would
10105 occasionally produce an invalid result. This will only happen with
10106 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
10109 *) Be less restrictive and allow also `perl util/perlpath.pl
10110 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
10111 because this way one can also use an interpreter named `perl5' (which is
10112 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
10113 installed as `perl').
10114 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10116 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
10117 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10119 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
10120 advapi32.lib to Win32 build and change the pem test comparison
10121 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
10122 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
10123 and crypto/des/ede_cbcm_enc.c.
10126 *) DES quad checksum was broken on big-endian architectures. Fixed.
10129 *) Comment out two functions in bio.h that aren't implemented. Fix up the
10130 Win32 test batch file so it (might) work again. The Win32 test batch file
10131 is horrible: I feel ill....
10134 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
10135 in e_os.h. Audit of header files to check ANSI and non ANSI
10136 sections: 10 functions were absent from non ANSI section and not exported
10137 from Windows DLLs. Fixed up libeay.num for new functions.
10140 *) Make `openssl version' output lines consistent.
10141 [Ralf S. Engelschall]
10143 *) Fix Win32 symbol export lists for BIO functions: Added
10144 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
10145 to ms/libeay{16,32}.def.
10146 [Ralf S. Engelschall]
10148 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
10149 fine under Unix and passes some trivial tests I've now added. But the
10150 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
10151 added to make sure no one expects that this stuff really works in the
10152 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
10153 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
10155 [Ralf S. Engelschall]
10157 *) Fix the generation of two part addresses in perl.
10158 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
10160 *) Add config entry for Linux on MIPS.
10161 [John Tobey <jtobey@channel1.com>]
10163 *) Make links whenever Configure is run, unless we are on Windoze.
10166 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
10167 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
10171 *) Add a useful kludge to allow package maintainers to specify compiler and
10172 other platforms details on the command line without having to patch the
10173 Configure script everytime: One now can use ``perl Configure
10174 <id>:<details>'', i.e. platform ids are allowed to have details appended
10175 to them (separated by colons). This is treated as there would be a static
10176 pre-configured entry in Configure's %table under key <id> with value
10177 <details> and ``perl Configure <id>'' is called. So, when you want to
10178 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
10179 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
10180 now, which overrides the FreeBSD-elf entry on-the-fly.
10181 [Ralf S. Engelschall]
10183 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
10186 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
10187 on the `perl Configure ...' command line. This way one can compile
10188 OpenSSL libraries with Position Independent Code (PIC) which is needed
10189 for linking it into DSOs.
10190 [Ralf S. Engelschall]
10192 *) Remarkably, export ciphers were totally broken and no-one had noticed!
10196 *) Cleaned up the LICENSE document: The official contact for any license
10197 questions now is the OpenSSL core team under openssl-core@openssl.org.
10198 And add a paragraph about the dual-license situation to make sure people
10199 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
10200 to the OpenSSL toolkit.
10201 [Ralf S. Engelschall]
10203 *) General source tree makefile cleanups: Made `making xxx in yyy...'
10204 display consistent in the source tree and replaced `/bin/rm' by `rm'.
10205 Additionally cleaned up the `make links' target: Remove unnecessary
10206 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
10207 to speed processing and no longer clutter the display with confusing
10208 stuff. Instead only the actually done links are displayed.
10209 [Ralf S. Engelschall]
10211 *) Permit null encryption ciphersuites, used for authentication only. It used
10212 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
10213 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
10217 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
10218 signed attributes when verifying signatures (this would break them),
10219 the detached data encoding was wrong and public keys obtained using
10220 X509_get_pubkey() weren't freed.
10223 *) Add text documentation for the BUFFER functions. Also added a work around
10224 to a Win95 console bug. This was triggered by the password read stuff: the
10225 last character typed gets carried over to the next fread(). If you were
10226 generating a new cert request using 'req' for example then the last
10227 character of the passphrase would be CR which would then enter the first
10231 *) Added the new `Includes OpenSSL Cryptography Software' button as
10232 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
10233 button and can be used by applications based on OpenSSL to show the
10234 relationship to the OpenSSL project.
10235 [Ralf S. Engelschall]
10237 *) Remove confusing variables in function signatures in files
10238 ssl/ssl_lib.c and ssl/ssl.h.
10239 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10241 *) Don't install bss_file.c under PREFIX/include/
10242 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10244 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
10245 functions that return function pointers and has support for NT specific
10246 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
10247 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
10248 unsigned to signed types: this was killing the Win32 compile.
