text: 1 2 OpenSSL CHANGES 3 _______________ 4 5 Changes between 1.0.1s and 1.0.1t [3 May 2016] 6 7 *) Prevent padding oracle in AES-NI CBC MAC check 8 9 A MITM attacker can use a padding oracle attack to decrypt traffic 10 when the connection uses an AES CBC cipher and the server support 11 AES-NI. 12 13 This issue was introduced as part of the fix for Lucky 13 padding 14 attack (CVE-2013-0169). The padding check was rewritten to be in 15 constant time by making sure that always the same bytes are read and 16 compared against either the MAC or padding bytes. But it no longer 17 checked that there was enough data to have both the MAC and padding 18 bytes. 19 20 This issue was reported by Juraj Somorovsky using TLS-Attacker. 21 (CVE-2016-2107) 22 [Kurt Roeckx] 23 24 *) Fix EVP_EncodeUpdate overflow 25 26 An overflow can occur in the EVP_EncodeUpdate() function which is used for 27 Base64 encoding of binary data. If an attacker is able to supply very large 28 amounts of input data then a length check can overflow resulting in a heap 29 corruption. 30 31 Internally to OpenSSL the EVP_EncodeUpdate() function is primarly used by 32 the PEM_write_bio* family of functions. These are mainly used within the 33 OpenSSL command line applications, so any application which processes data 34 from an untrusted source and outputs it as a PEM file should be considered 35 vulnerable to this issue. User applications that call these APIs directly 36 with large amounts of untrusted data may also be vulnerable. 37 38 This issue was reported by Guido Vranken. 39 (CVE-2016-2105) 40 [Matt Caswell] 41 42 *) Fix EVP_EncryptUpdate overflow 43 44 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker 45 is able to supply very large amounts of input data after a previous call to 46 EVP_EncryptUpdate() with a partial block then a length check can overflow 47 resulting in a heap corruption. Following an analysis of all OpenSSL 48 internal usage of the EVP_EncryptUpdate() function all usage is one of two 49 forms. The first form is where the EVP_EncryptUpdate() call is known to be 50 the first called function after an EVP_EncryptInit(), and therefore that 51 specific call must be safe. The second form is where the length passed to 52 EVP_EncryptUpdate() can be seen from the code to be some small value and 53 therefore there is no possibility of an overflow. Since all instances are 54 one of these two forms, it is believed that there can be no overflows in 55 internal code due to this problem. It should be noted that 56 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths. 57 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances 58 of these calls have also been analysed too and it is believed there are no 59 instances in internal usage where an overflow could occur. 60 61 This issue was reported by Guido Vranken. 62 (CVE-2016-2106) 63 [Matt Caswell] 64 65 *) Prevent ASN.1 BIO excessive memory allocation 66 67 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio() 68 a short invalid encoding can casuse allocation of large amounts of memory 69 potentially consuming excessive resources or exhausting memory. 70 71 Any application parsing untrusted data through d2i BIO functions is 72 affected. The memory based functions such as d2i_X509() are *not* affected. 73 Since the memory based functions are used by the TLS library, TLS 74 applications are not affected. 75 76 This issue was reported by Brian Carpenter. 77 (CVE-2016-2109) 78 [Stephen Henson] 79 80 *) EBCDIC overread 81 82 ASN1 Strings that are over 1024 bytes can cause an overread in applications 83 using the X509_NAME_oneline() function on EBCDIC systems. This could result 84 in arbitrary stack data being returned in the buffer. 85 86 This issue was reported by Guido Vranken. 87 (CVE-2016-2176) 88 [Matt Caswell] 89 90 *) Modify behavior of ALPN to invoke callback after SNI/servername 91 callback, such that updates to the SSL_CTX affect ALPN. 92 [Todd Short] 93 94 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the 95 default. 96 [Kurt Roeckx] 97 98 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the 99 methods are enabled and ssl2 is disabled the methods return NULL. 100 [Kurt Roeckx] 101 102 Changes between 1.0.1r and 1.0.1s [1 Mar 2016] 103 104 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL. 105 Builds that are not configured with "enable-weak-ssl-ciphers" will not 106 provide any "EXPORT" or "LOW" strength ciphers. 107 [Viktor Dukhovni] 108 109 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2 110 is by default disabled at build-time. Builds that are not configured with 111 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used, 112 users who want to negotiate SSLv2 via the version-flexible SSLv23_method() 113 will need to explicitly call either of: 114 115 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2); 116 or 117 SSL_clear_options(ssl, SSL_OP_NO_SSLv2); 118 119 as appropriate. Even if either of those is used, or the application 120 explicitly uses the version-specific SSLv2_method() or its client and 121 server variants, SSLv2 ciphers vulnerable to exhaustive search key 122 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT 123 ciphers, and SSLv2 56-bit DES are no longer available. 124 (CVE-2016-0800) 125 [Viktor Dukhovni] 126 127 *) Fix a double-free in DSA code 128 129 A double free bug was discovered when OpenSSL parses malformed DSA private 130 keys and could lead to a DoS attack or memory corruption for applications 131 that receive DSA private keys from untrusted sources. This scenario is 132 considered rare. 133 134 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using 135 libFuzzer. 136 (CVE-2016-0705) 137 [Stephen Henson] 138 139 *) Disable SRP fake user seed to address a server memory leak. 140 141 Add a new method SRP_VBASE_get1_by_user that handles the seed properly. 142 143 SRP_VBASE_get_by_user had inconsistent memory management behaviour. 144 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user 145 was changed to ignore the "fake user" SRP seed, even if the seed 146 is configured. 147 148 Users should use SRP_VBASE_get1_by_user instead. Note that in 149 SRP_VBASE_get1_by_user, caller must free the returned value. Note 150 also that even though configuring the SRP seed attempts to hide 151 invalid usernames by continuing the handshake with fake 152 credentials, this behaviour is not constant time and no strong 153 guarantees are made that the handshake is indistinguishable from 154 that of a valid user. 155 (CVE-2016-0798) 156 [Emilia Ksper] 157 158 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption 159 160 In the BN_hex2bn function the number of hex digits is calculated using an 161 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For 162 large values of |i| this can result in |bn_expand| not allocating any 163 memory because |i * 4| is negative. This can leave the internal BIGNUM data 164 field as NULL leading to a subsequent NULL ptr deref. For very large values 165 of |i|, the calculation |i * 4| could be a positive value smaller than |i|. 