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 *) Removed include/openssl/opensslconf.h.in and replaced it with
13 include/openssl/configuration.h.in, which differs in not including
14 <openssl/macros.h>. A short header include/openssl/opensslconf.h
15 was added to include both.
17 This allows internal hacks where one might need to modify the set
18 of configured macros, for example this if deprecated symbols are
19 still supposed to be available internally:
21 #include <openssl/configuration.h>
23 #undef OPENSSL_NO_DEPRECATED
24 #define OPENSSL_SUPPRESS_DEPRECATED
26 #include <openssl/macros.h>
28 This should not be used by applications that use the exported
29 symbols, as that will lead to linking errors.
32 *) Fixed an an overflow bug in the x64_64 Montgomery squaring procedure
33 used in exponentiation with 512-bit moduli. No EC algorithms are
34 affected. Analysis suggests that attacks against 2-prime RSA1024,
35 3-prime RSA1536, and DSA1024 as a result of this defect would be very
36 difficult to perform and are not believed likely. Attacks against DH512
37 are considered just feasible. However, for an attack the target would
38 have to re-use the DH512 private key, which is not recommended anyway.
39 Also applications directly using the low level API BN_mod_exp may be
40 affected if they use BN_FLG_CONSTTIME.
44 *) Most memory-debug features have been deprecated, and the functionality
48 *) Introduced a new method type and API, OSSL_SERIALIZER, to
49 represent generic serializers. An implementation is expected to
50 be able to serialize an object associated with a given name (such
51 as an algorithm name for an asymmetric key) into forms given by
52 implementation properties.
54 Serializers are primarily used from inside libcrypto, through
55 calls to functions like EVP_PKEY_print_private(),
56 PEM_write_bio_PrivateKey() and similar.
58 Serializers are specified in such a way that they can be made to
59 directly handle the provider side portion of an object, if this
60 provider side part comes from the same provider as the serializer
61 itself, but can also be made to handle objects in parametrized
62 form (as an OSSL_PARAM array of data). This allows a provider to
63 offer generic serializers as a service for any other provider.
66 *) Added a .pragma directive to the syntax of configuration files, to
67 allow varying behavior in a supported and predictable manner.
68 Currently added pragma:
72 This allows dollar signs to be a keyword character unless it's
73 followed by a opening brace or parenthesis. This is useful for
74 platforms where dollar signs are commonly used in names, such as
75 volume names and system directory names on VMS.
78 *) Added functionality to create an EVP_PKEY from user data. This
79 is effectively the same as creating a RSA, DH or DSA object and
80 then assigning them to an EVP_PKEY, but directly using algorithm
81 agnostic EVP functions. A benefit is that this should be future
82 proof for public key algorithms to come.
85 *) Change the interpretation of the '--api' configuration option to
86 mean that this is a desired API compatibility level with no
87 further meaning. The previous interpretation, that this would
88 also mean to remove all deprecated symbols up to and including
89 the given version, no requires that 'no-deprecated' is also used
92 When building applications, the desired API compatibility level
93 can be set with the OPENSSL_API_COMPAT macro like before. For
94 API compatibility version below 3.0, the old style numerical
95 value is valid as before, such as -DOPENSSL_API_COMPAT=0x10100000L.
96 For version 3.0 and on, the value is expected to be the decimal
97 value calculated from the major and minor version like this:
99 MAJOR * 10000 + MINOR * 100
103 -DOPENSSL_API_COMPAT=30000 For 3.0
104 -DOPENSSL_API_COMPAT=30200 For 3.2
106 To hide declarations that are deprecated up to and including the
107 given API compatibility level, -DOPENSSL_NO_DEPRECATED must be
108 given when building the application as well.
111 *) Added the X509_LOOKUP_METHOD called X509_LOOKUP_store, to allow
112 access to certificate and CRL stores via URIs and OSSL_STORE
115 This adds the following functions:
118 X509_STORE_load_file()
119 X509_STORE_load_path()
120 X509_STORE_load_store()
121 SSL_add_store_cert_subjects_to_stack()
122 SSL_CTX_set_default_verify_store()
123 SSL_CTX_load_verify_file()
124 SSL_CTX_load_verify_dir()
125 SSL_CTX_load_verify_store()
127 Also, the following functions are now deprecated:
129 - X509_STORE_load_locations() (use X509_STORE_load_file(),
130 X509_STORE_load_path() or X509_STORE_load_store() instead)
131 - SSL_CTX_load_verify_locations() (use SSL_CTX_load_verify_file(),
132 SSL_CTX_load_verify_dir() or SSL_CTX_load_verify_store() instead)
135 *) Added a new method to gather entropy on VMS, based on SYS$GET_ENTROPY.
136 The presence of this system service is determined at run-time.
139 *) Added functionality to create an EVP_PKEY context based on data
140 for methods from providers. This takes an algorithm name and a
141 property query string and simply stores them, with the intent
142 that any operation that uses this context will use those strings
143 to fetch the needed methods implicitly, thereby making the port
144 of application written for pre-3.0 OpenSSL easier.
147 *) The undocumented function NCONF_WIN32() has been deprecated; for
148 conversion details see the HISTORY section of doc/man5/config.pod
151 *) Introduced the new functions EVP_DigestSignInit_ex() and
152 EVP_DigestVerifyInit_ex(). The macros EVP_DigestSignUpdate() and
153 EVP_DigestVerifyUpdate() have been converted to functions. See the man
154 pages for further details.
157 *) Over two thousand fixes were made to the documentation, including:
158 adding missing command flags, better style conformance, documentation
160 [Rich Salz, Richard Levitte]
162 *) s390x assembly pack: add hardware-support for P-256, P-384, P-521,
163 X25519, X448, Ed25519 and Ed448.
166 *) Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just
170 *) Deprecated the public definition of ERR_STATE as well as the function
171 ERR_get_state(). This is done in preparation of making ERR_STATE an
175 *) Added ERR functionality to give callers access to the stored function
176 names that have replaced the older function code based functions.
178 New functions are ERR_get_error_func(), ERR_peek_error_func(),
179 ERR_peek_last_error_func(), ERR_get_error_data(), ERR_peek_error_data(),
180 ERR_peek_last_error_data(), ERR_get_error_all(), ERR_peek_error_all()
181 and ERR_peek_last_error_all().
183 These functions have become deprecated: ERR_get_error_line_data(),
184 ERR_peek_error_line_data(), ERR_peek_last_error_line_data() and
185 ERR_func_error_string().
188 *) Extended testing to be verbose for failing tests only. The make variables
189 VERBOSE_FAILURE or VF can be used to enable this:
191 $ make VF=1 test # Unix
192 $ mms /macro=(VF=1) test ! OpenVMS
193 $ nmake VF=1 test # Windows
197 *) For built-in EC curves, ensure an EC_GROUP built from the curve name is
198 used even when parsing explicit parameters, when loading a serialized key
199 or calling `EC_GROUP_new_from_ecpkparameters()`/
200 `EC_GROUP_new_from_ecparameters()`.
201 This prevents bypass of security hardening and performance gains,
202 especially for curves with specialized EC_METHODs.
203 By default, if a key encoded with explicit parameters is loaded and later
204 serialized, the output is still encoded with explicit parameters, even if
205 internally a "named" EC_GROUP is used for computation.
208 *) Compute ECC cofactors if not provided during EC_GROUP construction. Before
209 this change, EC_GROUP_set_generator would accept order and/or cofactor as
210 NULL. After this change, only the cofactor parameter can be NULL. It also
211 does some minimal sanity checks on the passed order.
215 *) Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
216 An attack is simple, if the first CMS_recipientInfo is valid but the
217 second CMS_recipientInfo is chosen ciphertext. If the second
218 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
219 encryption key will be replaced by garbage, and the message cannot be
220 decoded, but if the RSA decryption fails, the correct encryption key is
221 used and the recipient will not notice the attack.
222 As a work around for this potential attack the length of the decrypted
223 key must be equal to the cipher default key length, in case the
224 certifiate is not given and all recipientInfo are tried out.
225 The old behaviour can be re-enabled in the CMS code by setting the
226 CMS_DEBUG_DECRYPT flag.
229 *) Early start up entropy quality from the DEVRANDOM seed source has been
230 improved for older Linux systems. The RAND subsystem will wait for
231 /dev/random to be producing output before seeding from /dev/urandom.
232 The seeded state is stored for future library initialisations using
233 a system global shared memory segment. The shared memory identifier
234 can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to
235 the desired value. The default identifier is 114.
238 *) Revised BN_generate_prime_ex to not avoid factors 2..17863 in p-1
239 when primes for RSA keys are computed.
240 Since we previously always generated primes == 2 (mod 3) for RSA keys,
241 the 2-prime and 3-prime RSA modules were easy to distinguish, since
242 N = p*q = 1 (mod 3), but N = p*q*r = 2 (mod 3). Therefore fingerprinting
243 2-prime vs. 3-prime RSA keys was possible by computing N mod 3.
244 This avoids possible fingerprinting of newly generated RSA modules.
247 *) Correct the extended master secret constant on EBCDIC systems. Without this
248 fix TLS connections between an EBCDIC system and a non-EBCDIC system that
249 negotiate EMS will fail. Unfortunately this also means that TLS connections
250 between EBCDIC systems with this fix, and EBCDIC systems without this
251 fix will fail if they negotiate EMS.
254 *) Changed the library initialisation so that the config file is now loaded
255 by default. This was already the case for libssl. It now occurs for both
256 libcrypto and libssl. Use the OPENSSL_INIT_NO_LOAD_CONFIG option to
257 OPENSSL_init_crypto() to suppress automatic loading of a config file.
260 *) Introduced new error raising macros, ERR_raise() and ERR_raise_data(),
261 where the former acts as a replacement for ERR_put_error(), and the
262 latter replaces the combination ERR_put_error()+ERR_add_error_data().
263 ERR_raise_data() adds more flexibility by taking a format string and
264 an arbitrary number of arguments following it, to be processed with
268 *) Introduced a new function, OSSL_PROVIDER_available(), which can be used
269 to check if a named provider is loaded and available. When called, it
270 will also activate all fallback providers if such are still present.
273 *) Enforce a minimum DH modulus size of 512 bits.
276 *) Changed DH parameters to generate the order q subgroup instead of 2q.
277 Previously generated DH parameters are still accepted by DH_check
278 but DH_generate_key works around that by clearing bit 0 of the
279 private key for those. This avoids leaking bit 0 of the private key.
282 *) Significantly reduce secure memory usage by the randomness pools.
285 *) {CRYPTO,OPENSSL}_mem_debug_{push,pop} are now no-ops and have been
289 *) A new type, EVP_KEYEXCH, has been introduced to represent key exchange
290 algorithms. An implementation of a key exchange algorithm can be obtained
291 by using the function EVP_KEYEXCH_fetch(). An EVP_KEYEXCH algorithm can be
292 used in a call to EVP_PKEY_derive_init_ex() which works in a similar way to
293 the older EVP_PKEY_derive_init() function. See the man pages for the new
294 functions for further details.
297 *) The EVP_PKEY_CTX_set_dh_pad() macro has now been converted to a function.
300 *) Removed the function names from error messages and deprecated the
303 *) Removed NextStep support and the macro OPENSSL_UNISTD
306 *) Removed DES_check_key. Also removed OPENSSL_IMPLEMENT_GLOBAL,
307 OPENSSL_GLOBAL_REF, OPENSSL_DECLARE_GLOBAL.
308 Also removed "export var as function" capability; we do not export
309 variables, only functions.
312 *) RC5_32_set_key has been changed to return an int type, with 0 indicating
313 an error and 1 indicating success. In previous versions of OpenSSL this
314 was a void type. If a key was set longer than the maximum possible this
318 *) Support SM2 signing and verification schemes with X509 certificate.
321 *) Use SHA256 as the default digest for TS query in the ts app.
324 *) Change PBKDF2 to conform to SP800-132 instead of the older PKCS5 RFC2898.
325 This checks that the salt length is at least 128 bits, the derived key
326 length is at least 112 bits, and that the iteration count is at least 1000.
327 For backwards compatibility these checks are disabled by default in the
328 default provider, but are enabled by default in the fips provider.
329 To enable or disable these checks use the control
330 EVP_KDF_CTRL_SET_PBKDF2_PKCS5_MODE.
333 *) Default cipher lists/suites are now available via a function, the
334 #defines are deprecated.
337 *) Add target VC-WIN32-UWP, VC-WIN64A-UWP, VC-WIN32-ARM-UWP and
338 VC-WIN64-ARM-UWP in Windows OneCore target for making building libraries
339 for Windows Store apps easier. Also, the "no-uplink" option has been added.
342 *) Join the directories crypto/x509 and crypto/x509v3
345 *) Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
346 This changes the size when using the genpkey app when no size is given. It
347 fixes an omission in earlier changes that changed all RSA, DSA and DH
348 generation apps to use 2048 bits by default.
351 *) Added command 'openssl kdf' that uses the EVP_KDF API.
354 *) Added command 'openssl mac' that uses the EVP_MAC API.
357 *) Added OPENSSL_info() to get diverse built-in OpenSSL data, such
358 as default directories. Also added the command 'openssl info'
359 for scripting purposes.
362 *) The functions AES_ige_encrypt() and AES_bi_ige_encrypt() have been
363 deprecated. These undocumented functions were never integrated into the EVP
364 layer and implement the AES Infinite Garble Extension (IGE) mode and AES
365 Bi-directional IGE mode. These modes were never formally standardised and
366 usage of these functions is believed to be very small. In particular
367 AES_bi_ige_encrypt() has a known bug. It accepts 2 AES keys, but only one
368 is ever used. The security implications are believed to be minimal, but
369 this issue was never fixed for backwards compatibility reasons. New code
370 should not use these modes.
373 *) Add prediction resistance to the DRBG reseeding process.
376 *) Limit the number of blocks in a data unit for AES-XTS to 2^20 as
377 mandated by IEEE Std 1619-2018.
380 *) Added newline escaping functionality to a filename when using openssl dgst.
381 This output format is to replicate the output format found in the '*sum'
382 checksum programs. This aims to preserve backward compatibility.
383 [Matt Eaton, Richard Levitte, and Paul Dale]
385 *) Removed the heartbeat message in DTLS feature, as it has very
386 little usage and doesn't seem to fulfill a valuable purpose.
387 The configuration option is now deprecated.
390 *) Changed the output of 'openssl {digestname} < file' to display the
391 digest name in its output.
394 *) Added a new generic trace API which provides support for enabling
395 instrumentation through trace output. This feature is mainly intended
396 as an aid for developers and is disabled by default. To utilize it,
397 OpenSSL needs to be configured with the `enable-trace` option.
399 If the tracing API is enabled, the application can activate trace output
400 by registering BIOs as trace channels for a number of tracing and debugging
403 The 'openssl' application has been expanded to enable any of the types
404 available via environment variables defined by the user, and serves as
405 one possible example on how to use this functionality.
406 [Richard Levitte & Matthias St. Pierre]
408 *) Added build tests for C++. These are generated files that only do one
409 thing, to include one public OpenSSL head file each. This tests that
410 the public header files can be usefully included in a C++ application.
412 This test isn't enabled by default. It can be enabled with the option
413 'enable-buildtest-c++'.
416 *) Add Single Step KDF (EVP_KDF_SS) to EVP_KDF.
419 *) Add KMAC to EVP_MAC.
422 *) Added property based algorithm implementation selection framework to
426 *) Added SCA hardening for modular field inversion in EC_GROUP through
427 a new dedicated field_inv() pointer in EC_METHOD.
428 This also addresses a leakage affecting conversions from projective
429 to affine coordinates.
430 [Billy Bob Brumley, Nicola Tuveri]
432 *) Added EVP_KDF, an EVP layer KDF API, to simplify adding KDF and PRF
433 implementations. This includes an EVP_PKEY to EVP_KDF bridge for
434 those algorithms that were already supported through the EVP_PKEY API
435 (scrypt, TLS1 PRF and HKDF). The low-level KDF functions for PBKDF2
436 and scrypt are now wrappers that call EVP_KDF.
439 *) Build devcrypto engine as a dynamic engine.
442 *) Add keyed BLAKE2 to EVP_MAC.
445 *) Fix a bug in the computation of the endpoint-pair shared secret used
446 by DTLS over SCTP. This breaks interoperability with older versions
447 of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime
448 switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling
449 interoperability with such broken implementations. However, enabling
450 this switch breaks interoperability with correct implementations.
452 *) Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
453 re-used X509_PUBKEY object if the second PUBKEY is malformed.
456 *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
459 *) Change the license to the Apache License v2.0.
462 *) Switch to a new version scheme using three numbers MAJOR.MINOR.PATCH.
464 o Major releases (indicated by incrementing the MAJOR release number)
465 may introduce incompatible API/ABI changes.
466 o Minor releases (indicated by incrementing the MINOR release number)
467 may introduce new features but retain API/ABI compatibility.
468 o Patch releases (indicated by incrementing the PATCH number)
469 are intended for bug fixes and other improvements of existing
470 features only (like improving performance or adding documentation)
471 and retain API/ABI compatibility.
474 *) Add support for RFC5297 SIV mode (siv128), including AES-SIV.
477 *) Remove the 'dist' target and add a tarball building script. The
478 'dist' target has fallen out of use, and it shouldn't be
479 necessary to configure just to create a source distribution.
482 *) Recreate the OS390-Unix config target. It no longer relies on a
483 special script like it did for OpenSSL pre-1.1.0.
486 *) Instead of having the source directories listed in Configure, add
487 a 'build.info' keyword SUBDIRS to indicate what sub-directories to
491 *) Add GMAC to EVP_MAC.
494 *) Ported the HMAC, CMAC and SipHash EVP_PKEY_METHODs to EVP_MAC.
497 *) Added EVP_MAC, an EVP layer MAC API, to simplify adding MAC
498 implementations. This includes a generic EVP_PKEY to EVP_MAC bridge,
499 to facilitate the continued use of MACs through raw private keys in
500 functionality such as EVP_DigestSign* and EVP_DigestVerify*.
503 *) Deprecate ECDH_KDF_X9_62() and mark its replacement as internal. Users
504 should use the EVP interface instead (EVP_PKEY_CTX_set_ecdh_kdf_type).
507 *) Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for
508 the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names
509 are retained for backwards compatibility.
512 *) AES-XTS mode now enforces that its two keys are different to mitigate
513 the attacked described in "Efficient Instantiations of Tweakable
514 Blockciphers and Refinements to Modes OCB and PMAC" by Phillip Rogaway.
515 Details of this attack can be obtained from:
516 http://web.cs.ucdavis.edu/%7Erogaway/papers/offsets.pdf
519 *) Rename the object files, i.e. give them other names than in previous
520 versions. Their names now include the name of the final product, as
521 well as its type mnemonic (bin, lib, shlib).
524 *) Added new option for 'openssl list', '-objects', which will display the
525 list of built in objects, i.e. OIDs with names.
528 *) Added support for Linux Kernel TLS data-path. The Linux Kernel data-path
529 improves application performance by removing data copies and providing
530 applications with zero-copy system calls such as sendfile and splice.
533 Changes between 1.1.1a and 1.1.1b [xx XXX xxxx]
535 *) Change the info callback signals for the start and end of a post-handshake
536 message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START
537 and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get
538 confused by this and assume that a TLSv1.2 renegotiation has started. This
539 can break KeyUpdate handling. Instead we no longer signal the start and end
540 of a post handshake message exchange (although the messages themselves are
541 still signalled). This could break some applications that were expecting
542 the old signals. However without this KeyUpdate is not usable for many
546 Changes between 1.1.1 and 1.1.1a [20 Nov 2018]
548 *) Timing vulnerability in DSA signature generation
550 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
551 timing side channel attack. An attacker could use variations in the signing
552 algorithm to recover the private key.
554 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
558 *) Timing vulnerability in ECDSA signature generation
560 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
561 timing side channel attack. An attacker could use variations in the signing
562 algorithm to recover the private key.
564 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
568 *) Fixed the issue that RAND_add()/RAND_seed() silently discards random input
569 if its length exceeds 4096 bytes. The limit has been raised to a buffer size
570 of two gigabytes and the error handling improved.
572 This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been
573 categorized as a normal bug, not a security issue, because the DRBG reseeds
574 automatically and is fully functional even without additional randomness
575 provided by the application.
577 Changes between 1.1.0i and 1.1.1 [11 Sep 2018]
579 *) Add a new ClientHello callback. Provides a callback interface that gives
580 the application the ability to adjust the nascent SSL object at the
581 earliest stage of ClientHello processing, immediately after extensions have
582 been collected but before they have been processed. In particular, this
583 callback can adjust the supported TLS versions in response to the contents
587 *) Add SM2 base algorithm support.
590 *) s390x assembly pack: add (improved) hardware-support for the following
591 cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb,
592 aes-cfb/cfb8, aes-ecb.
595 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
596 parameter is no longer accepted, as it leads to a corrupt table. NULL
597 pem_str is reserved for alias entries only.
600 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
601 step for prime curves. The new implementation is based on formulae from
602 differential addition-and-doubling in homogeneous projective coordinates
603 from Izu-Takagi "A fast parallel elliptic curve multiplication resistant
604 against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves
605 and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified
606 to work in projective coordinates.
607 [Billy Bob Brumley, Nicola Tuveri]
609 *) Change generating and checking of primes so that the error rate of not
610 being prime depends on the intended use based on the size of the input.
611 For larger primes this will result in more rounds of Miller-Rabin.
612 The maximal error rate for primes with more than 1080 bits is lowered
614 [Kurt Roeckx, Annie Yousar]
616 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
619 *) The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
620 moving between systems, and to avoid confusion when a Windows build is
621 done with mingw vs with MSVC. For POSIX installs, there's still a
622 symlink or copy named 'tsget' to avoid that confusion as well.
625 *) Revert blinding in ECDSA sign and instead make problematic addition
626 length-invariant. Switch even to fixed-length Montgomery multiplication.
629 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
630 step for binary curves. The new implementation is based on formulae from
631 differential addition-and-doubling in mixed Lopez-Dahab projective
632 coordinates, modified to independently blind the operands.
633 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
635 *) Add a scaffold to optionally enhance the Montgomery ladder implementation
636 for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing
637 EC_METHODs to implement their own specialized "ladder step", to take
638 advantage of more favorable coordinate systems or more efficient
639 differential addition-and-doubling algorithms.
640 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
642 *) Modified the random device based seed sources to keep the relevant
643 file descriptors open rather than reopening them on each access.
644 This allows such sources to operate in a chroot() jail without
645 the associated device nodes being available. This behaviour can be
646 controlled using RAND_keep_random_devices_open().
649 *) Numerous side-channel attack mitigations have been applied. This may have
650 performance impacts for some algorithms for the benefit of improved
651 security. Specific changes are noted in this change log by their respective
655 *) AIX shared library support overhaul. Switch to AIX "natural" way of
656 handling shared libraries, which means collecting shared objects of
657 different versions and bitnesses in one common archive. This allows to
658 mitigate conflict between 1.0 and 1.1 side-by-side installations. It
659 doesn't affect the way 3rd party applications are linked, only how
660 multi-version installation is managed.
663 *) Make ec_group_do_inverse_ord() more robust and available to other
664 EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
665 mitigations are applied to the fallback BN_mod_inverse().
666 When using this function rather than BN_mod_inverse() directly, new
667 EC cryptosystem implementations are then safer-by-default.
670 *) Add coordinate blinding for EC_POINT and implement projective
671 coordinate blinding for generic prime curves as a countermeasure to
672 chosen point SCA attacks.
673 [Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley]
675 *) Add blinding to ECDSA and DSA signatures to protect against side channel
676 attacks discovered by Keegan Ryan (NCC Group).
679 *) Enforce checking in the pkeyutl command line app to ensure that the input
680 length does not exceed the maximum supported digest length when performing
681 a sign, verify or verifyrecover operation.
684 *) SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
685 I/O in combination with something like select() or poll() will hang. This
686 can be turned off again using SSL_CTX_clear_mode().
687 Many applications do not properly handle non-application data records, and
688 TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
689 around the problems in those applications, but can also break some.
690 It's recommended to read the manpages about SSL_read(), SSL_write(),
691 SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
692 SSL_CTX_set_read_ahead() again.
695 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
696 now allow empty (zero character) pass phrases.
699 *) Apply blinding to binary field modular inversion and remove patent
700 pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
703 *) Deprecate ec2_mult.c and unify scalar multiplication code paths for
704 binary and prime elliptic curves.
707 *) Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
708 constant time fixed point multiplication.
711 *) Revise elliptic curve scalar multiplication with timing attack
712 defenses: ec_wNAF_mul redirects to a constant time implementation
713 when computing fixed point and variable point multiplication (which
714 in OpenSSL are mostly used with secret scalars in keygen, sign,
715 ECDH derive operations).
716 [Billy Bob Brumley, Nicola Tuveri, Cesar Pereida García,
719 *) Updated CONTRIBUTING
722 *) Updated DRBG / RAND to request nonce and additional low entropy
723 randomness from the system.
724 [Matthias St. Pierre]
726 *) Updated 'openssl rehash' to use OpenSSL consistent default.
729 *) Moved the load of the ssl_conf module to libcrypto, which helps
730 loading engines that libssl uses before libssl is initialised.
733 *) Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
736 *) Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
737 [Ingo Schwarze, Rich Salz]
739 *) Added output of accepting IP address and port for 'openssl s_server'
742 *) Added a new API for TLSv1.3 ciphersuites:
743 SSL_CTX_set_ciphersuites()
744 SSL_set_ciphersuites()
747 *) Memory allocation failures consistently add an error to the error
751 *) Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
752 in libcrypto when run as setuid/setgid.
755 *) Load any config file by default when libssl is used.
758 *) Added new public header file <openssl/rand_drbg.h> and documentation
759 for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
760 [Matthias St. Pierre]
762 *) QNX support removed (cannot find contributors to get their approval
763 for the license change).
766 *) TLSv1.3 replay protection for early data has been implemented. See the
767 SSL_read_early_data() man page for further details.
770 *) Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
771 configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
772 below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
773 In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
774 would otherwise inadvertently disable all TLSv1.3 ciphersuites the
775 configuration has been separated out. See the ciphers man page or the
776 SSL_CTX_set_ciphersuites() man page for more information.
779 *) On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
780 in responder mode now supports the new "-multi" option, which
781 spawns the specified number of child processes to handle OCSP
782 requests. The "-timeout" option now also limits the OCSP
783 responder's patience to wait to receive the full client request
784 on a newly accepted connection. Child processes are respawned
785 as needed, and the CA index file is automatically reloaded
786 when changed. This makes it possible to run the "ocsp" responder
787 as a long-running service, making the OpenSSL CA somewhat more
788 feature-complete. In this mode, most diagnostic messages logged
789 after entering the event loop are logged via syslog(3) rather than
793 *) Added support for X448 and Ed448. Heavily based on original work by
797 *) Extend OSSL_STORE with capabilities to search and to narrow the set of
798 objects loaded. This adds the functions OSSL_STORE_expect() and
799 OSSL_STORE_find() as well as needed tools to construct searches and
800 get the search data out of them.
803 *) Support for TLSv1.3 added. Note that users upgrading from an earlier
804 version of OpenSSL should review their configuration settings to ensure
805 that they are still appropriate for TLSv1.3. For further information see:
806 https://wiki.openssl.org/index.php/TLS1.3
809 *) Grand redesign of the OpenSSL random generator
811 The default RAND method now utilizes an AES-CTR DRBG according to
812 NIST standard SP 800-90Ar1. The new random generator is essentially
813 a port of the default random generator from the OpenSSL FIPS 2.0
814 object module. It is a hybrid deterministic random bit generator
815 using an AES-CTR bit stream and which seeds and reseeds itself
816 automatically using trusted system entropy sources.
818 Some of its new features are:
819 o Support for multiple DRBG instances with seed chaining.
820 o The default RAND method makes use of a DRBG.
821 o There is a public and private DRBG instance.
822 o The DRBG instances are fork-safe.
823 o Keep all global DRBG instances on the secure heap if it is enabled.
824 o The public and private DRBG instance are per thread for lock free
826 [Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre]
828 *) Changed Configure so it only says what it does and doesn't dump
829 so much data. Instead, ./configdata.pm should be used as a script
830 to display all sorts of configuration data.
833 *) Added processing of "make variables" to Configure.
836 *) Added SHA512/224 and SHA512/256 algorithm support.
839 *) The last traces of Netware support, first removed in 1.1.0, have
843 *) Get rid of Makefile.shared, and in the process, make the processing
844 of certain files (rc.obj, or the .def/.map/.opt files produced from
845 the ordinal files) more visible and hopefully easier to trace and
846 debug (or make silent).
849 *) Make it possible to have environment variable assignments as
850 arguments to config / Configure.
853 *) Add multi-prime RSA (RFC 8017) support.
856 *) Add SM3 implemented according to GB/T 32905-2016
857 [ Jack Lloyd <jack.lloyd@ribose.com>,
858 Ronald Tse <ronald.tse@ribose.com>,
859 Erick Borsboom <erick.borsboom@ribose.com> ]
861 *) Add 'Maximum Fragment Length' TLS extension negotiation and support
862 as documented in RFC6066.
863 Based on a patch from Tomasz Moń
864 [Filipe Raimundo da Silva]
866 *) Add SM4 implemented according to GB/T 32907-2016.
867 [ Jack Lloyd <jack.lloyd@ribose.com>,
868 Ronald Tse <ronald.tse@ribose.com>,
869 Erick Borsboom <erick.borsboom@ribose.com> ]
871 *) Reimplement -newreq-nodes and ERR_error_string_n; the
872 original author does not agree with the license change.
875 *) Add ARIA AEAD TLS support.
878 *) Some macro definitions to support VS6 have been removed. Visual
879 Studio 6 has not worked since 1.1.0
882 *) Add ERR_clear_last_mark(), to allow callers to clear the last mark
883 without clearing the errors.
886 *) Add "atfork" functions. If building on a system that without
887 pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application
888 requirements. The RAND facility now uses/requires this.
894 *) The UI API becomes a permanent and integral part of libcrypto, i.e.
895 not possible to disable entirely. However, it's still possible to
896 disable the console reading UI method, UI_OpenSSL() (use UI_null()
899 To disable, configure with 'no-ui-console'. 'no-ui' is still
900 possible to use as an alias. Check at compile time with the
901 macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still
902 possible to check and is an alias for OPENSSL_NO_UI_CONSOLE.
905 *) Add a STORE module, which implements a uniform and URI based reader of
906 stores that can contain keys, certificates, CRLs and numerous other
907 objects. The main API is loosely based on a few stdio functions,
908 and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof,
909 OSSL_STORE_error and OSSL_STORE_close.
910 The implementation uses backends called "loaders" to implement arbitrary
911 URI schemes. There is one built in "loader" for the 'file' scheme.
914 *) Add devcrypto engine. This has been implemented against cryptodev-linux,
915 then adjusted to work on FreeBSD 8.4 as well.
916 Enable by configuring with 'enable-devcryptoeng'. This is done by default
917 on BSD implementations, as cryptodev.h is assumed to exist on all of them.
920 *) Module names can prefixed with OSSL_ or OPENSSL_. This affects
921 util/mkerr.pl, which is adapted to allow those prefixes, leading to
922 error code calls like this:
924 OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER);
926 With this change, we claim the namespaces OSSL and OPENSSL in a manner
927 that can be encoded in C. For the foreseeable future, this will only
929 [Richard Levitte and Tim Hudson]
931 *) Removed BSD cryptodev engine.
934 *) Add a build target 'build_all_generated', to build all generated files
935 and only that. This can be used to prepare everything that requires
936 things like perl for a system that lacks perl and then move everything
937 to that system and do the rest of the build there.
940 *) In the UI interface, make it possible to duplicate the user data. This
941 can be used by engines that need to retain the data for a longer time
942 than just the call where this user data is passed.
945 *) Ignore the '-named_curve auto' value for compatibility of applications
947 [Tomas Mraz <tmraz@fedoraproject.org>]
949 *) Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2
950 bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such
951 alerts across multiple records (some of which could be empty). In practice
952 it make no sense to send an empty alert record, or to fragment one. TLSv1.3
953 prohibts this altogether and other libraries (BoringSSL, NSS) do not
954 support this at all. Supporting it adds significant complexity to the
955 record layer, and its removal is unlikely to cause inter-operability
959 *) Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed
960 with Z. These are meant to replace LONG and ZLONG and to be size safe.
961 The use of LONG and ZLONG is discouraged and scheduled for deprecation
965 *) Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string,
966 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t.
967 [Richard Levitte, Andy Polyakov]
969 *) Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine()
973 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
974 platform rather than 'mingw'.
977 *) The functions X509_STORE_add_cert and X509_STORE_add_crl return
978 success if they are asked to add an object which already exists
979 in the store. This change cascades to other functions which load
980 certificates and CRLs.
983 *) x86_64 assembly pack: annotate code with DWARF CFI directives to
984 facilitate stack unwinding even from assembly subroutines.
987 *) Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN.
988 Also remove OPENSSL_GLOBAL entirely, as it became a no-op.
991 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
992 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
993 which is the minimum version we support.
996 *) Certificate time validation (X509_cmp_time) enforces stricter
997 compliance with RFC 5280. Fractional seconds and timezone offsets
998 are no longer allowed.
1001 *) Add support for ARIA
1004 *) s_client will now send the Server Name Indication (SNI) extension by
1005 default unless the new "-noservername" option is used. The server name is
1006 based on the host provided to the "-connect" option unless overridden by
1007 using "-servername".
1010 *) Add support for SipHash
1013 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0
1014 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
1015 prevent issues where no progress is being made and the peer continually
1016 sends unrecognised record types, using up resources processing them.
1019 *) 'openssl passwd' can now produce SHA256 and SHA512 based output,
1020 using the algorithm defined in
1021 https://www.akkadia.org/drepper/SHA-crypt.txt
1024 *) Heartbeat support has been removed; the ABI is changed for now.
1025 [Richard Levitte, Rich Salz]
1027 *) Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
1030 *) The RSA "null" method, which was partially supported to avoid patent
1031 issues, has been replaced to always returns NULL.
1035 Changes between 1.1.0h and 1.1.0i [xx XXX xxxx]
1037 *) Client DoS due to large DH parameter
1039 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
1040 malicious server can send a very large prime value to the client. This will
1041 cause the client to spend an unreasonably long period of time generating a
1042 key for this prime resulting in a hang until the client has finished. This
1043 could be exploited in a Denial Of Service attack.
1045 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
1049 *) Cache timing vulnerability in RSA Key Generation
1051 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
1052 a cache timing side channel attack. An attacker with sufficient access to
1053 mount cache timing attacks during the RSA key generation process could
1054 recover the private key.
1056 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
1057 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
1061 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
1062 parameter is no longer accepted, as it leads to a corrupt table. NULL
1063 pem_str is reserved for alias entries only.
1066 *) Revert blinding in ECDSA sign and instead make problematic addition
1067 length-invariant. Switch even to fixed-length Montgomery multiplication.
1070 *) Change generating and checking of primes so that the error rate of not
1071 being prime depends on the intended use based on the size of the input.
1072 For larger primes this will result in more rounds of Miller-Rabin.
1073 The maximal error rate for primes with more than 1080 bits is lowered
1075 [Kurt Roeckx, Annie Yousar]
1077 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
1080 *) Add blinding to ECDSA and DSA signatures to protect against side channel
1081 attacks discovered by Keegan Ryan (NCC Group).
1084 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
1085 now allow empty (zero character) pass phrases.
1088 *) Certificate time validation (X509_cmp_time) enforces stricter
1089 compliance with RFC 5280. Fractional seconds and timezone offsets
1090 are no longer allowed.
1093 *) Fixed a text canonicalisation bug in CMS
1095 Where a CMS detached signature is used with text content the text goes
1096 through a canonicalisation process first prior to signing or verifying a
1097 signature. This process strips trailing space at the end of lines, converts
1098 line terminators to CRLF and removes additional trailing line terminators
1099 at the end of a file. A bug in the canonicalisation process meant that
1100 some characters, such as form-feed, were incorrectly treated as whitespace
1101 and removed. This is contrary to the specification (RFC5485). This fix
1102 could mean that detached text data signed with an earlier version of
1103 OpenSSL 1.1.0 may fail to verify using the fixed version, or text data
1104 signed with a fixed OpenSSL may fail to verify with an earlier version of
1105 OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data
1106 and use the "-binary" flag (for the "cms" command line application) or set
1107 the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()).
1110 Changes between 1.1.0g and 1.1.0h [27 Mar 2018]
1112 *) Constructed ASN.1 types with a recursive definition could exceed the stack
1114 Constructed ASN.1 types with a recursive definition (such as can be found
1115 in PKCS7) could eventually exceed the stack given malicious input with
1116 excessive recursion. This could result in a Denial Of Service attack. There
1117 are no such structures used within SSL/TLS that come from untrusted sources
1118 so this is considered safe.
1120 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
1125 *) Incorrect CRYPTO_memcmp on HP-UX PA-RISC
1127 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
1128 effectively reduced to only comparing the least significant bit of each
1129 byte. This allows an attacker to forge messages that would be considered as
1130 authenticated in an amount of tries lower than that guaranteed by the
1131 security claims of the scheme. The module can only be compiled by the
1132 HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
1134 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
1139 *) Add a build target 'build_all_generated', to build all generated files
1140 and only that. This can be used to prepare everything that requires
1141 things like perl for a system that lacks perl and then move everything
1142 to that system and do the rest of the build there.
1145 *) Backport SSL_OP_NO_RENGOTIATION
1147 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
1148 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
1149 changes this is no longer possible in 1.1.0. Therefore the new
1150 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
1151 1.1.0 to provide equivalent functionality.
1153 Note that if an application built against 1.1.0h headers (or above) is run
1154 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
1155 accepted but nothing will happen, i.e. renegotiation will not be prevented.
1158 *) Removed the OS390-Unix config target. It relied on a script that doesn't
1162 *) rsaz_1024_mul_avx2 overflow bug on x86_64
1164 There is an overflow bug in the AVX2 Montgomery multiplication procedure
1165 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
1166 Analysis suggests that attacks against RSA and DSA as a result of this
1167 defect would be very difficult to perform and are not believed likely.
1168 Attacks against DH1024 are considered just feasible, because most of the
1169 work necessary to deduce information about a private key may be performed
1170 offline. The amount of resources required for such an attack would be
1171 significant. However, for an attack on TLS to be meaningful, the server
1172 would have to share the DH1024 private key among multiple clients, which is
1173 no longer an option since CVE-2016-0701.
1175 This only affects processors that support the AVX2 but not ADX extensions
1176 like Intel Haswell (4th generation).
1178 This issue was reported to OpenSSL by David Benjamin (Google). The issue
1179 was originally found via the OSS-Fuzz project.
1183 Changes between 1.1.0f and 1.1.0g [2 Nov 2017]
1185 *) bn_sqrx8x_internal carry bug on x86_64
1187 There is a carry propagating bug in the x86_64 Montgomery squaring
1188 procedure. No EC algorithms are affected. Analysis suggests that attacks
1189 against RSA and DSA as a result of this defect would be very difficult to
1190 perform and are not believed likely. Attacks against DH are considered just
1191 feasible (although very difficult) because most of the work necessary to
1192 deduce information about a private key may be performed offline. The amount
1193 of resources required for such an attack would be very significant and
1194 likely only accessible to a limited number of attackers. An attacker would
1195 additionally need online access to an unpatched system using the target
1196 private key in a scenario with persistent DH parameters and a private
1197 key that is shared between multiple clients.
1199 This only affects processors that support the BMI1, BMI2 and ADX extensions
1200 like Intel Broadwell (5th generation) and later or AMD Ryzen.
1202 This issue was reported to OpenSSL by the OSS-Fuzz project.
1206 *) Malformed X.509 IPAddressFamily could cause OOB read
1208 If an X.509 certificate has a malformed IPAddressFamily extension,
1209 OpenSSL could do a one-byte buffer overread. The most likely result
1210 would be an erroneous display of the certificate in text format.
1212 This issue was reported to OpenSSL by the OSS-Fuzz project.
1216 Changes between 1.1.0e and 1.1.0f [25 May 2017]
1218 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
1219 platform rather than 'mingw'.
1222 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
1223 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
1224 which is the minimum version we support.
1227 Changes between 1.1.0d and 1.1.0e [16 Feb 2017]
1229 *) Encrypt-Then-Mac renegotiation crash
1231 During a renegotiation handshake if the Encrypt-Then-Mac extension is
1232 negotiated where it was not in the original handshake (or vice-versa) then
1233 this can cause OpenSSL to crash (dependant on ciphersuite). Both clients
1234 and servers are affected.
1236 This issue was reported to OpenSSL by Joe Orton (Red Hat).
1240 Changes between 1.1.0c and 1.1.0d [26 Jan 2017]
1242 *) Truncated packet could crash via OOB read
1244 If one side of an SSL/TLS path is running on a 32-bit host and a specific
1245 cipher is being used, then a truncated packet can cause that host to
1246 perform an out-of-bounds read, usually resulting in a crash.
1248 This issue was reported to OpenSSL by Robert Święcki of Google.
1252 *) Bad (EC)DHE parameters cause a client crash
1254 If a malicious server supplies bad parameters for a DHE or ECDHE key
1255 exchange then this can result in the client attempting to dereference a
1256 NULL pointer leading to a client crash. This could be exploited in a Denial
1259 This issue was reported to OpenSSL by Guido Vranken.
1263 *) BN_mod_exp may produce incorrect results on x86_64
1265 There is a carry propagating bug in the x86_64 Montgomery squaring
1266 procedure. No EC algorithms are affected. Analysis suggests that attacks
1267 against RSA and DSA as a result of this defect would be very difficult to
1268 perform and are not believed likely. Attacks against DH are considered just
1269 feasible (although very difficult) because most of the work necessary to
1270 deduce information about a private key may be performed offline. The amount
1271 of resources required for such an attack would be very significant and
1272 likely only accessible to a limited number of attackers. An attacker would
1273 additionally need online access to an unpatched system using the target
1274 private key in a scenario with persistent DH parameters and a private
1275 key that is shared between multiple clients. For example this can occur by
1276 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
1277 similar to CVE-2015-3193 but must be treated as a separate problem.
1279 This issue was reported to OpenSSL by the OSS-Fuzz project.
1283 Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
1285 *) ChaCha20/Poly1305 heap-buffer-overflow
1287 TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to
1288 a DoS attack by corrupting larger payloads. This can result in an OpenSSL
1289 crash. This issue is not considered to be exploitable beyond a DoS.
1291 This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
1295 *) CMS Null dereference
1297 Applications parsing invalid CMS structures can crash with a NULL pointer
1298 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
1299 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
1300 structure callback if an attempt is made to free certain invalid encodings.
1301 Only CHOICE structures using a callback which do not handle NULL value are
1304 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
1308 *) Montgomery multiplication may produce incorrect results
1310 There is a carry propagating bug in the Broadwell-specific Montgomery
1311 multiplication procedure that handles input lengths divisible by, but
1312 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
1313 and DH private keys are impossible. This is because the subroutine in
1314 question is not used in operations with the private key itself and an input
1315 of the attacker's direct choice. Otherwise the bug can manifest itself as
1316 transient authentication and key negotiation failures or reproducible
1317 erroneous outcome of public-key operations with specially crafted input.
1318 Among EC algorithms only Brainpool P-512 curves are affected and one
1319 presumably can attack ECDH key negotiation. Impact was not analyzed in
1320 detail, because pre-requisites for attack are considered unlikely. Namely
1321 multiple clients have to choose the curve in question and the server has to
1322 share the private key among them, neither of which is default behaviour.
1323 Even then only clients that chose the curve will be affected.
1325 This issue was publicly reported as transient failures and was not
1326 initially recognized as a security issue. Thanks to Richard Morgan for
1327 providing reproducible case.
1331 *) Removed automatic addition of RPATH in shared libraries and executables,
1332 as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
1335 Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
1337 *) Fix Use After Free for large message sizes
1339 The patch applied to address CVE-2016-6307 resulted in an issue where if a
1340 message larger than approx 16k is received then the underlying buffer to
1341 store the incoming message is reallocated and moved. Unfortunately a
1342 dangling pointer to the old location is left which results in an attempt to
1343 write to the previously freed location. This is likely to result in a
1344 crash, however it could potentially lead to execution of arbitrary code.
1346 This issue only affects OpenSSL 1.1.0a.
1348 This issue was reported to OpenSSL by Robert Święcki.
1352 Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
1354 *) OCSP Status Request extension unbounded memory growth
1356 A malicious client can send an excessively large OCSP Status Request
1357 extension. If that client continually requests renegotiation, sending a
1358 large OCSP Status Request extension each time, then there will be unbounded
1359 memory growth on the server. This will eventually lead to a Denial Of
1360 Service attack through memory exhaustion. Servers with a default
1361 configuration are vulnerable even if they do not support OCSP. Builds using
1362 the "no-ocsp" build time option are not affected.
1364 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1368 *) SSL_peek() hang on empty record
1370 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
1371 sends an empty record. This could be exploited by a malicious peer in a
1372 Denial Of Service attack.
1374 This issue was reported to OpenSSL by Alex Gaynor.
1378 *) Excessive allocation of memory in tls_get_message_header() and
1379 dtls1_preprocess_fragment()
1381 A (D)TLS message includes 3 bytes for its length in the header for the
1382 message. This would allow for messages up to 16Mb in length. Messages of
1383 this length are excessive and OpenSSL includes a check to ensure that a
1384 peer is sending reasonably sized messages in order to avoid too much memory
1385 being consumed to service a connection. A flaw in the logic of version
1386 1.1.0 means that memory for the message is allocated too early, prior to
1387 the excessive message length check. Due to way memory is allocated in
1388 OpenSSL this could mean an attacker could force up to 21Mb to be allocated
1389 to service a connection. This could lead to a Denial of Service through
1390 memory exhaustion. However, the excessive message length check still takes
1391 place, and this would cause the connection to immediately fail. Assuming
1392 that the application calls SSL_free() on the failed connection in a timely
1393 manner then the 21Mb of allocated memory will then be immediately freed
1394 again. Therefore the excessive memory allocation will be transitory in
1395 nature. This then means that there is only a security impact if:
1397 1) The application does not call SSL_free() in a timely manner in the event
1398 that the connection fails
1400 2) The application is working in a constrained environment where there is
1401 very little free memory
1403 3) The attacker initiates multiple connection attempts such that there are
1404 multiple connections in a state where memory has been allocated for the
1405 connection; SSL_free() has not yet been called; and there is insufficient
1406 memory to service the multiple requests.
1408 Except in the instance of (1) above any Denial Of Service is likely to be
1409 transitory because as soon as the connection fails the memory is
1410 subsequently freed again in the SSL_free() call. However there is an
1411 increased risk during this period of application crashes due to the lack of
1412 memory - which would then mean a more serious Denial of Service.
1414 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1415 (CVE-2016-6307 and CVE-2016-6308)
1418 *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
1419 had to be removed. Primary reason is that vendor assembler can't
1420 assemble our modules with -KPIC flag. As result it, assembly
1421 support, was not even available as option. But its lack means
1422 lack of side-channel resistant code, which is incompatible with
1423 security by todays standards. Fortunately gcc is readily available
1424 prepackaged option, which we firmly point at...
1427 Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
1429 *) Windows command-line tool supports UTF-8 opt-in option for arguments
1430 and console input. Setting OPENSSL_WIN32_UTF8 environment variable
1431 (to any value) allows Windows user to access PKCS#12 file generated
1432 with Windows CryptoAPI and protected with non-ASCII password, as well
1433 as files generated under UTF-8 locale on Linux also protected with
1437 *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites
1438 have been disabled by default and removed from DEFAULT, just like RC4.
1439 See the RC4 item below to re-enable both.
1442 *) The method for finding the storage location for the Windows RAND seed file
1443 has changed. First we check %RANDFILE%. If that is not set then we check
1444 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
1445 all else fails we fall back to C:\.
1448 *) The EVP_EncryptUpdate() function has had its return type changed from void
1449 to int. A return of 0 indicates and error while a return of 1 indicates
1453 *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
1454 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
1455 off the constant time implementation for RSA, DSA and DH have been made
1456 no-ops and deprecated.
1459 *) Windows RAND implementation was simplified to only get entropy by
1460 calling CryptGenRandom(). Various other RAND-related tickets
1462 [Joseph Wylie Yandle, Rich Salz]
1464 *) The stack and lhash API's were renamed to start with OPENSSL_SK_
1465 and OPENSSL_LH_, respectively. The old names are available
1466 with API compatibility. They new names are now completely documented.
1469 *) Unify TYPE_up_ref(obj) methods signature.
1470 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
1471 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
1472 int (instead of void) like all others TYPE_up_ref() methods.
1473 So now these methods also check the return value of CRYPTO_atomic_add(),
1474 and the validity of object reference counter.
1475 [fdasilvayy@gmail.com]
1477 *) With Windows Visual Studio builds, the .pdb files are installed
1478 alongside the installed libraries and executables. For a static
1479 library installation, ossl_static.pdb is the associate compiler
1480 generated .pdb file to be used when linking programs.
1483 *) Remove openssl.spec. Packaging files belong with the packagers.
1486 *) Automatic Darwin/OSX configuration has had a refresh, it will now
1487 recognise x86_64 architectures automatically. You can still decide
1488 to build for a different bitness with the environment variable
1489 KERNEL_BITS (can be 32 or 64), for example:
1491 KERNEL_BITS=32 ./config
1495 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
1496 256 bit AES and HMAC with SHA256.
1499 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only).
1502 *) Triple-DES ciphers have been moved from HIGH to MEDIUM.
1505 *) To enable users to have their own config files and build file templates,
1506 Configure looks in the directory indicated by the environment variable
1507 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
1508 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
1509 name and is used as is.
1512 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
1513 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
1514 X509_CERT_FILE_CTX was removed.
1517 *) "shared" builds are now the default. To create only static libraries use
1518 the "no-shared" Configure option.
1521 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
1522 All of these option have not worked for some while and are fundamental
1526 *) Make various cleanup routines no-ops and mark them as deprecated. Most
1527 global cleanup functions are no longer required because they are handled
1528 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
1529 Explicitly de-initing can cause problems (e.g. where a library that uses
1530 OpenSSL de-inits, but an application is still using it). The affected
1531 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
1532 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
1533 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
1534 COMP_zlib_cleanup().
1537 *) --strict-warnings no longer enables runtime debugging options
1538 such as REF_DEBUG. Instead, debug options are automatically
1539 enabled with '--debug' builds.
1540 [Andy Polyakov, Emilia Käsper]
1542 *) Made DH and DH_METHOD opaque. The structures for managing DH objects
1543 have been moved out of the public header files. New functions for managing
1544 these have been added.
1547 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA
1548 objects have been moved out of the public header files. New
1549 functions for managing these have been added.
1552 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
1553 have been moved out of the public header files. New functions for managing
1554 these have been added.
1557 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
1558 moved out of the public header files. New functions for managing these
1562 *) Removed no-rijndael as a config option. Rijndael is an old name for AES.
1565 *) Removed the mk1mf build scripts.
1568 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
1569 it is always safe to #include a header now.
1572 *) Removed the aged BC-32 config and all its supporting scripts
1575 *) Removed support for Ultrix, Netware, and OS/2.
1578 *) Add support for HKDF.
1579 [Alessandro Ghedini]
1581 *) Add support for blake2b and blake2s
1584 *) Added support for "pipelining". Ciphers that have the
1585 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
1586 encryptions/decryptions simultaneously. There are currently no built-in
1587 ciphers with this property but the expectation is that engines will be able
1588 to offer it to significantly improve throughput. Support has been extended
1589 into libssl so that multiple records for a single connection can be
1590 processed in one go (for >=TLS 1.1).