10251 *) Add new certificate file to stack functions,
10252 SSL_add_dir_cert_subjects_to_stack() and
10253 SSL_add_file_cert_subjects_to_stack(). These largely supplant
10254 SSL_load_client_CA_file(), and can be used to add multiple certs easily
10255 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
10256 This means that Apache-SSL and similar packages don't have to mess around
10257 to add as many CAs as they want to the preferred list.
10260 *) Experiment with doxygen documentation. Currently only partially applied to
10262 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
10263 openssl.doxy as the configuration file.
10266 *) Get rid of remaining C++-style comments which strict C compilers hate.
10267 [Ralf S. Engelschall, pointed out by Carlos Amengual]
10269 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
10270 compiled in by default: it has problems with large keys.
10273 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
10274 DH private keys and/or callback functions which directly correspond to
10275 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
10276 is needed for applications which have to configure certificates on a
10277 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
10279 For the RSA certificate situation is makes no difference, but
10280 for the DSA certificate situation this fixes the "no shared cipher"
10281 problem where the OpenSSL cipher selection procedure failed because the
10282 temporary keys were not overtaken from the context and the API provided
10283 no way to reconfigure them.
10284 The new functions now let applications reconfigure the stuff and they
10285 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
10286 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
10287 non-public-API function ssl_cert_instantiate() is used as a helper
10288 function and also to reduce code redundancy inside ssl_rsa.c.
10289 [Ralf S. Engelschall]
10291 *) Move s_server -dcert and -dkey options out of the undocumented feature
10292 area because they are useful for the DSA situation and should be
10293 recognized by the users.
10294 [Ralf S. Engelschall]
10296 *) Fix the cipher decision scheme for export ciphers: the export bits are
10297 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
10298 SSL_EXP_MASK. So, the original variable has to be used instead of the
10299 already masked variable.
10300 [Richard Levitte <levitte@stacken.kth.se>]
10302 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
10303 [Richard Levitte <levitte@stacken.kth.se>]
10305 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
10306 from `int' to `unsigned int' because it's a length and initialized by
10307 EVP_DigestFinal() which expects an `unsigned int *'.
10308 [Richard Levitte <levitte@stacken.kth.se>]
10310 *) Don't hard-code path to Perl interpreter on shebang line of Configure
10311 script. Instead use the usual Shell->Perl transition trick.
10312 [Ralf S. Engelschall]
10314 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
10315 (in addition to RSA certificates) to match the behaviour of `openssl dsa
10316 -noout -modulus' as it's already the case for `openssl rsa -noout
10317 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
10318 currently the public key is printed (a decision which was already done by
10319 `openssl dsa -modulus' in the past) which serves a similar purpose.
10320 Additionally the NO_RSA no longer completely removes the whole -modulus
10321 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
10323 [Ralf S. Engelschall]
10325 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
10326 BIO. See the source (crypto/evp/bio_ok.c) for more info.
10327 [Arne Ansper <arne@ats.cyber.ee>]
10329 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
10330 to be added. Now both 'req' and 'ca' can use new objects defined in the
10334 *) Add cool BIO that does syslog (or event log on NT).
10335 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
10337 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
10338 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
10339 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
10340 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
10343 *) Add preliminary config info for new extension code.
10346 *) Make RSA_NO_PADDING really use no padding.
10347 [Ulf Moeller <ulf@fitug.de>]
10349 *) Generate errors when private/public key check is done.
10352 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
10353 for some CRL extensions and new objects added.
10356 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
10357 key usage extension and fuller support for authority key id.
10360 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
10361 padding method for RSA, which is recommended for new applications in PKCS
10362 #1 v2.0 (RFC 2437, October 1998).
10363 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
10364 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
10365 against Bleichbacher's attack on RSA.
10366 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
10369 *) Updates to the new SSL compression code
10370 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10372 *) Fix so that the version number in the master secret, when passed
10373 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
10374 (because the server will not accept higher), that the version number
10375 is 0x03,0x01, not 0x03,0x00
10376 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10378 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
10379 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
10380 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
10383 *) Support for RAW extensions where an arbitrary extension can be
10384 created by including its DER encoding. See apps/openssl.cnf for
10388 *) Make sure latest Perl versions don't interpret some generated C array
10389 code as Perl array code in the crypto/err/err_genc.pl script.
10390 [Lars Weber <3weber@informatik.uni-hamburg.de>]
10392 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
10393 not many people have the assembler. Various Win32 compilation fixes and
10394 update to the INSTALL.W32 file with (hopefully) more accurate Win32
10395 build instructions.
