5 Changes between 1.0.2 and 1.1.0 [xx XXX xxxx]
7 *) Version negotiation has been rewritten. In particular SSLv23_method(),
8 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
9 and turned into macros which simply call the new preferred function names
10 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
11 should use the new names instead. Also as part of this change the ssl23.h
12 header file has been removed.
15 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
16 code and the associated standard is no longer considered fit-for-purpose.
19 *) Added HTTP GET support to the ocsp command.
22 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
25 *) Added support for TLS extended master secret from
26 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
27 initial patch which was a great help during development.
30 *) All libssl internal structures have been removed from the public header
31 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
32 now redundant). Users should not attempt to access internal structures
33 directly. Instead they should use the provided API functions.
36 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
37 Access to deprecated functions can be re-enabled by running config with
38 "enable-deprecated". In addition applications wishing to use deprecated
39 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
40 will, by default, disable some transitive includes that previously existed
41 in the header files (e.g. ec.h will no longer, by default, include bn.h)
44 *) Added support for OCB mode. OpenSSL has been granted a patent license
45 compatible with the OpenSSL license for use of OCB. Details are available
46 at https://www.openssl.org/docs/misc/OCB-patent-grant-OpenSSL.pdf. Support
47 for OCB can be removed by calling config with no-ocb.
50 *) SSLv2 support has been removed. It still supports receiving a SSLv2
51 compatible client hello.
54 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
55 done while fixing the error code for the key-too-small case.
56 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
58 *) CA.sh has been removmed; use CA.pl instead.
61 *) Removed old DES API.
64 *) Remove various unsupported platforms:
70 Sinix/ReliantUNIX RM400
75 16-bit platforms such as WIN16
78 *) Clean up OPENSSL_NO_xxx #define's
79 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
80 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
81 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
82 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
83 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
84 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
85 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
86 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
87 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
88 Remove MS_STATIC; it's a relic from platforms <32 bits.
91 *) Cleaned up dead code
92 Remove all but one '#ifdef undef' which is to be looked at.
95 *) Clean up calling of xxx_free routines.
96 Just like free(), fix most of the xxx_free routines to accept
97 NULL. Remove the non-null checks from callers. Save much code.
100 *) Experimental support for a new, fast, unbiased prime candidate generator,
101 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
102 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
104 *) New output format NSS in the sess_id command line tool. This allows
105 exporting the session id and the master key in NSS keylog format.
106 [Martin Kaiser <martin@kaiser.cx>]
108 *) Harmonize version and its documentation. -f flag is used to display
110 [mancha <mancha1@zoho.com>]
112 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
114 [mancha <mancha1@zoho.com>]
116 *) Fix some double frees. These are not thought to be exploitable.
117 [mancha <mancha1@zoho.com>]
119 *) A missing bounds check in the handling of the TLS heartbeat extension
120 can be used to reveal up to 64k of memory to a connected client or
123 Thanks for Neel Mehta of Google Security for discovering this bug and to
124 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
125 preparing the fix (CVE-2014-0160)
126 [Adam Langley, Bodo Moeller]
128 *) Fix for the attack described in the paper "Recovering OpenSSL
129 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
130 by Yuval Yarom and Naomi Benger. Details can be obtained from:
131 http://eprint.iacr.org/2014/140
133 Thanks to Yuval Yarom and Naomi Benger for discovering this
134 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
135 [Yuval Yarom and Naomi Benger]
137 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
138 this fixes a limitation in previous versions of OpenSSL.
141 *) Experimental encrypt-then-mac support.
143 Experimental support for encrypt then mac from
144 draft-gutmann-tls-encrypt-then-mac-02.txt
146 To enable it set the appropriate extension number (0x42 for the test
147 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
149 For non-compliant peers (i.e. just about everything) this should have no
152 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
156 *) Add EVP support for key wrapping algorithms, to avoid problems with
157 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
158 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
159 algorithms and include tests cases.
162 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
166 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
167 MGF1 digest and OAEP label.
170 *) Make openssl verify return errors.
171 [Chris Palmer <palmer@google.com> and Ben Laurie]
173 *) New function ASN1_TIME_diff to calculate the difference between two
174 ASN1_TIME structures or one structure and the current time.
177 *) Update fips_test_suite to support multiple command line options. New
178 test to induce all self test errors in sequence and check expected
182 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
183 sign or verify all in one operation.
186 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
187 test programs and fips_test_suite. Includes functionality to parse
188 the minimal script output of fipsalgest.pl directly.
191 *) Add authorisation parameter to FIPS_module_mode_set().
194 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
197 *) Use separate DRBG fields for internal and external flags. New function
198 FIPS_drbg_health_check() to perform on demand health checking. Add
199 generation tests to fips_test_suite with reduced health check interval to
200 demonstrate periodic health checking. Add "nodh" option to
201 fips_test_suite to skip very slow DH test.
204 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
208 *) More extensive health check for DRBG checking many more failure modes.
209 New function FIPS_selftest_drbg_all() to handle every possible DRBG
210 combination: call this in fips_test_suite.
213 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
214 and POST to handle Dual EC cases.
217 *) Add support for canonical generation of DSA parameter 'g'. See
220 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
221 POST to handle HMAC cases.
224 *) Add functions FIPS_module_version() and FIPS_module_version_text()
225 to return numerical and string versions of the FIPS module number.
228 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
229 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
230 outside the validated module in the FIPS capable OpenSSL.
233 *) Minor change to DRBG entropy callback semantics. In some cases
234 there is no multiple of the block length between min_len and
235 max_len. Allow the callback to return more than max_len bytes
236 of entropy but discard any extra: it is the callback's responsibility
237 to ensure that the extra data discarded does not impact the
238 requested amount of entropy.
241 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
242 information in FIPS186-3, SP800-57 and SP800-131A.
245 *) CCM support via EVP. Interface is very similar to GCM case except we
246 must supply all data in one chunk (i.e. no update, final) and the
247 message length must be supplied if AAD is used. Add algorithm test
251 *) Initial version of POST overhaul. Add POST callback to allow the status
252 of POST to be monitored and/or failures induced. Modify fips_test_suite
253 to use callback. Always run all selftests even if one fails.
256 *) XTS support including algorithm test driver in the fips_gcmtest program.
257 Note: this does increase the maximum key length from 32 to 64 bytes but
258 there should be no binary compatibility issues as existing applications
259 will never use XTS mode.
262 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
263 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
264 performs algorithm blocking for unapproved PRNG types. Also do not
265 set PRNG type in FIPS_mode_set(): leave this to the application.
266 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
267 the standard OpenSSL PRNG: set additional data to a date time vector.
270 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
271 This shouldn't present any incompatibility problems because applications
272 shouldn't be using these directly and any that are will need to rethink
273 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
276 *) Extensive self tests and health checking required by SP800-90 DRBG.
277 Remove strength parameter from FIPS_drbg_instantiate and always
278 instantiate at maximum supported strength.
281 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
284 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
287 *) New function DH_compute_key_padded() to compute a DH key and pad with
288 leading zeroes if needed: this complies with SP800-56A et al.
291 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
292 anything, incomplete, subject to change and largely untested at present.
295 *) Modify fipscanisteronly build option to only build the necessary object
296 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
299 *) Add experimental option FIPSSYMS to give all symbols in
300 fipscanister.o and FIPS or fips prefix. This will avoid
301 conflicts with future versions of OpenSSL. Add perl script
302 util/fipsas.pl to preprocess assembly language source files
303 and rename any affected symbols.
306 *) Add selftest checks and algorithm block of non-fips algorithms in
307 FIPS mode. Remove DES2 from selftests.
310 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
311 return internal method without any ENGINE dependencies. Add new
312 tiny fips sign and verify functions.
315 *) New build option no-ec2m to disable characteristic 2 code.
318 *) New build option "fipscanisteronly". This only builds fipscanister.o
319 and (currently) associated fips utilities. Uses the file Makefile.fips
320 instead of Makefile.org as the prototype.
323 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
324 Update fips_gcmtest to use IV generator.
327 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
328 setting output buffer to NULL. The *Final function must be
329 called although it will not retrieve any additional data. The tag
330 can be set or retrieved with a ctrl. The IV length is by default 12
331 bytes (96 bits) but can be set to an alternative value. If the IV
332 length exceeds the maximum IV length (currently 16 bytes) it cannot be
336 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
337 underlying do_cipher function handles all cipher semantics itself
338 including padding and finalisation. This is useful if (for example)
339 an ENGINE cipher handles block padding itself. The behaviour of
340 do_cipher is subtly changed if this flag is set: the return value
341 is the number of characters written to the output buffer (zero is
342 no longer an error code) or a negative error code. Also if the
343 input buffer is NULL and length 0 finalisation should be performed.
346 *) If a candidate issuer certificate is already part of the constructed
347 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
350 *) Improve forward-security support: add functions
352 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
353 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
355 for use by SSL/TLS servers; the callback function will be called whenever a
356 new session is created, and gets to decide whether the session may be
357 cached to make it resumable (return 0) or not (return 1). (As by the
358 SSL/TLS protocol specifications, the session_id sent by the server will be
359 empty to indicate that the session is not resumable; also, the server will
360 not generate RFC 4507 (RFC 5077) session tickets.)
362 A simple reasonable callback implementation is to return is_forward_secure.
363 This parameter will be set to 1 or 0 depending on the ciphersuite selected
364 by the SSL/TLS server library, indicating whether it can provide forward
366 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
368 *) New -verify_name option in command line utilities to set verification
372 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
373 Add CMAC pkey methods.
376 *) Experimental renegotiation in s_server -www mode. If the client
377 browses /reneg connection is renegotiated. If /renegcert it is
378 renegotiated requesting a certificate.
381 *) Add an "external" session cache for debugging purposes to s_server. This
382 should help trace issues which normally are only apparent in deployed
383 multi-process servers.
386 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
387 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
388 BIO_set_cipher() and some obscure PEM functions were changed so they
389 can now return an error. The RAND changes required a change to the
390 RAND_METHOD structure.
393 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
394 a gcc attribute to warn if the result of a function is ignored. This
395 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
396 whose return value is often ignored.
399 Changes between 1.0.2 and 1.0.2a [xx XXX xxxx]
401 *) ClientHello sigalgs DoS fix
403 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
404 invalid signature algorithms extension a NULL pointer dereference will
405 occur. This can be exploited in a DoS attack against the server.
407 This issue was was reported to OpenSSL by David Ramos of Stanford
410 [Stephen Henson and Matt Caswell]
412 *) Multiblock corrupted pointer fix
414 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
415 feature only applies on 64 bit x86 architecture platforms that support AES
416 NI instructions. A defect in the implementation of "multiblock" can cause
417 OpenSSL's internal write buffer to become incorrectly set to NULL when
418 using non-blocking IO. Typically, when the user application is using a
419 socket BIO for writing, this will only result in a failed connection.
420 However if some other BIO is used then it is likely that a segmentation
421 fault will be triggered, thus enabling a potential DoS attack.
423 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
427 *) Segmentation fault in DTLSv1_listen fix
429 The DTLSv1_listen function is intended to be stateless and processes the
430 initial ClientHello from many peers. It is common for user code to loop
431 over the call to DTLSv1_listen until a valid ClientHello is received with
432 an associated cookie. A defect in the implementation of DTLSv1_listen means
433 that state is preserved in the SSL object from one invocation to the next
434 that can lead to a segmentation fault. Errors processing the initial
435 ClientHello can trigger this scenario. An example of such an error could be
436 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
439 This issue was reported to OpenSSL by Per Allansson.
443 *) Segmentation fault in ASN1_TYPE_cmp fix
445 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
446 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
447 certificate signature algorithm consistency this can be used to crash any
448 certificate verification operation and exploited in a DoS attack. Any
449 application which performs certificate verification is vulnerable including
450 OpenSSL clients and servers which enable client authentication.
454 *) Segmentation fault for invalid PSS parameters fix
456 The signature verification routines will crash with a NULL pointer
457 dereference if presented with an ASN.1 signature using the RSA PSS
458 algorithm and invalid parameters. Since these routines are used to verify
459 certificate signature algorithms this can be used to crash any
460 certificate verification operation and exploited in a DoS attack. Any
461 application which performs certificate verification is vulnerable including
462 OpenSSL clients and servers which enable client authentication.
464 This issue was was reported to OpenSSL by Brian Carpenter.
468 *) ASN.1 structure reuse memory corruption fix
470 Reusing a structure in ASN.1 parsing may allow an attacker to cause
471 memory corruption via an invalid write. Such reuse is and has been
472 strongly discouraged and is believed to be rare.
474 Applications that parse structures containing CHOICE or ANY DEFINED BY
475 components may be affected. Certificate parsing (d2i_X509 and related
476 functions) are however not affected. OpenSSL clients and servers are
481 *) PKCS7 NULL pointer dereferences fix
483 The PKCS#7 parsing code does not handle missing outer ContentInfo
484 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
485 missing content and trigger a NULL pointer dereference on parsing.
487 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
488 otherwise parse PKCS#7 structures from untrusted sources are
489 affected. OpenSSL clients and servers are not affected.
491 This issue was reported to OpenSSL by Michal Zalewski (Google).
495 *) DoS via reachable assert in SSLv2 servers fix
497 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
498 servers that both support SSLv2 and enable export cipher suites by sending
499 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
501 This issue was discovered by Sean Burford (Google) and Emilia Käsper
502 (OpenSSL development team).
506 *) Empty CKE with client auth and DHE fix
508 If client auth is used then a server can seg fault in the event of a DHE
509 ciphersuite being selected and a zero length ClientKeyExchange message
510 being sent by the client. This could be exploited in a DoS attack.
514 *) Handshake with unseeded PRNG fix
516 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
517 with an unseeded PRNG. The conditions are:
518 - The client is on a platform where the PRNG has not been seeded
519 automatically, and the user has not seeded manually
520 - A protocol specific client method version has been used (i.e. not
521 SSL_client_methodv23)
522 - A ciphersuite is used that does not require additional random data from
523 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
525 If the handshake succeeds then the client random that has been used will
526 have been generated from a PRNG with insufficient entropy and therefore the
527 output may be predictable.
529 For example using the following command with an unseeded openssl will
530 succeed on an unpatched platform:
532 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
536 *) Use After Free following d2i_ECPrivatekey error fix
538 A malformed EC private key file consumed via the d2i_ECPrivateKey function
539 could cause a use after free condition. This, in turn, could cause a double
540 free in several private key parsing functions (such as d2i_PrivateKey
541 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
542 for applications that receive EC private keys from untrusted
543 sources. This scenario is considered rare.
545 This issue was discovered by the BoringSSL project and fixed in their
550 *) X509_to_X509_REQ NULL pointer deref fix
552 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
553 the certificate key is invalid. This function is rarely used in practice.
555 This issue was discovered by Brian Carpenter.
559 *) Removed the export ciphers from the DEFAULT ciphers
562 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
564 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
565 ARMv5 through ARMv8, as opposite to "locking" it to single one.
566 So far those who have to target multiple plaforms would compromise
567 and argue that binary targeting say ARMv5 would still execute on
568 ARMv8. "Universal" build resolves this compromise by providing
569 near-optimal performance even on newer platforms.
572 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
573 (other platforms pending).
574 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
576 *) Add support for the SignedCertificateTimestampList certificate and
577 OCSP response extensions from RFC6962.
580 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
581 for corner cases. (Certain input points at infinity could lead to
582 bogus results, with non-infinity inputs mapped to infinity too.)
585 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
586 This covers AES, SHA256/512 and GHASH. "Initial" means that most
587 common cases are optimized and there still is room for further
588 improvements. Vector Permutation AES for Altivec is also added.
591 *) Add support for little-endian ppc64 Linux target.
592 [Marcelo Cerri (IBM)]
594 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
595 SHA1, SHA256 and GHASH. "Initial" means that most common cases
596 are optimized and there still is room for further improvements.
597 Both 32- and 64-bit modes are supported.
598 [Andy Polyakov, Ard Biesheuvel (Linaro)]
600 *) Improved ARMv7 NEON support.
603 *) Support for SPARC Architecture 2011 crypto extensions, first
604 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
605 SHA256/512, MD5, GHASH and modular exponentiation.
606 [Andy Polyakov, David Miller]
608 *) Accelerated modular exponentiation for Intel processors, a.k.a.
610 [Shay Gueron & Vlad Krasnov (Intel Corp)]
612 *) Support for new and upcoming Intel processors, including AVX2,
613 BMI and SHA ISA extensions. This includes additional "stitched"
614 implementations, AESNI-SHA256 and GCM, and multi-buffer support
617 This work was sponsored by Intel Corp.
620 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
621 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
622 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
625 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
626 this fixes a limiation in previous versions of OpenSSL.
629 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
630 MGF1 digest and OAEP label.
633 *) Add EVP support for key wrapping algorithms, to avoid problems with
634 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
635 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
636 algorithms and include tests cases.
639 *) Add functions to allocate and set the fields of an ECDSA_METHOD
641 [Douglas E. Engert, Steve Henson]
643 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
644 difference in days and seconds between two tm or ASN1_TIME structures.
647 *) Add -rev test option to s_server to just reverse order of characters
648 received by client and send back to server. Also prints an abbreviated
649 summary of the connection parameters.
652 *) New option -brief for s_client and s_server to print out a brief summary
653 of connection parameters.
656 *) Add callbacks for arbitrary TLS extensions.
657 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
659 *) New option -crl_download in several openssl utilities to download CRLs
660 from CRLDP extension in certificates.
663 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
666 *) New function X509_CRL_diff to generate a delta CRL from the difference
667 of two full CRLs. Add support to "crl" utility.
670 *) New functions to set lookup_crls function and to retrieve
671 X509_STORE from X509_STORE_CTX.
674 *) Print out deprecated issuer and subject unique ID fields in
678 *) Extend OCSP I/O functions so they can be used for simple general purpose
679 HTTP as well as OCSP. New wrapper function which can be used to download
680 CRLs using the OCSP API.
683 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
686 *) SSL_CONF* functions. These provide a common framework for application
687 configuration using configuration files or command lines.
690 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
691 message callback and prints the results. Needs compile time option
692 "enable-ssl-trace". New options to s_client and s_server to enable
696 *) New ctrl and macro to retrieve supported points extensions.
697 Print out extension in s_server and s_client.
700 *) New functions to retrieve certificate signature and signature
704 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
708 *) New Suite B modes for TLS code. These use and enforce the requirements
709 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
710 only use Suite B curves. The Suite B modes can be set by using the
711 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
714 *) New chain verification flags for Suite B levels of security. Check
715 algorithms are acceptable when flags are set in X509_verify_cert.
718 *) Make tls1_check_chain return a set of flags indicating checks passed
719 by a certificate chain. Add additional tests to handle client
720 certificates: checks for matching certificate type and issuer name
724 *) If an attempt is made to use a signature algorithm not in the peer
725 preference list abort the handshake. If client has no suitable
726 signature algorithms in response to a certificate request do not
730 *) If server EC tmp key is not in client preference list abort handshake.
733 *) Add support for certificate stores in CERT structure. This makes it
734 possible to have different stores per SSL structure or one store in
735 the parent SSL_CTX. Include distint stores for certificate chain
736 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
737 to build and store a certificate chain in CERT structure: returing
738 an error if the chain cannot be built: this will allow applications
739 to test if a chain is correctly configured.
741 Note: if the CERT based stores are not set then the parent SSL_CTX
742 store is used to retain compatibility with existing behaviour.
746 *) New function ssl_set_client_disabled to set a ciphersuite disabled
747 mask based on the current session, check mask when sending client
748 hello and checking the requested ciphersuite.
751 *) New ctrls to retrieve and set certificate types in a certificate
752 request message. Print out received values in s_client. If certificate
753 types is not set with custom values set sensible values based on
754 supported signature algorithms.
757 *) Support for distinct client and server supported signature algorithms.
760 *) Add certificate callback. If set this is called whenever a certificate
761 is required by client or server. An application can decide which
762 certificate chain to present based on arbitrary criteria: for example
763 supported signature algorithms. Add very simple example to s_server.
764 This fixes many of the problems and restrictions of the existing client
765 certificate callback: for example you can now clear an existing
766 certificate and specify the whole chain.
769 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
770 the certificate can be used for (if anything). Set valid_flags field
771 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
772 to have similar checks in it.
774 Add new "cert_flags" field to CERT structure and include a "strict mode".
775 This enforces some TLS certificate requirements (such as only permitting
776 certificate signature algorithms contained in the supported algorithms
777 extension) which some implementations ignore: this option should be used
778 with caution as it could cause interoperability issues.
781 *) Update and tidy signature algorithm extension processing. Work out
782 shared signature algorithms based on preferences and peer algorithms
783 and print them out in s_client and s_server. Abort handshake if no
784 shared signature algorithms.
787 *) Add new functions to allow customised supported signature algorithms
788 for SSL and SSL_CTX structures. Add options to s_client and s_server
792 *) New function SSL_certs_clear() to delete all references to certificates
793 from an SSL structure. Before this once a certificate had been added
794 it couldn't be removed.
797 *) Integrate hostname, email address and IP address checking with certificate
798 verification. New verify options supporting checking in opensl utility.
801 *) Fixes and wildcard matching support to hostname and email checking
802 functions. Add manual page.
803 [Florian Weimer (Red Hat Product Security Team)]
805 *) New functions to check a hostname email or IP address against a
806 certificate. Add options x509 utility to print results of checks against
810 *) Fix OCSP checking.
811 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
813 *) Initial experimental support for explicitly trusted non-root CAs.
814 OpenSSL still tries to build a complete chain to a root but if an
815 intermediate CA has a trust setting included that is used. The first
816 setting is used: whether to trust (e.g., -addtrust option to the x509
820 *) Add -trusted_first option which attempts to find certificates in the
821 trusted store even if an untrusted chain is also supplied.
824 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
825 platform support for Linux and Android.
828 *) Support for linux-x32, ILP32 environment in x86_64 framework.
831 *) Experimental multi-implementation support for FIPS capable OpenSSL.
832 When in FIPS mode the approved implementations are used as normal,
833 when not in FIPS mode the internal unapproved versions are used instead.
834 This means that the FIPS capable OpenSSL isn't forced to use the
835 (often lower performance) FIPS implementations outside FIPS mode.
838 *) Transparently support X9.42 DH parameters when calling
839 PEM_read_bio_DHparameters. This means existing applications can handle
840 the new parameter format automatically.
843 *) Initial experimental support for X9.42 DH parameter format: mainly
844 to support use of 'q' parameter for RFC5114 parameters.
847 *) Add DH parameters from RFC5114 including test data to dhtest.
850 *) Support for automatic EC temporary key parameter selection. If enabled
851 the most preferred EC parameters are automatically used instead of
852 hardcoded fixed parameters. Now a server just has to call:
853 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
854 support ECDH and use the most appropriate parameters.
857 *) Enhance and tidy EC curve and point format TLS extension code. Use
858 static structures instead of allocation if default values are used.
859 New ctrls to set curves we wish to support and to retrieve shared curves.
860 Print out shared curves in s_server. New options to s_server and s_client
861 to set list of supported curves.
864 *) New ctrls to retrieve supported signature algorithms and
865 supported curve values as an array of NIDs. Extend openssl utility
866 to print out received values.
869 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
870 between NIDs and the more common NIST names such as "P-256". Enhance
871 ecparam utility and ECC method to recognise the NIST names for curves.
874 *) Enhance SSL/TLS certificate chain handling to support different
875 chains for each certificate instead of one chain in the parent SSL_CTX.
878 *) Support for fixed DH ciphersuite client authentication: where both
879 server and client use DH certificates with common parameters.
882 *) Support for fixed DH ciphersuites: those requiring DH server
886 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
888 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
889 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
890 X509_CINF_get_signature were reverted post internal team review.
892 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
894 *) Build fixes for the Windows and OpenVMS platforms
895 [Matt Caswell and Richard Levitte]
897 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
899 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
900 message can cause a segmentation fault in OpenSSL due to a NULL pointer
901 dereference. This could lead to a Denial Of Service attack. Thanks to
902 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
906 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
907 dtls1_buffer_record function under certain conditions. In particular this
908 could occur if an attacker sent repeated DTLS records with the same
909 sequence number but for the next epoch. The memory leak could be exploited
910 by an attacker in a Denial of Service attack through memory exhaustion.
911 Thanks to Chris Mueller for reporting this issue.
915 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
916 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
917 method would be set to NULL which could later result in a NULL pointer
918 dereference. Thanks to Frank Schmirler for reporting this issue.
922 *) Abort handshake if server key exchange message is omitted for ephemeral
925 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
926 reporting this issue.
930 *) Remove non-export ephemeral RSA code on client and server. This code
931 violated the TLS standard by allowing the use of temporary RSA keys in
932 non-export ciphersuites and could be used by a server to effectively
933 downgrade the RSA key length used to a value smaller than the server
934 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
935 INRIA or reporting this issue.
939 *) Fixed issue where DH client certificates are accepted without verification.
940 An OpenSSL server will accept a DH certificate for client authentication
941 without the certificate verify message. This effectively allows a client to
942 authenticate without the use of a private key. This only affects servers
943 which trust a client certificate authority which issues certificates
944 containing DH keys: these are extremely rare and hardly ever encountered.
945 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
950 *) Ensure that the session ID context of an SSL is updated when its
951 SSL_CTX is updated via SSL_set_SSL_CTX.
953 The session ID context is typically set from the parent SSL_CTX,
954 and can vary with the CTX.
957 *) Fix various certificate fingerprint issues.
959 By using non-DER or invalid encodings outside the signed portion of a
960 certificate the fingerprint can be changed without breaking the signature.
961 Although no details of the signed portion of the certificate can be changed
962 this can cause problems with some applications: e.g. those using the
963 certificate fingerprint for blacklists.
965 1. Reject signatures with non zero unused bits.
967 If the BIT STRING containing the signature has non zero unused bits reject
968 the signature. All current signature algorithms require zero unused bits.
970 2. Check certificate algorithm consistency.
972 Check the AlgorithmIdentifier inside TBS matches the one in the
973 certificate signature. NB: this will result in signature failure
974 errors for some broken certificates.
976 Thanks to Konrad Kraszewski from Google for reporting this issue.
978 3. Check DSA/ECDSA signatures use DER.
980 Reencode DSA/ECDSA signatures and compare with the original received
981 signature. Return an error if there is a mismatch.
983 This will reject various cases including garbage after signature
984 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
985 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
986 (negative or with leading zeroes).
988 Further analysis was conducted and fixes were developed by Stephen Henson
989 of the OpenSSL core team.
994 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
995 results on some platforms, including x86_64. This bug occurs at random
996 with a very low probability, and is not known to be exploitable in any
997 way, though its exact impact is difficult to determine. Thanks to Pieter
998 Wuille (Blockstream) who reported this issue and also suggested an initial
999 fix. Further analysis was conducted by the OpenSSL development team and
1000 Adam Langley of Google. The final fix was developed by Andy Polyakov of
1001 the OpenSSL core team.
1005 *) Do not resume sessions on the server if the negotiated protocol
1006 version does not match the session's version. Resuming with a different
1007 version, while not strictly forbidden by the RFC, is of questionable
1008 sanity and breaks all known clients.
1009 [David Benjamin, Emilia Käsper]
1011 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
1012 early CCS messages during renegotiation. (Note that because
1013 renegotiation is encrypted, this early CCS was not exploitable.)
1016 *) Tighten client-side session ticket handling during renegotiation:
1017 ensure that the client only accepts a session ticket if the server sends
1018 the extension anew in the ServerHello. Previously, a TLS client would
1019 reuse the old extension state and thus accept a session ticket if one was
1020 announced in the initial ServerHello.
1022 Similarly, ensure that the client requires a session ticket if one
1023 was advertised in the ServerHello. Previously, a TLS client would
1024 ignore a missing NewSessionTicket message.
1027 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
1029 *) SRTP Memory Leak.
1031 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
1032 sends a carefully crafted handshake message, to cause OpenSSL to fail
1033 to free up to 64k of memory causing a memory leak. This could be
1034 exploited in a Denial Of Service attack. This issue affects OpenSSL
1035 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
1036 whether SRTP is used or configured. Implementations of OpenSSL that
1037 have been compiled with OPENSSL_NO_SRTP defined are not affected.
1039 The fix was developed by the OpenSSL team.
1043 *) Session Ticket Memory Leak.
1045 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
1046 integrity of that ticket is first verified. In the event of a session
1047 ticket integrity check failing, OpenSSL will fail to free memory
1048 causing a memory leak. By sending a large number of invalid session
1049 tickets an attacker could exploit this issue in a Denial Of Service
1054 *) Build option no-ssl3 is incomplete.
1056 When OpenSSL is configured with "no-ssl3" as a build option, servers
1057 could accept and complete a SSL 3.0 handshake, and clients could be
1058 configured to send them.
1060 [Akamai and the OpenSSL team]
1062 *) Add support for TLS_FALLBACK_SCSV.
1063 Client applications doing fallback retries should call
1064 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
1066 [Adam Langley, Bodo Moeller]
1068 *) Add additional DigestInfo checks.
1070 Reencode DigestInto in DER and check against the original when
1071 verifying RSA signature: this will reject any improperly encoded
1072 DigestInfo structures.
1074 Note: this is a precautionary measure and no attacks are currently known.
1078 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
1080 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
1081 SRP code can be overrun an internal buffer. Add sanity check that
1082 g, A, B < N to SRP code.
1084 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
1085 Group for discovering this issue.
1089 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
1090 TLS 1.0 instead of higher protocol versions when the ClientHello message
1091 is badly fragmented. This allows a man-in-the-middle attacker to force a
1092 downgrade to TLS 1.0 even if both the server and the client support a
1093 higher protocol version, by modifying the client's TLS records.
1095 Thanks to David Benjamin and Adam Langley (Google) for discovering and
1096 researching this issue.
1100 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
1101 to a denial of service attack. A malicious server can crash the client
1102 with a null pointer dereference (read) by specifying an anonymous (EC)DH
1103 ciphersuite and sending carefully crafted handshake messages.
1105 Thanks to Felix Gröbert (Google) for discovering and researching this
1110 *) By sending carefully crafted DTLS packets an attacker could cause openssl
1111 to leak memory. This can be exploited through a Denial of Service attack.
1112 Thanks to Adam Langley for discovering and researching this issue.
1116 *) An attacker can force openssl to consume large amounts of memory whilst
1117 processing DTLS handshake messages. This can be exploited through a
1118 Denial of Service attack.
1119 Thanks to Adam Langley for discovering and researching this issue.
1123 *) An attacker can force an error condition which causes openssl to crash
1124 whilst processing DTLS packets due to memory being freed twice. This
1125 can be exploited through a Denial of Service attack.
1126 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
1131 *) If a multithreaded client connects to a malicious server using a resumed
1132 session and the server sends an ec point format extension it could write
1133 up to 255 bytes to freed memory.
1135 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
1140 *) A malicious server can crash an OpenSSL client with a null pointer
1141 dereference (read) by specifying an SRP ciphersuite even though it was not
1142 properly negotiated with the client. This can be exploited through a
1143 Denial of Service attack.
1145 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
1146 discovering and researching this issue.
1150 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
1151 X509_name_oneline, X509_name_print_ex et al. to leak some information
1152 from the stack. Applications may be affected if they echo pretty printing
1153 output to the attacker.
1155 Thanks to Ivan Fratric (Google) for discovering this issue.
1157 [Emilia Käsper, and Steve Henson]
1159 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
1160 for corner cases. (Certain input points at infinity could lead to
1161 bogus results, with non-infinity inputs mapped to infinity too.)
1164 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
1166 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
1167 handshake can force the use of weak keying material in OpenSSL
1168 SSL/TLS clients and servers.
1170 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
1171 researching this issue. (CVE-2014-0224)
1172 [KIKUCHI Masashi, Steve Henson]
1174 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
1175 OpenSSL DTLS client the code can be made to recurse eventually crashing
1178 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
1180 [Imre Rad, Steve Henson]
1182 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
1183 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
1184 client or server. This is potentially exploitable to run arbitrary
1185 code on a vulnerable client or server.
1187 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
1188 [Jüri Aedla, Steve Henson]
1190 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
1191 are subject to a denial of service attack.
1193 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
1194 this issue. (CVE-2014-3470)
1195 [Felix Gröbert, Ivan Fratric, Steve Henson]
1197 *) Harmonize version and its documentation. -f flag is used to display
1199 [mancha <mancha1@zoho.com>]
1201 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
1202 in i2d_ECPrivateKey.
1203 [mancha <mancha1@zoho.com>]
1205 *) Fix some double frees. These are not thought to be exploitable.
1206 [mancha <mancha1@zoho.com>]
1208 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
1210 *) A missing bounds check in the handling of the TLS heartbeat extension
1211 can be used to reveal up to 64k of memory to a connected client or
1214 Thanks for Neel Mehta of Google Security for discovering this bug and to
1215 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
1216 preparing the fix (CVE-2014-0160)
1217 [Adam Langley, Bodo Moeller]
1219 *) Fix for the attack described in the paper "Recovering OpenSSL
1220 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
1221 by Yuval Yarom and Naomi Benger. Details can be obtained from:
1222 http://eprint.iacr.org/2014/140
1224 Thanks to Yuval Yarom and Naomi Benger for discovering this
1225 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
1226 [Yuval Yarom and Naomi Benger]
1228 *) TLS pad extension: draft-agl-tls-padding-03
1230 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
1231 TLS client Hello record length value would otherwise be > 255 and
1232 less that 512 pad with a dummy extension containing zeroes so it
1233 is at least 512 bytes long.
1235 [Adam Langley, Steve Henson]
1237 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
1239 *) Fix for TLS record tampering bug. A carefully crafted invalid
1240 handshake could crash OpenSSL with a NULL pointer exception.
1241 Thanks to Anton Johansson for reporting this issues.
1244 *) Keep original DTLS digest and encryption contexts in retransmission
1245 structures so we can use the previous session parameters if they need
1246 to be resent. (CVE-2013-6450)
1249 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
1250 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
1251 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
1252 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
1253 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
1254 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
1255 [Rob Stradling, Adam Langley]
1257 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
1259 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
1260 supporting platforms or when small records were transferred.
1261 [Andy Polyakov, Steve Henson]
1263 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
1265 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
1267 This addresses the flaw in CBC record processing discovered by
1268 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
1269 at: http://www.isg.rhul.ac.uk/tls/
1271 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1272 Security Group at Royal Holloway, University of London
1273 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
1274 Emilia Käsper for the initial patch.
1276 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
1278 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
1279 ciphersuites which can be exploited in a denial of service attack.
1280 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
1281 and detecting this bug and to Wolfgang Ettlinger
1282 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
1286 *) Return an error when checking OCSP signatures when key is NULL.
1287 This fixes a DoS attack. (CVE-2013-0166)
1290 *) Make openssl verify return errors.
1291 [Chris Palmer <palmer@google.com> and Ben Laurie]
1293 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
1294 the right response is stapled. Also change SSL_get_certificate()
1295 so it returns the certificate actually sent.
1296 See http://rt.openssl.org/Ticket/Display.html?id=2836.
1297 [Rob Stradling <rob.stradling@comodo.com>]
1299 *) Fix possible deadlock when decoding public keys.
1302 *) Don't use TLS 1.0 record version number in initial client hello
1306 Changes between 1.0.1b and 1.0.1c [10 May 2012]
1308 *) Sanity check record length before skipping explicit IV in TLS
1309 1.2, 1.1 and DTLS to fix DoS attack.
1311 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1312 fuzzing as a service testing platform.
1316 *) Initialise tkeylen properly when encrypting CMS messages.
1317 Thanks to Solar Designer of Openwall for reporting this issue.
1320 *) In FIPS mode don't try to use composite ciphers as they are not
1324 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
1326 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
1327 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
1328 mean any application compiled against OpenSSL 1.0.0 headers setting
1329 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
1330 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
1331 0x10000000L Any application which was previously compiled against
1332 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
1333 will need to be recompiled as a result. Letting be results in
1334 inability to disable specifically TLS 1.1 and in client context,
1335 in unlike event, limit maximum offered version to TLS 1.0 [see below].
1338 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
1339 disable just protocol X, but all protocols above X *if* there are
1340 protocols *below* X still enabled. In more practical terms it means
1341 that if application wants to disable TLS1.0 in favor of TLS1.1 and
1342 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
1343 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
1347 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
1349 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1350 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1351 in CRYPTO_realloc_clean.
1353 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1354 issue and to Adam Langley <agl@chromium.org> for fixing it.
1356 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1358 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
1361 *) Workarounds for some broken servers that "hang" if a client hello
1362 record length exceeds 255 bytes.
1364 1. Do not use record version number > TLS 1.0 in initial client
1365 hello: some (but not all) hanging servers will now work.
1366 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
1367 the number of ciphers sent in the client hello. This should be
1368 set to an even number, such as 50, for example by passing:
1369 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
1370 Most broken servers should now work.
1371 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
1372 TLS 1.2 client support entirely.
1375 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
1378 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
1380 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
1381 STRING form instead of a DigestInfo.
1384 *) The format used for MDC2 RSA signatures is inconsistent between EVP
1385 and the RSA_sign/RSA_verify functions. This was made more apparent when
1386 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
1387 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
1388 the correct format in RSA_verify so both forms transparently work.
1391 *) Some servers which support TLS 1.0 can choke if we initially indicate
1392 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
1393 encrypted premaster secret. As a workaround use the maximum permitted
1394 client version in client hello, this should keep such servers happy
1395 and still work with previous versions of OpenSSL.
1398 *) Add support for TLS/DTLS heartbeats.
1399 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1401 *) Add support for SCTP.
1402 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1404 *) Improved PRNG seeding for VOS.
1405 [Paul Green <Paul.Green@stratus.com>]
1407 *) Extensive assembler packs updates, most notably:
1409 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
1410 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
1411 - x86_64: bit-sliced AES implementation;
1412 - ARM: NEON support, contemporary platforms optimizations;
1413 - s390x: z196 support;
1414 - *: GHASH and GF(2^m) multiplication implementations;
1418 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
1419 (removal of unnecessary code)
1420 [Peter Sylvester <peter.sylvester@edelweb.fr>]
1422 *) Add TLS key material exporter from RFC 5705.
1425 *) Add DTLS-SRTP negotiation from RFC 5764.
1428 *) Add Next Protocol Negotiation,
1429 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
1430 disabled with a no-npn flag to config or Configure. Code donated
1432 [Adam Langley <agl@google.com> and Ben Laurie]
1434 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
1435 NIST-P256, NIST-P521, with constant-time single point multiplication on
1436 typical inputs. Compiler support for the nonstandard type __uint128_t is
1437 required to use this (present in gcc 4.4 and later, for 64-bit builds).
1438 Code made available under Apache License version 2.0.
1440 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
1441 line to include this in your build of OpenSSL, and run "make depend" (or
1442 "make update"). This enables the following EC_METHODs:
1444 EC_GFp_nistp224_method()
1445 EC_GFp_nistp256_method()
1446 EC_GFp_nistp521_method()
1448 EC_GROUP_new_by_curve_name() will automatically use these (while
1449 EC_GROUP_new_curve_GFp() currently prefers the more flexible
1451 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
1453 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
1454 all platforms. Move ssize_t definition from e_os.h to the public
1455 header file e_os2.h as it now appears in public header file cms.h
1458 *) New -sigopt option to the ca, req and x509 utilities. Additional
1459 signature parameters can be passed using this option and in
1463 *) Add RSA PSS signing function. This will generate and set the
1464 appropriate AlgorithmIdentifiers for PSS based on those in the
1465 corresponding EVP_MD_CTX structure. No application support yet.
1468 *) Support for companion algorithm specific ASN1 signing routines.
1469 New function ASN1_item_sign_ctx() signs a pre-initialised
1470 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
1471 the appropriate parameters.
1474 *) Add new algorithm specific ASN1 verification initialisation function
1475 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
1476 handling will be the same no matter what EVP_PKEY_METHOD is used.
1477 Add a PSS handler to support verification of PSS signatures: checked
1478 against a number of sample certificates.
1481 *) Add signature printing for PSS. Add PSS OIDs.
1482 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
1484 *) Add algorithm specific signature printing. An individual ASN1 method
1485 can now print out signatures instead of the standard hex dump.
1487 More complex signatures (e.g. PSS) can print out more meaningful
1488 information. Include DSA version that prints out the signature
1492 *) Password based recipient info support for CMS library: implementing
1496 *) Split password based encryption into PBES2 and PBKDF2 functions. This
1497 neatly separates the code into cipher and PBE sections and is required
1498 for some algorithms that split PBES2 into separate pieces (such as
1499 password based CMS).
1502 *) Session-handling fixes:
1503 - Fix handling of connections that are resuming with a session ID,
1504 but also support Session Tickets.
1505 - Fix a bug that suppressed issuing of a new ticket if the client
1506 presented a ticket with an expired session.
1507 - Try to set the ticket lifetime hint to something reasonable.
1508 - Make tickets shorter by excluding irrelevant information.
1509 - On the client side, don't ignore renewed tickets.
1510 [Adam Langley, Bodo Moeller (Google)]
1512 *) Fix PSK session representation.
1515 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
1517 This work was sponsored by Intel.
1520 *) Add GCM support to TLS library. Some custom code is needed to split
1521 the IV between the fixed (from PRF) and explicit (from TLS record)
1522 portions. This adds all GCM ciphersuites supported by RFC5288 and
1523 RFC5289. Generalise some AES* cipherstrings to include GCM and
1524 add a special AESGCM string for GCM only.
