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 1.0.2u and 1.0.2v [xx XXX xxxx]
14 Changes between 1.0.2t and 1.0.2u [20 Dec 2019]
16 *) Fixed an an overflow bug in the x64_64 Montgomery squaring procedure
17 used in exponentiation with 512-bit moduli. No EC algorithms are
18 affected. Analysis suggests that attacks against 2-prime RSA1024,
19 3-prime RSA1536, and DSA1024 as a result of this defect would be very
20 difficult to perform and are not believed likely. Attacks against DH512
21 are considered just feasible. However, for an attack the target would
22 have to re-use the DH512 private key, which is not recommended anyway.
23 Also applications directly using the low level API BN_mod_exp may be
24 affected if they use BN_FLG_CONSTTIME.
28 Changes between 1.0.2s and 1.0.2t [10 Sep 2019]
30 *) For built-in EC curves, ensure an EC_GROUP built from the curve name is
31 used even when parsing explicit parameters, when loading a serialized key
32 or calling `EC_GROUP_new_from_ecpkparameters()`/
33 `EC_GROUP_new_from_ecparameters()`.
34 This prevents bypass of security hardening and performance gains,
35 especially for curves with specialized EC_METHODs.
36 By default, if a key encoded with explicit parameters is loaded and later
37 serialized, the output is still encoded with explicit parameters, even if
38 internally a "named" EC_GROUP is used for computation.
41 *) Compute ECC cofactors if not provided during EC_GROUP construction. Before
42 this change, EC_GROUP_set_generator would accept order and/or cofactor as
43 NULL. After this change, only the cofactor parameter can be NULL. It also
44 does some minimal sanity checks on the passed order.
48 *) Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
49 An attack is simple, if the first CMS_recipientInfo is valid but the
50 second CMS_recipientInfo is chosen ciphertext. If the second
51 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
52 encryption key will be replaced by garbage, and the message cannot be
53 decoded, but if the RSA decryption fails, the correct encryption key is
54 used and the recipient will not notice the attack.
55 As a work around for this potential attack the length of the decrypted
56 key must be equal to the cipher default key length, in case the
57 certifiate is not given and all recipientInfo are tried out.
58 The old behaviour can be re-enabled in the CMS code by setting the
59 CMS_DEBUG_DECRYPT flag.
63 *) Document issue with installation paths in diverse Windows builds
65 '/usr/local/ssl' is an unsafe prefix for location to install OpenSSL
66 binaries and run-time config file.
70 Changes between 1.0.2r and 1.0.2s [28 May 2019]
72 *) Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
73 This changes the size when using the genpkey app when no size is given. It
74 fixes an omission in earlier changes that changed all RSA, DSA and DH
75 generation apps to use 2048 bits by default.
78 *) Add FIPS support for Android Arm 64-bit
80 Support for Android Arm 64-bit was added to the OpenSSL FIPS Object
81 Module in Version 2.0.10. For some reason, the corresponding target
82 'android64-aarch64' was missing OpenSSL 1.0.2, whence it could not be
83 built with FIPS support on Android Arm 64-bit. This omission has been
87 Changes between 1.0.2q and 1.0.2r [26 Feb 2019]
89 *) 0-byte record padding oracle
91 If an application encounters a fatal protocol error and then calls
92 SSL_shutdown() twice (once to send a close_notify, and once to receive one)
93 then OpenSSL can respond differently to the calling application if a 0 byte
94 record is received with invalid padding compared to if a 0 byte record is
95 received with an invalid MAC. If the application then behaves differently
96 based on that in a way that is detectable to the remote peer, then this
97 amounts to a padding oracle that could be used to decrypt data.
99 In order for this to be exploitable "non-stitched" ciphersuites must be in
100 use. Stitched ciphersuites are optimised implementations of certain
101 commonly used ciphersuites. Also the application must call SSL_shutdown()
102 twice even if a protocol error has occurred (applications should not do
103 this but some do anyway).
105 This issue was discovered by Juraj Somorovsky, Robert Merget and Nimrod
106 Aviram, with additional investigation by Steven Collison and Andrew
107 Hourselt. It was reported to OpenSSL on 10th December 2018.
111 *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
114 Changes between 1.0.2p and 1.0.2q [20 Nov 2018]
116 *) Microarchitecture timing vulnerability in ECC scalar multiplication
118 OpenSSL ECC scalar multiplication, used in e.g. ECDSA and ECDH, has been
119 shown to be vulnerable to a microarchitecture timing side channel attack.
120 An attacker with sufficient access to mount local timing attacks during
121 ECDSA signature generation could recover the private key.
123 This issue was reported to OpenSSL on 26th October 2018 by Alejandro
124 Cabrera Aldaya, Billy Brumley, Sohaib ul Hassan, Cesar Pereida Garcia and
129 *) Timing vulnerability in DSA signature generation
131 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
132 timing side channel attack. An attacker could use variations in the signing
133 algorithm to recover the private key.
135 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
139 *) Resolve a compatibility issue in EC_GROUP handling with the FIPS Object
140 Module, accidentally introduced while backporting security fixes from the
141 development branch and hindering the use of ECC in FIPS mode.
144 Changes between 1.0.2o and 1.0.2p [14 Aug 2018]
146 *) Client DoS due to large DH parameter
148 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
149 malicious server can send a very large prime value to the client. This will
150 cause the client to spend an unreasonably long period of time generating a
151 key for this prime resulting in a hang until the client has finished. This
152 could be exploited in a Denial Of Service attack.
154 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
158 *) Cache timing vulnerability in RSA Key Generation
160 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
161 a cache timing side channel attack. An attacker with sufficient access to
162 mount cache timing attacks during the RSA key generation process could
163 recover the private key.
165 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
166 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
170 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
171 parameter is no longer accepted, as it leads to a corrupt table. NULL
172 pem_str is reserved for alias entries only.
175 *) Revert blinding in ECDSA sign and instead make problematic addition
176 length-invariant. Switch even to fixed-length Montgomery multiplication.
179 *) Change generating and checking of primes so that the error rate of not
180 being prime depends on the intended use based on the size of the input.
181 For larger primes this will result in more rounds of Miller-Rabin.
182 The maximal error rate for primes with more than 1080 bits is lowered
184 [Kurt Roeckx, Annie Yousar]
186 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
189 *) Add blinding to ECDSA and DSA signatures to protect against side channel
190 attacks discovered by Keegan Ryan (NCC Group).
193 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
194 now allow empty (zero character) pass phrases.
197 *) Certificate time validation (X509_cmp_time) enforces stricter
198 compliance with RFC 5280. Fractional seconds and timezone offsets
199 are no longer allowed.
202 Changes between 1.0.2n and 1.0.2o [27 Mar 2018]
204 *) Constructed ASN.1 types with a recursive definition could exceed the stack
206 Constructed ASN.1 types with a recursive definition (such as can be found
207 in PKCS7) could eventually exceed the stack given malicious input with
208 excessive recursion. This could result in a Denial Of Service attack. There
209 are no such structures used within SSL/TLS that come from untrusted sources
210 so this is considered safe.
212 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
217 Changes between 1.0.2m and 1.0.2n [7 Dec 2017]
219 *) Read/write after SSL object in error state
221 OpenSSL 1.0.2 (starting from version 1.0.2b) introduced an "error state"
222 mechanism. The intent was that if a fatal error occurred during a handshake
223 then OpenSSL would move into the error state and would immediately fail if
224 you attempted to continue the handshake. This works as designed for the
225 explicit handshake functions (SSL_do_handshake(), SSL_accept() and
226 SSL_connect()), however due to a bug it does not work correctly if
227 SSL_read() or SSL_write() is called directly. In that scenario, if the
228 handshake fails then a fatal error will be returned in the initial function
229 call. If SSL_read()/SSL_write() is subsequently called by the application
230 for the same SSL object then it will succeed and the data is passed without
231 being decrypted/encrypted directly from the SSL/TLS record layer.
233 In order to exploit this issue an application bug would have to be present
234 that resulted in a call to SSL_read()/SSL_write() being issued after having
235 already received a fatal error.
237 This issue was reported to OpenSSL by David Benjamin (Google).
241 *) rsaz_1024_mul_avx2 overflow bug on x86_64
243 There is an overflow bug in the AVX2 Montgomery multiplication procedure
244 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
245 Analysis suggests that attacks against RSA and DSA as a result of this
246 defect would be very difficult to perform and are not believed likely.
247 Attacks against DH1024 are considered just feasible, because most of the
248 work necessary to deduce information about a private key may be performed
249 offline. The amount of resources required for such an attack would be
250 significant. However, for an attack on TLS to be meaningful, the server
251 would have to share the DH1024 private key among multiple clients, which is
252 no longer an option since CVE-2016-0701.
254 This only affects processors that support the AVX2 but not ADX extensions
255 like Intel Haswell (4th generation).
257 This issue was reported to OpenSSL by David Benjamin (Google). The issue
258 was originally found via the OSS-Fuzz project.
262 Changes between 1.0.2l and 1.0.2m [2 Nov 2017]
264 *) bn_sqrx8x_internal carry bug on x86_64
266 There is a carry propagating bug in the x86_64 Montgomery squaring
267 procedure. No EC algorithms are affected. Analysis suggests that attacks
268 against RSA and DSA as a result of this defect would be very difficult to
269 perform and are not believed likely. Attacks against DH are considered just
270 feasible (although very difficult) because most of the work necessary to
271 deduce information about a private key may be performed offline. The amount
272 of resources required for such an attack would be very significant and
273 likely only accessible to a limited number of attackers. An attacker would
274 additionally need online access to an unpatched system using the target
275 private key in a scenario with persistent DH parameters and a private
276 key that is shared between multiple clients.
278 This only affects processors that support the BMI1, BMI2 and ADX extensions
279 like Intel Broadwell (5th generation) and later or AMD Ryzen.
281 This issue was reported to OpenSSL by the OSS-Fuzz project.
285 *) Malformed X.509 IPAddressFamily could cause OOB read
287 If an X.509 certificate has a malformed IPAddressFamily extension,
288 OpenSSL could do a one-byte buffer overread. The most likely result
289 would be an erroneous display of the certificate in text format.
291 This issue was reported to OpenSSL by the OSS-Fuzz project.
295 Changes between 1.0.2k and 1.0.2l [25 May 2017]
297 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
298 platform rather than 'mingw'.
301 Changes between 1.0.2j and 1.0.2k [26 Jan 2017]
303 *) Truncated packet could crash via OOB read
305 If one side of an SSL/TLS path is running on a 32-bit host and a specific
306 cipher is being used, then a truncated packet can cause that host to
307 perform an out-of-bounds read, usually resulting in a crash.
309 This issue was reported to OpenSSL by Robert Święcki of Google.
313 *) BN_mod_exp may produce incorrect results on x86_64
315 There is a carry propagating bug in the x86_64 Montgomery squaring
316 procedure. No EC algorithms are affected. Analysis suggests that attacks
317 against RSA and DSA as a result of this defect would be very difficult to
318 perform and are not believed likely. Attacks against DH are considered just
319 feasible (although very difficult) because most of the work necessary to
320 deduce information about a private key may be performed offline. The amount
321 of resources required for such an attack would be very significant and
322 likely only accessible to a limited number of attackers. An attacker would
323 additionally need online access to an unpatched system using the target
324 private key in a scenario with persistent DH parameters and a private
325 key that is shared between multiple clients. For example this can occur by
326 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
327 similar to CVE-2015-3193 but must be treated as a separate problem.
329 This issue was reported to OpenSSL by the OSS-Fuzz project.
333 *) Montgomery multiplication may produce incorrect results
335 There is a carry propagating bug in the Broadwell-specific Montgomery
336 multiplication procedure that handles input lengths divisible by, but
337 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
338 and DH private keys are impossible. This is because the subroutine in
339 question is not used in operations with the private key itself and an input
340 of the attacker's direct choice. Otherwise the bug can manifest itself as
341 transient authentication and key negotiation failures or reproducible
342 erroneous outcome of public-key operations with specially crafted input.
343 Among EC algorithms only Brainpool P-512 curves are affected and one
344 presumably can attack ECDH key negotiation. Impact was not analyzed in
345 detail, because pre-requisites for attack are considered unlikely. Namely
346 multiple clients have to choose the curve in question and the server has to
347 share the private key among them, neither of which is default behaviour.
348 Even then only clients that chose the curve will be affected.
350 This issue was publicly reported as transient failures and was not
351 initially recognized as a security issue. Thanks to Richard Morgan for
352 providing reproducible case.
356 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0
357 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
358 prevent issues where no progress is being made and the peer continually
359 sends unrecognised record types, using up resources processing them.
362 Changes between 1.0.2i and 1.0.2j [26 Sep 2016]
364 *) Missing CRL sanity check
366 A bug fix which included a CRL sanity check was added to OpenSSL 1.1.0
367 but was omitted from OpenSSL 1.0.2i. As a result any attempt to use
368 CRLs in OpenSSL 1.0.2i will crash with a null pointer exception.
370 This issue only affects the OpenSSL 1.0.2i
374 Changes between 1.0.2h and 1.0.2i [22 Sep 2016]
376 *) OCSP Status Request extension unbounded memory growth
378 A malicious client can send an excessively large OCSP Status Request
379 extension. If that client continually requests renegotiation, sending a
380 large OCSP Status Request extension each time, then there will be unbounded
381 memory growth on the server. This will eventually lead to a Denial Of
382 Service attack through memory exhaustion. Servers with a default
383 configuration are vulnerable even if they do not support OCSP. Builds using
384 the "no-ocsp" build time option are not affected.
386 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
390 *) In order to mitigate the SWEET32 attack, the DES ciphers were moved from
393 This issue was reported to OpenSSL Karthikeyan Bhargavan and Gaetan
398 *) OOB write in MDC2_Update()
400 An overflow can occur in MDC2_Update() either if called directly or
401 through the EVP_DigestUpdate() function using MDC2. If an attacker
402 is able to supply very large amounts of input data after a previous
403 call to EVP_EncryptUpdate() with a partial block then a length check
404 can overflow resulting in a heap corruption.
406 The amount of data needed is comparable to SIZE_MAX which is impractical
409 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
413 *) Malformed SHA512 ticket DoS
415 If a server uses SHA512 for TLS session ticket HMAC it is vulnerable to a
416 DoS attack where a malformed ticket will result in an OOB read which will
419 The use of SHA512 in TLS session tickets is comparatively rare as it requires
420 a custom server callback and ticket lookup mechanism.
422 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
426 *) OOB write in BN_bn2dec()
428 The function BN_bn2dec() does not check the return value of BN_div_word().
429 This can cause an OOB write if an application uses this function with an
430 overly large BIGNUM. This could be a problem if an overly large certificate
431 or CRL is printed out from an untrusted source. TLS is not affected because
432 record limits will reject an oversized certificate before it is parsed.
434 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
438 *) OOB read in TS_OBJ_print_bio()
440 The function TS_OBJ_print_bio() misuses OBJ_obj2txt(): the return value is
441 the total length the OID text representation would use and not the amount
442 of data written. This will result in OOB reads when large OIDs are
445 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
449 *) Pointer arithmetic undefined behaviour
451 Avoid some undefined pointer arithmetic
453 A common idiom in the codebase is to check limits in the following manner:
456 Where "p" points to some malloc'd data of SIZE bytes and
459 "len" here could be from some externally supplied data (e.g. from a TLS
462 The rules of C pointer arithmetic are such that "p + len" is only well
463 defined where len <= SIZE. Therefore the above idiom is actually
466 For example this could cause problems if some malloc implementation
467 provides an address for "p" such that "p + len" actually overflows for
468 values of len that are too big and therefore p + len < limit.
470 This issue was reported to OpenSSL by Guido Vranken
474 *) Constant time flag not preserved in DSA signing
476 Operations in the DSA signing algorithm should run in constant time in
477 order to avoid side channel attacks. A flaw in the OpenSSL DSA
478 implementation means that a non-constant time codepath is followed for
479 certain operations. This has been demonstrated through a cache-timing
480 attack to be sufficient for an attacker to recover the private DSA key.
482 This issue was reported by César Pereida (Aalto University), Billy Brumley
483 (Tampere University of Technology), and Yuval Yarom (The University of
488 *) DTLS buffered message DoS
490 In a DTLS connection where handshake messages are delivered out-of-order
491 those messages that OpenSSL is not yet ready to process will be buffered
492 for later use. Under certain circumstances, a flaw in the logic means that
493 those messages do not get removed from the buffer even though the handshake
494 has been completed. An attacker could force up to approx. 15 messages to
495 remain in the buffer when they are no longer required. These messages will
496 be cleared when the DTLS connection is closed. The default maximum size for
497 a message is 100k. Therefore the attacker could force an additional 1500k
498 to be consumed per connection. By opening many simulataneous connections an
499 attacker could cause a DoS attack through memory exhaustion.
501 This issue was reported to OpenSSL by Quan Luo.
505 *) DTLS replay protection DoS
507 A flaw in the DTLS replay attack protection mechanism means that records
508 that arrive for future epochs update the replay protection "window" before
509 the MAC for the record has been validated. This could be exploited by an
510 attacker by sending a record for the next epoch (which does not have to
511 decrypt or have a valid MAC), with a very large sequence number. This means
512 that all subsequent legitimate packets are dropped causing a denial of
513 service for a specific DTLS connection.
515 This issue was reported to OpenSSL by the OCAP audit team.
519 *) Certificate message OOB reads
521 In OpenSSL 1.0.2 and earlier some missing message length checks can result
522 in OOB reads of up to 2 bytes beyond an allocated buffer. There is a
523 theoretical DoS risk but this has not been observed in practice on common
526 The messages affected are client certificate, client certificate request
527 and server certificate. As a result the attack can only be performed
528 against a client or a server which enables client authentication.
530 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
534 Changes between 1.0.2g and 1.0.2h [3 May 2016]
536 *) Prevent padding oracle in AES-NI CBC MAC check
538 A MITM attacker can use a padding oracle attack to decrypt traffic
539 when the connection uses an AES CBC cipher and the server support
542 This issue was introduced as part of the fix for Lucky 13 padding
543 attack (CVE-2013-0169). The padding check was rewritten to be in
544 constant time by making sure that always the same bytes are read and
545 compared against either the MAC or padding bytes. But it no longer
546 checked that there was enough data to have both the MAC and padding
549 This issue was reported by Juraj Somorovsky using TLS-Attacker.
553 *) Fix EVP_EncodeUpdate overflow
555 An overflow can occur in the EVP_EncodeUpdate() function which is used for
556 Base64 encoding of binary data. If an attacker is able to supply very large
557 amounts of input data then a length check can overflow resulting in a heap
560 Internally to OpenSSL the EVP_EncodeUpdate() function is primarly used by
561 the PEM_write_bio* family of functions. These are mainly used within the
562 OpenSSL command line applications, so any application which processes data
563 from an untrusted source and outputs it as a PEM file should be considered
564 vulnerable to this issue. User applications that call these APIs directly
565 with large amounts of untrusted data may also be vulnerable.
567 This issue was reported by Guido Vranken.
571 *) Fix EVP_EncryptUpdate overflow
573 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
574 is able to supply very large amounts of input data after a previous call to
575 EVP_EncryptUpdate() with a partial block then a length check can overflow
576 resulting in a heap corruption. Following an analysis of all OpenSSL
577 internal usage of the EVP_EncryptUpdate() function all usage is one of two
578 forms. The first form is where the EVP_EncryptUpdate() call is known to be
579 the first called function after an EVP_EncryptInit(), and therefore that
580 specific call must be safe. The second form is where the length passed to
581 EVP_EncryptUpdate() can be seen from the code to be some small value and
582 therefore there is no possibility of an overflow. Since all instances are
583 one of these two forms, it is believed that there can be no overflows in
584 internal code due to this problem. It should be noted that
585 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
586 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
587 of these calls have also been analysed too and it is believed there are no
588 instances in internal usage where an overflow could occur.
590 This issue was reported by Guido Vranken.
594 *) Prevent ASN.1 BIO excessive memory allocation
596 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
597 a short invalid encoding can casuse allocation of large amounts of memory
598 potentially consuming excessive resources or exhausting memory.
600 Any application parsing untrusted data through d2i BIO functions is
601 affected. The memory based functions such as d2i_X509() are *not* affected.
602 Since the memory based functions are used by the TLS library, TLS
603 applications are not affected.
605 This issue was reported by Brian Carpenter.
611 ASN1 Strings that are over 1024 bytes can cause an overread in applications
612 using the X509_NAME_oneline() function on EBCDIC systems. This could result
613 in arbitrary stack data being returned in the buffer.
615 This issue was reported by Guido Vranken.
619 *) Modify behavior of ALPN to invoke callback after SNI/servername
620 callback, such that updates to the SSL_CTX affect ALPN.
623 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
627 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
628 methods are enabled and ssl2 is disabled the methods return NULL.
631 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
633 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
634 Builds that are not configured with "enable-weak-ssl-ciphers" will not
635 provide any "EXPORT" or "LOW" strength ciphers.
638 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
639 is by default disabled at build-time. Builds that are not configured with
640 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
641 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
642 will need to explicitly call either of:
644 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
646 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
648 as appropriate. Even if either of those is used, or the application
649 explicitly uses the version-specific SSLv2_method() or its client and
650 server variants, SSLv2 ciphers vulnerable to exhaustive search key
651 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
652 ciphers, and SSLv2 56-bit DES are no longer available.
656 *) Fix a double-free in DSA code
658 A double free bug was discovered when OpenSSL parses malformed DSA private
659 keys and could lead to a DoS attack or memory corruption for applications
660 that receive DSA private keys from untrusted sources. This scenario is
663 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
668 *) Disable SRP fake user seed to address a server memory leak.
670 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
672 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
673 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
674 was changed to ignore the "fake user" SRP seed, even if the seed
677 Users should use SRP_VBASE_get1_by_user instead. Note that in
678 SRP_VBASE_get1_by_user, caller must free the returned value. Note
679 also that even though configuring the SRP seed attempts to hide
680 invalid usernames by continuing the handshake with fake
681 credentials, this behaviour is not constant time and no strong
682 guarantees are made that the handshake is indistinguishable from
683 that of a valid user.
687 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
689 In the BN_hex2bn function the number of hex digits is calculated using an
690 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
691 large values of |i| this can result in |bn_expand| not allocating any
692 memory because |i * 4| is negative. This can leave the internal BIGNUM data
693 field as NULL leading to a subsequent NULL ptr deref. For very large values
694 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
695 In this case memory is allocated to the internal BIGNUM data field, but it
696 is insufficiently sized leading to heap corruption. A similar issue exists
697 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
698 is ever called by user applications with very large untrusted hex/dec data.
699 This is anticipated to be a rare occurrence.
701 All OpenSSL internal usage of these functions use data that is not expected
702 to be untrusted, e.g. config file data or application command line
703 arguments. If user developed applications generate config file data based
704 on untrusted data then it is possible that this could also lead to security
705 consequences. This is also anticipated to be rare.
707 This issue was reported to OpenSSL by Guido Vranken.
711 *) Fix memory issues in BIO_*printf functions
713 The internal |fmtstr| function used in processing a "%s" format string in
714 the BIO_*printf functions could overflow while calculating the length of a
715 string and cause an OOB read when printing very long strings.
717 Additionally the internal |doapr_outch| function can attempt to write to an
718 OOB memory location (at an offset from the NULL pointer) in the event of a
719 memory allocation failure. In 1.0.2 and below this could be caused where
720 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
721 could be in processing a very long "%s" format string. Memory leaks can
724 The first issue may mask the second issue dependent on compiler behaviour.
725 These problems could enable attacks where large amounts of untrusted data
726 is passed to the BIO_*printf functions. If applications use these functions
727 in this way then they could be vulnerable. OpenSSL itself uses these
728 functions when printing out human-readable dumps of ASN.1 data. Therefore
729 applications that print this data could be vulnerable if the data is from
730 untrusted sources. OpenSSL command line applications could also be
731 vulnerable where they print out ASN.1 data, or if untrusted data is passed
732 as command line arguments.
734 Libssl is not considered directly vulnerable. Additionally certificates etc
735 received via remote connections via libssl are also unlikely to be able to
736 trigger these issues because of message size limits enforced within libssl.
738 This issue was reported to OpenSSL Guido Vranken.
742 *) Side channel attack on modular exponentiation
744 A side-channel attack was found which makes use of cache-bank conflicts on
745 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
746 of RSA keys. The ability to exploit this issue is limited as it relies on
747 an attacker who has control of code in a thread running on the same
748 hyper-threaded core as the victim thread which is performing decryptions.
750 This issue was reported to OpenSSL by Yuval Yarom, The University of
751 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
752 Nadia Heninger, University of Pennsylvania with more information at
753 http://cachebleed.info.
757 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
758 if no keysize is specified with default_bits. This fixes an
759 omission in an earlier change that changed all RSA/DSA key generation
760 apps to use 2048 bits by default.
763 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
765 *) DH small subgroups
767 Historically OpenSSL only ever generated DH parameters based on "safe"
768 primes. More recently (in version 1.0.2) support was provided for
769 generating X9.42 style parameter files such as those required for RFC 5114
770 support. The primes used in such files may not be "safe". Where an
771 application is using DH configured with parameters based on primes that are
772 not "safe" then an attacker could use this fact to find a peer's private
773 DH exponent. This attack requires that the attacker complete multiple
774 handshakes in which the peer uses the same private DH exponent. For example
775 this could be used to discover a TLS server's private DH exponent if it's
776 reusing the private DH exponent or it's using a static DH ciphersuite.
778 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
779 TLS. It is not on by default. If the option is not set then the server
780 reuses the same private DH exponent for the life of the server process and
781 would be vulnerable to this attack. It is believed that many popular
782 applications do set this option and would therefore not be at risk.
784 The fix for this issue adds an additional check where a "q" parameter is
785 available (as is the case in X9.42 based parameters). This detects the
786 only known attack, and is the only possible defense for static DH
787 ciphersuites. This could have some performance impact.
789 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
790 default and cannot be disabled. This could have some performance impact.
792 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
796 *) SSLv2 doesn't block disabled ciphers
798 A malicious client can negotiate SSLv2 ciphers that have been disabled on
799 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
800 been disabled, provided that the SSLv2 protocol was not also disabled via
803 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
804 and Sebastian Schinzel.
808 *) Reject DH handshakes with parameters shorter than 1024 bits.
811 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
813 *) BN_mod_exp may produce incorrect results on x86_64
815 There is a carry propagating bug in the x86_64 Montgomery squaring
816 procedure. No EC algorithms are affected. Analysis suggests that attacks
817 against RSA and DSA as a result of this defect would be very difficult to
818 perform and are not believed likely. Attacks against DH are considered just
819 feasible (although very difficult) because most of the work necessary to
820 deduce information about a private key may be performed offline. The amount
821 of resources required for such an attack would be very significant and
822 likely only accessible to a limited number of attackers. An attacker would
823 additionally need online access to an unpatched system using the target
824 private key in a scenario with persistent DH parameters and a private
825 key that is shared between multiple clients. For example this can occur by
826 default in OpenSSL DHE based SSL/TLS ciphersuites.
828 This issue was reported to OpenSSL by Hanno Böck.
832 *) Certificate verify crash with missing PSS parameter
834 The signature verification routines will crash with a NULL pointer
835 dereference if presented with an ASN.1 signature using the RSA PSS
836 algorithm and absent mask generation function parameter. Since these
837 routines are used to verify certificate signature algorithms this can be
838 used to crash any certificate verification operation and exploited in a
839 DoS attack. Any application which performs certificate verification is
840 vulnerable including OpenSSL clients and servers which enable client
843 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
847 *) X509_ATTRIBUTE memory leak
849 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
850 memory. This structure is used by the PKCS#7 and CMS routines so any
851 application which reads PKCS#7 or CMS data from untrusted sources is
852 affected. SSL/TLS is not affected.
854 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
859 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
860 This changes the decoding behaviour for some invalid messages,
861 though the change is mostly in the more lenient direction, and
862 legacy behaviour is preserved as much as possible.
865 *) In DSA_generate_parameters_ex, if the provided seed is too short,
866 use a random seed, as already documented.
867 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
869 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
871 *) Alternate chains certificate forgery
873 During certificate verfification, OpenSSL will attempt to find an
874 alternative certificate chain if the first attempt to build such a chain
875 fails. An error in the implementation of this logic can mean that an
876 attacker could cause certain checks on untrusted certificates to be
877 bypassed, such as the CA flag, enabling them to use a valid leaf
878 certificate to act as a CA and "issue" an invalid certificate.
880 This issue was reported to OpenSSL by Adam Langley/David Benjamin
885 *) Race condition handling PSK identify hint
887 If PSK identity hints are received by a multi-threaded client then
888 the values are wrongly updated in the parent SSL_CTX structure. This can
889 result in a race condition potentially leading to a double free of the
894 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
896 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
897 incompatibility in the handling of HMAC. The previous ABI has now been
900 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
902 *) Malformed ECParameters causes infinite loop
904 When processing an ECParameters structure OpenSSL enters an infinite loop
905 if the curve specified is over a specially malformed binary polynomial
908 This can be used to perform denial of service against any
909 system which processes public keys, certificate requests or
910 certificates. This includes TLS clients and TLS servers with
911 client authentication enabled.
913 This issue was reported to OpenSSL by Joseph Barr-Pixton.
917 *) Exploitable out-of-bounds read in X509_cmp_time
919 X509_cmp_time does not properly check the length of the ASN1_TIME
920 string and can read a few bytes out of bounds. In addition,
921 X509_cmp_time accepts an arbitrary number of fractional seconds in the
924 An attacker can use this to craft malformed certificates and CRLs of
925 various sizes and potentially cause a segmentation fault, resulting in
926 a DoS on applications that verify certificates or CRLs. TLS clients
927 that verify CRLs are affected. TLS clients and servers with client
928 authentication enabled may be affected if they use custom verification
931 This issue was reported to OpenSSL by Robert Swiecki (Google), and
932 independently by Hanno Böck.
936 *) PKCS7 crash with missing EnvelopedContent
938 The PKCS#7 parsing code does not handle missing inner EncryptedContent
939 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
940 with missing content and trigger a NULL pointer dereference on parsing.
942 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
943 structures from untrusted sources are affected. OpenSSL clients and
944 servers are not affected.
946 This issue was reported to OpenSSL by Michal Zalewski (Google).
950 *) CMS verify infinite loop with unknown hash function
952 When verifying a signedData message the CMS code can enter an infinite loop
953 if presented with an unknown hash function OID. This can be used to perform
954 denial of service against any system which verifies signedData messages using
956 This issue was reported to OpenSSL by Johannes Bauer.
960 *) Race condition handling NewSessionTicket
962 If a NewSessionTicket is received by a multi-threaded client when attempting to
963 reuse a previous ticket then a race condition can occur potentially leading to
964 a double free of the ticket data.
968 *) Removed support for the two export grade static DH ciphersuites
969 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
970 were newly added (along with a number of other static DH ciphersuites) to
971 1.0.2. However the two export ones have *never* worked since they were
972 introduced. It seems strange in any case to be adding new export
973 ciphersuites, and given "logjam" it also does not seem correct to fix them.
976 *) Only support 256-bit or stronger elliptic curves with the
977 'ecdh_auto' setting (server) or by default (client). Of supported
978 curves, prefer P-256 (both).
981 *) Reject DH handshakes with parameters shorter than 768 bits.
982 [Kurt Roeckx and Emilia Kasper]
984 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
986 *) ClientHello sigalgs DoS fix
988 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
989 invalid signature algorithms extension a NULL pointer dereference will
990 occur. This can be exploited in a DoS attack against the server.
992 This issue was was reported to OpenSSL by David Ramos of Stanford
995 [Stephen Henson and Matt Caswell]
997 *) Multiblock corrupted pointer fix
999 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
1000 feature only applies on 64 bit x86 architecture platforms that support AES
1001 NI instructions. A defect in the implementation of "multiblock" can cause
1002 OpenSSL's internal write buffer to become incorrectly set to NULL when
1003 using non-blocking IO. Typically, when the user application is using a
1004 socket BIO for writing, this will only result in a failed connection.
1005 However if some other BIO is used then it is likely that a segmentation
1006 fault will be triggered, thus enabling a potential DoS attack.
1008 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
1012 *) Segmentation fault in DTLSv1_listen fix
1014 The DTLSv1_listen function is intended to be stateless and processes the
1015 initial ClientHello from many peers. It is common for user code to loop
1016 over the call to DTLSv1_listen until a valid ClientHello is received with
1017 an associated cookie. A defect in the implementation of DTLSv1_listen means
1018 that state is preserved in the SSL object from one invocation to the next
1019 that can lead to a segmentation fault. Errors processing the initial
1020 ClientHello can trigger this scenario. An example of such an error could be
1021 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
1024 This issue was reported to OpenSSL by Per Allansson.
1028 *) Segmentation fault in ASN1_TYPE_cmp fix
1030 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
1031 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
1032 certificate signature algorithm consistency this can be used to crash any
1033 certificate verification operation and exploited in a DoS attack. Any
1034 application which performs certificate verification is vulnerable including
1035 OpenSSL clients and servers which enable client authentication.
1039 *) Segmentation fault for invalid PSS parameters fix
1041 The signature verification routines will crash with a NULL pointer
1042 dereference if presented with an ASN.1 signature using the RSA PSS
1043 algorithm and invalid parameters. Since these routines are used to verify
1044 certificate signature algorithms this can be used to crash any
1045 certificate verification operation and exploited in a DoS attack. Any
1046 application which performs certificate verification is vulnerable including
1047 OpenSSL clients and servers which enable client authentication.
1049 This issue was was reported to OpenSSL by Brian Carpenter.
1053 *) ASN.1 structure reuse memory corruption fix
1055 Reusing a structure in ASN.1 parsing may allow an attacker to cause
1056 memory corruption via an invalid write. Such reuse is and has been
1057 strongly discouraged and is believed to be rare.
1059 Applications that parse structures containing CHOICE or ANY DEFINED BY
1060 components may be affected. Certificate parsing (d2i_X509 and related
1061 functions) are however not affected. OpenSSL clients and servers are
1066 *) PKCS7 NULL pointer dereferences fix
1068 The PKCS#7 parsing code does not handle missing outer ContentInfo
1069 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
1070 missing content and trigger a NULL pointer dereference on parsing.
1072 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
1073 otherwise parse PKCS#7 structures from untrusted sources are
1074 affected. OpenSSL clients and servers are not affected.
1076 This issue was reported to OpenSSL by Michal Zalewski (Google).
1080 *) DoS via reachable assert in SSLv2 servers fix
1082 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
1083 servers that both support SSLv2 and enable export cipher suites by sending
1084 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
1086 This issue was discovered by Sean Burford (Google) and Emilia Käsper
1087 (OpenSSL development team).
1091 *) Empty CKE with client auth and DHE fix
1093 If client auth is used then a server can seg fault in the event of a DHE
1094 ciphersuite being selected and a zero length ClientKeyExchange message
1095 being sent by the client. This could be exploited in a DoS attack.
1099 *) Handshake with unseeded PRNG fix
1101 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
1102 with an unseeded PRNG. The conditions are:
1103 - The client is on a platform where the PRNG has not been seeded
1104 automatically, and the user has not seeded manually
1105 - A protocol specific client method version has been used (i.e. not
1106 SSL_client_methodv23)
1107 - A ciphersuite is used that does not require additional random data from
1108 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
1110 If the handshake succeeds then the client random that has been used will
1111 have been generated from a PRNG with insufficient entropy and therefore the
1112 output may be predictable.
1114 For example using the following command with an unseeded openssl will
1115 succeed on an unpatched platform:
1117 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
1121 *) Use After Free following d2i_ECPrivatekey error fix
1123 A malformed EC private key file consumed via the d2i_ECPrivateKey function
1124 could cause a use after free condition. This, in turn, could cause a double
1125 free in several private key parsing functions (such as d2i_PrivateKey
1126 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
1127 for applications that receive EC private keys from untrusted
1128 sources. This scenario is considered rare.
1130 This issue was discovered by the BoringSSL project and fixed in their
1135 *) X509_to_X509_REQ NULL pointer deref fix
1137 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
1138 the certificate key is invalid. This function is rarely used in practice.
1140 This issue was discovered by Brian Carpenter.
1144 *) Removed the export ciphers from the DEFAULT ciphers
1147 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
1149 *) Change RSA and DH/DSA key generation apps to generate 2048-bit
1153 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
1154 ARMv5 through ARMv8, as opposite to "locking" it to single one.
1155 So far those who have to target multiple plaforms would compromise
1156 and argue that binary targeting say ARMv5 would still execute on
1157 ARMv8. "Universal" build resolves this compromise by providing
1158 near-optimal performance even on newer platforms.
1161 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
1162 (other platforms pending).
1163 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
1165 *) Add support for the SignedCertificateTimestampList certificate and
1166 OCSP response extensions from RFC6962.
1169 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
1170 for corner cases. (Certain input points at infinity could lead to
1171 bogus results, with non-infinity inputs mapped to infinity too.)
1174 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
1175 This covers AES, SHA256/512 and GHASH. "Initial" means that most
1176 common cases are optimized and there still is room for further
1177 improvements. Vector Permutation AES for Altivec is also added.
1180 *) Add support for little-endian ppc64 Linux target.
1181 [Marcelo Cerri (IBM)]
1183 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
1184 SHA1, SHA256 and GHASH. "Initial" means that most common cases
1185 are optimized and there still is room for further improvements.
1186 Both 32- and 64-bit modes are supported.
1187 [Andy Polyakov, Ard Biesheuvel (Linaro)]
1189 *) Improved ARMv7 NEON support.
1192 *) Support for SPARC Architecture 2011 crypto extensions, first
1193 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
1194 SHA256/512, MD5, GHASH and modular exponentiation.
1195 [Andy Polyakov, David Miller]
1197 *) Accelerated modular exponentiation for Intel processors, a.k.a.
1199 [Shay Gueron & Vlad Krasnov (Intel Corp)]
1201 *) Support for new and upcoming Intel processors, including AVX2,
1202 BMI and SHA ISA extensions. This includes additional "stitched"
1203 implementations, AESNI-SHA256 and GCM, and multi-buffer support
1206 This work was sponsored by Intel Corp.
1209 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
1210 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
1211 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
1214 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
1215 this fixes a limiation in previous versions of OpenSSL.
1218 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
1219 MGF1 digest and OAEP label.
1222 *) Add EVP support for key wrapping algorithms, to avoid problems with
1223 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
1224 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
1225 algorithms and include tests cases.
1228 *) Add functions to allocate and set the fields of an ECDSA_METHOD
1230 [Douglas E. Engert, Steve Henson]
1232 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
1233 difference in days and seconds between two tm or ASN1_TIME structures.
1236 *) Add -rev test option to s_server to just reverse order of characters
1237 received by client and send back to server. Also prints an abbreviated
1238 summary of the connection parameters.
1241 *) New option -brief for s_client and s_server to print out a brief summary
1242 of connection parameters.
1245 *) Add callbacks for arbitrary TLS extensions.
1246 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
1248 *) New option -crl_download in several openssl utilities to download CRLs
1249 from CRLDP extension in certificates.
1252 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
1255 *) New function X509_CRL_diff to generate a delta CRL from the difference
1256 of two full CRLs. Add support to "crl" utility.
1259 *) New functions to set lookup_crls function and to retrieve
1260 X509_STORE from X509_STORE_CTX.
1263 *) Print out deprecated issuer and subject unique ID fields in
1267 *) Extend OCSP I/O functions so they can be used for simple general purpose
1268 HTTP as well as OCSP. New wrapper function which can be used to download
1269 CRLs using the OCSP API.
1272 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
1275 *) SSL_CONF* functions. These provide a common framework for application
1276 configuration using configuration files or command lines.
1279 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
1280 message callback and prints the results. Needs compile time option
1281 "enable-ssl-trace". New options to s_client and s_server to enable
1285 *) New ctrl and macro to retrieve supported points extensions.
1286 Print out extension in s_server and s_client.
1289 *) New functions to retrieve certificate signature and signature
1293 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
1297 *) New Suite B modes for TLS code. These use and enforce the requirements
1298 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
1299 only use Suite B curves. The Suite B modes can be set by using the
1300 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
1303 *) New chain verification flags for Suite B levels of security. Check
1304 algorithms are acceptable when flags are set in X509_verify_cert.
1307 *) Make tls1_check_chain return a set of flags indicating checks passed
1308 by a certificate chain. Add additional tests to handle client
1309 certificates: checks for matching certificate type and issuer name
1313 *) If an attempt is made to use a signature algorithm not in the peer
1314 preference list abort the handshake. If client has no suitable
1315 signature algorithms in response to a certificate request do not
1316 use the certificate.
1319 *) If server EC tmp key is not in client preference list abort handshake.
1322 *) Add support for certificate stores in CERT structure. This makes it
1323 possible to have different stores per SSL structure or one store in
1324 the parent SSL_CTX. Include distint stores for certificate chain
1325 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
1326 to build and store a certificate chain in CERT structure: returing
1327 an error if the chain cannot be built: this will allow applications
1328 to test if a chain is correctly configured.
1330 Note: if the CERT based stores are not set then the parent SSL_CTX
1331 store is used to retain compatibility with existing behaviour.
1335 *) New function ssl_set_client_disabled to set a ciphersuite disabled
1336 mask based on the current session, check mask when sending client
1337 hello and checking the requested ciphersuite.
1340 *) New ctrls to retrieve and set certificate types in a certificate
1341 request message. Print out received values in s_client. If certificate
1342 types is not set with custom values set sensible values based on
1343 supported signature algorithms.
1346 *) Support for distinct client and server supported signature algorithms.
1349 *) Add certificate callback. If set this is called whenever a certificate
1350 is required by client or server. An application can decide which
1351 certificate chain to present based on arbitrary criteria: for example
1352 supported signature algorithms. Add very simple example to s_server.
1353 This fixes many of the problems and restrictions of the existing client
1354 certificate callback: for example you can now clear an existing
1355 certificate and specify the whole chain.
1358 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
1359 the certificate can be used for (if anything). Set valid_flags field
1360 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
1361 to have similar checks in it.
1363 Add new "cert_flags" field to CERT structure and include a "strict mode".
1364 This enforces some TLS certificate requirements (such as only permitting
1365 certificate signature algorithms contained in the supported algorithms
1366 extension) which some implementations ignore: this option should be used
1367 with caution as it could cause interoperability issues.
1370 *) Update and tidy signature algorithm extension processing. Work out
1371 shared signature algorithms based on preferences and peer algorithms
1372 and print them out in s_client and s_server. Abort handshake if no
1373 shared signature algorithms.
1376 *) Add new functions to allow customised supported signature algorithms
1377 for SSL and SSL_CTX structures. Add options to s_client and s_server
1381 *) New function SSL_certs_clear() to delete all references to certificates
1382 from an SSL structure. Before this once a certificate had been added
1383 it couldn't be removed.
1386 *) Integrate hostname, email address and IP address checking with certificate
1387 verification. New verify options supporting checking in opensl utility.
1390 *) Fixes and wildcard matching support to hostname and email checking
1391 functions. Add manual page.
1392 [Florian Weimer (Red Hat Product Security Team)]
1394 *) New functions to check a hostname email or IP address against a
1395 certificate. Add options x509 utility to print results of checks against
1399 *) Fix OCSP checking.
1400 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
1402 *) Initial experimental support for explicitly trusted non-root CAs.
1403 OpenSSL still tries to build a complete chain to a root but if an
1404 intermediate CA has a trust setting included that is used. The first
1405 setting is used: whether to trust (e.g., -addtrust option to the x509
1409 *) Add -trusted_first option which attempts to find certificates in the
1410 trusted store even if an untrusted chain is also supplied.
1413 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
1414 platform support for Linux and Android.
1417 *) Support for linux-x32, ILP32 environment in x86_64 framework.
1420 *) Experimental multi-implementation support for FIPS capable OpenSSL.
1421 When in FIPS mode the approved implementations are used as normal,
1422 when not in FIPS mode the internal unapproved versions are used instead.
1423 This means that the FIPS capable OpenSSL isn't forced to use the
1424 (often lower perfomance) FIPS implementations outside FIPS mode.
1427 *) Transparently support X9.42 DH parameters when calling
1428 PEM_read_bio_DHparameters. This means existing applications can handle
1429 the new parameter format automatically.
