5 This is a high-level summary of the most important changes.
6 For a full list of changes, see the git commit log; for example,
7 https://github.com/openssl/openssl/commits/ and pick the appropriate
10 Changes between 1.1.1 and 3.0.0 [xx XXX xxxx]
12 *) s390x assembly pack: add hardware-support for P-256, P-384, P-521,
13 X25519, X448, Ed25519 and Ed448.
16 *) Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just
20 *) Deprecated the public definition of ERR_STATE as well as the function
21 ERR_get_state(). This is done in preparation of making ERR_STATE an
25 *) Added ERR functionality to give callers access to the stored function
26 names that have replaced the older function code based functions.
28 New functions are ERR_get_error_func(), ERR_peek_error_func(),
29 ERR_peek_last_error_func(), ERR_get_error_data(), ERR_peek_error_data(),
30 ERR_peek_last_error_data(), ERR_get_error_all(), ERR_peek_error_all()
31 and ERR_peek_last_error_all().
33 These functions have become deprecated: ERR_get_error_line_data(),
34 ERR_peek_error_line_data(), ERR_peek_last_error_line_data() and
35 ERR_func_error_string().
38 *) Extended testing to be verbose for failing tests only. The make variables
39 VERBOSE_FAILURE or VF can be used to enable this:
41 $ make VF=1 test # Unix
42 $ mms /macro=(VF=1) test ! OpenVMS
43 $ nmake VF=1 test # Windows
47 *) For built-in EC curves, ensure an EC_GROUP built from the curve name is
48 used even when parsing explicit parameters, when loading a serialized key
49 or calling `EC_GROUP_new_from_ecpkparameters()`/
50 `EC_GROUP_new_from_ecparameters()`.
51 This prevents bypass of security hardening and performance gains,
52 especially for curves with specialized EC_METHODs.
53 By default, if a key encoded with explicit parameters is loaded and later
54 serialized, the output is still encoded with explicit parameters, even if
55 internally a "named" EC_GROUP is used for computation.
58 *) Compute ECC cofactors if not provided during EC_GROUP construction. Before
59 this change, EC_GROUP_set_generator would accept order and/or cofactor as
60 NULL. After this change, only the cofactor parameter can be NULL. It also
61 does some minimal sanity checks on the passed order.
65 *) Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
66 An attack is simple, if the first CMS_recipientInfo is valid but the
67 second CMS_recipientInfo is chosen ciphertext. If the second
68 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
69 encryption key will be replaced by garbage, and the message cannot be
70 decoded, but if the RSA decryption fails, the correct encryption key is
71 used and the recipient will not notice the attack.
72 As a work around for this potential attack the length of the decrypted
73 key must be equal to the cipher default key length, in case the
74 certifiate is not given and all recipientInfo are tried out.
75 The old behaviour can be re-enabled in the CMS code by setting the
76 CMS_DEBUG_DECRYPT flag.
79 *) Early start up entropy quality from the DEVRANDOM seed source has been
80 improved for older Linux systems. The RAND subsystem will wait for
81 /dev/random to be producing output before seeding from /dev/urandom.
82 The seeded state is stored for future library initialisations using
83 a system global shared memory segment. The shared memory identifier
84 can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to
85 the desired value. The default identifier is 114.
88 *) Revised BN_generate_prime_ex to not avoid factors 2..17863 in p-1
89 when primes for RSA keys are computed.
90 Since we previously always generated primes == 2 (mod 3) for RSA keys,
91 the 2-prime and 3-prime RSA modules were easy to distinguish, since
92 N = p*q = 1 (mod 3), but N = p*q*r = 2 (mod 3). Therefore fingerprinting
93 2-prime vs. 3-prime RSA keys was possible by computing N mod 3.
94 This avoids possible fingerprinting of newly generated RSA modules.
97 *) Correct the extended master secret constant on EBCDIC systems. Without this
98 fix TLS connections between an EBCDIC system and a non-EBCDIC system that
99 negotiate EMS will fail. Unfortunately this also means that TLS connections
100 between EBCDIC systems with this fix, and EBCDIC systems without this
101 fix will fail if they negotiate EMS.
104 *) Changed the library initialisation so that the config file is now loaded
105 by default. This was already the case for libssl. It now occurs for both
106 libcrypto and libssl. Use the OPENSSL_INIT_NO_LOAD_CONFIG option to
107 OPENSSL_init_crypto() to suppress automatic loading of a config file.
110 *) Introduced new error raising macros, ERR_raise() and ERR_raise_data(),
111 where the former acts as a replacement for ERR_put_error(), and the
112 latter replaces the combination ERR_put_error()+ERR_add_error_data().
113 ERR_raise_data() adds more flexibility by taking a format string and
114 an arbitrary number of arguments following it, to be processed with
118 *) Introduced a new function, OSSL_PROVIDER_available(), which can be used
119 to check if a named provider is loaded and available. When called, it
120 will also activate all fallback providers if such are still present.
123 *) Enforce a minimum DH modulus size of 512 bits.
126 *) Changed DH parameters to generate the order q subgroup instead of 2q.
127 Previously generated DH parameters are still accepted by DH_check
128 but DH_generate_key works around that by clearing bit 0 of the
129 private key for those. This avoids leaking bit 0 of the private key.
132 *) Significantly reduce secure memory usage by the randomness pools.
135 *) {CRYPTO,OPENSSL}_mem_debug_{push,pop} are now no-ops and have been
139 *) A new type, EVP_KEYEXCH, has been introduced to represent key exchange
140 algorithms. An implementation of a key exchange algorithm can be obtained
141 by using the function EVP_KEYEXCH_fetch(). An EVP_KEYEXCH algorithm can be
142 used in a call to EVP_PKEY_derive_init_ex() which works in a similar way to
143 the older EVP_PKEY_derive_init() function. See the man pages for the new
144 functions for further details.
147 *) The EVP_PKEY_CTX_set_dh_pad() macro has now been converted to a function.
150 *) Removed the function names from error messages and deprecated the
153 *) Removed NextStep support and the macro OPENSSL_UNISTD
156 *) Removed DES_check_key. Also removed OPENSSL_IMPLEMENT_GLOBAL,
157 OPENSSL_GLOBAL_REF, OPENSSL_DECLARE_GLOBAL.
158 Also removed "export var as function" capability; we do not export
159 variables, only functions.
162 *) RC5_32_set_key has been changed to return an int type, with 0 indicating
163 an error and 1 indicating success. In previous versions of OpenSSL this
164 was a void type. If a key was set longer than the maximum possible this
168 *) Support SM2 signing and verification schemes with X509 certificate.
171 *) Use SHA256 as the default digest for TS query in the ts app.
174 *) Change PBKDF2 to conform to SP800-132 instead of the older PKCS5 RFC2898.
175 This checks that the salt length is at least 128 bits, the derived key
176 length is at least 112 bits, and that the iteration count is at least 1000.
177 For backwards compatibility these checks are disabled by default in the
178 default provider, but are enabled by default in the fips provider.
179 To enable or disable these checks use the control
180 EVP_KDF_CTRL_SET_PBKDF2_PKCS5_MODE.
183 *) Default cipher lists/suites are now available via a function, the
184 #defines are deprecated.
187 *) Add target VC-WIN32-UWP, VC-WIN64A-UWP, VC-WIN32-ARM-UWP and
188 VC-WIN64-ARM-UWP in Windows OneCore target for making building libraries
189 for Windows Store apps easier. Also, the "no-uplink" option has been added.
192 *) Join the directories crypto/x509 and crypto/x509v3
195 *) Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
196 This changes the size when using the genpkey app when no size is given. It
197 fixes an omission in earlier changes that changed all RSA, DSA and DH
198 generation apps to use 2048 bits by default.
201 *) Added command 'openssl kdf' that uses the EVP_KDF API.
204 *) Added command 'openssl mac' that uses the EVP_MAC API.
207 *) Added OPENSSL_info() to get diverse built-in OpenSSL data, such
208 as default directories. Also added the command 'openssl info'
209 for scripting purposes.
212 *) The functions AES_ige_encrypt() and AES_bi_ige_encrypt() have been
213 deprecated. These undocumented functions were never integrated into the EVP
214 layer and implement the AES Infinite Garble Extension (IGE) mode and AES
215 Bi-directional IGE mode. These modes were never formally standardised and
216 usage of these functions is believed to be very small. In particular
217 AES_bi_ige_encrypt() has a known bug. It accepts 2 AES keys, but only one
218 is ever used. The security implications are believed to be minimal, but
219 this issue was never fixed for backwards compatibility reasons. New code
220 should not use these modes.
223 *) Add prediction resistance to the DRBG reseeding process.
226 *) Limit the number of blocks in a data unit for AES-XTS to 2^20 as
227 mandated by IEEE Std 1619-2018.
230 *) Added newline escaping functionality to a filename when using openssl dgst.
231 This output format is to replicate the output format found in the '*sum'
232 checksum programs. This aims to preserve backward compatibility.
233 [Matt Eaton, Richard Levitte, and Paul Dale]
235 *) Removed the heartbeat message in DTLS feature, as it has very
236 little usage and doesn't seem to fulfill a valuable purpose.
237 The configuration option is now deprecated.
240 *) Changed the output of 'openssl {digestname} < file' to display the
241 digest name in its output.
244 *) Added a new generic trace API which provides support for enabling
245 instrumentation through trace output. This feature is mainly intended
246 as an aid for developers and is disabled by default. To utilize it,
247 OpenSSL needs to be configured with the `enable-trace` option.
249 If the tracing API is enabled, the application can activate trace output
250 by registering BIOs as trace channels for a number of tracing and debugging
253 The 'openssl' application has been expanded to enable any of the types
254 available via environment variables defined by the user, and serves as
255 one possible example on how to use this functionality.
256 [Richard Levitte & Matthias St. Pierre]
258 *) Added build tests for C++. These are generated files that only do one
259 thing, to include one public OpenSSL head file each. This tests that
260 the public header files can be usefully included in a C++ application.
262 This test isn't enabled by default. It can be enabled with the option
263 'enable-buildtest-c++'.
266 *) Add Single Step KDF (EVP_KDF_SS) to EVP_KDF.
269 *) Add KMAC to EVP_MAC.
272 *) Added property based algorithm implementation selection framework to
276 *) Added SCA hardening for modular field inversion in EC_GROUP through
277 a new dedicated field_inv() pointer in EC_METHOD.
278 This also addresses a leakage affecting conversions from projective
279 to affine coordinates.
280 [Billy Bob Brumley, Nicola Tuveri]
282 *) Added EVP_KDF, an EVP layer KDF API, to simplify adding KDF and PRF
283 implementations. This includes an EVP_PKEY to EVP_KDF bridge for
284 those algorithms that were already supported through the EVP_PKEY API
285 (scrypt, TLS1 PRF and HKDF). The low-level KDF functions for PBKDF2
286 and scrypt are now wrappers that call EVP_KDF.
289 *) Build devcrypto engine as a dynamic engine.
292 *) Add keyed BLAKE2 to EVP_MAC.
295 *) Fix a bug in the computation of the endpoint-pair shared secret used
296 by DTLS over SCTP. This breaks interoperability with older versions
297 of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime
298 switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling
299 interoperability with such broken implementations. However, enabling
300 this switch breaks interoperability with correct implementations.
302 *) Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
303 re-used X509_PUBKEY object if the second PUBKEY is malformed.
306 *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
309 *) Change the license to the Apache License v2.0.
312 *) Change the possible version information given with OPENSSL_API_COMPAT.
313 It may be a pre-3.0.0 style numerical version number as it was defined
314 in 1.1.0, and it may also simply take the major version number.
316 Because of the version numbering of pre-3.0.0 releases, the values 0,
317 1 and 2 are equivalent to 0x00908000L (0.9.8), 0x10000000L (1.0.0) and
318 0x10100000L (1.1.0), respectively.
321 *) Switch to a new version scheme using three numbers MAJOR.MINOR.PATCH.
323 o Major releases (indicated by incrementing the MAJOR release number)
324 may introduce incompatible API/ABI changes.
325 o Minor releases (indicated by incrementing the MINOR release number)
326 may introduce new features but retain API/ABI compatibility.
327 o Patch releases (indicated by incrementing the PATCH number)
328 are intended for bug fixes and other improvements of existing
329 features only (like improving performance or adding documentation)
330 and retain API/ABI compatibility.
333 *) Add support for RFC5297 SIV mode (siv128), including AES-SIV.
336 *) Remove the 'dist' target and add a tarball building script. The
337 'dist' target has fallen out of use, and it shouldn't be
338 necessary to configure just to create a source distribution.
341 *) Recreate the OS390-Unix config target. It no longer relies on a
342 special script like it did for OpenSSL pre-1.1.0.
345 *) Instead of having the source directories listed in Configure, add
346 a 'build.info' keyword SUBDIRS to indicate what sub-directories to
350 *) Add GMAC to EVP_MAC.
353 *) Ported the HMAC, CMAC and SipHash EVP_PKEY_METHODs to EVP_MAC.
356 *) Added EVP_MAC, an EVP layer MAC API, to simplify adding MAC
357 implementations. This includes a generic EVP_PKEY to EVP_MAC bridge,
358 to facilitate the continued use of MACs through raw private keys in
359 functionality such as EVP_DigestSign* and EVP_DigestVerify*.
362 *) Deprecate ECDH_KDF_X9_62() and mark its replacement as internal. Users
363 should use the EVP interface instead (EVP_PKEY_CTX_set_ecdh_kdf_type).
366 *) Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for
367 the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names
368 are retained for backwards compatibility.
371 *) AES-XTS mode now enforces that its two keys are different to mitigate
372 the attacked described in "Efficient Instantiations of Tweakable
373 Blockciphers and Refinements to Modes OCB and PMAC" by Phillip Rogaway.
374 Details of this attack can be obtained from:
375 http://web.cs.ucdavis.edu/%7Erogaway/papers/offsets.pdf
378 *) Rename the object files, i.e. give them other names than in previous
379 versions. Their names now include the name of the final product, as
380 well as its type mnemonic (bin, lib, shlib).
383 *) Added new option for 'openssl list', '-objects', which will display the
384 list of built in objects, i.e. OIDs with names.
387 *) Added support for Linux Kernel TLS data-path. The Linux Kernel data-path
388 improves application performance by removing data copies and providing
389 applications with zero-copy system calls such as sendfile and splice.
392 Changes between 1.1.1a and 1.1.1b [xx XXX xxxx]
394 *) Change the info callback signals for the start and end of a post-handshake
395 message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START
396 and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get
397 confused by this and assume that a TLSv1.2 renegotiation has started. This
398 can break KeyUpdate handling. Instead we no longer signal the start and end
399 of a post handshake message exchange (although the messages themselves are
400 still signalled). This could break some applications that were expecting
401 the old signals. However without this KeyUpdate is not usable for many
405 Changes between 1.1.1 and 1.1.1a [20 Nov 2018]
407 *) Timing vulnerability in DSA signature generation
409 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
410 timing side channel attack. An attacker could use variations in the signing
411 algorithm to recover the private key.
413 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
417 *) Timing vulnerability in ECDSA signature generation
419 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
420 timing side channel attack. An attacker could use variations in the signing
421 algorithm to recover the private key.
423 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
427 *) Fixed the issue that RAND_add()/RAND_seed() silently discards random input
428 if its length exceeds 4096 bytes. The limit has been raised to a buffer size
429 of two gigabytes and the error handling improved.
431 This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been
432 categorized as a normal bug, not a security issue, because the DRBG reseeds
433 automatically and is fully functional even without additional randomness
434 provided by the application.
436 Changes between 1.1.0i and 1.1.1 [11 Sep 2018]
438 *) Add a new ClientHello callback. Provides a callback interface that gives
439 the application the ability to adjust the nascent SSL object at the
440 earliest stage of ClientHello processing, immediately after extensions have
441 been collected but before they have been processed. In particular, this
442 callback can adjust the supported TLS versions in response to the contents
446 *) Add SM2 base algorithm support.
449 *) s390x assembly pack: add (improved) hardware-support for the following
450 cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb,
451 aes-cfb/cfb8, aes-ecb.
454 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
455 parameter is no longer accepted, as it leads to a corrupt table. NULL
456 pem_str is reserved for alias entries only.
459 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
460 step for prime curves. The new implementation is based on formulae from
461 differential addition-and-doubling in homogeneous projective coordinates
462 from Izu-Takagi "A fast parallel elliptic curve multiplication resistant
463 against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves
464 and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified
465 to work in projective coordinates.
466 [Billy Bob Brumley, Nicola Tuveri]
468 *) Change generating and checking of primes so that the error rate of not
469 being prime depends on the intended use based on the size of the input.
470 For larger primes this will result in more rounds of Miller-Rabin.
471 The maximal error rate for primes with more than 1080 bits is lowered
473 [Kurt Roeckx, Annie Yousar]
475 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
478 *) The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
479 moving between systems, and to avoid confusion when a Windows build is
480 done with mingw vs with MSVC. For POSIX installs, there's still a
481 symlink or copy named 'tsget' to avoid that confusion as well.
484 *) Revert blinding in ECDSA sign and instead make problematic addition
485 length-invariant. Switch even to fixed-length Montgomery multiplication.
488 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
489 step for binary curves. The new implementation is based on formulae from
490 differential addition-and-doubling in mixed Lopez-Dahab projective
491 coordinates, modified to independently blind the operands.
492 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
494 *) Add a scaffold to optionally enhance the Montgomery ladder implementation
495 for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing
496 EC_METHODs to implement their own specialized "ladder step", to take
497 advantage of more favorable coordinate systems or more efficient
498 differential addition-and-doubling algorithms.
499 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
501 *) Modified the random device based seed sources to keep the relevant
502 file descriptors open rather than reopening them on each access.
503 This allows such sources to operate in a chroot() jail without
504 the associated device nodes being available. This behaviour can be
505 controlled using RAND_keep_random_devices_open().
508 *) Numerous side-channel attack mitigations have been applied. This may have
509 performance impacts for some algorithms for the benefit of improved
510 security. Specific changes are noted in this change log by their respective
514 *) AIX shared library support overhaul. Switch to AIX "natural" way of
515 handling shared libraries, which means collecting shared objects of
516 different versions and bitnesses in one common archive. This allows to
517 mitigate conflict between 1.0 and 1.1 side-by-side installations. It
518 doesn't affect the way 3rd party applications are linked, only how
519 multi-version installation is managed.
522 *) Make ec_group_do_inverse_ord() more robust and available to other
523 EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
524 mitigations are applied to the fallback BN_mod_inverse().
525 When using this function rather than BN_mod_inverse() directly, new
526 EC cryptosystem implementations are then safer-by-default.
529 *) Add coordinate blinding for EC_POINT and implement projective
530 coordinate blinding for generic prime curves as a countermeasure to
531 chosen point SCA attacks.
532 [Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley]
534 *) Add blinding to ECDSA and DSA signatures to protect against side channel
535 attacks discovered by Keegan Ryan (NCC Group).
538 *) Enforce checking in the pkeyutl command line app to ensure that the input
539 length does not exceed the maximum supported digest length when performing
540 a sign, verify or verifyrecover operation.
543 *) SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
544 I/O in combination with something like select() or poll() will hang. This
545 can be turned off again using SSL_CTX_clear_mode().
546 Many applications do not properly handle non-application data records, and
547 TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
548 around the problems in those applications, but can also break some.
549 It's recommended to read the manpages about SSL_read(), SSL_write(),
550 SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
551 SSL_CTX_set_read_ahead() again.
554 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
555 now allow empty (zero character) pass phrases.
558 *) Apply blinding to binary field modular inversion and remove patent
559 pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
562 *) Deprecate ec2_mult.c and unify scalar multiplication code paths for
563 binary and prime elliptic curves.
566 *) Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
567 constant time fixed point multiplication.
570 *) Revise elliptic curve scalar multiplication with timing attack
571 defenses: ec_wNAF_mul redirects to a constant time implementation
572 when computing fixed point and variable point multiplication (which
573 in OpenSSL are mostly used with secret scalars in keygen, sign,
574 ECDH derive operations).
575 [Billy Bob Brumley, Nicola Tuveri, Cesar Pereida García,
578 *) Updated CONTRIBUTING
581 *) Updated DRBG / RAND to request nonce and additional low entropy
582 randomness from the system.
583 [Matthias St. Pierre]
585 *) Updated 'openssl rehash' to use OpenSSL consistent default.
588 *) Moved the load of the ssl_conf module to libcrypto, which helps
589 loading engines that libssl uses before libssl is initialised.
592 *) Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
595 *) Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
596 [Ingo Schwarze, Rich Salz]
598 *) Added output of accepting IP address and port for 'openssl s_server'
601 *) Added a new API for TLSv1.3 ciphersuites:
602 SSL_CTX_set_ciphersuites()
603 SSL_set_ciphersuites()
606 *) Memory allocation failures consistently add an error to the error
610 *) Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
611 in libcrypto when run as setuid/setgid.
614 *) Load any config file by default when libssl is used.
617 *) Added new public header file <openssl/rand_drbg.h> and documentation
618 for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
619 [Matthias St. Pierre]
621 *) QNX support removed (cannot find contributors to get their approval
622 for the license change).
625 *) TLSv1.3 replay protection for early data has been implemented. See the
626 SSL_read_early_data() man page for further details.
629 *) Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
630 configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
631 below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
632 In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
633 would otherwise inadvertently disable all TLSv1.3 ciphersuites the
634 configuration has been separated out. See the ciphers man page or the
635 SSL_CTX_set_ciphersuites() man page for more information.
638 *) On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
639 in responder mode now supports the new "-multi" option, which
640 spawns the specified number of child processes to handle OCSP
641 requests. The "-timeout" option now also limits the OCSP
642 responder's patience to wait to receive the full client request
643 on a newly accepted connection. Child processes are respawned
644 as needed, and the CA index file is automatically reloaded
645 when changed. This makes it possible to run the "ocsp" responder
646 as a long-running service, making the OpenSSL CA somewhat more
647 feature-complete. In this mode, most diagnostic messages logged
648 after entering the event loop are logged via syslog(3) rather than
652 *) Added support for X448 and Ed448. Heavily based on original work by
656 *) Extend OSSL_STORE with capabilities to search and to narrow the set of
657 objects loaded. This adds the functions OSSL_STORE_expect() and
658 OSSL_STORE_find() as well as needed tools to construct searches and
659 get the search data out of them.
662 *) Support for TLSv1.3 added. Note that users upgrading from an earlier
663 version of OpenSSL should review their configuration settings to ensure
664 that they are still appropriate for TLSv1.3. For further information see:
665 https://wiki.openssl.org/index.php/TLS1.3
668 *) Grand redesign of the OpenSSL random generator
670 The default RAND method now utilizes an AES-CTR DRBG according to
671 NIST standard SP 800-90Ar1. The new random generator is essentially
672 a port of the default random generator from the OpenSSL FIPS 2.0
673 object module. It is a hybrid deterministic random bit generator
674 using an AES-CTR bit stream and which seeds and reseeds itself
675 automatically using trusted system entropy sources.
677 Some of its new features are:
678 o Support for multiple DRBG instances with seed chaining.
679 o The default RAND method makes use of a DRBG.
680 o There is a public and private DRBG instance.
681 o The DRBG instances are fork-safe.
682 o Keep all global DRBG instances on the secure heap if it is enabled.
683 o The public and private DRBG instance are per thread for lock free
685 [Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre]
687 *) Changed Configure so it only says what it does and doesn't dump
688 so much data. Instead, ./configdata.pm should be used as a script
689 to display all sorts of configuration data.
692 *) Added processing of "make variables" to Configure.
695 *) Added SHA512/224 and SHA512/256 algorithm support.
698 *) The last traces of Netware support, first removed in 1.1.0, have
702 *) Get rid of Makefile.shared, and in the process, make the processing
703 of certain files (rc.obj, or the .def/.map/.opt files produced from
704 the ordinal files) more visible and hopefully easier to trace and
705 debug (or make silent).
708 *) Make it possible to have environment variable assignments as
709 arguments to config / Configure.
712 *) Add multi-prime RSA (RFC 8017) support.
715 *) Add SM3 implemented according to GB/T 32905-2016
716 [ Jack Lloyd <jack.lloyd@ribose.com>,
717 Ronald Tse <ronald.tse@ribose.com>,
718 Erick Borsboom <erick.borsboom@ribose.com> ]
720 *) Add 'Maximum Fragment Length' TLS extension negotiation and support
721 as documented in RFC6066.
722 Based on a patch from Tomasz Moń
723 [Filipe Raimundo da Silva]
725 *) Add SM4 implemented according to GB/T 32907-2016.
726 [ Jack Lloyd <jack.lloyd@ribose.com>,
727 Ronald Tse <ronald.tse@ribose.com>,
728 Erick Borsboom <erick.borsboom@ribose.com> ]
730 *) Reimplement -newreq-nodes and ERR_error_string_n; the
731 original author does not agree with the license change.
734 *) Add ARIA AEAD TLS support.
737 *) Some macro definitions to support VS6 have been removed. Visual
738 Studio 6 has not worked since 1.1.0
741 *) Add ERR_clear_last_mark(), to allow callers to clear the last mark
742 without clearing the errors.
745 *) Add "atfork" functions. If building on a system that without
746 pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application
747 requirements. The RAND facility now uses/requires this.
753 *) The UI API becomes a permanent and integral part of libcrypto, i.e.
754 not possible to disable entirely. However, it's still possible to
755 disable the console reading UI method, UI_OpenSSL() (use UI_null()
758 To disable, configure with 'no-ui-console'. 'no-ui' is still
759 possible to use as an alias. Check at compile time with the
760 macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still
761 possible to check and is an alias for OPENSSL_NO_UI_CONSOLE.
764 *) Add a STORE module, which implements a uniform and URI based reader of
765 stores that can contain keys, certificates, CRLs and numerous other
766 objects. The main API is loosely based on a few stdio functions,
767 and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof,
768 OSSL_STORE_error and OSSL_STORE_close.
769 The implementation uses backends called "loaders" to implement arbitrary
770 URI schemes. There is one built in "loader" for the 'file' scheme.
773 *) Add devcrypto engine. This has been implemented against cryptodev-linux,
774 then adjusted to work on FreeBSD 8.4 as well.
775 Enable by configuring with 'enable-devcryptoeng'. This is done by default
776 on BSD implementations, as cryptodev.h is assumed to exist on all of them.
779 *) Module names can prefixed with OSSL_ or OPENSSL_. This affects
780 util/mkerr.pl, which is adapted to allow those prefixes, leading to
781 error code calls like this:
783 OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER);
785 With this change, we claim the namespaces OSSL and OPENSSL in a manner
786 that can be encoded in C. For the foreseeable future, this will only
788 [Richard Levitte and Tim Hudson]
790 *) Removed BSD cryptodev engine.
793 *) Add a build target 'build_all_generated', to build all generated files
794 and only that. This can be used to prepare everything that requires
795 things like perl for a system that lacks perl and then move everything
796 to that system and do the rest of the build there.
799 *) In the UI interface, make it possible to duplicate the user data. This
800 can be used by engines that need to retain the data for a longer time
801 than just the call where this user data is passed.
804 *) Ignore the '-named_curve auto' value for compatibility of applications
806 [Tomas Mraz <tmraz@fedoraproject.org>]
808 *) Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2
809 bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such
810 alerts across multiple records (some of which could be empty). In practice
811 it make no sense to send an empty alert record, or to fragment one. TLSv1.3
812 prohibts this altogether and other libraries (BoringSSL, NSS) do not
813 support this at all. Supporting it adds significant complexity to the
814 record layer, and its removal is unlikely to cause inter-operability
818 *) Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed
819 with Z. These are meant to replace LONG and ZLONG and to be size safe.
820 The use of LONG and ZLONG is discouraged and scheduled for deprecation
824 *) Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string,
825 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t.
826 [Richard Levitte, Andy Polyakov]
828 *) Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine()
832 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
833 platform rather than 'mingw'.
836 *) The functions X509_STORE_add_cert and X509_STORE_add_crl return
837 success if they are asked to add an object which already exists
838 in the store. This change cascades to other functions which load
839 certificates and CRLs.
842 *) x86_64 assembly pack: annotate code with DWARF CFI directives to
843 facilitate stack unwinding even from assembly subroutines.
846 *) Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN.
847 Also remove OPENSSL_GLOBAL entirely, as it became a no-op.
850 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
851 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
852 which is the minimum version we support.
855 *) Certificate time validation (X509_cmp_time) enforces stricter
856 compliance with RFC 5280. Fractional seconds and timezone offsets
857 are no longer allowed.
860 *) Add support for ARIA
863 *) s_client will now send the Server Name Indication (SNI) extension by
864 default unless the new "-noservername" option is used. The server name is
865 based on the host provided to the "-connect" option unless overridden by
869 *) Add support for SipHash
872 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0
873 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
874 prevent issues where no progress is being made and the peer continually
875 sends unrecognised record types, using up resources processing them.
878 *) 'openssl passwd' can now produce SHA256 and SHA512 based output,
879 using the algorithm defined in
880 https://www.akkadia.org/drepper/SHA-crypt.txt
883 *) Heartbeat support has been removed; the ABI is changed for now.
884 [Richard Levitte, Rich Salz]
886 *) Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
889 *) The RSA "null" method, which was partially supported to avoid patent
890 issues, has been replaced to always returns NULL.
894 Changes between 1.1.0h and 1.1.0i [xx XXX xxxx]
896 *) Client DoS due to large DH parameter
898 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
899 malicious server can send a very large prime value to the client. This will
900 cause the client to spend an unreasonably long period of time generating a
901 key for this prime resulting in a hang until the client has finished. This
902 could be exploited in a Denial Of Service attack.
904 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
908 *) Cache timing vulnerability in RSA Key Generation
910 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
911 a cache timing side channel attack. An attacker with sufficient access to
912 mount cache timing attacks during the RSA key generation process could
913 recover the private key.
915 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
916 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
920 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
921 parameter is no longer accepted, as it leads to a corrupt table. NULL
922 pem_str is reserved for alias entries only.
925 *) Revert blinding in ECDSA sign and instead make problematic addition
926 length-invariant. Switch even to fixed-length Montgomery multiplication.
929 *) Change generating and checking of primes so that the error rate of not
930 being prime depends on the intended use based on the size of the input.
931 For larger primes this will result in more rounds of Miller-Rabin.
932 The maximal error rate for primes with more than 1080 bits is lowered
934 [Kurt Roeckx, Annie Yousar]
936 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
939 *) Add blinding to ECDSA and DSA signatures to protect against side channel
940 attacks discovered by Keegan Ryan (NCC Group).
943 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
944 now allow empty (zero character) pass phrases.
947 *) Certificate time validation (X509_cmp_time) enforces stricter
948 compliance with RFC 5280. Fractional seconds and timezone offsets
949 are no longer allowed.
952 *) Fixed a text canonicalisation bug in CMS
954 Where a CMS detached signature is used with text content the text goes
955 through a canonicalisation process first prior to signing or verifying a
956 signature. This process strips trailing space at the end of lines, converts
957 line terminators to CRLF and removes additional trailing line terminators
958 at the end of a file. A bug in the canonicalisation process meant that
959 some characters, such as form-feed, were incorrectly treated as whitespace
960 and removed. This is contrary to the specification (RFC5485). This fix
961 could mean that detached text data signed with an earlier version of
962 OpenSSL 1.1.0 may fail to verify using the fixed version, or text data
963 signed with a fixed OpenSSL may fail to verify with an earlier version of
964 OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data
965 and use the "-binary" flag (for the "cms" command line application) or set
966 the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()).
969 Changes between 1.1.0g and 1.1.0h [27 Mar 2018]
971 *) Constructed ASN.1 types with a recursive definition could exceed the stack
973 Constructed ASN.1 types with a recursive definition (such as can be found
974 in PKCS7) could eventually exceed the stack given malicious input with
975 excessive recursion. This could result in a Denial Of Service attack. There
976 are no such structures used within SSL/TLS that come from untrusted sources
977 so this is considered safe.
979 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
984 *) Incorrect CRYPTO_memcmp on HP-UX PA-RISC
986 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
987 effectively reduced to only comparing the least significant bit of each
988 byte. This allows an attacker to forge messages that would be considered as
989 authenticated in an amount of tries lower than that guaranteed by the
990 security claims of the scheme. The module can only be compiled by the
991 HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
993 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
998 *) Add a build target 'build_all_generated', to build all generated files
999 and only that. This can be used to prepare everything that requires
1000 things like perl for a system that lacks perl and then move everything
1001 to that system and do the rest of the build there.
1004 *) Backport SSL_OP_NO_RENGOTIATION
1006 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
1007 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
1008 changes this is no longer possible in 1.1.0. Therefore the new
1009 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
1010 1.1.0 to provide equivalent functionality.
1012 Note that if an application built against 1.1.0h headers (or above) is run
1013 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
1014 accepted but nothing will happen, i.e. renegotiation will not be prevented.
1017 *) Removed the OS390-Unix config target. It relied on a script that doesn't
1021 *) rsaz_1024_mul_avx2 overflow bug on x86_64
1023 There is an overflow bug in the AVX2 Montgomery multiplication procedure
1024 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
1025 Analysis suggests that attacks against RSA and DSA as a result of this
1026 defect would be very difficult to perform and are not believed likely.
1027 Attacks against DH1024 are considered just feasible, because most of the
1028 work necessary to deduce information about a private key may be performed
1029 offline. The amount of resources required for such an attack would be
1030 significant. However, for an attack on TLS to be meaningful, the server
1031 would have to share the DH1024 private key among multiple clients, which is
1032 no longer an option since CVE-2016-0701.
1034 This only affects processors that support the AVX2 but not ADX extensions
1035 like Intel Haswell (4th generation).
1037 This issue was reported to OpenSSL by David Benjamin (Google). The issue
1038 was originally found via the OSS-Fuzz project.
1042 Changes between 1.1.0f and 1.1.0g [2 Nov 2017]
1044 *) bn_sqrx8x_internal carry bug on x86_64
1046 There is a carry propagating bug in the x86_64 Montgomery squaring
1047 procedure. No EC algorithms are affected. Analysis suggests that attacks
1048 against RSA and DSA as a result of this defect would be very difficult to
1049 perform and are not believed likely. Attacks against DH are considered just
1050 feasible (although very difficult) because most of the work necessary to
1051 deduce information about a private key may be performed offline. The amount
1052 of resources required for such an attack would be very significant and
1053 likely only accessible to a limited number of attackers. An attacker would
1054 additionally need online access to an unpatched system using the target
1055 private key in a scenario with persistent DH parameters and a private
1056 key that is shared between multiple clients.
1058 This only affects processors that support the BMI1, BMI2 and ADX extensions
1059 like Intel Broadwell (5th generation) and later or AMD Ryzen.
1061 This issue was reported to OpenSSL by the OSS-Fuzz project.
1065 *) Malformed X.509 IPAddressFamily could cause OOB read
1067 If an X.509 certificate has a malformed IPAddressFamily extension,
1068 OpenSSL could do a one-byte buffer overread. The most likely result
1069 would be an erroneous display of the certificate in text format.
1071 This issue was reported to OpenSSL by the OSS-Fuzz project.
1075 Changes between 1.1.0e and 1.1.0f [25 May 2017]
1077 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
1078 platform rather than 'mingw'.
1081 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
1082 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
1083 which is the minimum version we support.
1086 Changes between 1.1.0d and 1.1.0e [16 Feb 2017]
1088 *) Encrypt-Then-Mac renegotiation crash
1090 During a renegotiation handshake if the Encrypt-Then-Mac extension is
1091 negotiated where it was not in the original handshake (or vice-versa) then
1092 this can cause OpenSSL to crash (dependant on ciphersuite). Both clients
1093 and servers are affected.
1095 This issue was reported to OpenSSL by Joe Orton (Red Hat).
1099 Changes between 1.1.0c and 1.1.0d [26 Jan 2017]
1101 *) Truncated packet could crash via OOB read
1103 If one side of an SSL/TLS path is running on a 32-bit host and a specific
1104 cipher is being used, then a truncated packet can cause that host to
1105 perform an out-of-bounds read, usually resulting in a crash.
1107 This issue was reported to OpenSSL by Robert Święcki of Google.
1111 *) Bad (EC)DHE parameters cause a client crash
1113 If a malicious server supplies bad parameters for a DHE or ECDHE key
1114 exchange then this can result in the client attempting to dereference a
1115 NULL pointer leading to a client crash. This could be exploited in a Denial
1118 This issue was reported to OpenSSL by Guido Vranken.
1122 *) BN_mod_exp may produce incorrect results on x86_64
1124 There is a carry propagating bug in the x86_64 Montgomery squaring
1125 procedure. No EC algorithms are affected. Analysis suggests that attacks
1126 against RSA and DSA as a result of this defect would be very difficult to
1127 perform and are not believed likely. Attacks against DH are considered just
1128 feasible (although very difficult) because most of the work necessary to
1129 deduce information about a private key may be performed offline. The amount
1130 of resources required for such an attack would be very significant and
1131 likely only accessible to a limited number of attackers. An attacker would
1132 additionally need online access to an unpatched system using the target
1133 private key in a scenario with persistent DH parameters and a private
1134 key that is shared between multiple clients. For example this can occur by
1135 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
1136 similar to CVE-2015-3193 but must be treated as a separate problem.
1138 This issue was reported to OpenSSL by the OSS-Fuzz project.
1142 Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
1144 *) ChaCha20/Poly1305 heap-buffer-overflow
1146 TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to
1147 a DoS attack by corrupting larger payloads. This can result in an OpenSSL
1148 crash. This issue is not considered to be exploitable beyond a DoS.
1150 This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
1154 *) CMS Null dereference
1156 Applications parsing invalid CMS structures can crash with a NULL pointer
1157 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
1158 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
1159 structure callback if an attempt is made to free certain invalid encodings.
1160 Only CHOICE structures using a callback which do not handle NULL value are
1163 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
1167 *) Montgomery multiplication may produce incorrect results
1169 There is a carry propagating bug in the Broadwell-specific Montgomery
1170 multiplication procedure that handles input lengths divisible by, but
1171 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
1172 and DH private keys are impossible. This is because the subroutine in
1173 question is not used in operations with the private key itself and an input
1174 of the attacker's direct choice. Otherwise the bug can manifest itself as
1175 transient authentication and key negotiation failures or reproducible
1176 erroneous outcome of public-key operations with specially crafted input.
1177 Among EC algorithms only Brainpool P-512 curves are affected and one
1178 presumably can attack ECDH key negotiation. Impact was not analyzed in
1179 detail, because pre-requisites for attack are considered unlikely. Namely
1180 multiple clients have to choose the curve in question and the server has to
1181 share the private key among them, neither of which is default behaviour.
1182 Even then only clients that chose the curve will be affected.
1184 This issue was publicly reported as transient failures and was not
1185 initially recognized as a security issue. Thanks to Richard Morgan for
1186 providing reproducible case.
1190 *) Removed automatic addition of RPATH in shared libraries and executables,
1191 as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
1194 Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
1196 *) Fix Use After Free for large message sizes
1198 The patch applied to address CVE-2016-6307 resulted in an issue where if a
1199 message larger than approx 16k is received then the underlying buffer to
1200 store the incoming message is reallocated and moved. Unfortunately a
1201 dangling pointer to the old location is left which results in an attempt to
1202 write to the previously freed location. This is likely to result in a
1203 crash, however it could potentially lead to execution of arbitrary code.
1205 This issue only affects OpenSSL 1.1.0a.
1207 This issue was reported to OpenSSL by Robert Święcki.
1211 Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
1213 *) OCSP Status Request extension unbounded memory growth
1215 A malicious client can send an excessively large OCSP Status Request
1216 extension. If that client continually requests renegotiation, sending a
1217 large OCSP Status Request extension each time, then there will be unbounded
1218 memory growth on the server. This will eventually lead to a Denial Of
1219 Service attack through memory exhaustion. Servers with a default
1220 configuration are vulnerable even if they do not support OCSP. Builds using
1221 the "no-ocsp" build time option are not affected.
1223 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1227 *) SSL_peek() hang on empty record
1229 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
1230 sends an empty record. This could be exploited by a malicious peer in a
1231 Denial Of Service attack.
1233 This issue was reported to OpenSSL by Alex Gaynor.
1237 *) Excessive allocation of memory in tls_get_message_header() and
1238 dtls1_preprocess_fragment()
1240 A (D)TLS message includes 3 bytes for its length in the header for the
1241 message. This would allow for messages up to 16Mb in length. Messages of
1242 this length are excessive and OpenSSL includes a check to ensure that a
1243 peer is sending reasonably sized messages in order to avoid too much memory
1244 being consumed to service a connection. A flaw in the logic of version
1245 1.1.0 means that memory for the message is allocated too early, prior to
1246 the excessive message length check. Due to way memory is allocated in
1247 OpenSSL this could mean an attacker could force up to 21Mb to be allocated
1248 to service a connection. This could lead to a Denial of Service through
1249 memory exhaustion. However, the excessive message length check still takes
1250 place, and this would cause the connection to immediately fail. Assuming
1251 that the application calls SSL_free() on the failed connection in a timely
1252 manner then the 21Mb of allocated memory will then be immediately freed
1253 again. Therefore the excessive memory allocation will be transitory in
1254 nature. This then means that there is only a security impact if:
1256 1) The application does not call SSL_free() in a timely manner in the event
1257 that the connection fails
1259 2) The application is working in a constrained environment where there is
1260 very little free memory
1262 3) The attacker initiates multiple connection attempts such that there are
1263 multiple connections in a state where memory has been allocated for the
1264 connection; SSL_free() has not yet been called; and there is insufficient
1265 memory to service the multiple requests.
1267 Except in the instance of (1) above any Denial Of Service is likely to be
1268 transitory because as soon as the connection fails the memory is
1269 subsequently freed again in the SSL_free() call. However there is an
1270 increased risk during this period of application crashes due to the lack of
1271 memory - which would then mean a more serious Denial of Service.
1273 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1274 (CVE-2016-6307 and CVE-2016-6308)
1277 *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
1278 had to be removed. Primary reason is that vendor assembler can't
1279 assemble our modules with -KPIC flag. As result it, assembly
1280 support, was not even available as option. But its lack means
1281 lack of side-channel resistant code, which is incompatible with
1282 security by todays standards. Fortunately gcc is readily available
1283 prepackaged option, which we firmly point at...
1286 Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
1288 *) Windows command-line tool supports UTF-8 opt-in option for arguments
1289 and console input. Setting OPENSSL_WIN32_UTF8 environment variable
1290 (to any value) allows Windows user to access PKCS#12 file generated
1291 with Windows CryptoAPI and protected with non-ASCII password, as well
1292 as files generated under UTF-8 locale on Linux also protected with
1296 *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites
1297 have been disabled by default and removed from DEFAULT, just like RC4.
1298 See the RC4 item below to re-enable both.
1301 *) The method for finding the storage location for the Windows RAND seed file
1302 has changed. First we check %RANDFILE%. If that is not set then we check
1303 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
1304 all else fails we fall back to C:\.
1307 *) The EVP_EncryptUpdate() function has had its return type changed from void
1308 to int. A return of 0 indicates and error while a return of 1 indicates
1312 *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
1313 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
1314 off the constant time implementation for RSA, DSA and DH have been made
1315 no-ops and deprecated.
1318 *) Windows RAND implementation was simplified to only get entropy by
1319 calling CryptGenRandom(). Various other RAND-related tickets
1321 [Joseph Wylie Yandle, Rich Salz]
1323 *) The stack and lhash API's were renamed to start with OPENSSL_SK_
1324 and OPENSSL_LH_, respectively. The old names are available
1325 with API compatibility. They new names are now completely documented.
1328 *) Unify TYPE_up_ref(obj) methods signature.
1329 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
1330 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
1331 int (instead of void) like all others TYPE_up_ref() methods.
1332 So now these methods also check the return value of CRYPTO_atomic_add(),
1333 and the validity of object reference counter.
1334 [fdasilvayy@gmail.com]
1336 *) With Windows Visual Studio builds, the .pdb files are installed
1337 alongside the installed libraries and executables. For a static
1338 library installation, ossl_static.pdb is the associate compiler
1339 generated .pdb file to be used when linking programs.
1342 *) Remove openssl.spec. Packaging files belong with the packagers.
1345 *) Automatic Darwin/OSX configuration has had a refresh, it will now
1346 recognise x86_64 architectures automatically. You can still decide
1347 to build for a different bitness with the environment variable
1348 KERNEL_BITS (can be 32 or 64), for example:
1350 KERNEL_BITS=32 ./config
1354 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
1355 256 bit AES and HMAC with SHA256.
1358 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only).
1361 *) Triple-DES ciphers have been moved from HIGH to MEDIUM.
1364 *) To enable users to have their own config files and build file templates,
1365 Configure looks in the directory indicated by the environment variable
1366 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
1367 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
1368 name and is used as is.
1371 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
1372 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
1373 X509_CERT_FILE_CTX was removed.
1376 *) "shared" builds are now the default. To create only static libraries use
1377 the "no-shared" Configure option.
1380 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
1381 All of these option have not worked for some while and are fundamental
1385 *) Make various cleanup routines no-ops and mark them as deprecated. Most
1386 global cleanup functions are no longer required because they are handled
1387 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
1388 Explicitly de-initing can cause problems (e.g. where a library that uses
1389 OpenSSL de-inits, but an application is still using it). The affected
1390 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
1391 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
1392 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
1393 COMP_zlib_cleanup().
1396 *) --strict-warnings no longer enables runtime debugging options
1397 such as REF_DEBUG. Instead, debug options are automatically
1398 enabled with '--debug' builds.
1399 [Andy Polyakov, Emilia Käsper]
1401 *) Made DH and DH_METHOD opaque. The structures for managing DH objects
1402 have been moved out of the public header files. New functions for managing
1403 these have been added.
1406 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA
1407 objects have been moved out of the public header files. New
1408 functions for managing these have been added.
1411 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
1412 have been moved out of the public header files. New functions for managing
1413 these have been added.
1416 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
1417 moved out of the public header files. New functions for managing these
1421 *) Removed no-rijndael as a config option. Rijndael is an old name for AES.
1424 *) Removed the mk1mf build scripts.
1427 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
1428 it is always safe to #include a header now.
1431 *) Removed the aged BC-32 config and all its supporting scripts
1434 *) Removed support for Ultrix, Netware, and OS/2.
1437 *) Add support for HKDF.
1438 [Alessandro Ghedini]
1440 *) Add support for blake2b and blake2s
1443 *) Added support for "pipelining". Ciphers that have the
1444 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
1445 encryptions/decryptions simultaneously. There are currently no built-in
1446 ciphers with this property but the expectation is that engines will be able
1447 to offer it to significantly improve throughput. Support has been extended
1448 into libssl so that multiple records for a single connection can be
1449 processed in one go (for >=TLS 1.1).
1452 *) Added the AFALG engine. This is an async capable engine which is able to
1453 offload work to the Linux kernel. In this initial version it only supports
1454 AES128-CBC. The kernel must be version 4.1.0 or greater.
1457 *) OpenSSL now uses a new threading API. It is no longer necessary to
1458 set locking callbacks to use OpenSSL in a multi-threaded environment. There
1459 are two supported threading models: pthreads and windows threads. It is
1460 also possible to configure OpenSSL at compile time for "no-threads". The
1461 old threading API should no longer be used. The functions have been
1462 replaced with "no-op" compatibility macros.
1463 [Alessandro Ghedini, Matt Caswell]
1465 *) Modify behavior of ALPN to invoke callback after SNI/servername
1466 callback, such that updates to the SSL_CTX affect ALPN.
1469 *) Add SSL_CIPHER queries for authentication and key-exchange.
1472 *) Changes to the DEFAULT cipherlist:
1473 - Prefer (EC)DHE handshakes over plain RSA.
1474 - Prefer AEAD ciphers over legacy ciphers.
1475 - Prefer ECDSA over RSA when both certificates are available.
1476 - Prefer TLSv1.2 ciphers/PRF.
1477 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
1481 *) Change the ECC default curve list to be this, in order: x25519,
1482 secp256r1, secp521r1, secp384r1.
1485 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
1486 disabled by default. They can be re-enabled using the
1487 enable-weak-ssl-ciphers option to Configure.
1490 *) If the server has ALPN configured, but supports no protocols that the
1491 client advertises, send a fatal "no_application_protocol" alert.
1492 This behaviour is SHALL in RFC 7301, though it isn't universally
1493 implemented by other servers.
1496 *) Add X25519 support.
1497 Add ASN.1 and EVP_PKEY methods for X25519. This includes support
1498 for public and private key encoding using the format documented in
1499 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
1500 key generation and key derivation.
1502 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
1506 *) Deprecate SRP_VBASE_get_by_user.
1507 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
1508 In order to fix an unavoidable memory leak (CVE-2016-0798),
1509 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
1510 seed, even if the seed is configured.
1512 Users should use SRP_VBASE_get1_by_user instead. Note that in
1513 SRP_VBASE_get1_by_user, caller must free the returned value. Note
1514 also that even though configuring the SRP seed attempts to hide
1515 invalid usernames by continuing the handshake with fake
1516 credentials, this behaviour is not constant time and no strong
1517 guarantees are made that the handshake is indistinguishable from
1518 that of a valid user.
1521 *) Configuration change; it's now possible to build dynamic engines
1522 without having to build shared libraries and vice versa. This
1523 only applies to the engines in engines/, those in crypto/engine/
1524 will always be built into libcrypto (i.e. "static").
1526 Building dynamic engines is enabled by default; to disable, use
1527 the configuration option "disable-dynamic-engine".
1529 The only requirements for building dynamic engines are the
1530 presence of the DSO module and building with position independent
1531 code, so they will also automatically be disabled if configuring
1532 with "disable-dso" or "disable-pic".
1534 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
1535 are also taken away from openssl/opensslconf.h, as they are
1539 *) Configuration change; if there is a known flag to compile
1540 position independent code, it will always be applied on the
1541 libcrypto and libssl object files, and never on the application
1542 object files. This means other libraries that use routines from
1543 libcrypto / libssl can be made into shared libraries regardless
1544 of how OpenSSL was configured.
1546 If this isn't desirable, the configuration options "disable-pic"
1547 or "no-pic" can be used to disable the use of PIC. This will
1548 also disable building shared libraries and dynamic engines.
1551 *) Removed JPAKE code. It was experimental and has no wide use.
1554 *) The INSTALL_PREFIX Makefile variable has been renamed to
1555 DESTDIR. That makes for less confusion on what this variable
1556 is for. Also, the configuration option --install_prefix is
1560 *) Heartbeat for TLS has been removed and is disabled by default
1561 for DTLS; configure with enable-heartbeats. Code that uses the
1562 old #define's might need to be updated.
1563 [Emilia Käsper, Rich Salz]
1565 *) Rename REF_CHECK to REF_DEBUG.
1568 *) New "unified" build system
1570 The "unified" build system is aimed to be a common system for all
1571 platforms we support. With it comes new support for VMS.
1573 This system builds supports building in a different directory tree
1574 than the source tree. It produces one Makefile (for unix family
1575 or lookalikes), or one descrip.mms (for VMS).