1593 *) Added the AFALG engine. This is an async capable engine which is able to
1594 offload work to the Linux kernel. In this initial version it only supports
1595 AES128-CBC. The kernel must be version 4.1.0 or greater.
1598 *) OpenSSL now uses a new threading API. It is no longer necessary to
1599 set locking callbacks to use OpenSSL in a multi-threaded environment. There
1600 are two supported threading models: pthreads and windows threads. It is
1601 also possible to configure OpenSSL at compile time for "no-threads". The
1602 old threading API should no longer be used. The functions have been
1603 replaced with "no-op" compatibility macros.
1604 [Alessandro Ghedini, Matt Caswell]
1606 *) Modify behavior of ALPN to invoke callback after SNI/servername
1607 callback, such that updates to the SSL_CTX affect ALPN.
1610 *) Add SSL_CIPHER queries for authentication and key-exchange.
1613 *) Changes to the DEFAULT cipherlist:
1614 - Prefer (EC)DHE handshakes over plain RSA.
1615 - Prefer AEAD ciphers over legacy ciphers.
1616 - Prefer ECDSA over RSA when both certificates are available.
1617 - Prefer TLSv1.2 ciphers/PRF.
1618 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
1622 *) Change the ECC default curve list to be this, in order: x25519,
1623 secp256r1, secp521r1, secp384r1.
1626 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
1627 disabled by default. They can be re-enabled using the
1628 enable-weak-ssl-ciphers option to Configure.
1631 *) If the server has ALPN configured, but supports no protocols that the
1632 client advertises, send a fatal "no_application_protocol" alert.
1633 This behaviour is SHALL in RFC 7301, though it isn't universally
1634 implemented by other servers.
1637 *) Add X25519 support.
1638 Add ASN.1 and EVP_PKEY methods for X25519. This includes support
1639 for public and private key encoding using the format documented in
1640 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
1641 key generation and key derivation.
1643 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
1647 *) Deprecate SRP_VBASE_get_by_user.
1648 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
1649 In order to fix an unavoidable memory leak (CVE-2016-0798),
1650 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
1651 seed, even if the seed is configured.
1653 Users should use SRP_VBASE_get1_by_user instead. Note that in
1654 SRP_VBASE_get1_by_user, caller must free the returned value. Note
1655 also that even though configuring the SRP seed attempts to hide
1656 invalid usernames by continuing the handshake with fake
1657 credentials, this behaviour is not constant time and no strong
1658 guarantees are made that the handshake is indistinguishable from
1659 that of a valid user.
1662 *) Configuration change; it's now possible to build dynamic engines
1663 without having to build shared libraries and vice versa. This
1664 only applies to the engines in engines/, those in crypto/engine/
1665 will always be built into libcrypto (i.e. "static").
1667 Building dynamic engines is enabled by default; to disable, use
1668 the configuration option "disable-dynamic-engine".
1670 The only requirements for building dynamic engines are the
1671 presence of the DSO module and building with position independent
1672 code, so they will also automatically be disabled if configuring
1673 with "disable-dso" or "disable-pic".
1675 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
1676 are also taken away from openssl/opensslconf.h, as they are
1680 *) Configuration change; if there is a known flag to compile
1681 position independent code, it will always be applied on the
1682 libcrypto and libssl object files, and never on the application
1683 object files. This means other libraries that use routines from
1684 libcrypto / libssl can be made into shared libraries regardless
1685 of how OpenSSL was configured.
1687 If this isn't desirable, the configuration options "disable-pic"
1688 or "no-pic" can be used to disable the use of PIC. This will
1689 also disable building shared libraries and dynamic engines.
1692 *) Removed JPAKE code. It was experimental and has no wide use.
1695 *) The INSTALL_PREFIX Makefile variable has been renamed to
1696 DESTDIR. That makes for less confusion on what this variable
1697 is for. Also, the configuration option --install_prefix is
1701 *) Heartbeat for TLS has been removed and is disabled by default
1702 for DTLS; configure with enable-heartbeats. Code that uses the
1703 old #define's might need to be updated.
1704 [Emilia Käsper, Rich Salz]
1706 *) Rename REF_CHECK to REF_DEBUG.
1709 *) New "unified" build system
1711 The "unified" build system is aimed to be a common system for all
1712 platforms we support. With it comes new support for VMS.
1714 This system builds supports building in a different directory tree
1715 than the source tree. It produces one Makefile (for unix family
1716 or lookalikes), or one descrip.mms (for VMS).
1718 The source of information to make the Makefile / descrip.mms is
1719 small files called 'build.info', holding the necessary
1720 information for each directory with source to compile, and a
1721 template in Configurations, like unix-Makefile.tmpl or
1724 With this change, the library names were also renamed on Windows
1725 and on VMS. They now have names that are closer to the standard
1726 on Unix, and include the major version number, and in certain
1727 cases, the architecture they are built for. See "Notes on shared
1728 libraries" in INSTALL.
1730 We rely heavily on the perl module Text::Template.
1733 *) Added support for auto-initialisation and de-initialisation of the library.
1734 OpenSSL no longer requires explicit init or deinit routines to be called,
1735 except in certain circumstances. See the OPENSSL_init_crypto() and
1736 OPENSSL_init_ssl() man pages for further information.
1739 *) The arguments to the DTLSv1_listen function have changed. Specifically the
1740 "peer" argument is now expected to be a BIO_ADDR object.
1742 *) Rewrite of BIO networking library. The BIO library lacked consistent
1743 support of IPv6, and adding it required some more extensive
1744 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
1745 which hold all types of addresses and chains of address information.
1746 It also introduces a new API, with functions like BIO_socket,
1747 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
1748 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
1749 have been adapted accordingly.
1752 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
1756 *) CRIME protection: disable compression by default, even if OpenSSL is
1757 compiled with zlib enabled. Applications can still enable compression
1758 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
1759 using the SSL_CONF library to configure compression.
1762 *) The signature of the session callback configured with
1763 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
1764 was explicitly marked as 'const unsigned char*' instead of
1768 *) Always DPURIFY. Remove the use of uninitialized memory in the
1769 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
1772 *) Removed many obsolete configuration items, including
1773 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
1774 MD2_CHAR, MD2_INT, MD2_LONG
1776 IDEA_SHORT, IDEA_LONG
1777 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
1778 [Rich Salz, with advice from Andy Polyakov]
1780 *) Many BN internals have been moved to an internal header file.
1781 [Rich Salz with help from Andy Polyakov]
1783 *) Configuration and writing out the results from it has changed.
1784 Files such as Makefile include/openssl/opensslconf.h and are now
1785 produced through general templates, such as Makefile.in and
1786 crypto/opensslconf.h.in and some help from the perl module
1789 Also, the center of configuration information is no longer
1790 Makefile. Instead, Configure produces a perl module in
1791 configdata.pm which holds most of the config data (in the hash
1792 table %config), the target data that comes from the target
1793 configuration in one of the Configurations/*.conf files (in
1797 *) To clarify their intended purposes, the Configure options
1798 --prefix and --openssldir change their semantics, and become more
1799 straightforward and less interdependent.
1801 --prefix shall be used exclusively to give the location INSTALLTOP
1802 where programs, scripts, libraries, include files and manuals are
1803 going to be installed. The default is now /usr/local.
1805 --openssldir shall be used exclusively to give the default
1806 location OPENSSLDIR where certificates, private keys, CRLs are
1807 managed. This is also where the default openssl.cnf gets
1809 If the directory given with this option is a relative path, the
1810 values of both the --prefix value and the --openssldir value will
1811 be combined to become OPENSSLDIR.
1812 The default for --openssldir is INSTALLTOP/ssl.
1814 Anyone who uses --openssldir to specify where OpenSSL is to be
1815 installed MUST change to use --prefix instead.
1818 *) The GOST engine was out of date and therefore it has been removed. An up
1819 to date GOST engine is now being maintained in an external repository.
1820 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
1821 support for GOST ciphersuites (these are only activated if a GOST engine
1825 *) EGD is no longer supported by default; use enable-egd when
1827 [Ben Kaduk and Rich Salz]
1829 *) The distribution now has Makefile.in files, which are used to
1830 create Makefile's when Configure is run. *Configure must be run
1831 before trying to build now.*
1834 *) The return value for SSL_CIPHER_description() for error conditions
1838 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication.
1840 Obtaining and performing DNSSEC validation of TLSA records is
1841 the application's responsibility. The application provides
1842 the TLSA records of its choice to OpenSSL, and these are then
1843 used to authenticate the peer.
1845 The TLSA records need not even come from DNS. They can, for
1846 example, be used to implement local end-entity certificate or
1847 trust-anchor "pinning", where the "pin" data takes the form
1848 of TLSA records, which can augment or replace verification
1849 based on the usual WebPKI public certification authorities.
1852 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
1853 continues to support deprecated interfaces in default builds.
1854 However, applications are strongly advised to compile their
1855 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
1856 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
1857 or the 1.1.0 releases.
1859 In environments in which all applications have been ported to
1860 not use any deprecated interfaces OpenSSL's Configure script
1861 should be used with the --api=1.1.0 option to entirely remove
1862 support for the deprecated features from the library and
1863 unconditionally disable them in the installed headers.
1864 Essentially the same effect can be achieved with the "no-deprecated"
1865 argument to Configure, except that this will always restrict
1866 the build to just the latest API, rather than a fixed API
1869 As applications are ported to future revisions of the API,
1870 they should update their compile-time OPENSSL_API_COMPAT define
1871 accordingly, but in most cases should be able to continue to
1872 compile with later releases.
1874 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
1875 0x10000000L and 0x00908000L, respectively. However those
1876 versions did not support the OPENSSL_API_COMPAT feature, and
1877 so applications are not typically tested for explicit support
1878 of just the undeprecated features of either release.
1881 *) Add support for setting the minimum and maximum supported protocol.
1882 It can bet set via the SSL_set_min_proto_version() and
1883 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
1884 MaxProtocol. It's recommended to use the new APIs to disable
1885 protocols instead of disabling individual protocols using
1886 SSL_set_options() or SSL_CONF's Protocol. This change also
1887 removes support for disabling TLS 1.2 in the OpenSSL TLS
1888 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
1891 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
1894 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
1895 and integrates ECDSA and ECDH functionality into EC. Implementations can
1896 now redirect key generation and no longer need to convert to or from
1899 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
1900 include the ec.h header file instead.
1903 *) Remove support for all 40 and 56 bit ciphers. This includes all the export
1904 ciphers who are no longer supported and drops support the ephemeral RSA key
1905 exchange. The LOW ciphers currently doesn't have any ciphers in it.
1908 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
1909 opaque. For HMAC_CTX, the following constructors and destructors
1912 HMAC_CTX *HMAC_CTX_new(void);
1913 void HMAC_CTX_free(HMAC_CTX *ctx);
1915 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
1916 destroy such methods has been added. See EVP_MD_meth_new(3) and
1917 EVP_CIPHER_meth_new(3) for documentation.
1920 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
1921 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
1922 EVP_MD_CTX_reset() should be called instead to reinitialise
1923 an already created structure.
1924 2) For consistency with the majority of our object creators and
1925 destructors, EVP_MD_CTX_(create|destroy) were renamed to
1926 EVP_MD_CTX_(new|free). The old names are retained as macros
1927 for deprecated builds.
1930 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
1931 cryptographic operations to be performed asynchronously as long as an
1932 asynchronous capable engine is used. See the ASYNC_start_job() man page for
1933 further details. Libssl has also had this capability integrated with the
1934 introduction of the new mode SSL_MODE_ASYNC and associated error
1935 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
1936 pages. This work was developed in partnership with Intel Corp.
1939 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
1940 always enabled now. If you want to disable the support you should
1941 exclude it using the list of supported ciphers. This also means that the
1942 "-no_ecdhe" option has been removed from s_server.
1945 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
1946 SSL_{CTX_}set1_curves() which can set a list.
1949 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
1950 curve you want to support using SSL_{CTX_}set1_curves().
1953 *) State machine rewrite. The state machine code has been significantly
1954 refactored in order to remove much duplication of code and solve issues
1955 with the old code (see ssl/statem/README for further details). This change
1956 does have some associated API changes. Notably the SSL_state() function
1957 has been removed and replaced by SSL_get_state which now returns an
1958 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
1959 altogether. The previous handshake states defined in ssl.h and ssl3.h have
1963 *) All instances of the string "ssleay" in the public API were replaced
1964 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
1965 Some error codes related to internal RSA_eay API's were renamed.
1968 *) The demo files in crypto/threads were moved to demo/threads.
1971 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
1973 [Matt Caswell, Rich Salz]
1975 *) New ASN.1 embed macro.
1977 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
1978 structure is not allocated: it is part of the parent. That is instead of
1986 This reduces memory fragmentation and make it impossible to accidentally
1987 set a mandatory field to NULL.
1989 This currently only works for some fields specifically a SEQUENCE, CHOICE,
1990 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
1991 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
1995 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
1998 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
1999 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
2000 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
2001 DES and RC4 ciphersuites.
2004 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
2005 This changes the decoding behaviour for some invalid messages,
2006 though the change is mostly in the more lenient direction, and
2007 legacy behaviour is preserved as much as possible.
2010 *) Fix no-stdio build.
2011 [ David Woodhouse <David.Woodhouse@intel.com> and also
2012 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
2014 *) New testing framework
2015 The testing framework has been largely rewritten and is now using
2016 perl and the perl modules Test::Harness and an extended variant of
2017 Test::More called OpenSSL::Test to do its work. All test scripts in
2018 test/ have been rewritten into test recipes, and all direct calls to
2019 executables in test/Makefile have become individual recipes using the
2020 simplified testing OpenSSL::Test::Simple.
2022 For documentation on our testing modules, do:
2024 perldoc test/testlib/OpenSSL/Test/Simple.pm
2025 perldoc test/testlib/OpenSSL/Test.pm
2029 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
2030 are used; the latter aborts on memory leaks (usually checked on exit).
2031 Some undocumented "set malloc, etc., hooks" functions were removed
2032 and others were changed. All are now documented.
2035 *) In DSA_generate_parameters_ex, if the provided seed is too short,
2037 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
2039 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
2040 from RFC4279, RFC4785, RFC5487, RFC5489.
2042 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
2043 original RSA_PSK patch.
2046 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
2047 era flag was never set throughout the codebase (only read). Also removed
2048 SSL3_FLAGS_POP_BUFFER which was only used if
2049 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
2052 *) Changed the default name options in the "ca", "crl", "req" and "x509"
2053 to be "oneline" instead of "compat".
2056 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
2057 not aware of clients that still exhibit this bug, and the workaround
2058 hasn't been working properly for a while.
2061 *) The return type of BIO_number_read() and BIO_number_written() as well as
2062 the corresponding num_read and num_write members in the BIO structure has
2063 changed from unsigned long to uint64_t. On platforms where an unsigned
2064 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
2068 *) Given the pervasive nature of TLS extensions it is inadvisable to run
2069 OpenSSL without support for them. It also means that maintaining
2070 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
2071 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
2074 *) Removed support for the two export grade static DH ciphersuites
2075 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
2076 were newly added (along with a number of other static DH ciphersuites) to
2077 1.0.2. However the two export ones have *never* worked since they were
2078 introduced. It seems strange in any case to be adding new export
2079 ciphersuites, and given "logjam" it also does not seem correct to fix them.
2082 *) Version negotiation has been rewritten. In particular SSLv23_method(),
2083 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
2084 and turned into macros which simply call the new preferred function names
2085 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
2086 should use the new names instead. Also as part of this change the ssl23.h
2087 header file has been removed.
2090 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
2091 code and the associated standard is no longer considered fit-for-purpose.
2094 *) RT2547 was closed. When generating a private key, try to make the
2095 output file readable only by the owner. This behavior change might
2096 be noticeable when interacting with other software.
2098 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
2102 *) Added HTTP GET support to the ocsp command.
2105 *) Changed default digest for the dgst and enc commands from MD5 to
2109 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
2112 *) Added support for TLS extended master secret from
2113 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
2114 initial patch which was a great help during development.
2117 *) All libssl internal structures have been removed from the public header
2118 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
2119 now redundant). Users should not attempt to access internal structures
2120 directly. Instead they should use the provided API functions.
2123 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
2124 Access to deprecated functions can be re-enabled by running config with
2125 "enable-deprecated". In addition applications wishing to use deprecated
2126 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
2127 will, by default, disable some transitive includes that previously existed
2128 in the header files (e.g. ec.h will no longer, by default, include bn.h)
2131 *) Added support for OCB mode. OpenSSL has been granted a patent license
2132 compatible with the OpenSSL license for use of OCB. Details are available
2133 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
2134 for OCB can be removed by calling config with no-ocb.
2137 *) SSLv2 support has been removed. It still supports receiving a SSLv2
2138 compatible client hello.
2141 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
2142 done while fixing the error code for the key-too-small case.
2143 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
2145 *) CA.sh has been removed; use CA.pl instead.
2148 *) Removed old DES API.
2151 *) Remove various unsupported platforms:
2157 Sinix/ReliantUNIX RM400
2162 16-bit platforms such as WIN16
2165 *) Clean up OPENSSL_NO_xxx #define's
2166 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
2167 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
2168 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
2169 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
2170 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
2171 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
2172 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
2173 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
2174 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
2175 Remove MS_STATIC; it's a relic from platforms <32 bits.
2178 *) Cleaned up dead code
2179 Remove all but one '#ifdef undef' which is to be looked at.
2182 *) Clean up calling of xxx_free routines.
2183 Just like free(), fix most of the xxx_free routines to accept
2184 NULL. Remove the non-null checks from callers. Save much code.
2187 *) Add secure heap for storage of private keys (when possible).
2188 Add BIO_s_secmem(), CBIGNUM, etc.
2189 Contributed by Akamai Technologies under our Corporate CLA.
2192 *) Experimental support for a new, fast, unbiased prime candidate generator,
2193 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
2194 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
2196 *) New output format NSS in the sess_id command line tool. This allows
2197 exporting the session id and the master key in NSS keylog format.
2198 [Martin Kaiser <martin@kaiser.cx>]
2200 *) Harmonize version and its documentation. -f flag is used to display
2202 [mancha <mancha1@zoho.com>]
2204 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
2205 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
2206 [mancha <mancha1@zoho.com>]
2208 *) Fix some double frees. These are not thought to be exploitable.
2209 [mancha <mancha1@zoho.com>]
2211 *) A missing bounds check in the handling of the TLS heartbeat extension
2212 can be used to reveal up to 64k of memory to a connected client or
2215 Thanks for Neel Mehta of Google Security for discovering this bug and to
2216 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
2217 preparing the fix (CVE-2014-0160)
2218 [Adam Langley, Bodo Moeller]
2220 *) Fix for the attack described in the paper "Recovering OpenSSL
2221 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
2222 by Yuval Yarom and Naomi Benger. Details can be obtained from:
2223 http://eprint.iacr.org/2014/140
2225 Thanks to Yuval Yarom and Naomi Benger for discovering this
2226 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
2227 [Yuval Yarom and Naomi Benger]
2229 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
2230 this fixes a limitation in previous versions of OpenSSL.
2233 *) Experimental encrypt-then-mac support.
2235 Experimental support for encrypt then mac from
2236 draft-gutmann-tls-encrypt-then-mac-02.txt
2238 To enable it set the appropriate extension number (0x42 for the test
2239 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
2241 For non-compliant peers (i.e. just about everything) this should have no
2244 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
2248 *) Add EVP support for key wrapping algorithms, to avoid problems with
2249 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
2250 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
2251 algorithms and include tests cases.
2254 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
2258 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
2259 MGF1 digest and OAEP label.
2262 *) Make openssl verify return errors.
2263 [Chris Palmer <palmer@google.com> and Ben Laurie]
2265 *) New function ASN1_TIME_diff to calculate the difference between two
2266 ASN1_TIME structures or one structure and the current time.
2269 *) Update fips_test_suite to support multiple command line options. New
2270 test to induce all self test errors in sequence and check expected
2274 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
2275 sign or verify all in one operation.
2278 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
2279 test programs and fips_test_suite. Includes functionality to parse
2280 the minimal script output of fipsalgest.pl directly.
2283 *) Add authorisation parameter to FIPS_module_mode_set().
2286 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
2289 *) Use separate DRBG fields for internal and external flags. New function
2290 FIPS_drbg_health_check() to perform on demand health checking. Add
2291 generation tests to fips_test_suite with reduced health check interval to
2292 demonstrate periodic health checking. Add "nodh" option to
2293 fips_test_suite to skip very slow DH test.
2296 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
2300 *) More extensive health check for DRBG checking many more failure modes.
2301 New function FIPS_selftest_drbg_all() to handle every possible DRBG
2302 combination: call this in fips_test_suite.
2305 *) Add support for canonical generation of DSA parameter 'g'. See
2308 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
2309 POST to handle HMAC cases.
2312 *) Add functions FIPS_module_version() and FIPS_module_version_text()
2313 to return numerical and string versions of the FIPS module number.
2316 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
2317 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
2318 outside the validated module in the FIPS capable OpenSSL.
2321 *) Minor change to DRBG entropy callback semantics. In some cases
2322 there is no multiple of the block length between min_len and
2323 max_len. Allow the callback to return more than max_len bytes
2324 of entropy but discard any extra: it is the callback's responsibility
2325 to ensure that the extra data discarded does not impact the
2326 requested amount of entropy.
2329 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
2330 information in FIPS186-3, SP800-57 and SP800-131A.
2333 *) CCM support via EVP. Interface is very similar to GCM case except we
2334 must supply all data in one chunk (i.e. no update, final) and the
2335 message length must be supplied if AAD is used. Add algorithm test
2339 *) Initial version of POST overhaul. Add POST callback to allow the status
2340 of POST to be monitored and/or failures induced. Modify fips_test_suite
2341 to use callback. Always run all selftests even if one fails.
2344 *) XTS support including algorithm test driver in the fips_gcmtest program.
2345 Note: this does increase the maximum key length from 32 to 64 bytes but
2346 there should be no binary compatibility issues as existing applications
2347 will never use XTS mode.
2350 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
2351 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
2352 performs algorithm blocking for unapproved PRNG types. Also do not
2353 set PRNG type in FIPS_mode_set(): leave this to the application.
2354 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
2355 the standard OpenSSL PRNG: set additional data to a date time vector.
2358 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
2359 This shouldn't present any incompatibility problems because applications
2360 shouldn't be using these directly and any that are will need to rethink
2361 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
2364 *) Extensive self tests and health checking required by SP800-90 DRBG.
2365 Remove strength parameter from FIPS_drbg_instantiate and always
2366 instantiate at maximum supported strength.
2369 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
2372 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
2375 *) New function DH_compute_key_padded() to compute a DH key and pad with
2376 leading zeroes if needed: this complies with SP800-56A et al.
2379 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
2380 anything, incomplete, subject to change and largely untested at present.
2383 *) Modify fipscanisteronly build option to only build the necessary object
2384 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
2387 *) Add experimental option FIPSSYMS to give all symbols in
2388 fipscanister.o and FIPS or fips prefix. This will avoid
2389 conflicts with future versions of OpenSSL. Add perl script
2390 util/fipsas.pl to preprocess assembly language source files
2391 and rename any affected symbols.
2394 *) Add selftest checks and algorithm block of non-fips algorithms in
2395 FIPS mode. Remove DES2 from selftests.
2398 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
2399 return internal method without any ENGINE dependencies. Add new
2400 tiny fips sign and verify functions.
2403 *) New build option no-ec2m to disable characteristic 2 code.
2406 *) New build option "fipscanisteronly". This only builds fipscanister.o
2407 and (currently) associated fips utilities. Uses the file Makefile.fips
2408 instead of Makefile.org as the prototype.
2411 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
2412 Update fips_gcmtest to use IV generator.
2415 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
2416 setting output buffer to NULL. The *Final function must be
2417 called although it will not retrieve any additional data. The tag
2418 can be set or retrieved with a ctrl. The IV length is by default 12
2419 bytes (96 bits) but can be set to an alternative value. If the IV
2420 length exceeds the maximum IV length (currently 16 bytes) it cannot be
2424 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
2425 underlying do_cipher function handles all cipher semantics itself
2426 including padding and finalisation. This is useful if (for example)
2427 an ENGINE cipher handles block padding itself. The behaviour of
2428 do_cipher is subtly changed if this flag is set: the return value
2429 is the number of characters written to the output buffer (zero is
2430 no longer an error code) or a negative error code. Also if the
2431 input buffer is NULL and length 0 finalisation should be performed.
2434 *) If a candidate issuer certificate is already part of the constructed
2435 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
2438 *) Improve forward-security support: add functions
2440 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
2441 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
2443 for use by SSL/TLS servers; the callback function will be called whenever a
2444 new session is created, and gets to decide whether the session may be
2445 cached to make it resumable (return 0) or not (return 1). (As by the
2446 SSL/TLS protocol specifications, the session_id sent by the server will be
2447 empty to indicate that the session is not resumable; also, the server will
2448 not generate RFC 4507 (RFC 5077) session tickets.)
2450 A simple reasonable callback implementation is to return is_forward_secure.
2451 This parameter will be set to 1 or 0 depending on the ciphersuite selected
2452 by the SSL/TLS server library, indicating whether it can provide forward
2454 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2456 *) New -verify_name option in command line utilities to set verification
2460 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
2461 Add CMAC pkey methods.
2464 *) Experimental renegotiation in s_server -www mode. If the client
2465 browses /reneg connection is renegotiated. If /renegcert it is
2466 renegotiated requesting a certificate.
2469 *) Add an "external" session cache for debugging purposes to s_server. This
2470 should help trace issues which normally are only apparent in deployed
2471 multi-process servers.
2474 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
2475 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
2476 BIO_set_cipher() and some obscure PEM functions were changed so they
2477 can now return an error. The RAND changes required a change to the
2478 RAND_METHOD structure.
2481 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
2482 a gcc attribute to warn if the result of a function is ignored. This
2483 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
2484 whose return value is often ignored.
2487 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client.
2488 These allow SCTs (signed certificate timestamps) to be requested and
2489 validated when establishing a connection.
2490 [Rob Percival <robpercival@google.com>]
2492 Changes between 1.0.2g and 1.0.2h [3 May 2016]
2494 *) Prevent padding oracle in AES-NI CBC MAC check
2496 A MITM attacker can use a padding oracle attack to decrypt traffic
2497 when the connection uses an AES CBC cipher and the server support
2500 This issue was introduced as part of the fix for Lucky 13 padding
2501 attack (CVE-2013-0169). The padding check was rewritten to be in
2502 constant time by making sure that always the same bytes are read and
2503 compared against either the MAC or padding bytes. But it no longer
2504 checked that there was enough data to have both the MAC and padding
2507 This issue was reported by Juraj Somorovsky using TLS-Attacker.
2511 *) Fix EVP_EncodeUpdate overflow
2513 An overflow can occur in the EVP_EncodeUpdate() function which is used for
2514 Base64 encoding of binary data. If an attacker is able to supply very large
2515 amounts of input data then a length check can overflow resulting in a heap
2518 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
2519 the PEM_write_bio* family of functions. These are mainly used within the
2520 OpenSSL command line applications, so any application which processes data
2521 from an untrusted source and outputs it as a PEM file should be considered
2522 vulnerable to this issue. User applications that call these APIs directly
2523 with large amounts of untrusted data may also be vulnerable.
2525 This issue was reported by Guido Vranken.
2529 *) Fix EVP_EncryptUpdate overflow
2531 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
2532 is able to supply very large amounts of input data after a previous call to
2533 EVP_EncryptUpdate() with a partial block then a length check can overflow
2534 resulting in a heap corruption. Following an analysis of all OpenSSL
2535 internal usage of the EVP_EncryptUpdate() function all usage is one of two
2536 forms. The first form is where the EVP_EncryptUpdate() call is known to be
2537 the first called function after an EVP_EncryptInit(), and therefore that
2538 specific call must be safe. The second form is where the length passed to
2539 EVP_EncryptUpdate() can be seen from the code to be some small value and
2540 therefore there is no possibility of an overflow. Since all instances are
2541 one of these two forms, it is believed that there can be no overflows in
2542 internal code due to this problem. It should be noted that
2543 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
2544 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
2545 of these calls have also been analysed too and it is believed there are no
2546 instances in internal usage where an overflow could occur.
2548 This issue was reported by Guido Vranken.
2552 *) Prevent ASN.1 BIO excessive memory allocation
2554 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
2555 a short invalid encoding can cause allocation of large amounts of memory
2556 potentially consuming excessive resources or exhausting memory.
2558 Any application parsing untrusted data through d2i BIO functions is
2559 affected. The memory based functions such as d2i_X509() are *not* affected.
2560 Since the memory based functions are used by the TLS library, TLS
2561 applications are not affected.
2563 This issue was reported by Brian Carpenter.
2569 ASN1 Strings that are over 1024 bytes can cause an overread in applications
2570 using the X509_NAME_oneline() function on EBCDIC systems. This could result
2571 in arbitrary stack data being returned in the buffer.
2573 This issue was reported by Guido Vranken.
2577 *) Modify behavior of ALPN to invoke callback after SNI/servername
2578 callback, such that updates to the SSL_CTX affect ALPN.
2581 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
2585 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
2586 methods are enabled and ssl2 is disabled the methods return NULL.
2589 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
2591 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
2592 Builds that are not configured with "enable-weak-ssl-ciphers" will not
2593 provide any "EXPORT" or "LOW" strength ciphers.
2596 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
2597 is by default disabled at build-time. Builds that are not configured with
2598 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
2599 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
2600 will need to explicitly call either of:
2602 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
2604 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
2606 as appropriate. Even if either of those is used, or the application
2607 explicitly uses the version-specific SSLv2_method() or its client and
2608 server variants, SSLv2 ciphers vulnerable to exhaustive search key
2609 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
2610 ciphers, and SSLv2 56-bit DES are no longer available.
2614 *) Fix a double-free in DSA code
2616 A double free bug was discovered when OpenSSL parses malformed DSA private
2617 keys and could lead to a DoS attack or memory corruption for applications
2618 that receive DSA private keys from untrusted sources. This scenario is
2621 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
2626 *) Disable SRP fake user seed to address a server memory leak.
2628 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
2630 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
2631 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
2632 was changed to ignore the "fake user" SRP seed, even if the seed
2635 Users should use SRP_VBASE_get1_by_user instead. Note that in
2636 SRP_VBASE_get1_by_user, caller must free the returned value. Note
2637 also that even though configuring the SRP seed attempts to hide
2638 invalid usernames by continuing the handshake with fake
2639 credentials, this behaviour is not constant time and no strong
2640 guarantees are made that the handshake is indistinguishable from
2641 that of a valid user.
2645 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
2647 In the BN_hex2bn function the number of hex digits is calculated using an
2648 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
2649 large values of |i| this can result in |bn_expand| not allocating any
2650 memory because |i * 4| is negative. This can leave the internal BIGNUM data
2651 field as NULL leading to a subsequent NULL ptr deref. For very large values
2652 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
2653 In this case memory is allocated to the internal BIGNUM data field, but it
2654 is insufficiently sized leading to heap corruption. A similar issue exists
2655 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
2656 is ever called by user applications with very large untrusted hex/dec data.
2657 This is anticipated to be a rare occurrence.
2659 All OpenSSL internal usage of these functions use data that is not expected
2660 to be untrusted, e.g. config file data or application command line
2661 arguments. If user developed applications generate config file data based
2662 on untrusted data then it is possible that this could also lead to security
2663 consequences. This is also anticipated to be rare.
2665 This issue was reported to OpenSSL by Guido Vranken.
2669 *) Fix memory issues in BIO_*printf functions
2671 The internal |fmtstr| function used in processing a "%s" format string in
2672 the BIO_*printf functions could overflow while calculating the length of a
2673 string and cause an OOB read when printing very long strings.
2675 Additionally the internal |doapr_outch| function can attempt to write to an
2676 OOB memory location (at an offset from the NULL pointer) in the event of a
2677 memory allocation failure. In 1.0.2 and below this could be caused where
2678 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
2679 could be in processing a very long "%s" format string. Memory leaks can
2682 The first issue may mask the second issue dependent on compiler behaviour.
2683 These problems could enable attacks where large amounts of untrusted data
2684 is passed to the BIO_*printf functions. If applications use these functions
2685 in this way then they could be vulnerable. OpenSSL itself uses these
2686 functions when printing out human-readable dumps of ASN.1 data. Therefore
2687 applications that print this data could be vulnerable if the data is from
2688 untrusted sources. OpenSSL command line applications could also be
2689 vulnerable where they print out ASN.1 data, or if untrusted data is passed
2690 as command line arguments.
2692 Libssl is not considered directly vulnerable. Additionally certificates etc
2693 received via remote connections via libssl are also unlikely to be able to
2694 trigger these issues because of message size limits enforced within libssl.
2696 This issue was reported to OpenSSL Guido Vranken.
2700 *) Side channel attack on modular exponentiation
2702 A side-channel attack was found which makes use of cache-bank conflicts on
2703 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
2704 of RSA keys. The ability to exploit this issue is limited as it relies on
2705 an attacker who has control of code in a thread running on the same
2706 hyper-threaded core as the victim thread which is performing decryptions.
2708 This issue was reported to OpenSSL by Yuval Yarom, The University of
2709 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
2710 Nadia Heninger, University of Pennsylvania with more information at
2711 http://cachebleed.info.
2715 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
2716 if no keysize is specified with default_bits. This fixes an
2717 omission in an earlier change that changed all RSA/DSA key generation
2718 apps to use 2048 bits by default.
2721 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
2722 *) DH small subgroups
2724 Historically OpenSSL only ever generated DH parameters based on "safe"
2725 primes. More recently (in version 1.0.2) support was provided for
2726 generating X9.42 style parameter files such as those required for RFC 5114
2727 support. The primes used in such files may not be "safe". Where an
2728 application is using DH configured with parameters based on primes that are
2729 not "safe" then an attacker could use this fact to find a peer's private
2730 DH exponent. This attack requires that the attacker complete multiple
2731 handshakes in which the peer uses the same private DH exponent. For example
2732 this could be used to discover a TLS server's private DH exponent if it's
2733 reusing the private DH exponent or it's using a static DH ciphersuite.
2735 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
2736 TLS. It is not on by default. If the option is not set then the server
2737 reuses the same private DH exponent for the life of the server process and
2738 would be vulnerable to this attack. It is believed that many popular
2739 applications do set this option and would therefore not be at risk.
2741 The fix for this issue adds an additional check where a "q" parameter is
2742 available (as is the case in X9.42 based parameters). This detects the
2743 only known attack, and is the only possible defense for static DH
2744 ciphersuites. This could have some performance impact.
2746 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
2747 default and cannot be disabled. This could have some performance impact.
2749 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
2753 *) SSLv2 doesn't block disabled ciphers
2755 A malicious client can negotiate SSLv2 ciphers that have been disabled on
2756 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
2757 been disabled, provided that the SSLv2 protocol was not also disabled via
2760 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
2761 and Sebastian Schinzel.
2765 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
2767 *) BN_mod_exp may produce incorrect results on x86_64
2769 There is a carry propagating bug in the x86_64 Montgomery squaring
2770 procedure. No EC algorithms are affected. Analysis suggests that attacks
2771 against RSA and DSA as a result of this defect would be very difficult to
2772 perform and are not believed likely. Attacks against DH are considered just
2773 feasible (although very difficult) because most of the work necessary to
2774 deduce information about a private key may be performed offline. The amount
2775 of resources required for such an attack would be very significant and
2776 likely only accessible to a limited number of attackers. An attacker would
2777 additionally need online access to an unpatched system using the target
2778 private key in a scenario with persistent DH parameters and a private
2779 key that is shared between multiple clients. For example this can occur by
2780 default in OpenSSL DHE based SSL/TLS ciphersuites.
2782 This issue was reported to OpenSSL by Hanno Böck.
2786 *) Certificate verify crash with missing PSS parameter
2788 The signature verification routines will crash with a NULL pointer
2789 dereference if presented with an ASN.1 signature using the RSA PSS
2790 algorithm and absent mask generation function parameter. Since these
2791 routines are used to verify certificate signature algorithms this can be
2792 used to crash any certificate verification operation and exploited in a
2793 DoS attack. Any application which performs certificate verification is
2794 vulnerable including OpenSSL clients and servers which enable client
2797 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
2801 *) X509_ATTRIBUTE memory leak
2803 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
2804 memory. This structure is used by the PKCS#7 and CMS routines so any
2805 application which reads PKCS#7 or CMS data from untrusted sources is
2806 affected. SSL/TLS is not affected.
2808 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
2813 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
2814 This changes the decoding behaviour for some invalid messages,
2815 though the change is mostly in the more lenient direction, and
2816 legacy behaviour is preserved as much as possible.
2819 *) In DSA_generate_parameters_ex, if the provided seed is too short,
2821 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
2823 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
2825 *) Alternate chains certificate forgery
2827 During certificate verification, OpenSSL will attempt to find an
2828 alternative certificate chain if the first attempt to build such a chain
2829 fails. An error in the implementation of this logic can mean that an
2830 attacker could cause certain checks on untrusted certificates to be
2831 bypassed, such as the CA flag, enabling them to use a valid leaf
2832 certificate to act as a CA and "issue" an invalid certificate.
2834 This issue was reported to OpenSSL by Adam Langley/David Benjamin
2838 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
2840 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
2841 incompatibility in the handling of HMAC. The previous ABI has now been
2845 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
2847 *) Malformed ECParameters causes infinite loop
2849 When processing an ECParameters structure OpenSSL enters an infinite loop
2850 if the curve specified is over a specially malformed binary polynomial
2853 This can be used to perform denial of service against any
2854 system which processes public keys, certificate requests or
2855 certificates. This includes TLS clients and TLS servers with
2856 client authentication enabled.
2858 This issue was reported to OpenSSL by Joseph Barr-Pixton.
2862 *) Exploitable out-of-bounds read in X509_cmp_time
2864 X509_cmp_time does not properly check the length of the ASN1_TIME
2865 string and can read a few bytes out of bounds. In addition,
2866 X509_cmp_time accepts an arbitrary number of fractional seconds in the
2869 An attacker can use this to craft malformed certificates and CRLs of
2870 various sizes and potentially cause a segmentation fault, resulting in
2871 a DoS on applications that verify certificates or CRLs. TLS clients
2872 that verify CRLs are affected. TLS clients and servers with client
2873 authentication enabled may be affected if they use custom verification
2876 This issue was reported to OpenSSL by Robert Swiecki (Google), and
2877 independently by Hanno Böck.
2881 *) PKCS7 crash with missing EnvelopedContent
2883 The PKCS#7 parsing code does not handle missing inner EncryptedContent
2884 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
2885 with missing content and trigger a NULL pointer dereference on parsing.
2887 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
2888 structures from untrusted sources are affected. OpenSSL clients and
2889 servers are not affected.
2891 This issue was reported to OpenSSL by Michal Zalewski (Google).
2895 *) CMS verify infinite loop with unknown hash function
2897 When verifying a signedData message the CMS code can enter an infinite loop
2898 if presented with an unknown hash function OID. This can be used to perform
2899 denial of service against any system which verifies signedData messages using
2901 This issue was reported to OpenSSL by Johannes Bauer.
2905 *) Race condition handling NewSessionTicket
2907 If a NewSessionTicket is received by a multi-threaded client when attempting to
2908 reuse a previous ticket then a race condition can occur potentially leading to
2909 a double free of the ticket data.
2913 *) Only support 256-bit or stronger elliptic curves with the
2914 'ecdh_auto' setting (server) or by default (client). Of supported
2915 curves, prefer P-256 (both).
2918 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
2920 *) ClientHello sigalgs DoS fix
2922 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
2923 invalid signature algorithms extension a NULL pointer dereference will
2924 occur. This can be exploited in a DoS attack against the server.
2926 This issue was was reported to OpenSSL by David Ramos of Stanford
2929 [Stephen Henson and Matt Caswell]
2931 *) Multiblock corrupted pointer fix
2933 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
2934 feature only applies on 64 bit x86 architecture platforms that support AES
2935 NI instructions. A defect in the implementation of "multiblock" can cause
2936 OpenSSL's internal write buffer to become incorrectly set to NULL when
2937 using non-blocking IO. Typically, when the user application is using a
2938 socket BIO for writing, this will only result in a failed connection.
2939 However if some other BIO is used then it is likely that a segmentation
2940 fault will be triggered, thus enabling a potential DoS attack.
2942 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
2946 *) Segmentation fault in DTLSv1_listen fix
2948 The DTLSv1_listen function is intended to be stateless and processes the
2949 initial ClientHello from many peers. It is common for user code to loop
2950 over the call to DTLSv1_listen until a valid ClientHello is received with
2951 an associated cookie. A defect in the implementation of DTLSv1_listen means
2952 that state is preserved in the SSL object from one invocation to the next
2953 that can lead to a segmentation fault. Errors processing the initial
2954 ClientHello can trigger this scenario. An example of such an error could be
2955 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
2958 This issue was reported to OpenSSL by Per Allansson.
2962 *) Segmentation fault in ASN1_TYPE_cmp fix
2964 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
2965 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
2966 certificate signature algorithm consistency this can be used to crash any
2967 certificate verification operation and exploited in a DoS attack. Any
2968 application which performs certificate verification is vulnerable including
2969 OpenSSL clients and servers which enable client authentication.
2973 *) Segmentation fault for invalid PSS parameters fix
2975 The signature verification routines will crash with a NULL pointer
2976 dereference if presented with an ASN.1 signature using the RSA PSS
2977 algorithm and invalid parameters. Since these routines are used to verify
2978 certificate signature algorithms this can be used to crash any
2979 certificate verification operation and exploited in a DoS attack. Any
2980 application which performs certificate verification is vulnerable including
2981 OpenSSL clients and servers which enable client authentication.
2983 This issue was was reported to OpenSSL by Brian Carpenter.
2987 *) ASN.1 structure reuse memory corruption fix
2989 Reusing a structure in ASN.1 parsing may allow an attacker to cause
2990 memory corruption via an invalid write. Such reuse is and has been
2991 strongly discouraged and is believed to be rare.
2993 Applications that parse structures containing CHOICE or ANY DEFINED BY
2994 components may be affected. Certificate parsing (d2i_X509 and related
2995 functions) are however not affected. OpenSSL clients and servers are
3000 *) PKCS7 NULL pointer dereferences fix
3002 The PKCS#7 parsing code does not handle missing outer ContentInfo
3003 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
3004 missing content and trigger a NULL pointer dereference on parsing.
3006 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
3007 otherwise parse PKCS#7 structures from untrusted sources are
3008 affected. OpenSSL clients and servers are not affected.
3010 This issue was reported to OpenSSL by Michal Zalewski (Google).
3014 *) DoS via reachable assert in SSLv2 servers fix
3016 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
3017 servers that both support SSLv2 and enable export cipher suites by sending
3018 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
3020 This issue was discovered by Sean Burford (Google) and Emilia Käsper
3021 (OpenSSL development team).
3025 *) Empty CKE with client auth and DHE fix
3027 If client auth is used then a server can seg fault in the event of a DHE
3028 ciphersuite being selected and a zero length ClientKeyExchange message
3029 being sent by the client. This could be exploited in a DoS attack.
3033 *) Handshake with unseeded PRNG fix
3035 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
3036 with an unseeded PRNG. The conditions are:
3037 - The client is on a platform where the PRNG has not been seeded
3038 automatically, and the user has not seeded manually
3039 - A protocol specific client method version has been used (i.e. not
3040 SSL_client_methodv23)
3041 - A ciphersuite is used that does not require additional random data from
3042 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
3044 If the handshake succeeds then the client random that has been used will
3045 have been generated from a PRNG with insufficient entropy and therefore the
3046 output may be predictable.
3048 For example using the following command with an unseeded openssl will
3049 succeed on an unpatched platform:
3051 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
3055 *) Use After Free following d2i_ECPrivatekey error fix
3057 A malformed EC private key file consumed via the d2i_ECPrivateKey function
3058 could cause a use after free condition. This, in turn, could cause a double
3059 free in several private key parsing functions (such as d2i_PrivateKey
3060 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
3061 for applications that receive EC private keys from untrusted
3062 sources. This scenario is considered rare.
3064 This issue was discovered by the BoringSSL project and fixed in their
3069 *) X509_to_X509_REQ NULL pointer deref fix
3071 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
3072 the certificate key is invalid. This function is rarely used in practice.
3074 This issue was discovered by Brian Carpenter.
3078 *) Removed the export ciphers from the DEFAULT ciphers
3081 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
3083 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
3084 ARMv5 through ARMv8, as opposite to "locking" it to single one.
3085 So far those who have to target multiple platforms would compromise
3086 and argue that binary targeting say ARMv5 would still execute on
3087 ARMv8. "Universal" build resolves this compromise by providing
3088 near-optimal performance even on newer platforms.
3091 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
3092 (other platforms pending).
3093 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
3095 *) Add support for the SignedCertificateTimestampList certificate and
3096 OCSP response extensions from RFC6962.
3099 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3100 for corner cases. (Certain input points at infinity could lead to
3101 bogus results, with non-infinity inputs mapped to infinity too.)
3104 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
3105 This covers AES, SHA256/512 and GHASH. "Initial" means that most
3106 common cases are optimized and there still is room for further
3107 improvements. Vector Permutation AES for Altivec is also added.
3110 *) Add support for little-endian ppc64 Linux target.
3111 [Marcelo Cerri (IBM)]
3113 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
3114 SHA1, SHA256 and GHASH. "Initial" means that most common cases
3115 are optimized and there still is room for further improvements.
3116 Both 32- and 64-bit modes are supported.
3117 [Andy Polyakov, Ard Biesheuvel (Linaro)]
3119 *) Improved ARMv7 NEON support.
3122 *) Support for SPARC Architecture 2011 crypto extensions, first
3123 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
3124 SHA256/512, MD5, GHASH and modular exponentiation.
3125 [Andy Polyakov, David Miller]
3127 *) Accelerated modular exponentiation for Intel processors, a.k.a.
3129 [Shay Gueron & Vlad Krasnov (Intel Corp)]
3131 *) Support for new and upcoming Intel processors, including AVX2,
3132 BMI and SHA ISA extensions. This includes additional "stitched"
3133 implementations, AESNI-SHA256 and GCM, and multi-buffer support
3136 This work was sponsored by Intel Corp.
3139 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
3140 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
3141 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
3144 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
3145 this fixes a limitation in previous versions of OpenSSL.
3148 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
3149 MGF1 digest and OAEP label.
3152 *) Add EVP support for key wrapping algorithms, to avoid problems with
3153 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
3154 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
3155 algorithms and include tests cases.
3158 *) Add functions to allocate and set the fields of an ECDSA_METHOD
3160 [Douglas E. Engert, Steve Henson]
3162 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
3163 difference in days and seconds between two tm or ASN1_TIME structures.
3166 *) Add -rev test option to s_server to just reverse order of characters
3167 received by client and send back to server. Also prints an abbreviated
3168 summary of the connection parameters.
3171 *) New option -brief for s_client and s_server to print out a brief summary
3172 of connection parameters.
3175 *) Add callbacks for arbitrary TLS extensions.
3176 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
3178 *) New option -crl_download in several openssl utilities to download CRLs
3179 from CRLDP extension in certificates.
3182 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
3185 *) New function X509_CRL_diff to generate a delta CRL from the difference
3186 of two full CRLs. Add support to "crl" utility.
3189 *) New functions to set lookup_crls function and to retrieve
3190 X509_STORE from X509_STORE_CTX.
3193 *) Print out deprecated issuer and subject unique ID fields in
3197 *) Extend OCSP I/O functions so they can be used for simple general purpose
3198 HTTP as well as OCSP. New wrapper function which can be used to download
3199 CRLs using the OCSP API.
3202 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
3205 *) SSL_CONF* functions. These provide a common framework for application
3206 configuration using configuration files or command lines.
3209 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
3210 message callback and prints the results. Needs compile time option
3211 "enable-ssl-trace". New options to s_client and s_server to enable
3215 *) New ctrl and macro to retrieve supported points extensions.
3216 Print out extension in s_server and s_client.
3219 *) New functions to retrieve certificate signature and signature
3223 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
3227 *) New Suite B modes for TLS code. These use and enforce the requirements
3228 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
3229 only use Suite B curves. The Suite B modes can be set by using the
3230 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
3233 *) New chain verification flags for Suite B levels of security. Check
3234 algorithms are acceptable when flags are set in X509_verify_cert.
3237 *) Make tls1_check_chain return a set of flags indicating checks passed
3238 by a certificate chain. Add additional tests to handle client
3239 certificates: checks for matching certificate type and issuer name
3243 *) If an attempt is made to use a signature algorithm not in the peer
3244 preference list abort the handshake. If client has no suitable
3245 signature algorithms in response to a certificate request do not
3246 use the certificate.
3249 *) If server EC tmp key is not in client preference list abort handshake.
3252 *) Add support for certificate stores in CERT structure. This makes it
3253 possible to have different stores per SSL structure or one store in
3254 the parent SSL_CTX. Include distinct stores for certificate chain
3255 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
3256 to build and store a certificate chain in CERT structure: returning
3257 an error if the chain cannot be built: this will allow applications
3258 to test if a chain is correctly configured.
3260 Note: if the CERT based stores are not set then the parent SSL_CTX
3261 store is used to retain compatibility with existing behaviour.
3265 *) New function ssl_set_client_disabled to set a ciphersuite disabled
3266 mask based on the current session, check mask when sending client
3267 hello and checking the requested ciphersuite.
3270 *) New ctrls to retrieve and set certificate types in a certificate
3271 request message. Print out received values in s_client. If certificate
3272 types is not set with custom values set sensible values based on
3273 supported signature algorithms.
3276 *) Support for distinct client and server supported signature algorithms.
3279 *) Add certificate callback. If set this is called whenever a certificate
3280 is required by client or server. An application can decide which
3281 certificate chain to present based on arbitrary criteria: for example
3282 supported signature algorithms. Add very simple example to s_server.
3283 This fixes many of the problems and restrictions of the existing client
3284 certificate callback: for example you can now clear an existing
3285 certificate and specify the whole chain.
3288 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
3289 the certificate can be used for (if anything). Set valid_flags field
3290 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
3291 to have similar checks in it.
3293 Add new "cert_flags" field to CERT structure and include a "strict mode".
3294 This enforces some TLS certificate requirements (such as only permitting
3295 certificate signature algorithms contained in the supported algorithms
3296 extension) which some implementations ignore: this option should be used
3297 with caution as it could cause interoperability issues.
3300 *) Update and tidy signature algorithm extension processing. Work out
3301 shared signature algorithms based on preferences and peer algorithms
3302 and print them out in s_client and s_server. Abort handshake if no
3303 shared signature algorithms.
3306 *) Add new functions to allow customised supported signature algorithms
3307 for SSL and SSL_CTX structures. Add options to s_client and s_server
3311 *) New function SSL_certs_clear() to delete all references to certificates
3312 from an SSL structure. Before this once a certificate had been added
3313 it couldn't be removed.
3316 *) Integrate hostname, email address and IP address checking with certificate
3317 verification. New verify options supporting checking in openssl utility.
3320 *) Fixes and wildcard matching support to hostname and email checking
3321 functions. Add manual page.
3322 [Florian Weimer (Red Hat Product Security Team)]
3324 *) New functions to check a hostname email or IP address against a
3325 certificate. Add options x509 utility to print results of checks against
3329 *) Fix OCSP checking.
3330 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
3332 *) Initial experimental support for explicitly trusted non-root CAs.
3333 OpenSSL still tries to build a complete chain to a root but if an
3334 intermediate CA has a trust setting included that is used. The first
3335 setting is used: whether to trust (e.g., -addtrust option to the x509
3339 *) Add -trusted_first option which attempts to find certificates in the
3340 trusted store even if an untrusted chain is also supplied.