1432 *) Initial experimental support for X9.42 DH parameter format: mainly
1433 to support use of 'q' parameter for RFC5114 parameters.
1436 *) Add DH parameters from RFC5114 including test data to dhtest.
1439 *) Support for automatic EC temporary key parameter selection. If enabled
1440 the most preferred EC parameters are automatically used instead of
1441 hardcoded fixed parameters. Now a server just has to call:
1442 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
1443 support ECDH and use the most appropriate parameters.
1446 *) Enhance and tidy EC curve and point format TLS extension code. Use
1447 static structures instead of allocation if default values are used.
1448 New ctrls to set curves we wish to support and to retrieve shared curves.
1449 Print out shared curves in s_server. New options to s_server and s_client
1450 to set list of supported curves.
1453 *) New ctrls to retrieve supported signature algorithms and
1454 supported curve values as an array of NIDs. Extend openssl utility
1455 to print out received values.
1458 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
1459 between NIDs and the more common NIST names such as "P-256". Enhance
1460 ecparam utility and ECC method to recognise the NIST names for curves.
1463 *) Enhance SSL/TLS certificate chain handling to support different
1464 chains for each certificate instead of one chain in the parent SSL_CTX.
1467 *) Support for fixed DH ciphersuite client authentication: where both
1468 server and client use DH certificates with common parameters.
1471 *) Support for fixed DH ciphersuites: those requiring DH server
1475 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
1477 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
1478 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
1479 X509_CINF_get_signature were reverted post internal team review.
1481 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
1483 *) Build fixes for the Windows and OpenVMS platforms
1484 [Matt Caswell and Richard Levitte]
1486 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
1488 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
1489 message can cause a segmentation fault in OpenSSL due to a NULL pointer
1490 dereference. This could lead to a Denial Of Service attack. Thanks to
1491 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
1495 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
1496 dtls1_buffer_record function under certain conditions. In particular this
1497 could occur if an attacker sent repeated DTLS records with the same
1498 sequence number but for the next epoch. The memory leak could be exploited
1499 by an attacker in a Denial of Service attack through memory exhaustion.
1500 Thanks to Chris Mueller for reporting this issue.
1504 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
1505 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
1506 method would be set to NULL which could later result in a NULL pointer
1507 dereference. Thanks to Frank Schmirler for reporting this issue.
1511 *) Abort handshake if server key exchange message is omitted for ephemeral
1514 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
1515 reporting this issue.
1519 *) Remove non-export ephemeral RSA code on client and server. This code
1520 violated the TLS standard by allowing the use of temporary RSA keys in
1521 non-export ciphersuites and could be used by a server to effectively
1522 downgrade the RSA key length used to a value smaller than the server
1523 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
1524 INRIA or reporting this issue.
1528 *) Fixed issue where DH client certificates are accepted without verification.
1529 An OpenSSL server will accept a DH certificate for client authentication
1530 without the certificate verify message. This effectively allows a client to
1531 authenticate without the use of a private key. This only affects servers
1532 which trust a client certificate authority which issues certificates
1533 containing DH keys: these are extremely rare and hardly ever encountered.
1534 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
1539 *) Ensure that the session ID context of an SSL is updated when its
1540 SSL_CTX is updated via SSL_set_SSL_CTX.
1542 The session ID context is typically set from the parent SSL_CTX,
1543 and can vary with the CTX.
1546 *) Fix various certificate fingerprint issues.
1548 By using non-DER or invalid encodings outside the signed portion of a
1549 certificate the fingerprint can be changed without breaking the signature.
1550 Although no details of the signed portion of the certificate can be changed
1551 this can cause problems with some applications: e.g. those using the
1552 certificate fingerprint for blacklists.
1554 1. Reject signatures with non zero unused bits.
1556 If the BIT STRING containing the signature has non zero unused bits reject
1557 the signature. All current signature algorithms require zero unused bits.
1559 2. Check certificate algorithm consistency.
1561 Check the AlgorithmIdentifier inside TBS matches the one in the
1562 certificate signature. NB: this will result in signature failure
1563 errors for some broken certificates.
1565 Thanks to Konrad Kraszewski from Google for reporting this issue.
1567 3. Check DSA/ECDSA signatures use DER.
1569 Reencode DSA/ECDSA signatures and compare with the original received
1570 signature. Return an error if there is a mismatch.
1572 This will reject various cases including garbage after signature
1573 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
1574 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
1575 (negative or with leading zeroes).
1577 Further analysis was conducted and fixes were developed by Stephen Henson
1578 of the OpenSSL core team.
1583 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
1584 results on some platforms, including x86_64. This bug occurs at random
1585 with a very low probability, and is not known to be exploitable in any
1586 way, though its exact impact is difficult to determine. Thanks to Pieter
1587 Wuille (Blockstream) who reported this issue and also suggested an initial
1588 fix. Further analysis was conducted by the OpenSSL development team and
1589 Adam Langley of Google. The final fix was developed by Andy Polyakov of
1590 the OpenSSL core team.
1594 *) Do not resume sessions on the server if the negotiated protocol
1595 version does not match the session's version. Resuming with a different
1596 version, while not strictly forbidden by the RFC, is of questionable
1597 sanity and breaks all known clients.
1598 [David Benjamin, Emilia Käsper]
1600 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
1601 early CCS messages during renegotiation. (Note that because
1602 renegotiation is encrypted, this early CCS was not exploitable.)
1605 *) Tighten client-side session ticket handling during renegotiation:
1606 ensure that the client only accepts a session ticket if the server sends
1607 the extension anew in the ServerHello. Previously, a TLS client would
1608 reuse the old extension state and thus accept a session ticket if one was
1609 announced in the initial ServerHello.
1611 Similarly, ensure that the client requires a session ticket if one
1612 was advertised in the ServerHello. Previously, a TLS client would
1613 ignore a missing NewSessionTicket message.
1616 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
1618 *) SRTP Memory Leak.
1620 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
1621 sends a carefully crafted handshake message, to cause OpenSSL to fail
1622 to free up to 64k of memory causing a memory leak. This could be
1623 exploited in a Denial Of Service attack. This issue affects OpenSSL
1624 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
1625 whether SRTP is used or configured. Implementations of OpenSSL that
1626 have been compiled with OPENSSL_NO_SRTP defined are not affected.
1628 The fix was developed by the OpenSSL team.
1632 *) Session Ticket Memory Leak.
1634 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
1635 integrity of that ticket is first verified. In the event of a session
1636 ticket integrity check failing, OpenSSL will fail to free memory
1637 causing a memory leak. By sending a large number of invalid session
1638 tickets an attacker could exploit this issue in a Denial Of Service
1643 *) Build option no-ssl3 is incomplete.
1645 When OpenSSL is configured with "no-ssl3" as a build option, servers
1646 could accept and complete a SSL 3.0 handshake, and clients could be
1647 configured to send them.
1649 [Akamai and the OpenSSL team]
1651 *) Add support for TLS_FALLBACK_SCSV.
1652 Client applications doing fallback retries should call
1653 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
1655 [Adam Langley, Bodo Moeller]
1657 *) Add additional DigestInfo checks.
1659 Reencode DigestInto in DER and check against the original when
1660 verifying RSA signature: this will reject any improperly encoded
1661 DigestInfo structures.
1663 Note: this is a precautionary measure and no attacks are currently known.
1667 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
1669 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
1670 SRP code can be overrun an internal buffer. Add sanity check that
1671 g, A, B < N to SRP code.
1673 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
1674 Group for discovering this issue.
1678 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
1679 TLS 1.0 instead of higher protocol versions when the ClientHello message
1680 is badly fragmented. This allows a man-in-the-middle attacker to force a
1681 downgrade to TLS 1.0 even if both the server and the client support a
1682 higher protocol version, by modifying the client's TLS records.
1684 Thanks to David Benjamin and Adam Langley (Google) for discovering and
1685 researching this issue.
1689 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
1690 to a denial of service attack. A malicious server can crash the client
1691 with a null pointer dereference (read) by specifying an anonymous (EC)DH
1692 ciphersuite and sending carefully crafted handshake messages.
1694 Thanks to Felix Gröbert (Google) for discovering and researching this
1699 *) By sending carefully crafted DTLS packets an attacker could cause openssl
1700 to leak memory. This can be exploited through a Denial of Service attack.
1701 Thanks to Adam Langley for discovering and researching this issue.
1705 *) An attacker can force openssl to consume large amounts of memory whilst
1706 processing DTLS handshake messages. This can be exploited through a
1707 Denial of Service attack.
1708 Thanks to Adam Langley for discovering and researching this issue.
1712 *) An attacker can force an error condition which causes openssl to crash
1713 whilst processing DTLS packets due to memory being freed twice. This
1714 can be exploited through a Denial of Service attack.
1715 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
1720 *) If a multithreaded client connects to a malicious server using a resumed
1721 session and the server sends an ec point format extension it could write
1722 up to 255 bytes to freed memory.
1724 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
1729 *) A malicious server can crash an OpenSSL client with a null pointer
1730 dereference (read) by specifying an SRP ciphersuite even though it was not
1731 properly negotiated with the client. This can be exploited through a
1732 Denial of Service attack.
1734 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
1735 discovering and researching this issue.
1739 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
1740 X509_name_oneline, X509_name_print_ex et al. to leak some information
1741 from the stack. Applications may be affected if they echo pretty printing
1742 output to the attacker.
1744 Thanks to Ivan Fratric (Google) for discovering this issue.
1746 [Emilia Käsper, and Steve Henson]
1748 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
1749 for corner cases. (Certain input points at infinity could lead to
1750 bogus results, with non-infinity inputs mapped to infinity too.)
1753 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
1755 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
1756 handshake can force the use of weak keying material in OpenSSL
1757 SSL/TLS clients and servers.
1759 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
1760 researching this issue. (CVE-2014-0224)
1761 [KIKUCHI Masashi, Steve Henson]
1763 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
1764 OpenSSL DTLS client the code can be made to recurse eventually crashing
1767 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
1769 [Imre Rad, Steve Henson]
1771 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
1772 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
1773 client or server. This is potentially exploitable to run arbitrary
1774 code on a vulnerable client or server.
1776 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
1777 [Jüri Aedla, Steve Henson]
1779 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
1780 are subject to a denial of service attack.
1782 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
1783 this issue. (CVE-2014-3470)
1784 [Felix Gröbert, Ivan Fratric, Steve Henson]
1786 *) Harmonize version and its documentation. -f flag is used to display
1788 [mancha <mancha1@zoho.com>]
1790 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
1791 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
1792 [mancha <mancha1@zoho.com>]
1794 *) Fix some double frees. These are not thought to be exploitable.
1795 [mancha <mancha1@zoho.com>]
1797 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
1799 *) A missing bounds check in the handling of the TLS heartbeat extension
1800 can be used to reveal up to 64k of memory to a connected client or
1803 Thanks for Neel Mehta of Google Security for discovering this bug and to
1804 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
1805 preparing the fix (CVE-2014-0160)
1806 [Adam Langley, Bodo Moeller]
1808 *) Fix for the attack described in the paper "Recovering OpenSSL
1809 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
1810 by Yuval Yarom and Naomi Benger. Details can be obtained from:
1811 http://eprint.iacr.org/2014/140
1813 Thanks to Yuval Yarom and Naomi Benger for discovering this
1814 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
1815 [Yuval Yarom and Naomi Benger]
1817 *) TLS pad extension: draft-agl-tls-padding-03
1819 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
1820 TLS client Hello record length value would otherwise be > 255 and
1821 less that 512 pad with a dummy extension containing zeroes so it
1822 is at least 512 bytes long.
1824 [Adam Langley, Steve Henson]
1826 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
1828 *) Fix for TLS record tampering bug. A carefully crafted invalid
1829 handshake could crash OpenSSL with a NULL pointer exception.
1830 Thanks to Anton Johansson for reporting this issues.
1833 *) Keep original DTLS digest and encryption contexts in retransmission
1834 structures so we can use the previous session parameters if they need
1835 to be resent. (CVE-2013-6450)
1838 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
1839 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
1840 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
1841 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
1842 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
1843 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
1844 [Rob Stradling, Adam Langley]
1846 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
1848 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
1849 supporting platforms or when small records were transferred.
1850 [Andy Polyakov, Steve Henson]
1852 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
1854 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
1856 This addresses the flaw in CBC record processing discovered by
1857 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
1858 at: http://www.isg.rhul.ac.uk/tls/
1860 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1861 Security Group at Royal Holloway, University of London
1862 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
1863 Emilia Käsper for the initial patch.
1865 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
1867 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
1868 ciphersuites which can be exploited in a denial of service attack.
1869 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
1870 and detecting this bug and to Wolfgang Ettlinger
1871 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
1875 *) Return an error when checking OCSP signatures when key is NULL.
1876 This fixes a DoS attack. (CVE-2013-0166)
1879 *) Make openssl verify return errors.
1880 [Chris Palmer <palmer@google.com> and Ben Laurie]
1882 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
1883 the right response is stapled. Also change SSL_get_certificate()
1884 so it returns the certificate actually sent.
1885 See http://rt.openssl.org/Ticket/Display.html?id=2836.
1886 [Rob Stradling <rob.stradling@comodo.com>]
1888 *) Fix possible deadlock when decoding public keys.
1891 *) Don't use TLS 1.0 record version number in initial client hello
1895 Changes between 1.0.1b and 1.0.1c [10 May 2012]
1897 *) Sanity check record length before skipping explicit IV in TLS
1898 1.2, 1.1 and DTLS to fix DoS attack.
1900 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1901 fuzzing as a service testing platform.
1905 *) Initialise tkeylen properly when encrypting CMS messages.
1906 Thanks to Solar Designer of Openwall for reporting this issue.
1909 *) In FIPS mode don't try to use composite ciphers as they are not
1913 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
1915 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
1916 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
1917 mean any application compiled against OpenSSL 1.0.0 headers setting
1918 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
1919 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
1920 0x10000000L Any application which was previously compiled against
1921 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
1922 will need to be recompiled as a result. Letting be results in
1923 inability to disable specifically TLS 1.1 and in client context,
1924 in unlike event, limit maximum offered version to TLS 1.0 [see below].
1927 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
1928 disable just protocol X, but all protocols above X *if* there are
1929 protocols *below* X still enabled. In more practical terms it means
1930 that if application wants to disable TLS1.0 in favor of TLS1.1 and
1931 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
1932 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
1936 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
1938 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1939 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1940 in CRYPTO_realloc_clean.
1942 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1943 issue and to Adam Langley <agl@chromium.org> for fixing it.
1945 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1947 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
1950 *) Workarounds for some broken servers that "hang" if a client hello
1951 record length exceeds 255 bytes.
1953 1. Do not use record version number > TLS 1.0 in initial client
1954 hello: some (but not all) hanging servers will now work.
1955 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
1956 the number of ciphers sent in the client hello. This should be
1957 set to an even number, such as 50, for example by passing:
1958 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
1959 Most broken servers should now work.
1960 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
1961 TLS 1.2 client support entirely.
1964 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
1967 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
1969 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
1970 STRING form instead of a DigestInfo.
1973 *) The format used for MDC2 RSA signatures is inconsistent between EVP
1974 and the RSA_sign/RSA_verify functions. This was made more apparent when
1975 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
1976 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
1977 the correct format in RSA_verify so both forms transparently work.
1980 *) Some servers which support TLS 1.0 can choke if we initially indicate
1981 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
1982 encrypted premaster secret. As a workaround use the maximum pemitted
1983 client version in client hello, this should keep such servers happy
1984 and still work with previous versions of OpenSSL.
1987 *) Add support for TLS/DTLS heartbeats.
1988 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1990 *) Add support for SCTP.
1991 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1993 *) Improved PRNG seeding for VOS.
1994 [Paul Green <Paul.Green@stratus.com>]
1996 *) Extensive assembler packs updates, most notably:
1998 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
1999 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
2000 - x86_64: bit-sliced AES implementation;
2001 - ARM: NEON support, contemporary platforms optimizations;
2002 - s390x: z196 support;
2003 - *: GHASH and GF(2^m) multiplication implementations;
2007 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
2008 (removal of unnecessary code)
2009 [Peter Sylvester <peter.sylvester@edelweb.fr>]
2011 *) Add TLS key material exporter from RFC 5705.
2014 *) Add DTLS-SRTP negotiation from RFC 5764.
2017 *) Add Next Protocol Negotiation,
2018 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
2019 disabled with a no-npn flag to config or Configure. Code donated
2021 [Adam Langley <agl@google.com> and Ben Laurie]
2023 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
2024 NIST-P256, NIST-P521, with constant-time single point multiplication on
2025 typical inputs. Compiler support for the nonstandard type __uint128_t is
2026 required to use this (present in gcc 4.4 and later, for 64-bit builds).
2027 Code made available under Apache License version 2.0.
2029 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
2030 line to include this in your build of OpenSSL, and run "make depend" (or
2031 "make update"). This enables the following EC_METHODs:
2033 EC_GFp_nistp224_method()
2034 EC_GFp_nistp256_method()
2035 EC_GFp_nistp521_method()
2037 EC_GROUP_new_by_curve_name() will automatically use these (while
2038 EC_GROUP_new_curve_GFp() currently prefers the more flexible
2040 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
2042 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
2043 all platforms. Move ssize_t definition from e_os.h to the public
2044 header file e_os2.h as it now appears in public header file cms.h
2047 *) New -sigopt option to the ca, req and x509 utilities. Additional
2048 signature parameters can be passed using this option and in
2052 *) Add RSA PSS signing function. This will generate and set the
2053 appropriate AlgorithmIdentifiers for PSS based on those in the
2054 corresponding EVP_MD_CTX structure. No application support yet.
2057 *) Support for companion algorithm specific ASN1 signing routines.
2058 New function ASN1_item_sign_ctx() signs a pre-initialised
2059 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
2060 the appropriate parameters.
2063 *) Add new algorithm specific ASN1 verification initialisation function
2064 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
2065 handling will be the same no matter what EVP_PKEY_METHOD is used.
2066 Add a PSS handler to support verification of PSS signatures: checked
2067 against a number of sample certificates.
2070 *) Add signature printing for PSS. Add PSS OIDs.
2071 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
2073 *) Add algorithm specific signature printing. An individual ASN1 method
2074 can now print out signatures instead of the standard hex dump.
2076 More complex signatures (e.g. PSS) can print out more meaningful
2077 information. Include DSA version that prints out the signature
2081 *) Password based recipient info support for CMS library: implementing
2085 *) Split password based encryption into PBES2 and PBKDF2 functions. This
2086 neatly separates the code into cipher and PBE sections and is required
2087 for some algorithms that split PBES2 into separate pieces (such as
2088 password based CMS).
2091 *) Session-handling fixes:
2092 - Fix handling of connections that are resuming with a session ID,
2093 but also support Session Tickets.
2094 - Fix a bug that suppressed issuing of a new ticket if the client
2095 presented a ticket with an expired session.
2096 - Try to set the ticket lifetime hint to something reasonable.
2097 - Make tickets shorter by excluding irrelevant information.
2098 - On the client side, don't ignore renewed tickets.
2099 [Adam Langley, Bodo Moeller (Google)]
2101 *) Fix PSK session representation.
2104 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
2106 This work was sponsored by Intel.
2109 *) Add GCM support to TLS library. Some custom code is needed to split
2110 the IV between the fixed (from PRF) and explicit (from TLS record)
2111 portions. This adds all GCM ciphersuites supported by RFC5288 and
2112 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
2113 add a special AESGCM string for GCM only.
2116 *) Expand range of ctrls for AES GCM. Permit setting invocation
2117 field on decrypt and retrieval of invocation field only on encrypt.
2120 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
2121 As required by RFC5289 these ciphersuites cannot be used if for
2122 versions of TLS earlier than 1.2.
2125 *) For FIPS capable OpenSSL interpret a NULL default public key method
2126 as unset and return the appopriate default but do *not* set the default.
2127 This means we can return the appopriate method in applications that
2128 swicth between FIPS and non-FIPS modes.
2131 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
2132 ENGINE is used then we cannot handle that in the FIPS module so we
2133 keep original code iff non-FIPS operations are allowed.
2136 *) Add -attime option to openssl utilities.
2137 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
2139 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
2142 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
2143 FIPS EC methods unconditionally for now.
2146 *) New build option no-ec2m to disable characteristic 2 code.
2149 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
2150 all cases can be covered as some introduce binary incompatibilities.
2153 *) Redirect RSA operations to FIPS module including keygen,
2154 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
2157 *) Add similar low level API blocking to ciphers.
2160 *) Low level digest APIs are not approved in FIPS mode: any attempt
2161 to use these will cause a fatal error. Applications that *really* want
2162 to use them can use the private_* version instead.
2165 *) Redirect cipher operations to FIPS module for FIPS builds.
2168 *) Redirect digest operations to FIPS module for FIPS builds.
2171 *) Update build system to add "fips" flag which will link in fipscanister.o
2172 for static and shared library builds embedding a signature if needed.
2175 *) Output TLS supported curves in preference order instead of numerical
2176 order. This is currently hardcoded for the highest order curves first.
2177 This should be configurable so applications can judge speed vs strength.
2180 *) Add TLS v1.2 server support for client authentication.
2183 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
2187 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
2188 FIPS modules versions.
2191 *) Add TLS v1.2 client side support for client authentication. Keep cache
2192 of handshake records longer as we don't know the hash algorithm to use
2193 until after the certificate request message is received.
2196 *) Initial TLS v1.2 client support. Add a default signature algorithms
2197 extension including all the algorithms we support. Parse new signature
2198 format in client key exchange. Relax some ECC signing restrictions for
2199 TLS v1.2 as indicated in RFC5246.
2202 *) Add server support for TLS v1.2 signature algorithms extension. Switch
2203 to new signature format when needed using client digest preference.
2204 All server ciphersuites should now work correctly in TLS v1.2. No client
2205 support yet and no support for client certificates.
2208 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
2209 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
2210 ciphersuites. At present only RSA key exchange ciphersuites work with
2211 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
2212 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
2213 and version checking.
2216 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
2217 with this defined it will not be affected by any changes to ssl internal
2218 structures. Add several utility functions to allow openssl application
2219 to work with OPENSSL_NO_SSL_INTERN defined.
2222 *) A long standing patch to add support for SRP from EdelWeb (Peter
2223 Sylvester and Christophe Renou) was integrated.
2224 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
2225 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
2228 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
2231 *) Permit abbreviated handshakes when renegotiating using the function
2232 SSL_renegotiate_abbreviated().
2233 [Robin Seggelmann <seggelmann@fh-muenster.de>]
2235 *) Add call to ENGINE_register_all_complete() to
2236 ENGINE_load_builtin_engines(), so some implementations get used
2237 automatically instead of needing explicit application support.
2240 *) Add support for TLS key exporter as described in RFC5705.
2241 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
2243 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
2244 a few changes are required:
2246 Add SSL_OP_NO_TLSv1_1 flag.
2247 Add TLSv1_1 methods.
2248 Update version checking logic to handle version 1.1.
2249 Add explicit IV handling (ported from DTLS code).
2250 Add command line options to s_client/s_server.
2253 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
2255 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
2256 in CMS and PKCS7 code. When RSA decryption fails use a random key for
2257 content decryption and always return the same error. Note: this attack
2258 needs on average 2^20 messages so it only affects automated senders. The
2259 old behaviour can be reenabled in the CMS code by setting the
2260 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
2261 an MMA defence is not necessary.
2262 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
2263 this issue. (CVE-2012-0884)
2266 *) Fix CVE-2011-4619: make sure we really are receiving a
2267 client hello before rejecting multiple SGC restarts. Thanks to
2268 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
2271 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
2273 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
2274 Thanks to Antonio Martin, Enterprise Secure Access Research and
2275 Development, Cisco Systems, Inc. for discovering this bug and
2276 preparing a fix. (CVE-2012-0050)
2279 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
2281 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
2282 of the Vaudenay padding oracle attack on CBC mode encryption
2283 which enables an efficient plaintext recovery attack against
2284 the OpenSSL implementation of DTLS. Their attack exploits timing
2285 differences arising during decryption processing. A research
2286 paper describing this attack can be found at:
2287 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
2288 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2289 Security Group at Royal Holloway, University of London
2290 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
2291 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
2292 for preparing the fix. (CVE-2011-4108)
2293 [Robin Seggelmann, Michael Tuexen]
2295 *) Clear bytes used for block padding of SSL 3.0 records.
2297 [Adam Langley (Google)]
2299 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
2300 Kadianakis <desnacked@gmail.com> for discovering this issue and
2301 Adam Langley for preparing the fix. (CVE-2011-4619)
2302 [Adam Langley (Google)]
2304 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
2305 [Andrey Kulikov <amdeich@gmail.com>]
2307 *) Prevent malformed RFC3779 data triggering an assertion failure.
2308 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
2309 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
2310 [Rob Austein <sra@hactrn.net>]
2312 *) Improved PRNG seeding for VOS.
2313 [Paul Green <Paul.Green@stratus.com>]
2315 *) Fix ssl_ciph.c set-up race.
2316 [Adam Langley (Google)]
2318 *) Fix spurious failures in ecdsatest.c.
2319 [Emilia Käsper (Google)]
2321 *) Fix the BIO_f_buffer() implementation (which was mixing different
2322 interpretations of the '..._len' fields).
2323 [Adam Langley (Google)]
2325 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
2326 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
2327 threads won't reuse the same blinding coefficients.
2329 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
2330 lock to call BN_BLINDING_invert_ex, and avoids one use of
2331 BN_BLINDING_update for each BN_BLINDING structure (previously,
2332 the last update always remained unused).
2333 [Emilia Käsper (Google)]
2335 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
2336 [Bob Buckholz (Google)]
2338 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
2340 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
2341 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
2342 [Kaspar Brand <ossl@velox.ch>]
2344 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
2345 for multi-threaded use of ECDH. (CVE-2011-3210)
2346 [Adam Langley (Google)]
2348 *) Fix x509_name_ex_d2i memory leak on bad inputs.
2351 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
2352 signature public key algorithm by using OID xref utilities instead.
2353 Before this you could only use some ECC ciphersuites with SHA1 only.
2356 *) Add protection against ECDSA timing attacks as mentioned in the paper
2357 by Billy Bob Brumley and Nicola Tuveri, see:
2359 http://eprint.iacr.org/2011/232.pdf
2361 [Billy Bob Brumley and Nicola Tuveri]
2363 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
2365 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
2366 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
2368 *) Fix bug in string printing code: if *any* escaping is enabled we must
2369 escape the escape character (backslash) or the resulting string is
2373 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
2375 *) Disable code workaround for ancient and obsolete Netscape browsers
2376 and servers: an attacker can use it in a ciphersuite downgrade attack.
2377 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
2380 *) Fixed J-PAKE implementation error, originally discovered by
2381 Sebastien Martini, further info and confirmation from Stefan
2382 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
2385 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
2387 *) Fix extension code to avoid race conditions which can result in a buffer
2388 overrun vulnerability: resumed sessions must not be modified as they can
2389 be shared by multiple threads. CVE-2010-3864
2392 *) Fix WIN32 build system to correctly link an ENGINE directory into
2396 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
2398 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
2400 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
2402 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
2404 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
2405 context. The operation can be customised via the ctrl mechanism in
2406 case ENGINEs want to include additional functionality.
2409 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
2412 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
2413 output hashes compatible with older versions of OpenSSL.
2414 [Willy Weisz <weisz@vcpc.univie.ac.at>]
2416 *) Fix compression algorithm handling: if resuming a session use the
2417 compression algorithm of the resumed session instead of determining
2418 it from client hello again. Don't allow server to change algorithm.
2421 *) Add load_crls() function to apps tidying load_certs() too. Add option
2422 to verify utility to allow additional CRLs to be included.
2425 *) Update OCSP request code to permit adding custom headers to the request:
2426 some responders need this.
2429 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
2431 [Julia Lawall <julia@diku.dk>]
2433 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
2434 needlessly dereferenced structures, used obsolete functions and
2435 didn't handle all updated verify codes correctly.
2438 *) Disable MD2 in the default configuration.
2441 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
2442 indicate the initial BIO being pushed or popped. This makes it possible
2443 to determine whether the BIO is the one explicitly called or as a result
2444 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
2445 it handles reference counts correctly and doesn't zero out the I/O bio
2446 when it is not being explicitly popped. WARNING: applications which
2447 included workarounds for the old buggy behaviour will need to be modified
2448 or they could free up already freed BIOs.
2451 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
2452 renaming to all platforms (within the 0.9.8 branch, this was
2453 done conditionally on Netware platforms to avoid a name clash).
2454 [Guenter <lists@gknw.net>]
2456 *) Add ECDHE and PSK support to DTLS.
2457 [Michael Tuexen <tuexen@fh-muenster.de>]
2459 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
2463 *) Add "missing" function EVP_MD_flags() (without this the only way to
2464 retrieve a digest flags is by accessing the structure directly. Update
2465 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
2466 or cipher is registered as in the "from" argument. Print out all
2467 registered digests in the dgst usage message instead of manually
2468 attempting to work them out.
2471 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
2472 this allows the use of compression and extensions. Change default cipher
2473 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
2474 by default unless an application cipher string requests it.
2477 *) Alter match criteria in PKCS12_parse(). It used to try to use local
2478 key ids to find matching certificates and keys but some PKCS#12 files
2479 don't follow the (somewhat unwritten) rules and this strategy fails.
2480 Now just gather all certificates together and the first private key
2481 then look for the first certificate that matches the key.
2484 *) Support use of registered digest and cipher names for dgst and cipher
2485 commands instead of having to add each one as a special case. So now
2492 openssl dgst -sha256 foo
2494 and this works for ENGINE based algorithms too.
2498 *) Update Gost ENGINE to support parameter files.
2499 [Victor B. Wagner <vitus@cryptocom.ru>]
2501 *) Support GeneralizedTime in ca utility.
2502 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
2504 *) Enhance the hash format used for certificate directory links. The new
2505 form uses the canonical encoding (meaning equivalent names will work
2506 even if they aren't identical) and uses SHA1 instead of MD5. This form
2507 is incompatible with the older format and as a result c_rehash should
2508 be used to rebuild symbolic links.
2511 *) Make PKCS#8 the default write format for private keys, replacing the
2512 traditional format. This form is standardised, more secure and doesn't
2513 include an implicit MD5 dependency.
2516 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
2517 committed to OpenSSL should pass this lot as a minimum.
2520 *) Add session ticket override functionality for use by EAP-FAST.
2521 [Jouni Malinen <j@w1.fi>]
2523 *) Modify HMAC functions to return a value. Since these can be implemented
2524 in an ENGINE errors can occur.
2527 *) Type-checked OBJ_bsearch_ex.
2530 *) Type-checked OBJ_bsearch. Also some constification necessitated
2531 by type-checking. Still to come: TXT_DB, bsearch(?),
2532 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
2536 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
2537 seconds to a tm structure directly, instead of going through OS
2538 specific date routines. This avoids any issues with OS routines such
2539 as the year 2038 bug. New *_adj() functions for ASN1 time structures
2540 and X509_time_adj_ex() to cover the extended range. The existing
2541 X509_time_adj() is still usable and will no longer have any date issues.
2544 *) Delta CRL support. New use deltas option which will attempt to locate
2545 and search any appropriate delta CRLs available.
2547 This work was sponsored by Google.
2550 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
2551 code and add additional score elements. Validate alternate CRL paths
2552 as part of the CRL checking and indicate a new error "CRL path validation
2553 error" in this case. Applications wanting additional details can use
2554 the verify callback and check the new "parent" field. If this is not
2555 NULL CRL path validation is taking place. Existing applications wont
2556 see this because it requires extended CRL support which is off by
2559 This work was sponsored by Google.
2562 *) Support for freshest CRL extension.
2564 This work was sponsored by Google.
2567 *) Initial indirect CRL support. Currently only supported in the CRLs
2568 passed directly and not via lookup. Process certificate issuer
2569 CRL entry extension and lookup CRL entries by bother issuer name
2570 and serial number. Check and process CRL issuer entry in IDP extension.
2572 This work was sponsored by Google.
2575 *) Add support for distinct certificate and CRL paths. The CRL issuer
2576 certificate is validated separately in this case. Only enabled if
2577 an extended CRL support flag is set: this flag will enable additional
2578 CRL functionality in future.
2580 This work was sponsored by Google.
2583 *) Add support for policy mappings extension.
2585 This work was sponsored by Google.
2588 *) Fixes to pathlength constraint, self issued certificate handling,
2589 policy processing to align with RFC3280 and PKITS tests.
2591 This work was sponsored by Google.
2594 *) Support for name constraints certificate extension. DN, email, DNS
2595 and URI types are currently supported.
2597 This work was sponsored by Google.
2600 *) To cater for systems that provide a pointer-based thread ID rather
2601 than numeric, deprecate the current numeric thread ID mechanism and
2602 replace it with a structure and associated callback type. This
2603 mechanism allows a numeric "hash" to be extracted from a thread ID in
2604 either case, and on platforms where pointers are larger than 'long',
2605 mixing is done to help ensure the numeric 'hash' is usable even if it
2606 can't be guaranteed unique. The default mechanism is to use "&errno"
2607 as a pointer-based thread ID to distinguish between threads.
2609 Applications that want to provide their own thread IDs should now use
2610 CRYPTO_THREADID_set_callback() to register a callback that will call
2611 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
2613 Note that ERR_remove_state() is now deprecated, because it is tied
2614 to the assumption that thread IDs are numeric. ERR_remove_state(0)
2615 to free the current thread's error state should be replaced by
2616 ERR_remove_thread_state(NULL).
2618 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
2619 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
2620 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
2621 application was previously providing a numeric thread callback that
2622 was inappropriate for distinguishing threads, then uniqueness might
2623 have been obtained with &errno that happened immediately in the
2624 intermediate development versions of OpenSSL; this is no longer the
2625 case, the numeric thread callback will now override the automatic use
2627 [Geoff Thorpe, with help from Bodo Moeller]
2629 *) Initial support for different CRL issuing certificates. This covers a
2630 simple case where the self issued certificates in the chain exist and
2631 the real CRL issuer is higher in the existing chain.
2633 This work was sponsored by Google.
2636 *) Removed effectively defunct crypto/store from the build.
2639 *) Revamp of STACK to provide stronger type-checking. Still to come:
2640 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
2641 ASN1_STRING, CONF_VALUE.
2644 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
2645 RAM on SSL connections. This option can save about 34k per idle SSL.
2648 *) Revamp of LHASH to provide stronger type-checking. Still to come:
2649 STACK, TXT_DB, bsearch, qsort.
2652 *) Initial support for Cryptographic Message Syntax (aka CMS) based
2653 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
2654 support for data, signedData, compressedData, digestedData and
2655 encryptedData, envelopedData types included. Scripts to check against
2656 RFC4134 examples draft and interop and consistency checks of many
2657 content types and variants.
2660 *) Add options to enc utility to support use of zlib compression BIO.
2663 *) Extend mk1mf to support importing of options and assembly language
2664 files from Configure script, currently only included in VC-WIN32.
2665 The assembly language rules can now optionally generate the source
2666 files from the associated perl scripts.
2669 *) Implement remaining functionality needed to support GOST ciphersuites.
2670 Interop testing has been performed using CryptoPro implementations.
2671 [Victor B. Wagner <vitus@cryptocom.ru>]
2673 *) s390x assembler pack.
2676 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
2680 *) Implement Opaque PRF Input TLS extension as specified in
2681 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
2682 official specification yet and no extension type assignment by
2683 IANA exists, this extension (for now) will have to be explicitly
2684 enabled when building OpenSSL by providing the extension number
2685 to use. For example, specify an option
2687 -DTLSEXT_TYPE_opaque_prf_input=0x9527
2689 to the "config" or "Configure" script to enable the extension,
2690 assuming extension number 0x9527 (which is a completely arbitrary
2691 and unofficial assignment based on the MD5 hash of the Internet
2692 Draft). Note that by doing so, you potentially lose
2693 interoperability with other TLS implementations since these might
2694 be using the same extension number for other purposes.
2696 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
2697 opaque PRF input value to use in the handshake. This will create
2698 an interal copy of the length-'len' string at 'src', and will
2699 return non-zero for success.
2701 To get more control and flexibility, provide a callback function
2704 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
2705 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
2709 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
2712 Callback function 'cb' will be called in handshakes, and is
2713 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
2714 Argument 'arg' is for application purposes (the value as given to
2715 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
2716 be provided to the callback function). The callback function
2717 has to return non-zero to report success: usually 1 to use opaque
2718 PRF input just if possible, or 2 to enforce use of the opaque PRF
2719 input. In the latter case, the library will abort the handshake
2720 if opaque PRF input is not successfully negotiated.
2722 Arguments 'peerinput' and 'len' given to the callback function
2723 will always be NULL and 0 in the case of a client. A server will
2724 see the client's opaque PRF input through these variables if
2725 available (NULL and 0 otherwise). Note that if the server
2726 provides an opaque PRF input, the length must be the same as the
2727 length of the client's opaque PRF input.
2729 Note that the callback function will only be called when creating
2730 a new session (session resumption can resume whatever was
2731 previously negotiated), and will not be called in SSL 2.0
2732 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
2733 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
2734 for applications that need to enforce opaque PRF input.
2738 *) Update ssl code to support digests other than SHA1+MD5 for handshake
2741 [Victor B. Wagner <vitus@cryptocom.ru>]
2743 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2744 RFC4507bis. The encrypted ticket format is an encrypted encoded
2745 SSL_SESSION structure, that way new session features are automatically
2748 If a client application caches session in an SSL_SESSION structure
2749 support is transparent because tickets are now stored in the encoded
2752 The SSL_CTX structure automatically generates keys for ticket
2753 protection in servers so again support should be possible
2754 with no application modification.
2756 If a client or server wishes to disable RFC4507 support then the option
2757 SSL_OP_NO_TICKET can be set.
2759 Add a TLS extension debugging callback to allow the contents of any client
2760 or server extensions to be examined.
2762 This work was sponsored by Google.
2765 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
2766 OpenSSL should now compile cleanly on gcc 4.2
2767 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
2769 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
2770 support including streaming MAC support: this is required for GOST
2771 ciphersuite support.
2772 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
2774 *) Add option -stream to use PKCS#7 streaming in smime utility. New
2775 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
2776 to output in BER and PEM format.
2779 *) Experimental support for use of HMAC via EVP_PKEY interface. This
2780 allows HMAC to be handled via the EVP_DigestSign*() interface. The
2781 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
2782 ENGINE support for HMAC keys which are unextractable. New -mac and
2783 -macopt options to dgst utility.
2786 *) New option -sigopt to dgst utility. Update dgst to use
2787 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
2788 alternative signing paramaters such as X9.31 or PSS in the dgst
2792 *) Change ssl_cipher_apply_rule(), the internal function that does
2793 the work each time a ciphersuite string requests enabling
2794 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
2795 removing ("!foo+bar") a class of ciphersuites: Now it maintains
2796 the order of disabled ciphersuites such that those ciphersuites
2797 that most recently went from enabled to disabled not only stay
2798 in order with respect to each other, but also have higher priority
2799 than other disabled ciphersuites the next time ciphersuites are
2802 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
2803 the same ciphersuites as with "HIGH" alone, but in a specific
2804 order where the PSK ciphersuites come first (since they are the
2805 most recently disabled ciphersuites when "HIGH" is parsed).
2807 Also, change ssl_create_cipher_list() (using this new
2808 funcionality) such that between otherwise identical
2809 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
2813 *) Change ssl_create_cipher_list() so that it automatically
2814 arranges the ciphersuites in reasonable order before starting
2815 to process the rule string. Thus, the definition for "DEFAULT"
2816 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
2817 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
2818 This makes it much easier to arrive at a reasonable default order
2819 in applications for which anonymous ciphers are OK (meaning
2820 that you can't actually use DEFAULT).
2821 [Bodo Moeller; suggested by Victor Duchovni]
2823 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
2824 processing) into multiple integers instead of setting
2825 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
2826 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
2827 (These masks as well as the individual bit definitions are hidden
2828 away into the non-exported interface ssl/ssl_locl.h, so this
2829 change to the definition of the SSL_CIPHER structure shouldn't
2830 affect applications.) This give us more bits for each of these
2831 categories, so there is no longer a need to coagulate AES128 and
2832 AES256 into a single algorithm bit, and to coagulate Camellia128
2833 and Camellia256 into a single algorithm bit, which has led to all
2836 Thus, among other things, the kludge introduced in 0.9.7m and
2837 0.9.8e for masking out AES256 independently of AES128 or masking
2838 out Camellia256 independently of AES256 is not needed here in 0.9.9.
2840 With the change, we also introduce new ciphersuite aliases that
2841 so far were missing: "AES128", "AES256", "CAMELLIA128", and
2845 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
2846 Use the leftmost N bytes of the signature input if the input is
2847 larger than the prime q (with N being the size in bytes of q).
2850 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
2851 it yet and it is largely untested.
2854 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
2857 *) Initial incomplete changes to avoid need for function casts in OpenSSL
2858 some compilers (gcc 4.2 and later) reject their use. Safestack is
2859 reimplemented. Update ASN1 to avoid use of legacy functions.
2862 *) Win32/64 targets are linked with Winsock2.
2865 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
2866 to external functions. This can be used to increase CRL handling
2867 efficiency especially when CRLs are very large by (for example) storing
2868 the CRL revoked certificates in a database.
2871 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
2872 new CRLs added to a directory can be used. New command line option
2873 -verify_return_error to s_client and s_server. This causes real errors
2874 to be returned by the verify callback instead of carrying on no matter
2875 what. This reflects the way a "real world" verify callback would behave.
2878 *) GOST engine, supporting several GOST algorithms and public key formats.
2879 Kindly donated by Cryptocom.
2882 *) Partial support for Issuing Distribution Point CRL extension. CRLs
2883 partitioned by DP are handled but no indirect CRL or reason partitioning
2884 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
2885 selected via a scoring technique which handles IDP and AKID in CRLs.
2888 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
2889 will ultimately be used for all verify operations: this will remove the
2890 X509_STORE dependency on certificate verification and allow alternative
2891 lookup methods. X509_STORE based implementations of these two callbacks.
2894 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
2895 Modify get_crl() to find a valid (unexpired) CRL if possible.
2898 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
2899 this would be called X509_CRL_cmp() but that name is already used by
2900 a function that just compares CRL issuer names. Cache several CRL
2901 extensions in X509_CRL structure and cache CRLDP in X509.
2904 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
2905 this maps equivalent X509_NAME structures into a consistent structure.
2906 Name comparison can then be performed rapidly using memcmp().
2909 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
2913 *) Allow digests to supply their own micalg string for S/MIME type using
2914 the ctrl EVP_MD_CTRL_MICALG.
2917 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
2918 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
2919 ctrl. It can then customise the structure before and/or after signing
2923 *) New function OBJ_add_sigid() to allow application defined signature OIDs
2924 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
2925 to free up any added signature OIDs.
2928 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
2929 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
2930 digest and cipher tables. New options added to openssl utility:
2931 list-message-digest-algorithms and list-cipher-algorithms.
2934 *) Change the array representation of binary polynomials: the list
2935 of degrees of non-zero coefficients is now terminated with -1.
2936 Previously it was terminated with 0, which was also part of the
2937 value; thus, the array representation was not applicable to
2938 polynomials where t^0 has coefficient zero. This change makes
2939 the array representation useful in a more general context.
2942 *) Various modifications and fixes to SSL/TLS cipher string
2943 handling. For ECC, the code now distinguishes between fixed ECDH
2944 with RSA certificates on the one hand and with ECDSA certificates
2945 on the other hand, since these are separate ciphersuites. The
2946 unused code for Fortezza ciphersuites has been removed.