10398 *) Modify configure script 'Configure' to automatically create crypto/date.h
10399 file under Win32 and also build pem.h from pem.org. New script
10400 util/mkfiles.pl to create the MINFO file on environments that can't do a
10401 'make files': perl util/mkfiles.pl >MINFO should work.
10404 *) Major rework of DES function declarations, in the pursuit of correctness
10405 and purity. As a result, many evil casts evaporated, and some weirdness,
10406 too. You may find this causes warnings in your code. Zapping your evil
10407 casts will probably fix them. Mostly.
10410 *) Fix for a typo in asn1.h. Bug fix to object creation script
10411 obj_dat.pl. It considered a zero in an object definition to mean
10412 "end of object": none of the objects in objects.h have any zeros
10413 so it wasn't spotted.
10414 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
10416 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
10417 Masking (CBCM). In the absence of test vectors, the best I have been able
10418 to do is check that the decrypt undoes the encrypt, so far. Send me test
10419 vectors if you have them.
10422 *) Correct calculation of key length for export ciphers (too much space was
10423 allocated for null ciphers). This has not been tested!
10426 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
10427 message is now correct (it understands "crypto" and "ssl" on its
10428 command line). There is also now an "update" option. This will update
10429 the util/ssleay.num and util/libeay.num files with any new functions.
10431 perl util/mkdef.pl crypto ssl update
10432 it will update them.
10435 *) Overhauled the Perl interface (perl/*):
10436 - ported BN stuff to OpenSSL's different BN library
10437 - made the perl/ source tree CVS-aware
10438 - renamed the package from SSLeay to OpenSSL (the files still contain
10439 their history because I've copied them in the repository)
10440 - removed obsolete files (the test scripts will be replaced
10441 by better Test::Harness variants in the future)
10442 [Ralf S. Engelschall]
10444 *) First cut for a very conservative source tree cleanup:
10445 1. merge various obsolete readme texts into doc/ssleay.txt
10446 where we collect the old documents and readme texts.
10447 2. remove the first part of files where I'm already sure that we no
10448 longer need them because of three reasons: either they are just temporary
10449 files which were left by Eric or they are preserved original files where
10450 I've verified that the diff is also available in the CVS via "cvs diff
10451 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
10452 the crypto/md/ stuff).
10453 [Ralf S. Engelschall]
10455 *) More extension code. Incomplete support for subject and issuer alt
10456 name, issuer and authority key id. Change the i2v function parameters
10457 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
10458 what that's for :-) Fix to ASN1 macro which messed up
10459 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
10462 *) Preliminary support for ENUMERATED type. This is largely copied from the
10466 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
10467 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10469 *) Make sure `make rehash' target really finds the `openssl' program.
10470 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10472 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
10473 like to hear about it if this slows down other processors.
10476 *) Add CygWin32 platform information to Configure script.
10477 [Alan Batie <batie@aahz.jf.intel.com>]
10479 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
10480 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
10482 *) New program nseq to manipulate netscape certificate sequences
10485 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
10489 *) Fixes to BN code. Previously the default was to define BN_RECURSION
10490 but the BN code had some problems that would cause failures when
10491 doing certificate verification and some other functions.
10492 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10494 *) Add ASN1 and PEM code to support netscape certificate sequences.
10497 *) Add ASN1 and PEM code to support netscape certificate sequences.
10500 *) Add several PKIX and private extended key usage OIDs.
10503 *) Modify the 'ca' program to handle the new extension code. Modify
10504 openssl.cnf for new extension format, add comments.
10507 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
10508 and add a sample to openssl.cnf so req -x509 now adds appropriate
10512 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
10513 error code, add initial support to X509_print() and x509 application.
10516 *) Takes a deep breath and start adding X509 V3 extension support code. Add
10517 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
10518 stuff is currently isolated and isn't even compiled yet.
10521 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
10522 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
10523 Removed the versions check from X509 routines when loading extensions:
10524 this allows certain broken certificates that don't set the version
10525 properly to be processed.
10528 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
10529 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
10530 can still be regenerated with "make depend".
10533 *) Spelling mistake in C version of CAST-128.
10534 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
10536 *) Changes to the error generation code. The perl script err-code.pl
10537 now reads in the old error codes and retains the old numbers, only
10538 adding new ones if necessary. It also only changes the .err files if new
10539 codes are added. The makefiles have been modified to only insert errors
10540 when needed (to avoid needlessly modifying header files). This is done
10541 by only inserting errors if the .err file is newer than the auto generated
10542 C file. To rebuild all the error codes from scratch (the old behaviour)
10543 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
10544 or delete all the .err files.