166 In this case memory is allocated to the internal BIGNUM data field, but it 167 is insufficiently sized leading to heap corruption. A similar issue exists 168 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn 169 is ever called by user applications with very large untrusted hex/dec data. 170 This is anticipated to be a rare occurrence. 171 172 All OpenSSL internal usage of these functions use data that is not expected 173 to be untrusted, e.g. config file data or application command line 174 arguments. If user developed applications generate config file data based 175 on untrusted data then it is possible that this could also lead to security 176 consequences. This is also anticipated to be rare. 177 178 This issue was reported to OpenSSL by Guido Vranken. 179 (CVE-2016-0797) 180 [Matt Caswell] 181 182 *) Fix memory issues in BIO_*printf functions 183 184 The internal |fmtstr| function used in processing a "%s" format string in 185 the BIO_*printf functions could overflow while calculating the length of a 186 string and cause an OOB read when printing very long strings. 187 188 Additionally the internal |doapr_outch| function can attempt to write to an 189 OOB memory location (at an offset from the NULL pointer) in the event of a 190 memory allocation failure. In 1.0.2 and below this could be caused where 191 the size of a buffer to be allocated is greater than INT_MAX. E.g. this 192 could be in processing a very long "%s" format string. Memory leaks can 193 also occur. 194 195 The first issue may mask the second issue dependent on compiler behaviour. 196 These problems could enable attacks where large amounts of untrusted data 197 is passed to the BIO_*printf functions. If applications use these functions 198 in this way then they could be vulnerable. OpenSSL itself uses these 199 functions when printing out human-readable dumps of ASN.1 data. Therefore 200 applications that print this data could be vulnerable if the data is from 201 untrusted sources. OpenSSL command line applications could also be 202 vulnerable where they print out ASN.1 data, or if untrusted data is passed 203 as command line arguments. 204 205 Libssl is not considered directly vulnerable. Additionally certificates etc 206 received via remote connections via libssl are also unlikely to be able to 207 trigger these issues because of message size limits enforced within libssl. 208 209 This issue was reported to OpenSSL Guido Vranken. 210 (CVE-2016-0799) 211 [Matt Caswell] 212 213 *) Side channel attack on modular exponentiation 214 215 A side-channel attack was found which makes use of cache-bank conflicts on 216 the Intel Sandy-Bridge microarchitecture which could lead to the recovery 217 of RSA keys. The ability to exploit this issue is limited as it relies on 218 an attacker who has control of code in a thread running on the same 219 hyper-threaded core as the victim thread which is performing decryptions. 220 221 This issue was reported to OpenSSL by Yuval Yarom, The University of 222 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and 223 Nadia Heninger, University of Pennsylvania with more information at 224 http://cachebleed.info. 225 (CVE-2016-0702) 226 [Andy Polyakov] 227 228 *) Change the req app to generate a 2048-bit RSA/DSA key by default, 229 if no keysize is specified with default_bits. This fixes an 230 omission in an earlier change that changed all RSA/DSA key generation 231 apps to use 2048 bits by default. 232 [Emilia Ksper] 233 234 Changes between 1.0.1q and 1.0.1r [28 Jan 2016] 235 236 *) Protection for DH small subgroup attacks 237 238 As a precautionary measure the SSL_OP_SINGLE_DH_USE option has been 239 switched on by default and cannot be disabled. This could have some 240 performance impact. 241 [Matt Caswell] 242 243 *) SSLv2 doesn't block disabled ciphers 244 245 A malicious client can negotiate SSLv2 ciphers that have been disabled on 246 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have 247 been disabled, provided that the SSLv2 protocol was not also disabled via 248 SSL_OP_NO_SSLv2. 249 250 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram 251 and Sebastian Schinzel. 252 (CVE-2015-3197) 253 [Viktor Dukhovni] 254 255 *) Reject DH handshakes with parameters shorter than 1024 bits. 256 [Kurt Roeckx] 257 258 Changes between 1.0.1p and 1.0.1q [3 Dec 2015] 259 260 *) Certificate verify crash with missing PSS parameter 261 262 The signature verification routines will crash with a NULL pointer 263 dereference if presented with an ASN.1 signature using the RSA PSS 264 algorithm and absent mask generation function parameter. Since these 265 routines are used to verify certificate signature algorithms this can be 266 used to crash any certificate verification operation and exploited in a 267 DoS attack. Any application which performs certificate verification is 268 vulnerable including OpenSSL clients and servers which enable client 269 authentication. 270 271 This issue was reported to OpenSSL by Loc Jonas Etienne (Qnective AG). 272 (CVE-2015-3194) 273 [Stephen Henson] 274 275 *) X509_ATTRIBUTE memory leak 276 277 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak 278 memory. This structure is used by the PKCS#7 and CMS routines so any 279 application which reads PKCS#7 or CMS data from untrusted sources is 280 affected. SSL/TLS is not affected. 281 282 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using 283 libFuzzer. 284 (CVE-2015-3195) 285 [Stephen Henson] 286 287 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs. 288 This changes the decoding behaviour for some invalid messages, 289 though the change is mostly in the more lenient direction, and 290 legacy behaviour is preserved as much as possible. 291 [Emilia Ksper] 292 293 *) In DSA_generate_parameters_ex, if the provided seed is too short, 294 use a random seed, as already documented. 295 [Rich Salz and Ismo Puustinen <ismo.puustinen (a] intel.com>] 296 297 Changes between 1.0.1o and 1.0.1p [9 Jul 2015] 298 299 *) Alternate chains certificate forgery 300 301 During certificate verfification, OpenSSL will attempt to find an 302 alternative certificate chain if the first attempt to build such a chain 303 fails. An error in the implementation of this logic can mean that an 304 attacker could cause certain checks on untrusted certificates to be 305 bypassed, such as the CA flag, enabling them to use a valid leaf 306 certificate to act as a CA and "issue" an invalid certificate. 307 308 This issue was reported to OpenSSL by Adam Langley/David Benjamin 309 (Google/BoringSSL). 310 (CVE-2015-1793) 311 [Matt Caswell] 312 313 *) Race condition handling PSK identify hint 314 315 If PSK identity hints are received by a multi-threaded client then 316 the values are wrongly updated in the parent SSL_CTX structure. This can 317 result in a race condition potentially leading to a double free of the 318 identify hint data. 319 (CVE-2015-3196) 320 [Stephen Henson] 321 322 Changes between 1.0.1n and 1.0.1o [12 Jun 2015] 323 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI 324 incompatibility in the handling of HMAC. The previous ABI has now been 325 restored. 