2948 For consistency with EDH, ephemeral ECDH is now called "EECDH"
2949 (not "ECDHE"). For consistency with the code for DH
2950 certificates, use of ECDH certificates is now considered ECDH
2951 authentication, not RSA or ECDSA authentication (the latter is
2952 merely the CA's signing algorithm and not actively used in the
2955 The temporary ciphersuite alias "ECCdraft" is no longer
2956 available, and ECC ciphersuites are no longer excluded from "ALL"
2957 and "DEFAULT". The following aliases now exist for RFC 4492
2958 ciphersuites, most of these by analogy with the DH case:
2960 kECDHr - ECDH cert, signed with RSA
2961 kECDHe - ECDH cert, signed with ECDSA
2962 kECDH - ECDH cert (signed with either RSA or ECDSA)
2963 kEECDH - ephemeral ECDH
2964 ECDH - ECDH cert or ephemeral ECDH
2970 AECDH - anonymous ECDH
2971 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
2975 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
2976 Use correct micalg parameters depending on digest(s) in signed message.
2979 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
2980 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
2983 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
2984 an engine to register a method. Add ENGINE lookups for methods and
2985 functional reference processing.
2988 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
2989 EVP_{Sign,Verify}* which allow an application to customise the signature
2993 *) New -resign option to smime utility. This adds one or more signers
2994 to an existing PKCS#7 signedData structure. Also -md option to use an
2995 alternative message digest algorithm for signing.
2998 *) Tidy up PKCS#7 routines and add new functions to make it easier to
2999 create PKCS7 structures containing multiple signers. Update smime
3000 application to support multiple signers.
3003 *) New -macalg option to pkcs12 utility to allow setting of an alternative
3007 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
3008 Reorganize PBE internals to lookup from a static table using NIDs,
3009 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
3010 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
3011 PRF which will be automatically used with PBES2.
3014 *) Replace the algorithm specific calls to generate keys in "req" with the
3018 *) Update PKCS#7 enveloped data routines to use new API. This is now
3019 supported by any public key method supporting the encrypt operation. A
3020 ctrl is added to allow the public key algorithm to examine or modify
3021 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
3025 *) Add a ctrl to asn1 method to allow a public key algorithm to express
3026 a default digest type to use. In most cases this will be SHA1 but some
3027 algorithms (such as GOST) need to specify an alternative digest. The
3028 return value indicates how strong the prefernce is 1 means optional and
3029 2 is mandatory (that is it is the only supported type). Modify
3030 ASN1_item_sign() to accept a NULL digest argument to indicate it should
3031 use the default md. Update openssl utilities to use the default digest
3032 type for signing if it is not explicitly indicated.
3035 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
3036 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
3037 signing method from the key type. This effectively removes the link
3038 between digests and public key types.
3041 *) Add an OID cross reference table and utility functions. Its purpose is to
3042 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
3043 rsaEncryption. This will allow some of the algorithm specific hackery
3044 needed to use the correct OID to be removed.
3047 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
3048 structures for PKCS7_sign(). They are now set up by the relevant public
3052 *) Add provisional EC pkey method with support for ECDSA and ECDH.
3055 *) Add support for key derivation (agreement) in the API, DH method and
3059 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
3060 public and private key formats. As a side effect these add additional
3061 command line functionality not previously available: DSA signatures can be
3062 generated and verified using pkeyutl and DH key support and generation in
3067 [Oliver Tappe <zooey@hirschkaefer.de>]
3069 *) New make target "install_html_docs" installs HTML renditions of the
3071 [Oliver Tappe <zooey@hirschkaefer.de>]
3073 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
3074 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
3075 support key and parameter generation and add initial key generation
3076 functionality for RSA.
3079 *) Add functions for main EVP_PKEY_method operations. The undocumented
3080 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
3081 EVP_PKEY_{encrypt,decrypt}_old.
3084 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
3085 key API, doesn't do much yet.
3088 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
3089 public key algorithms. New option to openssl utility:
3090 "list-public-key-algorithms" to print out info.
3093 *) Implement the Supported Elliptic Curves Extension for
3094 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
3097 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
3098 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
3101 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
3102 utilities such as rsa, dsa, dsaparam etc except they process any key
3106 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
3107 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
3108 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
3112 *) Initial support for pluggable public key ASN1.
3113 De-spaghettify the public key ASN1 handling. Move public and private
3114 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
3115 algorithm specific handling to a single module within the relevant
3116 algorithm directory. Add functions to allow (near) opaque processing
3117 of public and private key structures.
3120 *) Implement the Supported Point Formats Extension for
3121 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
3124 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
3125 for the psk identity [hint] and the psk callback functions to the
3126 SSL_SESSION, SSL and SSL_CTX structure.
3129 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
3133 SSL_CTX_use_psk_identity_hint
3134 SSL_get_psk_identity_hint
3135 SSL_get_psk_identity
3136 SSL_use_psk_identity_hint
3138 [Mika Kousa and Pasi Eronen of Nokia Corporation]
3140 *) Add RFC 3161 compliant time stamp request creation, response generation
3141 and response verification functionality.
3142 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
3144 *) Add initial support for TLS extensions, specifically for the server_name
3145 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
3146 have new members for a host name. The SSL data structure has an
3147 additional member SSL_CTX *initial_ctx so that new sessions can be
3148 stored in that context to allow for session resumption, even after the
3149 SSL has been switched to a new SSL_CTX in reaction to a client's
3150 server_name extension.
3152 New functions (subject to change):
3154 SSL_get_servername()
3155 SSL_get_servername_type()
3158 New CTRL codes and macros (subject to change):
3160 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
3161 - SSL_CTX_set_tlsext_servername_callback()
3162 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
3163 - SSL_CTX_set_tlsext_servername_arg()
3164 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
3166 openssl s_client has a new '-servername ...' option.
3168 openssl s_server has new options '-servername_host ...', '-cert2 ...',
3169 '-key2 ...', '-servername_fatal' (subject to change). This allows
3170 testing the HostName extension for a specific single host name ('-cert'
3171 and '-key' remain fallbacks for handshakes without HostName
3172 negotiation). If the unrecogninzed_name alert has to be sent, this by
3173 default is a warning; it becomes fatal with the '-servername_fatal'
3176 [Peter Sylvester, Remy Allais, Christophe Renou]
3178 *) Whirlpool hash implementation is added.
3181 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
3182 bn(64,32). Because of instruction set limitations it doesn't have
3183 any negative impact on performance. This was done mostly in order
3184 to make it possible to share assembler modules, such as bn_mul_mont
3185 implementations, between 32- and 64-bit builds without hassle.
3188 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
3189 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
3193 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
3194 dedicated Montgomery multiplication procedure, is introduced.
3195 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
3196 "64-bit" performance on certain 32-bit targets.
3199 *) New option SSL_OP_NO_COMP to disable use of compression selectively
3200 in SSL structures. New SSL ctrl to set maximum send fragment size.
3201 Save memory by seeting the I/O buffer sizes dynamically instead of
3202 using the maximum available value.
3205 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
3206 in addition to the text details.
3209 *) Very, very preliminary EXPERIMENTAL support for printing of general
3210 ASN1 structures. This currently produces rather ugly output and doesn't
3211 handle several customised structures at all.
3214 *) Integrated support for PVK file format and some related formats such
3215 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
3216 these in the 'rsa' and 'dsa' utilities.
3219 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
3222 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
3223 place for the (very old) "NETSCAPE" format certificates which are now
3224 handled using new ASN1 code equivalents.
3227 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
3228 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
3229 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
3232 *) Modify CRL distribution points extension code to print out previously
3233 unsupported fields. Enhance extension setting code to allow setting of
3237 *) Add print and set support for Issuing Distribution Point CRL extension.
3240 *) Change 'Configure' script to enable Camellia by default.
3243 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
3245 *) When rejecting SSL/TLS records due to an incorrect version number, never
3246 update s->server with a new major version number. As of
3247 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
3248 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
3249 the previous behavior could result in a read attempt at NULL when
3250 receiving specific incorrect SSL/TLS records once record payload
3251 protection is active. (CVE-2010-0740)
3252 [Bodo Moeller, Adam Langley <agl@chromium.org>]
3254 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
3255 could be crashed if the relevant tables were not present (e.g. chrooted).
3256 [Tomas Hoger <thoger@redhat.com>]
3258 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
3260 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
3261 [Martin Olsson, Neel Mehta]
3263 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
3264 accommodate for stack sorting, always a write lock!).
3267 *) On some versions of WIN32 Heap32Next is very slow. This can cause
3268 excessive delays in the RAND_poll(): over a minute. As a workaround
3269 include a time check in the inner Heap32Next loop too.
3272 *) The code that handled flushing of data in SSL/TLS originally used the
3273 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
3274 the problem outlined in PR#1949. The fix suggested there however can
3275 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
3276 of Apache). So instead simplify the code to flush unconditionally.
3277 This should be fine since flushing with no data to flush is a no op.
3280 *) Handle TLS versions 2.0 and later properly and correctly use the
3281 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
3282 off ancient servers have a habit of sticking around for a while...
3285 *) Modify compression code so it frees up structures without using the
3286 ex_data callbacks. This works around a problem where some applications
3287 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
3288 restarting) then use compression (e.g. SSL with compression) later.
3289 This results in significant per-connection memory leaks and
3290 has caused some security issues including CVE-2008-1678 and
3294 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
3295 change when encrypting or decrypting.
3298 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
3299 connect and renegotiate with servers which do not support RI.
3300 Until RI is more widely deployed this option is enabled by default.
3303 *) Add "missing" ssl ctrls to clear options and mode.
3306 *) If client attempts to renegotiate and doesn't support RI respond with
3307 a no_renegotiation alert as required by RFC5746. Some renegotiating
3308 TLS clients will continue a connection gracefully when they receive
3309 the alert. Unfortunately OpenSSL mishandled this alert and would hang
3310 waiting for a server hello which it will never receive. Now we treat a
3311 received no_renegotiation alert as a fatal error. This is because
3312 applications requesting a renegotiation might well expect it to succeed
3313 and would have no code in place to handle the server denying it so the
3314 only safe thing to do is to terminate the connection.
3317 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
3318 peer supports secure renegotiation and 0 otherwise. Print out peer
3319 renegotiation support in s_client/s_server.
3322 *) Replace the highly broken and deprecated SPKAC certification method with
3323 the updated NID creation version. This should correctly handle UTF8.
3326 *) Implement RFC5746. Re-enable renegotiation but require the extension
3327 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
3328 turns out to be a bad idea. It has been replaced by
3329 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
3330 SSL_CTX_set_options(). This is really not recommended unless you
3331 know what you are doing.
3332 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
3334 *) Fixes to stateless session resumption handling. Use initial_ctx when
3335 issuing and attempting to decrypt tickets in case it has changed during
3336 servername handling. Use a non-zero length session ID when attempting
3337 stateless session resumption: this makes it possible to determine if
3338 a resumption has occurred immediately after receiving server hello
3339 (several places in OpenSSL subtly assume this) instead of later in
3343 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
3344 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
3345 fixes for a few places where the return code is not checked
3347 [Julia Lawall <julia@diku.dk>]
3349 *) Add --strict-warnings option to Configure script to include devteam
3350 warnings in other configurations.
3353 *) Add support for --libdir option and LIBDIR variable in makefiles. This
3354 makes it possible to install openssl libraries in locations which
3355 have names other than "lib", for example "/usr/lib64" which some
3357 [Steve Henson, based on patch from Jeremy Utley]
3359 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
3360 X690 8.9.12 and can produce some misleading textual output of OIDs.
3361 [Steve Henson, reported by Dan Kaminsky]
3363 *) Delete MD2 from algorithm tables. This follows the recommendation in
3364 several standards that it is not used in new applications due to
3365 several cryptographic weaknesses. For binary compatibility reasons
3366 the MD2 API is still compiled in by default.
3369 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
3373 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
3374 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
3376 [Guenter <lists@gknw.net>]
3378 *) Fix the server certificate chain building code to use X509_verify_cert(),
3379 it used to have an ad-hoc builder which was unable to cope with anything
3380 other than a simple chain.
3381 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
3383 *) Don't check self signed certificate signatures in X509_verify_cert()
3384 by default (a flag can override this): it just wastes time without
3385 adding any security. As a useful side effect self signed root CAs
3386 with non-FIPS digests are now usable in FIPS mode.
3389 *) In dtls1_process_out_of_seq_message() the check if the current message
3390 is already buffered was missing. For every new message was memory
3391 allocated, allowing an attacker to perform an denial of service attack
3392 with sending out of seq handshake messages until there is no memory
3393 left. Additionally every future messege was buffered, even if the
3394 sequence number made no sense and would be part of another handshake.
3395 So only messages with sequence numbers less than 10 in advance will be
3396 buffered. (CVE-2009-1378)
3397 [Robin Seggelmann, discovered by Daniel Mentz]
3399 *) Records are buffered if they arrive with a future epoch to be
3400 processed after finishing the corresponding handshake. There is
3401 currently no limitation to this buffer allowing an attacker to perform
3402 a DOS attack with sending records with future epochs until there is no
3403 memory left. This patch adds the pqueue_size() function to detemine
3404 the size of a buffer and limits the record buffer to 100 entries.
3406 [Robin Seggelmann, discovered by Daniel Mentz]
3408 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
3409 parent structure is freed. (CVE-2009-1379)
3412 *) Handle non-blocking I/O properly in SSL_shutdown() call.
3413 [Darryl Miles <darryl-mailinglists@netbauds.net>]
3416 [Ilya O. <vrghost@gmail.com>]
3418 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
3420 *) Disable renegotiation completely - this fixes a severe security
3421 problem (CVE-2009-3555) at the cost of breaking all
3422 renegotiation. Renegotiation can be re-enabled by setting
3423 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
3424 run-time. This is really not recommended unless you know what
3428 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
3430 *) Don't set val to NULL when freeing up structures, it is freed up by
3431 underlying code. If sizeof(void *) > sizeof(long) this can result in
3432 zeroing past the valid field. (CVE-2009-0789)
3433 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
3435 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
3436 checked correctly. This would allow some invalid signed attributes to
3437 appear to verify correctly. (CVE-2009-0591)
3438 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3440 *) Reject UniversalString and BMPString types with invalid lengths. This
3441 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
3442 a legal length. (CVE-2009-0590)
3445 *) Set S/MIME signing as the default purpose rather than setting it
3446 unconditionally. This allows applications to override it at the store
3450 *) Permit restricted recursion of ASN1 strings. This is needed in practice
3451 to handle some structures.
3454 *) Improve efficiency of mem_gets: don't search whole buffer each time
3456 [Jeremy Shapiro <jnshapir@us.ibm.com>]
3458 *) New -hex option for openssl rand.
3461 *) Print out UTF8String and NumericString when parsing ASN1.
3464 *) Support NumericString type for name components.
3467 *) Allow CC in the environment to override the automatically chosen
3468 compiler. Note that nothing is done to ensure flags work with the
3472 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
3474 *) Properly check EVP_VerifyFinal() and similar return values
3476 [Ben Laurie, Bodo Moeller, Google Security Team]
3478 *) Enable TLS extensions by default.
3481 *) Allow the CHIL engine to be loaded, whether the application is
3482 multithreaded or not. (This does not release the developer from the
3483 obligation to set up the dynamic locking callbacks.)
3484 [Sander Temme <sander@temme.net>]
3486 *) Use correct exit code if there is an error in dgst command.
3487 [Steve Henson; problem pointed out by Roland Dirlewanger]
3489 *) Tweak Configure so that you need to say "experimental-jpake" to enable
3490 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
3493 *) Add experimental JPAKE support, including demo authentication in
3494 s_client and s_server.
3497 *) Set the comparison function in v3_addr_canonize().
3498 [Rob Austein <sra@hactrn.net>]
3500 *) Add support for XMPP STARTTLS in s_client.
3501 [Philip Paeps <philip@freebsd.org>]
3503 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
3504 to ensure that even with this option, only ciphersuites in the
3505 server's preference list will be accepted. (Note that the option
3506 applies only when resuming a session, so the earlier behavior was
3507 just about the algorithm choice for symmetric cryptography.)
3510 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
3512 *) Fix NULL pointer dereference if a DTLS server received
3513 ChangeCipherSpec as first record (CVE-2009-1386).
3516 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
3517 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
3520 *) The fix in 0.9.8c that supposedly got rid of unsafe
3521 double-checked locking was incomplete for RSA blinding,
3522 addressing just one layer of what turns out to have been
3523 doubly unsafe triple-checked locking.
3525 So now fix this for real by retiring the MONT_HELPER macro
3526 in crypto/rsa/rsa_eay.c.
3528 [Bodo Moeller; problem pointed out by Marius Schilder]
3530 *) Various precautionary measures:
3532 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
3534 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
3535 (NB: This would require knowledge of the secret session ticket key
3536 to exploit, in which case you'd be SOL either way.)
3538 - Change bn_nist.c so that it will properly handle input BIGNUMs
3539 outside the expected range.
3541 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
3544 [Neel Mehta, Bodo Moeller]
3546 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
3547 the load fails. Useful for distros.
3548 [Ben Laurie and the FreeBSD team]
3550 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
3553 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
3556 *) Expand ENGINE to support engine supplied SSL client certificate functions.
3558 This work was sponsored by Logica.
3561 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
3562 keystores. Support for SSL/TLS client authentication too.
3563 Not compiled unless enable-capieng specified to Configure.
3565 This work was sponsored by Logica.
3568 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
3569 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
3570 attribute creation routines such as certifcate requests and PKCS#12
3574 Changes between 0.9.8g and 0.9.8h [28 May 2008]
3576 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
3577 handshake which could lead to a cilent crash as found using the
3578 Codenomicon TLS test suite (CVE-2008-1672)
3579 [Steve Henson, Mark Cox]
3581 *) Fix double free in TLS server name extensions which could lead to
3582 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
3585 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
3587 Clear the error queue to ensure that error entries left from
3588 older function calls do not interfere with the correct operation.
3589 [Lutz Jaenicke, Erik de Castro Lopo]
3591 *) Remove root CA certificates of commercial CAs:
3593 The OpenSSL project does not recommend any specific CA and does not
3594 have any policy with respect to including or excluding any CA.
3595 Therefore it does not make any sense to ship an arbitrary selection
3596 of root CA certificates with the OpenSSL software.
3599 *) RSA OAEP patches to fix two separate invalid memory reads.
3600 The first one involves inputs when 'lzero' is greater than
3601 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
3602 before the beginning of from). The second one involves inputs where
3603 the 'db' section contains nothing but zeroes (there is a one-byte
3604 invalid read after the end of 'db').
3605 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3607 *) Partial backport from 0.9.9-dev:
3609 Introduce bn_mul_mont (dedicated Montgomery multiplication
3610 procedure) as a candidate for BIGNUM assembler implementation.
3611 While 0.9.9-dev uses assembler for various architectures, only
3612 x86_64 is available by default here in the 0.9.8 branch, and
3613 32-bit x86 is available through a compile-time setting.
3615 To try the 32-bit x86 assembler implementation, use Configure
3616 option "enable-montasm" (which exists only for this backport).
3618 As "enable-montasm" for 32-bit x86 disclaims code stability
3619 anyway, in this constellation we activate additional code
3620 backported from 0.9.9-dev for further performance improvements,
3621 namely BN_from_montgomery_word. (To enable this otherwise,
3622 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
3624 [Andy Polyakov (backport partially by Bodo Moeller)]
3626 *) Add TLS session ticket callback. This allows an application to set
3627 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
3628 values. This is useful for key rollover for example where several key
3629 sets may exist with different names.
3632 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
3633 This was broken until now in 0.9.8 releases, such that the only way
3634 a registered ENGINE could be used (assuming it initialises
3635 successfully on the host) was to explicitly set it as the default
3636 for the relevant algorithms. This is in contradiction with 0.9.7
3637 behaviour and the documentation. With this fix, when an ENGINE is
3638 registered into a given algorithm's table of implementations, the
3639 'uptodate' flag is reset so that auto-discovery will be used next
3640 time a new context for that algorithm attempts to select an
3642 [Ian Lister (tweaked by Geoff Thorpe)]
3644 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
3645 implemention in the following ways:
3647 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
3650 Lack of BER streaming support means one pass streaming processing is
3651 only supported if data is detached: setting the streaming flag is
3652 ignored for embedded content.
3654 CMS support is disabled by default and must be explicitly enabled
3655 with the enable-cms configuration option.
3658 *) Update the GMP engine glue to do direct copies between BIGNUM and
3659 mpz_t when openssl and GMP use the same limb size. Otherwise the
3660 existing "conversion via a text string export" trick is still used.
3661 [Paul Sheer <paulsheer@gmail.com>]
3663 *) Zlib compression BIO. This is a filter BIO which compressed and
3664 uncompresses any data passed through it.
3667 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
3668 RFC3394 compatible AES key wrapping.
3671 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
3672 sets string data without copying. X509_ALGOR_set0() and
3673 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
3674 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
3675 from an X509_ATTRIBUTE structure optionally checking it occurs only
3676 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
3680 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
3681 to get the expected BN_FLG_CONSTTIME behavior.
3682 [Bodo Moeller (Google)]
3686 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
3687 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
3688 - added some more tests to do_tests.pl
3689 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
3690 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
3691 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
3692 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
3693 - various changes to netware.pl to enable gcc-cross builds on Win32
3695 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
3696 - various changes to fix missing prototype warnings
3697 - fixed x86nasm.pl to create correct asm files for NASM COFF output
3698 - added AES, WHIRLPOOL and CPUID assembler code to build files
3699 - added missing AES assembler make rules to mk1mf.pl
3700 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
3701 [Guenter Knauf <eflash@gmx.net>]
3703 *) Implement certificate status request TLS extension defined in RFC3546.
3704 A client can set the appropriate parameters and receive the encoded
3705 OCSP response via a callback. A server can query the supplied parameters
3706 and set the encoded OCSP response in the callback. Add simplified examples
3707 to s_client and s_server.
3710 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
3712 *) Fix various bugs:
3713 + Binary incompatibility of ssl_ctx_st structure
3714 + DTLS interoperation with non-compliant servers
3715 + Don't call get_session_cb() without proposed session
3716 + Fix ia64 assembler code
3717 [Andy Polyakov, Steve Henson]
3719 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
3721 *) DTLS Handshake overhaul. There were longstanding issues with
3722 OpenSSL DTLS implementation, which were making it impossible for
3723 RFC 4347 compliant client to communicate with OpenSSL server.
3724 Unfortunately just fixing these incompatibilities would "cut off"
3725 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
3726 server keeps tolerating non RFC compliant syntax. The opposite is
3727 not true, 0.9.8f client can not communicate with earlier server.
3728 This update even addresses CVE-2007-4995.
3731 *) Changes to avoid need for function casts in OpenSSL: some compilers
3732 (gcc 4.2 and later) reject their use.
3733 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
3736 *) Add RFC4507 support to OpenSSL. This includes the corrections in
3737 RFC4507bis. The encrypted ticket format is an encrypted encoded
3738 SSL_SESSION structure, that way new session features are automatically
3741 If a client application caches session in an SSL_SESSION structure
3742 support is transparent because tickets are now stored in the encoded
3745 The SSL_CTX structure automatically generates keys for ticket
3746 protection in servers so again support should be possible
3747 with no application modification.
3749 If a client or server wishes to disable RFC4507 support then the option
3750 SSL_OP_NO_TICKET can be set.
3752 Add a TLS extension debugging callback to allow the contents of any client
3753 or server extensions to be examined.
3755 This work was sponsored by Google.
3758 *) Add initial support for TLS extensions, specifically for the server_name
3759 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
3760 have new members for a host name. The SSL data structure has an
3761 additional member SSL_CTX *initial_ctx so that new sessions can be
3762 stored in that context to allow for session resumption, even after the
3763 SSL has been switched to a new SSL_CTX in reaction to a client's
3764 server_name extension.
3766 New functions (subject to change):
3768 SSL_get_servername()
3769 SSL_get_servername_type()
3772 New CTRL codes and macros (subject to change):
3774 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
3775 - SSL_CTX_set_tlsext_servername_callback()
3776 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
3777 - SSL_CTX_set_tlsext_servername_arg()
3778 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
3780 openssl s_client has a new '-servername ...' option.
3782 openssl s_server has new options '-servername_host ...', '-cert2 ...',
3783 '-key2 ...', '-servername_fatal' (subject to change). This allows
3784 testing the HostName extension for a specific single host name ('-cert'
3785 and '-key' remain fallbacks for handshakes without HostName
3786 negotiation). If the unrecogninzed_name alert has to be sent, this by
3787 default is a warning; it becomes fatal with the '-servername_fatal'
3790 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
3792 *) Add AES and SSE2 assembly language support to VC++ build.
3795 *) Mitigate attack on final subtraction in Montgomery reduction.
3798 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
3799 (which previously caused an internal error).
3802 *) Squeeze another 10% out of IGE mode when in != out.
3805 *) AES IGE mode speedup.
3806 [Dean Gaudet (Google)]
3808 *) Add the Korean symmetric 128-bit cipher SEED (see
3809 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
3810 add SEED ciphersuites from RFC 4162:
3812 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
3813 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
3814 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
3815 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
3817 To minimize changes between patchlevels in the OpenSSL 0.9.8
3818 series, SEED remains excluded from compilation unless OpenSSL
3819 is configured with 'enable-seed'.
3820 [KISA, Bodo Moeller]
3822 *) Mitigate branch prediction attacks, which can be practical if a
3823 single processor is shared, allowing a spy process to extract
3824 information. For detailed background information, see
3825 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
3826 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
3827 and Necessary Software Countermeasures"). The core of the change
3828 are new versions BN_div_no_branch() and
3829 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
3830 respectively, which are slower, but avoid the security-relevant
3831 conditional branches. These are automatically called by BN_div()
3832 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
3833 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
3834 remove a conditional branch.
3836 BN_FLG_CONSTTIME is the new name for the previous
3837 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
3838 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
3839 in the exponent causes BN_mod_exp_mont() to use the alternative
3840 implementation in BN_mod_exp_mont_consttime().) The old name
3841 remains as a deprecated alias.
3843 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
3844 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
3845 constant-time implementations for more than just exponentiation.
3846 Here too the old name is kept as a deprecated alias.
3848 BN_BLINDING_new() will now use BN_dup() for the modulus so that
3849 the BN_BLINDING structure gets an independent copy of the
3850 modulus. This means that the previous "BIGNUM *m" argument to
3851 BN_BLINDING_new() and to BN_BLINDING_create_param() now
3852 essentially becomes "const BIGNUM *m", although we can't actually
3853 change this in the header file before 0.9.9. It allows
3854 RSA_setup_blinding() to use BN_with_flags() on the modulus to
3855 enable BN_FLG_CONSTTIME.
3857 [Matthew D Wood (Intel Corp)]
3859 *) In the SSL/TLS server implementation, be strict about session ID
3860 context matching (which matters if an application uses a single
3861 external cache for different purposes). Previously,
3862 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
3863 set. This did ensure strict client verification, but meant that,
3864 with applications using a single external cache for quite
3865 different requirements, clients could circumvent ciphersuite
3866 restrictions for a given session ID context by starting a session
3867 in a different context.
3870 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3871 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3872 authentication-only ciphersuites.
3875 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
3876 not complete and could lead to a possible single byte overflow
3877 (CVE-2007-5135) [Ben Laurie]
3879 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
3881 *) Since AES128 and AES256 (and similarly Camellia128 and
3882 Camellia256) share a single mask bit in the logic of
3883 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3884 kludge to work properly if AES128 is available and AES256 isn't
3885 (or if Camellia128 is available and Camellia256 isn't).
3888 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
3889 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
3890 When a point or a seed is encoded in a BIT STRING, we need to
3891 prevent the removal of trailing zero bits to get the proper DER
3892 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
3893 of a NamedBitList, for which trailing 0 bits need to be removed.)
3896 *) Have SSL/TLS server implementation tolerate "mismatched" record
3897 protocol version while receiving ClientHello even if the
3898 ClientHello is fragmented. (The server can't insist on the
3899 particular protocol version it has chosen before the ServerHello
3900 message has informed the client about his choice.)
3903 *) Add RFC 3779 support.
3904 [Rob Austein for ARIN, Ben Laurie]
3906 *) Load error codes if they are not already present instead of using a
3907 static variable. This allows them to be cleanly unloaded and reloaded.
3908 Improve header file function name parsing.
3911 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
3912 or CAPABILITY handshake as required by RFCs.
3915 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
3917 *) Introduce limits to prevent malicious keys being able to
3918 cause a denial of service. (CVE-2006-2940)
3919 [Steve Henson, Bodo Moeller]
3921 *) Fix ASN.1 parsing of certain invalid structures that can result
3922 in a denial of service. (CVE-2006-2937) [Steve Henson]
3924 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3925 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3927 *) Fix SSL client code which could crash if connecting to a
3928 malicious SSLv2 server. (CVE-2006-4343)
3929 [Tavis Ormandy and Will Drewry, Google Security Team]
3931 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
3932 match only those. Before that, "AES256-SHA" would be interpreted
3933 as a pattern and match "AES128-SHA" too (since AES128-SHA got
3934 the same strength classification in 0.9.7h) as we currently only
3935 have a single AES bit in the ciphersuite description bitmap.
3936 That change, however, also applied to ciphersuite strings such as
3937 "RC4-MD5" that intentionally matched multiple ciphersuites --
3938 namely, SSL 2.0 ciphersuites in addition to the more common ones
3939 from SSL 3.0/TLS 1.0.
3941 So we change the selection algorithm again: Naming an explicit
3942 ciphersuite selects this one ciphersuite, and any other similar
3943 ciphersuite (same bitmap) from *other* protocol versions.
3944 Thus, "RC4-MD5" again will properly select both the SSL 2.0
3945 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
3947 Since SSL 2.0 does not have any ciphersuites for which the
3948 128/256 bit distinction would be relevant, this works for now.
3949 The proper fix will be to use different bits for AES128 and
3950 AES256, which would have avoided the problems from the beginning;
3951 however, bits are scarce, so we can only do this in a new release
3952 (not just a patchlevel) when we can change the SSL_CIPHER
3953 definition to split the single 'unsigned long mask' bitmap into
3954 multiple values to extend the available space.
3958 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
3960 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3961 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3963 *) Add AES IGE and biIGE modes.
3966 *) Change the Unix randomness entropy gathering to use poll() when
3967 possible instead of select(), since the latter has some
3968 undesirable limitations.
3969 [Darryl Miles via Richard Levitte and Bodo Moeller]
3971 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
3972 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
3973 cannot be implicitly activated as part of, e.g., the "AES" alias.
3974 However, please upgrade to OpenSSL 0.9.9[-dev] for
3975 non-experimental use of the ECC ciphersuites to get TLS extension
3976 support, which is required for curve and point format negotiation
3977 to avoid potential handshake problems.
3980 *) Disable rogue ciphersuites:
3982 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3983 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3984 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3986 The latter two were purportedly from
3987 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3990 Also deactivate the remaining ciphersuites from
3991 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3992 unofficial, and the ID has long expired.
3995 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3996 dual-core machines) and other potential thread-safety issues.
3999 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
4000 versions), which is now available for royalty-free use
4001 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
4002 Also, add Camellia TLS ciphersuites from RFC 4132.
4004 To minimize changes between patchlevels in the OpenSSL 0.9.8
4005 series, Camellia remains excluded from compilation unless OpenSSL
4006 is configured with 'enable-camellia'.
4009 *) Disable the padding bug check when compression is in use. The padding
4010 bug check assumes the first packet is of even length, this is not
4011 necessarily true if compresssion is enabled and can result in false
4012 positives causing handshake failure. The actual bug test is ancient
4013 code so it is hoped that implementations will either have fixed it by
4014 now or any which still have the bug do not support compression.
4017 Changes between 0.9.8a and 0.9.8b [04 May 2006]
4019 *) When applying a cipher rule check to see if string match is an explicit
4020 cipher suite and only match that one cipher suite if it is.
4023 *) Link in manifests for VC++ if needed.
4024 [Austin Ziegler <halostatue@gmail.com>]
4026 *) Update support for ECC-based TLS ciphersuites according to
4027 draft-ietf-tls-ecc-12.txt with proposed changes (but without
4028 TLS extensions, which are supported starting with the 0.9.9
4029 branch, not in the OpenSSL 0.9.8 branch).
4032 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
4033 opaque EVP_CIPHER_CTX handling.
4036 *) Fixes and enhancements to zlib compression code. We now only use
4037 "zlib1.dll" and use the default __cdecl calling convention on Win32
4038 to conform with the standards mentioned here:
4039 http://www.zlib.net/DLL_FAQ.txt
4040 Static zlib linking now works on Windows and the new --with-zlib-include
4041 --with-zlib-lib options to Configure can be used to supply the location
4042 of the headers and library. Gracefully handle case where zlib library
4046 *) Several fixes and enhancements to the OID generation code. The old code
4047 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
4048 handle numbers larger than ULONG_MAX, truncated printing and had a
4049 non standard OBJ_obj2txt() behaviour.
4052 *) Add support for building of engines under engine/ as shared libraries
4053 under VC++ build system.
4056 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
4057 Hopefully, we will not see any false combination of paths any more.
4060 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
4062 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4063 (part of SSL_OP_ALL). This option used to disable the
4064 countermeasure against man-in-the-middle protocol-version
4065 rollback in the SSL 2.0 server implementation, which is a bad
4066 idea. (CVE-2005-2969)
4068 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4069 for Information Security, National Institute of Advanced Industrial
4070 Science and Technology [AIST], Japan)]
4072 *) Add two function to clear and return the verify parameter flags.
4075 *) Keep cipherlists sorted in the source instead of sorting them at
4076 runtime, thus removing the need for a lock.
4079 *) Avoid some small subgroup attacks in Diffie-Hellman.
4080 [Nick Mathewson and Ben Laurie]
4082 *) Add functions for well-known primes.
4085 *) Extended Windows CE support.
4086 [Satoshi Nakamura and Andy Polyakov]
4088 *) Initialize SSL_METHOD structures at compile time instead of during
4089 runtime, thus removing the need for a lock.
4092 *) Make PKCS7_decrypt() work even if no certificate is supplied by
4093 attempting to decrypt each encrypted key in turn. Add support to
4097 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
4099 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
4102 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
4105 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
4106 key into the same file any more.
4109 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
4112 *) Add -utf8 command line and config file option to 'ca'.
4113 [Stefan <stf@udoma.org]
4115 *) Removed the macro des_crypt(), as it seems to conflict with some
4116 libraries. Use DES_crypt().
4119 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
4120 involves renaming the source and generated shared-libs for
4121 both. The engines will accept the corrected or legacy ids
4122 ('ncipher' and '4758_cca' respectively) when binding. NB,
4123 this only applies when building 'shared'.
4124 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
4126 *) Add attribute functions to EVP_PKEY structure. Modify
4127 PKCS12_create() to recognize a CSP name attribute and
4128 use it. Make -CSP option work again in pkcs12 utility.
4131 *) Add new functionality to the bn blinding code:
4132 - automatic re-creation of the BN_BLINDING parameters after
4133 a fixed number of uses (currently 32)
4134 - add new function for parameter creation
4135 - introduce flags to control the update behaviour of the
4136 BN_BLINDING parameters
4137 - hide BN_BLINDING structure
4138 Add a second BN_BLINDING slot to the RSA structure to improve
4139 performance when a single RSA object is shared among several
4143 *) Add support for DTLS.
4144 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
4146 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
4147 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
4150 *) Remove buggy and incompletet DH cert support from
4151 ssl/ssl_rsa.c and ssl/s3_both.c
4154 *) Use SHA-1 instead of MD5 as the default digest algorithm for
4155 the apps/openssl applications.
4158 *) Compile clean with "-Wall -Wmissing-prototypes
4159 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
4160 DEBUG_SAFESTACK must also be set.
4163 *) Change ./Configure so that certain algorithms can be disabled by default.
4164 The new counterpiece to "no-xxx" is "enable-xxx".
4166 The patented RC5 and MDC2 algorithms will now be disabled unless
4167 "enable-rc5" and "enable-mdc2", respectively, are specified.
4169 (IDEA remains enabled despite being patented. This is because IDEA
4170 is frequently required for interoperability, and there is no license
4171 fee for non-commercial use. As before, "no-idea" can be used to
4172 avoid this algorithm.)
4176 *) Add processing of proxy certificates (see RFC 3820). This work was
4177 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
4178 EGEE (Enabling Grids for E-science in Europe).
4181 *) RC4 performance overhaul on modern architectures/implementations, such
4182 as Intel P4, IA-64 and AMD64.
4185 *) New utility extract-section.pl. This can be used specify an alternative
4186 section number in a pod file instead of having to treat each file as
4187 a separate case in Makefile. This can be done by adding two lines to the
4190 =for comment openssl_section:XXX
4192 The blank line is mandatory.
4196 *) New arguments -certform, -keyform and -pass for s_client and s_server
4197 to allow alternative format key and certificate files and passphrase
4201 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
4202 update associated structures and add various utility functions.
4204 Add new policy related verify parameters, include policy checking in
4205 standard verify code. Enhance 'smime' application with extra parameters
4206 to support policy checking and print out.
4209 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
4210 Nehemiah processors. These extensions support AES encryption in hardware
4211 as well as RNG (though RNG support is currently disabled).
4212 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
4214 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
4217 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
4218 [Andy Polyakov and a number of other people]
4220 *) Improved PowerPC platform support. Most notably BIGNUM assembler
4221 implementation contributed by IBM.
4222 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
4224 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
4225 exponent rather than 'unsigned long'. There is a corresponding change to
4226 the new 'rsa_keygen' element of the RSA_METHOD structure.
4227 [Jelte Jansen, Geoff Thorpe]
4229 *) Functionality for creating the initial serial number file is now
4230 moved from CA.pl to the 'ca' utility with a new option -create_serial.
4232 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
4233 number file to 1, which is bound to cause problems. To avoid
4234 the problems while respecting compatibility between different 0.9.7
4235 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
4236 CA.pl for serial number initialization. With the new release 0.9.8,
4237 we can fix the problem directly in the 'ca' utility.)
4240 *) Reduced header interdepencies by declaring more opaque objects in
4241 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
4242 give fewer recursive includes, which could break lazy source code - so
4243 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
4244 developers should define this symbol when building and using openssl to
4245 ensure they track the recommended behaviour, interfaces, [etc], but
4246 backwards-compatible behaviour prevails when this isn't defined.
4249 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
4252 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
4253 This will generate a random key of the appropriate length based on the
4254 cipher context. The EVP_CIPHER can provide its own random key generation
4255 routine to support keys of a specific form. This is used in the des and
4256 3des routines to generate a key of the correct parity. Update S/MIME
4257 code to use new functions and hence generate correct parity DES keys.
4258 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
4259 valid (weak or incorrect parity).
4262 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
4263 as looking them up. This is useful when the verified structure may contain
4264 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
4265 present unless the new PKCS7_NO_CRL flag is asserted.
4268 *) Extend ASN1 oid configuration module. It now additionally accepts the
4271 shortName = some long name, 1.2.3.4
4274 *) Reimplemented the BN_CTX implementation. There is now no more static
4275 limitation on the number of variables it can handle nor the depth of the
4276 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
4277 information can now expand as required, and rather than having a single
4278 static array of bignums, BN_CTX now uses a linked-list of such arrays
4279 allowing it to expand on demand whilst maintaining the usefulness of
4280 BN_CTX's "bundling".
4283 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
4284 to allow all RSA operations to function using a single BN_CTX.
4287 *) Preliminary support for certificate policy evaluation and checking. This
4288 is initially intended to pass the tests outlined in "Conformance Testing
4289 of Relying Party Client Certificate Path Processing Logic" v1.07.
4292 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
4293 remained unused and not that useful. A variety of other little bignum
4294 tweaks and fixes have also been made continuing on from the audit (see
4298 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
4299 associated ASN1, EVP and SSL functions and old ASN1 macros.
4302 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
4303 and this should never fail. So the return value from the use of
4304 BN_set_word() (which can fail due to needless expansion) is now deprecated;
4305 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
4308 *) BN_CTX_get() should return zero-valued bignums, providing the same
4309 initialised value as BN_new().
4310 [Geoff Thorpe, suggested by Ulf Möller]
4312 *) Support for inhibitAnyPolicy certificate extension.
4315 *) An audit of the BIGNUM code is underway, for which debugging code is
4316 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
4317 is considered valid when processing BIGNUMs, and causes execution to
4318 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
4319 further steps are taken to deliberately pollute unused data in BIGNUM
4320 structures to try and expose faulty code further on. For now, openssl will
4321 (in its default mode of operation) continue to tolerate the inconsistent
4322 forms that it has tolerated in the past, but authors and packagers should
4323 consider trying openssl and their own applications when compiled with
4324 these debugging symbols defined. It will help highlight potential bugs in
4325 their own code, and will improve the test coverage for OpenSSL itself. At
4326 some point, these tighter rules will become openssl's default to improve
4327 maintainability, though the assert()s and other overheads will remain only
4328 in debugging configurations. See bn.h for more details.
4329 [Geoff Thorpe, Nils Larsch, Ulf Möller]
4331 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
4332 that can only be obtained through BN_CTX_new() (which implicitly
4333 initialises it). The presence of this function only made it possible
4334 to overwrite an existing structure (and cause memory leaks).
4337 *) Because of the callback-based approach for implementing LHASH as a
4338 template type, lh_insert() adds opaque objects to hash-tables and
4339 lh_doall() or lh_doall_arg() are typically used with a destructor callback
4340 to clean up those corresponding objects before destroying the hash table
4341 (and losing the object pointers). So some over-zealous constifications in
4342 LHASH have been relaxed so that lh_insert() does not take (nor store) the
4343 objects as "const" and the lh_doall[_arg] callback wrappers are not
4344 prototyped to have "const" restrictions on the object pointers they are
4345 given (and so aren't required to cast them away any more).
4348 *) The tmdiff.h API was so ugly and minimal that our own timing utility
4349 (speed) prefers to use its own implementation. The two implementations
4350 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
4351 its object type properly exposed (MS_TM) instead of casting to/from "char
4352 *". This may still change yet if someone realises MS_TM and "ms_time_***"
4353 aren't necessarily the greatest nomenclatures - but this is what was used
4354 internally to the implementation so I've used that for now.
4357 *) Ensure that deprecated functions do not get compiled when
4358 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
4359 the self-tests were still using deprecated key-generation functions so
4360 these have been updated also.
4363 *) Reorganise PKCS#7 code to separate the digest location functionality
4364 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
4365 New function PKCS7_set_digest() to set the digest type for PKCS#7
4366 digestedData type. Add additional code to correctly generate the
4367 digestedData type and add support for this type in PKCS7 initialization
4371 *) New function PKCS7_set0_type_other() this initializes a PKCS7
4372 structure of type "other".
4375 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
4376 sure the loop does correctly stop and breaking ("division by zero")
4377 modulus operations are not performed. The (pre-generated) prime
4378 table crypto/bn/bn_prime.h was already correct, but it could not be
4379 re-generated on some platforms because of the "division by zero"
4380 situation in the script.
4381 [Ralf S. Engelschall]
4383 *) Update support for ECC-based TLS ciphersuites according to
4384 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
4385 SHA-1 now is only used for "small" curves (where the
4386 representation of a field element takes up to 24 bytes); for
4387 larger curves, the field element resulting from ECDH is directly
4388 used as premaster secret.
4389 [Douglas Stebila (Sun Microsystems Laboratories)]
4391 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
4392 curve secp160r1 to the tests.
4393 [Douglas Stebila (Sun Microsystems Laboratories)]
4395 *) Add the possibility to load symbols globally with DSO.
4396 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
4398 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
4399 control of the error stack.
4402 *) Add support for STORE in ENGINE.
4405 *) Add the STORE type. The intention is to provide a common interface
4406 to certificate and key stores, be they simple file-based stores, or
4407 HSM-type store, or LDAP stores, or...
4408 NOTE: The code is currently UNTESTED and isn't really used anywhere.
4411 *) Add a generic structure called OPENSSL_ITEM. This can be used to
4412 pass a list of arguments to any function as well as provide a way
4413 for a function to pass data back to the caller.
4416 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
4417 works like BUF_strdup() but can be used to duplicate a portion of
4418 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
4422 *) Add the function sk_find_ex() which works like sk_find(), but will
4423 return an index to an element even if an exact match couldn't be
4424 found. The index is guaranteed to point at the element where the
4425 searched-for key would be inserted to preserve sorting order.