1527 *) Expand range of ctrls for AES GCM. Permit setting invocation
1528 field on decrypt and retrieval of invocation field only on encrypt.
1531 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
1532 As required by RFC5289 these ciphersuites cannot be used if for
1533 versions of TLS earlier than 1.2.
1536 *) For FIPS capable OpenSSL interpret a NULL default public key method
1537 as unset and return the appropriate default but do *not* set the default.
1538 This means we can return the appropriate method in applications that
1539 switch between FIPS and non-FIPS modes.
1542 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
1543 ENGINE is used then we cannot handle that in the FIPS module so we
1544 keep original code iff non-FIPS operations are allowed.
1547 *) Add -attime option to openssl utilities.
1548 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
1550 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
1553 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
1554 FIPS EC methods unconditionally for now.
1557 *) New build option no-ec2m to disable characteristic 2 code.
1560 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
1561 all cases can be covered as some introduce binary incompatibilities.
1564 *) Redirect RSA operations to FIPS module including keygen,
1565 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
1568 *) Add similar low level API blocking to ciphers.
1571 *) Low level digest APIs are not approved in FIPS mode: any attempt
1572 to use these will cause a fatal error. Applications that *really* want
1573 to use them can use the private_* version instead.
1576 *) Redirect cipher operations to FIPS module for FIPS builds.
1579 *) Redirect digest operations to FIPS module for FIPS builds.
1582 *) Update build system to add "fips" flag which will link in fipscanister.o
1583 for static and shared library builds embedding a signature if needed.
1586 *) Output TLS supported curves in preference order instead of numerical
1587 order. This is currently hardcoded for the highest order curves first.
1588 This should be configurable so applications can judge speed vs strength.
1591 *) Add TLS v1.2 server support for client authentication.
1594 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
1598 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
1599 FIPS modules versions.
1602 *) Add TLS v1.2 client side support for client authentication. Keep cache
1603 of handshake records longer as we don't know the hash algorithm to use
1604 until after the certificate request message is received.
1607 *) Initial TLS v1.2 client support. Add a default signature algorithms
1608 extension including all the algorithms we support. Parse new signature
1609 format in client key exchange. Relax some ECC signing restrictions for
1610 TLS v1.2 as indicated in RFC5246.
1613 *) Add server support for TLS v1.2 signature algorithms extension. Switch
1614 to new signature format when needed using client digest preference.
1615 All server ciphersuites should now work correctly in TLS v1.2. No client
1616 support yet and no support for client certificates.
1619 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
1620 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
1621 ciphersuites. At present only RSA key exchange ciphersuites work with
1622 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
1623 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
1624 and version checking.
1627 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
1628 with this defined it will not be affected by any changes to ssl internal
1629 structures. Add several utility functions to allow openssl application
1630 to work with OPENSSL_NO_SSL_INTERN defined.
1634 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
1636 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
1639 *) Permit abbreviated handshakes when renegotiating using the function
1640 SSL_renegotiate_abbreviated().
1641 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1643 *) Add call to ENGINE_register_all_complete() to
1644 ENGINE_load_builtin_engines(), so some implementations get used
1645 automatically instead of needing explicit application support.
1648 *) Add support for TLS key exporter as described in RFC5705.
1649 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
1651 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
1652 a few changes are required:
1654 Add SSL_OP_NO_TLSv1_1 flag.
1655 Add TLSv1_1 methods.
1656 Update version checking logic to handle version 1.1.
1657 Add explicit IV handling (ported from DTLS code).
1658 Add command line options to s_client/s_server.
1661 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
1663 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
1664 in CMS and PKCS7 code. When RSA decryption fails use a random key for
1665 content decryption and always return the same error. Note: this attack
1666 needs on average 2^20 messages so it only affects automated senders. The
1667 old behaviour can be reenabled in the CMS code by setting the
1668 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
1669 an MMA defence is not necessary.
1670 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
1671 this issue. (CVE-2012-0884)
1674 *) Fix CVE-2011-4619: make sure we really are receiving a
1675 client hello before rejecting multiple SGC restarts. Thanks to
1676 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
1679 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
1681 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1682 Thanks to Antonio Martin, Enterprise Secure Access Research and
1683 Development, Cisco Systems, Inc. for discovering this bug and
1684 preparing a fix. (CVE-2012-0050)
1687 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
1689 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1690 of the Vaudenay padding oracle attack on CBC mode encryption
1691 which enables an efficient plaintext recovery attack against
1692 the OpenSSL implementation of DTLS. Their attack exploits timing
1693 differences arising during decryption processing. A research
1694 paper describing this attack can be found at:
1695 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1696 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1697 Security Group at Royal Holloway, University of London
1698 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1699 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1700 for preparing the fix. (CVE-2011-4108)
1701 [Robin Seggelmann, Michael Tuexen]
1703 *) Clear bytes used for block padding of SSL 3.0 records.
1705 [Adam Langley (Google)]
1707 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1708 Kadianakis <desnacked@gmail.com> for discovering this issue and
1709 Adam Langley for preparing the fix. (CVE-2011-4619)
1710 [Adam Langley (Google)]
1712 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
1713 [Andrey Kulikov <amdeich@gmail.com>]
1715 *) Prevent malformed RFC3779 data triggering an assertion failure.
1716 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1717 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1718 [Rob Austein <sra@hactrn.net>]
1720 *) Improved PRNG seeding for VOS.
1721 [Paul Green <Paul.Green@stratus.com>]
1723 *) Fix ssl_ciph.c set-up race.
1724 [Adam Langley (Google)]
1726 *) Fix spurious failures in ecdsatest.c.
1727 [Emilia Käsper (Google)]
1729 *) Fix the BIO_f_buffer() implementation (which was mixing different
1730 interpretations of the '..._len' fields).
1731 [Adam Langley (Google)]
1733 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1734 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1735 threads won't reuse the same blinding coefficients.
1737 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1738 lock to call BN_BLINDING_invert_ex, and avoids one use of
1739 BN_BLINDING_update for each BN_BLINDING structure (previously,
1740 the last update always remained unused).
1741 [Emilia Käsper (Google)]
1743 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
1744 [Bob Buckholz (Google)]
1746 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
1748 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
1749 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
1750 [Kaspar Brand <ossl@velox.ch>]
1752 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1753 for multi-threaded use of ECDH. (CVE-2011-3210)
1754 [Adam Langley (Google)]
1756 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1759 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
1760 signature public key algorithm by using OID xref utilities instead.
1761 Before this you could only use some ECC ciphersuites with SHA1 only.
1764 *) Add protection against ECDSA timing attacks as mentioned in the paper
1765 by Billy Bob Brumley and Nicola Tuveri, see:
1767 http://eprint.iacr.org/2011/232.pdf
1769 [Billy Bob Brumley and Nicola Tuveri]
1771 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
1773 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1774 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1776 *) Fix bug in string printing code: if *any* escaping is enabled we must
1777 escape the escape character (backslash) or the resulting string is
1781 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
1783 *) Disable code workaround for ancient and obsolete Netscape browsers
1784 and servers: an attacker can use it in a ciphersuite downgrade attack.
1785 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1788 *) Fixed J-PAKE implementation error, originally discovered by
1789 Sebastien Martini, further info and confirmation from Stefan
1790 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1793 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
1795 *) Fix extension code to avoid race conditions which can result in a buffer
1796 overrun vulnerability: resumed sessions must not be modified as they can
1797 be shared by multiple threads. CVE-2010-3864
1800 *) Fix WIN32 build system to correctly link an ENGINE directory into
1804 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
1806 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
1808 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
1810 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
1812 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
1813 context. The operation can be customised via the ctrl mechanism in
1814 case ENGINEs want to include additional functionality.
1817 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
1820 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
1821 output hashes compatible with older versions of OpenSSL.
1822 [Willy Weisz <weisz@vcpc.univie.ac.at>]
1824 *) Fix compression algorithm handling: if resuming a session use the
1825 compression algorithm of the resumed session instead of determining
1826 it from client hello again. Don't allow server to change algorithm.
1829 *) Add load_crls() function to apps tidying load_certs() too. Add option
1830 to verify utility to allow additional CRLs to be included.
1833 *) Update OCSP request code to permit adding custom headers to the request:
1834 some responders need this.
1837 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
1839 [Julia Lawall <julia@diku.dk>]
1841 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
1842 needlessly dereferenced structures, used obsolete functions and
1843 didn't handle all updated verify codes correctly.
1846 *) Disable MD2 in the default configuration.
1849 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
1850 indicate the initial BIO being pushed or popped. This makes it possible
1851 to determine whether the BIO is the one explicitly called or as a result
1852 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
1853 it handles reference counts correctly and doesn't zero out the I/O bio
1854 when it is not being explicitly popped. WARNING: applications which
1855 included workarounds for the old buggy behaviour will need to be modified
1856 or they could free up already freed BIOs.
1859 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
1860 renaming to all platforms (within the 0.9.8 branch, this was
1861 done conditionally on Netware platforms to avoid a name clash).
1862 [Guenter <lists@gknw.net>]
1864 *) Add ECDHE and PSK support to DTLS.
1865 [Michael Tuexen <tuexen@fh-muenster.de>]
1867 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
1871 *) Add "missing" function EVP_MD_flags() (without this the only way to
1872 retrieve a digest flags is by accessing the structure directly. Update
1873 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
1874 or cipher is registered as in the "from" argument. Print out all
1875 registered digests in the dgst usage message instead of manually
1876 attempting to work them out.
1879 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
1880 this allows the use of compression and extensions. Change default cipher
1881 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
1882 by default unless an application cipher string requests it.
1885 *) Alter match criteria in PKCS12_parse(). It used to try to use local
1886 key ids to find matching certificates and keys but some PKCS#12 files
1887 don't follow the (somewhat unwritten) rules and this strategy fails.
1888 Now just gather all certificates together and the first private key
1889 then look for the first certificate that matches the key.
1892 *) Support use of registered digest and cipher names for dgst and cipher
1893 commands instead of having to add each one as a special case. So now
1900 openssl dgst -sha256 foo
1902 and this works for ENGINE based algorithms too.
1906 *) Update Gost ENGINE to support parameter files.
1907 [Victor B. Wagner <vitus@cryptocom.ru>]
1909 *) Support GeneralizedTime in ca utility.
1910 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
1912 *) Enhance the hash format used for certificate directory links. The new
1913 form uses the canonical encoding (meaning equivalent names will work
1914 even if they aren't identical) and uses SHA1 instead of MD5. This form
1915 is incompatible with the older format and as a result c_rehash should
1916 be used to rebuild symbolic links.
1919 *) Make PKCS#8 the default write format for private keys, replacing the
1920 traditional format. This form is standardised, more secure and doesn't
1921 include an implicit MD5 dependency.
1924 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
1925 committed to OpenSSL should pass this lot as a minimum.
1928 *) Add session ticket override functionality for use by EAP-FAST.
1929 [Jouni Malinen <j@w1.fi>]
1931 *) Modify HMAC functions to return a value. Since these can be implemented
1932 in an ENGINE errors can occur.
1935 *) Type-checked OBJ_bsearch_ex.
1938 *) Type-checked OBJ_bsearch. Also some constification necessitated
1939 by type-checking. Still to come: TXT_DB, bsearch(?),
1940 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
1944 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
1945 seconds to a tm structure directly, instead of going through OS
1946 specific date routines. This avoids any issues with OS routines such
1947 as the year 2038 bug. New *_adj() functions for ASN1 time structures
1948 and X509_time_adj_ex() to cover the extended range. The existing
1949 X509_time_adj() is still usable and will no longer have any date issues.
1952 *) Delta CRL support. New use deltas option which will attempt to locate
1953 and search any appropriate delta CRLs available.
1955 This work was sponsored by Google.
1958 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
1959 code and add additional score elements. Validate alternate CRL paths
1960 as part of the CRL checking and indicate a new error "CRL path validation
1961 error" in this case. Applications wanting additional details can use
1962 the verify callback and check the new "parent" field. If this is not
1963 NULL CRL path validation is taking place. Existing applications wont
1964 see this because it requires extended CRL support which is off by
1967 This work was sponsored by Google.
1970 *) Support for freshest CRL extension.
1972 This work was sponsored by Google.
1975 *) Initial indirect CRL support. Currently only supported in the CRLs
1976 passed directly and not via lookup. Process certificate issuer
1977 CRL entry extension and lookup CRL entries by bother issuer name
1978 and serial number. Check and process CRL issuer entry in IDP extension.
1980 This work was sponsored by Google.
1983 *) Add support for distinct certificate and CRL paths. The CRL issuer
1984 certificate is validated separately in this case. Only enabled if
1985 an extended CRL support flag is set: this flag will enable additional
1986 CRL functionality in future.
1988 This work was sponsored by Google.
1991 *) Add support for policy mappings extension.
1993 This work was sponsored by Google.
1996 *) Fixes to pathlength constraint, self issued certificate handling,
1997 policy processing to align with RFC3280 and PKITS tests.
1999 This work was sponsored by Google.
2002 *) Support for name constraints certificate extension. DN, email, DNS
2003 and URI types are currently supported.
2005 This work was sponsored by Google.
2008 *) To cater for systems that provide a pointer-based thread ID rather
2009 than numeric, deprecate the current numeric thread ID mechanism and
2010 replace it with a structure and associated callback type. This
2011 mechanism allows a numeric "hash" to be extracted from a thread ID in
2012 either case, and on platforms where pointers are larger than 'long',
2013 mixing is done to help ensure the numeric 'hash' is usable even if it
2014 can't be guaranteed unique. The default mechanism is to use "&errno"
2015 as a pointer-based thread ID to distinguish between threads.
2017 Applications that want to provide their own thread IDs should now use
2018 CRYPTO_THREADID_set_callback() to register a callback that will call
2019 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
2021 Note that ERR_remove_state() is now deprecated, because it is tied
2022 to the assumption that thread IDs are numeric. ERR_remove_state(0)
2023 to free the current thread's error state should be replaced by
2024 ERR_remove_thread_state(NULL).
2026 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
2027 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
2028 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
2029 application was previously providing a numeric thread callback that
2030 was inappropriate for distinguishing threads, then uniqueness might
2031 have been obtained with &errno that happened immediately in the
2032 intermediate development versions of OpenSSL; this is no longer the
2033 case, the numeric thread callback will now override the automatic use
2035 [Geoff Thorpe, with help from Bodo Moeller]
2037 *) Initial support for different CRL issuing certificates. This covers a
2038 simple case where the self issued certificates in the chain exist and
2039 the real CRL issuer is higher in the existing chain.
2041 This work was sponsored by Google.
2044 *) Removed effectively defunct crypto/store from the build.
2047 *) Revamp of STACK to provide stronger type-checking. Still to come:
2048 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
2049 ASN1_STRING, CONF_VALUE.
2052 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
2053 RAM on SSL connections. This option can save about 34k per idle SSL.
2056 *) Revamp of LHASH to provide stronger type-checking. Still to come:
2057 STACK, TXT_DB, bsearch, qsort.
2060 *) Initial support for Cryptographic Message Syntax (aka CMS) based
2061 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
2062 support for data, signedData, compressedData, digestedData and
2063 encryptedData, envelopedData types included. Scripts to check against
2064 RFC4134 examples draft and interop and consistency checks of many
2065 content types and variants.
2068 *) Add options to enc utility to support use of zlib compression BIO.
2071 *) Extend mk1mf to support importing of options and assembly language
2072 files from Configure script, currently only included in VC-WIN32.
2073 The assembly language rules can now optionally generate the source
2074 files from the associated perl scripts.
2077 *) Implement remaining functionality needed to support GOST ciphersuites.
2078 Interop testing has been performed using CryptoPro implementations.
2079 [Victor B. Wagner <vitus@cryptocom.ru>]
2081 *) s390x assembler pack.
2084 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
2088 *) Implement Opaque PRF Input TLS extension as specified in
2089 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
2090 official specification yet and no extension type assignment by
2091 IANA exists, this extension (for now) will have to be explicitly
2092 enabled when building OpenSSL by providing the extension number
2093 to use. For example, specify an option
2095 -DTLSEXT_TYPE_opaque_prf_input=0x9527
2097 to the "config" or "Configure" script to enable the extension,
2098 assuming extension number 0x9527 (which is a completely arbitrary
2099 and unofficial assignment based on the MD5 hash of the Internet
2100 Draft). Note that by doing so, you potentially lose
2101 interoperability with other TLS implementations since these might
2102 be using the same extension number for other purposes.
2104 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
2105 opaque PRF input value to use in the handshake. This will create
2106 an interal copy of the length-'len' string at 'src', and will
2107 return non-zero for success.
2109 To get more control and flexibility, provide a callback function
2112 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
2113 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
2117 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
2120 Callback function 'cb' will be called in handshakes, and is
2121 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
2122 Argument 'arg' is for application purposes (the value as given to
2123 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
2124 be provided to the callback function). The callback function
2125 has to return non-zero to report success: usually 1 to use opaque
2126 PRF input just if possible, or 2 to enforce use of the opaque PRF
2127 input. In the latter case, the library will abort the handshake
2128 if opaque PRF input is not successfully negotiated.
2130 Arguments 'peerinput' and 'len' given to the callback function
2131 will always be NULL and 0 in the case of a client. A server will
2132 see the client's opaque PRF input through these variables if
2133 available (NULL and 0 otherwise). Note that if the server
2134 provides an opaque PRF input, the length must be the same as the
2135 length of the client's opaque PRF input.
2137 Note that the callback function will only be called when creating
2138 a new session (session resumption can resume whatever was
2139 previously negotiated), and will not be called in SSL 2.0
2140 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
2141 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
2142 for applications that need to enforce opaque PRF input.
2146 *) Update ssl code to support digests other than SHA1+MD5 for handshake
2149 [Victor B. Wagner <vitus@cryptocom.ru>]
2151 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2152 RFC4507bis. The encrypted ticket format is an encrypted encoded
2153 SSL_SESSION structure, that way new session features are automatically
2156 If a client application caches session in an SSL_SESSION structure
2157 support is transparent because tickets are now stored in the encoded
2160 The SSL_CTX structure automatically generates keys for ticket
2161 protection in servers so again support should be possible
2162 with no application modification.
2164 If a client or server wishes to disable RFC4507 support then the option
2165 SSL_OP_NO_TICKET can be set.
2167 Add a TLS extension debugging callback to allow the contents of any client
2168 or server extensions to be examined.
2170 This work was sponsored by Google.
2173 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
2174 OpenSSL should now compile cleanly on gcc 4.2
2175 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
2177 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
2178 support including streaming MAC support: this is required for GOST
2179 ciphersuite support.
2180 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
2182 *) Add option -stream to use PKCS#7 streaming in smime utility. New
2183 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
2184 to output in BER and PEM format.
2187 *) Experimental support for use of HMAC via EVP_PKEY interface. This
2188 allows HMAC to be handled via the EVP_DigestSign*() interface. The
2189 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
2190 ENGINE support for HMAC keys which are unextractable. New -mac and
2191 -macopt options to dgst utility.
2194 *) New option -sigopt to dgst utility. Update dgst to use
2195 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
2196 alternative signing paramaters such as X9.31 or PSS in the dgst
2200 *) Change ssl_cipher_apply_rule(), the internal function that does
2201 the work each time a ciphersuite string requests enabling
2202 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
2203 removing ("!foo+bar") a class of ciphersuites: Now it maintains
2204 the order of disabled ciphersuites such that those ciphersuites
2205 that most recently went from enabled to disabled not only stay
2206 in order with respect to each other, but also have higher priority
2207 than other disabled ciphersuites the next time ciphersuites are
2210 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
2211 the same ciphersuites as with "HIGH" alone, but in a specific
2212 order where the PSK ciphersuites come first (since they are the
2213 most recently disabled ciphersuites when "HIGH" is parsed).
2215 Also, change ssl_create_cipher_list() (using this new
2216 funcionality) such that between otherwise identical
2217 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
2221 *) Change ssl_create_cipher_list() so that it automatically
2222 arranges the ciphersuites in reasonable order before starting
2223 to process the rule string. Thus, the definition for "DEFAULT"
2224 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
2225 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
2226 This makes it much easier to arrive at a reasonable default order
2227 in applications for which anonymous ciphers are OK (meaning
2228 that you can't actually use DEFAULT).
2229 [Bodo Moeller; suggested by Victor Duchovni]
2231 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
2232 processing) into multiple integers instead of setting
2233 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
2234 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
2235 (These masks as well as the individual bit definitions are hidden
2236 away into the non-exported interface ssl/ssl_locl.h, so this
2237 change to the definition of the SSL_CIPHER structure shouldn't
2238 affect applications.) This give us more bits for each of these
2239 categories, so there is no longer a need to coagulate AES128 and
2240 AES256 into a single algorithm bit, and to coagulate Camellia128
2241 and Camellia256 into a single algorithm bit, which has led to all
2244 Thus, among other things, the kludge introduced in 0.9.7m and
2245 0.9.8e for masking out AES256 independently of AES128 or masking
2246 out Camellia256 independently of AES256 is not needed here in 0.9.9.
2248 With the change, we also introduce new ciphersuite aliases that
2249 so far were missing: "AES128", "AES256", "CAMELLIA128", and
2253 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
2254 Use the leftmost N bytes of the signature input if the input is
2255 larger than the prime q (with N being the size in bytes of q).
2258 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
2259 it yet and it is largely untested.
2262 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
2265 *) Initial incomplete changes to avoid need for function casts in OpenSSL
2266 some compilers (gcc 4.2 and later) reject their use. Safestack is
2267 reimplemented. Update ASN1 to avoid use of legacy functions.
2270 *) Win32/64 targets are linked with Winsock2.
2273 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
2274 to external functions. This can be used to increase CRL handling
2275 efficiency especially when CRLs are very large by (for example) storing
2276 the CRL revoked certificates in a database.
2279 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
2280 new CRLs added to a directory can be used. New command line option
2281 -verify_return_error to s_client and s_server. This causes real errors
2282 to be returned by the verify callback instead of carrying on no matter
2283 what. This reflects the way a "real world" verify callback would behave.
2286 *) GOST engine, supporting several GOST algorithms and public key formats.
2287 Kindly donated by Cryptocom.
2290 *) Partial support for Issuing Distribution Point CRL extension. CRLs
2291 partitioned by DP are handled but no indirect CRL or reason partitioning
2292 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
2293 selected via a scoring technique which handles IDP and AKID in CRLs.
2296 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
2297 will ultimately be used for all verify operations: this will remove the
2298 X509_STORE dependency on certificate verification and allow alternative
2299 lookup methods. X509_STORE based implementations of these two callbacks.
2302 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
2303 Modify get_crl() to find a valid (unexpired) CRL if possible.
2306 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
2307 this would be called X509_CRL_cmp() but that name is already used by
2308 a function that just compares CRL issuer names. Cache several CRL
2309 extensions in X509_CRL structure and cache CRLDP in X509.
2312 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
2313 this maps equivalent X509_NAME structures into a consistent structure.
2314 Name comparison can then be performed rapidly using memcmp().
2317 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
2321 *) Allow digests to supply their own micalg string for S/MIME type using
2322 the ctrl EVP_MD_CTRL_MICALG.
2325 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
2326 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
2327 ctrl. It can then customise the structure before and/or after signing
2331 *) New function OBJ_add_sigid() to allow application defined signature OIDs
2332 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
2333 to free up any added signature OIDs.
2336 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
2337 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
2338 digest and cipher tables. New options added to openssl utility:
2339 list-message-digest-algorithms and list-cipher-algorithms.
2342 *) Change the array representation of binary polynomials: the list
2343 of degrees of non-zero coefficients is now terminated with -1.
2344 Previously it was terminated with 0, which was also part of the
2345 value; thus, the array representation was not applicable to
2346 polynomials where t^0 has coefficient zero. This change makes
2347 the array representation useful in a more general context.
2350 *) Various modifications and fixes to SSL/TLS cipher string
2351 handling. For ECC, the code now distinguishes between fixed ECDH
2352 with RSA certificates on the one hand and with ECDSA certificates
2353 on the other hand, since these are separate ciphersuites. The
2354 unused code for Fortezza ciphersuites has been removed.
2356 For consistency with EDH, ephemeral ECDH is now called "EECDH"
2357 (not "ECDHE"). For consistency with the code for DH
2358 certificates, use of ECDH certificates is now considered ECDH
2359 authentication, not RSA or ECDSA authentication (the latter is
2360 merely the CA's signing algorithm and not actively used in the
2363 The temporary ciphersuite alias "ECCdraft" is no longer
2364 available, and ECC ciphersuites are no longer excluded from "ALL"
2365 and "DEFAULT". The following aliases now exist for RFC 4492
2366 ciphersuites, most of these by analogy with the DH case:
2368 kECDHr - ECDH cert, signed with RSA
2369 kECDHe - ECDH cert, signed with ECDSA
2370 kECDH - ECDH cert (signed with either RSA or ECDSA)
2371 kEECDH - ephemeral ECDH
2372 ECDH - ECDH cert or ephemeral ECDH
2378 AECDH - anonymous ECDH
2379 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
2383 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
2384 Use correct micalg parameters depending on digest(s) in signed message.
2387 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
2388 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
2391 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
2392 an engine to register a method. Add ENGINE lookups for methods and
2393 functional reference processing.
2396 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
2397 EVP_{Sign,Verify}* which allow an application to customise the signature
2401 *) New -resign option to smime utility. This adds one or more signers
2402 to an existing PKCS#7 signedData structure. Also -md option to use an
2403 alternative message digest algorithm for signing.
2406 *) Tidy up PKCS#7 routines and add new functions to make it easier to
2407 create PKCS7 structures containing multiple signers. Update smime
2408 application to support multiple signers.
2411 *) New -macalg option to pkcs12 utility to allow setting of an alternative
2415 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
2416 Reorganize PBE internals to lookup from a static table using NIDs,
2417 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
2418 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
2419 PRF which will be automatically used with PBES2.
2422 *) Replace the algorithm specific calls to generate keys in "req" with the
2426 *) Update PKCS#7 enveloped data routines to use new API. This is now
2427 supported by any public key method supporting the encrypt operation. A
2428 ctrl is added to allow the public key algorithm to examine or modify
2429 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
2433 *) Add a ctrl to asn1 method to allow a public key algorithm to express
2434 a default digest type to use. In most cases this will be SHA1 but some
2435 algorithms (such as GOST) need to specify an alternative digest. The
2436 return value indicates how strong the preference is 1 means optional and
2437 2 is mandatory (that is it is the only supported type). Modify
2438 ASN1_item_sign() to accept a NULL digest argument to indicate it should
2439 use the default md. Update openssl utilities to use the default digest
2440 type for signing if it is not explicitly indicated.
2443 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
2444 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
2445 signing method from the key type. This effectively removes the link
2446 between digests and public key types.
2449 *) Add an OID cross reference table and utility functions. Its purpose is to
2450 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
2451 rsaEncryption. This will allow some of the algorithm specific hackery
2452 needed to use the correct OID to be removed.
2455 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
2456 structures for PKCS7_sign(). They are now set up by the relevant public
2460 *) Add provisional EC pkey method with support for ECDSA and ECDH.
2463 *) Add support for key derivation (agreement) in the API, DH method and
2467 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
2468 public and private key formats. As a side effect these add additional
2469 command line functionality not previously available: DSA signatures can be
2470 generated and verified using pkeyutl and DH key support and generation in
2475 [Oliver Tappe <zooey@hirschkaefer.de>]
2477 *) New make target "install_html_docs" installs HTML renditions of the
2479 [Oliver Tappe <zooey@hirschkaefer.de>]
2481 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
2482 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
2483 support key and parameter generation and add initial key generation
2484 functionality for RSA.
2487 *) Add functions for main EVP_PKEY_method operations. The undocumented
2488 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
2489 EVP_PKEY_{encrypt,decrypt}_old.
2492 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
2493 key API, doesn't do much yet.
2496 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
2497 public key algorithms. New option to openssl utility:
2498 "list-public-key-algorithms" to print out info.
2501 *) Implement the Supported Elliptic Curves Extension for
2502 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2505 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
2506 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
2509 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
2510 utilities such as rsa, dsa, dsaparam etc except they process any key
2514 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
2515 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
2516 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
2520 *) Initial support for pluggable public key ASN1.
2521 De-spaghettify the public key ASN1 handling. Move public and private
2522 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
2523 algorithm specific handling to a single module within the relevant
2524 algorithm directory. Add functions to allow (near) opaque processing
2525 of public and private key structures.
2528 *) Implement the Supported Point Formats Extension for
2529 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2532 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
2533 for the psk identity [hint] and the psk callback functions to the
2534 SSL_SESSION, SSL and SSL_CTX structure.
2537 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
2541 SSL_CTX_use_psk_identity_hint
2542 SSL_get_psk_identity_hint
2543 SSL_get_psk_identity
2544 SSL_use_psk_identity_hint
2546 [Mika Kousa and Pasi Eronen of Nokia Corporation]
2548 *) Add RFC 3161 compliant time stamp request creation, response generation
2549 and response verification functionality.
2550 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
2552 *) Add initial support for TLS extensions, specifically for the server_name
2553 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2554 have new members for a host name. The SSL data structure has an
2555 additional member SSL_CTX *initial_ctx so that new sessions can be
2556 stored in that context to allow for session resumption, even after the
2557 SSL has been switched to a new SSL_CTX in reaction to a client's
2558 server_name extension.
2560 New functions (subject to change):
2562 SSL_get_servername()
2563 SSL_get_servername_type()
2566 New CTRL codes and macros (subject to change):
2568 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2569 - SSL_CTX_set_tlsext_servername_callback()
2570 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2571 - SSL_CTX_set_tlsext_servername_arg()
2572 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2574 openssl s_client has a new '-servername ...' option.
2576 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2577 '-key2 ...', '-servername_fatal' (subject to change). This allows
2578 testing the HostName extension for a specific single host name ('-cert'
2579 and '-key' remain fallbacks for handshakes without HostName
2580 negotiation). If the unrecognized_name alert has to be sent, this by
2581 default is a warning; it becomes fatal with the '-servername_fatal'
2584 [Peter Sylvester, Remy Allais, Christophe Renou]
2586 *) Whirlpool hash implementation is added.
2589 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
2590 bn(64,32). Because of instruction set limitations it doesn't have
2591 any negative impact on performance. This was done mostly in order
2592 to make it possible to share assembler modules, such as bn_mul_mont
2593 implementations, between 32- and 64-bit builds without hassle.
2596 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
2597 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
2601 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
2602 dedicated Montgomery multiplication procedure, is introduced.
2603 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
2604 "64-bit" performance on certain 32-bit targets.
2607 *) New option SSL_OP_NO_COMP to disable use of compression selectively
2608 in SSL structures. New SSL ctrl to set maximum send fragment size.
2609 Save memory by seeting the I/O buffer sizes dynamically instead of
2610 using the maximum available value.
2613 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
2614 in addition to the text details.
2617 *) Very, very preliminary EXPERIMENTAL support for printing of general
2618 ASN1 structures. This currently produces rather ugly output and doesn't
2619 handle several customised structures at all.
2622 *) Integrated support for PVK file format and some related formats such
2623 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
2624 these in the 'rsa' and 'dsa' utilities.
2627 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
2630 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
2631 place for the (very old) "NETSCAPE" format certificates which are now
2632 handled using new ASN1 code equivalents.
2635 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
2636 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
2637 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
2640 *) Modify CRL distribution points extension code to print out previously
2641 unsupported fields. Enhance extension setting code to allow setting of
2645 *) Add print and set support for Issuing Distribution Point CRL extension.
2648 *) Change 'Configure' script to enable Camellia by default.
2651 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
2653 *) When rejecting SSL/TLS records due to an incorrect version number, never
2654 update s->server with a new major version number. As of
2655 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
2656 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
2657 the previous behavior could result in a read attempt at NULL when
2658 receiving specific incorrect SSL/TLS records once record payload
2659 protection is active. (CVE-2010-0740)
2660 [Bodo Moeller, Adam Langley <agl@chromium.org>]
2662 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
2663 could be crashed if the relevant tables were not present (e.g. chrooted).
2664 [Tomas Hoger <thoger@redhat.com>]
2666 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
2668 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
2669 [Martin Olsson, Neel Mehta]
2671 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
2672 accommodate for stack sorting, always a write lock!).
2675 *) On some versions of WIN32 Heap32Next is very slow. This can cause
2676 excessive delays in the RAND_poll(): over a minute. As a workaround
2677 include a time check in the inner Heap32Next loop too.
2680 *) The code that handled flushing of data in SSL/TLS originally used the
2681 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
2682 the problem outlined in PR#1949. The fix suggested there however can
2683 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
2684 of Apache). So instead simplify the code to flush unconditionally.
2685 This should be fine since flushing with no data to flush is a no op.
2688 *) Handle TLS versions 2.0 and later properly and correctly use the
2689 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
2690 off ancient servers have a habit of sticking around for a while...
2693 *) Modify compression code so it frees up structures without using the
2694 ex_data callbacks. This works around a problem where some applications
2695 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
2696 restarting) then use compression (e.g. SSL with compression) later.
2697 This results in significant per-connection memory leaks and
2698 has caused some security issues including CVE-2008-1678 and
2702 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
2703 change when encrypting or decrypting.
2706 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
2707 connect and renegotiate with servers which do not support RI.
2708 Until RI is more widely deployed this option is enabled by default.
2711 *) Add "missing" ssl ctrls to clear options and mode.
2714 *) If client attempts to renegotiate and doesn't support RI respond with
2715 a no_renegotiation alert as required by RFC5746. Some renegotiating
2716 TLS clients will continue a connection gracefully when they receive
2717 the alert. Unfortunately OpenSSL mishandled this alert and would hang
2718 waiting for a server hello which it will never receive. Now we treat a
2719 received no_renegotiation alert as a fatal error. This is because
2720 applications requesting a renegotiation might well expect it to succeed
2721 and would have no code in place to handle the server denying it so the
2722 only safe thing to do is to terminate the connection.
2725 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
2726 peer supports secure renegotiation and 0 otherwise. Print out peer
2727 renegotiation support in s_client/s_server.
2730 *) Replace the highly broken and deprecated SPKAC certification method with
2731 the updated NID creation version. This should correctly handle UTF8.
2734 *) Implement RFC5746. Re-enable renegotiation but require the extension
2735 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
2736 turns out to be a bad idea. It has been replaced by
2737 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
2738 SSL_CTX_set_options(). This is really not recommended unless you
2739 know what you are doing.
2740 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
2742 *) Fixes to stateless session resumption handling. Use initial_ctx when
2743 issuing and attempting to decrypt tickets in case it has changed during
2744 servername handling. Use a non-zero length session ID when attempting
2745 stateless session resumption: this makes it possible to determine if
2746 a resumption has occurred immediately after receiving server hello
2747 (several places in OpenSSL subtly assume this) instead of later in
2751 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
2752 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
2753 fixes for a few places where the return code is not checked
2755 [Julia Lawall <julia@diku.dk>]
2757 *) Add --strict-warnings option to Configure script to include devteam
2758 warnings in other configurations.
2761 *) Add support for --libdir option and LIBDIR variable in makefiles. This
2762 makes it possible to install openssl libraries in locations which
2763 have names other than "lib", for example "/usr/lib64" which some
2765 [Steve Henson, based on patch from Jeremy Utley]
2767 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
2768 X690 8.9.12 and can produce some misleading textual output of OIDs.
2769 [Steve Henson, reported by Dan Kaminsky]
2771 *) Delete MD2 from algorithm tables. This follows the recommendation in
2772 several standards that it is not used in new applications due to
2773 several cryptographic weaknesses. For binary compatibility reasons
2774 the MD2 API is still compiled in by default.
2777 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
2781 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
2782 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
2784 [Guenter <lists@gknw.net>]
2786 *) Fix the server certificate chain building code to use X509_verify_cert(),
2787 it used to have an ad-hoc builder which was unable to cope with anything
2788 other than a simple chain.
2789 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
2791 *) Don't check self signed certificate signatures in X509_verify_cert()
2792 by default (a flag can override this): it just wastes time without
2793 adding any security. As a useful side effect self signed root CAs
2794 with non-FIPS digests are now usable in FIPS mode.
2797 *) In dtls1_process_out_of_seq_message() the check if the current message
2798 is already buffered was missing. For every new message was memory
2799 allocated, allowing an attacker to perform an denial of service attack
2800 with sending out of seq handshake messages until there is no memory
2801 left. Additionally every future messege was buffered, even if the
2802 sequence number made no sense and would be part of another handshake.
2803 So only messages with sequence numbers less than 10 in advance will be
2804 buffered. (CVE-2009-1378)
2805 [Robin Seggelmann, discovered by Daniel Mentz]
2807 *) Records are buffered if they arrive with a future epoch to be
2808 processed after finishing the corresponding handshake. There is
2809 currently no limitation to this buffer allowing an attacker to perform
2810 a DOS attack with sending records with future epochs until there is no
2811 memory left. This patch adds the pqueue_size() function to determine
2812 the size of a buffer and limits the record buffer to 100 entries.
2814 [Robin Seggelmann, discovered by Daniel Mentz]
2816 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
2817 parent structure is freed. (CVE-2009-1379)
2820 *) Handle non-blocking I/O properly in SSL_shutdown() call.
2821 [Darryl Miles <darryl-mailinglists@netbauds.net>]
2824 [Ilya O. <vrghost@gmail.com>]
2826 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
2828 *) Disable renegotiation completely - this fixes a severe security
2829 problem (CVE-2009-3555) at the cost of breaking all
2830 renegotiation. Renegotiation can be re-enabled by setting
2831 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
2832 run-time. This is really not recommended unless you know what
2836 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
2838 *) Don't set val to NULL when freeing up structures, it is freed up by
2839 underlying code. If sizeof(void *) > sizeof(long) this can result in
2840 zeroing past the valid field. (CVE-2009-0789)
2841 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
2843 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
2844 checked correctly. This would allow some invalid signed attributes to
2845 appear to verify correctly. (CVE-2009-0591)
2846 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2848 *) Reject UniversalString and BMPString types with invalid lengths. This
2849 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
2850 a legal length. (CVE-2009-0590)
2853 *) Set S/MIME signing as the default purpose rather than setting it
2854 unconditionally. This allows applications to override it at the store
2858 *) Permit restricted recursion of ASN1 strings. This is needed in practice
2859 to handle some structures.
2862 *) Improve efficiency of mem_gets: don't search whole buffer each time
2864 [Jeremy Shapiro <jnshapir@us.ibm.com>]
2866 *) New -hex option for openssl rand.
2869 *) Print out UTF8String and NumericString when parsing ASN1.
2872 *) Support NumericString type for name components.
2875 *) Allow CC in the environment to override the automatically chosen
2876 compiler. Note that nothing is done to ensure flags work with the
2880 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
2882 *) Properly check EVP_VerifyFinal() and similar return values
2884 [Ben Laurie, Bodo Moeller, Google Security Team]
2886 *) Enable TLS extensions by default.
2889 *) Allow the CHIL engine to be loaded, whether the application is
2890 multithreaded or not. (This does not release the developer from the
2891 obligation to set up the dynamic locking callbacks.)
2892 [Sander Temme <sander@temme.net>]
2894 *) Use correct exit code if there is an error in dgst command.
2895 [Steve Henson; problem pointed out by Roland Dirlewanger]
2897 *) Tweak Configure so that you need to say "experimental-jpake" to enable
2898 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
2901 *) Add experimental JPAKE support, including demo authentication in
2902 s_client and s_server.
2905 *) Set the comparison function in v3_addr_canonize().
2906 [Rob Austein <sra@hactrn.net>]
2908 *) Add support for XMPP STARTTLS in s_client.
2909 [Philip Paeps <philip@freebsd.org>]
2911 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
2912 to ensure that even with this option, only ciphersuites in the
2913 server's preference list will be accepted. (Note that the option
2914 applies only when resuming a session, so the earlier behavior was
2915 just about the algorithm choice for symmetric cryptography.)
2918 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
2920 *) Fix NULL pointer dereference if a DTLS server received
2921 ChangeCipherSpec as first record (CVE-2009-1386).
2924 *) Fix a state transition in s3_srvr.c and d1_srvr.c
2925 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
2928 *) The fix in 0.9.8c that supposedly got rid of unsafe
2929 double-checked locking was incomplete for RSA blinding,
2930 addressing just one layer of what turns out to have been
2931 doubly unsafe triple-checked locking.
2933 So now fix this for real by retiring the MONT_HELPER macro
2934 in crypto/rsa/rsa_eay.c.
2936 [Bodo Moeller; problem pointed out by Marius Schilder]
2938 *) Various precautionary measures:
2940 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
2942 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
2943 (NB: This would require knowledge of the secret session ticket key
2944 to exploit, in which case you'd be SOL either way.)
2946 - Change bn_nist.c so that it will properly handle input BIGNUMs
2947 outside the expected range.
2949 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
2952 [Neel Mehta, Bodo Moeller]
2954 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
2955 the load fails. Useful for distros.
2956 [Ben Laurie and the FreeBSD team]
2958 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
2961 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
2964 *) Expand ENGINE to support engine supplied SSL client certificate functions.
2966 This work was sponsored by Logica.
2969 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
2970 keystores. Support for SSL/TLS client authentication too.