1577 The source of information to make the Makefile / descrip.mms is
1578 small files called 'build.info', holding the necessary
1579 information for each directory with source to compile, and a
1580 template in Configurations, like unix-Makefile.tmpl or
1583 With this change, the library names were also renamed on Windows
1584 and on VMS. They now have names that are closer to the standard
1585 on Unix, and include the major version number, and in certain
1586 cases, the architecture they are built for. See "Notes on shared
1587 libraries" in INSTALL.
1589 We rely heavily on the perl module Text::Template.
1592 *) Added support for auto-initialisation and de-initialisation of the library.
1593 OpenSSL no longer requires explicit init or deinit routines to be called,
1594 except in certain circumstances. See the OPENSSL_init_crypto() and
1595 OPENSSL_init_ssl() man pages for further information.
1598 *) The arguments to the DTLSv1_listen function have changed. Specifically the
1599 "peer" argument is now expected to be a BIO_ADDR object.
1601 *) Rewrite of BIO networking library. The BIO library lacked consistent
1602 support of IPv6, and adding it required some more extensive
1603 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
1604 which hold all types of addresses and chains of address information.
1605 It also introduces a new API, with functions like BIO_socket,
1606 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
1607 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
1608 have been adapted accordingly.
1611 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
1615 *) CRIME protection: disable compression by default, even if OpenSSL is
1616 compiled with zlib enabled. Applications can still enable compression
1617 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
1618 using the SSL_CONF library to configure compression.
1621 *) The signature of the session callback configured with
1622 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
1623 was explicitly marked as 'const unsigned char*' instead of
1627 *) Always DPURIFY. Remove the use of uninitialized memory in the
1628 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
1631 *) Removed many obsolete configuration items, including
1632 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
1633 MD2_CHAR, MD2_INT, MD2_LONG
1635 IDEA_SHORT, IDEA_LONG
1636 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
1637 [Rich Salz, with advice from Andy Polyakov]
1639 *) Many BN internals have been moved to an internal header file.
1640 [Rich Salz with help from Andy Polyakov]
1642 *) Configuration and writing out the results from it has changed.
1643 Files such as Makefile include/openssl/opensslconf.h and are now
1644 produced through general templates, such as Makefile.in and
1645 crypto/opensslconf.h.in and some help from the perl module
1648 Also, the center of configuration information is no longer
1649 Makefile. Instead, Configure produces a perl module in
1650 configdata.pm which holds most of the config data (in the hash
1651 table %config), the target data that comes from the target
1652 configuration in one of the Configurations/*.conf files (in
1656 *) To clarify their intended purposes, the Configure options
1657 --prefix and --openssldir change their semantics, and become more
1658 straightforward and less interdependent.
1660 --prefix shall be used exclusively to give the location INSTALLTOP
1661 where programs, scripts, libraries, include files and manuals are
1662 going to be installed. The default is now /usr/local.
1664 --openssldir shall be used exclusively to give the default
1665 location OPENSSLDIR where certificates, private keys, CRLs are
1666 managed. This is also where the default openssl.cnf gets
1668 If the directory given with this option is a relative path, the
1669 values of both the --prefix value and the --openssldir value will
1670 be combined to become OPENSSLDIR.
1671 The default for --openssldir is INSTALLTOP/ssl.
1673 Anyone who uses --openssldir to specify where OpenSSL is to be
1674 installed MUST change to use --prefix instead.
1677 *) The GOST engine was out of date and therefore it has been removed. An up
1678 to date GOST engine is now being maintained in an external repository.
1679 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
1680 support for GOST ciphersuites (these are only activated if a GOST engine
1684 *) EGD is no longer supported by default; use enable-egd when
1686 [Ben Kaduk and Rich Salz]
1688 *) The distribution now has Makefile.in files, which are used to
1689 create Makefile's when Configure is run. *Configure must be run
1690 before trying to build now.*
1693 *) The return value for SSL_CIPHER_description() for error conditions
1697 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication.
1699 Obtaining and performing DNSSEC validation of TLSA records is
1700 the application's responsibility. The application provides
1701 the TLSA records of its choice to OpenSSL, and these are then
1702 used to authenticate the peer.
1704 The TLSA records need not even come from DNS. They can, for
1705 example, be used to implement local end-entity certificate or
1706 trust-anchor "pinning", where the "pin" data takes the form
1707 of TLSA records, which can augment or replace verification
1708 based on the usual WebPKI public certification authorities.
1711 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
1712 continues to support deprecated interfaces in default builds.
1713 However, applications are strongly advised to compile their
1714 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
1715 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
1716 or the 1.1.0 releases.
1718 In environments in which all applications have been ported to
1719 not use any deprecated interfaces OpenSSL's Configure script
1720 should be used with the --api=1.1.0 option to entirely remove
1721 support for the deprecated features from the library and
1722 unconditionally disable them in the installed headers.
1723 Essentially the same effect can be achieved with the "no-deprecated"
1724 argument to Configure, except that this will always restrict
1725 the build to just the latest API, rather than a fixed API
1728 As applications are ported to future revisions of the API,
1729 they should update their compile-time OPENSSL_API_COMPAT define
1730 accordingly, but in most cases should be able to continue to
1731 compile with later releases.
1733 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
1734 0x10000000L and 0x00908000L, respectively. However those
1735 versions did not support the OPENSSL_API_COMPAT feature, and
1736 so applications are not typically tested for explicit support
1737 of just the undeprecated features of either release.
1740 *) Add support for setting the minimum and maximum supported protocol.
1741 It can bet set via the SSL_set_min_proto_version() and
1742 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
1743 MaxProtocol. It's recommended to use the new APIs to disable
1744 protocols instead of disabling individual protocols using
1745 SSL_set_options() or SSL_CONF's Protocol. This change also
1746 removes support for disabling TLS 1.2 in the OpenSSL TLS
1747 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
1750 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
1753 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
1754 and integrates ECDSA and ECDH functionality into EC. Implementations can
1755 now redirect key generation and no longer need to convert to or from
1758 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
1759 include the ec.h header file instead.
1762 *) Remove support for all 40 and 56 bit ciphers. This includes all the export
1763 ciphers who are no longer supported and drops support the ephemeral RSA key
1764 exchange. The LOW ciphers currently doesn't have any ciphers in it.
1767 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
1768 opaque. For HMAC_CTX, the following constructors and destructors
1771 HMAC_CTX *HMAC_CTX_new(void);
1772 void HMAC_CTX_free(HMAC_CTX *ctx);
1774 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
1775 destroy such methods has been added. See EVP_MD_meth_new(3) and
1776 EVP_CIPHER_meth_new(3) for documentation.
1779 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
1780 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
1781 EVP_MD_CTX_reset() should be called instead to reinitialise
1782 an already created structure.
1783 2) For consistency with the majority of our object creators and
1784 destructors, EVP_MD_CTX_(create|destroy) were renamed to
1785 EVP_MD_CTX_(new|free). The old names are retained as macros
1786 for deprecated builds.
1789 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
1790 cryptographic operations to be performed asynchronously as long as an
1791 asynchronous capable engine is used. See the ASYNC_start_job() man page for
1792 further details. Libssl has also had this capability integrated with the
1793 introduction of the new mode SSL_MODE_ASYNC and associated error
1794 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
1795 pages. This work was developed in partnership with Intel Corp.
1798 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
1799 always enabled now. If you want to disable the support you should
1800 exclude it using the list of supported ciphers. This also means that the
1801 "-no_ecdhe" option has been removed from s_server.
1804 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
1805 SSL_{CTX_}set1_curves() which can set a list.
1808 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
1809 curve you want to support using SSL_{CTX_}set1_curves().
1812 *) State machine rewrite. The state machine code has been significantly
1813 refactored in order to remove much duplication of code and solve issues
1814 with the old code (see ssl/statem/README for further details). This change
1815 does have some associated API changes. Notably the SSL_state() function
1816 has been removed and replaced by SSL_get_state which now returns an
1817 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
1818 altogether. The previous handshake states defined in ssl.h and ssl3.h have
1822 *) All instances of the string "ssleay" in the public API were replaced
1823 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
1824 Some error codes related to internal RSA_eay API's were renamed.
1827 *) The demo files in crypto/threads were moved to demo/threads.
1830 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
1832 [Matt Caswell, Rich Salz]
1834 *) New ASN.1 embed macro.
1836 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
1837 structure is not allocated: it is part of the parent. That is instead of
1845 This reduces memory fragmentation and make it impossible to accidentally
1846 set a mandatory field to NULL.
1848 This currently only works for some fields specifically a SEQUENCE, CHOICE,
1849 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
1850 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
1854 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
1857 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
1858 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
1859 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
1860 DES and RC4 ciphersuites.
1863 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
1864 This changes the decoding behaviour for some invalid messages,
1865 though the change is mostly in the more lenient direction, and
1866 legacy behaviour is preserved as much as possible.
1869 *) Fix no-stdio build.
1870 [ David Woodhouse <David.Woodhouse@intel.com> and also
1871 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
1873 *) New testing framework
1874 The testing framework has been largely rewritten and is now using
1875 perl and the perl modules Test::Harness and an extended variant of
1876 Test::More called OpenSSL::Test to do its work. All test scripts in
1877 test/ have been rewritten into test recipes, and all direct calls to
1878 executables in test/Makefile have become individual recipes using the
1879 simplified testing OpenSSL::Test::Simple.
1881 For documentation on our testing modules, do:
1883 perldoc test/testlib/OpenSSL/Test/Simple.pm
1884 perldoc test/testlib/OpenSSL/Test.pm
1888 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
1889 are used; the latter aborts on memory leaks (usually checked on exit).
1890 Some undocumented "set malloc, etc., hooks" functions were removed
1891 and others were changed. All are now documented.
1894 *) In DSA_generate_parameters_ex, if the provided seed is too short,
1896 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
1898 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
1899 from RFC4279, RFC4785, RFC5487, RFC5489.
1901 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
1902 original RSA_PSK patch.
1905 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
1906 era flag was never set throughout the codebase (only read). Also removed
1907 SSL3_FLAGS_POP_BUFFER which was only used if
1908 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
1911 *) Changed the default name options in the "ca", "crl", "req" and "x509"
1912 to be "oneline" instead of "compat".
1915 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
1916 not aware of clients that still exhibit this bug, and the workaround
1917 hasn't been working properly for a while.
1920 *) The return type of BIO_number_read() and BIO_number_written() as well as
1921 the corresponding num_read and num_write members in the BIO structure has
1922 changed from unsigned long to uint64_t. On platforms where an unsigned
1923 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
1927 *) Given the pervasive nature of TLS extensions it is inadvisable to run
1928 OpenSSL without support for them. It also means that maintaining
1929 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
1930 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
1933 *) Removed support for the two export grade static DH ciphersuites
1934 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
1935 were newly added (along with a number of other static DH ciphersuites) to
1936 1.0.2. However the two export ones have *never* worked since they were
1937 introduced. It seems strange in any case to be adding new export
1938 ciphersuites, and given "logjam" it also does not seem correct to fix them.
1941 *) Version negotiation has been rewritten. In particular SSLv23_method(),
1942 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
1943 and turned into macros which simply call the new preferred function names
1944 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
1945 should use the new names instead. Also as part of this change the ssl23.h
1946 header file has been removed.
1949 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
1950 code and the associated standard is no longer considered fit-for-purpose.
1953 *) RT2547 was closed. When generating a private key, try to make the
1954 output file readable only by the owner. This behavior change might
1955 be noticeable when interacting with other software.
1957 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
1961 *) Added HTTP GET support to the ocsp command.
1964 *) Changed default digest for the dgst and enc commands from MD5 to
1968 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
1971 *) Added support for TLS extended master secret from
1972 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
1973 initial patch which was a great help during development.
1976 *) All libssl internal structures have been removed from the public header
1977 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
1978 now redundant). Users should not attempt to access internal structures
1979 directly. Instead they should use the provided API functions.
1982 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
1983 Access to deprecated functions can be re-enabled by running config with
1984 "enable-deprecated". In addition applications wishing to use deprecated
1985 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
1986 will, by default, disable some transitive includes that previously existed
1987 in the header files (e.g. ec.h will no longer, by default, include bn.h)
1990 *) Added support for OCB mode. OpenSSL has been granted a patent license
1991 compatible with the OpenSSL license for use of OCB. Details are available
1992 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
1993 for OCB can be removed by calling config with no-ocb.
1996 *) SSLv2 support has been removed. It still supports receiving a SSLv2
1997 compatible client hello.
2000 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
2001 done while fixing the error code for the key-too-small case.
2002 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
2004 *) CA.sh has been removed; use CA.pl instead.
2007 *) Removed old DES API.
2010 *) Remove various unsupported platforms:
2016 Sinix/ReliantUNIX RM400
2021 16-bit platforms such as WIN16
2024 *) Clean up OPENSSL_NO_xxx #define's
2025 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
2026 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
2027 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
2028 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
2029 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
2030 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
2031 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
2032 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
2033 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
2034 Remove MS_STATIC; it's a relic from platforms <32 bits.
2037 *) Cleaned up dead code
2038 Remove all but one '#ifdef undef' which is to be looked at.
2041 *) Clean up calling of xxx_free routines.
2042 Just like free(), fix most of the xxx_free routines to accept
2043 NULL. Remove the non-null checks from callers. Save much code.
2046 *) Add secure heap for storage of private keys (when possible).
2047 Add BIO_s_secmem(), CBIGNUM, etc.
2048 Contributed by Akamai Technologies under our Corporate CLA.
2051 *) Experimental support for a new, fast, unbiased prime candidate generator,
2052 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
2053 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
2055 *) New output format NSS in the sess_id command line tool. This allows
2056 exporting the session id and the master key in NSS keylog format.
2057 [Martin Kaiser <martin@kaiser.cx>]
2059 *) Harmonize version and its documentation. -f flag is used to display
2061 [mancha <mancha1@zoho.com>]
2063 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
2064 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
2065 [mancha <mancha1@zoho.com>]
2067 *) Fix some double frees. These are not thought to be exploitable.
2068 [mancha <mancha1@zoho.com>]
2070 *) A missing bounds check in the handling of the TLS heartbeat extension
2071 can be used to reveal up to 64k of memory to a connected client or
2074 Thanks for Neel Mehta of Google Security for discovering this bug and to
2075 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
2076 preparing the fix (CVE-2014-0160)
2077 [Adam Langley, Bodo Moeller]
2079 *) Fix for the attack described in the paper "Recovering OpenSSL
2080 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
2081 by Yuval Yarom and Naomi Benger. Details can be obtained from:
2082 http://eprint.iacr.org/2014/140
2084 Thanks to Yuval Yarom and Naomi Benger for discovering this
2085 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
2086 [Yuval Yarom and Naomi Benger]
2088 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
2089 this fixes a limitation in previous versions of OpenSSL.
2092 *) Experimental encrypt-then-mac support.
2094 Experimental support for encrypt then mac from
2095 draft-gutmann-tls-encrypt-then-mac-02.txt
2097 To enable it set the appropriate extension number (0x42 for the test
2098 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
2100 For non-compliant peers (i.e. just about everything) this should have no
2103 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
2107 *) Add EVP support for key wrapping algorithms, to avoid problems with
2108 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
2109 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
2110 algorithms and include tests cases.
2113 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
2117 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
2118 MGF1 digest and OAEP label.
2121 *) Make openssl verify return errors.
2122 [Chris Palmer <palmer@google.com> and Ben Laurie]
2124 *) New function ASN1_TIME_diff to calculate the difference between two
2125 ASN1_TIME structures or one structure and the current time.
2128 *) Update fips_test_suite to support multiple command line options. New
2129 test to induce all self test errors in sequence and check expected
2133 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
2134 sign or verify all in one operation.
2137 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
2138 test programs and fips_test_suite. Includes functionality to parse
2139 the minimal script output of fipsalgest.pl directly.
2142 *) Add authorisation parameter to FIPS_module_mode_set().
2145 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
2148 *) Use separate DRBG fields for internal and external flags. New function
2149 FIPS_drbg_health_check() to perform on demand health checking. Add
2150 generation tests to fips_test_suite with reduced health check interval to
2151 demonstrate periodic health checking. Add "nodh" option to
2152 fips_test_suite to skip very slow DH test.
2155 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
2159 *) More extensive health check for DRBG checking many more failure modes.
2160 New function FIPS_selftest_drbg_all() to handle every possible DRBG
2161 combination: call this in fips_test_suite.
2164 *) Add support for canonical generation of DSA parameter 'g'. See
2167 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
2168 POST to handle HMAC cases.
2171 *) Add functions FIPS_module_version() and FIPS_module_version_text()
2172 to return numerical and string versions of the FIPS module number.
2175 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
2176 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
2177 outside the validated module in the FIPS capable OpenSSL.
2180 *) Minor change to DRBG entropy callback semantics. In some cases
2181 there is no multiple of the block length between min_len and
2182 max_len. Allow the callback to return more than max_len bytes
2183 of entropy but discard any extra: it is the callback's responsibility
2184 to ensure that the extra data discarded does not impact the
2185 requested amount of entropy.
2188 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
2189 information in FIPS186-3, SP800-57 and SP800-131A.
2192 *) CCM support via EVP. Interface is very similar to GCM case except we
2193 must supply all data in one chunk (i.e. no update, final) and the
2194 message length must be supplied if AAD is used. Add algorithm test
2198 *) Initial version of POST overhaul. Add POST callback to allow the status
2199 of POST to be monitored and/or failures induced. Modify fips_test_suite
2200 to use callback. Always run all selftests even if one fails.
2203 *) XTS support including algorithm test driver in the fips_gcmtest program.
2204 Note: this does increase the maximum key length from 32 to 64 bytes but
2205 there should be no binary compatibility issues as existing applications
2206 will never use XTS mode.
2209 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
2210 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
2211 performs algorithm blocking for unapproved PRNG types. Also do not
2212 set PRNG type in FIPS_mode_set(): leave this to the application.
2213 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
2214 the standard OpenSSL PRNG: set additional data to a date time vector.
2217 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
2218 This shouldn't present any incompatibility problems because applications
2219 shouldn't be using these directly and any that are will need to rethink
2220 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
2223 *) Extensive self tests and health checking required by SP800-90 DRBG.
2224 Remove strength parameter from FIPS_drbg_instantiate and always
2225 instantiate at maximum supported strength.
2228 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
2231 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
2234 *) New function DH_compute_key_padded() to compute a DH key and pad with
2235 leading zeroes if needed: this complies with SP800-56A et al.
2238 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
2239 anything, incomplete, subject to change and largely untested at present.
2242 *) Modify fipscanisteronly build option to only build the necessary object
2243 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
2246 *) Add experimental option FIPSSYMS to give all symbols in
2247 fipscanister.o and FIPS or fips prefix. This will avoid
2248 conflicts with future versions of OpenSSL. Add perl script
2249 util/fipsas.pl to preprocess assembly language source files
2250 and rename any affected symbols.
2253 *) Add selftest checks and algorithm block of non-fips algorithms in
2254 FIPS mode. Remove DES2 from selftests.
2257 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
2258 return internal method without any ENGINE dependencies. Add new
2259 tiny fips sign and verify functions.
2262 *) New build option no-ec2m to disable characteristic 2 code.
2265 *) New build option "fipscanisteronly". This only builds fipscanister.o
2266 and (currently) associated fips utilities. Uses the file Makefile.fips
2267 instead of Makefile.org as the prototype.
2270 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
2271 Update fips_gcmtest to use IV generator.
2274 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
2275 setting output buffer to NULL. The *Final function must be
2276 called although it will not retrieve any additional data. The tag
2277 can be set or retrieved with a ctrl. The IV length is by default 12
2278 bytes (96 bits) but can be set to an alternative value. If the IV
2279 length exceeds the maximum IV length (currently 16 bytes) it cannot be
2283 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
2284 underlying do_cipher function handles all cipher semantics itself
2285 including padding and finalisation. This is useful if (for example)
2286 an ENGINE cipher handles block padding itself. The behaviour of
2287 do_cipher is subtly changed if this flag is set: the return value
2288 is the number of characters written to the output buffer (zero is
2289 no longer an error code) or a negative error code. Also if the
2290 input buffer is NULL and length 0 finalisation should be performed.
2293 *) If a candidate issuer certificate is already part of the constructed
2294 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
2297 *) Improve forward-security support: add functions
2299 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
2300 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
2302 for use by SSL/TLS servers; the callback function will be called whenever a
2303 new session is created, and gets to decide whether the session may be
2304 cached to make it resumable (return 0) or not (return 1). (As by the
2305 SSL/TLS protocol specifications, the session_id sent by the server will be
2306 empty to indicate that the session is not resumable; also, the server will
2307 not generate RFC 4507 (RFC 5077) session tickets.)
2309 A simple reasonable callback implementation is to return is_forward_secure.
2310 This parameter will be set to 1 or 0 depending on the ciphersuite selected
2311 by the SSL/TLS server library, indicating whether it can provide forward
2313 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2315 *) New -verify_name option in command line utilities to set verification
2319 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
2320 Add CMAC pkey methods.
2323 *) Experimental renegotiation in s_server -www mode. If the client
2324 browses /reneg connection is renegotiated. If /renegcert it is
2325 renegotiated requesting a certificate.
2328 *) Add an "external" session cache for debugging purposes to s_server. This
2329 should help trace issues which normally are only apparent in deployed
2330 multi-process servers.
2333 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
2334 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
2335 BIO_set_cipher() and some obscure PEM functions were changed so they
2336 can now return an error. The RAND changes required a change to the
2337 RAND_METHOD structure.
2340 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
2341 a gcc attribute to warn if the result of a function is ignored. This
2342 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
2343 whose return value is often ignored.
2346 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client.
2347 These allow SCTs (signed certificate timestamps) to be requested and
2348 validated when establishing a connection.
2349 [Rob Percival <robpercival@google.com>]
2351 Changes between 1.0.2g and 1.0.2h [3 May 2016]
2353 *) Prevent padding oracle in AES-NI CBC MAC check
2355 A MITM attacker can use a padding oracle attack to decrypt traffic
2356 when the connection uses an AES CBC cipher and the server support
2359 This issue was introduced as part of the fix for Lucky 13 padding
2360 attack (CVE-2013-0169). The padding check was rewritten to be in
2361 constant time by making sure that always the same bytes are read and
2362 compared against either the MAC or padding bytes. But it no longer
2363 checked that there was enough data to have both the MAC and padding
2366 This issue was reported by Juraj Somorovsky using TLS-Attacker.
2370 *) Fix EVP_EncodeUpdate overflow
2372 An overflow can occur in the EVP_EncodeUpdate() function which is used for
2373 Base64 encoding of binary data. If an attacker is able to supply very large
2374 amounts of input data then a length check can overflow resulting in a heap
2377 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
2378 the PEM_write_bio* family of functions. These are mainly used within the
2379 OpenSSL command line applications, so any application which processes data
2380 from an untrusted source and outputs it as a PEM file should be considered
2381 vulnerable to this issue. User applications that call these APIs directly
2382 with large amounts of untrusted data may also be vulnerable.
2384 This issue was reported by Guido Vranken.
2388 *) Fix EVP_EncryptUpdate overflow
2390 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
2391 is able to supply very large amounts of input data after a previous call to
2392 EVP_EncryptUpdate() with a partial block then a length check can overflow
2393 resulting in a heap corruption. Following an analysis of all OpenSSL
2394 internal usage of the EVP_EncryptUpdate() function all usage is one of two
2395 forms. The first form is where the EVP_EncryptUpdate() call is known to be
2396 the first called function after an EVP_EncryptInit(), and therefore that
2397 specific call must be safe. The second form is where the length passed to
2398 EVP_EncryptUpdate() can be seen from the code to be some small value and
2399 therefore there is no possibility of an overflow. Since all instances are
2400 one of these two forms, it is believed that there can be no overflows in
2401 internal code due to this problem. It should be noted that
2402 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
2403 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
2404 of these calls have also been analysed too and it is believed there are no
2405 instances in internal usage where an overflow could occur.
2407 This issue was reported by Guido Vranken.
2411 *) Prevent ASN.1 BIO excessive memory allocation
2413 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
2414 a short invalid encoding can cause allocation of large amounts of memory
2415 potentially consuming excessive resources or exhausting memory.
2417 Any application parsing untrusted data through d2i BIO functions is
2418 affected. The memory based functions such as d2i_X509() are *not* affected.
2419 Since the memory based functions are used by the TLS library, TLS
2420 applications are not affected.
2422 This issue was reported by Brian Carpenter.
2428 ASN1 Strings that are over 1024 bytes can cause an overread in applications
2429 using the X509_NAME_oneline() function on EBCDIC systems. This could result
2430 in arbitrary stack data being returned in the buffer.
2432 This issue was reported by Guido Vranken.
2436 *) Modify behavior of ALPN to invoke callback after SNI/servername
2437 callback, such that updates to the SSL_CTX affect ALPN.
2440 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
2444 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
2445 methods are enabled and ssl2 is disabled the methods return NULL.
2448 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
2450 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
2451 Builds that are not configured with "enable-weak-ssl-ciphers" will not
2452 provide any "EXPORT" or "LOW" strength ciphers.
2455 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
2456 is by default disabled at build-time. Builds that are not configured with
2457 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
2458 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
2459 will need to explicitly call either of:
2461 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
2463 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
2465 as appropriate. Even if either of those is used, or the application
2466 explicitly uses the version-specific SSLv2_method() or its client and
2467 server variants, SSLv2 ciphers vulnerable to exhaustive search key
2468 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
2469 ciphers, and SSLv2 56-bit DES are no longer available.
2473 *) Fix a double-free in DSA code
2475 A double free bug was discovered when OpenSSL parses malformed DSA private
2476 keys and could lead to a DoS attack or memory corruption for applications
2477 that receive DSA private keys from untrusted sources. This scenario is
2480 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
2485 *) Disable SRP fake user seed to address a server memory leak.
2487 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
2489 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
2490 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
2491 was changed to ignore the "fake user" SRP seed, even if the seed
2494 Users should use SRP_VBASE_get1_by_user instead. Note that in
2495 SRP_VBASE_get1_by_user, caller must free the returned value. Note
2496 also that even though configuring the SRP seed attempts to hide
2497 invalid usernames by continuing the handshake with fake
2498 credentials, this behaviour is not constant time and no strong
2499 guarantees are made that the handshake is indistinguishable from
2500 that of a valid user.
2504 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
2506 In the BN_hex2bn function the number of hex digits is calculated using an
2507 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
2508 large values of |i| this can result in |bn_expand| not allocating any
2509 memory because |i * 4| is negative. This can leave the internal BIGNUM data
2510 field as NULL leading to a subsequent NULL ptr deref. For very large values
2511 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
2512 In this case memory is allocated to the internal BIGNUM data field, but it
2513 is insufficiently sized leading to heap corruption. A similar issue exists
2514 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
2515 is ever called by user applications with very large untrusted hex/dec data.
2516 This is anticipated to be a rare occurrence.
2518 All OpenSSL internal usage of these functions use data that is not expected
2519 to be untrusted, e.g. config file data or application command line
2520 arguments. If user developed applications generate config file data based
2521 on untrusted data then it is possible that this could also lead to security
2522 consequences. This is also anticipated to be rare.
2524 This issue was reported to OpenSSL by Guido Vranken.
2528 *) Fix memory issues in BIO_*printf functions
2530 The internal |fmtstr| function used in processing a "%s" format string in
2531 the BIO_*printf functions could overflow while calculating the length of a
2532 string and cause an OOB read when printing very long strings.
2534 Additionally the internal |doapr_outch| function can attempt to write to an
2535 OOB memory location (at an offset from the NULL pointer) in the event of a
2536 memory allocation failure. In 1.0.2 and below this could be caused where
2537 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
2538 could be in processing a very long "%s" format string. Memory leaks can
2541 The first issue may mask the second issue dependent on compiler behaviour.
2542 These problems could enable attacks where large amounts of untrusted data
2543 is passed to the BIO_*printf functions. If applications use these functions
2544 in this way then they could be vulnerable. OpenSSL itself uses these
2545 functions when printing out human-readable dumps of ASN.1 data. Therefore
2546 applications that print this data could be vulnerable if the data is from
2547 untrusted sources. OpenSSL command line applications could also be
2548 vulnerable where they print out ASN.1 data, or if untrusted data is passed
2549 as command line arguments.
2551 Libssl is not considered directly vulnerable. Additionally certificates etc
2552 received via remote connections via libssl are also unlikely to be able to
2553 trigger these issues because of message size limits enforced within libssl.
2555 This issue was reported to OpenSSL Guido Vranken.
2559 *) Side channel attack on modular exponentiation
2561 A side-channel attack was found which makes use of cache-bank conflicts on
2562 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
2563 of RSA keys. The ability to exploit this issue is limited as it relies on
2564 an attacker who has control of code in a thread running on the same
2565 hyper-threaded core as the victim thread which is performing decryptions.
2567 This issue was reported to OpenSSL by Yuval Yarom, The University of
2568 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
2569 Nadia Heninger, University of Pennsylvania with more information at
2570 http://cachebleed.info.
2574 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
2575 if no keysize is specified with default_bits. This fixes an
2576 omission in an earlier change that changed all RSA/DSA key generation
2577 apps to use 2048 bits by default.
2580 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
2581 *) DH small subgroups
2583 Historically OpenSSL only ever generated DH parameters based on "safe"
2584 primes. More recently (in version 1.0.2) support was provided for
2585 generating X9.42 style parameter files such as those required for RFC 5114
2586 support. The primes used in such files may not be "safe". Where an
2587 application is using DH configured with parameters based on primes that are
2588 not "safe" then an attacker could use this fact to find a peer's private
2589 DH exponent. This attack requires that the attacker complete multiple
2590 handshakes in which the peer uses the same private DH exponent. For example
2591 this could be used to discover a TLS server's private DH exponent if it's
2592 reusing the private DH exponent or it's using a static DH ciphersuite.
2594 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
2595 TLS. It is not on by default. If the option is not set then the server
2596 reuses the same private DH exponent for the life of the server process and
2597 would be vulnerable to this attack. It is believed that many popular
2598 applications do set this option and would therefore not be at risk.
2600 The fix for this issue adds an additional check where a "q" parameter is
2601 available (as is the case in X9.42 based parameters). This detects the
2602 only known attack, and is the only possible defense for static DH
2603 ciphersuites. This could have some performance impact.
2605 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
2606 default and cannot be disabled. This could have some performance impact.
2608 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
2612 *) SSLv2 doesn't block disabled ciphers
2614 A malicious client can negotiate SSLv2 ciphers that have been disabled on
2615 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
2616 been disabled, provided that the SSLv2 protocol was not also disabled via
2619 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
2620 and Sebastian Schinzel.
2624 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
2626 *) BN_mod_exp may produce incorrect results on x86_64
2628 There is a carry propagating bug in the x86_64 Montgomery squaring
2629 procedure. No EC algorithms are affected. Analysis suggests that attacks
2630 against RSA and DSA as a result of this defect would be very difficult to
2631 perform and are not believed likely. Attacks against DH are considered just
2632 feasible (although very difficult) because most of the work necessary to
2633 deduce information about a private key may be performed offline. The amount
2634 of resources required for such an attack would be very significant and
2635 likely only accessible to a limited number of attackers. An attacker would
2636 additionally need online access to an unpatched system using the target
2637 private key in a scenario with persistent DH parameters and a private
2638 key that is shared between multiple clients. For example this can occur by
2639 default in OpenSSL DHE based SSL/TLS ciphersuites.
2641 This issue was reported to OpenSSL by Hanno Böck.
2645 *) Certificate verify crash with missing PSS parameter
2647 The signature verification routines will crash with a NULL pointer
2648 dereference if presented with an ASN.1 signature using the RSA PSS
2649 algorithm and absent mask generation function parameter. Since these
2650 routines are used to verify certificate signature algorithms this can be
2651 used to crash any certificate verification operation and exploited in a
2652 DoS attack. Any application which performs certificate verification is
2653 vulnerable including OpenSSL clients and servers which enable client
2656 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
2660 *) X509_ATTRIBUTE memory leak
2662 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
2663 memory. This structure is used by the PKCS#7 and CMS routines so any
2664 application which reads PKCS#7 or CMS data from untrusted sources is
2665 affected. SSL/TLS is not affected.
2667 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
2672 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
2673 This changes the decoding behaviour for some invalid messages,
2674 though the change is mostly in the more lenient direction, and
2675 legacy behaviour is preserved as much as possible.
2678 *) In DSA_generate_parameters_ex, if the provided seed is too short,
2680 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
2682 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
2684 *) Alternate chains certificate forgery
2686 During certificate verification, OpenSSL will attempt to find an
2687 alternative certificate chain if the first attempt to build such a chain
2688 fails. An error in the implementation of this logic can mean that an
2689 attacker could cause certain checks on untrusted certificates to be
2690 bypassed, such as the CA flag, enabling them to use a valid leaf
2691 certificate to act as a CA and "issue" an invalid certificate.
2693 This issue was reported to OpenSSL by Adam Langley/David Benjamin
2697 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
2699 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
2700 incompatibility in the handling of HMAC. The previous ABI has now been
2704 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
2706 *) Malformed ECParameters causes infinite loop
2708 When processing an ECParameters structure OpenSSL enters an infinite loop
2709 if the curve specified is over a specially malformed binary polynomial
2712 This can be used to perform denial of service against any
2713 system which processes public keys, certificate requests or
2714 certificates. This includes TLS clients and TLS servers with
2715 client authentication enabled.
2717 This issue was reported to OpenSSL by Joseph Barr-Pixton.
2721 *) Exploitable out-of-bounds read in X509_cmp_time
2723 X509_cmp_time does not properly check the length of the ASN1_TIME
2724 string and can read a few bytes out of bounds. In addition,
2725 X509_cmp_time accepts an arbitrary number of fractional seconds in the
2728 An attacker can use this to craft malformed certificates and CRLs of
2729 various sizes and potentially cause a segmentation fault, resulting in
2730 a DoS on applications that verify certificates or CRLs. TLS clients
2731 that verify CRLs are affected. TLS clients and servers with client
2732 authentication enabled may be affected if they use custom verification
2735 This issue was reported to OpenSSL by Robert Swiecki (Google), and
2736 independently by Hanno Böck.
2740 *) PKCS7 crash with missing EnvelopedContent
2742 The PKCS#7 parsing code does not handle missing inner EncryptedContent
2743 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
2744 with missing content and trigger a NULL pointer dereference on parsing.
2746 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
2747 structures from untrusted sources are affected. OpenSSL clients and
2748 servers are not affected.
2750 This issue was reported to OpenSSL by Michal Zalewski (Google).
2754 *) CMS verify infinite loop with unknown hash function
2756 When verifying a signedData message the CMS code can enter an infinite loop
2757 if presented with an unknown hash function OID. This can be used to perform
2758 denial of service against any system which verifies signedData messages using
2760 This issue was reported to OpenSSL by Johannes Bauer.
2764 *) Race condition handling NewSessionTicket
2766 If a NewSessionTicket is received by a multi-threaded client when attempting to
2767 reuse a previous ticket then a race condition can occur potentially leading to
2768 a double free of the ticket data.
2772 *) Only support 256-bit or stronger elliptic curves with the
2773 'ecdh_auto' setting (server) or by default (client). Of supported
2774 curves, prefer P-256 (both).
2777 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
2779 *) ClientHello sigalgs DoS fix
2781 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
2782 invalid signature algorithms extension a NULL pointer dereference will
2783 occur. This can be exploited in a DoS attack against the server.
2785 This issue was was reported to OpenSSL by David Ramos of Stanford
2788 [Stephen Henson and Matt Caswell]
2790 *) Multiblock corrupted pointer fix
2792 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
2793 feature only applies on 64 bit x86 architecture platforms that support AES
2794 NI instructions. A defect in the implementation of "multiblock" can cause
2795 OpenSSL's internal write buffer to become incorrectly set to NULL when
2796 using non-blocking IO. Typically, when the user application is using a
2797 socket BIO for writing, this will only result in a failed connection.
2798 However if some other BIO is used then it is likely that a segmentation
2799 fault will be triggered, thus enabling a potential DoS attack.
2801 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
2805 *) Segmentation fault in DTLSv1_listen fix
2807 The DTLSv1_listen function is intended to be stateless and processes the
2808 initial ClientHello from many peers. It is common for user code to loop
2809 over the call to DTLSv1_listen until a valid ClientHello is received with
2810 an associated cookie. A defect in the implementation of DTLSv1_listen means
2811 that state is preserved in the SSL object from one invocation to the next
2812 that can lead to a segmentation fault. Errors processing the initial
2813 ClientHello can trigger this scenario. An example of such an error could be
2814 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
2817 This issue was reported to OpenSSL by Per Allansson.
2821 *) Segmentation fault in ASN1_TYPE_cmp fix
2823 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
2824 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
2825 certificate signature algorithm consistency this can be used to crash any
2826 certificate verification operation and exploited in a DoS attack. Any
2827 application which performs certificate verification is vulnerable including
2828 OpenSSL clients and servers which enable client authentication.
2832 *) Segmentation fault for invalid PSS parameters fix
2834 The signature verification routines will crash with a NULL pointer
2835 dereference if presented with an ASN.1 signature using the RSA PSS
2836 algorithm and invalid parameters. Since these routines are used to verify
2837 certificate signature algorithms this can be used to crash any
2838 certificate verification operation and exploited in a DoS attack. Any
2839 application which performs certificate verification is vulnerable including
2840 OpenSSL clients and servers which enable client authentication.
2842 This issue was was reported to OpenSSL by Brian Carpenter.
2846 *) ASN.1 structure reuse memory corruption fix
2848 Reusing a structure in ASN.1 parsing may allow an attacker to cause
2849 memory corruption via an invalid write. Such reuse is and has been
2850 strongly discouraged and is believed to be rare.
2852 Applications that parse structures containing CHOICE or ANY DEFINED BY
2853 components may be affected. Certificate parsing (d2i_X509 and related
2854 functions) are however not affected. OpenSSL clients and servers are
2859 *) PKCS7 NULL pointer dereferences fix
2861 The PKCS#7 parsing code does not handle missing outer ContentInfo
2862 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
2863 missing content and trigger a NULL pointer dereference on parsing.
2865 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
2866 otherwise parse PKCS#7 structures from untrusted sources are
2867 affected. OpenSSL clients and servers are not affected.
2869 This issue was reported to OpenSSL by Michal Zalewski (Google).
2873 *) DoS via reachable assert in SSLv2 servers fix
2875 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
2876 servers that both support SSLv2 and enable export cipher suites by sending
2877 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
2879 This issue was discovered by Sean Burford (Google) and Emilia Käsper
2880 (OpenSSL development team).
2884 *) Empty CKE with client auth and DHE fix
2886 If client auth is used then a server can seg fault in the event of a DHE
2887 ciphersuite being selected and a zero length ClientKeyExchange message
2888 being sent by the client. This could be exploited in a DoS attack.
2892 *) Handshake with unseeded PRNG fix
2894 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
2895 with an unseeded PRNG. The conditions are:
2896 - The client is on a platform where the PRNG has not been seeded
2897 automatically, and the user has not seeded manually
2898 - A protocol specific client method version has been used (i.e. not
2899 SSL_client_methodv23)
2900 - A ciphersuite is used that does not require additional random data from
2901 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
2903 If the handshake succeeds then the client random that has been used will
2904 have been generated from a PRNG with insufficient entropy and therefore the
2905 output may be predictable.
2907 For example using the following command with an unseeded openssl will
2908 succeed on an unpatched platform:
2910 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
2914 *) Use After Free following d2i_ECPrivatekey error fix
2916 A malformed EC private key file consumed via the d2i_ECPrivateKey function
2917 could cause a use after free condition. This, in turn, could cause a double
2918 free in several private key parsing functions (such as d2i_PrivateKey
2919 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
2920 for applications that receive EC private keys from untrusted
2921 sources. This scenario is considered rare.
2923 This issue was discovered by the BoringSSL project and fixed in their
2928 *) X509_to_X509_REQ NULL pointer deref fix
2930 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
2931 the certificate key is invalid. This function is rarely used in practice.
2933 This issue was discovered by Brian Carpenter.
2937 *) Removed the export ciphers from the DEFAULT ciphers
2940 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
2942 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
2943 ARMv5 through ARMv8, as opposite to "locking" it to single one.
2944 So far those who have to target multiple platforms would compromise
2945 and argue that binary targeting say ARMv5 would still execute on
2946 ARMv8. "Universal" build resolves this compromise by providing
2947 near-optimal performance even on newer platforms.
2950 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
2951 (other platforms pending).
2952 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
2954 *) Add support for the SignedCertificateTimestampList certificate and
2955 OCSP response extensions from RFC6962.
2958 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
2959 for corner cases. (Certain input points at infinity could lead to
2960 bogus results, with non-infinity inputs mapped to infinity too.)
2963 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
2964 This covers AES, SHA256/512 and GHASH. "Initial" means that most
2965 common cases are optimized and there still is room for further
2966 improvements. Vector Permutation AES for Altivec is also added.
2969 *) Add support for little-endian ppc64 Linux target.
2970 [Marcelo Cerri (IBM)]
2972 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
2973 SHA1, SHA256 and GHASH. "Initial" means that most common cases
2974 are optimized and there still is room for further improvements.
2975 Both 32- and 64-bit modes are supported.
2976 [Andy Polyakov, Ard Biesheuvel (Linaro)]
2978 *) Improved ARMv7 NEON support.
2981 *) Support for SPARC Architecture 2011 crypto extensions, first
2982 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
2983 SHA256/512, MD5, GHASH and modular exponentiation.
2984 [Andy Polyakov, David Miller]
2986 *) Accelerated modular exponentiation for Intel processors, a.k.a.
2988 [Shay Gueron & Vlad Krasnov (Intel Corp)]
2990 *) Support for new and upcoming Intel processors, including AVX2,
2991 BMI and SHA ISA extensions. This includes additional "stitched"
2992 implementations, AESNI-SHA256 and GCM, and multi-buffer support
2995 This work was sponsored by Intel Corp.
2998 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
2999 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
3000 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
3003 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
3004 this fixes a limitation in previous versions of OpenSSL.
3007 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
3008 MGF1 digest and OAEP label.
3011 *) Add EVP support for key wrapping algorithms, to avoid problems with
3012 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
3013 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
3014 algorithms and include tests cases.
3017 *) Add functions to allocate and set the fields of an ECDSA_METHOD
3019 [Douglas E. Engert, Steve Henson]
3021 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
3022 difference in days and seconds between two tm or ASN1_TIME structures.
3025 *) Add -rev test option to s_server to just reverse order of characters
3026 received by client and send back to server. Also prints an abbreviated
3027 summary of the connection parameters.
3030 *) New option -brief for s_client and s_server to print out a brief summary
3031 of connection parameters.
3034 *) Add callbacks for arbitrary TLS extensions.
3035 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
3037 *) New option -crl_download in several openssl utilities to download CRLs
3038 from CRLDP extension in certificates.
3041 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
3044 *) New function X509_CRL_diff to generate a delta CRL from the difference
3045 of two full CRLs. Add support to "crl" utility.
3048 *) New functions to set lookup_crls function and to retrieve
3049 X509_STORE from X509_STORE_CTX.
3052 *) Print out deprecated issuer and subject unique ID fields in
3056 *) Extend OCSP I/O functions so they can be used for simple general purpose
3057 HTTP as well as OCSP. New wrapper function which can be used to download
3058 CRLs using the OCSP API.
3061 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
3064 *) SSL_CONF* functions. These provide a common framework for application
3065 configuration using configuration files or command lines.
3068 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
3069 message callback and prints the results. Needs compile time option
3070 "enable-ssl-trace". New options to s_client and s_server to enable
3074 *) New ctrl and macro to retrieve supported points extensions.
3075 Print out extension in s_server and s_client.
3078 *) New functions to retrieve certificate signature and signature
3082 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
3086 *) New Suite B modes for TLS code. These use and enforce the requirements
3087 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
3088 only use Suite B curves. The Suite B modes can be set by using the
3089 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
3092 *) New chain verification flags for Suite B levels of security. Check
3093 algorithms are acceptable when flags are set in X509_verify_cert.
3096 *) Make tls1_check_chain return a set of flags indicating checks passed
3097 by a certificate chain. Add additional tests to handle client
3098 certificates: checks for matching certificate type and issuer name
3102 *) If an attempt is made to use a signature algorithm not in the peer
3103 preference list abort the handshake. If client has no suitable
3104 signature algorithms in response to a certificate request do not
3105 use the certificate.
3108 *) If server EC tmp key is not in client preference list abort handshake.
3111 *) Add support for certificate stores in CERT structure. This makes it
3112 possible to have different stores per SSL structure or one store in
3113 the parent SSL_CTX. Include distinct stores for certificate chain
3114 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
3115 to build and store a certificate chain in CERT structure: returning
3116 an error if the chain cannot be built: this will allow applications
3117 to test if a chain is correctly configured.
3119 Note: if the CERT based stores are not set then the parent SSL_CTX
3120 store is used to retain compatibility with existing behaviour.
3124 *) New function ssl_set_client_disabled to set a ciphersuite disabled
3125 mask based on the current session, check mask when sending client
3126 hello and checking the requested ciphersuite.
3129 *) New ctrls to retrieve and set certificate types in a certificate
3130 request message. Print out received values in s_client. If certificate
3131 types is not set with custom values set sensible values based on
3132 supported signature algorithms.
3135 *) Support for distinct client and server supported signature algorithms.
3138 *) Add certificate callback. If set this is called whenever a certificate
3139 is required by client or server. An application can decide which
3140 certificate chain to present based on arbitrary criteria: for example
3141 supported signature algorithms. Add very simple example to s_server.
3142 This fixes many of the problems and restrictions of the existing client
3143 certificate callback: for example you can now clear an existing
3144 certificate and specify the whole chain.
3147 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
3148 the certificate can be used for (if anything). Set valid_flags field
3149 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
3150 to have similar checks in it.
3152 Add new "cert_flags" field to CERT structure and include a "strict mode".
3153 This enforces some TLS certificate requirements (such as only permitting
3154 certificate signature algorithms contained in the supported algorithms
3155 extension) which some implementations ignore: this option should be used
3156 with caution as it could cause interoperability issues.
3159 *) Update and tidy signature algorithm extension processing. Work out
3160 shared signature algorithms based on preferences and peer algorithms
3161 and print them out in s_client and s_server. Abort handshake if no
3162 shared signature algorithms.
3165 *) Add new functions to allow customised supported signature algorithms
3166 for SSL and SSL_CTX structures. Add options to s_client and s_server
3170 *) New function SSL_certs_clear() to delete all references to certificates
3171 from an SSL structure. Before this once a certificate had been added
3172 it couldn't be removed.
3175 *) Integrate hostname, email address and IP address checking with certificate
3176 verification. New verify options supporting checking in openssl utility.
3179 *) Fixes and wildcard matching support to hostname and email checking
3180 functions. Add manual page.
3181 [Florian Weimer (Red Hat Product Security Team)]
3183 *) New functions to check a hostname email or IP address against a
3184 certificate. Add options x509 utility to print results of checks against
3188 *) Fix OCSP checking.
3189 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
3191 *) Initial experimental support for explicitly trusted non-root CAs.
3192 OpenSSL still tries to build a complete chain to a root but if an
3193 intermediate CA has a trust setting included that is used. The first
3194 setting is used: whether to trust (e.g., -addtrust option to the x509
3198 *) Add -trusted_first option which attempts to find certificates in the
3199 trusted store even if an untrusted chain is also supplied.
3202 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
3203 platform support for Linux and Android.
3206 *) Support for linux-x32, ILP32 environment in x86_64 framework.
3209 *) Experimental multi-implementation support for FIPS capable OpenSSL.
3210 When in FIPS mode the approved implementations are used as normal,
3211 when not in FIPS mode the internal unapproved versions are used instead.
3212 This means that the FIPS capable OpenSSL isn't forced to use the
3213 (often lower performance) FIPS implementations outside FIPS mode.
3216 *) Transparently support X9.42 DH parameters when calling
3217 PEM_read_bio_DHparameters. This means existing applications can handle
3218 the new parameter format automatically.
3221 *) Initial experimental support for X9.42 DH parameter format: mainly
3222 to support use of 'q' parameter for RFC5114 parameters.
3225 *) Add DH parameters from RFC5114 including test data to dhtest.
3228 *) Support for automatic EC temporary key parameter selection. If enabled
3229 the most preferred EC parameters are automatically used instead of
3230 hardcoded fixed parameters. Now a server just has to call:
3231 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
3232 support ECDH and use the most appropriate parameters.
3235 *) Enhance and tidy EC curve and point format TLS extension code. Use
3236 static structures instead of allocation if default values are used.
3237 New ctrls to set curves we wish to support and to retrieve shared curves.
3238 Print out shared curves in s_server. New options to s_server and s_client
3239 to set list of supported curves.
3242 *) New ctrls to retrieve supported signature algorithms and
3243 supported curve values as an array of NIDs. Extend openssl utility
3244 to print out received values.
3247 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
3248 between NIDs and the more common NIST names such as "P-256". Enhance
3249 ecparam utility and ECC method to recognise the NIST names for curves.
3252 *) Enhance SSL/TLS certificate chain handling to support different
3253 chains for each certificate instead of one chain in the parent SSL_CTX.
3256 *) Support for fixed DH ciphersuite client authentication: where both
3257 server and client use DH certificates with common parameters.
3260 *) Support for fixed DH ciphersuites: those requiring DH server
3264 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
3266 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
3267 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
3268 X509_CINF_get_signature were reverted post internal team review.
3270 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
3272 *) Build fixes for the Windows and OpenVMS platforms
3273 [Matt Caswell and Richard Levitte]
3275 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
3277 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
3278 message can cause a segmentation fault in OpenSSL due to a NULL pointer
3279 dereference. This could lead to a Denial Of Service attack. Thanks to
3280 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
3284 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
3285 dtls1_buffer_record function under certain conditions. In particular this
3286 could occur if an attacker sent repeated DTLS records with the same
3287 sequence number but for the next epoch. The memory leak could be exploited
3288 by an attacker in a Denial of Service attack through memory exhaustion.
3289 Thanks to Chris Mueller for reporting this issue.
3293 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
3294 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
3295 method would be set to NULL which could later result in a NULL pointer
3296 dereference. Thanks to Frank Schmirler for reporting this issue.
3300 *) Abort handshake if server key exchange message is omitted for ephemeral
3303 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
3304 reporting this issue.
3308 *) Remove non-export ephemeral RSA code on client and server. This code
3309 violated the TLS standard by allowing the use of temporary RSA keys in
3310 non-export ciphersuites and could be used by a server to effectively
3311 downgrade the RSA key length used to a value smaller than the server
3312 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
3313 INRIA or reporting this issue.
3317 *) Fixed issue where DH client certificates are accepted without verification.
3318 An OpenSSL server will accept a DH certificate for client authentication
3319 without the certificate verify message. This effectively allows a client to
3320 authenticate without the use of a private key. This only affects servers
3321 which trust a client certificate authority which issues certificates
3322 containing DH keys: these are extremely rare and hardly ever encountered.
3323 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
3328 *) Ensure that the session ID context of an SSL is updated when its
3329 SSL_CTX is updated via SSL_set_SSL_CTX.
3331 The session ID context is typically set from the parent SSL_CTX,
3332 and can vary with the CTX.