4428 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
4429 takes an extra flags argument for optional functionality. Currently,
4430 the following flags are defined:
4432 OBJ_BSEARCH_VALUE_ON_NOMATCH
4433 This one gets OBJ_bsearch_ex() to return a pointer to the first
4434 element where the comparing function returns a negative or zero
4437 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
4438 This one gets OBJ_bsearch_ex() to return a pointer to the first
4439 element where the comparing function returns zero. This is useful
4440 if there are more than one element where the comparing function
4444 *) Make it possible to create self-signed certificates with 'openssl ca'
4445 in such a way that the self-signed certificate becomes part of the
4446 CA database and uses the same mechanisms for serial number generation
4447 as all other certificate signing. The new flag '-selfsign' enables
4448 this functionality. Adapt CA.sh and CA.pl.in.
4451 *) Add functionality to check the public key of a certificate request
4452 against a given private. This is useful to check that a certificate
4453 request can be signed by that key (self-signing).
4456 *) Make it possible to have multiple active certificates with the same
4457 subject in the CA index file. This is done only if the keyword
4458 'unique_subject' is set to 'no' in the main CA section (default
4459 if 'CA_default') of the configuration file. The value is saved
4460 with the database itself in a separate index attribute file,
4461 named like the index file with '.attr' appended to the name.
4464 *) Generate muti valued AVAs using '+' notation in config files for
4468 *) Support for nameConstraints certificate extension.
4471 *) Support for policyConstraints certificate extension.
4474 *) Support for policyMappings certificate extension.
4477 *) Make sure the default DSA_METHOD implementation only uses its
4478 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
4479 and change its own handlers to be NULL so as to remove unnecessary
4480 indirection. This lets alternative implementations fallback to the
4481 default implementation more easily.
4484 *) Support for directoryName in GeneralName related extensions
4488 *) Make it possible to link applications using Makefile.shared.
4489 Make that possible even when linking against static libraries!
4492 *) Support for single pass processing for S/MIME signing. This now
4493 means that S/MIME signing can be done from a pipe, in addition
4494 cleartext signing (multipart/signed type) is effectively streaming
4495 and the signed data does not need to be all held in memory.
4497 This is done with a new flag PKCS7_STREAM. When this flag is set
4498 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
4499 is done after the data is output (and digests calculated) in
4500 SMIME_write_PKCS7().
4503 *) Add full support for -rpath/-R, both in shared libraries and
4504 applications, at least on the platforms where it's known how
4508 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
4509 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
4510 will now compute a table of multiples of the generator that
4511 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
4512 faster (notably in the case of a single point multiplication,
4513 scalar * generator).
4514 [Nils Larsch, Bodo Moeller]
4516 *) IPv6 support for certificate extensions. The various extensions
4517 which use the IP:a.b.c.d can now take IPv6 addresses using the
4518 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
4522 *) Added an ENGINE that implements RSA by performing private key
4523 exponentiations with the GMP library. The conversions to and from
4524 GMP's mpz_t format aren't optimised nor are any montgomery forms
4525 cached, and on x86 it appears OpenSSL's own performance has caught up.
4526 However there are likely to be other architectures where GMP could
4527 provide a boost. This ENGINE is not built in by default, but it can be
4528 specified at Configure time and should be accompanied by the necessary
4529 linker additions, eg;
4530 ./config -DOPENSSL_USE_GMP -lgmp
4533 *) "openssl engine" will not display ENGINE/DSO load failure errors when
4534 testing availability of engines with "-t" - the old behaviour is
4535 produced by increasing the feature's verbosity with "-tt".
4538 *) ECDSA routines: under certain error conditions uninitialized BN objects
4539 could be freed. Solution: make sure initialization is performed early
4540 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
4544 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
4545 and DH_METHOD (eg. by ENGINE implementations) to override the normal
4546 software implementations. For DSA and DH, parameter generation can
4547 also be overriden by providing the appropriate method callbacks.
4550 *) Change the "progress" mechanism used in key-generation and
4551 primality testing to functions that take a new BN_GENCB pointer in
4552 place of callback/argument pairs. The new API functions have "_ex"
4553 postfixes and the older functions are reimplemented as wrappers for
4554 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
4555 declarations of the old functions to help (graceful) attempts to
4556 migrate to the new functions. Also, the new key-generation API
4557 functions operate on a caller-supplied key-structure and return
4558 success/failure rather than returning a key or NULL - this is to
4559 help make "keygen" another member function of RSA_METHOD etc.
4561 Example for using the new callback interface:
4563 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
4567 BN_GENCB_set(&my_cb, my_callback, my_arg);
4569 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
4570 /* For the meaning of a, b in calls to my_callback(), see the
4571 * documentation of the function that calls the callback.
4572 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
4573 * my_callback should return 1 if it wants BN_is_prime_ex()
4574 * to continue, or 0 to stop.
4579 *) Change the ZLIB compression method to be stateful, and make it
4580 available to TLS with the number defined in
4581 draft-ietf-tls-compression-04.txt.
4584 *) Add the ASN.1 structures and functions for CertificatePair, which
4585 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
4587 CertificatePair ::= SEQUENCE {
4588 forward [0] Certificate OPTIONAL,
4589 reverse [1] Certificate OPTIONAL,
4590 -- at least one of the pair shall be present -- }
4592 Also implement the PEM functions to read and write certificate
4593 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
4595 This needed to be defined, mostly for the sake of the LDAP
4596 attribute crossCertificatePair, but may prove useful elsewhere as
4600 *) Make it possible to inhibit symlinking of shared libraries in
4601 Makefile.shared, for Cygwin's sake.
4604 *) Extend the BIGNUM API by creating a function
4605 void BN_set_negative(BIGNUM *a, int neg);
4606 and a macro that behave like
4607 int BN_is_negative(const BIGNUM *a);
4609 to avoid the need to access 'a->neg' directly in applications.
4612 *) Implement fast modular reduction for pseudo-Mersenne primes
4613 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
4614 EC_GROUP_new_curve_GFp() will now automatically use this
4616 [Nils Larsch <nla@trustcenter.de>]
4618 *) Add new lock type (CRYPTO_LOCK_BN).
4621 *) Change the ENGINE framework to automatically load engines
4622 dynamically from specific directories unless they could be
4623 found to already be built in or loaded. Move all the
4624 current engines except for the cryptodev one to a new
4626 The engines in engines/ are built as shared libraries if
4627 the "shared" options was given to ./Configure or ./config.
4628 Otherwise, they are inserted in libcrypto.a.
4629 /usr/local/ssl/engines is the default directory for dynamic
4630 engines, but that can be overriden at configure time through
4631 the usual use of --prefix and/or --openssldir, and at run
4632 time with the environment variable OPENSSL_ENGINES.
4633 [Geoff Thorpe and Richard Levitte]
4635 *) Add Makefile.shared, a helper makefile to build shared
4636 libraries. Addapt Makefile.org.
4639 *) Add version info to Win32 DLLs.
4640 [Peter 'Luna' Runestig" <peter@runestig.com>]
4642 *) Add new 'medium level' PKCS#12 API. Certificates and keys
4643 can be added using this API to created arbitrary PKCS#12
4644 files while avoiding the low level API.
4646 New options to PKCS12_create(), key or cert can be NULL and
4647 will then be omitted from the output file. The encryption
4648 algorithm NIDs can be set to -1 for no encryption, the mac
4649 iteration count can be set to 0 to omit the mac.
4651 Enhance pkcs12 utility by making the -nokeys and -nocerts
4652 options work when creating a PKCS#12 file. New option -nomac
4653 to omit the mac, NONE can be set for an encryption algorithm.
4654 New code is modified to use the enhanced PKCS12_create()
4655 instead of the low level API.
4658 *) Extend ASN1 encoder to support indefinite length constructed
4659 encoding. This can output sequences tags and octet strings in
4660 this form. Modify pk7_asn1.c to support indefinite length
4661 encoding. This is experimental and needs additional code to
4662 be useful, such as an ASN1 bio and some enhanced streaming
4665 Extend template encode functionality so that tagging is passed
4666 down to the template encoder.
4669 *) Let 'openssl req' fail if an argument to '-newkey' is not
4670 recognized instead of using RSA as a default.
4673 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
4674 As these are not official, they are not included in "ALL";
4675 the "ECCdraft" ciphersuite group alias can be used to select them.
4676 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
4678 *) Add ECDH engine support.
4679 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
4681 *) Add ECDH in new directory crypto/ecdh/.
4682 [Douglas Stebila (Sun Microsystems Laboratories)]
4684 *) Let BN_rand_range() abort with an error after 100 iterations
4685 without success (which indicates a broken PRNG).
4688 *) Change BN_mod_sqrt() so that it verifies that the input value
4689 is really the square of the return value. (Previously,
4690 BN_mod_sqrt would show GIGO behaviour.)
4693 *) Add named elliptic curves over binary fields from X9.62, SECG,
4694 and WAP/WTLS; add OIDs that were still missing.
4696 [Sheueling Chang Shantz and Douglas Stebila
4697 (Sun Microsystems Laboratories)]
4699 *) Extend the EC library for elliptic curves over binary fields
4700 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
4703 EC_GF2m_simple_method
4707 EC_GROUP_new_curve_GF2m
4708 EC_GROUP_set_curve_GF2m
4709 EC_GROUP_get_curve_GF2m
4710 EC_POINT_set_affine_coordinates_GF2m
4711 EC_POINT_get_affine_coordinates_GF2m
4712 EC_POINT_set_compressed_coordinates_GF2m
4714 Point compression for binary fields is disabled by default for
4715 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
4718 As binary polynomials are represented as BIGNUMs, various members
4719 of the EC_GROUP and EC_POINT data structures can be shared
4720 between the implementations for prime fields and binary fields;
4721 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
4722 are essentially identical to their ..._GFp counterparts.
4723 (For simplicity, the '..._GFp' prefix has been dropped from
4724 various internal method names.)
4726 An internal 'field_div' method (similar to 'field_mul' and
4727 'field_sqr') has been added; this is used only for binary fields.
4729 [Sheueling Chang Shantz and Douglas Stebila
4730 (Sun Microsystems Laboratories)]
4732 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
4733 through methods ('mul', 'precompute_mult').
4735 The generic implementations (now internally called 'ec_wNAF_mul'
4736 and 'ec_wNAF_precomputed_mult') remain the default if these
4737 methods are undefined.
4739 [Sheueling Chang Shantz and Douglas Stebila
4740 (Sun Microsystems Laboratories)]
4742 *) New function EC_GROUP_get_degree, which is defined through
4743 EC_METHOD. For curves over prime fields, this returns the bit
4744 length of the modulus.
4746 [Sheueling Chang Shantz and Douglas Stebila
4747 (Sun Microsystems Laboratories)]
4749 *) New functions EC_GROUP_dup, EC_POINT_dup.
4750 (These simply call ..._new and ..._copy).
4752 [Sheueling Chang Shantz and Douglas Stebila
4753 (Sun Microsystems Laboratories)]
4755 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
4756 Polynomials are represented as BIGNUMs (where the sign bit is not
4757 used) in the following functions [macros]:
4760 BN_GF2m_sub [= BN_GF2m_add]
4761 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
4762 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
4763 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
4765 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
4766 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
4767 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
4768 BN_GF2m_cmp [= BN_ucmp]
4770 (Note that only the 'mod' functions are actually for fields GF(2^m).
4771 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
4773 For some functions, an the irreducible polynomial defining a
4774 field can be given as an 'unsigned int[]' with strictly
4775 decreasing elements giving the indices of those bits that are set;
4776 i.e., p[] represents the polynomial
4777 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
4779 p[0] > p[1] > ... > p[k] = 0.
4780 This applies to the following functions:
4785 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
4786 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
4788 BN_GF2m_mod_sqrt_arr
4789 BN_GF2m_mod_solve_quad_arr
4793 Conversion can be performed by the following functions:
4798 bntest.c has additional tests for binary polynomial arithmetic.
4800 Two implementations for BN_GF2m_mod_div() are available.
4801 The default algorithm simply uses BN_GF2m_mod_inv() and
4802 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
4803 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
4804 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
4806 [Sheueling Chang Shantz and Douglas Stebila
4807 (Sun Microsystems Laboratories)]
4809 *) Add new error code 'ERR_R_DISABLED' that can be used when some
4810 functionality is disabled at compile-time.
4811 [Douglas Stebila <douglas.stebila@sun.com>]
4813 *) Change default behaviour of 'openssl asn1parse' so that more
4814 information is visible when viewing, e.g., a certificate:
4816 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
4817 mode the content of non-printable OCTET STRINGs is output in a
4818 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
4819 avoid the appearance of a printable string.
4820 [Nils Larsch <nla@trustcenter.de>]
4822 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
4824 EC_GROUP_set_asn1_flag()
4825 EC_GROUP_get_asn1_flag()
4826 EC_GROUP_set_point_conversion_form()
4827 EC_GROUP_get_point_conversion_form()
4828 These control ASN1 encoding details:
4829 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
4830 has been set to OPENSSL_EC_NAMED_CURVE.
4831 - Points are encoded in uncompressed form by default; options for
4832 asn1_for are as for point2oct, namely
4833 POINT_CONVERSION_COMPRESSED
4834 POINT_CONVERSION_UNCOMPRESSED
4835 POINT_CONVERSION_HYBRID
4837 Also add 'seed' and 'seed_len' members to EC_GROUP with access
4840 EC_GROUP_get0_seed()
4841 EC_GROUP_get_seed_len()
4842 This is used only for ASN1 purposes (so far).
4843 [Nils Larsch <nla@trustcenter.de>]
4845 *) Add 'field_type' member to EC_METHOD, which holds the NID
4846 of the appropriate field type OID. The new function
4847 EC_METHOD_get_field_type() returns this value.
4848 [Nils Larsch <nla@trustcenter.de>]
4853 EC_POINT_point2hex()
4854 EC_POINT_hex2point()
4855 providing useful interfaces to EC_POINT_point2oct() and
4856 EC_POINT_oct2point().
4857 [Nils Larsch <nla@trustcenter.de>]
4859 *) Change internals of the EC library so that the functions
4860 EC_GROUP_set_generator()
4861 EC_GROUP_get_generator()
4862 EC_GROUP_get_order()
4863 EC_GROUP_get_cofactor()
4864 are implemented directly in crypto/ec/ec_lib.c and not dispatched
4865 to methods, which would lead to unnecessary code duplication when
4866 adding different types of curves.
4867 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
4869 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
4870 arithmetic, and such that modified wNAFs are generated
4871 (which avoid length expansion in many cases).
4874 *) Add a function EC_GROUP_check_discriminant() (defined via
4875 EC_METHOD) that verifies that the curve discriminant is non-zero.
4877 Add a function EC_GROUP_check() that makes some sanity tests
4878 on a EC_GROUP, its generator and order. This includes
4879 EC_GROUP_check_discriminant().
4880 [Nils Larsch <nla@trustcenter.de>]
4882 *) Add ECDSA in new directory crypto/ecdsa/.
4884 Add applications 'openssl ecparam' and 'openssl ecdsa'
4885 (these are based on 'openssl dsaparam' and 'openssl dsa').
4887 ECDSA support is also included in various other files across the
4888 library. Most notably,
4889 - 'openssl req' now has a '-newkey ecdsa:file' option;
4890 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
4891 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
4892 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
4893 them suitable for ECDSA where domain parameters must be
4894 extracted before the specific public key;
4895 - ECDSA engine support has been added.
4896 [Nils Larsch <nla@trustcenter.de>]
4898 *) Include some named elliptic curves, and add OIDs from X9.62,
4899 SECG, and WAP/WTLS. Each curve can be obtained from the new
4901 EC_GROUP_new_by_curve_name(),
4902 and the list of available named curves can be obtained with
4903 EC_get_builtin_curves().
4904 Also add a 'curve_name' member to EC_GROUP objects, which can be
4906 EC_GROUP_set_curve_name()
4907 EC_GROUP_get_curve_name()
4908 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
4910 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
4911 was actually never needed) and in BN_mul(). The removal in BN_mul()
4912 required a small change in bn_mul_part_recursive() and the addition
4913 of the functions bn_cmp_part_words(), bn_sub_part_words() and
4914 bn_add_part_words(), which do the same thing as bn_cmp_words(),
4915 bn_sub_words() and bn_add_words() except they take arrays with
4919 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
4921 *) Cleanse PEM buffers before freeing them since they may contain
4923 [Benjamin Bennett <ben@psc.edu>]
4925 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
4926 a ciphersuite string such as "DEFAULT:RSA" cannot enable
4927 authentication-only ciphersuites.
4930 *) Since AES128 and AES256 share a single mask bit in the logic of
4931 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
4932 kludge to work properly if AES128 is available and AES256 isn't.
4935 *) Expand security boundary to match 1.1.1 module.
4938 *) Remove redundant features: hash file source, editing of test vectors
4939 modify fipsld to use external fips_premain.c signature.
4942 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
4943 run algorithm test programs.
4946 *) Make algorithm test programs more tolerant of whitespace.
4949 *) Have SSL/TLS server implementation tolerate "mismatched" record
4950 protocol version while receiving ClientHello even if the
4951 ClientHello is fragmented. (The server can't insist on the
4952 particular protocol version it has chosen before the ServerHello
4953 message has informed the client about his choice.)
4956 *) Load error codes if they are not already present instead of using a
4957 static variable. This allows them to be cleanly unloaded and reloaded.
4960 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
4962 *) Introduce limits to prevent malicious keys being able to
4963 cause a denial of service. (CVE-2006-2940)
4964 [Steve Henson, Bodo Moeller]
4966 *) Fix ASN.1 parsing of certain invalid structures that can result
4967 in a denial of service. (CVE-2006-2937) [Steve Henson]
4969 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
4970 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
4972 *) Fix SSL client code which could crash if connecting to a
4973 malicious SSLv2 server. (CVE-2006-4343)
4974 [Tavis Ormandy and Will Drewry, Google Security Team]
4976 *) Change ciphersuite string processing so that an explicit
4977 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
4978 will no longer include "AES128-SHA"), and any other similar
4979 ciphersuite (same bitmap) from *other* protocol versions (so that
4980 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
4981 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
4982 changes from 0.9.8b and 0.9.8d.
4985 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
4987 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
4988 (CVE-2006-4339) [Ben Laurie and Google Security Team]
4990 *) Change the Unix randomness entropy gathering to use poll() when
4991 possible instead of select(), since the latter has some
4992 undesirable limitations.
4993 [Darryl Miles via Richard Levitte and Bodo Moeller]
4995 *) Disable rogue ciphersuites:
4997 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
4998 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4999 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
5001 The latter two were purportedly from
5002 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
5005 Also deactive the remaining ciphersuites from
5006 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
5007 unofficial, and the ID has long expired.
5010 *) Fix RSA blinding Heisenbug (problems sometimes occured on
5011 dual-core machines) and other potential thread-safety issues.
5014 Changes between 0.9.7i and 0.9.7j [04 May 2006]
5016 *) Adapt fipsld and the build system to link against the validated FIPS
5017 module in FIPS mode.
5020 *) Fixes for VC++ 2005 build under Windows.
5023 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
5024 from a Windows bash shell such as MSYS. It is autodetected from the
5025 "config" script when run from a VC++ environment. Modify standard VC++
5026 build to use fipscanister.o from the GNU make build.
5029 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
5031 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
5032 The value now differs depending on if you build for FIPS or not.
5033 BEWARE! A program linked with a shared FIPSed libcrypto can't be
5034 safely run with a non-FIPSed libcrypto, as it may crash because of
5035 the difference induced by this change.
5038 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
5040 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
5041 (part of SSL_OP_ALL). This option used to disable the
5042 countermeasure against man-in-the-middle protocol-version
5043 rollback in the SSL 2.0 server implementation, which is a bad
5044 idea. (CVE-2005-2969)
5046 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
5047 for Information Security, National Institute of Advanced Industrial
5048 Science and Technology [AIST], Japan)]
5050 *) Minimal support for X9.31 signatures and PSS padding modes. This is
5051 mainly for FIPS compliance and not fully integrated at this stage.
5054 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
5055 the exponentiation using a fixed-length exponent. (Otherwise,
5056 the information leaked through timing could expose the secret key
5057 after many signatures; cf. Bleichenbacher's attack on DSA with
5061 *) Make a new fixed-window mod_exp implementation the default for
5062 RSA, DSA, and DH private-key operations so that the sequence of
5063 squares and multiplies and the memory access pattern are
5064 independent of the particular secret key. This will mitigate
5065 cache-timing and potential related attacks.
5067 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
5068 and this is automatically used by BN_mod_exp_mont() if the new flag
5069 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
5070 will use this BN flag for private exponents unless the flag
5071 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
5072 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
5074 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
5076 *) Change the client implementation for SSLv23_method() and
5077 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
5078 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
5079 (Previously, the SSL 2.0 backwards compatible Client Hello
5080 message format would be used even with SSL_OP_NO_SSLv2.)
5083 *) Add support for smime-type MIME parameter in S/MIME messages which some
5087 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
5088 a threadsafe manner. Modify rsa code to use new function and add calls
5089 to dsa and dh code (which had race conditions before).
5092 *) Include the fixed error library code in the C error file definitions
5093 instead of fixing them up at runtime. This keeps the error code
5094 structures constant.
5097 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
5099 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
5102 *) Fixes for newer kerberos headers. NB: the casts are needed because
5103 the 'length' field is signed on one version and unsigned on another
5104 with no (?) obvious way to tell the difference, without these VC++
5105 complains. Also the "definition" of FAR (blank) is no longer included
5106 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
5107 some needed definitions.
5110 *) Undo Cygwin change.
5113 *) Added support for proxy certificates according to RFC 3820.
5114 Because they may be a security thread to unaware applications,
5115 they must be explicitely allowed in run-time. See
5116 docs/HOWTO/proxy_certificates.txt for further information.
5119 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
5121 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
5122 server and client random values. Previously
5123 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
5124 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
5126 This change has negligible security impact because:
5128 1. Server and client random values still have 24 bytes of pseudo random
5131 2. Server and client random values are sent in the clear in the initial
5134 3. The master secret is derived using the premaster secret (48 bytes in
5135 size for static RSA ciphersuites) as well as client server and random
5138 The OpenSSL team would like to thank the UK NISCC for bringing this issue
5141 [Stephen Henson, reported by UK NISCC]
5143 *) Use Windows randomness collection on Cygwin.
5146 *) Fix hang in EGD/PRNGD query when communication socket is closed
5147 prematurely by EGD/PRNGD.
5148 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
5150 *) Prompt for pass phrases when appropriate for PKCS12 input format.
5153 *) Back-port of selected performance improvements from development
5154 branch, as well as improved support for PowerPC platforms.
5157 *) Add lots of checks for memory allocation failure, error codes to indicate
5158 failure and freeing up memory if a failure occurs.
5159 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
5161 *) Add new -passin argument to dgst.
5164 *) Perform some character comparisons of different types in X509_NAME_cmp:
5165 this is needed for some certificates that reencode DNs into UTF8Strings
5166 (in violation of RFC3280) and can't or wont issue name rollover
5170 *) Make an explicit check during certificate validation to see that
5171 the CA setting in each certificate on the chain is correct. As a
5172 side effect always do the following basic checks on extensions,
5173 not just when there's an associated purpose to the check:
5175 - if there is an unhandled critical extension (unless the user
5176 has chosen to ignore this fault)
5177 - if the path length has been exceeded (if one is set at all)
5178 - that certain extensions fit the associated purpose (if one has
5182 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
5184 *) Avoid a race condition when CRLs are checked in a multi threaded
5185 environment. This would happen due to the reordering of the revoked
5186 entries during signature checking and serial number lookup. Now the
5187 encoding is cached and the serial number sort performed under a lock.
5188 Add new STACK function sk_is_sorted().
5191 *) Add Delta CRL to the extension code.
5194 *) Various fixes to s3_pkt.c so alerts are sent properly.
5195 [David Holmes <d.holmes@f5.com>]
5197 *) Reduce the chances of duplicate issuer name and serial numbers (in
5198 violation of RFC3280) using the OpenSSL certificate creation utilities.
5199 This is done by creating a random 64 bit value for the initial serial
5200 number when a serial number file is created or when a self signed
5201 certificate is created using 'openssl req -x509'. The initial serial
5202 number file is created using 'openssl x509 -next_serial' in CA.pl
5203 rather than being initialized to 1.
5206 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
5208 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
5209 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
5210 [Joe Orton, Steve Henson]
5212 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
5214 [Joe Orton, Steve Henson]
5216 *) Make it possible to have multiple active certificates with the same
5217 subject in the CA index file. This is done only if the keyword
5218 'unique_subject' is set to 'no' in the main CA section (default
5219 if 'CA_default') of the configuration file. The value is saved
5220 with the database itself in a separate index attribute file,
5221 named like the index file with '.attr' appended to the name.
5224 *) X509 verify fixes. Disable broken certificate workarounds when
5225 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
5226 keyUsage extension present. Don't accept CRLs with unhandled critical
5227 extensions: since verify currently doesn't process CRL extensions this
5228 rejects a CRL with *any* critical extensions. Add new verify error codes
5232 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
5233 A clarification of RFC2560 will require the use of OCTET STRINGs and
5234 some implementations cannot handle the current raw format. Since OpenSSL
5235 copies and compares OCSP nonces as opaque blobs without any attempt at
5236 parsing them this should not create any compatibility issues.
5239 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
5240 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
5241 this HMAC (and other) operations are several times slower than OpenSSL
5245 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
5246 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
5248 *) Use the correct content when signing type "other".
5251 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
5253 *) Fix various bugs revealed by running the NISCC test suite:
5255 Stop out of bounds reads in the ASN1 code when presented with
5256 invalid tags (CVE-2003-0543 and CVE-2003-0544).
5258 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
5260 If verify callback ignores invalid public key errors don't try to check
5261 certificate signature with the NULL public key.
5265 *) New -ignore_err option in ocsp application to stop the server
5266 exiting on the first error in a request.
5269 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
5270 if the server requested one: as stated in TLS 1.0 and SSL 3.0
5274 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
5275 extra data after the compression methods not only for TLS 1.0
5276 but also for SSL 3.0 (as required by the specification).
5277 [Bodo Moeller; problem pointed out by Matthias Loepfe]
5279 *) Change X509_certificate_type() to mark the key as exported/exportable
5280 when it's 512 *bits* long, not 512 bytes.
5283 *) Change AES_cbc_encrypt() so it outputs exact multiple of
5284 blocks during encryption.
5287 *) Various fixes to base64 BIO and non blocking I/O. On write
5288 flushes were not handled properly if the BIO retried. On read
5289 data was not being buffered properly and had various logic bugs.
5290 This also affects blocking I/O when the data being decoded is a
5294 *) Various S/MIME bugfixes and compatibility changes:
5295 output correct application/pkcs7 MIME type if
5296 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
5297 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
5298 of files as .eml work). Correctly handle very long lines in MIME
5302 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
5304 *) Countermeasure against the Klima-Pokorny-Rosa extension of
5305 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
5306 a protocol version number mismatch like a decryption error
5307 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
5310 *) Turn on RSA blinding by default in the default implementation
5311 to avoid a timing attack. Applications that don't want it can call
5312 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
5313 They would be ill-advised to do so in most cases.
5314 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
5316 *) Change RSA blinding code so that it works when the PRNG is not
5317 seeded (in this case, the secret RSA exponent is abused as
5318 an unpredictable seed -- if it is not unpredictable, there
5319 is no point in blinding anyway). Make RSA blinding thread-safe
5320 by remembering the creator's thread ID in rsa->blinding and
5321 having all other threads use local one-time blinding factors
5322 (this requires more computation than sharing rsa->blinding, but
5323 avoids excessive locking; and if an RSA object is not shared
5324 between threads, blinding will still be very fast).
5327 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
5328 ENGINE as defaults for all supported algorithms irrespective of
5329 the 'flags' parameter. 'flags' is now honoured, so applications
5330 should make sure they are passing it correctly.
5333 *) Target "mingw" now allows native Windows code to be generated in
5334 the Cygwin environment as well as with the MinGW compiler.
5337 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
5339 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
5340 via timing by performing a MAC computation even if incorrrect
5341 block cipher padding has been found. This is a countermeasure
5342 against active attacks where the attacker has to distinguish
5343 between bad padding and a MAC verification error. (CVE-2003-0078)
5345 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
5346 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
5347 Martin Vuagnoux (EPFL, Ilion)]
5349 *) Make the no-err option work as intended. The intention with no-err
5350 is not to have the whole error stack handling routines removed from
5351 libcrypto, it's only intended to remove all the function name and
5352 reason texts, thereby removing some of the footprint that may not
5353 be interesting if those errors aren't displayed anyway.
5355 NOTE: it's still possible for any application or module to have it's
5356 own set of error texts inserted. The routines are there, just not
5357 used by default when no-err is given.
5360 *) Add support for FreeBSD on IA64.
5361 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
5363 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
5364 Kerberos function mit_des_cbc_cksum(). Before this change,
5365 the value returned by DES_cbc_cksum() was like the one from
5366 mit_des_cbc_cksum(), except the bytes were swapped.
5367 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
5369 *) Allow an application to disable the automatic SSL chain building.
5370 Before this a rather primitive chain build was always performed in
5371 ssl3_output_cert_chain(): an application had no way to send the
5372 correct chain if the automatic operation produced an incorrect result.
5374 Now the chain builder is disabled if either:
5376 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
5378 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
5380 The reasoning behind this is that an application would not want the
5381 auto chain building to take place if extra chain certificates are
5382 present and it might also want a means of sending no additional
5383 certificates (for example the chain has two certificates and the
5387 *) Add the possibility to build without the ENGINE framework.
5388 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5390 *) Under Win32 gmtime() can return NULL: check return value in
5391 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
5394 *) DSA routines: under certain error conditions uninitialized BN objects
5395 could be freed. Solution: make sure initialization is performed early
5396 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
5397 Nils Larsch <nla@trustcenter.de> via PR#459)
5400 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
5401 checked on reconnect on the client side, therefore session resumption
5402 could still fail with a "ssl session id is different" error. This
5403 behaviour is masked when SSL_OP_ALL is used due to
5404 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
5405 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5406 followup to PR #377.
5409 *) IA-32 assembler support enhancements: unified ELF targets, support
5410 for SCO/Caldera platforms, fix for Cygwin shared build.
5413 *) Add support for FreeBSD on sparc64. As a consequence, support for
5414 FreeBSD on non-x86 processors is separate from x86 processors on
5415 the config script, much like the NetBSD support.
5416 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
5418 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
5420 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
5423 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
5424 code (06) was taken as the first octet of the session ID and the last
5425 octet was ignored consequently. As a result SSLv2 client side session
5426 caching could not have worked due to the session ID mismatch between
5428 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5432 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
5433 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
5437 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
5438 seems that in spite of existing for more than a year, many application
5439 author have done nothing to provide the necessary callbacks, which
5440 means that this particular engine will not work properly anywhere.
5441 This is a very unfortunate situation which forces us, in the name
5442 of usability, to give the hw_ncipher.c a static lock, which is part
5444 NOTE: This is for the 0.9.7 series ONLY. This hack will never
5445 appear in 0.9.8 or later. We EXPECT application authors to have
5446 dealt properly with this when 0.9.8 is released (unless we actually
5447 make such changes in the libcrypto locking code that changes will
5448 have to be made anyway).
5451 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
5452 octets have been read, EOF or an error occurs. Without this change
5453 some truncated ASN1 structures will not produce an error.
5456 *) Disable Heimdal support, since it hasn't been fully implemented.
5457 Still give the possibility to force the use of Heimdal, but with
5458 warnings and a request that patches get sent to openssl-dev.
5461 *) Add the VC-CE target, introduce the WINCE sysname, and add
5462 INSTALL.WCE and appropriate conditionals to make it build.
5463 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5465 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
5466 cygssl-x.y.z.dll, where x, y and z are the major, minor and
5467 edit numbers of the version.
5468 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
5470 *) Introduce safe string copy and catenation functions
5471 (BUF_strlcpy() and BUF_strlcat()).
5472 [Ben Laurie (CHATS) and Richard Levitte]
5474 *) Avoid using fixed-size buffers for one-line DNs.
5475 [Ben Laurie (CHATS)]
5477 *) Add BUF_MEM_grow_clean() to avoid information leakage when
5478 resizing buffers containing secrets, and use where appropriate.
5479 [Ben Laurie (CHATS)]
5481 *) Avoid using fixed size buffers for configuration file location.
5482 [Ben Laurie (CHATS)]
5484 *) Avoid filename truncation for various CA files.
5485 [Ben Laurie (CHATS)]
5487 *) Use sizeof in preference to magic numbers.
5488 [Ben Laurie (CHATS)]
5490 *) Avoid filename truncation in cert requests.
5491 [Ben Laurie (CHATS)]
5493 *) Add assertions to check for (supposedly impossible) buffer
5495 [Ben Laurie (CHATS)]
5497 *) Don't cache truncated DNS entries in the local cache (this could
5498 potentially lead to a spoofing attack).
5499 [Ben Laurie (CHATS)]
5501 *) Fix various buffers to be large enough for hex/decimal
5502 representations in a platform independent manner.
5503 [Ben Laurie (CHATS)]
5505 *) Add CRYPTO_realloc_clean() to avoid information leakage when
5506 resizing buffers containing secrets, and use where appropriate.
5507 [Ben Laurie (CHATS)]
5509 *) Add BIO_indent() to avoid much slightly worrying code to do
5511 [Ben Laurie (CHATS)]
5513 *) Convert sprintf()/BIO_puts() to BIO_printf().
5514 [Ben Laurie (CHATS)]
5516 *) buffer_gets() could terminate with the buffer only half
5518 [Ben Laurie (CHATS)]
5520 *) Add assertions to prevent user-supplied crypto functions from
5521 overflowing internal buffers by having large block sizes, etc.
5522 [Ben Laurie (CHATS)]
5524 *) New OPENSSL_assert() macro (similar to assert(), but enabled
5526 [Ben Laurie (CHATS)]
5528 *) Eliminate unused copy of key in RC4.
5529 [Ben Laurie (CHATS)]
5531 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
5532 [Ben Laurie (CHATS)]
5534 *) Fix off-by-one error in EGD path.
5535 [Ben Laurie (CHATS)]
5537 *) If RANDFILE path is too long, ignore instead of truncating.
5538 [Ben Laurie (CHATS)]
5540 *) Eliminate unused and incorrectly sized X.509 structure
5542 [Ben Laurie (CHATS)]
5544 *) Eliminate unused and dangerous function knumber().
5545 [Ben Laurie (CHATS)]
5547 *) Eliminate unused and dangerous structure, KSSL_ERR.
5548 [Ben Laurie (CHATS)]
5550 *) Protect against overlong session ID context length in an encoded
5551 session object. Since these are local, this does not appear to be
5553 [Ben Laurie (CHATS)]
5555 *) Change from security patch (see 0.9.6e below) that did not affect
5556 the 0.9.6 release series:
5558 Remote buffer overflow in SSL3 protocol - an attacker could
5559 supply an oversized master key in Kerberos-enabled versions.
5561 [Ben Laurie (CHATS)]
5563 *) Change the SSL kerb5 codes to match RFC 2712.
5566 *) Make -nameopt work fully for req and add -reqopt switch.
5567 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
5569 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
5570 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
5572 *) Make sure tests can be performed even if the corresponding algorithms
5573 have been removed entirely. This was also the last step to make
5574 OpenSSL compilable with DJGPP under all reasonable conditions.
5575 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
5577 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
5578 to allow version independent disabling of normally unselected ciphers,
5579 which may be activated as a side-effect of selecting a single cipher.
5581 (E.g., cipher list string "RSA" enables ciphersuites that are left
5582 out of "ALL" because they do not provide symmetric encryption.
5583 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
5584 [Lutz Jaenicke, Bodo Moeller]
5586 *) Add appropriate support for separate platform-dependent build
5587 directories. The recommended way to make a platform-dependent
5588 build directory is the following (tested on Linux), maybe with
5591 # Place yourself outside of the OpenSSL source tree. In
5592 # this example, the environment variable OPENSSL_SOURCE
5593 # is assumed to contain the absolute OpenSSL source directory.
5594 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
5595 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
5596 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
5597 mkdir -p `dirname $F`
5598 ln -s $OPENSSL_SOURCE/$F $F
5601 To be absolutely sure not to disturb the source tree, a "make clean"
5602 is a good thing. If it isn't successfull, don't worry about it,
5603 it probably means the source directory is very clean.
5606 *) Make sure any ENGINE control commands make local copies of string
5607 pointers passed to them whenever necessary. Otherwise it is possible
5608 the caller may have overwritten (or deallocated) the original string
5609 data when a later ENGINE operation tries to use the stored values.
5610 [Götz Babin-Ebell <babinebell@trustcenter.de>]
5612 *) Improve diagnostics in file reading and command-line digests.
5613 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
5615 *) Add AES modes CFB and OFB to the object database. Correct an
5616 error in AES-CFB decryption.
5619 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
5620 allows existing EVP_CIPHER_CTX structures to be reused after
5621 calling EVP_*Final(). This behaviour is used by encryption
5622 BIOs and some applications. This has the side effect that
5623 applications must explicitly clean up cipher contexts with
5624 EVP_CIPHER_CTX_cleanup() or they will leak memory.
5627 *) Check the values of dna and dnb in bn_mul_recursive before calling
5628 bn_mul_comba (a non zero value means the a or b arrays do not contain
5629 n2 elements) and fallback to bn_mul_normal if either is not zero.
5632 *) Fix escaping of non-ASCII characters when using the -subj option
5633 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
5636 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
5637 form for "surname", serialNumber has no short form.
5638 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
5639 therefore remove "mail" short name for "internet 7".
5640 The OID for unique identifiers in X509 certificates is
5641 x500UniqueIdentifier, not uniqueIdentifier.
5642 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
5645 *) Add an "init" command to the ENGINE config module and auto initialize
5646 ENGINEs. Without any "init" command the ENGINE will be initialized
5647 after all ctrl commands have been executed on it. If init=1 the
5648 ENGINE is initailized at that point (ctrls before that point are run
5649 on the uninitialized ENGINE and after on the initialized one). If
5650 init=0 then the ENGINE will not be iniatialized at all.
5653 *) Fix the 'app_verify_callback' interface so that the user-defined
5654 argument is actually passed to the callback: In the
5655 SSL_CTX_set_cert_verify_callback() prototype, the callback
5656 declaration has been changed from
5659 int (*cb)(X509_STORE_CTX *,void *);
5660 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
5661 i=s->ctx->app_verify_callback(&ctx)
5662 has been changed into
5663 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
5665 To update applications using SSL_CTX_set_cert_verify_callback(),
5666 a dummy argument can be added to their callback functions.
5667 [D. K. Smetters <smetters@parc.xerox.com>]
5669 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
5670 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
5672 *) Add and OPENSSL_LOAD_CONF define which will cause
5673 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
5674 This allows older applications to transparently support certain
5675 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
5676 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
5677 load the config file and OPENSSL_add_all_algorithms_conf() which will
5678 always load it have also been added.
5681 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
5682 Adjust NIDs and EVP layer.
5683 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
5685 *) Config modules support in openssl utility.
5687 Most commands now load modules from the config file,
5688 though in a few (such as version) this isn't done
5689 because it couldn't be used for anything.
5691 In the case of ca and req the config file used is
5692 the same as the utility itself: that is the -config
5693 command line option can be used to specify an
5697 *) Move default behaviour from OPENSSL_config(). If appname is NULL
5698 use "openssl_conf" if filename is NULL use default openssl config file.
5701 *) Add an argument to OPENSSL_config() to allow the use of an alternative
5702 config section name. Add a new flag to tolerate a missing config file
5703 and move code to CONF_modules_load_file().
5706 *) Support for crypto accelerator cards from Accelerated Encryption
5707 Processing, www.aep.ie. (Use engine 'aep')
5708 The support was copied from 0.9.6c [engine] and adapted/corrected
5709 to work with the new engine framework.
5710 [AEP Inc. and Richard Levitte]
5712 *) Support for SureWare crypto accelerator cards from Baltimore
5713 Technologies. (Use engine 'sureware')
5714 The support was copied from 0.9.6c [engine] and adapted
5715 to work with the new engine framework.
5718 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
5719 make the newer ENGINE framework commands for the CHIL engine work.
5720 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
5722 *) Make it possible to produce shared libraries on ReliantUNIX.
5723 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
5725 *) Add the configuration target debug-linux-ppro.
5726 Make 'openssl rsa' use the general key loading routines
5727 implemented in apps.c, and make those routines able to
5728 handle the key format FORMAT_NETSCAPE and the variant
5730 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5732 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
5733 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5735 *) Add -keyform to rsautl, and document -engine.
5736 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
5738 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
5739 BIO_R_NO_SUCH_FILE error code rather than the generic
5740 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
5743 *) Add new functions
5745 ERR_peek_last_error_line
5746 ERR_peek_last_error_line_data.
5747 These are similar to
5750 ERR_peek_error_line_data,
5751 but report on the latest error recorded rather than the first one
5752 still in the error queue.
5753 [Ben Laurie, Bodo Moeller]
5755 *) default_algorithms option in ENGINE config module. This allows things
5757 default_algorithms = ALL
5758 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
5761 *) Prelminary ENGINE config module.
5764 *) New experimental application configuration code.
5767 *) Change the AES code to follow the same name structure as all other
5768 symmetric ciphers, and behave the same way. Move everything to
5769 the directory crypto/aes, thereby obsoleting crypto/rijndael.
5770 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
5772 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
5773 [Ben Laurie and Theo de Raadt]
5775 *) Add option to output public keys in req command.
5776 [Massimiliano Pala madwolf@openca.org]
5778 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
5779 (up to about 10% better than before for P-192 and P-224).
5782 *) New functions/macros
5784 SSL_CTX_set_msg_callback(ctx, cb)
5785 SSL_CTX_set_msg_callback_arg(ctx, arg)
5786 SSL_set_msg_callback(ssl, cb)
5787 SSL_set_msg_callback_arg(ssl, arg)
5789 to request calling a callback function
5791 void cb(int write_p, int version, int content_type,
5792 const void *buf, size_t len, SSL *ssl, void *arg)
5794 whenever a protocol message has been completely received
5795 (write_p == 0) or sent (write_p == 1). Here 'version' is the
5796 protocol version according to which the SSL library interprets
5797 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
5798 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
5799 the content type as defined in the SSL 3.0/TLS 1.0 protocol
5800 specification (change_cipher_spec(20), alert(21), handshake(22)).
5801 'buf' and 'len' point to the actual message, 'ssl' to the
5802 SSL object, and 'arg' is the application-defined value set by
5803 SSL[_CTX]_set_msg_callback_arg().
5805 'openssl s_client' and 'openssl s_server' have new '-msg' options
5806 to enable a callback that displays all protocol messages.
5809 *) Change the shared library support so shared libraries are built as
5810 soon as the corresponding static library is finished, and thereby get
5811 openssl and the test programs linked against the shared library.
5812 This still only happens when the keyword "shard" has been given to
5813 the configuration scripts.
5815 NOTE: shared library support is still an experimental thing, and
5816 backward binary compatibility is still not guaranteed.
5817 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
5819 *) Add support for Subject Information Access extension.
5820 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
5822 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
5823 additional bytes when new memory had to be allocated, not just
5824 when reusing an existing buffer.
5827 *) New command line and configuration option 'utf8' for the req command.
5828 This allows field values to be specified as UTF8 strings.
5831 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
5832 runs for the former and machine-readable output for the latter.
5835 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
5836 of the e-mail address in the DN (i.e., it will go into a certificate
5837 extension only). The new configuration file option 'email_in_dn = no'
5838 has the same effect.
5839 [Massimiliano Pala madwolf@openca.org]
5841 *) Change all functions with names starting with des_ to be starting
5842 with DES_ instead. Add wrappers that are compatible with libdes,
5843 but are named _ossl_old_des_*. Finally, add macros that map the
5844 des_* symbols to the corresponding _ossl_old_des_* if libdes
5845 compatibility is desired. If OpenSSL 0.9.6c compatibility is
5846 desired, the des_* symbols will be mapped to DES_*, with one
5849 Since we provide two compatibility mappings, the user needs to
5850 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
5851 compatibility is desired. The default (i.e., when that macro
5852 isn't defined) is OpenSSL 0.9.6c compatibility.
5854 There are also macros that enable and disable the support of old
5855 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
5856 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
5857 are defined, the default will apply: to support the old des routines.