2971 Not compiled unless enable-capieng specified to Configure.
2973 This work was sponsored by Logica.
2976 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
2977 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
2978 attribute creation routines such as certifcate requests and PKCS#12
2982 Changes between 0.9.8g and 0.9.8h [28 May 2008]
2984 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
2985 handshake which could lead to a cilent crash as found using the
2986 Codenomicon TLS test suite (CVE-2008-1672)
2987 [Steve Henson, Mark Cox]
2989 *) Fix double free in TLS server name extensions which could lead to
2990 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2993 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2995 Clear the error queue to ensure that error entries left from
2996 older function calls do not interfere with the correct operation.
2997 [Lutz Jaenicke, Erik de Castro Lopo]
2999 *) Remove root CA certificates of commercial CAs:
3001 The OpenSSL project does not recommend any specific CA and does not
3002 have any policy with respect to including or excluding any CA.
3003 Therefore it does not make any sense to ship an arbitrary selection
3004 of root CA certificates with the OpenSSL software.
3007 *) RSA OAEP patches to fix two separate invalid memory reads.
3008 The first one involves inputs when 'lzero' is greater than
3009 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
3010 before the beginning of from). The second one involves inputs where
3011 the 'db' section contains nothing but zeroes (there is a one-byte
3012 invalid read after the end of 'db').
3013 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3015 *) Partial backport from 0.9.9-dev:
3017 Introduce bn_mul_mont (dedicated Montgomery multiplication
3018 procedure) as a candidate for BIGNUM assembler implementation.
3019 While 0.9.9-dev uses assembler for various architectures, only
3020 x86_64 is available by default here in the 0.9.8 branch, and
3021 32-bit x86 is available through a compile-time setting.
3023 To try the 32-bit x86 assembler implementation, use Configure
3024 option "enable-montasm" (which exists only for this backport).
3026 As "enable-montasm" for 32-bit x86 disclaims code stability
3027 anyway, in this constellation we activate additional code
3028 backported from 0.9.9-dev for further performance improvements,
3029 namely BN_from_montgomery_word. (To enable this otherwise,
3030 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
3032 [Andy Polyakov (backport partially by Bodo Moeller)]
3034 *) Add TLS session ticket callback. This allows an application to set
3035 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
3036 values. This is useful for key rollover for example where several key
3037 sets may exist with different names.
3040 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
3041 This was broken until now in 0.9.8 releases, such that the only way
3042 a registered ENGINE could be used (assuming it initialises
3043 successfully on the host) was to explicitly set it as the default
3044 for the relevant algorithms. This is in contradiction with 0.9.7
3045 behaviour and the documentation. With this fix, when an ENGINE is
3046 registered into a given algorithm's table of implementations, the
3047 'uptodate' flag is reset so that auto-discovery will be used next
3048 time a new context for that algorithm attempts to select an
3050 [Ian Lister (tweaked by Geoff Thorpe)]
3052 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
3053 implemention in the following ways:
3055 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
3058 Lack of BER streaming support means one pass streaming processing is
3059 only supported if data is detached: setting the streaming flag is
3060 ignored for embedded content.
3062 CMS support is disabled by default and must be explicitly enabled
3063 with the enable-cms configuration option.
3066 *) Update the GMP engine glue to do direct copies between BIGNUM and
3067 mpz_t when openssl and GMP use the same limb size. Otherwise the
3068 existing "conversion via a text string export" trick is still used.
3069 [Paul Sheer <paulsheer@gmail.com>]
3071 *) Zlib compression BIO. This is a filter BIO which compressed and
3072 uncompresses any data passed through it.
3075 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
3076 RFC3394 compatible AES key wrapping.
3079 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
3080 sets string data without copying. X509_ALGOR_set0() and
3081 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
3082 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
3083 from an X509_ATTRIBUTE structure optionally checking it occurs only
3084 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
3088 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
3089 to get the expected BN_FLG_CONSTTIME behavior.
3090 [Bodo Moeller (Google)]
3094 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
3095 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
3096 - added some more tests to do_tests.pl
3097 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
3098 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
3099 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
3100 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
3101 - various changes to netware.pl to enable gcc-cross builds on Win32
3103 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
3104 - various changes to fix missing prototype warnings
3105 - fixed x86nasm.pl to create correct asm files for NASM COFF output
3106 - added AES, WHIRLPOOL and CPUID assembler code to build files
3107 - added missing AES assembler make rules to mk1mf.pl
3108 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
3109 [Guenter Knauf <eflash@gmx.net>]
3111 *) Implement certificate status request TLS extension defined in RFC3546.
3112 A client can set the appropriate parameters and receive the encoded
3113 OCSP response via a callback. A server can query the supplied parameters
3114 and set the encoded OCSP response in the callback. Add simplified examples
3115 to s_client and s_server.
3118 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
3120 *) Fix various bugs:
3121 + Binary incompatibility of ssl_ctx_st structure
3122 + DTLS interoperation with non-compliant servers
3123 + Don't call get_session_cb() without proposed session
3124 + Fix ia64 assembler code
3125 [Andy Polyakov, Steve Henson]
3127 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
3129 *) DTLS Handshake overhaul. There were longstanding issues with
3130 OpenSSL DTLS implementation, which were making it impossible for
3131 RFC 4347 compliant client to communicate with OpenSSL server.
3132 Unfortunately just fixing these incompatibilities would "cut off"
3133 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
3134 server keeps tolerating non RFC compliant syntax. The opposite is
3135 not true, 0.9.8f client can not communicate with earlier server.
3136 This update even addresses CVE-2007-4995.
3139 *) Changes to avoid need for function casts in OpenSSL: some compilers
3140 (gcc 4.2 and later) reject their use.
3141 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
3144 *) Add RFC4507 support to OpenSSL. This includes the corrections in
3145 RFC4507bis. The encrypted ticket format is an encrypted encoded
3146 SSL_SESSION structure, that way new session features are automatically
3149 If a client application caches session in an SSL_SESSION structure
3150 support is transparent because tickets are now stored in the encoded
3153 The SSL_CTX structure automatically generates keys for ticket
3154 protection in servers so again support should be possible
3155 with no application modification.
3157 If a client or server wishes to disable RFC4507 support then the option
3158 SSL_OP_NO_TICKET can be set.
3160 Add a TLS extension debugging callback to allow the contents of any client
3161 or server extensions to be examined.
3163 This work was sponsored by Google.
3166 *) Add initial support for TLS extensions, specifically for the server_name
3167 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
3168 have new members for a host name. The SSL data structure has an
3169 additional member SSL_CTX *initial_ctx so that new sessions can be
3170 stored in that context to allow for session resumption, even after the
3171 SSL has been switched to a new SSL_CTX in reaction to a client's
3172 server_name extension.
3174 New functions (subject to change):
3176 SSL_get_servername()
3177 SSL_get_servername_type()
3180 New CTRL codes and macros (subject to change):
3182 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
3183 - SSL_CTX_set_tlsext_servername_callback()
3184 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
3185 - SSL_CTX_set_tlsext_servername_arg()
3186 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
3188 openssl s_client has a new '-servername ...' option.
3190 openssl s_server has new options '-servername_host ...', '-cert2 ...',
3191 '-key2 ...', '-servername_fatal' (subject to change). This allows
3192 testing the HostName extension for a specific single host name ('-cert'
3193 and '-key' remain fallbacks for handshakes without HostName
3194 negotiation). If the unrecognized_name alert has to be sent, this by
3195 default is a warning; it becomes fatal with the '-servername_fatal'
3198 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
3200 *) Add AES and SSE2 assembly language support to VC++ build.
3203 *) Mitigate attack on final subtraction in Montgomery reduction.
3206 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
3207 (which previously caused an internal error).
3210 *) Squeeze another 10% out of IGE mode when in != out.
3213 *) AES IGE mode speedup.
3214 [Dean Gaudet (Google)]
3216 *) Add the Korean symmetric 128-bit cipher SEED (see
3217 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
3218 add SEED ciphersuites from RFC 4162:
3220 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
3221 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
3222 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
3223 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
3225 To minimize changes between patchlevels in the OpenSSL 0.9.8
3226 series, SEED remains excluded from compilation unless OpenSSL
3227 is configured with 'enable-seed'.
3228 [KISA, Bodo Moeller]
3230 *) Mitigate branch prediction attacks, which can be practical if a
3231 single processor is shared, allowing a spy process to extract
3232 information. For detailed background information, see
3233 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
3234 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
3235 and Necessary Software Countermeasures"). The core of the change
3236 are new versions BN_div_no_branch() and
3237 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
3238 respectively, which are slower, but avoid the security-relevant
3239 conditional branches. These are automatically called by BN_div()
3240 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
3241 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
3242 remove a conditional branch.
3244 BN_FLG_CONSTTIME is the new name for the previous
3245 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
3246 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
3247 in the exponent causes BN_mod_exp_mont() to use the alternative
3248 implementation in BN_mod_exp_mont_consttime().) The old name
3249 remains as a deprecated alias.
3251 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
3252 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
3253 constant-time implementations for more than just exponentiation.
3254 Here too the old name is kept as a deprecated alias.
3256 BN_BLINDING_new() will now use BN_dup() for the modulus so that
3257 the BN_BLINDING structure gets an independent copy of the
3258 modulus. This means that the previous "BIGNUM *m" argument to
3259 BN_BLINDING_new() and to BN_BLINDING_create_param() now
3260 essentially becomes "const BIGNUM *m", although we can't actually
3261 change this in the header file before 0.9.9. It allows
3262 RSA_setup_blinding() to use BN_with_flags() on the modulus to
3263 enable BN_FLG_CONSTTIME.
3265 [Matthew D Wood (Intel Corp)]
3267 *) In the SSL/TLS server implementation, be strict about session ID
3268 context matching (which matters if an application uses a single
3269 external cache for different purposes). Previously,
3270 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
3271 set. This did ensure strict client verification, but meant that,
3272 with applications using a single external cache for quite
3273 different requirements, clients could circumvent ciphersuite
3274 restrictions for a given session ID context by starting a session
3275 in a different context.
3278 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3279 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3280 authentication-only ciphersuites.
3283 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
3284 not complete and could lead to a possible single byte overflow
3285 (CVE-2007-5135) [Ben Laurie]
3287 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
3289 *) Since AES128 and AES256 (and similarly Camellia128 and
3290 Camellia256) share a single mask bit in the logic of
3291 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3292 kludge to work properly if AES128 is available and AES256 isn't
3293 (or if Camellia128 is available and Camellia256 isn't).
3296 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
3297 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
3298 When a point or a seed is encoded in a BIT STRING, we need to
3299 prevent the removal of trailing zero bits to get the proper DER
3300 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
3301 of a NamedBitList, for which trailing 0 bits need to be removed.)
3304 *) Have SSL/TLS server implementation tolerate "mismatched" record
3305 protocol version while receiving ClientHello even if the
3306 ClientHello is fragmented. (The server can't insist on the
3307 particular protocol version it has chosen before the ServerHello
3308 message has informed the client about his choice.)
3311 *) Add RFC 3779 support.
3312 [Rob Austein for ARIN, Ben Laurie]
3314 *) Load error codes if they are not already present instead of using a
3315 static variable. This allows them to be cleanly unloaded and reloaded.
3316 Improve header file function name parsing.
3319 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
3320 or CAPABILITY handshake as required by RFCs.
3323 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
3325 *) Introduce limits to prevent malicious keys being able to
3326 cause a denial of service. (CVE-2006-2940)
3327 [Steve Henson, Bodo Moeller]
3329 *) Fix ASN.1 parsing of certain invalid structures that can result
3330 in a denial of service. (CVE-2006-2937) [Steve Henson]
3332 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3333 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3335 *) Fix SSL client code which could crash if connecting to a
3336 malicious SSLv2 server. (CVE-2006-4343)
3337 [Tavis Ormandy and Will Drewry, Google Security Team]
3339 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
3340 match only those. Before that, "AES256-SHA" would be interpreted
3341 as a pattern and match "AES128-SHA" too (since AES128-SHA got
3342 the same strength classification in 0.9.7h) as we currently only
3343 have a single AES bit in the ciphersuite description bitmap.
3344 That change, however, also applied to ciphersuite strings such as
3345 "RC4-MD5" that intentionally matched multiple ciphersuites --
3346 namely, SSL 2.0 ciphersuites in addition to the more common ones
3347 from SSL 3.0/TLS 1.0.
3349 So we change the selection algorithm again: Naming an explicit
3350 ciphersuite selects this one ciphersuite, and any other similar
3351 ciphersuite (same bitmap) from *other* protocol versions.
3352 Thus, "RC4-MD5" again will properly select both the SSL 2.0
3353 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
3355 Since SSL 2.0 does not have any ciphersuites for which the
3356 128/256 bit distinction would be relevant, this works for now.
3357 The proper fix will be to use different bits for AES128 and
3358 AES256, which would have avoided the problems from the beginning;
3359 however, bits are scarce, so we can only do this in a new release
3360 (not just a patchlevel) when we can change the SSL_CIPHER
3361 definition to split the single 'unsigned long mask' bitmap into
3362 multiple values to extend the available space.
3366 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
3368 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3369 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3371 *) Add AES IGE and biIGE modes.
3374 *) Change the Unix randomness entropy gathering to use poll() when
3375 possible instead of select(), since the latter has some
3376 undesirable limitations.
3377 [Darryl Miles via Richard Levitte and Bodo Moeller]
3379 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
3380 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
3381 cannot be implicitly activated as part of, e.g., the "AES" alias.
3382 However, please upgrade to OpenSSL 0.9.9[-dev] for
3383 non-experimental use of the ECC ciphersuites to get TLS extension
3384 support, which is required for curve and point format negotiation
3385 to avoid potential handshake problems.
3388 *) Disable rogue ciphersuites:
3390 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3391 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3392 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3394 The latter two were purportedly from
3395 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3398 Also deactivate the remaining ciphersuites from
3399 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3400 unofficial, and the ID has long expired.
3403 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3404 dual-core machines) and other potential thread-safety issues.
3407 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
3408 versions), which is now available for royalty-free use
3409 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
3410 Also, add Camellia TLS ciphersuites from RFC 4132.
3412 To minimize changes between patchlevels in the OpenSSL 0.9.8
3413 series, Camellia remains excluded from compilation unless OpenSSL
3414 is configured with 'enable-camellia'.
3417 *) Disable the padding bug check when compression is in use. The padding
3418 bug check assumes the first packet is of even length, this is not
3419 necessarily true if compresssion is enabled and can result in false
3420 positives causing handshake failure. The actual bug test is ancient
3421 code so it is hoped that implementations will either have fixed it by
3422 now or any which still have the bug do not support compression.
3425 Changes between 0.9.8a and 0.9.8b [04 May 2006]
3427 *) When applying a cipher rule check to see if string match is an explicit
3428 cipher suite and only match that one cipher suite if it is.
3431 *) Link in manifests for VC++ if needed.
3432 [Austin Ziegler <halostatue@gmail.com>]
3434 *) Update support for ECC-based TLS ciphersuites according to
3435 draft-ietf-tls-ecc-12.txt with proposed changes (but without
3436 TLS extensions, which are supported starting with the 0.9.9
3437 branch, not in the OpenSSL 0.9.8 branch).
3440 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
3441 opaque EVP_CIPHER_CTX handling.
3444 *) Fixes and enhancements to zlib compression code. We now only use
3445 "zlib1.dll" and use the default __cdecl calling convention on Win32
3446 to conform with the standards mentioned here:
3447 http://www.zlib.net/DLL_FAQ.txt
3448 Static zlib linking now works on Windows and the new --with-zlib-include
3449 --with-zlib-lib options to Configure can be used to supply the location
3450 of the headers and library. Gracefully handle case where zlib library
3454 *) Several fixes and enhancements to the OID generation code. The old code
3455 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
3456 handle numbers larger than ULONG_MAX, truncated printing and had a
3457 non standard OBJ_obj2txt() behaviour.
3460 *) Add support for building of engines under engine/ as shared libraries
3461 under VC++ build system.
3464 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
3465 Hopefully, we will not see any false combination of paths any more.
3468 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
3470 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3471 (part of SSL_OP_ALL). This option used to disable the
3472 countermeasure against man-in-the-middle protocol-version
3473 rollback in the SSL 2.0 server implementation, which is a bad
3474 idea. (CVE-2005-2969)
3476 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3477 for Information Security, National Institute of Advanced Industrial
3478 Science and Technology [AIST], Japan)]
3480 *) Add two function to clear and return the verify parameter flags.
3483 *) Keep cipherlists sorted in the source instead of sorting them at
3484 runtime, thus removing the need for a lock.
3487 *) Avoid some small subgroup attacks in Diffie-Hellman.
3488 [Nick Mathewson and Ben Laurie]
3490 *) Add functions for well-known primes.
3493 *) Extended Windows CE support.
3494 [Satoshi Nakamura and Andy Polyakov]
3496 *) Initialize SSL_METHOD structures at compile time instead of during
3497 runtime, thus removing the need for a lock.
3500 *) Make PKCS7_decrypt() work even if no certificate is supplied by
3501 attempting to decrypt each encrypted key in turn. Add support to
3505 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
3507 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
3510 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
3513 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
3514 key into the same file any more.
3517 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
3520 *) Add -utf8 command line and config file option to 'ca'.
3521 [Stefan <stf@udoma.org]
3523 *) Removed the macro des_crypt(), as it seems to conflict with some
3524 libraries. Use DES_crypt().
3527 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
3528 involves renaming the source and generated shared-libs for
3529 both. The engines will accept the corrected or legacy ids
3530 ('ncipher' and '4758_cca' respectively) when binding. NB,
3531 this only applies when building 'shared'.
3532 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
3534 *) Add attribute functions to EVP_PKEY structure. Modify
3535 PKCS12_create() to recognize a CSP name attribute and
3536 use it. Make -CSP option work again in pkcs12 utility.
3539 *) Add new functionality to the bn blinding code:
3540 - automatic re-creation of the BN_BLINDING parameters after
3541 a fixed number of uses (currently 32)
3542 - add new function for parameter creation
3543 - introduce flags to control the update behaviour of the
3544 BN_BLINDING parameters
3545 - hide BN_BLINDING structure
3546 Add a second BN_BLINDING slot to the RSA structure to improve
3547 performance when a single RSA object is shared among several
3551 *) Add support for DTLS.
3552 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
3554 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
3555 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
3558 *) Remove buggy and incomplete DH cert support from
3559 ssl/ssl_rsa.c and ssl/s3_both.c
3562 *) Use SHA-1 instead of MD5 as the default digest algorithm for
3563 the apps/openssl applications.
3566 *) Compile clean with "-Wall -Wmissing-prototypes
3567 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
3568 DEBUG_SAFESTACK must also be set.
3571 *) Change ./Configure so that certain algorithms can be disabled by default.
3572 The new counterpiece to "no-xxx" is "enable-xxx".
3574 The patented RC5 and MDC2 algorithms will now be disabled unless
3575 "enable-rc5" and "enable-mdc2", respectively, are specified.
3577 (IDEA remains enabled despite being patented. This is because IDEA
3578 is frequently required for interoperability, and there is no license
3579 fee for non-commercial use. As before, "no-idea" can be used to
3580 avoid this algorithm.)
3584 *) Add processing of proxy certificates (see RFC 3820). This work was
3585 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
3586 EGEE (Enabling Grids for E-science in Europe).
3589 *) RC4 performance overhaul on modern architectures/implementations, such
3590 as Intel P4, IA-64 and AMD64.
3593 *) New utility extract-section.pl. This can be used specify an alternative
3594 section number in a pod file instead of having to treat each file as
3595 a separate case in Makefile. This can be done by adding two lines to the
3598 =for comment openssl_section:XXX
3600 The blank line is mandatory.
3604 *) New arguments -certform, -keyform and -pass for s_client and s_server
3605 to allow alternative format key and certificate files and passphrase
3609 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
3610 update associated structures and add various utility functions.
3612 Add new policy related verify parameters, include policy checking in
3613 standard verify code. Enhance 'smime' application with extra parameters
3614 to support policy checking and print out.
3617 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
3618 Nehemiah processors. These extensions support AES encryption in hardware
3619 as well as RNG (though RNG support is currently disabled).
3620 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
3622 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
3625 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
3626 [Andy Polyakov and a number of other people]
3628 *) Improved PowerPC platform support. Most notably BIGNUM assembler
3629 implementation contributed by IBM.
3630 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
3632 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
3633 exponent rather than 'unsigned long'. There is a corresponding change to
3634 the new 'rsa_keygen' element of the RSA_METHOD structure.
3635 [Jelte Jansen, Geoff Thorpe]
3637 *) Functionality for creating the initial serial number file is now
3638 moved from CA.pl to the 'ca' utility with a new option -create_serial.
3640 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
3641 number file to 1, which is bound to cause problems. To avoid
3642 the problems while respecting compatibility between different 0.9.7
3643 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
3644 CA.pl for serial number initialization. With the new release 0.9.8,
3645 we can fix the problem directly in the 'ca' utility.)
3648 *) Reduced header interdepencies by declaring more opaque objects in
3649 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
3650 give fewer recursive includes, which could break lazy source code - so
3651 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
3652 developers should define this symbol when building and using openssl to
3653 ensure they track the recommended behaviour, interfaces, [etc], but
3654 backwards-compatible behaviour prevails when this isn't defined.
3657 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
3660 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
3661 This will generate a random key of the appropriate length based on the
3662 cipher context. The EVP_CIPHER can provide its own random key generation
3663 routine to support keys of a specific form. This is used in the des and
3664 3des routines to generate a key of the correct parity. Update S/MIME
3665 code to use new functions and hence generate correct parity DES keys.
3666 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
3667 valid (weak or incorrect parity).
3670 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
3671 as looking them up. This is useful when the verified structure may contain
3672 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
3673 present unless the new PKCS7_NO_CRL flag is asserted.
3676 *) Extend ASN1 oid configuration module. It now additionally accepts the
3679 shortName = some long name, 1.2.3.4
3682 *) Reimplemented the BN_CTX implementation. There is now no more static
3683 limitation on the number of variables it can handle nor the depth of the
3684 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
3685 information can now expand as required, and rather than having a single
3686 static array of bignums, BN_CTX now uses a linked-list of such arrays
3687 allowing it to expand on demand whilst maintaining the usefulness of
3688 BN_CTX's "bundling".
3691 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
3692 to allow all RSA operations to function using a single BN_CTX.
3695 *) Preliminary support for certificate policy evaluation and checking. This
3696 is initially intended to pass the tests outlined in "Conformance Testing
3697 of Relying Party Client Certificate Path Processing Logic" v1.07.
3700 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
3701 remained unused and not that useful. A variety of other little bignum
3702 tweaks and fixes have also been made continuing on from the audit (see
3706 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
3707 associated ASN1, EVP and SSL functions and old ASN1 macros.
3710 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
3711 and this should never fail. So the return value from the use of
3712 BN_set_word() (which can fail due to needless expansion) is now deprecated;
3713 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
3716 *) BN_CTX_get() should return zero-valued bignums, providing the same
3717 initialised value as BN_new().
3718 [Geoff Thorpe, suggested by Ulf Möller]
3720 *) Support for inhibitAnyPolicy certificate extension.
3723 *) An audit of the BIGNUM code is underway, for which debugging code is
3724 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
3725 is considered valid when processing BIGNUMs, and causes execution to
3726 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
3727 further steps are taken to deliberately pollute unused data in BIGNUM
3728 structures to try and expose faulty code further on. For now, openssl will
3729 (in its default mode of operation) continue to tolerate the inconsistent
3730 forms that it has tolerated in the past, but authors and packagers should
3731 consider trying openssl and their own applications when compiled with
3732 these debugging symbols defined. It will help highlight potential bugs in
3733 their own code, and will improve the test coverage for OpenSSL itself. At
3734 some point, these tighter rules will become openssl's default to improve
3735 maintainability, though the assert()s and other overheads will remain only
3736 in debugging configurations. See bn.h for more details.
3737 [Geoff Thorpe, Nils Larsch, Ulf Möller]
3739 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
3740 that can only be obtained through BN_CTX_new() (which implicitly
3741 initialises it). The presence of this function only made it possible
3742 to overwrite an existing structure (and cause memory leaks).
3745 *) Because of the callback-based approach for implementing LHASH as a
3746 template type, lh_insert() adds opaque objects to hash-tables and
3747 lh_doall() or lh_doall_arg() are typically used with a destructor callback
3748 to clean up those corresponding objects before destroying the hash table
3749 (and losing the object pointers). So some over-zealous constifications in
3750 LHASH have been relaxed so that lh_insert() does not take (nor store) the
3751 objects as "const" and the lh_doall[_arg] callback wrappers are not
3752 prototyped to have "const" restrictions on the object pointers they are
3753 given (and so aren't required to cast them away any more).
3756 *) The tmdiff.h API was so ugly and minimal that our own timing utility
3757 (speed) prefers to use its own implementation. The two implementations
3758 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
3759 its object type properly exposed (MS_TM) instead of casting to/from "char
3760 *". This may still change yet if someone realises MS_TM and "ms_time_***"
3761 aren't necessarily the greatest nomenclatures - but this is what was used
3762 internally to the implementation so I've used that for now.
3765 *) Ensure that deprecated functions do not get compiled when
3766 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
3767 the self-tests were still using deprecated key-generation functions so
3768 these have been updated also.
3771 *) Reorganise PKCS#7 code to separate the digest location functionality
3772 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
3773 New function PKCS7_set_digest() to set the digest type for PKCS#7
3774 digestedData type. Add additional code to correctly generate the
3775 digestedData type and add support for this type in PKCS7 initialization
3779 *) New function PKCS7_set0_type_other() this initializes a PKCS7
3780 structure of type "other".
3783 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
3784 sure the loop does correctly stop and breaking ("division by zero")
3785 modulus operations are not performed. The (pre-generated) prime
3786 table crypto/bn/bn_prime.h was already correct, but it could not be
3787 re-generated on some platforms because of the "division by zero"
3788 situation in the script.
3789 [Ralf S. Engelschall]
3791 *) Update support for ECC-based TLS ciphersuites according to
3792 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
3793 SHA-1 now is only used for "small" curves (where the
3794 representation of a field element takes up to 24 bytes); for
3795 larger curves, the field element resulting from ECDH is directly
3796 used as premaster secret.
3797 [Douglas Stebila (Sun Microsystems Laboratories)]
3799 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
3800 curve secp160r1 to the tests.
3801 [Douglas Stebila (Sun Microsystems Laboratories)]
3803 *) Add the possibility to load symbols globally with DSO.
3804 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
3806 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
3807 control of the error stack.
3810 *) Add support for STORE in ENGINE.
3813 *) Add the STORE type. The intention is to provide a common interface
3814 to certificate and key stores, be they simple file-based stores, or
3815 HSM-type store, or LDAP stores, or...
3816 NOTE: The code is currently UNTESTED and isn't really used anywhere.
3819 *) Add a generic structure called OPENSSL_ITEM. This can be used to
3820 pass a list of arguments to any function as well as provide a way
3821 for a function to pass data back to the caller.
3824 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
3825 works like BUF_strdup() but can be used to duplicate a portion of
3826 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
3830 *) Add the function sk_find_ex() which works like sk_find(), but will
3831 return an index to an element even if an exact match couldn't be
3832 found. The index is guaranteed to point at the element where the
3833 searched-for key would be inserted to preserve sorting order.
3836 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
3837 takes an extra flags argument for optional functionality. Currently,
3838 the following flags are defined:
3840 OBJ_BSEARCH_VALUE_ON_NOMATCH
3841 This one gets OBJ_bsearch_ex() to return a pointer to the first
3842 element where the comparing function returns a negative or zero
3845 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
3846 This one gets OBJ_bsearch_ex() to return a pointer to the first
3847 element where the comparing function returns zero. This is useful
3848 if there are more than one element where the comparing function
3852 *) Make it possible to create self-signed certificates with 'openssl ca'
3853 in such a way that the self-signed certificate becomes part of the
3854 CA database and uses the same mechanisms for serial number generation
3855 as all other certificate signing. The new flag '-selfsign' enables
3856 this functionality. Adapt CA.sh and CA.pl.in.
3859 *) Add functionality to check the public key of a certificate request
3860 against a given private. This is useful to check that a certificate
3861 request can be signed by that key (self-signing).
3864 *) Make it possible to have multiple active certificates with the same
3865 subject in the CA index file. This is done only if the keyword
3866 'unique_subject' is set to 'no' in the main CA section (default
3867 if 'CA_default') of the configuration file. The value is saved
3868 with the database itself in a separate index attribute file,
3869 named like the index file with '.attr' appended to the name.
3872 *) Generate muti valued AVAs using '+' notation in config files for
3876 *) Support for nameConstraints certificate extension.
3879 *) Support for policyConstraints certificate extension.
3882 *) Support for policyMappings certificate extension.
3885 *) Make sure the default DSA_METHOD implementation only uses its
3886 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
3887 and change its own handlers to be NULL so as to remove unnecessary
3888 indirection. This lets alternative implementations fallback to the
3889 default implementation more easily.
3892 *) Support for directoryName in GeneralName related extensions
3896 *) Make it possible to link applications using Makefile.shared.
3897 Make that possible even when linking against static libraries!
3900 *) Support for single pass processing for S/MIME signing. This now
3901 means that S/MIME signing can be done from a pipe, in addition
3902 cleartext signing (multipart/signed type) is effectively streaming
3903 and the signed data does not need to be all held in memory.
3905 This is done with a new flag PKCS7_STREAM. When this flag is set
3906 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
3907 is done after the data is output (and digests calculated) in
3908 SMIME_write_PKCS7().
3911 *) Add full support for -rpath/-R, both in shared libraries and
3912 applications, at least on the platforms where it's known how
3916 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
3917 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
3918 will now compute a table of multiples of the generator that
3919 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
3920 faster (notably in the case of a single point multiplication,
3921 scalar * generator).
3922 [Nils Larsch, Bodo Moeller]
3924 *) IPv6 support for certificate extensions. The various extensions
3925 which use the IP:a.b.c.d can now take IPv6 addresses using the
3926 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
3930 *) Added an ENGINE that implements RSA by performing private key
3931 exponentiations with the GMP library. The conversions to and from
3932 GMP's mpz_t format aren't optimised nor are any montgomery forms
3933 cached, and on x86 it appears OpenSSL's own performance has caught up.
3934 However there are likely to be other architectures where GMP could
3935 provide a boost. This ENGINE is not built in by default, but it can be
3936 specified at Configure time and should be accompanied by the necessary
3937 linker additions, eg;
3938 ./config -DOPENSSL_USE_GMP -lgmp
3941 *) "openssl engine" will not display ENGINE/DSO load failure errors when
3942 testing availability of engines with "-t" - the old behaviour is
3943 produced by increasing the feature's verbosity with "-tt".
3946 *) ECDSA routines: under certain error conditions uninitialized BN objects
3947 could be freed. Solution: make sure initialization is performed early
3948 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
3952 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
3953 and DH_METHOD (eg. by ENGINE implementations) to override the normal
3954 software implementations. For DSA and DH, parameter generation can
3955 also be overriden by providing the appropriate method callbacks.
3958 *) Change the "progress" mechanism used in key-generation and
3959 primality testing to functions that take a new BN_GENCB pointer in
3960 place of callback/argument pairs. The new API functions have "_ex"
3961 postfixes and the older functions are reimplemented as wrappers for
3962 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
3963 declarations of the old functions to help (graceful) attempts to
3964 migrate to the new functions. Also, the new key-generation API
3965 functions operate on a caller-supplied key-structure and return
3966 success/failure rather than returning a key or NULL - this is to
3967 help make "keygen" another member function of RSA_METHOD etc.
3969 Example for using the new callback interface:
3971 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
3975 BN_GENCB_set(&my_cb, my_callback, my_arg);
3977 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
3978 /* For the meaning of a, b in calls to my_callback(), see the
3979 * documentation of the function that calls the callback.
3980 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
3981 * my_callback should return 1 if it wants BN_is_prime_ex()
3982 * to continue, or 0 to stop.
3987 *) Change the ZLIB compression method to be stateful, and make it
3988 available to TLS with the number defined in
3989 draft-ietf-tls-compression-04.txt.
3992 *) Add the ASN.1 structures and functions for CertificatePair, which
3993 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3995 CertificatePair ::= SEQUENCE {
3996 forward [0] Certificate OPTIONAL,
3997 reverse [1] Certificate OPTIONAL,
3998 -- at least one of the pair shall be present -- }
4000 Also implement the PEM functions to read and write certificate
4001 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
4003 This needed to be defined, mostly for the sake of the LDAP
4004 attribute crossCertificatePair, but may prove useful elsewhere as
4008 *) Make it possible to inhibit symlinking of shared libraries in
4009 Makefile.shared, for Cygwin's sake.
4012 *) Extend the BIGNUM API by creating a function
4013 void BN_set_negative(BIGNUM *a, int neg);
4014 and a macro that behave like
4015 int BN_is_negative(const BIGNUM *a);
4017 to avoid the need to access 'a->neg' directly in applications.
4020 *) Implement fast modular reduction for pseudo-Mersenne primes
4021 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
4022 EC_GROUP_new_curve_GFp() will now automatically use this
4024 [Nils Larsch <nla@trustcenter.de>]
4026 *) Add new lock type (CRYPTO_LOCK_BN).
4029 *) Change the ENGINE framework to automatically load engines
4030 dynamically from specific directories unless they could be
4031 found to already be built in or loaded. Move all the
4032 current engines except for the cryptodev one to a new
4034 The engines in engines/ are built as shared libraries if
4035 the "shared" options was given to ./Configure or ./config.
4036 Otherwise, they are inserted in libcrypto.a.
4037 /usr/local/ssl/engines is the default directory for dynamic
4038 engines, but that can be overriden at configure time through
4039 the usual use of --prefix and/or --openssldir, and at run
4040 time with the environment variable OPENSSL_ENGINES.
4041 [Geoff Thorpe and Richard Levitte]
4043 *) Add Makefile.shared, a helper makefile to build shared
4044 libraries. Adapt Makefile.org.
4047 *) Add version info to Win32 DLLs.
4048 [Peter 'Luna' Runestig" <peter@runestig.com>]
4050 *) Add new 'medium level' PKCS#12 API. Certificates and keys
4051 can be added using this API to created arbitrary PKCS#12
4052 files while avoiding the low level API.
4054 New options to PKCS12_create(), key or cert can be NULL and
4055 will then be omitted from the output file. The encryption
4056 algorithm NIDs can be set to -1 for no encryption, the mac
4057 iteration count can be set to 0 to omit the mac.
4059 Enhance pkcs12 utility by making the -nokeys and -nocerts
4060 options work when creating a PKCS#12 file. New option -nomac
4061 to omit the mac, NONE can be set for an encryption algorithm.
4062 New code is modified to use the enhanced PKCS12_create()
4063 instead of the low level API.
4066 *) Extend ASN1 encoder to support indefinite length constructed
4067 encoding. This can output sequences tags and octet strings in
4068 this form. Modify pk7_asn1.c to support indefinite length
4069 encoding. This is experimental and needs additional code to
4070 be useful, such as an ASN1 bio and some enhanced streaming
4073 Extend template encode functionality so that tagging is passed
4074 down to the template encoder.
4077 *) Let 'openssl req' fail if an argument to '-newkey' is not
4078 recognized instead of using RSA as a default.
4081 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
4082 As these are not official, they are not included in "ALL";
4083 the "ECCdraft" ciphersuite group alias can be used to select them.
4084 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
4086 *) Add ECDH engine support.
4087 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
4089 *) Add ECDH in new directory crypto/ecdh/.
4090 [Douglas Stebila (Sun Microsystems Laboratories)]
4092 *) Let BN_rand_range() abort with an error after 100 iterations
4093 without success (which indicates a broken PRNG).
4096 *) Change BN_mod_sqrt() so that it verifies that the input value
4097 is really the square of the return value. (Previously,
4098 BN_mod_sqrt would show GIGO behaviour.)
4101 *) Add named elliptic curves over binary fields from X9.62, SECG,
4102 and WAP/WTLS; add OIDs that were still missing.
4104 [Sheueling Chang Shantz and Douglas Stebila
4105 (Sun Microsystems Laboratories)]
4107 *) Extend the EC library for elliptic curves over binary fields
4108 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
4111 EC_GF2m_simple_method
4115 EC_GROUP_new_curve_GF2m
4116 EC_GROUP_set_curve_GF2m
4117 EC_GROUP_get_curve_GF2m
4118 EC_POINT_set_affine_coordinates_GF2m
4119 EC_POINT_get_affine_coordinates_GF2m
4120 EC_POINT_set_compressed_coordinates_GF2m
4122 Point compression for binary fields is disabled by default for
4123 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
4126 As binary polynomials are represented as BIGNUMs, various members
4127 of the EC_GROUP and EC_POINT data structures can be shared
4128 between the implementations for prime fields and binary fields;
4129 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
4130 are essentially identical to their ..._GFp counterparts.
4131 (For simplicity, the '..._GFp' prefix has been dropped from
4132 various internal method names.)
4134 An internal 'field_div' method (similar to 'field_mul' and
4135 'field_sqr') has been added; this is used only for binary fields.
4137 [Sheueling Chang Shantz and Douglas Stebila
4138 (Sun Microsystems Laboratories)]
4140 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
4141 through methods ('mul', 'precompute_mult').
4143 The generic implementations (now internally called 'ec_wNAF_mul'
4144 and 'ec_wNAF_precomputed_mult') remain the default if these
4145 methods are undefined.
4147 [Sheueling Chang Shantz and Douglas Stebila
4148 (Sun Microsystems Laboratories)]
4150 *) New function EC_GROUP_get_degree, which is defined through
4151 EC_METHOD. For curves over prime fields, this returns the bit
4152 length of the modulus.
4154 [Sheueling Chang Shantz and Douglas Stebila
4155 (Sun Microsystems Laboratories)]
4157 *) New functions EC_GROUP_dup, EC_POINT_dup.
4158 (These simply call ..._new and ..._copy).
4160 [Sheueling Chang Shantz and Douglas Stebila
4161 (Sun Microsystems Laboratories)]
4163 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
4164 Polynomials are represented as BIGNUMs (where the sign bit is not
4165 used) in the following functions [macros]:
4168 BN_GF2m_sub [= BN_GF2m_add]
4169 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
4170 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
4171 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
4173 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
4174 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
4175 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
4176 BN_GF2m_cmp [= BN_ucmp]
4178 (Note that only the 'mod' functions are actually for fields GF(2^m).
4179 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
4181 For some functions, an the irreducible polynomial defining a
4182 field can be given as an 'unsigned int[]' with strictly
4183 decreasing elements giving the indices of those bits that are set;
4184 i.e., p[] represents the polynomial
4185 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
4187 p[0] > p[1] > ... > p[k] = 0.
4188 This applies to the following functions:
4193 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
4194 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
4196 BN_GF2m_mod_sqrt_arr
4197 BN_GF2m_mod_solve_quad_arr
4201 Conversion can be performed by the following functions:
4206 bntest.c has additional tests for binary polynomial arithmetic.
4208 Two implementations for BN_GF2m_mod_div() are available.
4209 The default algorithm simply uses BN_GF2m_mod_inv() and
4210 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
4211 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
4212 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
4214 [Sheueling Chang Shantz and Douglas Stebila
4215 (Sun Microsystems Laboratories)]
4217 *) Add new error code 'ERR_R_DISABLED' that can be used when some
4218 functionality is disabled at compile-time.
4219 [Douglas Stebila <douglas.stebila@sun.com>]
4221 *) Change default behaviour of 'openssl asn1parse' so that more
4222 information is visible when viewing, e.g., a certificate:
4224 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
4225 mode the content of non-printable OCTET STRINGs is output in a
4226 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
4227 avoid the appearance of a printable string.
4228 [Nils Larsch <nla@trustcenter.de>]
4230 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
4232 EC_GROUP_set_asn1_flag()
4233 EC_GROUP_get_asn1_flag()
4234 EC_GROUP_set_point_conversion_form()
4235 EC_GROUP_get_point_conversion_form()
4236 These control ASN1 encoding details:
4237 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
4238 has been set to OPENSSL_EC_NAMED_CURVE.
4239 - Points are encoded in uncompressed form by default; options for
4240 asn1_for are as for point2oct, namely
4241 POINT_CONVERSION_COMPRESSED
4242 POINT_CONVERSION_UNCOMPRESSED
4243 POINT_CONVERSION_HYBRID
4245 Also add 'seed' and 'seed_len' members to EC_GROUP with access
4248 EC_GROUP_get0_seed()
4249 EC_GROUP_get_seed_len()
4250 This is used only for ASN1 purposes (so far).
4251 [Nils Larsch <nla@trustcenter.de>]
4253 *) Add 'field_type' member to EC_METHOD, which holds the NID
4254 of the appropriate field type OID. The new function
4255 EC_METHOD_get_field_type() returns this value.
4256 [Nils Larsch <nla@trustcenter.de>]
4261 EC_POINT_point2hex()
4262 EC_POINT_hex2point()
4263 providing useful interfaces to EC_POINT_point2oct() and
4264 EC_POINT_oct2point().
4265 [Nils Larsch <nla@trustcenter.de>]
4267 *) Change internals of the EC library so that the functions
4268 EC_GROUP_set_generator()
4269 EC_GROUP_get_generator()
4270 EC_GROUP_get_order()
4271 EC_GROUP_get_cofactor()
4272 are implemented directly in crypto/ec/ec_lib.c and not dispatched
4273 to methods, which would lead to unnecessary code duplication when
4274 adding different types of curves.