326 327 Changes between 1.0.1m and 1.0.1n [11 Jun 2015] 328 329 *) Malformed ECParameters causes infinite loop 330 331 When processing an ECParameters structure OpenSSL enters an infinite loop 332 if the curve specified is over a specially malformed binary polynomial 333 field. 334 335 This can be used to perform denial of service against any 336 system which processes public keys, certificate requests or 337 certificates. This includes TLS clients and TLS servers with 338 client authentication enabled. 339 340 This issue was reported to OpenSSL by Joseph Barr-Pixton. 341 (CVE-2015-1788) 342 [Andy Polyakov] 343 344 *) Exploitable out-of-bounds read in X509_cmp_time 345 346 X509_cmp_time does not properly check the length of the ASN1_TIME 347 string and can read a few bytes out of bounds. In addition, 348 X509_cmp_time accepts an arbitrary number of fractional seconds in the 349 time string. 350 351 An attacker can use this to craft malformed certificates and CRLs of 352 various sizes and potentially cause a segmentation fault, resulting in 353 a DoS on applications that verify certificates or CRLs. TLS clients 354 that verify CRLs are affected. TLS clients and servers with client 355 authentication enabled may be affected if they use custom verification 356 callbacks. 357 358 This issue was reported to OpenSSL by Robert Swiecki (Google), and 359 independently by Hanno Bck. 360 (CVE-2015-1789) 361 [Emilia Ksper] 362 363 *) PKCS7 crash with missing EnvelopedContent 364 365 The PKCS#7 parsing code does not handle missing inner EncryptedContent 366 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs 367 with missing content and trigger a NULL pointer dereference on parsing. 368 369 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7 370 structures from untrusted sources are affected. OpenSSL clients and 371 servers are not affected. 372 373 This issue was reported to OpenSSL by Michal Zalewski (Google). 374 (CVE-2015-1790) 375 [Emilia Ksper] 376 377 *) CMS verify infinite loop with unknown hash function 378 379 When verifying a signedData message the CMS code can enter an infinite loop 380 if presented with an unknown hash function OID. This can be used to perform 381 denial of service against any system which verifies signedData messages using 382 the CMS code. 383 This issue was reported to OpenSSL by Johannes Bauer. 384 (CVE-2015-1792) 385 [Stephen Henson] 386 387 *) Race condition handling NewSessionTicket 388 389 If a NewSessionTicket is received by a multi-threaded client when attempting to 390 reuse a previous ticket then a race condition can occur potentially leading to 391 a double free of the ticket data. 392 (CVE-2015-1791) 393 [Matt Caswell] 394 395 *) Reject DH handshakes with parameters shorter than 768 bits. 396 [Kurt Roeckx and Emilia Kasper] 397 398 *) dhparam: generate 2048-bit parameters by default. 399 [Kurt Roeckx and Emilia Kasper] 400 401 Changes between 1.0.1l and 1.0.1m [19 Mar 2015] 402 403 *) Segmentation fault in ASN1_TYPE_cmp fix 404 405 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is 406 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check 407 certificate signature algorithm consistency this can be used to crash any 408 certificate verification operation and exploited in a DoS attack. Any 409 application which performs certificate verification is vulnerable including 410 OpenSSL clients and servers which enable client authentication. 411 (CVE-2015-0286) 412 [Stephen Henson] 413 414 *) ASN.1 structure reuse memory corruption fix 415 416 Reusing a structure in ASN.1 parsing may allow an attacker to cause 417 memory corruption via an invalid write. Such reuse is and has been 418 strongly discouraged and is believed to be rare. 419 420 Applications that parse structures containing CHOICE or ANY DEFINED BY 421 components may be affected. Certificate parsing (d2i_X509 and related 422 functions) are however not affected. OpenSSL clients and servers are 423 not affected. 424 (CVE-2015-0287) 425 [Stephen Henson] 426 427 *) PKCS7 NULL pointer dereferences fix 428 429 The PKCS#7 parsing code does not handle missing outer ContentInfo 430 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with 431 missing content and trigger a NULL pointer dereference on parsing. 432 433 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or 434 otherwise parse PKCS#7 structures from untrusted sources are 435 affected. OpenSSL clients and servers are not affected. 436 437 This issue was reported to OpenSSL by Michal Zalewski (Google). 438 (CVE-2015-0289) 439 [Emilia Ksper] 440 441 *) DoS via reachable assert in SSLv2 servers fix 442 443 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in 444 servers that both support SSLv2 and enable export cipher suites by sending 445 a specially crafted SSLv2 CLIENT-MASTER-KEY message. 446 447 This issue was discovered by Sean Burford (Google) and Emilia Ksper 448 (OpenSSL development team). 449 (CVE-2015-0293) 450 [Emilia Ksper] 451 452 *) Use After Free following d2i_ECPrivatekey error fix 453 454 A malformed EC private key file consumed via the d2i_ECPrivateKey function 455 could cause a use after free condition. This, in turn, could cause a double 456 free in several private key parsing functions (such as d2i_PrivateKey 457 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption 458 for applications that receive EC private keys from untrusted 459 sources. This scenario is considered rare. 460 461 This issue was discovered by the BoringSSL project and fixed in their 462 commit 517073cd4b. 463 (CVE-2015-0209) 464 [Matt Caswell] 465 466 *) X509_to_X509_REQ NULL pointer deref fix 467 468 The function X509_to_X509_REQ will crash with a NULL pointer dereference if 469 the certificate key is invalid. This function is rarely used in practice. 470 471 This issue was discovered by Brian Carpenter. 472 (CVE-2015-0288) 473 [Stephen Henson] 474 475 *) Removed the export ciphers from the DEFAULT ciphers 476 [Kurt Roeckx] 477 478 Changes between 1.0.1k and 1.0.1l [15 Jan 2015] 479 480 *) Build fixes for the Windows and OpenVMS platforms 481 [Matt Caswell and Richard Levitte] 482 483 Changes between 1.0.1j and 1.0.1k [8 Jan 2015] 484 485 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS 486 message can cause a segmentation fault in OpenSSL due to a NULL pointer 487 dereference. This could lead to a Denial Of Service attack. Thanks to 488 Markus Stenberg of Cisco Systems, Inc. for reporting this issue. 489 (CVE-2014-3571) 490 [Steve Henson] 491 492 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the 493 dtls1_buffer_record function under certain conditions. In particular this 494 could occur if an attacker sent repeated DTLS records with the same 495 sequence number but for the next epoch. The memory leak could be exploited 496 by an attacker in a Denial of Service attack through memory exhaustion. 497 Thanks to Chris Mueller for reporting this issue. 498 (CVE-2015-0206) 499 [Matt Caswell] 500 501 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is 502 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl 503 method would be set to NULL which could later result in a NULL pointer 504 dereference. Thanks to Frank Schmirler for reporting this issue. 