5859 In either case, one must include openssl/des.h to get the correct
5860 definitions. Do not try to just include openssl/des_old.h, that
5863 NOTE: This is a major break of an old API into a new one. Software
5864 authors are encouraged to switch to the DES_ style functions. Some
5865 time in the future, des_old.h and the libdes compatibility functions
5866 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
5867 default), and then completely removed.
5870 *) Test for certificates which contain unsupported critical extensions.
5871 If such a certificate is found during a verify operation it is
5872 rejected by default: this behaviour can be overridden by either
5873 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
5874 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
5875 X509_supported_extension() has also been added which returns 1 if a
5876 particular extension is supported.
5879 *) Modify the behaviour of EVP cipher functions in similar way to digests
5880 to retain compatibility with existing code.
5883 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
5884 compatibility with existing code. In particular the 'ctx' parameter does
5885 not have to be to be initialized before the call to EVP_DigestInit() and
5886 it is tidied up after a call to EVP_DigestFinal(). New function
5887 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
5888 EVP_MD_CTX_copy() changed to not require the destination to be
5889 initialized valid and new function EVP_MD_CTX_copy_ex() added which
5890 requires the destination to be valid.
5892 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
5893 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
5896 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
5897 so that complete 'Handshake' protocol structures are kept in memory
5898 instead of overwriting 'msg_type' and 'length' with 'body' data.
5901 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
5902 [Massimo Santin via Richard Levitte]
5904 *) Major restructuring to the underlying ENGINE code. This includes
5905 reduction of linker bloat, separation of pure "ENGINE" manipulation
5906 (initialisation, etc) from functionality dealing with implementations
5907 of specific crypto iterfaces. This change also introduces integrated
5908 support for symmetric ciphers and digest implementations - so ENGINEs
5909 can now accelerate these by providing EVP_CIPHER and EVP_MD
5910 implementations of their own. This is detailed in crypto/engine/README
5911 as it couldn't be adequately described here. However, there are a few
5912 API changes worth noting - some RSA, DSA, DH, and RAND functions that
5913 were changed in the original introduction of ENGINE code have now
5914 reverted back - the hooking from this code to ENGINE is now a good
5915 deal more passive and at run-time, operations deal directly with
5916 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
5917 dereferencing through an ENGINE pointer any more. Also, the ENGINE
5918 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
5919 they were not being used by the framework as there is no concept of a
5920 BIGNUM_METHOD and they could not be generalised to the new
5921 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
5922 ENGINE_cpy() has been removed as it cannot be consistently defined in
5926 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
5929 *) Change mkdef.pl to sort symbols that get the same entry number,
5930 and make sure the automatically generated functions ERR_load_*
5931 become part of libeay.num as well.
5934 *) New function SSL_renegotiate_pending(). This returns true once
5935 renegotiation has been requested (either SSL_renegotiate() call
5936 or HelloRequest/ClientHello receveived from the peer) and becomes
5937 false once a handshake has been completed.
5938 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
5939 sends a HelloRequest, but does not ensure that a handshake takes
5940 place. SSL_renegotiate_pending() is useful for checking if the
5941 client has followed the request.)
5944 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
5945 By default, clients may request session resumption even during
5946 renegotiation (if session ID contexts permit); with this option,
5947 session resumption is possible only in the first handshake.
5949 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
5950 more bits available for options that should not be part of
5951 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
5954 *) Add some demos for certificate and certificate request creation.
5957 *) Make maximum certificate chain size accepted from the peer application
5958 settable (SSL*_get/set_max_cert_list()), as proposed by
5959 "Douglas E. Engert" <deengert@anl.gov>.
5962 *) Add support for shared libraries for Unixware-7
5963 (Boyd Lynn Gerber <gerberb@zenez.com>).
5966 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
5967 be done prior to destruction. Use this to unload error strings from
5968 ENGINEs that load their own error strings. NB: This adds two new API
5969 functions to "get" and "set" this destroy handler in an ENGINE.
5972 *) Alter all existing ENGINE implementations (except "openssl" and
5973 "openbsd") to dynamically instantiate their own error strings. This
5974 makes them more flexible to be built both as statically-linked ENGINEs
5975 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
5976 Also, add stub code to each that makes building them as self-contained
5977 shared-libraries easier (see README.ENGINE).
5980 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
5981 implementations into applications that are completely implemented in
5982 self-contained shared-libraries. The "dynamic" ENGINE exposes control
5983 commands that can be used to configure what shared-library to load and
5984 to control aspects of the way it is handled. Also, made an update to
5985 the README.ENGINE file that brings its information up-to-date and
5986 provides some information and instructions on the "dynamic" ENGINE
5987 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
5990 *) Make it possible to unload ranges of ERR strings with a new
5991 "ERR_unload_strings" function.
5994 *) Add a copy() function to EVP_MD.
5997 *) Make EVP_MD routines take a context pointer instead of just the
5998 md_data void pointer.
6001 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
6002 that the digest can only process a single chunk of data
6003 (typically because it is provided by a piece of
6004 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
6005 is only going to provide a single chunk of data, and hence the
6006 framework needn't accumulate the data for oneshot drivers.
6009 *) As with "ERR", make it possible to replace the underlying "ex_data"
6010 functions. This change also alters the storage and management of global
6011 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
6012 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
6013 index counters. The API functions that use this state have been changed
6014 to take a "class_index" rather than pointers to the class's local STACK
6015 and counter, and there is now an API function to dynamically create new
6016 classes. This centralisation allows us to (a) plug a lot of the
6017 thread-safety problems that existed, and (b) makes it possible to clean
6018 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
6019 such data would previously have always leaked in application code and
6020 workarounds were in place to make the memory debugging turn a blind eye
6021 to it. Application code that doesn't use this new function will still
6022 leak as before, but their memory debugging output will announce it now
6023 rather than letting it slide.
6025 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
6026 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
6027 has a return value to indicate success or failure.
6030 *) Make it possible to replace the underlying "ERR" functions such that the
6031 global state (2 LHASH tables and 2 locks) is only used by the "default"
6032 implementation. This change also adds two functions to "get" and "set"
6033 the implementation prior to it being automatically set the first time
6034 any other ERR function takes place. Ie. an application can call "get",
6035 pass the return value to a module it has just loaded, and that module
6036 can call its own "set" function using that value. This means the
6037 module's "ERR" operations will use (and modify) the error state in the
6038 application and not in its own statically linked copy of OpenSSL code.
6041 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
6042 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
6043 the operation, and provides a more encapsulated way for external code
6044 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
6045 to use these functions rather than manually incrementing the counts.
6047 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
6050 *) Add EVP test program.
6053 *) Add symmetric cipher support to ENGINE. Expect the API to change!
6056 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
6057 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
6058 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
6059 These allow a CRL to be built without having to access X509_CRL fields
6060 directly. Modify 'ca' application to use new functions.
6063 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
6064 bug workarounds. Rollback attack detection is a security feature.
6065 The problem will only arise on OpenSSL servers when TLSv1 is not
6066 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
6067 Software authors not wanting to support TLSv1 will have special reasons
6068 for their choice and can explicitly enable this option.
6069 [Bodo Moeller, Lutz Jaenicke]
6071 *) Rationalise EVP so it can be extended: don't include a union of
6072 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
6073 (similar to those existing for EVP_CIPHER_CTX).
6078 EVP_MD_CTX_init(&md); /* new function call */
6079 EVP_DigestInit(&md, EVP_sha1());
6080 EVP_DigestUpdate(&md, in, len);
6081 EVP_DigestFinal(&md, out, NULL);
6082 EVP_MD_CTX_cleanup(&md); /* new function call */
6086 *) Make DES key schedule conform to the usual scheme, as well as
6087 correcting its structure. This means that calls to DES functions
6088 now have to pass a pointer to a des_key_schedule instead of a
6089 plain des_key_schedule (which was actually always a pointer
6092 des_key_schedule ks;
6094 des_set_key_checked(..., &ks);
6095 des_ncbc_encrypt(..., &ks, ...);
6097 (Note that a later change renames 'des_...' into 'DES_...'.)
6100 *) Initial reduction of linker bloat: the use of some functions, such as
6101 PEM causes large amounts of unused functions to be linked in due to
6102 poor organisation. For example pem_all.c contains every PEM function
6103 which has a knock on effect of linking in large amounts of (unused)
6104 ASN1 code. Grouping together similar functions and splitting unrelated
6105 functions prevents this.
6108 *) Cleanup of EVP macros.
6111 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
6112 correct _ecb suffix.
6115 *) Add initial OCSP responder support to ocsp application. The
6116 revocation information is handled using the text based index
6117 use by the ca application. The responder can either handle
6118 requests generated internally, supplied in files (for example
6119 via a CGI script) or using an internal minimal server.
6122 *) Add configuration choices to get zlib compression for TLS.
6125 *) Changes to Kerberos SSL for RFC 2712 compliance:
6126 1. Implemented real KerberosWrapper, instead of just using
6127 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
6128 2. Implemented optional authenticator field of KerberosWrapper.
6130 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
6131 and authenticator structs; see crypto/krb5/.
6133 Generalized Kerberos calls to support multiple Kerberos libraries.
6134 [Vern Staats <staatsvr@asc.hpc.mil>,
6135 Jeffrey Altman <jaltman@columbia.edu>
6136 via Richard Levitte]
6138 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
6139 already does with RSA. testdsa.h now has 'priv_key/pub_key'
6140 values for each of the key sizes rather than having just
6141 parameters (and 'speed' generating keys each time).
6144 *) Speed up EVP routines.
6147 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
6148 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
6149 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
6150 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
6152 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
6153 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
6154 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
6157 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
6159 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
6162 *) Added the OS2-EMX target.
6163 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
6165 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
6166 to support NCONF routines in extension code. New function CONF_set_nconf()
6167 to allow functions which take an NCONF to also handle the old LHASH
6168 structure: this means that the old CONF compatible routines can be
6169 retained (in particular wrt extensions) without having to duplicate the
6170 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
6173 *) Enhance the general user interface with mechanisms for inner control
6174 and with possibilities to have yes/no kind of prompts.
6177 *) Change all calls to low level digest routines in the library and
6178 applications to use EVP. Add missing calls to HMAC_cleanup() and
6179 don't assume HMAC_CTX can be copied using memcpy().
6180 [Verdon Walker <VWalker@novell.com>, Steve Henson]
6182 *) Add the possibility to control engines through control names but with
6183 arbitrary arguments instead of just a string.
6184 Change the key loaders to take a UI_METHOD instead of a callback
6185 function pointer. NOTE: this breaks binary compatibility with earlier
6186 versions of OpenSSL [engine].
6187 Adapt the nCipher code for these new conditions and add a card insertion
6191 *) Enhance the general user interface with mechanisms to better support
6192 dialog box interfaces, application-defined prompts, the possibility
6193 to use defaults (for example default passwords from somewhere else)
6194 and interrupts/cancellations.
6197 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
6198 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
6201 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
6202 tidy up some unnecessarily weird code in 'sk_new()').
6203 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
6205 *) Change the key loading routines for ENGINEs to use the same kind
6206 callback (pem_password_cb) as all other routines that need this
6210 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
6211 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
6212 than this minimum value is recommended.
6215 *) New random seeder for OpenVMS, using the system process statistics
6216 that are easily reachable.
6219 *) Windows apparently can't transparently handle global
6220 variables defined in DLLs. Initialisations such as:
6222 const ASN1_ITEM *it = &ASN1_INTEGER_it;
6224 wont compile. This is used by the any applications that need to
6225 declare their own ASN1 modules. This was fixed by adding the option
6226 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
6227 needed for static libraries under Win32.
6230 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
6231 setting of purpose and trust fields. New X509_STORE trust and
6232 purpose functions and tidy up setting in other SSL functions.
6235 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
6236 structure. These are inherited by X509_STORE_CTX when it is
6237 initialised. This allows various defaults to be set in the
6238 X509_STORE structure (such as flags for CRL checking and custom
6239 purpose or trust settings) for functions which only use X509_STORE_CTX
6240 internally such as S/MIME.
6242 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
6243 trust settings if they are not set in X509_STORE. This allows X509_STORE
6244 purposes and trust (in S/MIME for example) to override any set by default.
6246 Add command line options for CRL checking to smime, s_client and s_server
6250 *) Initial CRL based revocation checking. If the CRL checking flag(s)
6251 are set then the CRL is looked up in the X509_STORE structure and
6252 its validity and signature checked, then if the certificate is found
6253 in the CRL the verify fails with a revoked error.
6255 Various new CRL related callbacks added to X509_STORE_CTX structure.
6257 Command line options added to 'verify' application to support this.
6259 This needs some additional work, such as being able to handle multiple
6260 CRLs with different times, extension based lookup (rather than just
6261 by subject name) and ultimately more complete V2 CRL extension
6265 *) Add a general user interface API (crypto/ui/). This is designed
6266 to replace things like des_read_password and friends (backward
6267 compatibility functions using this new API are provided).
6268 The purpose is to remove prompting functions from the DES code
6269 section as well as provide for prompting through dialog boxes in
6270 a window system and the like.
6273 *) Add "ex_data" support to ENGINE so implementations can add state at a
6274 per-structure level rather than having to store it globally.
6277 *) Make it possible for ENGINE structures to be copied when retrieved by
6278 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
6279 This causes the "original" ENGINE structure to act like a template,
6280 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
6281 operational state can be localised to each ENGINE structure, despite the
6282 fact they all share the same "methods". New ENGINE structures returned in
6283 this case have no functional references and the return value is the single
6284 structural reference. This matches the single structural reference returned
6285 by ENGINE_by_id() normally, when it is incremented on the pre-existing
6289 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
6290 needs to match any other type at all we need to manually clear the
6294 *) Changes to the "openssl engine" utility to include;
6295 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
6296 about an ENGINE's available control commands.
6297 - executing control commands from command line arguments using the
6298 '-pre' and '-post' switches. '-post' is only used if '-t' is
6299 specified and the ENGINE is successfully initialised. The syntax for
6300 the individual commands are colon-separated, for example;
6301 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
6304 *) New dynamic control command support for ENGINEs. ENGINEs can now
6305 declare their own commands (numbers), names (strings), descriptions,
6306 and input types for run-time discovery by calling applications. A
6307 subset of these commands are implicitly classed as "executable"
6308 depending on their input type, and only these can be invoked through
6309 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
6310 can be based on user input, config files, etc). The distinction is
6311 that "executable" commands cannot return anything other than a boolean
6312 result and can only support numeric or string input, whereas some
6313 discoverable commands may only be for direct use through
6314 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
6315 pointers, or other custom uses. The "executable" commands are to
6316 support parameterisations of ENGINE behaviour that can be
6317 unambiguously defined by ENGINEs and used consistently across any
6318 OpenSSL-based application. Commands have been added to all the
6319 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
6320 control over shared-library paths without source code alterations.
6323 *) Changed all ENGINE implementations to dynamically allocate their
6324 ENGINEs rather than declaring them statically. Apart from this being
6325 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
6326 this also allows the implementations to compile without using the
6327 internal engine_int.h header.
6330 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
6331 'const' value. Any code that should be able to modify a RAND_METHOD
6332 should already have non-const pointers to it (ie. they should only
6333 modify their own ones).
6336 *) Made a variety of little tweaks to the ENGINE code.
6337 - "atalla" and "ubsec" string definitions were moved from header files
6338 to C code. "nuron" string definitions were placed in variables
6339 rather than hard-coded - allowing parameterisation of these values
6340 later on via ctrl() commands.
6341 - Removed unused "#if 0"'d code.
6342 - Fixed engine list iteration code so it uses ENGINE_free() to release
6343 structural references.
6344 - Constified the RAND_METHOD element of ENGINE structures.
6345 - Constified various get/set functions as appropriate and added
6346 missing functions (including a catch-all ENGINE_cpy that duplicates
6347 all ENGINE values onto a new ENGINE except reference counts/state).
6348 - Removed NULL parameter checks in get/set functions. Setting a method
6349 or function to NULL is a way of cancelling out a previously set
6350 value. Passing a NULL ENGINE parameter is just plain stupid anyway
6351 and doesn't justify the extra error symbols and code.
6352 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
6353 flags from engine_int.h to engine.h.
6354 - Changed prototypes for ENGINE handler functions (init(), finish(),
6355 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
6358 *) Implement binary inversion algorithm for BN_mod_inverse in addition
6359 to the algorithm using long division. The binary algorithm can be
6360 used only if the modulus is odd. On 32-bit systems, it is faster
6361 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
6362 roughly 5-15% for 256-bit moduli), so we use it only for moduli
6363 up to 450 bits. In 64-bit environments, the binary algorithm
6364 appears to be advantageous for much longer moduli; here we use it
6365 for moduli up to 2048 bits.
6368 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
6369 could not support the combine flag in choice fields.
6372 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
6373 extensions from a certificate request to the certificate.
6376 *) Allow multiple 'certopt' and 'nameopt' options to be separated
6377 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
6378 file: this allows the display of the certificate about to be
6379 signed to be customised, to allow certain fields to be included
6380 or excluded and extension details. The old system didn't display
6381 multicharacter strings properly, omitted fields not in the policy
6382 and couldn't display additional details such as extensions.
6385 *) Function EC_POINTs_mul for multiple scalar multiplication
6386 of an arbitrary number of elliptic curve points
6387 \sum scalars[i]*points[i],
6388 optionally including the generator defined for the EC_GROUP:
6389 scalar*generator + \sum scalars[i]*points[i].
6391 EC_POINT_mul is a simple wrapper function for the typical case
6392 that the point list has just one item (besides the optional
6396 *) First EC_METHODs for curves over GF(p):
6398 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
6399 operations and provides various method functions that can also
6400 operate with faster implementations of modular arithmetic.
6402 EC_GFp_mont_method() reuses most functions that are part of
6403 EC_GFp_simple_method, but uses Montgomery arithmetic.
6405 [Bodo Moeller; point addition and point doubling
6406 implementation directly derived from source code provided by
6407 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
6409 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
6410 crypto/ec/ec_lib.c):
6412 Curves are EC_GROUP objects (with an optional group generator)
6413 based on EC_METHODs that are built into the library.
6415 Points are EC_POINT objects based on EC_GROUP objects.
6417 Most of the framework would be able to handle curves over arbitrary
6418 finite fields, but as there are no obvious types for fields other
6419 than GF(p), some functions are limited to that for now.
6422 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
6423 that the file contains a complete HTTP response.
6426 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
6427 change the def and num file printf format specifier from "%-40sXXX"
6428 to "%-39s XXX". The latter will always guarantee a space after the
6429 field while the former will cause them to run together if the field
6430 is 40 of more characters long.
6433 *) Constify the cipher and digest 'method' functions and structures
6434 and modify related functions to take constant EVP_MD and EVP_CIPHER
6438 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
6439 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
6442 *) Modify EVP_Digest*() routines so they now return values. Although the
6443 internal software routines can never fail additional hardware versions
6447 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
6449 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
6450 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
6453 ERR_R_NESTED_ASN1_ERROR
6455 ERR_R_MISSING_ASN1_EOS
6456 were 4 .. 9, conflicting with
6457 ERR_LIB_RSA (= ERR_R_RSA_LIB)
6459 ERR_LIB_PEM (= ERR_R_PEM_LIB).
6460 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
6462 Add new error code 'ERR_R_INTERNAL_ERROR'.
6465 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
6469 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
6470 sets the subject name for a new request or supersedes the
6471 subject name in a given request. Formats that can be parsed are
6472 'CN=Some Name, OU=myOU, C=IT'
6474 'CN=Some Name/OU=myOU/C=IT'.
6476 Add options '-batch' and '-verbose' to 'openssl req'.
6477 [Massimiliano Pala <madwolf@hackmasters.net>]
6479 *) Introduce the possibility to access global variables through
6480 functions on platform were that's the best way to handle exporting
6481 global variables in shared libraries. To enable this functionality,
6482 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
6483 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
6484 is normally done by Configure or something similar).
6486 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
6487 in the source file (foo.c) like this:
6489 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
6490 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
6492 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
6493 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
6495 OPENSSL_DECLARE_GLOBAL(int,foo);
6496 #define foo OPENSSL_GLOBAL_REF(foo)
6497 OPENSSL_DECLARE_GLOBAL(double,bar);
6498 #define bar OPENSSL_GLOBAL_REF(bar)
6500 The #defines are very important, and therefore so is including the
6501 header file everywhere where the defined globals are used.
6503 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
6504 of ASN.1 items, but that structure is a bit different.
6506 The largest change is in util/mkdef.pl which has been enhanced with
6507 better and easier to understand logic to choose which symbols should
6508 go into the Windows .def files as well as a number of fixes and code
6509 cleanup (among others, algorithm keywords are now sorted
6510 lexicographically to avoid constant rewrites).
6513 *) In BN_div() keep a copy of the sign of 'num' before writing the
6514 result to 'rm' because if rm==num the value will be overwritten
6515 and produce the wrong result if 'num' is negative: this caused
6516 problems with BN_mod() and BN_nnmod().
6519 *) Function OCSP_request_verify(). This checks the signature on an
6520 OCSP request and verifies the signer certificate. The signer
6521 certificate is just checked for a generic purpose and OCSP request
6525 *) Add OCSP_check_validity() function to check the validity of OCSP
6526 responses. OCSP responses are prepared in real time and may only
6527 be a few seconds old. Simply checking that the current time lies
6528 between thisUpdate and nextUpdate max reject otherwise valid responses
6529 caused by either OCSP responder or client clock inaccuracy. Instead
6530 we allow thisUpdate and nextUpdate to fall within a certain period of
6531 the current time. The age of the response can also optionally be
6532 checked. Two new options -validity_period and -status_age added to
6536 *) If signature or public key algorithm is unrecognized print out its
6537 OID rather that just UNKNOWN.
6540 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
6541 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
6542 ID to be generated from the issuer certificate alone which can then be
6543 passed to OCSP_id_issuer_cmp().
6546 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
6547 ASN1 modules to export functions returning ASN1_ITEM pointers
6548 instead of the ASN1_ITEM structures themselves. This adds several
6549 new macros which allow the underlying ASN1 function/structure to
6550 be accessed transparently. As a result code should not use ASN1_ITEM
6551 references directly (such as &X509_it) but instead use the relevant
6552 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
6553 use of the new ASN1 code on platforms where exporting structures
6554 is problematical (for example in shared libraries) but exporting
6555 functions returning pointers to structures is not.
6558 *) Add support for overriding the generation of SSL/TLS session IDs.
6559 These callbacks can be registered either in an SSL_CTX or per SSL.
6560 The purpose of this is to allow applications to control, if they wish,
6561 the arbitrary values chosen for use as session IDs, particularly as it
6562 can be useful for session caching in multiple-server environments. A
6563 command-line switch for testing this (and any client code that wishes
6564 to use such a feature) has been added to "s_server".
6565 [Geoff Thorpe, Lutz Jaenicke]
6567 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
6568 of the form '#if defined(...) || defined(...) || ...' and
6569 '#if !defined(...) && !defined(...) && ...'. This also avoids
6570 the growing number of special cases it was previously handling.
6573 *) Make all configuration macros available for application by making
6574 sure they are available in opensslconf.h, by giving them names starting
6575 with "OPENSSL_" to avoid conflicts with other packages and by making
6576 sure e_os2.h will cover all platform-specific cases together with
6578 Additionally, it is now possible to define configuration/platform-
6579 specific names (called "system identities"). In the C code, these
6580 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
6581 macro with the name beginning with "OPENSSL_SYS_", which is determined
6582 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
6586 *) New option -set_serial to 'req' and 'x509' this allows the serial
6587 number to use to be specified on the command line. Previously self
6588 signed certificates were hard coded with serial number 0 and the
6589 CA options of 'x509' had to use a serial number in a file which was
6593 *) New options to 'ca' utility to support V2 CRL entry extensions.
6594 Currently CRL reason, invalidity date and hold instruction are
6595 supported. Add new CRL extensions to V3 code and some new objects.
6598 *) New function EVP_CIPHER_CTX_set_padding() this is used to
6599 disable standard block padding (aka PKCS#5 padding) in the EVP
6600 API, which was previously mandatory. This means that the data is
6601 not padded in any way and so the total length much be a multiple
6602 of the block size, otherwise an error occurs.
6605 *) Initial (incomplete) OCSP SSL support.
6608 *) New function OCSP_parse_url(). This splits up a URL into its host,
6609 port and path components: primarily to parse OCSP URLs. New -url
6610 option to ocsp utility.
6613 *) New nonce behavior. The return value of OCSP_check_nonce() now
6614 reflects the various checks performed. Applications can decide
6615 whether to tolerate certain situations such as an absent nonce
6616 in a response when one was present in a request: the ocsp application
6617 just prints out a warning. New function OCSP_add1_basic_nonce()
6618 this is to allow responders to include a nonce in a response even if
6619 the request is nonce-less.
6622 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
6623 skipped when using openssl x509 multiple times on a single input file,
6624 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
6627 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
6628 set string type: to handle setting ASN1_TIME structures. Fix ca
6629 utility to correctly initialize revocation date of CRLs.
6632 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
6633 the clients preferred ciphersuites and rather use its own preferences.
6634 Should help to work around M$ SGC (Server Gated Cryptography) bug in
6635 Internet Explorer by ensuring unchanged hash method during stepup.
6636 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
6639 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
6640 to aes and add a new 'exist' option to print out symbols that don't
6644 *) Additional options to ocsp utility to allow flags to be set and
6645 additional certificates supplied.
6648 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
6649 OCSP client a number of certificate to only verify the response
6653 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
6654 handle the new API. Currently only ECB, CBC modes supported. Add new
6657 Add TLS AES ciphersuites as described in RFC3268, "Advanced
6658 Encryption Standard (AES) Ciphersuites for Transport Layer
6659 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
6660 not enabled by default and were not part of the "ALL" ciphersuite
6661 alias because they were not yet official; they could be
6662 explicitly requested by specifying the "AESdraft" ciphersuite
6663 group alias. In the final release of OpenSSL 0.9.7, the group
6664 alias is called "AES" and is part of "ALL".)
6665 [Ben Laurie, Steve Henson, Bodo Moeller]
6667 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
6668 request to response.
6671 *) Functions for OCSP responders. OCSP_request_onereq_count(),
6672 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
6673 extract information from a certificate request. OCSP_response_create()
6674 creates a response and optionally adds a basic response structure.
6675 OCSP_basic_add1_status() adds a complete single response to a basic
6676 response and returns the OCSP_SINGLERESP structure just added (to allow
6677 extensions to be included for example). OCSP_basic_add1_cert() adds a
6678 certificate to a basic response and OCSP_basic_sign() signs a basic
6679 response with various flags. New helper functions ASN1_TIME_check()
6680 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
6681 (converts ASN1_TIME to GeneralizedTime).
6684 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
6685 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
6686 structure from a certificate. X509_pubkey_digest() digests the public_key
6687 contents: this is used in various key identifiers.
6690 *) Make sk_sort() tolerate a NULL argument.
6691 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
6693 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
6694 passed by the function are trusted implicitly. If any of them signed the
6695 response then it is assumed to be valid and is not verified.
6698 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
6699 to data. This was previously part of the PKCS7 ASN1 code. This
6700 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
6701 [Steve Henson, reported by Kenneth R. Robinette
6702 <support@securenetterm.com>]
6704 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
6705 routines: without these tracing memory leaks is very painful.
6706 Fix leaks in PKCS12 and PKCS7 routines.
6709 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
6710 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
6711 effectively meant GeneralizedTime would never be used. Now it
6712 is initialised to -1 but X509_time_adj() now has to check the value
6713 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
6714 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
6715 [Steve Henson, reported by Kenneth R. Robinette
6716 <support@securenetterm.com>]
6718 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
6719 result in a zero length in the ASN1_INTEGER structure which was
6720 not consistent with the structure when d2i_ASN1_INTEGER() was used
6721 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
6722 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
6723 where it did not print out a minus for negative ASN1_INTEGER.
6726 *) Add summary printout to ocsp utility. The various functions which
6727 convert status values to strings have been renamed to:
6728 OCSP_response_status_str(), OCSP_cert_status_str() and
6729 OCSP_crl_reason_str() and are no longer static. New options
6730 to verify nonce values and to disable verification. OCSP response
6731 printout format cleaned up.
6734 *) Add additional OCSP certificate checks. These are those specified
6735 in RFC2560. This consists of two separate checks: the CA of the
6736 certificate being checked must either be the OCSP signer certificate
6737 or the issuer of the OCSP signer certificate. In the latter case the
6738 OCSP signer certificate must contain the OCSP signing extended key
6739 usage. This check is performed by attempting to match the OCSP
6740 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
6741 in the OCSP_CERTID structures of the response.
6744 *) Initial OCSP certificate verification added to OCSP_basic_verify()
6745 and related routines. This uses the standard OpenSSL certificate
6746 verify routines to perform initial checks (just CA validity) and
6747 to obtain the certificate chain. Then additional checks will be
6748 performed on the chain. Currently the root CA is checked to see
6749 if it is explicitly trusted for OCSP signing. This is used to set
6750 a root CA as a global signing root: that is any certificate that
6751 chains to that CA is an acceptable OCSP signing certificate.
6754 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
6755 extensions from a separate configuration file.
6756 As when reading extensions from the main configuration file,
6757 the '-extensions ...' option may be used for specifying the
6759 [Massimiliano Pala <madwolf@comune.modena.it>]
6761 *) New OCSP utility. Allows OCSP requests to be generated or
6762 read. The request can be sent to a responder and the output
6763 parsed, outputed or printed in text form. Not complete yet:
6764 still needs to check the OCSP response validity.
6767 *) New subcommands for 'openssl ca':
6768 'openssl ca -status <serial>' prints the status of the cert with
6769 the given serial number (according to the index file).
6770 'openssl ca -updatedb' updates the expiry status of certificates
6772 [Massimiliano Pala <madwolf@comune.modena.it>]
6774 *) New '-newreq-nodes' command option to CA.pl. This is like
6775 '-newreq', but calls 'openssl req' with the '-nodes' option
6776 so that the resulting key is not encrypted.
6777 [Damien Miller <djm@mindrot.org>]
6779 *) New configuration for the GNU Hurd.
6780 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
6782 *) Initial code to implement OCSP basic response verify. This
6783 is currently incomplete. Currently just finds the signer's
6784 certificate and verifies the signature on the response.
6787 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
6788 value of OPENSSLDIR. This is available via the new '-d' option
6789 to 'openssl version', and is also included in 'openssl version -a'.
6792 *) Allowing defining memory allocation callbacks that will be given
6793 file name and line number information in additional arguments
6794 (a const char* and an int). The basic functionality remains, as
6795 well as the original possibility to just replace malloc(),
6796 realloc() and free() by functions that do not know about these
6797 additional arguments. To register and find out the current
6798 settings for extended allocation functions, the following
6799 functions are provided:
6801 CRYPTO_set_mem_ex_functions
6802 CRYPTO_set_locked_mem_ex_functions
6803 CRYPTO_get_mem_ex_functions
6804 CRYPTO_get_locked_mem_ex_functions
6806 These work the same way as CRYPTO_set_mem_functions and friends.
6807 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
6808 extended allocation function is enabled.
6809 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
6810 a conventional allocation function is enabled.
6811 [Richard Levitte, Bodo Moeller]
6813 *) Finish off removing the remaining LHASH function pointer casts.
6814 There should no longer be any prototype-casting required when using
6815 the LHASH abstraction, and any casts that remain are "bugs". See
6816 the callback types and macros at the head of lhash.h for details
6817 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
6820 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
6821 If /dev/[u]random devices are not available or do not return enough
6822 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
6824 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
6825 /etc/entropy will be queried once each in this sequence, quering stops
6826 when enough entropy was collected without querying more sockets.
6829 *) Change the Unix RAND_poll() variant to be able to poll several
6830 random devices, as specified by DEVRANDOM, until a sufficient amount
6831 of data has been collected. We spend at most 10 ms on each file
6832 (select timeout) and read in non-blocking mode. DEVRANDOM now
6833 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
6834 (previously it was just the string "/dev/urandom"), so on typical
6835 platforms the 10 ms delay will never occur.
6836 Also separate out the Unix variant to its own file, rand_unix.c.
6837 For VMS, there's a currently-empty rand_vms.c.
6840 *) Move OCSP client related routines to ocsp_cl.c. These
6841 provide utility functions which an application needing
6842 to issue a request to an OCSP responder and analyse the
6843 response will typically need: as opposed to those which an
6844 OCSP responder itself would need which will be added later.
6846 OCSP_request_sign() signs an OCSP request with an API similar
6847 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
6848 response. OCSP_response_get1_basic() extracts basic response
6849 from response. OCSP_resp_find_status(): finds and extracts status
6850 information from an OCSP_CERTID structure (which will be created
6851 when the request structure is built). These are built from lower
6852 level functions which work on OCSP_SINGLERESP structures but
6853 wont normally be used unless the application wishes to examine
6854 extensions in the OCSP response for example.
6856 Replace nonce routines with a pair of functions.
6857 OCSP_request_add1_nonce() adds a nonce value and optionally
6858 generates a random value. OCSP_check_nonce() checks the
6859 validity of the nonce in an OCSP response.
6862 *) Change function OCSP_request_add() to OCSP_request_add0_id().
6863 This doesn't copy the supplied OCSP_CERTID and avoids the
6864 need to free up the newly created id. Change return type
6865 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
6866 This can then be used to add extensions to the request.
6867 Deleted OCSP_request_new(), since most of its functionality
6868 is now in OCSP_REQUEST_new() (and the case insensitive name
6869 clash) apart from the ability to set the request name which
6870 will be added elsewhere.
6873 *) Update OCSP API. Remove obsolete extensions argument from
6874 various functions. Extensions are now handled using the new
6875 OCSP extension code. New simple OCSP HTTP function which
6876 can be used to send requests and parse the response.
6879 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
6880 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
6881 uses the special reorder version of SET OF to sort the attributes
6882 and reorder them to match the encoded order. This resolves a long
6883 standing problem: a verify on a PKCS7 structure just after signing
6884 it used to fail because the attribute order did not match the
6885 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
6886 it uses the received order. This is necessary to tolerate some broken
6887 software that does not order SET OF. This is handled by encoding
6888 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
6889 to produce the required SET OF.
6892 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
6893 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
6894 files to get correct declarations of the ASN.1 item variables.
6897 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
6898 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
6899 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
6900 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
6901 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
6902 ASN1_ITEM and no wrapper functions.
6905 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
6906 replace the old function pointer based I/O routines. Change most of
6907 the *_d2i_bio() and *_d2i_fp() functions to use these.
6910 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
6911 lines, recognice more "algorithms" that can be deselected, and make
6912 it complain about algorithm deselection that isn't recognised.
6915 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
6916 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
6917 to use new functions. Add NO_ASN1_OLD which can be set to remove
6918 some old style ASN1 functions: this can be used to determine if old
6919 code will still work when these eventually go away.
6922 *) New extension functions for OCSP structures, these follow the
6923 same conventions as certificates and CRLs.
6926 *) New function X509V3_add1_i2d(). This automatically encodes and
6927 adds an extension. Its behaviour can be customised with various
6928 flags to append, replace or delete. Various wrappers added for
6929 certifcates and CRLs.
6932 *) Fix to avoid calling the underlying ASN1 print routine when
6933 an extension cannot be parsed. Correct a typo in the
6934 OCSP_SERVICELOC extension. Tidy up print OCSP format.
6937 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
6938 entries for variables.
6941 *) Add functionality to apps/openssl.c for detecting locking
6942 problems: As the program is single-threaded, all we have
6943 to do is register a locking callback using an array for
6944 storing which locks are currently held by the program.
6947 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
6948 SSL_get_ex_data_X509_STORE_idx(), which is used in
6949 ssl_verify_cert_chain() and thus can be called at any time
6950 during TLS/SSL handshakes so that thread-safety is essential.
6951 Unfortunately, the ex_data design is not at all suited
6952 for multi-threaded use, so it probably should be abolished.
6955 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
6956 [Broadcom, tweaked and integrated by Geoff Thorpe]
6958 *) Move common extension printing code to new function
6959 X509V3_print_extensions(). Reorganise OCSP print routines and
6960 implement some needed OCSP ASN1 functions. Add OCSP extensions.
6963 *) New function X509_signature_print() to remove duplication in some
6967 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
6968 set (this was treated exactly the same as SET OF previously). This
6969 is used to reorder the STACK representing the structure to match the
6970 encoding. This will be used to get round a problem where a PKCS7
6971 structure which was signed could not be verified because the STACK
6972 order did not reflect the encoded order.
6975 *) Reimplement the OCSP ASN1 module using the new code.
6978 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
6979 for its ASN1 operations. The old style function pointers still exist
6980 for now but they will eventually go away.
6983 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
6984 completely replaces the old ASN1 functionality with a table driven
6985 encoder and decoder which interprets an ASN1_ITEM structure describing
6986 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
6987 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
6988 has also been converted to the new form.
6991 *) Change BN_mod_exp_recp so that negative moduli are tolerated
6992 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
6993 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
6994 for negative moduli.
6997 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
6998 of not touching the result's sign bit.
7001 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
7005 *) Changed the LHASH code to use prototypes for callbacks, and created
7006 macros to declare and implement thin (optionally static) functions
7007 that provide type-safety and avoid function pointer casting for the
7008 type-specific callbacks.
7011 *) Added Kerberos Cipher Suites to be used with TLS, as written in
7013 [Veers Staats <staatsvr@asc.hpc.mil>,
7014 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
7016 *) Reformat the FAQ so the different questions and answers can be divided
7017 in sections depending on the subject.
7020 *) Have the zlib compression code load ZLIB.DLL dynamically under
7024 *) New function BN_mod_sqrt for computing square roots modulo a prime
7025 (using the probabilistic Tonelli-Shanks algorithm unless
7026 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
7027 be handled deterministically).
7028 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
7030 *) Make BN_mod_inverse faster by explicitly handling small quotients
7031 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
7032 512 bits], about 30% for larger ones [1024 or 2048 bits].)
7035 *) New function BN_kronecker.
7038 *) Fix BN_gcd so that it works on negative inputs; the result is
7039 positive unless both parameters are zero.
7040 Previously something reasonably close to an infinite loop was
7041 possible because numbers could be growing instead of shrinking
7042 in the implementation of Euclid's algorithm.
7045 *) Fix BN_is_word() and BN_is_one() macros to take into account the
7046 sign of the number in question.
7048 Fix BN_is_word(a,w) to work correctly for w == 0.
7050 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
7051 because its test if the absolute value of 'a' equals 'w'.
7052 Note that BN_abs_is_word does *not* handle w == 0 reliably;
7053 it exists mostly for use in the implementations of BN_is_zero(),
7054 BN_is_one(), and BN_is_word().
7057 *) New function BN_swap.
7060 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
7061 the exponentiation functions are more likely to produce reasonable
7062 results on negative inputs.
7065 *) Change BN_mod_mul so that the result is always non-negative.
7066 Previously, it could be negative if one of the factors was negative;
7067 I don't think anyone really wanted that behaviour.
7070 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
7071 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
7072 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
7073 and add new functions:
7082 BN_mod_lshift1_quick
7086 These functions always generate non-negative results.
7088 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
7089 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
7091 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
7092 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
7093 be reduced modulo m.
7094 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
7097 The following entry accidentily appeared in the CHANGES file
7098 distributed with OpenSSL 0.9.7. The modifications described in
7099 it do *not* apply to OpenSSL 0.9.7.
7101 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
7102 was actually never needed) and in BN_mul(). The removal in BN_mul()
7103 required a small change in bn_mul_part_recursive() and the addition
7104 of the functions bn_cmp_part_words(), bn_sub_part_words() and
7105 bn_add_part_words(), which do the same thing as bn_cmp_words(),
7106 bn_sub_words() and bn_add_words() except they take arrays with
7111 *) In 'openssl passwd', verify passwords read from the terminal
7112 unless the '-salt' option is used (which usually means that
7113 verification would just waste user's time since the resulting
7114 hash is going to be compared with some given password hash)
7115 or the new '-noverify' option is used.
7117 This is an incompatible change, but it does not affect
7118 non-interactive use of 'openssl passwd' (passwords on the command
7119 line, '-stdin' option, '-in ...' option) and thus should not
7123 *) Remove all references to RSAref, since there's no more need for it.
7126 *) Make DSO load along a path given through an environment variable
7127 (SHLIB_PATH) with shl_load().
7130 *) Constify the ENGINE code as a result of BIGNUM constification.
7131 Also constify the RSA code and most things related to it. In a
7132 few places, most notable in the depth of the ASN.1 code, ugly
7133 casts back to non-const were required (to be solved at a later
7137 *) Make it so the openssl application has all engines loaded by default.
7140 *) Constify the BIGNUM routines a little more.
7143 *) Add the following functions:
7145 ENGINE_load_cswift()
7147 ENGINE_load_atalla()
7149 ENGINE_load_builtin_engines()
7151 That way, an application can itself choose if external engines that
7152 are built-in in OpenSSL shall ever be used or not. The benefit is
7153 that applications won't have to be linked with libdl or other dso
7154 libraries unless it's really needed.
7156 Changed 'openssl engine' to load all engines on demand.
7157 Changed the engine header files to avoid the duplication of some
7158 declarations (they differed!).
7161 *) 'openssl engine' can now list capabilities.
7164 *) Better error reporting in 'openssl engine'.
7167 *) Never call load_dh_param(NULL) in s_server.
7170 *) Add engine application. It can currently list engines by name and
7171 identity, and test if they are actually available.
7174 *) Improve RPM specification file by forcing symbolic linking and making
7175 sure the installed documentation is also owned by root.root.
7176 [Damien Miller <djm@mindrot.org>]
7178 *) Give the OpenSSL applications more possibilities to make use of
7179 keys (public as well as private) handled by engines.
7182 *) Add OCSP code that comes from CertCo.
7185 *) Add VMS support for the Rijndael code.
7188 *) Added untested support for Nuron crypto accelerator.
7191 *) Add support for external cryptographic devices. This code was
7192 previously distributed separately as the "engine" branch.
7193 [Geoff Thorpe, Richard Levitte]
7195 *) Rework the filename-translation in the DSO code. It is now possible to
7196 have far greater control over how a "name" is turned into a filename
7197 depending on the operating environment and any oddities about the
7198 different shared library filenames on each system.
7201 *) Support threads on FreeBSD-elf in Configure.
7204 *) Fix for SHA1 assembly problem with MASM: it produces
7205 warnings about corrupt line number information when assembling
7206 with debugging information. This is caused by the overlapping
7208 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
7211 NCONF_get_number() has no error checking at all. As a replacement,
7212 NCONF_get_number_e() is defined (_e for "error checking") and is
7213 promoted strongly. The old NCONF_get_number is kept around for
7214 binary backward compatibility.
7215 Make it possible for methods to load from something other than a BIO,
7216 by providing a function pointer that is given a name instead of a BIO.
7217 For example, this could be used to load configuration data from an
7221 *) Fix for non blocking accept BIOs. Added new I/O special reason
7222 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
7223 with non blocking I/O was not possible because no retry code was
7224 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
7228 *) Added the beginnings of Rijndael support.
7231 *) Fix for bug in DirectoryString mask setting. Add support for
7232 X509_NAME_print_ex() in 'req' and X509_print_ex() function
7233 to allow certificate printing to more controllable, additional
7234 'certopt' option to 'x509' to allow new printing options to be
7238 *) Clean old EAY MD5 hack from e_os.h.
7241 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
7243 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
7244 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
7245 [Joe Orton, Steve Henson]
7247 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
7249 *) Fix additional bug revealed by the NISCC test suite:
7251 Stop bug triggering large recursion when presented with
7252 certain ASN.1 tags (CVE-2003-0851)
7255 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
7257 *) Fix various bugs revealed by running the NISCC test suite:
7259 Stop out of bounds reads in the ASN1 code when presented with
7260 invalid tags (CVE-2003-0543 and CVE-2003-0544).
7262 If verify callback ignores invalid public key errors don't try to check
7263 certificate signature with the NULL public key.
7267 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
7268 if the server requested one: as stated in TLS 1.0 and SSL 3.0
7272 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
7273 extra data after the compression methods not only for TLS 1.0
7274 but also for SSL 3.0 (as required by the specification).