4275 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
4277 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
4278 arithmetic, and such that modified wNAFs are generated
4279 (which avoid length expansion in many cases).
4282 *) Add a function EC_GROUP_check_discriminant() (defined via
4283 EC_METHOD) that verifies that the curve discriminant is non-zero.
4285 Add a function EC_GROUP_check() that makes some sanity tests
4286 on a EC_GROUP, its generator and order. This includes
4287 EC_GROUP_check_discriminant().
4288 [Nils Larsch <nla@trustcenter.de>]
4290 *) Add ECDSA in new directory crypto/ecdsa/.
4292 Add applications 'openssl ecparam' and 'openssl ecdsa'
4293 (these are based on 'openssl dsaparam' and 'openssl dsa').
4295 ECDSA support is also included in various other files across the
4296 library. Most notably,
4297 - 'openssl req' now has a '-newkey ecdsa:file' option;
4298 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
4299 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
4300 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
4301 them suitable for ECDSA where domain parameters must be
4302 extracted before the specific public key;
4303 - ECDSA engine support has been added.
4304 [Nils Larsch <nla@trustcenter.de>]
4306 *) Include some named elliptic curves, and add OIDs from X9.62,
4307 SECG, and WAP/WTLS. Each curve can be obtained from the new
4309 EC_GROUP_new_by_curve_name(),
4310 and the list of available named curves can be obtained with
4311 EC_get_builtin_curves().
4312 Also add a 'curve_name' member to EC_GROUP objects, which can be
4314 EC_GROUP_set_curve_name()
4315 EC_GROUP_get_curve_name()
4316 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
4318 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
4319 was actually never needed) and in BN_mul(). The removal in BN_mul()
4320 required a small change in bn_mul_part_recursive() and the addition
4321 of the functions bn_cmp_part_words(), bn_sub_part_words() and
4322 bn_add_part_words(), which do the same thing as bn_cmp_words(),
4323 bn_sub_words() and bn_add_words() except they take arrays with
4327 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
4329 *) Cleanse PEM buffers before freeing them since they may contain
4331 [Benjamin Bennett <ben@psc.edu>]
4333 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
4334 a ciphersuite string such as "DEFAULT:RSA" cannot enable
4335 authentication-only ciphersuites.
4338 *) Since AES128 and AES256 share a single mask bit in the logic of
4339 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
4340 kludge to work properly if AES128 is available and AES256 isn't.
4343 *) Expand security boundary to match 1.1.1 module.
4346 *) Remove redundant features: hash file source, editing of test vectors
4347 modify fipsld to use external fips_premain.c signature.
4350 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
4351 run algorithm test programs.
4354 *) Make algorithm test programs more tolerant of whitespace.
4357 *) Have SSL/TLS server implementation tolerate "mismatched" record
4358 protocol version while receiving ClientHello even if the
4359 ClientHello is fragmented. (The server can't insist on the
4360 particular protocol version it has chosen before the ServerHello
4361 message has informed the client about his choice.)
4364 *) Load error codes if they are not already present instead of using a
4365 static variable. This allows them to be cleanly unloaded and reloaded.
4368 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
4370 *) Introduce limits to prevent malicious keys being able to
4371 cause a denial of service. (CVE-2006-2940)
4372 [Steve Henson, Bodo Moeller]
4374 *) Fix ASN.1 parsing of certain invalid structures that can result
4375 in a denial of service. (CVE-2006-2937) [Steve Henson]
4377 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
4378 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
4380 *) Fix SSL client code which could crash if connecting to a
4381 malicious SSLv2 server. (CVE-2006-4343)
4382 [Tavis Ormandy and Will Drewry, Google Security Team]
4384 *) Change ciphersuite string processing so that an explicit
4385 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
4386 will no longer include "AES128-SHA"), and any other similar
4387 ciphersuite (same bitmap) from *other* protocol versions (so that
4388 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
4389 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
4390 changes from 0.9.8b and 0.9.8d.
4393 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
4395 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
4396 (CVE-2006-4339) [Ben Laurie and Google Security Team]
4398 *) Change the Unix randomness entropy gathering to use poll() when
4399 possible instead of select(), since the latter has some
4400 undesirable limitations.
4401 [Darryl Miles via Richard Levitte and Bodo Moeller]
4403 *) Disable rogue ciphersuites:
4405 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
4406 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4407 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
4409 The latter two were purportedly from
4410 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4413 Also deactive the remaining ciphersuites from
4414 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4415 unofficial, and the ID has long expired.
4418 *) Fix RSA blinding Heisenbug (problems sometimes occured on
4419 dual-core machines) and other potential thread-safety issues.
4422 Changes between 0.9.7i and 0.9.7j [04 May 2006]
4424 *) Adapt fipsld and the build system to link against the validated FIPS
4425 module in FIPS mode.
4428 *) Fixes for VC++ 2005 build under Windows.
4431 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
4432 from a Windows bash shell such as MSYS. It is autodetected from the
4433 "config" script when run from a VC++ environment. Modify standard VC++
4434 build to use fipscanister.o from the GNU make build.
4437 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
4439 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
4440 The value now differs depending on if you build for FIPS or not.
4441 BEWARE! A program linked with a shared FIPSed libcrypto can't be
4442 safely run with a non-FIPSed libcrypto, as it may crash because of
4443 the difference induced by this change.
4446 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
4448 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4449 (part of SSL_OP_ALL). This option used to disable the
4450 countermeasure against man-in-the-middle protocol-version
4451 rollback in the SSL 2.0 server implementation, which is a bad
4452 idea. (CVE-2005-2969)
4454 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4455 for Information Security, National Institute of Advanced Industrial
4456 Science and Technology [AIST], Japan)]
4458 *) Minimal support for X9.31 signatures and PSS padding modes. This is
4459 mainly for FIPS compliance and not fully integrated at this stage.
4462 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
4463 the exponentiation using a fixed-length exponent. (Otherwise,
4464 the information leaked through timing could expose the secret key
4465 after many signatures; cf. Bleichenbacher's attack on DSA with
4469 *) Make a new fixed-window mod_exp implementation the default for
4470 RSA, DSA, and DH private-key operations so that the sequence of
4471 squares and multiplies and the memory access pattern are
4472 independent of the particular secret key. This will mitigate
4473 cache-timing and potential related attacks.
4475 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
4476 and this is automatically used by BN_mod_exp_mont() if the new flag
4477 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
4478 will use this BN flag for private exponents unless the flag
4479 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
4480 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
4482 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
4484 *) Change the client implementation for SSLv23_method() and
4485 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
4486 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
4487 (Previously, the SSL 2.0 backwards compatible Client Hello
4488 message format would be used even with SSL_OP_NO_SSLv2.)
4491 *) Add support for smime-type MIME parameter in S/MIME messages which some
4495 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
4496 a threadsafe manner. Modify rsa code to use new function and add calls
4497 to dsa and dh code (which had race conditions before).
4500 *) Include the fixed error library code in the C error file definitions
4501 instead of fixing them up at runtime. This keeps the error code
4502 structures constant.
4505 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
4507 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
4510 *) Fixes for newer kerberos headers. NB: the casts are needed because
4511 the 'length' field is signed on one version and unsigned on another
4512 with no (?) obvious way to tell the difference, without these VC++
4513 complains. Also the "definition" of FAR (blank) is no longer included
4514 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
4515 some needed definitions.
4518 *) Undo Cygwin change.
4521 *) Added support for proxy certificates according to RFC 3820.
4522 Because they may be a security thread to unaware applications,
4523 they must be explicitely allowed in run-time. See
4524 docs/HOWTO/proxy_certificates.txt for further information.
4527 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
4529 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
4530 server and client random values. Previously
4531 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
4532 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
4534 This change has negligible security impact because:
4536 1. Server and client random values still have 24 bytes of pseudo random
4539 2. Server and client random values are sent in the clear in the initial
4542 3. The master secret is derived using the premaster secret (48 bytes in
4543 size for static RSA ciphersuites) as well as client server and random
4546 The OpenSSL team would like to thank the UK NISCC for bringing this issue
4549 [Stephen Henson, reported by UK NISCC]
4551 *) Use Windows randomness collection on Cygwin.
4554 *) Fix hang in EGD/PRNGD query when communication socket is closed
4555 prematurely by EGD/PRNGD.
4556 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
4558 *) Prompt for pass phrases when appropriate for PKCS12 input format.
4561 *) Back-port of selected performance improvements from development
4562 branch, as well as improved support for PowerPC platforms.
4565 *) Add lots of checks for memory allocation failure, error codes to indicate
4566 failure and freeing up memory if a failure occurs.
4567 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
4569 *) Add new -passin argument to dgst.
4572 *) Perform some character comparisons of different types in X509_NAME_cmp:
4573 this is needed for some certificates that reencode DNs into UTF8Strings
4574 (in violation of RFC3280) and can't or wont issue name rollover
4578 *) Make an explicit check during certificate validation to see that
4579 the CA setting in each certificate on the chain is correct. As a
4580 side effect always do the following basic checks on extensions,
4581 not just when there's an associated purpose to the check:
4583 - if there is an unhandled critical extension (unless the user
4584 has chosen to ignore this fault)
4585 - if the path length has been exceeded (if one is set at all)
4586 - that certain extensions fit the associated purpose (if one has
4590 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
4592 *) Avoid a race condition when CRLs are checked in a multi threaded
4593 environment. This would happen due to the reordering of the revoked
4594 entries during signature checking and serial number lookup. Now the
4595 encoding is cached and the serial number sort performed under a lock.
4596 Add new STACK function sk_is_sorted().
4599 *) Add Delta CRL to the extension code.
4602 *) Various fixes to s3_pkt.c so alerts are sent properly.
4603 [David Holmes <d.holmes@f5.com>]
4605 *) Reduce the chances of duplicate issuer name and serial numbers (in
4606 violation of RFC3280) using the OpenSSL certificate creation utilities.
4607 This is done by creating a random 64 bit value for the initial serial
4608 number when a serial number file is created or when a self signed
4609 certificate is created using 'openssl req -x509'. The initial serial
4610 number file is created using 'openssl x509 -next_serial' in CA.pl
4611 rather than being initialized to 1.
4614 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
4616 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4617 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4618 [Joe Orton, Steve Henson]
4620 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
4622 [Joe Orton, Steve Henson]
4624 *) Make it possible to have multiple active certificates with the same
4625 subject in the CA index file. This is done only if the keyword
4626 'unique_subject' is set to 'no' in the main CA section (default
4627 if 'CA_default') of the configuration file. The value is saved
4628 with the database itself in a separate index attribute file,
4629 named like the index file with '.attr' appended to the name.
4632 *) X509 verify fixes. Disable broken certificate workarounds when
4633 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
4634 keyUsage extension present. Don't accept CRLs with unhandled critical
4635 extensions: since verify currently doesn't process CRL extensions this
4636 rejects a CRL with *any* critical extensions. Add new verify error codes
4640 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
4641 A clarification of RFC2560 will require the use of OCTET STRINGs and
4642 some implementations cannot handle the current raw format. Since OpenSSL
4643 copies and compares OCSP nonces as opaque blobs without any attempt at
4644 parsing them this should not create any compatibility issues.
4647 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
4648 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
4649 this HMAC (and other) operations are several times slower than OpenSSL
4653 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
4654 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4656 *) Use the correct content when signing type "other".
4659 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
4661 *) Fix various bugs revealed by running the NISCC test suite:
4663 Stop out of bounds reads in the ASN1 code when presented with
4664 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4666 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
4668 If verify callback ignores invalid public key errors don't try to check
4669 certificate signature with the NULL public key.
4673 *) New -ignore_err option in ocsp application to stop the server
4674 exiting on the first error in a request.
4677 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4678 if the server requested one: as stated in TLS 1.0 and SSL 3.0
4682 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
4683 extra data after the compression methods not only for TLS 1.0
4684 but also for SSL 3.0 (as required by the specification).
4685 [Bodo Moeller; problem pointed out by Matthias Loepfe]
4687 *) Change X509_certificate_type() to mark the key as exported/exportable
4688 when it's 512 *bits* long, not 512 bytes.
4691 *) Change AES_cbc_encrypt() so it outputs exact multiple of
4692 blocks during encryption.
4695 *) Various fixes to base64 BIO and non blocking I/O. On write
4696 flushes were not handled properly if the BIO retried. On read
4697 data was not being buffered properly and had various logic bugs.
4698 This also affects blocking I/O when the data being decoded is a
4702 *) Various S/MIME bugfixes and compatibility changes:
4703 output correct application/pkcs7 MIME type if
4704 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
4705 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
4706 of files as .eml work). Correctly handle very long lines in MIME
4710 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
4712 *) Countermeasure against the Klima-Pokorny-Rosa extension of
4713 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
4714 a protocol version number mismatch like a decryption error
4715 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
4718 *) Turn on RSA blinding by default in the default implementation
4719 to avoid a timing attack. Applications that don't want it can call
4720 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
4721 They would be ill-advised to do so in most cases.
4722 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
4724 *) Change RSA blinding code so that it works when the PRNG is not
4725 seeded (in this case, the secret RSA exponent is abused as
4726 an unpredictable seed -- if it is not unpredictable, there
4727 is no point in blinding anyway). Make RSA blinding thread-safe
4728 by remembering the creator's thread ID in rsa->blinding and
4729 having all other threads use local one-time blinding factors
4730 (this requires more computation than sharing rsa->blinding, but
4731 avoids excessive locking; and if an RSA object is not shared
4732 between threads, blinding will still be very fast).
4735 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
4736 ENGINE as defaults for all supported algorithms irrespective of
4737 the 'flags' parameter. 'flags' is now honoured, so applications
4738 should make sure they are passing it correctly.
4741 *) Target "mingw" now allows native Windows code to be generated in
4742 the Cygwin environment as well as with the MinGW compiler.
4745 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
4747 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
4748 via timing by performing a MAC computation even if incorrect
4749 block cipher padding has been found. This is a countermeasure
4750 against active attacks where the attacker has to distinguish
4751 between bad padding and a MAC verification error. (CVE-2003-0078)
4753 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
4754 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
4755 Martin Vuagnoux (EPFL, Ilion)]
4757 *) Make the no-err option work as intended. The intention with no-err
4758 is not to have the whole error stack handling routines removed from
4759 libcrypto, it's only intended to remove all the function name and
4760 reason texts, thereby removing some of the footprint that may not
4761 be interesting if those errors aren't displayed anyway.
4763 NOTE: it's still possible for any application or module to have it's
4764 own set of error texts inserted. The routines are there, just not
4765 used by default when no-err is given.
4768 *) Add support for FreeBSD on IA64.
4769 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
4771 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
4772 Kerberos function mit_des_cbc_cksum(). Before this change,
4773 the value returned by DES_cbc_cksum() was like the one from
4774 mit_des_cbc_cksum(), except the bytes were swapped.
4775 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
4777 *) Allow an application to disable the automatic SSL chain building.
4778 Before this a rather primitive chain build was always performed in
4779 ssl3_output_cert_chain(): an application had no way to send the
4780 correct chain if the automatic operation produced an incorrect result.
4782 Now the chain builder is disabled if either:
4784 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
4786 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
4788 The reasoning behind this is that an application would not want the
4789 auto chain building to take place if extra chain certificates are
4790 present and it might also want a means of sending no additional
4791 certificates (for example the chain has two certificates and the
4795 *) Add the possibility to build without the ENGINE framework.
4796 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
4798 *) Under Win32 gmtime() can return NULL: check return value in
4799 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
4802 *) DSA routines: under certain error conditions uninitialized BN objects
4803 could be freed. Solution: make sure initialization is performed early
4804 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
4805 Nils Larsch <nla@trustcenter.de> via PR#459)
4808 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
4809 checked on reconnect on the client side, therefore session resumption
4810 could still fail with a "ssl session id is different" error. This
4811 behaviour is masked when SSL_OP_ALL is used due to
4812 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
4813 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
4814 followup to PR #377.
4817 *) IA-32 assembler support enhancements: unified ELF targets, support
4818 for SCO/Caldera platforms, fix for Cygwin shared build.
4821 *) Add support for FreeBSD on sparc64. As a consequence, support for
4822 FreeBSD on non-x86 processors is separate from x86 processors on
4823 the config script, much like the NetBSD support.
4824 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
4826 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
4828 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
4831 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
4832 code (06) was taken as the first octet of the session ID and the last
4833 octet was ignored consequently. As a result SSLv2 client side session
4834 caching could not have worked due to the session ID mismatch between
4836 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
4840 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
4841 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
4845 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
4846 seems that in spite of existing for more than a year, many application
4847 author have done nothing to provide the necessary callbacks, which
4848 means that this particular engine will not work properly anywhere.
4849 This is a very unfortunate situation which forces us, in the name
4850 of usability, to give the hw_ncipher.c a static lock, which is part
4852 NOTE: This is for the 0.9.7 series ONLY. This hack will never
4853 appear in 0.9.8 or later. We EXPECT application authors to have
4854 dealt properly with this when 0.9.8 is released (unless we actually
4855 make such changes in the libcrypto locking code that changes will
4856 have to be made anyway).
4859 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
4860 octets have been read, EOF or an error occurs. Without this change
4861 some truncated ASN1 structures will not produce an error.
4864 *) Disable Heimdal support, since it hasn't been fully implemented.
4865 Still give the possibility to force the use of Heimdal, but with
4866 warnings and a request that patches get sent to openssl-dev.
4869 *) Add the VC-CE target, introduce the WINCE sysname, and add
4870 INSTALL.WCE and appropriate conditionals to make it build.
4871 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
4873 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
4874 cygssl-x.y.z.dll, where x, y and z are the major, minor and
4875 edit numbers of the version.
4876 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
4878 *) Introduce safe string copy and catenation functions
4879 (BUF_strlcpy() and BUF_strlcat()).
4880 [Ben Laurie (CHATS) and Richard Levitte]
4882 *) Avoid using fixed-size buffers for one-line DNs.
4883 [Ben Laurie (CHATS)]
4885 *) Add BUF_MEM_grow_clean() to avoid information leakage when
4886 resizing buffers containing secrets, and use where appropriate.
4887 [Ben Laurie (CHATS)]
4889 *) Avoid using fixed size buffers for configuration file location.
4890 [Ben Laurie (CHATS)]
4892 *) Avoid filename truncation for various CA files.
4893 [Ben Laurie (CHATS)]
4895 *) Use sizeof in preference to magic numbers.
4896 [Ben Laurie (CHATS)]
4898 *) Avoid filename truncation in cert requests.
4899 [Ben Laurie (CHATS)]
4901 *) Add assertions to check for (supposedly impossible) buffer
4903 [Ben Laurie (CHATS)]
4905 *) Don't cache truncated DNS entries in the local cache (this could
4906 potentially lead to a spoofing attack).
4907 [Ben Laurie (CHATS)]
4909 *) Fix various buffers to be large enough for hex/decimal
4910 representations in a platform independent manner.
4911 [Ben Laurie (CHATS)]
4913 *) Add CRYPTO_realloc_clean() to avoid information leakage when
4914 resizing buffers containing secrets, and use where appropriate.
4915 [Ben Laurie (CHATS)]
4917 *) Add BIO_indent() to avoid much slightly worrying code to do
4919 [Ben Laurie (CHATS)]
4921 *) Convert sprintf()/BIO_puts() to BIO_printf().
4922 [Ben Laurie (CHATS)]
4924 *) buffer_gets() could terminate with the buffer only half
4926 [Ben Laurie (CHATS)]
4928 *) Add assertions to prevent user-supplied crypto functions from
4929 overflowing internal buffers by having large block sizes, etc.
4930 [Ben Laurie (CHATS)]
4932 *) New OPENSSL_assert() macro (similar to assert(), but enabled
4934 [Ben Laurie (CHATS)]
4936 *) Eliminate unused copy of key in RC4.
4937 [Ben Laurie (CHATS)]
4939 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
4940 [Ben Laurie (CHATS)]
4942 *) Fix off-by-one error in EGD path.
4943 [Ben Laurie (CHATS)]
4945 *) If RANDFILE path is too long, ignore instead of truncating.
4946 [Ben Laurie (CHATS)]
4948 *) Eliminate unused and incorrectly sized X.509 structure
4950 [Ben Laurie (CHATS)]
4952 *) Eliminate unused and dangerous function knumber().
4953 [Ben Laurie (CHATS)]
4955 *) Eliminate unused and dangerous structure, KSSL_ERR.
4956 [Ben Laurie (CHATS)]
4958 *) Protect against overlong session ID context length in an encoded
4959 session object. Since these are local, this does not appear to be
4961 [Ben Laurie (CHATS)]
4963 *) Change from security patch (see 0.9.6e below) that did not affect
4964 the 0.9.6 release series:
4966 Remote buffer overflow in SSL3 protocol - an attacker could
4967 supply an oversized master key in Kerberos-enabled versions.
4969 [Ben Laurie (CHATS)]
4971 *) Change the SSL kerb5 codes to match RFC 2712.
4974 *) Make -nameopt work fully for req and add -reqopt switch.
4975 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
4977 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
4978 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
4980 *) Make sure tests can be performed even if the corresponding algorithms
4981 have been removed entirely. This was also the last step to make
4982 OpenSSL compilable with DJGPP under all reasonable conditions.
4983 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
4985 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
4986 to allow version independent disabling of normally unselected ciphers,
4987 which may be activated as a side-effect of selecting a single cipher.
4989 (E.g., cipher list string "RSA" enables ciphersuites that are left
4990 out of "ALL" because they do not provide symmetric encryption.
4991 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
4992 [Lutz Jaenicke, Bodo Moeller]
4994 *) Add appropriate support for separate platform-dependent build
4995 directories. The recommended way to make a platform-dependent
4996 build directory is the following (tested on Linux), maybe with
4999 # Place yourself outside of the OpenSSL source tree. In
5000 # this example, the environment variable OPENSSL_SOURCE
5001 # is assumed to contain the absolute OpenSSL source directory.
5002 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
5003 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
5004 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
5005 mkdir -p `dirname $F`
5006 ln -s $OPENSSL_SOURCE/$F $F
5009 To be absolutely sure not to disturb the source tree, a "make clean"
5010 is a good thing. If it isn't successfull, don't worry about it,
5011 it probably means the source directory is very clean.
5014 *) Make sure any ENGINE control commands make local copies of string
5015 pointers passed to them whenever necessary. Otherwise it is possible
5016 the caller may have overwritten (or deallocated) the original string
5017 data when a later ENGINE operation tries to use the stored values.
5018 [Götz Babin-Ebell <babinebell@trustcenter.de>]
5020 *) Improve diagnostics in file reading and command-line digests.
5021 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
5023 *) Add AES modes CFB and OFB to the object database. Correct an
5024 error in AES-CFB decryption.
5027 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
5028 allows existing EVP_CIPHER_CTX structures to be reused after
5029 calling EVP_*Final(). This behaviour is used by encryption
5030 BIOs and some applications. This has the side effect that
5031 applications must explicitly clean up cipher contexts with
5032 EVP_CIPHER_CTX_cleanup() or they will leak memory.
5035 *) Check the values of dna and dnb in bn_mul_recursive before calling
5036 bn_mul_comba (a non zero value means the a or b arrays do not contain
5037 n2 elements) and fallback to bn_mul_normal if either is not zero.
5040 *) Fix escaping of non-ASCII characters when using the -subj option
5041 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
5044 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
5045 form for "surname", serialNumber has no short form.
5046 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
5047 therefore remove "mail" short name for "internet 7".
5048 The OID for unique identifiers in X509 certificates is
5049 x500UniqueIdentifier, not uniqueIdentifier.
5050 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
5053 *) Add an "init" command to the ENGINE config module and auto initialize
5054 ENGINEs. Without any "init" command the ENGINE will be initialized
5055 after all ctrl commands have been executed on it. If init=1 the
5056 ENGINE is initailized at that point (ctrls before that point are run
5057 on the uninitialized ENGINE and after on the initialized one). If
5058 init=0 then the ENGINE will not be iniatialized at all.
5061 *) Fix the 'app_verify_callback' interface so that the user-defined
5062 argument is actually passed to the callback: In the
5063 SSL_CTX_set_cert_verify_callback() prototype, the callback
5064 declaration has been changed from
5067 int (*cb)(X509_STORE_CTX *,void *);
5068 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
5069 i=s->ctx->app_verify_callback(&ctx)
5070 has been changed into
5071 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
5073 To update applications using SSL_CTX_set_cert_verify_callback(),
5074 a dummy argument can be added to their callback functions.
5075 [D. K. Smetters <smetters@parc.xerox.com>]
5077 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
5078 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
5080 *) Add and OPENSSL_LOAD_CONF define which will cause
5081 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
5082 This allows older applications to transparently support certain
5083 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
5084 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
5085 load the config file and OPENSSL_add_all_algorithms_conf() which will
5086 always load it have also been added.
5089 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
5090 Adjust NIDs and EVP layer.
5091 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
5093 *) Config modules support in openssl utility.
5095 Most commands now load modules from the config file,
5096 though in a few (such as version) this isn't done
5097 because it couldn't be used for anything.
5099 In the case of ca and req the config file used is
5100 the same as the utility itself: that is the -config
5101 command line option can be used to specify an
5105 *) Move default behaviour from OPENSSL_config(). If appname is NULL
5106 use "openssl_conf" if filename is NULL use default openssl config file.
5109 *) Add an argument to OPENSSL_config() to allow the use of an alternative
5110 config section name. Add a new flag to tolerate a missing config file
5111 and move code to CONF_modules_load_file().
5114 *) Support for crypto accelerator cards from Accelerated Encryption
5115 Processing, www.aep.ie. (Use engine 'aep')
5116 The support was copied from 0.9.6c [engine] and adapted/corrected
5117 to work with the new engine framework.
5118 [AEP Inc. and Richard Levitte]
5120 *) Support for SureWare crypto accelerator cards from Baltimore
5121 Technologies. (Use engine 'sureware')
5122 The support was copied from 0.9.6c [engine] and adapted
5123 to work with the new engine framework.
5126 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
5127 make the newer ENGINE framework commands for the CHIL engine work.
5128 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
5130 *) Make it possible to produce shared libraries on ReliantUNIX.
5131 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
5133 *) Add the configuration target debug-linux-ppro.
5134 Make 'openssl rsa' use the general key loading routines
5135 implemented in apps.c, and make those routines able to
5136 handle the key format FORMAT_NETSCAPE and the variant
5138 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5140 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
5141 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5143 *) Add -keyform to rsautl, and document -engine.
5144 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
5146 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
5147 BIO_R_NO_SUCH_FILE error code rather than the generic
5148 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
5151 *) Add new functions
5153 ERR_peek_last_error_line
5154 ERR_peek_last_error_line_data.
5155 These are similar to
5158 ERR_peek_error_line_data,
5159 but report on the latest error recorded rather than the first one
5160 still in the error queue.
5161 [Ben Laurie, Bodo Moeller]
5163 *) default_algorithms option in ENGINE config module. This allows things
5165 default_algorithms = ALL
5166 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
5169 *) Preliminary ENGINE config module.
5172 *) New experimental application configuration code.
5175 *) Change the AES code to follow the same name structure as all other
5176 symmetric ciphers, and behave the same way. Move everything to
5177 the directory crypto/aes, thereby obsoleting crypto/rijndael.
5178 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
5180 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
5181 [Ben Laurie and Theo de Raadt]
5183 *) Add option to output public keys in req command.
5184 [Massimiliano Pala madwolf@openca.org]
5186 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
5187 (up to about 10% better than before for P-192 and P-224).
5190 *) New functions/macros
5192 SSL_CTX_set_msg_callback(ctx, cb)
5193 SSL_CTX_set_msg_callback_arg(ctx, arg)
5194 SSL_set_msg_callback(ssl, cb)
5195 SSL_set_msg_callback_arg(ssl, arg)
5197 to request calling a callback function
5199 void cb(int write_p, int version, int content_type,
5200 const void *buf, size_t len, SSL *ssl, void *arg)
5202 whenever a protocol message has been completely received
5203 (write_p == 0) or sent (write_p == 1). Here 'version' is the
5204 protocol version according to which the SSL library interprets
5205 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
5206 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
5207 the content type as defined in the SSL 3.0/TLS 1.0 protocol
5208 specification (change_cipher_spec(20), alert(21), handshake(22)).
5209 'buf' and 'len' point to the actual message, 'ssl' to the
5210 SSL object, and 'arg' is the application-defined value set by
5211 SSL[_CTX]_set_msg_callback_arg().
5213 'openssl s_client' and 'openssl s_server' have new '-msg' options
5214 to enable a callback that displays all protocol messages.
5217 *) Change the shared library support so shared libraries are built as
5218 soon as the corresponding static library is finished, and thereby get
5219 openssl and the test programs linked against the shared library.
5220 This still only happens when the keyword "shard" has been given to
5221 the configuration scripts.
5223 NOTE: shared library support is still an experimental thing, and
5224 backward binary compatibility is still not guaranteed.
5225 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
5227 *) Add support for Subject Information Access extension.
5228 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
5230 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
5231 additional bytes when new memory had to be allocated, not just
5232 when reusing an existing buffer.
5235 *) New command line and configuration option 'utf8' for the req command.
5236 This allows field values to be specified as UTF8 strings.
5239 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
5240 runs for the former and machine-readable output for the latter.
5243 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
5244 of the e-mail address in the DN (i.e., it will go into a certificate
5245 extension only). The new configuration file option 'email_in_dn = no'
5246 has the same effect.
5247 [Massimiliano Pala madwolf@openca.org]
5249 *) Change all functions with names starting with des_ to be starting
5250 with DES_ instead. Add wrappers that are compatible with libdes,
5251 but are named _ossl_old_des_*. Finally, add macros that map the
5252 des_* symbols to the corresponding _ossl_old_des_* if libdes
5253 compatibility is desired. If OpenSSL 0.9.6c compatibility is
5254 desired, the des_* symbols will be mapped to DES_*, with one
5257 Since we provide two compatibility mappings, the user needs to
5258 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
5259 compatibility is desired. The default (i.e., when that macro
5260 isn't defined) is OpenSSL 0.9.6c compatibility.
5262 There are also macros that enable and disable the support of old
5263 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
5264 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
5265 are defined, the default will apply: to support the old des routines.
5267 In either case, one must include openssl/des.h to get the correct
5268 definitions. Do not try to just include openssl/des_old.h, that
5271 NOTE: This is a major break of an old API into a new one. Software
5272 authors are encouraged to switch to the DES_ style functions. Some
5273 time in the future, des_old.h and the libdes compatibility functions
5274 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
5275 default), and then completely removed.
5278 *) Test for certificates which contain unsupported critical extensions.
5279 If such a certificate is found during a verify operation it is
5280 rejected by default: this behaviour can be overridden by either
5281 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
5282 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
5283 X509_supported_extension() has also been added which returns 1 if a
5284 particular extension is supported.
5287 *) Modify the behaviour of EVP cipher functions in similar way to digests
5288 to retain compatibility with existing code.
5291 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
5292 compatibility with existing code. In particular the 'ctx' parameter does
5293 not have to be to be initialized before the call to EVP_DigestInit() and
5294 it is tidied up after a call to EVP_DigestFinal(). New function
5295 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
5296 EVP_MD_CTX_copy() changed to not require the destination to be
5297 initialized valid and new function EVP_MD_CTX_copy_ex() added which
5298 requires the destination to be valid.
5300 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
5301 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
5304 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
5305 so that complete 'Handshake' protocol structures are kept in memory
5306 instead of overwriting 'msg_type' and 'length' with 'body' data.
5309 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
5310 [Massimo Santin via Richard Levitte]
5312 *) Major restructuring to the underlying ENGINE code. This includes
5313 reduction of linker bloat, separation of pure "ENGINE" manipulation
5314 (initialisation, etc) from functionality dealing with implementations
5315 of specific crypto iterfaces. This change also introduces integrated
5316 support for symmetric ciphers and digest implementations - so ENGINEs
5317 can now accelerate these by providing EVP_CIPHER and EVP_MD
5318 implementations of their own. This is detailed in crypto/engine/README
5319 as it couldn't be adequately described here. However, there are a few
5320 API changes worth noting - some RSA, DSA, DH, and RAND functions that
5321 were changed in the original introduction of ENGINE code have now
5322 reverted back - the hooking from this code to ENGINE is now a good
5323 deal more passive and at run-time, operations deal directly with
5324 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
5325 dereferencing through an ENGINE pointer any more. Also, the ENGINE
5326 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
5327 they were not being used by the framework as there is no concept of a
5328 BIGNUM_METHOD and they could not be generalised to the new
5329 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
5330 ENGINE_cpy() has been removed as it cannot be consistently defined in
5334 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
5337 *) Change mkdef.pl to sort symbols that get the same entry number,
5338 and make sure the automatically generated functions ERR_load_*
5339 become part of libeay.num as well.
5342 *) New function SSL_renegotiate_pending(). This returns true once
5343 renegotiation has been requested (either SSL_renegotiate() call
5344 or HelloRequest/ClientHello received from the peer) and becomes
5345 false once a handshake has been completed.
5346 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
5347 sends a HelloRequest, but does not ensure that a handshake takes
5348 place. SSL_renegotiate_pending() is useful for checking if the
5349 client has followed the request.)
5352 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
5353 By default, clients may request session resumption even during
5354 renegotiation (if session ID contexts permit); with this option,
5355 session resumption is possible only in the first handshake.
5357 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
5358 more bits available for options that should not be part of
5359 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
5362 *) Add some demos for certificate and certificate request creation.
5365 *) Make maximum certificate chain size accepted from the peer application
5366 settable (SSL*_get/set_max_cert_list()), as proposed by
5367 "Douglas E. Engert" <deengert@anl.gov>.
5370 *) Add support for shared libraries for Unixware-7
5371 (Boyd Lynn Gerber <gerberb@zenez.com>).
5374 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
5375 be done prior to destruction. Use this to unload error strings from
5376 ENGINEs that load their own error strings. NB: This adds two new API
5377 functions to "get" and "set" this destroy handler in an ENGINE.
5380 *) Alter all existing ENGINE implementations (except "openssl" and
5381 "openbsd") to dynamically instantiate their own error strings. This
5382 makes them more flexible to be built both as statically-linked ENGINEs
5383 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
5384 Also, add stub code to each that makes building them as self-contained
5385 shared-libraries easier (see README.ENGINE).
5388 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
5389 implementations into applications that are completely implemented in
5390 self-contained shared-libraries. The "dynamic" ENGINE exposes control
5391 commands that can be used to configure what shared-library to load and
5392 to control aspects of the way it is handled. Also, made an update to
5393 the README.ENGINE file that brings its information up-to-date and
5394 provides some information and instructions on the "dynamic" ENGINE
5395 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
5398 *) Make it possible to unload ranges of ERR strings with a new
5399 "ERR_unload_strings" function.
5402 *) Add a copy() function to EVP_MD.
5405 *) Make EVP_MD routines take a context pointer instead of just the
5406 md_data void pointer.
5409 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
5410 that the digest can only process a single chunk of data
5411 (typically because it is provided by a piece of
5412 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
5413 is only going to provide a single chunk of data, and hence the
5414 framework needn't accumulate the data for oneshot drivers.
5417 *) As with "ERR", make it possible to replace the underlying "ex_data"
5418 functions. This change also alters the storage and management of global
5419 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
5420 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
5421 index counters. The API functions that use this state have been changed
5422 to take a "class_index" rather than pointers to the class's local STACK
5423 and counter, and there is now an API function to dynamically create new
5424 classes. This centralisation allows us to (a) plug a lot of the
5425 thread-safety problems that existed, and (b) makes it possible to clean
5426 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
5427 such data would previously have always leaked in application code and
5428 workarounds were in place to make the memory debugging turn a blind eye
5429 to it. Application code that doesn't use this new function will still
5430 leak as before, but their memory debugging output will announce it now
5431 rather than letting it slide.
5433 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
5434 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
5435 has a return value to indicate success or failure.
5438 *) Make it possible to replace the underlying "ERR" functions such that the
5439 global state (2 LHASH tables and 2 locks) is only used by the "default"
5440 implementation. This change also adds two functions to "get" and "set"
5441 the implementation prior to it being automatically set the first time
5442 any other ERR function takes place. Ie. an application can call "get",
5443 pass the return value to a module it has just loaded, and that module
5444 can call its own "set" function using that value. This means the
5445 module's "ERR" operations will use (and modify) the error state in the
5446 application and not in its own statically linked copy of OpenSSL code.
5449 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
5450 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
5451 the operation, and provides a more encapsulated way for external code
5452 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
5453 to use these functions rather than manually incrementing the counts.
5455 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
5458 *) Add EVP test program.
5461 *) Add symmetric cipher support to ENGINE. Expect the API to change!
5464 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
5465 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
5466 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
5467 These allow a CRL to be built without having to access X509_CRL fields
5468 directly. Modify 'ca' application to use new functions.
5471 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
5472 bug workarounds. Rollback attack detection is a security feature.
5473 The problem will only arise on OpenSSL servers when TLSv1 is not
5474 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
5475 Software authors not wanting to support TLSv1 will have special reasons
5476 for their choice and can explicitly enable this option.
5477 [Bodo Moeller, Lutz Jaenicke]
5479 *) Rationalise EVP so it can be extended: don't include a union of
5480 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
5481 (similar to those existing for EVP_CIPHER_CTX).
5486 EVP_MD_CTX_init(&md); /* new function call */
5487 EVP_DigestInit(&md, EVP_sha1());
5488 EVP_DigestUpdate(&md, in, len);
5489 EVP_DigestFinal(&md, out, NULL);
5490 EVP_MD_CTX_cleanup(&md); /* new function call */
5494 *) Make DES key schedule conform to the usual scheme, as well as
5495 correcting its structure. This means that calls to DES functions
5496 now have to pass a pointer to a des_key_schedule instead of a
5497 plain des_key_schedule (which was actually always a pointer
5500 des_key_schedule ks;
5502 des_set_key_checked(..., &ks);
5503 des_ncbc_encrypt(..., &ks, ...);
5505 (Note that a later change renames 'des_...' into 'DES_...'.)
5508 *) Initial reduction of linker bloat: the use of some functions, such as
5509 PEM causes large amounts of unused functions to be linked in due to
5510 poor organisation. For example pem_all.c contains every PEM function
5511 which has a knock on effect of linking in large amounts of (unused)
5512 ASN1 code. Grouping together similar functions and splitting unrelated
5513 functions prevents this.
5516 *) Cleanup of EVP macros.
5519 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
5520 correct _ecb suffix.
5523 *) Add initial OCSP responder support to ocsp application. The
5524 revocation information is handled using the text based index
5525 use by the ca application. The responder can either handle
5526 requests generated internally, supplied in files (for example
5527 via a CGI script) or using an internal minimal server.
5530 *) Add configuration choices to get zlib compression for TLS.
5533 *) Changes to Kerberos SSL for RFC 2712 compliance:
5534 1. Implemented real KerberosWrapper, instead of just using
5535 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
5536 2. Implemented optional authenticator field of KerberosWrapper.
5538 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
5539 and authenticator structs; see crypto/krb5/.
5541 Generalized Kerberos calls to support multiple Kerberos libraries.
5542 [Vern Staats <staatsvr@asc.hpc.mil>,
5543 Jeffrey Altman <jaltman@columbia.edu>
5544 via Richard Levitte]
5546 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
5547 already does with RSA. testdsa.h now has 'priv_key/pub_key'
5548 values for each of the key sizes rather than having just
5549 parameters (and 'speed' generating keys each time).
5552 *) Speed up EVP routines.
5555 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
5556 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
5557 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
5558 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
5560 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
5561 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
5562 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
5565 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
5567 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
5570 *) Added the OS2-EMX target.
5571 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
5573 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
5574 to support NCONF routines in extension code. New function CONF_set_nconf()
5575 to allow functions which take an NCONF to also handle the old LHASH
5576 structure: this means that the old CONF compatible routines can be
5577 retained (in particular wrt extensions) without having to duplicate the
5578 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
5581 *) Enhance the general user interface with mechanisms for inner control
5582 and with possibilities to have yes/no kind of prompts.
5585 *) Change all calls to low level digest routines in the library and
5586 applications to use EVP. Add missing calls to HMAC_cleanup() and
5587 don't assume HMAC_CTX can be copied using memcpy().
5588 [Verdon Walker <VWalker@novell.com>, Steve Henson]
5590 *) Add the possibility to control engines through control names but with
5591 arbitrary arguments instead of just a string.
5592 Change the key loaders to take a UI_METHOD instead of a callback
5593 function pointer. NOTE: this breaks binary compatibility with earlier
5594 versions of OpenSSL [engine].
5595 Adapt the nCipher code for these new conditions and add a card insertion
5599 *) Enhance the general user interface with mechanisms to better support
5600 dialog box interfaces, application-defined prompts, the possibility
5601 to use defaults (for example default passwords from somewhere else)
5602 and interrupts/cancellations.
5605 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
5606 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
5609 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
5610 tidy up some unnecessarily weird code in 'sk_new()').
5611 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
5613 *) Change the key loading routines for ENGINEs to use the same kind
5614 callback (pem_password_cb) as all other routines that need this
5618 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
5619 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
5620 than this minimum value is recommended.
5623 *) New random seeder for OpenVMS, using the system process statistics
5624 that are easily reachable.