3343 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
3344 platform support for Linux and Android.
3347 *) Support for linux-x32, ILP32 environment in x86_64 framework.
3350 *) Experimental multi-implementation support for FIPS capable OpenSSL.
3351 When in FIPS mode the approved implementations are used as normal,
3352 when not in FIPS mode the internal unapproved versions are used instead.
3353 This means that the FIPS capable OpenSSL isn't forced to use the
3354 (often lower performance) FIPS implementations outside FIPS mode.
3357 *) Transparently support X9.42 DH parameters when calling
3358 PEM_read_bio_DHparameters. This means existing applications can handle
3359 the new parameter format automatically.
3362 *) Initial experimental support for X9.42 DH parameter format: mainly
3363 to support use of 'q' parameter for RFC5114 parameters.
3366 *) Add DH parameters from RFC5114 including test data to dhtest.
3369 *) Support for automatic EC temporary key parameter selection. If enabled
3370 the most preferred EC parameters are automatically used instead of
3371 hardcoded fixed parameters. Now a server just has to call:
3372 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
3373 support ECDH and use the most appropriate parameters.
3376 *) Enhance and tidy EC curve and point format TLS extension code. Use
3377 static structures instead of allocation if default values are used.
3378 New ctrls to set curves we wish to support and to retrieve shared curves.
3379 Print out shared curves in s_server. New options to s_server and s_client
3380 to set list of supported curves.
3383 *) New ctrls to retrieve supported signature algorithms and
3384 supported curve values as an array of NIDs. Extend openssl utility
3385 to print out received values.
3388 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
3389 between NIDs and the more common NIST names such as "P-256". Enhance
3390 ecparam utility and ECC method to recognise the NIST names for curves.
3393 *) Enhance SSL/TLS certificate chain handling to support different
3394 chains for each certificate instead of one chain in the parent SSL_CTX.
3397 *) Support for fixed DH ciphersuite client authentication: where both
3398 server and client use DH certificates with common parameters.
3401 *) Support for fixed DH ciphersuites: those requiring DH server
3405 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
3407 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
3408 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
3409 X509_CINF_get_signature were reverted post internal team review.
3411 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
3413 *) Build fixes for the Windows and OpenVMS platforms
3414 [Matt Caswell and Richard Levitte]
3416 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
3418 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
3419 message can cause a segmentation fault in OpenSSL due to a NULL pointer
3420 dereference. This could lead to a Denial Of Service attack. Thanks to
3421 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
3425 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
3426 dtls1_buffer_record function under certain conditions. In particular this
3427 could occur if an attacker sent repeated DTLS records with the same
3428 sequence number but for the next epoch. The memory leak could be exploited
3429 by an attacker in a Denial of Service attack through memory exhaustion.
3430 Thanks to Chris Mueller for reporting this issue.
3434 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
3435 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
3436 method would be set to NULL which could later result in a NULL pointer
3437 dereference. Thanks to Frank Schmirler for reporting this issue.
3441 *) Abort handshake if server key exchange message is omitted for ephemeral
3444 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
3445 reporting this issue.
3449 *) Remove non-export ephemeral RSA code on client and server. This code
3450 violated the TLS standard by allowing the use of temporary RSA keys in
3451 non-export ciphersuites and could be used by a server to effectively
3452 downgrade the RSA key length used to a value smaller than the server
3453 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
3454 INRIA or reporting this issue.
3458 *) Fixed issue where DH client certificates are accepted without verification.
3459 An OpenSSL server will accept a DH certificate for client authentication
3460 without the certificate verify message. This effectively allows a client to
3461 authenticate without the use of a private key. This only affects servers
3462 which trust a client certificate authority which issues certificates
3463 containing DH keys: these are extremely rare and hardly ever encountered.
3464 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
3469 *) Ensure that the session ID context of an SSL is updated when its
3470 SSL_CTX is updated via SSL_set_SSL_CTX.
3472 The session ID context is typically set from the parent SSL_CTX,
3473 and can vary with the CTX.
3476 *) Fix various certificate fingerprint issues.
3478 By using non-DER or invalid encodings outside the signed portion of a
3479 certificate the fingerprint can be changed without breaking the signature.
3480 Although no details of the signed portion of the certificate can be changed
3481 this can cause problems with some applications: e.g. those using the
3482 certificate fingerprint for blacklists.
3484 1. Reject signatures with non zero unused bits.
3486 If the BIT STRING containing the signature has non zero unused bits reject
3487 the signature. All current signature algorithms require zero unused bits.
3489 2. Check certificate algorithm consistency.
3491 Check the AlgorithmIdentifier inside TBS matches the one in the
3492 certificate signature. NB: this will result in signature failure
3493 errors for some broken certificates.
3495 Thanks to Konrad Kraszewski from Google for reporting this issue.
3497 3. Check DSA/ECDSA signatures use DER.
3499 Re-encode DSA/ECDSA signatures and compare with the original received
3500 signature. Return an error if there is a mismatch.
3502 This will reject various cases including garbage after signature
3503 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
3504 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
3505 (negative or with leading zeroes).
3507 Further analysis was conducted and fixes were developed by Stephen Henson
3508 of the OpenSSL core team.
3513 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
3514 results on some platforms, including x86_64. This bug occurs at random
3515 with a very low probability, and is not known to be exploitable in any
3516 way, though its exact impact is difficult to determine. Thanks to Pieter
3517 Wuille (Blockstream) who reported this issue and also suggested an initial
3518 fix. Further analysis was conducted by the OpenSSL development team and
3519 Adam Langley of Google. The final fix was developed by Andy Polyakov of
3520 the OpenSSL core team.
3524 *) Do not resume sessions on the server if the negotiated protocol
3525 version does not match the session's version. Resuming with a different
3526 version, while not strictly forbidden by the RFC, is of questionable
3527 sanity and breaks all known clients.
3528 [David Benjamin, Emilia Käsper]
3530 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
3531 early CCS messages during renegotiation. (Note that because
3532 renegotiation is encrypted, this early CCS was not exploitable.)
3535 *) Tighten client-side session ticket handling during renegotiation:
3536 ensure that the client only accepts a session ticket if the server sends
3537 the extension anew in the ServerHello. Previously, a TLS client would
3538 reuse the old extension state and thus accept a session ticket if one was
3539 announced in the initial ServerHello.
3541 Similarly, ensure that the client requires a session ticket if one
3542 was advertised in the ServerHello. Previously, a TLS client would
3543 ignore a missing NewSessionTicket message.
3546 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
3548 *) SRTP Memory Leak.
3550 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
3551 sends a carefully crafted handshake message, to cause OpenSSL to fail
3552 to free up to 64k of memory causing a memory leak. This could be
3553 exploited in a Denial Of Service attack. This issue affects OpenSSL
3554 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
3555 whether SRTP is used or configured. Implementations of OpenSSL that
3556 have been compiled with OPENSSL_NO_SRTP defined are not affected.
3558 The fix was developed by the OpenSSL team.
3562 *) Session Ticket Memory Leak.
3564 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
3565 integrity of that ticket is first verified. In the event of a session
3566 ticket integrity check failing, OpenSSL will fail to free memory
3567 causing a memory leak. By sending a large number of invalid session
3568 tickets an attacker could exploit this issue in a Denial Of Service
3573 *) Build option no-ssl3 is incomplete.
3575 When OpenSSL is configured with "no-ssl3" as a build option, servers
3576 could accept and complete a SSL 3.0 handshake, and clients could be
3577 configured to send them.
3579 [Akamai and the OpenSSL team]
3581 *) Add support for TLS_FALLBACK_SCSV.
3582 Client applications doing fallback retries should call
3583 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
3585 [Adam Langley, Bodo Moeller]
3587 *) Add additional DigestInfo checks.
3589 Re-encode DigestInto in DER and check against the original when
3590 verifying RSA signature: this will reject any improperly encoded
3591 DigestInfo structures.
3593 Note: this is a precautionary measure and no attacks are currently known.
3597 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
3599 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
3600 SRP code can be overrun an internal buffer. Add sanity check that
3601 g, A, B < N to SRP code.
3603 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
3604 Group for discovering this issue.
3608 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
3609 TLS 1.0 instead of higher protocol versions when the ClientHello message
3610 is badly fragmented. This allows a man-in-the-middle attacker to force a
3611 downgrade to TLS 1.0 even if both the server and the client support a
3612 higher protocol version, by modifying the client's TLS records.
3614 Thanks to David Benjamin and Adam Langley (Google) for discovering and
3615 researching this issue.
3619 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
3620 to a denial of service attack. A malicious server can crash the client
3621 with a null pointer dereference (read) by specifying an anonymous (EC)DH
3622 ciphersuite and sending carefully crafted handshake messages.
3624 Thanks to Felix Gröbert (Google) for discovering and researching this
3629 *) By sending carefully crafted DTLS packets an attacker could cause openssl
3630 to leak memory. This can be exploited through a Denial of Service attack.
3631 Thanks to Adam Langley for discovering and researching this issue.
3635 *) An attacker can force openssl to consume large amounts of memory whilst
3636 processing DTLS handshake messages. This can be exploited through a
3637 Denial of Service attack.
3638 Thanks to Adam Langley for discovering and researching this issue.
3642 *) An attacker can force an error condition which causes openssl to crash
3643 whilst processing DTLS packets due to memory being freed twice. This
3644 can be exploited through a Denial of Service attack.
3645 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
3650 *) If a multithreaded client connects to a malicious server using a resumed
3651 session and the server sends an ec point format extension it could write
3652 up to 255 bytes to freed memory.
3654 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
3659 *) A malicious server can crash an OpenSSL client with a null pointer
3660 dereference (read) by specifying an SRP ciphersuite even though it was not
3661 properly negotiated with the client. This can be exploited through a
3662 Denial of Service attack.
3664 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
3665 discovering and researching this issue.
3669 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
3670 X509_name_oneline, X509_name_print_ex et al. to leak some information
3671 from the stack. Applications may be affected if they echo pretty printing
3672 output to the attacker.
3674 Thanks to Ivan Fratric (Google) for discovering this issue.
3676 [Emilia Käsper, and Steve Henson]
3678 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3679 for corner cases. (Certain input points at infinity could lead to
3680 bogus results, with non-infinity inputs mapped to infinity too.)
3683 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
3685 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
3686 handshake can force the use of weak keying material in OpenSSL
3687 SSL/TLS clients and servers.
3689 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
3690 researching this issue. (CVE-2014-0224)
3691 [KIKUCHI Masashi, Steve Henson]
3693 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
3694 OpenSSL DTLS client the code can be made to recurse eventually crashing
3697 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
3699 [Imre Rad, Steve Henson]
3701 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
3702 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
3703 client or server. This is potentially exploitable to run arbitrary
3704 code on a vulnerable client or server.
3706 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
3707 [Jüri Aedla, Steve Henson]
3709 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
3710 are subject to a denial of service attack.
3712 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
3713 this issue. (CVE-2014-3470)
3714 [Felix Gröbert, Ivan Fratric, Steve Henson]
3716 *) Harmonize version and its documentation. -f flag is used to display
3718 [mancha <mancha1@zoho.com>]
3720 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
3721 in i2d_ECPrivateKey.
3722 [mancha <mancha1@zoho.com>]
3724 *) Fix some double frees. These are not thought to be exploitable.
3725 [mancha <mancha1@zoho.com>]
3727 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
3729 *) A missing bounds check in the handling of the TLS heartbeat extension
3730 can be used to reveal up to 64k of memory to a connected client or
3733 Thanks for Neel Mehta of Google Security for discovering this bug and to
3734 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
3735 preparing the fix (CVE-2014-0160)
3736 [Adam Langley, Bodo Moeller]
3738 *) Fix for the attack described in the paper "Recovering OpenSSL
3739 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
3740 by Yuval Yarom and Naomi Benger. Details can be obtained from:
3741 http://eprint.iacr.org/2014/140
3743 Thanks to Yuval Yarom and Naomi Benger for discovering this
3744 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
3745 [Yuval Yarom and Naomi Benger]
3747 *) TLS pad extension: draft-agl-tls-padding-03
3749 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
3750 TLS client Hello record length value would otherwise be > 255 and
3751 less that 512 pad with a dummy extension containing zeroes so it
3752 is at least 512 bytes long.
3754 [Adam Langley, Steve Henson]
3756 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
3758 *) Fix for TLS record tampering bug. A carefully crafted invalid
3759 handshake could crash OpenSSL with a NULL pointer exception.
3760 Thanks to Anton Johansson for reporting this issues.
3763 *) Keep original DTLS digest and encryption contexts in retransmission
3764 structures so we can use the previous session parameters if they need
3765 to be resent. (CVE-2013-6450)
3768 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
3769 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
3770 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
3771 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
3772 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
3773 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
3774 [Rob Stradling, Adam Langley]
3776 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
3778 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
3779 supporting platforms or when small records were transferred.
3780 [Andy Polyakov, Steve Henson]
3782 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
3784 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
3786 This addresses the flaw in CBC record processing discovered by
3787 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
3788 at: http://www.isg.rhul.ac.uk/tls/
3790 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
3791 Security Group at Royal Holloway, University of London
3792 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
3793 Emilia Käsper for the initial patch.
3795 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
3797 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
3798 ciphersuites which can be exploited in a denial of service attack.
3799 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
3800 and detecting this bug and to Wolfgang Ettlinger
3801 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
3805 *) Return an error when checking OCSP signatures when key is NULL.
3806 This fixes a DoS attack. (CVE-2013-0166)
3809 *) Make openssl verify return errors.
3810 [Chris Palmer <palmer@google.com> and Ben Laurie]
3812 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
3813 the right response is stapled. Also change SSL_get_certificate()
3814 so it returns the certificate actually sent.
3815 See http://rt.openssl.org/Ticket/Display.html?id=2836.
3816 [Rob Stradling <rob.stradling@comodo.com>]
3818 *) Fix possible deadlock when decoding public keys.
3821 *) Don't use TLS 1.0 record version number in initial client hello
3825 Changes between 1.0.1b and 1.0.1c [10 May 2012]
3827 *) Sanity check record length before skipping explicit IV in TLS
3828 1.2, 1.1 and DTLS to fix DoS attack.
3830 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
3831 fuzzing as a service testing platform.
3835 *) Initialise tkeylen properly when encrypting CMS messages.
3836 Thanks to Solar Designer of Openwall for reporting this issue.
3839 *) In FIPS mode don't try to use composite ciphers as they are not
3843 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
3845 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
3846 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
3847 mean any application compiled against OpenSSL 1.0.0 headers setting
3848 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling
3849 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
3850 0x10000000L Any application which was previously compiled against
3851 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
3852 will need to be recompiled as a result. Letting be results in
3853 inability to disable specifically TLS 1.1 and in client context,
3854 in unlike event, limit maximum offered version to TLS 1.0 [see below].
3857 *) In order to ensure interoperability SSL_OP_NO_protocolX does not
3858 disable just protocol X, but all protocols above X *if* there are
3859 protocols *below* X still enabled. In more practical terms it means
3860 that if application wants to disable TLS1.0 in favor of TLS1.1 and
3861 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
3862 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
3866 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
3868 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
3869 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
3870 in CRYPTO_realloc_clean.
3872 Thanks to Tavis Ormandy, Google Security Team, for discovering this
3873 issue and to Adam Langley <agl@chromium.org> for fixing it.
3875 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
3877 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
3880 *) Workarounds for some broken servers that "hang" if a client hello
3881 record length exceeds 255 bytes.
3883 1. Do not use record version number > TLS 1.0 in initial client
3884 hello: some (but not all) hanging servers will now work.
3885 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
3886 the number of ciphers sent in the client hello. This should be
3887 set to an even number, such as 50, for example by passing:
3888 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
3889 Most broken servers should now work.
3890 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
3891 TLS 1.2 client support entirely.
3894 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
3897 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
3899 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
3900 STRING form instead of a DigestInfo.
3903 *) The format used for MDC2 RSA signatures is inconsistent between EVP
3904 and the RSA_sign/RSA_verify functions. This was made more apparent when
3905 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
3906 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
3907 the correct format in RSA_verify so both forms transparently work.
3910 *) Some servers which support TLS 1.0 can choke if we initially indicate
3911 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
3912 encrypted premaster secret. As a workaround use the maximum permitted
3913 client version in client hello, this should keep such servers happy
3914 and still work with previous versions of OpenSSL.
3917 *) Add support for TLS/DTLS heartbeats.
3918 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3920 *) Add support for SCTP.
3921 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3923 *) Improved PRNG seeding for VOS.
3924 [Paul Green <Paul.Green@stratus.com>]
3926 *) Extensive assembler packs updates, most notably:
3928 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
3929 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
3930 - x86_64: bit-sliced AES implementation;
3931 - ARM: NEON support, contemporary platforms optimizations;
3932 - s390x: z196 support;
3933 - *: GHASH and GF(2^m) multiplication implementations;
3937 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
3938 (removal of unnecessary code)
3939 [Peter Sylvester <peter.sylvester@edelweb.fr>]
3941 *) Add TLS key material exporter from RFC 5705.
3944 *) Add DTLS-SRTP negotiation from RFC 5764.
3947 *) Add Next Protocol Negotiation,
3948 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
3949 disabled with a no-npn flag to config or Configure. Code donated
3951 [Adam Langley <agl@google.com> and Ben Laurie]
3953 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
3954 NIST-P256, NIST-P521, with constant-time single point multiplication on
3955 typical inputs. Compiler support for the nonstandard type __uint128_t is
3956 required to use this (present in gcc 4.4 and later, for 64-bit builds).
3957 Code made available under Apache License version 2.0.
3959 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
3960 line to include this in your build of OpenSSL, and run "make depend" (or
3961 "make update"). This enables the following EC_METHODs:
3963 EC_GFp_nistp224_method()
3964 EC_GFp_nistp256_method()
3965 EC_GFp_nistp521_method()
3967 EC_GROUP_new_by_curve_name() will automatically use these (while
3968 EC_GROUP_new_curve_GFp() currently prefers the more flexible
3970 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
3972 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
3973 all platforms. Move ssize_t definition from e_os.h to the public
3974 header file e_os2.h as it now appears in public header file cms.h
3977 *) New -sigopt option to the ca, req and x509 utilities. Additional
3978 signature parameters can be passed using this option and in
3982 *) Add RSA PSS signing function. This will generate and set the
3983 appropriate AlgorithmIdentifiers for PSS based on those in the
3984 corresponding EVP_MD_CTX structure. No application support yet.
3987 *) Support for companion algorithm specific ASN1 signing routines.
3988 New function ASN1_item_sign_ctx() signs a pre-initialised
3989 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
3990 the appropriate parameters.
3993 *) Add new algorithm specific ASN1 verification initialisation function
3994 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
3995 handling will be the same no matter what EVP_PKEY_METHOD is used.
3996 Add a PSS handler to support verification of PSS signatures: checked
3997 against a number of sample certificates.
4000 *) Add signature printing for PSS. Add PSS OIDs.
4001 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
4003 *) Add algorithm specific signature printing. An individual ASN1 method
4004 can now print out signatures instead of the standard hex dump.
4006 More complex signatures (e.g. PSS) can print out more meaningful
4007 information. Include DSA version that prints out the signature
4011 *) Password based recipient info support for CMS library: implementing
4015 *) Split password based encryption into PBES2 and PBKDF2 functions. This
4016 neatly separates the code into cipher and PBE sections and is required
4017 for some algorithms that split PBES2 into separate pieces (such as
4018 password based CMS).
4021 *) Session-handling fixes:
4022 - Fix handling of connections that are resuming with a session ID,
4023 but also support Session Tickets.
4024 - Fix a bug that suppressed issuing of a new ticket if the client
4025 presented a ticket with an expired session.
4026 - Try to set the ticket lifetime hint to something reasonable.
4027 - Make tickets shorter by excluding irrelevant information.
4028 - On the client side, don't ignore renewed tickets.
4029 [Adam Langley, Bodo Moeller (Google)]
4031 *) Fix PSK session representation.
4034 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
4036 This work was sponsored by Intel.
4039 *) Add GCM support to TLS library. Some custom code is needed to split
4040 the IV between the fixed (from PRF) and explicit (from TLS record)
4041 portions. This adds all GCM ciphersuites supported by RFC5288 and
4042 RFC5289. Generalise some AES* cipherstrings to include GCM and
4043 add a special AESGCM string for GCM only.
4046 *) Expand range of ctrls for AES GCM. Permit setting invocation
4047 field on decrypt and retrieval of invocation field only on encrypt.
4050 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
4051 As required by RFC5289 these ciphersuites cannot be used if for
4052 versions of TLS earlier than 1.2.
4055 *) For FIPS capable OpenSSL interpret a NULL default public key method
4056 as unset and return the appropriate default but do *not* set the default.
4057 This means we can return the appropriate method in applications that
4058 switch between FIPS and non-FIPS modes.
4061 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
4062 ENGINE is used then we cannot handle that in the FIPS module so we
4063 keep original code iff non-FIPS operations are allowed.
4066 *) Add -attime option to openssl utilities.
4067 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
4069 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
4072 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
4073 FIPS EC methods unconditionally for now.
4076 *) New build option no-ec2m to disable characteristic 2 code.
4079 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
4080 all cases can be covered as some introduce binary incompatibilities.
4083 *) Redirect RSA operations to FIPS module including keygen,
4084 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
4087 *) Add similar low level API blocking to ciphers.
4090 *) Low level digest APIs are not approved in FIPS mode: any attempt
4091 to use these will cause a fatal error. Applications that *really* want
4092 to use them can use the private_* version instead.
4095 *) Redirect cipher operations to FIPS module for FIPS builds.
4098 *) Redirect digest operations to FIPS module for FIPS builds.
4101 *) Update build system to add "fips" flag which will link in fipscanister.o
4102 for static and shared library builds embedding a signature if needed.
4105 *) Output TLS supported curves in preference order instead of numerical
4106 order. This is currently hardcoded for the highest order curves first.
4107 This should be configurable so applications can judge speed vs strength.
4110 *) Add TLS v1.2 server support for client authentication.
4113 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
4117 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
4118 FIPS modules versions.
4121 *) Add TLS v1.2 client side support for client authentication. Keep cache
4122 of handshake records longer as we don't know the hash algorithm to use
4123 until after the certificate request message is received.
4126 *) Initial TLS v1.2 client support. Add a default signature algorithms
4127 extension including all the algorithms we support. Parse new signature
4128 format in client key exchange. Relax some ECC signing restrictions for
4129 TLS v1.2 as indicated in RFC5246.
4132 *) Add server support for TLS v1.2 signature algorithms extension. Switch
4133 to new signature format when needed using client digest preference.
4134 All server ciphersuites should now work correctly in TLS v1.2. No client
4135 support yet and no support for client certificates.
4138 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
4139 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
4140 ciphersuites. At present only RSA key exchange ciphersuites work with
4141 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
4142 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
4143 and version checking.
4146 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
4147 with this defined it will not be affected by any changes to ssl internal
4148 structures. Add several utility functions to allow openssl application
4149 to work with OPENSSL_NO_SSL_INTERN defined.
4152 *) A long standing patch to add support for SRP from EdelWeb (Peter
4153 Sylvester and Christophe Renou) was integrated.
4154 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
4155 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
4158 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
4161 *) Permit abbreviated handshakes when renegotiating using the function
4162 SSL_renegotiate_abbreviated().
4163 [Robin Seggelmann <seggelmann@fh-muenster.de>]
4165 *) Add call to ENGINE_register_all_complete() to
4166 ENGINE_load_builtin_engines(), so some implementations get used
4167 automatically instead of needing explicit application support.
4170 *) Add support for TLS key exporter as described in RFC5705.
4171 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
4173 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
4174 a few changes are required:
4176 Add SSL_OP_NO_TLSv1_1 flag.
4177 Add TLSv1_1 methods.
4178 Update version checking logic to handle version 1.1.
4179 Add explicit IV handling (ported from DTLS code).
4180 Add command line options to s_client/s_server.
4183 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
4185 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
4186 in CMS and PKCS7 code. When RSA decryption fails use a random key for
4187 content decryption and always return the same error. Note: this attack
4188 needs on average 2^20 messages so it only affects automated senders. The
4189 old behaviour can be re-enabled in the CMS code by setting the
4190 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
4191 an MMA defence is not necessary.
4192 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
4193 this issue. (CVE-2012-0884)
4196 *) Fix CVE-2011-4619: make sure we really are receiving a
4197 client hello before rejecting multiple SGC restarts. Thanks to
4198 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
4201 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
4203 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
4204 Thanks to Antonio Martin, Enterprise Secure Access Research and
4205 Development, Cisco Systems, Inc. for discovering this bug and
4206 preparing a fix. (CVE-2012-0050)
4209 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
4211 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
4212 of the Vaudenay padding oracle attack on CBC mode encryption
4213 which enables an efficient plaintext recovery attack against
4214 the OpenSSL implementation of DTLS. Their attack exploits timing
4215 differences arising during decryption processing. A research
4216 paper describing this attack can be found at:
4217 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
4218 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
4219 Security Group at Royal Holloway, University of London
4220 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
4221 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
4222 for preparing the fix. (CVE-2011-4108)
4223 [Robin Seggelmann, Michael Tuexen]
4225 *) Clear bytes used for block padding of SSL 3.0 records.
4227 [Adam Langley (Google)]
4229 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
4230 Kadianakis <desnacked@gmail.com> for discovering this issue and
4231 Adam Langley for preparing the fix. (CVE-2011-4619)
4232 [Adam Langley (Google)]
4234 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
4235 [Andrey Kulikov <amdeich@gmail.com>]
4237 *) Prevent malformed RFC3779 data triggering an assertion failure.
4238 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
4239 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
4240 [Rob Austein <sra@hactrn.net>]
4242 *) Improved PRNG seeding for VOS.
4243 [Paul Green <Paul.Green@stratus.com>]
4245 *) Fix ssl_ciph.c set-up race.
4246 [Adam Langley (Google)]
4248 *) Fix spurious failures in ecdsatest.c.
4249 [Emilia Käsper (Google)]
4251 *) Fix the BIO_f_buffer() implementation (which was mixing different
4252 interpretations of the '..._len' fields).
4253 [Adam Langley (Google)]
4255 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
4256 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
4257 threads won't reuse the same blinding coefficients.
4259 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
4260 lock to call BN_BLINDING_invert_ex, and avoids one use of
4261 BN_BLINDING_update for each BN_BLINDING structure (previously,
4262 the last update always remained unused).
4263 [Emilia Käsper (Google)]
4265 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
4266 [Bob Buckholz (Google)]
4268 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
4270 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
4271 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
4272 [Kaspar Brand <ossl@velox.ch>]
4274 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
4275 for multi-threaded use of ECDH. (CVE-2011-3210)
4276 [Adam Langley (Google)]
4278 *) Fix x509_name_ex_d2i memory leak on bad inputs.
4281 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
4282 signature public key algorithm by using OID xref utilities instead.
4283 Before this you could only use some ECC ciphersuites with SHA1 only.
4286 *) Add protection against ECDSA timing attacks as mentioned in the paper
4287 by Billy Bob Brumley and Nicola Tuveri, see:
4289 http://eprint.iacr.org/2011/232.pdf
4291 [Billy Bob Brumley and Nicola Tuveri]
4293 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
4295 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
4296 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
4298 *) Fix bug in string printing code: if *any* escaping is enabled we must
4299 escape the escape character (backslash) or the resulting string is
4303 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
4305 *) Disable code workaround for ancient and obsolete Netscape browsers
4306 and servers: an attacker can use it in a ciphersuite downgrade attack.
4307 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
4310 *) Fixed J-PAKE implementation error, originally discovered by
4311 Sebastien Martini, further info and confirmation from Stefan
4312 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
4315 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
4317 *) Fix extension code to avoid race conditions which can result in a buffer
4318 overrun vulnerability: resumed sessions must not be modified as they can
4319 be shared by multiple threads. CVE-2010-3864
4322 *) Fix WIN32 build system to correctly link an ENGINE directory into
4326 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
4328 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
4330 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
4332 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
4334 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
4335 context. The operation can be customised via the ctrl mechanism in
4336 case ENGINEs want to include additional functionality.
4339 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
4342 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
4343 output hashes compatible with older versions of OpenSSL.
4344 [Willy Weisz <weisz@vcpc.univie.ac.at>]
4346 *) Fix compression algorithm handling: if resuming a session use the
4347 compression algorithm of the resumed session instead of determining
4348 it from client hello again. Don't allow server to change algorithm.
4351 *) Add load_crls() function to apps tidying load_certs() too. Add option
4352 to verify utility to allow additional CRLs to be included.
4355 *) Update OCSP request code to permit adding custom headers to the request:
4356 some responders need this.
4359 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
4361 [Julia Lawall <julia@diku.dk>]
4363 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
4364 needlessly dereferenced structures, used obsolete functions and
4365 didn't handle all updated verify codes correctly.
4368 *) Disable MD2 in the default configuration.
4371 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
4372 indicate the initial BIO being pushed or popped. This makes it possible
4373 to determine whether the BIO is the one explicitly called or as a result
4374 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
4375 it handles reference counts correctly and doesn't zero out the I/O bio
4376 when it is not being explicitly popped. WARNING: applications which
4377 included workarounds for the old buggy behaviour will need to be modified
4378 or they could free up already freed BIOs.
4381 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
4382 renaming to all platforms (within the 0.9.8 branch, this was
4383 done conditionally on Netware platforms to avoid a name clash).
4384 [Guenter <lists@gknw.net>]
4386 *) Add ECDHE and PSK support to DTLS.
4387 [Michael Tuexen <tuexen@fh-muenster.de>]
4389 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
4393 *) Add "missing" function EVP_MD_flags() (without this the only way to
4394 retrieve a digest flags is by accessing the structure directly. Update
4395 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
4396 or cipher is registered as in the "from" argument. Print out all
4397 registered digests in the dgst usage message instead of manually
4398 attempting to work them out.
4401 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
4402 this allows the use of compression and extensions. Change default cipher
4403 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
4404 by default unless an application cipher string requests it.
4407 *) Alter match criteria in PKCS12_parse(). It used to try to use local
4408 key ids to find matching certificates and keys but some PKCS#12 files
4409 don't follow the (somewhat unwritten) rules and this strategy fails.
4410 Now just gather all certificates together and the first private key
4411 then look for the first certificate that matches the key.
4414 *) Support use of registered digest and cipher names for dgst and cipher
4415 commands instead of having to add each one as a special case. So now
4422 openssl dgst -sha256 foo
4424 and this works for ENGINE based algorithms too.
4428 *) Update Gost ENGINE to support parameter files.
4429 [Victor B. Wagner <vitus@cryptocom.ru>]
4431 *) Support GeneralizedTime in ca utility.
4432 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
4434 *) Enhance the hash format used for certificate directory links. The new
4435 form uses the canonical encoding (meaning equivalent names will work
4436 even if they aren't identical) and uses SHA1 instead of MD5. This form
4437 is incompatible with the older format and as a result c_rehash should
4438 be used to rebuild symbolic links.
4441 *) Make PKCS#8 the default write format for private keys, replacing the
4442 traditional format. This form is standardised, more secure and doesn't
4443 include an implicit MD5 dependency.
4446 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
4447 committed to OpenSSL should pass this lot as a minimum.
4450 *) Add session ticket override functionality for use by EAP-FAST.
4451 [Jouni Malinen <j@w1.fi>]
4453 *) Modify HMAC functions to return a value. Since these can be implemented
4454 in an ENGINE errors can occur.
4457 *) Type-checked OBJ_bsearch_ex.
4460 *) Type-checked OBJ_bsearch. Also some constification necessitated
4461 by type-checking. Still to come: TXT_DB, bsearch(?),
4462 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
4466 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
4467 seconds to a tm structure directly, instead of going through OS
4468 specific date routines. This avoids any issues with OS routines such
4469 as the year 2038 bug. New *_adj() functions for ASN1 time structures
4470 and X509_time_adj_ex() to cover the extended range. The existing
4471 X509_time_adj() is still usable and will no longer have any date issues.
4474 *) Delta CRL support. New use deltas option which will attempt to locate
4475 and search any appropriate delta CRLs available.
4477 This work was sponsored by Google.
4480 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
4481 code and add additional score elements. Validate alternate CRL paths
4482 as part of the CRL checking and indicate a new error "CRL path validation
4483 error" in this case. Applications wanting additional details can use
4484 the verify callback and check the new "parent" field. If this is not
4485 NULL CRL path validation is taking place. Existing applications won't
4486 see this because it requires extended CRL support which is off by
4489 This work was sponsored by Google.
4492 *) Support for freshest CRL extension.
4494 This work was sponsored by Google.
4497 *) Initial indirect CRL support. Currently only supported in the CRLs
4498 passed directly and not via lookup. Process certificate issuer
4499 CRL entry extension and lookup CRL entries by bother issuer name
4500 and serial number. Check and process CRL issuer entry in IDP extension.
4502 This work was sponsored by Google.
4505 *) Add support for distinct certificate and CRL paths. The CRL issuer
4506 certificate is validated separately in this case. Only enabled if
4507 an extended CRL support flag is set: this flag will enable additional
4508 CRL functionality in future.
4510 This work was sponsored by Google.
4513 *) Add support for policy mappings extension.
4515 This work was sponsored by Google.
4518 *) Fixes to pathlength constraint, self issued certificate handling,
4519 policy processing to align with RFC3280 and PKITS tests.
4521 This work was sponsored by Google.
4524 *) Support for name constraints certificate extension. DN, email, DNS
4525 and URI types are currently supported.
4527 This work was sponsored by Google.
4530 *) To cater for systems that provide a pointer-based thread ID rather
4531 than numeric, deprecate the current numeric thread ID mechanism and
4532 replace it with a structure and associated callback type. This
4533 mechanism allows a numeric "hash" to be extracted from a thread ID in
4534 either case, and on platforms where pointers are larger than 'long',
4535 mixing is done to help ensure the numeric 'hash' is usable even if it
4536 can't be guaranteed unique. The default mechanism is to use "&errno"
4537 as a pointer-based thread ID to distinguish between threads.
4539 Applications that want to provide their own thread IDs should now use
4540 CRYPTO_THREADID_set_callback() to register a callback that will call
4541 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
4543 Note that ERR_remove_state() is now deprecated, because it is tied
4544 to the assumption that thread IDs are numeric. ERR_remove_state(0)
4545 to free the current thread's error state should be replaced by
4546 ERR_remove_thread_state(NULL).
4548 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
4549 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
4550 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
4551 application was previously providing a numeric thread callback that
4552 was inappropriate for distinguishing threads, then uniqueness might
4553 have been obtained with &errno that happened immediately in the
4554 intermediate development versions of OpenSSL; this is no longer the
4555 case, the numeric thread callback will now override the automatic use
4557 [Geoff Thorpe, with help from Bodo Moeller]
4559 *) Initial support for different CRL issuing certificates. This covers a
4560 simple case where the self issued certificates in the chain exist and
4561 the real CRL issuer is higher in the existing chain.
4563 This work was sponsored by Google.
4566 *) Removed effectively defunct crypto/store from the build.
4569 *) Revamp of STACK to provide stronger type-checking. Still to come:
4570 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
4571 ASN1_STRING, CONF_VALUE.
4574 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
4575 RAM on SSL connections. This option can save about 34k per idle SSL.
4578 *) Revamp of LHASH to provide stronger type-checking. Still to come:
4579 STACK, TXT_DB, bsearch, qsort.
4582 *) Initial support for Cryptographic Message Syntax (aka CMS) based
4583 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
4584 support for data, signedData, compressedData, digestedData and
4585 encryptedData, envelopedData types included. Scripts to check against
4586 RFC4134 examples draft and interop and consistency checks of many
4587 content types and variants.
4590 *) Add options to enc utility to support use of zlib compression BIO.
4593 *) Extend mk1mf to support importing of options and assembly language
4594 files from Configure script, currently only included in VC-WIN32.
4595 The assembly language rules can now optionally generate the source
4596 files from the associated perl scripts.
4599 *) Implement remaining functionality needed to support GOST ciphersuites.
4600 Interop testing has been performed using CryptoPro implementations.
4601 [Victor B. Wagner <vitus@cryptocom.ru>]
4603 *) s390x assembler pack.
4606 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
4610 *) Implement Opaque PRF Input TLS extension as specified in
4611 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
4612 official specification yet and no extension type assignment by
4613 IANA exists, this extension (for now) will have to be explicitly
4614 enabled when building OpenSSL by providing the extension number
4615 to use. For example, specify an option
4617 -DTLSEXT_TYPE_opaque_prf_input=0x9527
4619 to the "config" or "Configure" script to enable the extension,
4620 assuming extension number 0x9527 (which is a completely arbitrary
4621 and unofficial assignment based on the MD5 hash of the Internet
4622 Draft). Note that by doing so, you potentially lose
4623 interoperability with other TLS implementations since these might
4624 be using the same extension number for other purposes.
4626 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
4627 opaque PRF input value to use in the handshake. This will create
4628 an internal copy of the length-'len' string at 'src', and will
4629 return non-zero for success.
4631 To get more control and flexibility, provide a callback function
4634 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
4635 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
4639 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
4642 Callback function 'cb' will be called in handshakes, and is
4643 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
4644 Argument 'arg' is for application purposes (the value as given to
4645 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
4646 be provided to the callback function). The callback function
4647 has to return non-zero to report success: usually 1 to use opaque
4648 PRF input just if possible, or 2 to enforce use of the opaque PRF
4649 input. In the latter case, the library will abort the handshake
4650 if opaque PRF input is not successfully negotiated.
4652 Arguments 'peerinput' and 'len' given to the callback function
4653 will always be NULL and 0 in the case of a client. A server will
4654 see the client's opaque PRF input through these variables if
4655 available (NULL and 0 otherwise). Note that if the server
4656 provides an opaque PRF input, the length must be the same as the
4657 length of the client's opaque PRF input.
4659 Note that the callback function will only be called when creating
4660 a new session (session resumption can resume whatever was
4661 previously negotiated), and will not be called in SSL 2.0
4662 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
4663 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
4664 for applications that need to enforce opaque PRF input.
4668 *) Update ssl code to support digests other than SHA1+MD5 for handshake
4671 [Victor B. Wagner <vitus@cryptocom.ru>]
4673 *) Add RFC4507 support to OpenSSL. This includes the corrections in
4674 RFC4507bis. The encrypted ticket format is an encrypted encoded
4675 SSL_SESSION structure, that way new session features are automatically
4678 If a client application caches session in an SSL_SESSION structure
4679 support is transparent because tickets are now stored in the encoded
4682 The SSL_CTX structure automatically generates keys for ticket
4683 protection in servers so again support should be possible
4684 with no application modification.
4686 If a client or server wishes to disable RFC4507 support then the option
4687 SSL_OP_NO_TICKET can be set.
4689 Add a TLS extension debugging callback to allow the contents of any client
4690 or server extensions to be examined.
4692 This work was sponsored by Google.
4695 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
4696 OpenSSL should now compile cleanly on gcc 4.2
4697 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
4699 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
4700 support including streaming MAC support: this is required for GOST
4701 ciphersuite support.
4702 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
4704 *) Add option -stream to use PKCS#7 streaming in smime utility. New
4705 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
4706 to output in BER and PEM format.
4709 *) Experimental support for use of HMAC via EVP_PKEY interface. This
4710 allows HMAC to be handled via the EVP_DigestSign*() interface. The
4711 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
4712 ENGINE support for HMAC keys which are unextractable. New -mac and
4713 -macopt options to dgst utility.
4716 *) New option -sigopt to dgst utility. Update dgst to use
4717 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
4718 alternative signing parameters such as X9.31 or PSS in the dgst
4722 *) Change ssl_cipher_apply_rule(), the internal function that does
4723 the work each time a ciphersuite string requests enabling
4724 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
4725 removing ("!foo+bar") a class of ciphersuites: Now it maintains
4726 the order of disabled ciphersuites such that those ciphersuites
4727 that most recently went from enabled to disabled not only stay
4728 in order with respect to each other, but also have higher priority
4729 than other disabled ciphersuites the next time ciphersuites are
4732 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
4733 the same ciphersuites as with "HIGH" alone, but in a specific
4734 order where the PSK ciphersuites come first (since they are the
4735 most recently disabled ciphersuites when "HIGH" is parsed).
4737 Also, change ssl_create_cipher_list() (using this new
4738 functionality) such that between otherwise identical
4739 ciphersuites, ephemeral ECDH is preferred over ephemeral DH in
4743 *) Change ssl_create_cipher_list() so that it automatically
4744 arranges the ciphersuites in reasonable order before starting
4745 to process the rule string. Thus, the definition for "DEFAULT"
4746 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
4747 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
4748 This makes it much easier to arrive at a reasonable default order
4749 in applications for which anonymous ciphers are OK (meaning
4750 that you can't actually use DEFAULT).
4751 [Bodo Moeller; suggested by Victor Duchovni]
4753 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
4754 processing) into multiple integers instead of setting
4755 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
4756 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
4757 (These masks as well as the individual bit definitions are hidden
4758 away into the non-exported interface ssl/ssl_locl.h, so this
4759 change to the definition of the SSL_CIPHER structure shouldn't
4760 affect applications.) This give us more bits for each of these
4761 categories, so there is no longer a need to coagulate AES128 and
4762 AES256 into a single algorithm bit, and to coagulate Camellia128
4763 and Camellia256 into a single algorithm bit, which has led to all
4766 Thus, among other things, the kludge introduced in 0.9.7m and
4767 0.9.8e for masking out AES256 independently of AES128 or masking
4768 out Camellia256 independently of AES256 is not needed here in 0.9.9.
4770 With the change, we also introduce new ciphersuite aliases that
4771 so far were missing: "AES128", "AES256", "CAMELLIA128", and
4775 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
4776 Use the leftmost N bytes of the signature input if the input is
4777 larger than the prime q (with N being the size in bytes of q).
4780 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
4781 it yet and it is largely untested.
4784 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
4787 *) Initial incomplete changes to avoid need for function casts in OpenSSL
4788 some compilers (gcc 4.2 and later) reject their use. Safestack is
4789 reimplemented. Update ASN1 to avoid use of legacy functions.
4792 *) Win32/64 targets are linked with Winsock2.
4795 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
4796 to external functions. This can be used to increase CRL handling
4797 efficiency especially when CRLs are very large by (for example) storing
4798 the CRL revoked certificates in a database.
4801 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
4802 new CRLs added to a directory can be used. New command line option
4803 -verify_return_error to s_client and s_server. This causes real errors
4804 to be returned by the verify callback instead of carrying on no matter
4805 what. This reflects the way a "real world" verify callback would behave.
4808 *) GOST engine, supporting several GOST algorithms and public key formats.
4809 Kindly donated by Cryptocom.
4812 *) Partial support for Issuing Distribution Point CRL extension. CRLs
4813 partitioned by DP are handled but no indirect CRL or reason partitioning
4814 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
4815 selected via a scoring technique which handles IDP and AKID in CRLs.
4818 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
4819 will ultimately be used for all verify operations: this will remove the
4820 X509_STORE dependency on certificate verification and allow alternative
4821 lookup methods. X509_STORE based implementations of these two callbacks.
4824 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
4825 Modify get_crl() to find a valid (unexpired) CRL if possible.
4828 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
4829 this would be called X509_CRL_cmp() but that name is already used by
4830 a function that just compares CRL issuer names. Cache several CRL
4831 extensions in X509_CRL structure and cache CRLDP in X509.
4834 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
4835 this maps equivalent X509_NAME structures into a consistent structure.
4836 Name comparison can then be performed rapidly using memcmp().
4839 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
4843 *) Allow digests to supply their own micalg string for S/MIME type using
4844 the ctrl EVP_MD_CTRL_MICALG.
4847 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
4848 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
4849 ctrl. It can then customise the structure before and/or after signing
4853 *) New function OBJ_add_sigid() to allow application defined signature OIDs
4854 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
4855 to free up any added signature OIDs.
4858 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
4859 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
4860 digest and cipher tables. New options added to openssl utility:
4861 list-message-digest-algorithms and list-cipher-algorithms.
4864 *) Change the array representation of binary polynomials: the list
4865 of degrees of non-zero coefficients is now terminated with -1.
4866 Previously it was terminated with 0, which was also part of the
4867 value; thus, the array representation was not applicable to
4868 polynomials where t^0 has coefficient zero. This change makes
4869 the array representation useful in a more general context.
4872 *) Various modifications and fixes to SSL/TLS cipher string
4873 handling. For ECC, the code now distinguishes between fixed ECDH
4874 with RSA certificates on the one hand and with ECDSA certificates
4875 on the other hand, since these are separate ciphersuites. The
4876 unused code for Fortezza ciphersuites has been removed.
4878 For consistency with EDH, ephemeral ECDH is now called "EECDH"
4879 (not "ECDHE"). For consistency with the code for DH
4880 certificates, use of ECDH certificates is now considered ECDH
4881 authentication, not RSA or ECDSA authentication (the latter is
4882 merely the CA's signing algorithm and not actively used in the
4885 The temporary ciphersuite alias "ECCdraft" is no longer
4886 available, and ECC ciphersuites are no longer excluded from "ALL"
4887 and "DEFAULT". The following aliases now exist for RFC 4492
4888 ciphersuites, most of these by analogy with the DH case:
4890 kECDHr - ECDH cert, signed with RSA
4891 kECDHe - ECDH cert, signed with ECDSA
4892 kECDH - ECDH cert (signed with either RSA or ECDSA)
4893 kEECDH - ephemeral ECDH
4894 ECDH - ECDH cert or ephemeral ECDH
4900 AECDH - anonymous ECDH
4901 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
4905 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
4906 Use correct micalg parameters depending on digest(s) in signed message.
4909 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
4910 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
4913 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
4914 an engine to register a method. Add ENGINE lookups for methods and
4915 functional reference processing.
4918 *) New functions EVP_Digest{Sign,Verify)*. These are enhanced versions of
4919 EVP_{Sign,Verify}* which allow an application to customise the signature
4923 *) New -resign option to smime utility. This adds one or more signers
4924 to an existing PKCS#7 signedData structure. Also -md option to use an
4925 alternative message digest algorithm for signing.
4928 *) Tidy up PKCS#7 routines and add new functions to make it easier to
4929 create PKCS7 structures containing multiple signers. Update smime
4930 application to support multiple signers.
4933 *) New -macalg option to pkcs12 utility to allow setting of an alternative
4937 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
4938 Reorganize PBE internals to lookup from a static table using NIDs,
4939 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
4940 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
4941 PRF which will be automatically used with PBES2.
4944 *) Replace the algorithm specific calls to generate keys in "req" with the
4948 *) Update PKCS#7 enveloped data routines to use new API. This is now
4949 supported by any public key method supporting the encrypt operation. A
4950 ctrl is added to allow the public key algorithm to examine or modify
4951 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
4955 *) Add a ctrl to asn1 method to allow a public key algorithm to express
4956 a default digest type to use. In most cases this will be SHA1 but some
4957 algorithms (such as GOST) need to specify an alternative digest. The
4958 return value indicates how strong the preference is 1 means optional and
4959 2 is mandatory (that is it is the only supported type). Modify
4960 ASN1_item_sign() to accept a NULL digest argument to indicate it should
4961 use the default md. Update openssl utilities to use the default digest
4962 type for signing if it is not explicitly indicated.
4965 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
4966 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
4967 signing method from the key type. This effectively removes the link
4968 between digests and public key types.
4971 *) Add an OID cross reference table and utility functions. Its purpose is to
4972 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
4973 rsaEncryption. This will allow some of the algorithm specific hackery
4974 needed to use the correct OID to be removed.
4977 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
4978 structures for PKCS7_sign(). They are now set up by the relevant public
4982 *) Add provisional EC pkey method with support for ECDSA and ECDH.
4985 *) Add support for key derivation (agreement) in the API, DH method and
4989 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
4990 public and private key formats. As a side effect these add additional
4991 command line functionality not previously available: DSA signatures can be
4992 generated and verified using pkeyutl and DH key support and generation in
4997 [Oliver Tappe <zooey@hirschkaefer.de>]
4999 *) New make target "install_html_docs" installs HTML renditions of the
5001 [Oliver Tappe <zooey@hirschkaefer.de>]
5003 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
5004 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
5005 support key and parameter generation and add initial key generation
5006 functionality for RSA.
5009 *) Add functions for main EVP_PKEY_method operations. The undocumented
5010 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
5011 EVP_PKEY_{encrypt,decrypt}_old.
5014 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
5015 key API, doesn't do much yet.
5018 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
5019 public key algorithms. New option to openssl utility:
5020 "list-public-key-algorithms" to print out info.
5023 *) Implement the Supported Elliptic Curves Extension for
5024 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
5027 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
5028 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
5031 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
5032 utilities such as rsa, dsa, dsaparam etc except they process any key
5036 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
5037 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
5038 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
5042 *) Initial support for pluggable public key ASN1.
5043 De-spaghettify the public key ASN1 handling. Move public and private
5044 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
5045 algorithm specific handling to a single module within the relevant
5046 algorithm directory. Add functions to allow (near) opaque processing
5047 of public and private key structures.
5050 *) Implement the Supported Point Formats Extension for
5051 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
5054 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
5055 for the psk identity [hint] and the psk callback functions to the
5056 SSL_SESSION, SSL and SSL_CTX structure.
5059 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
5063 SSL_CTX_use_psk_identity_hint
5064 SSL_get_psk_identity_hint
5065 SSL_get_psk_identity
5066 SSL_use_psk_identity_hint
5068 [Mika Kousa and Pasi Eronen of Nokia Corporation]
5070 *) Add RFC 3161 compliant time stamp request creation, response generation
5071 and response verification functionality.
5072 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
5074 *) Add initial support for TLS extensions, specifically for the server_name
5075 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5076 have new members for a host name. The SSL data structure has an
5077 additional member SSL_CTX *initial_ctx so that new sessions can be
5078 stored in that context to allow for session resumption, even after the
5079 SSL has been switched to a new SSL_CTX in reaction to a client's
5080 server_name extension.
5082 New functions (subject to change):
5084 SSL_get_servername()
5085 SSL_get_servername_type()
5088 New CTRL codes and macros (subject to change):
5090 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5091 - SSL_CTX_set_tlsext_servername_callback()
5092 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5093 - SSL_CTX_set_tlsext_servername_arg()
5094 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5096 openssl s_client has a new '-servername ...' option.
5098 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5099 '-key2 ...', '-servername_fatal' (subject to change). This allows
5100 testing the HostName extension for a specific single host name ('-cert'
5101 and '-key' remain fallbacks for handshakes without HostName
5102 negotiation). If the unrecognized_name alert has to be sent, this by
5103 default is a warning; it becomes fatal with the '-servername_fatal'
5106 [Peter Sylvester, Remy Allais, Christophe Renou]
5108 *) Whirlpool hash implementation is added.
5111 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
5112 bn(64,32). Because of instruction set limitations it doesn't have
5113 any negative impact on performance. This was done mostly in order
5114 to make it possible to share assembler modules, such as bn_mul_mont
5115 implementations, between 32- and 64-bit builds without hassle.
5118 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
5119 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
5123 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
5124 dedicated Montgomery multiplication procedure, is introduced.
5125 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
5126 "64-bit" performance on certain 32-bit targets.
5129 *) New option SSL_OP_NO_COMP to disable use of compression selectively
5130 in SSL structures. New SSL ctrl to set maximum send fragment size.
5131 Save memory by setting the I/O buffer sizes dynamically instead of
5132 using the maximum available value.
5135 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
5136 in addition to the text details.
5139 *) Very, very preliminary EXPERIMENTAL support for printing of general
5140 ASN1 structures. This currently produces rather ugly output and doesn't
5141 handle several customised structures at all.
5144 *) Integrated support for PVK file format and some related formats such
5145 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
5146 these in the 'rsa' and 'dsa' utilities.