505 (CVE-2014-3569) 506 [Kurt Roeckx] 507 508 *) Abort handshake if server key exchange message is omitted for ephemeral 509 ECDH ciphersuites. 510 511 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for 512 reporting this issue. 513 (CVE-2014-3572) 514 [Steve Henson] 515 516 *) Remove non-export ephemeral RSA code on client and server. This code 517 violated the TLS standard by allowing the use of temporary RSA keys in 518 non-export ciphersuites and could be used by a server to effectively 519 downgrade the RSA key length used to a value smaller than the server 520 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at 521 INRIA or reporting this issue. 522 (CVE-2015-0204) 523 [Steve Henson] 524 525 *) Fixed issue where DH client certificates are accepted without verification. 526 An OpenSSL server will accept a DH certificate for client authentication 527 without the certificate verify message. This effectively allows a client to 528 authenticate without the use of a private key. This only affects servers 529 which trust a client certificate authority which issues certificates 530 containing DH keys: these are extremely rare and hardly ever encountered. 531 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting 532 this issue. 533 (CVE-2015-0205) 534 [Steve Henson] 535 536 *) Ensure that the session ID context of an SSL is updated when its 537 SSL_CTX is updated via SSL_set_SSL_CTX. 538 539 The session ID context is typically set from the parent SSL_CTX, 540 and can vary with the CTX. 541 [Adam Langley] 542 543 *) Fix various certificate fingerprint issues. 544 545 By using non-DER or invalid encodings outside the signed portion of a 546 certificate the fingerprint can be changed without breaking the signature. 547 Although no details of the signed portion of the certificate can be changed 548 this can cause problems with some applications: e.g. those using the 549 certificate fingerprint for blacklists. 550 551 1. Reject signatures with non zero unused bits. 552 553 If the BIT STRING containing the signature has non zero unused bits reject 554 the signature. All current signature algorithms require zero unused bits. 555 556 2. Check certificate algorithm consistency. 557 558 Check the AlgorithmIdentifier inside TBS matches the one in the 559 certificate signature. NB: this will result in signature failure 560 errors for some broken certificates. 561 562 Thanks to Konrad Kraszewski from Google for reporting this issue. 563 564 3. Check DSA/ECDSA signatures use DER. 565 566 Reencode DSA/ECDSA signatures and compare with the original received 567 signature. Return an error if there is a mismatch. 568 569 This will reject various cases including garbage after signature 570 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS 571 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs 572 (negative or with leading zeroes). 573 574 Further analysis was conducted and fixes were developed by Stephen Henson 575 of the OpenSSL core team. 576 577 (CVE-2014-8275) 578 [Steve Henson] 579 580 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect 581 results on some platforms, including x86_64. This bug occurs at random 582 with a very low probability, and is not known to be exploitable in any 583 way, though its exact impact is difficult to determine. Thanks to Pieter 584 Wuille (Blockstream) who reported this issue and also suggested an initial 585 fix. Further analysis was conducted by the OpenSSL development team and 586 Adam Langley of Google. The final fix was developed by Andy Polyakov of 587 the OpenSSL core team. 588 (CVE-2014-3570) 589 [Andy Polyakov] 590 591 *) Do not resume sessions on the server if the negotiated protocol 592 version does not match the session's version. Resuming with a different 593 version, while not strictly forbidden by the RFC, is of questionable 594 sanity and breaks all known clients. 595 [David Benjamin, Emilia Ksper] 596 597 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject 598 early CCS messages during renegotiation. (Note that because 599 renegotiation is encrypted, this early CCS was not exploitable.) 600 [Emilia Ksper] 601 602 *) Tighten client-side session ticket handling during renegotiation: 603 ensure that the client only accepts a session ticket if the server sends 604 the extension anew in the ServerHello. Previously, a TLS client would 605 reuse the old extension state and thus accept a session ticket if one was 606 announced in the initial ServerHello. 607 608 Similarly, ensure that the client requires a session ticket if one 609 was advertised in the ServerHello. Previously, a TLS client would 610 ignore a missing NewSessionTicket message. 611 [Emilia Ksper] 612 613 Changes between 1.0.1i and 1.0.1j [15 Oct 2014] 614 615 *) SRTP Memory Leak. 616 617 A flaw in the DTLS SRTP extension parsing code allows an attacker, who 618 sends a carefully crafted handshake message, to cause OpenSSL to fail 619 to free up to 64k of memory causing a memory leak. This could be 620 exploited in a Denial Of Service attack. This issue affects OpenSSL 621 1.0.1 server implementations for both SSL/TLS and DTLS regardless of 622 whether SRTP is used or configured. Implementations of OpenSSL that 623 have been compiled with OPENSSL_NO_SRTP defined are not affected. 624 625 The fix was developed by the OpenSSL team. 626 (CVE-2014-3513) 627 [OpenSSL team] 628 629 *) Session Ticket Memory Leak. 630 631 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the 632 integrity of that ticket is first verified. In the event of a session 633 ticket integrity check failing, OpenSSL will fail to free memory 634 causing a memory leak. By sending a large number of invalid session 635 tickets an attacker could exploit this issue in a Denial Of Service 636 attack. 637 (CVE-2014-3567) 638 [Steve Henson] 639 640 *) Build option no-ssl3 is incomplete. 641 642 When OpenSSL is configured with "no-ssl3" as a build option, servers 643 could accept and complete a SSL 3.0 handshake, and clients could be 644 configured to send them. 645 (CVE-2014-3568) 646 [Akamai and the OpenSSL team] 647 648 *) Add support for TLS_FALLBACK_SCSV. 649 Client applications doing fallback retries should call 650 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV). 651 (CVE-2014-3566) 652 [Adam Langley, Bodo Moeller] 653 654 *) Add additional DigestInfo checks. 655 656 Reencode DigestInto in DER and check against the original when 657 verifying RSA signature: this will reject any improperly encoded 658 DigestInfo structures. 659 660 Note: this is a precautionary measure and no attacks are currently known. 661 662 [Steve Henson] 663 664 Changes between 1.0.1h and 1.0.1i [6 Aug 2014] 665 666 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the 667 SRP code can be overrun an internal buffer. Add sanity check that 668 g, A, B < N to SRP code. 669 670 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC 671 Group for discovering this issue. 