5627 *) Windows apparently can't transparently handle global
5628 variables defined in DLLs. Initialisations such as:
5630 const ASN1_ITEM *it = &ASN1_INTEGER_it;
5632 wont compile. This is used by the any applications that need to
5633 declare their own ASN1 modules. This was fixed by adding the option
5634 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
5635 needed for static libraries under Win32.
5638 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
5639 setting of purpose and trust fields. New X509_STORE trust and
5640 purpose functions and tidy up setting in other SSL functions.
5643 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
5644 structure. These are inherited by X509_STORE_CTX when it is
5645 initialised. This allows various defaults to be set in the
5646 X509_STORE structure (such as flags for CRL checking and custom
5647 purpose or trust settings) for functions which only use X509_STORE_CTX
5648 internally such as S/MIME.
5650 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
5651 trust settings if they are not set in X509_STORE. This allows X509_STORE
5652 purposes and trust (in S/MIME for example) to override any set by default.
5654 Add command line options for CRL checking to smime, s_client and s_server
5658 *) Initial CRL based revocation checking. If the CRL checking flag(s)
5659 are set then the CRL is looked up in the X509_STORE structure and
5660 its validity and signature checked, then if the certificate is found
5661 in the CRL the verify fails with a revoked error.
5663 Various new CRL related callbacks added to X509_STORE_CTX structure.
5665 Command line options added to 'verify' application to support this.
5667 This needs some additional work, such as being able to handle multiple
5668 CRLs with different times, extension based lookup (rather than just
5669 by subject name) and ultimately more complete V2 CRL extension
5673 *) Add a general user interface API (crypto/ui/). This is designed
5674 to replace things like des_read_password and friends (backward
5675 compatibility functions using this new API are provided).
5676 The purpose is to remove prompting functions from the DES code
5677 section as well as provide for prompting through dialog boxes in
5678 a window system and the like.
5681 *) Add "ex_data" support to ENGINE so implementations can add state at a
5682 per-structure level rather than having to store it globally.
5685 *) Make it possible for ENGINE structures to be copied when retrieved by
5686 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
5687 This causes the "original" ENGINE structure to act like a template,
5688 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
5689 operational state can be localised to each ENGINE structure, despite the
5690 fact they all share the same "methods". New ENGINE structures returned in
5691 this case have no functional references and the return value is the single
5692 structural reference. This matches the single structural reference returned
5693 by ENGINE_by_id() normally, when it is incremented on the pre-existing
5697 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
5698 needs to match any other type at all we need to manually clear the
5702 *) Changes to the "openssl engine" utility to include;
5703 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
5704 about an ENGINE's available control commands.
5705 - executing control commands from command line arguments using the
5706 '-pre' and '-post' switches. '-post' is only used if '-t' is
5707 specified and the ENGINE is successfully initialised. The syntax for
5708 the individual commands are colon-separated, for example;
5709 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
5712 *) New dynamic control command support for ENGINEs. ENGINEs can now
5713 declare their own commands (numbers), names (strings), descriptions,
5714 and input types for run-time discovery by calling applications. A
5715 subset of these commands are implicitly classed as "executable"
5716 depending on their input type, and only these can be invoked through
5717 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
5718 can be based on user input, config files, etc). The distinction is
5719 that "executable" commands cannot return anything other than a boolean
5720 result and can only support numeric or string input, whereas some
5721 discoverable commands may only be for direct use through
5722 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
5723 pointers, or other custom uses. The "executable" commands are to
5724 support parameterisations of ENGINE behaviour that can be
5725 unambiguously defined by ENGINEs and used consistently across any
5726 OpenSSL-based application. Commands have been added to all the
5727 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
5728 control over shared-library paths without source code alterations.
5731 *) Changed all ENGINE implementations to dynamically allocate their
5732 ENGINEs rather than declaring them statically. Apart from this being
5733 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
5734 this also allows the implementations to compile without using the
5735 internal engine_int.h header.
5738 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
5739 'const' value. Any code that should be able to modify a RAND_METHOD
5740 should already have non-const pointers to it (ie. they should only
5741 modify their own ones).
5744 *) Made a variety of little tweaks to the ENGINE code.
5745 - "atalla" and "ubsec" string definitions were moved from header files
5746 to C code. "nuron" string definitions were placed in variables
5747 rather than hard-coded - allowing parameterisation of these values
5748 later on via ctrl() commands.
5749 - Removed unused "#if 0"'d code.
5750 - Fixed engine list iteration code so it uses ENGINE_free() to release
5751 structural references.
5752 - Constified the RAND_METHOD element of ENGINE structures.
5753 - Constified various get/set functions as appropriate and added
5754 missing functions (including a catch-all ENGINE_cpy that duplicates
5755 all ENGINE values onto a new ENGINE except reference counts/state).
5756 - Removed NULL parameter checks in get/set functions. Setting a method
5757 or function to NULL is a way of cancelling out a previously set
5758 value. Passing a NULL ENGINE parameter is just plain stupid anyway
5759 and doesn't justify the extra error symbols and code.
5760 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
5761 flags from engine_int.h to engine.h.
5762 - Changed prototypes for ENGINE handler functions (init(), finish(),
5763 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
5766 *) Implement binary inversion algorithm for BN_mod_inverse in addition
5767 to the algorithm using long division. The binary algorithm can be
5768 used only if the modulus is odd. On 32-bit systems, it is faster
5769 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
5770 roughly 5-15% for 256-bit moduli), so we use it only for moduli
5771 up to 450 bits. In 64-bit environments, the binary algorithm
5772 appears to be advantageous for much longer moduli; here we use it
5773 for moduli up to 2048 bits.
5776 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
5777 could not support the combine flag in choice fields.
5780 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
5781 extensions from a certificate request to the certificate.
5784 *) Allow multiple 'certopt' and 'nameopt' options to be separated
5785 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
5786 file: this allows the display of the certificate about to be
5787 signed to be customised, to allow certain fields to be included
5788 or excluded and extension details. The old system didn't display
5789 multicharacter strings properly, omitted fields not in the policy
5790 and couldn't display additional details such as extensions.
5793 *) Function EC_POINTs_mul for multiple scalar multiplication
5794 of an arbitrary number of elliptic curve points
5795 \sum scalars[i]*points[i],
5796 optionally including the generator defined for the EC_GROUP:
5797 scalar*generator + \sum scalars[i]*points[i].
5799 EC_POINT_mul is a simple wrapper function for the typical case
5800 that the point list has just one item (besides the optional
5804 *) First EC_METHODs for curves over GF(p):
5806 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
5807 operations and provides various method functions that can also
5808 operate with faster implementations of modular arithmetic.
5810 EC_GFp_mont_method() reuses most functions that are part of
5811 EC_GFp_simple_method, but uses Montgomery arithmetic.
5813 [Bodo Moeller; point addition and point doubling
5814 implementation directly derived from source code provided by
5815 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
5817 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
5818 crypto/ec/ec_lib.c):
5820 Curves are EC_GROUP objects (with an optional group generator)
5821 based on EC_METHODs that are built into the library.
5823 Points are EC_POINT objects based on EC_GROUP objects.
5825 Most of the framework would be able to handle curves over arbitrary
5826 finite fields, but as there are no obvious types for fields other
5827 than GF(p), some functions are limited to that for now.
5830 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
5831 that the file contains a complete HTTP response.
5834 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
5835 change the def and num file printf format specifier from "%-40sXXX"
5836 to "%-39s XXX". The latter will always guarantee a space after the
5837 field while the former will cause them to run together if the field
5838 is 40 of more characters long.
5841 *) Constify the cipher and digest 'method' functions and structures
5842 and modify related functions to take constant EVP_MD and EVP_CIPHER
5846 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
5847 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
5850 *) Modify EVP_Digest*() routines so they now return values. Although the
5851 internal software routines can never fail additional hardware versions
5855 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
5857 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
5858 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
5861 ERR_R_NESTED_ASN1_ERROR
5863 ERR_R_MISSING_ASN1_EOS
5864 were 4 .. 9, conflicting with
5865 ERR_LIB_RSA (= ERR_R_RSA_LIB)
5867 ERR_LIB_PEM (= ERR_R_PEM_LIB).
5868 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
5870 Add new error code 'ERR_R_INTERNAL_ERROR'.
5873 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
5877 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
5878 sets the subject name for a new request or supersedes the
5879 subject name in a given request. Formats that can be parsed are
5880 'CN=Some Name, OU=myOU, C=IT'
5882 'CN=Some Name/OU=myOU/C=IT'.
5884 Add options '-batch' and '-verbose' to 'openssl req'.
5885 [Massimiliano Pala <madwolf@hackmasters.net>]
5887 *) Introduce the possibility to access global variables through
5888 functions on platform were that's the best way to handle exporting
5889 global variables in shared libraries. To enable this functionality,
5890 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
5891 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
5892 is normally done by Configure or something similar).
5894 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
5895 in the source file (foo.c) like this:
5897 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
5898 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
5900 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
5901 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
5903 OPENSSL_DECLARE_GLOBAL(int,foo);
5904 #define foo OPENSSL_GLOBAL_REF(foo)
5905 OPENSSL_DECLARE_GLOBAL(double,bar);
5906 #define bar OPENSSL_GLOBAL_REF(bar)
5908 The #defines are very important, and therefore so is including the
5909 header file everywhere where the defined globals are used.
5911 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
5912 of ASN.1 items, but that structure is a bit different.
5914 The largest change is in util/mkdef.pl which has been enhanced with
5915 better and easier to understand logic to choose which symbols should
5916 go into the Windows .def files as well as a number of fixes and code
5917 cleanup (among others, algorithm keywords are now sorted
5918 lexicographically to avoid constant rewrites).
5921 *) In BN_div() keep a copy of the sign of 'num' before writing the
5922 result to 'rm' because if rm==num the value will be overwritten
5923 and produce the wrong result if 'num' is negative: this caused
5924 problems with BN_mod() and BN_nnmod().
5927 *) Function OCSP_request_verify(). This checks the signature on an
5928 OCSP request and verifies the signer certificate. The signer
5929 certificate is just checked for a generic purpose and OCSP request
5933 *) Add OCSP_check_validity() function to check the validity of OCSP
5934 responses. OCSP responses are prepared in real time and may only
5935 be a few seconds old. Simply checking that the current time lies
5936 between thisUpdate and nextUpdate max reject otherwise valid responses
5937 caused by either OCSP responder or client clock inaccuracy. Instead
5938 we allow thisUpdate and nextUpdate to fall within a certain period of
5939 the current time. The age of the response can also optionally be
5940 checked. Two new options -validity_period and -status_age added to
5944 *) If signature or public key algorithm is unrecognized print out its
5945 OID rather that just UNKNOWN.
5948 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
5949 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
5950 ID to be generated from the issuer certificate alone which can then be
5951 passed to OCSP_id_issuer_cmp().
5954 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
5955 ASN1 modules to export functions returning ASN1_ITEM pointers
5956 instead of the ASN1_ITEM structures themselves. This adds several
5957 new macros which allow the underlying ASN1 function/structure to
5958 be accessed transparently. As a result code should not use ASN1_ITEM
5959 references directly (such as &X509_it) but instead use the relevant
5960 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
5961 use of the new ASN1 code on platforms where exporting structures
5962 is problematical (for example in shared libraries) but exporting
5963 functions returning pointers to structures is not.
5966 *) Add support for overriding the generation of SSL/TLS session IDs.
5967 These callbacks can be registered either in an SSL_CTX or per SSL.
5968 The purpose of this is to allow applications to control, if they wish,
5969 the arbitrary values chosen for use as session IDs, particularly as it
5970 can be useful for session caching in multiple-server environments. A
5971 command-line switch for testing this (and any client code that wishes
5972 to use such a feature) has been added to "s_server".
5973 [Geoff Thorpe, Lutz Jaenicke]
5975 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
5976 of the form '#if defined(...) || defined(...) || ...' and
5977 '#if !defined(...) && !defined(...) && ...'. This also avoids
5978 the growing number of special cases it was previously handling.
5981 *) Make all configuration macros available for application by making
5982 sure they are available in opensslconf.h, by giving them names starting
5983 with "OPENSSL_" to avoid conflicts with other packages and by making
5984 sure e_os2.h will cover all platform-specific cases together with
5986 Additionally, it is now possible to define configuration/platform-
5987 specific names (called "system identities"). In the C code, these
5988 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
5989 macro with the name beginning with "OPENSSL_SYS_", which is determined
5990 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
5994 *) New option -set_serial to 'req' and 'x509' this allows the serial
5995 number to use to be specified on the command line. Previously self
5996 signed certificates were hard coded with serial number 0 and the
5997 CA options of 'x509' had to use a serial number in a file which was
6001 *) New options to 'ca' utility to support V2 CRL entry extensions.
6002 Currently CRL reason, invalidity date and hold instruction are
6003 supported. Add new CRL extensions to V3 code and some new objects.
6006 *) New function EVP_CIPHER_CTX_set_padding() this is used to
6007 disable standard block padding (aka PKCS#5 padding) in the EVP
6008 API, which was previously mandatory. This means that the data is
6009 not padded in any way and so the total length much be a multiple
6010 of the block size, otherwise an error occurs.
6013 *) Initial (incomplete) OCSP SSL support.
6016 *) New function OCSP_parse_url(). This splits up a URL into its host,
6017 port and path components: primarily to parse OCSP URLs. New -url
6018 option to ocsp utility.
6021 *) New nonce behavior. The return value of OCSP_check_nonce() now
6022 reflects the various checks performed. Applications can decide
6023 whether to tolerate certain situations such as an absent nonce
6024 in a response when one was present in a request: the ocsp application
6025 just prints out a warning. New function OCSP_add1_basic_nonce()
6026 this is to allow responders to include a nonce in a response even if
6027 the request is nonce-less.
6030 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
6031 skipped when using openssl x509 multiple times on a single input file,
6032 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
6035 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
6036 set string type: to handle setting ASN1_TIME structures. Fix ca
6037 utility to correctly initialize revocation date of CRLs.
6040 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
6041 the clients preferred ciphersuites and rather use its own preferences.
6042 Should help to work around M$ SGC (Server Gated Cryptography) bug in
6043 Internet Explorer by ensuring unchanged hash method during stepup.
6044 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
6047 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
6048 to aes and add a new 'exist' option to print out symbols that don't
6052 *) Additional options to ocsp utility to allow flags to be set and
6053 additional certificates supplied.
6056 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
6057 OCSP client a number of certificate to only verify the response
6061 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
6062 handle the new API. Currently only ECB, CBC modes supported. Add new
6065 Add TLS AES ciphersuites as described in RFC3268, "Advanced
6066 Encryption Standard (AES) Ciphersuites for Transport Layer
6067 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
6068 not enabled by default and were not part of the "ALL" ciphersuite
6069 alias because they were not yet official; they could be
6070 explicitly requested by specifying the "AESdraft" ciphersuite
6071 group alias. In the final release of OpenSSL 0.9.7, the group
6072 alias is called "AES" and is part of "ALL".)
6073 [Ben Laurie, Steve Henson, Bodo Moeller]
6075 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
6076 request to response.
6079 *) Functions for OCSP responders. OCSP_request_onereq_count(),
6080 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
6081 extract information from a certificate request. OCSP_response_create()
6082 creates a response and optionally adds a basic response structure.
6083 OCSP_basic_add1_status() adds a complete single response to a basic
6084 response and returns the OCSP_SINGLERESP structure just added (to allow
6085 extensions to be included for example). OCSP_basic_add1_cert() adds a
6086 certificate to a basic response and OCSP_basic_sign() signs a basic
6087 response with various flags. New helper functions ASN1_TIME_check()
6088 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
6089 (converts ASN1_TIME to GeneralizedTime).
6092 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
6093 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
6094 structure from a certificate. X509_pubkey_digest() digests the public_key
6095 contents: this is used in various key identifiers.
6098 *) Make sk_sort() tolerate a NULL argument.
6099 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
6101 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
6102 passed by the function are trusted implicitly. If any of them signed the
6103 response then it is assumed to be valid and is not verified.
6106 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
6107 to data. This was previously part of the PKCS7 ASN1 code. This
6108 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
6109 [Steve Henson, reported by Kenneth R. Robinette
6110 <support@securenetterm.com>]
6112 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
6113 routines: without these tracing memory leaks is very painful.
6114 Fix leaks in PKCS12 and PKCS7 routines.
6117 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
6118 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
6119 effectively meant GeneralizedTime would never be used. Now it
6120 is initialised to -1 but X509_time_adj() now has to check the value
6121 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
6122 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
6123 [Steve Henson, reported by Kenneth R. Robinette
6124 <support@securenetterm.com>]
6126 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
6127 result in a zero length in the ASN1_INTEGER structure which was
6128 not consistent with the structure when d2i_ASN1_INTEGER() was used
6129 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
6130 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
6131 where it did not print out a minus for negative ASN1_INTEGER.
6134 *) Add summary printout to ocsp utility. The various functions which
6135 convert status values to strings have been renamed to:
6136 OCSP_response_status_str(), OCSP_cert_status_str() and
6137 OCSP_crl_reason_str() and are no longer static. New options
6138 to verify nonce values and to disable verification. OCSP response
6139 printout format cleaned up.
6142 *) Add additional OCSP certificate checks. These are those specified
6143 in RFC2560. This consists of two separate checks: the CA of the
6144 certificate being checked must either be the OCSP signer certificate
6145 or the issuer of the OCSP signer certificate. In the latter case the
6146 OCSP signer certificate must contain the OCSP signing extended key
6147 usage. This check is performed by attempting to match the OCSP
6148 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
6149 in the OCSP_CERTID structures of the response.
6152 *) Initial OCSP certificate verification added to OCSP_basic_verify()
6153 and related routines. This uses the standard OpenSSL certificate
6154 verify routines to perform initial checks (just CA validity) and
6155 to obtain the certificate chain. Then additional checks will be
6156 performed on the chain. Currently the root CA is checked to see
6157 if it is explicitly trusted for OCSP signing. This is used to set
6158 a root CA as a global signing root: that is any certificate that
6159 chains to that CA is an acceptable OCSP signing certificate.
6162 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
6163 extensions from a separate configuration file.
6164 As when reading extensions from the main configuration file,
6165 the '-extensions ...' option may be used for specifying the
6167 [Massimiliano Pala <madwolf@comune.modena.it>]
6169 *) New OCSP utility. Allows OCSP requests to be generated or
6170 read. The request can be sent to a responder and the output
6171 parsed, outputed or printed in text form. Not complete yet:
6172 still needs to check the OCSP response validity.
6175 *) New subcommands for 'openssl ca':
6176 'openssl ca -status <serial>' prints the status of the cert with
6177 the given serial number (according to the index file).
6178 'openssl ca -updatedb' updates the expiry status of certificates
6180 [Massimiliano Pala <madwolf@comune.modena.it>]
6182 *) New '-newreq-nodes' command option to CA.pl. This is like
6183 '-newreq', but calls 'openssl req' with the '-nodes' option
6184 so that the resulting key is not encrypted.
6185 [Damien Miller <djm@mindrot.org>]
6187 *) New configuration for the GNU Hurd.
6188 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
6190 *) Initial code to implement OCSP basic response verify. This
6191 is currently incomplete. Currently just finds the signer's
6192 certificate and verifies the signature on the response.
6195 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
6196 value of OPENSSLDIR. This is available via the new '-d' option
6197 to 'openssl version', and is also included in 'openssl version -a'.
6200 *) Allowing defining memory allocation callbacks that will be given
6201 file name and line number information in additional arguments
6202 (a const char* and an int). The basic functionality remains, as
6203 well as the original possibility to just replace malloc(),
6204 realloc() and free() by functions that do not know about these
6205 additional arguments. To register and find out the current
6206 settings for extended allocation functions, the following
6207 functions are provided:
6209 CRYPTO_set_mem_ex_functions
6210 CRYPTO_set_locked_mem_ex_functions
6211 CRYPTO_get_mem_ex_functions
6212 CRYPTO_get_locked_mem_ex_functions
6214 These work the same way as CRYPTO_set_mem_functions and friends.
6215 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
6216 extended allocation function is enabled.
6217 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
6218 a conventional allocation function is enabled.
6219 [Richard Levitte, Bodo Moeller]
6221 *) Finish off removing the remaining LHASH function pointer casts.
6222 There should no longer be any prototype-casting required when using
6223 the LHASH abstraction, and any casts that remain are "bugs". See
6224 the callback types and macros at the head of lhash.h for details
6225 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
6228 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
6229 If /dev/[u]random devices are not available or do not return enough
6230 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
6232 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
6233 /etc/entropy will be queried once each in this sequence, quering stops
6234 when enough entropy was collected without querying more sockets.
6237 *) Change the Unix RAND_poll() variant to be able to poll several
6238 random devices, as specified by DEVRANDOM, until a sufficient amount
6239 of data has been collected. We spend at most 10 ms on each file
6240 (select timeout) and read in non-blocking mode. DEVRANDOM now
6241 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
6242 (previously it was just the string "/dev/urandom"), so on typical
6243 platforms the 10 ms delay will never occur.
6244 Also separate out the Unix variant to its own file, rand_unix.c.
6245 For VMS, there's a currently-empty rand_vms.c.
6248 *) Move OCSP client related routines to ocsp_cl.c. These
6249 provide utility functions which an application needing
6250 to issue a request to an OCSP responder and analyse the
6251 response will typically need: as opposed to those which an
6252 OCSP responder itself would need which will be added later.
6254 OCSP_request_sign() signs an OCSP request with an API similar
6255 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
6256 response. OCSP_response_get1_basic() extracts basic response
6257 from response. OCSP_resp_find_status(): finds and extracts status
6258 information from an OCSP_CERTID structure (which will be created
6259 when the request structure is built). These are built from lower
6260 level functions which work on OCSP_SINGLERESP structures but
6261 wont normally be used unless the application wishes to examine
6262 extensions in the OCSP response for example.
6264 Replace nonce routines with a pair of functions.
6265 OCSP_request_add1_nonce() adds a nonce value and optionally
6266 generates a random value. OCSP_check_nonce() checks the
6267 validity of the nonce in an OCSP response.
6270 *) Change function OCSP_request_add() to OCSP_request_add0_id().
6271 This doesn't copy the supplied OCSP_CERTID and avoids the
6272 need to free up the newly created id. Change return type
6273 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
6274 This can then be used to add extensions to the request.
6275 Deleted OCSP_request_new(), since most of its functionality
6276 is now in OCSP_REQUEST_new() (and the case insensitive name
6277 clash) apart from the ability to set the request name which
6278 will be added elsewhere.
6281 *) Update OCSP API. Remove obsolete extensions argument from
6282 various functions. Extensions are now handled using the new
6283 OCSP extension code. New simple OCSP HTTP function which
6284 can be used to send requests and parse the response.
6287 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
6288 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
6289 uses the special reorder version of SET OF to sort the attributes
6290 and reorder them to match the encoded order. This resolves a long
6291 standing problem: a verify on a PKCS7 structure just after signing
6292 it used to fail because the attribute order did not match the
6293 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
6294 it uses the received order. This is necessary to tolerate some broken
6295 software that does not order SET OF. This is handled by encoding
6296 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
6297 to produce the required SET OF.
6300 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
6301 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
6302 files to get correct declarations of the ASN.1 item variables.
6305 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
6306 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
6307 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
6308 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
6309 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
6310 ASN1_ITEM and no wrapper functions.
6313 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
6314 replace the old function pointer based I/O routines. Change most of
6315 the *_d2i_bio() and *_d2i_fp() functions to use these.
6318 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
6319 lines, recognice more "algorithms" that can be deselected, and make
6320 it complain about algorithm deselection that isn't recognised.
6323 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
6324 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
6325 to use new functions. Add NO_ASN1_OLD which can be set to remove
6326 some old style ASN1 functions: this can be used to determine if old
6327 code will still work when these eventually go away.
6330 *) New extension functions for OCSP structures, these follow the
6331 same conventions as certificates and CRLs.
6334 *) New function X509V3_add1_i2d(). This automatically encodes and
6335 adds an extension. Its behaviour can be customised with various
6336 flags to append, replace or delete. Various wrappers added for
6337 certifcates and CRLs.
6340 *) Fix to avoid calling the underlying ASN1 print routine when
6341 an extension cannot be parsed. Correct a typo in the
6342 OCSP_SERVICELOC extension. Tidy up print OCSP format.
6345 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
6346 entries for variables.
6349 *) Add functionality to apps/openssl.c for detecting locking
6350 problems: As the program is single-threaded, all we have
6351 to do is register a locking callback using an array for
6352 storing which locks are currently held by the program.
6355 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
6356 SSL_get_ex_data_X509_STORE_idx(), which is used in
6357 ssl_verify_cert_chain() and thus can be called at any time
6358 during TLS/SSL handshakes so that thread-safety is essential.
6359 Unfortunately, the ex_data design is not at all suited
6360 for multi-threaded use, so it probably should be abolished.
6363 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
6364 [Broadcom, tweaked and integrated by Geoff Thorpe]
6366 *) Move common extension printing code to new function
6367 X509V3_print_extensions(). Reorganise OCSP print routines and
6368 implement some needed OCSP ASN1 functions. Add OCSP extensions.
6371 *) New function X509_signature_print() to remove duplication in some
6375 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
6376 set (this was treated exactly the same as SET OF previously). This
6377 is used to reorder the STACK representing the structure to match the
6378 encoding. This will be used to get round a problem where a PKCS7
6379 structure which was signed could not be verified because the STACK
6380 order did not reflect the encoded order.
6383 *) Reimplement the OCSP ASN1 module using the new code.
6386 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
6387 for its ASN1 operations. The old style function pointers still exist
6388 for now but they will eventually go away.
6391 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
6392 completely replaces the old ASN1 functionality with a table driven
6393 encoder and decoder which interprets an ASN1_ITEM structure describing
6394 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
6395 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
6396 has also been converted to the new form.
6399 *) Change BN_mod_exp_recp so that negative moduli are tolerated
6400 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
6401 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
6402 for negative moduli.
6405 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
6406 of not touching the result's sign bit.
6409 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
6413 *) Changed the LHASH code to use prototypes for callbacks, and created
6414 macros to declare and implement thin (optionally static) functions
6415 that provide type-safety and avoid function pointer casting for the
6416 type-specific callbacks.
6419 *) Added Kerberos Cipher Suites to be used with TLS, as written in
6421 [Veers Staats <staatsvr@asc.hpc.mil>,
6422 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
6424 *) Reformat the FAQ so the different questions and answers can be divided
6425 in sections depending on the subject.
6428 *) Have the zlib compression code load ZLIB.DLL dynamically under
6432 *) New function BN_mod_sqrt for computing square roots modulo a prime
6433 (using the probabilistic Tonelli-Shanks algorithm unless
6434 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
6435 be handled deterministically).
6436 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6438 *) Make BN_mod_inverse faster by explicitly handling small quotients
6439 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
6440 512 bits], about 30% for larger ones [1024 or 2048 bits].)
6443 *) New function BN_kronecker.
6446 *) Fix BN_gcd so that it works on negative inputs; the result is
6447 positive unless both parameters are zero.
6448 Previously something reasonably close to an infinite loop was
6449 possible because numbers could be growing instead of shrinking
6450 in the implementation of Euclid's algorithm.
6453 *) Fix BN_is_word() and BN_is_one() macros to take into account the
6454 sign of the number in question.
6456 Fix BN_is_word(a,w) to work correctly for w == 0.
6458 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
6459 because its test if the absolute value of 'a' equals 'w'.
6460 Note that BN_abs_is_word does *not* handle w == 0 reliably;
6461 it exists mostly for use in the implementations of BN_is_zero(),
6462 BN_is_one(), and BN_is_word().
6465 *) New function BN_swap.
6468 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
6469 the exponentiation functions are more likely to produce reasonable
6470 results on negative inputs.
6473 *) Change BN_mod_mul so that the result is always non-negative.
6474 Previously, it could be negative if one of the factors was negative;
6475 I don't think anyone really wanted that behaviour.
6478 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
6479 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
6480 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
6481 and add new functions:
6490 BN_mod_lshift1_quick
6494 These functions always generate non-negative results.
6496 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
6497 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
6499 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
6500 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
6501 be reduced modulo m.
6502 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
6505 The following entry accidentally appeared in the CHANGES file
6506 distributed with OpenSSL 0.9.7. The modifications described in
6507 it do *not* apply to OpenSSL 0.9.7.
6509 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6510 was actually never needed) and in BN_mul(). The removal in BN_mul()
6511 required a small change in bn_mul_part_recursive() and the addition
6512 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6513 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6514 bn_sub_words() and bn_add_words() except they take arrays with
6519 *) In 'openssl passwd', verify passwords read from the terminal
6520 unless the '-salt' option is used (which usually means that
6521 verification would just waste user's time since the resulting
6522 hash is going to be compared with some given password hash)
6523 or the new '-noverify' option is used.
6525 This is an incompatible change, but it does not affect
6526 non-interactive use of 'openssl passwd' (passwords on the command
6527 line, '-stdin' option, '-in ...' option) and thus should not
6531 *) Remove all references to RSAref, since there's no more need for it.
6534 *) Make DSO load along a path given through an environment variable
6535 (SHLIB_PATH) with shl_load().
6538 *) Constify the ENGINE code as a result of BIGNUM constification.
6539 Also constify the RSA code and most things related to it. In a
6540 few places, most notable in the depth of the ASN.1 code, ugly
6541 casts back to non-const were required (to be solved at a later
6545 *) Make it so the openssl application has all engines loaded by default.
6548 *) Constify the BIGNUM routines a little more.
6551 *) Add the following functions:
6553 ENGINE_load_cswift()
6555 ENGINE_load_atalla()
6557 ENGINE_load_builtin_engines()
6559 That way, an application can itself choose if external engines that
6560 are built-in in OpenSSL shall ever be used or not. The benefit is
6561 that applications won't have to be linked with libdl or other dso
6562 libraries unless it's really needed.
6564 Changed 'openssl engine' to load all engines on demand.
6565 Changed the engine header files to avoid the duplication of some
6566 declarations (they differed!).
6569 *) 'openssl engine' can now list capabilities.
6572 *) Better error reporting in 'openssl engine'.
6575 *) Never call load_dh_param(NULL) in s_server.
6578 *) Add engine application. It can currently list engines by name and
6579 identity, and test if they are actually available.
6582 *) Improve RPM specification file by forcing symbolic linking and making
6583 sure the installed documentation is also owned by root.root.
6584 [Damien Miller <djm@mindrot.org>]
6586 *) Give the OpenSSL applications more possibilities to make use of
6587 keys (public as well as private) handled by engines.
6590 *) Add OCSP code that comes from CertCo.
6593 *) Add VMS support for the Rijndael code.
6596 *) Added untested support for Nuron crypto accelerator.
6599 *) Add support for external cryptographic devices. This code was
6600 previously distributed separately as the "engine" branch.
6601 [Geoff Thorpe, Richard Levitte]
6603 *) Rework the filename-translation in the DSO code. It is now possible to
6604 have far greater control over how a "name" is turned into a filename
6605 depending on the operating environment and any oddities about the
6606 different shared library filenames on each system.
6609 *) Support threads on FreeBSD-elf in Configure.
6612 *) Fix for SHA1 assembly problem with MASM: it produces
6613 warnings about corrupt line number information when assembling
6614 with debugging information. This is caused by the overlapping
6616 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
6619 NCONF_get_number() has no error checking at all. As a replacement,
6620 NCONF_get_number_e() is defined (_e for "error checking") and is
6621 promoted strongly. The old NCONF_get_number is kept around for
6622 binary backward compatibility.
6623 Make it possible for methods to load from something other than a BIO,
6624 by providing a function pointer that is given a name instead of a BIO.
6625 For example, this could be used to load configuration data from an
6629 *) Fix for non blocking accept BIOs. Added new I/O special reason
6630 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
6631 with non blocking I/O was not possible because no retry code was
6632 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
6636 *) Added the beginnings of Rijndael support.
6639 *) Fix for bug in DirectoryString mask setting. Add support for
6640 X509_NAME_print_ex() in 'req' and X509_print_ex() function
6641 to allow certificate printing to more controllable, additional
6642 'certopt' option to 'x509' to allow new printing options to be
6646 *) Clean old EAY MD5 hack from e_os.h.
6649 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
6651 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
6652 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
6653 [Joe Orton, Steve Henson]
6655 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
6657 *) Fix additional bug revealed by the NISCC test suite:
6659 Stop bug triggering large recursion when presented with
6660 certain ASN.1 tags (CVE-2003-0851)
6663 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
6665 *) Fix various bugs revealed by running the NISCC test suite:
6667 Stop out of bounds reads in the ASN1 code when presented with
6668 invalid tags (CVE-2003-0543 and CVE-2003-0544).
6670 If verify callback ignores invalid public key errors don't try to check
6671 certificate signature with the NULL public key.
6675 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
6676 if the server requested one: as stated in TLS 1.0 and SSL 3.0
6680 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
6681 extra data after the compression methods not only for TLS 1.0
6682 but also for SSL 3.0 (as required by the specification).
6683 [Bodo Moeller; problem pointed out by Matthias Loepfe]
6685 *) Change X509_certificate_type() to mark the key as exported/exportable
6686 when it's 512 *bits* long, not 512 bytes.
6689 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
6691 *) Countermeasure against the Klima-Pokorny-Rosa extension of
6692 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
6693 a protocol version number mismatch like a decryption error
6694 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
6697 *) Turn on RSA blinding by default in the default implementation
6698 to avoid a timing attack. Applications that don't want it can call
6699 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
6700 They would be ill-advised to do so in most cases.
6701 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
6703 *) Change RSA blinding code so that it works when the PRNG is not
6704 seeded (in this case, the secret RSA exponent is abused as
6705 an unpredictable seed -- if it is not unpredictable, there
6706 is no point in blinding anyway). Make RSA blinding thread-safe
6707 by remembering the creator's thread ID in rsa->blinding and
6708 having all other threads use local one-time blinding factors
6709 (this requires more computation than sharing rsa->blinding, but
6710 avoids excessive locking; and if an RSA object is not shared
6711 between threads, blinding will still be very fast).
6714 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
6716 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
6717 via timing by performing a MAC computation even if incorrrect
6718 block cipher padding has been found. This is a countermeasure
6719 against active attacks where the attacker has to distinguish
6720 between bad padding and a MAC verification error. (CVE-2003-0078)
6722 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
6723 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
6724 Martin Vuagnoux (EPFL, Ilion)]
6726 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
6728 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
6729 memory from it's contents. This is done with a counter that will
6730 place alternating values in each byte. This can be used to solve
6731 two issues: 1) the removal of calls to memset() by highly optimizing
6732 compilers, and 2) cleansing with other values than 0, since those can
6733 be read through on certain media, for example a swap space on disk.
6736 *) Bugfix: client side session caching did not work with external caching,
6737 because the session->cipher setting was not restored when reloading
6738 from the external cache. This problem was masked, when
6739 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
6740 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
6743 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
6744 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
6745 [Zeev Lieber <zeev-l@yahoo.com>]
6747 *) Undo an undocumented change introduced in 0.9.6e which caused
6748 repeated calls to OpenSSL_add_all_ciphers() and
6749 OpenSSL_add_all_digests() to be ignored, even after calling
6753 *) Change the default configuration reader to deal with last line not
6754 being properly terminated.
6757 *) Change X509_NAME_cmp() so it applies the special rules on handling
6758 DN values that are of type PrintableString, as well as RDNs of type
6759 emailAddress where the value has the type ia5String.
6760 [stefank@valicert.com via Richard Levitte]
6762 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
6763 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
6764 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
6765 the bitwise-OR of the two for use by the majority of applications
6766 wanting this behaviour, and update the docs. The documented
6767 behaviour and actual behaviour were inconsistent and had been
6768 changing anyway, so this is more a bug-fix than a behavioural
6770 [Geoff Thorpe, diagnosed by Nadav Har'El]
6772 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
6773 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
6776 *) Fix initialization code race conditions in
6777 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
6778 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
6779 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
6780 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
6781 ssl2_get_cipher_by_char(),
6782 ssl3_get_cipher_by_char().
6783 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
6785 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
6786 the cached sessions are flushed, as the remove_cb() might use ex_data
6787 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
6788 (see [openssl.org #212]).
6789 [Geoff Thorpe, Lutz Jaenicke]
6791 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
6792 length, instead of the encoding length to d2i_ASN1_OBJECT.
6795 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
6797 *) [In 0.9.6g-engine release:]
6798 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
6799 [Lynn Gazis <lgazis@rainbow.com>]
6801 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
6803 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
6804 and get fix the header length calculation.
6805 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
6806 Alon Kantor <alonk@checkpoint.com> (and others),
6809 *) Use proper error handling instead of 'assertions' in buffer
6810 overflow checks added in 0.9.6e. This prevents DoS (the
6811 assertions could call abort()).
6812 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
6814 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
6816 *) Add various sanity checks to asn1_get_length() to reject
6817 the ASN1 length bytes if they exceed sizeof(long), will appear
6818 negative or the content length exceeds the length of the
6820 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
6822 *) Fix cipher selection routines: ciphers without encryption had no flags
6823 for the cipher strength set and where therefore not handled correctly
6824 by the selection routines (PR #130).
6827 *) Fix EVP_dsa_sha macro.
6831 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
6832 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
6833 that was added in OpenSSL 0.9.6d.
6835 As the countermeasure turned out to be incompatible with some
6836 broken SSL implementations, the new option is part of SSL_OP_ALL.
6837 SSL_OP_ALL is usually employed when compatibility with weird SSL
6838 implementations is desired (e.g. '-bugs' option to 's_client' and
6839 's_server'), so the new option is automatically set in many
6843 *) Changes in security patch:
6845 Changes marked "(CHATS)" were sponsored by the Defense Advanced
6846 Research Projects Agency (DARPA) and Air Force Research Laboratory,
6847 Air Force Materiel Command, USAF, under agreement number
6850 *) Add various sanity checks to asn1_get_length() to reject
6851 the ASN1 length bytes if they exceed sizeof(long), will appear
6852 negative or the content length exceeds the length of the
6853 supplied buffer. (CVE-2002-0659)
6854 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
6856 *) Assertions for various potential buffer overflows, not known to
6858 [Ben Laurie (CHATS)]
6860 *) Various temporary buffers to hold ASCII versions of integers were
6861 too small for 64 bit platforms. (CVE-2002-0655)
6862 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
6864 *) Remote buffer overflow in SSL3 protocol - an attacker could
6865 supply an oversized session ID to a client. (CVE-2002-0656)
6866 [Ben Laurie (CHATS)]
6868 *) Remote buffer overflow in SSL2 protocol - an attacker could
6869 supply an oversized client master key. (CVE-2002-0656)
6870 [Ben Laurie (CHATS)]
6872 Changes between 0.9.6c and 0.9.6d [9 May 2002]
6874 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
6875 encoded as NULL) with id-dsa-with-sha1.
6876 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
6878 *) Check various X509_...() return values in apps/req.c.
6879 [Nils Larsch <nla@trustcenter.de>]
6881 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
6882 an end-of-file condition would erronously be flagged, when the CRLF
6883 was just at the end of a processed block. The bug was discovered when
6884 processing data through a buffering memory BIO handing the data to a
6885 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
6886 <ptsekov@syntrex.com> and Nedelcho Stanev.
6889 *) Implement a countermeasure against a vulnerability recently found
6890 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
6891 before application data chunks to avoid the use of known IVs
6892 with data potentially chosen by the attacker.
6895 *) Fix length checks in ssl3_get_client_hello().
6898 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
6899 to prevent ssl3_read_internal() from incorrectly assuming that
6900 ssl3_read_bytes() found application data while handshake
6901 processing was enabled when in fact s->s3->in_read_app_data was
6902 merely automatically cleared during the initial handshake.
6903 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
6905 *) Fix object definitions for Private and Enterprise: they were not
6906 recognized in their shortname (=lowercase) representation. Extend
6907 obj_dat.pl to issue an error when using undefined keywords instead
6908 of silently ignoring the problem (Svenning Sorensen
6909 <sss@sss.dnsalias.net>).
6912 *) Fix DH_generate_parameters() so that it works for 'non-standard'
6913 generators, i.e. generators other than 2 and 5. (Previously, the
6914 code did not properly initialise the 'add' and 'rem' values to
6915 BN_generate_prime().)
6917 In the new general case, we do not insist that 'generator' is
6918 actually a primitive root: This requirement is rather pointless;
6919 a generator of the order-q subgroup is just as good, if not
6923 *) Map new X509 verification errors to alerts. Discovered and submitted by
6924 Tom Wu <tom@arcot.com>.
6927 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
6928 returning non-zero before the data has been completely received
6929 when using non-blocking I/O.
6930 [Bodo Moeller; problem pointed out by John Hughes]
6932 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
6933 [Ben Laurie, Lutz Jaenicke]
6935 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
6936 Yoram Zahavi <YoramZ@gilian.com>).
6939 *) Add information about CygWin 1.3 and on, and preserve proper
6940 configuration for the versions before that.
6941 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
6943 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
6944 check whether we deal with a copy of a session and do not delete from
6945 the cache in this case. Problem reported by "Izhar Shoshani Levi"
6946 <izhar@checkpoint.com>.
6949 *) Do not store session data into the internal session cache, if it
6950 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
6951 flag is set). Proposed by Aslam <aslam@funk.com>.
6954 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
6958 *) [In 0.9.6d-engine release:]
6959 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
6960 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6962 *) Add the configuration target linux-s390x.