5149 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
5152 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
5153 place for the (very old) "NETSCAPE" format certificates which are now
5154 handled using new ASN1 code equivalents.
5157 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
5158 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
5159 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
5162 *) Modify CRL distribution points extension code to print out previously
5163 unsupported fields. Enhance extension setting code to allow setting of
5167 *) Add print and set support for Issuing Distribution Point CRL extension.
5170 *) Change 'Configure' script to enable Camellia by default.
5173 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
5175 *) When rejecting SSL/TLS records due to an incorrect version number, never
5176 update s->server with a new major version number. As of
5177 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
5178 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
5179 the previous behavior could result in a read attempt at NULL when
5180 receiving specific incorrect SSL/TLS records once record payload
5181 protection is active. (CVE-2010-0740)
5182 [Bodo Moeller, Adam Langley <agl@chromium.org>]
5184 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
5185 could be crashed if the relevant tables were not present (e.g. chrooted).
5186 [Tomas Hoger <thoger@redhat.com>]
5188 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
5190 *) Always check bn_wexpand() return values for failure. (CVE-2009-3245)
5191 [Martin Olsson, Neel Mehta]
5193 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
5194 accommodate for stack sorting, always a write lock!).
5197 *) On some versions of WIN32 Heap32Next is very slow. This can cause
5198 excessive delays in the RAND_poll(): over a minute. As a workaround
5199 include a time check in the inner Heap32Next loop too.
5202 *) The code that handled flushing of data in SSL/TLS originally used the
5203 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
5204 the problem outlined in PR#1949. The fix suggested there however can
5205 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
5206 of Apache). So instead simplify the code to flush unconditionally.
5207 This should be fine since flushing with no data to flush is a no op.
5210 *) Handle TLS versions 2.0 and later properly and correctly use the
5211 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
5212 off ancient servers have a habit of sticking around for a while...
5215 *) Modify compression code so it frees up structures without using the
5216 ex_data callbacks. This works around a problem where some applications
5217 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
5218 restarting) then use compression (e.g. SSL with compression) later.
5219 This results in significant per-connection memory leaks and
5220 has caused some security issues including CVE-2008-1678 and
5224 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
5225 change when encrypting or decrypting.
5228 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
5229 connect and renegotiate with servers which do not support RI.
5230 Until RI is more widely deployed this option is enabled by default.
5233 *) Add "missing" ssl ctrls to clear options and mode.
5236 *) If client attempts to renegotiate and doesn't support RI respond with
5237 a no_renegotiation alert as required by RFC5746. Some renegotiating
5238 TLS clients will continue a connection gracefully when they receive
5239 the alert. Unfortunately OpenSSL mishandled this alert and would hang
5240 waiting for a server hello which it will never receive. Now we treat a
5241 received no_renegotiation alert as a fatal error. This is because
5242 applications requesting a renegotiation might well expect it to succeed
5243 and would have no code in place to handle the server denying it so the
5244 only safe thing to do is to terminate the connection.
5247 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
5248 peer supports secure renegotiation and 0 otherwise. Print out peer
5249 renegotiation support in s_client/s_server.
5252 *) Replace the highly broken and deprecated SPKAC certification method with
5253 the updated NID creation version. This should correctly handle UTF8.
5256 *) Implement RFC5746. Re-enable renegotiation but require the extension
5257 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
5258 turns out to be a bad idea. It has been replaced by
5259 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
5260 SSL_CTX_set_options(). This is really not recommended unless you
5261 know what you are doing.
5262 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
5264 *) Fixes to stateless session resumption handling. Use initial_ctx when
5265 issuing and attempting to decrypt tickets in case it has changed during
5266 servername handling. Use a non-zero length session ID when attempting
5267 stateless session resumption: this makes it possible to determine if
5268 a resumption has occurred immediately after receiving server hello
5269 (several places in OpenSSL subtly assume this) instead of later in
5273 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
5274 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
5275 fixes for a few places where the return code is not checked
5277 [Julia Lawall <julia@diku.dk>]
5279 *) Add --strict-warnings option to Configure script to include devteam
5280 warnings in other configurations.
5283 *) Add support for --libdir option and LIBDIR variable in makefiles. This
5284 makes it possible to install openssl libraries in locations which
5285 have names other than "lib", for example "/usr/lib64" which some
5287 [Steve Henson, based on patch from Jeremy Utley]
5289 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
5290 X690 8.9.12 and can produce some misleading textual output of OIDs.
5291 [Steve Henson, reported by Dan Kaminsky]
5293 *) Delete MD2 from algorithm tables. This follows the recommendation in
5294 several standards that it is not used in new applications due to
5295 several cryptographic weaknesses. For binary compatibility reasons
5296 the MD2 API is still compiled in by default.
5299 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
5303 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
5304 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
5306 [Guenter <lists@gknw.net>]
5308 *) Fix the server certificate chain building code to use X509_verify_cert(),
5309 it used to have an ad-hoc builder which was unable to cope with anything
5310 other than a simple chain.
5311 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
5313 *) Don't check self signed certificate signatures in X509_verify_cert()
5314 by default (a flag can override this): it just wastes time without
5315 adding any security. As a useful side effect self signed root CAs
5316 with non-FIPS digests are now usable in FIPS mode.
5319 *) In dtls1_process_out_of_seq_message() the check if the current message
5320 is already buffered was missing. For every new message was memory
5321 allocated, allowing an attacker to perform an denial of service attack
5322 with sending out of seq handshake messages until there is no memory
5323 left. Additionally every future message was buffered, even if the
5324 sequence number made no sense and would be part of another handshake.
5325 So only messages with sequence numbers less than 10 in advance will be
5326 buffered. (CVE-2009-1378)
5327 [Robin Seggelmann, discovered by Daniel Mentz]
5329 *) Records are buffered if they arrive with a future epoch to be
5330 processed after finishing the corresponding handshake. There is
5331 currently no limitation to this buffer allowing an attacker to perform
5332 a DOS attack with sending records with future epochs until there is no
5333 memory left. This patch adds the pqueue_size() function to determine
5334 the size of a buffer and limits the record buffer to 100 entries.
5336 [Robin Seggelmann, discovered by Daniel Mentz]
5338 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
5339 parent structure is freed. (CVE-2009-1379)
5342 *) Handle non-blocking I/O properly in SSL_shutdown() call.
5343 [Darryl Miles <darryl-mailinglists@netbauds.net>]
5346 [Ilya O. <vrghost@gmail.com>]
5348 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
5350 *) Disable renegotiation completely - this fixes a severe security
5351 problem (CVE-2009-3555) at the cost of breaking all
5352 renegotiation. Renegotiation can be re-enabled by setting
5353 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
5354 run-time. This is really not recommended unless you know what
5358 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
5360 *) Don't set val to NULL when freeing up structures, it is freed up by
5361 underlying code. If sizeof(void *) > sizeof(long) this can result in
5362 zeroing past the valid field. (CVE-2009-0789)
5363 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
5365 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
5366 checked correctly. This would allow some invalid signed attributes to
5367 appear to verify correctly. (CVE-2009-0591)
5368 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5370 *) Reject UniversalString and BMPString types with invalid lengths. This
5371 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
5372 a legal length. (CVE-2009-0590)
5375 *) Set S/MIME signing as the default purpose rather than setting it
5376 unconditionally. This allows applications to override it at the store
5380 *) Permit restricted recursion of ASN1 strings. This is needed in practice
5381 to handle some structures.
5384 *) Improve efficiency of mem_gets: don't search whole buffer each time
5386 [Jeremy Shapiro <jnshapir@us.ibm.com>]
5388 *) New -hex option for openssl rand.
5391 *) Print out UTF8String and NumericString when parsing ASN1.
5394 *) Support NumericString type for name components.
5397 *) Allow CC in the environment to override the automatically chosen
5398 compiler. Note that nothing is done to ensure flags work with the
5402 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
5404 *) Properly check EVP_VerifyFinal() and similar return values
5406 [Ben Laurie, Bodo Moeller, Google Security Team]
5408 *) Enable TLS extensions by default.
5411 *) Allow the CHIL engine to be loaded, whether the application is
5412 multithreaded or not. (This does not release the developer from the
5413 obligation to set up the dynamic locking callbacks.)
5414 [Sander Temme <sander@temme.net>]
5416 *) Use correct exit code if there is an error in dgst command.
5417 [Steve Henson; problem pointed out by Roland Dirlewanger]
5419 *) Tweak Configure so that you need to say "experimental-jpake" to enable
5420 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
5423 *) Add experimental JPAKE support, including demo authentication in
5424 s_client and s_server.
5427 *) Set the comparison function in v3_addr_canonize().
5428 [Rob Austein <sra@hactrn.net>]
5430 *) Add support for XMPP STARTTLS in s_client.
5431 [Philip Paeps <philip@freebsd.org>]
5433 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
5434 to ensure that even with this option, only ciphersuites in the
5435 server's preference list will be accepted. (Note that the option
5436 applies only when resuming a session, so the earlier behavior was
5437 just about the algorithm choice for symmetric cryptography.)
5440 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
5442 *) Fix NULL pointer dereference if a DTLS server received
5443 ChangeCipherSpec as first record (CVE-2009-1386).
5446 *) Fix a state transition in s3_srvr.c and d1_srvr.c
5447 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
5450 *) The fix in 0.9.8c that supposedly got rid of unsafe
5451 double-checked locking was incomplete for RSA blinding,
5452 addressing just one layer of what turns out to have been
5453 doubly unsafe triple-checked locking.
5455 So now fix this for real by retiring the MONT_HELPER macro
5456 in crypto/rsa/rsa_eay.c.
5458 [Bodo Moeller; problem pointed out by Marius Schilder]
5460 *) Various precautionary measures:
5462 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
5464 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
5465 (NB: This would require knowledge of the secret session ticket key
5466 to exploit, in which case you'd be SOL either way.)
5468 - Change bn_nist.c so that it will properly handle input BIGNUMs
5469 outside the expected range.
5471 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
5474 [Neel Mehta, Bodo Moeller]
5476 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
5477 the load fails. Useful for distros.
5478 [Ben Laurie and the FreeBSD team]
5480 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
5483 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
5486 *) Expand ENGINE to support engine supplied SSL client certificate functions.
5488 This work was sponsored by Logica.
5491 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
5492 keystores. Support for SSL/TLS client authentication too.
5493 Not compiled unless enable-capieng specified to Configure.
5495 This work was sponsored by Logica.
5498 *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using
5499 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
5500 attribute creation routines such as certificate requests and PKCS#12
5504 Changes between 0.9.8g and 0.9.8h [28 May 2008]
5506 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
5507 handshake which could lead to a client crash as found using the
5508 Codenomicon TLS test suite (CVE-2008-1672)
5509 [Steve Henson, Mark Cox]
5511 *) Fix double free in TLS server name extensions which could lead to
5512 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
5515 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
5517 Clear the error queue to ensure that error entries left from
5518 older function calls do not interfere with the correct operation.
5519 [Lutz Jaenicke, Erik de Castro Lopo]
5521 *) Remove root CA certificates of commercial CAs:
5523 The OpenSSL project does not recommend any specific CA and does not
5524 have any policy with respect to including or excluding any CA.
5525 Therefore it does not make any sense to ship an arbitrary selection
5526 of root CA certificates with the OpenSSL software.
5529 *) RSA OAEP patches to fix two separate invalid memory reads.
5530 The first one involves inputs when 'lzero' is greater than
5531 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
5532 before the beginning of from). The second one involves inputs where
5533 the 'db' section contains nothing but zeroes (there is a one-byte
5534 invalid read after the end of 'db').
5535 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5537 *) Partial backport from 0.9.9-dev:
5539 Introduce bn_mul_mont (dedicated Montgomery multiplication
5540 procedure) as a candidate for BIGNUM assembler implementation.
5541 While 0.9.9-dev uses assembler for various architectures, only
5542 x86_64 is available by default here in the 0.9.8 branch, and
5543 32-bit x86 is available through a compile-time setting.
5545 To try the 32-bit x86 assembler implementation, use Configure
5546 option "enable-montasm" (which exists only for this backport).
5548 As "enable-montasm" for 32-bit x86 disclaims code stability
5549 anyway, in this constellation we activate additional code
5550 backported from 0.9.9-dev for further performance improvements,
5551 namely BN_from_montgomery_word. (To enable this otherwise,
5552 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
5554 [Andy Polyakov (backport partially by Bodo Moeller)]
5556 *) Add TLS session ticket callback. This allows an application to set
5557 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
5558 values. This is useful for key rollover for example where several key
5559 sets may exist with different names.
5562 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
5563 This was broken until now in 0.9.8 releases, such that the only way
5564 a registered ENGINE could be used (assuming it initialises
5565 successfully on the host) was to explicitly set it as the default
5566 for the relevant algorithms. This is in contradiction with 0.9.7
5567 behaviour and the documentation. With this fix, when an ENGINE is
5568 registered into a given algorithm's table of implementations, the
5569 'uptodate' flag is reset so that auto-discovery will be used next
5570 time a new context for that algorithm attempts to select an
5572 [Ian Lister (tweaked by Geoff Thorpe)]
5574 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
5575 implementation in the following ways:
5577 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
5580 Lack of BER streaming support means one pass streaming processing is
5581 only supported if data is detached: setting the streaming flag is
5582 ignored for embedded content.
5584 CMS support is disabled by default and must be explicitly enabled
5585 with the enable-cms configuration option.
5588 *) Update the GMP engine glue to do direct copies between BIGNUM and
5589 mpz_t when openssl and GMP use the same limb size. Otherwise the
5590 existing "conversion via a text string export" trick is still used.
5591 [Paul Sheer <paulsheer@gmail.com>]
5593 *) Zlib compression BIO. This is a filter BIO which compressed and
5594 uncompresses any data passed through it.
5597 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
5598 RFC3394 compatible AES key wrapping.
5601 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
5602 sets string data without copying. X509_ALGOR_set0() and
5603 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
5604 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
5605 from an X509_ATTRIBUTE structure optionally checking it occurs only
5606 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
5610 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
5611 to get the expected BN_FLG_CONSTTIME behavior.
5612 [Bodo Moeller (Google)]
5616 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
5617 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
5618 - added some more tests to do_tests.pl
5619 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
5620 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
5621 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
5622 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
5623 - various changes to netware.pl to enable gcc-cross builds on Win32
5625 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
5626 - various changes to fix missing prototype warnings
5627 - fixed x86nasm.pl to create correct asm files for NASM COFF output
5628 - added AES, WHIRLPOOL and CPUID assembler code to build files
5629 - added missing AES assembler make rules to mk1mf.pl
5630 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
5631 [Guenter Knauf <eflash@gmx.net>]
5633 *) Implement certificate status request TLS extension defined in RFC3546.
5634 A client can set the appropriate parameters and receive the encoded
5635 OCSP response via a callback. A server can query the supplied parameters
5636 and set the encoded OCSP response in the callback. Add simplified examples
5637 to s_client and s_server.
5640 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
5642 *) Fix various bugs:
5643 + Binary incompatibility of ssl_ctx_st structure
5644 + DTLS interoperation with non-compliant servers
5645 + Don't call get_session_cb() without proposed session
5646 + Fix ia64 assembler code
5647 [Andy Polyakov, Steve Henson]
5649 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
5651 *) DTLS Handshake overhaul. There were longstanding issues with
5652 OpenSSL DTLS implementation, which were making it impossible for
5653 RFC 4347 compliant client to communicate with OpenSSL server.
5654 Unfortunately just fixing these incompatibilities would "cut off"
5655 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
5656 server keeps tolerating non RFC compliant syntax. The opposite is
5657 not true, 0.9.8f client can not communicate with earlier server.
5658 This update even addresses CVE-2007-4995.
5661 *) Changes to avoid need for function casts in OpenSSL: some compilers
5662 (gcc 4.2 and later) reject their use.
5663 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
5666 *) Add RFC4507 support to OpenSSL. This includes the corrections in
5667 RFC4507bis. The encrypted ticket format is an encrypted encoded
5668 SSL_SESSION structure, that way new session features are automatically
5671 If a client application caches session in an SSL_SESSION structure
5672 support is transparent because tickets are now stored in the encoded
5675 The SSL_CTX structure automatically generates keys for ticket
5676 protection in servers so again support should be possible
5677 with no application modification.
5679 If a client or server wishes to disable RFC4507 support then the option
5680 SSL_OP_NO_TICKET can be set.
5682 Add a TLS extension debugging callback to allow the contents of any client
5683 or server extensions to be examined.
5685 This work was sponsored by Google.
5688 *) Add initial support for TLS extensions, specifically for the server_name
5689 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5690 have new members for a host name. The SSL data structure has an
5691 additional member SSL_CTX *initial_ctx so that new sessions can be
5692 stored in that context to allow for session resumption, even after the
5693 SSL has been switched to a new SSL_CTX in reaction to a client's
5694 server_name extension.
5696 New functions (subject to change):
5698 SSL_get_servername()
5699 SSL_get_servername_type()
5702 New CTRL codes and macros (subject to change):
5704 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5705 - SSL_CTX_set_tlsext_servername_callback()
5706 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5707 - SSL_CTX_set_tlsext_servername_arg()
5708 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5710 openssl s_client has a new '-servername ...' option.
5712 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5713 '-key2 ...', '-servername_fatal' (subject to change). This allows
5714 testing the HostName extension for a specific single host name ('-cert'
5715 and '-key' remain fallbacks for handshakes without HostName
5716 negotiation). If the unrecognized_name alert has to be sent, this by
5717 default is a warning; it becomes fatal with the '-servername_fatal'
5720 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
5722 *) Add AES and SSE2 assembly language support to VC++ build.
5725 *) Mitigate attack on final subtraction in Montgomery reduction.
5728 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
5729 (which previously caused an internal error).
5732 *) Squeeze another 10% out of IGE mode when in != out.
5735 *) AES IGE mode speedup.
5736 [Dean Gaudet (Google)]
5738 *) Add the Korean symmetric 128-bit cipher SEED (see
5739 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
5740 add SEED ciphersuites from RFC 4162:
5742 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
5743 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
5744 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
5745 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
5747 To minimize changes between patchlevels in the OpenSSL 0.9.8
5748 series, SEED remains excluded from compilation unless OpenSSL
5749 is configured with 'enable-seed'.
5750 [KISA, Bodo Moeller]
5752 *) Mitigate branch prediction attacks, which can be practical if a
5753 single processor is shared, allowing a spy process to extract
5754 information. For detailed background information, see
5755 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
5756 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
5757 and Necessary Software Countermeasures"). The core of the change
5758 are new versions BN_div_no_branch() and
5759 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
5760 respectively, which are slower, but avoid the security-relevant
5761 conditional branches. These are automatically called by BN_div()
5762 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
5763 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
5764 remove a conditional branch.
5766 BN_FLG_CONSTTIME is the new name for the previous
5767 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
5768 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
5769 in the exponent causes BN_mod_exp_mont() to use the alternative
5770 implementation in BN_mod_exp_mont_consttime().) The old name
5771 remains as a deprecated alias.
5773 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
5774 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
5775 constant-time implementations for more than just exponentiation.
5776 Here too the old name is kept as a deprecated alias.
5778 BN_BLINDING_new() will now use BN_dup() for the modulus so that
5779 the BN_BLINDING structure gets an independent copy of the
5780 modulus. This means that the previous "BIGNUM *m" argument to
5781 BN_BLINDING_new() and to BN_BLINDING_create_param() now
5782 essentially becomes "const BIGNUM *m", although we can't actually
5783 change this in the header file before 0.9.9. It allows
5784 RSA_setup_blinding() to use BN_with_flags() on the modulus to
5785 enable BN_FLG_CONSTTIME.
5787 [Matthew D Wood (Intel Corp)]
5789 *) In the SSL/TLS server implementation, be strict about session ID
5790 context matching (which matters if an application uses a single
5791 external cache for different purposes). Previously,
5792 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
5793 set. This did ensure strict client verification, but meant that,
5794 with applications using a single external cache for quite
5795 different requirements, clients could circumvent ciphersuite
5796 restrictions for a given session ID context by starting a session
5797 in a different context.
5800 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
5801 a ciphersuite string such as "DEFAULT:RSA" cannot enable
5802 authentication-only ciphersuites.
5805 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
5806 not complete and could lead to a possible single byte overflow
5807 (CVE-2007-5135) [Ben Laurie]
5809 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
5811 *) Since AES128 and AES256 (and similarly Camellia128 and
5812 Camellia256) share a single mask bit in the logic of
5813 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
5814 kludge to work properly if AES128 is available and AES256 isn't
5815 (or if Camellia128 is available and Camellia256 isn't).
5818 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
5819 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
5820 When a point or a seed is encoded in a BIT STRING, we need to
5821 prevent the removal of trailing zero bits to get the proper DER
5822 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
5823 of a NamedBitList, for which trailing 0 bits need to be removed.)
5826 *) Have SSL/TLS server implementation tolerate "mismatched" record
5827 protocol version while receiving ClientHello even if the
5828 ClientHello is fragmented. (The server can't insist on the
5829 particular protocol version it has chosen before the ServerHello
5830 message has informed the client about his choice.)
5833 *) Add RFC 3779 support.
5834 [Rob Austein for ARIN, Ben Laurie]
5836 *) Load error codes if they are not already present instead of using a
5837 static variable. This allows them to be cleanly unloaded and reloaded.
5838 Improve header file function name parsing.
5841 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
5842 or CAPABILITY handshake as required by RFCs.
5845 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
5847 *) Introduce limits to prevent malicious keys being able to
5848 cause a denial of service. (CVE-2006-2940)
5849 [Steve Henson, Bodo Moeller]
5851 *) Fix ASN.1 parsing of certain invalid structures that can result
5852 in a denial of service. (CVE-2006-2937) [Steve Henson]
5854 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
5855 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
5857 *) Fix SSL client code which could crash if connecting to a
5858 malicious SSLv2 server. (CVE-2006-4343)
5859 [Tavis Ormandy and Will Drewry, Google Security Team]
5861 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
5862 match only those. Before that, "AES256-SHA" would be interpreted
5863 as a pattern and match "AES128-SHA" too (since AES128-SHA got
5864 the same strength classification in 0.9.7h) as we currently only
5865 have a single AES bit in the ciphersuite description bitmap.
5866 That change, however, also applied to ciphersuite strings such as
5867 "RC4-MD5" that intentionally matched multiple ciphersuites --
5868 namely, SSL 2.0 ciphersuites in addition to the more common ones
5869 from SSL 3.0/TLS 1.0.
5871 So we change the selection algorithm again: Naming an explicit
5872 ciphersuite selects this one ciphersuite, and any other similar
5873 ciphersuite (same bitmap) from *other* protocol versions.
5874 Thus, "RC4-MD5" again will properly select both the SSL 2.0
5875 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
5877 Since SSL 2.0 does not have any ciphersuites for which the
5878 128/256 bit distinction would be relevant, this works for now.
5879 The proper fix will be to use different bits for AES128 and
5880 AES256, which would have avoided the problems from the beginning;
5881 however, bits are scarce, so we can only do this in a new release
5882 (not just a patchlevel) when we can change the SSL_CIPHER
5883 definition to split the single 'unsigned long mask' bitmap into
5884 multiple values to extend the available space.
5888 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
5890 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
5891 (CVE-2006-4339) [Ben Laurie and Google Security Team]
5893 *) Add AES IGE and biIGE modes.
5896 *) Change the Unix randomness entropy gathering to use poll() when
5897 possible instead of select(), since the latter has some
5898 undesirable limitations.
5899 [Darryl Miles via Richard Levitte and Bodo Moeller]
5901 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
5902 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
5903 cannot be implicitly activated as part of, e.g., the "AES" alias.
5904 However, please upgrade to OpenSSL 0.9.9[-dev] for
5905 non-experimental use of the ECC ciphersuites to get TLS extension
5906 support, which is required for curve and point format negotiation
5907 to avoid potential handshake problems.
5910 *) Disable rogue ciphersuites:
5912 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
5913 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
5914 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
5916 The latter two were purportedly from
5917 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
5920 Also deactivate the remaining ciphersuites from
5921 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
5922 unofficial, and the ID has long expired.
5925 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
5926 dual-core machines) and other potential thread-safety issues.
5929 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
5930 versions), which is now available for royalty-free use
5931 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
5932 Also, add Camellia TLS ciphersuites from RFC 4132.
5934 To minimize changes between patchlevels in the OpenSSL 0.9.8
5935 series, Camellia remains excluded from compilation unless OpenSSL
5936 is configured with 'enable-camellia'.
5939 *) Disable the padding bug check when compression is in use. The padding
5940 bug check assumes the first packet is of even length, this is not
5941 necessarily true if compression is enabled and can result in false
5942 positives causing handshake failure. The actual bug test is ancient
5943 code so it is hoped that implementations will either have fixed it by
5944 now or any which still have the bug do not support compression.
5947 Changes between 0.9.8a and 0.9.8b [04 May 2006]
5949 *) When applying a cipher rule check to see if string match is an explicit
5950 cipher suite and only match that one cipher suite if it is.
5953 *) Link in manifests for VC++ if needed.
5954 [Austin Ziegler <halostatue@gmail.com>]
5956 *) Update support for ECC-based TLS ciphersuites according to
5957 draft-ietf-tls-ecc-12.txt with proposed changes (but without
5958 TLS extensions, which are supported starting with the 0.9.9
5959 branch, not in the OpenSSL 0.9.8 branch).
5962 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
5963 opaque EVP_CIPHER_CTX handling.
5966 *) Fixes and enhancements to zlib compression code. We now only use
5967 "zlib1.dll" and use the default __cdecl calling convention on Win32
5968 to conform with the standards mentioned here:
5969 http://www.zlib.net/DLL_FAQ.txt
5970 Static zlib linking now works on Windows and the new --with-zlib-include
5971 --with-zlib-lib options to Configure can be used to supply the location
5972 of the headers and library. Gracefully handle case where zlib library
5976 *) Several fixes and enhancements to the OID generation code. The old code
5977 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
5978 handle numbers larger than ULONG_MAX, truncated printing and had a
5979 non standard OBJ_obj2txt() behaviour.
5982 *) Add support for building of engines under engine/ as shared libraries
5983 under VC++ build system.
5986 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
5987 Hopefully, we will not see any false combination of paths any more.
5990 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
5992 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
5993 (part of SSL_OP_ALL). This option used to disable the
5994 countermeasure against man-in-the-middle protocol-version
5995 rollback in the SSL 2.0 server implementation, which is a bad
5996 idea. (CVE-2005-2969)
5998 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
5999 for Information Security, National Institute of Advanced Industrial
6000 Science and Technology [AIST], Japan)]
6002 *) Add two function to clear and return the verify parameter flags.
6005 *) Keep cipherlists sorted in the source instead of sorting them at
6006 runtime, thus removing the need for a lock.
6009 *) Avoid some small subgroup attacks in Diffie-Hellman.
6010 [Nick Mathewson and Ben Laurie]
6012 *) Add functions for well-known primes.
6015 *) Extended Windows CE support.
6016 [Satoshi Nakamura and Andy Polyakov]
6018 *) Initialize SSL_METHOD structures at compile time instead of during
6019 runtime, thus removing the need for a lock.
6022 *) Make PKCS7_decrypt() work even if no certificate is supplied by
6023 attempting to decrypt each encrypted key in turn. Add support to
6027 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
6029 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
6032 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
6035 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
6036 key into the same file any more.
6039 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
6042 *) Add -utf8 command line and config file option to 'ca'.
6043 [Stefan <stf@udoma.org]
6045 *) Removed the macro des_crypt(), as it seems to conflict with some
6046 libraries. Use DES_crypt().
6049 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
6050 involves renaming the source and generated shared-libs for
6051 both. The engines will accept the corrected or legacy ids
6052 ('ncipher' and '4758_cca' respectively) when binding. NB,
6053 this only applies when building 'shared'.
6054 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
6056 *) Add attribute functions to EVP_PKEY structure. Modify
6057 PKCS12_create() to recognize a CSP name attribute and
6058 use it. Make -CSP option work again in pkcs12 utility.
6061 *) Add new functionality to the bn blinding code:
6062 - automatic re-creation of the BN_BLINDING parameters after
6063 a fixed number of uses (currently 32)
6064 - add new function for parameter creation
6065 - introduce flags to control the update behaviour of the
6066 BN_BLINDING parameters
6067 - hide BN_BLINDING structure
6068 Add a second BN_BLINDING slot to the RSA structure to improve
6069 performance when a single RSA object is shared among several
6073 *) Add support for DTLS.
6074 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
6076 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
6077 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
6080 *) Remove buggy and incomplete DH cert support from
6081 ssl/ssl_rsa.c and ssl/s3_both.c
6084 *) Use SHA-1 instead of MD5 as the default digest algorithm for
6085 the apps/openssl applications.
6088 *) Compile clean with "-Wall -Wmissing-prototypes
6089 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
6090 DEBUG_SAFESTACK must also be set.
6093 *) Change ./Configure so that certain algorithms can be disabled by default.
6094 The new counterpiece to "no-xxx" is "enable-xxx".
6096 The patented RC5 and MDC2 algorithms will now be disabled unless
6097 "enable-rc5" and "enable-mdc2", respectively, are specified.
6099 (IDEA remains enabled despite being patented. This is because IDEA
6100 is frequently required for interoperability, and there is no license
6101 fee for non-commercial use. As before, "no-idea" can be used to
6102 avoid this algorithm.)
6106 *) Add processing of proxy certificates (see RFC 3820). This work was
6107 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
6108 EGEE (Enabling Grids for E-science in Europe).
6111 *) RC4 performance overhaul on modern architectures/implementations, such
6112 as Intel P4, IA-64 and AMD64.
6115 *) New utility extract-section.pl. This can be used specify an alternative
6116 section number in a pod file instead of having to treat each file as
6117 a separate case in Makefile. This can be done by adding two lines to the
6120 =for comment openssl_section:XXX
6122 The blank line is mandatory.
6126 *) New arguments -certform, -keyform and -pass for s_client and s_server
6127 to allow alternative format key and certificate files and passphrase
6131 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
6132 update associated structures and add various utility functions.
6134 Add new policy related verify parameters, include policy checking in
6135 standard verify code. Enhance 'smime' application with extra parameters
6136 to support policy checking and print out.
6139 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
6140 Nehemiah processors. These extensions support AES encryption in hardware
6141 as well as RNG (though RNG support is currently disabled).
6142 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
6144 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
6147 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
6148 [Andy Polyakov and a number of other people]
6150 *) Improved PowerPC platform support. Most notably BIGNUM assembler
6151 implementation contributed by IBM.
6152 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
6154 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
6155 exponent rather than 'unsigned long'. There is a corresponding change to
6156 the new 'rsa_keygen' element of the RSA_METHOD structure.
6157 [Jelte Jansen, Geoff Thorpe]
6159 *) Functionality for creating the initial serial number file is now
6160 moved from CA.pl to the 'ca' utility with a new option -create_serial.
6162 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
6163 number file to 1, which is bound to cause problems. To avoid
6164 the problems while respecting compatibility between different 0.9.7
6165 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
6166 CA.pl for serial number initialization. With the new release 0.9.8,
6167 we can fix the problem directly in the 'ca' utility.)
6170 *) Reduced header interdependencies by declaring more opaque objects in
6171 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
6172 give fewer recursive includes, which could break lazy source code - so
6173 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
6174 developers should define this symbol when building and using openssl to
6175 ensure they track the recommended behaviour, interfaces, [etc], but
6176 backwards-compatible behaviour prevails when this isn't defined.
6179 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
6182 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
6183 This will generate a random key of the appropriate length based on the
6184 cipher context. The EVP_CIPHER can provide its own random key generation
6185 routine to support keys of a specific form. This is used in the des and
6186 3des routines to generate a key of the correct parity. Update S/MIME
6187 code to use new functions and hence generate correct parity DES keys.
6188 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
6189 valid (weak or incorrect parity).
6192 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
6193 as looking them up. This is useful when the verified structure may contain
6194 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
6195 present unless the new PKCS7_NO_CRL flag is asserted.
6198 *) Extend ASN1 oid configuration module. It now additionally accepts the
6201 shortName = some long name, 1.2.3.4
6204 *) Reimplemented the BN_CTX implementation. There is now no more static
6205 limitation on the number of variables it can handle nor the depth of the
6206 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
6207 information can now expand as required, and rather than having a single
6208 static array of bignums, BN_CTX now uses a linked-list of such arrays
6209 allowing it to expand on demand whilst maintaining the usefulness of
6210 BN_CTX's "bundling".
6213 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
6214 to allow all RSA operations to function using a single BN_CTX.
6217 *) Preliminary support for certificate policy evaluation and checking. This
6218 is initially intended to pass the tests outlined in "Conformance Testing
6219 of Relying Party Client Certificate Path Processing Logic" v1.07.
6222 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
6223 remained unused and not that useful. A variety of other little bignum
6224 tweaks and fixes have also been made continuing on from the audit (see
6228 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
6229 associated ASN1, EVP and SSL functions and old ASN1 macros.
6232 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
6233 and this should never fail. So the return value from the use of
6234 BN_set_word() (which can fail due to needless expansion) is now deprecated;
6235 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
6238 *) BN_CTX_get() should return zero-valued bignums, providing the same
6239 initialised value as BN_new().
6240 [Geoff Thorpe, suggested by Ulf Möller]
6242 *) Support for inhibitAnyPolicy certificate extension.
6245 *) An audit of the BIGNUM code is underway, for which debugging code is
6246 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
6247 is considered valid when processing BIGNUMs, and causes execution to
6248 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
6249 further steps are taken to deliberately pollute unused data in BIGNUM
6250 structures to try and expose faulty code further on. For now, openssl will
6251 (in its default mode of operation) continue to tolerate the inconsistent
6252 forms that it has tolerated in the past, but authors and packagers should
6253 consider trying openssl and their own applications when compiled with
6254 these debugging symbols defined. It will help highlight potential bugs in
6255 their own code, and will improve the test coverage for OpenSSL itself. At
6256 some point, these tighter rules will become openssl's default to improve
6257 maintainability, though the assert()s and other overheads will remain only
6258 in debugging configurations. See bn.h for more details.
6259 [Geoff Thorpe, Nils Larsch, Ulf Möller]
6261 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
6262 that can only be obtained through BN_CTX_new() (which implicitly
6263 initialises it). The presence of this function only made it possible
6264 to overwrite an existing structure (and cause memory leaks).
6267 *) Because of the callback-based approach for implementing LHASH as a
6268 template type, lh_insert() adds opaque objects to hash-tables and
6269 lh_doall() or lh_doall_arg() are typically used with a destructor callback
6270 to clean up those corresponding objects before destroying the hash table
6271 (and losing the object pointers). So some over-zealous constifications in
6272 LHASH have been relaxed so that lh_insert() does not take (nor store) the
6273 objects as "const" and the lh_doall[_arg] callback wrappers are not
6274 prototyped to have "const" restrictions on the object pointers they are
6275 given (and so aren't required to cast them away any more).
6278 *) The tmdiff.h API was so ugly and minimal that our own timing utility
6279 (speed) prefers to use its own implementation. The two implementations
6280 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
6281 its object type properly exposed (MS_TM) instead of casting to/from "char
6282 *". This may still change yet if someone realises MS_TM and "ms_time_***"
6283 aren't necessarily the greatest nomenclatures - but this is what was used
6284 internally to the implementation so I've used that for now.
6287 *) Ensure that deprecated functions do not get compiled when
6288 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
6289 the self-tests were still using deprecated key-generation functions so
6290 these have been updated also.
6293 *) Reorganise PKCS#7 code to separate the digest location functionality
6294 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
6295 New function PKCS7_set_digest() to set the digest type for PKCS#7
6296 digestedData type. Add additional code to correctly generate the
6297 digestedData type and add support for this type in PKCS7 initialization
6301 *) New function PKCS7_set0_type_other() this initializes a PKCS7
6302 structure of type "other".
6305 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
6306 sure the loop does correctly stop and breaking ("division by zero")
6307 modulus operations are not performed. The (pre-generated) prime
6308 table crypto/bn/bn_prime.h was already correct, but it could not be
6309 re-generated on some platforms because of the "division by zero"
6310 situation in the script.
6311 [Ralf S. Engelschall]
6313 *) Update support for ECC-based TLS ciphersuites according to
6314 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
6315 SHA-1 now is only used for "small" curves (where the
6316 representation of a field element takes up to 24 bytes); for
6317 larger curves, the field element resulting from ECDH is directly
6318 used as premaster secret.
6319 [Douglas Stebila (Sun Microsystems Laboratories)]
6321 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
6322 curve secp160r1 to the tests.
6323 [Douglas Stebila (Sun Microsystems Laboratories)]
6325 *) Add the possibility to load symbols globally with DSO.
6326 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
6328 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
6329 control of the error stack.
6332 *) Add support for STORE in ENGINE.
6335 *) Add the STORE type. The intention is to provide a common interface
6336 to certificate and key stores, be they simple file-based stores, or
6337 HSM-type store, or LDAP stores, or...
6338 NOTE: The code is currently UNTESTED and isn't really used anywhere.
6341 *) Add a generic structure called OPENSSL_ITEM. This can be used to
6342 pass a list of arguments to any function as well as provide a way
6343 for a function to pass data back to the caller.
6346 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
6347 works like BUF_strdup() but can be used to duplicate a portion of
6348 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
6352 *) Add the function sk_find_ex() which works like sk_find(), but will
6353 return an index to an element even if an exact match couldn't be
6354 found. The index is guaranteed to point at the element where the
6355 searched-for key would be inserted to preserve sorting order.
6358 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
6359 takes an extra flags argument for optional functionality. Currently,
6360 the following flags are defined:
6362 OBJ_BSEARCH_VALUE_ON_NOMATCH
6363 This one gets OBJ_bsearch_ex() to return a pointer to the first
6364 element where the comparing function returns a negative or zero
6367 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
6368 This one gets OBJ_bsearch_ex() to return a pointer to the first
6369 element where the comparing function returns zero. This is useful
6370 if there are more than one element where the comparing function
6374 *) Make it possible to create self-signed certificates with 'openssl ca'
6375 in such a way that the self-signed certificate becomes part of the
6376 CA database and uses the same mechanisms for serial number generation
6377 as all other certificate signing. The new flag '-selfsign' enables
6378 this functionality. Adapt CA.sh and CA.pl.in.
6381 *) Add functionality to check the public key of a certificate request
6382 against a given private. This is useful to check that a certificate
6383 request can be signed by that key (self-signing).
6386 *) Make it possible to have multiple active certificates with the same
6387 subject in the CA index file. This is done only if the keyword
6388 'unique_subject' is set to 'no' in the main CA section (default
6389 if 'CA_default') of the configuration file. The value is saved
6390 with the database itself in a separate index attribute file,
6391 named like the index file with '.attr' appended to the name.
6394 *) Generate multi-valued AVAs using '+' notation in config files for
6398 *) Support for nameConstraints certificate extension.
6401 *) Support for policyConstraints certificate extension.
6404 *) Support for policyMappings certificate extension.
6407 *) Make sure the default DSA_METHOD implementation only uses its
6408 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
6409 and change its own handlers to be NULL so as to remove unnecessary
6410 indirection. This lets alternative implementations fallback to the
6411 default implementation more easily.
6414 *) Support for directoryName in GeneralName related extensions
6418 *) Make it possible to link applications using Makefile.shared.
6419 Make that possible even when linking against static libraries!
6422 *) Support for single pass processing for S/MIME signing. This now
6423 means that S/MIME signing can be done from a pipe, in addition
6424 cleartext signing (multipart/signed type) is effectively streaming
6425 and the signed data does not need to be all held in memory.
6427 This is done with a new flag PKCS7_STREAM. When this flag is set
6428 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
6429 is done after the data is output (and digests calculated) in
6430 SMIME_write_PKCS7().
6433 *) Add full support for -rpath/-R, both in shared libraries and
6434 applications, at least on the platforms where it's known how
6438 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
6439 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
6440 will now compute a table of multiples of the generator that
6441 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
6442 faster (notably in the case of a single point multiplication,
6443 scalar * generator).
6444 [Nils Larsch, Bodo Moeller]
6446 *) IPv6 support for certificate extensions. The various extensions
6447 which use the IP:a.b.c.d can now take IPv6 addresses using the
6448 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
6452 *) Added an ENGINE that implements RSA by performing private key
6453 exponentiations with the GMP library. The conversions to and from
6454 GMP's mpz_t format aren't optimised nor are any montgomery forms
6455 cached, and on x86 it appears OpenSSL's own performance has caught up.
6456 However there are likely to be other architectures where GMP could
6457 provide a boost. This ENGINE is not built in by default, but it can be
6458 specified at Configure time and should be accompanied by the necessary
6459 linker additions, eg;
6460 ./config -DOPENSSL_USE_GMP -lgmp
6463 *) "openssl engine" will not display ENGINE/DSO load failure errors when
6464 testing availability of engines with "-t" - the old behaviour is
6465 produced by increasing the feature's verbosity with "-tt".
6468 *) ECDSA routines: under certain error conditions uninitialized BN objects
6469 could be freed. Solution: make sure initialization is performed early
6470 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
6474 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
6475 and DH_METHOD (eg. by ENGINE implementations) to override the normal
6476 software implementations. For DSA and DH, parameter generation can
6477 also be overridden by providing the appropriate method callbacks.
6480 *) Change the "progress" mechanism used in key-generation and
6481 primality testing to functions that take a new BN_GENCB pointer in
6482 place of callback/argument pairs. The new API functions have "_ex"
6483 postfixes and the older functions are reimplemented as wrappers for
6484 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
6485 declarations of the old functions to help (graceful) attempts to
6486 migrate to the new functions. Also, the new key-generation API
6487 functions operate on a caller-supplied key-structure and return
6488 success/failure rather than returning a key or NULL - this is to
6489 help make "keygen" another member function of RSA_METHOD etc.
6491 Example for using the new callback interface:
6493 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
6497 BN_GENCB_set(&my_cb, my_callback, my_arg);
6499 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
6500 /* For the meaning of a, b in calls to my_callback(), see the
6501 * documentation of the function that calls the callback.
6502 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
6503 * my_callback should return 1 if it wants BN_is_prime_ex()
6504 * to continue, or 0 to stop.
6509 *) Change the ZLIB compression method to be stateful, and make it
6510 available to TLS with the number defined in
6511 draft-ietf-tls-compression-04.txt.
6514 *) Add the ASN.1 structures and functions for CertificatePair, which
6515 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
6517 CertificatePair ::= SEQUENCE {
6518 forward [0] Certificate OPTIONAL,
6519 reverse [1] Certificate OPTIONAL,
6520 -- at least one of the pair shall be present -- }
6522 Also implement the PEM functions to read and write certificate
6523 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
6525 This needed to be defined, mostly for the sake of the LDAP
6526 attribute crossCertificatePair, but may prove useful elsewhere as
6530 *) Make it possible to inhibit symlinking of shared libraries in
6531 Makefile.shared, for Cygwin's sake.
6534 *) Extend the BIGNUM API by creating a function
6535 void BN_set_negative(BIGNUM *a, int neg);
6536 and a macro that behave like
6537 int BN_is_negative(const BIGNUM *a);
6539 to avoid the need to access 'a->neg' directly in applications.
6542 *) Implement fast modular reduction for pseudo-Mersenne primes
6543 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
6544 EC_GROUP_new_curve_GFp() will now automatically use this
6546 [Nils Larsch <nla@trustcenter.de>]
6548 *) Add new lock type (CRYPTO_LOCK_BN).
6551 *) Change the ENGINE framework to automatically load engines
6552 dynamically from specific directories unless they could be
6553 found to already be built in or loaded. Move all the
6554 current engines except for the cryptodev one to a new
6556 The engines in engines/ are built as shared libraries if
6557 the "shared" options was given to ./Configure or ./config.
6558 Otherwise, they are inserted in libcrypto.a.
6559 /usr/local/ssl/engines is the default directory for dynamic
6560 engines, but that can be overridden at configure time through
6561 the usual use of --prefix and/or --openssldir, and at run
6562 time with the environment variable OPENSSL_ENGINES.
6563 [Geoff Thorpe and Richard Levitte]
6565 *) Add Makefile.shared, a helper makefile to build shared
6566 libraries. Adapt Makefile.org.
6569 *) Add version info to Win32 DLLs.
6570 [Peter 'Luna' Runestig" <peter@runestig.com>]
6572 *) Add new 'medium level' PKCS#12 API. Certificates and keys
6573 can be added using this API to created arbitrary PKCS#12
6574 files while avoiding the low level API.
6576 New options to PKCS12_create(), key or cert can be NULL and
6577 will then be omitted from the output file. The encryption
6578 algorithm NIDs can be set to -1 for no encryption, the mac
6579 iteration count can be set to 0 to omit the mac.
6581 Enhance pkcs12 utility by making the -nokeys and -nocerts
6582 options work when creating a PKCS#12 file. New option -nomac
6583 to omit the mac, NONE can be set for an encryption algorithm.
6584 New code is modified to use the enhanced PKCS12_create()
6585 instead of the low level API.
6588 *) Extend ASN1 encoder to support indefinite length constructed
6589 encoding. This can output sequences tags and octet strings in
6590 this form. Modify pk7_asn1.c to support indefinite length
6591 encoding. This is experimental and needs additional code to
6592 be useful, such as an ASN1 bio and some enhanced streaming
6595 Extend template encode functionality so that tagging is passed
6596 down to the template encoder.
6599 *) Let 'openssl req' fail if an argument to '-newkey' is not
6600 recognized instead of using RSA as a default.
6603 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
6604 As these are not official, they are not included in "ALL";
6605 the "ECCdraft" ciphersuite group alias can be used to select them.
6606 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
6608 *) Add ECDH engine support.
6609 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
6611 *) Add ECDH in new directory crypto/ecdh/.
6612 [Douglas Stebila (Sun Microsystems Laboratories)]
6614 *) Let BN_rand_range() abort with an error after 100 iterations
6615 without success (which indicates a broken PRNG).
6618 *) Change BN_mod_sqrt() so that it verifies that the input value
6619 is really the square of the return value. (Previously,
6620 BN_mod_sqrt would show GIGO behaviour.)
6623 *) Add named elliptic curves over binary fields from X9.62, SECG,
6624 and WAP/WTLS; add OIDs that were still missing.
6626 [Sheueling Chang Shantz and Douglas Stebila
6627 (Sun Microsystems Laboratories)]
6629 *) Extend the EC library for elliptic curves over binary fields
6630 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
6633 EC_GF2m_simple_method
6637 EC_GROUP_new_curve_GF2m
6638 EC_GROUP_set_curve_GF2m
6639 EC_GROUP_get_curve_GF2m
6640 EC_POINT_set_affine_coordinates_GF2m
6641 EC_POINT_get_affine_coordinates_GF2m
6642 EC_POINT_set_compressed_coordinates_GF2m
6644 Point compression for binary fields is disabled by default for
6645 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
6648 As binary polynomials are represented as BIGNUMs, various members
6649 of the EC_GROUP and EC_POINT data structures can be shared
6650 between the implementations for prime fields and binary fields;
6651 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
6652 are essentially identical to their ..._GFp counterparts.
6653 (For simplicity, the '..._GFp' prefix has been dropped from
6654 various internal method names.)
6656 An internal 'field_div' method (similar to 'field_mul' and
6657 'field_sqr') has been added; this is used only for binary fields.
6659 [Sheueling Chang Shantz and Douglas Stebila
6660 (Sun Microsystems Laboratories)]
6662 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
6663 through methods ('mul', 'precompute_mult').
6665 The generic implementations (now internally called 'ec_wNAF_mul'
6666 and 'ec_wNAF_precomputed_mult') remain the default if these
6667 methods are undefined.
6669 [Sheueling Chang Shantz and Douglas Stebila
6670 (Sun Microsystems Laboratories)]
6672 *) New function EC_GROUP_get_degree, which is defined through
6673 EC_METHOD. For curves over prime fields, this returns the bit
6674 length of the modulus.
6676 [Sheueling Chang Shantz and Douglas Stebila
6677 (Sun Microsystems Laboratories)]
6679 *) New functions EC_GROUP_dup, EC_POINT_dup.
6680 (These simply call ..._new and ..._copy).
6682 [Sheueling Chang Shantz and Douglas Stebila
6683 (Sun Microsystems Laboratories)]
6685 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
6686 Polynomials are represented as BIGNUMs (where the sign bit is not
6687 used) in the following functions [macros]:
6690 BN_GF2m_sub [= BN_GF2m_add]
6691 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
6692 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
6693 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
6695 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
6696 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
6697 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
6698 BN_GF2m_cmp [= BN_ucmp]
6700 (Note that only the 'mod' functions are actually for fields GF(2^m).
6701 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
6703 For some functions, an the irreducible polynomial defining a
6704 field can be given as an 'unsigned int[]' with strictly
6705 decreasing elements giving the indices of those bits that are set;
6706 i.e., p[] represents the polynomial
6707 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
6709 p[0] > p[1] > ... > p[k] = 0.
6710 This applies to the following functions:
6715 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
6716 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
6718 BN_GF2m_mod_sqrt_arr
6719 BN_GF2m_mod_solve_quad_arr
6723 Conversion can be performed by the following functions:
6728 bntest.c has additional tests for binary polynomial arithmetic.
6730 Two implementations for BN_GF2m_mod_div() are available.
6731 The default algorithm simply uses BN_GF2m_mod_inv() and
6732 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
6733 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
6734 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
6736 [Sheueling Chang Shantz and Douglas Stebila
6737 (Sun Microsystems Laboratories)]
6739 *) Add new error code 'ERR_R_DISABLED' that can be used when some
6740 functionality is disabled at compile-time.
6741 [Douglas Stebila <douglas.stebila@sun.com>]
6743 *) Change default behaviour of 'openssl asn1parse' so that more
6744 information is visible when viewing, e.g., a certificate:
6746 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
6747 mode the content of non-printable OCTET STRINGs is output in a
6748 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
6749 avoid the appearance of a printable string.
6750 [Nils Larsch <nla@trustcenter.de>]
6752 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
6754 EC_GROUP_set_asn1_flag()
6755 EC_GROUP_get_asn1_flag()
6756 EC_GROUP_set_point_conversion_form()
6757 EC_GROUP_get_point_conversion_form()
6758 These control ASN1 encoding details:
6759 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
6760 has been set to OPENSSL_EC_NAMED_CURVE.
6761 - Points are encoded in uncompressed form by default; options for
6762 asn1_for are as for point2oct, namely
6763 POINT_CONVERSION_COMPRESSED
6764 POINT_CONVERSION_UNCOMPRESSED
6765 POINT_CONVERSION_HYBRID
6767 Also add 'seed' and 'seed_len' members to EC_GROUP with access
6770 EC_GROUP_get0_seed()
6771 EC_GROUP_get_seed_len()
6772 This is used only for ASN1 purposes (so far).
6773 [Nils Larsch <nla@trustcenter.de>]
6775 *) Add 'field_type' member to EC_METHOD, which holds the NID
6776 of the appropriate field type OID. The new function
6777 EC_METHOD_get_field_type() returns this value.
6778 [Nils Larsch <nla@trustcenter.de>]
6783 EC_POINT_point2hex()
6784 EC_POINT_hex2point()
6785 providing useful interfaces to EC_POINT_point2oct() and
6786 EC_POINT_oct2point().
6787 [Nils Larsch <nla@trustcenter.de>]
6789 *) Change internals of the EC library so that the functions
6790 EC_GROUP_set_generator()
6791 EC_GROUP_get_generator()
6792 EC_GROUP_get_order()
6793 EC_GROUP_get_cofactor()
6794 are implemented directly in crypto/ec/ec_lib.c and not dispatched
6795 to methods, which would lead to unnecessary code duplication when
6796 adding different types of curves.