10547 *) CAST-128 was incorrectly implemented for short keys. The C version has
10548 been fixed, but is untested. The assembler versions are also fixed, but
10549 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
10550 to regenerate it if needed.
10551 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
10552 Hagino <itojun@kame.net>]
10554 *) File was opened incorrectly in randfile.c.
10555 [Ulf Möller <ulf@fitug.de>]
10557 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
10558 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
10559 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
10560 al: it's just almost always a UTCTime. Note this patch adds new error
10561 codes so do a "make errors" if there are problems.
10564 *) Correct Linux 1 recognition in config.
10565 [Ulf Möller <ulf@fitug.de>]
10567 *) Remove pointless MD5 hash when using DSA keys in ca.
10568 [Anonymous <nobody@replay.com>]
10570 *) Generate an error if given an empty string as a cert directory. Also
10571 generate an error if handed NULL (previously returned 0 to indicate an
10572 error, but didn't set one).
10573 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
10575 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
10578 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
10579 parameters. This was causing a warning which killed off the Win32 compile.
10582 *) Remove C++ style comments from crypto/bn/bn_local.h.
10583 [Neil Costigan <neil.costigan@celocom.com>]
10585 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
10586 based on a text string, looking up short and long names and finally
10587 "dot" format. The "dot" format stuff didn't work. Added new function
10588 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
10589 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
10590 OID is not part of the table.
10593 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
10594 X509_LOOKUP_by_alias().
10597 *) Sort openssl functions by name.
10600 *) Get the gendsa program working (hopefully) and add it to app list. Remove
10601 encryption from sample DSA keys (in case anyone is interested the password
10605 *) Make _all_ *_free functions accept a NULL pointer.
10606 [Frans Heymans <fheymans@isaserver.be>]
10608 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
10610 [Anonymous <nobody@replay.com>]
10612 *) s_server should send the CAfile as acceptable CAs, not its own cert.
10613 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
10615 *) Don't blow it for numeric -newkey arguments to apps/req.
10616 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
10618 *) Temp key "for export" tests were wrong in s3_srvr.c.
10619 [Anonymous <nobody@replay.com>]
10621 *) Add prototype for temp key callback functions
10622 SSL_CTX_set_tmp_{rsa,dh}_callback().
10625 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
10626 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
10629 *) X509_name_add_entry() freed the wrong thing after an error.
10630 [Arne Ansper <arne@ats.cyber.ee>]
10632 *) rsa_eay.c would attempt to free a NULL context.
10633 [Arne Ansper <arne@ats.cyber.ee>]
10635 *) BIO_s_socket() had a broken should_retry() on Windoze.
10636 [Arne Ansper <arne@ats.cyber.ee>]
10638 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
10639 [Arne Ansper <arne@ats.cyber.ee>]
10641 *) Make sure the already existing X509_STORE->depth variable is initialized
10642 in X509_STORE_new(), but document the fact that this variable is still
10643 unused in the certificate verification process.
10644 [Ralf S. Engelschall]
10646 *) Fix the various library and apps files to free up pkeys obtained from
10647 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
10650 *) Fix reference counting in X509_PUBKEY_get(). This makes
10651 demos/maurice/example2.c work, amongst others, probably.
10652 [Steve Henson and Ben Laurie]
10654 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
10655 `openssl' and second, the shortcut symlinks for the `openssl <command>'
10656 are no longer created. This way we have a single and consistent command
10657 line interface `openssl <command>', similar to `cvs <command>'.
10658 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
10660 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
10661 BIT STRING wrapper always have zero unused bits.
10664 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
10667 *) Make the top-level INSTALL documentation easier to understand.
10670 *) Makefiles updated to exit if an error occurs in a sub-directory
10671 make (including if user presses ^C) [Paul Sutton]
10673 *) Make Montgomery context stuff explicit in RSA data structure.
10676 *) Fix build order of pem and err to allow for generated pem.h.
10679 *) Fix renumbering bug in X509_NAME_delete_entry().
10682 *) Enhanced the err-ins.pl script so it makes the error library number
10683 global and can add a library name. This is needed for external ASN1 and
10684 other error libraries.
10687 *) Fixed sk_insert which never worked properly.
10690 *) Fix ASN1 macros so they can handle indefinite length constructed
10691 EXPLICIT tags. Some non standard certificates use these: they can now
10695 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
10696 into a single doc/ssleay.txt bundle. This way the information is still
10697 preserved but no longer messes up this directory. Now it's new room for
10698 the new set of documentation files.