3335 *) Fix various certificate fingerprint issues.
3337 By using non-DER or invalid encodings outside the signed portion of a
3338 certificate the fingerprint can be changed without breaking the signature.
3339 Although no details of the signed portion of the certificate can be changed
3340 this can cause problems with some applications: e.g. those using the
3341 certificate fingerprint for blacklists.
3343 1. Reject signatures with non zero unused bits.
3345 If the BIT STRING containing the signature has non zero unused bits reject
3346 the signature. All current signature algorithms require zero unused bits.
3348 2. Check certificate algorithm consistency.
3350 Check the AlgorithmIdentifier inside TBS matches the one in the
3351 certificate signature. NB: this will result in signature failure
3352 errors for some broken certificates.
3354 Thanks to Konrad Kraszewski from Google for reporting this issue.
3356 3. Check DSA/ECDSA signatures use DER.
3358 Re-encode DSA/ECDSA signatures and compare with the original received
3359 signature. Return an error if there is a mismatch.
3361 This will reject various cases including garbage after signature
3362 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
3363 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
3364 (negative or with leading zeroes).
3366 Further analysis was conducted and fixes were developed by Stephen Henson
3367 of the OpenSSL core team.
3372 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
3373 results on some platforms, including x86_64. This bug occurs at random
3374 with a very low probability, and is not known to be exploitable in any
3375 way, though its exact impact is difficult to determine. Thanks to Pieter
3376 Wuille (Blockstream) who reported this issue and also suggested an initial
3377 fix. Further analysis was conducted by the OpenSSL development team and
3378 Adam Langley of Google. The final fix was developed by Andy Polyakov of
3379 the OpenSSL core team.
3383 *) Do not resume sessions on the server if the negotiated protocol
3384 version does not match the session's version. Resuming with a different
3385 version, while not strictly forbidden by the RFC, is of questionable
3386 sanity and breaks all known clients.
3387 [David Benjamin, Emilia Käsper]
3389 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
3390 early CCS messages during renegotiation. (Note that because
3391 renegotiation is encrypted, this early CCS was not exploitable.)
3394 *) Tighten client-side session ticket handling during renegotiation:
3395 ensure that the client only accepts a session ticket if the server sends
3396 the extension anew in the ServerHello. Previously, a TLS client would
3397 reuse the old extension state and thus accept a session ticket if one was
3398 announced in the initial ServerHello.
3400 Similarly, ensure that the client requires a session ticket if one
3401 was advertised in the ServerHello. Previously, a TLS client would
3402 ignore a missing NewSessionTicket message.
3405 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
3407 *) SRTP Memory Leak.
3409 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
3410 sends a carefully crafted handshake message, to cause OpenSSL to fail
3411 to free up to 64k of memory causing a memory leak. This could be
3412 exploited in a Denial Of Service attack. This issue affects OpenSSL
3413 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
3414 whether SRTP is used or configured. Implementations of OpenSSL that
3415 have been compiled with OPENSSL_NO_SRTP defined are not affected.
3417 The fix was developed by the OpenSSL team.
3421 *) Session Ticket Memory Leak.
3423 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
3424 integrity of that ticket is first verified. In the event of a session
3425 ticket integrity check failing, OpenSSL will fail to free memory
3426 causing a memory leak. By sending a large number of invalid session
3427 tickets an attacker could exploit this issue in a Denial Of Service
3432 *) Build option no-ssl3 is incomplete.
3434 When OpenSSL is configured with "no-ssl3" as a build option, servers
3435 could accept and complete a SSL 3.0 handshake, and clients could be
3436 configured to send them.
3438 [Akamai and the OpenSSL team]
3440 *) Add support for TLS_FALLBACK_SCSV.
3441 Client applications doing fallback retries should call
3442 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
3444 [Adam Langley, Bodo Moeller]
3446 *) Add additional DigestInfo checks.
3448 Re-encode DigestInto in DER and check against the original when
3449 verifying RSA signature: this will reject any improperly encoded
3450 DigestInfo structures.
3452 Note: this is a precautionary measure and no attacks are currently known.
3456 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
3458 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
3459 SRP code can be overrun an internal buffer. Add sanity check that
3460 g, A, B < N to SRP code.
3462 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
3463 Group for discovering this issue.
3467 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
3468 TLS 1.0 instead of higher protocol versions when the ClientHello message
3469 is badly fragmented. This allows a man-in-the-middle attacker to force a
3470 downgrade to TLS 1.0 even if both the server and the client support a
3471 higher protocol version, by modifying the client's TLS records.
3473 Thanks to David Benjamin and Adam Langley (Google) for discovering and
3474 researching this issue.
3478 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
3479 to a denial of service attack. A malicious server can crash the client
3480 with a null pointer dereference (read) by specifying an anonymous (EC)DH
3481 ciphersuite and sending carefully crafted handshake messages.
3483 Thanks to Felix Gröbert (Google) for discovering and researching this
3488 *) By sending carefully crafted DTLS packets an attacker could cause openssl
3489 to leak memory. This can be exploited through a Denial of Service attack.
3490 Thanks to Adam Langley for discovering and researching this issue.
3494 *) An attacker can force openssl to consume large amounts of memory whilst
3495 processing DTLS handshake messages. This can be exploited through a
3496 Denial of Service attack.
3497 Thanks to Adam Langley for discovering and researching this issue.
3501 *) An attacker can force an error condition which causes openssl to crash
3502 whilst processing DTLS packets due to memory being freed twice. This
3503 can be exploited through a Denial of Service attack.
3504 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
3509 *) If a multithreaded client connects to a malicious server using a resumed
3510 session and the server sends an ec point format extension it could write
3511 up to 255 bytes to freed memory.
3513 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
3518 *) A malicious server can crash an OpenSSL client with a null pointer
3519 dereference (read) by specifying an SRP ciphersuite even though it was not
3520 properly negotiated with the client. This can be exploited through a
3521 Denial of Service attack.
3523 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
3524 discovering and researching this issue.
3528 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
3529 X509_name_oneline, X509_name_print_ex et al. to leak some information
3530 from the stack. Applications may be affected if they echo pretty printing
3531 output to the attacker.
3533 Thanks to Ivan Fratric (Google) for discovering this issue.
3535 [Emilia Käsper, and Steve Henson]
3537 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3538 for corner cases. (Certain input points at infinity could lead to
3539 bogus results, with non-infinity inputs mapped to infinity too.)
3542 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
3544 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
3545 handshake can force the use of weak keying material in OpenSSL
3546 SSL/TLS clients and servers.
3548 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
3549 researching this issue. (CVE-2014-0224)
3550 [KIKUCHI Masashi, Steve Henson]
3552 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
3553 OpenSSL DTLS client the code can be made to recurse eventually crashing
3556 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
3558 [Imre Rad, Steve Henson]
3560 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
3561 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
3562 client or server. This is potentially exploitable to run arbitrary
3563 code on a vulnerable client or server.
3565 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
3566 [Jüri Aedla, Steve Henson]
3568 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
3569 are subject to a denial of service attack.
3571 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
3572 this issue. (CVE-2014-3470)
3573 [Felix Gröbert, Ivan Fratric, Steve Henson]
3575 *) Harmonize version and its documentation. -f flag is used to display
3577 [mancha <mancha1@zoho.com>]
3579 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
3580 in i2d_ECPrivateKey.
3581 [mancha <mancha1@zoho.com>]
3583 *) Fix some double frees. These are not thought to be exploitable.
3584 [mancha <mancha1@zoho.com>]
3586 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
3588 *) A missing bounds check in the handling of the TLS heartbeat extension
3589 can be used to reveal up to 64k of memory to a connected client or
3592 Thanks for Neel Mehta of Google Security for discovering this bug and to
3593 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
3594 preparing the fix (CVE-2014-0160)
3595 [Adam Langley, Bodo Moeller]
3597 *) Fix for the attack described in the paper "Recovering OpenSSL
3598 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
3599 by Yuval Yarom and Naomi Benger. Details can be obtained from:
3600 http://eprint.iacr.org/2014/140
3602 Thanks to Yuval Yarom and Naomi Benger for discovering this
3603 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
3604 [Yuval Yarom and Naomi Benger]
3606 *) TLS pad extension: draft-agl-tls-padding-03
3608 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
3609 TLS client Hello record length value would otherwise be > 255 and
3610 less that 512 pad with a dummy extension containing zeroes so it
3611 is at least 512 bytes long.
3613 [Adam Langley, Steve Henson]
3615 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
3617 *) Fix for TLS record tampering bug. A carefully crafted invalid
3618 handshake could crash OpenSSL with a NULL pointer exception.
3619 Thanks to Anton Johansson for reporting this issues.
3622 *) Keep original DTLS digest and encryption contexts in retransmission
3623 structures so we can use the previous session parameters if they need
3624 to be resent. (CVE-2013-6450)
3627 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
3628 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
3629 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
3630 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
3631 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
3632 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
3633 [Rob Stradling, Adam Langley]
3635 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
3637 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
3638 supporting platforms or when small records were transferred.
3639 [Andy Polyakov, Steve Henson]
3641 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
3643 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
3645 This addresses the flaw in CBC record processing discovered by
3646 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
3647 at: http://www.isg.rhul.ac.uk/tls/
3649 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
3650 Security Group at Royal Holloway, University of London
3651 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
3652 Emilia Käsper for the initial patch.
3654 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
3656 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
3657 ciphersuites which can be exploited in a denial of service attack.
3658 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
3659 and detecting this bug and to Wolfgang Ettlinger
3660 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
3664 *) Return an error when checking OCSP signatures when key is NULL.
3665 This fixes a DoS attack. (CVE-2013-0166)
3668 *) Make openssl verify return errors.
3669 [Chris Palmer <palmer@google.com> and Ben Laurie]
3671 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
3672 the right response is stapled. Also change SSL_get_certificate()
3673 so it returns the certificate actually sent.
3674 See http://rt.openssl.org/Ticket/Display.html?id=2836.
3675 [Rob Stradling <rob.stradling@comodo.com>]
3677 *) Fix possible deadlock when decoding public keys.
3680 *) Don't use TLS 1.0 record version number in initial client hello
3684 Changes between 1.0.1b and 1.0.1c [10 May 2012]
3686 *) Sanity check record length before skipping explicit IV in TLS
3687 1.2, 1.1 and DTLS to fix DoS attack.
3689 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
3690 fuzzing as a service testing platform.
3694 *) Initialise tkeylen properly when encrypting CMS messages.
3695 Thanks to Solar Designer of Openwall for reporting this issue.
3698 *) In FIPS mode don't try to use composite ciphers as they are not
3702 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
3704 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
3705 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
3706 mean any application compiled against OpenSSL 1.0.0 headers setting
3707 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling
3708 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
3709 0x10000000L Any application which was previously compiled against
3710 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
3711 will need to be recompiled as a result. Letting be results in
3712 inability to disable specifically TLS 1.1 and in client context,
3713 in unlike event, limit maximum offered version to TLS 1.0 [see below].
3716 *) In order to ensure interoperability SSL_OP_NO_protocolX does not
3717 disable just protocol X, but all protocols above X *if* there are
3718 protocols *below* X still enabled. In more practical terms it means
3719 that if application wants to disable TLS1.0 in favor of TLS1.1 and
3720 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
3721 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
3725 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
3727 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
3728 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
3729 in CRYPTO_realloc_clean.
3731 Thanks to Tavis Ormandy, Google Security Team, for discovering this
3732 issue and to Adam Langley <agl@chromium.org> for fixing it.
3734 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
3736 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
3739 *) Workarounds for some broken servers that "hang" if a client hello
3740 record length exceeds 255 bytes.
3742 1. Do not use record version number > TLS 1.0 in initial client
3743 hello: some (but not all) hanging servers will now work.
3744 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
3745 the number of ciphers sent in the client hello. This should be
3746 set to an even number, such as 50, for example by passing:
3747 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
3748 Most broken servers should now work.
3749 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
3750 TLS 1.2 client support entirely.
3753 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
3756 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
3758 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
3759 STRING form instead of a DigestInfo.
3762 *) The format used for MDC2 RSA signatures is inconsistent between EVP
3763 and the RSA_sign/RSA_verify functions. This was made more apparent when
3764 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
3765 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
3766 the correct format in RSA_verify so both forms transparently work.
3769 *) Some servers which support TLS 1.0 can choke if we initially indicate
3770 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
3771 encrypted premaster secret. As a workaround use the maximum permitted
3772 client version in client hello, this should keep such servers happy
3773 and still work with previous versions of OpenSSL.
3776 *) Add support for TLS/DTLS heartbeats.
3777 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3779 *) Add support for SCTP.
3780 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3782 *) Improved PRNG seeding for VOS.
3783 [Paul Green <Paul.Green@stratus.com>]
3785 *) Extensive assembler packs updates, most notably:
3787 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
3788 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
3789 - x86_64: bit-sliced AES implementation;
3790 - ARM: NEON support, contemporary platforms optimizations;
3791 - s390x: z196 support;
3792 - *: GHASH and GF(2^m) multiplication implementations;
3796 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
3797 (removal of unnecessary code)
3798 [Peter Sylvester <peter.sylvester@edelweb.fr>]
3800 *) Add TLS key material exporter from RFC 5705.
3803 *) Add DTLS-SRTP negotiation from RFC 5764.
3806 *) Add Next Protocol Negotiation,
3807 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
3808 disabled with a no-npn flag to config or Configure. Code donated
3810 [Adam Langley <agl@google.com> and Ben Laurie]
3812 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
3813 NIST-P256, NIST-P521, with constant-time single point multiplication on
3814 typical inputs. Compiler support for the nonstandard type __uint128_t is
3815 required to use this (present in gcc 4.4 and later, for 64-bit builds).
3816 Code made available under Apache License version 2.0.
3818 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
3819 line to include this in your build of OpenSSL, and run "make depend" (or
3820 "make update"). This enables the following EC_METHODs:
3822 EC_GFp_nistp224_method()
3823 EC_GFp_nistp256_method()
3824 EC_GFp_nistp521_method()
3826 EC_GROUP_new_by_curve_name() will automatically use these (while
3827 EC_GROUP_new_curve_GFp() currently prefers the more flexible
3829 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
3831 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
3832 all platforms. Move ssize_t definition from e_os.h to the public
3833 header file e_os2.h as it now appears in public header file cms.h
3836 *) New -sigopt option to the ca, req and x509 utilities. Additional
3837 signature parameters can be passed using this option and in
3841 *) Add RSA PSS signing function. This will generate and set the
3842 appropriate AlgorithmIdentifiers for PSS based on those in the
3843 corresponding EVP_MD_CTX structure. No application support yet.
3846 *) Support for companion algorithm specific ASN1 signing routines.
3847 New function ASN1_item_sign_ctx() signs a pre-initialised
3848 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
3849 the appropriate parameters.
3852 *) Add new algorithm specific ASN1 verification initialisation function
3853 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
3854 handling will be the same no matter what EVP_PKEY_METHOD is used.
3855 Add a PSS handler to support verification of PSS signatures: checked
3856 against a number of sample certificates.
3859 *) Add signature printing for PSS. Add PSS OIDs.
3860 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
3862 *) Add algorithm specific signature printing. An individual ASN1 method
3863 can now print out signatures instead of the standard hex dump.
3865 More complex signatures (e.g. PSS) can print out more meaningful
3866 information. Include DSA version that prints out the signature
3870 *) Password based recipient info support for CMS library: implementing
3874 *) Split password based encryption into PBES2 and PBKDF2 functions. This
3875 neatly separates the code into cipher and PBE sections and is required
3876 for some algorithms that split PBES2 into separate pieces (such as
3877 password based CMS).
3880 *) Session-handling fixes:
3881 - Fix handling of connections that are resuming with a session ID,
3882 but also support Session Tickets.
3883 - Fix a bug that suppressed issuing of a new ticket if the client
3884 presented a ticket with an expired session.
3885 - Try to set the ticket lifetime hint to something reasonable.
3886 - Make tickets shorter by excluding irrelevant information.
3887 - On the client side, don't ignore renewed tickets.
3888 [Adam Langley, Bodo Moeller (Google)]
3890 *) Fix PSK session representation.
3893 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
3895 This work was sponsored by Intel.
3898 *) Add GCM support to TLS library. Some custom code is needed to split
3899 the IV between the fixed (from PRF) and explicit (from TLS record)
3900 portions. This adds all GCM ciphersuites supported by RFC5288 and
3901 RFC5289. Generalise some AES* cipherstrings to include GCM and
3902 add a special AESGCM string for GCM only.
3905 *) Expand range of ctrls for AES GCM. Permit setting invocation
3906 field on decrypt and retrieval of invocation field only on encrypt.
3909 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
3910 As required by RFC5289 these ciphersuites cannot be used if for
3911 versions of TLS earlier than 1.2.
3914 *) For FIPS capable OpenSSL interpret a NULL default public key method
3915 as unset and return the appropriate default but do *not* set the default.
3916 This means we can return the appropriate method in applications that
3917 switch between FIPS and non-FIPS modes.
3920 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
3921 ENGINE is used then we cannot handle that in the FIPS module so we
3922 keep original code iff non-FIPS operations are allowed.
3925 *) Add -attime option to openssl utilities.
3926 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
3928 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
3931 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
3932 FIPS EC methods unconditionally for now.
3935 *) New build option no-ec2m to disable characteristic 2 code.
3938 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
3939 all cases can be covered as some introduce binary incompatibilities.
3942 *) Redirect RSA operations to FIPS module including keygen,
3943 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
3946 *) Add similar low level API blocking to ciphers.
3949 *) Low level digest APIs are not approved in FIPS mode: any attempt
3950 to use these will cause a fatal error. Applications that *really* want
3951 to use them can use the private_* version instead.
3954 *) Redirect cipher operations to FIPS module for FIPS builds.
3957 *) Redirect digest operations to FIPS module for FIPS builds.
3960 *) Update build system to add "fips" flag which will link in fipscanister.o
3961 for static and shared library builds embedding a signature if needed.
3964 *) Output TLS supported curves in preference order instead of numerical
3965 order. This is currently hardcoded for the highest order curves first.
3966 This should be configurable so applications can judge speed vs strength.
3969 *) Add TLS v1.2 server support for client authentication.
3972 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
3976 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
3977 FIPS modules versions.
3980 *) Add TLS v1.2 client side support for client authentication. Keep cache
3981 of handshake records longer as we don't know the hash algorithm to use
3982 until after the certificate request message is received.
3985 *) Initial TLS v1.2 client support. Add a default signature algorithms
3986 extension including all the algorithms we support. Parse new signature
3987 format in client key exchange. Relax some ECC signing restrictions for
3988 TLS v1.2 as indicated in RFC5246.
3991 *) Add server support for TLS v1.2 signature algorithms extension. Switch
3992 to new signature format when needed using client digest preference.
3993 All server ciphersuites should now work correctly in TLS v1.2. No client
3994 support yet and no support for client certificates.
3997 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
3998 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
3999 ciphersuites. At present only RSA key exchange ciphersuites work with
4000 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
4001 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
4002 and version checking.
4005 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
4006 with this defined it will not be affected by any changes to ssl internal
4007 structures. Add several utility functions to allow openssl application
4008 to work with OPENSSL_NO_SSL_INTERN defined.
4011 *) A long standing patch to add support for SRP from EdelWeb (Peter
4012 Sylvester and Christophe Renou) was integrated.
4013 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
4014 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
4017 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
4020 *) Permit abbreviated handshakes when renegotiating using the function
4021 SSL_renegotiate_abbreviated().
4022 [Robin Seggelmann <seggelmann@fh-muenster.de>]
4024 *) Add call to ENGINE_register_all_complete() to
4025 ENGINE_load_builtin_engines(), so some implementations get used
4026 automatically instead of needing explicit application support.
4029 *) Add support for TLS key exporter as described in RFC5705.
4030 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
4032 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
4033 a few changes are required:
4035 Add SSL_OP_NO_TLSv1_1 flag.
4036 Add TLSv1_1 methods.
4037 Update version checking logic to handle version 1.1.
4038 Add explicit IV handling (ported from DTLS code).
4039 Add command line options to s_client/s_server.
4042 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
4044 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
4045 in CMS and PKCS7 code. When RSA decryption fails use a random key for
4046 content decryption and always return the same error. Note: this attack
4047 needs on average 2^20 messages so it only affects automated senders. The
4048 old behaviour can be re-enabled in the CMS code by setting the
4049 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
4050 an MMA defence is not necessary.
4051 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
4052 this issue. (CVE-2012-0884)
4055 *) Fix CVE-2011-4619: make sure we really are receiving a
4056 client hello before rejecting multiple SGC restarts. Thanks to
4057 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
4060 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
4062 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
4063 Thanks to Antonio Martin, Enterprise Secure Access Research and
4064 Development, Cisco Systems, Inc. for discovering this bug and
4065 preparing a fix. (CVE-2012-0050)
4068 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
4070 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
4071 of the Vaudenay padding oracle attack on CBC mode encryption
4072 which enables an efficient plaintext recovery attack against
4073 the OpenSSL implementation of DTLS. Their attack exploits timing
4074 differences arising during decryption processing. A research
4075 paper describing this attack can be found at:
4076 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
4077 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
4078 Security Group at Royal Holloway, University of London
4079 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
4080 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
4081 for preparing the fix. (CVE-2011-4108)
4082 [Robin Seggelmann, Michael Tuexen]
4084 *) Clear bytes used for block padding of SSL 3.0 records.
4086 [Adam Langley (Google)]
4088 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
4089 Kadianakis <desnacked@gmail.com> for discovering this issue and
4090 Adam Langley for preparing the fix. (CVE-2011-4619)
4091 [Adam Langley (Google)]
4093 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
4094 [Andrey Kulikov <amdeich@gmail.com>]
4096 *) Prevent malformed RFC3779 data triggering an assertion failure.
4097 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
4098 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
4099 [Rob Austein <sra@hactrn.net>]
4101 *) Improved PRNG seeding for VOS.
4102 [Paul Green <Paul.Green@stratus.com>]
4104 *) Fix ssl_ciph.c set-up race.
4105 [Adam Langley (Google)]
4107 *) Fix spurious failures in ecdsatest.c.
4108 [Emilia Käsper (Google)]
4110 *) Fix the BIO_f_buffer() implementation (which was mixing different
4111 interpretations of the '..._len' fields).
4112 [Adam Langley (Google)]
4114 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
4115 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
4116 threads won't reuse the same blinding coefficients.
4118 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
4119 lock to call BN_BLINDING_invert_ex, and avoids one use of
4120 BN_BLINDING_update for each BN_BLINDING structure (previously,
4121 the last update always remained unused).
4122 [Emilia Käsper (Google)]
4124 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
4125 [Bob Buckholz (Google)]
4127 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
4129 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
4130 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
4131 [Kaspar Brand <ossl@velox.ch>]
4133 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
4134 for multi-threaded use of ECDH. (CVE-2011-3210)
4135 [Adam Langley (Google)]
4137 *) Fix x509_name_ex_d2i memory leak on bad inputs.
4140 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
4141 signature public key algorithm by using OID xref utilities instead.
4142 Before this you could only use some ECC ciphersuites with SHA1 only.
4145 *) Add protection against ECDSA timing attacks as mentioned in the paper
4146 by Billy Bob Brumley and Nicola Tuveri, see:
4148 http://eprint.iacr.org/2011/232.pdf
4150 [Billy Bob Brumley and Nicola Tuveri]
4152 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
4154 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
4155 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
4157 *) Fix bug in string printing code: if *any* escaping is enabled we must
4158 escape the escape character (backslash) or the resulting string is
4162 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
4164 *) Disable code workaround for ancient and obsolete Netscape browsers
4165 and servers: an attacker can use it in a ciphersuite downgrade attack.
4166 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
4169 *) Fixed J-PAKE implementation error, originally discovered by
4170 Sebastien Martini, further info and confirmation from Stefan
4171 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
4174 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
4176 *) Fix extension code to avoid race conditions which can result in a buffer
4177 overrun vulnerability: resumed sessions must not be modified as they can
4178 be shared by multiple threads. CVE-2010-3864
4181 *) Fix WIN32 build system to correctly link an ENGINE directory into
4185 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
4187 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
4189 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
4191 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
4193 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
4194 context. The operation can be customised via the ctrl mechanism in
4195 case ENGINEs want to include additional functionality.
4198 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
4201 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
4202 output hashes compatible with older versions of OpenSSL.
4203 [Willy Weisz <weisz@vcpc.univie.ac.at>]
4205 *) Fix compression algorithm handling: if resuming a session use the
4206 compression algorithm of the resumed session instead of determining
4207 it from client hello again. Don't allow server to change algorithm.
4210 *) Add load_crls() function to apps tidying load_certs() too. Add option
4211 to verify utility to allow additional CRLs to be included.
4214 *) Update OCSP request code to permit adding custom headers to the request:
4215 some responders need this.
4218 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
4220 [Julia Lawall <julia@diku.dk>]
4222 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
4223 needlessly dereferenced structures, used obsolete functions and
4224 didn't handle all updated verify codes correctly.
4227 *) Disable MD2 in the default configuration.
4230 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
4231 indicate the initial BIO being pushed or popped. This makes it possible
4232 to determine whether the BIO is the one explicitly called or as a result
4233 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
4234 it handles reference counts correctly and doesn't zero out the I/O bio
4235 when it is not being explicitly popped. WARNING: applications which
4236 included workarounds for the old buggy behaviour will need to be modified
4237 or they could free up already freed BIOs.
4240 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
4241 renaming to all platforms (within the 0.9.8 branch, this was
4242 done conditionally on Netware platforms to avoid a name clash).
4243 [Guenter <lists@gknw.net>]
4245 *) Add ECDHE and PSK support to DTLS.
4246 [Michael Tuexen <tuexen@fh-muenster.de>]
4248 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
4252 *) Add "missing" function EVP_MD_flags() (without this the only way to
4253 retrieve a digest flags is by accessing the structure directly. Update
4254 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
4255 or cipher is registered as in the "from" argument. Print out all
4256 registered digests in the dgst usage message instead of manually
4257 attempting to work them out.
4260 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
4261 this allows the use of compression and extensions. Change default cipher
4262 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
4263 by default unless an application cipher string requests it.
4266 *) Alter match criteria in PKCS12_parse(). It used to try to use local
4267 key ids to find matching certificates and keys but some PKCS#12 files
4268 don't follow the (somewhat unwritten) rules and this strategy fails.
4269 Now just gather all certificates together and the first private key
4270 then look for the first certificate that matches the key.
4273 *) Support use of registered digest and cipher names for dgst and cipher
4274 commands instead of having to add each one as a special case. So now
4281 openssl dgst -sha256 foo
4283 and this works for ENGINE based algorithms too.
4287 *) Update Gost ENGINE to support parameter files.
4288 [Victor B. Wagner <vitus@cryptocom.ru>]
4290 *) Support GeneralizedTime in ca utility.
4291 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
4293 *) Enhance the hash format used for certificate directory links. The new
4294 form uses the canonical encoding (meaning equivalent names will work
4295 even if they aren't identical) and uses SHA1 instead of MD5. This form
4296 is incompatible with the older format and as a result c_rehash should
4297 be used to rebuild symbolic links.
4300 *) Make PKCS#8 the default write format for private keys, replacing the
4301 traditional format. This form is standardised, more secure and doesn't
4302 include an implicit MD5 dependency.
4305 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
4306 committed to OpenSSL should pass this lot as a minimum.
4309 *) Add session ticket override functionality for use by EAP-FAST.
4310 [Jouni Malinen <j@w1.fi>]
4312 *) Modify HMAC functions to return a value. Since these can be implemented
4313 in an ENGINE errors can occur.
4316 *) Type-checked OBJ_bsearch_ex.
4319 *) Type-checked OBJ_bsearch. Also some constification necessitated
4320 by type-checking. Still to come: TXT_DB, bsearch(?),
4321 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
4325 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
4326 seconds to a tm structure directly, instead of going through OS
4327 specific date routines. This avoids any issues with OS routines such
4328 as the year 2038 bug. New *_adj() functions for ASN1 time structures
4329 and X509_time_adj_ex() to cover the extended range. The existing
4330 X509_time_adj() is still usable and will no longer have any date issues.
4333 *) Delta CRL support. New use deltas option which will attempt to locate
4334 and search any appropriate delta CRLs available.
4336 This work was sponsored by Google.
4339 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
4340 code and add additional score elements. Validate alternate CRL paths
4341 as part of the CRL checking and indicate a new error "CRL path validation
4342 error" in this case. Applications wanting additional details can use
4343 the verify callback and check the new "parent" field. If this is not
4344 NULL CRL path validation is taking place. Existing applications won't
4345 see this because it requires extended CRL support which is off by
4348 This work was sponsored by Google.
4351 *) Support for freshest CRL extension.
4353 This work was sponsored by Google.
4356 *) Initial indirect CRL support. Currently only supported in the CRLs
4357 passed directly and not via lookup. Process certificate issuer
4358 CRL entry extension and lookup CRL entries by bother issuer name
4359 and serial number. Check and process CRL issuer entry in IDP extension.
4361 This work was sponsored by Google.
4364 *) Add support for distinct certificate and CRL paths. The CRL issuer
4365 certificate is validated separately in this case. Only enabled if
4366 an extended CRL support flag is set: this flag will enable additional
4367 CRL functionality in future.
4369 This work was sponsored by Google.
4372 *) Add support for policy mappings extension.
4374 This work was sponsored by Google.
4377 *) Fixes to pathlength constraint, self issued certificate handling,
4378 policy processing to align with RFC3280 and PKITS tests.
4380 This work was sponsored by Google.
4383 *) Support for name constraints certificate extension. DN, email, DNS
4384 and URI types are currently supported.
4386 This work was sponsored by Google.
4389 *) To cater for systems that provide a pointer-based thread ID rather
4390 than numeric, deprecate the current numeric thread ID mechanism and
4391 replace it with a structure and associated callback type. This
4392 mechanism allows a numeric "hash" to be extracted from a thread ID in
4393 either case, and on platforms where pointers are larger than 'long',
4394 mixing is done to help ensure the numeric 'hash' is usable even if it
4395 can't be guaranteed unique. The default mechanism is to use "&errno"
4396 as a pointer-based thread ID to distinguish between threads.
4398 Applications that want to provide their own thread IDs should now use
4399 CRYPTO_THREADID_set_callback() to register a callback that will call
4400 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
4402 Note that ERR_remove_state() is now deprecated, because it is tied
4403 to the assumption that thread IDs are numeric. ERR_remove_state(0)
4404 to free the current thread's error state should be replaced by
4405 ERR_remove_thread_state(NULL).
4407 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
4408 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
4409 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
4410 application was previously providing a numeric thread callback that
4411 was inappropriate for distinguishing threads, then uniqueness might
4412 have been obtained with &errno that happened immediately in the
4413 intermediate development versions of OpenSSL; this is no longer the
4414 case, the numeric thread callback will now override the automatic use
4416 [Geoff Thorpe, with help from Bodo Moeller]
4418 *) Initial support for different CRL issuing certificates. This covers a
4419 simple case where the self issued certificates in the chain exist and
4420 the real CRL issuer is higher in the existing chain.
4422 This work was sponsored by Google.
4425 *) Removed effectively defunct crypto/store from the build.
4428 *) Revamp of STACK to provide stronger type-checking. Still to come:
4429 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
4430 ASN1_STRING, CONF_VALUE.
4433 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
4434 RAM on SSL connections. This option can save about 34k per idle SSL.
4437 *) Revamp of LHASH to provide stronger type-checking. Still to come:
4438 STACK, TXT_DB, bsearch, qsort.
4441 *) Initial support for Cryptographic Message Syntax (aka CMS) based
4442 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
4443 support for data, signedData, compressedData, digestedData and
4444 encryptedData, envelopedData types included. Scripts to check against
4445 RFC4134 examples draft and interop and consistency checks of many
4446 content types and variants.
4449 *) Add options to enc utility to support use of zlib compression BIO.
4452 *) Extend mk1mf to support importing of options and assembly language
4453 files from Configure script, currently only included in VC-WIN32.
4454 The assembly language rules can now optionally generate the source
4455 files from the associated perl scripts.
4458 *) Implement remaining functionality needed to support GOST ciphersuites.
4459 Interop testing has been performed using CryptoPro implementations.
4460 [Victor B. Wagner <vitus@cryptocom.ru>]
4462 *) s390x assembler pack.
4465 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
4469 *) Implement Opaque PRF Input TLS extension as specified in
4470 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
4471 official specification yet and no extension type assignment by
4472 IANA exists, this extension (for now) will have to be explicitly
4473 enabled when building OpenSSL by providing the extension number
4474 to use. For example, specify an option
4476 -DTLSEXT_TYPE_opaque_prf_input=0x9527
4478 to the "config" or "Configure" script to enable the extension,
4479 assuming extension number 0x9527 (which is a completely arbitrary
4480 and unofficial assignment based on the MD5 hash of the Internet
4481 Draft). Note that by doing so, you potentially lose
4482 interoperability with other TLS implementations since these might
4483 be using the same extension number for other purposes.
4485 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
4486 opaque PRF input value to use in the handshake. This will create
4487 an internal copy of the length-'len' string at 'src', and will
4488 return non-zero for success.
4490 To get more control and flexibility, provide a callback function
4493 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
4494 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
4498 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
4501 Callback function 'cb' will be called in handshakes, and is
4502 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
4503 Argument 'arg' is for application purposes (the value as given to
4504 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
4505 be provided to the callback function). The callback function
4506 has to return non-zero to report success: usually 1 to use opaque
4507 PRF input just if possible, or 2 to enforce use of the opaque PRF
4508 input. In the latter case, the library will abort the handshake
4509 if opaque PRF input is not successfully negotiated.
4511 Arguments 'peerinput' and 'len' given to the callback function
4512 will always be NULL and 0 in the case of a client. A server will
4513 see the client's opaque PRF input through these variables if
4514 available (NULL and 0 otherwise). Note that if the server
4515 provides an opaque PRF input, the length must be the same as the
4516 length of the client's opaque PRF input.
4518 Note that the callback function will only be called when creating
4519 a new session (session resumption can resume whatever was
4520 previously negotiated), and will not be called in SSL 2.0
4521 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
4522 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
4523 for applications that need to enforce opaque PRF input.
4527 *) Update ssl code to support digests other than SHA1+MD5 for handshake
4530 [Victor B. Wagner <vitus@cryptocom.ru>]
4532 *) Add RFC4507 support to OpenSSL. This includes the corrections in
4533 RFC4507bis. The encrypted ticket format is an encrypted encoded
4534 SSL_SESSION structure, that way new session features are automatically
4537 If a client application caches session in an SSL_SESSION structure
4538 support is transparent because tickets are now stored in the encoded
4541 The SSL_CTX structure automatically generates keys for ticket
4542 protection in servers so again support should be possible
4543 with no application modification.
4545 If a client or server wishes to disable RFC4507 support then the option
4546 SSL_OP_NO_TICKET can be set.
4548 Add a TLS extension debugging callback to allow the contents of any client
4549 or server extensions to be examined.
4551 This work was sponsored by Google.
4554 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
4555 OpenSSL should now compile cleanly on gcc 4.2
4556 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
4558 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
4559 support including streaming MAC support: this is required for GOST
4560 ciphersuite support.
4561 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
4563 *) Add option -stream to use PKCS#7 streaming in smime utility. New
4564 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
4565 to output in BER and PEM format.
4568 *) Experimental support for use of HMAC via EVP_PKEY interface. This
4569 allows HMAC to be handled via the EVP_DigestSign*() interface. The
4570 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
4571 ENGINE support for HMAC keys which are unextractable. New -mac and
4572 -macopt options to dgst utility.
4575 *) New option -sigopt to dgst utility. Update dgst to use
4576 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
4577 alternative signing parameters such as X9.31 or PSS in the dgst
4581 *) Change ssl_cipher_apply_rule(), the internal function that does
4582 the work each time a ciphersuite string requests enabling
4583 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
4584 removing ("!foo+bar") a class of ciphersuites: Now it maintains
4585 the order of disabled ciphersuites such that those ciphersuites
4586 that most recently went from enabled to disabled not only stay
4587 in order with respect to each other, but also have higher priority
4588 than other disabled ciphersuites the next time ciphersuites are
4591 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
4592 the same ciphersuites as with "HIGH" alone, but in a specific
4593 order where the PSK ciphersuites come first (since they are the
4594 most recently disabled ciphersuites when "HIGH" is parsed).
4596 Also, change ssl_create_cipher_list() (using this new
4597 functionality) such that between otherwise identical
4598 ciphersuites, ephemeral ECDH is preferred over ephemeral DH in
4602 *) Change ssl_create_cipher_list() so that it automatically
4603 arranges the ciphersuites in reasonable order before starting
4604 to process the rule string. Thus, the definition for "DEFAULT"
4605 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
4606 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
4607 This makes it much easier to arrive at a reasonable default order
4608 in applications for which anonymous ciphers are OK (meaning
4609 that you can't actually use DEFAULT).
4610 [Bodo Moeller; suggested by Victor Duchovni]
4612 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
4613 processing) into multiple integers instead of setting
4614 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
4615 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
4616 (These masks as well as the individual bit definitions are hidden
4617 away into the non-exported interface ssl/ssl_locl.h, so this
4618 change to the definition of the SSL_CIPHER structure shouldn't
4619 affect applications.) This give us more bits for each of these
4620 categories, so there is no longer a need to coagulate AES128 and
4621 AES256 into a single algorithm bit, and to coagulate Camellia128
4622 and Camellia256 into a single algorithm bit, which has led to all
4625 Thus, among other things, the kludge introduced in 0.9.7m and
4626 0.9.8e for masking out AES256 independently of AES128 or masking
4627 out Camellia256 independently of AES256 is not needed here in 0.9.9.
4629 With the change, we also introduce new ciphersuite aliases that
4630 so far were missing: "AES128", "AES256", "CAMELLIA128", and
4634 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
4635 Use the leftmost N bytes of the signature input if the input is
4636 larger than the prime q (with N being the size in bytes of q).
4639 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
4640 it yet and it is largely untested.
4643 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
4646 *) Initial incomplete changes to avoid need for function casts in OpenSSL
4647 some compilers (gcc 4.2 and later) reject their use. Safestack is
4648 reimplemented. Update ASN1 to avoid use of legacy functions.
4651 *) Win32/64 targets are linked with Winsock2.
4654 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
4655 to external functions. This can be used to increase CRL handling
4656 efficiency especially when CRLs are very large by (for example) storing
4657 the CRL revoked certificates in a database.
4660 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
4661 new CRLs added to a directory can be used. New command line option
4662 -verify_return_error to s_client and s_server. This causes real errors
4663 to be returned by the verify callback instead of carrying on no matter
4664 what. This reflects the way a "real world" verify callback would behave.
4667 *) GOST engine, supporting several GOST algorithms and public key formats.
4668 Kindly donated by Cryptocom.
4671 *) Partial support for Issuing Distribution Point CRL extension. CRLs
4672 partitioned by DP are handled but no indirect CRL or reason partitioning
4673 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
4674 selected via a scoring technique which handles IDP and AKID in CRLs.
4677 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
4678 will ultimately be used for all verify operations: this will remove the
4679 X509_STORE dependency on certificate verification and allow alternative
4680 lookup methods. X509_STORE based implementations of these two callbacks.
4683 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
4684 Modify get_crl() to find a valid (unexpired) CRL if possible.
4687 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
4688 this would be called X509_CRL_cmp() but that name is already used by
4689 a function that just compares CRL issuer names. Cache several CRL
4690 extensions in X509_CRL structure and cache CRLDP in X509.
4693 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
4694 this maps equivalent X509_NAME structures into a consistent structure.
4695 Name comparison can then be performed rapidly using memcmp().
4698 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
4702 *) Allow digests to supply their own micalg string for S/MIME type using
4703 the ctrl EVP_MD_CTRL_MICALG.
4706 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
4707 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
4708 ctrl. It can then customise the structure before and/or after signing
4712 *) New function OBJ_add_sigid() to allow application defined signature OIDs
4713 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
4714 to free up any added signature OIDs.
4717 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
4718 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
4719 digest and cipher tables. New options added to openssl utility:
4720 list-message-digest-algorithms and list-cipher-algorithms.
4723 *) Change the array representation of binary polynomials: the list
4724 of degrees of non-zero coefficients is now terminated with -1.
4725 Previously it was terminated with 0, which was also part of the
4726 value; thus, the array representation was not applicable to
4727 polynomials where t^0 has coefficient zero. This change makes
4728 the array representation useful in a more general context.
4731 *) Various modifications and fixes to SSL/TLS cipher string
4732 handling. For ECC, the code now distinguishes between fixed ECDH
4733 with RSA certificates on the one hand and with ECDSA certificates
4734 on the other hand, since these are separate ciphersuites. The
4735 unused code for Fortezza ciphersuites has been removed.
4737 For consistency with EDH, ephemeral ECDH is now called "EECDH"
4738 (not "ECDHE"). For consistency with the code for DH
4739 certificates, use of ECDH certificates is now considered ECDH
4740 authentication, not RSA or ECDSA authentication (the latter is
4741 merely the CA's signing algorithm and not actively used in the
4744 The temporary ciphersuite alias "ECCdraft" is no longer
4745 available, and ECC ciphersuites are no longer excluded from "ALL"
4746 and "DEFAULT". The following aliases now exist for RFC 4492
4747 ciphersuites, most of these by analogy with the DH case:
4749 kECDHr - ECDH cert, signed with RSA
4750 kECDHe - ECDH cert, signed with ECDSA
4751 kECDH - ECDH cert (signed with either RSA or ECDSA)
4752 kEECDH - ephemeral ECDH
4753 ECDH - ECDH cert or ephemeral ECDH
4759 AECDH - anonymous ECDH
4760 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
4764 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
4765 Use correct micalg parameters depending on digest(s) in signed message.
4768 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
4769 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
4772 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
4773 an engine to register a method. Add ENGINE lookups for methods and
4774 functional reference processing.
4777 *) New functions EVP_Digest{Sign,Verify)*. These are enhanced versions of
4778 EVP_{Sign,Verify}* which allow an application to customise the signature
4782 *) New -resign option to smime utility. This adds one or more signers
4783 to an existing PKCS#7 signedData structure. Also -md option to use an
4784 alternative message digest algorithm for signing.
4787 *) Tidy up PKCS#7 routines and add new functions to make it easier to
4788 create PKCS7 structures containing multiple signers. Update smime
4789 application to support multiple signers.
4792 *) New -macalg option to pkcs12 utility to allow setting of an alternative
4796 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
4797 Reorganize PBE internals to lookup from a static table using NIDs,
4798 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
4799 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
4800 PRF which will be automatically used with PBES2.
4803 *) Replace the algorithm specific calls to generate keys in "req" with the
4807 *) Update PKCS#7 enveloped data routines to use new API. This is now
4808 supported by any public key method supporting the encrypt operation. A
4809 ctrl is added to allow the public key algorithm to examine or modify
4810 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
4814 *) Add a ctrl to asn1 method to allow a public key algorithm to express
4815 a default digest type to use. In most cases this will be SHA1 but some
4816 algorithms (such as GOST) need to specify an alternative digest. The
4817 return value indicates how strong the preference is 1 means optional and
4818 2 is mandatory (that is it is the only supported type). Modify
4819 ASN1_item_sign() to accept a NULL digest argument to indicate it should
4820 use the default md. Update openssl utilities to use the default digest
4821 type for signing if it is not explicitly indicated.
4824 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
4825 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
4826 signing method from the key type. This effectively removes the link
4827 between digests and public key types.
4830 *) Add an OID cross reference table and utility functions. Its purpose is to
4831 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
4832 rsaEncryption. This will allow some of the algorithm specific hackery
4833 needed to use the correct OID to be removed.
4836 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
4837 structures for PKCS7_sign(). They are now set up by the relevant public
4841 *) Add provisional EC pkey method with support for ECDSA and ECDH.
4844 *) Add support for key derivation (agreement) in the API, DH method and
4848 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
4849 public and private key formats. As a side effect these add additional
4850 command line functionality not previously available: DSA signatures can be
4851 generated and verified using pkeyutl and DH key support and generation in
4856 [Oliver Tappe <zooey@hirschkaefer.de>]
4858 *) New make target "install_html_docs" installs HTML renditions of the
4860 [Oliver Tappe <zooey@hirschkaefer.de>]
4862 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
4863 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
4864 support key and parameter generation and add initial key generation
4865 functionality for RSA.
4868 *) Add functions for main EVP_PKEY_method operations. The undocumented
4869 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
4870 EVP_PKEY_{encrypt,decrypt}_old.
4873 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
4874 key API, doesn't do much yet.
4877 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
4878 public key algorithms. New option to openssl utility:
4879 "list-public-key-algorithms" to print out info.
4882 *) Implement the Supported Elliptic Curves Extension for
4883 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
4886 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
4887 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
4890 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
4891 utilities such as rsa, dsa, dsaparam etc except they process any key
4895 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
4896 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
4897 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
4901 *) Initial support for pluggable public key ASN1.
4902 De-spaghettify the public key ASN1 handling. Move public and private
4903 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
4904 algorithm specific handling to a single module within the relevant
4905 algorithm directory. Add functions to allow (near) opaque processing
4906 of public and private key structures.
4909 *) Implement the Supported Point Formats Extension for
4910 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
4913 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
4914 for the psk identity [hint] and the psk callback functions to the
4915 SSL_SESSION, SSL and SSL_CTX structure.
4918 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
4922 SSL_CTX_use_psk_identity_hint
4923 SSL_get_psk_identity_hint
4924 SSL_get_psk_identity
4925 SSL_use_psk_identity_hint
4927 [Mika Kousa and Pasi Eronen of Nokia Corporation]
4929 *) Add RFC 3161 compliant time stamp request creation, response generation
4930 and response verification functionality.
4931 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
4933 *) Add initial support for TLS extensions, specifically for the server_name
4934 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
4935 have new members for a host name. The SSL data structure has an
4936 additional member SSL_CTX *initial_ctx so that new sessions can be
4937 stored in that context to allow for session resumption, even after the
4938 SSL has been switched to a new SSL_CTX in reaction to a client's
4939 server_name extension.
4941 New functions (subject to change):
4943 SSL_get_servername()
4944 SSL_get_servername_type()
4947 New CTRL codes and macros (subject to change):
4949 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
4950 - SSL_CTX_set_tlsext_servername_callback()
4951 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
4952 - SSL_CTX_set_tlsext_servername_arg()
4953 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
4955 openssl s_client has a new '-servername ...' option.
4957 openssl s_server has new options '-servername_host ...', '-cert2 ...',
4958 '-key2 ...', '-servername_fatal' (subject to change). This allows
4959 testing the HostName extension for a specific single host name ('-cert'
4960 and '-key' remain fallbacks for handshakes without HostName
4961 negotiation). If the unrecognized_name alert has to be sent, this by
4962 default is a warning; it becomes fatal with the '-servername_fatal'
4965 [Peter Sylvester, Remy Allais, Christophe Renou]
4967 *) Whirlpool hash implementation is added.
4970 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
4971 bn(64,32). Because of instruction set limitations it doesn't have
4972 any negative impact on performance. This was done mostly in order
4973 to make it possible to share assembler modules, such as bn_mul_mont
4974 implementations, between 32- and 64-bit builds without hassle.
4977 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
4978 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
4982 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
4983 dedicated Montgomery multiplication procedure, is introduced.
4984 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
4985 "64-bit" performance on certain 32-bit targets.
4988 *) New option SSL_OP_NO_COMP to disable use of compression selectively
4989 in SSL structures. New SSL ctrl to set maximum send fragment size.
4990 Save memory by setting the I/O buffer sizes dynamically instead of
4991 using the maximum available value.
4994 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
4995 in addition to the text details.
4998 *) Very, very preliminary EXPERIMENTAL support for printing of general
4999 ASN1 structures. This currently produces rather ugly output and doesn't
5000 handle several customised structures at all.
5003 *) Integrated support for PVK file format and some related formats such
5004 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
5005 these in the 'rsa' and 'dsa' utilities.
5008 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
5011 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
5012 place for the (very old) "NETSCAPE" format certificates which are now
5013 handled using new ASN1 code equivalents.
5016 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
5017 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
5018 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
5021 *) Modify CRL distribution points extension code to print out previously
5022 unsupported fields. Enhance extension setting code to allow setting of
5026 *) Add print and set support for Issuing Distribution Point CRL extension.
5029 *) Change 'Configure' script to enable Camellia by default.
5032 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
5034 *) When rejecting SSL/TLS records due to an incorrect version number, never
5035 update s->server with a new major version number. As of
5036 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
5037 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
5038 the previous behavior could result in a read attempt at NULL when
5039 receiving specific incorrect SSL/TLS records once record payload
5040 protection is active. (CVE-2010-0740)
5041 [Bodo Moeller, Adam Langley <agl@chromium.org>]
5043 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
5044 could be crashed if the relevant tables were not present (e.g. chrooted).
5045 [Tomas Hoger <thoger@redhat.com>]
5047 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
5049 *) Always check bn_wexpand() return values for failure. (CVE-2009-3245)
5050 [Martin Olsson, Neel Mehta]
5052 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
5053 accommodate for stack sorting, always a write lock!).
5056 *) On some versions of WIN32 Heap32Next is very slow. This can cause
5057 excessive delays in the RAND_poll(): over a minute. As a workaround
5058 include a time check in the inner Heap32Next loop too.
5061 *) The code that handled flushing of data in SSL/TLS originally used the
5062 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
5063 the problem outlined in PR#1949. The fix suggested there however can
5064 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
5065 of Apache). So instead simplify the code to flush unconditionally.
5066 This should be fine since flushing with no data to flush is a no op.
5069 *) Handle TLS versions 2.0 and later properly and correctly use the
5070 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
5071 off ancient servers have a habit of sticking around for a while...
5074 *) Modify compression code so it frees up structures without using the
5075 ex_data callbacks. This works around a problem where some applications
5076 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
5077 restarting) then use compression (e.g. SSL with compression) later.
5078 This results in significant per-connection memory leaks and
5079 has caused some security issues including CVE-2008-1678 and
5083 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
5084 change when encrypting or decrypting.
5087 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
5088 connect and renegotiate with servers which do not support RI.
5089 Until RI is more widely deployed this option is enabled by default.
5092 *) Add "missing" ssl ctrls to clear options and mode.
5095 *) If client attempts to renegotiate and doesn't support RI respond with
5096 a no_renegotiation alert as required by RFC5746. Some renegotiating
5097 TLS clients will continue a connection gracefully when they receive
5098 the alert. Unfortunately OpenSSL mishandled this alert and would hang
5099 waiting for a server hello which it will never receive. Now we treat a
5100 received no_renegotiation alert as a fatal error. This is because
5101 applications requesting a renegotiation might well expect it to succeed
5102 and would have no code in place to handle the server denying it so the
5103 only safe thing to do is to terminate the connection.
5106 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
5107 peer supports secure renegotiation and 0 otherwise. Print out peer
5108 renegotiation support in s_client/s_server.