6797 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
6799 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
6800 arithmetic, and such that modified wNAFs are generated
6801 (which avoid length expansion in many cases).
6804 *) Add a function EC_GROUP_check_discriminant() (defined via
6805 EC_METHOD) that verifies that the curve discriminant is non-zero.
6807 Add a function EC_GROUP_check() that makes some sanity tests
6808 on a EC_GROUP, its generator and order. This includes
6809 EC_GROUP_check_discriminant().
6810 [Nils Larsch <nla@trustcenter.de>]
6812 *) Add ECDSA in new directory crypto/ecdsa/.
6814 Add applications 'openssl ecparam' and 'openssl ecdsa'
6815 (these are based on 'openssl dsaparam' and 'openssl dsa').
6817 ECDSA support is also included in various other files across the
6818 library. Most notably,
6819 - 'openssl req' now has a '-newkey ecdsa:file' option;
6820 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
6821 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
6822 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
6823 them suitable for ECDSA where domain parameters must be
6824 extracted before the specific public key;
6825 - ECDSA engine support has been added.
6826 [Nils Larsch <nla@trustcenter.de>]
6828 *) Include some named elliptic curves, and add OIDs from X9.62,
6829 SECG, and WAP/WTLS. Each curve can be obtained from the new
6831 EC_GROUP_new_by_curve_name(),
6832 and the list of available named curves can be obtained with
6833 EC_get_builtin_curves().
6834 Also add a 'curve_name' member to EC_GROUP objects, which can be
6836 EC_GROUP_set_curve_name()
6837 EC_GROUP_get_curve_name()
6838 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
6840 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6841 was actually never needed) and in BN_mul(). The removal in BN_mul()
6842 required a small change in bn_mul_part_recursive() and the addition
6843 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6844 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6845 bn_sub_words() and bn_add_words() except they take arrays with
6849 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
6851 *) Cleanse PEM buffers before freeing them since they may contain
6853 [Benjamin Bennett <ben@psc.edu>]
6855 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
6856 a ciphersuite string such as "DEFAULT:RSA" cannot enable
6857 authentication-only ciphersuites.
6860 *) Since AES128 and AES256 share a single mask bit in the logic of
6861 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
6862 kludge to work properly if AES128 is available and AES256 isn't.
6865 *) Expand security boundary to match 1.1.1 module.
6868 *) Remove redundant features: hash file source, editing of test vectors
6869 modify fipsld to use external fips_premain.c signature.
6872 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
6873 run algorithm test programs.
6876 *) Make algorithm test programs more tolerant of whitespace.
6879 *) Have SSL/TLS server implementation tolerate "mismatched" record
6880 protocol version while receiving ClientHello even if the
6881 ClientHello is fragmented. (The server can't insist on the
6882 particular protocol version it has chosen before the ServerHello
6883 message has informed the client about his choice.)
6886 *) Load error codes if they are not already present instead of using a
6887 static variable. This allows them to be cleanly unloaded and reloaded.
6890 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
6892 *) Introduce limits to prevent malicious keys being able to
6893 cause a denial of service. (CVE-2006-2940)
6894 [Steve Henson, Bodo Moeller]
6896 *) Fix ASN.1 parsing of certain invalid structures that can result
6897 in a denial of service. (CVE-2006-2937) [Steve Henson]
6899 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
6900 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
6902 *) Fix SSL client code which could crash if connecting to a
6903 malicious SSLv2 server. (CVE-2006-4343)
6904 [Tavis Ormandy and Will Drewry, Google Security Team]
6906 *) Change ciphersuite string processing so that an explicit
6907 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
6908 will no longer include "AES128-SHA"), and any other similar
6909 ciphersuite (same bitmap) from *other* protocol versions (so that
6910 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
6911 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
6912 changes from 0.9.8b and 0.9.8d.
6915 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
6917 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
6918 (CVE-2006-4339) [Ben Laurie and Google Security Team]
6920 *) Change the Unix randomness entropy gathering to use poll() when
6921 possible instead of select(), since the latter has some
6922 undesirable limitations.
6923 [Darryl Miles via Richard Levitte and Bodo Moeller]
6925 *) Disable rogue ciphersuites:
6927 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
6928 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
6929 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
6931 The latter two were purportedly from
6932 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
6935 Also deactivate the remaining ciphersuites from
6936 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
6937 unofficial, and the ID has long expired.
6940 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
6941 dual-core machines) and other potential thread-safety issues.
6944 Changes between 0.9.7i and 0.9.7j [04 May 2006]
6946 *) Adapt fipsld and the build system to link against the validated FIPS
6947 module in FIPS mode.
6950 *) Fixes for VC++ 2005 build under Windows.
6953 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
6954 from a Windows bash shell such as MSYS. It is autodetected from the
6955 "config" script when run from a VC++ environment. Modify standard VC++
6956 build to use fipscanister.o from the GNU make build.
6959 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
6961 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
6962 The value now differs depending on if you build for FIPS or not.
6963 BEWARE! A program linked with a shared FIPSed libcrypto can't be
6964 safely run with a non-FIPSed libcrypto, as it may crash because of
6965 the difference induced by this change.
6968 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
6970 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
6971 (part of SSL_OP_ALL). This option used to disable the
6972 countermeasure against man-in-the-middle protocol-version
6973 rollback in the SSL 2.0 server implementation, which is a bad
6974 idea. (CVE-2005-2969)
6976 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
6977 for Information Security, National Institute of Advanced Industrial
6978 Science and Technology [AIST], Japan)]
6980 *) Minimal support for X9.31 signatures and PSS padding modes. This is
6981 mainly for FIPS compliance and not fully integrated at this stage.
6984 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
6985 the exponentiation using a fixed-length exponent. (Otherwise,
6986 the information leaked through timing could expose the secret key
6987 after many signatures; cf. Bleichenbacher's attack on DSA with
6991 *) Make a new fixed-window mod_exp implementation the default for
6992 RSA, DSA, and DH private-key operations so that the sequence of
6993 squares and multiplies and the memory access pattern are
6994 independent of the particular secret key. This will mitigate
6995 cache-timing and potential related attacks.
6997 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
6998 and this is automatically used by BN_mod_exp_mont() if the new flag
6999 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
7000 will use this BN flag for private exponents unless the flag
7001 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
7002 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
7004 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
7006 *) Change the client implementation for SSLv23_method() and
7007 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
7008 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
7009 (Previously, the SSL 2.0 backwards compatible Client Hello
7010 message format would be used even with SSL_OP_NO_SSLv2.)
7013 *) Add support for smime-type MIME parameter in S/MIME messages which some
7017 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
7018 a threadsafe manner. Modify rsa code to use new function and add calls
7019 to dsa and dh code (which had race conditions before).
7022 *) Include the fixed error library code in the C error file definitions
7023 instead of fixing them up at runtime. This keeps the error code
7024 structures constant.
7027 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
7029 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
7032 *) Fixes for newer kerberos headers. NB: the casts are needed because
7033 the 'length' field is signed on one version and unsigned on another
7034 with no (?) obvious way to tell the difference, without these VC++
7035 complains. Also the "definition" of FAR (blank) is no longer included
7036 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
7037 some needed definitions.
7040 *) Undo Cygwin change.
7043 *) Added support for proxy certificates according to RFC 3820.
7044 Because they may be a security thread to unaware applications,
7045 they must be explicitly allowed in run-time. See
7046 docs/HOWTO/proxy_certificates.txt for further information.
7049 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
7051 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
7052 server and client random values. Previously
7053 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
7054 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
7056 This change has negligible security impact because:
7058 1. Server and client random values still have 24 bytes of pseudo random
7061 2. Server and client random values are sent in the clear in the initial
7064 3. The master secret is derived using the premaster secret (48 bytes in
7065 size for static RSA ciphersuites) as well as client server and random
7068 The OpenSSL team would like to thank the UK NISCC for bringing this issue
7071 [Stephen Henson, reported by UK NISCC]
7073 *) Use Windows randomness collection on Cygwin.
7076 *) Fix hang in EGD/PRNGD query when communication socket is closed
7077 prematurely by EGD/PRNGD.
7078 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
7080 *) Prompt for pass phrases when appropriate for PKCS12 input format.
7083 *) Back-port of selected performance improvements from development
7084 branch, as well as improved support for PowerPC platforms.
7087 *) Add lots of checks for memory allocation failure, error codes to indicate
7088 failure and freeing up memory if a failure occurs.
7089 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
7091 *) Add new -passin argument to dgst.
7094 *) Perform some character comparisons of different types in X509_NAME_cmp:
7095 this is needed for some certificates that re-encode DNs into UTF8Strings
7096 (in violation of RFC3280) and can't or won't issue name rollover
7100 *) Make an explicit check during certificate validation to see that
7101 the CA setting in each certificate on the chain is correct. As a
7102 side effect always do the following basic checks on extensions,
7103 not just when there's an associated purpose to the check:
7105 - if there is an unhandled critical extension (unless the user
7106 has chosen to ignore this fault)
7107 - if the path length has been exceeded (if one is set at all)
7108 - that certain extensions fit the associated purpose (if one has
7112 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
7114 *) Avoid a race condition when CRLs are checked in a multi threaded
7115 environment. This would happen due to the reordering of the revoked
7116 entries during signature checking and serial number lookup. Now the
7117 encoding is cached and the serial number sort performed under a lock.
7118 Add new STACK function sk_is_sorted().
7121 *) Add Delta CRL to the extension code.
7124 *) Various fixes to s3_pkt.c so alerts are sent properly.
7125 [David Holmes <d.holmes@f5.com>]
7127 *) Reduce the chances of duplicate issuer name and serial numbers (in
7128 violation of RFC3280) using the OpenSSL certificate creation utilities.
7129 This is done by creating a random 64 bit value for the initial serial
7130 number when a serial number file is created or when a self signed
7131 certificate is created using 'openssl req -x509'. The initial serial
7132 number file is created using 'openssl x509 -next_serial' in CA.pl
7133 rather than being initialized to 1.
7136 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
7138 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
7139 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
7140 [Joe Orton, Steve Henson]
7142 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
7144 [Joe Orton, Steve Henson]
7146 *) Make it possible to have multiple active certificates with the same
7147 subject in the CA index file. This is done only if the keyword
7148 'unique_subject' is set to 'no' in the main CA section (default
7149 if 'CA_default') of the configuration file. The value is saved
7150 with the database itself in a separate index attribute file,
7151 named like the index file with '.attr' appended to the name.
7154 *) X509 verify fixes. Disable broken certificate workarounds when
7155 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
7156 keyUsage extension present. Don't accept CRLs with unhandled critical
7157 extensions: since verify currently doesn't process CRL extensions this
7158 rejects a CRL with *any* critical extensions. Add new verify error codes
7162 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
7163 A clarification of RFC2560 will require the use of OCTET STRINGs and
7164 some implementations cannot handle the current raw format. Since OpenSSL
7165 copies and compares OCSP nonces as opaque blobs without any attempt at
7166 parsing them this should not create any compatibility issues.
7169 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
7170 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
7171 this HMAC (and other) operations are several times slower than OpenSSL
7175 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
7176 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7178 *) Use the correct content when signing type "other".
7181 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
7183 *) Fix various bugs revealed by running the NISCC test suite:
7185 Stop out of bounds reads in the ASN1 code when presented with
7186 invalid tags (CVE-2003-0543 and CVE-2003-0544).
7188 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
7190 If verify callback ignores invalid public key errors don't try to check
7191 certificate signature with the NULL public key.
7195 *) New -ignore_err option in ocsp application to stop the server
7196 exiting on the first error in a request.
7199 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
7200 if the server requested one: as stated in TLS 1.0 and SSL 3.0
7204 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
7205 extra data after the compression methods not only for TLS 1.0
7206 but also for SSL 3.0 (as required by the specification).
7207 [Bodo Moeller; problem pointed out by Matthias Loepfe]
7209 *) Change X509_certificate_type() to mark the key as exported/exportable
7210 when it's 512 *bits* long, not 512 bytes.
7213 *) Change AES_cbc_encrypt() so it outputs exact multiple of
7214 blocks during encryption.
7217 *) Various fixes to base64 BIO and non blocking I/O. On write
7218 flushes were not handled properly if the BIO retried. On read
7219 data was not being buffered properly and had various logic bugs.
7220 This also affects blocking I/O when the data being decoded is a
7224 *) Various S/MIME bugfixes and compatibility changes:
7225 output correct application/pkcs7 MIME type if
7226 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
7227 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
7228 of files as .eml work). Correctly handle very long lines in MIME
7232 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
7234 *) Countermeasure against the Klima-Pokorny-Rosa extension of
7235 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
7236 a protocol version number mismatch like a decryption error
7237 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
7240 *) Turn on RSA blinding by default in the default implementation
7241 to avoid a timing attack. Applications that don't want it can call
7242 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
7243 They would be ill-advised to do so in most cases.
7244 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
7246 *) Change RSA blinding code so that it works when the PRNG is not
7247 seeded (in this case, the secret RSA exponent is abused as
7248 an unpredictable seed -- if it is not unpredictable, there
7249 is no point in blinding anyway). Make RSA blinding thread-safe
7250 by remembering the creator's thread ID in rsa->blinding and
7251 having all other threads use local one-time blinding factors
7252 (this requires more computation than sharing rsa->blinding, but
7253 avoids excessive locking; and if an RSA object is not shared
7254 between threads, blinding will still be very fast).
7257 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
7258 ENGINE as defaults for all supported algorithms irrespective of
7259 the 'flags' parameter. 'flags' is now honoured, so applications
7260 should make sure they are passing it correctly.
7263 *) Target "mingw" now allows native Windows code to be generated in
7264 the Cygwin environment as well as with the MinGW compiler.
7267 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
7269 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
7270 via timing by performing a MAC computation even if incorrect
7271 block cipher padding has been found. This is a countermeasure
7272 against active attacks where the attacker has to distinguish
7273 between bad padding and a MAC verification error. (CVE-2003-0078)
7275 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
7276 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
7277 Martin Vuagnoux (EPFL, Ilion)]
7279 *) Make the no-err option work as intended. The intention with no-err
7280 is not to have the whole error stack handling routines removed from
7281 libcrypto, it's only intended to remove all the function name and
7282 reason texts, thereby removing some of the footprint that may not
7283 be interesting if those errors aren't displayed anyway.
7285 NOTE: it's still possible for any application or module to have its
7286 own set of error texts inserted. The routines are there, just not
7287 used by default when no-err is given.
7290 *) Add support for FreeBSD on IA64.
7291 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
7293 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
7294 Kerberos function mit_des_cbc_cksum(). Before this change,
7295 the value returned by DES_cbc_cksum() was like the one from
7296 mit_des_cbc_cksum(), except the bytes were swapped.
7297 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
7299 *) Allow an application to disable the automatic SSL chain building.
7300 Before this a rather primitive chain build was always performed in
7301 ssl3_output_cert_chain(): an application had no way to send the
7302 correct chain if the automatic operation produced an incorrect result.
7304 Now the chain builder is disabled if either:
7306 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
7308 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
7310 The reasoning behind this is that an application would not want the
7311 auto chain building to take place if extra chain certificates are
7312 present and it might also want a means of sending no additional
7313 certificates (for example the chain has two certificates and the
7317 *) Add the possibility to build without the ENGINE framework.
7318 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7320 *) Under Win32 gmtime() can return NULL: check return value in
7321 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
7324 *) DSA routines: under certain error conditions uninitialized BN objects
7325 could be freed. Solution: make sure initialization is performed early
7326 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
7327 Nils Larsch <nla@trustcenter.de> via PR#459)
7330 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
7331 checked on reconnect on the client side, therefore session resumption
7332 could still fail with a "ssl session id is different" error. This
7333 behaviour is masked when SSL_OP_ALL is used due to
7334 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
7335 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7336 followup to PR #377.
7339 *) IA-32 assembler support enhancements: unified ELF targets, support
7340 for SCO/Caldera platforms, fix for Cygwin shared build.
7343 *) Add support for FreeBSD on sparc64. As a consequence, support for
7344 FreeBSD on non-x86 processors is separate from x86 processors on
7345 the config script, much like the NetBSD support.
7346 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
7348 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
7350 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
7353 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
7354 code (06) was taken as the first octet of the session ID and the last
7355 octet was ignored consequently. As a result SSLv2 client side session
7356 caching could not have worked due to the session ID mismatch between
7358 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7362 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
7363 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
7367 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
7368 seems that in spite of existing for more than a year, many application
7369 author have done nothing to provide the necessary callbacks, which
7370 means that this particular engine will not work properly anywhere.
7371 This is a very unfortunate situation which forces us, in the name
7372 of usability, to give the hw_ncipher.c a static lock, which is part
7374 NOTE: This is for the 0.9.7 series ONLY. This hack will never
7375 appear in 0.9.8 or later. We EXPECT application authors to have
7376 dealt properly with this when 0.9.8 is released (unless we actually
7377 make such changes in the libcrypto locking code that changes will
7378 have to be made anyway).
7381 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
7382 octets have been read, EOF or an error occurs. Without this change
7383 some truncated ASN1 structures will not produce an error.
7386 *) Disable Heimdal support, since it hasn't been fully implemented.
7387 Still give the possibility to force the use of Heimdal, but with
7388 warnings and a request that patches get sent to openssl-dev.
7391 *) Add the VC-CE target, introduce the WINCE sysname, and add
7392 INSTALL.WCE and appropriate conditionals to make it build.
7393 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7395 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
7396 cygssl-x.y.z.dll, where x, y and z are the major, minor and
7397 edit numbers of the version.
7398 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7400 *) Introduce safe string copy and catenation functions
7401 (BUF_strlcpy() and BUF_strlcat()).
7402 [Ben Laurie (CHATS) and Richard Levitte]
7404 *) Avoid using fixed-size buffers for one-line DNs.
7405 [Ben Laurie (CHATS)]
7407 *) Add BUF_MEM_grow_clean() to avoid information leakage when
7408 resizing buffers containing secrets, and use where appropriate.
7409 [Ben Laurie (CHATS)]
7411 *) Avoid using fixed size buffers for configuration file location.
7412 [Ben Laurie (CHATS)]
7414 *) Avoid filename truncation for various CA files.
7415 [Ben Laurie (CHATS)]
7417 *) Use sizeof in preference to magic numbers.
7418 [Ben Laurie (CHATS)]
7420 *) Avoid filename truncation in cert requests.
7421 [Ben Laurie (CHATS)]
7423 *) Add assertions to check for (supposedly impossible) buffer
7425 [Ben Laurie (CHATS)]
7427 *) Don't cache truncated DNS entries in the local cache (this could
7428 potentially lead to a spoofing attack).
7429 [Ben Laurie (CHATS)]
7431 *) Fix various buffers to be large enough for hex/decimal
7432 representations in a platform independent manner.
7433 [Ben Laurie (CHATS)]
7435 *) Add CRYPTO_realloc_clean() to avoid information leakage when
7436 resizing buffers containing secrets, and use where appropriate.
7437 [Ben Laurie (CHATS)]
7439 *) Add BIO_indent() to avoid much slightly worrying code to do
7441 [Ben Laurie (CHATS)]
7443 *) Convert sprintf()/BIO_puts() to BIO_printf().
7444 [Ben Laurie (CHATS)]
7446 *) buffer_gets() could terminate with the buffer only half
7448 [Ben Laurie (CHATS)]
7450 *) Add assertions to prevent user-supplied crypto functions from
7451 overflowing internal buffers by having large block sizes, etc.
7452 [Ben Laurie (CHATS)]
7454 *) New OPENSSL_assert() macro (similar to assert(), but enabled
7456 [Ben Laurie (CHATS)]
7458 *) Eliminate unused copy of key in RC4.
7459 [Ben Laurie (CHATS)]
7461 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
7462 [Ben Laurie (CHATS)]
7464 *) Fix off-by-one error in EGD path.
7465 [Ben Laurie (CHATS)]
7467 *) If RANDFILE path is too long, ignore instead of truncating.
7468 [Ben Laurie (CHATS)]
7470 *) Eliminate unused and incorrectly sized X.509 structure
7472 [Ben Laurie (CHATS)]
7474 *) Eliminate unused and dangerous function knumber().
7475 [Ben Laurie (CHATS)]
7477 *) Eliminate unused and dangerous structure, KSSL_ERR.
7478 [Ben Laurie (CHATS)]
7480 *) Protect against overlong session ID context length in an encoded
7481 session object. Since these are local, this does not appear to be
7483 [Ben Laurie (CHATS)]
7485 *) Change from security patch (see 0.9.6e below) that did not affect
7486 the 0.9.6 release series:
7488 Remote buffer overflow in SSL3 protocol - an attacker could
7489 supply an oversized master key in Kerberos-enabled versions.
7491 [Ben Laurie (CHATS)]
7493 *) Change the SSL kerb5 codes to match RFC 2712.
7496 *) Make -nameopt work fully for req and add -reqopt switch.
7497 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
7499 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
7500 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
7502 *) Make sure tests can be performed even if the corresponding algorithms
7503 have been removed entirely. This was also the last step to make
7504 OpenSSL compilable with DJGPP under all reasonable conditions.
7505 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
7507 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
7508 to allow version independent disabling of normally unselected ciphers,
7509 which may be activated as a side-effect of selecting a single cipher.
7511 (E.g., cipher list string "RSA" enables ciphersuites that are left
7512 out of "ALL" because they do not provide symmetric encryption.
7513 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
7514 [Lutz Jaenicke, Bodo Moeller]
7516 *) Add appropriate support for separate platform-dependent build
7517 directories. The recommended way to make a platform-dependent
7518 build directory is the following (tested on Linux), maybe with
7521 # Place yourself outside of the OpenSSL source tree. In
7522 # this example, the environment variable OPENSSL_SOURCE
7523 # is assumed to contain the absolute OpenSSL source directory.
7524 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
7525 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
7526 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
7527 mkdir -p `dirname $F`
7528 ln -s $OPENSSL_SOURCE/$F $F
7531 To be absolutely sure not to disturb the source tree, a "make clean"
7532 is a good thing. If it isn't successful, don't worry about it,
7533 it probably means the source directory is very clean.
7536 *) Make sure any ENGINE control commands make local copies of string
7537 pointers passed to them whenever necessary. Otherwise it is possible
7538 the caller may have overwritten (or deallocated) the original string
7539 data when a later ENGINE operation tries to use the stored values.
7540 [Götz Babin-Ebell <babinebell@trustcenter.de>]
7542 *) Improve diagnostics in file reading and command-line digests.
7543 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
7545 *) Add AES modes CFB and OFB to the object database. Correct an
7546 error in AES-CFB decryption.
7549 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
7550 allows existing EVP_CIPHER_CTX structures to be reused after
7551 calling EVP_*Final(). This behaviour is used by encryption
7552 BIOs and some applications. This has the side effect that
7553 applications must explicitly clean up cipher contexts with
7554 EVP_CIPHER_CTX_cleanup() or they will leak memory.
7557 *) Check the values of dna and dnb in bn_mul_recursive before calling
7558 bn_mul_comba (a non zero value means the a or b arrays do not contain
7559 n2 elements) and fallback to bn_mul_normal if either is not zero.
7562 *) Fix escaping of non-ASCII characters when using the -subj option
7563 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
7566 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
7567 form for "surname", serialNumber has no short form.
7568 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
7569 therefore remove "mail" short name for "internet 7".
7570 The OID for unique identifiers in X509 certificates is
7571 x500UniqueIdentifier, not uniqueIdentifier.
7572 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
7575 *) Add an "init" command to the ENGINE config module and auto initialize
7576 ENGINEs. Without any "init" command the ENGINE will be initialized
7577 after all ctrl commands have been executed on it. If init=1 the
7578 ENGINE is initialized at that point (ctrls before that point are run
7579 on the uninitialized ENGINE and after on the initialized one). If
7580 init=0 then the ENGINE will not be initialized at all.
7583 *) Fix the 'app_verify_callback' interface so that the user-defined
7584 argument is actually passed to the callback: In the
7585 SSL_CTX_set_cert_verify_callback() prototype, the callback
7586 declaration has been changed from
7589 int (*cb)(X509_STORE_CTX *,void *);
7590 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
7591 i=s->ctx->app_verify_callback(&ctx)
7592 has been changed into
7593 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
7595 To update applications using SSL_CTX_set_cert_verify_callback(),
7596 a dummy argument can be added to their callback functions.
7597 [D. K. Smetters <smetters@parc.xerox.com>]
7599 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
7600 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
7602 *) Add and OPENSSL_LOAD_CONF define which will cause
7603 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
7604 This allows older applications to transparently support certain
7605 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
7606 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
7607 load the config file and OPENSSL_add_all_algorithms_conf() which will
7608 always load it have also been added.
7611 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
7612 Adjust NIDs and EVP layer.
7613 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7615 *) Config modules support in openssl utility.
7617 Most commands now load modules from the config file,
7618 though in a few (such as version) this isn't done
7619 because it couldn't be used for anything.
7621 In the case of ca and req the config file used is
7622 the same as the utility itself: that is the -config
7623 command line option can be used to specify an
7627 *) Move default behaviour from OPENSSL_config(). If appname is NULL
7628 use "openssl_conf" if filename is NULL use default openssl config file.
7631 *) Add an argument to OPENSSL_config() to allow the use of an alternative
7632 config section name. Add a new flag to tolerate a missing config file
7633 and move code to CONF_modules_load_file().
7636 *) Support for crypto accelerator cards from Accelerated Encryption
7637 Processing, www.aep.ie. (Use engine 'aep')
7638 The support was copied from 0.9.6c [engine] and adapted/corrected
7639 to work with the new engine framework.
7640 [AEP Inc. and Richard Levitte]
7642 *) Support for SureWare crypto accelerator cards from Baltimore
7643 Technologies. (Use engine 'sureware')
7644 The support was copied from 0.9.6c [engine] and adapted
7645 to work with the new engine framework.
7648 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
7649 make the newer ENGINE framework commands for the CHIL engine work.
7650 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
7652 *) Make it possible to produce shared libraries on ReliantUNIX.
7653 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
7655 *) Add the configuration target debug-linux-ppro.
7656 Make 'openssl rsa' use the general key loading routines
7657 implemented in apps.c, and make those routines able to
7658 handle the key format FORMAT_NETSCAPE and the variant
7660 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7662 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7663 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7665 *) Add -keyform to rsautl, and document -engine.
7666 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
7668 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
7669 BIO_R_NO_SUCH_FILE error code rather than the generic
7670 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
7673 *) Add new functions
7675 ERR_peek_last_error_line
7676 ERR_peek_last_error_line_data.
7677 These are similar to
7680 ERR_peek_error_line_data,
7681 but report on the latest error recorded rather than the first one
7682 still in the error queue.
7683 [Ben Laurie, Bodo Moeller]
7685 *) default_algorithms option in ENGINE config module. This allows things
7687 default_algorithms = ALL
7688 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
7691 *) Preliminary ENGINE config module.
7694 *) New experimental application configuration code.
7697 *) Change the AES code to follow the same name structure as all other
7698 symmetric ciphers, and behave the same way. Move everything to
7699 the directory crypto/aes, thereby obsoleting crypto/rijndael.
7700 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7702 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
7703 [Ben Laurie and Theo de Raadt]
7705 *) Add option to output public keys in req command.
7706 [Massimiliano Pala madwolf@openca.org]
7708 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
7709 (up to about 10% better than before for P-192 and P-224).
7712 *) New functions/macros
7714 SSL_CTX_set_msg_callback(ctx, cb)
7715 SSL_CTX_set_msg_callback_arg(ctx, arg)
7716 SSL_set_msg_callback(ssl, cb)
7717 SSL_set_msg_callback_arg(ssl, arg)
7719 to request calling a callback function
7721 void cb(int write_p, int version, int content_type,
7722 const void *buf, size_t len, SSL *ssl, void *arg)
7724 whenever a protocol message has been completely received
7725 (write_p == 0) or sent (write_p == 1). Here 'version' is the
7726 protocol version according to which the SSL library interprets
7727 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
7728 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
7729 the content type as defined in the SSL 3.0/TLS 1.0 protocol
7730 specification (change_cipher_spec(20), alert(21), handshake(22)).
7731 'buf' and 'len' point to the actual message, 'ssl' to the
7732 SSL object, and 'arg' is the application-defined value set by
7733 SSL[_CTX]_set_msg_callback_arg().
7735 'openssl s_client' and 'openssl s_server' have new '-msg' options
7736 to enable a callback that displays all protocol messages.
7739 *) Change the shared library support so shared libraries are built as
7740 soon as the corresponding static library is finished, and thereby get
7741 openssl and the test programs linked against the shared library.
7742 This still only happens when the keyword "shard" has been given to
7743 the configuration scripts.
7745 NOTE: shared library support is still an experimental thing, and
7746 backward binary compatibility is still not guaranteed.
7747 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
7749 *) Add support for Subject Information Access extension.
7750 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7752 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
7753 additional bytes when new memory had to be allocated, not just
7754 when reusing an existing buffer.
7757 *) New command line and configuration option 'utf8' for the req command.
7758 This allows field values to be specified as UTF8 strings.
7761 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
7762 runs for the former and machine-readable output for the latter.
7765 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
7766 of the e-mail address in the DN (i.e., it will go into a certificate
7767 extension only). The new configuration file option 'email_in_dn = no'
7768 has the same effect.
7769 [Massimiliano Pala madwolf@openca.org]
7771 *) Change all functions with names starting with des_ to be starting
7772 with DES_ instead. Add wrappers that are compatible with libdes,
7773 but are named _ossl_old_des_*. Finally, add macros that map the
7774 des_* symbols to the corresponding _ossl_old_des_* if libdes
7775 compatibility is desired. If OpenSSL 0.9.6c compatibility is
7776 desired, the des_* symbols will be mapped to DES_*, with one
7779 Since we provide two compatibility mappings, the user needs to
7780 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
7781 compatibility is desired. The default (i.e., when that macro
7782 isn't defined) is OpenSSL 0.9.6c compatibility.
7784 There are also macros that enable and disable the support of old
7785 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
7786 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
7787 are defined, the default will apply: to support the old des routines.
7789 In either case, one must include openssl/des.h to get the correct
7790 definitions. Do not try to just include openssl/des_old.h, that
7793 NOTE: This is a major break of an old API into a new one. Software
7794 authors are encouraged to switch to the DES_ style functions. Some
7795 time in the future, des_old.h and the libdes compatibility functions
7796 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
7797 default), and then completely removed.
7800 *) Test for certificates which contain unsupported critical extensions.
7801 If such a certificate is found during a verify operation it is
7802 rejected by default: this behaviour can be overridden by either
7803 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
7804 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
7805 X509_supported_extension() has also been added which returns 1 if a
7806 particular extension is supported.
7809 *) Modify the behaviour of EVP cipher functions in similar way to digests
7810 to retain compatibility with existing code.
7813 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
7814 compatibility with existing code. In particular the 'ctx' parameter does
7815 not have to be to be initialized before the call to EVP_DigestInit() and
7816 it is tidied up after a call to EVP_DigestFinal(). New function
7817 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
7818 EVP_MD_CTX_copy() changed to not require the destination to be
7819 initialized valid and new function EVP_MD_CTX_copy_ex() added which
7820 requires the destination to be valid.
7822 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
7823 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
7826 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
7827 so that complete 'Handshake' protocol structures are kept in memory
7828 instead of overwriting 'msg_type' and 'length' with 'body' data.
7831 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
7832 [Massimo Santin via Richard Levitte]
7834 *) Major restructuring to the underlying ENGINE code. This includes
7835 reduction of linker bloat, separation of pure "ENGINE" manipulation
7836 (initialisation, etc) from functionality dealing with implementations
7837 of specific crypto interfaces. This change also introduces integrated
7838 support for symmetric ciphers and digest implementations - so ENGINEs
7839 can now accelerate these by providing EVP_CIPHER and EVP_MD
7840 implementations of their own. This is detailed in crypto/engine/README
7841 as it couldn't be adequately described here. However, there are a few
7842 API changes worth noting - some RSA, DSA, DH, and RAND functions that
7843 were changed in the original introduction of ENGINE code have now
7844 reverted back - the hooking from this code to ENGINE is now a good
7845 deal more passive and at run-time, operations deal directly with
7846 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
7847 dereferencing through an ENGINE pointer any more. Also, the ENGINE
7848 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
7849 they were not being used by the framework as there is no concept of a
7850 BIGNUM_METHOD and they could not be generalised to the new
7851 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
7852 ENGINE_cpy() has been removed as it cannot be consistently defined in
7856 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
7859 *) Change mkdef.pl to sort symbols that get the same entry number,
7860 and make sure the automatically generated functions ERR_load_*
7861 become part of libeay.num as well.
7864 *) New function SSL_renegotiate_pending(). This returns true once
7865 renegotiation has been requested (either SSL_renegotiate() call
7866 or HelloRequest/ClientHello received from the peer) and becomes
7867 false once a handshake has been completed.
7868 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
7869 sends a HelloRequest, but does not ensure that a handshake takes
7870 place. SSL_renegotiate_pending() is useful for checking if the
7871 client has followed the request.)
7874 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
7875 By default, clients may request session resumption even during
7876 renegotiation (if session ID contexts permit); with this option,
7877 session resumption is possible only in the first handshake.
7879 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
7880 more bits available for options that should not be part of
7881 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
7884 *) Add some demos for certificate and certificate request creation.
7887 *) Make maximum certificate chain size accepted from the peer application
7888 settable (SSL*_get/set_max_cert_list()), as proposed by
7889 "Douglas E. Engert" <deengert@anl.gov>.
7892 *) Add support for shared libraries for Unixware-7
7893 (Boyd Lynn Gerber <gerberb@zenez.com>).
7896 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
7897 be done prior to destruction. Use this to unload error strings from
7898 ENGINEs that load their own error strings. NB: This adds two new API
7899 functions to "get" and "set" this destroy handler in an ENGINE.
7902 *) Alter all existing ENGINE implementations (except "openssl" and
7903 "openbsd") to dynamically instantiate their own error strings. This
7904 makes them more flexible to be built both as statically-linked ENGINEs
7905 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
7906 Also, add stub code to each that makes building them as self-contained
7907 shared-libraries easier (see README.ENGINE).
7910 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
7911 implementations into applications that are completely implemented in
7912 self-contained shared-libraries. The "dynamic" ENGINE exposes control
7913 commands that can be used to configure what shared-library to load and
7914 to control aspects of the way it is handled. Also, made an update to
7915 the README.ENGINE file that brings its information up-to-date and
7916 provides some information and instructions on the "dynamic" ENGINE
7917 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
7920 *) Make it possible to unload ranges of ERR strings with a new
7921 "ERR_unload_strings" function.
7924 *) Add a copy() function to EVP_MD.
7927 *) Make EVP_MD routines take a context pointer instead of just the
7928 md_data void pointer.
7931 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
7932 that the digest can only process a single chunk of data
7933 (typically because it is provided by a piece of
7934 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
7935 is only going to provide a single chunk of data, and hence the
7936 framework needn't accumulate the data for oneshot drivers.
7939 *) As with "ERR", make it possible to replace the underlying "ex_data"
7940 functions. This change also alters the storage and management of global
7941 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
7942 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
7943 index counters. The API functions that use this state have been changed
7944 to take a "class_index" rather than pointers to the class's local STACK
7945 and counter, and there is now an API function to dynamically create new
7946 classes. This centralisation allows us to (a) plug a lot of the
7947 thread-safety problems that existed, and (b) makes it possible to clean
7948 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
7949 such data would previously have always leaked in application code and
7950 workarounds were in place to make the memory debugging turn a blind eye
7951 to it. Application code that doesn't use this new function will still
7952 leak as before, but their memory debugging output will announce it now
7953 rather than letting it slide.
7955 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
7956 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
7957 has a return value to indicate success or failure.
7960 *) Make it possible to replace the underlying "ERR" functions such that the
7961 global state (2 LHASH tables and 2 locks) is only used by the "default"
7962 implementation. This change also adds two functions to "get" and "set"
7963 the implementation prior to it being automatically set the first time
7964 any other ERR function takes place. Ie. an application can call "get",
7965 pass the return value to a module it has just loaded, and that module
7966 can call its own "set" function using that value. This means the
7967 module's "ERR" operations will use (and modify) the error state in the
7968 application and not in its own statically linked copy of OpenSSL code.
7971 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
7972 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
7973 the operation, and provides a more encapsulated way for external code
7974 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
7975 to use these functions rather than manually incrementing the counts.
7977 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
7980 *) Add EVP test program.
7983 *) Add symmetric cipher support to ENGINE. Expect the API to change!
7986 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
7987 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
7988 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
7989 These allow a CRL to be built without having to access X509_CRL fields
7990 directly. Modify 'ca' application to use new functions.
7993 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
7994 bug workarounds. Rollback attack detection is a security feature.
7995 The problem will only arise on OpenSSL servers when TLSv1 is not
7996 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
7997 Software authors not wanting to support TLSv1 will have special reasons
7998 for their choice and can explicitly enable this option.
7999 [Bodo Moeller, Lutz Jaenicke]
8001 *) Rationalise EVP so it can be extended: don't include a union of
8002 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
8003 (similar to those existing for EVP_CIPHER_CTX).
8008 EVP_MD_CTX_init(&md); /* new function call */
8009 EVP_DigestInit(&md, EVP_sha1());
8010 EVP_DigestUpdate(&md, in, len);
8011 EVP_DigestFinal(&md, out, NULL);
8012 EVP_MD_CTX_cleanup(&md); /* new function call */
8016 *) Make DES key schedule conform to the usual scheme, as well as
8017 correcting its structure. This means that calls to DES functions
8018 now have to pass a pointer to a des_key_schedule instead of a
8019 plain des_key_schedule (which was actually always a pointer
8022 des_key_schedule ks;
8024 des_set_key_checked(..., &ks);
8025 des_ncbc_encrypt(..., &ks, ...);
8027 (Note that a later change renames 'des_...' into 'DES_...'.)
8030 *) Initial reduction of linker bloat: the use of some functions, such as
8031 PEM causes large amounts of unused functions to be linked in due to
8032 poor organisation. For example pem_all.c contains every PEM function
8033 which has a knock on effect of linking in large amounts of (unused)
8034 ASN1 code. Grouping together similar functions and splitting unrelated
8035 functions prevents this.
8038 *) Cleanup of EVP macros.
8041 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
8042 correct _ecb suffix.
8045 *) Add initial OCSP responder support to ocsp application. The
8046 revocation information is handled using the text based index
8047 use by the ca application. The responder can either handle
8048 requests generated internally, supplied in files (for example
8049 via a CGI script) or using an internal minimal server.
8052 *) Add configuration choices to get zlib compression for TLS.
8055 *) Changes to Kerberos SSL for RFC 2712 compliance:
8056 1. Implemented real KerberosWrapper, instead of just using
8057 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
8058 2. Implemented optional authenticator field of KerberosWrapper.
8060 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
8061 and authenticator structs; see crypto/krb5/.
8063 Generalized Kerberos calls to support multiple Kerberos libraries.
8064 [Vern Staats <staatsvr@asc.hpc.mil>,
8065 Jeffrey Altman <jaltman@columbia.edu>
8066 via Richard Levitte]
8068 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
8069 already does with RSA. testdsa.h now has 'priv_key/pub_key'
8070 values for each of the key sizes rather than having just
8071 parameters (and 'speed' generating keys each time).
8074 *) Speed up EVP routines.
8077 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
8078 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
8079 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
8080 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
8082 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
8083 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
8084 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
8087 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
8089 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
8092 *) Added the OS2-EMX target.
8093 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
8095 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
8096 to support NCONF routines in extension code. New function CONF_set_nconf()
8097 to allow functions which take an NCONF to also handle the old LHASH
8098 structure: this means that the old CONF compatible routines can be
8099 retained (in particular wrt extensions) without having to duplicate the
8100 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
8103 *) Enhance the general user interface with mechanisms for inner control
8104 and with possibilities to have yes/no kind of prompts.
8107 *) Change all calls to low level digest routines in the library and
8108 applications to use EVP. Add missing calls to HMAC_cleanup() and
8109 don't assume HMAC_CTX can be copied using memcpy().
8110 [Verdon Walker <VWalker@novell.com>, Steve Henson]
8112 *) Add the possibility to control engines through control names but with
8113 arbitrary arguments instead of just a string.
8114 Change the key loaders to take a UI_METHOD instead of a callback
8115 function pointer. NOTE: this breaks binary compatibility with earlier
8116 versions of OpenSSL [engine].
8117 Adapt the nCipher code for these new conditions and add a card insertion
8121 *) Enhance the general user interface with mechanisms to better support
8122 dialog box interfaces, application-defined prompts, the possibility
8123 to use defaults (for example default passwords from somewhere else)
8124 and interrupts/cancellations.
8127 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
8128 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
8131 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
8132 tidy up some unnecessarily weird code in 'sk_new()').
8133 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
8135 *) Change the key loading routines for ENGINEs to use the same kind
8136 callback (pem_password_cb) as all other routines that need this
8140 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
8141 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
8142 than this minimum value is recommended.
8145 *) New random seeder for OpenVMS, using the system process statistics
8146 that are easily reachable.
8149 *) Windows apparently can't transparently handle global
8150 variables defined in DLLs. Initialisations such as:
8152 const ASN1_ITEM *it = &ASN1_INTEGER_it;
8154 won't compile. This is used by the any applications that need to
8155 declare their own ASN1 modules. This was fixed by adding the option
8156 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
8157 needed for static libraries under Win32.
8160 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
8161 setting of purpose and trust fields. New X509_STORE trust and
8162 purpose functions and tidy up setting in other SSL functions.
8165 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
8166 structure. These are inherited by X509_STORE_CTX when it is
8167 initialised. This allows various defaults to be set in the
8168 X509_STORE structure (such as flags for CRL checking and custom
8169 purpose or trust settings) for functions which only use X509_STORE_CTX
8170 internally such as S/MIME.
8172 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
8173 trust settings if they are not set in X509_STORE. This allows X509_STORE
8174 purposes and trust (in S/MIME for example) to override any set by default.
8176 Add command line options for CRL checking to smime, s_client and s_server
8180 *) Initial CRL based revocation checking. If the CRL checking flag(s)
8181 are set then the CRL is looked up in the X509_STORE structure and
8182 its validity and signature checked, then if the certificate is found
8183 in the CRL the verify fails with a revoked error.
8185 Various new CRL related callbacks added to X509_STORE_CTX structure.
8187 Command line options added to 'verify' application to support this.
8189 This needs some additional work, such as being able to handle multiple
8190 CRLs with different times, extension based lookup (rather than just
8191 by subject name) and ultimately more complete V2 CRL extension
8195 *) Add a general user interface API (crypto/ui/). This is designed
8196 to replace things like des_read_password and friends (backward
8197 compatibility functions using this new API are provided).
8198 The purpose is to remove prompting functions from the DES code
8199 section as well as provide for prompting through dialog boxes in
8200 a window system and the like.
8203 *) Add "ex_data" support to ENGINE so implementations can add state at a
8204 per-structure level rather than having to store it globally.
8207 *) Make it possible for ENGINE structures to be copied when retrieved by
8208 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
8209 This causes the "original" ENGINE structure to act like a template,
8210 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
8211 operational state can be localised to each ENGINE structure, despite the
8212 fact they all share the same "methods". New ENGINE structures returned in
8213 this case have no functional references and the return value is the single
8214 structural reference. This matches the single structural reference returned
8215 by ENGINE_by_id() normally, when it is incremented on the pre-existing
8219 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
8220 needs to match any other type at all we need to manually clear the
8224 *) Changes to the "openssl engine" utility to include;
8225 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
8226 about an ENGINE's available control commands.
8227 - executing control commands from command line arguments using the
8228 '-pre' and '-post' switches. '-post' is only used if '-t' is
8229 specified and the ENGINE is successfully initialised. The syntax for
8230 the individual commands are colon-separated, for example;
8231 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
8234 *) New dynamic control command support for ENGINEs. ENGINEs can now
8235 declare their own commands (numbers), names (strings), descriptions,
8236 and input types for run-time discovery by calling applications. A
8237 subset of these commands are implicitly classed as "executable"
8238 depending on their input type, and only these can be invoked through
8239 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
8240 can be based on user input, config files, etc). The distinction is
8241 that "executable" commands cannot return anything other than a boolean
8242 result and can only support numeric or string input, whereas some
8243 discoverable commands may only be for direct use through
8244 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
8245 pointers, or other custom uses. The "executable" commands are to
8246 support parameterisations of ENGINE behaviour that can be
8247 unambiguously defined by ENGINEs and used consistently across any
8248 OpenSSL-based application. Commands have been added to all the
8249 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
8250 control over shared-library paths without source code alterations.
8253 *) Changed all ENGINE implementations to dynamically allocate their
8254 ENGINEs rather than declaring them statically. Apart from this being
8255 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
8256 this also allows the implementations to compile without using the
8257 internal engine_int.h header.
8260 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
8261 'const' value. Any code that should be able to modify a RAND_METHOD
8262 should already have non-const pointers to it (ie. they should only
8263 modify their own ones).
8266 *) Made a variety of little tweaks to the ENGINE code.
8267 - "atalla" and "ubsec" string definitions were moved from header files
8268 to C code. "nuron" string definitions were placed in variables
8269 rather than hard-coded - allowing parameterisation of these values
8270 later on via ctrl() commands.
8271 - Removed unused "#if 0"'d code.
8272 - Fixed engine list iteration code so it uses ENGINE_free() to release
8273 structural references.
8274 - Constified the RAND_METHOD element of ENGINE structures.
8275 - Constified various get/set functions as appropriate and added
8276 missing functions (including a catch-all ENGINE_cpy that duplicates
8277 all ENGINE values onto a new ENGINE except reference counts/state).
8278 - Removed NULL parameter checks in get/set functions. Setting a method
8279 or function to NULL is a way of cancelling out a previously set
8280 value. Passing a NULL ENGINE parameter is just plain stupid anyway
8281 and doesn't justify the extra error symbols and code.
8282 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
8283 flags from engine_int.h to engine.h.
8284 - Changed prototypes for ENGINE handler functions (init(), finish(),
8285 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
8288 *) Implement binary inversion algorithm for BN_mod_inverse in addition
8289 to the algorithm using long division. The binary algorithm can be
8290 used only if the modulus is odd. On 32-bit systems, it is faster
8291 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
8292 roughly 5-15% for 256-bit moduli), so we use it only for moduli
8293 up to 450 bits. In 64-bit environments, the binary algorithm
8294 appears to be advantageous for much longer moduli; here we use it
8295 for moduli up to 2048 bits.
8298 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
8299 could not support the combine flag in choice fields.
8302 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
8303 extensions from a certificate request to the certificate.
8306 *) Allow multiple 'certopt' and 'nameopt' options to be separated
8307 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
8308 file: this allows the display of the certificate about to be
8309 signed to be customised, to allow certain fields to be included
8310 or excluded and extension details. The old system didn't display
8311 multicharacter strings properly, omitted fields not in the policy
8312 and couldn't display additional details such as extensions.
8315 *) Function EC_POINTs_mul for multiple scalar multiplication
8316 of an arbitrary number of elliptic curve points
8317 \sum scalars[i]*points[i],
8318 optionally including the generator defined for the EC_GROUP:
8319 scalar*generator + \sum scalars[i]*points[i].
8321 EC_POINT_mul is a simple wrapper function for the typical case
8322 that the point list has just one item (besides the optional
8326 *) First EC_METHODs for curves over GF(p):
8328 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
8329 operations and provides various method functions that can also
8330 operate with faster implementations of modular arithmetic.
8332 EC_GFp_mont_method() reuses most functions that are part of
8333 EC_GFp_simple_method, but uses Montgomery arithmetic.
8335 [Bodo Moeller; point addition and point doubling
8336 implementation directly derived from source code provided by
8337 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
8339 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
8340 crypto/ec/ec_lib.c):
8342 Curves are EC_GROUP objects (with an optional group generator)
8343 based on EC_METHODs that are built into the library.
8345 Points are EC_POINT objects based on EC_GROUP objects.
8347 Most of the framework would be able to handle curves over arbitrary
8348 finite fields, but as there are no obvious types for fields other
8349 than GF(p), some functions are limited to that for now.
8352 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
8353 that the file contains a complete HTTP response.
8356 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
8357 change the def and num file printf format specifier from "%-40sXXX"
8358 to "%-39s XXX". The latter will always guarantee a space after the
8359 field while the former will cause them to run together if the field
8360 is 40 of more characters long.
8363 *) Constify the cipher and digest 'method' functions and structures
8364 and modify related functions to take constant EVP_MD and EVP_CIPHER
8368 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
8369 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
8372 *) Modify EVP_Digest*() routines so they now return values. Although the
8373 internal software routines can never fail additional hardware versions
8377 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
8379 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
8380 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
8383 ERR_R_NESTED_ASN1_ERROR
8385 ERR_R_MISSING_ASN1_EOS
8386 were 4 .. 9, conflicting with
8387 ERR_LIB_RSA (= ERR_R_RSA_LIB)
8389 ERR_LIB_PEM (= ERR_R_PEM_LIB).
8390 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
8392 Add new error code 'ERR_R_INTERNAL_ERROR'.
8395 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
8399 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
8400 sets the subject name for a new request or supersedes the
8401 subject name in a given request. Formats that can be parsed are
8402 'CN=Some Name, OU=myOU, C=IT'
8404 'CN=Some Name/OU=myOU/C=IT'.
8406 Add options '-batch' and '-verbose' to 'openssl req'.
8407 [Massimiliano Pala <madwolf@hackmasters.net>]
8409 *) Introduce the possibility to access global variables through
8410 functions on platform were that's the best way to handle exporting
8411 global variables in shared libraries. To enable this functionality,
8412 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
8413 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
8414 is normally done by Configure or something similar).
8416 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
8417 in the source file (foo.c) like this:
8419 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
8420 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
8422 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
8423 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
8425 OPENSSL_DECLARE_GLOBAL(int,foo);
8426 #define foo OPENSSL_GLOBAL_REF(foo)
8427 OPENSSL_DECLARE_GLOBAL(double,bar);
8428 #define bar OPENSSL_GLOBAL_REF(bar)
8430 The #defines are very important, and therefore so is including the
8431 header file everywhere where the defined globals are used.
8433 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
8434 of ASN.1 items, but that structure is a bit different.
8436 The largest change is in util/mkdef.pl which has been enhanced with
8437 better and easier to understand logic to choose which symbols should
8438 go into the Windows .def files as well as a number of fixes and code
8439 cleanup (among others, algorithm keywords are now sorted
8440 lexicographically to avoid constant rewrites).
8443 *) In BN_div() keep a copy of the sign of 'num' before writing the
8444 result to 'rm' because if rm==num the value will be overwritten
8445 and produce the wrong result if 'num' is negative: this caused
8446 problems with BN_mod() and BN_nnmod().
8449 *) Function OCSP_request_verify(). This checks the signature on an
8450 OCSP request and verifies the signer certificate. The signer
8451 certificate is just checked for a generic purpose and OCSP request
8455 *) Add OCSP_check_validity() function to check the validity of OCSP
8456 responses. OCSP responses are prepared in real time and may only
8457 be a few seconds old. Simply checking that the current time lies
8458 between thisUpdate and nextUpdate max reject otherwise valid responses
8459 caused by either OCSP responder or client clock inaccuracy. Instead
8460 we allow thisUpdate and nextUpdate to fall within a certain period of
8461 the current time. The age of the response can also optionally be
8462 checked. Two new options -validity_period and -status_age added to
8466 *) If signature or public key algorithm is unrecognized print out its
8467 OID rather that just UNKNOWN.
8470 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
8471 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
8472 ID to be generated from the issuer certificate alone which can then be
8473 passed to OCSP_id_issuer_cmp().