10699 [Ralf S. Engelschall]
10701 *) SETs were incorrectly DER encoded. This was a major pain, because they
10702 shared code with SEQUENCEs, which aren't coded the same. This means that
10703 almost everything to do with SETs or SEQUENCEs has either changed name or
10704 number of arguments.
10705 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
10707 *) Fix test data to work with the above.
10710 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
10711 was already fixed by Eric for 0.9.1 it seems.
10712 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
10714 *) Autodetect FreeBSD3.
10717 *) Fix various bugs in Configure. This affects the following platforms:
10721 unixware-2.0-pentium
10725 *) Eliminate generated files from CVS. Reorder tests to regenerate files
10726 before they are needed.
10729 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
10733 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
10735 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
10736 changed SSLeay to OpenSSL in version strings.
10737 [Ralf S. Engelschall]
10739 *) Some fixups to the top-level documents.
10742 *) Fixed the nasty bug where rsaref.h was not found under compile-time
10743 because the symlink to include/ was missing.
10744 [Ralf S. Engelschall]
10746 *) Incorporated the popular no-RSA/DSA-only patches
10747 which allow to compile a RSA-free SSLeay.
10748 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
10750 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
10751 when "ssleay" is still not found.
10752 [Ralf S. Engelschall]
10754 *) Added more platforms to Configure: Cray T3E, HPUX 11,
10755 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
10757 *) Updated the README file.
10758 [Ralf S. Engelschall]
10760 *) Added various .cvsignore files in the CVS repository subdirs
10761 to make a "cvs update" really silent.
10762 [Ralf S. Engelschall]
10764 *) Recompiled the error-definition header files and added
10765 missing symbols to the Win32 linker tables.
10766 [Ralf S. Engelschall]
10768 *) Cleaned up the top-level documents;
10769 o new files: CHANGES and LICENSE
10770 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
10771 o merged COPYRIGHT into LICENSE
10772 o removed obsolete TODO file
10773 o renamed MICROSOFT to INSTALL.W32
10774 [Ralf S. Engelschall]
10776 *) Removed dummy files from the 0.9.1b source tree:
10777 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
10778 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
10779 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
10780 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
10781 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
10782 [Ralf S. Engelschall]
10784 *) Added various platform portability fixes.
10787 *) The Genesis of the OpenSSL rpject:
10788 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
10789 Young and Tim J. Hudson created while they were working for C2Net until
10791 [The OpenSSL Project]
10794 Changes between 0.9.0b and 0.9.1b [not released]
10796 *) Updated a few CA certificates under certs/
10799 *) Changed some BIGNUM api stuff.
10802 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
10803 DGUX x86, Linux Alpha, etc.
10806 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
10807 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
10811 *) Add -strparse option to asn1pars program which parses nested
10813 [Dr Stephen Henson <shenson@bigfoot.com>]
10815 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
10818 *) DSA fix for "ca" program.
10821 *) Added "-genkey" option to "dsaparam" program.
10824 *) Added RIPE MD160 (rmd160) message digest.
10827 *) Added -a (all) option to "ssleay version" command.
10830 *) Added PLATFORM define which is the id given to Configure.
10833 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
10836 *) Extended the ASN.1 parser routines.
10839 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
10842 *) Added a BN_CTX to the BN library.
10845 *) Fixed the weak key values in DES library
10848 *) Changed API in EVP library for cipher aliases.
10851 *) Added support for RC2/64bit cipher.
10854 *) Converted the lhash library to the crypto/mem.c functions.
10857 *) Added more recognized ASN.1 object ids.
10860 *) Added more RSA padding checks for SSL/TLS.
10863 *) Added BIO proxy/filter functionality.
10866 *) Added extra_certs to SSL_CTX which can be used
10867 send extra CA certificates to the client in the CA cert chain sending
10868 process. It can be configured with SSL_CTX_add_extra_chain_cert().
10871 *) Now Fortezza is denied in the authentication phase because
10872 this is key exchange mechanism is not supported by SSLeay at all.
10875 *) Additional PKCS1 checks.
10878 *) Support the string "TLSv1" for all TLS v1 ciphers.
10881 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
10882 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
10885 *) Fixed a few memory leaks.
10888 *) Fixed various code and comment typos.
10891 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
10892 bytes sent in the client random.
10893 [Edward Bishop <ebishop@spyglass.com>]
projects / openssl.git / blob