6963 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
6965 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
6966 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
6967 variable as an indication that a ClientHello message has been
6968 received. As the flag value will be lost between multiple
6969 invocations of ssl3_accept when using non-blocking I/O, the
6970 function may not be aware that a handshake has actually taken
6971 place, thus preventing a new session from being added to the
6974 To avoid this problem, we now set s->new_session to 2 instead of
6975 using a local variable.
6976 [Lutz Jaenicke, Bodo Moeller]
6978 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
6979 if the SSL_R_LENGTH_MISMATCH error is detected.
6980 [Geoff Thorpe, Bodo Moeller]
6982 *) New 'shared_ldflag' column in Configure platform table.
6985 *) Fix EVP_CIPHER_mode macro.
6986 ["Dan S. Camper" <dan@bti.net>]
6988 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
6989 type, we must throw them away by setting rr->length to 0.
6990 [D P Chang <dpc@qualys.com>]
6992 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
6994 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
6995 <Dominikus.Scherkl@biodata.com>. (The previous implementation
6996 worked incorrectly for those cases where range = 10..._2 and
6997 3*range is two bits longer than range.)
7000 *) Only add signing time to PKCS7 structures if it is not already
7004 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
7005 OBJ_ld_ce should be OBJ_id_ce.
7006 Also some ip-pda OIDs in crypto/objects/objects.txt were
7007 incorrect (cf. RFC 3039).
7008 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
7010 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
7011 returns early because it has nothing to do.
7012 [Andy Schneider <andy.schneider@bjss.co.uk>]
7014 *) [In 0.9.6c-engine release:]
7015 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
7016 [Andy Schneider <andy.schneider@bjss.co.uk>]
7018 *) [In 0.9.6c-engine release:]
7019 Add support for Cryptographic Appliance's keyserver technology.
7020 (Use engine 'keyclient')
7021 [Cryptographic Appliances and Geoff Thorpe]
7023 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
7024 is called via tools/c89.sh because arguments have to be
7025 rearranged (all '-L' options must appear before the first object
7027 [Richard Shapiro <rshapiro@abinitio.com>]
7029 *) [In 0.9.6c-engine release:]
7030 Add support for Broadcom crypto accelerator cards, backported
7032 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
7034 *) [In 0.9.6c-engine release:]
7035 Add support for SureWare crypto accelerator cards from
7036 Baltimore Technologies. (Use engine 'sureware')
7037 [Baltimore Technologies and Mark Cox]
7039 *) [In 0.9.6c-engine release:]
7040 Add support for crypto accelerator cards from Accelerated
7041 Encryption Processing, www.aep.ie. (Use engine 'aep')
7042 [AEP Inc. and Mark Cox]
7044 *) Add a configuration entry for gcc on UnixWare.
7045 [Gary Benson <gbenson@redhat.com>]
7047 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
7048 messages are stored in a single piece (fixed-length part and
7049 variable-length part combined) and fix various bugs found on the way.
7052 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
7053 instead. BIO_gethostbyname() does not know what timeouts are
7054 appropriate, so entries would stay in cache even when they have
7056 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
7058 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
7059 faced with a pathologically small ClientHello fragment that does
7060 not contain client_version: Instead of aborting with an error,
7061 simply choose the highest available protocol version (i.e.,
7062 TLS 1.0 unless it is disabled). In practice, ClientHello
7063 messages are never sent like this, but this change gives us
7064 strictly correct behaviour at least for TLS.
7067 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
7068 never resets s->method to s->ctx->method when called from within
7069 one of the SSL handshake functions.
7070 [Bodo Moeller; problem pointed out by Niko Baric]
7072 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
7073 (sent using the client's version number) if client_version is
7074 smaller than the protocol version in use. Also change
7075 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
7076 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
7077 the client will at least see that alert.
7080 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
7084 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
7085 client receives HelloRequest while in a handshake.
7086 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
7088 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
7089 should end in 'break', not 'goto end' which circumvents various
7090 cleanups done in state SSL_ST_OK. But session related stuff
7091 must be disabled for SSL_ST_OK in the case that we just sent a
7094 Also avoid some overhead by not calling ssl_init_wbio_buffer()
7095 before just sending a HelloRequest.
7096 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
7098 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
7099 reveal whether illegal block cipher padding was found or a MAC
7100 verification error occured. (Neither SSLerr() codes nor alerts
7101 are directly visible to potential attackers, but the information
7102 may leak via logfiles.)
7104 Similar changes are not required for the SSL 2.0 implementation
7105 because the number of padding bytes is sent in clear for SSL 2.0,
7106 and the extra bytes are just ignored. However ssl/s2_pkt.c
7107 failed to verify that the purported number of padding bytes is in
7111 *) Add OpenUNIX-8 support including shared libraries
7112 (Boyd Lynn Gerber <gerberb@zenez.com>).
7115 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
7116 'wristwatch attack' using huge encoding parameters (cf.
7117 James H. Manger's CRYPTO 2001 paper). Note that the
7118 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
7119 encoding parameters and hence was not vulnerable.
7122 *) BN_sqr() bug fix.
7123 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
7125 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
7126 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
7127 followed by modular reduction.
7128 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
7130 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
7131 equivalent based on BN_pseudo_rand() instead of BN_rand().
7134 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
7135 This function was broken, as the check for a new client hello message
7136 to handle SGC did not allow these large messages.
7137 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
7140 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
7143 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
7144 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
7147 *) Rework the configuration and shared library support for Tru64 Unix.
7148 The configuration part makes use of modern compiler features and
7149 still retains old compiler behavior for those that run older versions
7150 of the OS. The shared library support part includes a variant that
7151 uses the RPATH feature, and is available through the special
7152 configuration target "alpha-cc-rpath", which will never be selected
7154 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
7156 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
7157 with the same message size as in ssl3_get_certificate_request().
7158 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
7159 messages might inadvertently be reject as too long.
7160 [Petr Lampa <lampa@fee.vutbr.cz>]
7162 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
7165 *) Modified SSL library such that the verify_callback that has been set
7166 specificly for an SSL object with SSL_set_verify() is actually being
7167 used. Before the change, a verify_callback set with this function was
7168 ignored and the verify_callback() set in the SSL_CTX at the time of
7169 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
7170 to allow the necessary settings.
7173 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
7174 explicitly to NULL, as at least on Solaris 8 this seems not always to be
7175 done automatically (in contradiction to the requirements of the C
7176 standard). This made problems when used from OpenSSH.
7179 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
7180 dh->length and always used
7182 BN_rand_range(priv_key, dh->p).
7184 BN_rand_range() is not necessary for Diffie-Hellman, and this
7185 specific range makes Diffie-Hellman unnecessarily inefficient if
7186 dh->length (recommended exponent length) is much smaller than the
7187 length of dh->p. We could use BN_rand_range() if the order of
7188 the subgroup was stored in the DH structure, but we only have
7193 BN_rand(priv_key, l, ...)
7195 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
7201 RSA_eay_public_encrypt
7202 RSA_eay_private_decrypt
7203 RSA_eay_private_encrypt (signing)
7204 RSA_eay_public_decrypt (signature verification)
7206 (default implementations for RSA_public_encrypt,
7207 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
7208 always reject numbers >= n.
7211 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
7212 to synchronize access to 'locking_thread'. This is necessary on
7213 systems where access to 'locking_thread' (an 'unsigned long'
7214 variable) is not atomic.
7217 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
7218 *before* setting the 'crypto_lock_rand' flag. The previous code had
7219 a race condition if 0 is a valid thread ID.
7220 [Travis Vitek <vitek@roguewave.com>]
7222 *) Add support for shared libraries under Irix.
7223 [Albert Chin-A-Young <china@thewrittenword.com>]
7225 *) Add configuration option to build on Linux on both big-endian and
7227 [Ralf Baechle <ralf@uni-koblenz.de>]
7229 *) Add the possibility to create shared libraries on HP-UX.
7232 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
7234 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
7235 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
7236 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
7237 PRNG state recovery was possible based on the output of
7238 one PRNG request appropriately sized to gain knowledge on
7239 'md' followed by enough consecutive 1-byte PRNG requests
7240 to traverse all of 'state'.
7242 1. When updating 'md_local' (the current thread's copy of 'md')
7243 during PRNG output generation, hash all of the previous
7244 'md_local' value, not just the half used for PRNG output.
7246 2. Make the number of bytes from 'state' included into the hash
7247 independent from the number of PRNG bytes requested.
7249 The first measure alone would be sufficient to avoid
7250 Markku-Juhani's attack. (Actually it had never occurred
7251 to me that the half of 'md_local' used for chaining was the
7252 half from which PRNG output bytes were taken -- I had always
7253 assumed that the secret half would be used.) The second
7254 measure makes sure that additional data from 'state' is never
7255 mixed into 'md_local' in small portions; this heuristically
7256 further strengthens the PRNG.
7259 *) Fix crypto/bn/asm/mips3.s.
7262 *) When only the key is given to "enc", the IV is undefined. Print out
7263 an error message in this case.
7266 *) Handle special case when X509_NAME is empty in X509 printing routines.
7269 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
7270 positive and less than q.
7273 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
7274 used: it isn't thread safe and the add_lock_callback should handle
7276 [Paul Rose <Paul.Rose@bridge.com>]
7278 *) Verify that incoming data obeys the block size in
7279 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
7283 [Ulf Möller, Bodo Möller]
7285 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
7286 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
7287 when fixing the server behaviour for backwards-compatible 'client
7288 hello' messages. (Note that the attack is impractical against
7289 SSL 3.0 and TLS 1.0 anyway because length and version checking
7290 means that the probability of guessing a valid ciphertext is
7291 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
7294 Before 0.9.5, the countermeasure (hide the error by generating a
7295 random 'decryption result') did not work properly because
7296 ERR_clear_error() was missing, meaning that SSL_get_error() would
7297 detect the supposedly ignored error.
7299 Both problems are now fixed.
7302 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
7303 (previously it was 1024).
7306 *) Fix for compatibility mode trust settings: ignore trust settings
7307 unless some valid trust or reject settings are present.
7310 *) Fix for blowfish EVP: its a variable length cipher.
7313 *) Fix various bugs related to DSA S/MIME verification. Handle missing
7314 parameters in DSA public key structures and return an error in the
7315 DSA routines if parameters are absent.
7318 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
7319 in the current directory if neither $RANDFILE nor $HOME was set.
7320 RAND_file_name() in 0.9.6a returned NULL in this case. This has
7321 caused some confusion to Windows users who haven't defined $HOME.
7322 Thus RAND_file_name() is changed again: e_os.h can define a
7323 DEFAULT_HOME, which will be used if $HOME is not set.
7324 For Windows, we use "C:"; on other platforms, we still require
7325 environment variables.
7327 *) Move 'if (!initialized) RAND_poll()' into regions protected by
7328 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
7329 having multiple threads call RAND_poll() concurrently.
7332 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
7333 combination of a flag and a thread ID variable.
7334 Otherwise while one thread is in ssleay_rand_bytes (which sets the
7335 flag), *other* threads can enter ssleay_add_bytes without obeying
7336 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
7337 that they do not hold after the first thread unsets add_do_not_lock).
7340 *) Change bctest again: '-x' expressions are not available in all
7344 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
7346 *) Fix a couple of memory leaks in PKCS7_dataDecode()
7347 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
7349 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
7350 the default extension for executables, if any. Also, make the perl
7351 scripts that use symlink() to test if it really exists and use "cp"
7352 if it doesn't. All this made OpenSSL compilable and installable in
7356 *) Fix for asn1_GetSequence() for indefinite length constructed data.
7357 If SEQUENCE is length is indefinite just set c->slen to the total
7358 amount of data available.
7359 [Steve Henson, reported by shige@FreeBSD.org]
7360 [This change does not apply to 0.9.7.]
7362 *) Change bctest to avoid here-documents inside command substitution
7363 (workaround for FreeBSD /bin/sh bug).
7364 For compatibility with Ultrix, avoid shell functions (introduced
7365 in the bctest version that searches along $PATH).
7368 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
7369 with des_encrypt() defined on some operating systems, like Solaris
7373 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
7374 On the Importance of Eliminating Errors in Cryptographic
7375 Computations, J. Cryptology 14 (2001) 2, 101-119,
7376 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
7379 *) MIPS assembler BIGNUM division bug fix.
7382 *) Disabled incorrect Alpha assembler code.
7385 *) Fix PKCS#7 decode routines so they correctly update the length
7386 after reading an EOC for the EXPLICIT tag.
7388 [This change does not apply to 0.9.7.]
7390 *) Fix bug in PKCS#12 key generation routines. This was triggered
7391 if a 3DES key was generated with a 0 initial byte. Include
7392 PKCS12_BROKEN_KEYGEN compilation option to retain the old
7393 (but broken) behaviour.
7396 *) Enhance bctest to search for a working bc along $PATH and print
7398 [Tim Rice <tim@multitalents.net> via Richard Levitte]
7400 *) Fix memory leaks in err.c: free err_data string if necessary;
7401 don't write to the wrong index in ERR_set_error_data.
7404 *) Implement ssl23_peek (analogous to ssl23_read), which previously
7408 *) Replace rdtsc with _emit statements for VC++ version 5.
7409 [Jeremy Cooper <jeremy@baymoo.org>]
7411 *) Make it possible to reuse SSLv2 sessions.
7414 *) In copy_email() check for >= 0 as a return value for
7415 X509_NAME_get_index_by_NID() since 0 is a valid index.
7416 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
7418 *) Avoid coredump with unsupported or invalid public keys by checking if
7419 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
7420 PKCS7_verify() fails with non detached data.
7423 *) Don't use getenv in library functions when run as setuid/setgid.
7424 New function OPENSSL_issetugid().
7427 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
7428 due to incorrect handling of multi-threading:
7430 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
7432 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
7434 3. Count how many times MemCheck_off() has been called so that
7435 nested use can be treated correctly. This also avoids
7436 inband-signalling in the previous code (which relied on the
7437 assumption that thread ID 0 is impossible).
7440 *) Add "-rand" option also to s_client and s_server.
7443 *) Fix CPU detection on Irix 6.x.
7444 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
7445 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7447 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
7450 [This change does not apply to 0.9.7.]
7452 *) Use the cached encoding of an X509_NAME structure rather than
7453 copying it. This is apparently the reason for the libsafe "errors"
7454 but the code is actually correct.
7457 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
7458 Bleichenbacher's DSA attack.
7459 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
7460 to be set and top=0 forces the highest bit to be set; top=-1 is new
7461 and leaves the highest bit random.
7462 [Ulf Moeller, Bodo Moeller]
7464 *) In the NCONF_...-based implementations for CONF_... queries
7465 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
7466 a temporary CONF structure with the data component set to NULL
7467 (which gives segmentation faults in lh_retrieve).
7468 Instead, use NULL for the CONF pointer in CONF_get_string and
7469 CONF_get_number (which may use environment variables) and directly
7470 return NULL from CONF_get_section.
7473 *) Fix potential buffer overrun for EBCDIC.
7476 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
7477 keyUsage if basicConstraints absent for a CA.
7480 *) Make SMIME_write_PKCS7() write mail header values with a format that
7481 is more generally accepted (no spaces before the semicolon), since
7482 some programs can't parse those values properly otherwise. Also make
7483 sure BIO's that break lines after each write do not create invalid
7487 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
7488 macros previously used would not encode an empty SEQUENCE OF
7489 and break the signature.
7491 [This change does not apply to 0.9.7.]
7493 *) Zero the premaster secret after deriving the master secret in
7497 *) Add some EVP_add_digest_alias registrations (as found in
7498 OpenSSL_add_all_digests()) to SSL_library_init()
7499 aka OpenSSL_add_ssl_algorithms(). This provides improved
7500 compatibility with peers using X.509 certificates
7501 with unconventional AlgorithmIdentifier OIDs.
7504 *) Fix for Irix with NO_ASM.
7505 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
7507 *) ./config script fixes.
7508 [Ulf Moeller, Richard Levitte]
7510 *) Fix 'openssl passwd -1'.
7513 *) Change PKCS12_key_gen_asc() so it can cope with non null
7514 terminated strings whose length is passed in the passlen
7515 parameter, for example from PEM callbacks. This was done
7516 by adding an extra length parameter to asc2uni().
7517 [Steve Henson, reported by <oddissey@samsung.co.kr>]
7519 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
7520 call failed, free the DSA structure.
7523 *) Fix to uni2asc() to cope with zero length Unicode strings.
7524 These are present in some PKCS#12 files.
7527 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
7528 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
7529 when writing a 32767 byte record.
7530 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
7532 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
7533 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
7535 (RSA objects have a reference count access to which is protected
7536 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
7537 so they are meant to be shared between threads.)
7538 [Bodo Moeller, Geoff Thorpe; original patch submitted by
7539 "Reddie, Steven" <Steven.Reddie@ca.com>]
7541 *) Fix a deadlock in CRYPTO_mem_leaks().
7544 *) Use better test patterns in bntest.
7547 *) rand_win.c fix for Borland C.
7550 *) BN_rshift bugfix for n == 0.
7553 *) Add a 'bctest' script that checks for some known 'bc' bugs
7554 so that 'make test' does not abort just because 'bc' is broken.
7557 *) Store verify_result within SSL_SESSION also for client side to
7558 avoid potential security hole. (Re-used sessions on the client side
7559 always resulted in verify_result==X509_V_OK, not using the original
7560 result of the server certificate verification.)
7563 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
7564 SSL3_RT_APPLICATION_DATA, return 0.
7565 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
7569 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
7570 releases, have been re-implemented by renaming the previous
7571 implementations of ssl2_read and ssl3_read to ssl2_read_internal
7572 and ssl3_read_internal, respectively, and adding 'peek' parameters
7573 to them. The new ssl[23]_{read,peek} functions are calls to
7574 ssl[23]_read_internal with the 'peek' flag set appropriately.
7575 A 'peek' parameter has also been added to ssl3_read_bytes, which
7576 does the actual work for ssl3_read_internal.
7579 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
7580 the method-specific "init()" handler. Also clean up ex_data after
7581 calling the method-specific "finish()" handler. Previously, this was
7582 happening the other way round.
7585 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
7586 The previous value, 12, was not always sufficient for BN_mod_exp().
7589 *) Make sure that shared libraries get the internal name engine with
7590 the full version number and not just 0. This should mark the
7591 shared libraries as not backward compatible. Of course, this should
7592 be changed again when we can guarantee backward binary compatibility.
7595 *) Fix typo in get_cert_by_subject() in by_dir.c
7596 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
7598 *) Rework the system to generate shared libraries:
7600 - Make note of the expected extension for the shared libraries and
7601 if there is a need for symbolic links from for example libcrypto.so.0
7602 to libcrypto.so.0.9.7. There is extended info in Configure for
7605 - Make as few rebuilds of the shared libraries as possible.
7607 - Still avoid linking the OpenSSL programs with the shared libraries.
7609 - When installing, install the shared libraries separately from the
7613 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
7615 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
7616 and not in SSL_clear because the latter is also used by the
7617 accept/connect functions; previously, the settings made by
7618 SSL_set_read_ahead would be lost during the handshake.
7619 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
7621 *) Correct util/mkdef.pl to be selective about disabled algorithms.
7622 Previously, it would create entries for disabled algorithms no
7626 *) Added several new manual pages for SSL_* function.
7629 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
7631 *) In ssl23_get_client_hello, generate an error message when faced
7632 with an initial SSL 3.0/TLS record that is too small to contain the
7633 first two bytes of the ClientHello message, i.e. client_version.
7634 (Note that this is a pathologic case that probably has never happened
7635 in real life.) The previous approach was to use the version number
7636 from the record header as a substitute; but our protocol choice
7637 should not depend on that one because it is not authenticated
7638 by the Finished messages.
7641 *) More robust randomness gathering functions for Windows.
7642 [Jeffrey Altman <jaltman@columbia.edu>]
7644 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
7645 not set then we don't setup the error code for issuer check errors
7646 to avoid possibly overwriting other errors which the callback does
7647 handle. If an application does set the flag then we assume it knows
7648 what it is doing and can handle the new informational codes
7652 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
7653 a general "ANY" type, as such it should be able to decode anything
7654 including tagged types. However it didn't check the class so it would
7655 wrongly interpret tagged types in the same way as their universal
7656 counterpart and unknown types were just rejected. Changed so that the
7657 tagged and unknown types are handled in the same way as a SEQUENCE:
7658 that is the encoding is stored intact. There is also a new type
7659 "V_ASN1_OTHER" which is used when the class is not universal, in this
7660 case we have no idea what the actual type is so we just lump them all
7664 *) On VMS, stdout may very well lead to a file that is written to
7665 in a record-oriented fashion. That means that every write() will
7666 write a separate record, which will be read separately by the
7667 programs trying to read from it. This can be very confusing.
7669 The solution is to put a BIO filter in the way that will buffer
7670 text until a linefeed is reached, and then write everything a
7671 line at a time, so every record written will be an actual line,
7672 not chunks of lines and not (usually doesn't happen, but I've
7673 seen it once) several lines in one record. BIO_f_linebuffer() is
7676 Currently, it's a VMS-only method, because that's where it has
7677 been tested well enough.
7680 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
7681 it can return incorrect results.
7682 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
7683 but it was in 0.9.6-beta[12].)
7686 *) Disable the check for content being present when verifying detached
7687 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
7688 include zero length content when signing messages.
7691 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
7692 BIO_ctrl (for BIO pairs).
7695 *) Add DSO method for VMS.
7698 *) Bug fix: Montgomery multiplication could produce results with the
7702 *) Add RPM specification openssl.spec and modify it to build three
7703 packages. The default package contains applications, application
7704 documentation and run-time libraries. The devel package contains
7705 include files, static libraries and function documentation. The
7706 doc package contains the contents of the doc directory. The original
7707 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
7710 *) Add a large number of documentation files for many SSL routines.
7711 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7713 *) Add a configuration entry for Sony News 4.
7714 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
7716 *) Don't set the two most significant bits to one when generating a
7717 random number < q in the DSA library.
7720 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
7721 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
7722 the underlying transport is blocking) if a handshake took place.
7723 (The default behaviour is needed by applications such as s_client
7724 and s_server that use select() to determine when to use SSL_read;
7725 but for applications that know in advance when to expect data, it
7726 just makes things more complicated.)
7729 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
7733 *) Add a few more EBCDIC conditionals that make `req' and `x509'
7734 work better on such systems.
7735 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7737 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
7738 Update PKCS12_parse() so it copies the friendlyName and the
7739 keyid to the certificates aux info.
7742 *) Fix bug in PKCS7_verify() which caused an infinite loop
7743 if there was more than one signature.
7744 [Sven Uszpelkat <su@celocom.de>]
7746 *) Major change in util/mkdef.pl to include extra information
7747 about each symbol, as well as presenting variables as well
7748 as functions. This change means that there's n more need
7749 to rebuild the .num files when some algorithms are excluded.
7752 *) Allow the verify time to be set by an application,
7753 rather than always using the current time.
7756 *) Phase 2 verify code reorganisation. The certificate
7757 verify code now looks up an issuer certificate by a
7758 number of criteria: subject name, authority key id
7759 and key usage. It also verifies self signed certificates
7760 by the same criteria. The main comparison function is
7761 X509_check_issued() which performs these checks.
7763 Lot of changes were necessary in order to support this
7764 without completely rewriting the lookup code.
7766 Authority and subject key identifier are now cached.
7768 The LHASH 'certs' is X509_STORE has now been replaced
7769 by a STACK_OF(X509_OBJECT). This is mainly because an
7770 LHASH can't store or retrieve multiple objects with
7771 the same hash value.
7773 As a result various functions (which were all internal
7774 use only) have changed to handle the new X509_STORE
7775 structure. This will break anything that messed round
7776 with X509_STORE internally.
7778 The functions X509_STORE_add_cert() now checks for an
7779 exact match, rather than just subject name.
7781 The X509_STORE API doesn't directly support the retrieval
7782 of multiple certificates matching a given criteria, however
7783 this can be worked round by performing a lookup first
7784 (which will fill the cache with candidate certificates)
7785 and then examining the cache for matches. This is probably
7786 the best we can do without throwing out X509_LOOKUP
7787 entirely (maybe later...).
7789 The X509_VERIFY_CTX structure has been enhanced considerably.
7791 All certificate lookup operations now go via a get_issuer()
7792 callback. Although this currently uses an X509_STORE it
7793 can be replaced by custom lookups. This is a simple way
7794 to bypass the X509_STORE hackery necessary to make this
7795 work and makes it possible to use more efficient techniques
7796 in future. A very simple version which uses a simple
7797 STACK for its trusted certificate store is also provided
7798 using X509_STORE_CTX_trusted_stack().
7800 The verify_cb() and verify() callbacks now have equivalents
7801 in the X509_STORE_CTX structure.
7803 X509_STORE_CTX also has a 'flags' field which can be used
7804 to customise the verify behaviour.
7807 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
7808 excludes S/MIME capabilities.
7811 *) When a certificate request is read in keep a copy of the
7812 original encoding of the signed data and use it when outputing
7813 again. Signatures then use the original encoding rather than
7814 a decoded, encoded version which may cause problems if the
7815 request is improperly encoded.
7818 *) For consistency with other BIO_puts implementations, call
7819 buffer_write(b, ...) directly in buffer_puts instead of calling
7822 In BIO_puts, increment b->num_write as in BIO_write.
7823 [Peter.Sylvester@EdelWeb.fr]
7825 *) Fix BN_mul_word for the case where the word is 0. (We have to use
7826 BN_zero, we may not return a BIGNUM with an array consisting of
7830 *) Avoid calling abort() from within the library when problems are
7831 detected, except if preprocessor symbols have been defined
7832 (such as REF_CHECK, BN_DEBUG etc.).
7835 *) New openssl application 'rsautl'. This utility can be
7836 used for low level RSA operations. DER public key
7837 BIO/fp routines also added.
7840 *) New Configure entry and patches for compiling on QNX 4.
7841 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
7843 *) A demo state-machine implementation was sponsored by
7844 Nuron (http://www.nuron.com/) and is now available in
7845 demos/state_machine.
7848 *) New options added to the 'dgst' utility for signature
7849 generation and verification.
7852 *) Unrecognized PKCS#7 content types are now handled via a
7853 catch all ASN1_TYPE structure. This allows unsupported
7854 types to be stored as a "blob" and an application can
7855 encode and decode it manually.
7858 *) Fix various signed/unsigned issues to make a_strex.c
7860 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
7862 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
7863 length if passed a buffer. ASN1_INTEGER_to_BN failed
7864 if passed a NULL BN and its argument was negative.
7865 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
7867 *) Modification to PKCS#7 encoding routines to output definite
7868 length encoding. Since currently the whole structures are in
7869 memory there's not real point in using indefinite length
7870 constructed encoding. However if OpenSSL is compiled with
7871 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
7874 *) Added BIO_vprintf() and BIO_vsnprintf().
7877 *) Added more prefixes to parse for in the the strings written
7878 through a logging bio, to cover all the levels that are available
7879 through syslog. The prefixes are now:
7881 PANIC, EMERG, EMR => LOG_EMERG
7882 ALERT, ALR => LOG_ALERT
7883 CRIT, CRI => LOG_CRIT
7884 ERROR, ERR => LOG_ERR
7885 WARNING, WARN, WAR => LOG_WARNING
7886 NOTICE, NOTE, NOT => LOG_NOTICE
7887 INFO, INF => LOG_INFO
7888 DEBUG, DBG => LOG_DEBUG
7890 and as before, if none of those prefixes are present at the
7891 beginning of the string, LOG_ERR is chosen.
7893 On Win32, the LOG_* levels are mapped according to this:
7895 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
7896 LOG_WARNING => EVENTLOG_WARNING_TYPE
7897 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
7901 *) Made it possible to reconfigure with just the configuration
7902 argument "reconf" or "reconfigure". The command line arguments
7903 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
7904 and are retrieved from there when reconfiguring.
7908 [Assar Westerlund <assar@sics.se>, Richard Levitte]
7910 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
7913 *) The obj_dat.pl script was messing up the sorting of object
7914 names. The reason was that it compared the quoted version
7915 of strings as a result "OCSP" > "OCSP Signing" because
7916 " > SPACE. Changed script to store unquoted versions of
7917 names and add quotes on output. It was also omitting some
7918 names from the lookup table if they were given a default
7919 value (that is if SN is missing it is given the same
7920 value as LN and vice versa), these are now added on the
7921 grounds that if an object has a name we should be able to
7922 look it up. Finally added warning output when duplicate
7923 short or long names are found.
7926 *) Changes needed for Tandem NSK.
7927 [Scott Uroff <scott@xypro.com>]
7929 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
7930 RSA_padding_check_SSLv23(), special padding was never detected
7931 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
7932 version rollback attacks was not effective.
7934 In s23_clnt.c, don't use special rollback-attack detection padding
7935 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
7936 client; similarly, in s23_srvr.c, don't do the rollback check if
7937 SSL 2.0 is the only protocol enabled in the server.
7940 *) Make it possible to get hexdumps of unprintable data with 'openssl
7941 asn1parse'. By implication, the functions ASN1_parse_dump() and
7942 BIO_dump_indent() are added.
7945 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
7946 these print out strings and name structures based on various
7947 flags including RFC2253 support and proper handling of
7948 multibyte characters. Added options to the 'x509' utility
7949 to allow the various flags to be set.
7952 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
7953 Also change the functions X509_cmp_current_time() and
7954 X509_gmtime_adj() work with an ASN1_TIME structure,
7955 this will enable certificates using GeneralizedTime in validity
7956 dates to be checked.
7959 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
7960 negative public key encodings) on by default,
7961 NO_NEG_PUBKEY_BUG can be set to disable it.
7964 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
7965 content octets. An i2c_ASN1_OBJECT is unnecessary because
7966 the encoding can be trivially obtained from the structure.
7969 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
7970 not read locks (CRYPTO_r_[un]lock).
7973 *) A first attempt at creating official support for shared
7974 libraries through configuration. I've kept it so the
7975 default is static libraries only, and the OpenSSL programs
7976 are always statically linked for now, but there are
7977 preparations for dynamic linking in place.
7978 This has been tested on Linux and Tru64.
7981 *) Randomness polling function for Win9x, as described in:
7982 Peter Gutmann, Software Generation of Practically Strong
7986 *) Fix so PRNG is seeded in req if using an already existing
7990 *) New options to smime application. -inform and -outform
7991 allow alternative formats for the S/MIME message including
7992 PEM and DER. The -content option allows the content to be
7993 specified separately. This should allow things like Netscape
7994 form signing output easier to verify.
7997 *) Fix the ASN1 encoding of tags using the 'long form'.
8000 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
8001 STRING types. These convert content octets to and from the
8002 underlying type. The actual tag and length octets are
8003 already assumed to have been read in and checked. These
8004 are needed because all other string types have virtually
8005 identical handling apart from the tag. By having versions
8006 of the ASN1 functions that just operate on content octets
8007 IMPLICIT tagging can be handled properly. It also allows
8008 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
8009 and ASN1_INTEGER are identical apart from the tag.
8012 *) Change the handling of OID objects as follows:
8014 - New object identifiers are inserted in objects.txt, following
8015 the syntax given in objects.README.
8016 - objects.pl is used to process obj_mac.num and create a new
8018 - obj_dat.pl is used to create a new obj_dat.h, using the data in
8021 This is currently kind of a hack, and the perl code in objects.pl
8022 isn't very elegant, but it works as I intended. The simplest way
8023 to check that it worked correctly is to look in obj_dat.h and
8024 check the array nid_objs and make sure the objects haven't moved
8025 around (this is important!). Additions are OK, as well as
8026 consistent name changes.
8029 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
8032 *) Addition of the command line parameter '-rand file' to 'openssl req'.
8033 The given file adds to whatever has already been seeded into the
8034 random pool through the RANDFILE configuration file option or
8035 environment variable, or the default random state file.
8038 *) mkstack.pl now sorts each macro group into lexical order.
8039 Previously the output order depended on the order the files
8040 appeared in the directory, resulting in needless rewriting
8044 *) Patches to make OpenSSL compile under Win32 again. Mostly
8045 work arounds for the VC++ problem that it treats func() as
8046 func(void). Also stripped out the parts of mkdef.pl that
8047 added extra typesafe functions: these no longer exist.
8050 *) Reorganisation of the stack code. The macros are now all
8051 collected in safestack.h . Each macro is defined in terms of
8052 a "stack macro" of the form SKM_<name>(type, a, b). The
8053 DEBUG_SAFESTACK is now handled in terms of function casts,
8054 this has the advantage of retaining type safety without the
8055 use of additional functions. If DEBUG_SAFESTACK is not defined
8056 then the non typesafe macros are used instead. Also modified the
8057 mkstack.pl script to handle the new form. Needs testing to see
8058 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
8059 the default if no major problems. Similar behaviour for ASN1_SET_OF
8060 and PKCS12_STACK_OF.
8063 *) When some versions of IIS use the 'NET' form of private key the
8064 key derivation algorithm is different. Normally MD5(password) is
8065 used as a 128 bit RC4 key. In the modified case
8066 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
8067 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
8068 as the old Netscape_RSA functions except they have an additional
8069 'sgckey' parameter which uses the modified algorithm. Also added
8070 an -sgckey command line option to the rsa utility. Thanks to
8071 Adrian Peck <bertie@ncipher.com> for posting details of the modified
8072 algorithm to openssl-dev.
8075 *) The evp_local.h macros were using 'c.##kname' which resulted in
8076 invalid expansion on some systems (SCO 5.0.5 for example).
8077 Corrected to 'c.kname'.
8078 [Phillip Porch <root@theporch.com>]
8080 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
8081 a STACK of email addresses from a certificate or request, these look
8082 in the subject name and the subject alternative name extensions and
8083 omit any duplicate addresses.
8086 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
8087 This makes DSA verification about 2 % faster.
8090 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
8091 (meaning that now 2^5 values will be precomputed, which is only 4 KB
8092 plus overhead for 1024 bit moduli).
8093 This makes exponentiations about 0.5 % faster for 1024 bit
8094 exponents (as measured by "openssl speed rsa2048").
8097 *) Rename memory handling macros to avoid conflicts with other
8099 Malloc => OPENSSL_malloc
8100 Malloc_locked => OPENSSL_malloc_locked
8101 Realloc => OPENSSL_realloc
8102 Free => OPENSSL_free
8105 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
8106 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
8109 *) CygWin32 support.
8110 [John Jarvie <jjarvie@newsguy.com>]
8112 *) The type-safe stack code has been rejigged. It is now only compiled
8113 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
8114 by default all type-specific stack functions are "#define"d back to
8115 standard stack functions. This results in more streamlined output
8116 but retains the type-safety checking possibilities of the original
8120 *) The STACK code has been cleaned up, and certain type declarations
8121 that didn't make a lot of sense have been brought in line. This has
8122 also involved a cleanup of sorts in safestack.h to more correctly
8123 map type-safe stack functions onto their plain stack counterparts.
8124 This work has also resulted in a variety of "const"ifications of
8125 lots of the code, especially "_cmp" operations which should normally
8126 be prototyped with "const" parameters anyway.
8129 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
8130 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
8131 (The PRNG state consists of two parts, the large pool 'state' and 'md',
8132 where all of 'md' is used each time the PRNG is used, but 'state'
8133 is used only indexed by a cyclic counter. As entropy may not be
8134 well distributed from the beginning, 'md' is important as a
8135 chaining variable. However, the output function chains only half
8136 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
8137 all of 'md', and seeding with STATE_SIZE dummy bytes will result
8138 in all of 'state' being rewritten, with the new values depending
8139 on virtually all of 'md'. This overcomes the 80 bit limitation.)
8142 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
8143 the handshake is continued after ssl_verify_cert_chain();
8144 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
8145 can lead to 'unexplainable' connection aborts later.
8146 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
8148 *) Major EVP API cipher revision.
8149 Add hooks for extra EVP features. This allows various cipher
8150 parameters to be set in the EVP interface. Support added for variable
8151 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
8152 setting of RC2 and RC5 parameters.
8154 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
8157 Remove lots of duplicated code from the EVP library. For example *every*
8158 cipher init() function handles the 'iv' in the same way according to the
8159 cipher mode. They also all do nothing if the 'key' parameter is NULL and
8160 for CFB and OFB modes they zero ctx->num.
8162 New functionality allows removal of S/MIME code RC2 hack.
8164 Most of the routines have the same form and so can be declared in terms
8167 By shifting this to the top level EVP_CipherInit() it can be removed from
8168 all individual ciphers. If the cipher wants to handle IVs or keys
8169 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
8172 Change lots of functions like EVP_EncryptUpdate() to now return a
8173 value: although software versions of the algorithms cannot fail
8174 any installed hardware versions can.
8177 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
8178 this option is set, tolerate broken clients that send the negotiated
8179 protocol version number instead of the requested protocol version
8183 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
8184 i.e. non-zero for export ciphersuites, zero otherwise.
8185 Previous versions had this flag inverted, inconsistent with
8186 rsa_tmp_cb (..._TMP_RSA_CB).
8187 [Bodo Moeller; problem reported by Amit Chopra]
8189 *) Add missing DSA library text string. Work around for some IIS
8190 key files with invalid SEQUENCE encoding.
8193 *) Add a document (doc/standards.txt) that list all kinds of standards
8194 and so on that are implemented in OpenSSL.
8197 *) Enhance c_rehash script. Old version would mishandle certificates
8198 with the same subject name hash and wouldn't handle CRLs at all.
8199 Added -fingerprint option to crl utility, to support new c_rehash
8203 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
8206 *) Fix for SSL server purpose checking. Server checking was
8207 rejecting certificates which had extended key usage present
8208 but no ssl client purpose.
8209 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
8211 *) Make PKCS#12 code work with no password. The PKCS#12 spec
8212 is a little unclear about how a blank password is handled.
8213 Since the password in encoded as a BMPString with terminating
8214 double NULL a zero length password would end up as just the
8215 double NULL. However no password at all is different and is
8216 handled differently in the PKCS#12 key generation code. NS
8217 treats a blank password as zero length. MSIE treats it as no
8218 password on export: but it will try both on import. We now do
8219 the same: PKCS12_parse() tries zero length and no password if
8220 the password is set to "" or NULL (NULL is now a valid password:
8221 it wasn't before) as does the pkcs12 application.
8224 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
8225 perror when PEM_read_bio_X509_REQ fails, the error message must
8226 be obtained from the error queue.
8229 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
8230 it in ERR_remove_state if appropriate, and change ERR_get_state
8231 accordingly to avoid race conditions (this is necessary because
8232 thread_hash is no longer constant once set).
8235 *) Bugfix for linux-elf makefile.one.
8238 *) RSA_get_default_method() will now cause a default
8239 RSA_METHOD to be chosen if one doesn't exist already.
8240 Previously this was only set during a call to RSA_new()
8241 or RSA_new_method(NULL) meaning it was possible for
8242 RSA_get_default_method() to return NULL.
8245 *) Added native name translation to the existing DSO code
8246 that will convert (if the flag to do so is set) filenames
8247 that are sufficiently small and have no path information
8248 into a canonical native form. Eg. "blah" converted to
8249 "libblah.so" or "blah.dll" etc.
8252 *) New function ERR_error_string_n(e, buf, len) which is like
8253 ERR_error_string(e, buf), but writes at most 'len' bytes
8254 including the 0 terminator. For ERR_error_string_n, 'buf'
8256 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
8258 *) CONF library reworked to become more general. A new CONF
8259 configuration file reader "class" is implemented as well as a
8260 new functions (NCONF_*, for "New CONF") to handle it. The now
8261 old CONF_* functions are still there, but are reimplemented to
8262 work in terms of the new functions. Also, a set of functions
8263 to handle the internal storage of the configuration data is
8264 provided to make it easier to write new configuration file
8265 reader "classes" (I can definitely see something reading a
8266 configuration file in XML format, for example), called _CONF_*,
8267 or "the configuration storage API"...
8269 The new configuration file reading functions are:
8271 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
8272 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
8274 NCONF_default, NCONF_WIN32
8276 NCONF_dump_fp, NCONF_dump_bio
8278 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
8279 NCONF_new creates a new CONF object. This works in the same way
8280 as other interfaces in OpenSSL, like the BIO interface.
8281 NCONF_dump_* dump the internal storage of the configuration file,
8282 which is useful for debugging. All other functions take the same
8283 arguments as the old CONF_* functions wth the exception of the
8284 first that must be a `CONF *' instead of a `LHASH *'.
8286 To make it easer to use the new classes with the old CONF_* functions,
8287 the function CONF_set_default_method is provided.
8290 *) Add '-tls1' option to 'openssl ciphers', which was already
8291 mentioned in the documentation but had not been implemented.
8292 (This option is not yet really useful because even the additional
8293 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
8296 *) Initial DSO code added into libcrypto for letting OpenSSL (and
8297 OpenSSL-based applications) load shared libraries and bind to
8298 them in a portable way.
8299 [Geoff Thorpe, with contributions from Richard Levitte]
8301 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
8303 *) Make sure _lrotl and _lrotr are only used with MSVC.
8305 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
8306 (the default implementation of RAND_status).
8308 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
8309 to '-clrext' (= clear extensions), as intended and documented.
8310 [Bodo Moeller; inconsistency pointed out by Michael Attili
8313 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
8314 was larger than the MD block size.
8315 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
8317 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
8318 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
8319 using the passed key: if the passed key was a private key the result
8320 of X509_print(), for example, would be to print out all the private key
8324 *) des_quad_cksum() byte order bug fix.