5111 *) Replace the highly broken and deprecated SPKAC certification method with
5112 the updated NID creation version. This should correctly handle UTF8.
5115 *) Implement RFC5746. Re-enable renegotiation but require the extension
5116 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
5117 turns out to be a bad idea. It has been replaced by
5118 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
5119 SSL_CTX_set_options(). This is really not recommended unless you
5120 know what you are doing.
5121 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
5123 *) Fixes to stateless session resumption handling. Use initial_ctx when
5124 issuing and attempting to decrypt tickets in case it has changed during
5125 servername handling. Use a non-zero length session ID when attempting
5126 stateless session resumption: this makes it possible to determine if
5127 a resumption has occurred immediately after receiving server hello
5128 (several places in OpenSSL subtly assume this) instead of later in
5132 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
5133 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
5134 fixes for a few places where the return code is not checked
5136 [Julia Lawall <julia@diku.dk>]
5138 *) Add --strict-warnings option to Configure script to include devteam
5139 warnings in other configurations.
5142 *) Add support for --libdir option and LIBDIR variable in makefiles. This
5143 makes it possible to install openssl libraries in locations which
5144 have names other than "lib", for example "/usr/lib64" which some
5146 [Steve Henson, based on patch from Jeremy Utley]
5148 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
5149 X690 8.9.12 and can produce some misleading textual output of OIDs.
5150 [Steve Henson, reported by Dan Kaminsky]
5152 *) Delete MD2 from algorithm tables. This follows the recommendation in
5153 several standards that it is not used in new applications due to
5154 several cryptographic weaknesses. For binary compatibility reasons
5155 the MD2 API is still compiled in by default.
5158 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
5162 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
5163 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
5165 [Guenter <lists@gknw.net>]
5167 *) Fix the server certificate chain building code to use X509_verify_cert(),
5168 it used to have an ad-hoc builder which was unable to cope with anything
5169 other than a simple chain.
5170 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
5172 *) Don't check self signed certificate signatures in X509_verify_cert()
5173 by default (a flag can override this): it just wastes time without
5174 adding any security. As a useful side effect self signed root CAs
5175 with non-FIPS digests are now usable in FIPS mode.
5178 *) In dtls1_process_out_of_seq_message() the check if the current message
5179 is already buffered was missing. For every new message was memory
5180 allocated, allowing an attacker to perform an denial of service attack
5181 with sending out of seq handshake messages until there is no memory
5182 left. Additionally every future message was buffered, even if the
5183 sequence number made no sense and would be part of another handshake.
5184 So only messages with sequence numbers less than 10 in advance will be
5185 buffered. (CVE-2009-1378)
5186 [Robin Seggelmann, discovered by Daniel Mentz]
5188 *) Records are buffered if they arrive with a future epoch to be
5189 processed after finishing the corresponding handshake. There is
5190 currently no limitation to this buffer allowing an attacker to perform
5191 a DOS attack with sending records with future epochs until there is no
5192 memory left. This patch adds the pqueue_size() function to determine
5193 the size of a buffer and limits the record buffer to 100 entries.
5195 [Robin Seggelmann, discovered by Daniel Mentz]
5197 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
5198 parent structure is freed. (CVE-2009-1379)
5201 *) Handle non-blocking I/O properly in SSL_shutdown() call.
5202 [Darryl Miles <darryl-mailinglists@netbauds.net>]
5205 [Ilya O. <vrghost@gmail.com>]
5207 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
5209 *) Disable renegotiation completely - this fixes a severe security
5210 problem (CVE-2009-3555) at the cost of breaking all
5211 renegotiation. Renegotiation can be re-enabled by setting
5212 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
5213 run-time. This is really not recommended unless you know what
5217 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
5219 *) Don't set val to NULL when freeing up structures, it is freed up by
5220 underlying code. If sizeof(void *) > sizeof(long) this can result in
5221 zeroing past the valid field. (CVE-2009-0789)
5222 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
5224 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
5225 checked correctly. This would allow some invalid signed attributes to
5226 appear to verify correctly. (CVE-2009-0591)
5227 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5229 *) Reject UniversalString and BMPString types with invalid lengths. This
5230 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
5231 a legal length. (CVE-2009-0590)
5234 *) Set S/MIME signing as the default purpose rather than setting it
5235 unconditionally. This allows applications to override it at the store
5239 *) Permit restricted recursion of ASN1 strings. This is needed in practice
5240 to handle some structures.
5243 *) Improve efficiency of mem_gets: don't search whole buffer each time
5245 [Jeremy Shapiro <jnshapir@us.ibm.com>]
5247 *) New -hex option for openssl rand.
5250 *) Print out UTF8String and NumericString when parsing ASN1.
5253 *) Support NumericString type for name components.
5256 *) Allow CC in the environment to override the automatically chosen
5257 compiler. Note that nothing is done to ensure flags work with the
5261 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
5263 *) Properly check EVP_VerifyFinal() and similar return values
5265 [Ben Laurie, Bodo Moeller, Google Security Team]
5267 *) Enable TLS extensions by default.
5270 *) Allow the CHIL engine to be loaded, whether the application is
5271 multithreaded or not. (This does not release the developer from the
5272 obligation to set up the dynamic locking callbacks.)
5273 [Sander Temme <sander@temme.net>]
5275 *) Use correct exit code if there is an error in dgst command.
5276 [Steve Henson; problem pointed out by Roland Dirlewanger]
5278 *) Tweak Configure so that you need to say "experimental-jpake" to enable
5279 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
5282 *) Add experimental JPAKE support, including demo authentication in
5283 s_client and s_server.
5286 *) Set the comparison function in v3_addr_canonize().
5287 [Rob Austein <sra@hactrn.net>]
5289 *) Add support for XMPP STARTTLS in s_client.
5290 [Philip Paeps <philip@freebsd.org>]
5292 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
5293 to ensure that even with this option, only ciphersuites in the
5294 server's preference list will be accepted. (Note that the option
5295 applies only when resuming a session, so the earlier behavior was
5296 just about the algorithm choice for symmetric cryptography.)
5299 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
5301 *) Fix NULL pointer dereference if a DTLS server received
5302 ChangeCipherSpec as first record (CVE-2009-1386).
5305 *) Fix a state transition in s3_srvr.c and d1_srvr.c
5306 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
5309 *) The fix in 0.9.8c that supposedly got rid of unsafe
5310 double-checked locking was incomplete for RSA blinding,
5311 addressing just one layer of what turns out to have been
5312 doubly unsafe triple-checked locking.
5314 So now fix this for real by retiring the MONT_HELPER macro
5315 in crypto/rsa/rsa_eay.c.
5317 [Bodo Moeller; problem pointed out by Marius Schilder]
5319 *) Various precautionary measures:
5321 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
5323 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
5324 (NB: This would require knowledge of the secret session ticket key
5325 to exploit, in which case you'd be SOL either way.)
5327 - Change bn_nist.c so that it will properly handle input BIGNUMs
5328 outside the expected range.
5330 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
5333 [Neel Mehta, Bodo Moeller]
5335 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
5336 the load fails. Useful for distros.
5337 [Ben Laurie and the FreeBSD team]
5339 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
5342 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
5345 *) Expand ENGINE to support engine supplied SSL client certificate functions.
5347 This work was sponsored by Logica.
5350 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
5351 keystores. Support for SSL/TLS client authentication too.
5352 Not compiled unless enable-capieng specified to Configure.
5354 This work was sponsored by Logica.
5357 *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using
5358 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
5359 attribute creation routines such as certificate requests and PKCS#12
5363 Changes between 0.9.8g and 0.9.8h [28 May 2008]
5365 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
5366 handshake which could lead to a client crash as found using the
5367 Codenomicon TLS test suite (CVE-2008-1672)
5368 [Steve Henson, Mark Cox]
5370 *) Fix double free in TLS server name extensions which could lead to
5371 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
5374 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
5376 Clear the error queue to ensure that error entries left from
5377 older function calls do not interfere with the correct operation.
5378 [Lutz Jaenicke, Erik de Castro Lopo]
5380 *) Remove root CA certificates of commercial CAs:
5382 The OpenSSL project does not recommend any specific CA and does not
5383 have any policy with respect to including or excluding any CA.
5384 Therefore it does not make any sense to ship an arbitrary selection
5385 of root CA certificates with the OpenSSL software.
5388 *) RSA OAEP patches to fix two separate invalid memory reads.
5389 The first one involves inputs when 'lzero' is greater than
5390 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
5391 before the beginning of from). The second one involves inputs where
5392 the 'db' section contains nothing but zeroes (there is a one-byte
5393 invalid read after the end of 'db').
5394 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5396 *) Partial backport from 0.9.9-dev:
5398 Introduce bn_mul_mont (dedicated Montgomery multiplication
5399 procedure) as a candidate for BIGNUM assembler implementation.
5400 While 0.9.9-dev uses assembler for various architectures, only
5401 x86_64 is available by default here in the 0.9.8 branch, and
5402 32-bit x86 is available through a compile-time setting.
5404 To try the 32-bit x86 assembler implementation, use Configure
5405 option "enable-montasm" (which exists only for this backport).
5407 As "enable-montasm" for 32-bit x86 disclaims code stability
5408 anyway, in this constellation we activate additional code
5409 backported from 0.9.9-dev for further performance improvements,
5410 namely BN_from_montgomery_word. (To enable this otherwise,
5411 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
5413 [Andy Polyakov (backport partially by Bodo Moeller)]
5415 *) Add TLS session ticket callback. This allows an application to set
5416 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
5417 values. This is useful for key rollover for example where several key
5418 sets may exist with different names.
5421 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
5422 This was broken until now in 0.9.8 releases, such that the only way
5423 a registered ENGINE could be used (assuming it initialises
5424 successfully on the host) was to explicitly set it as the default
5425 for the relevant algorithms. This is in contradiction with 0.9.7
5426 behaviour and the documentation. With this fix, when an ENGINE is
5427 registered into a given algorithm's table of implementations, the
5428 'uptodate' flag is reset so that auto-discovery will be used next
5429 time a new context for that algorithm attempts to select an
5431 [Ian Lister (tweaked by Geoff Thorpe)]
5433 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
5434 implementation in the following ways:
5436 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
5439 Lack of BER streaming support means one pass streaming processing is
5440 only supported if data is detached: setting the streaming flag is
5441 ignored for embedded content.
5443 CMS support is disabled by default and must be explicitly enabled
5444 with the enable-cms configuration option.
5447 *) Update the GMP engine glue to do direct copies between BIGNUM and
5448 mpz_t when openssl and GMP use the same limb size. Otherwise the
5449 existing "conversion via a text string export" trick is still used.
5450 [Paul Sheer <paulsheer@gmail.com>]
5452 *) Zlib compression BIO. This is a filter BIO which compressed and
5453 uncompresses any data passed through it.
5456 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
5457 RFC3394 compatible AES key wrapping.
5460 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
5461 sets string data without copying. X509_ALGOR_set0() and
5462 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
5463 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
5464 from an X509_ATTRIBUTE structure optionally checking it occurs only
5465 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
5469 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
5470 to get the expected BN_FLG_CONSTTIME behavior.
5471 [Bodo Moeller (Google)]
5475 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
5476 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
5477 - added some more tests to do_tests.pl
5478 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
5479 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
5480 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
5481 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
5482 - various changes to netware.pl to enable gcc-cross builds on Win32
5484 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
5485 - various changes to fix missing prototype warnings
5486 - fixed x86nasm.pl to create correct asm files for NASM COFF output
5487 - added AES, WHIRLPOOL and CPUID assembler code to build files
5488 - added missing AES assembler make rules to mk1mf.pl
5489 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
5490 [Guenter Knauf <eflash@gmx.net>]
5492 *) Implement certificate status request TLS extension defined in RFC3546.
5493 A client can set the appropriate parameters and receive the encoded
5494 OCSP response via a callback. A server can query the supplied parameters
5495 and set the encoded OCSP response in the callback. Add simplified examples
5496 to s_client and s_server.
5499 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
5501 *) Fix various bugs:
5502 + Binary incompatibility of ssl_ctx_st structure
5503 + DTLS interoperation with non-compliant servers
5504 + Don't call get_session_cb() without proposed session
5505 + Fix ia64 assembler code
5506 [Andy Polyakov, Steve Henson]
5508 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
5510 *) DTLS Handshake overhaul. There were longstanding issues with
5511 OpenSSL DTLS implementation, which were making it impossible for
5512 RFC 4347 compliant client to communicate with OpenSSL server.
5513 Unfortunately just fixing these incompatibilities would "cut off"
5514 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
5515 server keeps tolerating non RFC compliant syntax. The opposite is
5516 not true, 0.9.8f client can not communicate with earlier server.
5517 This update even addresses CVE-2007-4995.
5520 *) Changes to avoid need for function casts in OpenSSL: some compilers
5521 (gcc 4.2 and later) reject their use.
5522 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
5525 *) Add RFC4507 support to OpenSSL. This includes the corrections in
5526 RFC4507bis. The encrypted ticket format is an encrypted encoded
5527 SSL_SESSION structure, that way new session features are automatically
5530 If a client application caches session in an SSL_SESSION structure
5531 support is transparent because tickets are now stored in the encoded
5534 The SSL_CTX structure automatically generates keys for ticket
5535 protection in servers so again support should be possible
5536 with no application modification.
5538 If a client or server wishes to disable RFC4507 support then the option
5539 SSL_OP_NO_TICKET can be set.
5541 Add a TLS extension debugging callback to allow the contents of any client
5542 or server extensions to be examined.
5544 This work was sponsored by Google.
5547 *) Add initial support for TLS extensions, specifically for the server_name
5548 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5549 have new members for a host name. The SSL data structure has an
5550 additional member SSL_CTX *initial_ctx so that new sessions can be
5551 stored in that context to allow for session resumption, even after the
5552 SSL has been switched to a new SSL_CTX in reaction to a client's
5553 server_name extension.
5555 New functions (subject to change):
5557 SSL_get_servername()
5558 SSL_get_servername_type()
5561 New CTRL codes and macros (subject to change):
5563 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5564 - SSL_CTX_set_tlsext_servername_callback()
5565 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5566 - SSL_CTX_set_tlsext_servername_arg()
5567 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5569 openssl s_client has a new '-servername ...' option.
5571 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5572 '-key2 ...', '-servername_fatal' (subject to change). This allows
5573 testing the HostName extension for a specific single host name ('-cert'
5574 and '-key' remain fallbacks for handshakes without HostName
5575 negotiation). If the unrecognized_name alert has to be sent, this by
5576 default is a warning; it becomes fatal with the '-servername_fatal'
5579 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
5581 *) Add AES and SSE2 assembly language support to VC++ build.
5584 *) Mitigate attack on final subtraction in Montgomery reduction.
5587 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
5588 (which previously caused an internal error).
5591 *) Squeeze another 10% out of IGE mode when in != out.
5594 *) AES IGE mode speedup.
5595 [Dean Gaudet (Google)]
5597 *) Add the Korean symmetric 128-bit cipher SEED (see
5598 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
5599 add SEED ciphersuites from RFC 4162:
5601 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
5602 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
5603 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
5604 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
5606 To minimize changes between patchlevels in the OpenSSL 0.9.8
5607 series, SEED remains excluded from compilation unless OpenSSL
5608 is configured with 'enable-seed'.
5609 [KISA, Bodo Moeller]
5611 *) Mitigate branch prediction attacks, which can be practical if a
5612 single processor is shared, allowing a spy process to extract
5613 information. For detailed background information, see
5614 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
5615 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
5616 and Necessary Software Countermeasures"). The core of the change
5617 are new versions BN_div_no_branch() and
5618 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
5619 respectively, which are slower, but avoid the security-relevant
5620 conditional branches. These are automatically called by BN_div()
5621 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
5622 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
5623 remove a conditional branch.
5625 BN_FLG_CONSTTIME is the new name for the previous
5626 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
5627 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
5628 in the exponent causes BN_mod_exp_mont() to use the alternative
5629 implementation in BN_mod_exp_mont_consttime().) The old name
5630 remains as a deprecated alias.
5632 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
5633 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
5634 constant-time implementations for more than just exponentiation.
5635 Here too the old name is kept as a deprecated alias.
5637 BN_BLINDING_new() will now use BN_dup() for the modulus so that
5638 the BN_BLINDING structure gets an independent copy of the
5639 modulus. This means that the previous "BIGNUM *m" argument to
5640 BN_BLINDING_new() and to BN_BLINDING_create_param() now
5641 essentially becomes "const BIGNUM *m", although we can't actually
5642 change this in the header file before 0.9.9. It allows
5643 RSA_setup_blinding() to use BN_with_flags() on the modulus to
5644 enable BN_FLG_CONSTTIME.
5646 [Matthew D Wood (Intel Corp)]
5648 *) In the SSL/TLS server implementation, be strict about session ID
5649 context matching (which matters if an application uses a single
5650 external cache for different purposes). Previously,
5651 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
5652 set. This did ensure strict client verification, but meant that,
5653 with applications using a single external cache for quite
5654 different requirements, clients could circumvent ciphersuite
5655 restrictions for a given session ID context by starting a session
5656 in a different context.
5659 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
5660 a ciphersuite string such as "DEFAULT:RSA" cannot enable
5661 authentication-only ciphersuites.
5664 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
5665 not complete and could lead to a possible single byte overflow
5666 (CVE-2007-5135) [Ben Laurie]
5668 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
5670 *) Since AES128 and AES256 (and similarly Camellia128 and
5671 Camellia256) share a single mask bit in the logic of
5672 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
5673 kludge to work properly if AES128 is available and AES256 isn't
5674 (or if Camellia128 is available and Camellia256 isn't).
5677 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
5678 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
5679 When a point or a seed is encoded in a BIT STRING, we need to
5680 prevent the removal of trailing zero bits to get the proper DER
5681 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
5682 of a NamedBitList, for which trailing 0 bits need to be removed.)
5685 *) Have SSL/TLS server implementation tolerate "mismatched" record
5686 protocol version while receiving ClientHello even if the
5687 ClientHello is fragmented. (The server can't insist on the
5688 particular protocol version it has chosen before the ServerHello
5689 message has informed the client about his choice.)
5692 *) Add RFC 3779 support.
5693 [Rob Austein for ARIN, Ben Laurie]
5695 *) Load error codes if they are not already present instead of using a
5696 static variable. This allows them to be cleanly unloaded and reloaded.
5697 Improve header file function name parsing.
5700 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
5701 or CAPABILITY handshake as required by RFCs.
5704 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
5706 *) Introduce limits to prevent malicious keys being able to
5707 cause a denial of service. (CVE-2006-2940)
5708 [Steve Henson, Bodo Moeller]
5710 *) Fix ASN.1 parsing of certain invalid structures that can result
5711 in a denial of service. (CVE-2006-2937) [Steve Henson]
5713 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
5714 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
5716 *) Fix SSL client code which could crash if connecting to a
5717 malicious SSLv2 server. (CVE-2006-4343)
5718 [Tavis Ormandy and Will Drewry, Google Security Team]
5720 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
5721 match only those. Before that, "AES256-SHA" would be interpreted
5722 as a pattern and match "AES128-SHA" too (since AES128-SHA got
5723 the same strength classification in 0.9.7h) as we currently only
5724 have a single AES bit in the ciphersuite description bitmap.
5725 That change, however, also applied to ciphersuite strings such as
5726 "RC4-MD5" that intentionally matched multiple ciphersuites --
5727 namely, SSL 2.0 ciphersuites in addition to the more common ones
5728 from SSL 3.0/TLS 1.0.
5730 So we change the selection algorithm again: Naming an explicit
5731 ciphersuite selects this one ciphersuite, and any other similar
5732 ciphersuite (same bitmap) from *other* protocol versions.
5733 Thus, "RC4-MD5" again will properly select both the SSL 2.0
5734 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
5736 Since SSL 2.0 does not have any ciphersuites for which the
5737 128/256 bit distinction would be relevant, this works for now.
5738 The proper fix will be to use different bits for AES128 and
5739 AES256, which would have avoided the problems from the beginning;
5740 however, bits are scarce, so we can only do this in a new release
5741 (not just a patchlevel) when we can change the SSL_CIPHER
5742 definition to split the single 'unsigned long mask' bitmap into
5743 multiple values to extend the available space.
5747 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
5749 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
5750 (CVE-2006-4339) [Ben Laurie and Google Security Team]
5752 *) Add AES IGE and biIGE modes.
5755 *) Change the Unix randomness entropy gathering to use poll() when
5756 possible instead of select(), since the latter has some
5757 undesirable limitations.
5758 [Darryl Miles via Richard Levitte and Bodo Moeller]
5760 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
5761 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
5762 cannot be implicitly activated as part of, e.g., the "AES" alias.
5763 However, please upgrade to OpenSSL 0.9.9[-dev] for
5764 non-experimental use of the ECC ciphersuites to get TLS extension
5765 support, which is required for curve and point format negotiation
5766 to avoid potential handshake problems.
5769 *) Disable rogue ciphersuites:
5771 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
5772 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
5773 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
5775 The latter two were purportedly from
5776 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
5779 Also deactivate the remaining ciphersuites from
5780 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
5781 unofficial, and the ID has long expired.
5784 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
5785 dual-core machines) and other potential thread-safety issues.
5788 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
5789 versions), which is now available for royalty-free use
5790 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
5791 Also, add Camellia TLS ciphersuites from RFC 4132.
5793 To minimize changes between patchlevels in the OpenSSL 0.9.8
5794 series, Camellia remains excluded from compilation unless OpenSSL
5795 is configured with 'enable-camellia'.
5798 *) Disable the padding bug check when compression is in use. The padding
5799 bug check assumes the first packet is of even length, this is not
5800 necessarily true if compression is enabled and can result in false
5801 positives causing handshake failure. The actual bug test is ancient
5802 code so it is hoped that implementations will either have fixed it by
5803 now or any which still have the bug do not support compression.
5806 Changes between 0.9.8a and 0.9.8b [04 May 2006]
5808 *) When applying a cipher rule check to see if string match is an explicit
5809 cipher suite and only match that one cipher suite if it is.
5812 *) Link in manifests for VC++ if needed.
5813 [Austin Ziegler <halostatue@gmail.com>]
5815 *) Update support for ECC-based TLS ciphersuites according to
5816 draft-ietf-tls-ecc-12.txt with proposed changes (but without
5817 TLS extensions, which are supported starting with the 0.9.9
5818 branch, not in the OpenSSL 0.9.8 branch).
5821 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
5822 opaque EVP_CIPHER_CTX handling.
5825 *) Fixes and enhancements to zlib compression code. We now only use
5826 "zlib1.dll" and use the default __cdecl calling convention on Win32
5827 to conform with the standards mentioned here:
5828 http://www.zlib.net/DLL_FAQ.txt
5829 Static zlib linking now works on Windows and the new --with-zlib-include
5830 --with-zlib-lib options to Configure can be used to supply the location
5831 of the headers and library. Gracefully handle case where zlib library
5835 *) Several fixes and enhancements to the OID generation code. The old code
5836 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
5837 handle numbers larger than ULONG_MAX, truncated printing and had a
5838 non standard OBJ_obj2txt() behaviour.
5841 *) Add support for building of engines under engine/ as shared libraries
5842 under VC++ build system.
5845 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
5846 Hopefully, we will not see any false combination of paths any more.
5849 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
5851 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
5852 (part of SSL_OP_ALL). This option used to disable the
5853 countermeasure against man-in-the-middle protocol-version
5854 rollback in the SSL 2.0 server implementation, which is a bad
5855 idea. (CVE-2005-2969)
5857 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
5858 for Information Security, National Institute of Advanced Industrial
5859 Science and Technology [AIST], Japan)]
5861 *) Add two function to clear and return the verify parameter flags.
5864 *) Keep cipherlists sorted in the source instead of sorting them at
5865 runtime, thus removing the need for a lock.
5868 *) Avoid some small subgroup attacks in Diffie-Hellman.
5869 [Nick Mathewson and Ben Laurie]
5871 *) Add functions for well-known primes.
5874 *) Extended Windows CE support.
5875 [Satoshi Nakamura and Andy Polyakov]
5877 *) Initialize SSL_METHOD structures at compile time instead of during
5878 runtime, thus removing the need for a lock.
5881 *) Make PKCS7_decrypt() work even if no certificate is supplied by
5882 attempting to decrypt each encrypted key in turn. Add support to
5886 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
5888 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
5891 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
5894 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
5895 key into the same file any more.
5898 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
5901 *) Add -utf8 command line and config file option to 'ca'.
5902 [Stefan <stf@udoma.org]
5904 *) Removed the macro des_crypt(), as it seems to conflict with some
5905 libraries. Use DES_crypt().
5908 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
5909 involves renaming the source and generated shared-libs for
5910 both. The engines will accept the corrected or legacy ids
5911 ('ncipher' and '4758_cca' respectively) when binding. NB,
5912 this only applies when building 'shared'.
5913 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
5915 *) Add attribute functions to EVP_PKEY structure. Modify
5916 PKCS12_create() to recognize a CSP name attribute and
5917 use it. Make -CSP option work again in pkcs12 utility.
5920 *) Add new functionality to the bn blinding code:
5921 - automatic re-creation of the BN_BLINDING parameters after
5922 a fixed number of uses (currently 32)
5923 - add new function for parameter creation
5924 - introduce flags to control the update behaviour of the
5925 BN_BLINDING parameters
5926 - hide BN_BLINDING structure
5927 Add a second BN_BLINDING slot to the RSA structure to improve
5928 performance when a single RSA object is shared among several
5932 *) Add support for DTLS.
5933 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
5935 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
5936 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
5939 *) Remove buggy and incomplete DH cert support from
5940 ssl/ssl_rsa.c and ssl/s3_both.c
5943 *) Use SHA-1 instead of MD5 as the default digest algorithm for
5944 the apps/openssl applications.
5947 *) Compile clean with "-Wall -Wmissing-prototypes
5948 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
5949 DEBUG_SAFESTACK must also be set.
5952 *) Change ./Configure so that certain algorithms can be disabled by default.
5953 The new counterpiece to "no-xxx" is "enable-xxx".
5955 The patented RC5 and MDC2 algorithms will now be disabled unless
5956 "enable-rc5" and "enable-mdc2", respectively, are specified.
5958 (IDEA remains enabled despite being patented. This is because IDEA
5959 is frequently required for interoperability, and there is no license
5960 fee for non-commercial use. As before, "no-idea" can be used to
5961 avoid this algorithm.)
5965 *) Add processing of proxy certificates (see RFC 3820). This work was
5966 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
5967 EGEE (Enabling Grids for E-science in Europe).
5970 *) RC4 performance overhaul on modern architectures/implementations, such
5971 as Intel P4, IA-64 and AMD64.
5974 *) New utility extract-section.pl. This can be used specify an alternative
5975 section number in a pod file instead of having to treat each file as
5976 a separate case in Makefile. This can be done by adding two lines to the
5979 =for comment openssl_section:XXX
5981 The blank line is mandatory.
5985 *) New arguments -certform, -keyform and -pass for s_client and s_server
5986 to allow alternative format key and certificate files and passphrase
5990 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
5991 update associated structures and add various utility functions.
5993 Add new policy related verify parameters, include policy checking in
5994 standard verify code. Enhance 'smime' application with extra parameters
5995 to support policy checking and print out.
5998 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
5999 Nehemiah processors. These extensions support AES encryption in hardware
6000 as well as RNG (though RNG support is currently disabled).
6001 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
6003 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
6006 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
6007 [Andy Polyakov and a number of other people]
6009 *) Improved PowerPC platform support. Most notably BIGNUM assembler
6010 implementation contributed by IBM.
6011 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
6013 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
6014 exponent rather than 'unsigned long'. There is a corresponding change to
6015 the new 'rsa_keygen' element of the RSA_METHOD structure.
6016 [Jelte Jansen, Geoff Thorpe]
6018 *) Functionality for creating the initial serial number file is now
6019 moved from CA.pl to the 'ca' utility with a new option -create_serial.
6021 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
6022 number file to 1, which is bound to cause problems. To avoid
6023 the problems while respecting compatibility between different 0.9.7
6024 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
6025 CA.pl for serial number initialization. With the new release 0.9.8,
6026 we can fix the problem directly in the 'ca' utility.)
6029 *) Reduced header interdependencies by declaring more opaque objects in
6030 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
6031 give fewer recursive includes, which could break lazy source code - so
6032 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
6033 developers should define this symbol when building and using openssl to
6034 ensure they track the recommended behaviour, interfaces, [etc], but
6035 backwards-compatible behaviour prevails when this isn't defined.
6038 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
6041 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
6042 This will generate a random key of the appropriate length based on the
6043 cipher context. The EVP_CIPHER can provide its own random key generation
6044 routine to support keys of a specific form. This is used in the des and
6045 3des routines to generate a key of the correct parity. Update S/MIME
6046 code to use new functions and hence generate correct parity DES keys.
6047 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
6048 valid (weak or incorrect parity).
6051 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
6052 as looking them up. This is useful when the verified structure may contain
6053 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
6054 present unless the new PKCS7_NO_CRL flag is asserted.
6057 *) Extend ASN1 oid configuration module. It now additionally accepts the
6060 shortName = some long name, 1.2.3.4
6063 *) Reimplemented the BN_CTX implementation. There is now no more static
6064 limitation on the number of variables it can handle nor the depth of the
6065 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
6066 information can now expand as required, and rather than having a single
6067 static array of bignums, BN_CTX now uses a linked-list of such arrays
6068 allowing it to expand on demand whilst maintaining the usefulness of
6069 BN_CTX's "bundling".
6072 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
6073 to allow all RSA operations to function using a single BN_CTX.
6076 *) Preliminary support for certificate policy evaluation and checking. This
6077 is initially intended to pass the tests outlined in "Conformance Testing
6078 of Relying Party Client Certificate Path Processing Logic" v1.07.
6081 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
6082 remained unused and not that useful. A variety of other little bignum
6083 tweaks and fixes have also been made continuing on from the audit (see
6087 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
6088 associated ASN1, EVP and SSL functions and old ASN1 macros.
6091 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
6092 and this should never fail. So the return value from the use of
6093 BN_set_word() (which can fail due to needless expansion) is now deprecated;
6094 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
6097 *) BN_CTX_get() should return zero-valued bignums, providing the same
6098 initialised value as BN_new().
6099 [Geoff Thorpe, suggested by Ulf Möller]
6101 *) Support for inhibitAnyPolicy certificate extension.
6104 *) An audit of the BIGNUM code is underway, for which debugging code is
6105 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
6106 is considered valid when processing BIGNUMs, and causes execution to
6107 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
6108 further steps are taken to deliberately pollute unused data in BIGNUM
6109 structures to try and expose faulty code further on. For now, openssl will
6110 (in its default mode of operation) continue to tolerate the inconsistent
6111 forms that it has tolerated in the past, but authors and packagers should
6112 consider trying openssl and their own applications when compiled with
6113 these debugging symbols defined. It will help highlight potential bugs in
6114 their own code, and will improve the test coverage for OpenSSL itself. At
6115 some point, these tighter rules will become openssl's default to improve
6116 maintainability, though the assert()s and other overheads will remain only
6117 in debugging configurations. See bn.h for more details.
6118 [Geoff Thorpe, Nils Larsch, Ulf Möller]
6120 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
6121 that can only be obtained through BN_CTX_new() (which implicitly
6122 initialises it). The presence of this function only made it possible
6123 to overwrite an existing structure (and cause memory leaks).
6126 *) Because of the callback-based approach for implementing LHASH as a
6127 template type, lh_insert() adds opaque objects to hash-tables and
6128 lh_doall() or lh_doall_arg() are typically used with a destructor callback
6129 to clean up those corresponding objects before destroying the hash table
6130 (and losing the object pointers). So some over-zealous constifications in
6131 LHASH have been relaxed so that lh_insert() does not take (nor store) the
6132 objects as "const" and the lh_doall[_arg] callback wrappers are not
6133 prototyped to have "const" restrictions on the object pointers they are
6134 given (and so aren't required to cast them away any more).
6137 *) The tmdiff.h API was so ugly and minimal that our own timing utility
6138 (speed) prefers to use its own implementation. The two implementations
6139 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
6140 its object type properly exposed (MS_TM) instead of casting to/from "char
6141 *". This may still change yet if someone realises MS_TM and "ms_time_***"
6142 aren't necessarily the greatest nomenclatures - but this is what was used
6143 internally to the implementation so I've used that for now.
6146 *) Ensure that deprecated functions do not get compiled when
6147 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
6148 the self-tests were still using deprecated key-generation functions so
6149 these have been updated also.
6152 *) Reorganise PKCS#7 code to separate the digest location functionality
6153 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
6154 New function PKCS7_set_digest() to set the digest type for PKCS#7
6155 digestedData type. Add additional code to correctly generate the
6156 digestedData type and add support for this type in PKCS7 initialization
6160 *) New function PKCS7_set0_type_other() this initializes a PKCS7
6161 structure of type "other".
6164 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
6165 sure the loop does correctly stop and breaking ("division by zero")
6166 modulus operations are not performed. The (pre-generated) prime
6167 table crypto/bn/bn_prime.h was already correct, but it could not be
6168 re-generated on some platforms because of the "division by zero"
6169 situation in the script.
6170 [Ralf S. Engelschall]
6172 *) Update support for ECC-based TLS ciphersuites according to
6173 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
6174 SHA-1 now is only used for "small" curves (where the
6175 representation of a field element takes up to 24 bytes); for
6176 larger curves, the field element resulting from ECDH is directly
6177 used as premaster secret.
6178 [Douglas Stebila (Sun Microsystems Laboratories)]
6180 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
6181 curve secp160r1 to the tests.
6182 [Douglas Stebila (Sun Microsystems Laboratories)]
6184 *) Add the possibility to load symbols globally with DSO.
6185 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
6187 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
6188 control of the error stack.
6191 *) Add support for STORE in ENGINE.
6194 *) Add the STORE type. The intention is to provide a common interface
6195 to certificate and key stores, be they simple file-based stores, or
6196 HSM-type store, or LDAP stores, or...
6197 NOTE: The code is currently UNTESTED and isn't really used anywhere.
6200 *) Add a generic structure called OPENSSL_ITEM. This can be used to
6201 pass a list of arguments to any function as well as provide a way
6202 for a function to pass data back to the caller.
6205 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
6206 works like BUF_strdup() but can be used to duplicate a portion of
6207 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
6211 *) Add the function sk_find_ex() which works like sk_find(), but will
6212 return an index to an element even if an exact match couldn't be
6213 found. The index is guaranteed to point at the element where the
6214 searched-for key would be inserted to preserve sorting order.
6217 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
6218 takes an extra flags argument for optional functionality. Currently,
6219 the following flags are defined:
6221 OBJ_BSEARCH_VALUE_ON_NOMATCH
6222 This one gets OBJ_bsearch_ex() to return a pointer to the first
6223 element where the comparing function returns a negative or zero
6226 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
6227 This one gets OBJ_bsearch_ex() to return a pointer to the first
6228 element where the comparing function returns zero. This is useful
6229 if there are more than one element where the comparing function
6233 *) Make it possible to create self-signed certificates with 'openssl ca'
6234 in such a way that the self-signed certificate becomes part of the
6235 CA database and uses the same mechanisms for serial number generation
6236 as all other certificate signing. The new flag '-selfsign' enables
6237 this functionality. Adapt CA.sh and CA.pl.in.
6240 *) Add functionality to check the public key of a certificate request
6241 against a given private. This is useful to check that a certificate
6242 request can be signed by that key (self-signing).
6245 *) Make it possible to have multiple active certificates with the same
6246 subject in the CA index file. This is done only if the keyword
6247 'unique_subject' is set to 'no' in the main CA section (default
6248 if 'CA_default') of the configuration file. The value is saved
6249 with the database itself in a separate index attribute file,
6250 named like the index file with '.attr' appended to the name.
6253 *) Generate multi-valued AVAs using '+' notation in config files for
6257 *) Support for nameConstraints certificate extension.
6260 *) Support for policyConstraints certificate extension.
6263 *) Support for policyMappings certificate extension.
6266 *) Make sure the default DSA_METHOD implementation only uses its
6267 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
6268 and change its own handlers to be NULL so as to remove unnecessary
6269 indirection. This lets alternative implementations fallback to the
6270 default implementation more easily.
6273 *) Support for directoryName in GeneralName related extensions
6277 *) Make it possible to link applications using Makefile.shared.
6278 Make that possible even when linking against static libraries!
6281 *) Support for single pass processing for S/MIME signing. This now
6282 means that S/MIME signing can be done from a pipe, in addition
6283 cleartext signing (multipart/signed type) is effectively streaming
6284 and the signed data does not need to be all held in memory.
6286 This is done with a new flag PKCS7_STREAM. When this flag is set
6287 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
6288 is done after the data is output (and digests calculated) in
6289 SMIME_write_PKCS7().
6292 *) Add full support for -rpath/-R, both in shared libraries and
6293 applications, at least on the platforms where it's known how
6297 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
6298 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
6299 will now compute a table of multiples of the generator that
6300 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
6301 faster (notably in the case of a single point multiplication,
6302 scalar * generator).
6303 [Nils Larsch, Bodo Moeller]
6305 *) IPv6 support for certificate extensions. The various extensions
6306 which use the IP:a.b.c.d can now take IPv6 addresses using the
6307 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
6311 *) Added an ENGINE that implements RSA by performing private key
6312 exponentiations with the GMP library. The conversions to and from
6313 GMP's mpz_t format aren't optimised nor are any montgomery forms
6314 cached, and on x86 it appears OpenSSL's own performance has caught up.
6315 However there are likely to be other architectures where GMP could
6316 provide a boost. This ENGINE is not built in by default, but it can be
6317 specified at Configure time and should be accompanied by the necessary
6318 linker additions, eg;
6319 ./config -DOPENSSL_USE_GMP -lgmp
6322 *) "openssl engine" will not display ENGINE/DSO load failure errors when
6323 testing availability of engines with "-t" - the old behaviour is
6324 produced by increasing the feature's verbosity with "-tt".
6327 *) ECDSA routines: under certain error conditions uninitialized BN objects
6328 could be freed. Solution: make sure initialization is performed early
6329 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
6333 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
6334 and DH_METHOD (eg. by ENGINE implementations) to override the normal
6335 software implementations. For DSA and DH, parameter generation can
6336 also be overridden by providing the appropriate method callbacks.
6339 *) Change the "progress" mechanism used in key-generation and
6340 primality testing to functions that take a new BN_GENCB pointer in
6341 place of callback/argument pairs. The new API functions have "_ex"
6342 postfixes and the older functions are reimplemented as wrappers for
6343 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
6344 declarations of the old functions to help (graceful) attempts to
6345 migrate to the new functions. Also, the new key-generation API
6346 functions operate on a caller-supplied key-structure and return
6347 success/failure rather than returning a key or NULL - this is to
6348 help make "keygen" another member function of RSA_METHOD etc.
6350 Example for using the new callback interface:
6352 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
6356 BN_GENCB_set(&my_cb, my_callback, my_arg);
6358 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
6359 /* For the meaning of a, b in calls to my_callback(), see the
6360 * documentation of the function that calls the callback.
6361 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
6362 * my_callback should return 1 if it wants BN_is_prime_ex()
6363 * to continue, or 0 to stop.
6368 *) Change the ZLIB compression method to be stateful, and make it
6369 available to TLS with the number defined in
6370 draft-ietf-tls-compression-04.txt.
6373 *) Add the ASN.1 structures and functions for CertificatePair, which
6374 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
6376 CertificatePair ::= SEQUENCE {
6377 forward [0] Certificate OPTIONAL,
6378 reverse [1] Certificate OPTIONAL,
6379 -- at least one of the pair shall be present -- }
6381 Also implement the PEM functions to read and write certificate
6382 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
6384 This needed to be defined, mostly for the sake of the LDAP
6385 attribute crossCertificatePair, but may prove useful elsewhere as
6389 *) Make it possible to inhibit symlinking of shared libraries in
6390 Makefile.shared, for Cygwin's sake.
6393 *) Extend the BIGNUM API by creating a function
6394 void BN_set_negative(BIGNUM *a, int neg);
6395 and a macro that behave like
6396 int BN_is_negative(const BIGNUM *a);
6398 to avoid the need to access 'a->neg' directly in applications.
6401 *) Implement fast modular reduction for pseudo-Mersenne primes
6402 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
6403 EC_GROUP_new_curve_GFp() will now automatically use this
6405 [Nils Larsch <nla@trustcenter.de>]
6407 *) Add new lock type (CRYPTO_LOCK_BN).
6410 *) Change the ENGINE framework to automatically load engines
6411 dynamically from specific directories unless they could be
6412 found to already be built in or loaded. Move all the
6413 current engines except for the cryptodev one to a new
6415 The engines in engines/ are built as shared libraries if
6416 the "shared" options was given to ./Configure or ./config.
6417 Otherwise, they are inserted in libcrypto.a.
6418 /usr/local/ssl/engines is the default directory for dynamic
6419 engines, but that can be overridden at configure time through
6420 the usual use of --prefix and/or --openssldir, and at run
6421 time with the environment variable OPENSSL_ENGINES.
6422 [Geoff Thorpe and Richard Levitte]
6424 *) Add Makefile.shared, a helper makefile to build shared
6425 libraries. Adapt Makefile.org.
6428 *) Add version info to Win32 DLLs.
6429 [Peter 'Luna' Runestig" <peter@runestig.com>]
6431 *) Add new 'medium level' PKCS#12 API. Certificates and keys
6432 can be added using this API to created arbitrary PKCS#12
6433 files while avoiding the low level API.
6435 New options to PKCS12_create(), key or cert can be NULL and
6436 will then be omitted from the output file. The encryption
6437 algorithm NIDs can be set to -1 for no encryption, the mac
6438 iteration count can be set to 0 to omit the mac.
6440 Enhance pkcs12 utility by making the -nokeys and -nocerts
6441 options work when creating a PKCS#12 file. New option -nomac
6442 to omit the mac, NONE can be set for an encryption algorithm.
6443 New code is modified to use the enhanced PKCS12_create()
6444 instead of the low level API.
6447 *) Extend ASN1 encoder to support indefinite length constructed
6448 encoding. This can output sequences tags and octet strings in
6449 this form. Modify pk7_asn1.c to support indefinite length
6450 encoding. This is experimental and needs additional code to
6451 be useful, such as an ASN1 bio and some enhanced streaming
6454 Extend template encode functionality so that tagging is passed
6455 down to the template encoder.
6458 *) Let 'openssl req' fail if an argument to '-newkey' is not
6459 recognized instead of using RSA as a default.
6462 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
6463 As these are not official, they are not included in "ALL";
6464 the "ECCdraft" ciphersuite group alias can be used to select them.
6465 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
6467 *) Add ECDH engine support.
6468 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
6470 *) Add ECDH in new directory crypto/ecdh/.
6471 [Douglas Stebila (Sun Microsystems Laboratories)]
6473 *) Let BN_rand_range() abort with an error after 100 iterations
6474 without success (which indicates a broken PRNG).
6477 *) Change BN_mod_sqrt() so that it verifies that the input value
6478 is really the square of the return value. (Previously,
6479 BN_mod_sqrt would show GIGO behaviour.)
6482 *) Add named elliptic curves over binary fields from X9.62, SECG,
6483 and WAP/WTLS; add OIDs that were still missing.
6485 [Sheueling Chang Shantz and Douglas Stebila
6486 (Sun Microsystems Laboratories)]
6488 *) Extend the EC library for elliptic curves over binary fields
6489 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
6492 EC_GF2m_simple_method
6496 EC_GROUP_new_curve_GF2m
6497 EC_GROUP_set_curve_GF2m
6498 EC_GROUP_get_curve_GF2m
6499 EC_POINT_set_affine_coordinates_GF2m
6500 EC_POINT_get_affine_coordinates_GF2m
6501 EC_POINT_set_compressed_coordinates_GF2m
6503 Point compression for binary fields is disabled by default for
6504 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
6507 As binary polynomials are represented as BIGNUMs, various members
6508 of the EC_GROUP and EC_POINT data structures can be shared
6509 between the implementations for prime fields and binary fields;
6510 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
6511 are essentially identical to their ..._GFp counterparts.
6512 (For simplicity, the '..._GFp' prefix has been dropped from
6513 various internal method names.)
6515 An internal 'field_div' method (similar to 'field_mul' and
6516 'field_sqr') has been added; this is used only for binary fields.
6518 [Sheueling Chang Shantz and Douglas Stebila
6519 (Sun Microsystems Laboratories)]
6521 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
6522 through methods ('mul', 'precompute_mult').
6524 The generic implementations (now internally called 'ec_wNAF_mul'
6525 and 'ec_wNAF_precomputed_mult') remain the default if these
6526 methods are undefined.
6528 [Sheueling Chang Shantz and Douglas Stebila
6529 (Sun Microsystems Laboratories)]
6531 *) New function EC_GROUP_get_degree, which is defined through
6532 EC_METHOD. For curves over prime fields, this returns the bit
6533 length of the modulus.
6535 [Sheueling Chang Shantz and Douglas Stebila
6536 (Sun Microsystems Laboratories)]
6538 *) New functions EC_GROUP_dup, EC_POINT_dup.
6539 (These simply call ..._new and ..._copy).
6541 [Sheueling Chang Shantz and Douglas Stebila
6542 (Sun Microsystems Laboratories)]
6544 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
6545 Polynomials are represented as BIGNUMs (where the sign bit is not
6546 used) in the following functions [macros]:
6549 BN_GF2m_sub [= BN_GF2m_add]
6550 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
6551 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
6552 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
6554 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
6555 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
6556 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
6557 BN_GF2m_cmp [= BN_ucmp]
6559 (Note that only the 'mod' functions are actually for fields GF(2^m).
6560 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
6562 For some functions, an the irreducible polynomial defining a
6563 field can be given as an 'unsigned int[]' with strictly
6564 decreasing elements giving the indices of those bits that are set;
6565 i.e., p[] represents the polynomial
6566 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
6568 p[0] > p[1] > ... > p[k] = 0.
6569 This applies to the following functions:
6574 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
6575 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
6577 BN_GF2m_mod_sqrt_arr
6578 BN_GF2m_mod_solve_quad_arr
6582 Conversion can be performed by the following functions:
6587 bntest.c has additional tests for binary polynomial arithmetic.
6589 Two implementations for BN_GF2m_mod_div() are available.
6590 The default algorithm simply uses BN_GF2m_mod_inv() and
6591 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
6592 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
6593 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
6595 [Sheueling Chang Shantz and Douglas Stebila
6596 (Sun Microsystems Laboratories)]
6598 *) Add new error code 'ERR_R_DISABLED' that can be used when some
6599 functionality is disabled at compile-time.
6600 [Douglas Stebila <douglas.stebila@sun.com>]
6602 *) Change default behaviour of 'openssl asn1parse' so that more
6603 information is visible when viewing, e.g., a certificate:
6605 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
6606 mode the content of non-printable OCTET STRINGs is output in a
6607 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
6608 avoid the appearance of a printable string.
6609 [Nils Larsch <nla@trustcenter.de>]
6611 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
6613 EC_GROUP_set_asn1_flag()
6614 EC_GROUP_get_asn1_flag()
6615 EC_GROUP_set_point_conversion_form()
6616 EC_GROUP_get_point_conversion_form()
6617 These control ASN1 encoding details:
6618 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
6619 has been set to OPENSSL_EC_NAMED_CURVE.
6620 - Points are encoded in uncompressed form by default; options for
6621 asn1_for are as for point2oct, namely
6622 POINT_CONVERSION_COMPRESSED
6623 POINT_CONVERSION_UNCOMPRESSED
6624 POINT_CONVERSION_HYBRID
6626 Also add 'seed' and 'seed_len' members to EC_GROUP with access
6629 EC_GROUP_get0_seed()
6630 EC_GROUP_get_seed_len()
6631 This is used only for ASN1 purposes (so far).
6632 [Nils Larsch <nla@trustcenter.de>]
6634 *) Add 'field_type' member to EC_METHOD, which holds the NID
6635 of the appropriate field type OID. The new function
6636 EC_METHOD_get_field_type() returns this value.
6637 [Nils Larsch <nla@trustcenter.de>]
6642 EC_POINT_point2hex()
6643 EC_POINT_hex2point()
6644 providing useful interfaces to EC_POINT_point2oct() and
6645 EC_POINT_oct2point().
6646 [Nils Larsch <nla@trustcenter.de>]
6648 *) Change internals of the EC library so that the functions
6649 EC_GROUP_set_generator()
6650 EC_GROUP_get_generator()
6651 EC_GROUP_get_order()
6652 EC_GROUP_get_cofactor()
6653 are implemented directly in crypto/ec/ec_lib.c and not dispatched
6654 to methods, which would lead to unnecessary code duplication when
6655 adding different types of curves.
6656 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
6658 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
6659 arithmetic, and such that modified wNAFs are generated
6660 (which avoid length expansion in many cases).
6663 *) Add a function EC_GROUP_check_discriminant() (defined via
6664 EC_METHOD) that verifies that the curve discriminant is non-zero.
6666 Add a function EC_GROUP_check() that makes some sanity tests
6667 on a EC_GROUP, its generator and order. This includes
6668 EC_GROUP_check_discriminant().
6669 [Nils Larsch <nla@trustcenter.de>]
6671 *) Add ECDSA in new directory crypto/ecdsa/.
6673 Add applications 'openssl ecparam' and 'openssl ecdsa'
6674 (these are based on 'openssl dsaparam' and 'openssl dsa').
6676 ECDSA support is also included in various other files across the
6677 library. Most notably,
6678 - 'openssl req' now has a '-newkey ecdsa:file' option;
6679 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
6680 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
6681 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
6682 them suitable for ECDSA where domain parameters must be
6683 extracted before the specific public key;
6684 - ECDSA engine support has been added.
6685 [Nils Larsch <nla@trustcenter.de>]
6687 *) Include some named elliptic curves, and add OIDs from X9.62,
6688 SECG, and WAP/WTLS. Each curve can be obtained from the new
6690 EC_GROUP_new_by_curve_name(),
6691 and the list of available named curves can be obtained with
6692 EC_get_builtin_curves().
6693 Also add a 'curve_name' member to EC_GROUP objects, which can be
6695 EC_GROUP_set_curve_name()
6696 EC_GROUP_get_curve_name()
6697 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
6699 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6700 was actually never needed) and in BN_mul(). The removal in BN_mul()
6701 required a small change in bn_mul_part_recursive() and the addition
6702 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6703 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6704 bn_sub_words() and bn_add_words() except they take arrays with
6708 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
6710 *) Cleanse PEM buffers before freeing them since they may contain
6712 [Benjamin Bennett <ben@psc.edu>]
6714 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
6715 a ciphersuite string such as "DEFAULT:RSA" cannot enable
6716 authentication-only ciphersuites.
6719 *) Since AES128 and AES256 share a single mask bit in the logic of
6720 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
6721 kludge to work properly if AES128 is available and AES256 isn't.
6724 *) Expand security boundary to match 1.1.1 module.
6727 *) Remove redundant features: hash file source, editing of test vectors
6728 modify fipsld to use external fips_premain.c signature.
6731 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
6732 run algorithm test programs.
6735 *) Make algorithm test programs more tolerant of whitespace.