8476 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
8477 ASN1 modules to export functions returning ASN1_ITEM pointers
8478 instead of the ASN1_ITEM structures themselves. This adds several
8479 new macros which allow the underlying ASN1 function/structure to
8480 be accessed transparently. As a result code should not use ASN1_ITEM
8481 references directly (such as &X509_it) but instead use the relevant
8482 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
8483 use of the new ASN1 code on platforms where exporting structures
8484 is problematical (for example in shared libraries) but exporting
8485 functions returning pointers to structures is not.
8488 *) Add support for overriding the generation of SSL/TLS session IDs.
8489 These callbacks can be registered either in an SSL_CTX or per SSL.
8490 The purpose of this is to allow applications to control, if they wish,
8491 the arbitrary values chosen for use as session IDs, particularly as it
8492 can be useful for session caching in multiple-server environments. A
8493 command-line switch for testing this (and any client code that wishes
8494 to use such a feature) has been added to "s_server".
8495 [Geoff Thorpe, Lutz Jaenicke]
8497 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
8498 of the form '#if defined(...) || defined(...) || ...' and
8499 '#if !defined(...) && !defined(...) && ...'. This also avoids
8500 the growing number of special cases it was previously handling.
8503 *) Make all configuration macros available for application by making
8504 sure they are available in opensslconf.h, by giving them names starting
8505 with "OPENSSL_" to avoid conflicts with other packages and by making
8506 sure e_os2.h will cover all platform-specific cases together with
8508 Additionally, it is now possible to define configuration/platform-
8509 specific names (called "system identities"). In the C code, these
8510 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
8511 macro with the name beginning with "OPENSSL_SYS_", which is determined
8512 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
8516 *) New option -set_serial to 'req' and 'x509' this allows the serial
8517 number to use to be specified on the command line. Previously self
8518 signed certificates were hard coded with serial number 0 and the
8519 CA options of 'x509' had to use a serial number in a file which was
8523 *) New options to 'ca' utility to support V2 CRL entry extensions.
8524 Currently CRL reason, invalidity date and hold instruction are
8525 supported. Add new CRL extensions to V3 code and some new objects.
8528 *) New function EVP_CIPHER_CTX_set_padding() this is used to
8529 disable standard block padding (aka PKCS#5 padding) in the EVP
8530 API, which was previously mandatory. This means that the data is
8531 not padded in any way and so the total length much be a multiple
8532 of the block size, otherwise an error occurs.
8535 *) Initial (incomplete) OCSP SSL support.
8538 *) New function OCSP_parse_url(). This splits up a URL into its host,
8539 port and path components: primarily to parse OCSP URLs. New -url
8540 option to ocsp utility.
8543 *) New nonce behavior. The return value of OCSP_check_nonce() now
8544 reflects the various checks performed. Applications can decide
8545 whether to tolerate certain situations such as an absent nonce
8546 in a response when one was present in a request: the ocsp application
8547 just prints out a warning. New function OCSP_add1_basic_nonce()
8548 this is to allow responders to include a nonce in a response even if
8549 the request is nonce-less.
8552 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
8553 skipped when using openssl x509 multiple times on a single input file,
8554 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
8557 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
8558 set string type: to handle setting ASN1_TIME structures. Fix ca
8559 utility to correctly initialize revocation date of CRLs.
8562 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
8563 the clients preferred ciphersuites and rather use its own preferences.
8564 Should help to work around M$ SGC (Server Gated Cryptography) bug in
8565 Internet Explorer by ensuring unchanged hash method during stepup.
8566 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
8569 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
8570 to aes and add a new 'exist' option to print out symbols that don't
8574 *) Additional options to ocsp utility to allow flags to be set and
8575 additional certificates supplied.
8578 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
8579 OCSP client a number of certificate to only verify the response
8583 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
8584 handle the new API. Currently only ECB, CBC modes supported. Add new
8587 Add TLS AES ciphersuites as described in RFC3268, "Advanced
8588 Encryption Standard (AES) Ciphersuites for Transport Layer
8589 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
8590 not enabled by default and were not part of the "ALL" ciphersuite
8591 alias because they were not yet official; they could be
8592 explicitly requested by specifying the "AESdraft" ciphersuite
8593 group alias. In the final release of OpenSSL 0.9.7, the group
8594 alias is called "AES" and is part of "ALL".)
8595 [Ben Laurie, Steve Henson, Bodo Moeller]
8597 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
8598 request to response.
8601 *) Functions for OCSP responders. OCSP_request_onereq_count(),
8602 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
8603 extract information from a certificate request. OCSP_response_create()
8604 creates a response and optionally adds a basic response structure.
8605 OCSP_basic_add1_status() adds a complete single response to a basic
8606 response and returns the OCSP_SINGLERESP structure just added (to allow
8607 extensions to be included for example). OCSP_basic_add1_cert() adds a
8608 certificate to a basic response and OCSP_basic_sign() signs a basic
8609 response with various flags. New helper functions ASN1_TIME_check()
8610 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
8611 (converts ASN1_TIME to GeneralizedTime).
8614 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
8615 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
8616 structure from a certificate. X509_pubkey_digest() digests the public_key
8617 contents: this is used in various key identifiers.
8620 *) Make sk_sort() tolerate a NULL argument.
8621 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
8623 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
8624 passed by the function are trusted implicitly. If any of them signed the
8625 response then it is assumed to be valid and is not verified.
8628 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
8629 to data. This was previously part of the PKCS7 ASN1 code. This
8630 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
8631 [Steve Henson, reported by Kenneth R. Robinette
8632 <support@securenetterm.com>]
8634 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
8635 routines: without these tracing memory leaks is very painful.
8636 Fix leaks in PKCS12 and PKCS7 routines.
8639 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
8640 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
8641 effectively meant GeneralizedTime would never be used. Now it
8642 is initialised to -1 but X509_time_adj() now has to check the value
8643 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
8644 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
8645 [Steve Henson, reported by Kenneth R. Robinette
8646 <support@securenetterm.com>]
8648 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
8649 result in a zero length in the ASN1_INTEGER structure which was
8650 not consistent with the structure when d2i_ASN1_INTEGER() was used
8651 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
8652 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
8653 where it did not print out a minus for negative ASN1_INTEGER.
8656 *) Add summary printout to ocsp utility. The various functions which
8657 convert status values to strings have been renamed to:
8658 OCSP_response_status_str(), OCSP_cert_status_str() and
8659 OCSP_crl_reason_str() and are no longer static. New options
8660 to verify nonce values and to disable verification. OCSP response
8661 printout format cleaned up.
8664 *) Add additional OCSP certificate checks. These are those specified
8665 in RFC2560. This consists of two separate checks: the CA of the
8666 certificate being checked must either be the OCSP signer certificate
8667 or the issuer of the OCSP signer certificate. In the latter case the
8668 OCSP signer certificate must contain the OCSP signing extended key
8669 usage. This check is performed by attempting to match the OCSP
8670 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
8671 in the OCSP_CERTID structures of the response.
8674 *) Initial OCSP certificate verification added to OCSP_basic_verify()
8675 and related routines. This uses the standard OpenSSL certificate
8676 verify routines to perform initial checks (just CA validity) and
8677 to obtain the certificate chain. Then additional checks will be
8678 performed on the chain. Currently the root CA is checked to see
8679 if it is explicitly trusted for OCSP signing. This is used to set
8680 a root CA as a global signing root: that is any certificate that
8681 chains to that CA is an acceptable OCSP signing certificate.
8684 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
8685 extensions from a separate configuration file.
8686 As when reading extensions from the main configuration file,
8687 the '-extensions ...' option may be used for specifying the
8689 [Massimiliano Pala <madwolf@comune.modena.it>]
8691 *) New OCSP utility. Allows OCSP requests to be generated or
8692 read. The request can be sent to a responder and the output
8693 parsed, outputed or printed in text form. Not complete yet:
8694 still needs to check the OCSP response validity.
8697 *) New subcommands for 'openssl ca':
8698 'openssl ca -status <serial>' prints the status of the cert with
8699 the given serial number (according to the index file).
8700 'openssl ca -updatedb' updates the expiry status of certificates
8702 [Massimiliano Pala <madwolf@comune.modena.it>]
8704 *) New '-newreq-nodes' command option to CA.pl. This is like
8705 '-newreq', but calls 'openssl req' with the '-nodes' option
8706 so that the resulting key is not encrypted.
8707 [Damien Miller <djm@mindrot.org>]
8709 *) New configuration for the GNU Hurd.
8710 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
8712 *) Initial code to implement OCSP basic response verify. This
8713 is currently incomplete. Currently just finds the signer's
8714 certificate and verifies the signature on the response.
8717 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
8718 value of OPENSSLDIR. This is available via the new '-d' option
8719 to 'openssl version', and is also included in 'openssl version -a'.
8722 *) Allowing defining memory allocation callbacks that will be given
8723 file name and line number information in additional arguments
8724 (a const char* and an int). The basic functionality remains, as
8725 well as the original possibility to just replace malloc(),
8726 realloc() and free() by functions that do not know about these
8727 additional arguments. To register and find out the current
8728 settings for extended allocation functions, the following
8729 functions are provided:
8731 CRYPTO_set_mem_ex_functions
8732 CRYPTO_set_locked_mem_ex_functions
8733 CRYPTO_get_mem_ex_functions
8734 CRYPTO_get_locked_mem_ex_functions
8736 These work the same way as CRYPTO_set_mem_functions and friends.
8737 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
8738 extended allocation function is enabled.
8739 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
8740 a conventional allocation function is enabled.
8741 [Richard Levitte, Bodo Moeller]
8743 *) Finish off removing the remaining LHASH function pointer casts.
8744 There should no longer be any prototype-casting required when using
8745 the LHASH abstraction, and any casts that remain are "bugs". See
8746 the callback types and macros at the head of lhash.h for details
8747 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
8750 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
8751 If /dev/[u]random devices are not available or do not return enough
8752 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
8754 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
8755 /etc/entropy will be queried once each in this sequence, querying stops
8756 when enough entropy was collected without querying more sockets.
8759 *) Change the Unix RAND_poll() variant to be able to poll several
8760 random devices, as specified by DEVRANDOM, until a sufficient amount
8761 of data has been collected. We spend at most 10 ms on each file
8762 (select timeout) and read in non-blocking mode. DEVRANDOM now
8763 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
8764 (previously it was just the string "/dev/urandom"), so on typical
8765 platforms the 10 ms delay will never occur.
8766 Also separate out the Unix variant to its own file, rand_unix.c.
8767 For VMS, there's a currently-empty rand_vms.c.
8770 *) Move OCSP client related routines to ocsp_cl.c. These
8771 provide utility functions which an application needing
8772 to issue a request to an OCSP responder and analyse the
8773 response will typically need: as opposed to those which an
8774 OCSP responder itself would need which will be added later.
8776 OCSP_request_sign() signs an OCSP request with an API similar
8777 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
8778 response. OCSP_response_get1_basic() extracts basic response
8779 from response. OCSP_resp_find_status(): finds and extracts status
8780 information from an OCSP_CERTID structure (which will be created
8781 when the request structure is built). These are built from lower
8782 level functions which work on OCSP_SINGLERESP structures but
8783 won't normally be used unless the application wishes to examine
8784 extensions in the OCSP response for example.
8786 Replace nonce routines with a pair of functions.
8787 OCSP_request_add1_nonce() adds a nonce value and optionally
8788 generates a random value. OCSP_check_nonce() checks the
8789 validity of the nonce in an OCSP response.
8792 *) Change function OCSP_request_add() to OCSP_request_add0_id().
8793 This doesn't copy the supplied OCSP_CERTID and avoids the
8794 need to free up the newly created id. Change return type
8795 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
8796 This can then be used to add extensions to the request.
8797 Deleted OCSP_request_new(), since most of its functionality
8798 is now in OCSP_REQUEST_new() (and the case insensitive name
8799 clash) apart from the ability to set the request name which
8800 will be added elsewhere.
8803 *) Update OCSP API. Remove obsolete extensions argument from
8804 various functions. Extensions are now handled using the new
8805 OCSP extension code. New simple OCSP HTTP function which
8806 can be used to send requests and parse the response.
8809 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
8810 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
8811 uses the special reorder version of SET OF to sort the attributes
8812 and reorder them to match the encoded order. This resolves a long
8813 standing problem: a verify on a PKCS7 structure just after signing
8814 it used to fail because the attribute order did not match the
8815 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
8816 it uses the received order. This is necessary to tolerate some broken
8817 software that does not order SET OF. This is handled by encoding
8818 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
8819 to produce the required SET OF.
8822 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
8823 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
8824 files to get correct declarations of the ASN.1 item variables.
8827 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
8828 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
8829 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
8830 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
8831 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
8832 ASN1_ITEM and no wrapper functions.
8835 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
8836 replace the old function pointer based I/O routines. Change most of
8837 the *_d2i_bio() and *_d2i_fp() functions to use these.
8840 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
8841 lines, recognize more "algorithms" that can be deselected, and make
8842 it complain about algorithm deselection that isn't recognised.
8845 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
8846 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
8847 to use new functions. Add NO_ASN1_OLD which can be set to remove
8848 some old style ASN1 functions: this can be used to determine if old
8849 code will still work when these eventually go away.
8852 *) New extension functions for OCSP structures, these follow the
8853 same conventions as certificates and CRLs.
8856 *) New function X509V3_add1_i2d(). This automatically encodes and
8857 adds an extension. Its behaviour can be customised with various
8858 flags to append, replace or delete. Various wrappers added for
8859 certificates and CRLs.
8862 *) Fix to avoid calling the underlying ASN1 print routine when
8863 an extension cannot be parsed. Correct a typo in the
8864 OCSP_SERVICELOC extension. Tidy up print OCSP format.
8867 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
8868 entries for variables.
8871 *) Add functionality to apps/openssl.c for detecting locking
8872 problems: As the program is single-threaded, all we have
8873 to do is register a locking callback using an array for
8874 storing which locks are currently held by the program.
8877 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
8878 SSL_get_ex_data_X509_STORE_idx(), which is used in
8879 ssl_verify_cert_chain() and thus can be called at any time
8880 during TLS/SSL handshakes so that thread-safety is essential.
8881 Unfortunately, the ex_data design is not at all suited
8882 for multi-threaded use, so it probably should be abolished.
8885 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
8886 [Broadcom, tweaked and integrated by Geoff Thorpe]
8888 *) Move common extension printing code to new function
8889 X509V3_print_extensions(). Reorganise OCSP print routines and
8890 implement some needed OCSP ASN1 functions. Add OCSP extensions.
8893 *) New function X509_signature_print() to remove duplication in some
8897 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
8898 set (this was treated exactly the same as SET OF previously). This
8899 is used to reorder the STACK representing the structure to match the
8900 encoding. This will be used to get round a problem where a PKCS7
8901 structure which was signed could not be verified because the STACK
8902 order did not reflect the encoded order.
8905 *) Reimplement the OCSP ASN1 module using the new code.
8908 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
8909 for its ASN1 operations. The old style function pointers still exist
8910 for now but they will eventually go away.
8913 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
8914 completely replaces the old ASN1 functionality with a table driven
8915 encoder and decoder which interprets an ASN1_ITEM structure describing
8916 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
8917 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
8918 has also been converted to the new form.
8921 *) Change BN_mod_exp_recp so that negative moduli are tolerated
8922 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
8923 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
8924 for negative moduli.
8927 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
8928 of not touching the result's sign bit.
8931 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
8935 *) Changed the LHASH code to use prototypes for callbacks, and created
8936 macros to declare and implement thin (optionally static) functions
8937 that provide type-safety and avoid function pointer casting for the
8938 type-specific callbacks.
8941 *) Added Kerberos Cipher Suites to be used with TLS, as written in
8943 [Veers Staats <staatsvr@asc.hpc.mil>,
8944 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
8946 *) Reformat the FAQ so the different questions and answers can be divided
8947 in sections depending on the subject.
8950 *) Have the zlib compression code load ZLIB.DLL dynamically under
8954 *) New function BN_mod_sqrt for computing square roots modulo a prime
8955 (using the probabilistic Tonelli-Shanks algorithm unless
8956 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
8957 be handled deterministically).
8958 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
8960 *) Make BN_mod_inverse faster by explicitly handling small quotients
8961 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
8962 512 bits], about 30% for larger ones [1024 or 2048 bits].)
8965 *) New function BN_kronecker.
8968 *) Fix BN_gcd so that it works on negative inputs; the result is
8969 positive unless both parameters are zero.
8970 Previously something reasonably close to an infinite loop was
8971 possible because numbers could be growing instead of shrinking
8972 in the implementation of Euclid's algorithm.
8975 *) Fix BN_is_word() and BN_is_one() macros to take into account the
8976 sign of the number in question.
8978 Fix BN_is_word(a,w) to work correctly for w == 0.
8980 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
8981 because its test if the absolute value of 'a' equals 'w'.
8982 Note that BN_abs_is_word does *not* handle w == 0 reliably;
8983 it exists mostly for use in the implementations of BN_is_zero(),
8984 BN_is_one(), and BN_is_word().
8987 *) New function BN_swap.
8990 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
8991 the exponentiation functions are more likely to produce reasonable
8992 results on negative inputs.
8995 *) Change BN_mod_mul so that the result is always non-negative.
8996 Previously, it could be negative if one of the factors was negative;
8997 I don't think anyone really wanted that behaviour.
9000 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
9001 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
9002 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
9003 and add new functions:
9012 BN_mod_lshift1_quick
9016 These functions always generate non-negative results.
9018 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
9019 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
9021 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
9022 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
9023 be reduced modulo m.
9024 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
9027 The following entry accidentally appeared in the CHANGES file
9028 distributed with OpenSSL 0.9.7. The modifications described in
9029 it do *not* apply to OpenSSL 0.9.7.
9031 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
9032 was actually never needed) and in BN_mul(). The removal in BN_mul()
9033 required a small change in bn_mul_part_recursive() and the addition
9034 of the functions bn_cmp_part_words(), bn_sub_part_words() and
9035 bn_add_part_words(), which do the same thing as bn_cmp_words(),
9036 bn_sub_words() and bn_add_words() except they take arrays with
9041 *) In 'openssl passwd', verify passwords read from the terminal
9042 unless the '-salt' option is used (which usually means that
9043 verification would just waste user's time since the resulting
9044 hash is going to be compared with some given password hash)
9045 or the new '-noverify' option is used.
9047 This is an incompatible change, but it does not affect
9048 non-interactive use of 'openssl passwd' (passwords on the command
9049 line, '-stdin' option, '-in ...' option) and thus should not
9053 *) Remove all references to RSAref, since there's no more need for it.
9056 *) Make DSO load along a path given through an environment variable
9057 (SHLIB_PATH) with shl_load().
9060 *) Constify the ENGINE code as a result of BIGNUM constification.
9061 Also constify the RSA code and most things related to it. In a
9062 few places, most notable in the depth of the ASN.1 code, ugly
9063 casts back to non-const were required (to be solved at a later
9067 *) Make it so the openssl application has all engines loaded by default.
9070 *) Constify the BIGNUM routines a little more.
9073 *) Add the following functions:
9075 ENGINE_load_cswift()
9077 ENGINE_load_atalla()
9079 ENGINE_load_builtin_engines()
9081 That way, an application can itself choose if external engines that
9082 are built-in in OpenSSL shall ever be used or not. The benefit is
9083 that applications won't have to be linked with libdl or other dso
9084 libraries unless it's really needed.
9086 Changed 'openssl engine' to load all engines on demand.
9087 Changed the engine header files to avoid the duplication of some
9088 declarations (they differed!).
9091 *) 'openssl engine' can now list capabilities.
9094 *) Better error reporting in 'openssl engine'.
9097 *) Never call load_dh_param(NULL) in s_server.
9100 *) Add engine application. It can currently list engines by name and
9101 identity, and test if they are actually available.
9104 *) Improve RPM specification file by forcing symbolic linking and making
9105 sure the installed documentation is also owned by root.root.
9106 [Damien Miller <djm@mindrot.org>]
9108 *) Give the OpenSSL applications more possibilities to make use of
9109 keys (public as well as private) handled by engines.
9112 *) Add OCSP code that comes from CertCo.
9115 *) Add VMS support for the Rijndael code.
9118 *) Added untested support for Nuron crypto accelerator.
9121 *) Add support for external cryptographic devices. This code was
9122 previously distributed separately as the "engine" branch.
9123 [Geoff Thorpe, Richard Levitte]
9125 *) Rework the filename-translation in the DSO code. It is now possible to
9126 have far greater control over how a "name" is turned into a filename
9127 depending on the operating environment and any oddities about the
9128 different shared library filenames on each system.
9131 *) Support threads on FreeBSD-elf in Configure.
9134 *) Fix for SHA1 assembly problem with MASM: it produces
9135 warnings about corrupt line number information when assembling
9136 with debugging information. This is caused by the overlapping
9138 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
9141 NCONF_get_number() has no error checking at all. As a replacement,
9142 NCONF_get_number_e() is defined (_e for "error checking") and is
9143 promoted strongly. The old NCONF_get_number is kept around for
9144 binary backward compatibility.
9145 Make it possible for methods to load from something other than a BIO,
9146 by providing a function pointer that is given a name instead of a BIO.
9147 For example, this could be used to load configuration data from an
9151 *) Fix for non blocking accept BIOs. Added new I/O special reason
9152 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
9153 with non blocking I/O was not possible because no retry code was
9154 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
9158 *) Added the beginnings of Rijndael support.
9161 *) Fix for bug in DirectoryString mask setting. Add support for
9162 X509_NAME_print_ex() in 'req' and X509_print_ex() function
9163 to allow certificate printing to more controllable, additional
9164 'certopt' option to 'x509' to allow new printing options to be
9168 *) Clean old EAY MD5 hack from e_os.h.
9171 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
9173 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
9174 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
9175 [Joe Orton, Steve Henson]
9177 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
9179 *) Fix additional bug revealed by the NISCC test suite:
9181 Stop bug triggering large recursion when presented with
9182 certain ASN.1 tags (CVE-2003-0851)
9185 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
9187 *) Fix various bugs revealed by running the NISCC test suite:
9189 Stop out of bounds reads in the ASN1 code when presented with
9190 invalid tags (CVE-2003-0543 and CVE-2003-0544).
9192 If verify callback ignores invalid public key errors don't try to check
9193 certificate signature with the NULL public key.
9197 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
9198 if the server requested one: as stated in TLS 1.0 and SSL 3.0
9202 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
9203 extra data after the compression methods not only for TLS 1.0
9204 but also for SSL 3.0 (as required by the specification).
9205 [Bodo Moeller; problem pointed out by Matthias Loepfe]
9207 *) Change X509_certificate_type() to mark the key as exported/exportable
9208 when it's 512 *bits* long, not 512 bytes.
9211 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
9213 *) Countermeasure against the Klima-Pokorny-Rosa extension of
9214 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
9215 a protocol version number mismatch like a decryption error
9216 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
9219 *) Turn on RSA blinding by default in the default implementation
9220 to avoid a timing attack. Applications that don't want it can call
9221 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
9222 They would be ill-advised to do so in most cases.
9223 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
9225 *) Change RSA blinding code so that it works when the PRNG is not
9226 seeded (in this case, the secret RSA exponent is abused as
9227 an unpredictable seed -- if it is not unpredictable, there
9228 is no point in blinding anyway). Make RSA blinding thread-safe
9229 by remembering the creator's thread ID in rsa->blinding and
9230 having all other threads use local one-time blinding factors
9231 (this requires more computation than sharing rsa->blinding, but
9232 avoids excessive locking; and if an RSA object is not shared
9233 between threads, blinding will still be very fast).
9236 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
9238 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
9239 via timing by performing a MAC computation even if incorrect
9240 block cipher padding has been found. This is a countermeasure
9241 against active attacks where the attacker has to distinguish
9242 between bad padding and a MAC verification error. (CVE-2003-0078)
9244 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
9245 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
9246 Martin Vuagnoux (EPFL, Ilion)]
9248 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
9250 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
9251 memory from its contents. This is done with a counter that will
9252 place alternating values in each byte. This can be used to solve
9253 two issues: 1) the removal of calls to memset() by highly optimizing
9254 compilers, and 2) cleansing with other values than 0, since those can
9255 be read through on certain media, for example a swap space on disk.
9258 *) Bugfix: client side session caching did not work with external caching,
9259 because the session->cipher setting was not restored when reloading
9260 from the external cache. This problem was masked, when
9261 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
9262 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
9265 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
9266 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
9267 [Zeev Lieber <zeev-l@yahoo.com>]
9269 *) Undo an undocumented change introduced in 0.9.6e which caused
9270 repeated calls to OpenSSL_add_all_ciphers() and
9271 OpenSSL_add_all_digests() to be ignored, even after calling
9275 *) Change the default configuration reader to deal with last line not
9276 being properly terminated.
9279 *) Change X509_NAME_cmp() so it applies the special rules on handling
9280 DN values that are of type PrintableString, as well as RDNs of type
9281 emailAddress where the value has the type ia5String.
9282 [stefank@valicert.com via Richard Levitte]
9284 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
9285 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
9286 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
9287 the bitwise-OR of the two for use by the majority of applications
9288 wanting this behaviour, and update the docs. The documented
9289 behaviour and actual behaviour were inconsistent and had been
9290 changing anyway, so this is more a bug-fix than a behavioural
9292 [Geoff Thorpe, diagnosed by Nadav Har'El]
9294 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
9295 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
9298 *) Fix initialization code race conditions in
9299 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
9300 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
9301 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
9302 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
9303 ssl2_get_cipher_by_char(),
9304 ssl3_get_cipher_by_char().
9305 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
9307 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
9308 the cached sessions are flushed, as the remove_cb() might use ex_data
9309 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
9310 (see [openssl.org #212]).
9311 [Geoff Thorpe, Lutz Jaenicke]
9313 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
9314 length, instead of the encoding length to d2i_ASN1_OBJECT.
9317 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
9319 *) [In 0.9.6g-engine release:]
9320 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
9321 [Lynn Gazis <lgazis@rainbow.com>]
9323 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
9325 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
9326 and get fix the header length calculation.
9327 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
9328 Alon Kantor <alonk@checkpoint.com> (and others),
9331 *) Use proper error handling instead of 'assertions' in buffer
9332 overflow checks added in 0.9.6e. This prevents DoS (the
9333 assertions could call abort()).
9334 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
9336 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
9338 *) Add various sanity checks to asn1_get_length() to reject
9339 the ASN1 length bytes if they exceed sizeof(long), will appear
9340 negative or the content length exceeds the length of the
9342 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9344 *) Fix cipher selection routines: ciphers without encryption had no flags
9345 for the cipher strength set and where therefore not handled correctly
9346 by the selection routines (PR #130).
9349 *) Fix EVP_dsa_sha macro.
9353 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
9354 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
9355 that was added in OpenSSL 0.9.6d.
9357 As the countermeasure turned out to be incompatible with some
9358 broken SSL implementations, the new option is part of SSL_OP_ALL.
9359 SSL_OP_ALL is usually employed when compatibility with weird SSL
9360 implementations is desired (e.g. '-bugs' option to 's_client' and
9361 's_server'), so the new option is automatically set in many
9365 *) Changes in security patch:
9367 Changes marked "(CHATS)" were sponsored by the Defense Advanced
9368 Research Projects Agency (DARPA) and Air Force Research Laboratory,
9369 Air Force Materiel Command, USAF, under agreement number
9372 *) Add various sanity checks to asn1_get_length() to reject
9373 the ASN1 length bytes if they exceed sizeof(long), will appear
9374 negative or the content length exceeds the length of the
9375 supplied buffer. (CVE-2002-0659)
9376 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9378 *) Assertions for various potential buffer overflows, not known to
9380 [Ben Laurie (CHATS)]
9382 *) Various temporary buffers to hold ASCII versions of integers were
9383 too small for 64 bit platforms. (CVE-2002-0655)
9384 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
9386 *) Remote buffer overflow in SSL3 protocol - an attacker could
9387 supply an oversized session ID to a client. (CVE-2002-0656)
9388 [Ben Laurie (CHATS)]
9390 *) Remote buffer overflow in SSL2 protocol - an attacker could
9391 supply an oversized client master key. (CVE-2002-0656)
9392 [Ben Laurie (CHATS)]
9394 Changes between 0.9.6c and 0.9.6d [9 May 2002]
9396 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
9397 encoded as NULL) with id-dsa-with-sha1.
9398 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
9400 *) Check various X509_...() return values in apps/req.c.
9401 [Nils Larsch <nla@trustcenter.de>]
9403 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
9404 an end-of-file condition would erroneously be flagged, when the CRLF
9405 was just at the end of a processed block. The bug was discovered when
9406 processing data through a buffering memory BIO handing the data to a
9407 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
9408 <ptsekov@syntrex.com> and Nedelcho Stanev.
9411 *) Implement a countermeasure against a vulnerability recently found
9412 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
9413 before application data chunks to avoid the use of known IVs
9414 with data potentially chosen by the attacker.
9417 *) Fix length checks in ssl3_get_client_hello().
9420 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
9421 to prevent ssl3_read_internal() from incorrectly assuming that
9422 ssl3_read_bytes() found application data while handshake
9423 processing was enabled when in fact s->s3->in_read_app_data was
9424 merely automatically cleared during the initial handshake.
9425 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
9427 *) Fix object definitions for Private and Enterprise: they were not
9428 recognized in their shortname (=lowercase) representation. Extend
9429 obj_dat.pl to issue an error when using undefined keywords instead
9430 of silently ignoring the problem (Svenning Sorensen
9431 <sss@sss.dnsalias.net>).
9434 *) Fix DH_generate_parameters() so that it works for 'non-standard'
9435 generators, i.e. generators other than 2 and 5. (Previously, the
9436 code did not properly initialise the 'add' and 'rem' values to
9437 BN_generate_prime().)
9439 In the new general case, we do not insist that 'generator' is
9440 actually a primitive root: This requirement is rather pointless;
9441 a generator of the order-q subgroup is just as good, if not
9445 *) Map new X509 verification errors to alerts. Discovered and submitted by
9446 Tom Wu <tom@arcot.com>.
9449 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
9450 returning non-zero before the data has been completely received
9451 when using non-blocking I/O.
9452 [Bodo Moeller; problem pointed out by John Hughes]
9454 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
9455 [Ben Laurie, Lutz Jaenicke]
9457 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
9458 Yoram Zahavi <YoramZ@gilian.com>).
9461 *) Add information about CygWin 1.3 and on, and preserve proper
9462 configuration for the versions before that.
9463 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
9465 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
9466 check whether we deal with a copy of a session and do not delete from
9467 the cache in this case. Problem reported by "Izhar Shoshani Levi"
9468 <izhar@checkpoint.com>.
9471 *) Do not store session data into the internal session cache, if it
9472 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
9473 flag is set). Proposed by Aslam <aslam@funk.com>.
9476 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
9480 *) [In 0.9.6d-engine release:]
9481 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
9482 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
9484 *) Add the configuration target linux-s390x.
9485 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
9487 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
9488 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
9489 variable as an indication that a ClientHello message has been
9490 received. As the flag value will be lost between multiple
9491 invocations of ssl3_accept when using non-blocking I/O, the
9492 function may not be aware that a handshake has actually taken
9493 place, thus preventing a new session from being added to the
9496 To avoid this problem, we now set s->new_session to 2 instead of
9497 using a local variable.
9498 [Lutz Jaenicke, Bodo Moeller]
9500 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
9501 if the SSL_R_LENGTH_MISMATCH error is detected.
9502 [Geoff Thorpe, Bodo Moeller]
9504 *) New 'shared_ldflag' column in Configure platform table.
9507 *) Fix EVP_CIPHER_mode macro.
9508 ["Dan S. Camper" <dan@bti.net>]
9510 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
9511 type, we must throw them away by setting rr->length to 0.
9512 [D P Chang <dpc@qualys.com>]
9514 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
9516 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
9517 <Dominikus.Scherkl@biodata.com>. (The previous implementation
9518 worked incorrectly for those cases where range = 10..._2 and
9519 3*range is two bits longer than range.)
9522 *) Only add signing time to PKCS7 structures if it is not already
9526 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
9527 OBJ_ld_ce should be OBJ_id_ce.
9528 Also some ip-pda OIDs in crypto/objects/objects.txt were
9529 incorrect (cf. RFC 3039).
9530 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
9532 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
9533 returns early because it has nothing to do.
9534 [Andy Schneider <andy.schneider@bjss.co.uk>]
9536 *) [In 0.9.6c-engine release:]
9537 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
9538 [Andy Schneider <andy.schneider@bjss.co.uk>]
9540 *) [In 0.9.6c-engine release:]
9541 Add support for Cryptographic Appliance's keyserver technology.
9542 (Use engine 'keyclient')
9543 [Cryptographic Appliances and Geoff Thorpe]
9545 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
9546 is called via tools/c89.sh because arguments have to be
9547 rearranged (all '-L' options must appear before the first object
9549 [Richard Shapiro <rshapiro@abinitio.com>]
9551 *) [In 0.9.6c-engine release:]
9552 Add support for Broadcom crypto accelerator cards, backported
9554 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
9556 *) [In 0.9.6c-engine release:]
9557 Add support for SureWare crypto accelerator cards from
9558 Baltimore Technologies. (Use engine 'sureware')
9559 [Baltimore Technologies and Mark Cox]
9561 *) [In 0.9.6c-engine release:]
9562 Add support for crypto accelerator cards from Accelerated
9563 Encryption Processing, www.aep.ie. (Use engine 'aep')
9564 [AEP Inc. and Mark Cox]
9566 *) Add a configuration entry for gcc on UnixWare.
9567 [Gary Benson <gbenson@redhat.com>]
9569 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
9570 messages are stored in a single piece (fixed-length part and
9571 variable-length part combined) and fix various bugs found on the way.
9574 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
9575 instead. BIO_gethostbyname() does not know what timeouts are
9576 appropriate, so entries would stay in cache even when they have
9578 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
9580 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
9581 faced with a pathologically small ClientHello fragment that does
9582 not contain client_version: Instead of aborting with an error,
9583 simply choose the highest available protocol version (i.e.,
9584 TLS 1.0 unless it is disabled). In practice, ClientHello
9585 messages are never sent like this, but this change gives us
9586 strictly correct behaviour at least for TLS.
9589 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
9590 never resets s->method to s->ctx->method when called from within
9591 one of the SSL handshake functions.
9592 [Bodo Moeller; problem pointed out by Niko Baric]
9594 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
9595 (sent using the client's version number) if client_version is
9596 smaller than the protocol version in use. Also change
9597 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
9598 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
9599 the client will at least see that alert.
9602 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
9606 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
9607 client receives HelloRequest while in a handshake.
9608 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
9610 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
9611 should end in 'break', not 'goto end' which circumvents various
9612 cleanups done in state SSL_ST_OK. But session related stuff
9613 must be disabled for SSL_ST_OK in the case that we just sent a
9616 Also avoid some overhead by not calling ssl_init_wbio_buffer()
9617 before just sending a HelloRequest.
9618 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
9620 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
9621 reveal whether illegal block cipher padding was found or a MAC
9622 verification error occurred. (Neither SSLerr() codes nor alerts
9623 are directly visible to potential attackers, but the information
9624 may leak via logfiles.)
9626 Similar changes are not required for the SSL 2.0 implementation
9627 because the number of padding bytes is sent in clear for SSL 2.0,
9628 and the extra bytes are just ignored. However ssl/s2_pkt.c
9629 failed to verify that the purported number of padding bytes is in
9633 *) Add OpenUNIX-8 support including shared libraries
9634 (Boyd Lynn Gerber <gerberb@zenez.com>).
9637 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
9638 'wristwatch attack' using huge encoding parameters (cf.
9639 James H. Manger's CRYPTO 2001 paper). Note that the
9640 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
9641 encoding parameters and hence was not vulnerable.
9644 *) BN_sqr() bug fix.
9645 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
9647 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
9648 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
9649 followed by modular reduction.
9650 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
9652 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
9653 equivalent based on BN_pseudo_rand() instead of BN_rand().
9656 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
9657 This function was broken, as the check for a new client hello message
9658 to handle SGC did not allow these large messages.
9659 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
9662 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
9665 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
9666 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
9669 *) Rework the configuration and shared library support for Tru64 Unix.
9670 The configuration part makes use of modern compiler features and
9671 still retains old compiler behavior for those that run older versions
9672 of the OS. The shared library support part includes a variant that
9673 uses the RPATH feature, and is available through the special
9674 configuration target "alpha-cc-rpath", which will never be selected
9676 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
9678 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
9679 with the same message size as in ssl3_get_certificate_request().
9680 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
9681 messages might inadvertently be reject as too long.
9682 [Petr Lampa <lampa@fee.vutbr.cz>]
9684 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
9687 *) Modified SSL library such that the verify_callback that has been set
9688 specificly for an SSL object with SSL_set_verify() is actually being
9689 used. Before the change, a verify_callback set with this function was
9690 ignored and the verify_callback() set in the SSL_CTX at the time of
9691 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
9692 to allow the necessary settings.
9695 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
9696 explicitly to NULL, as at least on Solaris 8 this seems not always to be
9697 done automatically (in contradiction to the requirements of the C
9698 standard). This made problems when used from OpenSSH.
9701 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
9702 dh->length and always used
9704 BN_rand_range(priv_key, dh->p).
9706 BN_rand_range() is not necessary for Diffie-Hellman, and this
9707 specific range makes Diffie-Hellman unnecessarily inefficient if
9708 dh->length (recommended exponent length) is much smaller than the
9709 length of dh->p. We could use BN_rand_range() if the order of
9710 the subgroup was stored in the DH structure, but we only have
9715 BN_rand(priv_key, l, ...)
9717 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
9723 RSA_eay_public_encrypt
9724 RSA_eay_private_decrypt
9725 RSA_eay_private_encrypt (signing)
9726 RSA_eay_public_decrypt (signature verification)
9728 (default implementations for RSA_public_encrypt,
9729 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
9730 always reject numbers >= n.
9733 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
9734 to synchronize access to 'locking_thread'. This is necessary on
9735 systems where access to 'locking_thread' (an 'unsigned long'
9736 variable) is not atomic.
9739 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
9740 *before* setting the 'crypto_lock_rand' flag. The previous code had
9741 a race condition if 0 is a valid thread ID.
9742 [Travis Vitek <vitek@roguewave.com>]
9744 *) Add support for shared libraries under Irix.
9745 [Albert Chin-A-Young <china@thewrittenword.com>]
9747 *) Add configuration option to build on Linux on both big-endian and
9749 [Ralf Baechle <ralf@uni-koblenz.de>]
9751 *) Add the possibility to create shared libraries on HP-UX.
9754 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
9756 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
9757 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
9758 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
9759 PRNG state recovery was possible based on the output of
9760 one PRNG request appropriately sized to gain knowledge on
9761 'md' followed by enough consecutive 1-byte PRNG requests
9762 to traverse all of 'state'.
9764 1. When updating 'md_local' (the current thread's copy of 'md')
9765 during PRNG output generation, hash all of the previous
9766 'md_local' value, not just the half used for PRNG output.
9768 2. Make the number of bytes from 'state' included into the hash
9769 independent from the number of PRNG bytes requested.
9771 The first measure alone would be sufficient to avoid
9772 Markku-Juhani's attack. (Actually it had never occurred
9773 to me that the half of 'md_local' used for chaining was the
9774 half from which PRNG output bytes were taken -- I had always
9775 assumed that the secret half would be used.) The second
9776 measure makes sure that additional data from 'state' is never
9777 mixed into 'md_local' in small portions; this heuristically
9778 further strengthens the PRNG.
9781 *) Fix crypto/bn/asm/mips3.s.
9784 *) When only the key is given to "enc", the IV is undefined. Print out
9785 an error message in this case.
9788 *) Handle special case when X509_NAME is empty in X509 printing routines.
9791 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
9792 positive and less than q.
9795 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
9796 used: it isn't thread safe and the add_lock_callback should handle
9798 [Paul Rose <Paul.Rose@bridge.com>]
9800 *) Verify that incoming data obeys the block size in
9801 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
9805 [Ulf Möller, Bodo Möller]
9807 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
9808 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
9809 when fixing the server behaviour for backwards-compatible 'client
9810 hello' messages. (Note that the attack is impractical against
9811 SSL 3.0 and TLS 1.0 anyway because length and version checking
9812 means that the probability of guessing a valid ciphertext is
9813 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
9816 Before 0.9.5, the countermeasure (hide the error by generating a
9817 random 'decryption result') did not work properly because
9818 ERR_clear_error() was missing, meaning that SSL_get_error() would
9819 detect the supposedly ignored error.
9821 Both problems are now fixed.
9824 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
9825 (previously it was 1024).
9828 *) Fix for compatibility mode trust settings: ignore trust settings
9829 unless some valid trust or reject settings are present.
9832 *) Fix for blowfish EVP: its a variable length cipher.
9835 *) Fix various bugs related to DSA S/MIME verification. Handle missing
9836 parameters in DSA public key structures and return an error in the
9837 DSA routines if parameters are absent.
9840 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
9841 in the current directory if neither $RANDFILE nor $HOME was set.
9842 RAND_file_name() in 0.9.6a returned NULL in this case. This has
9843 caused some confusion to Windows users who haven't defined $HOME.
9844 Thus RAND_file_name() is changed again: e_os.h can define a
9845 DEFAULT_HOME, which will be used if $HOME is not set.
9846 For Windows, we use "C:"; on other platforms, we still require
9847 environment variables.
9849 *) Move 'if (!initialized) RAND_poll()' into regions protected by
9850 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
9851 having multiple threads call RAND_poll() concurrently.
9854 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
9855 combination of a flag and a thread ID variable.
9856 Otherwise while one thread is in ssleay_rand_bytes (which sets the
9857 flag), *other* threads can enter ssleay_add_bytes without obeying
9858 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
9859 that they do not hold after the first thread unsets add_do_not_lock).
9862 *) Change bctest again: '-x' expressions are not available in all
9866 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
9868 *) Fix a couple of memory leaks in PKCS7_dataDecode()
9869 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
9871 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
9872 the default extension for executables, if any. Also, make the perl
9873 scripts that use symlink() to test if it really exists and use "cp"
9874 if it doesn't. All this made OpenSSL compilable and installable in
9878 *) Fix for asn1_GetSequence() for indefinite length constructed data.
9879 If SEQUENCE is length is indefinite just set c->slen to the total
9880 amount of data available.
9881 [Steve Henson, reported by shige@FreeBSD.org]
9882 [This change does not apply to 0.9.7.]
9884 *) Change bctest to avoid here-documents inside command substitution
9885 (workaround for FreeBSD /bin/sh bug).
9886 For compatibility with Ultrix, avoid shell functions (introduced
9887 in the bctest version that searches along $PATH).
9890 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
9891 with des_encrypt() defined on some operating systems, like Solaris
9895 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
9896 On the Importance of Eliminating Errors in Cryptographic
9897 Computations, J. Cryptology 14 (2001) 2, 101-119,
9898 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
9901 *) MIPS assembler BIGNUM division bug fix.
9904 *) Disabled incorrect Alpha assembler code.
9907 *) Fix PKCS#7 decode routines so they correctly update the length
9908 after reading an EOC for the EXPLICIT tag.
9910 [This change does not apply to 0.9.7.]
9912 *) Fix bug in PKCS#12 key generation routines. This was triggered
9913 if a 3DES key was generated with a 0 initial byte. Include
9914 PKCS12_BROKEN_KEYGEN compilation option to retain the old
9915 (but broken) behaviour.
9918 *) Enhance bctest to search for a working bc along $PATH and print
9920 [Tim Rice <tim@multitalents.net> via Richard Levitte]
9922 *) Fix memory leaks in err.c: free err_data string if necessary;
9923 don't write to the wrong index in ERR_set_error_data.
9926 *) Implement ssl23_peek (analogous to ssl23_read), which previously
9930 *) Replace rdtsc with _emit statements for VC++ version 5.
9931 [Jeremy Cooper <jeremy@baymoo.org>]
9933 *) Make it possible to reuse SSLv2 sessions.
9936 *) In copy_email() check for >= 0 as a return value for
9937 X509_NAME_get_index_by_NID() since 0 is a valid index.
9938 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
9940 *) Avoid coredump with unsupported or invalid public keys by checking if
9941 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
9942 PKCS7_verify() fails with non detached data.
9945 *) Don't use getenv in library functions when run as setuid/setgid.
9946 New function OPENSSL_issetugid().
9949 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
9950 due to incorrect handling of multi-threading:
9952 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
9954 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
9956 3. Count how many times MemCheck_off() has been called so that
9957 nested use can be treated correctly. This also avoids
9958 inband-signalling in the previous code (which relied on the
9959 assumption that thread ID 0 is impossible).
9962 *) Add "-rand" option also to s_client and s_server.
9965 *) Fix CPU detection on Irix 6.x.
9966 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
9967 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
9969 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
9972 [This change does not apply to 0.9.7.]
9974 *) Use the cached encoding of an X509_NAME structure rather than
9975 copying it. This is apparently the reason for the libsafe "errors"
9976 but the code is actually correct.
9979 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
9980 Bleichenbacher's DSA attack.
9981 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
9982 to be set and top=0 forces the highest bit to be set; top=-1 is new
9983 and leaves the highest bit random.
9984 [Ulf Moeller, Bodo Moeller]
9986 *) In the NCONF_...-based implementations for CONF_... queries
9987 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
9988 a temporary CONF structure with the data component set to NULL
9989 (which gives segmentation faults in lh_retrieve).
9990 Instead, use NULL for the CONF pointer in CONF_get_string and
9991 CONF_get_number (which may use environment variables) and directly
9992 return NULL from CONF_get_section.
9995 *) Fix potential buffer overrun for EBCDIC.
9998 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
9999 keyUsage if basicConstraints absent for a CA.
10002 *) Make SMIME_write_PKCS7() write mail header values with a format that
10003 is more generally accepted (no spaces before the semicolon), since
10004 some programs can't parse those values properly otherwise. Also make
10005 sure BIO's that break lines after each write do not create invalid
10009 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
10010 macros previously used would not encode an empty SEQUENCE OF
10011 and break the signature.
10013 [This change does not apply to 0.9.7.]
10015 *) Zero the premaster secret after deriving the master secret in
10019 *) Add some EVP_add_digest_alias registrations (as found in
10020 OpenSSL_add_all_digests()) to SSL_library_init()
10021 aka OpenSSL_add_ssl_algorithms(). This provides improved
10022 compatibility with peers using X.509 certificates
10023 with unconventional AlgorithmIdentifier OIDs.
10026 *) Fix for Irix with NO_ASM.
10027 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
10029 *) ./config script fixes.
10030 [Ulf Moeller, Richard Levitte]
10032 *) Fix 'openssl passwd -1'.
10035 *) Change PKCS12_key_gen_asc() so it can cope with non null
10036 terminated strings whose length is passed in the passlen
10037 parameter, for example from PEM callbacks. This was done
10038 by adding an extra length parameter to asc2uni().
10039 [Steve Henson, reported by <oddissey@samsung.co.kr>]
10041 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
10042 call failed, free the DSA structure.
10045 *) Fix to uni2asc() to cope with zero length Unicode strings.
10046 These are present in some PKCS#12 files.
10049 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
10050 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
10051 when writing a 32767 byte record.
10052 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
10054 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
10055 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
10057 (RSA objects have a reference count access to which is protected
10058 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
10059 so they are meant to be shared between threads.)
10060 [Bodo Moeller, Geoff Thorpe; original patch submitted by
10061 "Reddie, Steven" <Steven.Reddie@ca.com>]
10063 *) Fix a deadlock in CRYPTO_mem_leaks().
10066 *) Use better test patterns in bntest.
10069 *) rand_win.c fix for Borland C.
10072 *) BN_rshift bugfix for n == 0.
10075 *) Add a 'bctest' script that checks for some known 'bc' bugs
10076 so that 'make test' does not abort just because 'bc' is broken.
10079 *) Store verify_result within SSL_SESSION also for client side to
10080 avoid potential security hole. (Re-used sessions on the client side
10081 always resulted in verify_result==X509_V_OK, not using the original
10082 result of the server certificate verification.)
10085 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
10086 SSL3_RT_APPLICATION_DATA, return 0.
10087 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
10091 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
10092 releases, have been re-implemented by renaming the previous
10093 implementations of ssl2_read and ssl3_read to ssl2_read_internal
10094 and ssl3_read_internal, respectively, and adding 'peek' parameters
10095 to them. The new ssl[23]_{read,peek} functions are calls to
10096 ssl[23]_read_internal with the 'peek' flag set appropriately.
10097 A 'peek' parameter has also been added to ssl3_read_bytes, which
10098 does the actual work for ssl3_read_internal.
10101 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
10102 the method-specific "init()" handler. Also clean up ex_data after
10103 calling the method-specific "finish()" handler. Previously, this was
10104 happening the other way round.
10107 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
10108 The previous value, 12, was not always sufficient for BN_mod_exp().
10111 *) Make sure that shared libraries get the internal name engine with
10112 the full version number and not just 0. This should mark the
10113 shared libraries as not backward compatible. Of course, this should
10114 be changed again when we can guarantee backward binary compatibility.
10117 *) Fix typo in get_cert_by_subject() in by_dir.c
10118 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
10120 *) Rework the system to generate shared libraries:
10122 - Make note of the expected extension for the shared libraries and
10123 if there is a need for symbolic links from for example libcrypto.so.0
10124 to libcrypto.so.0.9.7. There is extended info in Configure for
10127 - Make as few rebuilds of the shared libraries as possible.
10129 - Still avoid linking the OpenSSL programs with the shared libraries.
10131 - When installing, install the shared libraries separately from the
10135 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
10137 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
10138 and not in SSL_clear because the latter is also used by the
10139 accept/connect functions; previously, the settings made by
10140 SSL_set_read_ahead would be lost during the handshake.
10141 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
10143 *) Correct util/mkdef.pl to be selective about disabled algorithms.
10144 Previously, it would create entries for disabled algorithms no
10148 *) Added several new manual pages for SSL_* function.
10151 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
10153 *) In ssl23_get_client_hello, generate an error message when faced
10154 with an initial SSL 3.0/TLS record that is too small to contain the
10155 first two bytes of the ClientHello message, i.e. client_version.
10156 (Note that this is a pathologic case that probably has never happened
10157 in real life.) The previous approach was to use the version number
10158 from the record header as a substitute; but our protocol choice
10159 should not depend on that one because it is not authenticated
10160 by the Finished messages.
10163 *) More robust randomness gathering functions for Windows.
10164 [Jeffrey Altman <jaltman@columbia.edu>]
10166 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
10167 not set then we don't setup the error code for issuer check errors
10168 to avoid possibly overwriting other errors which the callback does
10169 handle. If an application does set the flag then we assume it knows
10170 what it is doing and can handle the new informational codes
10174 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
10175 a general "ANY" type, as such it should be able to decode anything
10176 including tagged types. However it didn't check the class so it would
10177 wrongly interpret tagged types in the same way as their universal
10178 counterpart and unknown types were just rejected. Changed so that the
10179 tagged and unknown types are handled in the same way as a SEQUENCE:
10180 that is the encoding is stored intact. There is also a new type
10181 "V_ASN1_OTHER" which is used when the class is not universal, in this
10182 case we have no idea what the actual type is so we just lump them all
10186 *) On VMS, stdout may very well lead to a file that is written to
10187 in a record-oriented fashion. That means that every write() will
10188 write a separate record, which will be read separately by the
10189 programs trying to read from it. This can be very confusing.
10191 The solution is to put a BIO filter in the way that will buffer
10192 text until a linefeed is reached, and then write everything a
10193 line at a time, so every record written will be an actual line,
10194 not chunks of lines and not (usually doesn't happen, but I've
10195 seen it once) several lines in one record. BIO_f_linebuffer() is
10198 Currently, it's a VMS-only method, because that's where it has
10199 been tested well enough.