7275 [Bodo Moeller; problem pointed out by Matthias Loepfe]
7277 *) Change X509_certificate_type() to mark the key as exported/exportable
7278 when it's 512 *bits* long, not 512 bytes.
7281 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
7283 *) Countermeasure against the Klima-Pokorny-Rosa extension of
7284 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
7285 a protocol version number mismatch like a decryption error
7286 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
7289 *) Turn on RSA blinding by default in the default implementation
7290 to avoid a timing attack. Applications that don't want it can call
7291 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
7292 They would be ill-advised to do so in most cases.
7293 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
7295 *) Change RSA blinding code so that it works when the PRNG is not
7296 seeded (in this case, the secret RSA exponent is abused as
7297 an unpredictable seed -- if it is not unpredictable, there
7298 is no point in blinding anyway). Make RSA blinding thread-safe
7299 by remembering the creator's thread ID in rsa->blinding and
7300 having all other threads use local one-time blinding factors
7301 (this requires more computation than sharing rsa->blinding, but
7302 avoids excessive locking; and if an RSA object is not shared
7303 between threads, blinding will still be very fast).
7306 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
7308 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
7309 via timing by performing a MAC computation even if incorrrect
7310 block cipher padding has been found. This is a countermeasure
7311 against active attacks where the attacker has to distinguish
7312 between bad padding and a MAC verification error. (CVE-2003-0078)
7314 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
7315 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
7316 Martin Vuagnoux (EPFL, Ilion)]
7318 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
7320 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
7321 memory from it's contents. This is done with a counter that will
7322 place alternating values in each byte. This can be used to solve
7323 two issues: 1) the removal of calls to memset() by highly optimizing
7324 compilers, and 2) cleansing with other values than 0, since those can
7325 be read through on certain media, for example a swap space on disk.
7328 *) Bugfix: client side session caching did not work with external caching,
7329 because the session->cipher setting was not restored when reloading
7330 from the external cache. This problem was masked, when
7331 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
7332 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
7335 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
7336 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
7337 [Zeev Lieber <zeev-l@yahoo.com>]
7339 *) Undo an undocumented change introduced in 0.9.6e which caused
7340 repeated calls to OpenSSL_add_all_ciphers() and
7341 OpenSSL_add_all_digests() to be ignored, even after calling
7345 *) Change the default configuration reader to deal with last line not
7346 being properly terminated.
7349 *) Change X509_NAME_cmp() so it applies the special rules on handling
7350 DN values that are of type PrintableString, as well as RDNs of type
7351 emailAddress where the value has the type ia5String.
7352 [stefank@valicert.com via Richard Levitte]
7354 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
7355 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
7356 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
7357 the bitwise-OR of the two for use by the majority of applications
7358 wanting this behaviour, and update the docs. The documented
7359 behaviour and actual behaviour were inconsistent and had been
7360 changing anyway, so this is more a bug-fix than a behavioural
7362 [Geoff Thorpe, diagnosed by Nadav Har'El]
7364 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
7365 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
7368 *) Fix initialization code race conditions in
7369 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
7370 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
7371 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
7372 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
7373 ssl2_get_cipher_by_char(),
7374 ssl3_get_cipher_by_char().
7375 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
7377 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
7378 the cached sessions are flushed, as the remove_cb() might use ex_data
7379 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
7380 (see [openssl.org #212]).
7381 [Geoff Thorpe, Lutz Jaenicke]
7383 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
7384 length, instead of the encoding length to d2i_ASN1_OBJECT.
7387 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
7389 *) [In 0.9.6g-engine release:]
7390 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
7391 [Lynn Gazis <lgazis@rainbow.com>]
7393 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
7395 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
7396 and get fix the header length calculation.
7397 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
7398 Alon Kantor <alonk@checkpoint.com> (and others),
7401 *) Use proper error handling instead of 'assertions' in buffer
7402 overflow checks added in 0.9.6e. This prevents DoS (the
7403 assertions could call abort()).
7404 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
7406 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
7408 *) Add various sanity checks to asn1_get_length() to reject
7409 the ASN1 length bytes if they exceed sizeof(long), will appear
7410 negative or the content length exceeds the length of the
7412 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7414 *) Fix cipher selection routines: ciphers without encryption had no flags
7415 for the cipher strength set and where therefore not handled correctly
7416 by the selection routines (PR #130).
7419 *) Fix EVP_dsa_sha macro.
7423 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
7424 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
7425 that was added in OpenSSL 0.9.6d.
7427 As the countermeasure turned out to be incompatible with some
7428 broken SSL implementations, the new option is part of SSL_OP_ALL.
7429 SSL_OP_ALL is usually employed when compatibility with weird SSL
7430 implementations is desired (e.g. '-bugs' option to 's_client' and
7431 's_server'), so the new option is automatically set in many
7435 *) Changes in security patch:
7437 Changes marked "(CHATS)" were sponsored by the Defense Advanced
7438 Research Projects Agency (DARPA) and Air Force Research Laboratory,
7439 Air Force Materiel Command, USAF, under agreement number
7442 *) Add various sanity checks to asn1_get_length() to reject
7443 the ASN1 length bytes if they exceed sizeof(long), will appear
7444 negative or the content length exceeds the length of the
7445 supplied buffer. (CVE-2002-0659)
7446 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7448 *) Assertions for various potential buffer overflows, not known to
7450 [Ben Laurie (CHATS)]
7452 *) Various temporary buffers to hold ASCII versions of integers were
7453 too small for 64 bit platforms. (CVE-2002-0655)
7454 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
7456 *) Remote buffer overflow in SSL3 protocol - an attacker could
7457 supply an oversized session ID to a client. (CVE-2002-0656)
7458 [Ben Laurie (CHATS)]
7460 *) Remote buffer overflow in SSL2 protocol - an attacker could
7461 supply an oversized client master key. (CVE-2002-0656)
7462 [Ben Laurie (CHATS)]
7464 Changes between 0.9.6c and 0.9.6d [9 May 2002]
7466 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
7467 encoded as NULL) with id-dsa-with-sha1.
7468 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
7470 *) Check various X509_...() return values in apps/req.c.
7471 [Nils Larsch <nla@trustcenter.de>]
7473 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
7474 an end-of-file condition would erronously be flagged, when the CRLF
7475 was just at the end of a processed block. The bug was discovered when
7476 processing data through a buffering memory BIO handing the data to a
7477 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
7478 <ptsekov@syntrex.com> and Nedelcho Stanev.
7481 *) Implement a countermeasure against a vulnerability recently found
7482 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
7483 before application data chunks to avoid the use of known IVs
7484 with data potentially chosen by the attacker.
7487 *) Fix length checks in ssl3_get_client_hello().
7490 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
7491 to prevent ssl3_read_internal() from incorrectly assuming that
7492 ssl3_read_bytes() found application data while handshake
7493 processing was enabled when in fact s->s3->in_read_app_data was
7494 merely automatically cleared during the initial handshake.
7495 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
7497 *) Fix object definitions for Private and Enterprise: they were not
7498 recognized in their shortname (=lowercase) representation. Extend
7499 obj_dat.pl to issue an error when using undefined keywords instead
7500 of silently ignoring the problem (Svenning Sorensen
7501 <sss@sss.dnsalias.net>).
7504 *) Fix DH_generate_parameters() so that it works for 'non-standard'
7505 generators, i.e. generators other than 2 and 5. (Previously, the
7506 code did not properly initialise the 'add' and 'rem' values to
7507 BN_generate_prime().)
7509 In the new general case, we do not insist that 'generator' is
7510 actually a primitive root: This requirement is rather pointless;
7511 a generator of the order-q subgroup is just as good, if not
7515 *) Map new X509 verification errors to alerts. Discovered and submitted by
7516 Tom Wu <tom@arcot.com>.
7519 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
7520 returning non-zero before the data has been completely received
7521 when using non-blocking I/O.
7522 [Bodo Moeller; problem pointed out by John Hughes]
7524 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
7525 [Ben Laurie, Lutz Jaenicke]
7527 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
7528 Yoram Zahavi <YoramZ@gilian.com>).
7531 *) Add information about CygWin 1.3 and on, and preserve proper
7532 configuration for the versions before that.
7533 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7535 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
7536 check whether we deal with a copy of a session and do not delete from
7537 the cache in this case. Problem reported by "Izhar Shoshani Levi"
7538 <izhar@checkpoint.com>.
7541 *) Do not store session data into the internal session cache, if it
7542 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
7543 flag is set). Proposed by Aslam <aslam@funk.com>.
7546 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
7550 *) [In 0.9.6d-engine release:]
7551 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7552 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7554 *) Add the configuration target linux-s390x.
7555 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
7557 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
7558 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
7559 variable as an indication that a ClientHello message has been
7560 received. As the flag value will be lost between multiple
7561 invocations of ssl3_accept when using non-blocking I/O, the
7562 function may not be aware that a handshake has actually taken
7563 place, thus preventing a new session from being added to the
7566 To avoid this problem, we now set s->new_session to 2 instead of
7567 using a local variable.
7568 [Lutz Jaenicke, Bodo Moeller]
7570 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
7571 if the SSL_R_LENGTH_MISMATCH error is detected.
7572 [Geoff Thorpe, Bodo Moeller]
7574 *) New 'shared_ldflag' column in Configure platform table.
7577 *) Fix EVP_CIPHER_mode macro.
7578 ["Dan S. Camper" <dan@bti.net>]
7580 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
7581 type, we must throw them away by setting rr->length to 0.
7582 [D P Chang <dpc@qualys.com>]
7584 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
7586 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
7587 <Dominikus.Scherkl@biodata.com>. (The previous implementation
7588 worked incorrectly for those cases where range = 10..._2 and
7589 3*range is two bits longer than range.)
7592 *) Only add signing time to PKCS7 structures if it is not already
7596 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
7597 OBJ_ld_ce should be OBJ_id_ce.
7598 Also some ip-pda OIDs in crypto/objects/objects.txt were
7599 incorrect (cf. RFC 3039).
7600 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
7602 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
7603 returns early because it has nothing to do.
7604 [Andy Schneider <andy.schneider@bjss.co.uk>]
7606 *) [In 0.9.6c-engine release:]
7607 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
7608 [Andy Schneider <andy.schneider@bjss.co.uk>]
7610 *) [In 0.9.6c-engine release:]
7611 Add support for Cryptographic Appliance's keyserver technology.
7612 (Use engine 'keyclient')
7613 [Cryptographic Appliances and Geoff Thorpe]
7615 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
7616 is called via tools/c89.sh because arguments have to be
7617 rearranged (all '-L' options must appear before the first object
7619 [Richard Shapiro <rshapiro@abinitio.com>]
7621 *) [In 0.9.6c-engine release:]
7622 Add support for Broadcom crypto accelerator cards, backported
7624 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
7626 *) [In 0.9.6c-engine release:]
7627 Add support for SureWare crypto accelerator cards from
7628 Baltimore Technologies. (Use engine 'sureware')
7629 [Baltimore Technologies and Mark Cox]
7631 *) [In 0.9.6c-engine release:]
7632 Add support for crypto accelerator cards from Accelerated
7633 Encryption Processing, www.aep.ie. (Use engine 'aep')
7634 [AEP Inc. and Mark Cox]
7636 *) Add a configuration entry for gcc on UnixWare.
7637 [Gary Benson <gbenson@redhat.com>]
7639 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
7640 messages are stored in a single piece (fixed-length part and
7641 variable-length part combined) and fix various bugs found on the way.
7644 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
7645 instead. BIO_gethostbyname() does not know what timeouts are
7646 appropriate, so entries would stay in cache even when they have
7648 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
7650 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
7651 faced with a pathologically small ClientHello fragment that does
7652 not contain client_version: Instead of aborting with an error,
7653 simply choose the highest available protocol version (i.e.,
7654 TLS 1.0 unless it is disabled). In practice, ClientHello
7655 messages are never sent like this, but this change gives us
7656 strictly correct behaviour at least for TLS.
7659 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
7660 never resets s->method to s->ctx->method when called from within
7661 one of the SSL handshake functions.
7662 [Bodo Moeller; problem pointed out by Niko Baric]
7664 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
7665 (sent using the client's version number) if client_version is
7666 smaller than the protocol version in use. Also change
7667 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
7668 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
7669 the client will at least see that alert.
7672 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
7676 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
7677 client receives HelloRequest while in a handshake.
7678 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
7680 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
7681 should end in 'break', not 'goto end' which circuments various
7682 cleanups done in state SSL_ST_OK. But session related stuff
7683 must be disabled for SSL_ST_OK in the case that we just sent a
7686 Also avoid some overhead by not calling ssl_init_wbio_buffer()
7687 before just sending a HelloRequest.
7688 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
7690 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
7691 reveal whether illegal block cipher padding was found or a MAC
7692 verification error occured. (Neither SSLerr() codes nor alerts
7693 are directly visible to potential attackers, but the information
7694 may leak via logfiles.)
7696 Similar changes are not required for the SSL 2.0 implementation
7697 because the number of padding bytes is sent in clear for SSL 2.0,
7698 and the extra bytes are just ignored. However ssl/s2_pkt.c
7699 failed to verify that the purported number of padding bytes is in
7703 *) Add OpenUNIX-8 support including shared libraries
7704 (Boyd Lynn Gerber <gerberb@zenez.com>).
7707 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
7708 'wristwatch attack' using huge encoding parameters (cf.
7709 James H. Manger's CRYPTO 2001 paper). Note that the
7710 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
7711 encoding parameters and hence was not vulnerable.
7714 *) BN_sqr() bug fix.
7715 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
7717 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
7718 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
7719 followed by modular reduction.
7720 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
7722 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
7723 equivalent based on BN_pseudo_rand() instead of BN_rand().
7726 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
7727 This function was broken, as the check for a new client hello message
7728 to handle SGC did not allow these large messages.
7729 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
7732 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
7735 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
7736 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
7739 *) Rework the configuration and shared library support for Tru64 Unix.
7740 The configuration part makes use of modern compiler features and
7741 still retains old compiler behavior for those that run older versions
7742 of the OS. The shared library support part includes a variant that
7743 uses the RPATH feature, and is available through the special
7744 configuration target "alpha-cc-rpath", which will never be selected
7746 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
7748 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
7749 with the same message size as in ssl3_get_certificate_request().
7750 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
7751 messages might inadvertently be reject as too long.
7752 [Petr Lampa <lampa@fee.vutbr.cz>]
7754 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
7757 *) Modified SSL library such that the verify_callback that has been set
7758 specificly for an SSL object with SSL_set_verify() is actually being
7759 used. Before the change, a verify_callback set with this function was
7760 ignored and the verify_callback() set in the SSL_CTX at the time of
7761 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
7762 to allow the necessary settings.
7765 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
7766 explicitly to NULL, as at least on Solaris 8 this seems not always to be
7767 done automatically (in contradiction to the requirements of the C
7768 standard). This made problems when used from OpenSSH.
7771 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
7772 dh->length and always used
7774 BN_rand_range(priv_key, dh->p).
7776 BN_rand_range() is not necessary for Diffie-Hellman, and this
7777 specific range makes Diffie-Hellman unnecessarily inefficient if
7778 dh->length (recommended exponent length) is much smaller than the
7779 length of dh->p. We could use BN_rand_range() if the order of
7780 the subgroup was stored in the DH structure, but we only have
7785 BN_rand(priv_key, l, ...)
7787 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
7793 RSA_eay_public_encrypt
7794 RSA_eay_private_decrypt
7795 RSA_eay_private_encrypt (signing)
7796 RSA_eay_public_decrypt (signature verification)
7798 (default implementations for RSA_public_encrypt,
7799 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
7800 always reject numbers >= n.
7803 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
7804 to synchronize access to 'locking_thread'. This is necessary on
7805 systems where access to 'locking_thread' (an 'unsigned long'
7806 variable) is not atomic.
7809 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
7810 *before* setting the 'crypto_lock_rand' flag. The previous code had
7811 a race condition if 0 is a valid thread ID.
7812 [Travis Vitek <vitek@roguewave.com>]
7814 *) Add support for shared libraries under Irix.
7815 [Albert Chin-A-Young <china@thewrittenword.com>]
7817 *) Add configuration option to build on Linux on both big-endian and
7819 [Ralf Baechle <ralf@uni-koblenz.de>]
7821 *) Add the possibility to create shared libraries on HP-UX.
7824 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
7826 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
7827 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
7828 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
7829 PRNG state recovery was possible based on the output of
7830 one PRNG request appropriately sized to gain knowledge on
7831 'md' followed by enough consecutive 1-byte PRNG requests
7832 to traverse all of 'state'.
7834 1. When updating 'md_local' (the current thread's copy of 'md')
7835 during PRNG output generation, hash all of the previous
7836 'md_local' value, not just the half used for PRNG output.
7838 2. Make the number of bytes from 'state' included into the hash
7839 independent from the number of PRNG bytes requested.
7841 The first measure alone would be sufficient to avoid
7842 Markku-Juhani's attack. (Actually it had never occurred
7843 to me that the half of 'md_local' used for chaining was the
7844 half from which PRNG output bytes were taken -- I had always
7845 assumed that the secret half would be used.) The second
7846 measure makes sure that additional data from 'state' is never
7847 mixed into 'md_local' in small portions; this heuristically
7848 further strengthens the PRNG.
7851 *) Fix crypto/bn/asm/mips3.s.
7854 *) When only the key is given to "enc", the IV is undefined. Print out
7855 an error message in this case.
7858 *) Handle special case when X509_NAME is empty in X509 printing routines.
7861 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
7862 positive and less than q.
7865 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
7866 used: it isn't thread safe and the add_lock_callback should handle
7868 [Paul Rose <Paul.Rose@bridge.com>]
7870 *) Verify that incoming data obeys the block size in
7871 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
7875 [Ulf Möller, Bodo Möller]
7877 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
7878 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
7879 when fixing the server behaviour for backwards-compatible 'client
7880 hello' messages. (Note that the attack is impractical against
7881 SSL 3.0 and TLS 1.0 anyway because length and version checking
7882 means that the probability of guessing a valid ciphertext is
7883 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
7886 Before 0.9.5, the countermeasure (hide the error by generating a
7887 random 'decryption result') did not work properly because
7888 ERR_clear_error() was missing, meaning that SSL_get_error() would
7889 detect the supposedly ignored error.
7891 Both problems are now fixed.
7894 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
7895 (previously it was 1024).
7898 *) Fix for compatibility mode trust settings: ignore trust settings
7899 unless some valid trust or reject settings are present.
7902 *) Fix for blowfish EVP: its a variable length cipher.
7905 *) Fix various bugs related to DSA S/MIME verification. Handle missing
7906 parameters in DSA public key structures and return an error in the
7907 DSA routines if parameters are absent.
7910 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
7911 in the current directory if neither $RANDFILE nor $HOME was set.
7912 RAND_file_name() in 0.9.6a returned NULL in this case. This has
7913 caused some confusion to Windows users who haven't defined $HOME.
7914 Thus RAND_file_name() is changed again: e_os.h can define a
7915 DEFAULT_HOME, which will be used if $HOME is not set.
7916 For Windows, we use "C:"; on other platforms, we still require
7917 environment variables.
7919 *) Move 'if (!initialized) RAND_poll()' into regions protected by
7920 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
7921 having multiple threads call RAND_poll() concurrently.
7924 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
7925 combination of a flag and a thread ID variable.
7926 Otherwise while one thread is in ssleay_rand_bytes (which sets the
7927 flag), *other* threads can enter ssleay_add_bytes without obeying
7928 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
7929 that they do not hold after the first thread unsets add_do_not_lock).
7932 *) Change bctest again: '-x' expressions are not available in all
7936 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
7938 *) Fix a couple of memory leaks in PKCS7_dataDecode()
7939 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
7941 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
7942 the default extension for executables, if any. Also, make the perl
7943 scripts that use symlink() to test if it really exists and use "cp"
7944 if it doesn't. All this made OpenSSL compilable and installable in
7948 *) Fix for asn1_GetSequence() for indefinite length constructed data.
7949 If SEQUENCE is length is indefinite just set c->slen to the total
7950 amount of data available.
7951 [Steve Henson, reported by shige@FreeBSD.org]
7952 [This change does not apply to 0.9.7.]
7954 *) Change bctest to avoid here-documents inside command substitution
7955 (workaround for FreeBSD /bin/sh bug).
7956 For compatibility with Ultrix, avoid shell functions (introduced
7957 in the bctest version that searches along $PATH).
7960 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
7961 with des_encrypt() defined on some operating systems, like Solaris
7965 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
7966 On the Importance of Eliminating Errors in Cryptographic
7967 Computations, J. Cryptology 14 (2001) 2, 101-119,
7968 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
7971 *) MIPS assembler BIGNUM division bug fix.
7974 *) Disabled incorrect Alpha assembler code.
7977 *) Fix PKCS#7 decode routines so they correctly update the length
7978 after reading an EOC for the EXPLICIT tag.
7980 [This change does not apply to 0.9.7.]
7982 *) Fix bug in PKCS#12 key generation routines. This was triggered
7983 if a 3DES key was generated with a 0 initial byte. Include
7984 PKCS12_BROKEN_KEYGEN compilation option to retain the old
7985 (but broken) behaviour.
7988 *) Enhance bctest to search for a working bc along $PATH and print
7990 [Tim Rice <tim@multitalents.net> via Richard Levitte]
7992 *) Fix memory leaks in err.c: free err_data string if necessary;
7993 don't write to the wrong index in ERR_set_error_data.
7996 *) Implement ssl23_peek (analogous to ssl23_read), which previously
8000 *) Replace rdtsc with _emit statements for VC++ version 5.
8001 [Jeremy Cooper <jeremy@baymoo.org>]
8003 *) Make it possible to reuse SSLv2 sessions.
8006 *) In copy_email() check for >= 0 as a return value for
8007 X509_NAME_get_index_by_NID() since 0 is a valid index.
8008 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
8010 *) Avoid coredump with unsupported or invalid public keys by checking if
8011 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
8012 PKCS7_verify() fails with non detached data.
8015 *) Don't use getenv in library functions when run as setuid/setgid.
8016 New function OPENSSL_issetugid().
8019 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
8020 due to incorrect handling of multi-threading:
8022 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
8024 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
8026 3. Count how many times MemCheck_off() has been called so that
8027 nested use can be treated correctly. This also avoids
8028 inband-signalling in the previous code (which relied on the
8029 assumption that thread ID 0 is impossible).
8032 *) Add "-rand" option also to s_client and s_server.
8035 *) Fix CPU detection on Irix 6.x.
8036 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
8037 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
8039 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
8042 [This change does not apply to 0.9.7.]
8044 *) Use the cached encoding of an X509_NAME structure rather than
8045 copying it. This is apparently the reason for the libsafe "errors"
8046 but the code is actually correct.
8049 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
8050 Bleichenbacher's DSA attack.
8051 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
8052 to be set and top=0 forces the highest bit to be set; top=-1 is new
8053 and leaves the highest bit random.
8054 [Ulf Moeller, Bodo Moeller]
8056 *) In the NCONF_...-based implementations for CONF_... queries
8057 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
8058 a temporary CONF structure with the data component set to NULL
8059 (which gives segmentation faults in lh_retrieve).
8060 Instead, use NULL for the CONF pointer in CONF_get_string and
8061 CONF_get_number (which may use environment variables) and directly
8062 return NULL from CONF_get_section.
8065 *) Fix potential buffer overrun for EBCDIC.
8068 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
8069 keyUsage if basicConstraints absent for a CA.
8072 *) Make SMIME_write_PKCS7() write mail header values with a format that
8073 is more generally accepted (no spaces before the semicolon), since
8074 some programs can't parse those values properly otherwise. Also make
8075 sure BIO's that break lines after each write do not create invalid
8079 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
8080 macros previously used would not encode an empty SEQUENCE OF
8081 and break the signature.
8083 [This change does not apply to 0.9.7.]
8085 *) Zero the premaster secret after deriving the master secret in
8089 *) Add some EVP_add_digest_alias registrations (as found in
8090 OpenSSL_add_all_digests()) to SSL_library_init()
8091 aka OpenSSL_add_ssl_algorithms(). This provides improved
8092 compatibility with peers using X.509 certificates
8093 with unconventional AlgorithmIdentifier OIDs.
8096 *) Fix for Irix with NO_ASM.
8097 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
8099 *) ./config script fixes.
8100 [Ulf Moeller, Richard Levitte]
8102 *) Fix 'openssl passwd -1'.
8105 *) Change PKCS12_key_gen_asc() so it can cope with non null
8106 terminated strings whose length is passed in the passlen
8107 parameter, for example from PEM callbacks. This was done
8108 by adding an extra length parameter to asc2uni().
8109 [Steve Henson, reported by <oddissey@samsung.co.kr>]
8111 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
8112 call failed, free the DSA structure.
8115 *) Fix to uni2asc() to cope with zero length Unicode strings.
8116 These are present in some PKCS#12 files.
8119 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
8120 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
8121 when writing a 32767 byte record.
8122 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
8124 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
8125 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
8127 (RSA objects have a reference count access to which is protected
8128 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
8129 so they are meant to be shared between threads.)
8130 [Bodo Moeller, Geoff Thorpe; original patch submitted by
8131 "Reddie, Steven" <Steven.Reddie@ca.com>]
8133 *) Fix a deadlock in CRYPTO_mem_leaks().
8136 *) Use better test patterns in bntest.
8139 *) rand_win.c fix for Borland C.
8142 *) BN_rshift bugfix for n == 0.
8145 *) Add a 'bctest' script that checks for some known 'bc' bugs
8146 so that 'make test' does not abort just because 'bc' is broken.
8149 *) Store verify_result within SSL_SESSION also for client side to
8150 avoid potential security hole. (Re-used sessions on the client side
8151 always resulted in verify_result==X509_V_OK, not using the original
8152 result of the server certificate verification.)
8155 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
8156 SSL3_RT_APPLICATION_DATA, return 0.
8157 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
8161 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
8162 releases, have been re-implemented by renaming the previous
8163 implementations of ssl2_read and ssl3_read to ssl2_read_internal
8164 and ssl3_read_internal, respectively, and adding 'peek' parameters
8165 to them. The new ssl[23]_{read,peek} functions are calls to
8166 ssl[23]_read_internal with the 'peek' flag set appropriately.
8167 A 'peek' parameter has also been added to ssl3_read_bytes, which
8168 does the actual work for ssl3_read_internal.
8171 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
8172 the method-specific "init()" handler. Also clean up ex_data after
8173 calling the method-specific "finish()" handler. Previously, this was
8174 happening the other way round.
8177 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
8178 The previous value, 12, was not always sufficient for BN_mod_exp().
8181 *) Make sure that shared libraries get the internal name engine with
8182 the full version number and not just 0. This should mark the
8183 shared libraries as not backward compatible. Of course, this should
8184 be changed again when we can guarantee backward binary compatibility.
8187 *) Fix typo in get_cert_by_subject() in by_dir.c
8188 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
8190 *) Rework the system to generate shared libraries:
8192 - Make note of the expected extension for the shared libraries and
8193 if there is a need for symbolic links from for example libcrypto.so.0
8194 to libcrypto.so.0.9.7. There is extended info in Configure for
8197 - Make as few rebuilds of the shared libraries as possible.
8199 - Still avoid linking the OpenSSL programs with the shared libraries.
8201 - When installing, install the shared libraries separately from the
8205 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
8207 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
8208 and not in SSL_clear because the latter is also used by the
8209 accept/connect functions; previously, the settings made by
8210 SSL_set_read_ahead would be lost during the handshake.
8211 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
8213 *) Correct util/mkdef.pl to be selective about disabled algorithms.
8214 Previously, it would create entries for disableed algorithms no
8218 *) Added several new manual pages for SSL_* function.
8221 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
8223 *) In ssl23_get_client_hello, generate an error message when faced
8224 with an initial SSL 3.0/TLS record that is too small to contain the
8225 first two bytes of the ClientHello message, i.e. client_version.
8226 (Note that this is a pathologic case that probably has never happened
8227 in real life.) The previous approach was to use the version number
8228 from the record header as a substitute; but our protocol choice
8229 should not depend on that one because it is not authenticated
8230 by the Finished messages.
8233 *) More robust randomness gathering functions for Windows.
8234 [Jeffrey Altman <jaltman@columbia.edu>]
8236 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
8237 not set then we don't setup the error code for issuer check errors
8238 to avoid possibly overwriting other errors which the callback does
8239 handle. If an application does set the flag then we assume it knows
8240 what it is doing and can handle the new informational codes
8244 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
8245 a general "ANY" type, as such it should be able to decode anything
8246 including tagged types. However it didn't check the class so it would
8247 wrongly interpret tagged types in the same way as their universal
8248 counterpart and unknown types were just rejected. Changed so that the
8249 tagged and unknown types are handled in the same way as a SEQUENCE:
8250 that is the encoding is stored intact. There is also a new type
8251 "V_ASN1_OTHER" which is used when the class is not universal, in this
8252 case we have no idea what the actual type is so we just lump them all
8256 *) On VMS, stdout may very well lead to a file that is written to
8257 in a record-oriented fashion. That means that every write() will
8258 write a separate record, which will be read separately by the
8259 programs trying to read from it. This can be very confusing.
8261 The solution is to put a BIO filter in the way that will buffer
8262 text until a linefeed is reached, and then write everything a
8263 line at a time, so every record written will be an actual line,
8264 not chunks of lines and not (usually doesn't happen, but I've
8265 seen it once) several lines in one record. BIO_f_linebuffer() is
8268 Currently, it's a VMS-only method, because that's where it has
8269 been tested well enough.
8272 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
8273 it can return incorrect results.
8274 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
8275 but it was in 0.9.6-beta[12].)
8278 *) Disable the check for content being present when verifying detached
8279 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
8280 include zero length content when signing messages.
8283 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
8284 BIO_ctrl (for BIO pairs).
8287 *) Add DSO method for VMS.
8290 *) Bug fix: Montgomery multiplication could produce results with the
8294 *) Add RPM specification openssl.spec and modify it to build three
8295 packages. The default package contains applications, application
8296 documentation and run-time libraries. The devel package contains
8297 include files, static libraries and function documentation. The
8298 doc package contains the contents of the doc directory. The original
8299 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
8302 *) Add a large number of documentation files for many SSL routines.
8303 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
8305 *) Add a configuration entry for Sony News 4.
8306 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
8308 *) Don't set the two most significant bits to one when generating a
8309 random number < q in the DSA library.
8312 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
8313 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
8314 the underlying transport is blocking) if a handshake took place.
8315 (The default behaviour is needed by applications such as s_client
8316 and s_server that use select() to determine when to use SSL_read;
8317 but for applications that know in advance when to expect data, it
8318 just makes things more complicated.)
8321 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
8325 *) Add a few more EBCDIC conditionals that make `req' and `x509'
8326 work better on such systems.
8327 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8329 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
8330 Update PKCS12_parse() so it copies the friendlyName and the
8331 keyid to the certificates aux info.
8334 *) Fix bug in PKCS7_verify() which caused an infinite loop
8335 if there was more than one signature.
8336 [Sven Uszpelkat <su@celocom.de>]
8338 *) Major change in util/mkdef.pl to include extra information
8339 about each symbol, as well as presentig variables as well
8340 as functions. This change means that there's n more need
8341 to rebuild the .num files when some algorithms are excluded.
8344 *) Allow the verify time to be set by an application,
8345 rather than always using the current time.
8348 *) Phase 2 verify code reorganisation. The certificate
8349 verify code now looks up an issuer certificate by a
8350 number of criteria: subject name, authority key id
8351 and key usage. It also verifies self signed certificates
8352 by the same criteria. The main comparison function is
8353 X509_check_issued() which performs these checks.
8355 Lot of changes were necessary in order to support this
8356 without completely rewriting the lookup code.
8358 Authority and subject key identifier are now cached.
8360 The LHASH 'certs' is X509_STORE has now been replaced
8361 by a STACK_OF(X509_OBJECT). This is mainly because an
8362 LHASH can't store or retrieve multiple objects with
8363 the same hash value.
8365 As a result various functions (which were all internal
8366 use only) have changed to handle the new X509_STORE
8367 structure. This will break anything that messed round
8368 with X509_STORE internally.
8370 The functions X509_STORE_add_cert() now checks for an
8371 exact match, rather than just subject name.
8373 The X509_STORE API doesn't directly support the retrieval
8374 of multiple certificates matching a given criteria, however
8375 this can be worked round by performing a lookup first
8376 (which will fill the cache with candidate certificates)
8377 and then examining the cache for matches. This is probably
8378 the best we can do without throwing out X509_LOOKUP
8379 entirely (maybe later...).
8381 The X509_VERIFY_CTX structure has been enhanced considerably.
8383 All certificate lookup operations now go via a get_issuer()
8384 callback. Although this currently uses an X509_STORE it
8385 can be replaced by custom lookups. This is a simple way
8386 to bypass the X509_STORE hackery necessary to make this
8387 work and makes it possible to use more efficient techniques
8388 in future. A very simple version which uses a simple
8389 STACK for its trusted certificate store is also provided
8390 using X509_STORE_CTX_trusted_stack().
8392 The verify_cb() and verify() callbacks now have equivalents
8393 in the X509_STORE_CTX structure.
8395 X509_STORE_CTX also has a 'flags' field which can be used
8396 to customise the verify behaviour.
8399 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
8400 excludes S/MIME capabilities.
8403 *) When a certificate request is read in keep a copy of the
8404 original encoding of the signed data and use it when outputing
8405 again. Signatures then use the original encoding rather than
8406 a decoded, encoded version which may cause problems if the
8407 request is improperly encoded.
8410 *) For consistency with other BIO_puts implementations, call
8411 buffer_write(b, ...) directly in buffer_puts instead of calling
8414 In BIO_puts, increment b->num_write as in BIO_write.
8415 [Peter.Sylvester@EdelWeb.fr]
8417 *) Fix BN_mul_word for the case where the word is 0. (We have to use
8418 BN_zero, we may not return a BIGNUM with an array consisting of
8422 *) Avoid calling abort() from within the library when problems are
8423 detected, except if preprocessor symbols have been defined
8424 (such as REF_CHECK, BN_DEBUG etc.).
8427 *) New openssl application 'rsautl'. This utility can be
8428 used for low level RSA operations. DER public key
8429 BIO/fp routines also added.
8432 *) New Configure entry and patches for compiling on QNX 4.
8433 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
8435 *) A demo state-machine implementation was sponsored by
8436 Nuron (http://www.nuron.com/) and is now available in
8437 demos/state_machine.
8440 *) New options added to the 'dgst' utility for signature
8441 generation and verification.
8444 *) Unrecognized PKCS#7 content types are now handled via a
8445 catch all ASN1_TYPE structure. This allows unsupported
8446 types to be stored as a "blob" and an application can
8447 encode and decode it manually.
8450 *) Fix various signed/unsigned issues to make a_strex.c
8452 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
8454 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
8455 length if passed a buffer. ASN1_INTEGER_to_BN failed
8456 if passed a NULL BN and its argument was negative.
8457 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
8459 *) Modification to PKCS#7 encoding routines to output definite
8460 length encoding. Since currently the whole structures are in
8461 memory there's not real point in using indefinite length
8462 constructed encoding. However if OpenSSL is compiled with
8463 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
8466 *) Added BIO_vprintf() and BIO_vsnprintf().
8469 *) Added more prefixes to parse for in the the strings written
8470 through a logging bio, to cover all the levels that are available
8471 through syslog. The prefixes are now:
8473 PANIC, EMERG, EMR => LOG_EMERG
8474 ALERT, ALR => LOG_ALERT
8475 CRIT, CRI => LOG_CRIT
8476 ERROR, ERR => LOG_ERR
8477 WARNING, WARN, WAR => LOG_WARNING
8478 NOTICE, NOTE, NOT => LOG_NOTICE
8479 INFO, INF => LOG_INFO
8480 DEBUG, DBG => LOG_DEBUG
8482 and as before, if none of those prefixes are present at the
8483 beginning of the string, LOG_ERR is chosen.
8485 On Win32, the LOG_* levels are mapped according to this:
8487 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
8488 LOG_WARNING => EVENTLOG_WARNING_TYPE
8489 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
8493 *) Made it possible to reconfigure with just the configuration
8494 argument "reconf" or "reconfigure". The command line arguments
8495 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
8496 and are retrieved from there when reconfiguring.
8500 [Assar Westerlund <assar@sics.se>, Richard Levitte]
8502 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
8505 *) The obj_dat.pl script was messing up the sorting of object
8506 names. The reason was that it compared the quoted version
8507 of strings as a result "OCSP" > "OCSP Signing" because
8508 " > SPACE. Changed script to store unquoted versions of
8509 names and add quotes on output. It was also omitting some
8510 names from the lookup table if they were given a default
8511 value (that is if SN is missing it is given the same
8512 value as LN and vice versa), these are now added on the
8513 grounds that if an object has a name we should be able to
8514 look it up. Finally added warning output when duplicate
8515 short or long names are found.
8518 *) Changes needed for Tandem NSK.
8519 [Scott Uroff <scott@xypro.com>]
8521 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
8522 RSA_padding_check_SSLv23(), special padding was never detected
8523 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
8524 version rollback attacks was not effective.
8526 In s23_clnt.c, don't use special rollback-attack detection padding
8527 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
8528 client; similarly, in s23_srvr.c, don't do the rollback check if
8529 SSL 2.0 is the only protocol enabled in the server.
8532 *) Make it possible to get hexdumps of unprintable data with 'openssl
8533 asn1parse'. By implication, the functions ASN1_parse_dump() and
8534 BIO_dump_indent() are added.
8537 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
8538 these print out strings and name structures based on various
8539 flags including RFC2253 support and proper handling of
8540 multibyte characters. Added options to the 'x509' utility
8541 to allow the various flags to be set.
8544 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
8545 Also change the functions X509_cmp_current_time() and
8546 X509_gmtime_adj() work with an ASN1_TIME structure,
8547 this will enable certificates using GeneralizedTime in validity
8548 dates to be checked.
8551 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
8552 negative public key encodings) on by default,
8553 NO_NEG_PUBKEY_BUG can be set to disable it.
8556 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
8557 content octets. An i2c_ASN1_OBJECT is unnecessary because
8558 the encoding can be trivially obtained from the structure.
8561 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
8562 not read locks (CRYPTO_r_[un]lock).
8565 *) A first attempt at creating official support for shared
8566 libraries through configuration. I've kept it so the
8567 default is static libraries only, and the OpenSSL programs
8568 are always statically linked for now, but there are
8569 preparations for dynamic linking in place.
8570 This has been tested on Linux and Tru64.
8573 *) Randomness polling function for Win9x, as described in:
8574 Peter Gutmann, Software Generation of Practically Strong
8578 *) Fix so PRNG is seeded in req if using an already existing
8582 *) New options to smime application. -inform and -outform
8583 allow alternative formats for the S/MIME message including
8584 PEM and DER. The -content option allows the content to be
8585 specified separately. This should allow things like Netscape
8586 form signing output easier to verify.
8589 *) Fix the ASN1 encoding of tags using the 'long form'.
8592 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
8593 STRING types. These convert content octets to and from the
8594 underlying type. The actual tag and length octets are
8595 already assumed to have been read in and checked. These
8596 are needed because all other string types have virtually
8597 identical handling apart from the tag. By having versions
8598 of the ASN1 functions that just operate on content octets
8599 IMPLICIT tagging can be handled properly. It also allows
8600 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
8601 and ASN1_INTEGER are identical apart from the tag.
8604 *) Change the handling of OID objects as follows:
8606 - New object identifiers are inserted in objects.txt, following
8607 the syntax given in objects.README.
8608 - objects.pl is used to process obj_mac.num and create a new
8610 - obj_dat.pl is used to create a new obj_dat.h, using the data in
8613 This is currently kind of a hack, and the perl code in objects.pl
8614 isn't very elegant, but it works as I intended. The simplest way
8615 to check that it worked correctly is to look in obj_dat.h and
8616 check the array nid_objs and make sure the objects haven't moved
8617 around (this is important!). Additions are OK, as well as
8618 consistent name changes.
8621 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
8624 *) Addition of the command line parameter '-rand file' to 'openssl req'.
8625 The given file adds to whatever has already been seeded into the
8626 random pool through the RANDFILE configuration file option or
8627 environment variable, or the default random state file.
8630 *) mkstack.pl now sorts each macro group into lexical order.
8631 Previously the output order depended on the order the files
8632 appeared in the directory, resulting in needless rewriting
8636 *) Patches to make OpenSSL compile under Win32 again. Mostly
8637 work arounds for the VC++ problem that it treats func() as
8638 func(void). Also stripped out the parts of mkdef.pl that
8639 added extra typesafe functions: these no longer exist.
8642 *) Reorganisation of the stack code. The macros are now all
8643 collected in safestack.h . Each macro is defined in terms of
8644 a "stack macro" of the form SKM_<name>(type, a, b). The
8645 DEBUG_SAFESTACK is now handled in terms of function casts,
8646 this has the advantage of retaining type safety without the
8647 use of additional functions. If DEBUG_SAFESTACK is not defined
8648 then the non typesafe macros are used instead. Also modified the
8649 mkstack.pl script to handle the new form. Needs testing to see
8650 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
8651 the default if no major problems. Similar behaviour for ASN1_SET_OF
8652 and PKCS12_STACK_OF.
8655 *) When some versions of IIS use the 'NET' form of private key the
8656 key derivation algorithm is different. Normally MD5(password) is
8657 used as a 128 bit RC4 key. In the modified case
8658 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
8659 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
8660 as the old Netscape_RSA functions except they have an additional
8661 'sgckey' parameter which uses the modified algorithm. Also added
8662 an -sgckey command line option to the rsa utility. Thanks to
8663 Adrian Peck <bertie@ncipher.com> for posting details of the modified
8664 algorithm to openssl-dev.
8667 *) The evp_local.h macros were using 'c.##kname' which resulted in
8668 invalid expansion on some systems (SCO 5.0.5 for example).
8669 Corrected to 'c.kname'.
8670 [Phillip Porch <root@theporch.com>]
8672 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
8673 a STACK of email addresses from a certificate or request, these look
8674 in the subject name and the subject alternative name extensions and
8675 omit any duplicate addresses.
8678 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
8679 This makes DSA verification about 2 % faster.
8682 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
8683 (meaning that now 2^5 values will be precomputed, which is only 4 KB
8684 plus overhead for 1024 bit moduli).
8685 This makes exponentiations about 0.5 % faster for 1024 bit
8686 exponents (as measured by "openssl speed rsa2048").
8689 *) Rename memory handling macros to avoid conflicts with other
8691 Malloc => OPENSSL_malloc
8692 Malloc_locked => OPENSSL_malloc_locked
8693 Realloc => OPENSSL_realloc
8694 Free => OPENSSL_free
8697 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
8698 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
8701 *) CygWin32 support.
8702 [John Jarvie <jjarvie@newsguy.com>]
8704 *) The type-safe stack code has been rejigged. It is now only compiled
8705 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
8706 by default all type-specific stack functions are "#define"d back to
8707 standard stack functions. This results in more streamlined output
8708 but retains the type-safety checking possibilities of the original
8712 *) The STACK code has been cleaned up, and certain type declarations
8713 that didn't make a lot of sense have been brought in line. This has
8714 also involved a cleanup of sorts in safestack.h to more correctly
8715 map type-safe stack functions onto their plain stack counterparts.
8716 This work has also resulted in a variety of "const"ifications of
8717 lots of the code, especially "_cmp" operations which should normally
8718 be prototyped with "const" parameters anyway.
8721 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
8722 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
8723 (The PRNG state consists of two parts, the large pool 'state' and 'md',
8724 where all of 'md' is used each time the PRNG is used, but 'state'
8725 is used only indexed by a cyclic counter. As entropy may not be
8726 well distributed from the beginning, 'md' is important as a
8727 chaining variable. However, the output function chains only half
8728 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
8729 all of 'md', and seeding with STATE_SIZE dummy bytes will result
8730 in all of 'state' being rewritten, with the new values depending
8731 on virtually all of 'md'. This overcomes the 80 bit limitation.)
8734 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
8735 the handshake is continued after ssl_verify_cert_chain();
8736 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
8737 can lead to 'unexplainable' connection aborts later.
8738 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
8740 *) Major EVP API cipher revision.