6738 *) Have SSL/TLS server implementation tolerate "mismatched" record
6739 protocol version while receiving ClientHello even if the
6740 ClientHello is fragmented. (The server can't insist on the
6741 particular protocol version it has chosen before the ServerHello
6742 message has informed the client about his choice.)
6745 *) Load error codes if they are not already present instead of using a
6746 static variable. This allows them to be cleanly unloaded and reloaded.
6749 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
6751 *) Introduce limits to prevent malicious keys being able to
6752 cause a denial of service. (CVE-2006-2940)
6753 [Steve Henson, Bodo Moeller]
6755 *) Fix ASN.1 parsing of certain invalid structures that can result
6756 in a denial of service. (CVE-2006-2937) [Steve Henson]
6758 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
6759 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
6761 *) Fix SSL client code which could crash if connecting to a
6762 malicious SSLv2 server. (CVE-2006-4343)
6763 [Tavis Ormandy and Will Drewry, Google Security Team]
6765 *) Change ciphersuite string processing so that an explicit
6766 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
6767 will no longer include "AES128-SHA"), and any other similar
6768 ciphersuite (same bitmap) from *other* protocol versions (so that
6769 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
6770 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
6771 changes from 0.9.8b and 0.9.8d.
6774 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
6776 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
6777 (CVE-2006-4339) [Ben Laurie and Google Security Team]
6779 *) Change the Unix randomness entropy gathering to use poll() when
6780 possible instead of select(), since the latter has some
6781 undesirable limitations.
6782 [Darryl Miles via Richard Levitte and Bodo Moeller]
6784 *) Disable rogue ciphersuites:
6786 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
6787 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
6788 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
6790 The latter two were purportedly from
6791 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
6794 Also deactivate the remaining ciphersuites from
6795 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
6796 unofficial, and the ID has long expired.
6799 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
6800 dual-core machines) and other potential thread-safety issues.
6803 Changes between 0.9.7i and 0.9.7j [04 May 2006]
6805 *) Adapt fipsld and the build system to link against the validated FIPS
6806 module in FIPS mode.
6809 *) Fixes for VC++ 2005 build under Windows.
6812 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
6813 from a Windows bash shell such as MSYS. It is autodetected from the
6814 "config" script when run from a VC++ environment. Modify standard VC++
6815 build to use fipscanister.o from the GNU make build.
6818 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
6820 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
6821 The value now differs depending on if you build for FIPS or not.
6822 BEWARE! A program linked with a shared FIPSed libcrypto can't be
6823 safely run with a non-FIPSed libcrypto, as it may crash because of
6824 the difference induced by this change.
6827 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
6829 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
6830 (part of SSL_OP_ALL). This option used to disable the
6831 countermeasure against man-in-the-middle protocol-version
6832 rollback in the SSL 2.0 server implementation, which is a bad
6833 idea. (CVE-2005-2969)
6835 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
6836 for Information Security, National Institute of Advanced Industrial
6837 Science and Technology [AIST], Japan)]
6839 *) Minimal support for X9.31 signatures and PSS padding modes. This is
6840 mainly for FIPS compliance and not fully integrated at this stage.
6843 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
6844 the exponentiation using a fixed-length exponent. (Otherwise,
6845 the information leaked through timing could expose the secret key
6846 after many signatures; cf. Bleichenbacher's attack on DSA with
6850 *) Make a new fixed-window mod_exp implementation the default for
6851 RSA, DSA, and DH private-key operations so that the sequence of
6852 squares and multiplies and the memory access pattern are
6853 independent of the particular secret key. This will mitigate
6854 cache-timing and potential related attacks.
6856 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
6857 and this is automatically used by BN_mod_exp_mont() if the new flag
6858 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
6859 will use this BN flag for private exponents unless the flag
6860 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
6861 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
6863 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
6865 *) Change the client implementation for SSLv23_method() and
6866 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
6867 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
6868 (Previously, the SSL 2.0 backwards compatible Client Hello
6869 message format would be used even with SSL_OP_NO_SSLv2.)
6872 *) Add support for smime-type MIME parameter in S/MIME messages which some
6876 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
6877 a threadsafe manner. Modify rsa code to use new function and add calls
6878 to dsa and dh code (which had race conditions before).
6881 *) Include the fixed error library code in the C error file definitions
6882 instead of fixing them up at runtime. This keeps the error code
6883 structures constant.
6886 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
6888 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
6891 *) Fixes for newer kerberos headers. NB: the casts are needed because
6892 the 'length' field is signed on one version and unsigned on another
6893 with no (?) obvious way to tell the difference, without these VC++
6894 complains. Also the "definition" of FAR (blank) is no longer included
6895 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
6896 some needed definitions.
6899 *) Undo Cygwin change.
6902 *) Added support for proxy certificates according to RFC 3820.
6903 Because they may be a security thread to unaware applications,
6904 they must be explicitly allowed in run-time. See
6905 docs/HOWTO/proxy_certificates.txt for further information.
6908 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
6910 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
6911 server and client random values. Previously
6912 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
6913 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
6915 This change has negligible security impact because:
6917 1. Server and client random values still have 24 bytes of pseudo random
6920 2. Server and client random values are sent in the clear in the initial
6923 3. The master secret is derived using the premaster secret (48 bytes in
6924 size for static RSA ciphersuites) as well as client server and random
6927 The OpenSSL team would like to thank the UK NISCC for bringing this issue
6930 [Stephen Henson, reported by UK NISCC]
6932 *) Use Windows randomness collection on Cygwin.
6935 *) Fix hang in EGD/PRNGD query when communication socket is closed
6936 prematurely by EGD/PRNGD.
6937 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
6939 *) Prompt for pass phrases when appropriate for PKCS12 input format.
6942 *) Back-port of selected performance improvements from development
6943 branch, as well as improved support for PowerPC platforms.
6946 *) Add lots of checks for memory allocation failure, error codes to indicate
6947 failure and freeing up memory if a failure occurs.
6948 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
6950 *) Add new -passin argument to dgst.
6953 *) Perform some character comparisons of different types in X509_NAME_cmp:
6954 this is needed for some certificates that re-encode DNs into UTF8Strings
6955 (in violation of RFC3280) and can't or won't issue name rollover
6959 *) Make an explicit check during certificate validation to see that
6960 the CA setting in each certificate on the chain is correct. As a
6961 side effect always do the following basic checks on extensions,
6962 not just when there's an associated purpose to the check:
6964 - if there is an unhandled critical extension (unless the user
6965 has chosen to ignore this fault)
6966 - if the path length has been exceeded (if one is set at all)
6967 - that certain extensions fit the associated purpose (if one has
6971 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
6973 *) Avoid a race condition when CRLs are checked in a multi threaded
6974 environment. This would happen due to the reordering of the revoked
6975 entries during signature checking and serial number lookup. Now the
6976 encoding is cached and the serial number sort performed under a lock.
6977 Add new STACK function sk_is_sorted().
6980 *) Add Delta CRL to the extension code.
6983 *) Various fixes to s3_pkt.c so alerts are sent properly.
6984 [David Holmes <d.holmes@f5.com>]
6986 *) Reduce the chances of duplicate issuer name and serial numbers (in
6987 violation of RFC3280) using the OpenSSL certificate creation utilities.
6988 This is done by creating a random 64 bit value for the initial serial
6989 number when a serial number file is created or when a self signed
6990 certificate is created using 'openssl req -x509'. The initial serial
6991 number file is created using 'openssl x509 -next_serial' in CA.pl
6992 rather than being initialized to 1.
6995 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
6997 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
6998 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
6999 [Joe Orton, Steve Henson]
7001 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
7003 [Joe Orton, Steve Henson]
7005 *) Make it possible to have multiple active certificates with the same
7006 subject in the CA index file. This is done only if the keyword
7007 'unique_subject' is set to 'no' in the main CA section (default
7008 if 'CA_default') of the configuration file. The value is saved
7009 with the database itself in a separate index attribute file,
7010 named like the index file with '.attr' appended to the name.
7013 *) X509 verify fixes. Disable broken certificate workarounds when
7014 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
7015 keyUsage extension present. Don't accept CRLs with unhandled critical
7016 extensions: since verify currently doesn't process CRL extensions this
7017 rejects a CRL with *any* critical extensions. Add new verify error codes
7021 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
7022 A clarification of RFC2560 will require the use of OCTET STRINGs and
7023 some implementations cannot handle the current raw format. Since OpenSSL
7024 copies and compares OCSP nonces as opaque blobs without any attempt at
7025 parsing them this should not create any compatibility issues.
7028 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
7029 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
7030 this HMAC (and other) operations are several times slower than OpenSSL
7034 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
7035 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7037 *) Use the correct content when signing type "other".
7040 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
7042 *) Fix various bugs revealed by running the NISCC test suite:
7044 Stop out of bounds reads in the ASN1 code when presented with
7045 invalid tags (CVE-2003-0543 and CVE-2003-0544).
7047 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
7049 If verify callback ignores invalid public key errors don't try to check
7050 certificate signature with the NULL public key.
7054 *) New -ignore_err option in ocsp application to stop the server
7055 exiting on the first error in a request.
7058 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
7059 if the server requested one: as stated in TLS 1.0 and SSL 3.0
7063 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
7064 extra data after the compression methods not only for TLS 1.0
7065 but also for SSL 3.0 (as required by the specification).
7066 [Bodo Moeller; problem pointed out by Matthias Loepfe]
7068 *) Change X509_certificate_type() to mark the key as exported/exportable
7069 when it's 512 *bits* long, not 512 bytes.
7072 *) Change AES_cbc_encrypt() so it outputs exact multiple of
7073 blocks during encryption.
7076 *) Various fixes to base64 BIO and non blocking I/O. On write
7077 flushes were not handled properly if the BIO retried. On read
7078 data was not being buffered properly and had various logic bugs.
7079 This also affects blocking I/O when the data being decoded is a
7083 *) Various S/MIME bugfixes and compatibility changes:
7084 output correct application/pkcs7 MIME type if
7085 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
7086 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
7087 of files as .eml work). Correctly handle very long lines in MIME
7091 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
7093 *) Countermeasure against the Klima-Pokorny-Rosa extension of
7094 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
7095 a protocol version number mismatch like a decryption error
7096 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
7099 *) Turn on RSA blinding by default in the default implementation
7100 to avoid a timing attack. Applications that don't want it can call
7101 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
7102 They would be ill-advised to do so in most cases.
7103 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
7105 *) Change RSA blinding code so that it works when the PRNG is not
7106 seeded (in this case, the secret RSA exponent is abused as
7107 an unpredictable seed -- if it is not unpredictable, there
7108 is no point in blinding anyway). Make RSA blinding thread-safe
7109 by remembering the creator's thread ID in rsa->blinding and
7110 having all other threads use local one-time blinding factors
7111 (this requires more computation than sharing rsa->blinding, but
7112 avoids excessive locking; and if an RSA object is not shared
7113 between threads, blinding will still be very fast).
7116 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
7117 ENGINE as defaults for all supported algorithms irrespective of
7118 the 'flags' parameter. 'flags' is now honoured, so applications
7119 should make sure they are passing it correctly.
7122 *) Target "mingw" now allows native Windows code to be generated in
7123 the Cygwin environment as well as with the MinGW compiler.
7126 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
7128 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
7129 via timing by performing a MAC computation even if incorrect
7130 block cipher padding has been found. This is a countermeasure
7131 against active attacks where the attacker has to distinguish
7132 between bad padding and a MAC verification error. (CVE-2003-0078)
7134 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
7135 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
7136 Martin Vuagnoux (EPFL, Ilion)]
7138 *) Make the no-err option work as intended. The intention with no-err
7139 is not to have the whole error stack handling routines removed from
7140 libcrypto, it's only intended to remove all the function name and
7141 reason texts, thereby removing some of the footprint that may not
7142 be interesting if those errors aren't displayed anyway.
7144 NOTE: it's still possible for any application or module to have its
7145 own set of error texts inserted. The routines are there, just not
7146 used by default when no-err is given.
7149 *) Add support for FreeBSD on IA64.
7150 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
7152 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
7153 Kerberos function mit_des_cbc_cksum(). Before this change,
7154 the value returned by DES_cbc_cksum() was like the one from
7155 mit_des_cbc_cksum(), except the bytes were swapped.
7156 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
7158 *) Allow an application to disable the automatic SSL chain building.
7159 Before this a rather primitive chain build was always performed in
7160 ssl3_output_cert_chain(): an application had no way to send the
7161 correct chain if the automatic operation produced an incorrect result.
7163 Now the chain builder is disabled if either:
7165 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
7167 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
7169 The reasoning behind this is that an application would not want the
7170 auto chain building to take place if extra chain certificates are
7171 present and it might also want a means of sending no additional
7172 certificates (for example the chain has two certificates and the
7176 *) Add the possibility to build without the ENGINE framework.
7177 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7179 *) Under Win32 gmtime() can return NULL: check return value in
7180 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
7183 *) DSA routines: under certain error conditions uninitialized BN objects
7184 could be freed. Solution: make sure initialization is performed early
7185 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
7186 Nils Larsch <nla@trustcenter.de> via PR#459)
7189 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
7190 checked on reconnect on the client side, therefore session resumption
7191 could still fail with a "ssl session id is different" error. This
7192 behaviour is masked when SSL_OP_ALL is used due to
7193 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
7194 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7195 followup to PR #377.
7198 *) IA-32 assembler support enhancements: unified ELF targets, support
7199 for SCO/Caldera platforms, fix for Cygwin shared build.
7202 *) Add support for FreeBSD on sparc64. As a consequence, support for
7203 FreeBSD on non-x86 processors is separate from x86 processors on
7204 the config script, much like the NetBSD support.
7205 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
7207 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
7209 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
7212 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
7213 code (06) was taken as the first octet of the session ID and the last
7214 octet was ignored consequently. As a result SSLv2 client side session
7215 caching could not have worked due to the session ID mismatch between
7217 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7221 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
7222 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
7226 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
7227 seems that in spite of existing for more than a year, many application
7228 author have done nothing to provide the necessary callbacks, which
7229 means that this particular engine will not work properly anywhere.
7230 This is a very unfortunate situation which forces us, in the name
7231 of usability, to give the hw_ncipher.c a static lock, which is part
7233 NOTE: This is for the 0.9.7 series ONLY. This hack will never
7234 appear in 0.9.8 or later. We EXPECT application authors to have
7235 dealt properly with this when 0.9.8 is released (unless we actually
7236 make such changes in the libcrypto locking code that changes will
7237 have to be made anyway).
7240 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
7241 octets have been read, EOF or an error occurs. Without this change
7242 some truncated ASN1 structures will not produce an error.
7245 *) Disable Heimdal support, since it hasn't been fully implemented.
7246 Still give the possibility to force the use of Heimdal, but with
7247 warnings and a request that patches get sent to openssl-dev.
7250 *) Add the VC-CE target, introduce the WINCE sysname, and add
7251 INSTALL.WCE and appropriate conditionals to make it build.
7252 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7254 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
7255 cygssl-x.y.z.dll, where x, y and z are the major, minor and
7256 edit numbers of the version.
7257 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7259 *) Introduce safe string copy and catenation functions
7260 (BUF_strlcpy() and BUF_strlcat()).
7261 [Ben Laurie (CHATS) and Richard Levitte]
7263 *) Avoid using fixed-size buffers for one-line DNs.
7264 [Ben Laurie (CHATS)]
7266 *) Add BUF_MEM_grow_clean() to avoid information leakage when
7267 resizing buffers containing secrets, and use where appropriate.
7268 [Ben Laurie (CHATS)]
7270 *) Avoid using fixed size buffers for configuration file location.
7271 [Ben Laurie (CHATS)]
7273 *) Avoid filename truncation for various CA files.
7274 [Ben Laurie (CHATS)]
7276 *) Use sizeof in preference to magic numbers.
7277 [Ben Laurie (CHATS)]
7279 *) Avoid filename truncation in cert requests.
7280 [Ben Laurie (CHATS)]
7282 *) Add assertions to check for (supposedly impossible) buffer
7284 [Ben Laurie (CHATS)]
7286 *) Don't cache truncated DNS entries in the local cache (this could
7287 potentially lead to a spoofing attack).
7288 [Ben Laurie (CHATS)]
7290 *) Fix various buffers to be large enough for hex/decimal
7291 representations in a platform independent manner.
7292 [Ben Laurie (CHATS)]
7294 *) Add CRYPTO_realloc_clean() to avoid information leakage when
7295 resizing buffers containing secrets, and use where appropriate.
7296 [Ben Laurie (CHATS)]
7298 *) Add BIO_indent() to avoid much slightly worrying code to do
7300 [Ben Laurie (CHATS)]
7302 *) Convert sprintf()/BIO_puts() to BIO_printf().
7303 [Ben Laurie (CHATS)]
7305 *) buffer_gets() could terminate with the buffer only half
7307 [Ben Laurie (CHATS)]
7309 *) Add assertions to prevent user-supplied crypto functions from
7310 overflowing internal buffers by having large block sizes, etc.
7311 [Ben Laurie (CHATS)]
7313 *) New OPENSSL_assert() macro (similar to assert(), but enabled
7315 [Ben Laurie (CHATS)]
7317 *) Eliminate unused copy of key in RC4.
7318 [Ben Laurie (CHATS)]
7320 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
7321 [Ben Laurie (CHATS)]
7323 *) Fix off-by-one error in EGD path.
7324 [Ben Laurie (CHATS)]
7326 *) If RANDFILE path is too long, ignore instead of truncating.
7327 [Ben Laurie (CHATS)]
7329 *) Eliminate unused and incorrectly sized X.509 structure
7331 [Ben Laurie (CHATS)]
7333 *) Eliminate unused and dangerous function knumber().
7334 [Ben Laurie (CHATS)]
7336 *) Eliminate unused and dangerous structure, KSSL_ERR.
7337 [Ben Laurie (CHATS)]
7339 *) Protect against overlong session ID context length in an encoded
7340 session object. Since these are local, this does not appear to be
7342 [Ben Laurie (CHATS)]
7344 *) Change from security patch (see 0.9.6e below) that did not affect
7345 the 0.9.6 release series:
7347 Remote buffer overflow in SSL3 protocol - an attacker could
7348 supply an oversized master key in Kerberos-enabled versions.
7350 [Ben Laurie (CHATS)]
7352 *) Change the SSL kerb5 codes to match RFC 2712.
7355 *) Make -nameopt work fully for req and add -reqopt switch.
7356 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
7358 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
7359 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
7361 *) Make sure tests can be performed even if the corresponding algorithms
7362 have been removed entirely. This was also the last step to make
7363 OpenSSL compilable with DJGPP under all reasonable conditions.
7364 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
7366 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
7367 to allow version independent disabling of normally unselected ciphers,
7368 which may be activated as a side-effect of selecting a single cipher.
7370 (E.g., cipher list string "RSA" enables ciphersuites that are left
7371 out of "ALL" because they do not provide symmetric encryption.
7372 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
7373 [Lutz Jaenicke, Bodo Moeller]
7375 *) Add appropriate support for separate platform-dependent build
7376 directories. The recommended way to make a platform-dependent
7377 build directory is the following (tested on Linux), maybe with
7380 # Place yourself outside of the OpenSSL source tree. In
7381 # this example, the environment variable OPENSSL_SOURCE
7382 # is assumed to contain the absolute OpenSSL source directory.
7383 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
7384 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
7385 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
7386 mkdir -p `dirname $F`
7387 ln -s $OPENSSL_SOURCE/$F $F
7390 To be absolutely sure not to disturb the source tree, a "make clean"
7391 is a good thing. If it isn't successful, don't worry about it,
7392 it probably means the source directory is very clean.
7395 *) Make sure any ENGINE control commands make local copies of string
7396 pointers passed to them whenever necessary. Otherwise it is possible
7397 the caller may have overwritten (or deallocated) the original string
7398 data when a later ENGINE operation tries to use the stored values.
7399 [Götz Babin-Ebell <babinebell@trustcenter.de>]
7401 *) Improve diagnostics in file reading and command-line digests.
7402 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
7404 *) Add AES modes CFB and OFB to the object database. Correct an
7405 error in AES-CFB decryption.
7408 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
7409 allows existing EVP_CIPHER_CTX structures to be reused after
7410 calling EVP_*Final(). This behaviour is used by encryption
7411 BIOs and some applications. This has the side effect that
7412 applications must explicitly clean up cipher contexts with
7413 EVP_CIPHER_CTX_cleanup() or they will leak memory.
7416 *) Check the values of dna and dnb in bn_mul_recursive before calling
7417 bn_mul_comba (a non zero value means the a or b arrays do not contain
7418 n2 elements) and fallback to bn_mul_normal if either is not zero.
7421 *) Fix escaping of non-ASCII characters when using the -subj option
7422 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
7425 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
7426 form for "surname", serialNumber has no short form.
7427 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
7428 therefore remove "mail" short name for "internet 7".
7429 The OID for unique identifiers in X509 certificates is
7430 x500UniqueIdentifier, not uniqueIdentifier.
7431 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
7434 *) Add an "init" command to the ENGINE config module and auto initialize
7435 ENGINEs. Without any "init" command the ENGINE will be initialized
7436 after all ctrl commands have been executed on it. If init=1 the
7437 ENGINE is initialized at that point (ctrls before that point are run
7438 on the uninitialized ENGINE and after on the initialized one). If
7439 init=0 then the ENGINE will not be initialized at all.
7442 *) Fix the 'app_verify_callback' interface so that the user-defined
7443 argument is actually passed to the callback: In the
7444 SSL_CTX_set_cert_verify_callback() prototype, the callback
7445 declaration has been changed from
7448 int (*cb)(X509_STORE_CTX *,void *);
7449 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
7450 i=s->ctx->app_verify_callback(&ctx)
7451 has been changed into
7452 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
7454 To update applications using SSL_CTX_set_cert_verify_callback(),
7455 a dummy argument can be added to their callback functions.
7456 [D. K. Smetters <smetters@parc.xerox.com>]
7458 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
7459 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
7461 *) Add and OPENSSL_LOAD_CONF define which will cause
7462 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
7463 This allows older applications to transparently support certain
7464 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
7465 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
7466 load the config file and OPENSSL_add_all_algorithms_conf() which will
7467 always load it have also been added.
7470 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
7471 Adjust NIDs and EVP layer.
7472 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7474 *) Config modules support in openssl utility.
7476 Most commands now load modules from the config file,
7477 though in a few (such as version) this isn't done
7478 because it couldn't be used for anything.
7480 In the case of ca and req the config file used is
7481 the same as the utility itself: that is the -config
7482 command line option can be used to specify an
7486 *) Move default behaviour from OPENSSL_config(). If appname is NULL
7487 use "openssl_conf" if filename is NULL use default openssl config file.
7490 *) Add an argument to OPENSSL_config() to allow the use of an alternative
7491 config section name. Add a new flag to tolerate a missing config file
7492 and move code to CONF_modules_load_file().
7495 *) Support for crypto accelerator cards from Accelerated Encryption
7496 Processing, www.aep.ie. (Use engine 'aep')
7497 The support was copied from 0.9.6c [engine] and adapted/corrected
7498 to work with the new engine framework.
7499 [AEP Inc. and Richard Levitte]
7501 *) Support for SureWare crypto accelerator cards from Baltimore
7502 Technologies. (Use engine 'sureware')
7503 The support was copied from 0.9.6c [engine] and adapted
7504 to work with the new engine framework.
7507 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
7508 make the newer ENGINE framework commands for the CHIL engine work.
7509 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
7511 *) Make it possible to produce shared libraries on ReliantUNIX.
7512 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
7514 *) Add the configuration target debug-linux-ppro.
7515 Make 'openssl rsa' use the general key loading routines
7516 implemented in apps.c, and make those routines able to
7517 handle the key format FORMAT_NETSCAPE and the variant
7519 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7521 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7522 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7524 *) Add -keyform to rsautl, and document -engine.
7525 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
7527 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
7528 BIO_R_NO_SUCH_FILE error code rather than the generic
7529 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
7532 *) Add new functions
7534 ERR_peek_last_error_line
7535 ERR_peek_last_error_line_data.
7536 These are similar to
7539 ERR_peek_error_line_data,
7540 but report on the latest error recorded rather than the first one
7541 still in the error queue.
7542 [Ben Laurie, Bodo Moeller]
7544 *) default_algorithms option in ENGINE config module. This allows things
7546 default_algorithms = ALL
7547 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
7550 *) Preliminary ENGINE config module.
7553 *) New experimental application configuration code.
7556 *) Change the AES code to follow the same name structure as all other
7557 symmetric ciphers, and behave the same way. Move everything to
7558 the directory crypto/aes, thereby obsoleting crypto/rijndael.
7559 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7561 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
7562 [Ben Laurie and Theo de Raadt]
7564 *) Add option to output public keys in req command.
7565 [Massimiliano Pala madwolf@openca.org]
7567 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
7568 (up to about 10% better than before for P-192 and P-224).
7571 *) New functions/macros
7573 SSL_CTX_set_msg_callback(ctx, cb)
7574 SSL_CTX_set_msg_callback_arg(ctx, arg)
7575 SSL_set_msg_callback(ssl, cb)
7576 SSL_set_msg_callback_arg(ssl, arg)
7578 to request calling a callback function
7580 void cb(int write_p, int version, int content_type,
7581 const void *buf, size_t len, SSL *ssl, void *arg)
7583 whenever a protocol message has been completely received
7584 (write_p == 0) or sent (write_p == 1). Here 'version' is the
7585 protocol version according to which the SSL library interprets
7586 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
7587 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
7588 the content type as defined in the SSL 3.0/TLS 1.0 protocol
7589 specification (change_cipher_spec(20), alert(21), handshake(22)).
7590 'buf' and 'len' point to the actual message, 'ssl' to the
7591 SSL object, and 'arg' is the application-defined value set by
7592 SSL[_CTX]_set_msg_callback_arg().
7594 'openssl s_client' and 'openssl s_server' have new '-msg' options
7595 to enable a callback that displays all protocol messages.
7598 *) Change the shared library support so shared libraries are built as
7599 soon as the corresponding static library is finished, and thereby get
7600 openssl and the test programs linked against the shared library.
7601 This still only happens when the keyword "shard" has been given to
7602 the configuration scripts.
7604 NOTE: shared library support is still an experimental thing, and
7605 backward binary compatibility is still not guaranteed.
7606 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
7608 *) Add support for Subject Information Access extension.
7609 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7611 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
7612 additional bytes when new memory had to be allocated, not just
7613 when reusing an existing buffer.
7616 *) New command line and configuration option 'utf8' for the req command.
7617 This allows field values to be specified as UTF8 strings.
7620 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
7621 runs for the former and machine-readable output for the latter.
7624 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
7625 of the e-mail address in the DN (i.e., it will go into a certificate
7626 extension only). The new configuration file option 'email_in_dn = no'
7627 has the same effect.
7628 [Massimiliano Pala madwolf@openca.org]
7630 *) Change all functions with names starting with des_ to be starting
7631 with DES_ instead. Add wrappers that are compatible with libdes,
7632 but are named _ossl_old_des_*. Finally, add macros that map the
7633 des_* symbols to the corresponding _ossl_old_des_* if libdes
7634 compatibility is desired. If OpenSSL 0.9.6c compatibility is
7635 desired, the des_* symbols will be mapped to DES_*, with one
7638 Since we provide two compatibility mappings, the user needs to
7639 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
7640 compatibility is desired. The default (i.e., when that macro
7641 isn't defined) is OpenSSL 0.9.6c compatibility.
7643 There are also macros that enable and disable the support of old
7644 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
7645 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
7646 are defined, the default will apply: to support the old des routines.
7648 In either case, one must include openssl/des.h to get the correct
7649 definitions. Do not try to just include openssl/des_old.h, that
7652 NOTE: This is a major break of an old API into a new one. Software
7653 authors are encouraged to switch to the DES_ style functions. Some
7654 time in the future, des_old.h and the libdes compatibility functions
7655 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
7656 default), and then completely removed.
7659 *) Test for certificates which contain unsupported critical extensions.
7660 If such a certificate is found during a verify operation it is
7661 rejected by default: this behaviour can be overridden by either
7662 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
7663 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
7664 X509_supported_extension() has also been added which returns 1 if a
7665 particular extension is supported.
7668 *) Modify the behaviour of EVP cipher functions in similar way to digests
7669 to retain compatibility with existing code.
7672 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
7673 compatibility with existing code. In particular the 'ctx' parameter does
7674 not have to be to be initialized before the call to EVP_DigestInit() and
7675 it is tidied up after a call to EVP_DigestFinal(). New function
7676 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
7677 EVP_MD_CTX_copy() changed to not require the destination to be
7678 initialized valid and new function EVP_MD_CTX_copy_ex() added which
7679 requires the destination to be valid.
7681 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
7682 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
7685 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
7686 so that complete 'Handshake' protocol structures are kept in memory
7687 instead of overwriting 'msg_type' and 'length' with 'body' data.
7690 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
7691 [Massimo Santin via Richard Levitte]
7693 *) Major restructuring to the underlying ENGINE code. This includes
7694 reduction of linker bloat, separation of pure "ENGINE" manipulation
7695 (initialisation, etc) from functionality dealing with implementations
7696 of specific crypto interfaces. This change also introduces integrated
7697 support for symmetric ciphers and digest implementations - so ENGINEs
7698 can now accelerate these by providing EVP_CIPHER and EVP_MD
7699 implementations of their own. This is detailed in crypto/engine/README
7700 as it couldn't be adequately described here. However, there are a few
7701 API changes worth noting - some RSA, DSA, DH, and RAND functions that
7702 were changed in the original introduction of ENGINE code have now
7703 reverted back - the hooking from this code to ENGINE is now a good
7704 deal more passive and at run-time, operations deal directly with
7705 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
7706 dereferencing through an ENGINE pointer any more. Also, the ENGINE
7707 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
7708 they were not being used by the framework as there is no concept of a
7709 BIGNUM_METHOD and they could not be generalised to the new
7710 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
7711 ENGINE_cpy() has been removed as it cannot be consistently defined in
7715 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
7718 *) Change mkdef.pl to sort symbols that get the same entry number,
7719 and make sure the automatically generated functions ERR_load_*
7720 become part of libeay.num as well.
7723 *) New function SSL_renegotiate_pending(). This returns true once
7724 renegotiation has been requested (either SSL_renegotiate() call
7725 or HelloRequest/ClientHello received from the peer) and becomes
7726 false once a handshake has been completed.
7727 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
7728 sends a HelloRequest, but does not ensure that a handshake takes
7729 place. SSL_renegotiate_pending() is useful for checking if the
7730 client has followed the request.)
7733 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
7734 By default, clients may request session resumption even during
7735 renegotiation (if session ID contexts permit); with this option,
7736 session resumption is possible only in the first handshake.
7738 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
7739 more bits available for options that should not be part of
7740 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
7743 *) Add some demos for certificate and certificate request creation.
7746 *) Make maximum certificate chain size accepted from the peer application
7747 settable (SSL*_get/set_max_cert_list()), as proposed by
7748 "Douglas E. Engert" <deengert@anl.gov>.
7751 *) Add support for shared libraries for Unixware-7
7752 (Boyd Lynn Gerber <gerberb@zenez.com>).
7755 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
7756 be done prior to destruction. Use this to unload error strings from
7757 ENGINEs that load their own error strings. NB: This adds two new API
7758 functions to "get" and "set" this destroy handler in an ENGINE.
7761 *) Alter all existing ENGINE implementations (except "openssl" and
7762 "openbsd") to dynamically instantiate their own error strings. This
7763 makes them more flexible to be built both as statically-linked ENGINEs
7764 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
7765 Also, add stub code to each that makes building them as self-contained
7766 shared-libraries easier (see README.ENGINE).
7769 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
7770 implementations into applications that are completely implemented in
7771 self-contained shared-libraries. The "dynamic" ENGINE exposes control
7772 commands that can be used to configure what shared-library to load and
7773 to control aspects of the way it is handled. Also, made an update to
7774 the README.ENGINE file that brings its information up-to-date and
7775 provides some information and instructions on the "dynamic" ENGINE
7776 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
7779 *) Make it possible to unload ranges of ERR strings with a new
7780 "ERR_unload_strings" function.
7783 *) Add a copy() function to EVP_MD.
7786 *) Make EVP_MD routines take a context pointer instead of just the
7787 md_data void pointer.
7790 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
7791 that the digest can only process a single chunk of data
7792 (typically because it is provided by a piece of
7793 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
7794 is only going to provide a single chunk of data, and hence the
7795 framework needn't accumulate the data for oneshot drivers.
7798 *) As with "ERR", make it possible to replace the underlying "ex_data"
7799 functions. This change also alters the storage and management of global
7800 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
7801 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
7802 index counters. The API functions that use this state have been changed
7803 to take a "class_index" rather than pointers to the class's local STACK
7804 and counter, and there is now an API function to dynamically create new
7805 classes. This centralisation allows us to (a) plug a lot of the
7806 thread-safety problems that existed, and (b) makes it possible to clean
7807 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
7808 such data would previously have always leaked in application code and
7809 workarounds were in place to make the memory debugging turn a blind eye
7810 to it. Application code that doesn't use this new function will still
7811 leak as before, but their memory debugging output will announce it now
7812 rather than letting it slide.
7814 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
7815 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
7816 has a return value to indicate success or failure.
7819 *) Make it possible to replace the underlying "ERR" functions such that the
7820 global state (2 LHASH tables and 2 locks) is only used by the "default"
7821 implementation. This change also adds two functions to "get" and "set"
7822 the implementation prior to it being automatically set the first time
7823 any other ERR function takes place. Ie. an application can call "get",
7824 pass the return value to a module it has just loaded, and that module
7825 can call its own "set" function using that value. This means the
7826 module's "ERR" operations will use (and modify) the error state in the
7827 application and not in its own statically linked copy of OpenSSL code.
7830 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
7831 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
7832 the operation, and provides a more encapsulated way for external code
7833 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
7834 to use these functions rather than manually incrementing the counts.
7836 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
7839 *) Add EVP test program.
7842 *) Add symmetric cipher support to ENGINE. Expect the API to change!
7845 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
7846 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
7847 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
7848 These allow a CRL to be built without having to access X509_CRL fields
7849 directly. Modify 'ca' application to use new functions.
7852 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
7853 bug workarounds. Rollback attack detection is a security feature.
7854 The problem will only arise on OpenSSL servers when TLSv1 is not
7855 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
7856 Software authors not wanting to support TLSv1 will have special reasons
7857 for their choice and can explicitly enable this option.
7858 [Bodo Moeller, Lutz Jaenicke]
7860 *) Rationalise EVP so it can be extended: don't include a union of
7861 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
7862 (similar to those existing for EVP_CIPHER_CTX).
7867 EVP_MD_CTX_init(&md); /* new function call */
7868 EVP_DigestInit(&md, EVP_sha1());
7869 EVP_DigestUpdate(&md, in, len);
7870 EVP_DigestFinal(&md, out, NULL);
7871 EVP_MD_CTX_cleanup(&md); /* new function call */
7875 *) Make DES key schedule conform to the usual scheme, as well as
7876 correcting its structure. This means that calls to DES functions
7877 now have to pass a pointer to a des_key_schedule instead of a
7878 plain des_key_schedule (which was actually always a pointer
7881 des_key_schedule ks;
7883 des_set_key_checked(..., &ks);
7884 des_ncbc_encrypt(..., &ks, ...);
7886 (Note that a later change renames 'des_...' into 'DES_...'.)
7889 *) Initial reduction of linker bloat: the use of some functions, such as
7890 PEM causes large amounts of unused functions to be linked in due to
7891 poor organisation. For example pem_all.c contains every PEM function
7892 which has a knock on effect of linking in large amounts of (unused)
7893 ASN1 code. Grouping together similar functions and splitting unrelated
7894 functions prevents this.
7897 *) Cleanup of EVP macros.
7900 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
7901 correct _ecb suffix.
7904 *) Add initial OCSP responder support to ocsp application. The
7905 revocation information is handled using the text based index
7906 use by the ca application. The responder can either handle
7907 requests generated internally, supplied in files (for example
7908 via a CGI script) or using an internal minimal server.
7911 *) Add configuration choices to get zlib compression for TLS.
7914 *) Changes to Kerberos SSL for RFC 2712 compliance:
7915 1. Implemented real KerberosWrapper, instead of just using
7916 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
7917 2. Implemented optional authenticator field of KerberosWrapper.
7919 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
7920 and authenticator structs; see crypto/krb5/.
7922 Generalized Kerberos calls to support multiple Kerberos libraries.
7923 [Vern Staats <staatsvr@asc.hpc.mil>,
7924 Jeffrey Altman <jaltman@columbia.edu>
7925 via Richard Levitte]
7927 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
7928 already does with RSA. testdsa.h now has 'priv_key/pub_key'
7929 values for each of the key sizes rather than having just
7930 parameters (and 'speed' generating keys each time).
7933 *) Speed up EVP routines.
7936 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
7937 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
7938 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
7939 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
7941 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
7942 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
7943 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
7946 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
7948 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
7951 *) Added the OS2-EMX target.
7952 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
7954 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
7955 to support NCONF routines in extension code. New function CONF_set_nconf()
7956 to allow functions which take an NCONF to also handle the old LHASH
7957 structure: this means that the old CONF compatible routines can be
7958 retained (in particular wrt extensions) without having to duplicate the
7959 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
7962 *) Enhance the general user interface with mechanisms for inner control
7963 and with possibilities to have yes/no kind of prompts.
7966 *) Change all calls to low level digest routines in the library and
7967 applications to use EVP. Add missing calls to HMAC_cleanup() and
7968 don't assume HMAC_CTX can be copied using memcpy().
7969 [Verdon Walker <VWalker@novell.com>, Steve Henson]
7971 *) Add the possibility to control engines through control names but with
7972 arbitrary arguments instead of just a string.
7973 Change the key loaders to take a UI_METHOD instead of a callback
7974 function pointer. NOTE: this breaks binary compatibility with earlier
7975 versions of OpenSSL [engine].
7976 Adapt the nCipher code for these new conditions and add a card insertion
7980 *) Enhance the general user interface with mechanisms to better support
7981 dialog box interfaces, application-defined prompts, the possibility
7982 to use defaults (for example default passwords from somewhere else)
7983 and interrupts/cancellations.
7986 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
7987 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
7990 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
7991 tidy up some unnecessarily weird code in 'sk_new()').
7992 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
7994 *) Change the key loading routines for ENGINEs to use the same kind
7995 callback (pem_password_cb) as all other routines that need this
7999 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
8000 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
8001 than this minimum value is recommended.
8004 *) New random seeder for OpenVMS, using the system process statistics
8005 that are easily reachable.
8008 *) Windows apparently can't transparently handle global
8009 variables defined in DLLs. Initialisations such as:
8011 const ASN1_ITEM *it = &ASN1_INTEGER_it;
8013 won't compile. This is used by the any applications that need to
8014 declare their own ASN1 modules. This was fixed by adding the option
8015 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
8016 needed for static libraries under Win32.
8019 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
8020 setting of purpose and trust fields. New X509_STORE trust and
8021 purpose functions and tidy up setting in other SSL functions.
8024 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
8025 structure. These are inherited by X509_STORE_CTX when it is
8026 initialised. This allows various defaults to be set in the
8027 X509_STORE structure (such as flags for CRL checking and custom
8028 purpose or trust settings) for functions which only use X509_STORE_CTX
8029 internally such as S/MIME.
8031 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
8032 trust settings if they are not set in X509_STORE. This allows X509_STORE
8033 purposes and trust (in S/MIME for example) to override any set by default.
8035 Add command line options for CRL checking to smime, s_client and s_server
8039 *) Initial CRL based revocation checking. If the CRL checking flag(s)
8040 are set then the CRL is looked up in the X509_STORE structure and
8041 its validity and signature checked, then if the certificate is found
8042 in the CRL the verify fails with a revoked error.
8044 Various new CRL related callbacks added to X509_STORE_CTX structure.
8046 Command line options added to 'verify' application to support this.
8048 This needs some additional work, such as being able to handle multiple
8049 CRLs with different times, extension based lookup (rather than just
8050 by subject name) and ultimately more complete V2 CRL extension
8054 *) Add a general user interface API (crypto/ui/). This is designed
8055 to replace things like des_read_password and friends (backward
8056 compatibility functions using this new API are provided).
8057 The purpose is to remove prompting functions from the DES code
8058 section as well as provide for prompting through dialog boxes in
8059 a window system and the like.
8062 *) Add "ex_data" support to ENGINE so implementations can add state at a
8063 per-structure level rather than having to store it globally.
8066 *) Make it possible for ENGINE structures to be copied when retrieved by
8067 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
8068 This causes the "original" ENGINE structure to act like a template,
8069 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
8070 operational state can be localised to each ENGINE structure, despite the
8071 fact they all share the same "methods". New ENGINE structures returned in
8072 this case have no functional references and the return value is the single
8073 structural reference. This matches the single structural reference returned
8074 by ENGINE_by_id() normally, when it is incremented on the pre-existing
8078 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
8079 needs to match any other type at all we need to manually clear the
8083 *) Changes to the "openssl engine" utility to include;
8084 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
8085 about an ENGINE's available control commands.
8086 - executing control commands from command line arguments using the
8087 '-pre' and '-post' switches. '-post' is only used if '-t' is
8088 specified and the ENGINE is successfully initialised. The syntax for
8089 the individual commands are colon-separated, for example;
8090 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
8093 *) New dynamic control command support for ENGINEs. ENGINEs can now
8094 declare their own commands (numbers), names (strings), descriptions,
8095 and input types for run-time discovery by calling applications. A
8096 subset of these commands are implicitly classed as "executable"
8097 depending on their input type, and only these can be invoked through
8098 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
8099 can be based on user input, config files, etc). The distinction is
8100 that "executable" commands cannot return anything other than a boolean
8101 result and can only support numeric or string input, whereas some
8102 discoverable commands may only be for direct use through
8103 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
8104 pointers, or other custom uses. The "executable" commands are to
8105 support parameterisations of ENGINE behaviour that can be
8106 unambiguously defined by ENGINEs and used consistently across any
8107 OpenSSL-based application. Commands have been added to all the
8108 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
8109 control over shared-library paths without source code alterations.
8112 *) Changed all ENGINE implementations to dynamically allocate their
8113 ENGINEs rather than declaring them statically. Apart from this being
8114 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
8115 this also allows the implementations to compile without using the
8116 internal engine_int.h header.
8119 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
8120 'const' value. Any code that should be able to modify a RAND_METHOD
8121 should already have non-const pointers to it (ie. they should only
8122 modify their own ones).
8125 *) Made a variety of little tweaks to the ENGINE code.
8126 - "atalla" and "ubsec" string definitions were moved from header files
8127 to C code. "nuron" string definitions were placed in variables
8128 rather than hard-coded - allowing parameterisation of these values
8129 later on via ctrl() commands.
8130 - Removed unused "#if 0"'d code.
8131 - Fixed engine list iteration code so it uses ENGINE_free() to release
8132 structural references.
8133 - Constified the RAND_METHOD element of ENGINE structures.
8134 - Constified various get/set functions as appropriate and added
8135 missing functions (including a catch-all ENGINE_cpy that duplicates
8136 all ENGINE values onto a new ENGINE except reference counts/state).
8137 - Removed NULL parameter checks in get/set functions. Setting a method
8138 or function to NULL is a way of cancelling out a previously set
8139 value. Passing a NULL ENGINE parameter is just plain stupid anyway
8140 and doesn't justify the extra error symbols and code.
8141 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
8142 flags from engine_int.h to engine.h.
8143 - Changed prototypes for ENGINE handler functions (init(), finish(),
8144 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
8147 *) Implement binary inversion algorithm for BN_mod_inverse in addition
8148 to the algorithm using long division. The binary algorithm can be
8149 used only if the modulus is odd. On 32-bit systems, it is faster
8150 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
8151 roughly 5-15% for 256-bit moduli), so we use it only for moduli
8152 up to 450 bits. In 64-bit environments, the binary algorithm
8153 appears to be advantageous for much longer moduli; here we use it
8154 for moduli up to 2048 bits.
8157 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
8158 could not support the combine flag in choice fields.
8161 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
8162 extensions from a certificate request to the certificate.
8165 *) Allow multiple 'certopt' and 'nameopt' options to be separated
8166 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
8167 file: this allows the display of the certificate about to be
8168 signed to be customised, to allow certain fields to be included
8169 or excluded and extension details. The old system didn't display
8170 multicharacter strings properly, omitted fields not in the policy
8171 and couldn't display additional details such as extensions.
8174 *) Function EC_POINTs_mul for multiple scalar multiplication
8175 of an arbitrary number of elliptic curve points
8176 \sum scalars[i]*points[i],
8177 optionally including the generator defined for the EC_GROUP:
8178 scalar*generator + \sum scalars[i]*points[i].
8180 EC_POINT_mul is a simple wrapper function for the typical case
8181 that the point list has just one item (besides the optional
8185 *) First EC_METHODs for curves over GF(p):
8187 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
8188 operations and provides various method functions that can also
8189 operate with faster implementations of modular arithmetic.
8191 EC_GFp_mont_method() reuses most functions that are part of
8192 EC_GFp_simple_method, but uses Montgomery arithmetic.
8194 [Bodo Moeller; point addition and point doubling
8195 implementation directly derived from source code provided by
8196 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
8198 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
8199 crypto/ec/ec_lib.c):
8201 Curves are EC_GROUP objects (with an optional group generator)
8202 based on EC_METHODs that are built into the library.
8204 Points are EC_POINT objects based on EC_GROUP objects.
8206 Most of the framework would be able to handle curves over arbitrary
8207 finite fields, but as there are no obvious types for fields other
8208 than GF(p), some functions are limited to that for now.
8211 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
8212 that the file contains a complete HTTP response.
8215 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
8216 change the def and num file printf format specifier from "%-40sXXX"
8217 to "%-39s XXX". The latter will always guarantee a space after the
8218 field while the former will cause them to run together if the field
8219 is 40 of more characters long.
8222 *) Constify the cipher and digest 'method' functions and structures
8223 and modify related functions to take constant EVP_MD and EVP_CIPHER
8227 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
8228 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
8231 *) Modify EVP_Digest*() routines so they now return values. Although the
8232 internal software routines can never fail additional hardware versions
8236 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
8238 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
8239 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
8242 ERR_R_NESTED_ASN1_ERROR
8244 ERR_R_MISSING_ASN1_EOS
8245 were 4 .. 9, conflicting with
8246 ERR_LIB_RSA (= ERR_R_RSA_LIB)
8248 ERR_LIB_PEM (= ERR_R_PEM_LIB).
8249 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
8251 Add new error code 'ERR_R_INTERNAL_ERROR'.
8254 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
8258 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
8259 sets the subject name for a new request or supersedes the
8260 subject name in a given request. Formats that can be parsed are
8261 'CN=Some Name, OU=myOU, C=IT'
8263 'CN=Some Name/OU=myOU/C=IT'.
8265 Add options '-batch' and '-verbose' to 'openssl req'.
8266 [Massimiliano Pala <madwolf@hackmasters.net>]
8268 *) Introduce the possibility to access global variables through
8269 functions on platform were that's the best way to handle exporting
8270 global variables in shared libraries. To enable this functionality,
8271 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
8272 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
8273 is normally done by Configure or something similar).
8275 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
8276 in the source file (foo.c) like this:
8278 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
8279 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
8281 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
8282 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
8284 OPENSSL_DECLARE_GLOBAL(int,foo);
8285 #define foo OPENSSL_GLOBAL_REF(foo)
8286 OPENSSL_DECLARE_GLOBAL(double,bar);
8287 #define bar OPENSSL_GLOBAL_REF(bar)
8289 The #defines are very important, and therefore so is including the
8290 header file everywhere where the defined globals are used.
8292 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
8293 of ASN.1 items, but that structure is a bit different.
8295 The largest change is in util/mkdef.pl which has been enhanced with
8296 better and easier to understand logic to choose which symbols should
8297 go into the Windows .def files as well as a number of fixes and code
8298 cleanup (among others, algorithm keywords are now sorted
8299 lexicographically to avoid constant rewrites).
8302 *) In BN_div() keep a copy of the sign of 'num' before writing the
8303 result to 'rm' because if rm==num the value will be overwritten
8304 and produce the wrong result if 'num' is negative: this caused
8305 problems with BN_mod() and BN_nnmod().
8308 *) Function OCSP_request_verify(). This checks the signature on an
8309 OCSP request and verifies the signer certificate. The signer
8310 certificate is just checked for a generic purpose and OCSP request
8314 *) Add OCSP_check_validity() function to check the validity of OCSP
8315 responses. OCSP responses are prepared in real time and may only
8316 be a few seconds old. Simply checking that the current time lies
8317 between thisUpdate and nextUpdate max reject otherwise valid responses
8318 caused by either OCSP responder or client clock inaccuracy. Instead
8319 we allow thisUpdate and nextUpdate to fall within a certain period of
8320 the current time. The age of the response can also optionally be
8321 checked. Two new options -validity_period and -status_age added to
8325 *) If signature or public key algorithm is unrecognized print out its
8326 OID rather that just UNKNOWN.
8329 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
8330 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
8331 ID to be generated from the issuer certificate alone which can then be
8332 passed to OCSP_id_issuer_cmp().
8335 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
8336 ASN1 modules to export functions returning ASN1_ITEM pointers
8337 instead of the ASN1_ITEM structures themselves. This adds several
8338 new macros which allow the underlying ASN1 function/structure to
8339 be accessed transparently. As a result code should not use ASN1_ITEM
8340 references directly (such as &X509_it) but instead use the relevant
8341 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
8342 use of the new ASN1 code on platforms where exporting structures
8343 is problematical (for example in shared libraries) but exporting
8344 functions returning pointers to structures is not.
8347 *) Add support for overriding the generation of SSL/TLS session IDs.
8348 These callbacks can be registered either in an SSL_CTX or per SSL.
8349 The purpose of this is to allow applications to control, if they wish,
8350 the arbitrary values chosen for use as session IDs, particularly as it
8351 can be useful for session caching in multiple-server environments. A
8352 command-line switch for testing this (and any client code that wishes
8353 to use such a feature) has been added to "s_server".
8354 [Geoff Thorpe, Lutz Jaenicke]
8356 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
8357 of the form '#if defined(...) || defined(...) || ...' and
8358 '#if !defined(...) && !defined(...) && ...'. This also avoids
8359 the growing number of special cases it was previously handling.
8362 *) Make all configuration macros available for application by making
8363 sure they are available in opensslconf.h, by giving them names starting
8364 with "OPENSSL_" to avoid conflicts with other packages and by making
8365 sure e_os2.h will cover all platform-specific cases together with
8367 Additionally, it is now possible to define configuration/platform-
8368 specific names (called "system identities"). In the C code, these
8369 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
8370 macro with the name beginning with "OPENSSL_SYS_", which is determined
8371 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
8375 *) New option -set_serial to 'req' and 'x509' this allows the serial
8376 number to use to be specified on the command line. Previously self
8377 signed certificates were hard coded with serial number 0 and the
8378 CA options of 'x509' had to use a serial number in a file which was
8382 *) New options to 'ca' utility to support V2 CRL entry extensions.