8325 [Ulf Möller, using the problem description in krb4-0.9.7, where
8326 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
8328 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
8330 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
8332 *) For easily testing in shell scripts whether some command
8333 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
8334 returns with exit code 0 iff no command of the given name is available.
8335 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
8336 the output goes to stdout and nothing is printed to stderr.
8337 Additional arguments are always ignored.
8339 Since for each cipher there is a command of the same name,
8340 the 'no-cipher' compilation switches can be tested this way.
8342 ('openssl no-XXX' is not able to detect pseudo-commands such
8343 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
8346 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
8349 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
8350 is set; it will be thrown away anyway because each handshake creates
8352 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
8353 to parameters -- in previous versions (since OpenSSL 0.9.3) the
8354 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
8355 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
8358 *) New s_client option -ign_eof: EOF at stdin is ignored, and
8359 'Q' and 'R' lose their special meanings (quit/renegotiate).
8360 This is part of what -quiet does; unlike -quiet, -ign_eof
8361 does not suppress any output.
8364 *) Add compatibility options to the purpose and trust code. The
8365 purpose X509_PURPOSE_ANY is "any purpose" which automatically
8366 accepts a certificate or CA, this was the previous behaviour,
8367 with all the associated security issues.
8369 X509_TRUST_COMPAT is the old trust behaviour: only and
8370 automatically trust self signed roots in certificate store. A
8371 new trust setting X509_TRUST_DEFAULT is used to specify that
8372 a purpose has no associated trust setting and it should instead
8373 use the value in the default purpose.
8376 *) Fix the PKCS#8 DSA private key code so it decodes keys again
8377 and fix a memory leak.
8380 *) In util/mkerr.pl (which implements 'make errors'), preserve
8381 reason strings from the previous version of the .c file, as
8382 the default to have only downcase letters (and digits) in
8383 automatically generated reasons codes is not always appropriate.
8386 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
8387 using strerror. Previously, ERR_reason_error_string() returned
8388 library names as reason strings for SYSerr; but SYSerr is a special
8389 case where small numbers are errno values, not library numbers.
8392 *) Add '-dsaparam' option to 'openssl dhparam' application. This
8393 converts DSA parameters into DH parameters. (When creating parameters,
8394 DSA_generate_parameters is used.)
8397 *) Include 'length' (recommended exponent length) in C code generated
8398 by 'openssl dhparam -C'.
8401 *) The second argument to set_label in perlasm was already being used
8402 so couldn't be used as a "file scope" flag. Moved to third argument
8406 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
8407 instead of RAND_bytes for encryption IVs and salts.
8410 *) Include RAND_status() into RAND_METHOD instead of implementing
8411 it only for md_rand.c Otherwise replacing the PRNG by calling
8412 RAND_set_rand_method would be impossible.
8415 *) Don't let DSA_generate_key() enter an infinite loop if the random
8416 number generation fails.
8419 *) New 'rand' application for creating pseudo-random output.
8422 *) Added configuration support for Linux/IA64
8423 [Rolf Haberrecker <rolf@suse.de>]
8425 *) Assembler module support for Mingw32.
8428 *) Shared library support for HPUX (in shlib/).
8429 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
8431 *) Shared library support for Solaris gcc.
8432 [Lutz Behnke <behnke@trustcenter.de>]
8434 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
8436 *) PKCS7_encrypt() was adding text MIME headers twice because they
8437 were added manually and by SMIME_crlf_copy().
8440 *) In bntest.c don't call BN_rand with zero bits argument.
8441 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
8443 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
8444 case was implemented. This caused BN_div_recp() to fail occasionally.
8447 *) Add an optional second argument to the set_label() in the perl
8448 assembly language builder. If this argument exists and is set
8449 to 1 it signals that the assembler should use a symbol whose
8450 scope is the entire file, not just the current function. This
8451 is needed with MASM which uses the format label:: for this scope.
8452 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
8454 *) Change the ASN1 types so they are typedefs by default. Before
8455 almost all types were #define'd to ASN1_STRING which was causing
8456 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
8460 *) Change names of new functions to the new get1/get0 naming
8461 convention: After 'get1', the caller owns a reference count
8462 and has to call ..._free; 'get0' returns a pointer to some
8463 data structure without incrementing reference counters.
8464 (Some of the existing 'get' functions increment a reference
8465 counter, some don't.)
8466 Similarly, 'set1' and 'add1' functions increase reference
8467 counters or duplicate objects.
8470 *) Allow for the possibility of temp RSA key generation failure:
8471 the code used to assume it always worked and crashed on failure.
8474 *) Fix potential buffer overrun problem in BIO_printf().
8475 [Ulf Möller, using public domain code by Patrick Powell; problem
8476 pointed out by David Sacerdote <das33@cornell.edu>]
8478 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
8479 RAND_egd() and RAND_status(). In the command line application,
8480 the EGD socket can be specified like a seed file using RANDFILE
8484 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
8485 Some CAs (e.g. Verisign) distribute certificates in this form.
8488 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
8489 list to exclude them. This means that no special compilation option
8490 is needed to use anonymous DH: it just needs to be included in the
8494 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
8495 EVP_MD_type. The old functionality is available in a new macro called
8496 EVP_MD_md(). Change code that uses it and update docs.
8499 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
8500 where the 'void *' argument is replaced by a function pointer argument.
8501 Previously 'void *' was abused to point to functions, which works on
8502 many platforms, but is not correct. As these functions are usually
8503 called by macros defined in OpenSSL header files, most source code
8504 should work without changes.
8507 *) <openssl/opensslconf.h> (which is created by Configure) now contains
8508 sections with information on -D... compiler switches used for
8509 compiling the library so that applications can see them. To enable
8510 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
8511 must be defined. E.g.,
8512 #define OPENSSL_ALGORITHM_DEFINES
8513 #include <openssl/opensslconf.h>
8514 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
8515 [Richard Levitte, Ulf and Bodo Möller]
8517 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
8521 *) Change the 'other' type in certificate aux info to a STACK_OF
8522 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
8523 the required ASN1 format: arbitrary types determined by an OID.
8526 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
8527 argument to 'req'. This is not because the function is newer or
8528 better than others it just uses the work 'NEW' in the certificate
8529 request header lines. Some software needs this.
8532 *) Reorganise password command line arguments: now passwords can be
8533 obtained from various sources. Delete the PEM_cb function and make
8534 it the default behaviour: i.e. if the callback is NULL and the
8535 usrdata argument is not NULL interpret it as a null terminated pass
8536 phrase. If usrdata and the callback are NULL then the pass phrase
8537 is prompted for as usual.
8540 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
8541 the support is automatically enabled. The resulting binaries will
8542 autodetect the card and use it if present.
8543 [Ben Laurie and Compaq Inc.]
8545 *) Work around for Netscape hang bug. This sends certificate request
8546 and server done in one record. Since this is perfectly legal in the
8547 SSL/TLS protocol it isn't a "bug" option and is on by default. See
8548 the bugs/SSLv3 entry for more info.
8551 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
8554 *) Add -rand argument to smime and pkcs12 applications and read/write
8558 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
8561 *) Add command line password options to the remaining applications.
8564 *) Bug fix for BN_div_recp() for numerators with an even number of
8568 *) More tests in bntest.c, and changed test_bn output.
8571 *) ./config recognizes MacOS X now.
8574 *) Bug fix for BN_div() when the first words of num and divsor are
8575 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
8578 *) Add support for various broken PKCS#8 formats, and command line
8579 options to produce them.
8582 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
8583 get temporary BIGNUMs from a BN_CTX.
8586 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
8590 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
8591 include a #define from the old name to the new. The original intent
8592 was that statically linked binaries could for example just call
8593 SSLeay_add_all_ciphers() to just add ciphers to the table and not
8594 link with digests. This never worked because SSLeay_add_all_digests()
8595 and SSLeay_add_all_ciphers() were in the same source file so calling
8596 one would link with the other. They are now in separate source files.
8599 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
8602 *) Use a less unusual form of the Miller-Rabin primality test (it used
8603 a binary algorithm for exponentiation integrated into the Miller-Rabin
8604 loop, our standard modexp algorithms are faster).
8607 *) Support for the EBCDIC character set completed.
8608 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
8610 *) Source code cleanups: use const where appropriate, eliminate casts,
8611 use void * instead of char * in lhash.
8614 *) Bugfix: ssl3_send_server_key_exchange was not restartable
8615 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
8616 this the server could overwrite ephemeral keys that the client
8620 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
8621 using 50 iterations of the Rabin-Miller test.
8623 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
8624 iterations of the Rabin-Miller test as required by the appendix
8625 to FIPS PUB 186[-1]) instead of DSA_is_prime.
8626 As BN_is_prime_fasttest includes trial division, DSA parameter
8627 generation becomes much faster.
8629 This implies a change for the callback functions in DSA_is_prime
8630 and DSA_generate_parameters: The callback function is called once
8631 for each positive witness in the Rabin-Miller test, not just
8632 occasionally in the inner loop; and the parameters to the
8633 callback function now provide an iteration count for the outer
8634 loop rather than for the current invocation of the inner loop.
8635 DSA_generate_parameters additionally can call the callback
8636 function with an 'iteration count' of -1, meaning that a
8637 candidate has passed the trial division test (when q is generated
8638 from an application-provided seed, trial division is skipped).
8641 *) New function BN_is_prime_fasttest that optionally does trial
8642 division before starting the Rabin-Miller test and has
8643 an additional BN_CTX * argument (whereas BN_is_prime always
8644 has to allocate at least one BN_CTX).
8645 'callback(1, -1, cb_arg)' is called when a number has passed the
8646 trial division stage.
8649 *) Fix for bug in CRL encoding. The validity dates weren't being handled
8653 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
8656 *) New function BN_pseudo_rand().
8659 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
8660 bignum version of BN_from_montgomery() with the working code from
8661 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
8665 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
8666 made it impossible to use the same SSL_SESSION data structure in
8667 SSL2 clients in multiple threads.
8670 *) The return value of RAND_load_file() no longer counts bytes obtained
8671 by stat(). RAND_load_file(..., -1) is new and uses the complete file
8672 to seed the PRNG (previously an explicit byte count was required).
8673 [Ulf Möller, Bodo Möller]
8675 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
8676 used (char *) instead of (void *) and had casts all over the place.
8679 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
8682 *) Retain source code compatibility for BN_prime_checks macro:
8683 BN_is_prime(..., BN_prime_checks, ...) now uses
8684 BN_prime_checks_for_size to determine the appropriate number of
8685 Rabin-Miller iterations.
8688 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
8689 DH_CHECK_P_NOT_SAFE_PRIME.
8690 (Check if this is true? OpenPGP calls them "strong".)
8693 *) Merge the functionality of "dh" and "gendh" programs into a new program
8694 "dhparam". The old programs are retained for now but will handle DH keys
8695 (instead of parameters) in future.
8698 *) Make the ciphers, s_server and s_client programs check the return values
8699 when a new cipher list is set.
8702 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
8703 ciphers. Before when the 56bit ciphers were enabled the sorting was
8706 The syntax for the cipher sorting has been extended to support sorting by
8707 cipher-strength (using the strength_bits hard coded in the tables).
8708 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
8710 Fix a bug in the cipher-command parser: when supplying a cipher command
8711 string with an "undefined" symbol (neither command nor alphanumeric
8712 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
8713 an error is flagged.
8715 Due to the strength-sorting extension, the code of the
8716 ssl_create_cipher_list() function was completely rearranged. I hope that
8717 the readability was also increased :-)
8718 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
8720 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
8721 for the first serial number and places 2 in the serial number file. This
8722 avoids problems when the root CA is created with serial number zero and
8723 the first user certificate has the same issuer name and serial number
8727 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
8728 the new code. Add documentation for this stuff.
8731 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
8732 X509_*() to X509at_*() on the grounds that they don't handle X509
8733 structures and behave in an analogous way to the X509v3 functions:
8734 they shouldn't be called directly but wrapper functions should be used
8737 So we also now have some wrapper functions that call the X509at functions
8738 when passed certificate requests. (TO DO: similar things can be done with
8739 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
8740 things. Some of these need some d2i or i2d and print functionality
8741 because they handle more complex structures.)
8744 *) Add missing #ifndefs that caused missing symbols when building libssl
8745 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
8746 NO_RSA in ssl/s2*.c.
8747 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
8749 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
8750 has a return value which indicates the quality of the random data
8751 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
8752 error queue. New function RAND_pseudo_bytes() generates output that is
8753 guaranteed to be unique but not unpredictable. RAND_add is like
8754 RAND_seed, but takes an extra argument for an entropy estimate
8755 (RAND_seed always assumes full entropy).
8758 *) Do more iterations of Rabin-Miller probable prime test (specifically,
8759 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
8760 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
8761 in crypto/bn/bn_prime.c for the complete table). This guarantees a
8762 false-positive rate of at most 2^-80 for random input.
8765 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
8768 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
8769 in the 0.9.5 release), this returns the chain
8770 from an X509_CTX structure with a dup of the stack and all
8771 the X509 reference counts upped: so the stack will exist
8772 after X509_CTX_cleanup() has been called. Modify pkcs12.c
8775 Also make SSL_SESSION_print() print out the verify return
8779 *) Add manpage for the pkcs12 command. Also change the default
8780 behaviour so MAC iteration counts are used unless the new
8781 -nomaciter option is used. This improves file security and
8782 only older versions of MSIE (4.0 for example) need it.
8785 *) Honor the no-xxx Configure options when creating .DEF files.
8788 *) Add PKCS#10 attributes to field table: challengePassword,
8789 unstructuredName and unstructuredAddress. These are taken from
8790 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
8791 international characters are used.
8793 More changes to X509_ATTRIBUTE code: allow the setting of types
8794 based on strings. Remove the 'loc' parameter when adding
8795 attributes because these will be a SET OF encoding which is sorted
8799 *) Initial changes to the 'req' utility to allow request generation
8800 automation. This will allow an application to just generate a template
8801 file containing all the field values and have req construct the
8804 Initial support for X509_ATTRIBUTE handling. Stacks of these are
8805 used all over the place including certificate requests and PKCS#7
8806 structures. They are currently handled manually where necessary with
8807 some primitive wrappers for PKCS#7. The new functions behave in a
8808 manner analogous to the X509 extension functions: they allow
8809 attributes to be looked up by NID and added.
8811 Later something similar to the X509V3 code would be desirable to
8812 automatically handle the encoding, decoding and printing of the
8813 more complex types. The string types like challengePassword can
8814 be handled by the string table functions.
8816 Also modified the multi byte string table handling. Now there is
8817 a 'global mask' which masks out certain types. The table itself
8818 can use the flag STABLE_NO_MASK to ignore the mask setting: this
8819 is useful when for example there is only one permissible type
8820 (as in countryName) and using the mask might result in no valid
8824 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
8825 SSL_get_peer_finished to allow applications to obtain the latest
8826 Finished messages sent to the peer or expected from the peer,
8827 respectively. (SSL_get_peer_finished is usually the Finished message
8828 actually received from the peer, otherwise the protocol will be aborted.)
8830 As the Finished message are message digests of the complete handshake
8831 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
8832 be used for external authentication procedures when the authentication
8833 provided by SSL/TLS is not desired or is not enough.
8836 *) Enhanced support for Alpha Linux is added. Now ./config checks if
8837 the host supports BWX extension and if Compaq C is present on the
8838 $PATH. Just exploiting of the BWX extension results in 20-30%
8839 performance kick for some algorithms, e.g. DES and RC4 to mention
8840 a couple. Compaq C in turn generates ~20% faster code for MD5 and
8844 *) Add support for MS "fast SGC". This is arguably a violation of the
8845 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
8846 weak crypto and after checking the certificate is SGC a second one
8847 with strong crypto. MS SGC stops the first handshake after receiving
8848 the server certificate message and sends a second client hello. Since
8849 a server will typically do all the time consuming operations before
8850 expecting any further messages from the client (server key exchange
8851 is the most expensive) there is little difference between the two.
8853 To get OpenSSL to support MS SGC we have to permit a second client
8854 hello message after we have sent server done. In addition we have to
8855 reset the MAC if we do get this second client hello.
8858 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
8859 if a DER encoded private key is RSA or DSA traditional format. Changed
8860 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
8861 format DER encoded private key. Newer code should use PKCS#8 format which
8862 has the key type encoded in the ASN1 structure. Added DER private key
8863 support to pkcs8 application.
8866 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
8867 ciphersuites has been selected (as required by the SSL 3/TLS 1
8868 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
8869 is set, we interpret this as a request to violate the specification
8870 (the worst that can happen is a handshake failure, and 'correct'
8871 behaviour would result in a handshake failure anyway).
8874 *) In SSL_CTX_add_session, take into account that there might be multiple
8875 SSL_SESSION structures with the same session ID (e.g. when two threads
8876 concurrently obtain them from an external cache).
8877 The internal cache can handle only one SSL_SESSION with a given ID,
8878 so if there's a conflict, we now throw out the old one to achieve
8882 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
8883 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
8884 some routines that use cipher OIDs: some ciphers do not have OIDs
8885 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
8889 *) Simplify the trust setting structure and code. Now we just have
8890 two sequences of OIDs for trusted and rejected settings. These will
8891 typically have values the same as the extended key usage extension
8892 and any application specific purposes.
8894 The trust checking code now has a default behaviour: it will just
8895 check for an object with the same NID as the passed id. Functions can
8896 be provided to override either the default behaviour or the behaviour
8897 for a given id. SSL client, server and email already have functions
8898 in place for compatibility: they check the NID and also return "trusted"
8899 if the certificate is self signed.
8902 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
8903 traditional format into an EVP_PKEY structure.
8906 *) Add a password callback function PEM_cb() which either prompts for
8907 a password if usr_data is NULL or otherwise assumes it is a null
8908 terminated password. Allow passwords to be passed on command line
8909 environment or config files in a few more utilities.
8912 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
8913 keys. Add some short names for PKCS#8 PBE algorithms and allow them
8914 to be specified on the command line for the pkcs8 and pkcs12 utilities.
8915 Update documentation.
8918 *) Support for ASN1 "NULL" type. This could be handled before by using
8919 ASN1_TYPE but there wasn't any function that would try to read a NULL
8920 and produce an error if it couldn't. For compatibility we also have
8921 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
8922 don't allocate anything because they don't need to.
8925 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
8927 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
8929 *) Rebuild of the memory allocation routines used by OpenSSL code and
8930 possibly others as well. The purpose is to make an interface that
8931 provide hooks so anyone can build a separate set of allocation and
8932 deallocation routines to be used by OpenSSL, for example memory
8933 pool implementations, or something else, which was previously hard
8934 since Malloc(), Realloc() and Free() were defined as macros having
8935 the values malloc, realloc and free, respectively (except for Win32
8936 compilations). The same is provided for memory debugging code.
8937 OpenSSL already comes with functionality to find memory leaks, but
8938 this gives people a chance to debug other memory problems.
8940 With these changes, a new set of functions and macros have appeared:
8942 CRYPTO_set_mem_debug_functions() [F]
8943 CRYPTO_get_mem_debug_functions() [F]
8944 CRYPTO_dbg_set_options() [F]
8945 CRYPTO_dbg_get_options() [F]
8946 CRYPTO_malloc_debug_init() [M]
8948 The memory debug functions are NULL by default, unless the library
8949 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
8950 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
8951 gives the standard debugging functions that come with OpenSSL) or
8952 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
8953 provided by the library user) must be used. When the standard
8954 debugging functions are used, CRYPTO_dbg_set_options can be used to
8955 request additional information:
8956 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
8957 the CRYPTO_MDEBUG_xxx macro when compiling the library.
8959 Also, things like CRYPTO_set_mem_functions will always give the
8960 expected result (the new set of functions is used for allocation
8961 and deallocation) at all times, regardless of platform and compiler
8964 To finish it up, some functions that were never use in any other
8965 way than through macros have a new API and new semantic:
8968 CRYPTO_dbg_realloc()
8971 All macros of value have retained their old syntax.
8972 [Richard Levitte and Bodo Moeller]
8974 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
8975 ordering of SMIMECapabilities wasn't in "strength order" and there
8976 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
8980 *) Some ASN1 types with illegal zero length encoding (INTEGER,
8981 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
8982 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
8984 *) Merge in my S/MIME library for OpenSSL. This provides a simple
8985 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
8986 functionality to handle multipart/signed properly) and a utility
8987 called 'smime' to call all this stuff. This is based on code I
8988 originally wrote for Celo who have kindly allowed it to be
8989 included in OpenSSL.
8992 *) Add variants des_set_key_checked and des_set_key_unchecked of
8993 des_set_key (aka des_key_sched). Global variable des_check_key
8994 decides which of these is called by des_set_key; this way
8995 des_check_key behaves as it always did, but applications and
8996 the library itself, which was buggy for des_check_key == 1,
8997 have a cleaner way to pick the version they need.
9000 *) New function PKCS12_newpass() which changes the password of a
9004 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
9005 dynamic mix. In both cases the ids can be used as an index into the
9006 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
9007 functions so they accept a list of the field values and the
9008 application doesn't need to directly manipulate the X509_TRUST
9012 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
9016 *) Modify the way the V3 extension code looks up extensions. This now
9017 works in a similar way to the object code: we have some "standard"
9018 extensions in a static table which is searched with OBJ_bsearch()
9019 and the application can add dynamic ones if needed. The file
9020 crypto/x509v3/ext_dat.h now has the info: this file needs to be
9021 updated whenever a new extension is added to the core code and kept
9022 in ext_nid order. There is a simple program 'tabtest.c' which checks
9023 this. New extensions are not added too often so this file can readily
9024 be maintained manually.
9026 There are two big advantages in doing things this way. The extensions
9027 can be looked up immediately and no longer need to be "added" using
9028 X509V3_add_standard_extensions(): this function now does nothing.
9029 [Side note: I get *lots* of email saying the extension code doesn't
9030 work because people forget to call this function]
9031 Also no dynamic allocation is done unless new extensions are added:
9032 so if we don't add custom extensions there is no need to call
9033 X509V3_EXT_cleanup().
9036 *) Modify enc utility's salting as follows: make salting the default. Add a
9037 magic header, so unsalted files fail gracefully instead of just decrypting
9038 to garbage. This is because not salting is a big security hole, so people
9039 should be discouraged from doing it.
9042 *) Fixes and enhancements to the 'x509' utility. It allowed a message
9043 digest to be passed on the command line but it only used this
9044 parameter when signing a certificate. Modified so all relevant
9045 operations are affected by the digest parameter including the
9046 -fingerprint and -x509toreq options. Also -x509toreq choked if a
9047 DSA key was used because it didn't fix the digest.
9050 *) Initial certificate chain verify code. Currently tests the untrusted
9051 certificates for consistency with the verify purpose (which is set
9052 when the X509_STORE_CTX structure is set up) and checks the pathlength.
9054 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
9055 this is because it will reject chains with invalid extensions whereas
9056 every previous version of OpenSSL and SSLeay made no checks at all.
9058 Trust code: checks the root CA for the relevant trust settings. Trust
9059 settings have an initial value consistent with the verify purpose: e.g.
9060 if the verify purpose is for SSL client use it expects the CA to be
9061 trusted for SSL client use. However the default value can be changed to
9062 permit custom trust settings: one example of this would be to only trust
9063 certificates from a specific "secure" set of CAs.
9065 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
9066 which should be used for version portability: especially since the
9067 verify structure is likely to change more often now.
9069 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
9070 to set them. If not set then assume SSL clients will verify SSL servers
9073 Two new options to the verify program: -untrusted allows a set of
9074 untrusted certificates to be passed in and -purpose which sets the
9075 intended purpose of the certificate. If a purpose is set then the
9076 new chain verify code is used to check extension consistency.
9079 *) Support for the authority information access extension.
9082 *) Modify RSA and DSA PEM read routines to transparently handle
9083 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
9084 public keys in a format compatible with certificate
9085 SubjectPublicKeyInfo structures. Unfortunately there were already
9086 functions called *_PublicKey_* which used various odd formats so
9087 these are retained for compatibility: however the DSA variants were
9088 never in a public release so they have been deleted. Changed dsa/rsa
9089 utilities to handle the new format: note no releases ever handled public
9090 keys so we should be OK.
9092 The primary motivation for this change is to avoid the same fiasco
9093 that dogs private keys: there are several incompatible private key
9094 formats some of which are standard and some OpenSSL specific and
9095 require various evil hacks to allow partial transparent handling and
9096 even then it doesn't work with DER formats. Given the option anything
9097 other than PKCS#8 should be dumped: but the other formats have to
9098 stay in the name of compatibility.
9100 With public keys and the benefit of hindsight one standard format
9101 is used which works with EVP_PKEY, RSA or DSA structures: though
9102 it clearly returns an error if you try to read the wrong kind of key.
9104 Added a -pubkey option to the 'x509' utility to output the public key.
9105 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
9106 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
9107 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
9108 that do the same as the EVP_PKEY_assign_*() except they up the
9109 reference count of the added key (they don't "swallow" the
9113 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
9114 CRLs would fail if the file contained no certificates or no CRLs:
9115 added a new function to read in both types and return the number
9116 read: this means that if none are read it will be an error. The
9117 DER versions of the certificate and CRL reader would always fail
9118 because it isn't possible to mix certificates and CRLs in DER format
9119 without choking one or the other routine. Changed this to just read
9120 a certificate: this is the best we can do. Also modified the code
9121 in apps/verify.c to take notice of return codes: it was previously
9122 attempting to read in certificates from NULL pointers and ignoring
9123 any errors: this is one reason why the cert and CRL reader seemed
9124 to work. It doesn't check return codes from the default certificate
9125 routines: these may well fail if the certificates aren't installed.
9128 *) Code to support otherName option in GeneralName.
9131 *) First update to verify code. Change the verify utility
9132 so it warns if it is passed a self signed certificate:
9133 for consistency with the normal behaviour. X509_verify
9134 has been modified to it will now verify a self signed
9135 certificate if *exactly* the same certificate appears
9136 in the store: it was previously impossible to trust a
9137 single self signed certificate. This means that:
9138 openssl verify ss.pem
9139 now gives a warning about a self signed certificate but
9140 openssl verify -CAfile ss.pem ss.pem
9144 *) For servers, store verify_result in SSL_SESSION data structure
9145 (and add it to external session representation).
9146 This is needed when client certificate verifications fails,
9147 but an application-provided verification callback (set by
9148 SSL_CTX_set_cert_verify_callback) allows accepting the session
9149 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
9150 but returns 1): When the session is reused, we have to set
9151 ssl->verify_result to the appropriate error code to avoid
9153 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
9155 *) Fix a bug in the new PKCS#7 code: it didn't consider the
9156 case in PKCS7_dataInit() where the signed PKCS7 structure
9157 didn't contain any existing data because it was being created.
9158 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
9160 *) Add a salt to the key derivation routines in enc.c. This
9161 forms the first 8 bytes of the encrypted file. Also add a
9162 -S option to allow a salt to be input on the command line.
9165 *) New function X509_cmp(). Oddly enough there wasn't a function
9166 to compare two certificates. We do this by working out the SHA1
9167 hash and comparing that. X509_cmp() will be needed by the trust
9171 *) SSL_get1_session() is like SSL_get_session(), but increments
9172 the reference count in the SSL_SESSION returned.
9173 [Geoff Thorpe <geoff@eu.c2.net>]
9175 *) Fix for 'req': it was adding a null to request attributes.
9176 Also change the X509_LOOKUP and X509_INFO code to handle
9177 certificate auxiliary information.
9180 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
9184 *) Add the possibility to add extra information to the memory leak
9185 detecting output, to form tracebacks, showing from where each
9186 allocation was originated: CRYPTO_push_info("constant string") adds
9187 the string plus current file name and line number to a per-thread
9188 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
9189 is like calling CYRPTO_pop_info() until the stack is empty.
9190 Also updated memory leak detection code to be multi-thread-safe.
9193 *) Add options -text and -noout to pkcs7 utility and delete the
9194 encryption options which never did anything. Update docs.
9197 *) Add options to some of the utilities to allow the pass phrase
9198 to be included on either the command line (not recommended on
9199 OSes like Unix) or read from the environment. Update the
9200 manpages and fix a few bugs.
9203 *) Add a few manpages for some of the openssl commands.
9206 *) Fix the -revoke option in ca. It was freeing up memory twice,
9207 leaking and not finding already revoked certificates.
9210 *) Extensive changes to support certificate auxiliary information.
9211 This involves the use of X509_CERT_AUX structure and X509_AUX
9212 functions. An X509_AUX function such as PEM_read_X509_AUX()
9213 can still read in a certificate file in the usual way but it
9214 will also read in any additional "auxiliary information". By
9215 doing things this way a fair degree of compatibility can be
9216 retained: existing certificates can have this information added
9217 using the new 'x509' options.
9219 Current auxiliary information includes an "alias" and some trust
9220 settings. The trust settings will ultimately be used in enhanced
9221 certificate chain verification routines: currently a certificate
9222 can only be trusted if it is self signed and then it is trusted
9226 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
9227 The problem was that one of the replacement routines had not been working
9228 since SSLeay releases. For now the offending routine has been replaced
9229 with non-optimised assembler. Even so, this now gives around 95%
9230 performance improvement for 1024 bit RSA signs.
9233 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
9234 handling. Most clients have the effective key size in bits equal to
9235 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
9236 A few however don't do this and instead use the size of the decrypted key
9237 to determine the RC2 key length and the AlgorithmIdentifier to determine
9238 the effective key length. In this case the effective key length can still
9239 be 40 bits but the key length can be 168 bits for example. This is fixed
9240 by manually forcing an RC2 key into the EVP_PKEY structure because the
9241 EVP code can't currently handle unusual RC2 key sizes: it always assumes
9242 the key length and effective key length are equal.
9245 *) Add a bunch of functions that should simplify the creation of
9246 X509_NAME structures. Now you should be able to do:
9247 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
9248 and have it automatically work out the correct field type and fill in
9249 the structures. The more adventurous can try:
9250 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
9251 and it will (hopefully) work out the correct multibyte encoding.
9254 *) Change the 'req' utility to use the new field handling and multibyte
9255 copy routines. Before the DN field creation was handled in an ad hoc
9256 way in req, ca, and x509 which was rather broken and didn't support
9257 BMPStrings or UTF8Strings. Since some software doesn't implement
9258 BMPStrings or UTF8Strings yet, they can be enabled using the config file
9259 using the dirstring_type option. See the new comment in the default
9260 openssl.cnf for more info.
9263 *) Make crypto/rand/md_rand.c more robust:
9264 - Assure unique random numbers after fork().
9265 - Make sure that concurrent threads access the global counter and
9266 md serializably so that we never lose entropy in them
9267 or use exactly the same state in multiple threads.
9268 Access to the large state is not always serializable because
9269 the additional locking could be a performance killer, and
9270 md should be large enough anyway.
9273 *) New file apps/app_rand.c with commonly needed functionality
9274 for handling the random seed file.
9276 Use the random seed file in some applications that previously did not:
9278 dsaparam -genkey (which also ignored its '-rand' option),
9281 x509 (when signing).
9282 Except on systems with /dev/urandom, it is crucial to have a random
9283 seed file at least for key creation, DSA signing, and for DH exchanges;
9284 for RSA signatures we could do without one.
9286 gendh and gendsa (unlike genrsa) used to read only the first byte
9287 of each file listed in the '-rand' option. The function as previously
9288 found in genrsa is now in app_rand.c and is used by all programs
9289 that support '-rand'.
9292 *) In RAND_write_file, use mode 0600 for creating files;
9293 don't just chmod when it may be too late.
9296 *) Report an error from X509_STORE_load_locations
9297 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
9300 *) New function ASN1_mbstring_copy() this copies a string in either
9301 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
9302 into an ASN1_STRING type. A mask of permissible types is passed
9303 and it chooses the "minimal" type to use or an error if not type
9307 *) Add function equivalents to the various macros in asn1.h. The old
9308 macros are retained with an M_ prefix. Code inside the library can
9309 use the M_ macros. External code (including the openssl utility)
9310 should *NOT* in order to be "shared library friendly".
9313 *) Add various functions that can check a certificate's extensions
9314 to see if it usable for various purposes such as SSL client,
9315 server or S/MIME and CAs of these types. This is currently
9316 VERY EXPERIMENTAL but will ultimately be used for certificate chain
9317 verification. Also added a -purpose flag to x509 utility to
9318 print out all the purposes.
9321 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
9325 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
9326 for, obtain and decode and extension and obtain its critical flag.
9327 This allows all the necessary extension code to be handled in a
9328 single function call.
9331 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
9332 platforms. See crypto/rc4/rc4_enc.c for further details.
9335 *) New -noout option to asn1parse. This causes no output to be produced
9336 its main use is when combined with -strparse and -out to extract data
9337 from a file (which may not be in ASN.1 format).
9340 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
9341 when producing the local key id.
9342 [Richard Levitte <levitte@stacken.kth.se>]
9344 *) New option -dhparam in s_server. This allows a DH parameter file to be
9345 stated explicitly. If it is not stated then it tries the first server
9346 certificate file. The previous behaviour hard coded the filename
9350 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
9351 a public key to be input or output. For example:
9352 openssl rsa -in key.pem -pubout -out pubkey.pem
9353 Also added necessary DSA public key functions to handle this.
9356 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
9357 in the message. This was handled by allowing
9358 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
9359 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
9361 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
9362 to the end of the strings whereas this didn't. This would cause problems
9363 if strings read with d2i_ASN1_bytes() were later modified.
9364 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
9366 *) Fix for base64 decode bug. When a base64 bio reads only one line of
9367 data and it contains EOF it will end up returning an error. This is
9368 caused by input 46 bytes long. The cause is due to the way base64
9369 BIOs find the start of base64 encoded data. They do this by trying a
9370 trial decode on each line until they find one that works. When they
9371 do a flag is set and it starts again knowing it can pass all the
9372 data directly through the decoder. Unfortunately it doesn't reset
9373 the context it uses. This means that if EOF is reached an attempt
9374 is made to pass two EOFs through the context and this causes the
9375 resulting error. This can also cause other problems as well. As is
9376 usual with these problems it takes *ages* to find and the fix is
9377 trivial: move one line.
9378 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
9380 *) Ugly workaround to get s_client and s_server working under Windows. The
9381 old code wouldn't work because it needed to select() on sockets and the
9382 tty (for keypresses and to see if data could be written). Win32 only
9383 supports select() on sockets so we select() with a 1s timeout on the
9384 sockets and then see if any characters are waiting to be read, if none
9385 are present then we retry, we also assume we can always write data to
9386 the tty. This isn't nice because the code then blocks until we've
9387 received a complete line of data and it is effectively polling the
9388 keyboard at 1s intervals: however it's quite a bit better than not
9389 working at all :-) A dedicated Windows application might handle this
9390 with an event loop for example.
9393 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
9394 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
9395 will be called when RSA_sign() and RSA_verify() are used. This is useful
9396 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
9397 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
9398 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
9399 This necessitated the support of an extra signature type NID_md5_sha1
9400 for SSL signatures and modifications to the SSL library to use it instead
9401 of calling RSA_public_decrypt() and RSA_private_encrypt().
9404 *) Add new -verify -CAfile and -CApath options to the crl program, these
9405 will lookup a CRL issuers certificate and verify the signature in a
9406 similar way to the verify program. Tidy up the crl program so it
9407 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
9408 less strict. It will now permit CRL extensions even if it is not
9409 a V2 CRL: this will allow it to tolerate some broken CRLs.
9412 *) Initialize all non-automatic variables each time one of the openssl
9413 sub-programs is started (this is necessary as they may be started
9414 multiple times from the "OpenSSL>" prompt).
9415 [Lennart Bang, Bodo Moeller]
9417 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
9418 removing all other RSA functionality (this is what NO_RSA does). This
9419 is so (for example) those in the US can disable those operations covered
9420 by the RSA patent while allowing storage and parsing of RSA keys and RSA
9424 *) Non-copying interface to BIO pairs.
9425 (still largely untested)
9428 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
9429 ASCII string. This was handled independently in various places before.
9432 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
9433 UTF8 strings a character at a time.
9436 *) Use client_version from client hello to select the protocol
9437 (s23_srvr.c) and for RSA client key exchange verification
9438 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
9441 *) Add various utility functions to handle SPKACs, these were previously
9442 handled by poking round in the structure internals. Added new function
9443 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
9444 print, verify and generate SPKACs. Based on an original idea from
9445 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
9448 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
9451 *) Allow the config file extension section to be overwritten on the
9452 command line. Based on an original idea from Massimiliano Pala
9453 <madwolf@comune.modena.it>. The new option is called -extensions
9454 and can be applied to ca, req and x509. Also -reqexts to override
9455 the request extensions in req and -crlexts to override the crl extensions
9459 *) Add new feature to the SPKAC handling in ca. Now you can include
9460 the same field multiple times by preceding it by "XXXX." for example:
9463 this is the same syntax as used in the req config file.
9466 *) Allow certificate extensions to be added to certificate requests. These
9467 are specified in a 'req_extensions' option of the req section of the
9468 config file. They can be printed out with the -text option to req but
9469 are otherwise ignored at present.
9472 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
9473 data read consists of only the final block it would not decrypted because
9474 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
9475 A misplaced 'break' also meant the decrypted final block might not be
9476 copied until the next read.
9479 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
9480 a few extra parameters to the DH structure: these will be useful if
9481 for example we want the value of 'q' or implement X9.42 DH.
9484 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
9485 provides hooks that allow the default DSA functions or functions on a
9486 "per key" basis to be replaced. This allows hardware acceleration and
9487 hardware key storage to be handled without major modification to the
9488 library. Also added low level modexp hooks and CRYPTO_EX structure and
9489 associated functions.
9492 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
9493 as "read only": it can't be written to and the buffer it points to will
9494 not be freed. Reading from a read only BIO is much more efficient than
9495 a normal memory BIO. This was added because there are several times when
9496 an area of memory needs to be read from a BIO. The previous method was
9497 to create a memory BIO and write the data to it, this results in two
9498 copies of the data and an O(n^2) reading algorithm. There is a new
9499 function BIO_new_mem_buf() which creates a read only memory BIO from
9500 an area of memory. Also modified the PKCS#7 routines to use read only
9504 *) Bugfix: ssl23_get_client_hello did not work properly when called in
9505 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
9506 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
9507 but a retry condition occured while trying to read the rest.
9510 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
9511 NID_pkcs7_encrypted by default: this was wrong since this should almost
9512 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
9513 the encrypted data type: this is a more sensible place to put it and it
9514 allows the PKCS#12 code to be tidied up that duplicated this
9518 *) Changed obj_dat.pl script so it takes its input and output files on
9519 the command line. This should avoid shell escape redirection problems
9523 *) Initial support for certificate extension requests, these are included
9524 in things like Xenroll certificate requests. Included functions to allow
9525 extensions to be obtained and added.
9528 *) -crlf option to s_client and s_server for sending newlines as
9529 CRLF (as required by many protocols).
9532 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
9534 *) Install libRSAglue.a when OpenSSL is built with RSAref.
9535 [Ralf S. Engelschall]
9537 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
9538 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
9540 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
9544 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
9545 DH parameters/keys (q is lost during that conversion, but the resulting
9546 DH parameters contain its length).
9548 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
9549 much faster than DH_generate_parameters (which creates parameters
9550 where p = 2*q + 1), and also the smaller q makes DH computations
9551 much more efficient (160-bit exponentiation instead of 1024-bit
9552 exponentiation); so this provides a convenient way to support DHE
9553 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
9554 utter importance to use
9555 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9557 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
9558 when such DH parameters are used, because otherwise small subgroup
9559 attacks may become possible!
9562 *) Avoid memory leak in i2d_DHparams.
9565 *) Allow the -k option to be used more than once in the enc program:
9566 this allows the same encrypted message to be read by multiple recipients.
9569 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
9570 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
9571 it will always use the numerical form of the OID, even if it has a short
9575 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
9576 method only got called if p,q,dmp1,dmq1,iqmp components were present,
9577 otherwise bn_mod_exp was called. In the case of hardware keys for example
9578 no private key components need be present and it might store extra data
9579 in the RSA structure, which cannot be accessed from bn_mod_exp.
9580 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
9581 private key operations.
9584 *) Added support for SPARC Linux.
9587 *) pem_password_cb function type incompatibly changed from
9588 typedef int pem_password_cb(char *buf, int size, int rwflag);
9590 ....(char *buf, int size, int rwflag, void *userdata);
9591 so that applications can pass data to their callbacks:
9592 The PEM[_ASN1]_{read,write}... functions and macros now take an
9593 additional void * argument, which is just handed through whenever
9594 the password callback is called.
9595 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
9597 New function SSL_CTX_set_default_passwd_cb_userdata.
9599 Compatibility note: As many C implementations push function arguments
9600 onto the stack in reverse order, the new library version is likely to
9601 interoperate with programs that have been compiled with the old
9602 pem_password_cb definition (PEM_whatever takes some data that
9603 happens to be on the stack as its last argument, and the callback
9604 just ignores this garbage); but there is no guarantee whatsoever that
9607 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
9608 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
9609 problems not only on Windows, but also on some Unix platforms.
9610 To avoid problematic command lines, these definitions are now in an
9611 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
9612 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
9615 *) MIPS III/IV assembler module is reimplemented.
9618 *) More DES library cleanups: remove references to srand/rand and
9619 delete an unused file.