8741 Add hooks for extra EVP features. This allows various cipher
8742 parameters to be set in the EVP interface. Support added for variable
8743 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
8744 setting of RC2 and RC5 parameters.
8746 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
8749 Remove lots of duplicated code from the EVP library. For example *every*
8750 cipher init() function handles the 'iv' in the same way according to the
8751 cipher mode. They also all do nothing if the 'key' parameter is NULL and
8752 for CFB and OFB modes they zero ctx->num.
8754 New functionality allows removal of S/MIME code RC2 hack.
8756 Most of the routines have the same form and so can be declared in terms
8759 By shifting this to the top level EVP_CipherInit() it can be removed from
8760 all individual ciphers. If the cipher wants to handle IVs or keys
8761 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
8764 Change lots of functions like EVP_EncryptUpdate() to now return a
8765 value: although software versions of the algorithms cannot fail
8766 any installed hardware versions can.
8769 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
8770 this option is set, tolerate broken clients that send the negotiated
8771 protocol version number instead of the requested protocol version
8775 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
8776 i.e. non-zero for export ciphersuites, zero otherwise.
8777 Previous versions had this flag inverted, inconsistent with
8778 rsa_tmp_cb (..._TMP_RSA_CB).
8779 [Bodo Moeller; problem reported by Amit Chopra]
8781 *) Add missing DSA library text string. Work around for some IIS
8782 key files with invalid SEQUENCE encoding.
8785 *) Add a document (doc/standards.txt) that list all kinds of standards
8786 and so on that are implemented in OpenSSL.
8789 *) Enhance c_rehash script. Old version would mishandle certificates
8790 with the same subject name hash and wouldn't handle CRLs at all.
8791 Added -fingerprint option to crl utility, to support new c_rehash
8795 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
8798 *) Fix for SSL server purpose checking. Server checking was
8799 rejecting certificates which had extended key usage present
8800 but no ssl client purpose.
8801 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
8803 *) Make PKCS#12 code work with no password. The PKCS#12 spec
8804 is a little unclear about how a blank password is handled.
8805 Since the password in encoded as a BMPString with terminating
8806 double NULL a zero length password would end up as just the
8807 double NULL. However no password at all is different and is
8808 handled differently in the PKCS#12 key generation code. NS
8809 treats a blank password as zero length. MSIE treats it as no
8810 password on export: but it will try both on import. We now do
8811 the same: PKCS12_parse() tries zero length and no password if
8812 the password is set to "" or NULL (NULL is now a valid password:
8813 it wasn't before) as does the pkcs12 application.
8816 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
8817 perror when PEM_read_bio_X509_REQ fails, the error message must
8818 be obtained from the error queue.
8821 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
8822 it in ERR_remove_state if appropriate, and change ERR_get_state
8823 accordingly to avoid race conditions (this is necessary because
8824 thread_hash is no longer constant once set).
8827 *) Bugfix for linux-elf makefile.one.
8830 *) RSA_get_default_method() will now cause a default
8831 RSA_METHOD to be chosen if one doesn't exist already.
8832 Previously this was only set during a call to RSA_new()
8833 or RSA_new_method(NULL) meaning it was possible for
8834 RSA_get_default_method() to return NULL.
8837 *) Added native name translation to the existing DSO code
8838 that will convert (if the flag to do so is set) filenames
8839 that are sufficiently small and have no path information
8840 into a canonical native form. Eg. "blah" converted to
8841 "libblah.so" or "blah.dll" etc.
8844 *) New function ERR_error_string_n(e, buf, len) which is like
8845 ERR_error_string(e, buf), but writes at most 'len' bytes
8846 including the 0 terminator. For ERR_error_string_n, 'buf'
8848 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
8850 *) CONF library reworked to become more general. A new CONF
8851 configuration file reader "class" is implemented as well as a
8852 new functions (NCONF_*, for "New CONF") to handle it. The now
8853 old CONF_* functions are still there, but are reimplemented to
8854 work in terms of the new functions. Also, a set of functions
8855 to handle the internal storage of the configuration data is
8856 provided to make it easier to write new configuration file
8857 reader "classes" (I can definitely see something reading a
8858 configuration file in XML format, for example), called _CONF_*,
8859 or "the configuration storage API"...
8861 The new configuration file reading functions are:
8863 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
8864 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
8866 NCONF_default, NCONF_WIN32
8868 NCONF_dump_fp, NCONF_dump_bio
8870 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
8871 NCONF_new creates a new CONF object. This works in the same way
8872 as other interfaces in OpenSSL, like the BIO interface.
8873 NCONF_dump_* dump the internal storage of the configuration file,
8874 which is useful for debugging. All other functions take the same
8875 arguments as the old CONF_* functions wth the exception of the
8876 first that must be a `CONF *' instead of a `LHASH *'.
8878 To make it easer to use the new classes with the old CONF_* functions,
8879 the function CONF_set_default_method is provided.
8882 *) Add '-tls1' option to 'openssl ciphers', which was already
8883 mentioned in the documentation but had not been implemented.
8884 (This option is not yet really useful because even the additional
8885 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
8888 *) Initial DSO code added into libcrypto for letting OpenSSL (and
8889 OpenSSL-based applications) load shared libraries and bind to
8890 them in a portable way.
8891 [Geoff Thorpe, with contributions from Richard Levitte]
8893 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
8895 *) Make sure _lrotl and _lrotr are only used with MSVC.
8897 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
8898 (the default implementation of RAND_status).
8900 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
8901 to '-clrext' (= clear extensions), as intended and documented.
8902 [Bodo Moeller; inconsistency pointed out by Michael Attili
8905 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
8906 was larger than the MD block size.
8907 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
8909 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
8910 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
8911 using the passed key: if the passed key was a private key the result
8912 of X509_print(), for example, would be to print out all the private key
8916 *) des_quad_cksum() byte order bug fix.
8917 [Ulf Möller, using the problem description in krb4-0.9.7, where
8918 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
8920 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
8922 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
8924 *) For easily testing in shell scripts whether some command
8925 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
8926 returns with exit code 0 iff no command of the given name is available.
8927 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
8928 the output goes to stdout and nothing is printed to stderr.
8929 Additional arguments are always ignored.
8931 Since for each cipher there is a command of the same name,
8932 the 'no-cipher' compilation switches can be tested this way.
8934 ('openssl no-XXX' is not able to detect pseudo-commands such
8935 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
8938 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
8941 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
8942 is set; it will be thrown away anyway because each handshake creates
8944 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
8945 to parameters -- in previous versions (since OpenSSL 0.9.3) the
8946 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
8947 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
8950 *) New s_client option -ign_eof: EOF at stdin is ignored, and
8951 'Q' and 'R' lose their special meanings (quit/renegotiate).
8952 This is part of what -quiet does; unlike -quiet, -ign_eof
8953 does not suppress any output.
8956 *) Add compatibility options to the purpose and trust code. The
8957 purpose X509_PURPOSE_ANY is "any purpose" which automatically
8958 accepts a certificate or CA, this was the previous behaviour,
8959 with all the associated security issues.
8961 X509_TRUST_COMPAT is the old trust behaviour: only and
8962 automatically trust self signed roots in certificate store. A
8963 new trust setting X509_TRUST_DEFAULT is used to specify that
8964 a purpose has no associated trust setting and it should instead
8965 use the value in the default purpose.
8968 *) Fix the PKCS#8 DSA private key code so it decodes keys again
8969 and fix a memory leak.
8972 *) In util/mkerr.pl (which implements 'make errors'), preserve
8973 reason strings from the previous version of the .c file, as
8974 the default to have only downcase letters (and digits) in
8975 automatically generated reasons codes is not always appropriate.
8978 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
8979 using strerror. Previously, ERR_reason_error_string() returned
8980 library names as reason strings for SYSerr; but SYSerr is a special
8981 case where small numbers are errno values, not library numbers.
8984 *) Add '-dsaparam' option to 'openssl dhparam' application. This
8985 converts DSA parameters into DH parameters. (When creating parameters,
8986 DSA_generate_parameters is used.)
8989 *) Include 'length' (recommended exponent length) in C code generated
8990 by 'openssl dhparam -C'.
8993 *) The second argument to set_label in perlasm was already being used
8994 so couldn't be used as a "file scope" flag. Moved to third argument
8998 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
8999 instead of RAND_bytes for encryption IVs and salts.
9002 *) Include RAND_status() into RAND_METHOD instead of implementing
9003 it only for md_rand.c Otherwise replacing the PRNG by calling
9004 RAND_set_rand_method would be impossible.
9007 *) Don't let DSA_generate_key() enter an infinite loop if the random
9008 number generation fails.
9011 *) New 'rand' application for creating pseudo-random output.
9014 *) Added configuration support for Linux/IA64
9015 [Rolf Haberrecker <rolf@suse.de>]
9017 *) Assembler module support for Mingw32.
9020 *) Shared library support for HPUX (in shlib/).
9021 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
9023 *) Shared library support for Solaris gcc.
9024 [Lutz Behnke <behnke@trustcenter.de>]
9026 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
9028 *) PKCS7_encrypt() was adding text MIME headers twice because they
9029 were added manually and by SMIME_crlf_copy().
9032 *) In bntest.c don't call BN_rand with zero bits argument.
9033 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
9035 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
9036 case was implemented. This caused BN_div_recp() to fail occasionally.
9039 *) Add an optional second argument to the set_label() in the perl
9040 assembly language builder. If this argument exists and is set
9041 to 1 it signals that the assembler should use a symbol whose
9042 scope is the entire file, not just the current function. This
9043 is needed with MASM which uses the format label:: for this scope.
9044 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
9046 *) Change the ASN1 types so they are typedefs by default. Before
9047 almost all types were #define'd to ASN1_STRING which was causing
9048 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
9052 *) Change names of new functions to the new get1/get0 naming
9053 convention: After 'get1', the caller owns a reference count
9054 and has to call ..._free; 'get0' returns a pointer to some
9055 data structure without incrementing reference counters.
9056 (Some of the existing 'get' functions increment a reference
9057 counter, some don't.)
9058 Similarly, 'set1' and 'add1' functions increase reference
9059 counters or duplicate objects.
9062 *) Allow for the possibility of temp RSA key generation failure:
9063 the code used to assume it always worked and crashed on failure.
9066 *) Fix potential buffer overrun problem in BIO_printf().
9067 [Ulf Möller, using public domain code by Patrick Powell; problem
9068 pointed out by David Sacerdote <das33@cornell.edu>]
9070 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
9071 RAND_egd() and RAND_status(). In the command line application,
9072 the EGD socket can be specified like a seed file using RANDFILE
9076 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
9077 Some CAs (e.g. Verisign) distribute certificates in this form.
9080 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
9081 list to exclude them. This means that no special compilation option
9082 is needed to use anonymous DH: it just needs to be included in the
9086 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
9087 EVP_MD_type. The old functionality is available in a new macro called
9088 EVP_MD_md(). Change code that uses it and update docs.
9091 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
9092 where the 'void *' argument is replaced by a function pointer argument.
9093 Previously 'void *' was abused to point to functions, which works on
9094 many platforms, but is not correct. As these functions are usually
9095 called by macros defined in OpenSSL header files, most source code
9096 should work without changes.
9099 *) <openssl/opensslconf.h> (which is created by Configure) now contains
9100 sections with information on -D... compiler switches used for
9101 compiling the library so that applications can see them. To enable
9102 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
9103 must be defined. E.g.,
9104 #define OPENSSL_ALGORITHM_DEFINES
9105 #include <openssl/opensslconf.h>
9106 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
9107 [Richard Levitte, Ulf and Bodo Möller]
9109 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
9113 *) Change the 'other' type in certificate aux info to a STACK_OF
9114 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
9115 the required ASN1 format: arbitrary types determined by an OID.
9118 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
9119 argument to 'req'. This is not because the function is newer or
9120 better than others it just uses the work 'NEW' in the certificate
9121 request header lines. Some software needs this.
9124 *) Reorganise password command line arguments: now passwords can be
9125 obtained from various sources. Delete the PEM_cb function and make
9126 it the default behaviour: i.e. if the callback is NULL and the
9127 usrdata argument is not NULL interpret it as a null terminated pass
9128 phrase. If usrdata and the callback are NULL then the pass phrase
9129 is prompted for as usual.
9132 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
9133 the support is automatically enabled. The resulting binaries will
9134 autodetect the card and use it if present.
9135 [Ben Laurie and Compaq Inc.]
9137 *) Work around for Netscape hang bug. This sends certificate request
9138 and server done in one record. Since this is perfectly legal in the
9139 SSL/TLS protocol it isn't a "bug" option and is on by default. See
9140 the bugs/SSLv3 entry for more info.
9143 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
9146 *) Add -rand argument to smime and pkcs12 applications and read/write
9150 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
9153 *) Add command line password options to the remaining applications.
9156 *) Bug fix for BN_div_recp() for numerators with an even number of
9160 *) More tests in bntest.c, and changed test_bn output.
9163 *) ./config recognizes MacOS X now.
9166 *) Bug fix for BN_div() when the first words of num and divsor are
9167 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
9170 *) Add support for various broken PKCS#8 formats, and command line
9171 options to produce them.
9174 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
9175 get temporary BIGNUMs from a BN_CTX.
9178 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
9182 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
9183 include a #define from the old name to the new. The original intent
9184 was that statically linked binaries could for example just call
9185 SSLeay_add_all_ciphers() to just add ciphers to the table and not
9186 link with digests. This never worked becayse SSLeay_add_all_digests()
9187 and SSLeay_add_all_ciphers() were in the same source file so calling
9188 one would link with the other. They are now in separate source files.
9191 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
9194 *) Use a less unusual form of the Miller-Rabin primality test (it used
9195 a binary algorithm for exponentiation integrated into the Miller-Rabin
9196 loop, our standard modexp algorithms are faster).
9199 *) Support for the EBCDIC character set completed.
9200 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
9202 *) Source code cleanups: use const where appropriate, eliminate casts,
9203 use void * instead of char * in lhash.
9206 *) Bugfix: ssl3_send_server_key_exchange was not restartable
9207 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
9208 this the server could overwrite ephemeral keys that the client
9212 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
9213 using 50 iterations of the Rabin-Miller test.
9215 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
9216 iterations of the Rabin-Miller test as required by the appendix
9217 to FIPS PUB 186[-1]) instead of DSA_is_prime.
9218 As BN_is_prime_fasttest includes trial division, DSA parameter
9219 generation becomes much faster.
9221 This implies a change for the callback functions in DSA_is_prime
9222 and DSA_generate_parameters: The callback function is called once
9223 for each positive witness in the Rabin-Miller test, not just
9224 occasionally in the inner loop; and the parameters to the
9225 callback function now provide an iteration count for the outer
9226 loop rather than for the current invocation of the inner loop.
9227 DSA_generate_parameters additionally can call the callback
9228 function with an 'iteration count' of -1, meaning that a
9229 candidate has passed the trial division test (when q is generated
9230 from an application-provided seed, trial division is skipped).
9233 *) New function BN_is_prime_fasttest that optionally does trial
9234 division before starting the Rabin-Miller test and has
9235 an additional BN_CTX * argument (whereas BN_is_prime always
9236 has to allocate at least one BN_CTX).
9237 'callback(1, -1, cb_arg)' is called when a number has passed the
9238 trial division stage.
9241 *) Fix for bug in CRL encoding. The validity dates weren't being handled
9245 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
9248 *) New function BN_pseudo_rand().
9251 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
9252 bignum version of BN_from_montgomery() with the working code from
9253 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
9257 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
9258 made it impossible to use the same SSL_SESSION data structure in
9259 SSL2 clients in multiple threads.
9262 *) The return value of RAND_load_file() no longer counts bytes obtained
9263 by stat(). RAND_load_file(..., -1) is new and uses the complete file
9264 to seed the PRNG (previously an explicit byte count was required).
9265 [Ulf Möller, Bodo Möller]
9267 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
9268 used (char *) instead of (void *) and had casts all over the place.
9271 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
9274 *) Retain source code compatibility for BN_prime_checks macro:
9275 BN_is_prime(..., BN_prime_checks, ...) now uses
9276 BN_prime_checks_for_size to determine the appropriate number of
9277 Rabin-Miller iterations.
9280 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
9281 DH_CHECK_P_NOT_SAFE_PRIME.
9282 (Check if this is true? OpenPGP calls them "strong".)
9285 *) Merge the functionality of "dh" and "gendh" programs into a new program
9286 "dhparam". The old programs are retained for now but will handle DH keys
9287 (instead of parameters) in future.
9290 *) Make the ciphers, s_server and s_client programs check the return values
9291 when a new cipher list is set.
9294 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
9295 ciphers. Before when the 56bit ciphers were enabled the sorting was
9298 The syntax for the cipher sorting has been extended to support sorting by
9299 cipher-strength (using the strength_bits hard coded in the tables).
9300 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
9302 Fix a bug in the cipher-command parser: when supplying a cipher command
9303 string with an "undefined" symbol (neither command nor alphanumeric
9304 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
9305 an error is flagged.
9307 Due to the strength-sorting extension, the code of the
9308 ssl_create_cipher_list() function was completely rearranged. I hope that
9309 the readability was also increased :-)
9310 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
9312 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
9313 for the first serial number and places 2 in the serial number file. This
9314 avoids problems when the root CA is created with serial number zero and
9315 the first user certificate has the same issuer name and serial number
9319 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
9320 the new code. Add documentation for this stuff.
9323 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
9324 X509_*() to X509at_*() on the grounds that they don't handle X509
9325 structures and behave in an analagous way to the X509v3 functions:
9326 they shouldn't be called directly but wrapper functions should be used
9329 So we also now have some wrapper functions that call the X509at functions
9330 when passed certificate requests. (TO DO: similar things can be done with
9331 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
9332 things. Some of these need some d2i or i2d and print functionality
9333 because they handle more complex structures.)
9336 *) Add missing #ifndefs that caused missing symbols when building libssl
9337 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
9338 NO_RSA in ssl/s2*.c.
9339 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
9341 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
9342 has a return value which indicates the quality of the random data
9343 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
9344 error queue. New function RAND_pseudo_bytes() generates output that is
9345 guaranteed to be unique but not unpredictable. RAND_add is like
9346 RAND_seed, but takes an extra argument for an entropy estimate
9347 (RAND_seed always assumes full entropy).
9350 *) Do more iterations of Rabin-Miller probable prime test (specifically,
9351 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
9352 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
9353 in crypto/bn/bn_prime.c for the complete table). This guarantees a
9354 false-positive rate of at most 2^-80 for random input.
9357 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
9360 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
9361 in the 0.9.5 release), this returns the chain
9362 from an X509_CTX structure with a dup of the stack and all
9363 the X509 reference counts upped: so the stack will exist
9364 after X509_CTX_cleanup() has been called. Modify pkcs12.c
9367 Also make SSL_SESSION_print() print out the verify return
9371 *) Add manpage for the pkcs12 command. Also change the default
9372 behaviour so MAC iteration counts are used unless the new
9373 -nomaciter option is used. This improves file security and
9374 only older versions of MSIE (4.0 for example) need it.
9377 *) Honor the no-xxx Configure options when creating .DEF files.
9380 *) Add PKCS#10 attributes to field table: challengePassword,
9381 unstructuredName and unstructuredAddress. These are taken from
9382 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
9383 international characters are used.
9385 More changes to X509_ATTRIBUTE code: allow the setting of types
9386 based on strings. Remove the 'loc' parameter when adding
9387 attributes because these will be a SET OF encoding which is sorted
9391 *) Initial changes to the 'req' utility to allow request generation
9392 automation. This will allow an application to just generate a template
9393 file containing all the field values and have req construct the
9396 Initial support for X509_ATTRIBUTE handling. Stacks of these are
9397 used all over the place including certificate requests and PKCS#7
9398 structures. They are currently handled manually where necessary with
9399 some primitive wrappers for PKCS#7. The new functions behave in a
9400 manner analogous to the X509 extension functions: they allow
9401 attributes to be looked up by NID and added.
9403 Later something similar to the X509V3 code would be desirable to
9404 automatically handle the encoding, decoding and printing of the
9405 more complex types. The string types like challengePassword can
9406 be handled by the string table functions.
9408 Also modified the multi byte string table handling. Now there is
9409 a 'global mask' which masks out certain types. The table itself
9410 can use the flag STABLE_NO_MASK to ignore the mask setting: this
9411 is useful when for example there is only one permissible type
9412 (as in countryName) and using the mask might result in no valid
9416 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
9417 SSL_get_peer_finished to allow applications to obtain the latest
9418 Finished messages sent to the peer or expected from the peer,
9419 respectively. (SSL_get_peer_finished is usually the Finished message
9420 actually received from the peer, otherwise the protocol will be aborted.)
9422 As the Finished message are message digests of the complete handshake
9423 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
9424 be used for external authentication procedures when the authentication
9425 provided by SSL/TLS is not desired or is not enough.
9428 *) Enhanced support for Alpha Linux is added. Now ./config checks if
9429 the host supports BWX extension and if Compaq C is present on the
9430 $PATH. Just exploiting of the BWX extension results in 20-30%
9431 performance kick for some algorithms, e.g. DES and RC4 to mention
9432 a couple. Compaq C in turn generates ~20% faster code for MD5 and
9436 *) Add support for MS "fast SGC". This is arguably a violation of the
9437 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
9438 weak crypto and after checking the certificate is SGC a second one
9439 with strong crypto. MS SGC stops the first handshake after receiving
9440 the server certificate message and sends a second client hello. Since
9441 a server will typically do all the time consuming operations before
9442 expecting any further messages from the client (server key exchange
9443 is the most expensive) there is little difference between the two.
9445 To get OpenSSL to support MS SGC we have to permit a second client
9446 hello message after we have sent server done. In addition we have to
9447 reset the MAC if we do get this second client hello.
9450 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
9451 if a DER encoded private key is RSA or DSA traditional format. Changed
9452 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
9453 format DER encoded private key. Newer code should use PKCS#8 format which
9454 has the key type encoded in the ASN1 structure. Added DER private key
9455 support to pkcs8 application.
9458 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
9459 ciphersuites has been selected (as required by the SSL 3/TLS 1
9460 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
9461 is set, we interpret this as a request to violate the specification
9462 (the worst that can happen is a handshake failure, and 'correct'
9463 behaviour would result in a handshake failure anyway).
9466 *) In SSL_CTX_add_session, take into account that there might be multiple
9467 SSL_SESSION structures with the same session ID (e.g. when two threads
9468 concurrently obtain them from an external cache).
9469 The internal cache can handle only one SSL_SESSION with a given ID,
9470 so if there's a conflict, we now throw out the old one to achieve
9474 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
9475 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
9476 some routines that use cipher OIDs: some ciphers do not have OIDs
9477 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
9481 *) Simplify the trust setting structure and code. Now we just have
9482 two sequences of OIDs for trusted and rejected settings. These will
9483 typically have values the same as the extended key usage extension
9484 and any application specific purposes.
9486 The trust checking code now has a default behaviour: it will just
9487 check for an object with the same NID as the passed id. Functions can
9488 be provided to override either the default behaviour or the behaviour
9489 for a given id. SSL client, server and email already have functions
9490 in place for compatibility: they check the NID and also return "trusted"
9491 if the certificate is self signed.
9494 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
9495 traditional format into an EVP_PKEY structure.
9498 *) Add a password callback function PEM_cb() which either prompts for
9499 a password if usr_data is NULL or otherwise assumes it is a null
9500 terminated password. Allow passwords to be passed on command line
9501 environment or config files in a few more utilities.
9504 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
9505 keys. Add some short names for PKCS#8 PBE algorithms and allow them
9506 to be specified on the command line for the pkcs8 and pkcs12 utilities.
9507 Update documentation.
9510 *) Support for ASN1 "NULL" type. This could be handled before by using
9511 ASN1_TYPE but there wasn't any function that would try to read a NULL
9512 and produce an error if it couldn't. For compatibility we also have
9513 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
9514 don't allocate anything because they don't need to.
9517 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
9519 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
9521 *) Rebuild of the memory allocation routines used by OpenSSL code and
9522 possibly others as well. The purpose is to make an interface that
9523 provide hooks so anyone can build a separate set of allocation and
9524 deallocation routines to be used by OpenSSL, for example memory
9525 pool implementations, or something else, which was previously hard
9526 since Malloc(), Realloc() and Free() were defined as macros having
9527 the values malloc, realloc and free, respectively (except for Win32
9528 compilations). The same is provided for memory debugging code.
9529 OpenSSL already comes with functionality to find memory leaks, but
9530 this gives people a chance to debug other memory problems.
9532 With these changes, a new set of functions and macros have appeared:
9534 CRYPTO_set_mem_debug_functions() [F]
9535 CRYPTO_get_mem_debug_functions() [F]
9536 CRYPTO_dbg_set_options() [F]
9537 CRYPTO_dbg_get_options() [F]
9538 CRYPTO_malloc_debug_init() [M]
9540 The memory debug functions are NULL by default, unless the library
9541 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
9542 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
9543 gives the standard debugging functions that come with OpenSSL) or
9544 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
9545 provided by the library user) must be used. When the standard
9546 debugging functions are used, CRYPTO_dbg_set_options can be used to
9547 request additional information:
9548 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
9549 the CRYPTO_MDEBUG_xxx macro when compiling the library.
9551 Also, things like CRYPTO_set_mem_functions will always give the
9552 expected result (the new set of functions is used for allocation
9553 and deallocation) at all times, regardless of platform and compiler
9556 To finish it up, some functions that were never use in any other
9557 way than through macros have a new API and new semantic:
9560 CRYPTO_dbg_realloc()
9563 All macros of value have retained their old syntax.
9564 [Richard Levitte and Bodo Moeller]
9566 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
9567 ordering of SMIMECapabilities wasn't in "strength order" and there
9568 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
9572 *) Some ASN1 types with illegal zero length encoding (INTEGER,
9573 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
9574 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
9576 *) Merge in my S/MIME library for OpenSSL. This provides a simple
9577 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
9578 functionality to handle multipart/signed properly) and a utility
9579 called 'smime' to call all this stuff. This is based on code I
9580 originally wrote for Celo who have kindly allowed it to be
9581 included in OpenSSL.
9584 *) Add variants des_set_key_checked and des_set_key_unchecked of
9585 des_set_key (aka des_key_sched). Global variable des_check_key
9586 decides which of these is called by des_set_key; this way
9587 des_check_key behaves as it always did, but applications and
9588 the library itself, which was buggy for des_check_key == 1,
9589 have a cleaner way to pick the version they need.
9592 *) New function PKCS12_newpass() which changes the password of a
9596 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
9597 dynamic mix. In both cases the ids can be used as an index into the
9598 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
9599 functions so they accept a list of the field values and the
9600 application doesn't need to directly manipulate the X509_TRUST
9604 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
9608 *) Modify the way the V3 extension code looks up extensions. This now
9609 works in a similar way to the object code: we have some "standard"
9610 extensions in a static table which is searched with OBJ_bsearch()
9611 and the application can add dynamic ones if needed. The file
9612 crypto/x509v3/ext_dat.h now has the info: this file needs to be
9613 updated whenever a new extension is added to the core code and kept
9614 in ext_nid order. There is a simple program 'tabtest.c' which checks
9615 this. New extensions are not added too often so this file can readily
9616 be maintained manually.
9618 There are two big advantages in doing things this way. The extensions
9619 can be looked up immediately and no longer need to be "added" using
9620 X509V3_add_standard_extensions(): this function now does nothing.
9621 [Side note: I get *lots* of email saying the extension code doesn't
9622 work because people forget to call this function]
9623 Also no dynamic allocation is done unless new extensions are added:
9624 so if we don't add custom extensions there is no need to call
9625 X509V3_EXT_cleanup().
9628 *) Modify enc utility's salting as follows: make salting the default. Add a
9629 magic header, so unsalted files fail gracefully instead of just decrypting
9630 to garbage. This is because not salting is a big security hole, so people
9631 should be discouraged from doing it.
9634 *) Fixes and enhancements to the 'x509' utility. It allowed a message
9635 digest to be passed on the command line but it only used this
9636 parameter when signing a certificate. Modified so all relevant
9637 operations are affected by the digest parameter including the
9638 -fingerprint and -x509toreq options. Also -x509toreq choked if a
9639 DSA key was used because it didn't fix the digest.
9642 *) Initial certificate chain verify code. Currently tests the untrusted
9643 certificates for consistency with the verify purpose (which is set
9644 when the X509_STORE_CTX structure is set up) and checks the pathlength.
9646 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
9647 this is because it will reject chains with invalid extensions whereas
9648 every previous version of OpenSSL and SSLeay made no checks at all.
9650 Trust code: checks the root CA for the relevant trust settings. Trust
9651 settings have an initial value consistent with the verify purpose: e.g.
9652 if the verify purpose is for SSL client use it expects the CA to be
9653 trusted for SSL client use. However the default value can be changed to
9654 permit custom trust settings: one example of this would be to only trust
9655 certificates from a specific "secure" set of CAs.
9657 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
9658 which should be used for version portability: especially since the
9659 verify structure is likely to change more often now.
9661 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
9662 to set them. If not set then assume SSL clients will verify SSL servers
9665 Two new options to the verify program: -untrusted allows a set of
9666 untrusted certificates to be passed in and -purpose which sets the
9667 intended purpose of the certificate. If a purpose is set then the
9668 new chain verify code is used to check extension consistency.
9671 *) Support for the authority information access extension.
9674 *) Modify RSA and DSA PEM read routines to transparently handle
9675 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
9676 public keys in a format compatible with certificate
9677 SubjectPublicKeyInfo structures. Unfortunately there were already
9678 functions called *_PublicKey_* which used various odd formats so
9679 these are retained for compatibility: however the DSA variants were
9680 never in a public release so they have been deleted. Changed dsa/rsa
9681 utilities to handle the new format: note no releases ever handled public
9682 keys so we should be OK.
9684 The primary motivation for this change is to avoid the same fiasco
9685 that dogs private keys: there are several incompatible private key
9686 formats some of which are standard and some OpenSSL specific and
9687 require various evil hacks to allow partial transparent handling and
9688 even then it doesn't work with DER formats. Given the option anything
9689 other than PKCS#8 should be dumped: but the other formats have to
9690 stay in the name of compatibility.
9692 With public keys and the benefit of hindsight one standard format
9693 is used which works with EVP_PKEY, RSA or DSA structures: though
9694 it clearly returns an error if you try to read the wrong kind of key.
9696 Added a -pubkey option to the 'x509' utility to output the public key.
9697 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
9698 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
9699 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
9700 that do the same as the EVP_PKEY_assign_*() except they up the
9701 reference count of the added key (they don't "swallow" the
9705 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
9706 CRLs would fail if the file contained no certificates or no CRLs:
9707 added a new function to read in both types and return the number
9708 read: this means that if none are read it will be an error. The
9709 DER versions of the certificate and CRL reader would always fail
9710 because it isn't possible to mix certificates and CRLs in DER format
9711 without choking one or the other routine. Changed this to just read
9712 a certificate: this is the best we can do. Also modified the code
9713 in apps/verify.c to take notice of return codes: it was previously
9714 attempting to read in certificates from NULL pointers and ignoring
9715 any errors: this is one reason why the cert and CRL reader seemed
9716 to work. It doesn't check return codes from the default certificate
9717 routines: these may well fail if the certificates aren't installed.
9720 *) Code to support otherName option in GeneralName.
9723 *) First update to verify code. Change the verify utility
9724 so it warns if it is passed a self signed certificate:
9725 for consistency with the normal behaviour. X509_verify
9726 has been modified to it will now verify a self signed
9727 certificate if *exactly* the same certificate appears
9728 in the store: it was previously impossible to trust a
9729 single self signed certificate. This means that:
9730 openssl verify ss.pem
9731 now gives a warning about a self signed certificate but
9732 openssl verify -CAfile ss.pem ss.pem
9736 *) For servers, store verify_result in SSL_SESSION data structure
9737 (and add it to external session representation).
9738 This is needed when client certificate verifications fails,
9739 but an application-provided verification callback (set by
9740 SSL_CTX_set_cert_verify_callback) allows accepting the session
9741 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
9742 but returns 1): When the session is reused, we have to set
9743 ssl->verify_result to the appropriate error code to avoid
9745 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
9747 *) Fix a bug in the new PKCS#7 code: it didn't consider the
9748 case in PKCS7_dataInit() where the signed PKCS7 structure
9749 didn't contain any existing data because it was being created.
9750 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
9752 *) Add a salt to the key derivation routines in enc.c. This
9753 forms the first 8 bytes of the encrypted file. Also add a
9754 -S option to allow a salt to be input on the command line.
9757 *) New function X509_cmp(). Oddly enough there wasn't a function
9758 to compare two certificates. We do this by working out the SHA1
9759 hash and comparing that. X509_cmp() will be needed by the trust
9763 *) SSL_get1_session() is like SSL_get_session(), but increments
9764 the reference count in the SSL_SESSION returned.
9765 [Geoff Thorpe <geoff@eu.c2.net>]
9767 *) Fix for 'req': it was adding a null to request attributes.
9768 Also change the X509_LOOKUP and X509_INFO code to handle
9769 certificate auxiliary information.
9772 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
9776 *) Add the possibility to add extra information to the memory leak
9777 detecting output, to form tracebacks, showing from where each
9778 allocation was originated: CRYPTO_push_info("constant string") adds
9779 the string plus current file name and line number to a per-thread
9780 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
9781 is like calling CYRPTO_pop_info() until the stack is empty.
9782 Also updated memory leak detection code to be multi-thread-safe.
9785 *) Add options -text and -noout to pkcs7 utility and delete the
9786 encryption options which never did anything. Update docs.
9789 *) Add options to some of the utilities to allow the pass phrase
9790 to be included on either the command line (not recommended on
9791 OSes like Unix) or read from the environment. Update the
9792 manpages and fix a few bugs.
9795 *) Add a few manpages for some of the openssl commands.
9798 *) Fix the -revoke option in ca. It was freeing up memory twice,
9799 leaking and not finding already revoked certificates.
9802 *) Extensive changes to support certificate auxiliary information.
9803 This involves the use of X509_CERT_AUX structure and X509_AUX
9804 functions. An X509_AUX function such as PEM_read_X509_AUX()
9805 can still read in a certificate file in the usual way but it
9806 will also read in any additional "auxiliary information". By
9807 doing things this way a fair degree of compatibility can be
9808 retained: existing certificates can have this information added
9809 using the new 'x509' options.
9811 Current auxiliary information includes an "alias" and some trust
9812 settings. The trust settings will ultimately be used in enhanced
9813 certificate chain verification routines: currently a certificate
9814 can only be trusted if it is self signed and then it is trusted
9818 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
9819 The problem was that one of the replacement routines had not been working
9820 since SSLeay releases. For now the offending routine has been replaced
9821 with non-optimised assembler. Even so, this now gives around 95%
9822 performance improvement for 1024 bit RSA signs.
9825 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
9826 handling. Most clients have the effective key size in bits equal to
9827 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
9828 A few however don't do this and instead use the size of the decrypted key
9829 to determine the RC2 key length and the AlgorithmIdentifier to determine
9830 the effective key length. In this case the effective key length can still
9831 be 40 bits but the key length can be 168 bits for example. This is fixed
9832 by manually forcing an RC2 key into the EVP_PKEY structure because the
9833 EVP code can't currently handle unusual RC2 key sizes: it always assumes
9834 the key length and effective key length are equal.
9837 *) Add a bunch of functions that should simplify the creation of
9838 X509_NAME structures. Now you should be able to do:
9839 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
9840 and have it automatically work out the correct field type and fill in
9841 the structures. The more adventurous can try:
9842 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
9843 and it will (hopefully) work out the correct multibyte encoding.
9846 *) Change the 'req' utility to use the new field handling and multibyte
9847 copy routines. Before the DN field creation was handled in an ad hoc
9848 way in req, ca, and x509 which was rather broken and didn't support
9849 BMPStrings or UTF8Strings. Since some software doesn't implement
9850 BMPStrings or UTF8Strings yet, they can be enabled using the config file
9851 using the dirstring_type option. See the new comment in the default
9852 openssl.cnf for more info.
9855 *) Make crypto/rand/md_rand.c more robust:
9856 - Assure unique random numbers after fork().
9857 - Make sure that concurrent threads access the global counter and
9858 md serializably so that we never lose entropy in them
9859 or use exactly the same state in multiple threads.
9860 Access to the large state is not always serializable because
9861 the additional locking could be a performance killer, and
9862 md should be large enough anyway.
9865 *) New file apps/app_rand.c with commonly needed functionality
9866 for handling the random seed file.
9868 Use the random seed file in some applications that previously did not:
9870 dsaparam -genkey (which also ignored its '-rand' option),
9873 x509 (when signing).
9874 Except on systems with /dev/urandom, it is crucial to have a random
9875 seed file at least for key creation, DSA signing, and for DH exchanges;
9876 for RSA signatures we could do without one.
9878 gendh and gendsa (unlike genrsa) used to read only the first byte
9879 of each file listed in the '-rand' option. The function as previously
9880 found in genrsa is now in app_rand.c and is used by all programs
9881 that support '-rand'.
9884 *) In RAND_write_file, use mode 0600 for creating files;
9885 don't just chmod when it may be too late.
9888 *) Report an error from X509_STORE_load_locations
9889 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
9892 *) New function ASN1_mbstring_copy() this copies a string in either
9893 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
9894 into an ASN1_STRING type. A mask of permissible types is passed
9895 and it chooses the "minimal" type to use or an error if not type
9899 *) Add function equivalents to the various macros in asn1.h. The old
9900 macros are retained with an M_ prefix. Code inside the library can
9901 use the M_ macros. External code (including the openssl utility)
9902 should *NOT* in order to be "shared library friendly".
9905 *) Add various functions that can check a certificate's extensions
9906 to see if it usable for various purposes such as SSL client,
9907 server or S/MIME and CAs of these types. This is currently
9908 VERY EXPERIMENTAL but will ultimately be used for certificate chain
9909 verification. Also added a -purpose flag to x509 utility to
9910 print out all the purposes.
9913 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
9917 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
9918 for, obtain and decode and extension and obtain its critical flag.
9919 This allows all the necessary extension code to be handled in a
9920 single function call.
9923 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
9924 platforms. See crypto/rc4/rc4_enc.c for further details.
9927 *) New -noout option to asn1parse. This causes no output to be produced
9928 its main use is when combined with -strparse and -out to extract data
9929 from a file (which may not be in ASN.1 format).
9932 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
9933 when producing the local key id.
9934 [Richard Levitte <levitte@stacken.kth.se>]
9936 *) New option -dhparam in s_server. This allows a DH parameter file to be
9937 stated explicitly. If it is not stated then it tries the first server
9938 certificate file. The previous behaviour hard coded the filename
9942 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
9943 a public key to be input or output. For example:
9944 openssl rsa -in key.pem -pubout -out pubkey.pem
9945 Also added necessary DSA public key functions to handle this.
9948 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
9949 in the message. This was handled by allowing
9950 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
9951 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
9953 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
9954 to the end of the strings whereas this didn't. This would cause problems
9955 if strings read with d2i_ASN1_bytes() were later modified.
9956 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
9958 *) Fix for base64 decode bug. When a base64 bio reads only one line of
9959 data and it contains EOF it will end up returning an error. This is
9960 caused by input 46 bytes long. The cause is due to the way base64
9961 BIOs find the start of base64 encoded data. They do this by trying a
9962 trial decode on each line until they find one that works. When they
9963 do a flag is set and it starts again knowing it can pass all the
9964 data directly through the decoder. Unfortunately it doesn't reset
9965 the context it uses. This means that if EOF is reached an attempt
9966 is made to pass two EOFs through the context and this causes the
9967 resulting error. This can also cause other problems as well. As is
9968 usual with these problems it takes *ages* to find and the fix is
9969 trivial: move one line.
9970 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
9972 *) Ugly workaround to get s_client and s_server working under Windows. The
9973 old code wouldn't work because it needed to select() on sockets and the
9974 tty (for keypresses and to see if data could be written). Win32 only
9975 supports select() on sockets so we select() with a 1s timeout on the
9976 sockets and then see if any characters are waiting to be read, if none
9977 are present then we retry, we also assume we can always write data to
9978 the tty. This isn't nice because the code then blocks until we've
9979 received a complete line of data and it is effectively polling the
9980 keyboard at 1s intervals: however it's quite a bit better than not
9981 working at all :-) A dedicated Windows application might handle this
9982 with an event loop for example.
9985 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
9986 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
9987 will be called when RSA_sign() and RSA_verify() are used. This is useful
9988 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
9989 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
9990 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
9991 This necessitated the support of an extra signature type NID_md5_sha1
9992 for SSL signatures and modifications to the SSL library to use it instead
9993 of calling RSA_public_decrypt() and RSA_private_encrypt().
9996 *) Add new -verify -CAfile and -CApath options to the crl program, these
9997 will lookup a CRL issuers certificate and verify the signature in a
9998 similar way to the verify program. Tidy up the crl program so it
9999 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
10000 less strict. It will now permit CRL extensions even if it is not
10001 a V2 CRL: this will allow it to tolerate some broken CRLs.
10004 *) Initialize all non-automatic variables each time one of the openssl
10005 sub-programs is started (this is necessary as they may be started
10006 multiple times from the "OpenSSL>" prompt).
10007 [Lennart Bang, Bodo Moeller]
10009 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
10010 removing all other RSA functionality (this is what NO_RSA does). This
10011 is so (for example) those in the US can disable those operations covered
10012 by the RSA patent while allowing storage and parsing of RSA keys and RSA
10016 *) Non-copying interface to BIO pairs.
10017 (still largely untested)
10020 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
10021 ASCII string. This was handled independently in various places before.
10024 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
10025 UTF8 strings a character at a time.
10028 *) Use client_version from client hello to select the protocol
10029 (s23_srvr.c) and for RSA client key exchange verification
10030 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
10033 *) Add various utility functions to handle SPKACs, these were previously
10034 handled by poking round in the structure internals. Added new function
10035 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
10036 print, verify and generate SPKACs. Based on an original idea from
10037 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
10040 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
10043 *) Allow the config file extension section to be overwritten on the
10044 command line. Based on an original idea from Massimiliano Pala
10045 <madwolf@comune.modena.it>. The new option is called -extensions
10046 and can be applied to ca, req and x509. Also -reqexts to override
10047 the request extensions in req and -crlexts to override the crl extensions
10051 *) Add new feature to the SPKAC handling in ca. Now you can include
10052 the same field multiple times by preceding it by "XXXX." for example:
10055 this is the same syntax as used in the req config file.
10058 *) Allow certificate extensions to be added to certificate requests. These
10059 are specified in a 'req_extensions' option of the req section of the
10060 config file. They can be printed out with the -text option to req but
10061 are otherwise ignored at present.
10064 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
10065 data read consists of only the final block it would not decrypted because
10066 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
10067 A misplaced 'break' also meant the decrypted final block might not be
10068 copied until the next read.
10071 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
10072 a few extra parameters to the DH structure: these will be useful if
10073 for example we want the value of 'q' or implement X9.42 DH.
10076 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
10077 provides hooks that allow the default DSA functions or functions on a
10078 "per key" basis to be replaced. This allows hardware acceleration and
10079 hardware key storage to be handled without major modification to the
10080 library. Also added low level modexp hooks and CRYPTO_EX structure and
10081 associated functions.
10084 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
10085 as "read only": it can't be written to and the buffer it points to will
10086 not be freed. Reading from a read only BIO is much more efficient than
10087 a normal memory BIO. This was added because there are several times when
10088 an area of memory needs to be read from a BIO. The previous method was
10089 to create a memory BIO and write the data to it, this results in two
10090 copies of the data and an O(n^2) reading algorithm. There is a new
10091 function BIO_new_mem_buf() which creates a read only memory BIO from
10092 an area of memory. Also modified the PKCS#7 routines to use read only
10096 *) Bugfix: ssl23_get_client_hello did not work properly when called in
10097 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
10098 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
10099 but a retry condition occured while trying to read the rest.