8383 Currently CRL reason, invalidity date and hold instruction are
8384 supported. Add new CRL extensions to V3 code and some new objects.
8387 *) New function EVP_CIPHER_CTX_set_padding() this is used to
8388 disable standard block padding (aka PKCS#5 padding) in the EVP
8389 API, which was previously mandatory. This means that the data is
8390 not padded in any way and so the total length much be a multiple
8391 of the block size, otherwise an error occurs.
8394 *) Initial (incomplete) OCSP SSL support.
8397 *) New function OCSP_parse_url(). This splits up a URL into its host,
8398 port and path components: primarily to parse OCSP URLs. New -url
8399 option to ocsp utility.
8402 *) New nonce behavior. The return value of OCSP_check_nonce() now
8403 reflects the various checks performed. Applications can decide
8404 whether to tolerate certain situations such as an absent nonce
8405 in a response when one was present in a request: the ocsp application
8406 just prints out a warning. New function OCSP_add1_basic_nonce()
8407 this is to allow responders to include a nonce in a response even if
8408 the request is nonce-less.
8411 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
8412 skipped when using openssl x509 multiple times on a single input file,
8413 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
8416 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
8417 set string type: to handle setting ASN1_TIME structures. Fix ca
8418 utility to correctly initialize revocation date of CRLs.
8421 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
8422 the clients preferred ciphersuites and rather use its own preferences.
8423 Should help to work around M$ SGC (Server Gated Cryptography) bug in
8424 Internet Explorer by ensuring unchanged hash method during stepup.
8425 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
8428 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
8429 to aes and add a new 'exist' option to print out symbols that don't
8433 *) Additional options to ocsp utility to allow flags to be set and
8434 additional certificates supplied.
8437 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
8438 OCSP client a number of certificate to only verify the response
8442 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
8443 handle the new API. Currently only ECB, CBC modes supported. Add new
8446 Add TLS AES ciphersuites as described in RFC3268, "Advanced
8447 Encryption Standard (AES) Ciphersuites for Transport Layer
8448 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
8449 not enabled by default and were not part of the "ALL" ciphersuite
8450 alias because they were not yet official; they could be
8451 explicitly requested by specifying the "AESdraft" ciphersuite
8452 group alias. In the final release of OpenSSL 0.9.7, the group
8453 alias is called "AES" and is part of "ALL".)
8454 [Ben Laurie, Steve Henson, Bodo Moeller]
8456 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
8457 request to response.
8460 *) Functions for OCSP responders. OCSP_request_onereq_count(),
8461 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
8462 extract information from a certificate request. OCSP_response_create()
8463 creates a response and optionally adds a basic response structure.
8464 OCSP_basic_add1_status() adds a complete single response to a basic
8465 response and returns the OCSP_SINGLERESP structure just added (to allow
8466 extensions to be included for example). OCSP_basic_add1_cert() adds a
8467 certificate to a basic response and OCSP_basic_sign() signs a basic
8468 response with various flags. New helper functions ASN1_TIME_check()
8469 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
8470 (converts ASN1_TIME to GeneralizedTime).
8473 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
8474 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
8475 structure from a certificate. X509_pubkey_digest() digests the public_key
8476 contents: this is used in various key identifiers.
8479 *) Make sk_sort() tolerate a NULL argument.
8480 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
8482 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
8483 passed by the function are trusted implicitly. If any of them signed the
8484 response then it is assumed to be valid and is not verified.
8487 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
8488 to data. This was previously part of the PKCS7 ASN1 code. This
8489 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
8490 [Steve Henson, reported by Kenneth R. Robinette
8491 <support@securenetterm.com>]
8493 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
8494 routines: without these tracing memory leaks is very painful.
8495 Fix leaks in PKCS12 and PKCS7 routines.
8498 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
8499 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
8500 effectively meant GeneralizedTime would never be used. Now it
8501 is initialised to -1 but X509_time_adj() now has to check the value
8502 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
8503 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
8504 [Steve Henson, reported by Kenneth R. Robinette
8505 <support@securenetterm.com>]
8507 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
8508 result in a zero length in the ASN1_INTEGER structure which was
8509 not consistent with the structure when d2i_ASN1_INTEGER() was used
8510 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
8511 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
8512 where it did not print out a minus for negative ASN1_INTEGER.
8515 *) Add summary printout to ocsp utility. The various functions which
8516 convert status values to strings have been renamed to:
8517 OCSP_response_status_str(), OCSP_cert_status_str() and
8518 OCSP_crl_reason_str() and are no longer static. New options
8519 to verify nonce values and to disable verification. OCSP response
8520 printout format cleaned up.
8523 *) Add additional OCSP certificate checks. These are those specified
8524 in RFC2560. This consists of two separate checks: the CA of the
8525 certificate being checked must either be the OCSP signer certificate
8526 or the issuer of the OCSP signer certificate. In the latter case the
8527 OCSP signer certificate must contain the OCSP signing extended key
8528 usage. This check is performed by attempting to match the OCSP
8529 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
8530 in the OCSP_CERTID structures of the response.
8533 *) Initial OCSP certificate verification added to OCSP_basic_verify()
8534 and related routines. This uses the standard OpenSSL certificate
8535 verify routines to perform initial checks (just CA validity) and
8536 to obtain the certificate chain. Then additional checks will be
8537 performed on the chain. Currently the root CA is checked to see
8538 if it is explicitly trusted for OCSP signing. This is used to set
8539 a root CA as a global signing root: that is any certificate that
8540 chains to that CA is an acceptable OCSP signing certificate.
8543 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
8544 extensions from a separate configuration file.
8545 As when reading extensions from the main configuration file,
8546 the '-extensions ...' option may be used for specifying the
8548 [Massimiliano Pala <madwolf@comune.modena.it>]
8550 *) New OCSP utility. Allows OCSP requests to be generated or
8551 read. The request can be sent to a responder and the output
8552 parsed, outputed or printed in text form. Not complete yet:
8553 still needs to check the OCSP response validity.
8556 *) New subcommands for 'openssl ca':
8557 'openssl ca -status <serial>' prints the status of the cert with
8558 the given serial number (according to the index file).
8559 'openssl ca -updatedb' updates the expiry status of certificates
8561 [Massimiliano Pala <madwolf@comune.modena.it>]
8563 *) New '-newreq-nodes' command option to CA.pl. This is like
8564 '-newreq', but calls 'openssl req' with the '-nodes' option
8565 so that the resulting key is not encrypted.
8566 [Damien Miller <djm@mindrot.org>]
8568 *) New configuration for the GNU Hurd.
8569 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
8571 *) Initial code to implement OCSP basic response verify. This
8572 is currently incomplete. Currently just finds the signer's
8573 certificate and verifies the signature on the response.
8576 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
8577 value of OPENSSLDIR. This is available via the new '-d' option
8578 to 'openssl version', and is also included in 'openssl version -a'.
8581 *) Allowing defining memory allocation callbacks that will be given
8582 file name and line number information in additional arguments
8583 (a const char* and an int). The basic functionality remains, as
8584 well as the original possibility to just replace malloc(),
8585 realloc() and free() by functions that do not know about these
8586 additional arguments. To register and find out the current
8587 settings for extended allocation functions, the following
8588 functions are provided:
8590 CRYPTO_set_mem_ex_functions
8591 CRYPTO_set_locked_mem_ex_functions
8592 CRYPTO_get_mem_ex_functions
8593 CRYPTO_get_locked_mem_ex_functions
8595 These work the same way as CRYPTO_set_mem_functions and friends.
8596 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
8597 extended allocation function is enabled.
8598 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
8599 a conventional allocation function is enabled.
8600 [Richard Levitte, Bodo Moeller]
8602 *) Finish off removing the remaining LHASH function pointer casts.
8603 There should no longer be any prototype-casting required when using
8604 the LHASH abstraction, and any casts that remain are "bugs". See
8605 the callback types and macros at the head of lhash.h for details
8606 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
8609 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
8610 If /dev/[u]random devices are not available or do not return enough
8611 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
8613 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
8614 /etc/entropy will be queried once each in this sequence, querying stops
8615 when enough entropy was collected without querying more sockets.
8618 *) Change the Unix RAND_poll() variant to be able to poll several
8619 random devices, as specified by DEVRANDOM, until a sufficient amount
8620 of data has been collected. We spend at most 10 ms on each file
8621 (select timeout) and read in non-blocking mode. DEVRANDOM now
8622 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
8623 (previously it was just the string "/dev/urandom"), so on typical
8624 platforms the 10 ms delay will never occur.
8625 Also separate out the Unix variant to its own file, rand_unix.c.
8626 For VMS, there's a currently-empty rand_vms.c.
8629 *) Move OCSP client related routines to ocsp_cl.c. These
8630 provide utility functions which an application needing
8631 to issue a request to an OCSP responder and analyse the
8632 response will typically need: as opposed to those which an
8633 OCSP responder itself would need which will be added later.
8635 OCSP_request_sign() signs an OCSP request with an API similar
8636 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
8637 response. OCSP_response_get1_basic() extracts basic response
8638 from response. OCSP_resp_find_status(): finds and extracts status
8639 information from an OCSP_CERTID structure (which will be created
8640 when the request structure is built). These are built from lower
8641 level functions which work on OCSP_SINGLERESP structures but
8642 won't normally be used unless the application wishes to examine
8643 extensions in the OCSP response for example.
8645 Replace nonce routines with a pair of functions.
8646 OCSP_request_add1_nonce() adds a nonce value and optionally
8647 generates a random value. OCSP_check_nonce() checks the
8648 validity of the nonce in an OCSP response.
8651 *) Change function OCSP_request_add() to OCSP_request_add0_id().
8652 This doesn't copy the supplied OCSP_CERTID and avoids the
8653 need to free up the newly created id. Change return type
8654 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
8655 This can then be used to add extensions to the request.
8656 Deleted OCSP_request_new(), since most of its functionality
8657 is now in OCSP_REQUEST_new() (and the case insensitive name
8658 clash) apart from the ability to set the request name which
8659 will be added elsewhere.
8662 *) Update OCSP API. Remove obsolete extensions argument from
8663 various functions. Extensions are now handled using the new
8664 OCSP extension code. New simple OCSP HTTP function which
8665 can be used to send requests and parse the response.
8668 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
8669 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
8670 uses the special reorder version of SET OF to sort the attributes
8671 and reorder them to match the encoded order. This resolves a long
8672 standing problem: a verify on a PKCS7 structure just after signing
8673 it used to fail because the attribute order did not match the
8674 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
8675 it uses the received order. This is necessary to tolerate some broken
8676 software that does not order SET OF. This is handled by encoding
8677 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
8678 to produce the required SET OF.
8681 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
8682 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
8683 files to get correct declarations of the ASN.1 item variables.
8686 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
8687 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
8688 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
8689 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
8690 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
8691 ASN1_ITEM and no wrapper functions.
8694 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
8695 replace the old function pointer based I/O routines. Change most of
8696 the *_d2i_bio() and *_d2i_fp() functions to use these.
8699 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
8700 lines, recognize more "algorithms" that can be deselected, and make
8701 it complain about algorithm deselection that isn't recognised.
8704 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
8705 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
8706 to use new functions. Add NO_ASN1_OLD which can be set to remove
8707 some old style ASN1 functions: this can be used to determine if old
8708 code will still work when these eventually go away.
8711 *) New extension functions for OCSP structures, these follow the
8712 same conventions as certificates and CRLs.
8715 *) New function X509V3_add1_i2d(). This automatically encodes and
8716 adds an extension. Its behaviour can be customised with various
8717 flags to append, replace or delete. Various wrappers added for
8718 certificates and CRLs.
8721 *) Fix to avoid calling the underlying ASN1 print routine when
8722 an extension cannot be parsed. Correct a typo in the
8723 OCSP_SERVICELOC extension. Tidy up print OCSP format.
8726 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
8727 entries for variables.
8730 *) Add functionality to apps/openssl.c for detecting locking
8731 problems: As the program is single-threaded, all we have
8732 to do is register a locking callback using an array for
8733 storing which locks are currently held by the program.
8736 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
8737 SSL_get_ex_data_X509_STORE_idx(), which is used in
8738 ssl_verify_cert_chain() and thus can be called at any time
8739 during TLS/SSL handshakes so that thread-safety is essential.
8740 Unfortunately, the ex_data design is not at all suited
8741 for multi-threaded use, so it probably should be abolished.
8744 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
8745 [Broadcom, tweaked and integrated by Geoff Thorpe]
8747 *) Move common extension printing code to new function
8748 X509V3_print_extensions(). Reorganise OCSP print routines and
8749 implement some needed OCSP ASN1 functions. Add OCSP extensions.
8752 *) New function X509_signature_print() to remove duplication in some
8756 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
8757 set (this was treated exactly the same as SET OF previously). This
8758 is used to reorder the STACK representing the structure to match the
8759 encoding. This will be used to get round a problem where a PKCS7
8760 structure which was signed could not be verified because the STACK
8761 order did not reflect the encoded order.
8764 *) Reimplement the OCSP ASN1 module using the new code.
8767 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
8768 for its ASN1 operations. The old style function pointers still exist
8769 for now but they will eventually go away.
8772 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
8773 completely replaces the old ASN1 functionality with a table driven
8774 encoder and decoder which interprets an ASN1_ITEM structure describing
8775 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
8776 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
8777 has also been converted to the new form.
8780 *) Change BN_mod_exp_recp so that negative moduli are tolerated
8781 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
8782 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
8783 for negative moduli.
8786 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
8787 of not touching the result's sign bit.
8790 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
8794 *) Changed the LHASH code to use prototypes for callbacks, and created
8795 macros to declare and implement thin (optionally static) functions
8796 that provide type-safety and avoid function pointer casting for the
8797 type-specific callbacks.
8800 *) Added Kerberos Cipher Suites to be used with TLS, as written in
8802 [Veers Staats <staatsvr@asc.hpc.mil>,
8803 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
8805 *) Reformat the FAQ so the different questions and answers can be divided
8806 in sections depending on the subject.
8809 *) Have the zlib compression code load ZLIB.DLL dynamically under
8813 *) New function BN_mod_sqrt for computing square roots modulo a prime
8814 (using the probabilistic Tonelli-Shanks algorithm unless
8815 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
8816 be handled deterministically).
8817 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
8819 *) Make BN_mod_inverse faster by explicitly handling small quotients
8820 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
8821 512 bits], about 30% for larger ones [1024 or 2048 bits].)
8824 *) New function BN_kronecker.
8827 *) Fix BN_gcd so that it works on negative inputs; the result is
8828 positive unless both parameters are zero.
8829 Previously something reasonably close to an infinite loop was
8830 possible because numbers could be growing instead of shrinking
8831 in the implementation of Euclid's algorithm.
8834 *) Fix BN_is_word() and BN_is_one() macros to take into account the
8835 sign of the number in question.
8837 Fix BN_is_word(a,w) to work correctly for w == 0.
8839 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
8840 because its test if the absolute value of 'a' equals 'w'.
8841 Note that BN_abs_is_word does *not* handle w == 0 reliably;
8842 it exists mostly for use in the implementations of BN_is_zero(),
8843 BN_is_one(), and BN_is_word().
8846 *) New function BN_swap.
8849 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
8850 the exponentiation functions are more likely to produce reasonable
8851 results on negative inputs.
8854 *) Change BN_mod_mul so that the result is always non-negative.
8855 Previously, it could be negative if one of the factors was negative;
8856 I don't think anyone really wanted that behaviour.
8859 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
8860 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
8861 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
8862 and add new functions:
8871 BN_mod_lshift1_quick
8875 These functions always generate non-negative results.
8877 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
8878 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
8880 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
8881 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
8882 be reduced modulo m.
8883 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
8886 The following entry accidentally appeared in the CHANGES file
8887 distributed with OpenSSL 0.9.7. The modifications described in
8888 it do *not* apply to OpenSSL 0.9.7.
8890 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
8891 was actually never needed) and in BN_mul(). The removal in BN_mul()
8892 required a small change in bn_mul_part_recursive() and the addition
8893 of the functions bn_cmp_part_words(), bn_sub_part_words() and
8894 bn_add_part_words(), which do the same thing as bn_cmp_words(),
8895 bn_sub_words() and bn_add_words() except they take arrays with
8900 *) In 'openssl passwd', verify passwords read from the terminal
8901 unless the '-salt' option is used (which usually means that
8902 verification would just waste user's time since the resulting
8903 hash is going to be compared with some given password hash)
8904 or the new '-noverify' option is used.
8906 This is an incompatible change, but it does not affect
8907 non-interactive use of 'openssl passwd' (passwords on the command
8908 line, '-stdin' option, '-in ...' option) and thus should not
8912 *) Remove all references to RSAref, since there's no more need for it.
8915 *) Make DSO load along a path given through an environment variable
8916 (SHLIB_PATH) with shl_load().
8919 *) Constify the ENGINE code as a result of BIGNUM constification.
8920 Also constify the RSA code and most things related to it. In a
8921 few places, most notable in the depth of the ASN.1 code, ugly
8922 casts back to non-const were required (to be solved at a later
8926 *) Make it so the openssl application has all engines loaded by default.
8929 *) Constify the BIGNUM routines a little more.
8932 *) Add the following functions:
8934 ENGINE_load_cswift()
8936 ENGINE_load_atalla()
8938 ENGINE_load_builtin_engines()
8940 That way, an application can itself choose if external engines that
8941 are built-in in OpenSSL shall ever be used or not. The benefit is
8942 that applications won't have to be linked with libdl or other dso
8943 libraries unless it's really needed.
8945 Changed 'openssl engine' to load all engines on demand.
8946 Changed the engine header files to avoid the duplication of some
8947 declarations (they differed!).
8950 *) 'openssl engine' can now list capabilities.
8953 *) Better error reporting in 'openssl engine'.
8956 *) Never call load_dh_param(NULL) in s_server.
8959 *) Add engine application. It can currently list engines by name and
8960 identity, and test if they are actually available.
8963 *) Improve RPM specification file by forcing symbolic linking and making
8964 sure the installed documentation is also owned by root.root.
8965 [Damien Miller <djm@mindrot.org>]
8967 *) Give the OpenSSL applications more possibilities to make use of
8968 keys (public as well as private) handled by engines.
8971 *) Add OCSP code that comes from CertCo.
8974 *) Add VMS support for the Rijndael code.
8977 *) Added untested support for Nuron crypto accelerator.
8980 *) Add support for external cryptographic devices. This code was
8981 previously distributed separately as the "engine" branch.
8982 [Geoff Thorpe, Richard Levitte]
8984 *) Rework the filename-translation in the DSO code. It is now possible to
8985 have far greater control over how a "name" is turned into a filename
8986 depending on the operating environment and any oddities about the
8987 different shared library filenames on each system.
8990 *) Support threads on FreeBSD-elf in Configure.
8993 *) Fix for SHA1 assembly problem with MASM: it produces
8994 warnings about corrupt line number information when assembling
8995 with debugging information. This is caused by the overlapping
8997 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
9000 NCONF_get_number() has no error checking at all. As a replacement,
9001 NCONF_get_number_e() is defined (_e for "error checking") and is
9002 promoted strongly. The old NCONF_get_number is kept around for
9003 binary backward compatibility.
9004 Make it possible for methods to load from something other than a BIO,
9005 by providing a function pointer that is given a name instead of a BIO.
9006 For example, this could be used to load configuration data from an
9010 *) Fix for non blocking accept BIOs. Added new I/O special reason
9011 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
9012 with non blocking I/O was not possible because no retry code was
9013 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
9017 *) Added the beginnings of Rijndael support.
9020 *) Fix for bug in DirectoryString mask setting. Add support for
9021 X509_NAME_print_ex() in 'req' and X509_print_ex() function
9022 to allow certificate printing to more controllable, additional
9023 'certopt' option to 'x509' to allow new printing options to be
9027 *) Clean old EAY MD5 hack from e_os.h.
9030 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
9032 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
9033 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
9034 [Joe Orton, Steve Henson]
9036 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
9038 *) Fix additional bug revealed by the NISCC test suite:
9040 Stop bug triggering large recursion when presented with
9041 certain ASN.1 tags (CVE-2003-0851)
9044 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
9046 *) Fix various bugs revealed by running the NISCC test suite:
9048 Stop out of bounds reads in the ASN1 code when presented with
9049 invalid tags (CVE-2003-0543 and CVE-2003-0544).
9051 If verify callback ignores invalid public key errors don't try to check
9052 certificate signature with the NULL public key.
9056 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
9057 if the server requested one: as stated in TLS 1.0 and SSL 3.0
9061 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
9062 extra data after the compression methods not only for TLS 1.0
9063 but also for SSL 3.0 (as required by the specification).
9064 [Bodo Moeller; problem pointed out by Matthias Loepfe]
9066 *) Change X509_certificate_type() to mark the key as exported/exportable
9067 when it's 512 *bits* long, not 512 bytes.
9070 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
9072 *) Countermeasure against the Klima-Pokorny-Rosa extension of
9073 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
9074 a protocol version number mismatch like a decryption error
9075 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
9078 *) Turn on RSA blinding by default in the default implementation
9079 to avoid a timing attack. Applications that don't want it can call
9080 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
9081 They would be ill-advised to do so in most cases.
9082 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
9084 *) Change RSA blinding code so that it works when the PRNG is not
9085 seeded (in this case, the secret RSA exponent is abused as
9086 an unpredictable seed -- if it is not unpredictable, there
9087 is no point in blinding anyway). Make RSA blinding thread-safe
9088 by remembering the creator's thread ID in rsa->blinding and
9089 having all other threads use local one-time blinding factors
9090 (this requires more computation than sharing rsa->blinding, but
9091 avoids excessive locking; and if an RSA object is not shared
9092 between threads, blinding will still be very fast).
9095 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
9097 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
9098 via timing by performing a MAC computation even if incorrect
9099 block cipher padding has been found. This is a countermeasure
9100 against active attacks where the attacker has to distinguish
9101 between bad padding and a MAC verification error. (CVE-2003-0078)
9103 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
9104 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
9105 Martin Vuagnoux (EPFL, Ilion)]
9107 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
9109 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
9110 memory from its contents. This is done with a counter that will
9111 place alternating values in each byte. This can be used to solve
9112 two issues: 1) the removal of calls to memset() by highly optimizing
9113 compilers, and 2) cleansing with other values than 0, since those can
9114 be read through on certain media, for example a swap space on disk.
9117 *) Bugfix: client side session caching did not work with external caching,
9118 because the session->cipher setting was not restored when reloading
9119 from the external cache. This problem was masked, when
9120 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
9121 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
9124 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
9125 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
9126 [Zeev Lieber <zeev-l@yahoo.com>]
9128 *) Undo an undocumented change introduced in 0.9.6e which caused
9129 repeated calls to OpenSSL_add_all_ciphers() and
9130 OpenSSL_add_all_digests() to be ignored, even after calling
9134 *) Change the default configuration reader to deal with last line not
9135 being properly terminated.
9138 *) Change X509_NAME_cmp() so it applies the special rules on handling
9139 DN values that are of type PrintableString, as well as RDNs of type
9140 emailAddress where the value has the type ia5String.
9141 [stefank@valicert.com via Richard Levitte]
9143 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
9144 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
9145 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
9146 the bitwise-OR of the two for use by the majority of applications
9147 wanting this behaviour, and update the docs. The documented
9148 behaviour and actual behaviour were inconsistent and had been
9149 changing anyway, so this is more a bug-fix than a behavioural
9151 [Geoff Thorpe, diagnosed by Nadav Har'El]
9153 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
9154 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
9157 *) Fix initialization code race conditions in
9158 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
9159 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
9160 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
9161 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
9162 ssl2_get_cipher_by_char(),
9163 ssl3_get_cipher_by_char().
9164 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
9166 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
9167 the cached sessions are flushed, as the remove_cb() might use ex_data
9168 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
9169 (see [openssl.org #212]).
9170 [Geoff Thorpe, Lutz Jaenicke]
9172 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
9173 length, instead of the encoding length to d2i_ASN1_OBJECT.
9176 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
9178 *) [In 0.9.6g-engine release:]
9179 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
9180 [Lynn Gazis <lgazis@rainbow.com>]
9182 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
9184 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
9185 and get fix the header length calculation.
9186 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
9187 Alon Kantor <alonk@checkpoint.com> (and others),
9190 *) Use proper error handling instead of 'assertions' in buffer
9191 overflow checks added in 0.9.6e. This prevents DoS (the
9192 assertions could call abort()).
9193 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
9195 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
9197 *) Add various sanity checks to asn1_get_length() to reject
9198 the ASN1 length bytes if they exceed sizeof(long), will appear
9199 negative or the content length exceeds the length of the
9201 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9203 *) Fix cipher selection routines: ciphers without encryption had no flags
9204 for the cipher strength set and where therefore not handled correctly
9205 by the selection routines (PR #130).
9208 *) Fix EVP_dsa_sha macro.
9212 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
9213 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
9214 that was added in OpenSSL 0.9.6d.
9216 As the countermeasure turned out to be incompatible with some
9217 broken SSL implementations, the new option is part of SSL_OP_ALL.
9218 SSL_OP_ALL is usually employed when compatibility with weird SSL
9219 implementations is desired (e.g. '-bugs' option to 's_client' and
9220 's_server'), so the new option is automatically set in many
9224 *) Changes in security patch:
9226 Changes marked "(CHATS)" were sponsored by the Defense Advanced
9227 Research Projects Agency (DARPA) and Air Force Research Laboratory,
9228 Air Force Materiel Command, USAF, under agreement number
9231 *) Add various sanity checks to asn1_get_length() to reject
9232 the ASN1 length bytes if they exceed sizeof(long), will appear
9233 negative or the content length exceeds the length of the
9234 supplied buffer. (CVE-2002-0659)
9235 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9237 *) Assertions for various potential buffer overflows, not known to
9239 [Ben Laurie (CHATS)]
9241 *) Various temporary buffers to hold ASCII versions of integers were
9242 too small for 64 bit platforms. (CVE-2002-0655)
9243 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
9245 *) Remote buffer overflow in SSL3 protocol - an attacker could
9246 supply an oversized session ID to a client. (CVE-2002-0656)
9247 [Ben Laurie (CHATS)]
9249 *) Remote buffer overflow in SSL2 protocol - an attacker could
9250 supply an oversized client master key. (CVE-2002-0656)
9251 [Ben Laurie (CHATS)]
9253 Changes between 0.9.6c and 0.9.6d [9 May 2002]
9255 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
9256 encoded as NULL) with id-dsa-with-sha1.
9257 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
9259 *) Check various X509_...() return values in apps/req.c.
9260 [Nils Larsch <nla@trustcenter.de>]
9262 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
9263 an end-of-file condition would erroneously be flagged, when the CRLF
9264 was just at the end of a processed block. The bug was discovered when
9265 processing data through a buffering memory BIO handing the data to a
9266 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
9267 <ptsekov@syntrex.com> and Nedelcho Stanev.
9270 *) Implement a countermeasure against a vulnerability recently found
9271 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
9272 before application data chunks to avoid the use of known IVs
9273 with data potentially chosen by the attacker.
9276 *) Fix length checks in ssl3_get_client_hello().
9279 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
9280 to prevent ssl3_read_internal() from incorrectly assuming that
9281 ssl3_read_bytes() found application data while handshake
9282 processing was enabled when in fact s->s3->in_read_app_data was
9283 merely automatically cleared during the initial handshake.
9284 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
9286 *) Fix object definitions for Private and Enterprise: they were not
9287 recognized in their shortname (=lowercase) representation. Extend
9288 obj_dat.pl to issue an error when using undefined keywords instead
9289 of silently ignoring the problem (Svenning Sorensen
9290 <sss@sss.dnsalias.net>).
9293 *) Fix DH_generate_parameters() so that it works for 'non-standard'
9294 generators, i.e. generators other than 2 and 5. (Previously, the
9295 code did not properly initialise the 'add' and 'rem' values to
9296 BN_generate_prime().)
9298 In the new general case, we do not insist that 'generator' is
9299 actually a primitive root: This requirement is rather pointless;
9300 a generator of the order-q subgroup is just as good, if not
9304 *) Map new X509 verification errors to alerts. Discovered and submitted by
9305 Tom Wu <tom@arcot.com>.
9308 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
9309 returning non-zero before the data has been completely received
9310 when using non-blocking I/O.
9311 [Bodo Moeller; problem pointed out by John Hughes]
9313 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
9314 [Ben Laurie, Lutz Jaenicke]
9316 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
9317 Yoram Zahavi <YoramZ@gilian.com>).
9320 *) Add information about CygWin 1.3 and on, and preserve proper
9321 configuration for the versions before that.
9322 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
9324 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
9325 check whether we deal with a copy of a session and do not delete from
9326 the cache in this case. Problem reported by "Izhar Shoshani Levi"
9327 <izhar@checkpoint.com>.
9330 *) Do not store session data into the internal session cache, if it
9331 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
9332 flag is set). Proposed by Aslam <aslam@funk.com>.
9335 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
9339 *) [In 0.9.6d-engine release:]
9340 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
9341 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
9343 *) Add the configuration target linux-s390x.
9344 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
9346 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
9347 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
9348 variable as an indication that a ClientHello message has been
9349 received. As the flag value will be lost between multiple
9350 invocations of ssl3_accept when using non-blocking I/O, the
9351 function may not be aware that a handshake has actually taken
9352 place, thus preventing a new session from being added to the
9355 To avoid this problem, we now set s->new_session to 2 instead of
9356 using a local variable.
9357 [Lutz Jaenicke, Bodo Moeller]
9359 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
9360 if the SSL_R_LENGTH_MISMATCH error is detected.
9361 [Geoff Thorpe, Bodo Moeller]
9363 *) New 'shared_ldflag' column in Configure platform table.
9366 *) Fix EVP_CIPHER_mode macro.
9367 ["Dan S. Camper" <dan@bti.net>]
9369 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
9370 type, we must throw them away by setting rr->length to 0.
9371 [D P Chang <dpc@qualys.com>]
9373 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
9375 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
9376 <Dominikus.Scherkl@biodata.com>. (The previous implementation
9377 worked incorrectly for those cases where range = 10..._2 and
9378 3*range is two bits longer than range.)
9381 *) Only add signing time to PKCS7 structures if it is not already
9385 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
9386 OBJ_ld_ce should be OBJ_id_ce.
9387 Also some ip-pda OIDs in crypto/objects/objects.txt were
9388 incorrect (cf. RFC 3039).
9389 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
9391 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
9392 returns early because it has nothing to do.
9393 [Andy Schneider <andy.schneider@bjss.co.uk>]
9395 *) [In 0.9.6c-engine release:]
9396 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
9397 [Andy Schneider <andy.schneider@bjss.co.uk>]
9399 *) [In 0.9.6c-engine release:]
9400 Add support for Cryptographic Appliance's keyserver technology.
9401 (Use engine 'keyclient')
9402 [Cryptographic Appliances and Geoff Thorpe]
9404 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
9405 is called via tools/c89.sh because arguments have to be
9406 rearranged (all '-L' options must appear before the first object
9408 [Richard Shapiro <rshapiro@abinitio.com>]
9410 *) [In 0.9.6c-engine release:]
9411 Add support for Broadcom crypto accelerator cards, backported
9413 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
9415 *) [In 0.9.6c-engine release:]
9416 Add support for SureWare crypto accelerator cards from
9417 Baltimore Technologies. (Use engine 'sureware')
9418 [Baltimore Technologies and Mark Cox]
9420 *) [In 0.9.6c-engine release:]
9421 Add support for crypto accelerator cards from Accelerated
9422 Encryption Processing, www.aep.ie. (Use engine 'aep')
9423 [AEP Inc. and Mark Cox]
9425 *) Add a configuration entry for gcc on UnixWare.
9426 [Gary Benson <gbenson@redhat.com>]
9428 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
9429 messages are stored in a single piece (fixed-length part and
9430 variable-length part combined) and fix various bugs found on the way.
9433 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
9434 instead. BIO_gethostbyname() does not know what timeouts are
9435 appropriate, so entries would stay in cache even when they have
9437 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
9439 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
9440 faced with a pathologically small ClientHello fragment that does
9441 not contain client_version: Instead of aborting with an error,
9442 simply choose the highest available protocol version (i.e.,
9443 TLS 1.0 unless it is disabled). In practice, ClientHello
9444 messages are never sent like this, but this change gives us
9445 strictly correct behaviour at least for TLS.
9448 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
9449 never resets s->method to s->ctx->method when called from within
9450 one of the SSL handshake functions.
9451 [Bodo Moeller; problem pointed out by Niko Baric]
9453 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
9454 (sent using the client's version number) if client_version is
9455 smaller than the protocol version in use. Also change
9456 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
9457 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
9458 the client will at least see that alert.
9461 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
9465 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
9466 client receives HelloRequest while in a handshake.
9467 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
9469 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
9470 should end in 'break', not 'goto end' which circumvents various
9471 cleanups done in state SSL_ST_OK. But session related stuff
9472 must be disabled for SSL_ST_OK in the case that we just sent a
9475 Also avoid some overhead by not calling ssl_init_wbio_buffer()
9476 before just sending a HelloRequest.
9477 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
9479 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
9480 reveal whether illegal block cipher padding was found or a MAC
9481 verification error occurred. (Neither SSLerr() codes nor alerts
9482 are directly visible to potential attackers, but the information
9483 may leak via logfiles.)
9485 Similar changes are not required for the SSL 2.0 implementation
9486 because the number of padding bytes is sent in clear for SSL 2.0,
9487 and the extra bytes are just ignored. However ssl/s2_pkt.c
9488 failed to verify that the purported number of padding bytes is in
9492 *) Add OpenUNIX-8 support including shared libraries
9493 (Boyd Lynn Gerber <gerberb@zenez.com>).
9496 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
9497 'wristwatch attack' using huge encoding parameters (cf.
9498 James H. Manger's CRYPTO 2001 paper). Note that the
9499 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
9500 encoding parameters and hence was not vulnerable.
9503 *) BN_sqr() bug fix.
9504 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
9506 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
9507 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
9508 followed by modular reduction.
9509 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
9511 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
9512 equivalent based on BN_pseudo_rand() instead of BN_rand().
9515 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
9516 This function was broken, as the check for a new client hello message
9517 to handle SGC did not allow these large messages.
9518 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
9521 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
9524 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
9525 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
9528 *) Rework the configuration and shared library support for Tru64 Unix.
9529 The configuration part makes use of modern compiler features and
9530 still retains old compiler behavior for those that run older versions
9531 of the OS. The shared library support part includes a variant that
9532 uses the RPATH feature, and is available through the special
9533 configuration target "alpha-cc-rpath", which will never be selected
9535 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
9537 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
9538 with the same message size as in ssl3_get_certificate_request().
9539 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
9540 messages might inadvertently be reject as too long.
9541 [Petr Lampa <lampa@fee.vutbr.cz>]
9543 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
9546 *) Modified SSL library such that the verify_callback that has been set
9547 specificly for an SSL object with SSL_set_verify() is actually being
9548 used. Before the change, a verify_callback set with this function was
9549 ignored and the verify_callback() set in the SSL_CTX at the time of
9550 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
9551 to allow the necessary settings.
9554 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
9555 explicitly to NULL, as at least on Solaris 8 this seems not always to be
9556 done automatically (in contradiction to the requirements of the C
9557 standard). This made problems when used from OpenSSH.
9560 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
9561 dh->length and always used
9563 BN_rand_range(priv_key, dh->p).
9565 BN_rand_range() is not necessary for Diffie-Hellman, and this
9566 specific range makes Diffie-Hellman unnecessarily inefficient if
9567 dh->length (recommended exponent length) is much smaller than the
9568 length of dh->p. We could use BN_rand_range() if the order of
9569 the subgroup was stored in the DH structure, but we only have
9574 BN_rand(priv_key, l, ...)
9576 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
9582 RSA_eay_public_encrypt
9583 RSA_eay_private_decrypt
9584 RSA_eay_private_encrypt (signing)
9585 RSA_eay_public_decrypt (signature verification)
9587 (default implementations for RSA_public_encrypt,
9588 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
9589 always reject numbers >= n.
9592 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
9593 to synchronize access to 'locking_thread'. This is necessary on
9594 systems where access to 'locking_thread' (an 'unsigned long'
9595 variable) is not atomic.
9598 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
9599 *before* setting the 'crypto_lock_rand' flag. The previous code had
9600 a race condition if 0 is a valid thread ID.
9601 [Travis Vitek <vitek@roguewave.com>]
9603 *) Add support for shared libraries under Irix.
9604 [Albert Chin-A-Young <china@thewrittenword.com>]
9606 *) Add configuration option to build on Linux on both big-endian and
9608 [Ralf Baechle <ralf@uni-koblenz.de>]
9610 *) Add the possibility to create shared libraries on HP-UX.
9613 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
9615 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
9616 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
9617 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
9618 PRNG state recovery was possible based on the output of
9619 one PRNG request appropriately sized to gain knowledge on
9620 'md' followed by enough consecutive 1-byte PRNG requests
9621 to traverse all of 'state'.
9623 1. When updating 'md_local' (the current thread's copy of 'md')
9624 during PRNG output generation, hash all of the previous
9625 'md_local' value, not just the half used for PRNG output.
9627 2. Make the number of bytes from 'state' included into the hash
9628 independent from the number of PRNG bytes requested.
9630 The first measure alone would be sufficient to avoid
9631 Markku-Juhani's attack. (Actually it had never occurred
9632 to me that the half of 'md_local' used for chaining was the
9633 half from which PRNG output bytes were taken -- I had always
9634 assumed that the secret half would be used.) The second
9635 measure makes sure that additional data from 'state' is never
9636 mixed into 'md_local' in small portions; this heuristically
9637 further strengthens the PRNG.
9640 *) Fix crypto/bn/asm/mips3.s.
9643 *) When only the key is given to "enc", the IV is undefined. Print out
9644 an error message in this case.
9647 *) Handle special case when X509_NAME is empty in X509 printing routines.
9650 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
9651 positive and less than q.
9654 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
9655 used: it isn't thread safe and the add_lock_callback should handle
9657 [Paul Rose <Paul.Rose@bridge.com>]
9659 *) Verify that incoming data obeys the block size in
9660 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
9664 [Ulf Möller, Bodo Möller]
9666 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
9667 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
9668 when fixing the server behaviour for backwards-compatible 'client
9669 hello' messages. (Note that the attack is impractical against
9670 SSL 3.0 and TLS 1.0 anyway because length and version checking
9671 means that the probability of guessing a valid ciphertext is
9672 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
9675 Before 0.9.5, the countermeasure (hide the error by generating a
9676 random 'decryption result') did not work properly because
9677 ERR_clear_error() was missing, meaning that SSL_get_error() would
9678 detect the supposedly ignored error.
9680 Both problems are now fixed.
9683 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
9684 (previously it was 1024).
9687 *) Fix for compatibility mode trust settings: ignore trust settings
9688 unless some valid trust or reject settings are present.
9691 *) Fix for blowfish EVP: its a variable length cipher.
9694 *) Fix various bugs related to DSA S/MIME verification. Handle missing
9695 parameters in DSA public key structures and return an error in the
9696 DSA routines if parameters are absent.
9699 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
9700 in the current directory if neither $RANDFILE nor $HOME was set.
9701 RAND_file_name() in 0.9.6a returned NULL in this case. This has
9702 caused some confusion to Windows users who haven't defined $HOME.
9703 Thus RAND_file_name() is changed again: e_os.h can define a
9704 DEFAULT_HOME, which will be used if $HOME is not set.
9705 For Windows, we use "C:"; on other platforms, we still require
9706 environment variables.
9708 *) Move 'if (!initialized) RAND_poll()' into regions protected by
9709 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
9710 having multiple threads call RAND_poll() concurrently.
9713 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
9714 combination of a flag and a thread ID variable.
9715 Otherwise while one thread is in ssleay_rand_bytes (which sets the
9716 flag), *other* threads can enter ssleay_add_bytes without obeying
9717 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
9718 that they do not hold after the first thread unsets add_do_not_lock).
9721 *) Change bctest again: '-x' expressions are not available in all
9725 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
9727 *) Fix a couple of memory leaks in PKCS7_dataDecode()
9728 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
9730 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
9731 the default extension for executables, if any. Also, make the perl
9732 scripts that use symlink() to test if it really exists and use "cp"
9733 if it doesn't. All this made OpenSSL compilable and installable in
9737 *) Fix for asn1_GetSequence() for indefinite length constructed data.
9738 If SEQUENCE is length is indefinite just set c->slen to the total
9739 amount of data available.
9740 [Steve Henson, reported by shige@FreeBSD.org]
9741 [This change does not apply to 0.9.7.]
9743 *) Change bctest to avoid here-documents inside command substitution
9744 (workaround for FreeBSD /bin/sh bug).
9745 For compatibility with Ultrix, avoid shell functions (introduced
9746 in the bctest version that searches along $PATH).
9749 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
9750 with des_encrypt() defined on some operating systems, like Solaris
9754 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
9755 On the Importance of Eliminating Errors in Cryptographic
9756 Computations, J. Cryptology 14 (2001) 2, 101-119,
9757 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
9760 *) MIPS assembler BIGNUM division bug fix.
9763 *) Disabled incorrect Alpha assembler code.
9766 *) Fix PKCS#7 decode routines so they correctly update the length
9767 after reading an EOC for the EXPLICIT tag.
9769 [This change does not apply to 0.9.7.]
9771 *) Fix bug in PKCS#12 key generation routines. This was triggered
9772 if a 3DES key was generated with a 0 initial byte. Include
9773 PKCS12_BROKEN_KEYGEN compilation option to retain the old
9774 (but broken) behaviour.
9777 *) Enhance bctest to search for a working bc along $PATH and print
9779 [Tim Rice <tim@multitalents.net> via Richard Levitte]
9781 *) Fix memory leaks in err.c: free err_data string if necessary;
9782 don't write to the wrong index in ERR_set_error_data.
9785 *) Implement ssl23_peek (analogous to ssl23_read), which previously
9789 *) Replace rdtsc with _emit statements for VC++ version 5.
9790 [Jeremy Cooper <jeremy@baymoo.org>]
9792 *) Make it possible to reuse SSLv2 sessions.
9795 *) In copy_email() check for >= 0 as a return value for
9796 X509_NAME_get_index_by_NID() since 0 is a valid index.
9797 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
9799 *) Avoid coredump with unsupported or invalid public keys by checking if
9800 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
9801 PKCS7_verify() fails with non detached data.
9804 *) Don't use getenv in library functions when run as setuid/setgid.
9805 New function OPENSSL_issetugid().
9808 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
9809 due to incorrect handling of multi-threading:
9811 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
9813 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
9815 3. Count how many times MemCheck_off() has been called so that
9816 nested use can be treated correctly. This also avoids
9817 inband-signalling in the previous code (which relied on the
9818 assumption that thread ID 0 is impossible).
9821 *) Add "-rand" option also to s_client and s_server.
9824 *) Fix CPU detection on Irix 6.x.
9825 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
9826 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
9828 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
9831 [This change does not apply to 0.9.7.]
9833 *) Use the cached encoding of an X509_NAME structure rather than
9834 copying it. This is apparently the reason for the libsafe "errors"
9835 but the code is actually correct.
9838 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
9839 Bleichenbacher's DSA attack.
9840 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
9841 to be set and top=0 forces the highest bit to be set; top=-1 is new
9842 and leaves the highest bit random.
9843 [Ulf Moeller, Bodo Moeller]
9845 *) In the NCONF_...-based implementations for CONF_... queries
9846 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
9847 a temporary CONF structure with the data component set to NULL
9848 (which gives segmentation faults in lh_retrieve).
9849 Instead, use NULL for the CONF pointer in CONF_get_string and
9850 CONF_get_number (which may use environment variables) and directly
9851 return NULL from CONF_get_section.
9854 *) Fix potential buffer overrun for EBCDIC.
9857 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
9858 keyUsage if basicConstraints absent for a CA.
9861 *) Make SMIME_write_PKCS7() write mail header values with a format that
9862 is more generally accepted (no spaces before the semicolon), since
9863 some programs can't parse those values properly otherwise. Also make
9864 sure BIO's that break lines after each write do not create invalid
9868 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
9869 macros previously used would not encode an empty SEQUENCE OF
9870 and break the signature.
9872 [This change does not apply to 0.9.7.]
9874 *) Zero the premaster secret after deriving the master secret in
9878 *) Add some EVP_add_digest_alias registrations (as found in
9879 OpenSSL_add_all_digests()) to SSL_library_init()
9880 aka OpenSSL_add_ssl_algorithms(). This provides improved
9881 compatibility with peers using X.509 certificates
9882 with unconventional AlgorithmIdentifier OIDs.
9885 *) Fix for Irix with NO_ASM.
9886 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
9888 *) ./config script fixes.
9889 [Ulf Moeller, Richard Levitte]
9891 *) Fix 'openssl passwd -1'.
9894 *) Change PKCS12_key_gen_asc() so it can cope with non null
9895 terminated strings whose length is passed in the passlen
9896 parameter, for example from PEM callbacks. This was done
9897 by adding an extra length parameter to asc2uni().
9898 [Steve Henson, reported by <oddissey@samsung.co.kr>]
9900 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
9901 call failed, free the DSA structure.
9904 *) Fix to uni2asc() to cope with zero length Unicode strings.
9905 These are present in some PKCS#12 files.
9908 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
9909 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
9910 when writing a 32767 byte record.
9911 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
9913 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
9914 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
9916 (RSA objects have a reference count access to which is protected
9917 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
9918 so they are meant to be shared between threads.)
9919 [Bodo Moeller, Geoff Thorpe; original patch submitted by
9920 "Reddie, Steven" <Steven.Reddie@ca.com>]
9922 *) Fix a deadlock in CRYPTO_mem_leaks().
9925 *) Use better test patterns in bntest.
9928 *) rand_win.c fix for Borland C.
9931 *) BN_rshift bugfix for n == 0.
9934 *) Add a 'bctest' script that checks for some known 'bc' bugs
9935 so that 'make test' does not abort just because 'bc' is broken.
9938 *) Store verify_result within SSL_SESSION also for client side to
9939 avoid potential security hole. (Re-used sessions on the client side
9940 always resulted in verify_result==X509_V_OK, not using the original
9941 result of the server certificate verification.)
9944 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
9945 SSL3_RT_APPLICATION_DATA, return 0.
9946 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
9950 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
9951 releases, have been re-implemented by renaming the previous
9952 implementations of ssl2_read and ssl3_read to ssl2_read_internal
9953 and ssl3_read_internal, respectively, and adding 'peek' parameters
9954 to them. The new ssl[23]_{read,peek} functions are calls to
9955 ssl[23]_read_internal with the 'peek' flag set appropriately.
9956 A 'peek' parameter has also been added to ssl3_read_bytes, which
9957 does the actual work for ssl3_read_internal.
9960 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
9961 the method-specific "init()" handler. Also clean up ex_data after
9962 calling the method-specific "finish()" handler. Previously, this was
9963 happening the other way round.
9966 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
9967 The previous value, 12, was not always sufficient for BN_mod_exp().
9970 *) Make sure that shared libraries get the internal name engine with
9971 the full version number and not just 0. This should mark the
9972 shared libraries as not backward compatible. Of course, this should
9973 be changed again when we can guarantee backward binary compatibility.
9976 *) Fix typo in get_cert_by_subject() in by_dir.c
9977 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
9979 *) Rework the system to generate shared libraries:
9981 - Make note of the expected extension for the shared libraries and
9982 if there is a need for symbolic links from for example libcrypto.so.0
9983 to libcrypto.so.0.9.7. There is extended info in Configure for
9986 - Make as few rebuilds of the shared libraries as possible.
9988 - Still avoid linking the OpenSSL programs with the shared libraries.
9990 - When installing, install the shared libraries separately from the
9994 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
9996 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
9997 and not in SSL_clear because the latter is also used by the
9998 accept/connect functions; previously, the settings made by
9999 SSL_set_read_ahead would be lost during the handshake.
10000 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
10002 *) Correct util/mkdef.pl to be selective about disabled algorithms.
10003 Previously, it would create entries for disabled algorithms no
10007 *) Added several new manual pages for SSL_* function.
10010 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
10012 *) In ssl23_get_client_hello, generate an error message when faced
10013 with an initial SSL 3.0/TLS record that is too small to contain the
10014 first two bytes of the ClientHello message, i.e. client_version.
10015 (Note that this is a pathologic case that probably has never happened
10016 in real life.) The previous approach was to use the version number
10017 from the record header as a substitute; but our protocol choice
10018 should not depend on that one because it is not authenticated
10019 by the Finished messages.
10022 *) More robust randomness gathering functions for Windows.
10023 [Jeffrey Altman <jaltman@columbia.edu>]
10025 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
10026 not set then we don't setup the error code for issuer check errors
10027 to avoid possibly overwriting other errors which the callback does
10028 handle. If an application does set the flag then we assume it knows
10029 what it is doing and can handle the new informational codes
10033 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
10034 a general "ANY" type, as such it should be able to decode anything
10035 including tagged types. However it didn't check the class so it would
10036 wrongly interpret tagged types in the same way as their universal
10037 counterpart and unknown types were just rejected. Changed so that the
10038 tagged and unknown types are handled in the same way as a SEQUENCE:
10039 that is the encoding is stored intact. There is also a new type
10040 "V_ASN1_OTHER" which is used when the class is not universal, in this
10041 case we have no idea what the actual type is so we just lump them all
10045 *) On VMS, stdout may very well lead to a file that is written to
10046 in a record-oriented fashion. That means that every write() will
10047 write a separate record, which will be read separately by the
10048 programs trying to read from it. This can be very confusing.
10050 The solution is to put a BIO filter in the way that will buffer
10051 text until a linefeed is reached, and then write everything a
10052 line at a time, so every record written will be an actual line,
10053 not chunks of lines and not (usually doesn't happen, but I've
10054 seen it once) several lines in one record. BIO_f_linebuffer() is
10057 Currently, it's a VMS-only method, because that's where it has
10058 been tested well enough.
10061 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
10062 it can return incorrect results.
10063 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
10064 but it was in 0.9.6-beta[12].)
10067 *) Disable the check for content being present when verifying detached
10068 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
10069 include zero length content when signing messages.
10072 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
10073 BIO_ctrl (for BIO pairs).
10076 *) Add DSO method for VMS.
10079 *) Bug fix: Montgomery multiplication could produce results with the
10083 *) Add RPM specification openssl.spec and modify it to build three
10084 packages. The default package contains applications, application
10085 documentation and run-time libraries. The devel package contains
10086 include files, static libraries and function documentation. The
10087 doc package contains the contents of the doc directory. The original
10088 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
10091 *) Add a large number of documentation files for many SSL routines.
10092 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
10094 *) Add a configuration entry for Sony News 4.
10095 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
10097 *) Don't set the two most significant bits to one when generating a
10098 random number < q in the DSA library.
10101 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
10102 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
10103 the underlying transport is blocking) if a handshake took place.
10104 (The default behaviour is needed by applications such as s_client
10105 and s_server that use select() to determine when to use SSL_read;
10106 but for applications that know in advance when to expect data, it
10107 just makes things more complicated.)