9622 *) Add support for the the free Netwide assembler (NASM) under Win32,
9623 since not many people have MASM (ml) and it can be hard to obtain.
9624 This is currently experimental but it seems to work OK and pass all
9625 the tests. Check out INSTALL.W32 for info.
9628 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
9629 without temporary keys kept an extra copy of the server key,
9630 and connections with temporary keys did not free everything in case
9634 *) New function RSA_check_key and new openssl rsa option -check
9635 for verifying the consistency of RSA keys.
9636 [Ulf Moeller, Bodo Moeller]
9638 *) Various changes to make Win32 compile work:
9639 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
9640 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
9641 comparison" warnings.
9642 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
9645 *) Add a debugging option to PKCS#5 v2 key generation function: when
9646 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
9647 derived keys are printed to stderr.
9650 *) Copy the flags in ASN1_STRING_dup().
9651 [Roman E. Pavlov <pre@mo.msk.ru>]
9653 *) The x509 application mishandled signing requests containing DSA
9654 keys when the signing key was also DSA and the parameters didn't match.
9656 It was supposed to omit the parameters when they matched the signing key:
9657 the verifying software was then supposed to automatically use the CA's
9658 parameters if they were absent from the end user certificate.
9660 Omitting parameters is no longer recommended. The test was also
9661 the wrong way round! This was probably due to unusual behaviour in
9662 EVP_cmp_parameters() which returns 1 if the parameters match.
9663 This meant that parameters were omitted when they *didn't* match and
9664 the certificate was useless. Certificates signed with 'ca' didn't have
9666 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
9668 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
9669 The interface is as follows:
9670 Applications can use
9671 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
9672 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
9673 "off" is now the default.
9674 The library internally uses
9675 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
9676 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
9677 to disable memory-checking temporarily.
9679 Some inconsistent states that previously were possible (and were
9680 even the default) are now avoided.
9682 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
9683 with each memory chunk allocated; this is occasionally more helpful
9684 than just having a counter.
9686 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
9688 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
9692 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
9693 which largely parallels "options", but is for changing API behaviour,
9694 whereas "options" are about protocol behaviour.
9695 Initial "mode" flags are:
9697 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
9698 a single record has been written.
9699 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
9700 retries use the same buffer location.
9701 (But all of the contents must be
9705 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
9708 *) Fix problems with no-hmac etc.
9709 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
9711 *) New functions RSA_get_default_method(), RSA_set_method() and
9712 RSA_get_method(). These allows replacement of RSA_METHODs without having
9713 to mess around with the internals of an RSA structure.
9716 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
9717 Also really enable memory leak checks in openssl.c and in some
9719 [Chad C. Mulligan, Bodo Moeller]
9721 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
9722 up the length of negative integers. This has now been simplified to just
9723 store the length when it is first determined and use it later, rather
9724 than trying to keep track of where data is copied and updating it to
9726 [Steve Henson, reported by Brien Wheeler
9727 <bwheeler@authentica-security.com>]
9729 *) Add a new function PKCS7_signatureVerify. This allows the verification
9730 of a PKCS#7 signature but with the signing certificate passed to the
9731 function itself. This contrasts with PKCS7_dataVerify which assumes the
9732 certificate is present in the PKCS#7 structure. This isn't always the
9733 case: certificates can be omitted from a PKCS#7 structure and be
9734 distributed by "out of band" means (such as a certificate database).
9737 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
9738 function prototypes in pem.h, also change util/mkdef.pl to add the
9739 necessary function names.
9742 *) mk1mf.pl (used by Windows builds) did not properly read the
9743 options set by Configure in the top level Makefile, and Configure
9744 was not even able to write more than one option correctly.
9745 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
9748 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
9749 file to be loaded from a BIO or FILE pointer. The BIO version will
9750 for example allow memory BIOs to contain config info.
9753 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
9754 Whoever hopes to achieve shared-library compatibility across versions
9755 must use this, not the compile-time macro.
9756 (Exercise 0.9.4: Which is the minimum library version required by
9758 Note: All this applies only to multi-threaded programs, others don't
9762 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
9763 through a BIO pair triggered the default case, i.e.
9764 SSLerr(...,SSL_R_UNKNOWN_STATE).
9767 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
9768 can use the SSL library even if none of the specific BIOs is
9772 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
9773 for the encoded length.
9774 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
9776 *) Add initial documentation of the X509V3 functions.
9779 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
9780 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
9781 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
9782 secure PKCS#8 private key format with a high iteration count.
9785 *) Fix determination of Perl interpreter: A perl or perl5
9786 _directory_ in $PATH was also accepted as the interpreter.
9787 [Ralf S. Engelschall]
9789 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
9790 wrong with it but it was very old and did things like calling
9791 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
9795 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
9796 to use the new extension code.
9799 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
9800 with macros. This should make it easier to change their form, add extra
9801 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
9805 *) Add to configuration table a new entry that can specify an alternative
9806 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
9807 according to Mark Crispin <MRC@Panda.COM>.
9811 *) DES CBC did not update the IV. Weird.
9814 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
9815 Changing the behaviour of the former might break existing programs --
9816 where IV updating is needed, des_ncbc_encrypt can be used.
9819 *) When bntest is run from "make test" it drives bc to check its
9820 calculations, as well as internally checking them. If an internal check
9821 fails, it needs to cause bc to give a non-zero result or make test carries
9822 on without noticing the failure. Fixed.
9825 *) DES library cleanups.
9828 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
9829 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
9830 ciphers. NOTE: although the key derivation function has been verified
9831 against some published test vectors it has not been extensively tested
9832 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
9836 *) Instead of "mkdir -p", which is not fully portable, use new
9837 Perl script "util/mkdir-p.pl".
9840 *) Rewrite the way password based encryption (PBE) is handled. It used to
9841 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
9842 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
9843 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
9844 the 'parameter' field of the AlgorithmIdentifier is passed to the
9845 underlying key generation function so it must do its own ASN1 parsing.
9846 This has also changed the EVP_PBE_CipherInit() function which now has a
9847 'parameter' argument instead of literal salt and iteration count values
9848 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
9851 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
9852 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
9853 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
9854 KEY" because this clashed with PKCS#8 unencrypted string. Since this
9855 value was just used as a "magic string" and not used directly its
9856 value doesn't matter.
9859 *) Introduce some semblance of const correctness to BN. Shame C doesn't
9863 *) "linux-sparc64" configuration (ultrapenguin).
9864 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
9865 "linux-sparc" configuration.
9866 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
9868 *) config now generates no-xxx options for missing ciphers.
9871 *) Support the EBCDIC character set (work in progress).
9872 File ebcdic.c not yet included because it has a different license.
9873 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9875 *) Support BS2000/OSD-POSIX.
9876 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9878 *) Make callbacks for key generation use void * instead of char *.
9881 *) Make S/MIME samples compile (not yet tested).
9884 *) Additional typesafe stacks.
9887 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
9891 Changes between 0.9.3 and 0.9.3a [29 May 1999]
9893 *) New configuration variant "sco5-gcc".
9895 *) Updated some demos.
9896 [Sean O Riordain, Wade Scholine]
9898 *) Add missing BIO_free at exit of pkcs12 application.
9901 *) Fix memory leak in conf.c.
9904 *) Updates for Win32 to assembler version of MD5.
9907 *) Set #! path to perl in apps/der_chop to where we found it
9908 instead of using a fixed path.
9911 *) SHA library changes for irix64-mips4-cc.
9914 *) Improvements for VMS support.
9918 Changes between 0.9.2b and 0.9.3 [24 May 1999]
9920 *) Bignum library bug fix. IRIX 6 passes "make test" now!
9921 This also avoids the problems with SC4.2 and unpatched SC5.
9922 [Andy Polyakov <appro@fy.chalmers.se>]
9924 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
9925 These are required because of the typesafe stack would otherwise break
9926 existing code. If old code used a structure member which used to be STACK
9927 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
9928 sk_num or sk_value it would produce an error because the num, data members
9929 are not present in STACK_OF. Now it just produces a warning. sk_set
9930 replaces the old method of assigning a value to sk_value
9931 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
9932 that does this will no longer work (and should use sk_set instead) but
9933 this could be regarded as a "questionable" behaviour anyway.
9936 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
9937 correctly handle encrypted S/MIME data.
9940 *) Change type of various DES function arguments from des_cblock
9941 (which means, in function argument declarations, pointer to char)
9942 to des_cblock * (meaning pointer to array with 8 char elements),
9943 which allows the compiler to do more typechecking; it was like
9944 that back in SSLeay, but with lots of ugly casts.
9946 Introduce new type const_des_cblock.
9949 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
9950 problems: find RecipientInfo structure that matches recipient certificate
9951 and initialise the ASN1 structures properly based on passed cipher.
9954 *) Belatedly make the BN tests actually check the results.
9957 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
9958 to and from BNs: it was completely broken. New compilation option
9959 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
9960 key elements as negative integers.
9963 *) Reorganize and speed up MD5.
9964 [Andy Polyakov <appro@fy.chalmers.se>]
9967 [Richard Levitte <richard@levitte.org>]
9969 *) New option -out to asn1parse to allow the parsed structure to be
9970 output to a file. This is most useful when combined with the -strparse
9971 option to examine the output of things like OCTET STRINGS.
9974 *) Make SSL library a little more fool-proof by not requiring any longer
9975 that SSL_set_{accept,connect}_state be called before
9976 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
9977 in many applications because usually everything *appeared* to work as
9978 intended anyway -- now it really works as intended).
9981 *) Move openssl.cnf out of lib/.
9984 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
9985 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
9986 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
9987 [Ralf S. Engelschall]
9989 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
9990 handle PKCS#7 enveloped data properly.
9991 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
9993 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
9994 copying pointers. The cert_st handling is changed by this in
9995 various ways (and thus what used to be known as ctx->default_cert
9996 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
9997 any longer when s->cert does not give us what we need).
9998 ssl_cert_instantiate becomes obsolete by this change.
9999 As soon as we've got the new code right (possibly it already is?),
10000 we have solved a couple of bugs of the earlier code where s->cert
10001 was used as if it could not have been shared with other SSL structures.
10003 Note that using the SSL API in certain dirty ways now will result
10004 in different behaviour than observed with earlier library versions:
10005 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
10006 does not influence s as it used to.
10008 In order to clean up things more thoroughly, inside SSL_SESSION
10009 we don't use CERT any longer, but a new structure SESS_CERT
10010 that holds per-session data (if available); currently, this is
10011 the peer's certificate chain and, for clients, the server's certificate
10012 and temporary key. CERT holds only those values that can have
10013 meaningful defaults in an SSL_CTX.
10016 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
10017 from the internal representation. Various PKCS#7 fixes: remove some
10018 evil casts and set the enc_dig_alg field properly based on the signing
10022 *) Allow PKCS#12 password to be set from the command line or the
10023 environment. Let 'ca' get its config file name from the environment
10024 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
10028 *) Allow certificate policies extension to use an IA5STRING for the
10029 organization field. This is contrary to the PKIX definition but
10030 VeriSign uses it and IE5 only recognises this form. Document 'x509'
10034 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
10035 without disallowing inline assembler and the like for non-pedantic builds.
10038 *) Support Borland C++ builder.
10039 [Janez Jere <jj@void.si>, modified by Ulf Möller]
10041 *) Support Mingw32.
10044 *) SHA-1 cleanups and performance enhancements.
10045 [Andy Polyakov <appro@fy.chalmers.se>]
10047 *) Sparc v8plus assembler for the bignum library.
10048 [Andy Polyakov <appro@fy.chalmers.se>]
10050 *) Accept any -xxx and +xxx compiler options in Configure.
10053 *) Update HPUX configuration.
10056 *) Add missing sk_<type>_unshift() function to safestack.h
10057 [Ralf S. Engelschall]
10059 *) New function SSL_CTX_use_certificate_chain_file that sets the
10060 "extra_cert"s in addition to the certificate. (This makes sense
10061 only for "PEM" format files, as chains as a whole are not
10065 *) Support verify_depth from the SSL API.
10066 x509_vfy.c had what can be considered an off-by-one-error:
10067 Its depth (which was not part of the external interface)
10068 was actually counting the number of certificates in a chain;
10069 now it really counts the depth.
10072 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
10073 instead of X509err, which often resulted in confusing error
10074 messages since the error codes are not globally unique
10075 (e.g. an alleged error in ssl3_accept when a certificate
10076 didn't match the private key).
10078 *) New function SSL_CTX_set_session_id_context that allows to set a default
10079 value (so that you don't need SSL_set_session_id_context for each
10080 connection using the SSL_CTX).
10083 *) OAEP decoding bug fix.
10086 *) Support INSTALL_PREFIX for package builders, as proposed by
10090 *) New Configure options "threads" and "no-threads". For systems
10091 where the proper compiler options are known (currently Solaris
10092 and Linux), "threads" is the default.
10095 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
10098 *) Install various scripts to $(OPENSSLDIR)/misc, not to
10099 $(INSTALLTOP)/bin -- they shouldn't clutter directories
10100 such as /usr/local/bin.
10103 *) "make linux-shared" to build shared libraries.
10104 [Niels Poppe <niels@netbox.org>]
10106 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
10109 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
10110 extension adding in x509 utility.
10113 *) Remove NOPROTO sections and error code comments.
10116 *) Partial rewrite of the DEF file generator to now parse the ANSI
10120 *) New Configure options --prefix=DIR and --openssldir=DIR.
10123 *) Complete rewrite of the error code script(s). It is all now handled
10124 by one script at the top level which handles error code gathering,
10125 header rewriting and C source file generation. It should be much better
10126 than the old method: it now uses a modified version of Ulf's parser to
10127 read the ANSI prototypes in all header files (thus the old K&R definitions
10128 aren't needed for error creation any more) and do a better job of
10129 translating function codes into names. The old 'ASN1 error code imbedded
10130 in a comment' is no longer necessary and it doesn't use .err files which
10131 have now been deleted. Also the error code call doesn't have to appear all
10132 on one line (which resulted in some large lines...).
10135 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
10138 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
10139 0 (which usually indicates a closed connection), but continue reading.
10142 *) Fix some race conditions.
10145 *) Add support for CRL distribution points extension. Add Certificate
10146 Policies and CRL distribution points documentation.
10149 *) Move the autogenerated header file parts to crypto/opensslconf.h.
10152 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
10153 8 of keying material. Merlin has also confirmed interop with this fix
10154 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
10155 [Merlin Hughes <merlin@baltimore.ie>]
10157 *) Fix lots of warnings.
10158 [Richard Levitte <levitte@stacken.kth.se>]
10160 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
10161 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
10162 [Richard Levitte <levitte@stacken.kth.se>]
10164 *) Fix problems with sizeof(long) == 8.
10165 [Andy Polyakov <appro@fy.chalmers.se>]
10167 *) Change functions to ANSI C.
10170 *) Fix typos in error codes.
10171 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
10173 *) Remove defunct assembler files from Configure.
10176 *) SPARC v8 assembler BIGNUM implementation.
10177 [Andy Polyakov <appro@fy.chalmers.se>]
10179 *) Support for Certificate Policies extension: both print and set.
10180 Various additions to support the r2i method this uses.
10183 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
10184 return a const string when you are expecting an allocated buffer.
10187 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
10188 types DirectoryString and DisplayText.
10191 *) Add code to allow r2i extensions to access the configuration database,
10192 add an LHASH database driver and add several ctx helper functions.
10195 *) Fix an evil bug in bn_expand2() which caused various BN functions to
10196 fail when they extended the size of a BIGNUM.
10199 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
10200 support typesafe stack.
10203 *) Fix typo in SSL_[gs]et_options().
10204 [Nils Frostberg <nils@medcom.se>]
10206 *) Delete various functions and files that belonged to the (now obsolete)
10207 old X509V3 handling code.
10210 *) New Configure option "rsaref".
10213 *) Don't auto-generate pem.h.
10216 *) Introduce type-safe ASN.1 SETs.
10219 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
10220 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
10222 *) Introduce type-safe STACKs. This will almost certainly break lots of code
10223 that links with OpenSSL (well at least cause lots of warnings), but fear
10224 not: the conversion is trivial, and it eliminates loads of evil casts. A
10225 few STACKed things have been converted already. Feel free to convert more.
10226 In the fullness of time, I'll do away with the STACK type altogether.
10229 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
10230 specified in <certfile> by updating the entry in the index.txt file.
10231 This way one no longer has to edit the index.txt file manually for
10232 revoking a certificate. The -revoke option does the gory details now.
10233 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
10235 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
10236 `-text' option at all and this way the `-noout -text' combination was
10237 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
10238 [Ralf S. Engelschall]
10240 *) Make sure a corresponding plain text error message exists for the
10241 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
10242 verify callback function determined that a certificate was revoked.
10243 [Ralf S. Engelschall]
10245 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
10246 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
10247 all available cipers including rc5, which was forgotten until now.
10248 In order to let the testing shell script know which algorithms
10249 are available, a new (up to now undocumented) command
10250 "openssl list-cipher-commands" is used.
10253 *) Bugfix: s_client occasionally would sleep in select() when
10254 it should have checked SSL_pending() first.
10257 *) New functions DSA_do_sign and DSA_do_verify to provide access to
10258 the raw DSA values prior to ASN.1 encoding.
10261 *) Tweaks to Configure
10262 [Niels Poppe <niels@netbox.org>]
10264 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
10268 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
10271 *) New config option to avoid instructions that are illegal on the 80386.
10272 The default code is faster, but requires at least a 486.
10275 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
10276 SSL2_SERVER_VERSION (not used at all) macros, which are now the
10277 same as SSL2_VERSION anyway.
10280 *) New "-showcerts" option for s_client.
10283 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
10284 application. Various cleanups and fixes.
10287 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
10288 modify error routines to work internally. Add error codes and PBE init
10289 to library startup routines.
10292 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
10293 packing functions to asn1 and evp. Changed function names and error
10294 codes along the way.
10297 *) PKCS12 integration: and so it begins... First of several patches to
10298 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
10299 objects to objects.h
10302 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
10303 and display support for Thawte strong extranet extension.
10306 *) Add LinuxPPC support.
10307 [Jeff Dubrule <igor@pobox.org>]
10309 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
10310 bn_div_words in alpha.s.
10311 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
10313 *) Make sure the RSA OAEP test is skipped under -DRSAref because
10314 OAEP isn't supported when OpenSSL is built with RSAref.
10315 [Ulf Moeller <ulf@fitug.de>]
10317 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
10318 so they no longer are missing under -DNOPROTO.
10319 [Soren S. Jorvang <soren@t.dk>]
10322 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
10324 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
10325 doesn't work when the session is reused. Coming soon!
10328 *) Fix a security hole, that allows sessions to be reused in the wrong
10329 context thus bypassing client cert protection! All software that uses
10330 client certs and session caches in multiple contexts NEEDS PATCHING to
10331 allow session reuse! A fuller solution is in the works.
10332 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
10334 *) Some more source tree cleanups (removed obsolete files
10335 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
10336 permission on "config" script to be executable) and a fix for the INSTALL
10338 [Ulf Moeller <ulf@fitug.de>]
10340 *) Remove some legacy and erroneous uses of malloc, free instead of
10342 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
10344 *) Make rsa_oaep_test return non-zero on error.
10345 [Ulf Moeller <ulf@fitug.de>]
10347 *) Add support for native Solaris shared libraries. Configure
10348 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
10349 if someone would make that last step automatic.
10350 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
10352 *) ctx_size was not built with the right compiler during "make links". Fixed.
10355 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
10356 except NULL ciphers". This means the default cipher list will no longer
10357 enable NULL ciphers. They need to be specifically enabled e.g. with
10358 the string "DEFAULT:eNULL".
10361 *) Fix to RSA private encryption routines: if p < q then it would
10362 occasionally produce an invalid result. This will only happen with
10363 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
10366 *) Be less restrictive and allow also `perl util/perlpath.pl
10367 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
10368 because this way one can also use an interpreter named `perl5' (which is
10369 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
10370 installed as `perl').
10371 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10373 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
10374 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10376 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
10377 advapi32.lib to Win32 build and change the pem test comparison
10378 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
10379 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
10380 and crypto/des/ede_cbcm_enc.c.
10383 *) DES quad checksum was broken on big-endian architectures. Fixed.
10386 *) Comment out two functions in bio.h that aren't implemented. Fix up the
10387 Win32 test batch file so it (might) work again. The Win32 test batch file
10388 is horrible: I feel ill....
10391 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
10392 in e_os.h. Audit of header files to check ANSI and non ANSI
10393 sections: 10 functions were absent from non ANSI section and not exported
10394 from Windows DLLs. Fixed up libeay.num for new functions.
10397 *) Make `openssl version' output lines consistent.
10398 [Ralf S. Engelschall]
10400 *) Fix Win32 symbol export lists for BIO functions: Added
10401 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
10402 to ms/libeay{16,32}.def.
10403 [Ralf S. Engelschall]
10405 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
10406 fine under Unix and passes some trivial tests I've now added. But the
10407 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
10408 added to make sure no one expects that this stuff really works in the
10409 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
10410 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
10412 [Ralf S. Engelschall]
10414 *) Fix the generation of two part addresses in perl.
10415 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
10417 *) Add config entry for Linux on MIPS.
10418 [John Tobey <jtobey@channel1.com>]
10420 *) Make links whenever Configure is run, unless we are on Windoze.
10423 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
10424 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
10428 *) Add a useful kludge to allow package maintainers to specify compiler and
10429 other platforms details on the command line without having to patch the
10430 Configure script everytime: One now can use ``perl Configure
10431 <id>:<details>'', i.e. platform ids are allowed to have details appended
10432 to them (separated by colons). This is treated as there would be a static
10433 pre-configured entry in Configure's %table under key <id> with value
10434 <details> and ``perl Configure <id>'' is called. So, when you want to
10435 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
10436 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
10437 now, which overrides the FreeBSD-elf entry on-the-fly.
10438 [Ralf S. Engelschall]
10440 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
10443 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
10444 on the `perl Configure ...' command line. This way one can compile
10445 OpenSSL libraries with Position Independent Code (PIC) which is needed
10446 for linking it into DSOs.
10447 [Ralf S. Engelschall]
10449 *) Remarkably, export ciphers were totally broken and no-one had noticed!
10453 *) Cleaned up the LICENSE document: The official contact for any license
10454 questions now is the OpenSSL core team under openssl-core@openssl.org.
10455 And add a paragraph about the dual-license situation to make sure people
10456 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
10457 to the OpenSSL toolkit.
10458 [Ralf S. Engelschall]
10460 *) General source tree makefile cleanups: Made `making xxx in yyy...'
10461 display consistent in the source tree and replaced `/bin/rm' by `rm'.
10462 Additionally cleaned up the `make links' target: Remove unnecessary
10463 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
10464 to speed processing and no longer clutter the display with confusing
10465 stuff. Instead only the actually done links are displayed.
10466 [Ralf S. Engelschall]
10468 *) Permit null encryption ciphersuites, used for authentication only. It used
10469 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
10470 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
10474 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
10475 signed attributes when verifying signatures (this would break them),
10476 the detached data encoding was wrong and public keys obtained using
10477 X509_get_pubkey() weren't freed.
10480 *) Add text documentation for the BUFFER functions. Also added a work around
10481 to a Win95 console bug. This was triggered by the password read stuff: the
10482 last character typed gets carried over to the next fread(). If you were
10483 generating a new cert request using 'req' for example then the last
10484 character of the passphrase would be CR which would then enter the first
10488 *) Added the new `Includes OpenSSL Cryptography Software' button as
10489 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
10490 button and can be used by applications based on OpenSSL to show the
10491 relationship to the OpenSSL project.
10492 [Ralf S. Engelschall]
10494 *) Remove confusing variables in function signatures in files
10495 ssl/ssl_lib.c and ssl/ssl.h.
10496 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10498 *) Don't install bss_file.c under PREFIX/include/
10499 [Lennart Bong <lob@kulthea.stacken.kth.se>]
10501 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
10502 functions that return function pointers and has support for NT specific
10503 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
10504 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
10505 unsigned to signed types: this was killing the Win32 compile.
10508 *) Add new certificate file to stack functions,
10509 SSL_add_dir_cert_subjects_to_stack() and
10510 SSL_add_file_cert_subjects_to_stack(). These largely supplant
10511 SSL_load_client_CA_file(), and can be used to add multiple certs easily
10512 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
10513 This means that Apache-SSL and similar packages don't have to mess around
10514 to add as many CAs as they want to the preferred list.
10517 *) Experiment with doxygen documentation. Currently only partially applied to
10519 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
10520 openssl.doxy as the configuration file.
10523 *) Get rid of remaining C++-style comments which strict C compilers hate.
10524 [Ralf S. Engelschall, pointed out by Carlos Amengual]
10526 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
10527 compiled in by default: it has problems with large keys.
10530 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
10531 DH private keys and/or callback functions which directly correspond to
10532 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
10533 is needed for applications which have to configure certificates on a
10534 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
10536 For the RSA certificate situation is makes no difference, but
10537 for the DSA certificate situation this fixes the "no shared cipher"
10538 problem where the OpenSSL cipher selection procedure failed because the
10539 temporary keys were not overtaken from the context and the API provided
10540 no way to reconfigure them.
10541 The new functions now let applications reconfigure the stuff and they
10542 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
10543 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
10544 non-public-API function ssl_cert_instantiate() is used as a helper
10545 function and also to reduce code redundancy inside ssl_rsa.c.
10546 [Ralf S. Engelschall]
10548 *) Move s_server -dcert and -dkey options out of the undocumented feature
10549 area because they are useful for the DSA situation and should be
10550 recognized by the users.
10551 [Ralf S. Engelschall]
10553 *) Fix the cipher decision scheme for export ciphers: the export bits are
10554 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
10555 SSL_EXP_MASK. So, the original variable has to be used instead of the
10556 already masked variable.
10557 [Richard Levitte <levitte@stacken.kth.se>]
10559 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
10560 [Richard Levitte <levitte@stacken.kth.se>]
10562 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
10563 from `int' to `unsigned int' because it's a length and initialized by
10564 EVP_DigestFinal() which expects an `unsigned int *'.
10565 [Richard Levitte <levitte@stacken.kth.se>]
10567 *) Don't hard-code path to Perl interpreter on shebang line of Configure
10568 script. Instead use the usual Shell->Perl transition trick.
10569 [Ralf S. Engelschall]
10571 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
10572 (in addition to RSA certificates) to match the behaviour of `openssl dsa
10573 -noout -modulus' as it's already the case for `openssl rsa -noout
10574 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
10575 currently the public key is printed (a decision which was already done by
10576 `openssl dsa -modulus' in the past) which serves a similar purpose.
10577 Additionally the NO_RSA no longer completely removes the whole -modulus
10578 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
10580 [Ralf S. Engelschall]
10582 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
10583 BIO. See the source (crypto/evp/bio_ok.c) for more info.
10584 [Arne Ansper <arne@ats.cyber.ee>]
10586 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
10587 to be added. Now both 'req' and 'ca' can use new objects defined in the
10591 *) Add cool BIO that does syslog (or event log on NT).
10592 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
10594 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
10595 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
10596 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
10597 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
10600 *) Add preliminary config info for new extension code.
10603 *) Make RSA_NO_PADDING really use no padding.
10604 [Ulf Moeller <ulf@fitug.de>]
10606 *) Generate errors when private/public key check is done.
10609 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
10610 for some CRL extensions and new objects added.
10613 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
10614 key usage extension and fuller support for authority key id.
10617 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
10618 padding method for RSA, which is recommended for new applications in PKCS
10619 #1 v2.0 (RFC 2437, October 1998).
10620 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
10621 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
10622 against Bleichbacher's attack on RSA.
10623 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
10626 *) Updates to the new SSL compression code
10627 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10629 *) Fix so that the version number in the master secret, when passed
10630 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
10631 (because the server will not accept higher), that the version number
10632 is 0x03,0x01, not 0x03,0x00
10633 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10635 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
10636 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
10637 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
10640 *) Support for RAW extensions where an arbitrary extension can be
10641 created by including its DER encoding. See apps/openssl.cnf for
10645 *) Make sure latest Perl versions don't interpret some generated C array
10646 code as Perl array code in the crypto/err/err_genc.pl script.
10647 [Lars Weber <3weber@informatik.uni-hamburg.de>]
10649 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
10650 not many people have the assembler. Various Win32 compilation fixes and
10651 update to the INSTALL.W32 file with (hopefully) more accurate Win32
10652 build instructions.
10655 *) Modify configure script 'Configure' to automatically create crypto/date.h
10656 file under Win32 and also build pem.h from pem.org. New script
10657 util/mkfiles.pl to create the MINFO file on environments that can't do a
10658 'make files': perl util/mkfiles.pl >MINFO should work.
10661 *) Major rework of DES function declarations, in the pursuit of correctness
10662 and purity. As a result, many evil casts evaporated, and some weirdness,
10663 too. You may find this causes warnings in your code. Zapping your evil
10664 casts will probably fix them. Mostly.
10667 *) Fix for a typo in asn1.h. Bug fix to object creation script
10668 obj_dat.pl. It considered a zero in an object definition to mean
10669 "end of object": none of the objects in objects.h have any zeros
10670 so it wasn't spotted.
10671 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
10673 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
10674 Masking (CBCM). In the absence of test vectors, the best I have been able
10675 to do is check that the decrypt undoes the encrypt, so far. Send me test
10676 vectors if you have them.
10679 *) Correct calculation of key length for export ciphers (too much space was
10680 allocated for null ciphers). This has not been tested!
10683 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
10684 message is now correct (it understands "crypto" and "ssl" on its
10685 command line). There is also now an "update" option. This will update
10686 the util/ssleay.num and util/libeay.num files with any new functions.
10688 perl util/mkdef.pl crypto ssl update
10689 it will update them.
10692 *) Overhauled the Perl interface (perl/*):
10693 - ported BN stuff to OpenSSL's different BN library
10694 - made the perl/ source tree CVS-aware
10695 - renamed the package from SSLeay to OpenSSL (the files still contain
10696 their history because I've copied them in the repository)
10697 - removed obsolete files (the test scripts will be replaced
10698 by better Test::Harness variants in the future)
10699 [Ralf S. Engelschall]
10701 *) First cut for a very conservative source tree cleanup:
10702 1. merge various obsolete readme texts into doc/ssleay.txt
10703 where we collect the old documents and readme texts.
10704 2. remove the first part of files where I'm already sure that we no
10705 longer need them because of three reasons: either they are just temporary
10706 files which were left by Eric or they are preserved original files where
10707 I've verified that the diff is also available in the CVS via "cvs diff
10708 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
10709 the crypto/md/ stuff).
10710 [Ralf S. Engelschall]
10712 *) More extension code. Incomplete support for subject and issuer alt
10713 name, issuer and authority key id. Change the i2v function parameters
10714 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
10715 what that's for :-) Fix to ASN1 macro which messed up
10716 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
10719 *) Preliminary support for ENUMERATED type. This is largely copied from the
10723 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
10724 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10726 *) Make sure `make rehash' target really finds the `openssl' program.
10727 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10729 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
10730 like to hear about it if this slows down other processors.
10733 *) Add CygWin32 platform information to Configure script.
10734 [Alan Batie <batie@aahz.jf.intel.com>]
10736 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
10737 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
10739 *) New program nseq to manipulate netscape certificate sequences
10742 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
10746 *) Fixes to BN code. Previously the default was to define BN_RECURSION
10747 but the BN code had some problems that would cause failures when
10748 doing certificate verification and some other functions.
10749 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
10751 *) Add ASN1 and PEM code to support netscape certificate sequences.
10754 *) Add ASN1 and PEM code to support netscape certificate sequences.
10757 *) Add several PKIX and private extended key usage OIDs.
10760 *) Modify the 'ca' program to handle the new extension code. Modify
10761 openssl.cnf for new extension format, add comments.
10764 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
10765 and add a sample to openssl.cnf so req -x509 now adds appropriate
10769 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
10770 error code, add initial support to X509_print() and x509 application.
10773 *) Takes a deep breath and start adding X509 V3 extension support code. Add
10774 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
10775 stuff is currently isolated and isn't even compiled yet.
10778 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
10779 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
10780 Removed the versions check from X509 routines when loading extensions:
10781 this allows certain broken certificates that don't set the version
10782 properly to be processed.
10785 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
10786 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
10787 can still be regenerated with "make depend".
10790 *) Spelling mistake in C version of CAST-128.
10791 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
10793 *) Changes to the error generation code. The perl script err-code.pl
10794 now reads in the old error codes and retains the old numbers, only
10795 adding new ones if necessary. It also only changes the .err files if new
10796 codes are added. The makefiles have been modified to only insert errors
10797 when needed (to avoid needlessly modifying header files). This is done
10798 by only inserting errors if the .err file is newer than the auto generated
10799 C file. To rebuild all the error codes from scratch (the old behaviour)
10800 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
10801 or delete all the .err files.
10804 *) CAST-128 was incorrectly implemented for short keys. The C version has
10805 been fixed, but is untested. The assembler versions are also fixed, but
10806 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
10807 to regenerate it if needed.
10808 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
10809 Hagino <itojun@kame.net>]
10811 *) File was opened incorrectly in randfile.c.
10812 [Ulf Möller <ulf@fitug.de>]
10814 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
10815 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
10816 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
10817 al: it's just almost always a UTCTime. Note this patch adds new error
10818 codes so do a "make errors" if there are problems.
10821 *) Correct Linux 1 recognition in config.
10822 [Ulf Möller <ulf@fitug.de>]
10824 *) Remove pointless MD5 hash when using DSA keys in ca.
10825 [Anonymous <nobody@replay.com>]
10827 *) Generate an error if given an empty string as a cert directory. Also
10828 generate an error if handed NULL (previously returned 0 to indicate an
10829 error, but didn't set one).
10830 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
10832 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
10835 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
10836 parameters. This was causing a warning which killed off the Win32 compile.
10839 *) Remove C++ style comments from crypto/bn/bn_local.h.
10840 [Neil Costigan <neil.costigan@celocom.com>]
10842 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
10843 based on a text string, looking up short and long names and finally
10844 "dot" format. The "dot" format stuff didn't work. Added new function
10845 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
10846 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
10847 OID is not part of the table.
10850 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
10851 X509_LOOKUP_by_alias().
10854 *) Sort openssl functions by name.
10857 *) Get the gendsa program working (hopefully) and add it to app list. Remove
10858 encryption from sample DSA keys (in case anyone is interested the password
10862 *) Make _all_ *_free functions accept a NULL pointer.
10863 [Frans Heymans <fheymans@isaserver.be>]
10865 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
10867 [Anonymous <nobody@replay.com>]
10869 *) s_server should send the CAfile as acceptable CAs, not its own cert.
10870 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
10872 *) Don't blow it for numeric -newkey arguments to apps/req.
10873 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
10875 *) Temp key "for export" tests were wrong in s3_srvr.c.
10876 [Anonymous <nobody@replay.com>]
10878 *) Add prototype for temp key callback functions
10879 SSL_CTX_set_tmp_{rsa,dh}_callback().
10882 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
10883 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
10886 *) X509_name_add_entry() freed the wrong thing after an error.
10887 [Arne Ansper <arne@ats.cyber.ee>]
10889 *) rsa_eay.c would attempt to free a NULL context.
10890 [Arne Ansper <arne@ats.cyber.ee>]
10892 *) BIO_s_socket() had a broken should_retry() on Windoze.
10893 [Arne Ansper <arne@ats.cyber.ee>]
10895 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
10896 [Arne Ansper <arne@ats.cyber.ee>]
10898 *) Make sure the already existing X509_STORE->depth variable is initialized
10899 in X509_STORE_new(), but document the fact that this variable is still
10900 unused in the certificate verification process.
10901 [Ralf S. Engelschall]
10903 *) Fix the various library and apps files to free up pkeys obtained from
10904 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
10907 *) Fix reference counting in X509_PUBKEY_get(). This makes
10908 demos/maurice/example2.c work, amongst others, probably.
10909 [Steve Henson and Ben Laurie]
10911 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
10912 `openssl' and second, the shortcut symlinks for the `openssl <command>'
10913 are no longer created. This way we have a single and consistent command
10914 line interface `openssl <command>', similar to `cvs <command>'.
10915 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
10917 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
10918 BIT STRING wrapper always have zero unused bits.
10921 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
10924 *) Make the top-level INSTALL documentation easier to understand.
10927 *) Makefiles updated to exit if an error occurs in a sub-directory
10928 make (including if user presses ^C) [Paul Sutton]
10930 *) Make Montgomery context stuff explicit in RSA data structure.
10933 *) Fix build order of pem and err to allow for generated pem.h.
10936 *) Fix renumbering bug in X509_NAME_delete_entry().
10939 *) Enhanced the err-ins.pl script so it makes the error library number
10940 global and can add a library name. This is needed for external ASN1 and
10941 other error libraries.
10944 *) Fixed sk_insert which never worked properly.
10947 *) Fix ASN1 macros so they can handle indefinite length constructed
10948 EXPLICIT tags. Some non standard certificates use these: they can now
10952 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
10953 into a single doc/ssleay.txt bundle. This way the information is still
10954 preserved but no longer messes up this directory. Now it's new room for
10955 the new set of documentation files.
10956 [Ralf S. Engelschall]
10958 *) SETs were incorrectly DER encoded. This was a major pain, because they
10959 shared code with SEQUENCEs, which aren't coded the same. This means that
10960 almost everything to do with SETs or SEQUENCEs has either changed name or
10961 number of arguments.
10962 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
10964 *) Fix test data to work with the above.
10967 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
10968 was already fixed by Eric for 0.9.1 it seems.
10969 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
10971 *) Autodetect FreeBSD3.
10974 *) Fix various bugs in Configure. This affects the following platforms:
10978 unixware-2.0-pentium
10982 *) Eliminate generated files from CVS. Reorder tests to regenerate files
10983 before they are needed.
10986 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
10990 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
10992 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
10993 changed SSLeay to OpenSSL in version strings.
10994 [Ralf S. Engelschall]
10996 *) Some fixups to the top-level documents.
10999 *) Fixed the nasty bug where rsaref.h was not found under compile-time
11000 because the symlink to include/ was missing.
11001 [Ralf S. Engelschall]
11003 *) Incorporated the popular no-RSA/DSA-only patches
11004 which allow to compile a RSA-free SSLeay.
11005 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
11007 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
11008 when "ssleay" is still not found.
11009 [Ralf S. Engelschall]
11011 *) Added more platforms to Configure: Cray T3E, HPUX 11,
11012 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
11014 *) Updated the README file.
11015 [Ralf S. Engelschall]
11017 *) Added various .cvsignore files in the CVS repository subdirs
11018 to make a "cvs update" really silent.
11019 [Ralf S. Engelschall]
11021 *) Recompiled the error-definition header files and added
11022 missing symbols to the Win32 linker tables.
11023 [Ralf S. Engelschall]
11025 *) Cleaned up the top-level documents;
11026 o new files: CHANGES and LICENSE
11027 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
11028 o merged COPYRIGHT into LICENSE
11029 o removed obsolete TODO file
11030 o renamed MICROSOFT to INSTALL.W32
11031 [Ralf S. Engelschall]
11033 *) Removed dummy files from the 0.9.1b source tree:
11034 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
11035 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
11036 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
11037 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
11038 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
11039 [Ralf S. Engelschall]
11041 *) Added various platform portability fixes.
11044 *) The Genesis of the OpenSSL rpject:
11045 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
11046 Young and Tim J. Hudson created while they were working for C2Net until
11048 [The OpenSSL Project]
11051 Changes between 0.9.0b and 0.9.1b [not released]
11053 *) Updated a few CA certificates under certs/
11056 *) Changed some BIGNUM api stuff.
11059 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
11060 DGUX x86, Linux Alpha, etc.
11063 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
11064 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
11068 *) Add -strparse option to asn1pars program which parses nested
11070 [Dr Stephen Henson <shenson@bigfoot.com>]
11072 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
11075 *) DSA fix for "ca" program.
11078 *) Added "-genkey" option to "dsaparam" program.
11081 *) Added RIPE MD160 (rmd160) message digest.
11084 *) Added -a (all) option to "ssleay version" command.
11087 *) Added PLATFORM define which is the id given to Configure.
11090 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
11093 *) Extended the ASN.1 parser routines.
11096 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
11099 *) Added a BN_CTX to the BN library.
11102 *) Fixed the weak key values in DES library
11105 *) Changed API in EVP library for cipher aliases.
11108 *) Added support for RC2/64bit cipher.
11111 *) Converted the lhash library to the crypto/mem.c functions.
11114 *) Added more recognized ASN.1 object ids.
11117 *) Added more RSA padding checks for SSL/TLS.
11120 *) Added BIO proxy/filter functionality.
11123 *) Added extra_certs to SSL_CTX which can be used
11124 send extra CA certificates to the client in the CA cert chain sending
11125 process. It can be configured with SSL_CTX_add_extra_chain_cert().
11128 *) Now Fortezza is denied in the authentication phase because
11129 this is key exchange mechanism is not supported by SSLeay at all.
11132 *) Additional PKCS1 checks.
11135 *) Support the string "TLSv1" for all TLS v1 ciphers.
11138 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
11139 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
11142 *) Fixed a few memory leaks.
11145 *) Fixed various code and comment typos.
11148 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
11149 bytes sent in the client random.
11150 [Edward Bishop <ebishop@spyglass.com>]
projects / openssl.git / blob