672 (CVE-2014-3512) 673 [Steve Henson] 674 675 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate 676 TLS 1.0 instead of higher protocol versions when the ClientHello message 677 is badly fragmented. This allows a man-in-the-middle attacker to force a 678 downgrade to TLS 1.0 even if both the server and the client support a 679 higher protocol version, by modifying the client's TLS records. 680 681 Thanks to David Benjamin and Adam Langley (Google) for discovering and 682 researching this issue. 683 (CVE-2014-3511) 684 [David Benjamin] 685 686 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject 687 to a denial of service attack. A malicious server can crash the client 688 with a null pointer dereference (read) by specifying an anonymous (EC)DH 689 ciphersuite and sending carefully crafted handshake messages. 690 691 Thanks to Felix Grbert (Google) for discovering and researching this 692 issue. 693 (CVE-2014-3510) 694 [Emilia Ksper] 695 696 *) By sending carefully crafted DTLS packets an attacker could cause openssl 697 to leak memory. This can be exploited through a Denial of Service attack. 698 Thanks to Adam Langley for discovering and researching this issue. 699 (CVE-2014-3507) 700 [Adam Langley] 701 702 *) An attacker can force openssl to consume large amounts of memory whilst 703 processing DTLS handshake messages. This can be exploited through a 704 Denial of Service attack. 705 Thanks to Adam Langley for discovering and researching this issue. 706 (CVE-2014-3506) 707 [Adam Langley] 708 709 *) An attacker can force an error condition which causes openssl to crash 710 whilst processing DTLS packets due to memory being freed twice. This 711 can be exploited through a Denial of Service attack. 712 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching 713 this issue. 714 (CVE-2014-3505) 715 [Adam Langley] 716 717 *) If a multithreaded client connects to a malicious server using a resumed 718 session and the server sends an ec point format extension it could write 719 up to 255 bytes to freed memory. 720 721 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this 722 issue. 723 (CVE-2014-3509) 724 [Gabor Tyukasz] 725 726 *) A malicious server can crash an OpenSSL client with a null pointer 727 dereference (read) by specifying an SRP ciphersuite even though it was not 728 properly negotiated with the client. This can be exploited through a 729 Denial of Service attack. 730 731 Thanks to Joonas Kuorilehto and Riku Hietamki (Codenomicon) for 732 discovering and researching this issue. 733 (CVE-2014-5139) 734 [Steve Henson] 735 736 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as 737 X509_name_oneline, X509_name_print_ex et al. to leak some information 738 from the stack. Applications may be affected if they echo pretty printing 739 output to the attacker. 740 741 Thanks to Ivan Fratric (Google) for discovering this issue. 742 (CVE-2014-3508) 743 [Emilia Ksper, and Steve Henson] 744 745 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.) 746 for corner cases. (Certain input points at infinity could lead to 747 bogus results, with non-infinity inputs mapped to infinity too.) 748 [Bodo Moeller] 749 750 Changes between 1.0.1g and 1.0.1h [5 Jun 2014] 751 752 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted 753 handshake can force the use of weak keying material in OpenSSL 754 SSL/TLS clients and servers. 755 756 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and 757 researching this issue. (CVE-2014-0224) 758 [KIKUCHI Masashi, Steve Henson] 759 760 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an 761 OpenSSL DTLS client the code can be made to recurse eventually crashing 762 in a DoS attack. 763 764 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue. 765 (CVE-2014-0221) 766 [Imre Rad, Steve Henson] 767 768 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can 769 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS 770 client or server. This is potentially exploitable to run arbitrary 771 code on a vulnerable client or server. 772 773 Thanks to Jri Aedla for reporting this issue. (CVE-2014-0195) 774 [Jri Aedla, Steve Henson] 775 776 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites 777 are subject to a denial of service attack. 778 779 Thanks to Felix Grbert and Ivan Fratric at Google for discovering 780 this issue. (CVE-2014-3470) 781 [Felix Grbert, Ivan Fratric, Steve Henson] 782 783 *) Harmonize version and its documentation. -f flag is used to display 784 compilation flags. 785 [mancha <mancha1 (a] zoho.com>] 786 787 *) Fix eckey_priv_encode so it immediately returns an error upon a failure 788 in i2d_ECPrivateKey. 789 [mancha <mancha1 (a] zoho.com>] 790 791 *) Fix some double frees. These are not thought to be exploitable. 792 [mancha <mancha1 (a] zoho.com>] 793 794 Changes between 1.0.1f and 1.0.1g [7 Apr 2014] 795 796 *) A missing bounds check in the handling of the TLS heartbeat extension 797 can be used to reveal up to 64k of memory to a connected client or 798 server. 799 800 Thanks for Neel Mehta of Google Security for discovering this bug and to 801 Adam Langley <agl (a] chromium.org> and Bodo Moeller <bmoeller (a] acm.org> for 802 preparing the fix (CVE-2014-0160) 803 [Adam Langley, Bodo Moeller] 804 805 *) Fix for the attack described in the paper "Recovering OpenSSL 806 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack" 807 by Yuval Yarom and Naomi Benger. Details can be obtained from: 808 http://eprint.iacr.org/2014/140 809 810 Thanks to Yuval Yarom and Naomi Benger for discovering this 811 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076) 812 [Yuval Yarom and Naomi Benger] 813 814 *) TLS pad extension: draft-agl-tls-padding-03 815 816 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the 817 TLS client Hello record length value would otherwise be > 255 and 818 less that 512 pad with a dummy extension containing zeroes so it 819 is at least 512 bytes long. 820 821 [Adam Langley, Steve Henson] 822 823 Changes between 1.0.1e and 1.0.1f [6 Jan 2014] 824 825 *) Fix for TLS record tampering bug. A carefully crafted invalid 826 handshake could crash OpenSSL with a NULL pointer exception. 827 Thanks to Anton Johansson for reporting this issues. 828 (CVE-2013-4353) 829 830 *) Keep original DTLS digest and encryption contexts in retransmission 831 structures so we can use the previous session parameters if they need 832 to be resent. (CVE-2013-6450) 833 [Steve Henson] 834 835 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which 836 avoids preferring ECDHE-ECDSA ciphers when the client appears to be 837 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for 838 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug 839 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing 840 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer. 841 [Rob Stradling, Adam Langley] 842 843 Changes between 1.0.1d and 1.0.1e [11 Feb 2013] 844 845 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI 846 supporting platforms or when small records were transferred. 