10110 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
10114 *) Add a few more EBCDIC conditionals that make `req' and `x509'
10115 work better on such systems.
10116 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10118 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
10119 Update PKCS12_parse() so it copies the friendlyName and the
10120 keyid to the certificates aux info.
10123 *) Fix bug in PKCS7_verify() which caused an infinite loop
10124 if there was more than one signature.
10125 [Sven Uszpelkat <su@celocom.de>]
10127 *) Major change in util/mkdef.pl to include extra information
10128 about each symbol, as well as presenting variables as well
10129 as functions. This change means that there's n more need
10130 to rebuild the .num files when some algorithms are excluded.
10133 *) Allow the verify time to be set by an application,
10134 rather than always using the current time.
10137 *) Phase 2 verify code reorganisation. The certificate
10138 verify code now looks up an issuer certificate by a
10139 number of criteria: subject name, authority key id
10140 and key usage. It also verifies self signed certificates
10141 by the same criteria. The main comparison function is
10142 X509_check_issued() which performs these checks.
10144 Lot of changes were necessary in order to support this
10145 without completely rewriting the lookup code.
10147 Authority and subject key identifier are now cached.
10149 The LHASH 'certs' is X509_STORE has now been replaced
10150 by a STACK_OF(X509_OBJECT). This is mainly because an
10151 LHASH can't store or retrieve multiple objects with
10152 the same hash value.
10154 As a result various functions (which were all internal
10155 use only) have changed to handle the new X509_STORE
10156 structure. This will break anything that messed round
10157 with X509_STORE internally.
10159 The functions X509_STORE_add_cert() now checks for an
10160 exact match, rather than just subject name.
10162 The X509_STORE API doesn't directly support the retrieval
10163 of multiple certificates matching a given criteria, however
10164 this can be worked round by performing a lookup first
10165 (which will fill the cache with candidate certificates)
10166 and then examining the cache for matches. This is probably
10167 the best we can do without throwing out X509_LOOKUP
10168 entirely (maybe later...).
10170 The X509_VERIFY_CTX structure has been enhanced considerably.
10172 All certificate lookup operations now go via a get_issuer()
10173 callback. Although this currently uses an X509_STORE it
10174 can be replaced by custom lookups. This is a simple way
10175 to bypass the X509_STORE hackery necessary to make this
10176 work and makes it possible to use more efficient techniques
10177 in future. A very simple version which uses a simple
10178 STACK for its trusted certificate store is also provided
10179 using X509_STORE_CTX_trusted_stack().
10181 The verify_cb() and verify() callbacks now have equivalents
10182 in the X509_STORE_CTX structure.
10184 X509_STORE_CTX also has a 'flags' field which can be used
10185 to customise the verify behaviour.
10188 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
10189 excludes S/MIME capabilities.
10192 *) When a certificate request is read in keep a copy of the
10193 original encoding of the signed data and use it when outputting
10194 again. Signatures then use the original encoding rather than
10195 a decoded, encoded version which may cause problems if the
10196 request is improperly encoded.
10199 *) For consistency with other BIO_puts implementations, call
10200 buffer_write(b, ...) directly in buffer_puts instead of calling
10203 In BIO_puts, increment b->num_write as in BIO_write.
10204 [Peter.Sylvester@EdelWeb.fr]
10206 *) Fix BN_mul_word for the case where the word is 0. (We have to use
10207 BN_zero, we may not return a BIGNUM with an array consisting of
10208 words set to zero.)
10211 *) Avoid calling abort() from within the library when problems are
10212 detected, except if preprocessor symbols have been defined
10213 (such as REF_CHECK, BN_DEBUG etc.).
10216 *) New openssl application 'rsautl'. This utility can be
10217 used for low level RSA operations. DER public key
10218 BIO/fp routines also added.
10221 *) New Configure entry and patches for compiling on QNX 4.
10222 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
10224 *) A demo state-machine implementation was sponsored by
10225 Nuron (http://www.nuron.com/) and is now available in
10226 demos/state_machine.
10229 *) New options added to the 'dgst' utility for signature
10230 generation and verification.
10233 *) Unrecognized PKCS#7 content types are now handled via a
10234 catch all ASN1_TYPE structure. This allows unsupported
10235 types to be stored as a "blob" and an application can
10236 encode and decode it manually.
10239 *) Fix various signed/unsigned issues to make a_strex.c
10240 compile under VC++.
10241 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
10243 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
10244 length if passed a buffer. ASN1_INTEGER_to_BN failed
10245 if passed a NULL BN and its argument was negative.
10246 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
10248 *) Modification to PKCS#7 encoding routines to output definite
10249 length encoding. Since currently the whole structures are in
10250 memory there's not real point in using indefinite length
10251 constructed encoding. However if OpenSSL is compiled with
10252 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
10255 *) Added BIO_vprintf() and BIO_vsnprintf().
10258 *) Added more prefixes to parse for in the strings written
10259 through a logging bio, to cover all the levels that are available
10260 through syslog. The prefixes are now:
10262 PANIC, EMERG, EMR => LOG_EMERG
10263 ALERT, ALR => LOG_ALERT
10264 CRIT, CRI => LOG_CRIT
10265 ERROR, ERR => LOG_ERR
10266 WARNING, WARN, WAR => LOG_WARNING
10267 NOTICE, NOTE, NOT => LOG_NOTICE
10268 INFO, INF => LOG_INFO
10269 DEBUG, DBG => LOG_DEBUG
10271 and as before, if none of those prefixes are present at the
10272 beginning of the string, LOG_ERR is chosen.
10274 On Win32, the LOG_* levels are mapped according to this:
10276 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
10277 LOG_WARNING => EVENTLOG_WARNING_TYPE
10278 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
10282 *) Made it possible to reconfigure with just the configuration
10283 argument "reconf" or "reconfigure". The command line arguments
10284 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
10285 and are retrieved from there when reconfiguring.
10288 *) MD4 implemented.
10289 [Assar Westerlund <assar@sics.se>, Richard Levitte]
10291 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
10294 *) The obj_dat.pl script was messing up the sorting of object
10295 names. The reason was that it compared the quoted version
10296 of strings as a result "OCSP" > "OCSP Signing" because
10297 " > SPACE. Changed script to store unquoted versions of
10298 names and add quotes on output. It was also omitting some
10299 names from the lookup table if they were given a default
10300 value (that is if SN is missing it is given the same
10301 value as LN and vice versa), these are now added on the
10302 grounds that if an object has a name we should be able to
10303 look it up. Finally added warning output when duplicate
10304 short or long names are found.
10307 *) Changes needed for Tandem NSK.
10308 [Scott Uroff <scott@xypro.com>]
10310 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
10311 RSA_padding_check_SSLv23(), special padding was never detected
10312 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
10313 version rollback attacks was not effective.
10315 In s23_clnt.c, don't use special rollback-attack detection padding
10316 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
10317 client; similarly, in s23_srvr.c, don't do the rollback check if
10318 SSL 2.0 is the only protocol enabled in the server.
10321 *) Make it possible to get hexdumps of unprintable data with 'openssl
10322 asn1parse'. By implication, the functions ASN1_parse_dump() and
10323 BIO_dump_indent() are added.
10326 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
10327 these print out strings and name structures based on various
10328 flags including RFC2253 support and proper handling of
10329 multibyte characters. Added options to the 'x509' utility
10330 to allow the various flags to be set.
10333 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
10334 Also change the functions X509_cmp_current_time() and
10335 X509_gmtime_adj() work with an ASN1_TIME structure,
10336 this will enable certificates using GeneralizedTime in validity
10337 dates to be checked.
10340 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
10341 negative public key encodings) on by default,
10342 NO_NEG_PUBKEY_BUG can be set to disable it.
10345 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
10346 content octets. An i2c_ASN1_OBJECT is unnecessary because
10347 the encoding can be trivially obtained from the structure.
10350 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
10351 not read locks (CRYPTO_r_[un]lock).
10354 *) A first attempt at creating official support for shared
10355 libraries through configuration. I've kept it so the
10356 default is static libraries only, and the OpenSSL programs
10357 are always statically linked for now, but there are
10358 preparations for dynamic linking in place.
10359 This has been tested on Linux and Tru64.
10362 *) Randomness polling function for Win9x, as described in:
10363 Peter Gutmann, Software Generation of Practically Strong
10367 *) Fix so PRNG is seeded in req if using an already existing
10371 *) New options to smime application. -inform and -outform
10372 allow alternative formats for the S/MIME message including
10373 PEM and DER. The -content option allows the content to be
10374 specified separately. This should allow things like Netscape
10375 form signing output easier to verify.
10378 *) Fix the ASN1 encoding of tags using the 'long form'.
10381 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
10382 STRING types. These convert content octets to and from the
10383 underlying type. The actual tag and length octets are
10384 already assumed to have been read in and checked. These
10385 are needed because all other string types have virtually
10386 identical handling apart from the tag. By having versions
10387 of the ASN1 functions that just operate on content octets
10388 IMPLICIT tagging can be handled properly. It also allows
10389 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
10390 and ASN1_INTEGER are identical apart from the tag.
10393 *) Change the handling of OID objects as follows:
10395 - New object identifiers are inserted in objects.txt, following
10396 the syntax given in objects.README.
10397 - objects.pl is used to process obj_mac.num and create a new
10399 - obj_dat.pl is used to create a new obj_dat.h, using the data in
10402 This is currently kind of a hack, and the perl code in objects.pl
10403 isn't very elegant, but it works as I intended. The simplest way
10404 to check that it worked correctly is to look in obj_dat.h and
10405 check the array nid_objs and make sure the objects haven't moved
10406 around (this is important!). Additions are OK, as well as
10407 consistent name changes.
10410 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
10413 *) Addition of the command line parameter '-rand file' to 'openssl req'.
10414 The given file adds to whatever has already been seeded into the
10415 random pool through the RANDFILE configuration file option or
10416 environment variable, or the default random state file.
10419 *) mkstack.pl now sorts each macro group into lexical order.
10420 Previously the output order depended on the order the files
10421 appeared in the directory, resulting in needless rewriting
10425 *) Patches to make OpenSSL compile under Win32 again. Mostly
10426 work arounds for the VC++ problem that it treats func() as
10427 func(void). Also stripped out the parts of mkdef.pl that
10428 added extra typesafe functions: these no longer exist.
10431 *) Reorganisation of the stack code. The macros are now all
10432 collected in safestack.h . Each macro is defined in terms of
10433 a "stack macro" of the form SKM_<name>(type, a, b). The
10434 DEBUG_SAFESTACK is now handled in terms of function casts,
10435 this has the advantage of retaining type safety without the
10436 use of additional functions. If DEBUG_SAFESTACK is not defined
10437 then the non typesafe macros are used instead. Also modified the
10438 mkstack.pl script to handle the new form. Needs testing to see
10439 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
10440 the default if no major problems. Similar behaviour for ASN1_SET_OF
10441 and PKCS12_STACK_OF.
10444 *) When some versions of IIS use the 'NET' form of private key the
10445 key derivation algorithm is different. Normally MD5(password) is
10446 used as a 128 bit RC4 key. In the modified case
10447 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
10448 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
10449 as the old Netscape_RSA functions except they have an additional
10450 'sgckey' parameter which uses the modified algorithm. Also added
10451 an -sgckey command line option to the rsa utility. Thanks to
10452 Adrian Peck <bertie@ncipher.com> for posting details of the modified
10453 algorithm to openssl-dev.
10456 *) The evp_local.h macros were using 'c.##kname' which resulted in
10457 invalid expansion on some systems (SCO 5.0.5 for example).
10458 Corrected to 'c.kname'.
10459 [Phillip Porch <root@theporch.com>]
10461 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
10462 a STACK of email addresses from a certificate or request, these look
10463 in the subject name and the subject alternative name extensions and
10464 omit any duplicate addresses.
10467 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
10468 This makes DSA verification about 2 % faster.
10471 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
10472 (meaning that now 2^5 values will be precomputed, which is only 4 KB
10473 plus overhead for 1024 bit moduli).
10474 This makes exponentiations about 0.5 % faster for 1024 bit
10475 exponents (as measured by "openssl speed rsa2048").
10478 *) Rename memory handling macros to avoid conflicts with other
10480 Malloc => OPENSSL_malloc
10481 Malloc_locked => OPENSSL_malloc_locked
10482 Realloc => OPENSSL_realloc
10483 Free => OPENSSL_free
10486 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
10487 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
10490 *) CygWin32 support.
10491 [John Jarvie <jjarvie@newsguy.com>]
10493 *) The type-safe stack code has been rejigged. It is now only compiled
10494 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
10495 by default all type-specific stack functions are "#define"d back to
10496 standard stack functions. This results in more streamlined output
10497 but retains the type-safety checking possibilities of the original
10501 *) The STACK code has been cleaned up, and certain type declarations
10502 that didn't make a lot of sense have been brought in line. This has
10503 also involved a cleanup of sorts in safestack.h to more correctly
10504 map type-safe stack functions onto their plain stack counterparts.
10505 This work has also resulted in a variety of "const"ifications of
10506 lots of the code, especially "_cmp" operations which should normally
10507 be prototyped with "const" parameters anyway.
10510 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
10511 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
10512 (The PRNG state consists of two parts, the large pool 'state' and 'md',
10513 where all of 'md' is used each time the PRNG is used, but 'state'
10514 is used only indexed by a cyclic counter. As entropy may not be
10515 well distributed from the beginning, 'md' is important as a
10516 chaining variable. However, the output function chains only half
10517 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
10518 all of 'md', and seeding with STATE_SIZE dummy bytes will result
10519 in all of 'state' being rewritten, with the new values depending
10520 on virtually all of 'md'. This overcomes the 80 bit limitation.)
10523 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
10524 the handshake is continued after ssl_verify_cert_chain();
10525 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
10526 can lead to 'unexplainable' connection aborts later.
10527 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
10529 *) Major EVP API cipher revision.
10530 Add hooks for extra EVP features. This allows various cipher
10531 parameters to be set in the EVP interface. Support added for variable
10532 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
10533 setting of RC2 and RC5 parameters.
10535 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
10538 Remove lots of duplicated code from the EVP library. For example *every*
10539 cipher init() function handles the 'iv' in the same way according to the
10540 cipher mode. They also all do nothing if the 'key' parameter is NULL and
10541 for CFB and OFB modes they zero ctx->num.
10543 New functionality allows removal of S/MIME code RC2 hack.
10545 Most of the routines have the same form and so can be declared in terms
10548 By shifting this to the top level EVP_CipherInit() it can be removed from
10549 all individual ciphers. If the cipher wants to handle IVs or keys
10550 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
10553 Change lots of functions like EVP_EncryptUpdate() to now return a
10554 value: although software versions of the algorithms cannot fail
10555 any installed hardware versions can.
10558 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
10559 this option is set, tolerate broken clients that send the negotiated
10560 protocol version number instead of the requested protocol version
10564 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
10565 i.e. non-zero for export ciphersuites, zero otherwise.
10566 Previous versions had this flag inverted, inconsistent with
10567 rsa_tmp_cb (..._TMP_RSA_CB).
10568 [Bodo Moeller; problem reported by Amit Chopra]
10570 *) Add missing DSA library text string. Work around for some IIS
10571 key files with invalid SEQUENCE encoding.
10574 *) Add a document (doc/standards.txt) that list all kinds of standards
10575 and so on that are implemented in OpenSSL.
10578 *) Enhance c_rehash script. Old version would mishandle certificates
10579 with the same subject name hash and wouldn't handle CRLs at all.
10580 Added -fingerprint option to crl utility, to support new c_rehash
10584 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
10587 *) Fix for SSL server purpose checking. Server checking was
10588 rejecting certificates which had extended key usage present
10589 but no ssl client purpose.
10590 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
10592 *) Make PKCS#12 code work with no password. The PKCS#12 spec
10593 is a little unclear about how a blank password is handled.
10594 Since the password in encoded as a BMPString with terminating
10595 double NULL a zero length password would end up as just the
10596 double NULL. However no password at all is different and is
10597 handled differently in the PKCS#12 key generation code. NS
10598 treats a blank password as zero length. MSIE treats it as no
10599 password on export: but it will try both on import. We now do
10600 the same: PKCS12_parse() tries zero length and no password if
10601 the password is set to "" or NULL (NULL is now a valid password:
10602 it wasn't before) as does the pkcs12 application.
10605 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
10606 perror when PEM_read_bio_X509_REQ fails, the error message must
10607 be obtained from the error queue.
10610 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
10611 it in ERR_remove_state if appropriate, and change ERR_get_state
10612 accordingly to avoid race conditions (this is necessary because
10613 thread_hash is no longer constant once set).
10616 *) Bugfix for linux-elf makefile.one.
10619 *) RSA_get_default_method() will now cause a default
10620 RSA_METHOD to be chosen if one doesn't exist already.
10621 Previously this was only set during a call to RSA_new()
10622 or RSA_new_method(NULL) meaning it was possible for
10623 RSA_get_default_method() to return NULL.
10626 *) Added native name translation to the existing DSO code
10627 that will convert (if the flag to do so is set) filenames
10628 that are sufficiently small and have no path information
10629 into a canonical native form. Eg. "blah" converted to
10630 "libblah.so" or "blah.dll" etc.
10633 *) New function ERR_error_string_n(e, buf, len) which is like
10634 ERR_error_string(e, buf), but writes at most 'len' bytes
10635 including the 0 terminator. For ERR_error_string_n, 'buf'
10637 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
10639 *) CONF library reworked to become more general. A new CONF
10640 configuration file reader "class" is implemented as well as a
10641 new functions (NCONF_*, for "New CONF") to handle it. The now
10642 old CONF_* functions are still there, but are reimplemented to
10643 work in terms of the new functions. Also, a set of functions
10644 to handle the internal storage of the configuration data is
10645 provided to make it easier to write new configuration file
10646 reader "classes" (I can definitely see something reading a
10647 configuration file in XML format, for example), called _CONF_*,
10648 or "the configuration storage API"...
10650 The new configuration file reading functions are:
10652 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
10653 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
10655 NCONF_default, NCONF_WIN32
10657 NCONF_dump_fp, NCONF_dump_bio
10659 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
10660 NCONF_new creates a new CONF object. This works in the same way
10661 as other interfaces in OpenSSL, like the BIO interface.
10662 NCONF_dump_* dump the internal storage of the configuration file,
10663 which is useful for debugging. All other functions take the same
10664 arguments as the old CONF_* functions wth the exception of the
10665 first that must be a `CONF *' instead of a `LHASH *'.
10667 To make it easer to use the new classes with the old CONF_* functions,
10668 the function CONF_set_default_method is provided.
10671 *) Add '-tls1' option to 'openssl ciphers', which was already
10672 mentioned in the documentation but had not been implemented.
10673 (This option is not yet really useful because even the additional
10674 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
10677 *) Initial DSO code added into libcrypto for letting OpenSSL (and
10678 OpenSSL-based applications) load shared libraries and bind to
10679 them in a portable way.
10680 [Geoff Thorpe, with contributions from Richard Levitte]
10682 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
10684 *) Make sure _lrotl and _lrotr are only used with MSVC.
10686 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
10687 (the default implementation of RAND_status).
10689 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
10690 to '-clrext' (= clear extensions), as intended and documented.
10691 [Bodo Moeller; inconsistency pointed out by Michael Attili
10692 <attili@amaxo.com>]
10694 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
10695 was larger than the MD block size.
10696 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
10698 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
10699 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
10700 using the passed key: if the passed key was a private key the result
10701 of X509_print(), for example, would be to print out all the private key
10705 *) des_quad_cksum() byte order bug fix.
10706 [Ulf Möller, using the problem description in krb4-0.9.7, where
10707 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
10709 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
10711 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
10713 *) For easily testing in shell scripts whether some command
10714 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
10715 returns with exit code 0 iff no command of the given name is available.
10716 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
10717 the output goes to stdout and nothing is printed to stderr.
10718 Additional arguments are always ignored.
10720 Since for each cipher there is a command of the same name,
10721 the 'no-cipher' compilation switches can be tested this way.
10723 ('openssl no-XXX' is not able to detect pseudo-commands such
10724 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
10727 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
10730 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
10731 is set; it will be thrown away anyway because each handshake creates
10733 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
10734 to parameters -- in previous versions (since OpenSSL 0.9.3) the
10735 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
10736 you effectively got SSL_OP_SINGLE_DH_USE when using this macro.
10739 *) New s_client option -ign_eof: EOF at stdin is ignored, and
10740 'Q' and 'R' lose their special meanings (quit/renegotiate).
10741 This is part of what -quiet does; unlike -quiet, -ign_eof
10742 does not suppress any output.
10745 *) Add compatibility options to the purpose and trust code. The
10746 purpose X509_PURPOSE_ANY is "any purpose" which automatically
10747 accepts a certificate or CA, this was the previous behaviour,
10748 with all the associated security issues.
10750 X509_TRUST_COMPAT is the old trust behaviour: only and
10751 automatically trust self signed roots in certificate store. A
10752 new trust setting X509_TRUST_DEFAULT is used to specify that
10753 a purpose has no associated trust setting and it should instead
10754 use the value in the default purpose.
10757 *) Fix the PKCS#8 DSA private key code so it decodes keys again
10758 and fix a memory leak.
10761 *) In util/mkerr.pl (which implements 'make errors'), preserve
10762 reason strings from the previous version of the .c file, as
10763 the default to have only downcase letters (and digits) in
10764 automatically generated reasons codes is not always appropriate.
10767 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
10768 using strerror. Previously, ERR_reason_error_string() returned
10769 library names as reason strings for SYSerr; but SYSerr is a special
10770 case where small numbers are errno values, not library numbers.
10773 *) Add '-dsaparam' option to 'openssl dhparam' application. This
10774 converts DSA parameters into DH parameters. (When creating parameters,
10775 DSA_generate_parameters is used.)
10778 *) Include 'length' (recommended exponent length) in C code generated
10779 by 'openssl dhparam -C'.
10782 *) The second argument to set_label in perlasm was already being used
10783 so couldn't be used as a "file scope" flag. Moved to third argument
10787 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
10788 instead of RAND_bytes for encryption IVs and salts.
10791 *) Include RAND_status() into RAND_METHOD instead of implementing
10792 it only for md_rand.c Otherwise replacing the PRNG by calling
10793 RAND_set_rand_method would be impossible.
10796 *) Don't let DSA_generate_key() enter an infinite loop if the random
10797 number generation fails.
10800 *) New 'rand' application for creating pseudo-random output.
10803 *) Added configuration support for Linux/IA64
10804 [Rolf Haberrecker <rolf@suse.de>]
10806 *) Assembler module support for Mingw32.
10809 *) Shared library support for HPUX (in shlib/).
10810 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
10812 *) Shared library support for Solaris gcc.
10813 [Lutz Behnke <behnke@trustcenter.de>]
10815 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
10817 *) PKCS7_encrypt() was adding text MIME headers twice because they
10818 were added manually and by SMIME_crlf_copy().
10821 *) In bntest.c don't call BN_rand with zero bits argument.
10822 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
10824 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
10825 case was implemented. This caused BN_div_recp() to fail occasionally.
10828 *) Add an optional second argument to the set_label() in the perl
10829 assembly language builder. If this argument exists and is set
10830 to 1 it signals that the assembler should use a symbol whose
10831 scope is the entire file, not just the current function. This
10832 is needed with MASM which uses the format label:: for this scope.
10833 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
10835 *) Change the ASN1 types so they are typedefs by default. Before
10836 almost all types were #define'd to ASN1_STRING which was causing
10837 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
10841 *) Change names of new functions to the new get1/get0 naming
10842 convention: After 'get1', the caller owns a reference count
10843 and has to call ..._free; 'get0' returns a pointer to some
10844 data structure without incrementing reference counters.
10845 (Some of the existing 'get' functions increment a reference
10846 counter, some don't.)
10847 Similarly, 'set1' and 'add1' functions increase reference
10848 counters or duplicate objects.
10851 *) Allow for the possibility of temp RSA key generation failure:
10852 the code used to assume it always worked and crashed on failure.
10855 *) Fix potential buffer overrun problem in BIO_printf().
10856 [Ulf Möller, using public domain code by Patrick Powell; problem
10857 pointed out by David Sacerdote <das33@cornell.edu>]
10859 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
10860 RAND_egd() and RAND_status(). In the command line application,
10861 the EGD socket can be specified like a seed file using RANDFILE
10865 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
10866 Some CAs (e.g. Verisign) distribute certificates in this form.
10869 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
10870 list to exclude them. This means that no special compilation option
10871 is needed to use anonymous DH: it just needs to be included in the
10875 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
10876 EVP_MD_type. The old functionality is available in a new macro called
10877 EVP_MD_md(). Change code that uses it and update docs.
10880 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
10881 where the 'void *' argument is replaced by a function pointer argument.
10882 Previously 'void *' was abused to point to functions, which works on
10883 many platforms, but is not correct. As these functions are usually
10884 called by macros defined in OpenSSL header files, most source code
10885 should work without changes.
10888 *) <openssl/opensslconf.h> (which is created by Configure) now contains
10889 sections with information on -D... compiler switches used for
10890 compiling the library so that applications can see them. To enable
10891 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
10892 must be defined. E.g.,
10893 #define OPENSSL_ALGORITHM_DEFINES
10894 #include <openssl/opensslconf.h>
10895 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
10896 [Richard Levitte, Ulf and Bodo Möller]
10898 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
10902 *) Change the 'other' type in certificate aux info to a STACK_OF
10903 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
10904 the required ASN1 format: arbitrary types determined by an OID.
10907 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
10908 argument to 'req'. This is not because the function is newer or
10909 better than others it just uses the work 'NEW' in the certificate
10910 request header lines. Some software needs this.
10913 *) Reorganise password command line arguments: now passwords can be
10914 obtained from various sources. Delete the PEM_cb function and make
10915 it the default behaviour: i.e. if the callback is NULL and the
10916 usrdata argument is not NULL interpret it as a null terminated pass
10917 phrase. If usrdata and the callback are NULL then the pass phrase
10918 is prompted for as usual.
10921 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
10922 the support is automatically enabled. The resulting binaries will
10923 autodetect the card and use it if present.
10924 [Ben Laurie and Compaq Inc.]
10926 *) Work around for Netscape hang bug. This sends certificate request
10927 and server done in one record. Since this is perfectly legal in the
10928 SSL/TLS protocol it isn't a "bug" option and is on by default. See
10929 the bugs/SSLv3 entry for more info.
10932 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
10935 *) Add -rand argument to smime and pkcs12 applications and read/write
10939 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
10942 *) Add command line password options to the remaining applications.
10945 *) Bug fix for BN_div_recp() for numerators with an even number of
10949 *) More tests in bntest.c, and changed test_bn output.
10952 *) ./config recognizes MacOS X now.
10955 *) Bug fix for BN_div() when the first words of num and divisor are
10956 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
10959 *) Add support for various broken PKCS#8 formats, and command line
10960 options to produce them.
10963 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
10964 get temporary BIGNUMs from a BN_CTX.
10967 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
10971 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
10972 include a #define from the old name to the new. The original intent
10973 was that statically linked binaries could for example just call
10974 SSLeay_add_all_ciphers() to just add ciphers to the table and not
10975 link with digests. This never worked because SSLeay_add_all_digests()
10976 and SSLeay_add_all_ciphers() were in the same source file so calling
10977 one would link with the other. They are now in separate source files.
10980 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
10983 *) Use a less unusual form of the Miller-Rabin primality test (it used
10984 a binary algorithm for exponentiation integrated into the Miller-Rabin
10985 loop, our standard modexp algorithms are faster).
10988 *) Support for the EBCDIC character set completed.
10989 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
10991 *) Source code cleanups: use const where appropriate, eliminate casts,
10992 use void * instead of char * in lhash.
10995 *) Bugfix: ssl3_send_server_key_exchange was not restartable
10996 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
10997 this the server could overwrite ephemeral keys that the client
11001 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
11002 using 50 iterations of the Rabin-Miller test.
11004 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
11005 iterations of the Rabin-Miller test as required by the appendix
11006 to FIPS PUB 186[-1]) instead of DSA_is_prime.
11007 As BN_is_prime_fasttest includes trial division, DSA parameter
11008 generation becomes much faster.
11010 This implies a change for the callback functions in DSA_is_prime
11011 and DSA_generate_parameters: The callback function is called once
11012 for each positive witness in the Rabin-Miller test, not just
11013 occasionally in the inner loop; and the parameters to the
11014 callback function now provide an iteration count for the outer
11015 loop rather than for the current invocation of the inner loop.
11016 DSA_generate_parameters additionally can call the callback
11017 function with an 'iteration count' of -1, meaning that a
11018 candidate has passed the trial division test (when q is generated
11019 from an application-provided seed, trial division is skipped).
11022 *) New function BN_is_prime_fasttest that optionally does trial
11023 division before starting the Rabin-Miller test and has
11024 an additional BN_CTX * argument (whereas BN_is_prime always
11025 has to allocate at least one BN_CTX).
11026 'callback(1, -1, cb_arg)' is called when a number has passed the
11027 trial division stage.
11030 *) Fix for bug in CRL encoding. The validity dates weren't being handled
11034 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
11037 *) New function BN_pseudo_rand().
11040 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
11041 bignum version of BN_from_montgomery() with the working code from
11042 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
11046 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
11047 made it impossible to use the same SSL_SESSION data structure in
11048 SSL2 clients in multiple threads.
11051 *) The return value of RAND_load_file() no longer counts bytes obtained
11052 by stat(). RAND_load_file(..., -1) is new and uses the complete file
11053 to seed the PRNG (previously an explicit byte count was required).
11054 [Ulf Möller, Bodo Möller]
11056 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
11057 used (char *) instead of (void *) and had casts all over the place.
11060 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
11063 *) Retain source code compatibility for BN_prime_checks macro:
11064 BN_is_prime(..., BN_prime_checks, ...) now uses
11065 BN_prime_checks_for_size to determine the appropriate number of
11066 Rabin-Miller iterations.
11069 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
11070 DH_CHECK_P_NOT_SAFE_PRIME.
11071 (Check if this is true? OpenPGP calls them "strong".)
11074 *) Merge the functionality of "dh" and "gendh" programs into a new program
11075 "dhparam". The old programs are retained for now but will handle DH keys
11076 (instead of parameters) in future.
11079 *) Make the ciphers, s_server and s_client programs check the return values
11080 when a new cipher list is set.
11083 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
11084 ciphers. Before when the 56bit ciphers were enabled the sorting was
11087 The syntax for the cipher sorting has been extended to support sorting by
11088 cipher-strength (using the strength_bits hard coded in the tables).
11089 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
11091 Fix a bug in the cipher-command parser: when supplying a cipher command
11092 string with an "undefined" symbol (neither command nor alphanumeric
11093 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
11094 an error is flagged.
11096 Due to the strength-sorting extension, the code of the
11097 ssl_create_cipher_list() function was completely rearranged. I hope that
11098 the readability was also increased :-)
11099 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
11101 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
11102 for the first serial number and places 2 in the serial number file. This
11103 avoids problems when the root CA is created with serial number zero and
11104 the first user certificate has the same issuer name and serial number
11108 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
11109 the new code. Add documentation for this stuff.
11112 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
11113 X509_*() to X509at_*() on the grounds that they don't handle X509
11114 structures and behave in an analogous way to the X509v3 functions:
11115 they shouldn't be called directly but wrapper functions should be used
11118 So we also now have some wrapper functions that call the X509at functions
11119 when passed certificate requests. (TO DO: similar things can be done with
11120 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
11121 things. Some of these need some d2i or i2d and print functionality
11122 because they handle more complex structures.)
11125 *) Add missing #ifndefs that caused missing symbols when building libssl
11126 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
11127 NO_RSA in ssl/s2*.c.
11128 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
11130 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
11131 has a return value which indicates the quality of the random data
11132 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
11133 error queue. New function RAND_pseudo_bytes() generates output that is
11134 guaranteed to be unique but not unpredictable. RAND_add is like
11135 RAND_seed, but takes an extra argument for an entropy estimate
11136 (RAND_seed always assumes full entropy).
11139 *) Do more iterations of Rabin-Miller probable prime test (specifically,
11140 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
11141 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
11142 in crypto/bn/bn_prime.c for the complete table). This guarantees a
11143 false-positive rate of at most 2^-80 for random input.
11146 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
11149 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
11150 in the 0.9.5 release), this returns the chain
11151 from an X509_CTX structure with a dup of the stack and all
11152 the X509 reference counts upped: so the stack will exist
11153 after X509_CTX_cleanup() has been called. Modify pkcs12.c
11156 Also make SSL_SESSION_print() print out the verify return
11160 *) Add manpage for the pkcs12 command. Also change the default
11161 behaviour so MAC iteration counts are used unless the new
11162 -nomaciter option is used. This improves file security and
11163 only older versions of MSIE (4.0 for example) need it.
11166 *) Honor the no-xxx Configure options when creating .DEF files.
11169 *) Add PKCS#10 attributes to field table: challengePassword,
11170 unstructuredName and unstructuredAddress. These are taken from
11171 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
11172 international characters are used.
11174 More changes to X509_ATTRIBUTE code: allow the setting of types
11175 based on strings. Remove the 'loc' parameter when adding
11176 attributes because these will be a SET OF encoding which is sorted
11180 *) Initial changes to the 'req' utility to allow request generation
11181 automation. This will allow an application to just generate a template
11182 file containing all the field values and have req construct the
11185 Initial support for X509_ATTRIBUTE handling. Stacks of these are
11186 used all over the place including certificate requests and PKCS#7
11187 structures. They are currently handled manually where necessary with
11188 some primitive wrappers for PKCS#7. The new functions behave in a
11189 manner analogous to the X509 extension functions: they allow
11190 attributes to be looked up by NID and added.
11192 Later something similar to the X509V3 code would be desirable to
11193 automatically handle the encoding, decoding and printing of the
11194 more complex types. The string types like challengePassword can
11195 be handled by the string table functions.
11197 Also modified the multi byte string table handling. Now there is
11198 a 'global mask' which masks out certain types. The table itself
11199 can use the flag STABLE_NO_MASK to ignore the mask setting: this
11200 is useful when for example there is only one permissible type
11201 (as in countryName) and using the mask might result in no valid
11205 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
11206 SSL_get_peer_finished to allow applications to obtain the latest
11207 Finished messages sent to the peer or expected from the peer,
11208 respectively. (SSL_get_peer_finished is usually the Finished message
11209 actually received from the peer, otherwise the protocol will be aborted.)
11211 As the Finished message are message digests of the complete handshake
11212 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
11213 be used for external authentication procedures when the authentication
11214 provided by SSL/TLS is not desired or is not enough.
11217 *) Enhanced support for Alpha Linux is added. Now ./config checks if
11218 the host supports BWX extension and if Compaq C is present on the
11219 $PATH. Just exploiting of the BWX extension results in 20-30%
11220 performance kick for some algorithms, e.g. DES and RC4 to mention
11221 a couple. Compaq C in turn generates ~20% faster code for MD5 and
11225 *) Add support for MS "fast SGC". This is arguably a violation of the
11226 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
11227 weak crypto and after checking the certificate is SGC a second one
11228 with strong crypto. MS SGC stops the first handshake after receiving
11229 the server certificate message and sends a second client hello. Since
11230 a server will typically do all the time consuming operations before
11231 expecting any further messages from the client (server key exchange
11232 is the most expensive) there is little difference between the two.
11234 To get OpenSSL to support MS SGC we have to permit a second client
11235 hello message after we have sent server done. In addition we have to
11236 reset the MAC if we do get this second client hello.
11239 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
11240 if a DER encoded private key is RSA or DSA traditional format. Changed
11241 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
11242 format DER encoded private key. Newer code should use PKCS#8 format which
11243 has the key type encoded in the ASN1 structure. Added DER private key
11244 support to pkcs8 application.
11247 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
11248 ciphersuites has been selected (as required by the SSL 3/TLS 1
11249 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
11250 is set, we interpret this as a request to violate the specification
11251 (the worst that can happen is a handshake failure, and 'correct'
11252 behaviour would result in a handshake failure anyway).
11255 *) In SSL_CTX_add_session, take into account that there might be multiple
11256 SSL_SESSION structures with the same session ID (e.g. when two threads
11257 concurrently obtain them from an external cache).
11258 The internal cache can handle only one SSL_SESSION with a given ID,
11259 so if there's a conflict, we now throw out the old one to achieve
11263 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
11264 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
11265 some routines that use cipher OIDs: some ciphers do not have OIDs
11266 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
11270 *) Simplify the trust setting structure and code. Now we just have
11271 two sequences of OIDs for trusted and rejected settings. These will
11272 typically have values the same as the extended key usage extension
11273 and any application specific purposes.
11275 The trust checking code now has a default behaviour: it will just
11276 check for an object with the same NID as the passed id. Functions can
11277 be provided to override either the default behaviour or the behaviour
11278 for a given id. SSL client, server and email already have functions
11279 in place for compatibility: they check the NID and also return "trusted"
11280 if the certificate is self signed.
11283 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
11284 traditional format into an EVP_PKEY structure.
11287 *) Add a password callback function PEM_cb() which either prompts for
11288 a password if usr_data is NULL or otherwise assumes it is a null
11289 terminated password. Allow passwords to be passed on command line
11290 environment or config files in a few more utilities.
11293 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
11294 keys. Add some short names for PKCS#8 PBE algorithms and allow them
11295 to be specified on the command line for the pkcs8 and pkcs12 utilities.
11296 Update documentation.
11299 *) Support for ASN1 "NULL" type. This could be handled before by using
11300 ASN1_TYPE but there wasn't any function that would try to read a NULL
11301 and produce an error if it couldn't. For compatibility we also have
11302 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
11303 don't allocate anything because they don't need to.
11306 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
11308 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
11310 *) Rebuild of the memory allocation routines used by OpenSSL code and
11311 possibly others as well. The purpose is to make an interface that
11312 provide hooks so anyone can build a separate set of allocation and
11313 deallocation routines to be used by OpenSSL, for example memory
11314 pool implementations, or something else, which was previously hard
11315 since Malloc(), Realloc() and Free() were defined as macros having
11316 the values malloc, realloc and free, respectively (except for Win32
11317 compilations). The same is provided for memory debugging code.
11318 OpenSSL already comes with functionality to find memory leaks, but
11319 this gives people a chance to debug other memory problems.
11321 With these changes, a new set of functions and macros have appeared:
11323 CRYPTO_set_mem_debug_functions() [F]
11324 CRYPTO_get_mem_debug_functions() [F]
11325 CRYPTO_dbg_set_options() [F]
11326 CRYPTO_dbg_get_options() [F]
11327 CRYPTO_malloc_debug_init() [M]
11329 The memory debug functions are NULL by default, unless the library
11330 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
11331 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
11332 gives the standard debugging functions that come with OpenSSL) or
11333 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
11334 provided by the library user) must be used. When the standard
11335 debugging functions are used, CRYPTO_dbg_set_options can be used to
11336 request additional information:
11337 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
11338 the CRYPTO_MDEBUG_xxx macro when compiling the library.
11340 Also, things like CRYPTO_set_mem_functions will always give the
11341 expected result (the new set of functions is used for allocation
11342 and deallocation) at all times, regardless of platform and compiler
11345 To finish it up, some functions that were never use in any other
11346 way than through macros have a new API and new semantic:
11348 CRYPTO_dbg_malloc()
11349 CRYPTO_dbg_realloc()
11352 All macros of value have retained their old syntax.
11353 [Richard Levitte and Bodo Moeller]
11355 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
11356 ordering of SMIMECapabilities wasn't in "strength order" and there
11357 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
11361 *) Some ASN1 types with illegal zero length encoding (INTEGER,
11362 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
11363 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
11365 *) Merge in my S/MIME library for OpenSSL. This provides a simple
11366 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
11367 functionality to handle multipart/signed properly) and a utility
11368 called 'smime' to call all this stuff. This is based on code I
11369 originally wrote for Celo who have kindly allowed it to be
11370 included in OpenSSL.
11373 *) Add variants des_set_key_checked and des_set_key_unchecked of
11374 des_set_key (aka des_key_sched). Global variable des_check_key
11375 decides which of these is called by des_set_key; this way
11376 des_check_key behaves as it always did, but applications and
11377 the library itself, which was buggy for des_check_key == 1,
11378 have a cleaner way to pick the version they need.
11381 *) New function PKCS12_newpass() which changes the password of a
11385 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
11386 dynamic mix. In both cases the ids can be used as an index into the
11387 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
11388 functions so they accept a list of the field values and the
11389 application doesn't need to directly manipulate the X509_TRUST
11393 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
11397 *) Modify the way the V3 extension code looks up extensions. This now
11398 works in a similar way to the object code: we have some "standard"
11399 extensions in a static table which is searched with OBJ_bsearch()
11400 and the application can add dynamic ones if needed. The file
11401 crypto/x509v3/ext_dat.h now has the info: this file needs to be
11402 updated whenever a new extension is added to the core code and kept
11403 in ext_nid order. There is a simple program 'tabtest.c' which checks
11404 this. New extensions are not added too often so this file can readily
11405 be maintained manually.
11407 There are two big advantages in doing things this way. The extensions
11408 can be looked up immediately and no longer need to be "added" using
11409 X509V3_add_standard_extensions(): this function now does nothing.
11410 [Side note: I get *lots* of email saying the extension code doesn't
11411 work because people forget to call this function]
11412 Also no dynamic allocation is done unless new extensions are added:
11413 so if we don't add custom extensions there is no need to call
11414 X509V3_EXT_cleanup().
11417 *) Modify enc utility's salting as follows: make salting the default. Add a
11418 magic header, so unsalted files fail gracefully instead of just decrypting
11419 to garbage. This is because not salting is a big security hole, so people
11420 should be discouraged from doing it.
11423 *) Fixes and enhancements to the 'x509' utility. It allowed a message
11424 digest to be passed on the command line but it only used this
11425 parameter when signing a certificate. Modified so all relevant
11426 operations are affected by the digest parameter including the
11427 -fingerprint and -x509toreq options. Also -x509toreq choked if a
11428 DSA key was used because it didn't fix the digest.
11431 *) Initial certificate chain verify code. Currently tests the untrusted
11432 certificates for consistency with the verify purpose (which is set
11433 when the X509_STORE_CTX structure is set up) and checks the pathlength.
11435 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
11436 this is because it will reject chains with invalid extensions whereas
11437 every previous version of OpenSSL and SSLeay made no checks at all.
11439 Trust code: checks the root CA for the relevant trust settings. Trust
11440 settings have an initial value consistent with the verify purpose: e.g.
11441 if the verify purpose is for SSL client use it expects the CA to be
11442 trusted for SSL client use. However the default value can be changed to
11443 permit custom trust settings: one example of this would be to only trust
11444 certificates from a specific "secure" set of CAs.
11446 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
11447 which should be used for version portability: especially since the
11448 verify structure is likely to change more often now.
11450 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
11451 to set them. If not set then assume SSL clients will verify SSL servers
11454 Two new options to the verify program: -untrusted allows a set of
11455 untrusted certificates to be passed in and -purpose which sets the
11456 intended purpose of the certificate. If a purpose is set then the
11457 new chain verify code is used to check extension consistency.
11460 *) Support for the authority information access extension.
11463 *) Modify RSA and DSA PEM read routines to transparently handle
11464 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
11465 public keys in a format compatible with certificate
11466 SubjectPublicKeyInfo structures. Unfortunately there were already
11467 functions called *_PublicKey_* which used various odd formats so
11468 these are retained for compatibility: however the DSA variants were
11469 never in a public release so they have been deleted. Changed dsa/rsa
11470 utilities to handle the new format: note no releases ever handled public
11471 keys so we should be OK.
11473 The primary motivation for this change is to avoid the same fiasco
11474 that dogs private keys: there are several incompatible private key
11475 formats some of which are standard and some OpenSSL specific and
11476 require various evil hacks to allow partial transparent handling and
11477 even then it doesn't work with DER formats. Given the option anything
11478 other than PKCS#8 should be dumped: but the other formats have to
11479 stay in the name of compatibility.
11481 With public keys and the benefit of hindsight one standard format
11482 is used which works with EVP_PKEY, RSA or DSA structures: though
11483 it clearly returns an error if you try to read the wrong kind of key.
11485 Added a -pubkey option to the 'x509' utility to output the public key.
11486 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
11487 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
11488 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
11489 that do the same as the EVP_PKEY_assign_*() except they up the
11490 reference count of the added key (they don't "swallow" the
11494 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
11495 CRLs would fail if the file contained no certificates or no CRLs:
11496 added a new function to read in both types and return the number
11497 read: this means that if none are read it will be an error. The
11498 DER versions of the certificate and CRL reader would always fail
11499 because it isn't possible to mix certificates and CRLs in DER format
11500 without choking one or the other routine. Changed this to just read
11501 a certificate: this is the best we can do. Also modified the code
11502 in apps/verify.c to take notice of return codes: it was previously
11503 attempting to read in certificates from NULL pointers and ignoring
11504 any errors: this is one reason why the cert and CRL reader seemed
11505 to work. It doesn't check return codes from the default certificate
11506 routines: these may well fail if the certificates aren't installed.
11509 *) Code to support otherName option in GeneralName.
11512 *) First update to verify code. Change the verify utility
11513 so it warns if it is passed a self signed certificate:
11514 for consistency with the normal behaviour. X509_verify
11515 has been modified to it will now verify a self signed
11516 certificate if *exactly* the same certificate appears
11517 in the store: it was previously impossible to trust a
11518 single self signed certificate. This means that:
11519 openssl verify ss.pem
11520 now gives a warning about a self signed certificate but
11521 openssl verify -CAfile ss.pem ss.pem
11525 *) For servers, store verify_result in SSL_SESSION data structure
11526 (and add it to external session representation).
11527 This is needed when client certificate verifications fails,
11528 but an application-provided verification callback (set by
11529 SSL_CTX_set_cert_verify_callback) allows accepting the session
11530 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
11531 but returns 1): When the session is reused, we have to set
11532 ssl->verify_result to the appropriate error code to avoid
11534 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
11536 *) Fix a bug in the new PKCS#7 code: it didn't consider the
11537 case in PKCS7_dataInit() where the signed PKCS7 structure
11538 didn't contain any existing data because it was being created.
11539 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
11541 *) Add a salt to the key derivation routines in enc.c. This
11542 forms the first 8 bytes of the encrypted file. Also add a
11543 -S option to allow a salt to be input on the command line.
11546 *) New function X509_cmp(). Oddly enough there wasn't a function
11547 to compare two certificates. We do this by working out the SHA1
11548 hash and comparing that. X509_cmp() will be needed by the trust
11552 *) SSL_get1_session() is like SSL_get_session(), but increments
11553 the reference count in the SSL_SESSION returned.
11554 [Geoff Thorpe <geoff@eu.c2.net>]
11556 *) Fix for 'req': it was adding a null to request attributes.
11557 Also change the X509_LOOKUP and X509_INFO code to handle
11558 certificate auxiliary information.
11561 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
11565 *) Add the possibility to add extra information to the memory leak
11566 detecting output, to form tracebacks, showing from where each
11567 allocation was originated: CRYPTO_push_info("constant string") adds
11568 the string plus current file name and line number to a per-thread
11569 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
11570 is like calling CYRPTO_pop_info() until the stack is empty.
11571 Also updated memory leak detection code to be multi-thread-safe.
11574 *) Add options -text and -noout to pkcs7 utility and delete the
11575 encryption options which never did anything. Update docs.
11578 *) Add options to some of the utilities to allow the pass phrase
11579 to be included on either the command line (not recommended on
11580 OSes like Unix) or read from the environment. Update the
11581 manpages and fix a few bugs.
11584 *) Add a few manpages for some of the openssl commands.
11587 *) Fix the -revoke option in ca. It was freeing up memory twice,
11588 leaking and not finding already revoked certificates.
11591 *) Extensive changes to support certificate auxiliary information.
11592 This involves the use of X509_CERT_AUX structure and X509_AUX
11593 functions. An X509_AUX function such as PEM_read_X509_AUX()
11594 can still read in a certificate file in the usual way but it
11595 will also read in any additional "auxiliary information". By
11596 doing things this way a fair degree of compatibility can be
11597 retained: existing certificates can have this information added
11598 using the new 'x509' options.
11600 Current auxiliary information includes an "alias" and some trust
11601 settings. The trust settings will ultimately be used in enhanced
11602 certificate chain verification routines: currently a certificate
11603 can only be trusted if it is self signed and then it is trusted
11607 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
11608 The problem was that one of the replacement routines had not been working
11609 since SSLeay releases. For now the offending routine has been replaced
11610 with non-optimised assembler. Even so, this now gives around 95%
11611 performance improvement for 1024 bit RSA signs.
11614 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
11615 handling. Most clients have the effective key size in bits equal to
11616 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
11617 A few however don't do this and instead use the size of the decrypted key
11618 to determine the RC2 key length and the AlgorithmIdentifier to determine
11619 the effective key length. In this case the effective key length can still
11620 be 40 bits but the key length can be 168 bits for example. This is fixed
11621 by manually forcing an RC2 key into the EVP_PKEY structure because the
11622 EVP code can't currently handle unusual RC2 key sizes: it always assumes
11623 the key length and effective key length are equal.
11626 *) Add a bunch of functions that should simplify the creation of
11627 X509_NAME structures. Now you should be able to do:
11628 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
11629 and have it automatically work out the correct field type and fill in
11630 the structures. The more adventurous can try:
11631 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
11632 and it will (hopefully) work out the correct multibyte encoding.
11635 *) Change the 'req' utility to use the new field handling and multibyte
11636 copy routines. Before the DN field creation was handled in an ad hoc
11637 way in req, ca, and x509 which was rather broken and didn't support
11638 BMPStrings or UTF8Strings. Since some software doesn't implement
11639 BMPStrings or UTF8Strings yet, they can be enabled using the config file
11640 using the dirstring_type option. See the new comment in the default
11641 openssl.cnf for more info.
11644 *) Make crypto/rand/md_rand.c more robust:
11645 - Assure unique random numbers after fork().
11646 - Make sure that concurrent threads access the global counter and
11647 md serializably so that we never lose entropy in them
11648 or use exactly the same state in multiple threads.
11649 Access to the large state is not always serializable because
11650 the additional locking could be a performance killer, and
11651 md should be large enough anyway.
11654 *) New file apps/app_rand.c with commonly needed functionality
11655 for handling the random seed file.
11657 Use the random seed file in some applications that previously did not:
11659 dsaparam -genkey (which also ignored its '-rand' option),
11662 x509 (when signing).
11663 Except on systems with /dev/urandom, it is crucial to have a random
11664 seed file at least for key creation, DSA signing, and for DH exchanges;
11665 for RSA signatures we could do without one.
11667 gendh and gendsa (unlike genrsa) used to read only the first byte
11668 of each file listed in the '-rand' option. The function as previously
11669 found in genrsa is now in app_rand.c and is used by all programs
11670 that support '-rand'.
11673 *) In RAND_write_file, use mode 0600 for creating files;
11674 don't just chmod when it may be too late.