10102 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
10103 NID_pkcs7_encrypted by default: this was wrong since this should almost
10104 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
10105 the encrypted data type: this is a more sensible place to put it and it
10106 allows the PKCS#12 code to be tidied up that duplicated this
10110 *) Changed obj_dat.pl script so it takes its input and output files on
10111 the command line. This should avoid shell escape redirection problems
10115 *) Initial support for certificate extension requests, these are included
10116 in things like Xenroll certificate requests. Included functions to allow
10117 extensions to be obtained and added.
10120 *) -crlf option to s_client and s_server for sending newlines as
10121 CRLF (as required by many protocols).
10124 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
10126 *) Install libRSAglue.a when OpenSSL is built with RSAref.
10127 [Ralf S. Engelschall]
10129 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
10130 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
10132 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
10136 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
10137 DH parameters/keys (q is lost during that conversion, but the resulting
10138 DH parameters contain its length).
10140 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
10141 much faster than DH_generate_parameters (which creates parameters
10142 where p = 2*q + 1), and also the smaller q makes DH computations
10143 much more efficient (160-bit exponentiation instead of 1024-bit
10144 exponentiation); so this provides a convenient way to support DHE
10145 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
10146 utter importance to use
10147 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
10149 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
10150 when such DH parameters are used, because otherwise small subgroup
10151 attacks may become possible!
10154 *) Avoid memory leak in i2d_DHparams.
10157 *) Allow the -k option to be used more than once in the enc program:
10158 this allows the same encrypted message to be read by multiple recipients.
10161 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
10162 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
10163 it will always use the numerical form of the OID, even if it has a short
10167 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
10168 method only got called if p,q,dmp1,dmq1,iqmp components were present,
10169 otherwise bn_mod_exp was called. In the case of hardware keys for example
10170 no private key components need be present and it might store extra data
10171 in the RSA structure, which cannot be accessed from bn_mod_exp.
10172 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
10173 private key operations.
10176 *) Added support for SPARC Linux.
10179 *) pem_password_cb function type incompatibly changed from
10180 typedef int pem_password_cb(char *buf, int size, int rwflag);
10182 ....(char *buf, int size, int rwflag, void *userdata);
10183 so that applications can pass data to their callbacks:
10184 The PEM[_ASN1]_{read,write}... functions and macros now take an
10185 additional void * argument, which is just handed through whenever
10186 the password callback is called.
10187 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
10189 New function SSL_CTX_set_default_passwd_cb_userdata.
10191 Compatibility note: As many C implementations push function arguments
10192 onto the stack in reverse order, the new library version is likely to
10193 interoperate with programs that have been compiled with the old
10194 pem_password_cb definition (PEM_whatever takes some data that
10195 happens to be on the stack as its last argument, and the callback
10196 just ignores this garbage); but there is no guarantee whatsoever that
10199 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
10200 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
10201 problems not only on Windows, but also on some Unix platforms.
10202 To avoid problematic command lines, these definitions are now in an
10203 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
10204 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
10207 *) MIPS III/IV assembler module is reimplemented.
10210 *) More DES library cleanups: remove references to srand/rand and
10211 delete an unused file.
10214 *) Add support for the the free Netwide assembler (NASM) under Win32,
10215 since not many people have MASM (ml) and it can be hard to obtain.
10216 This is currently experimental but it seems to work OK and pass all
10217 the tests. Check out INSTALL.W32 for info.
10220 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
10221 without temporary keys kept an extra copy of the server key,
10222 and connections with temporary keys did not free everything in case
10226 *) New function RSA_check_key and new openssl rsa option -check
10227 for verifying the consistency of RSA keys.
10228 [Ulf Moeller, Bodo Moeller]
10230 *) Various changes to make Win32 compile work:
10231 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
10232 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
10233 comparison" warnings.
10234 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
10237 *) Add a debugging option to PKCS#5 v2 key generation function: when
10238 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
10239 derived keys are printed to stderr.
10242 *) Copy the flags in ASN1_STRING_dup().
10243 [Roman E. Pavlov <pre@mo.msk.ru>]
10245 *) The x509 application mishandled signing requests containing DSA
10246 keys when the signing key was also DSA and the parameters didn't match.
10248 It was supposed to omit the parameters when they matched the signing key:
10249 the verifying software was then supposed to automatically use the CA's
10250 parameters if they were absent from the end user certificate.
10252 Omitting parameters is no longer recommended. The test was also
10253 the wrong way round! This was probably due to unusual behaviour in
10254 EVP_cmp_parameters() which returns 1 if the parameters match.
10255 This meant that parameters were omitted when they *didn't* match and
10256 the certificate was useless. Certificates signed with 'ca' didn't have
10258 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
10260 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
10261 The interface is as follows:
10262 Applications can use
10263 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
10264 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
10265 "off" is now the default.
10266 The library internally uses
10267 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
10268 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
10269 to disable memory-checking temporarily.
10271 Some inconsistent states that previously were possible (and were
10272 even the default) are now avoided.
10274 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
10275 with each memory chunk allocated; this is occasionally more helpful
10276 than just having a counter.
10278 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
10280 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
10284 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
10285 which largely parallels "options", but is for changing API behaviour,
10286 whereas "options" are about protocol behaviour.
10287 Initial "mode" flags are:
10289 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
10290 a single record has been written.
10291 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
10292 retries use the same buffer location.
10293 (But all of the contents must be
10297 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
10300 *) Fix problems with no-hmac etc.
10301 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
10303 *) New functions RSA_get_default_method(), RSA_set_method() and
10304 RSA_get_method(). These allows replacement of RSA_METHODs without having
10305 to mess around with the internals of an RSA structure.
10308 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
10309 Also really enable memory leak checks in openssl.c and in some
10311 [Chad C. Mulligan, Bodo Moeller]
10313 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
10314 up the length of negative integers. This has now been simplified to just
10315 store the length when it is first determined and use it later, rather
10316 than trying to keep track of where data is copied and updating it to
10318 [Steve Henson, reported by Brien Wheeler
10319 <bwheeler@authentica-security.com>]
10321 *) Add a new function PKCS7_signatureVerify. This allows the verification
10322 of a PKCS#7 signature but with the signing certificate passed to the
10323 function itself. This contrasts with PKCS7_dataVerify which assumes the
10324 certificate is present in the PKCS#7 structure. This isn't always the
10325 case: certificates can be omitted from a PKCS#7 structure and be
10326 distributed by "out of band" means (such as a certificate database).
10329 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
10330 function prototypes in pem.h, also change util/mkdef.pl to add the
10331 necessary function names.
10334 *) mk1mf.pl (used by Windows builds) did not properly read the
10335 options set by Configure in the top level Makefile, and Configure
10336 was not even able to write more than one option correctly.
10337 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
10340 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
10341 file to be loaded from a BIO or FILE pointer. The BIO version will
10342 for example allow memory BIOs to contain config info.
10345 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
10346 Whoever hopes to achieve shared-library compatibility across versions
10347 must use this, not the compile-time macro.
10348 (Exercise 0.9.4: Which is the minimum library version required by
10350 Note: All this applies only to multi-threaded programs, others don't
10354 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
10355 through a BIO pair triggered the default case, i.e.
10356 SSLerr(...,SSL_R_UNKNOWN_STATE).
10359 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
10360 can use the SSL library even if none of the specific BIOs is
10364 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
10365 for the encoded length.
10366 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
10368 *) Add initial documentation of the X509V3 functions.
10371 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
10372 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
10373 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
10374 secure PKCS#8 private key format with a high iteration count.
10377 *) Fix determination of Perl interpreter: A perl or perl5
10378 _directory_ in $PATH was also accepted as the interpreter.
10379 [Ralf S. Engelschall]
10381 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
10382 wrong with it but it was very old and did things like calling
10383 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
10384 unusual formatting.
10387 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
10388 to use the new extension code.
10391 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
10392 with macros. This should make it easier to change their form, add extra
10393 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
10397 *) Add to configuration table a new entry that can specify an alternative
10398 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
10399 according to Mark Crispin <MRC@Panda.COM>.
10403 *) DES CBC did not update the IV. Weird.
10406 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
10407 Changing the behaviour of the former might break existing programs --
10408 where IV updating is needed, des_ncbc_encrypt can be used.
10411 *) When bntest is run from "make test" it drives bc to check its
10412 calculations, as well as internally checking them. If an internal check
10413 fails, it needs to cause bc to give a non-zero result or make test carries
10414 on without noticing the failure. Fixed.
10417 *) DES library cleanups.
10420 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
10421 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
10422 ciphers. NOTE: although the key derivation function has been verified
10423 against some published test vectors it has not been extensively tested
10424 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
10428 *) Instead of "mkdir -p", which is not fully portable, use new
10429 Perl script "util/mkdir-p.pl".
10432 *) Rewrite the way password based encryption (PBE) is handled. It used to
10433 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
10434 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
10435 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
10436 the 'parameter' field of the AlgorithmIdentifier is passed to the
10437 underlying key generation function so it must do its own ASN1 parsing.
10438 This has also changed the EVP_PBE_CipherInit() function which now has a
10439 'parameter' argument instead of literal salt and iteration count values
10440 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
10443 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
10444 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
10445 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
10446 KEY" because this clashed with PKCS#8 unencrypted string. Since this
10447 value was just used as a "magic string" and not used directly its
10448 value doesn't matter.
10451 *) Introduce some semblance of const correctness to BN. Shame C doesn't
10455 *) "linux-sparc64" configuration (ultrapenguin).
10456 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
10457 "linux-sparc" configuration.
10458 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
10460 *) config now generates no-xxx options for missing ciphers.
10463 *) Support the EBCDIC character set (work in progress).
10464 File ebcdic.c not yet included because it has a different license.
10465 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10467 *) Support BS2000/OSD-POSIX.
10468 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10470 *) Make callbacks for key generation use void * instead of char *.
10473 *) Make S/MIME samples compile (not yet tested).
10476 *) Additional typesafe stacks.
10479 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
10483 Changes between 0.9.3 and 0.9.3a [29 May 1999]
10485 *) New configuration variant "sco5-gcc".
10487 *) Updated some demos.
10488 [Sean O Riordain, Wade Scholine]
10490 *) Add missing BIO_free at exit of pkcs12 application.
10493 *) Fix memory leak in conf.c.
10496 *) Updates for Win32 to assembler version of MD5.
10499 *) Set #! path to perl in apps/der_chop to where we found it
10500 instead of using a fixed path.
10503 *) SHA library changes for irix64-mips4-cc.
10506 *) Improvements for VMS support.
10510 Changes between 0.9.2b and 0.9.3 [24 May 1999]
10512 *) Bignum library bug fix. IRIX 6 passes "make test" now!
10513 This also avoids the problems with SC4.2 and unpatched SC5.
10514 [Andy Polyakov <appro@fy.chalmers.se>]
10516 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
10517 These are required because of the typesafe stack would otherwise break
10518 existing code. If old code used a structure member which used to be STACK
10519 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
10520 sk_num or sk_value it would produce an error because the num, data members
10521 are not present in STACK_OF. Now it just produces a warning. sk_set
10522 replaces the old method of assigning a value to sk_value
10523 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
10524 that does this will no longer work (and should use sk_set instead) but
10525 this could be regarded as a "questionable" behaviour anyway.
10528 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
10529 correctly handle encrypted S/MIME data.
10532 *) Change type of various DES function arguments from des_cblock
10533 (which means, in function argument declarations, pointer to char)
10534 to des_cblock * (meaning pointer to array with 8 char elements),
10535 which allows the compiler to do more typechecking; it was like
10536 that back in SSLeay, but with lots of ugly casts.
10538 Introduce new type const_des_cblock.
10541 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
10542 problems: find RecipientInfo structure that matches recipient certificate
10543 and initialise the ASN1 structures properly based on passed cipher.
10546 *) Belatedly make the BN tests actually check the results.
10549 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
10550 to and from BNs: it was completely broken. New compilation option
10551 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
10552 key elements as negative integers.
10555 *) Reorganize and speed up MD5.
10556 [Andy Polyakov <appro@fy.chalmers.se>]
10559 [Richard Levitte <richard@levitte.org>]
10561 *) New option -out to asn1parse to allow the parsed structure to be
10562 output to a file. This is most useful when combined with the -strparse
10563 option to examine the output of things like OCTET STRINGS.
10566 *) Make SSL library a little more fool-proof by not requiring any longer
10567 that SSL_set_{accept,connect}_state be called before
10568 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
10569 in many applications because usually everything *appeared* to work as
10570 intended anyway -- now it really works as intended).
10573 *) Move openssl.cnf out of lib/.
10576 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
10577 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
10578 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
10579 [Ralf S. Engelschall]
10581 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
10582 handle PKCS#7 enveloped data properly.
10583 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
10585 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
10586 copying pointers. The cert_st handling is changed by this in
10587 various ways (and thus what used to be known as ctx->default_cert
10588 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
10589 any longer when s->cert does not give us what we need).
10590 ssl_cert_instantiate becomes obsolete by this change.
10591 As soon as we've got the new code right (possibly it already is?),
10592 we have solved a couple of bugs of the earlier code where s->cert
10593 was used as if it could not have been shared with other SSL structures.
10595 Note that using the SSL API in certain dirty ways now will result
10596 in different behaviour than observed with earlier library versions:
10597 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
10598 does not influence s as it used to.
10600 In order to clean up things more thoroughly, inside SSL_SESSION
10601 we don't use CERT any longer, but a new structure SESS_CERT
10602 that holds per-session data (if available); currently, this is
10603 the peer's certificate chain and, for clients, the server's certificate
10604 and temporary key. CERT holds only those values that can have
10605 meaningful defaults in an SSL_CTX.
10608 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
10609 from the internal representation. Various PKCS#7 fixes: remove some
10610 evil casts and set the enc_dig_alg field properly based on the signing
10614 *) Allow PKCS#12 password to be set from the command line or the
10615 environment. Let 'ca' get its config file name from the environment
10616 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
10620 *) Allow certificate policies extension to use an IA5STRING for the
10621 organization field. This is contrary to the PKIX definition but
10622 VeriSign uses it and IE5 only recognises this form. Document 'x509'
10626 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
10627 without disallowing inline assembler and the like for non-pedantic builds.
10630 *) Support Borland C++ builder.
10631 [Janez Jere <jj@void.si>, modified by Ulf Möller]
10633 *) Support Mingw32.
10636 *) SHA-1 cleanups and performance enhancements.
10637 [Andy Polyakov <appro@fy.chalmers.se>]
10639 *) Sparc v8plus assembler for the bignum library.
10640 [Andy Polyakov <appro@fy.chalmers.se>]
10642 *) Accept any -xxx and +xxx compiler options in Configure.
10645 *) Update HPUX configuration.
10648 *) Add missing sk_<type>_unshift() function to safestack.h
10649 [Ralf S. Engelschall]
10651 *) New function SSL_CTX_use_certificate_chain_file that sets the
10652 "extra_cert"s in addition to the certificate. (This makes sense
10653 only for "PEM" format files, as chains as a whole are not
10657 *) Support verify_depth from the SSL API.
10658 x509_vfy.c had what can be considered an off-by-one-error:
10659 Its depth (which was not part of the external interface)
10660 was actually counting the number of certificates in a chain;
10661 now it really counts the depth.
10664 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
10665 instead of X509err, which often resulted in confusing error
10666 messages since the error codes are not globally unique
10667 (e.g. an alleged error in ssl3_accept when a certificate
10668 didn't match the private key).
10670 *) New function SSL_CTX_set_session_id_context that allows to set a default
10671 value (so that you don't need SSL_set_session_id_context for each
10672 connection using the SSL_CTX).
10675 *) OAEP decoding bug fix.
10678 *) Support INSTALL_PREFIX for package builders, as proposed by
10682 *) New Configure options "threads" and "no-threads". For systems
10683 where the proper compiler options are known (currently Solaris
10684 and Linux), "threads" is the default.
10687 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
10690 *) Install various scripts to $(OPENSSLDIR)/misc, not to
10691 $(INSTALLTOP)/bin -- they shouldn't clutter directories
10692 such as /usr/local/bin.
10695 *) "make linux-shared" to build shared libraries.
10696 [Niels Poppe <niels@netbox.org>]
10698 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
10701 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
10702 extension adding in x509 utility.
10705 *) Remove NOPROTO sections and error code comments.
10708 *) Partial rewrite of the DEF file generator to now parse the ANSI
10712 *) New Configure options --prefix=DIR and --openssldir=DIR.
10715 *) Complete rewrite of the error code script(s). It is all now handled
10716 by one script at the top level which handles error code gathering,
10717 header rewriting and C source file generation. It should be much better
10718 than the old method: it now uses a modified version of Ulf's parser to
10719 read the ANSI prototypes in all header files (thus the old K&R definitions
10720 aren't needed for error creation any more) and do a better job of
10721 translating function codes into names. The old 'ASN1 error code imbedded
10722 in a comment' is no longer necessary and it doesn't use .err files which
10723 have now been deleted. Also the error code call doesn't have to appear all
10724 on one line (which resulted in some large lines...).
10727 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
10730 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
10731 0 (which usually indicates a closed connection), but continue reading.
10734 *) Fix some race conditions.
10737 *) Add support for CRL distribution points extension. Add Certificate
10738 Policies and CRL distribution points documentation.
10741 *) Move the autogenerated header file parts to crypto/opensslconf.h.
10744 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
10745 8 of keying material. Merlin has also confirmed interop with this fix
10746 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
10747 [Merlin Hughes <merlin@baltimore.ie>]
10749 *) Fix lots of warnings.
10750 [Richard Levitte <levitte@stacken.kth.se>]
10752 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
10753 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
10754 [Richard Levitte <levitte@stacken.kth.se>]
10756 *) Fix problems with sizeof(long) == 8.
10757 [Andy Polyakov <appro@fy.chalmers.se>]
10759 *) Change functions to ANSI C.
10762 *) Fix typos in error codes.
10763 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
10765 *) Remove defunct assembler files from Configure.
10768 *) SPARC v8 assembler BIGNUM implementation.
10769 [Andy Polyakov <appro@fy.chalmers.se>]
10771 *) Support for Certificate Policies extension: both print and set.
10772 Various additions to support the r2i method this uses.
10775 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
10776 return a const string when you are expecting an allocated buffer.
10779 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
10780 types DirectoryString and DisplayText.
10783 *) Add code to allow r2i extensions to access the configuration database,
10784 add an LHASH database driver and add several ctx helper functions.
10787 *) Fix an evil bug in bn_expand2() which caused various BN functions to
10788 fail when they extended the size of a BIGNUM.
10791 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
10792 support typesafe stack.
10795 *) Fix typo in SSL_[gs]et_options().
10796 [Nils Frostberg <nils@medcom.se>]
10798 *) Delete various functions and files that belonged to the (now obsolete)
10799 old X509V3 handling code.
10802 *) New Configure option "rsaref".
10805 *) Don't auto-generate pem.h.
10808 *) Introduce type-safe ASN.1 SETs.
10811 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
10812 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
10814 *) Introduce type-safe STACKs. This will almost certainly break lots of code
10815 that links with OpenSSL (well at least cause lots of warnings), but fear
10816 not: the conversion is trivial, and it eliminates loads of evil casts. A
10817 few STACKed things have been converted already. Feel free to convert more.
10818 In the fullness of time, I'll do away with the STACK type altogether.
10821 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
10822 specified in <certfile> by updating the entry in the index.txt file.
10823 This way one no longer has to edit the index.txt file manually for
10824 revoking a certificate. The -revoke option does the gory details now.
10825 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
10827 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
10828 `-text' option at all and this way the `-noout -text' combination was
10829 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
10830 [Ralf S. Engelschall]
10832 *) Make sure a corresponding plain text error message exists for the
10833 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
10834 verify callback function determined that a certificate was revoked.
10835 [Ralf S. Engelschall]
10837 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
10838 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
10839 all available cipers including rc5, which was forgotten until now.
10840 In order to let the testing shell script know which algorithms
10841 are available, a new (up to now undocumented) command
10842 "openssl list-cipher-commands" is used.
10845 *) Bugfix: s_client occasionally would sleep in select() when
10846 it should have checked SSL_pending() first.
10849 *) New functions DSA_do_sign and DSA_do_verify to provide access to
10850 the raw DSA values prior to ASN.1 encoding.
10853 *) Tweaks to Configure
10854 [Niels Poppe <niels@netbox.org>]
10856 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
10860 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
10863 *) New config option to avoid instructions that are illegal on the 80386.
10864 The default code is faster, but requires at least a 486.
10867 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
10868 SSL2_SERVER_VERSION (not used at all) macros, which are now the
10869 same as SSL2_VERSION anyway.
10872 *) New "-showcerts" option for s_client.
10875 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
10876 application. Various cleanups and fixes.
10879 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
10880 modify error routines to work internally. Add error codes and PBE init
10881 to library startup routines.
10884 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
10885 packing functions to asn1 and evp. Changed function names and error
10886 codes along the way.
10889 *) PKCS12 integration: and so it begins... First of several patches to
10890 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
10891 objects to objects.h
10894 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
10895 and display support for Thawte strong extranet extension.
10898 *) Add LinuxPPC support.
10899 [Jeff Dubrule <igor@pobox.org>]
10901 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
10902 bn_div_words in alpha.s.
10903 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
10905 *) Make sure the RSA OAEP test is skipped under -DRSAref because
10906 OAEP isn't supported when OpenSSL is built with RSAref.
10907 [Ulf Moeller <ulf@fitug.de>]
10909 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
10910 so they no longer are missing under -DNOPROTO.
10911 [Soren S. Jorvang <soren@t.dk>]
10914 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
10916 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
10917 doesn't work when the session is reused. Coming soon!
10920 *) Fix a security hole, that allows sessions to be reused in the wrong
10921 context thus bypassing client cert protection! All software that uses
10922 client certs and session caches in multiple contexts NEEDS PATCHING to
10923 allow session reuse! A fuller solution is in the works.
10924 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
10926 *) Some more source tree cleanups (removed obsolete files
10927 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
10928 permission on "config" script to be executable) and a fix for the INSTALL
10930 [Ulf Moeller <ulf@fitug.de>]
10932 *) Remove some legacy and erroneous uses of malloc, free instead of
10934 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
10936 *) Make rsa_oaep_test return non-zero on error.
10937 [Ulf Moeller <ulf@fitug.de>]
10939 *) Add support for native Solaris shared libraries. Configure
10940 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
10941 if someone would make that last step automatic.
10942 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
10944 *) ctx_size was not built with the right compiler during "make links". Fixed.
10947 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
10948 except NULL ciphers". This means the default cipher list will no longer
10949 enable NULL ciphers. They need to be specifically enabled e.g. with
10950 the string "DEFAULT:eNULL".
10953 *) Fix to RSA private encryption routines: if p < q then it would
10954 occasionally produce an invalid result. This will only happen with
10955 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
10958 *) Be less restrictive and allow also `perl util/perlpath.pl
10959 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
10960 because this way one can also use an interpreter named `perl5' (which is
10961 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
10962 installed as `perl').
10963 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10965 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
10966 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10968 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
10969 advapi32.lib to Win32 build and change the pem test comparision
10970 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
10971 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
10972 and crypto/des/ede_cbcm_enc.c.
10975 *) DES quad checksum was broken on big-endian architectures. Fixed.
10978 *) Comment out two functions in bio.h that aren't implemented. Fix up the
10979 Win32 test batch file so it (might) work again. The Win32 test batch file
10980 is horrible: I feel ill....
10983 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
10984 in e_os.h. Audit of header files to check ANSI and non ANSI
10985 sections: 10 functions were absent from non ANSI section and not exported
10986 from Windows DLLs. Fixed up libeay.num for new functions.
10989 *) Make `openssl version' output lines consistent.
10990 [Ralf S. Engelschall]
10992 *) Fix Win32 symbol export lists for BIO functions: Added
10993 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
10994 to ms/libeay{16,32}.def.
10995 [Ralf S. Engelschall]
10997 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
10998 fine under Unix and passes some trivial tests I've now added. But the
10999 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
11000 added to make sure no one expects that this stuff really works in the
11001 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
11002 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
11004 [Ralf S. Engelschall]
11006 *) Fix the generation of two part addresses in perl.
11007 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
11009 *) Add config entry for Linux on MIPS.
11010 [John Tobey <jtobey@channel1.com>]
11012 *) Make links whenever Configure is run, unless we are on Windoze.
11015 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
11016 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
11020 *) Add a useful kludge to allow package maintainers to specify compiler and
11021 other platforms details on the command line without having to patch the
11022 Configure script everytime: One now can use ``perl Configure
11023 <id>:<details>'', i.e. platform ids are allowed to have details appended
11024 to them (seperated by colons). This is treated as there would be a static
11025 pre-configured entry in Configure's %table under key <id> with value
11026 <details> and ``perl Configure <id>'' is called. So, when you want to
11027 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
11028 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
11029 now, which overrides the FreeBSD-elf entry on-the-fly.
11030 [Ralf S. Engelschall]
11032 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
11035 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
11036 on the `perl Configure ...' command line. This way one can compile
11037 OpenSSL libraries with Position Independent Code (PIC) which is needed
11038 for linking it into DSOs.
11039 [Ralf S. Engelschall]
11041 *) Remarkably, export ciphers were totally broken and no-one had noticed!
11045 *) Cleaned up the LICENSE document: The official contact for any license
11046 questions now is the OpenSSL core team under openssl-core@openssl.org.
11047 And add a paragraph about the dual-license situation to make sure people
11048 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
11049 to the OpenSSL toolkit.
11050 [Ralf S. Engelschall]
11052 *) General source tree makefile cleanups: Made `making xxx in yyy...'
11053 display consistent in the source tree and replaced `/bin/rm' by `rm'.
11054 Additonally cleaned up the `make links' target: Remove unnecessary
11055 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
11056 to speed processing and no longer clutter the display with confusing
11057 stuff. Instead only the actually done links are displayed.
11058 [Ralf S. Engelschall]
11060 *) Permit null encryption ciphersuites, used for authentication only. It used
11061 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
11062 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
11066 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
11067 signed attributes when verifying signatures (this would break them),
11068 the detached data encoding was wrong and public keys obtained using
11069 X509_get_pubkey() weren't freed.
11072 *) Add text documentation for the BUFFER functions. Also added a work around
11073 to a Win95 console bug. This was triggered by the password read stuff: the
11074 last character typed gets carried over to the next fread(). If you were
11075 generating a new cert request using 'req' for example then the last
11076 character of the passphrase would be CR which would then enter the first
11080 *) Added the new `Includes OpenSSL Cryptography Software' button as
11081 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
11082 button and can be used by applications based on OpenSSL to show the
11083 relationship to the OpenSSL project.
11084 [Ralf S. Engelschall]
11086 *) Remove confusing variables in function signatures in files
11087 ssl/ssl_lib.c and ssl/ssl.h.
11088 [Lennart Bong <lob@kulthea.stacken.kth.se>]
11090 *) Don't install bss_file.c under PREFIX/include/
11091 [Lennart Bong <lob@kulthea.stacken.kth.se>]
11093 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
11094 functions that return function pointers and has support for NT specific
11095 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
11096 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
11097 unsigned to signed types: this was killing the Win32 compile.
11100 *) Add new certificate file to stack functions,
11101 SSL_add_dir_cert_subjects_to_stack() and
11102 SSL_add_file_cert_subjects_to_stack(). These largely supplant
11103 SSL_load_client_CA_file(), and can be used to add multiple certs easily
11104 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
11105 This means that Apache-SSL and similar packages don't have to mess around
11106 to add as many CAs as they want to the preferred list.
11109 *) Experiment with doxygen documentation. Currently only partially applied to
11111 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
11112 openssl.doxy as the configuration file.
11115 *) Get rid of remaining C++-style comments which strict C compilers hate.
11116 [Ralf S. Engelschall, pointed out by Carlos Amengual]
11118 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
11119 compiled in by default: it has problems with large keys.
11122 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
11123 DH private keys and/or callback functions which directly correspond to
11124 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
11125 is needed for applications which have to configure certificates on a
11126 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
11128 For the RSA certificate situation is makes no difference, but
11129 for the DSA certificate situation this fixes the "no shared cipher"
11130 problem where the OpenSSL cipher selection procedure failed because the
11131 temporary keys were not overtaken from the context and the API provided
11132 no way to reconfigure them.
11133 The new functions now let applications reconfigure the stuff and they
11134 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
11135 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
11136 non-public-API function ssl_cert_instantiate() is used as a helper
11137 function and also to reduce code redundancy inside ssl_rsa.c.
11138 [Ralf S. Engelschall]
11140 *) Move s_server -dcert and -dkey options out of the undocumented feature
11141 area because they are useful for the DSA situation and should be
11142 recognized by the users.
11143 [Ralf S. Engelschall]
11145 *) Fix the cipher decision scheme for export ciphers: the export bits are
11146 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
11147 SSL_EXP_MASK. So, the original variable has to be used instead of the
11148 already masked variable.
11149 [Richard Levitte <levitte@stacken.kth.se>]
11151 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
11152 [Richard Levitte <levitte@stacken.kth.se>]
11154 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
11155 from `int' to `unsigned int' because it's a length and initialized by
11156 EVP_DigestFinal() which expects an `unsigned int *'.
11157 [Richard Levitte <levitte@stacken.kth.se>]
11159 *) Don't hard-code path to Perl interpreter on shebang line of Configure
11160 script. Instead use the usual Shell->Perl transition trick.
11161 [Ralf S. Engelschall]
11163 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
11164 (in addition to RSA certificates) to match the behaviour of `openssl dsa
11165 -noout -modulus' as it's already the case for `openssl rsa -noout
11166 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
11167 currently the public key is printed (a decision which was already done by
11168 `openssl dsa -modulus' in the past) which serves a similar purpose.
11169 Additionally the NO_RSA no longer completely removes the whole -modulus
11170 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
11172 [Ralf S. Engelschall]
11174 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
11175 BIO. See the source (crypto/evp/bio_ok.c) for more info.
11176 [Arne Ansper <arne@ats.cyber.ee>]
11178 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
11179 to be added. Now both 'req' and 'ca' can use new objects defined in the
11183 *) Add cool BIO that does syslog (or event log on NT).
11184 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
11186 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
11187 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
11188 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
11189 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
11192 *) Add preliminary config info for new extension code.
11195 *) Make RSA_NO_PADDING really use no padding.
11196 [Ulf Moeller <ulf@fitug.de>]
11198 *) Generate errors when private/public key check is done.
11201 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
11202 for some CRL extensions and new objects added.
11205 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
11206 key usage extension and fuller support for authority key id.
11209 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
11210 padding method for RSA, which is recommended for new applications in PKCS
11211 #1 v2.0 (RFC 2437, October 1998).
11212 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
11213 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
11214 against Bleichbacher's attack on RSA.
11215 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
11218 *) Updates to the new SSL compression code
11219 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11221 *) Fix so that the version number in the master secret, when passed
11222 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
11223 (because the server will not accept higher), that the version number
11224 is 0x03,0x01, not 0x03,0x00
11225 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11227 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
11228 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
11229 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
11232 *) Support for RAW extensions where an arbitrary extension can be
11233 created by including its DER encoding. See apps/openssl.cnf for
11237 *) Make sure latest Perl versions don't interpret some generated C array
11238 code as Perl array code in the crypto/err/err_genc.pl script.
11239 [Lars Weber <3weber@informatik.uni-hamburg.de>]
11241 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
11242 not many people have the assembler. Various Win32 compilation fixes and
11243 update to the INSTALL.W32 file with (hopefully) more accurate Win32
11244 build instructions.
11247 *) Modify configure script 'Configure' to automatically create crypto/date.h
11248 file under Win32 and also build pem.h from pem.org. New script
11249 util/mkfiles.pl to create the MINFO file on environments that can't do a
11250 'make files': perl util/mkfiles.pl >MINFO should work.
11253 *) Major rework of DES function declarations, in the pursuit of correctness
11254 and purity. As a result, many evil casts evaporated, and some weirdness,
11255 too. You may find this causes warnings in your code. Zapping your evil
11256 casts will probably fix them. Mostly.
11259 *) Fix for a typo in asn1.h. Bug fix to object creation script
11260 obj_dat.pl. It considered a zero in an object definition to mean
11261 "end of object": none of the objects in objects.h have any zeros
11262 so it wasn't spotted.
11263 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
11265 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
11266 Masking (CBCM). In the absence of test vectors, the best I have been able
11267 to do is check that the decrypt undoes the encrypt, so far. Send me test
11268 vectors if you have them.
11271 *) Correct calculation of key length for export ciphers (too much space was
11272 allocated for null ciphers). This has not been tested!
11275 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
11276 message is now correct (it understands "crypto" and "ssl" on its
11277 command line). There is also now an "update" option. This will update
11278 the util/ssleay.num and util/libeay.num files with any new functions.
11280 perl util/mkdef.pl crypto ssl update
11281 it will update them.
11284 *) Overhauled the Perl interface (perl/*):
11285 - ported BN stuff to OpenSSL's different BN library
11286 - made the perl/ source tree CVS-aware
11287 - renamed the package from SSLeay to OpenSSL (the files still contain
11288 their history because I've copied them in the repository)
11289 - removed obsolete files (the test scripts will be replaced
11290 by better Test::Harness variants in the future)
11291 [Ralf S. Engelschall]
11293 *) First cut for a very conservative source tree cleanup:
11294 1. merge various obsolete readme texts into doc/ssleay.txt
11295 where we collect the old documents and readme texts.
11296 2. remove the first part of files where I'm already sure that we no
11297 longer need them because of three reasons: either they are just temporary
11298 files which were left by Eric or they are preserved original files where
11299 I've verified that the diff is also available in the CVS via "cvs diff
11300 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
11301 the crypto/md/ stuff).
11302 [Ralf S. Engelschall]
11304 *) More extension code. Incomplete support for subject and issuer alt
11305 name, issuer and authority key id. Change the i2v function parameters
11306 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
11307 what that's for :-) Fix to ASN1 macro which messed up
11308 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
11311 *) Preliminary support for ENUMERATED type. This is largely copied from the
11315 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
11316 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11318 *) Make sure `make rehash' target really finds the `openssl' program.
11319 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
11321 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
11322 like to hear about it if this slows down other processors.
11325 *) Add CygWin32 platform information to Configure script.
11326 [Alan Batie <batie@aahz.jf.intel.com>]
11328 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
11329 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
11331 *) New program nseq to manipulate netscape certificate sequences
11334 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
11338 *) Fixes to BN code. Previously the default was to define BN_RECURSION
11339 but the BN code had some problems that would cause failures when
11340 doing certificate verification and some other functions.
11341 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11343 *) Add ASN1 and PEM code to support netscape certificate sequences.
11346 *) Add ASN1 and PEM code to support netscape certificate sequences.
11349 *) Add several PKIX and private extended key usage OIDs.
11352 *) Modify the 'ca' program to handle the new extension code. Modify
11353 openssl.cnf for new extension format, add comments.
11356 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
11357 and add a sample to openssl.cnf so req -x509 now adds appropriate
11361 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
11362 error code, add initial support to X509_print() and x509 application.
11365 *) Takes a deep breath and start addding X509 V3 extension support code. Add
11366 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
11367 stuff is currently isolated and isn't even compiled yet.
11370 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
11371 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
11372 Removed the versions check from X509 routines when loading extensions:
11373 this allows certain broken certificates that don't set the version
11374 properly to be processed.
11377 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
11378 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
11379 can still be regenerated with "make depend".
11382 *) Spelling mistake in C version of CAST-128.
11383 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
11385 *) Changes to the error generation code. The perl script err-code.pl
11386 now reads in the old error codes and retains the old numbers, only
11387 adding new ones if necessary. It also only changes the .err files if new
11388 codes are added. The makefiles have been modified to only insert errors
11389 when needed (to avoid needlessly modifying header files). This is done
11390 by only inserting errors if the .err file is newer than the auto generated
11391 C file. To rebuild all the error codes from scratch (the old behaviour)
11392 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
11393 or delete all the .err files.
11396 *) CAST-128 was incorrectly implemented for short keys. The C version has
11397 been fixed, but is untested. The assembler versions are also fixed, but
11398 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
11399 to regenerate it if needed.
11400 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
11401 Hagino <itojun@kame.net>]
11403 *) File was opened incorrectly in randfile.c.
11404 [Ulf Möller <ulf@fitug.de>]
11406 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
11407 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
11408 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
11409 al: it's just almost always a UTCTime. Note this patch adds new error
11410 codes so do a "make errors" if there are problems.
11413 *) Correct Linux 1 recognition in config.
11414 [Ulf Möller <ulf@fitug.de>]
11416 *) Remove pointless MD5 hash when using DSA keys in ca.
11417 [Anonymous <nobody@replay.com>]
11419 *) Generate an error if given an empty string as a cert directory. Also
11420 generate an error if handed NULL (previously returned 0 to indicate an
11421 error, but didn't set one).
11422 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
11424 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
11427 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
11428 parameters. This was causing a warning which killed off the Win32 compile.
11431 *) Remove C++ style comments from crypto/bn/bn_local.h.
11432 [Neil Costigan <neil.costigan@celocom.com>]
11434 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
11435 based on a text string, looking up short and long names and finally
11436 "dot" format. The "dot" format stuff didn't work. Added new function
11437 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
11438 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
11439 OID is not part of the table.
11442 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
11443 X509_LOOKUP_by_alias().
11446 *) Sort openssl functions by name.
11449 *) Get the gendsa program working (hopefully) and add it to app list. Remove
11450 encryption from sample DSA keys (in case anyone is interested the password
11454 *) Make _all_ *_free functions accept a NULL pointer.
11455 [Frans Heymans <fheymans@isaserver.be>]
11457 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
11459 [Anonymous <nobody@replay.com>]
11461 *) s_server should send the CAfile as acceptable CAs, not its own cert.
11462 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11464 *) Don't blow it for numeric -newkey arguments to apps/req.
11465 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11467 *) Temp key "for export" tests were wrong in s3_srvr.c.
11468 [Anonymous <nobody@replay.com>]
11470 *) Add prototype for temp key callback functions
11471 SSL_CTX_set_tmp_{rsa,dh}_callback().
11474 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
11475 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
11478 *) X509_name_add_entry() freed the wrong thing after an error.
11479 [Arne Ansper <arne@ats.cyber.ee>]
11481 *) rsa_eay.c would attempt to free a NULL context.
11482 [Arne Ansper <arne@ats.cyber.ee>]
11484 *) BIO_s_socket() had a broken should_retry() on Windoze.
11485 [Arne Ansper <arne@ats.cyber.ee>]
11487 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
11488 [Arne Ansper <arne@ats.cyber.ee>]
11490 *) Make sure the already existing X509_STORE->depth variable is initialized
11491 in X509_STORE_new(), but document the fact that this variable is still
11492 unused in the certificate verification process.
11493 [Ralf S. Engelschall]
11495 *) Fix the various library and apps files to free up pkeys obtained from
11496 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
11499 *) Fix reference counting in X509_PUBKEY_get(). This makes
11500 demos/maurice/example2.c work, amongst others, probably.
11501 [Steve Henson and Ben Laurie]
11503 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
11504 `openssl' and second, the shortcut symlinks for the `openssl <command>'
11505 are no longer created. This way we have a single and consistent command
11506 line interface `openssl <command>', similar to `cvs <command>'.
11507 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
11509 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
11510 BIT STRING wrapper always have zero unused bits.
11513 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
11516 *) Make the top-level INSTALL documentation easier to understand.
11519 *) Makefiles updated to exit if an error occurs in a sub-directory
11520 make (including if user presses ^C) [Paul Sutton]
11522 *) Make Montgomery context stuff explicit in RSA data structure.
11525 *) Fix build order of pem and err to allow for generated pem.h.
11528 *) Fix renumbering bug in X509_NAME_delete_entry().
11531 *) Enhanced the err-ins.pl script so it makes the error library number
11532 global and can add a library name. This is needed for external ASN1 and
11533 other error libraries.
11536 *) Fixed sk_insert which never worked properly.
11539 *) Fix ASN1 macros so they can handle indefinite length construted
11540 EXPLICIT tags. Some non standard certificates use these: they can now
11544 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
11545 into a single doc/ssleay.txt bundle. This way the information is still
11546 preserved but no longer messes up this directory. Now it's new room for
11547 the new set of documenation files.
11548 [Ralf S. Engelschall]
11550 *) SETs were incorrectly DER encoded. This was a major pain, because they
11551 shared code with SEQUENCEs, which aren't coded the same. This means that
11552 almost everything to do with SETs or SEQUENCEs has either changed name or
11553 number of arguments.
11554 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
11556 *) Fix test data to work with the above.
11559 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
11560 was already fixed by Eric for 0.9.1 it seems.
11561 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
11563 *) Autodetect FreeBSD3.
11566 *) Fix various bugs in Configure. This affects the following platforms:
11570 unixware-2.0-pentium
11574 *) Eliminate generated files from CVS. Reorder tests to regenerate files
11575 before they are needed.
11578 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
11582 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
11584 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
11585 changed SSLeay to OpenSSL in version strings.
11586 [Ralf S. Engelschall]
11588 *) Some fixups to the top-level documents.
11591 *) Fixed the nasty bug where rsaref.h was not found under compile-time
11592 because the symlink to include/ was missing.
11593 [Ralf S. Engelschall]
11595 *) Incorporated the popular no-RSA/DSA-only patches
11596 which allow to compile a RSA-free SSLeay.
11597 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
11599 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
11600 when "ssleay" is still not found.
11601 [Ralf S. Engelschall]
11603 *) Added more platforms to Configure: Cray T3E, HPUX 11,
11604 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
11606 *) Updated the README file.
11607 [Ralf S. Engelschall]
11609 *) Added various .cvsignore files in the CVS repository subdirs
11610 to make a "cvs update" really silent.
11611 [Ralf S. Engelschall]
11613 *) Recompiled the error-definition header files and added
11614 missing symbols to the Win32 linker tables.
11615 [Ralf S. Engelschall]
11617 *) Cleaned up the top-level documents;
11618 o new files: CHANGES and LICENSE
11619 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
11620 o merged COPYRIGHT into LICENSE
11621 o removed obsolete TODO file
11622 o renamed MICROSOFT to INSTALL.W32
11623 [Ralf S. Engelschall]
11625 *) Removed dummy files from the 0.9.1b source tree:
11626 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
11627 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
11628 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
11629 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
11630 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
11631 [Ralf S. Engelschall]
11633 *) Added various platform portability fixes.
11636 *) The Genesis of the OpenSSL rpject:
11637 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
11638 Young and Tim J. Hudson created while they were working for C2Net until
11640 [The OpenSSL Project]
11643 Changes between 0.9.0b and 0.9.1b [not released]
11645 *) Updated a few CA certificates under certs/
11648 *) Changed some BIGNUM api stuff.
11651 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
11652 DGUX x86, Linux Alpha, etc.
11655 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
11656 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
11660 *) Add -strparse option to asn1pars program which parses nested
11662 [Dr Stephen Henson <shenson@bigfoot.com>]
11664 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
11667 *) DSA fix for "ca" program.
11670 *) Added "-genkey" option to "dsaparam" program.
11673 *) Added RIPE MD160 (rmd160) message digest.
11676 *) Added -a (all) option to "ssleay version" command.
11679 *) Added PLATFORM define which is the id given to Configure.
11682 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
11685 *) Extended the ASN.1 parser routines.
11688 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
11691 *) Added a BN_CTX to the BN library.
11694 *) Fixed the weak key values in DES library
11697 *) Changed API in EVP library for cipher aliases.
11700 *) Added support for RC2/64bit cipher.
11703 *) Converted the lhash library to the crypto/mem.c functions.
11706 *) Added more recognized ASN.1 object ids.
11709 *) Added more RSA padding checks for SSL/TLS.
11712 *) Added BIO proxy/filter functionality.
11715 *) Added extra_certs to SSL_CTX which can be used
11716 send extra CA certificates to the client in the CA cert chain sending
11717 process. It can be configured with SSL_CTX_add_extra_chain_cert().
11720 *) Now Fortezza is denied in the authentication phase because
11721 this is key exchange mechanism is not supported by SSLeay at all.
11724 *) Additional PKCS1 checks.
11727 *) Support the string "TLSv1" for all TLS v1 ciphers.
11730 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
11731 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
11734 *) Fixed a few memory leaks.
11737 *) Fixed various code and comment typos.
11740 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
11741 bytes sent in the client random.
11742 [Edward Bishop <ebishop@spyglass.com>]
projects / openssl.git / blob