847 [Andy Polyakov, Steve Henson] 848 849 Changes between 1.0.1c and 1.0.1d [5 Feb 2013] 850 851 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time. 852 853 This addresses the flaw in CBC record processing discovered by 854 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found 855 at: http://www.isg.rhul.ac.uk/tls/ 856 857 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information 858 Security Group at Royal Holloway, University of London 859 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and 860 Emilia Ksper for the initial patch. 861 (CVE-2013-0169) 862 [Emilia Ksper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson] 863 864 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode 865 ciphersuites which can be exploited in a denial of service attack. 866 Thanks go to and to Adam Langley <agl (a] chromium.org> for discovering 867 and detecting this bug and to Wolfgang Ettlinger 868 <wolfgang.ettlinger (a] gmail.com> for independently discovering this issue. 869 (CVE-2012-2686) 870 [Adam Langley] 871 872 *) Return an error when checking OCSP signatures when key is NULL. 873 This fixes a DoS attack. (CVE-2013-0166) 874 [Steve Henson] 875 876 *) Make openssl verify return errors. 877 [Chris Palmer <palmer (a] google.com> and Ben Laurie] 878 879 *) Call OCSP Stapling callback after ciphersuite has been chosen, so 880 the right response is stapled. Also change SSL_get_certificate() 881 so it returns the certificate actually sent. 882 See http://rt.openssl.org/Ticket/Display.html?id=2836. 883 [Rob Stradling <rob.stradling (a] comodo.com>] 884 885 *) Fix possible deadlock when decoding public keys. 886 [Steve Henson] 887 888 *) Don't use TLS 1.0 record version number in initial client hello 889 if renegotiating. 890 [Steve Henson] 891 892 Changes between 1.0.1b and 1.0.1c [10 May 2012] 893 894 *) Sanity check record length before skipping explicit IV in TLS 895 1.2, 1.1 and DTLS to fix DoS attack. 896 897 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic 898 fuzzing as a service testing platform. 899 (CVE-2012-2333) 900 [Steve Henson] 901 902 *) Initialise tkeylen properly when encrypting CMS messages. 903 Thanks to Solar Designer of Openwall for reporting this issue. 904 [Steve Henson] 905 906 *) In FIPS mode don't try to use composite ciphers as they are not 907 approved. 908 [Steve Henson] 909 910 Changes between 1.0.1a and 1.0.1b [26 Apr 2012] 911 912 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and 913 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately 914 mean any application compiled against OpenSSL 1.0.0 headers setting 915 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng 916 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to 917 0x10000000L Any application which was previously compiled against 918 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1 919 will need to be recompiled as a result. Letting be results in 920 inability to disable specifically TLS 1.1 and in client context, 921 in unlike event, limit maximum offered version to TLS 1.0 [see below]. 922 [Steve Henson] 923 924 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not 925 disable just protocol X, but all protocols above X *if* there are 926 protocols *below* X still enabled. In more practical terms it means 927 that if application wants to disable TLS1.0 in favor of TLS1.1 and 928 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass 929 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to 930 client side. 931 [Andy Polyakov] 932 933 Changes between 1.0.1 and 1.0.1a [19 Apr 2012] 934 935 *) Check for potentially exploitable overflows in asn1_d2i_read_bio 936 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer 937 in CRYPTO_realloc_clean. 938 939 Thanks to Tavis Ormandy, Google Security Team, for discovering this 940 issue and to Adam Langley <agl (a] chromium.org> for fixing it. 941 (CVE-2012-2110) 942 [Adam Langley (Google), Tavis Ormandy, Google Security Team] 943 944 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections. 945 [Adam Langley] 946 947 *) Workarounds for some broken servers that "hang" if a client hello 948 record length exceeds 255 bytes. 949 950 1. Do not use record version number > TLS 1.0 in initial client 951 hello: some (but not all) hanging servers will now work. 952 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate 953 the number of ciphers sent in the client hello. This should be 954 set to an even number, such as 50, for example by passing: 955 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure. 956 Most broken servers should now work. 957 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable 958 TLS 1.2 client support entirely. 959 [Steve Henson] 960 961 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH. 962 [Andy Polyakov] 963 964 Changes between 1.0.0h and 1.0.1 [14 Mar 2012] 965 966 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET 967 STRING form instead of a DigestInfo. 968 [Steve Henson] 969 970 *) The format used for MDC2 RSA signatures is inconsistent between EVP 971 and the RSA_sign/RSA_verify functions. This was made more apparent when 972 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular 973 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect 974 the correct format in RSA_verify so both forms transparently work. 975 [Steve Henson] 976 977 *) Some servers which support TLS 1.0 can choke if we initially indicate 978 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA 979 encrypted premaster secret. As a workaround use the maximum pemitted 980 client version in client hello, this should keep such servers happy 981 and still work with previous versions of OpenSSL. 982 [Steve Henson] 983 984 *) Add support for TLS/DTLS heartbeats. 985 [Robin Seggelmann <seggelmann (a] fh-muenster.de>] 986 987 *) Add support for SCTP. 988 [Robin Seggelmann <seggelmann (a] fh-muenster.de>] 989 990 *) Improved PRNG seeding for VOS. 991 [Paul Green <Paul.Green (a] stratus.com>] 992 993 *) Extensive assembler packs updates, most notably: 994 995 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support; 996 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES); 997 - x86_64: bit-sliced AES implementation; 998 - ARM: NEON support, contemporary platforms optimizations; 999 - s390x: z196 support; 1000 - *: GHASH and GF(2^m) multiplication implementations; 1001 1002 [Andy Polyakov] 1003 1004 *) Make TLS-SRP code conformant with RFC 5054 API cleanup 1005 (removal of unnecessary code) 1006 [Peter Sylvester <peter.sylvester (a] edelweb.fr>] 1007 1008 *) Add TLS key material exporter from RFC 5705. 1009 [Eric Rescorla] 1010 1011 *) Add DTLS-SRTP negotiation from RFC 5764. 1012 [Eric Rescorla] 1013 1014 *) Add Next Protocol Negotiation, 1015 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be 1016 disabled with a no-npn flag to config or Configure. Code donated 1017 by Google. 1018 [Adam Langley <agl (a] google.com> and Ben Laurie] 1019 1020 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224, 1021 NIST-P256, NIST-P521, with constant-time single point multiplication on 1022 typical inputs. Compiler support for the nonstandard type __uint128_t is 1023 required to use this (present in gcc 4.4 and later, for 64-bit builds). 