11677 *) Report an error from X509_STORE_load_locations
11678 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
11681 *) New function ASN1_mbstring_copy() this copies a string in either
11682 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
11683 into an ASN1_STRING type. A mask of permissible types is passed
11684 and it chooses the "minimal" type to use or an error if not type
11688 *) Add function equivalents to the various macros in asn1.h. The old
11689 macros are retained with an M_ prefix. Code inside the library can
11690 use the M_ macros. External code (including the openssl utility)
11691 should *NOT* in order to be "shared library friendly".
11694 *) Add various functions that can check a certificate's extensions
11695 to see if it usable for various purposes such as SSL client,
11696 server or S/MIME and CAs of these types. This is currently
11697 VERY EXPERIMENTAL but will ultimately be used for certificate chain
11698 verification. Also added a -purpose flag to x509 utility to
11699 print out all the purposes.
11702 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
11706 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
11707 for, obtain and decode and extension and obtain its critical flag.
11708 This allows all the necessary extension code to be handled in a
11709 single function call.
11712 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
11713 platforms. See crypto/rc4/rc4_enc.c for further details.
11716 *) New -noout option to asn1parse. This causes no output to be produced
11717 its main use is when combined with -strparse and -out to extract data
11718 from a file (which may not be in ASN.1 format).
11721 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
11722 when producing the local key id.
11723 [Richard Levitte <levitte@stacken.kth.se>]
11725 *) New option -dhparam in s_server. This allows a DH parameter file to be
11726 stated explicitly. If it is not stated then it tries the first server
11727 certificate file. The previous behaviour hard coded the filename
11731 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
11732 a public key to be input or output. For example:
11733 openssl rsa -in key.pem -pubout -out pubkey.pem
11734 Also added necessary DSA public key functions to handle this.
11737 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
11738 in the message. This was handled by allowing
11739 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
11740 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
11742 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
11743 to the end of the strings whereas this didn't. This would cause problems
11744 if strings read with d2i_ASN1_bytes() were later modified.
11745 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
11747 *) Fix for base64 decode bug. When a base64 bio reads only one line of
11748 data and it contains EOF it will end up returning an error. This is
11749 caused by input 46 bytes long. The cause is due to the way base64
11750 BIOs find the start of base64 encoded data. They do this by trying a
11751 trial decode on each line until they find one that works. When they
11752 do a flag is set and it starts again knowing it can pass all the
11753 data directly through the decoder. Unfortunately it doesn't reset
11754 the context it uses. This means that if EOF is reached an attempt
11755 is made to pass two EOFs through the context and this causes the
11756 resulting error. This can also cause other problems as well. As is
11757 usual with these problems it takes *ages* to find and the fix is
11758 trivial: move one line.
11759 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
11761 *) Ugly workaround to get s_client and s_server working under Windows. The
11762 old code wouldn't work because it needed to select() on sockets and the
11763 tty (for keypresses and to see if data could be written). Win32 only
11764 supports select() on sockets so we select() with a 1s timeout on the
11765 sockets and then see if any characters are waiting to be read, if none
11766 are present then we retry, we also assume we can always write data to
11767 the tty. This isn't nice because the code then blocks until we've
11768 received a complete line of data and it is effectively polling the
11769 keyboard at 1s intervals: however it's quite a bit better than not
11770 working at all :-) A dedicated Windows application might handle this
11771 with an event loop for example.
11774 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
11775 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
11776 will be called when RSA_sign() and RSA_verify() are used. This is useful
11777 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
11778 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
11779 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
11780 This necessitated the support of an extra signature type NID_md5_sha1
11781 for SSL signatures and modifications to the SSL library to use it instead
11782 of calling RSA_public_decrypt() and RSA_private_encrypt().
11785 *) Add new -verify -CAfile and -CApath options to the crl program, these
11786 will lookup a CRL issuers certificate and verify the signature in a
11787 similar way to the verify program. Tidy up the crl program so it
11788 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
11789 less strict. It will now permit CRL extensions even if it is not
11790 a V2 CRL: this will allow it to tolerate some broken CRLs.
11793 *) Initialize all non-automatic variables each time one of the openssl
11794 sub-programs is started (this is necessary as they may be started
11795 multiple times from the "OpenSSL>" prompt).
11796 [Lennart Bang, Bodo Moeller]
11798 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
11799 removing all other RSA functionality (this is what NO_RSA does). This
11800 is so (for example) those in the US can disable those operations covered
11801 by the RSA patent while allowing storage and parsing of RSA keys and RSA
11805 *) Non-copying interface to BIO pairs.
11806 (still largely untested)
11809 *) New function ASN1_tag2str() to convert an ASN1 tag to a descriptive
11810 ASCII string. This was handled independently in various places before.
11813 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
11814 UTF8 strings a character at a time.
11817 *) Use client_version from client hello to select the protocol
11818 (s23_srvr.c) and for RSA client key exchange verification
11819 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
11822 *) Add various utility functions to handle SPKACs, these were previously
11823 handled by poking round in the structure internals. Added new function
11824 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
11825 print, verify and generate SPKACs. Based on an original idea from
11826 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
11829 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
11832 *) Allow the config file extension section to be overwritten on the
11833 command line. Based on an original idea from Massimiliano Pala
11834 <madwolf@comune.modena.it>. The new option is called -extensions
11835 and can be applied to ca, req and x509. Also -reqexts to override
11836 the request extensions in req and -crlexts to override the crl extensions
11840 *) Add new feature to the SPKAC handling in ca. Now you can include
11841 the same field multiple times by preceding it by "XXXX." for example:
11844 this is the same syntax as used in the req config file.
11847 *) Allow certificate extensions to be added to certificate requests. These
11848 are specified in a 'req_extensions' option of the req section of the
11849 config file. They can be printed out with the -text option to req but
11850 are otherwise ignored at present.
11853 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
11854 data read consists of only the final block it would not decrypted because
11855 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
11856 A misplaced 'break' also meant the decrypted final block might not be
11857 copied until the next read.
11860 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
11861 a few extra parameters to the DH structure: these will be useful if
11862 for example we want the value of 'q' or implement X9.42 DH.
11865 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
11866 provides hooks that allow the default DSA functions or functions on a
11867 "per key" basis to be replaced. This allows hardware acceleration and
11868 hardware key storage to be handled without major modification to the
11869 library. Also added low level modexp hooks and CRYPTO_EX structure and
11870 associated functions.
11873 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
11874 as "read only": it can't be written to and the buffer it points to will
11875 not be freed. Reading from a read only BIO is much more efficient than
11876 a normal memory BIO. This was added because there are several times when
11877 an area of memory needs to be read from a BIO. The previous method was
11878 to create a memory BIO and write the data to it, this results in two
11879 copies of the data and an O(n^2) reading algorithm. There is a new
11880 function BIO_new_mem_buf() which creates a read only memory BIO from
11881 an area of memory. Also modified the PKCS#7 routines to use read only
11885 *) Bugfix: ssl23_get_client_hello did not work properly when called in
11886 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
11887 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
11888 but a retry condition occurred while trying to read the rest.
11891 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
11892 NID_pkcs7_encrypted by default: this was wrong since this should almost
11893 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
11894 the encrypted data type: this is a more sensible place to put it and it
11895 allows the PKCS#12 code to be tidied up that duplicated this
11899 *) Changed obj_dat.pl script so it takes its input and output files on
11900 the command line. This should avoid shell escape redirection problems
11904 *) Initial support for certificate extension requests, these are included
11905 in things like Xenroll certificate requests. Included functions to allow
11906 extensions to be obtained and added.
11909 *) -crlf option to s_client and s_server for sending newlines as
11910 CRLF (as required by many protocols).
11913 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
11915 *) Install libRSAglue.a when OpenSSL is built with RSAref.
11916 [Ralf S. Engelschall]
11918 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
11919 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
11921 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
11925 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
11926 DH parameters/keys (q is lost during that conversion, but the resulting
11927 DH parameters contain its length).
11929 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
11930 much faster than DH_generate_parameters (which creates parameters
11931 where p = 2*q + 1), and also the smaller q makes DH computations
11932 much more efficient (160-bit exponentiation instead of 1024-bit
11933 exponentiation); so this provides a convenient way to support DHE
11934 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
11935 utter importance to use
11936 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
11938 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
11939 when such DH parameters are used, because otherwise small subgroup
11940 attacks may become possible!
11943 *) Avoid memory leak in i2d_DHparams.
11946 *) Allow the -k option to be used more than once in the enc program:
11947 this allows the same encrypted message to be read by multiple recipients.
11950 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
11951 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
11952 it will always use the numerical form of the OID, even if it has a short
11956 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
11957 method only got called if p,q,dmp1,dmq1,iqmp components were present,
11958 otherwise bn_mod_exp was called. In the case of hardware keys for example
11959 no private key components need be present and it might store extra data
11960 in the RSA structure, which cannot be accessed from bn_mod_exp.
11961 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
11962 private key operations.
11965 *) Added support for SPARC Linux.
11968 *) pem_password_cb function type incompatibly changed from
11969 typedef int pem_password_cb(char *buf, int size, int rwflag);
11971 ....(char *buf, int size, int rwflag, void *userdata);
11972 so that applications can pass data to their callbacks:
11973 The PEM[_ASN1]_{read,write}... functions and macros now take an
11974 additional void * argument, which is just handed through whenever
11975 the password callback is called.
11976 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
11978 New function SSL_CTX_set_default_passwd_cb_userdata.
11980 Compatibility note: As many C implementations push function arguments
11981 onto the stack in reverse order, the new library version is likely to
11982 interoperate with programs that have been compiled with the old
11983 pem_password_cb definition (PEM_whatever takes some data that
11984 happens to be on the stack as its last argument, and the callback
11985 just ignores this garbage); but there is no guarantee whatsoever that
11988 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
11989 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
11990 problems not only on Windows, but also on some Unix platforms.
11991 To avoid problematic command lines, these definitions are now in an
11992 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
11993 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
11996 *) MIPS III/IV assembler module is reimplemented.
11999 *) More DES library cleanups: remove references to srand/rand and
12000 delete an unused file.
12003 *) Add support for the free Netwide assembler (NASM) under Win32,
12004 since not many people have MASM (ml) and it can be hard to obtain.
12005 This is currently experimental but it seems to work OK and pass all
12006 the tests. Check out INSTALL.W32 for info.
12009 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
12010 without temporary keys kept an extra copy of the server key,
12011 and connections with temporary keys did not free everything in case
12015 *) New function RSA_check_key and new openssl rsa option -check
12016 for verifying the consistency of RSA keys.
12017 [Ulf Moeller, Bodo Moeller]
12019 *) Various changes to make Win32 compile work:
12020 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
12021 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
12022 comparison" warnings.
12023 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
12026 *) Add a debugging option to PKCS#5 v2 key generation function: when
12027 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
12028 derived keys are printed to stderr.
12031 *) Copy the flags in ASN1_STRING_dup().
12032 [Roman E. Pavlov <pre@mo.msk.ru>]
12034 *) The x509 application mishandled signing requests containing DSA
12035 keys when the signing key was also DSA and the parameters didn't match.
12037 It was supposed to omit the parameters when they matched the signing key:
12038 the verifying software was then supposed to automatically use the CA's
12039 parameters if they were absent from the end user certificate.
12041 Omitting parameters is no longer recommended. The test was also
12042 the wrong way round! This was probably due to unusual behaviour in
12043 EVP_cmp_parameters() which returns 1 if the parameters match.
12044 This meant that parameters were omitted when they *didn't* match and
12045 the certificate was useless. Certificates signed with 'ca' didn't have
12047 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
12049 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
12050 The interface is as follows:
12051 Applications can use
12052 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
12053 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
12054 "off" is now the default.
12055 The library internally uses
12056 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
12057 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
12058 to disable memory-checking temporarily.
12060 Some inconsistent states that previously were possible (and were
12061 even the default) are now avoided.
12063 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
12064 with each memory chunk allocated; this is occasionally more helpful
12065 than just having a counter.
12067 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
12069 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
12073 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
12074 which largely parallels "options", but is for changing API behaviour,
12075 whereas "options" are about protocol behaviour.
12076 Initial "mode" flags are:
12078 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
12079 a single record has been written.
12080 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
12081 retries use the same buffer location.
12082 (But all of the contents must be
12086 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
12089 *) Fix problems with no-hmac etc.
12090 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
12092 *) New functions RSA_get_default_method(), RSA_set_method() and
12093 RSA_get_method(). These allows replacement of RSA_METHODs without having
12094 to mess around with the internals of an RSA structure.
12097 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
12098 Also really enable memory leak checks in openssl.c and in some
12100 [Chad C. Mulligan, Bodo Moeller]
12102 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
12103 up the length of negative integers. This has now been simplified to just
12104 store the length when it is first determined and use it later, rather
12105 than trying to keep track of where data is copied and updating it to
12107 [Steve Henson, reported by Brien Wheeler
12108 <bwheeler@authentica-security.com>]
12110 *) Add a new function PKCS7_signatureVerify. This allows the verification
12111 of a PKCS#7 signature but with the signing certificate passed to the
12112 function itself. This contrasts with PKCS7_dataVerify which assumes the
12113 certificate is present in the PKCS#7 structure. This isn't always the
12114 case: certificates can be omitted from a PKCS#7 structure and be
12115 distributed by "out of band" means (such as a certificate database).
12118 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
12119 function prototypes in pem.h, also change util/mkdef.pl to add the
12120 necessary function names.
12123 *) mk1mf.pl (used by Windows builds) did not properly read the
12124 options set by Configure in the top level Makefile, and Configure
12125 was not even able to write more than one option correctly.
12126 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
12129 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
12130 file to be loaded from a BIO or FILE pointer. The BIO version will
12131 for example allow memory BIOs to contain config info.
12134 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
12135 Whoever hopes to achieve shared-library compatibility across versions
12136 must use this, not the compile-time macro.
12137 (Exercise 0.9.4: Which is the minimum library version required by
12139 Note: All this applies only to multi-threaded programs, others don't
12143 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
12144 through a BIO pair triggered the default case, i.e.
12145 SSLerr(...,SSL_R_UNKNOWN_STATE).
12148 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
12149 can use the SSL library even if none of the specific BIOs is
12153 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
12154 for the encoded length.
12155 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
12157 *) Add initial documentation of the X509V3 functions.
12160 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
12161 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
12162 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
12163 secure PKCS#8 private key format with a high iteration count.
12166 *) Fix determination of Perl interpreter: A perl or perl5
12167 _directory_ in $PATH was also accepted as the interpreter.
12168 [Ralf S. Engelschall]
12170 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
12171 wrong with it but it was very old and did things like calling
12172 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
12173 unusual formatting.
12176 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
12177 to use the new extension code.
12180 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
12181 with macros. This should make it easier to change their form, add extra
12182 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
12186 *) Add to configuration table a new entry that can specify an alternative
12187 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
12188 according to Mark Crispin <MRC@Panda.COM>.
12192 *) DES CBC did not update the IV. Weird.
12195 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
12196 Changing the behaviour of the former might break existing programs --
12197 where IV updating is needed, des_ncbc_encrypt can be used.
12200 *) When bntest is run from "make test" it drives bc to check its
12201 calculations, as well as internally checking them. If an internal check
12202 fails, it needs to cause bc to give a non-zero result or make test carries
12203 on without noticing the failure. Fixed.
12206 *) DES library cleanups.
12209 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
12210 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
12211 ciphers. NOTE: although the key derivation function has been verified
12212 against some published test vectors it has not been extensively tested
12213 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
12217 *) Instead of "mkdir -p", which is not fully portable, use new
12218 Perl script "util/mkdir-p.pl".
12221 *) Rewrite the way password based encryption (PBE) is handled. It used to
12222 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
12223 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
12224 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
12225 the 'parameter' field of the AlgorithmIdentifier is passed to the
12226 underlying key generation function so it must do its own ASN1 parsing.
12227 This has also changed the EVP_PBE_CipherInit() function which now has a
12228 'parameter' argument instead of literal salt and iteration count values
12229 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
12232 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
12233 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
12234 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
12235 KEY" because this clashed with PKCS#8 unencrypted string. Since this
12236 value was just used as a "magic string" and not used directly its
12237 value doesn't matter.
12240 *) Introduce some semblance of const correctness to BN. Shame C doesn't
12244 *) "linux-sparc64" configuration (ultrapenguin).
12245 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
12246 "linux-sparc" configuration.
12247 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
12249 *) config now generates no-xxx options for missing ciphers.
12252 *) Support the EBCDIC character set (work in progress).
12253 File ebcdic.c not yet included because it has a different license.
12254 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12256 *) Support BS2000/OSD-POSIX.
12257 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12259 *) Make callbacks for key generation use void * instead of char *.
12262 *) Make S/MIME samples compile (not yet tested).
12265 *) Additional typesafe stacks.
12268 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
12272 Changes between 0.9.3 and 0.9.3a [29 May 1999]
12274 *) New configuration variant "sco5-gcc".
12276 *) Updated some demos.
12277 [Sean O Riordain, Wade Scholine]
12279 *) Add missing BIO_free at exit of pkcs12 application.
12282 *) Fix memory leak in conf.c.
12285 *) Updates for Win32 to assembler version of MD5.
12288 *) Set #! path to perl in apps/der_chop to where we found it
12289 instead of using a fixed path.
12292 *) SHA library changes for irix64-mips4-cc.
12295 *) Improvements for VMS support.
12299 Changes between 0.9.2b and 0.9.3 [24 May 1999]
12301 *) Bignum library bug fix. IRIX 6 passes "make test" now!
12302 This also avoids the problems with SC4.2 and unpatched SC5.
12303 [Andy Polyakov <appro@fy.chalmers.se>]
12305 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
12306 These are required because of the typesafe stack would otherwise break
12307 existing code. If old code used a structure member which used to be STACK
12308 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
12309 sk_num or sk_value it would produce an error because the num, data members
12310 are not present in STACK_OF. Now it just produces a warning. sk_set
12311 replaces the old method of assigning a value to sk_value
12312 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
12313 that does this will no longer work (and should use sk_set instead) but
12314 this could be regarded as a "questionable" behaviour anyway.
12317 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
12318 correctly handle encrypted S/MIME data.
12321 *) Change type of various DES function arguments from des_cblock
12322 (which means, in function argument declarations, pointer to char)
12323 to des_cblock * (meaning pointer to array with 8 char elements),
12324 which allows the compiler to do more typechecking; it was like
12325 that back in SSLeay, but with lots of ugly casts.
12327 Introduce new type const_des_cblock.
12330 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
12331 problems: find RecipientInfo structure that matches recipient certificate
12332 and initialise the ASN1 structures properly based on passed cipher.
12335 *) Belatedly make the BN tests actually check the results.
12338 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
12339 to and from BNs: it was completely broken. New compilation option
12340 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
12341 key elements as negative integers.
12344 *) Reorganize and speed up MD5.
12345 [Andy Polyakov <appro@fy.chalmers.se>]
12348 [Richard Levitte <richard@levitte.org>]
12350 *) New option -out to asn1parse to allow the parsed structure to be
12351 output to a file. This is most useful when combined with the -strparse
12352 option to examine the output of things like OCTET STRINGS.
12355 *) Make SSL library a little more fool-proof by not requiring any longer
12356 that SSL_set_{accept,connect}_state be called before
12357 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
12358 in many applications because usually everything *appeared* to work as
12359 intended anyway -- now it really works as intended).
12362 *) Move openssl.cnf out of lib/.
12365 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
12366 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
12367 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
12368 [Ralf S. Engelschall]
12370 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
12371 handle PKCS#7 enveloped data properly.
12372 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
12374 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
12375 copying pointers. The cert_st handling is changed by this in
12376 various ways (and thus what used to be known as ctx->default_cert
12377 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
12378 any longer when s->cert does not give us what we need).
12379 ssl_cert_instantiate becomes obsolete by this change.
12380 As soon as we've got the new code right (possibly it already is?),
12381 we have solved a couple of bugs of the earlier code where s->cert
12382 was used as if it could not have been shared with other SSL structures.
12384 Note that using the SSL API in certain dirty ways now will result
12385 in different behaviour than observed with earlier library versions:
12386 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
12387 does not influence s as it used to.
12389 In order to clean up things more thoroughly, inside SSL_SESSION
12390 we don't use CERT any longer, but a new structure SESS_CERT
12391 that holds per-session data (if available); currently, this is
12392 the peer's certificate chain and, for clients, the server's certificate
12393 and temporary key. CERT holds only those values that can have
12394 meaningful defaults in an SSL_CTX.
12397 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
12398 from the internal representation. Various PKCS#7 fixes: remove some
12399 evil casts and set the enc_dig_alg field properly based on the signing
12403 *) Allow PKCS#12 password to be set from the command line or the
12404 environment. Let 'ca' get its config file name from the environment
12405 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
12409 *) Allow certificate policies extension to use an IA5STRING for the
12410 organization field. This is contrary to the PKIX definition but
12411 VeriSign uses it and IE5 only recognises this form. Document 'x509'
12415 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
12416 without disallowing inline assembler and the like for non-pedantic builds.
12419 *) Support Borland C++ builder.
12420 [Janez Jere <jj@void.si>, modified by Ulf Möller]
12422 *) Support Mingw32.
12425 *) SHA-1 cleanups and performance enhancements.
12426 [Andy Polyakov <appro@fy.chalmers.se>]
12428 *) Sparc v8plus assembler for the bignum library.
12429 [Andy Polyakov <appro@fy.chalmers.se>]
12431 *) Accept any -xxx and +xxx compiler options in Configure.
12434 *) Update HPUX configuration.
12437 *) Add missing sk_<type>_unshift() function to safestack.h
12438 [Ralf S. Engelschall]
12440 *) New function SSL_CTX_use_certificate_chain_file that sets the
12441 "extra_cert"s in addition to the certificate. (This makes sense
12442 only for "PEM" format files, as chains as a whole are not
12446 *) Support verify_depth from the SSL API.
12447 x509_vfy.c had what can be considered an off-by-one-error:
12448 Its depth (which was not part of the external interface)
12449 was actually counting the number of certificates in a chain;
12450 now it really counts the depth.
12453 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
12454 instead of X509err, which often resulted in confusing error
12455 messages since the error codes are not globally unique
12456 (e.g. an alleged error in ssl3_accept when a certificate
12457 didn't match the private key).
12459 *) New function SSL_CTX_set_session_id_context that allows to set a default
12460 value (so that you don't need SSL_set_session_id_context for each
12461 connection using the SSL_CTX).
12464 *) OAEP decoding bug fix.
12467 *) Support INSTALL_PREFIX for package builders, as proposed by
12471 *) New Configure options "threads" and "no-threads". For systems
12472 where the proper compiler options are known (currently Solaris
12473 and Linux), "threads" is the default.
12476 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
12479 *) Install various scripts to $(OPENSSLDIR)/misc, not to
12480 $(INSTALLTOP)/bin -- they shouldn't clutter directories
12481 such as /usr/local/bin.
12484 *) "make linux-shared" to build shared libraries.
12485 [Niels Poppe <niels@netbox.org>]
12487 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
12490 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
12491 extension adding in x509 utility.
12494 *) Remove NOPROTO sections and error code comments.
12497 *) Partial rewrite of the DEF file generator to now parse the ANSI
12501 *) New Configure options --prefix=DIR and --openssldir=DIR.
12504 *) Complete rewrite of the error code script(s). It is all now handled
12505 by one script at the top level which handles error code gathering,
12506 header rewriting and C source file generation. It should be much better
12507 than the old method: it now uses a modified version of Ulf's parser to
12508 read the ANSI prototypes in all header files (thus the old K&R definitions
12509 aren't needed for error creation any more) and do a better job of
12510 translating function codes into names. The old 'ASN1 error code imbedded
12511 in a comment' is no longer necessary and it doesn't use .err files which
12512 have now been deleted. Also the error code call doesn't have to appear all
12513 on one line (which resulted in some large lines...).
12516 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
12519 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
12520 0 (which usually indicates a closed connection), but continue reading.
12523 *) Fix some race conditions.
12526 *) Add support for CRL distribution points extension. Add Certificate
12527 Policies and CRL distribution points documentation.
12530 *) Move the autogenerated header file parts to crypto/opensslconf.h.
12533 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
12534 8 of keying material. Merlin has also confirmed interop with this fix
12535 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
12536 [Merlin Hughes <merlin@baltimore.ie>]
12538 *) Fix lots of warnings.
12539 [Richard Levitte <levitte@stacken.kth.se>]
12541 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
12542 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
12543 [Richard Levitte <levitte@stacken.kth.se>]
12545 *) Fix problems with sizeof(long) == 8.
12546 [Andy Polyakov <appro@fy.chalmers.se>]
12548 *) Change functions to ANSI C.
12551 *) Fix typos in error codes.
12552 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
12554 *) Remove defunct assembler files from Configure.
12557 *) SPARC v8 assembler BIGNUM implementation.
12558 [Andy Polyakov <appro@fy.chalmers.se>]
12560 *) Support for Certificate Policies extension: both print and set.
12561 Various additions to support the r2i method this uses.
12564 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
12565 return a const string when you are expecting an allocated buffer.
12568 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
12569 types DirectoryString and DisplayText.
12572 *) Add code to allow r2i extensions to access the configuration database,
12573 add an LHASH database driver and add several ctx helper functions.
12576 *) Fix an evil bug in bn_expand2() which caused various BN functions to
12577 fail when they extended the size of a BIGNUM.
12580 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
12581 support typesafe stack.
12584 *) Fix typo in SSL_[gs]et_options().
12585 [Nils Frostberg <nils@medcom.se>]
12587 *) Delete various functions and files that belonged to the (now obsolete)
12588 old X509V3 handling code.
12591 *) New Configure option "rsaref".
12594 *) Don't auto-generate pem.h.
12597 *) Introduce type-safe ASN.1 SETs.
12600 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
12601 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
12603 *) Introduce type-safe STACKs. This will almost certainly break lots of code
12604 that links with OpenSSL (well at least cause lots of warnings), but fear
12605 not: the conversion is trivial, and it eliminates loads of evil casts. A
12606 few STACKed things have been converted already. Feel free to convert more.
12607 In the fullness of time, I'll do away with the STACK type altogether.
12610 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
12611 specified in <certfile> by updating the entry in the index.txt file.
12612 This way one no longer has to edit the index.txt file manually for
12613 revoking a certificate. The -revoke option does the gory details now.
12614 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
12616 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
12617 `-text' option at all and this way the `-noout -text' combination was
12618 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
12619 [Ralf S. Engelschall]
12621 *) Make sure a corresponding plain text error message exists for the
12622 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
12623 verify callback function determined that a certificate was revoked.
12624 [Ralf S. Engelschall]
12626 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
12627 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
12628 all available ciphers including rc5, which was forgotten until now.
12629 In order to let the testing shell script know which algorithms
12630 are available, a new (up to now undocumented) command
12631 "openssl list-cipher-commands" is used.
12634 *) Bugfix: s_client occasionally would sleep in select() when
12635 it should have checked SSL_pending() first.
12638 *) New functions DSA_do_sign and DSA_do_verify to provide access to
12639 the raw DSA values prior to ASN.1 encoding.
12642 *) Tweaks to Configure
12643 [Niels Poppe <niels@netbox.org>]
12645 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
12649 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
12652 *) New config option to avoid instructions that are illegal on the 80386.
12653 The default code is faster, but requires at least a 486.
12656 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
12657 SSL2_SERVER_VERSION (not used at all) macros, which are now the
12658 same as SSL2_VERSION anyway.
12661 *) New "-showcerts" option for s_client.
12664 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
12665 application. Various cleanups and fixes.
12668 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
12669 modify error routines to work internally. Add error codes and PBE init
12670 to library startup routines.
12673 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
12674 packing functions to asn1 and evp. Changed function names and error
12675 codes along the way.
12678 *) PKCS12 integration: and so it begins... First of several patches to
12679 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
12680 objects to objects.h
12683 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
12684 and display support for Thawte strong extranet extension.
12687 *) Add LinuxPPC support.
12688 [Jeff Dubrule <igor@pobox.org>]
12690 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
12691 bn_div_words in alpha.s.
12692 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
12694 *) Make sure the RSA OAEP test is skipped under -DRSAref because
12695 OAEP isn't supported when OpenSSL is built with RSAref.
12696 [Ulf Moeller <ulf@fitug.de>]
12698 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
12699 so they no longer are missing under -DNOPROTO.
12700 [Soren S. Jorvang <soren@t.dk>]
12703 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
12705 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
12706 doesn't work when the session is reused. Coming soon!
12709 *) Fix a security hole, that allows sessions to be reused in the wrong
12710 context thus bypassing client cert protection! All software that uses
12711 client certs and session caches in multiple contexts NEEDS PATCHING to
12712 allow session reuse! A fuller solution is in the works.
12713 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
12715 *) Some more source tree cleanups (removed obsolete files
12716 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
12717 permission on "config" script to be executable) and a fix for the INSTALL
12719 [Ulf Moeller <ulf@fitug.de>]
12721 *) Remove some legacy and erroneous uses of malloc, free instead of
12723 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
12725 *) Make rsa_oaep_test return non-zero on error.
12726 [Ulf Moeller <ulf@fitug.de>]
12728 *) Add support for native Solaris shared libraries. Configure
12729 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
12730 if someone would make that last step automatic.
12731 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
12733 *) ctx_size was not built with the right compiler during "make links". Fixed.
12736 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
12737 except NULL ciphers". This means the default cipher list will no longer
12738 enable NULL ciphers. They need to be specifically enabled e.g. with
12739 the string "DEFAULT:eNULL".
12742 *) Fix to RSA private encryption routines: if p < q then it would
12743 occasionally produce an invalid result. This will only happen with
12744 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
12747 *) Be less restrictive and allow also `perl util/perlpath.pl
12748 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
12749 because this way one can also use an interpreter named `perl5' (which is
12750 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
12751 installed as `perl').
12752 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12754 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
12755 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12757 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
12758 advapi32.lib to Win32 build and change the pem test comparison
12759 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
12760 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
12761 and crypto/des/ede_cbcm_enc.c.
12764 *) DES quad checksum was broken on big-endian architectures. Fixed.
12767 *) Comment out two functions in bio.h that aren't implemented. Fix up the
12768 Win32 test batch file so it (might) work again. The Win32 test batch file
12769 is horrible: I feel ill....
12772 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
12773 in e_os.h. Audit of header files to check ANSI and non ANSI
12774 sections: 10 functions were absent from non ANSI section and not exported
12775 from Windows DLLs. Fixed up libeay.num for new functions.
12778 *) Make `openssl version' output lines consistent.
12779 [Ralf S. Engelschall]
12781 *) Fix Win32 symbol export lists for BIO functions: Added
12782 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
12783 to ms/libeay{16,32}.def.
12784 [Ralf S. Engelschall]
12786 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
12787 fine under Unix and passes some trivial tests I've now added. But the
12788 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
12789 added to make sure no one expects that this stuff really works in the
12790 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
12791 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
12793 [Ralf S. Engelschall]
12795 *) Fix the generation of two part addresses in perl.
12796 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
12798 *) Add config entry for Linux on MIPS.
12799 [John Tobey <jtobey@channel1.com>]
12801 *) Make links whenever Configure is run, unless we are on Windoze.
12804 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
12805 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
12809 *) Add a useful kludge to allow package maintainers to specify compiler and
12810 other platforms details on the command line without having to patch the
12811 Configure script everytime: One now can use ``perl Configure
12812 <id>:<details>'', i.e. platform ids are allowed to have details appended
12813 to them (separated by colons). This is treated as there would be a static
12814 pre-configured entry in Configure's %table under key <id> with value
12815 <details> and ``perl Configure <id>'' is called. So, when you want to
12816 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
12817 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
12818 now, which overrides the FreeBSD-elf entry on-the-fly.
12819 [Ralf S. Engelschall]
12821 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
12824 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
12825 on the `perl Configure ...' command line. This way one can compile
12826 OpenSSL libraries with Position Independent Code (PIC) which is needed
12827 for linking it into DSOs.
12828 [Ralf S. Engelschall]
12830 *) Remarkably, export ciphers were totally broken and no-one had noticed!
12834 *) Cleaned up the LICENSE document: The official contact for any license
12835 questions now is the OpenSSL core team under openssl-core@openssl.org.
12836 And add a paragraph about the dual-license situation to make sure people
12837 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
12838 to the OpenSSL toolkit.
12839 [Ralf S. Engelschall]
12841 *) General source tree makefile cleanups: Made `making xxx in yyy...'
12842 display consistent in the source tree and replaced `/bin/rm' by `rm'.
12843 Additionally cleaned up the `make links' target: Remove unnecessary
12844 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
12845 to speed processing and no longer clutter the display with confusing
12846 stuff. Instead only the actually done links are displayed.
12847 [Ralf S. Engelschall]
12849 *) Permit null encryption ciphersuites, used for authentication only. It used
12850 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
12851 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
12855 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
12856 signed attributes when verifying signatures (this would break them),
12857 the detached data encoding was wrong and public keys obtained using
12858 X509_get_pubkey() weren't freed.
12861 *) Add text documentation for the BUFFER functions. Also added a work around
12862 to a Win95 console bug. This was triggered by the password read stuff: the
12863 last character typed gets carried over to the next fread(). If you were
12864 generating a new cert request using 'req' for example then the last
12865 character of the passphrase would be CR which would then enter the first
12869 *) Added the new `Includes OpenSSL Cryptography Software' button as
12870 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
12871 button and can be used by applications based on OpenSSL to show the
12872 relationship to the OpenSSL project.
12873 [Ralf S. Engelschall]
12875 *) Remove confusing variables in function signatures in files
12876 ssl/ssl_lib.c and ssl/ssl.h.
12877 [Lennart Bong <lob@kulthea.stacken.kth.se>]
12879 *) Don't install bss_file.c under PREFIX/include/
12880 [Lennart Bong <lob@kulthea.stacken.kth.se>]
12882 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
12883 functions that return function pointers and has support for NT specific
12884 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
12885 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
12886 unsigned to signed types: this was killing the Win32 compile.
12889 *) Add new certificate file to stack functions,
12890 SSL_add_dir_cert_subjects_to_stack() and
12891 SSL_add_file_cert_subjects_to_stack(). These largely supplant
12892 SSL_load_client_CA_file(), and can be used to add multiple certs easily
12893 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
12894 This means that Apache-SSL and similar packages don't have to mess around
12895 to add as many CAs as they want to the preferred list.
12898 *) Experiment with doxygen documentation. Currently only partially applied to
12900 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
12901 openssl.doxy as the configuration file.
12904 *) Get rid of remaining C++-style comments which strict C compilers hate.
12905 [Ralf S. Engelschall, pointed out by Carlos Amengual]
12907 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
12908 compiled in by default: it has problems with large keys.
12911 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
12912 DH private keys and/or callback functions which directly correspond to
12913 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
12914 is needed for applications which have to configure certificates on a
12915 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
12917 For the RSA certificate situation is makes no difference, but
12918 for the DSA certificate situation this fixes the "no shared cipher"
12919 problem where the OpenSSL cipher selection procedure failed because the
12920 temporary keys were not overtaken from the context and the API provided
12921 no way to reconfigure them.
12922 The new functions now let applications reconfigure the stuff and they
12923 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
12924 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
12925 non-public-API function ssl_cert_instantiate() is used as a helper
12926 function and also to reduce code redundancy inside ssl_rsa.c.
12927 [Ralf S. Engelschall]
12929 *) Move s_server -dcert and -dkey options out of the undocumented feature
12930 area because they are useful for the DSA situation and should be
12931 recognized by the users.
12932 [Ralf S. Engelschall]
12934 *) Fix the cipher decision scheme for export ciphers: the export bits are
12935 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
12936 SSL_EXP_MASK. So, the original variable has to be used instead of the
12937 already masked variable.
12938 [Richard Levitte <levitte@stacken.kth.se>]
12940 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
12941 [Richard Levitte <levitte@stacken.kth.se>]
12943 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
12944 from `int' to `unsigned int' because it's a length and initialized by
12945 EVP_DigestFinal() which expects an `unsigned int *'.
12946 [Richard Levitte <levitte@stacken.kth.se>]
12948 *) Don't hard-code path to Perl interpreter on shebang line of Configure
12949 script. Instead use the usual Shell->Perl transition trick.
12950 [Ralf S. Engelschall]
12952 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
12953 (in addition to RSA certificates) to match the behaviour of `openssl dsa
12954 -noout -modulus' as it's already the case for `openssl rsa -noout
12955 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
12956 currently the public key is printed (a decision which was already done by
12957 `openssl dsa -modulus' in the past) which serves a similar purpose.
12958 Additionally the NO_RSA no longer completely removes the whole -modulus
12959 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
12961 [Ralf S. Engelschall]
12963 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
12964 BIO. See the source (crypto/evp/bio_ok.c) for more info.
12965 [Arne Ansper <arne@ats.cyber.ee>]
12967 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
12968 to be added. Now both 'req' and 'ca' can use new objects defined in the
12972 *) Add cool BIO that does syslog (or event log on NT).
12973 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
12975 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
12976 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
12977 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
12978 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
12981 *) Add preliminary config info for new extension code.
12984 *) Make RSA_NO_PADDING really use no padding.
12985 [Ulf Moeller <ulf@fitug.de>]
12987 *) Generate errors when private/public key check is done.
12990 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
12991 for some CRL extensions and new objects added.
12994 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
12995 key usage extension and fuller support for authority key id.
12998 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
12999 padding method for RSA, which is recommended for new applications in PKCS
13000 #1 v2.0 (RFC 2437, October 1998).
13001 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
13002 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
13003 against Bleichbacher's attack on RSA.
13004 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
13007 *) Updates to the new SSL compression code
13008 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13010 *) Fix so that the version number in the master secret, when passed
13011 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
13012 (because the server will not accept higher), that the version number
13013 is 0x03,0x01, not 0x03,0x00
13014 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13016 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
13017 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
13018 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
13021 *) Support for RAW extensions where an arbitrary extension can be
13022 created by including its DER encoding. See apps/openssl.cnf for
13026 *) Make sure latest Perl versions don't interpret some generated C array
13027 code as Perl array code in the crypto/err/err_genc.pl script.
13028 [Lars Weber <3weber@informatik.uni-hamburg.de>]
13030 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
13031 not many people have the assembler. Various Win32 compilation fixes and
13032 update to the INSTALL.W32 file with (hopefully) more accurate Win32
13033 build instructions.
13036 *) Modify configure script 'Configure' to automatically create crypto/date.h
13037 file under Win32 and also build pem.h from pem.org. New script
13038 util/mkfiles.pl to create the MINFO file on environments that can't do a
13039 'make files': perl util/mkfiles.pl >MINFO should work.
13042 *) Major rework of DES function declarations, in the pursuit of correctness
13043 and purity. As a result, many evil casts evaporated, and some weirdness,
13044 too. You may find this causes warnings in your code. Zapping your evil
13045 casts will probably fix them. Mostly.
13048 *) Fix for a typo in asn1.h. Bug fix to object creation script
13049 obj_dat.pl. It considered a zero in an object definition to mean
13050 "end of object": none of the objects in objects.h have any zeros
13051 so it wasn't spotted.
13052 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
13054 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
13055 Masking (CBCM). In the absence of test vectors, the best I have been able
13056 to do is check that the decrypt undoes the encrypt, so far. Send me test
13057 vectors if you have them.
13060 *) Correct calculation of key length for export ciphers (too much space was
13061 allocated for null ciphers). This has not been tested!
13064 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
13065 message is now correct (it understands "crypto" and "ssl" on its
13066 command line). There is also now an "update" option. This will update
13067 the util/ssleay.num and util/libeay.num files with any new functions.
13069 perl util/mkdef.pl crypto ssl update
13070 it will update them.
13073 *) Overhauled the Perl interface (perl/*):
13074 - ported BN stuff to OpenSSL's different BN library
13075 - made the perl/ source tree CVS-aware
13076 - renamed the package from SSLeay to OpenSSL (the files still contain
13077 their history because I've copied them in the repository)
13078 - removed obsolete files (the test scripts will be replaced
13079 by better Test::Harness variants in the future)
13080 [Ralf S. Engelschall]
13082 *) First cut for a very conservative source tree cleanup:
13083 1. merge various obsolete readme texts into doc/ssleay.txt
13084 where we collect the old documents and readme texts.
13085 2. remove the first part of files where I'm already sure that we no
13086 longer need them because of three reasons: either they are just temporary
13087 files which were left by Eric or they are preserved original files where
13088 I've verified that the diff is also available in the CVS via "cvs diff
13089 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
13090 the crypto/md/ stuff).
13091 [Ralf S. Engelschall]
13093 *) More extension code. Incomplete support for subject and issuer alt
13094 name, issuer and authority key id. Change the i2v function parameters
13095 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
13096 what that's for :-) Fix to ASN1 macro which messed up
13097 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
13100 *) Preliminary support for ENUMERATED type. This is largely copied from the
13104 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
13105 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13107 *) Make sure `make rehash' target really finds the `openssl' program.
13108 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
13110 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
13111 like to hear about it if this slows down other processors.
13114 *) Add CygWin32 platform information to Configure script.
13115 [Alan Batie <batie@aahz.jf.intel.com>]
13117 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
13118 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
13120 *) New program nseq to manipulate netscape certificate sequences
13123 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
13127 *) Fixes to BN code. Previously the default was to define BN_RECURSION
13128 but the BN code had some problems that would cause failures when
13129 doing certificate verification and some other functions.
13130 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13132 *) Add ASN1 and PEM code to support netscape certificate sequences.
13135 *) Add ASN1 and PEM code to support netscape certificate sequences.
13138 *) Add several PKIX and private extended key usage OIDs.
13141 *) Modify the 'ca' program to handle the new extension code. Modify
13142 openssl.cnf for new extension format, add comments.
13145 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
13146 and add a sample to openssl.cnf so req -x509 now adds appropriate
13150 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
13151 error code, add initial support to X509_print() and x509 application.
13154 *) Takes a deep breath and start adding X509 V3 extension support code. Add
13155 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
13156 stuff is currently isolated and isn't even compiled yet.
13159 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
13160 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
13161 Removed the versions check from X509 routines when loading extensions:
13162 this allows certain broken certificates that don't set the version
13163 properly to be processed.
13166 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
13167 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
13168 can still be regenerated with "make depend".
13171 *) Spelling mistake in C version of CAST-128.
13172 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
13174 *) Changes to the error generation code. The perl script err-code.pl
13175 now reads in the old error codes and retains the old numbers, only
13176 adding new ones if necessary. It also only changes the .err files if new
13177 codes are added. The makefiles have been modified to only insert errors
13178 when needed (to avoid needlessly modifying header files). This is done
13179 by only inserting errors if the .err file is newer than the auto generated
13180 C file. To rebuild all the error codes from scratch (the old behaviour)
13181 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
13182 or delete all the .err files.
13185 *) CAST-128 was incorrectly implemented for short keys. The C version has
13186 been fixed, but is untested. The assembler versions are also fixed, but
13187 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
13188 to regenerate it if needed.
13189 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
13190 Hagino <itojun@kame.net>]
13192 *) File was opened incorrectly in randfile.c.
13193 [Ulf Möller <ulf@fitug.de>]
13195 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
13196 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
13197 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
13198 al: it's just almost always a UTCTime. Note this patch adds new error
13199 codes so do a "make errors" if there are problems.
13202 *) Correct Linux 1 recognition in config.
13203 [Ulf Möller <ulf@fitug.de>]
13205 *) Remove pointless MD5 hash when using DSA keys in ca.
13206 [Anonymous <nobody@replay.com>]
13208 *) Generate an error if given an empty string as a cert directory. Also
13209 generate an error if handed NULL (previously returned 0 to indicate an
13210 error, but didn't set one).
13211 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
13213 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
13216 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
13217 parameters. This was causing a warning which killed off the Win32 compile.
13220 *) Remove C++ style comments from crypto/bn/bn_local.h.
13221 [Neil Costigan <neil.costigan@celocom.com>]
13223 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
13224 based on a text string, looking up short and long names and finally
13225 "dot" format. The "dot" format stuff didn't work. Added new function
13226 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
13227 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
13228 OID is not part of the table.
13231 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
13232 X509_LOOKUP_by_alias().
13235 *) Sort openssl functions by name.
13238 *) Get the gendsa program working (hopefully) and add it to app list. Remove
13239 encryption from sample DSA keys (in case anyone is interested the password
13243 *) Make _all_ *_free functions accept a NULL pointer.
13244 [Frans Heymans <fheymans@isaserver.be>]
13246 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
13248 [Anonymous <nobody@replay.com>]
13250 *) s_server should send the CAfile as acceptable CAs, not its own cert.
13251 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13253 *) Don't blow it for numeric -newkey arguments to apps/req.
13254 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13256 *) Temp key "for export" tests were wrong in s3_srvr.c.
13257 [Anonymous <nobody@replay.com>]
13259 *) Add prototype for temp key callback functions
13260 SSL_CTX_set_tmp_{rsa,dh}_callback().
13263 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
13264 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
13267 *) X509_name_add_entry() freed the wrong thing after an error.
13268 [Arne Ansper <arne@ats.cyber.ee>]
13270 *) rsa_eay.c would attempt to free a NULL context.
13271 [Arne Ansper <arne@ats.cyber.ee>]
13273 *) BIO_s_socket() had a broken should_retry() on Windoze.
13274 [Arne Ansper <arne@ats.cyber.ee>]
13276 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
13277 [Arne Ansper <arne@ats.cyber.ee>]
13279 *) Make sure the already existing X509_STORE->depth variable is initialized
13280 in X509_STORE_new(), but document the fact that this variable is still
13281 unused in the certificate verification process.
13282 [Ralf S. Engelschall]
13284 *) Fix the various library and apps files to free up pkeys obtained from
13285 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
13288 *) Fix reference counting in X509_PUBKEY_get(). This makes
13289 demos/maurice/example2.c work, amongst others, probably.
13290 [Steve Henson and Ben Laurie]
13292 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
13293 `openssl' and second, the shortcut symlinks for the `openssl <command>'
13294 are no longer created. This way we have a single and consistent command
13295 line interface `openssl <command>', similar to `cvs <command>'.
13296 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
13298 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
13299 BIT STRING wrapper always have zero unused bits.
13302 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
13305 *) Make the top-level INSTALL documentation easier to understand.
13308 *) Makefiles updated to exit if an error occurs in a sub-directory
13309 make (including if user presses ^C) [Paul Sutton]
13311 *) Make Montgomery context stuff explicit in RSA data structure.
13314 *) Fix build order of pem and err to allow for generated pem.h.
13317 *) Fix renumbering bug in X509_NAME_delete_entry().
13320 *) Enhanced the err-ins.pl script so it makes the error library number
13321 global and can add a library name. This is needed for external ASN1 and
13322 other error libraries.
13325 *) Fixed sk_insert which never worked properly.
13328 *) Fix ASN1 macros so they can handle indefinite length constructed
13329 EXPLICIT tags. Some non standard certificates use these: they can now
13333 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
13334 into a single doc/ssleay.txt bundle. This way the information is still
13335 preserved but no longer messes up this directory. Now it's new room for
13336 the new set of documentation files.
13337 [Ralf S. Engelschall]
13339 *) SETs were incorrectly DER encoded. This was a major pain, because they
13340 shared code with SEQUENCEs, which aren't coded the same. This means that
13341 almost everything to do with SETs or SEQUENCEs has either changed name or
13342 number of arguments.
13343 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
13345 *) Fix test data to work with the above.
13348 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
13349 was already fixed by Eric for 0.9.1 it seems.
13350 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
13352 *) Autodetect FreeBSD3.
13355 *) Fix various bugs in Configure. This affects the following platforms:
13359 unixware-2.0-pentium
13363 *) Eliminate generated files from CVS. Reorder tests to regenerate files
13364 before they are needed.
13367 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
13371 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
13373 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
13374 changed SSLeay to OpenSSL in version strings.
13375 [Ralf S. Engelschall]
13377 *) Some fixups to the top-level documents.
13380 *) Fixed the nasty bug where rsaref.h was not found under compile-time
13381 because the symlink to include/ was missing.
13382 [Ralf S. Engelschall]
13384 *) Incorporated the popular no-RSA/DSA-only patches
13385 which allow to compile a RSA-free SSLeay.
13386 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
13388 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
13389 when "ssleay" is still not found.
13390 [Ralf S. Engelschall]
13392 *) Added more platforms to Configure: Cray T3E, HPUX 11,
13393 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
13395 *) Updated the README file.
13396 [Ralf S. Engelschall]
13398 *) Added various .cvsignore files in the CVS repository subdirs
13399 to make a "cvs update" really silent.
13400 [Ralf S. Engelschall]
13402 *) Recompiled the error-definition header files and added
13403 missing symbols to the Win32 linker tables.
13404 [Ralf S. Engelschall]
13406 *) Cleaned up the top-level documents;
13407 o new files: CHANGES and LICENSE
13408 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
13409 o merged COPYRIGHT into LICENSE
13410 o removed obsolete TODO file
13411 o renamed MICROSOFT to INSTALL.W32
13412 [Ralf S. Engelschall]
13414 *) Removed dummy files from the 0.9.1b source tree:
13415 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
13416 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
13417 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
13418 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
13419 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
13420 [Ralf S. Engelschall]
13422 *) Added various platform portability fixes.
13425 *) The Genesis of the OpenSSL rpject:
13426 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
13427 Young and Tim J. Hudson created while they were working for C2Net until
13429 [The OpenSSL Project]
13432 Changes between 0.9.0b and 0.9.1b [not released]
13434 *) Updated a few CA certificates under certs/
13437 *) Changed some BIGNUM api stuff.
13440 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
13441 DGUX x86, Linux Alpha, etc.
13444 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
13445 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
13449 *) Add -strparse option to asn1pars program which parses nested
13451 [Dr Stephen Henson <shenson@bigfoot.com>]
13453 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
13456 *) DSA fix for "ca" program.
13459 *) Added "-genkey" option to "dsaparam" program.
13462 *) Added RIPE MD160 (rmd160) message digest.
13465 *) Added -a (all) option to "ssleay version" command.
13468 *) Added PLATFORM define which is the id given to Configure.
13471 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
13474 *) Extended the ASN.1 parser routines.
13477 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
13480 *) Added a BN_CTX to the BN library.
13483 *) Fixed the weak key values in DES library
13486 *) Changed API in EVP library for cipher aliases.
13489 *) Added support for RC2/64bit cipher.
13492 *) Converted the lhash library to the crypto/mem.c functions.
13495 *) Added more recognized ASN.1 object ids.
13498 *) Added more RSA padding checks for SSL/TLS.
13501 *) Added BIO proxy/filter functionality.
13504 *) Added extra_certs to SSL_CTX which can be used
13505 send extra CA certificates to the client in the CA cert chain sending
13506 process. It can be configured with SSL_CTX_add_extra_chain_cert().
13509 *) Now Fortezza is denied in the authentication phase because
13510 this is key exchange mechanism is not supported by SSLeay at all.
13513 *) Additional PKCS1 checks.
13516 *) Support the string "TLSv1" for all TLS v1 ciphers.
13519 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
13520 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
13523 *) Fixed a few memory leaks.
13526 *) Fixed various code and comment typos.
13529 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
13530 bytes sent in the client random.
13531 [Edward Bishop <ebishop@spyglass.com>]
projects / openssl.git / blob