10202 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
10203 it can return incorrect results.
10204 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
10205 but it was in 0.9.6-beta[12].)
10208 *) Disable the check for content being present when verifying detached
10209 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
10210 include zero length content when signing messages.
10213 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
10214 BIO_ctrl (for BIO pairs).
10217 *) Add DSO method for VMS.
10220 *) Bug fix: Montgomery multiplication could produce results with the
10224 *) Add RPM specification openssl.spec and modify it to build three
10225 packages. The default package contains applications, application
10226 documentation and run-time libraries. The devel package contains
10227 include files, static libraries and function documentation. The
10228 doc package contains the contents of the doc directory. The original
10229 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
10232 *) Add a large number of documentation files for many SSL routines.
10233 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
10235 *) Add a configuration entry for Sony News 4.
10236 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
10238 *) Don't set the two most significant bits to one when generating a
10239 random number < q in the DSA library.
10242 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
10243 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
10244 the underlying transport is blocking) if a handshake took place.
10245 (The default behaviour is needed by applications such as s_client
10246 and s_server that use select() to determine when to use SSL_read;
10247 but for applications that know in advance when to expect data, it
10248 just makes things more complicated.)
10251 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
10255 *) Add a few more EBCDIC conditionals that make `req' and `x509'
10256 work better on such systems.
10257 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10259 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
10260 Update PKCS12_parse() so it copies the friendlyName and the
10261 keyid to the certificates aux info.
10264 *) Fix bug in PKCS7_verify() which caused an infinite loop
10265 if there was more than one signature.
10266 [Sven Uszpelkat <su@celocom.de>]
10268 *) Major change in util/mkdef.pl to include extra information
10269 about each symbol, as well as presenting variables as well
10270 as functions. This change means that there's n more need
10271 to rebuild the .num files when some algorithms are excluded.
10274 *) Allow the verify time to be set by an application,
10275 rather than always using the current time.
10278 *) Phase 2 verify code reorganisation. The certificate
10279 verify code now looks up an issuer certificate by a
10280 number of criteria: subject name, authority key id
10281 and key usage. It also verifies self signed certificates
10282 by the same criteria. The main comparison function is
10283 X509_check_issued() which performs these checks.
10285 Lot of changes were necessary in order to support this
10286 without completely rewriting the lookup code.
10288 Authority and subject key identifier are now cached.
10290 The LHASH 'certs' is X509_STORE has now been replaced
10291 by a STACK_OF(X509_OBJECT). This is mainly because an
10292 LHASH can't store or retrieve multiple objects with
10293 the same hash value.
10295 As a result various functions (which were all internal
10296 use only) have changed to handle the new X509_STORE
10297 structure. This will break anything that messed round
10298 with X509_STORE internally.
10300 The functions X509_STORE_add_cert() now checks for an
10301 exact match, rather than just subject name.
10303 The X509_STORE API doesn't directly support the retrieval
10304 of multiple certificates matching a given criteria, however
10305 this can be worked round by performing a lookup first
10306 (which will fill the cache with candidate certificates)
10307 and then examining the cache for matches. This is probably
10308 the best we can do without throwing out X509_LOOKUP
10309 entirely (maybe later...).
10311 The X509_VERIFY_CTX structure has been enhanced considerably.
10313 All certificate lookup operations now go via a get_issuer()
10314 callback. Although this currently uses an X509_STORE it
10315 can be replaced by custom lookups. This is a simple way
10316 to bypass the X509_STORE hackery necessary to make this
10317 work and makes it possible to use more efficient techniques
10318 in future. A very simple version which uses a simple
10319 STACK for its trusted certificate store is also provided
10320 using X509_STORE_CTX_trusted_stack().
10322 The verify_cb() and verify() callbacks now have equivalents
10323 in the X509_STORE_CTX structure.
10325 X509_STORE_CTX also has a 'flags' field which can be used
10326 to customise the verify behaviour.
10329 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
10330 excludes S/MIME capabilities.
10333 *) When a certificate request is read in keep a copy of the
10334 original encoding of the signed data and use it when outputting
10335 again. Signatures then use the original encoding rather than
10336 a decoded, encoded version which may cause problems if the
10337 request is improperly encoded.
10340 *) For consistency with other BIO_puts implementations, call
10341 buffer_write(b, ...) directly in buffer_puts instead of calling
10344 In BIO_puts, increment b->num_write as in BIO_write.
10345 [Peter.Sylvester@EdelWeb.fr]
10347 *) Fix BN_mul_word for the case where the word is 0. (We have to use
10348 BN_zero, we may not return a BIGNUM with an array consisting of
10349 words set to zero.)
10352 *) Avoid calling abort() from within the library when problems are
10353 detected, except if preprocessor symbols have been defined
10354 (such as REF_CHECK, BN_DEBUG etc.).
10357 *) New openssl application 'rsautl'. This utility can be
10358 used for low level RSA operations. DER public key
10359 BIO/fp routines also added.
10362 *) New Configure entry and patches for compiling on QNX 4.
10363 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
10365 *) A demo state-machine implementation was sponsored by
10366 Nuron (http://www.nuron.com/) and is now available in
10367 demos/state_machine.
10370 *) New options added to the 'dgst' utility for signature
10371 generation and verification.
10374 *) Unrecognized PKCS#7 content types are now handled via a
10375 catch all ASN1_TYPE structure. This allows unsupported
10376 types to be stored as a "blob" and an application can
10377 encode and decode it manually.
10380 *) Fix various signed/unsigned issues to make a_strex.c
10381 compile under VC++.
10382 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
10384 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
10385 length if passed a buffer. ASN1_INTEGER_to_BN failed
10386 if passed a NULL BN and its argument was negative.
10387 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
10389 *) Modification to PKCS#7 encoding routines to output definite
10390 length encoding. Since currently the whole structures are in
10391 memory there's not real point in using indefinite length
10392 constructed encoding. However if OpenSSL is compiled with
10393 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
10396 *) Added BIO_vprintf() and BIO_vsnprintf().
10399 *) Added more prefixes to parse for in the strings written
10400 through a logging bio, to cover all the levels that are available
10401 through syslog. The prefixes are now:
10403 PANIC, EMERG, EMR => LOG_EMERG
10404 ALERT, ALR => LOG_ALERT
10405 CRIT, CRI => LOG_CRIT
10406 ERROR, ERR => LOG_ERR
10407 WARNING, WARN, WAR => LOG_WARNING
10408 NOTICE, NOTE, NOT => LOG_NOTICE
10409 INFO, INF => LOG_INFO
10410 DEBUG, DBG => LOG_DEBUG
10412 and as before, if none of those prefixes are present at the
10413 beginning of the string, LOG_ERR is chosen.
10415 On Win32, the LOG_* levels are mapped according to this:
10417 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
10418 LOG_WARNING => EVENTLOG_WARNING_TYPE
10419 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
10423 *) Made it possible to reconfigure with just the configuration
10424 argument "reconf" or "reconfigure". The command line arguments
10425 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
10426 and are retrieved from there when reconfiguring.
10429 *) MD4 implemented.
10430 [Assar Westerlund <assar@sics.se>, Richard Levitte]
10432 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
10435 *) The obj_dat.pl script was messing up the sorting of object
10436 names. The reason was that it compared the quoted version
10437 of strings as a result "OCSP" > "OCSP Signing" because
10438 " > SPACE. Changed script to store unquoted versions of
10439 names and add quotes on output. It was also omitting some
10440 names from the lookup table if they were given a default
10441 value (that is if SN is missing it is given the same
10442 value as LN and vice versa), these are now added on the
10443 grounds that if an object has a name we should be able to
10444 look it up. Finally added warning output when duplicate
10445 short or long names are found.
10448 *) Changes needed for Tandem NSK.
10449 [Scott Uroff <scott@xypro.com>]
10451 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
10452 RSA_padding_check_SSLv23(), special padding was never detected
10453 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
10454 version rollback attacks was not effective.
10456 In s23_clnt.c, don't use special rollback-attack detection padding
10457 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
10458 client; similarly, in s23_srvr.c, don't do the rollback check if
10459 SSL 2.0 is the only protocol enabled in the server.
10462 *) Make it possible to get hexdumps of unprintable data with 'openssl
10463 asn1parse'. By implication, the functions ASN1_parse_dump() and
10464 BIO_dump_indent() are added.
10467 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
10468 these print out strings and name structures based on various
10469 flags including RFC2253 support and proper handling of
10470 multibyte characters. Added options to the 'x509' utility
10471 to allow the various flags to be set.
10474 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
10475 Also change the functions X509_cmp_current_time() and
10476 X509_gmtime_adj() work with an ASN1_TIME structure,
10477 this will enable certificates using GeneralizedTime in validity
10478 dates to be checked.
10481 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
10482 negative public key encodings) on by default,
10483 NO_NEG_PUBKEY_BUG can be set to disable it.
10486 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
10487 content octets. An i2c_ASN1_OBJECT is unnecessary because
10488 the encoding can be trivially obtained from the structure.
10491 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
10492 not read locks (CRYPTO_r_[un]lock).
10495 *) A first attempt at creating official support for shared
10496 libraries through configuration. I've kept it so the
10497 default is static libraries only, and the OpenSSL programs
10498 are always statically linked for now, but there are
10499 preparations for dynamic linking in place.
10500 This has been tested on Linux and Tru64.
10503 *) Randomness polling function for Win9x, as described in:
10504 Peter Gutmann, Software Generation of Practically Strong
10508 *) Fix so PRNG is seeded in req if using an already existing
10512 *) New options to smime application. -inform and -outform
10513 allow alternative formats for the S/MIME message including
10514 PEM and DER. The -content option allows the content to be
10515 specified separately. This should allow things like Netscape
10516 form signing output easier to verify.
10519 *) Fix the ASN1 encoding of tags using the 'long form'.
10522 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
10523 STRING types. These convert content octets to and from the
10524 underlying type. The actual tag and length octets are
10525 already assumed to have been read in and checked. These
10526 are needed because all other string types have virtually
10527 identical handling apart from the tag. By having versions
10528 of the ASN1 functions that just operate on content octets
10529 IMPLICIT tagging can be handled properly. It also allows
10530 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
10531 and ASN1_INTEGER are identical apart from the tag.
10534 *) Change the handling of OID objects as follows:
10536 - New object identifiers are inserted in objects.txt, following
10537 the syntax given in objects.README.
10538 - objects.pl is used to process obj_mac.num and create a new
10540 - obj_dat.pl is used to create a new obj_dat.h, using the data in
10543 This is currently kind of a hack, and the perl code in objects.pl
10544 isn't very elegant, but it works as I intended. The simplest way
10545 to check that it worked correctly is to look in obj_dat.h and
10546 check the array nid_objs and make sure the objects haven't moved
10547 around (this is important!). Additions are OK, as well as
10548 consistent name changes.
10551 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
10554 *) Addition of the command line parameter '-rand file' to 'openssl req'.
10555 The given file adds to whatever has already been seeded into the
10556 random pool through the RANDFILE configuration file option or
10557 environment variable, or the default random state file.
10560 *) mkstack.pl now sorts each macro group into lexical order.
10561 Previously the output order depended on the order the files
10562 appeared in the directory, resulting in needless rewriting
10566 *) Patches to make OpenSSL compile under Win32 again. Mostly
10567 work arounds for the VC++ problem that it treats func() as
10568 func(void). Also stripped out the parts of mkdef.pl that
10569 added extra typesafe functions: these no longer exist.
10572 *) Reorganisation of the stack code. The macros are now all
10573 collected in safestack.h . Each macro is defined in terms of
10574 a "stack macro" of the form SKM_<name>(type, a, b). The
10575 DEBUG_SAFESTACK is now handled in terms of function casts,
10576 this has the advantage of retaining type safety without the
10577 use of additional functions. If DEBUG_SAFESTACK is not defined
10578 then the non typesafe macros are used instead. Also modified the
10579 mkstack.pl script to handle the new form. Needs testing to see
10580 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
10581 the default if no major problems. Similar behaviour for ASN1_SET_OF
10582 and PKCS12_STACK_OF.
10585 *) When some versions of IIS use the 'NET' form of private key the
10586 key derivation algorithm is different. Normally MD5(password) is
10587 used as a 128 bit RC4 key. In the modified case
10588 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
10589 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
10590 as the old Netscape_RSA functions except they have an additional
10591 'sgckey' parameter which uses the modified algorithm. Also added
10592 an -sgckey command line option to the rsa utility. Thanks to
10593 Adrian Peck <bertie@ncipher.com> for posting details of the modified
10594 algorithm to openssl-dev.
10597 *) The evp_local.h macros were using 'c.##kname' which resulted in
10598 invalid expansion on some systems (SCO 5.0.5 for example).
10599 Corrected to 'c.kname'.
10600 [Phillip Porch <root@theporch.com>]
10602 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
10603 a STACK of email addresses from a certificate or request, these look
10604 in the subject name and the subject alternative name extensions and
10605 omit any duplicate addresses.
10608 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
10609 This makes DSA verification about 2 % faster.
10612 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
10613 (meaning that now 2^5 values will be precomputed, which is only 4 KB
10614 plus overhead for 1024 bit moduli).
10615 This makes exponentiations about 0.5 % faster for 1024 bit
10616 exponents (as measured by "openssl speed rsa2048").
10619 *) Rename memory handling macros to avoid conflicts with other
10621 Malloc => OPENSSL_malloc
10622 Malloc_locked => OPENSSL_malloc_locked
10623 Realloc => OPENSSL_realloc
10624 Free => OPENSSL_free
10627 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
10628 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
10631 *) CygWin32 support.
10632 [John Jarvie <jjarvie@newsguy.com>]
10634 *) The type-safe stack code has been rejigged. It is now only compiled
10635 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
10636 by default all type-specific stack functions are "#define"d back to
10637 standard stack functions. This results in more streamlined output
10638 but retains the type-safety checking possibilities of the original
10642 *) The STACK code has been cleaned up, and certain type declarations
10643 that didn't make a lot of sense have been brought in line. This has
10644 also involved a cleanup of sorts in safestack.h to more correctly
10645 map type-safe stack functions onto their plain stack counterparts.
10646 This work has also resulted in a variety of "const"ifications of
10647 lots of the code, especially "_cmp" operations which should normally
10648 be prototyped with "const" parameters anyway.
10651 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
10652 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
10653 (The PRNG state consists of two parts, the large pool 'state' and 'md',
10654 where all of 'md' is used each time the PRNG is used, but 'state'
10655 is used only indexed by a cyclic counter. As entropy may not be
10656 well distributed from the beginning, 'md' is important as a
10657 chaining variable. However, the output function chains only half
10658 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
10659 all of 'md', and seeding with STATE_SIZE dummy bytes will result
10660 in all of 'state' being rewritten, with the new values depending
10661 on virtually all of 'md'. This overcomes the 80 bit limitation.)
10664 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
10665 the handshake is continued after ssl_verify_cert_chain();
10666 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
10667 can lead to 'unexplainable' connection aborts later.
10668 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
10670 *) Major EVP API cipher revision.
10671 Add hooks for extra EVP features. This allows various cipher
10672 parameters to be set in the EVP interface. Support added for variable
10673 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
10674 setting of RC2 and RC5 parameters.
10676 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
10679 Remove lots of duplicated code from the EVP library. For example *every*
10680 cipher init() function handles the 'iv' in the same way according to the
10681 cipher mode. They also all do nothing if the 'key' parameter is NULL and
10682 for CFB and OFB modes they zero ctx->num.
10684 New functionality allows removal of S/MIME code RC2 hack.
10686 Most of the routines have the same form and so can be declared in terms
10689 By shifting this to the top level EVP_CipherInit() it can be removed from
10690 all individual ciphers. If the cipher wants to handle IVs or keys
10691 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
10694 Change lots of functions like EVP_EncryptUpdate() to now return a
10695 value: although software versions of the algorithms cannot fail
10696 any installed hardware versions can.
10699 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
10700 this option is set, tolerate broken clients that send the negotiated
10701 protocol version number instead of the requested protocol version
10705 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
10706 i.e. non-zero for export ciphersuites, zero otherwise.
10707 Previous versions had this flag inverted, inconsistent with
10708 rsa_tmp_cb (..._TMP_RSA_CB).
10709 [Bodo Moeller; problem reported by Amit Chopra]
10711 *) Add missing DSA library text string. Work around for some IIS
10712 key files with invalid SEQUENCE encoding.
10715 *) Add a document (doc/standards.txt) that list all kinds of standards
10716 and so on that are implemented in OpenSSL.
10719 *) Enhance c_rehash script. Old version would mishandle certificates
10720 with the same subject name hash and wouldn't handle CRLs at all.
10721 Added -fingerprint option to crl utility, to support new c_rehash
10725 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
10728 *) Fix for SSL server purpose checking. Server checking was
10729 rejecting certificates which had extended key usage present
10730 but no ssl client purpose.
10731 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
10733 *) Make PKCS#12 code work with no password. The PKCS#12 spec
10734 is a little unclear about how a blank password is handled.
10735 Since the password in encoded as a BMPString with terminating
10736 double NULL a zero length password would end up as just the
10737 double NULL. However no password at all is different and is
10738 handled differently in the PKCS#12 key generation code. NS
10739 treats a blank password as zero length. MSIE treats it as no
10740 password on export: but it will try both on import. We now do
10741 the same: PKCS12_parse() tries zero length and no password if
10742 the password is set to "" or NULL (NULL is now a valid password:
10743 it wasn't before) as does the pkcs12 application.
10746 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
10747 perror when PEM_read_bio_X509_REQ fails, the error message must
10748 be obtained from the error queue.
10751 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
10752 it in ERR_remove_state if appropriate, and change ERR_get_state
10753 accordingly to avoid race conditions (this is necessary because
10754 thread_hash is no longer constant once set).
10757 *) Bugfix for linux-elf makefile.one.
10760 *) RSA_get_default_method() will now cause a default
10761 RSA_METHOD to be chosen if one doesn't exist already.
10762 Previously this was only set during a call to RSA_new()
10763 or RSA_new_method(NULL) meaning it was possible for
10764 RSA_get_default_method() to return NULL.
10767 *) Added native name translation to the existing DSO code
10768 that will convert (if the flag to do so is set) filenames
10769 that are sufficiently small and have no path information
10770 into a canonical native form. Eg. "blah" converted to
10771 "libblah.so" or "blah.dll" etc.
10774 *) New function ERR_error_string_n(e, buf, len) which is like
10775 ERR_error_string(e, buf), but writes at most 'len' bytes
10776 including the 0 terminator. For ERR_error_string_n, 'buf'
10778 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
10780 *) CONF library reworked to become more general. A new CONF
10781 configuration file reader "class" is implemented as well as a
10782 new functions (NCONF_*, for "New CONF") to handle it. The now
10783 old CONF_* functions are still there, but are reimplemented to
10784 work in terms of the new functions. Also, a set of functions
10785 to handle the internal storage of the configuration data is
10786 provided to make it easier to write new configuration file
10787 reader "classes" (I can definitely see something reading a
10788 configuration file in XML format, for example), called _CONF_*,
10789 or "the configuration storage API"...
10791 The new configuration file reading functions are:
10793 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
10794 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
10796 NCONF_default, NCONF_WIN32
10798 NCONF_dump_fp, NCONF_dump_bio
10800 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
10801 NCONF_new creates a new CONF object. This works in the same way
10802 as other interfaces in OpenSSL, like the BIO interface.
10803 NCONF_dump_* dump the internal storage of the configuration file,
10804 which is useful for debugging. All other functions take the same
10805 arguments as the old CONF_* functions wth the exception of the
10806 first that must be a `CONF *' instead of a `LHASH *'.
10808 To make it easer to use the new classes with the old CONF_* functions,
10809 the function CONF_set_default_method is provided.
10812 *) Add '-tls1' option to 'openssl ciphers', which was already
10813 mentioned in the documentation but had not been implemented.
10814 (This option is not yet really useful because even the additional
10815 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
10818 *) Initial DSO code added into libcrypto for letting OpenSSL (and
10819 OpenSSL-based applications) load shared libraries and bind to
10820 them in a portable way.
10821 [Geoff Thorpe, with contributions from Richard Levitte]
10823 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
10825 *) Make sure _lrotl and _lrotr are only used with MSVC.
10827 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
10828 (the default implementation of RAND_status).
10830 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
10831 to '-clrext' (= clear extensions), as intended and documented.
10832 [Bodo Moeller; inconsistency pointed out by Michael Attili
10833 <attili@amaxo.com>]
10835 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
10836 was larger than the MD block size.
10837 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
10839 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
10840 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
10841 using the passed key: if the passed key was a private key the result
10842 of X509_print(), for example, would be to print out all the private key
10846 *) des_quad_cksum() byte order bug fix.
10847 [Ulf Möller, using the problem description in krb4-0.9.7, where
10848 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
10850 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
10852 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
10854 *) For easily testing in shell scripts whether some command
10855 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
10856 returns with exit code 0 iff no command of the given name is available.
10857 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
10858 the output goes to stdout and nothing is printed to stderr.
10859 Additional arguments are always ignored.
10861 Since for each cipher there is a command of the same name,
10862 the 'no-cipher' compilation switches can be tested this way.
10864 ('openssl no-XXX' is not able to detect pseudo-commands such
10865 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
10868 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
10871 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
10872 is set; it will be thrown away anyway because each handshake creates
10874 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
10875 to parameters -- in previous versions (since OpenSSL 0.9.3) the
10876 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
10877 you effectively got SSL_OP_SINGLE_DH_USE when using this macro.
10880 *) New s_client option -ign_eof: EOF at stdin is ignored, and
10881 'Q' and 'R' lose their special meanings (quit/renegotiate).
10882 This is part of what -quiet does; unlike -quiet, -ign_eof
10883 does not suppress any output.
10886 *) Add compatibility options to the purpose and trust code. The
10887 purpose X509_PURPOSE_ANY is "any purpose" which automatically
10888 accepts a certificate or CA, this was the previous behaviour,
10889 with all the associated security issues.
10891 X509_TRUST_COMPAT is the old trust behaviour: only and
10892 automatically trust self signed roots in certificate store. A
10893 new trust setting X509_TRUST_DEFAULT is used to specify that
10894 a purpose has no associated trust setting and it should instead
10895 use the value in the default purpose.
10898 *) Fix the PKCS#8 DSA private key code so it decodes keys again
10899 and fix a memory leak.
10902 *) In util/mkerr.pl (which implements 'make errors'), preserve
10903 reason strings from the previous version of the .c file, as
10904 the default to have only downcase letters (and digits) in
10905 automatically generated reasons codes is not always appropriate.
10908 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
10909 using strerror. Previously, ERR_reason_error_string() returned
10910 library names as reason strings for SYSerr; but SYSerr is a special
10911 case where small numbers are errno values, not library numbers.
10914 *) Add '-dsaparam' option to 'openssl dhparam' application. This
10915 converts DSA parameters into DH parameters. (When creating parameters,
10916 DSA_generate_parameters is used.)
10919 *) Include 'length' (recommended exponent length) in C code generated
10920 by 'openssl dhparam -C'.
10923 *) The second argument to set_label in perlasm was already being used
10924 so couldn't be used as a "file scope" flag. Moved to third argument
10928 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
10929 instead of RAND_bytes for encryption IVs and salts.
10932 *) Include RAND_status() into RAND_METHOD instead of implementing
10933 it only for md_rand.c Otherwise replacing the PRNG by calling
10934 RAND_set_rand_method would be impossible.
10937 *) Don't let DSA_generate_key() enter an infinite loop if the random
10938 number generation fails.
10941 *) New 'rand' application for creating pseudo-random output.
10944 *) Added configuration support for Linux/IA64
10945 [Rolf Haberrecker <rolf@suse.de>]
10947 *) Assembler module support for Mingw32.
10950 *) Shared library support for HPUX (in shlib/).
10951 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
10953 *) Shared library support for Solaris gcc.
10954 [Lutz Behnke <behnke@trustcenter.de>]
10956 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
10958 *) PKCS7_encrypt() was adding text MIME headers twice because they
10959 were added manually and by SMIME_crlf_copy().
10962 *) In bntest.c don't call BN_rand with zero bits argument.
10963 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
10965 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
10966 case was implemented. This caused BN_div_recp() to fail occasionally.
10969 *) Add an optional second argument to the set_label() in the perl
10970 assembly language builder. If this argument exists and is set
10971 to 1 it signals that the assembler should use a symbol whose
10972 scope is the entire file, not just the current function. This
10973 is needed with MASM which uses the format label:: for this scope.
10974 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
10976 *) Change the ASN1 types so they are typedefs by default. Before
10977 almost all types were #define'd to ASN1_STRING which was causing
10978 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
10982 *) Change names of new functions to the new get1/get0 naming
10983 convention: After 'get1', the caller owns a reference count
10984 and has to call ..._free; 'get0' returns a pointer to some
10985 data structure without incrementing reference counters.
10986 (Some of the existing 'get' functions increment a reference
10987 counter, some don't.)
10988 Similarly, 'set1' and 'add1' functions increase reference
10989 counters or duplicate objects.
10992 *) Allow for the possibility of temp RSA key generation failure:
10993 the code used to assume it always worked and crashed on failure.
10996 *) Fix potential buffer overrun problem in BIO_printf().
10997 [Ulf Möller, using public domain code by Patrick Powell; problem
10998 pointed out by David Sacerdote <das33@cornell.edu>]
11000 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
11001 RAND_egd() and RAND_status(). In the command line application,
11002 the EGD socket can be specified like a seed file using RANDFILE
11006 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
11007 Some CAs (e.g. Verisign) distribute certificates in this form.
11010 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
11011 list to exclude them. This means that no special compilation option
11012 is needed to use anonymous DH: it just needs to be included in the
11016 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
11017 EVP_MD_type. The old functionality is available in a new macro called
11018 EVP_MD_md(). Change code that uses it and update docs.
11021 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
11022 where the 'void *' argument is replaced by a function pointer argument.
11023 Previously 'void *' was abused to point to functions, which works on
11024 many platforms, but is not correct. As these functions are usually
11025 called by macros defined in OpenSSL header files, most source code
11026 should work without changes.
11029 *) <openssl/opensslconf.h> (which is created by Configure) now contains
11030 sections with information on -D... compiler switches used for
11031 compiling the library so that applications can see them. To enable
11032 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
11033 must be defined. E.g.,
11034 #define OPENSSL_ALGORITHM_DEFINES
11035 #include <openssl/opensslconf.h>
11036 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
11037 [Richard Levitte, Ulf and Bodo Möller]
11039 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
11043 *) Change the 'other' type in certificate aux info to a STACK_OF
11044 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
11045 the required ASN1 format: arbitrary types determined by an OID.
11048 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
11049 argument to 'req'. This is not because the function is newer or
11050 better than others it just uses the work 'NEW' in the certificate
11051 request header lines. Some software needs this.
11054 *) Reorganise password command line arguments: now passwords can be
11055 obtained from various sources. Delete the PEM_cb function and make
11056 it the default behaviour: i.e. if the callback is NULL and the
11057 usrdata argument is not NULL interpret it as a null terminated pass
11058 phrase. If usrdata and the callback are NULL then the pass phrase
11059 is prompted for as usual.
11062 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
11063 the support is automatically enabled. The resulting binaries will
11064 autodetect the card and use it if present.
11065 [Ben Laurie and Compaq Inc.]
11067 *) Work around for Netscape hang bug. This sends certificate request
11068 and server done in one record. Since this is perfectly legal in the
11069 SSL/TLS protocol it isn't a "bug" option and is on by default. See
11070 the bugs/SSLv3 entry for more info.
11073 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
11076 *) Add -rand argument to smime and pkcs12 applications and read/write
11080 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
11083 *) Add command line password options to the remaining applications.
11086 *) Bug fix for BN_div_recp() for numerators with an even number of
11090 *) More tests in bntest.c, and changed test_bn output.
11093 *) ./config recognizes MacOS X now.
11096 *) Bug fix for BN_div() when the first words of num and divisor are
11097 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
11100 *) Add support for various broken PKCS#8 formats, and command line
11101 options to produce them.
11104 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
11105 get temporary BIGNUMs from a BN_CTX.
11108 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
11112 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
11113 include a #define from the old name to the new. The original intent
11114 was that statically linked binaries could for example just call
11115 SSLeay_add_all_ciphers() to just add ciphers to the table and not
11116 link with digests. This never worked because SSLeay_add_all_digests()
11117 and SSLeay_add_all_ciphers() were in the same source file so calling
11118 one would link with the other. They are now in separate source files.
11121 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
11124 *) Use a less unusual form of the Miller-Rabin primality test (it used
11125 a binary algorithm for exponentiation integrated into the Miller-Rabin
11126 loop, our standard modexp algorithms are faster).
11129 *) Support for the EBCDIC character set completed.
11130 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
11132 *) Source code cleanups: use const where appropriate, eliminate casts,
11133 use void * instead of char * in lhash.
11136 *) Bugfix: ssl3_send_server_key_exchange was not restartable
11137 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
11138 this the server could overwrite ephemeral keys that the client
11142 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
11143 using 50 iterations of the Rabin-Miller test.
11145 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
11146 iterations of the Rabin-Miller test as required by the appendix
11147 to FIPS PUB 186[-1]) instead of DSA_is_prime.
11148 As BN_is_prime_fasttest includes trial division, DSA parameter
11149 generation becomes much faster.
11151 This implies a change for the callback functions in DSA_is_prime
11152 and DSA_generate_parameters: The callback function is called once
11153 for each positive witness in the Rabin-Miller test, not just
11154 occasionally in the inner loop; and the parameters to the
11155 callback function now provide an iteration count for the outer
11156 loop rather than for the current invocation of the inner loop.
11157 DSA_generate_parameters additionally can call the callback
11158 function with an 'iteration count' of -1, meaning that a
11159 candidate has passed the trial division test (when q is generated
11160 from an application-provided seed, trial division is skipped).
11163 *) New function BN_is_prime_fasttest that optionally does trial
11164 division before starting the Rabin-Miller test and has
11165 an additional BN_CTX * argument (whereas BN_is_prime always
11166 has to allocate at least one BN_CTX).
11167 'callback(1, -1, cb_arg)' is called when a number has passed the
11168 trial division stage.
11171 *) Fix for bug in CRL encoding. The validity dates weren't being handled
11175 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
11178 *) New function BN_pseudo_rand().
11181 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
11182 bignum version of BN_from_montgomery() with the working code from
11183 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
11187 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
11188 made it impossible to use the same SSL_SESSION data structure in
11189 SSL2 clients in multiple threads.
11192 *) The return value of RAND_load_file() no longer counts bytes obtained
11193 by stat(). RAND_load_file(..., -1) is new and uses the complete file
11194 to seed the PRNG (previously an explicit byte count was required).
11195 [Ulf Möller, Bodo Möller]
11197 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
11198 used (char *) instead of (void *) and had casts all over the place.
11201 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
11204 *) Retain source code compatibility for BN_prime_checks macro:
11205 BN_is_prime(..., BN_prime_checks, ...) now uses
11206 BN_prime_checks_for_size to determine the appropriate number of
11207 Rabin-Miller iterations.
11210 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
11211 DH_CHECK_P_NOT_SAFE_PRIME.
11212 (Check if this is true? OpenPGP calls them "strong".)
11215 *) Merge the functionality of "dh" and "gendh" programs into a new program
11216 "dhparam". The old programs are retained for now but will handle DH keys
11217 (instead of parameters) in future.
11220 *) Make the ciphers, s_server and s_client programs check the return values
11221 when a new cipher list is set.
11224 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
11225 ciphers. Before when the 56bit ciphers were enabled the sorting was
11228 The syntax for the cipher sorting has been extended to support sorting by
11229 cipher-strength (using the strength_bits hard coded in the tables).
11230 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
11232 Fix a bug in the cipher-command parser: when supplying a cipher command
11233 string with an "undefined" symbol (neither command nor alphanumeric
11234 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
11235 an error is flagged.
11237 Due to the strength-sorting extension, the code of the
11238 ssl_create_cipher_list() function was completely rearranged. I hope that
11239 the readability was also increased :-)
11240 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
11242 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
11243 for the first serial number and places 2 in the serial number file. This
11244 avoids problems when the root CA is created with serial number zero and
11245 the first user certificate has the same issuer name and serial number
11249 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
11250 the new code. Add documentation for this stuff.
11253 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
11254 X509_*() to X509at_*() on the grounds that they don't handle X509
11255 structures and behave in an analogous way to the X509v3 functions:
11256 they shouldn't be called directly but wrapper functions should be used
11259 So we also now have some wrapper functions that call the X509at functions
11260 when passed certificate requests. (TO DO: similar things can be done with
11261 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
11262 things. Some of these need some d2i or i2d and print functionality
11263 because they handle more complex structures.)
11266 *) Add missing #ifndefs that caused missing symbols when building libssl
11267 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
11268 NO_RSA in ssl/s2*.c.
11269 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
11271 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
11272 has a return value which indicates the quality of the random data
11273 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
11274 error queue. New function RAND_pseudo_bytes() generates output that is
11275 guaranteed to be unique but not unpredictable. RAND_add is like
11276 RAND_seed, but takes an extra argument for an entropy estimate
11277 (RAND_seed always assumes full entropy).
11280 *) Do more iterations of Rabin-Miller probable prime test (specifically,
11281 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
11282 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
11283 in crypto/bn/bn_prime.c for the complete table). This guarantees a
11284 false-positive rate of at most 2^-80 for random input.
11287 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
11290 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
11291 in the 0.9.5 release), this returns the chain
11292 from an X509_CTX structure with a dup of the stack and all
11293 the X509 reference counts upped: so the stack will exist
11294 after X509_CTX_cleanup() has been called. Modify pkcs12.c
11297 Also make SSL_SESSION_print() print out the verify return
11301 *) Add manpage for the pkcs12 command. Also change the default
11302 behaviour so MAC iteration counts are used unless the new
11303 -nomaciter option is used. This improves file security and
11304 only older versions of MSIE (4.0 for example) need it.
11307 *) Honor the no-xxx Configure options when creating .DEF files.
11310 *) Add PKCS#10 attributes to field table: challengePassword,
11311 unstructuredName and unstructuredAddress. These are taken from
11312 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
11313 international characters are used.
11315 More changes to X509_ATTRIBUTE code: allow the setting of types
11316 based on strings. Remove the 'loc' parameter when adding
11317 attributes because these will be a SET OF encoding which is sorted
11321 *) Initial changes to the 'req' utility to allow request generation
11322 automation. This will allow an application to just generate a template
11323 file containing all the field values and have req construct the
11326 Initial support for X509_ATTRIBUTE handling. Stacks of these are
11327 used all over the place including certificate requests and PKCS#7
11328 structures. They are currently handled manually where necessary with
11329 some primitive wrappers for PKCS#7. The new functions behave in a
11330 manner analogous to the X509 extension functions: they allow
11331 attributes to be looked up by NID and added.
11333 Later something similar to the X509V3 code would be desirable to
11334 automatically handle the encoding, decoding and printing of the
11335 more complex types. The string types like challengePassword can
11336 be handled by the string table functions.
11338 Also modified the multi byte string table handling. Now there is
11339 a 'global mask' which masks out certain types. The table itself
11340 can use the flag STABLE_NO_MASK to ignore the mask setting: this
11341 is useful when for example there is only one permissible type
11342 (as in countryName) and using the mask might result in no valid
11346 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
11347 SSL_get_peer_finished to allow applications to obtain the latest
11348 Finished messages sent to the peer or expected from the peer,
11349 respectively. (SSL_get_peer_finished is usually the Finished message
11350 actually received from the peer, otherwise the protocol will be aborted.)
11352 As the Finished message are message digests of the complete handshake
11353 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
11354 be used for external authentication procedures when the authentication
11355 provided by SSL/TLS is not desired or is not enough.
11358 *) Enhanced support for Alpha Linux is added. Now ./config checks if
11359 the host supports BWX extension and if Compaq C is present on the
11360 $PATH. Just exploiting of the BWX extension results in 20-30%
11361 performance kick for some algorithms, e.g. DES and RC4 to mention
11362 a couple. Compaq C in turn generates ~20% faster code for MD5 and
11366 *) Add support for MS "fast SGC". This is arguably a violation of the
11367 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
11368 weak crypto and after checking the certificate is SGC a second one
11369 with strong crypto. MS SGC stops the first handshake after receiving
11370 the server certificate message and sends a second client hello. Since
11371 a server will typically do all the time consuming operations before
11372 expecting any further messages from the client (server key exchange
11373 is the most expensive) there is little difference between the two.
11375 To get OpenSSL to support MS SGC we have to permit a second client
11376 hello message after we have sent server done. In addition we have to
11377 reset the MAC if we do get this second client hello.
11380 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
11381 if a DER encoded private key is RSA or DSA traditional format. Changed
11382 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
11383 format DER encoded private key. Newer code should use PKCS#8 format which
11384 has the key type encoded in the ASN1 structure. Added DER private key
11385 support to pkcs8 application.
11388 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
11389 ciphersuites has been selected (as required by the SSL 3/TLS 1
11390 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
11391 is set, we interpret this as a request to violate the specification
11392 (the worst that can happen is a handshake failure, and 'correct'
11393 behaviour would result in a handshake failure anyway).
11396 *) In SSL_CTX_add_session, take into account that there might be multiple
11397 SSL_SESSION structures with the same session ID (e.g. when two threads
11398 concurrently obtain them from an external cache).
11399 The internal cache can handle only one SSL_SESSION with a given ID,
11400 so if there's a conflict, we now throw out the old one to achieve
11404 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
11405 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
11406 some routines that use cipher OIDs: some ciphers do not have OIDs
11407 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
11411 *) Simplify the trust setting structure and code. Now we just have
11412 two sequences of OIDs for trusted and rejected settings. These will
11413 typically have values the same as the extended key usage extension
11414 and any application specific purposes.
11416 The trust checking code now has a default behaviour: it will just
11417 check for an object with the same NID as the passed id. Functions can
11418 be provided to override either the default behaviour or the behaviour
11419 for a given id. SSL client, server and email already have functions
11420 in place for compatibility: they check the NID and also return "trusted"
11421 if the certificate is self signed.
11424 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
11425 traditional format into an EVP_PKEY structure.
11428 *) Add a password callback function PEM_cb() which either prompts for
11429 a password if usr_data is NULL or otherwise assumes it is a null
11430 terminated password. Allow passwords to be passed on command line
11431 environment or config files in a few more utilities.
11434 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
11435 keys. Add some short names for PKCS#8 PBE algorithms and allow them
11436 to be specified on the command line for the pkcs8 and pkcs12 utilities.
11437 Update documentation.
11440 *) Support for ASN1 "NULL" type. This could be handled before by using
11441 ASN1_TYPE but there wasn't any function that would try to read a NULL
11442 and produce an error if it couldn't. For compatibility we also have
11443 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
11444 don't allocate anything because they don't need to.
11447 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
11449 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
11451 *) Rebuild of the memory allocation routines used by OpenSSL code and
11452 possibly others as well. The purpose is to make an interface that
11453 provide hooks so anyone can build a separate set of allocation and
11454 deallocation routines to be used by OpenSSL, for example memory
11455 pool implementations, or something else, which was previously hard
11456 since Malloc(), Realloc() and Free() were defined as macros having
11457 the values malloc, realloc and free, respectively (except for Win32
11458 compilations). The same is provided for memory debugging code.
11459 OpenSSL already comes with functionality to find memory leaks, but
11460 this gives people a chance to debug other memory problems.
11462 With these changes, a new set of functions and macros have appeared:
11464 CRYPTO_set_mem_debug_functions() [F]
11465 CRYPTO_get_mem_debug_functions() [F]
11466 CRYPTO_dbg_set_options() [F]
11467 CRYPTO_dbg_get_options() [F]
11468 CRYPTO_malloc_debug_init() [M]
11470 The memory debug functions are NULL by default, unless the library
11471 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
11472 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
11473 gives the standard debugging functions that come with OpenSSL) or
11474 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
11475 provided by the library user) must be used. When the standard
11476 debugging functions are used, CRYPTO_dbg_set_options can be used to
11477 request additional information:
11478 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
11479 the CRYPTO_MDEBUG_xxx macro when compiling the library.
11481 Also, things like CRYPTO_set_mem_functions will always give the
11482 expected result (the new set of functions is used for allocation
11483 and deallocation) at all times, regardless of platform and compiler
11486 To finish it up, some functions that were never use in any other
11487 way than through macros have a new API and new semantic:
11489 CRYPTO_dbg_malloc()
11490 CRYPTO_dbg_realloc()
11493 All macros of value have retained their old syntax.
11494 [Richard Levitte and Bodo Moeller]
11496 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
11497 ordering of SMIMECapabilities wasn't in "strength order" and there
11498 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
11502 *) Some ASN1 types with illegal zero length encoding (INTEGER,
11503 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
11504 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
11506 *) Merge in my S/MIME library for OpenSSL. This provides a simple
11507 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
11508 functionality to handle multipart/signed properly) and a utility
11509 called 'smime' to call all this stuff. This is based on code I
11510 originally wrote for Celo who have kindly allowed it to be
11511 included in OpenSSL.
11514 *) Add variants des_set_key_checked and des_set_key_unchecked of
11515 des_set_key (aka des_key_sched). Global variable des_check_key
11516 decides which of these is called by des_set_key; this way
11517 des_check_key behaves as it always did, but applications and
11518 the library itself, which was buggy for des_check_key == 1,
11519 have a cleaner way to pick the version they need.
11522 *) New function PKCS12_newpass() which changes the password of a
11526 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
11527 dynamic mix. In both cases the ids can be used as an index into the
11528 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
11529 functions so they accept a list of the field values and the
11530 application doesn't need to directly manipulate the X509_TRUST
11534 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
11538 *) Modify the way the V3 extension code looks up extensions. This now
11539 works in a similar way to the object code: we have some "standard"
11540 extensions in a static table which is searched with OBJ_bsearch()
11541 and the application can add dynamic ones if needed. The file
11542 crypto/x509v3/ext_dat.h now has the info: this file needs to be
11543 updated whenever a new extension is added to the core code and kept
11544 in ext_nid order. There is a simple program 'tabtest.c' which checks
11545 this. New extensions are not added too often so this file can readily
11546 be maintained manually.
11548 There are two big advantages in doing things this way. The extensions
11549 can be looked up immediately and no longer need to be "added" using
11550 X509V3_add_standard_extensions(): this function now does nothing.
11551 [Side note: I get *lots* of email saying the extension code doesn't
11552 work because people forget to call this function]
11553 Also no dynamic allocation is done unless new extensions are added:
11554 so if we don't add custom extensions there is no need to call
11555 X509V3_EXT_cleanup().
11558 *) Modify enc utility's salting as follows: make salting the default. Add a
11559 magic header, so unsalted files fail gracefully instead of just decrypting
11560 to garbage. This is because not salting is a big security hole, so people
11561 should be discouraged from doing it.
11564 *) Fixes and enhancements to the 'x509' utility. It allowed a message
11565 digest to be passed on the command line but it only used this
11566 parameter when signing a certificate. Modified so all relevant
11567 operations are affected by the digest parameter including the
11568 -fingerprint and -x509toreq options. Also -x509toreq choked if a
11569 DSA key was used because it didn't fix the digest.
11572 *) Initial certificate chain verify code. Currently tests the untrusted
11573 certificates for consistency with the verify purpose (which is set
11574 when the X509_STORE_CTX structure is set up) and checks the pathlength.
11576 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
11577 this is because it will reject chains with invalid extensions whereas
11578 every previous version of OpenSSL and SSLeay made no checks at all.
11580 Trust code: checks the root CA for the relevant trust settings. Trust
11581 settings have an initial value consistent with the verify purpose: e.g.
11582 if the verify purpose is for SSL client use it expects the CA to be
11583 trusted for SSL client use. However the default value can be changed to
11584 permit custom trust settings: one example of this would be to only trust
11585 certificates from a specific "secure" set of CAs.
11587 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
11588 which should be used for version portability: especially since the
11589 verify structure is likely to change more often now.
11591 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
11592 to set them. If not set then assume SSL clients will verify SSL servers
11595 Two new options to the verify program: -untrusted allows a set of
11596 untrusted certificates to be passed in and -purpose which sets the
11597 intended purpose of the certificate. If a purpose is set then the
11598 new chain verify code is used to check extension consistency.
11601 *) Support for the authority information access extension.
11604 *) Modify RSA and DSA PEM read routines to transparently handle
11605 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
11606 public keys in a format compatible with certificate
11607 SubjectPublicKeyInfo structures. Unfortunately there were already
11608 functions called *_PublicKey_* which used various odd formats so
11609 these are retained for compatibility: however the DSA variants were
11610 never in a public release so they have been deleted. Changed dsa/rsa
11611 utilities to handle the new format: note no releases ever handled public
11612 keys so we should be OK.
11614 The primary motivation for this change is to avoid the same fiasco
11615 that dogs private keys: there are several incompatible private key
11616 formats some of which are standard and some OpenSSL specific and
11617 require various evil hacks to allow partial transparent handling and
11618 even then it doesn't work with DER formats. Given the option anything
11619 other than PKCS#8 should be dumped: but the other formats have to
11620 stay in the name of compatibility.
11622 With public keys and the benefit of hindsight one standard format
11623 is used which works with EVP_PKEY, RSA or DSA structures: though
11624 it clearly returns an error if you try to read the wrong kind of key.
11626 Added a -pubkey option to the 'x509' utility to output the public key.
11627 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
11628 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
11629 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
11630 that do the same as the EVP_PKEY_assign_*() except they up the
11631 reference count of the added key (they don't "swallow" the
11635 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
11636 CRLs would fail if the file contained no certificates or no CRLs:
11637 added a new function to read in both types and return the number
11638 read: this means that if none are read it will be an error. The
11639 DER versions of the certificate and CRL reader would always fail
11640 because it isn't possible to mix certificates and CRLs in DER format
11641 without choking one or the other routine. Changed this to just read
11642 a certificate: this is the best we can do. Also modified the code
11643 in apps/verify.c to take notice of return codes: it was previously
11644 attempting to read in certificates from NULL pointers and ignoring
11645 any errors: this is one reason why the cert and CRL reader seemed
11646 to work. It doesn't check return codes from the default certificate
11647 routines: these may well fail if the certificates aren't installed.
11650 *) Code to support otherName option in GeneralName.
11653 *) First update to verify code. Change the verify utility
11654 so it warns if it is passed a self signed certificate:
11655 for consistency with the normal behaviour. X509_verify
11656 has been modified to it will now verify a self signed
11657 certificate if *exactly* the same certificate appears
11658 in the store: it was previously impossible to trust a
11659 single self signed certificate. This means that:
11660 openssl verify ss.pem
11661 now gives a warning about a self signed certificate but
11662 openssl verify -CAfile ss.pem ss.pem
11666 *) For servers, store verify_result in SSL_SESSION data structure
11667 (and add it to external session representation).
11668 This is needed when client certificate verifications fails,
11669 but an application-provided verification callback (set by
11670 SSL_CTX_set_cert_verify_callback) allows accepting the session
11671 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
11672 but returns 1): When the session is reused, we have to set
11673 ssl->verify_result to the appropriate error code to avoid
11675 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
11677 *) Fix a bug in the new PKCS#7 code: it didn't consider the
11678 case in PKCS7_dataInit() where the signed PKCS7 structure
11679 didn't contain any existing data because it was being created.
11680 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
11682 *) Add a salt to the key derivation routines in enc.c. This
11683 forms the first 8 bytes of the encrypted file. Also add a
11684 -S option to allow a salt to be input on the command line.
11687 *) New function X509_cmp(). Oddly enough there wasn't a function
11688 to compare two certificates. We do this by working out the SHA1
11689 hash and comparing that. X509_cmp() will be needed by the trust
11693 *) SSL_get1_session() is like SSL_get_session(), but increments
11694 the reference count in the SSL_SESSION returned.
11695 [Geoff Thorpe <geoff@eu.c2.net>]
11697 *) Fix for 'req': it was adding a null to request attributes.
11698 Also change the X509_LOOKUP and X509_INFO code to handle
11699 certificate auxiliary information.
11702 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
11706 *) Add the possibility to add extra information to the memory leak
11707 detecting output, to form tracebacks, showing from where each
11708 allocation was originated: CRYPTO_push_info("constant string") adds
11709 the string plus current file name and line number to a per-thread
11710 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
11711 is like calling CYRPTO_pop_info() until the stack is empty.
11712 Also updated memory leak detection code to be multi-thread-safe.
11715 *) Add options -text and -noout to pkcs7 utility and delete the
11716 encryption options which never did anything. Update docs.
11719 *) Add options to some of the utilities to allow the pass phrase
11720 to be included on either the command line (not recommended on
11721 OSes like Unix) or read from the environment. Update the
11722 manpages and fix a few bugs.
11725 *) Add a few manpages for some of the openssl commands.
11728 *) Fix the -revoke option in ca. It was freeing up memory twice,
11729 leaking and not finding already revoked certificates.
11732 *) Extensive changes to support certificate auxiliary information.
11733 This involves the use of X509_CERT_AUX structure and X509_AUX
11734 functions. An X509_AUX function such as PEM_read_X509_AUX()
11735 can still read in a certificate file in the usual way but it
11736 will also read in any additional "auxiliary information". By
11737 doing things this way a fair degree of compatibility can be
11738 retained: existing certificates can have this information added
11739 using the new 'x509' options.
11741 Current auxiliary information includes an "alias" and some trust
11742 settings. The trust settings will ultimately be used in enhanced
11743 certificate chain verification routines: currently a certificate
11744 can only be trusted if it is self signed and then it is trusted
11748 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
11749 The problem was that one of the replacement routines had not been working
11750 since SSLeay releases. For now the offending routine has been replaced
11751 with non-optimised assembler. Even so, this now gives around 95%
11752 performance improvement for 1024 bit RSA signs.
11755 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
11756 handling. Most clients have the effective key size in bits equal to
11757 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
11758 A few however don't do this and instead use the size of the decrypted key
11759 to determine the RC2 key length and the AlgorithmIdentifier to determine
11760 the effective key length. In this case the effective key length can still
11761 be 40 bits but the key length can be 168 bits for example. This is fixed
11762 by manually forcing an RC2 key into the EVP_PKEY structure because the
11763 EVP code can't currently handle unusual RC2 key sizes: it always assumes
11764 the key length and effective key length are equal.
11767 *) Add a bunch of functions that should simplify the creation of
11768 X509_NAME structures. Now you should be able to do:
11769 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
11770 and have it automatically work out the correct field type and fill in
11771 the structures. The more adventurous can try:
11772 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
11773 and it will (hopefully) work out the correct multibyte encoding.
11776 *) Change the 'req' utility to use the new field handling and multibyte
11777 copy routines. Before the DN field creation was handled in an ad hoc
11778 way in req, ca, and x509 which was rather broken and didn't support
11779 BMPStrings or UTF8Strings. Since some software doesn't implement
11780 BMPStrings or UTF8Strings yet, they can be enabled using the config file
11781 using the dirstring_type option. See the new comment in the default
11782 openssl.cnf for more info.
11785 *) Make crypto/rand/md_rand.c more robust:
11786 - Assure unique random numbers after fork().
11787 - Make sure that concurrent threads access the global counter and
11788 md serializably so that we never lose entropy in them
11789 or use exactly the same state in multiple threads.
11790 Access to the large state is not always serializable because
11791 the additional locking could be a performance killer, and
11792 md should be large enough anyway.
11795 *) New file apps/app_rand.c with commonly needed functionality
11796 for handling the random seed file.
11798 Use the random seed file in some applications that previously did not:
11800 dsaparam -genkey (which also ignored its '-rand' option),
11803 x509 (when signing).