1024 Code made available under Apache License version 2.0. 1025 1026 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command 1027 line to include this in your build of OpenSSL, and run "make depend" (or 1028 "make update"). This enables the following EC_METHODs: 1029 1030 EC_GFp_nistp224_method() 1031 EC_GFp_nistp256_method() 1032 EC_GFp_nistp521_method() 1033 1034 EC_GROUP_new_by_curve_name() will automatically use these (while 1035 EC_GROUP_new_curve_GFp() currently prefers the more flexible 1036 implementations). 1037 [Emilia Ksper, Adam Langley, Bodo Moeller (Google)] 1038 1039 *) Use type ossl_ssize_t instad of ssize_t which isn't available on 1040 all platforms. Move ssize_t definition from e_os.h to the public 1041 header file e_os2.h as it now appears in public header file cms.h 1042 [Steve Henson] 1043 1044 *) New -sigopt option to the ca, req and x509 utilities. Additional 1045 signature parameters can be passed using this option and in 1046 particular PSS. 1047 [Steve Henson] 1048 1049 *) Add RSA PSS signing function. This will generate and set the 1050 appropriate AlgorithmIdentifiers for PSS based on those in the 1051 corresponding EVP_MD_CTX structure. No application support yet. 1052 [Steve Henson] 1053 1054 *) Support for companion algorithm specific ASN1 signing routines. 1055 New function ASN1_item_sign_ctx() signs a pre-initialised 1056 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on 1057 the appropriate parameters. 1058 [Steve Henson] 1059 1060 *) Add new algorithm specific ASN1 verification initialisation function 1061 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1 1062 handling will be the same no matter what EVP_PKEY_METHOD is used. 1063 Add a PSS handler to support verification of PSS signatures: checked 1064 against a number of sample certificates. 1065 [Steve Henson] 1066 1067 *) Add signature printing for PSS. Add PSS OIDs. 1068 [Steve Henson, Martin Kaiser <lists (a] kaiser.cx>] 1069 1070 *) Add algorithm specific signature printing. An individual ASN1 method 1071 can now print out signatures instead of the standard hex dump. 1072 1073 More complex signatures (e.g. PSS) can print out more meaningful 1074 information. Include DSA version that prints out the signature 1075 parameters r, s. 1076 [Steve Henson] 1077 1078 *) Password based recipient info support for CMS library: implementing 1079 RFC3211. 1080 [Steve Henson] 1081 1082 *) Split password based encryption into PBES2 and PBKDF2 functions. This 1083 neatly separates the code into cipher and PBE sections and is required 1084 for some algorithms that split PBES2 into separate pieces (such as 1085 password based CMS). 1086 [Steve Henson] 1087 1088 *) Session-handling fixes: 1089 - Fix handling of connections that are resuming with a session ID, 1090 but also support Session Tickets. 1091 - Fix a bug that suppressed issuing of a new ticket if the client 1092 presented a ticket with an expired session. 1093 - Try to set the ticket lifetime hint to something reasonable. 1094 - Make tickets shorter by excluding irrelevant information. 1095 - On the client side, don't ignore renewed tickets. 1096 [Adam Langley, Bodo Moeller (Google)] 1097 1098 *) Fix PSK session representation. 1099 [Bodo Moeller] 1100 1101 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations. 1102 1103 This work was sponsored by Intel. 1104 [Andy Polyakov] 1105 1106 *) Add GCM support to TLS library. Some custom code is needed to split 1107 the IV between the fixed (from PRF) and explicit (from TLS record) 1108 portions. This adds all GCM ciphersuites supported by RFC5288 and 1109 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and 1110 add a special AESGCM string for GCM only. 1111 [Steve Henson] 1112 1113 *) Expand range of ctrls for AES GCM. Permit setting invocation 1114 field on decrypt and retrieval of invocation field only on encrypt. 1115 [Steve Henson] 1116 1117 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support. 1118 As required by RFC5289 these ciphersuites cannot be used if for 1119 versions of TLS earlier than 1.2. 1120 [Steve Henson] 1121 1122 *) For FIPS capable OpenSSL interpret a NULL default public key method 1123 as unset and return the appopriate default but do *not* set the default. 1124 This means we can return the appopriate method in applications that 1125 swicth between FIPS and non-FIPS modes. 1126 [Steve Henson] 1127 1128 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an 1129 ENGINE is used then we cannot handle that in the FIPS module so we 1130 keep original code iff non-FIPS operations are allowed. 1131 [Steve Henson] 1132 1133 *) Add -attime option to openssl utilities. 1134 [Peter Eckersley <pde (a] eff.org>, Ben Laurie and Steve Henson] 1135 1136 *) Redirect DSA and DH operations to FIPS module in FIPS mode. 1137 [Steve Henson] 1138 1139 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use 1140 FIPS EC methods unconditionally for now. 1141 [Steve Henson] 1142 1143 *) New build option no-ec2m to disable characteristic 2 code. 1144 [Steve Henson] 1145 1146 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not 1147 all cases can be covered as some introduce binary incompatibilities. 1148 [Steve Henson] 1149 1150 *) Redirect RSA operations to FIPS module including keygen, 1151 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods. 1152 [Steve Henson] 1153 1154 *) Add similar low level API blocking to ciphers. 1155 [Steve Henson] 1156 1157 *) Low level digest APIs are not approved in FIPS mode: any attempt 1158 to use these will cause a fatal error. Applications that *really* want 1159 to use them can use the private_* version instead. 1160 [Steve Henson] 1161 1162 *) Redirect cipher operations to FIPS module for FIPS builds. 1163 [Steve Henson] 1164 1165 *) Redirect digest operations to FIPS module for FIPS builds. 1166 [Steve Henson] 1167 1168 *) Update build system to add "fips" flag which will link in fipscanister.o 1169 for static and shared library builds embedding a signature if needed. 1170 [Steve Henson] 1171 1172 *) Output TLS supported curves in preference order instead of numerical 1173 order. This is currently hardcoded for the highest order curves first. 1174 This should be configurable so applications can judge speed vs strength. 1175 [Steve Henson] 1176 1177 *) Add TLS v1.2 server support for client authentication. 1178 [Steve Henson] 1179 1180 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers 1181 and enable MD5. 1182 [Steve Henson] 1183 1184 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying 1185 FIPS modules versions. 1186 [Steve Henson] 1187 1188 *) Add TLS v1.2 client side support for client authentication. Keep cache 1189 of handshake records longer as we don't know the hash algorithm to use 1190 until after the certificate request message is received. 1191 [Steve Henson] 1192 1193 *) Initial TLS v1.2 client support. Add a default signature algorithms 1194 extension including all the algorithms we support. Parse new signature 1195 format in client key exchange. Relax some ECC signing restrictions for 1196 TLS v1.2 as indicated in RFC5246. 