11804 Except on systems with /dev/urandom, it is crucial to have a random
11805 seed file at least for key creation, DSA signing, and for DH exchanges;
11806 for RSA signatures we could do without one.
11808 gendh and gendsa (unlike genrsa) used to read only the first byte
11809 of each file listed in the '-rand' option. The function as previously
11810 found in genrsa is now in app_rand.c and is used by all programs
11811 that support '-rand'.
11814 *) In RAND_write_file, use mode 0600 for creating files;
11815 don't just chmod when it may be too late.
11818 *) Report an error from X509_STORE_load_locations
11819 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
11822 *) New function ASN1_mbstring_copy() this copies a string in either
11823 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
11824 into an ASN1_STRING type. A mask of permissible types is passed
11825 and it chooses the "minimal" type to use or an error if not type
11829 *) Add function equivalents to the various macros in asn1.h. The old
11830 macros are retained with an M_ prefix. Code inside the library can
11831 use the M_ macros. External code (including the openssl utility)
11832 should *NOT* in order to be "shared library friendly".
11835 *) Add various functions that can check a certificate's extensions
11836 to see if it usable for various purposes such as SSL client,
11837 server or S/MIME and CAs of these types. This is currently
11838 VERY EXPERIMENTAL but will ultimately be used for certificate chain
11839 verification. Also added a -purpose flag to x509 utility to
11840 print out all the purposes.
11843 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
11847 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
11848 for, obtain and decode and extension and obtain its critical flag.
11849 This allows all the necessary extension code to be handled in a
11850 single function call.
11853 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
11854 platforms. See crypto/rc4/rc4_enc.c for further details.
11857 *) New -noout option to asn1parse. This causes no output to be produced
11858 its main use is when combined with -strparse and -out to extract data
11859 from a file (which may not be in ASN.1 format).
11862 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
11863 when producing the local key id.
11864 [Richard Levitte <levitte@stacken.kth.se>]
11866 *) New option -dhparam in s_server. This allows a DH parameter file to be
11867 stated explicitly. If it is not stated then it tries the first server
11868 certificate file. The previous behaviour hard coded the filename
11872 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
11873 a public key to be input or output. For example:
11874 openssl rsa -in key.pem -pubout -out pubkey.pem
11875 Also added necessary DSA public key functions to handle this.
11878 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
11879 in the message. This was handled by allowing
11880 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
11881 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
11883 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
11884 to the end of the strings whereas this didn't. This would cause problems
11885 if strings read with d2i_ASN1_bytes() were later modified.
11886 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
11888 *) Fix for base64 decode bug. When a base64 bio reads only one line of
11889 data and it contains EOF it will end up returning an error. This is
11890 caused by input 46 bytes long. The cause is due to the way base64
11891 BIOs find the start of base64 encoded data. They do this by trying a
11892 trial decode on each line until they find one that works. When they
11893 do a flag is set and it starts again knowing it can pass all the
11894 data directly through the decoder. Unfortunately it doesn't reset
11895 the context it uses. This means that if EOF is reached an attempt
11896 is made to pass two EOFs through the context and this causes the
11897 resulting error. This can also cause other problems as well. As is
11898 usual with these problems it takes *ages* to find and the fix is
11899 trivial: move one line.
11900 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
11902 *) Ugly workaround to get s_client and s_server working under Windows. The
11903 old code wouldn't work because it needed to select() on sockets and the
11904 tty (for keypresses and to see if data could be written). Win32 only
11905 supports select() on sockets so we select() with a 1s timeout on the
11906 sockets and then see if any characters are waiting to be read, if none
11907 are present then we retry, we also assume we can always write data to
11908 the tty. This isn't nice because the code then blocks until we've
11909 received a complete line of data and it is effectively polling the
11910 keyboard at 1s intervals: however it's quite a bit better than not
11911 working at all :-) A dedicated Windows application might handle this
11912 with an event loop for example.
11915 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
11916 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
11917 will be called when RSA_sign() and RSA_verify() are used. This is useful
11918 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
11919 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
11920 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
11921 This necessitated the support of an extra signature type NID_md5_sha1
11922 for SSL signatures and modifications to the SSL library to use it instead
11923 of calling RSA_public_decrypt() and RSA_private_encrypt().
11926 *) Add new -verify -CAfile and -CApath options to the crl program, these
11927 will lookup a CRL issuers certificate and verify the signature in a
11928 similar way to the verify program. Tidy up the crl program so it
11929 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
11930 less strict. It will now permit CRL extensions even if it is not
11931 a V2 CRL: this will allow it to tolerate some broken CRLs.
11934 *) Initialize all non-automatic variables each time one of the openssl
11935 sub-programs is started (this is necessary as they may be started
11936 multiple times from the "OpenSSL>" prompt).
11937 [Lennart Bang, Bodo Moeller]
11939 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
11940 removing all other RSA functionality (this is what NO_RSA does). This
11941 is so (for example) those in the US can disable those operations covered
11942 by the RSA patent while allowing storage and parsing of RSA keys and RSA
11946 *) Non-copying interface to BIO pairs.
11947 (still largely untested)
11950 *) New function ASN1_tag2str() to convert an ASN1 tag to a descriptive
11951 ASCII string. This was handled independently in various places before.
11954 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
11955 UTF8 strings a character at a time.
11958 *) Use client_version from client hello to select the protocol
11959 (s23_srvr.c) and for RSA client key exchange verification
11960 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
11963 *) Add various utility functions to handle SPKACs, these were previously
11964 handled by poking round in the structure internals. Added new function
11965 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
11966 print, verify and generate SPKACs. Based on an original idea from
11967 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
11970 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
11973 *) Allow the config file extension section to be overwritten on the
11974 command line. Based on an original idea from Massimiliano Pala
11975 <madwolf@comune.modena.it>. The new option is called -extensions
11976 and can be applied to ca, req and x509. Also -reqexts to override
11977 the request extensions in req and -crlexts to override the crl extensions
11981 *) Add new feature to the SPKAC handling in ca. Now you can include
11982 the same field multiple times by preceding it by "XXXX." for example:
11985 this is the same syntax as used in the req config file.
11988 *) Allow certificate extensions to be added to certificate requests. These
11989 are specified in a 'req_extensions' option of the req section of the
11990 config file. They can be printed out with the -text option to req but
11991 are otherwise ignored at present.
11994 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
11995 data read consists of only the final block it would not decrypted because
11996 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
11997 A misplaced 'break' also meant the decrypted final block might not be
11998 copied until the next read.
12001 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
12002 a few extra parameters to the DH structure: these will be useful if
12003 for example we want the value of 'q' or implement X9.42 DH.
12006 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
12007 provides hooks that allow the default DSA functions or functions on a
12008 "per key" basis to be replaced. This allows hardware acceleration and
12009 hardware key storage to be handled without major modification to the
12010 library. Also added low level modexp hooks and CRYPTO_EX structure and
12011 associated functions.
12014 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
12015 as "read only": it can't be written to and the buffer it points to will
12016 not be freed. Reading from a read only BIO is much more efficient than
12017 a normal memory BIO. This was added because there are several times when
12018 an area of memory needs to be read from a BIO. The previous method was
12019 to create a memory BIO and write the data to it, this results in two
12020 copies of the data and an O(n^2) reading algorithm. There is a new
12021 function BIO_new_mem_buf() which creates a read only memory BIO from
12022 an area of memory. Also modified the PKCS#7 routines to use read only
12026 *) Bugfix: ssl23_get_client_hello did not work properly when called in
12027 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
12028 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
12029 but a retry condition occurred while trying to read the rest.
12032 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
12033 NID_pkcs7_encrypted by default: this was wrong since this should almost
12034 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
12035 the encrypted data type: this is a more sensible place to put it and it
12036 allows the PKCS#12 code to be tidied up that duplicated this
12040 *) Changed obj_dat.pl script so it takes its input and output files on
12041 the command line. This should avoid shell escape redirection problems
12045 *) Initial support for certificate extension requests, these are included
12046 in things like Xenroll certificate requests. Included functions to allow
12047 extensions to be obtained and added.
12050 *) -crlf option to s_client and s_server for sending newlines as
12051 CRLF (as required by many protocols).
12054 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
12056 *) Install libRSAglue.a when OpenSSL is built with RSAref.
12057 [Ralf S. Engelschall]
12059 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
12060 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
12062 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
12066 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
12067 DH parameters/keys (q is lost during that conversion, but the resulting
12068 DH parameters contain its length).
12070 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
12071 much faster than DH_generate_parameters (which creates parameters
12072 where p = 2*q + 1), and also the smaller q makes DH computations
12073 much more efficient (160-bit exponentiation instead of 1024-bit
12074 exponentiation); so this provides a convenient way to support DHE
12075 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
12076 utter importance to use
12077 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
12079 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
12080 when such DH parameters are used, because otherwise small subgroup
12081 attacks may become possible!
12084 *) Avoid memory leak in i2d_DHparams.
12087 *) Allow the -k option to be used more than once in the enc program:
12088 this allows the same encrypted message to be read by multiple recipients.
12091 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
12092 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
12093 it will always use the numerical form of the OID, even if it has a short
12097 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
12098 method only got called if p,q,dmp1,dmq1,iqmp components were present,
12099 otherwise bn_mod_exp was called. In the case of hardware keys for example
12100 no private key components need be present and it might store extra data
12101 in the RSA structure, which cannot be accessed from bn_mod_exp.
12102 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
12103 private key operations.
12106 *) Added support for SPARC Linux.
12109 *) pem_password_cb function type incompatibly changed from
12110 typedef int pem_password_cb(char *buf, int size, int rwflag);
12112 ....(char *buf, int size, int rwflag, void *userdata);
12113 so that applications can pass data to their callbacks:
12114 The PEM[_ASN1]_{read,write}... functions and macros now take an
12115 additional void * argument, which is just handed through whenever
12116 the password callback is called.
12117 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
12119 New function SSL_CTX_set_default_passwd_cb_userdata.
12121 Compatibility note: As many C implementations push function arguments
12122 onto the stack in reverse order, the new library version is likely to
12123 interoperate with programs that have been compiled with the old
12124 pem_password_cb definition (PEM_whatever takes some data that
12125 happens to be on the stack as its last argument, and the callback
12126 just ignores this garbage); but there is no guarantee whatsoever that
12129 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
12130 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
12131 problems not only on Windows, but also on some Unix platforms.
12132 To avoid problematic command lines, these definitions are now in an
12133 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
12134 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
12137 *) MIPS III/IV assembler module is reimplemented.
12140 *) More DES library cleanups: remove references to srand/rand and
12141 delete an unused file.
12144 *) Add support for the free Netwide assembler (NASM) under Win32,
12145 since not many people have MASM (ml) and it can be hard to obtain.
12146 This is currently experimental but it seems to work OK and pass all
12147 the tests. Check out INSTALL.W32 for info.
12150 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
12151 without temporary keys kept an extra copy of the server key,
12152 and connections with temporary keys did not free everything in case
12156 *) New function RSA_check_key and new openssl rsa option -check
12157 for verifying the consistency of RSA keys.
12158 [Ulf Moeller, Bodo Moeller]
12160 *) Various changes to make Win32 compile work:
12161 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
12162 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
12163 comparison" warnings.
12164 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
12167 *) Add a debugging option to PKCS#5 v2 key generation function: when
12168 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
12169 derived keys are printed to stderr.
12172 *) Copy the flags in ASN1_STRING_dup().
12173 [Roman E. Pavlov <pre@mo.msk.ru>]
12175 *) The x509 application mishandled signing requests containing DSA
12176 keys when the signing key was also DSA and the parameters didn't match.
12178 It was supposed to omit the parameters when they matched the signing key:
12179 the verifying software was then supposed to automatically use the CA's
12180 parameters if they were absent from the end user certificate.
12182 Omitting parameters is no longer recommended. The test was also
12183 the wrong way round! This was probably due to unusual behaviour in
12184 EVP_cmp_parameters() which returns 1 if the parameters match.
12185 This meant that parameters were omitted when they *didn't* match and
12186 the certificate was useless. Certificates signed with 'ca' didn't have
12188 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
12190 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
12191 The interface is as follows:
12192 Applications can use
12193 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
12194 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
12195 "off" is now the default.
12196 The library internally uses
12197 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
12198 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
12199 to disable memory-checking temporarily.
12201 Some inconsistent states that previously were possible (and were
12202 even the default) are now avoided.
12204 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
12205 with each memory chunk allocated; this is occasionally more helpful
12206 than just having a counter.
12208 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
12210 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
12214 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
12215 which largely parallels "options", but is for changing API behaviour,
12216 whereas "options" are about protocol behaviour.
12217 Initial "mode" flags are:
12219 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
12220 a single record has been written.
12221 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
12222 retries use the same buffer location.
12223 (But all of the contents must be
12227 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
12230 *) Fix problems with no-hmac etc.
12231 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
12233 *) New functions RSA_get_default_method(), RSA_set_method() and
12234 RSA_get_method(). These allows replacement of RSA_METHODs without having
12235 to mess around with the internals of an RSA structure.
12238 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
12239 Also really enable memory leak checks in openssl.c and in some
12241 [Chad C. Mulligan, Bodo Moeller]
12243 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
12244 up the length of negative integers. This has now been simplified to just
12245 store the length when it is first determined and use it later, rather
12246 than trying to keep track of where data is copied and updating it to
12248 [Steve Henson, reported by Brien Wheeler
12249 <bwheeler@authentica-security.com>]
12251 *) Add a new function PKCS7_signatureVerify. This allows the verification
12252 of a PKCS#7 signature but with the signing certificate passed to the
12253 function itself. This contrasts with PKCS7_dataVerify which assumes the
12254 certificate is present in the PKCS#7 structure. This isn't always the
12255 case: certificates can be omitted from a PKCS#7 structure and be
12256 distributed by "out of band" means (such as a certificate database).
12259 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
12260 function prototypes in pem.h, also change util/mkdef.pl to add the
12261 necessary function names.
12264 *) mk1mf.pl (used by Windows builds) did not properly read the
12265 options set by Configure in the top level Makefile, and Configure
12266 was not even able to write more than one option correctly.
12267 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
12270 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
12271 file to be loaded from a BIO or FILE pointer. The BIO version will
12272 for example allow memory BIOs to contain config info.
12275 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
12276 Whoever hopes to achieve shared-library compatibility across versions
12277 must use this, not the compile-time macro.
12278 (Exercise 0.9.4: Which is the minimum library version required by
12280 Note: All this applies only to multi-threaded programs, others don't
12284 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
12285 through a BIO pair triggered the default case, i.e.
12286 SSLerr(...,SSL_R_UNKNOWN_STATE).
12289 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
12290 can use the SSL library even if none of the specific BIOs is
12294 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
12295 for the encoded length.
12296 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
12298 *) Add initial documentation of the X509V3 functions.
12301 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
12302 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
12303 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
12304 secure PKCS#8 private key format with a high iteration count.
12307 *) Fix determination of Perl interpreter: A perl or perl5
12308 _directory_ in $PATH was also accepted as the interpreter.
12309 [Ralf S. Engelschall]
12311 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
12312 wrong with it but it was very old and did things like calling
12313 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
12314 unusual formatting.
12317 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
12318 to use the new extension code.
12321 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
12322 with macros. This should make it easier to change their form, add extra
12323 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
12327 *) Add to configuration table a new entry that can specify an alternative
12328 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
12329 according to Mark Crispin <MRC@Panda.COM>.
12333 *) DES CBC did not update the IV. Weird.
12336 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
12337 Changing the behaviour of the former might break existing programs --
12338 where IV updating is needed, des_ncbc_encrypt can be used.
12341 *) When bntest is run from "make test" it drives bc to check its
12342 calculations, as well as internally checking them. If an internal check
12343 fails, it needs to cause bc to give a non-zero result or make test carries
12344 on without noticing the failure. Fixed.
12347 *) DES library cleanups.
12350 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
12351 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
12352 ciphers. NOTE: although the key derivation function has been verified
12353 against some published test vectors it has not been extensively tested
12354 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
12358 *) Instead of "mkdir -p", which is not fully portable, use new
12359 Perl script "util/mkdir-p.pl".
12362 *) Rewrite the way password based encryption (PBE) is handled. It used to
12363 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
12364 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
12365 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
12366 the 'parameter' field of the AlgorithmIdentifier is passed to the
12367 underlying key generation function so it must do its own ASN1 parsing.
12368 This has also changed the EVP_PBE_CipherInit() function which now has a
12369 'parameter' argument instead of literal salt and iteration count values
12370 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
12373 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
12374 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
12375 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
12376 KEY" because this clashed with PKCS#8 unencrypted string. Since this
12377 value was just used as a "magic string" and not used directly its
12378 value doesn't matter.
12381 *) Introduce some semblance of const correctness to BN. Shame C doesn't
12385 *) "linux-sparc64" configuration (ultrapenguin).
12386 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
12387 "linux-sparc" configuration.
12388 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
12390 *) config now generates no-xxx options for missing ciphers.
12393 *) Support the EBCDIC character set (work in progress).
12394 File ebcdic.c not yet included because it has a different license.
12395 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12397 *) Support BS2000/OSD-POSIX.
12398 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12400 *) Make callbacks for key generation use void * instead of char *.
12403 *) Make S/MIME samples compile (not yet tested).
12406 *) Additional typesafe stacks.
12409 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
12413 Changes between 0.9.3 and 0.9.3a [29 May 1999]
12415 *) New configuration variant "sco5-gcc".
12417 *) Updated some demos.
12418 [Sean O Riordain, Wade Scholine]
12420 *) Add missing BIO_free at exit of pkcs12 application.
12423 *) Fix memory leak in conf.c.
12426 *) Updates for Win32 to assembler version of MD5.
12429 *) Set #! path to perl in apps/der_chop to where we found it
12430 instead of using a fixed path.
12433 *) SHA library changes for irix64-mips4-cc.
12436 *) Improvements for VMS support.
12440 Changes between 0.9.2b and 0.9.3 [24 May 1999]
12442 *) Bignum library bug fix. IRIX 6 passes "make test" now!
12443 This also avoids the problems with SC4.2 and unpatched SC5.
12444 [Andy Polyakov <appro@fy.chalmers.se>]
12446 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
12447 These are required because of the typesafe stack would otherwise break
12448 existing code. If old code used a structure member which used to be STACK
12449 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
12450 sk_num or sk_value it would produce an error because the num, data members
12451 are not present in STACK_OF. Now it just produces a warning. sk_set
12452 replaces the old method of assigning a value to sk_value
12453 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
12454 that does this will no longer work (and should use sk_set instead) but
12455 this could be regarded as a "questionable" behaviour anyway.
12458 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
12459 correctly handle encrypted S/MIME data.
12462 *) Change type of various DES function arguments from des_cblock
12463 (which means, in function argument declarations, pointer to char)
12464 to des_cblock * (meaning pointer to array with 8 char elements),
12465 which allows the compiler to do more typechecking; it was like
12466 that back in SSLeay, but with lots of ugly casts.
12468 Introduce new type const_des_cblock.
12471 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
12472 problems: find RecipientInfo structure that matches recipient certificate
12473 and initialise the ASN1 structures properly based on passed cipher.
12476 *) Belatedly make the BN tests actually check the results.
12479 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
12480 to and from BNs: it was completely broken. New compilation option
12481 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
12482 key elements as negative integers.
12485 *) Reorganize and speed up MD5.
12486 [Andy Polyakov <appro@fy.chalmers.se>]
12489 [Richard Levitte <richard@levitte.org>]
12491 *) New option -out to asn1parse to allow the parsed structure to be
12492 output to a file. This is most useful when combined with the -strparse
12493 option to examine the output of things like OCTET STRINGS.
12496 *) Make SSL library a little more fool-proof by not requiring any longer
12497 that SSL_set_{accept,connect}_state be called before
12498 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
12499 in many applications because usually everything *appeared* to work as
12500 intended anyway -- now it really works as intended).
12503 *) Move openssl.cnf out of lib/.
12506 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
12507 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
12508 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
12509 [Ralf S. Engelschall]
12511 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
12512 handle PKCS#7 enveloped data properly.
12513 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
12515 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
12516 copying pointers. The cert_st handling is changed by this in
12517 various ways (and thus what used to be known as ctx->default_cert
12518 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
12519 any longer when s->cert does not give us what we need).
12520 ssl_cert_instantiate becomes obsolete by this change.
12521 As soon as we've got the new code right (possibly it already is?),
12522 we have solved a couple of bugs of the earlier code where s->cert
12523 was used as if it could not have been shared with other SSL structures.
12525 Note that using the SSL API in certain dirty ways now will result
12526 in different behaviour than observed with earlier library versions:
12527 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
12528 does not influence s as it used to.
12530 In order to clean up things more thoroughly, inside SSL_SESSION
12531 we don't use CERT any longer, but a new structure SESS_CERT
12532 that holds per-session data (if available); currently, this is
12533 the peer's certificate chain and, for clients, the server's certificate
12534 and temporary key. CERT holds only those values that can have
12535 meaningful defaults in an SSL_CTX.
12538 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
12539 from the internal representation. Various PKCS#7 fixes: remove some
12540 evil casts and set the enc_dig_alg field properly based on the signing
12544 *) Allow PKCS#12 password to be set from the command line or the
12545 environment. Let 'ca' get its config file name from the environment
12546 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
12550 *) Allow certificate policies extension to use an IA5STRING for the
12551 organization field. This is contrary to the PKIX definition but
12552 VeriSign uses it and IE5 only recognises this form. Document 'x509'
12556 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
12557 without disallowing inline assembler and the like for non-pedantic builds.
12560 *) Support Borland C++ builder.
12561 [Janez Jere <jj@void.si>, modified by Ulf Möller]
12563 *) Support Mingw32.
12566 *) SHA-1 cleanups and performance enhancements.
12567 [Andy Polyakov <appro@fy.chalmers.se>]
12569 *) Sparc v8plus assembler for the bignum library.
12570 [Andy Polyakov <appro@fy.chalmers.se>]
12572 *) Accept any -xxx and +xxx compiler options in Configure.
12575 *) Update HPUX configuration.
12578 *) Add missing sk_<type>_unshift() function to safestack.h
12579 [Ralf S. Engelschall]
12581 *) New function SSL_CTX_use_certificate_chain_file that sets the
12582 "extra_cert"s in addition to the certificate. (This makes sense
12583 only for "PEM" format files, as chains as a whole are not
12587 *) Support verify_depth from the SSL API.
12588 x509_vfy.c had what can be considered an off-by-one-error:
12589 Its depth (which was not part of the external interface)
12590 was actually counting the number of certificates in a chain;
12591 now it really counts the depth.
12594 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
12595 instead of X509err, which often resulted in confusing error
12596 messages since the error codes are not globally unique
12597 (e.g. an alleged error in ssl3_accept when a certificate
12598 didn't match the private key).
12600 *) New function SSL_CTX_set_session_id_context that allows to set a default
12601 value (so that you don't need SSL_set_session_id_context for each
12602 connection using the SSL_CTX).
12605 *) OAEP decoding bug fix.
12608 *) Support INSTALL_PREFIX for package builders, as proposed by
12612 *) New Configure options "threads" and "no-threads". For systems
12613 where the proper compiler options are known (currently Solaris
12614 and Linux), "threads" is the default.
12617 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
12620 *) Install various scripts to $(OPENSSLDIR)/misc, not to
12621 $(INSTALLTOP)/bin -- they shouldn't clutter directories
12622 such as /usr/local/bin.
12625 *) "make linux-shared" to build shared libraries.
12626 [Niels Poppe <niels@netbox.org>]
12628 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
12631 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
12632 extension adding in x509 utility.
12635 *) Remove NOPROTO sections and error code comments.
12638 *) Partial rewrite of the DEF file generator to now parse the ANSI
12642 *) New Configure options --prefix=DIR and --openssldir=DIR.
12645 *) Complete rewrite of the error code script(s). It is all now handled
12646 by one script at the top level which handles error code gathering,
12647 header rewriting and C source file generation. It should be much better
12648 than the old method: it now uses a modified version of Ulf's parser to
12649 read the ANSI prototypes in all header files (thus the old K&R definitions
12650 aren't needed for error creation any more) and do a better job of
12651 translating function codes into names. The old 'ASN1 error code imbedded
12652 in a comment' is no longer necessary and it doesn't use .err files which
12653 have now been deleted. Also the error code call doesn't have to appear all
12654 on one line (which resulted in some large lines...).
12657 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
12660 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
12661 0 (which usually indicates a closed connection), but continue reading.
12664 *) Fix some race conditions.
12667 *) Add support for CRL distribution points extension. Add Certificate
12668 Policies and CRL distribution points documentation.
12671 *) Move the autogenerated header file parts to crypto/opensslconf.h.
12674 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
12675 8 of keying material. Merlin has also confirmed interop with this fix
12676 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
12677 [Merlin Hughes <merlin@baltimore.ie>]
12679 *) Fix lots of warnings.
12680 [Richard Levitte <levitte@stacken.kth.se>]
12682 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
12683 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
12684 [Richard Levitte <levitte@stacken.kth.se>]
12686 *) Fix problems with sizeof(long) == 8.
12687 [Andy Polyakov <appro@fy.chalmers.se>]
12689 *) Change functions to ANSI C.
12692 *) Fix typos in error codes.
12693 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
12695 *) Remove defunct assembler files from Configure.
12698 *) SPARC v8 assembler BIGNUM implementation.
12699 [Andy Polyakov <appro@fy.chalmers.se>]
12701 *) Support for Certificate Policies extension: both print and set.
12702 Various additions to support the r2i method this uses.
12705 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
12706 return a const string when you are expecting an allocated buffer.
12709 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
12710 types DirectoryString and DisplayText.
12713 *) Add code to allow r2i extensions to access the configuration database,
12714 add an LHASH database driver and add several ctx helper functions.
12717 *) Fix an evil bug in bn_expand2() which caused various BN functions to
12718 fail when they extended the size of a BIGNUM.
12721 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
12722 support typesafe stack.
12725 *) Fix typo in SSL_[gs]et_options().
12726 [Nils Frostberg <nils@medcom.se>]
12728 *) Delete various functions and files that belonged to the (now obsolete)
12729 old X509V3 handling code.
12732 *) New Configure option "rsaref".
12735 *) Don't auto-generate pem.h.
12738 *) Introduce type-safe ASN.1 SETs.
12741 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
12742 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
12744 *) Introduce type-safe STACKs. This will almost certainly break lots of code
12745 that links with OpenSSL (well at least cause lots of warnings), but fear
12746 not: the conversion is trivial, and it eliminates loads of evil casts. A
12747 few STACKed things have been converted already. Feel free to convert more.
12748 In the fullness of time, I'll do away with the STACK type altogether.
12751 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
12752 specified in <certfile> by updating the entry in the index.txt file.
12753 This way one no longer has to edit the index.txt file manually for
12754 revoking a certificate. The -revoke option does the gory details now.
12755 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
12757 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
12758 `-text' option at all and this way the `-noout -text' combination was
12759 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
12760 [Ralf S. Engelschall]
12762 *) Make sure a corresponding plain text error message exists for the
12763 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
12764 verify callback function determined that a certificate was revoked.
12765 [Ralf S. Engelschall]
12767 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
12768 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
12769 all available ciphers including rc5, which was forgotten until now.
12770 In order to let the testing shell script know which algorithms
12771 are available, a new (up to now undocumented) command
12772 "openssl list-cipher-commands" is used.
12775 *) Bugfix: s_client occasionally would sleep in select() when
12776 it should have checked SSL_pending() first.
12779 *) New functions DSA_do_sign and DSA_do_verify to provide access to
12780 the raw DSA values prior to ASN.1 encoding.
12783 *) Tweaks to Configure
12784 [Niels Poppe <niels@netbox.org>]
12786 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
12790 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
12793 *) New config option to avoid instructions that are illegal on the 80386.
12794 The default code is faster, but requires at least a 486.
12797 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
12798 SSL2_SERVER_VERSION (not used at all) macros, which are now the
12799 same as SSL2_VERSION anyway.
12802 *) New "-showcerts" option for s_client.
12805 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
12806 application. Various cleanups and fixes.
12809 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
12810 modify error routines to work internally. Add error codes and PBE init
12811 to library startup routines.
12814 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
12815 packing functions to asn1 and evp. Changed function names and error
12816 codes along the way.
12819 *) PKCS12 integration: and so it begins... First of several patches to
12820 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
12821 objects to objects.h
12824 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
12825 and display support for Thawte strong extranet extension.
12828 *) Add LinuxPPC support.
12829 [Jeff Dubrule <igor@pobox.org>]
12831 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
12832 bn_div_words in alpha.s.
12833 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
12835 *) Make sure the RSA OAEP test is skipped under -DRSAref because
12836 OAEP isn't supported when OpenSSL is built with RSAref.
12837 [Ulf Moeller <ulf@fitug.de>]
12839 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
12840 so they no longer are missing under -DNOPROTO.
12841 [Soren S. Jorvang <soren@t.dk>]
12844 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
12846 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
12847 doesn't work when the session is reused. Coming soon!
12850 *) Fix a security hole, that allows sessions to be reused in the wrong
12851 context thus bypassing client cert protection! All software that uses
12852 client certs and session caches in multiple contexts NEEDS PATCHING to
12853 allow session reuse! A fuller solution is in the works.
12854 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
12856 *) Some more source tree cleanups (removed obsolete files
12857 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
12858 permission on "config" script to be executable) and a fix for the INSTALL
12860 [Ulf Moeller <ulf@fitug.de>]
12862 *) Remove some legacy and erroneous uses of malloc, free instead of
12864 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
12866 *) Make rsa_oaep_test return non-zero on error.
12867 [Ulf Moeller <ulf@fitug.de>]
12869 *) Add support for native Solaris shared libraries. Configure
12870 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
12871 if someone would make that last step automatic.
12872 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
12874 *) ctx_size was not built with the right compiler during "make links". Fixed.
12877 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
12878 except NULL ciphers". This means the default cipher list will no longer
12879 enable NULL ciphers. They need to be specifically enabled e.g. with
12880 the string "DEFAULT:eNULL".
12883 *) Fix to RSA private encryption routines: if p < q then it would
12884 occasionally produce an invalid result. This will only happen with
12885 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
12888 *) Be less restrictive and allow also `perl util/perlpath.pl
12889 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
12890 because this way one can also use an interpreter named `perl5' (which is
12891 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
12892 installed as `perl').
12893 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12895 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
12896 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12898 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
12899 advapi32.lib to Win32 build and change the pem test comparison
12900 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
12901 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
12902 and crypto/des/ede_cbcm_enc.c.
12905 *) DES quad checksum was broken on big-endian architectures. Fixed.
12908 *) Comment out two functions in bio.h that aren't implemented. Fix up the
12909 Win32 test batch file so it (might) work again. The Win32 test batch file
12910 is horrible: I feel ill....
12913 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
12914 in e_os.h. Audit of header files to check ANSI and non ANSI
12915 sections: 10 functions were absent from non ANSI section and not exported
12916 from Windows DLLs. Fixed up libeay.num for new functions.
12919 *) Make `openssl version' output lines consistent.
12920 [Ralf S. Engelschall]
12922 *) Fix Win32 symbol export lists for BIO functions: Added
12923 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
12924 to ms/libeay{16,32}.def.
12925 [Ralf S. Engelschall]
12927 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
12928 fine under Unix and passes some trivial tests I've now added. But the
12929 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
12930 added to make sure no one expects that this stuff really works in the
12931 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
12932 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
12934 [Ralf S. Engelschall]
12936 *) Fix the generation of two part addresses in perl.
12937 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
12939 *) Add config entry for Linux on MIPS.
12940 [John Tobey <jtobey@channel1.com>]
12942 *) Make links whenever Configure is run, unless we are on Windoze.
12945 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
12946 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
12950 *) Add a useful kludge to allow package maintainers to specify compiler and
12951 other platforms details on the command line without having to patch the
12952 Configure script everytime: One now can use ``perl Configure
12953 <id>:<details>'', i.e. platform ids are allowed to have details appended
12954 to them (separated by colons). This is treated as there would be a static
12955 pre-configured entry in Configure's %table under key <id> with value
12956 <details> and ``perl Configure <id>'' is called. So, when you want to
12957 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
12958 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
12959 now, which overrides the FreeBSD-elf entry on-the-fly.
12960 [Ralf S. Engelschall]
12962 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
12965 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
12966 on the `perl Configure ...' command line. This way one can compile
12967 OpenSSL libraries with Position Independent Code (PIC) which is needed
12968 for linking it into DSOs.
12969 [Ralf S. Engelschall]
12971 *) Remarkably, export ciphers were totally broken and no-one had noticed!
12975 *) Cleaned up the LICENSE document: The official contact for any license
12976 questions now is the OpenSSL core team under openssl-core@openssl.org.
12977 And add a paragraph about the dual-license situation to make sure people
12978 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
12979 to the OpenSSL toolkit.
12980 [Ralf S. Engelschall]
12982 *) General source tree makefile cleanups: Made `making xxx in yyy...'
12983 display consistent in the source tree and replaced `/bin/rm' by `rm'.
12984 Additionally cleaned up the `make links' target: Remove unnecessary
12985 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
12986 to speed processing and no longer clutter the display with confusing
12987 stuff. Instead only the actually done links are displayed.
12988 [Ralf S. Engelschall]
12990 *) Permit null encryption ciphersuites, used for authentication only. It used
12991 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
12992 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
12996 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
12997 signed attributes when verifying signatures (this would break them),
12998 the detached data encoding was wrong and public keys obtained using
12999 X509_get_pubkey() weren't freed.
13002 *) Add text documentation for the BUFFER functions. Also added a work around
13003 to a Win95 console bug. This was triggered by the password read stuff: the
13004 last character typed gets carried over to the next fread(). If you were
13005 generating a new cert request using 'req' for example then the last
13006 character of the passphrase would be CR which would then enter the first
13010 *) Added the new `Includes OpenSSL Cryptography Software' button as
13011 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
13012 button and can be used by applications based on OpenSSL to show the
13013 relationship to the OpenSSL project.
13014 [Ralf S. Engelschall]
13016 *) Remove confusing variables in function signatures in files
13017 ssl/ssl_lib.c and ssl/ssl.h.
13018 [Lennart Bong <lob@kulthea.stacken.kth.se>]
13020 *) Don't install bss_file.c under PREFIX/include/
13021 [Lennart Bong <lob@kulthea.stacken.kth.se>]
13023 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
13024 functions that return function pointers and has support for NT specific
13025 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
13026 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
13027 unsigned to signed types: this was killing the Win32 compile.
13030 *) Add new certificate file to stack functions,
13031 SSL_add_dir_cert_subjects_to_stack() and
13032 SSL_add_file_cert_subjects_to_stack(). These largely supplant
13033 SSL_load_client_CA_file(), and can be used to add multiple certs easily
13034 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
13035 This means that Apache-SSL and similar packages don't have to mess around
13036 to add as many CAs as they want to the preferred list.
13039 *) Experiment with doxygen documentation. Currently only partially applied to
13041 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
13042 openssl.doxy as the configuration file.
13045 *) Get rid of remaining C++-style comments which strict C compilers hate.
13046 [Ralf S. Engelschall, pointed out by Carlos Amengual]
13048 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
13049 compiled in by default: it has problems with large keys.
13052 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
13053 DH private keys and/or callback functions which directly correspond to
13054 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
13055 is needed for applications which have to configure certificates on a
13056 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
13058 For the RSA certificate situation is makes no difference, but
13059 for the DSA certificate situation this fixes the "no shared cipher"
13060 problem where the OpenSSL cipher selection procedure failed because the
13061 temporary keys were not overtaken from the context and the API provided
13062 no way to reconfigure them.
13063 The new functions now let applications reconfigure the stuff and they
13064 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
13065 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
13066 non-public-API function ssl_cert_instantiate() is used as a helper
13067 function and also to reduce code redundancy inside ssl_rsa.c.
13068 [Ralf S. Engelschall]
13070 *) Move s_server -dcert and -dkey options out of the undocumented feature
13071 area because they are useful for the DSA situation and should be
13072 recognized by the users.
13073 [Ralf S. Engelschall]
13075 *) Fix the cipher decision scheme for export ciphers: the export bits are
13076 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
13077 SSL_EXP_MASK. So, the original variable has to be used instead of the
13078 already masked variable.
13079 [Richard Levitte <levitte@stacken.kth.se>]
13081 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
13082 [Richard Levitte <levitte@stacken.kth.se>]
13084 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
13085 from `int' to `unsigned int' because it's a length and initialized by
13086 EVP_DigestFinal() which expects an `unsigned int *'.
13087 [Richard Levitte <levitte@stacken.kth.se>]
13089 *) Don't hard-code path to Perl interpreter on shebang line of Configure
13090 script. Instead use the usual Shell->Perl transition trick.
13091 [Ralf S. Engelschall]
13093 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
13094 (in addition to RSA certificates) to match the behaviour of `openssl dsa
13095 -noout -modulus' as it's already the case for `openssl rsa -noout
13096 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
13097 currently the public key is printed (a decision which was already done by
13098 `openssl dsa -modulus' in the past) which serves a similar purpose.
13099 Additionally the NO_RSA no longer completely removes the whole -modulus
13100 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
13102 [Ralf S. Engelschall]
13104 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
13105 BIO. See the source (crypto/evp/bio_ok.c) for more info.
13106 [Arne Ansper <arne@ats.cyber.ee>]
13108 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
13109 to be added. Now both 'req' and 'ca' can use new objects defined in the
13113 *) Add cool BIO that does syslog (or event log on NT).
13114 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
13116 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
13117 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
13118 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
13119 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
13122 *) Add preliminary config info for new extension code.
13125 *) Make RSA_NO_PADDING really use no padding.
13126 [Ulf Moeller <ulf@fitug.de>]
13128 *) Generate errors when private/public key check is done.
13131 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
13132 for some CRL extensions and new objects added.
13135 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
13136 key usage extension and fuller support for authority key id.
13139 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
13140 padding method for RSA, which is recommended for new applications in PKCS
13141 #1 v2.0 (RFC 2437, October 1998).
13142 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
13143 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
13144 against Bleichbacher's attack on RSA.
13145 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
13148 *) Updates to the new SSL compression code
13149 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13151 *) Fix so that the version number in the master secret, when passed
13152 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
13153 (because the server will not accept higher), that the version number
13154 is 0x03,0x01, not 0x03,0x00
13155 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13157 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
13158 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
13159 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
13162 *) Support for RAW extensions where an arbitrary extension can be
13163 created by including its DER encoding. See apps/openssl.cnf for
13167 *) Make sure latest Perl versions don't interpret some generated C array
13168 code as Perl array code in the crypto/err/err_genc.pl script.
13169 [Lars Weber <3weber@informatik.uni-hamburg.de>]
13171 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
13172 not many people have the assembler. Various Win32 compilation fixes and
13173 update to the INSTALL.W32 file with (hopefully) more accurate Win32
13174 build instructions.
13177 *) Modify configure script 'Configure' to automatically create crypto/date.h
13178 file under Win32 and also build pem.h from pem.org. New script
13179 util/mkfiles.pl to create the MINFO file on environments that can't do a
13180 'make files': perl util/mkfiles.pl >MINFO should work.
13183 *) Major rework of DES function declarations, in the pursuit of correctness
13184 and purity. As a result, many evil casts evaporated, and some weirdness,
13185 too. You may find this causes warnings in your code. Zapping your evil
13186 casts will probably fix them. Mostly.
13189 *) Fix for a typo in asn1.h. Bug fix to object creation script
13190 obj_dat.pl. It considered a zero in an object definition to mean
13191 "end of object": none of the objects in objects.h have any zeros
13192 so it wasn't spotted.
13193 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
13195 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
13196 Masking (CBCM). In the absence of test vectors, the best I have been able
13197 to do is check that the decrypt undoes the encrypt, so far. Send me test
13198 vectors if you have them.
13201 *) Correct calculation of key length for export ciphers (too much space was
13202 allocated for null ciphers). This has not been tested!
13205 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
13206 message is now correct (it understands "crypto" and "ssl" on its
13207 command line). There is also now an "update" option. This will update
13208 the util/ssleay.num and util/libeay.num files with any new functions.
13210 perl util/mkdef.pl crypto ssl update
13211 it will update them.
13214 *) Overhauled the Perl interface (perl/*):
13215 - ported BN stuff to OpenSSL's different BN library
13216 - made the perl/ source tree CVS-aware
13217 - renamed the package from SSLeay to OpenSSL (the files still contain
13218 their history because I've copied them in the repository)
13219 - removed obsolete files (the test scripts will be replaced
13220 by better Test::Harness variants in the future)
13221 [Ralf S. Engelschall]
13223 *) First cut for a very conservative source tree cleanup:
13224 1. merge various obsolete readme texts into doc/ssleay.txt
13225 where we collect the old documents and readme texts.
13226 2. remove the first part of files where I'm already sure that we no
13227 longer need them because of three reasons: either they are just temporary
13228 files which were left by Eric or they are preserved original files where
13229 I've verified that the diff is also available in the CVS via "cvs diff
13230 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
13231 the crypto/md/ stuff).
13232 [Ralf S. Engelschall]
13234 *) More extension code. Incomplete support for subject and issuer alt
13235 name, issuer and authority key id. Change the i2v function parameters
13236 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
13237 what that's for :-) Fix to ASN1 macro which messed up
13238 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
13241 *) Preliminary support for ENUMERATED type. This is largely copied from the
13245 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
13246 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13248 *) Make sure `make rehash' target really finds the `openssl' program.
13249 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
13251 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
13252 like to hear about it if this slows down other processors.
13255 *) Add CygWin32 platform information to Configure script.
13256 [Alan Batie <batie@aahz.jf.intel.com>]
13258 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
13259 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
13261 *) New program nseq to manipulate netscape certificate sequences
13264 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
13268 *) Fixes to BN code. Previously the default was to define BN_RECURSION
13269 but the BN code had some problems that would cause failures when
13270 doing certificate verification and some other functions.
13271 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13273 *) Add ASN1 and PEM code to support netscape certificate sequences.
13276 *) Add ASN1 and PEM code to support netscape certificate sequences.
13279 *) Add several PKIX and private extended key usage OIDs.
13282 *) Modify the 'ca' program to handle the new extension code. Modify
13283 openssl.cnf for new extension format, add comments.
13286 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
13287 and add a sample to openssl.cnf so req -x509 now adds appropriate
13291 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
13292 error code, add initial support to X509_print() and x509 application.
13295 *) Takes a deep breath and start adding X509 V3 extension support code. Add
13296 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
13297 stuff is currently isolated and isn't even compiled yet.
13300 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
13301 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
13302 Removed the versions check from X509 routines when loading extensions:
13303 this allows certain broken certificates that don't set the version
13304 properly to be processed.
13307 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
13308 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
13309 can still be regenerated with "make depend".
13312 *) Spelling mistake in C version of CAST-128.
13313 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
13315 *) Changes to the error generation code. The perl script err-code.pl
13316 now reads in the old error codes and retains the old numbers, only
13317 adding new ones if necessary. It also only changes the .err files if new
13318 codes are added. The makefiles have been modified to only insert errors
13319 when needed (to avoid needlessly modifying header files). This is done
13320 by only inserting errors if the .err file is newer than the auto generated
13321 C file. To rebuild all the error codes from scratch (the old behaviour)
13322 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
13323 or delete all the .err files.
13326 *) CAST-128 was incorrectly implemented for short keys. The C version has
13327 been fixed, but is untested. The assembler versions are also fixed, but
13328 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
13329 to regenerate it if needed.
13330 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
13331 Hagino <itojun@kame.net>]
13333 *) File was opened incorrectly in randfile.c.
13334 [Ulf Möller <ulf@fitug.de>]
13336 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
13337 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
13338 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
13339 al: it's just almost always a UTCTime. Note this patch adds new error
13340 codes so do a "make errors" if there are problems.
13343 *) Correct Linux 1 recognition in config.
13344 [Ulf Möller <ulf@fitug.de>]
13346 *) Remove pointless MD5 hash when using DSA keys in ca.
13347 [Anonymous <nobody@replay.com>]
13349 *) Generate an error if given an empty string as a cert directory. Also
13350 generate an error if handed NULL (previously returned 0 to indicate an
13351 error, but didn't set one).
13352 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
13354 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
13357 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
13358 parameters. This was causing a warning which killed off the Win32 compile.
13361 *) Remove C++ style comments from crypto/bn/bn_local.h.
13362 [Neil Costigan <neil.costigan@celocom.com>]
13364 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
13365 based on a text string, looking up short and long names and finally
13366 "dot" format. The "dot" format stuff didn't work. Added new function
13367 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
13368 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
13369 OID is not part of the table.
13372 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
13373 X509_LOOKUP_by_alias().
13376 *) Sort openssl functions by name.
13379 *) Get the gendsa program working (hopefully) and add it to app list. Remove
13380 encryption from sample DSA keys (in case anyone is interested the password
13384 *) Make _all_ *_free functions accept a NULL pointer.
13385 [Frans Heymans <fheymans@isaserver.be>]
13387 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
13389 [Anonymous <nobody@replay.com>]
13391 *) s_server should send the CAfile as acceptable CAs, not its own cert.
13392 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13394 *) Don't blow it for numeric -newkey arguments to apps/req.
13395 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13397 *) Temp key "for export" tests were wrong in s3_srvr.c.
13398 [Anonymous <nobody@replay.com>]
13400 *) Add prototype for temp key callback functions
13401 SSL_CTX_set_tmp_{rsa,dh}_callback().
13404 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
13405 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
13408 *) X509_name_add_entry() freed the wrong thing after an error.
13409 [Arne Ansper <arne@ats.cyber.ee>]
13411 *) rsa_eay.c would attempt to free a NULL context.
13412 [Arne Ansper <arne@ats.cyber.ee>]
13414 *) BIO_s_socket() had a broken should_retry() on Windoze.
13415 [Arne Ansper <arne@ats.cyber.ee>]
13417 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
13418 [Arne Ansper <arne@ats.cyber.ee>]
13420 *) Make sure the already existing X509_STORE->depth variable is initialized
13421 in X509_STORE_new(), but document the fact that this variable is still
13422 unused in the certificate verification process.
13423 [Ralf S. Engelschall]
13425 *) Fix the various library and apps files to free up pkeys obtained from
13426 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
13429 *) Fix reference counting in X509_PUBKEY_get(). This makes
13430 demos/maurice/example2.c work, amongst others, probably.
13431 [Steve Henson and Ben Laurie]
13433 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
13434 `openssl' and second, the shortcut symlinks for the `openssl <command>'
13435 are no longer created. This way we have a single and consistent command
13436 line interface `openssl <command>', similar to `cvs <command>'.
13437 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
13439 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
13440 BIT STRING wrapper always have zero unused bits.
13443 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
13446 *) Make the top-level INSTALL documentation easier to understand.
13449 *) Makefiles updated to exit if an error occurs in a sub-directory
13450 make (including if user presses ^C) [Paul Sutton]
13452 *) Make Montgomery context stuff explicit in RSA data structure.
13455 *) Fix build order of pem and err to allow for generated pem.h.
13458 *) Fix renumbering bug in X509_NAME_delete_entry().
13461 *) Enhanced the err-ins.pl script so it makes the error library number
13462 global and can add a library name. This is needed for external ASN1 and
13463 other error libraries.
13466 *) Fixed sk_insert which never worked properly.
13469 *) Fix ASN1 macros so they can handle indefinite length constructed
13470 EXPLICIT tags. Some non standard certificates use these: they can now
13474 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
13475 into a single doc/ssleay.txt bundle. This way the information is still
13476 preserved but no longer messes up this directory. Now it's new room for
13477 the new set of documentation files.
13478 [Ralf S. Engelschall]
13480 *) SETs were incorrectly DER encoded. This was a major pain, because they
13481 shared code with SEQUENCEs, which aren't coded the same. This means that
13482 almost everything to do with SETs or SEQUENCEs has either changed name or
13483 number of arguments.
13484 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
13486 *) Fix test data to work with the above.
13489 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
13490 was already fixed by Eric for 0.9.1 it seems.
13491 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
13493 *) Autodetect FreeBSD3.
13496 *) Fix various bugs in Configure. This affects the following platforms:
13500 unixware-2.0-pentium
13504 *) Eliminate generated files from CVS. Reorder tests to regenerate files
13505 before they are needed.
13508 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
13512 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
13514 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
13515 changed SSLeay to OpenSSL in version strings.
13516 [Ralf S. Engelschall]
13518 *) Some fixups to the top-level documents.
13521 *) Fixed the nasty bug where rsaref.h was not found under compile-time
13522 because the symlink to include/ was missing.
13523 [Ralf S. Engelschall]
13525 *) Incorporated the popular no-RSA/DSA-only patches
13526 which allow to compile a RSA-free SSLeay.
13527 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
13529 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
13530 when "ssleay" is still not found.
13531 [Ralf S. Engelschall]
13533 *) Added more platforms to Configure: Cray T3E, HPUX 11,
13534 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
13536 *) Updated the README file.
13537 [Ralf S. Engelschall]
13539 *) Added various .cvsignore files in the CVS repository subdirs
13540 to make a "cvs update" really silent.
13541 [Ralf S. Engelschall]
13543 *) Recompiled the error-definition header files and added
13544 missing symbols to the Win32 linker tables.
13545 [Ralf S. Engelschall]
13547 *) Cleaned up the top-level documents;
13548 o new files: CHANGES and LICENSE
13549 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
13550 o merged COPYRIGHT into LICENSE
13551 o removed obsolete TODO file
13552 o renamed MICROSOFT to INSTALL.W32
13553 [Ralf S. Engelschall]
13555 *) Removed dummy files from the 0.9.1b source tree:
13556 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
13557 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
13558 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
13559 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
13560 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
13561 [Ralf S. Engelschall]
13563 *) Added various platform portability fixes.
13566 *) The Genesis of the OpenSSL rpject:
13567 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
13568 Young and Tim J. Hudson created while they were working for C2Net until
13570 [The OpenSSL Project]
13573 Changes between 0.9.0b and 0.9.1b [not released]
13575 *) Updated a few CA certificates under certs/
13578 *) Changed some BIGNUM api stuff.
13581 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
13582 DGUX x86, Linux Alpha, etc.
13585 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
13586 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
13590 *) Add -strparse option to asn1pars program which parses nested
13592 [Dr Stephen Henson <shenson@bigfoot.com>]
13594 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
13597 *) DSA fix for "ca" program.
13600 *) Added "-genkey" option to "dsaparam" program.
13603 *) Added RIPE MD160 (rmd160) message digest.
13606 *) Added -a (all) option to "ssleay version" command.
13609 *) Added PLATFORM define which is the id given to Configure.
13612 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
13615 *) Extended the ASN.1 parser routines.
13618 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
13621 *) Added a BN_CTX to the BN library.
13624 *) Fixed the weak key values in DES library
13627 *) Changed API in EVP library for cipher aliases.
13630 *) Added support for RC2/64bit cipher.
13633 *) Converted the lhash library to the crypto/mem.c functions.
13636 *) Added more recognized ASN.1 object ids.
13639 *) Added more RSA padding checks for SSL/TLS.
13642 *) Added BIO proxy/filter functionality.
13645 *) Added extra_certs to SSL_CTX which can be used
13646 send extra CA certificates to the client in the CA cert chain sending
13647 process. It can be configured with SSL_CTX_add_extra_chain_cert().
13650 *) Now Fortezza is denied in the authentication phase because
13651 this is key exchange mechanism is not supported by SSLeay at all.
13654 *) Additional PKCS1 checks.
13657 *) Support the string "TLSv1" for all TLS v1 ciphers.
13660 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
13661 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
13664 *) Fixed a few memory leaks.
13667 *) Fixed various code and comment typos.
13670 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
13671 bytes sent in the client random.
13672 [Edward Bishop <ebishop@spyglass.com>]
projects / openssl.git / blob