1197 [Steve Henson] 1198 1199 *) Add server support for TLS v1.2 signature algorithms extension. Switch 1200 to new signature format when needed using client digest preference. 1201 All server ciphersuites should now work correctly in TLS v1.2. No client 1202 support yet and no support for client certificates. 1203 [Steve Henson] 1204 1205 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch 1206 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based 1207 ciphersuites. At present only RSA key exchange ciphersuites work with 1208 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete 1209 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods 1210 and version checking. 1211 [Steve Henson] 1212 1213 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled 1214 with this defined it will not be affected by any changes to ssl internal 1215 structures. Add several utility functions to allow openssl application 1216 to work with OPENSSL_NO_SSL_INTERN defined. 1217 [Steve Henson] 1218 1219 *) Add SRP support. 1220 [Tom Wu <tjw (a] cs.stanford.edu> and Ben Laurie] 1221 1222 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id. 1223 [Steve Henson] 1224 1225 *) Permit abbreviated handshakes when renegotiating using the function 1226 SSL_renegotiate_abbreviated(). 1227 [Robin Seggelmann <seggelmann (a] fh-muenster.de>] 1228 1229 *) Add call to ENGINE_register_all_complete() to 1230 ENGINE_load_builtin_engines(), so some implementations get used 1231 automatically instead of needing explicit application support. 1232 [Steve Henson] 1233 1234 *) Add support for TLS key exporter as described in RFC5705. 1235 [Robin Seggelmann <seggelmann (a] fh-muenster.de>, Steve Henson] 1236 1237 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only 1238 a few changes are required: 1239 1240 Add SSL_OP_NO_TLSv1_1 flag. 1241 Add TLSv1_1 methods. 1242 Update version checking logic to handle version 1.1. 1243 Add explicit IV handling (ported from DTLS code). 1244 Add command line options to s_client/s_server. 1245 [Steve Henson] 1246 1247 Changes between 1.0.0g and 1.0.0h [12 Mar 2012] 1248 1249 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness 1250 in CMS and PKCS7 code. When RSA decryption fails use a random key for 1251 content decryption and always return the same error. Note: this attack 1252 needs on average 2^20 messages so it only affects automated senders. The 1253 old behaviour can be reenabled in the CMS code by setting the 1254 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where 1255 an MMA defence is not necessary. 1256 Thanks to Ivan Nestlerode <inestlerode (a] us.ibm.com> for discovering 1257 this issue. (CVE-2012-0884) 1258 [Steve Henson] 1259 1260 *) Fix CVE-2011-4619: make sure we really are receiving a 1261 client hello before rejecting multiple SGC restarts. Thanks to 1262 Ivan Nestlerode <inestlerode (a] us.ibm.com> for discovering this bug. 1263 [Steve Henson] 1264 1265 Changes between 1.0.0f and 1.0.0g [18 Jan 2012] 1266 1267 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109. 1268 Thanks to Antonio Martin, Enterprise Secure Access Research and 1269 Development, Cisco Systems, Inc. for discovering this bug and 1270 preparing a fix. (CVE-2012-0050) 1271 [Antonio Martin] 1272 1273 Changes between 1.0.0e and 1.0.0f [4 Jan 2012] 1274 1275 *) Nadhem Alfardan and Kenny Paterson have discovered an extension 1276 of the Vaudenay padding oracle attack on CBC mode encryption 1277 which enables an efficient plaintext recovery attack against 1278 the OpenSSL implementation of DTLS. Their attack exploits timing 1279 differences arising during decryption processing. A research 1280 paper describing this attack can be found at: 1281 http://www.isg.rhul.ac.uk/~kp/dtls.pdf 1282 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information 1283 Security Group at Royal Holloway, University of London 1284 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann 1285 <seggelmann (a] fh-muenster.de> and Michael Tuexen <tuexen (a] fh-muenster.de> 1286 for preparing the fix. (CVE-2011-4108) 1287 [Robin Seggelmann, Michael Tuexen] 1288 1289 *) Clear bytes used for block padding of SSL 3.0 records. 1290 (CVE-2011-4576) 1291 [Adam Langley (Google)] 1292 1293 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George 1294 Kadianakis <desnacked (a] gmail.com> for discovering this issue and 1295 Adam Langley for preparing the fix. (CVE-2011-4619) 1296 [Adam Langley (Google)] 1297 1298 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027) 1299 [Andrey Kulikov <amdeich (a] gmail.com>] 1300 1301 *) Prevent malformed RFC3779 data triggering an assertion failure. 1302 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw 1303 and Rob Austein <sra (a] hactrn.net> for fixing it. (CVE-2011-4577) 1304 [Rob Austein <sra (a] hactrn.net>] 1305 1306 *) Improved PRNG seeding for VOS. 1307 [Paul Green <Paul.Green (a] stratus.com>] 1308 1309 *) Fix ssl_ciph.c set-up race. 1310 [Adam Langley (Google)] 1311 1312 *) Fix spurious failures in ecdsatest.c. 1313 [Emilia Ksper (Google)] 1314 1315 *) Fix the BIO_f_buffer() implementation (which was mixing different 1316 interpretations of the '..._len' fields). 1317 [Adam Langley (Google)] 1318 1319 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than 1320 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent 1321 threads won't reuse the same blinding coefficients. 1322 1323 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING 1324 lock to call BN_BLINDING_invert_ex, and avoids one use of 1325 BN_BLINDING_update for each BN_BLINDING structure (previously, 1326 the last update always remained unused). 1327 [Emilia Ksper (Google)] 1328 1329 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf. 1330 [Bob Buckholz (Google)] 1331 1332 Changes between 1.0.0d and 1.0.0e [6 Sep 2011] 1333 1334 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted 1335 by initialising X509_STORE_CTX properly. (CVE-2011-3207) 1336 [Kaspar Brand <ossl (a] velox.ch>] 1337 1338 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular 1339 for multi-threaded use of ECDH. (CVE-2011-3210) 1340 [Adam Langley (Google)] 1341 1342 *) Fix x509_name_ex_d2i memory leak on bad inputs. 1343 [Bodo Moeller] 1344 1345 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check 1346 signature public key algorithm by using OID xref utilities instead. 1347 Before this you could only use some ECC ciphersuites with SHA1 only. 1348 [Steve Henson] 1349 1350 *) Add protection against ECDSA timing attacks as mentioned in the paper 1351 by Billy Bob Brumley and Nicola Tuveri, see: 1352 1353 http://eprint.iacr.org/2011/232.pdf 1354 1355 [Billy Bob Brumley and Nicola Tuveri] 1356 1357 Changes between 1.0.0c and 1.0.0d [8 Feb 2011] 1358 1359 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014 1360 [Neel Mehta, Adam Langley, Bodo Moeller (Google)] 1361 1362 *) Fix bug in string printing code: if *any* escaping is enabled we must 1363 escape the escape character (backslash) or the resulting string is 1364 ambiguous. 1365 [Steve Henson] 1366 1367 Changes between 1.0.0b and 1.0.0c [2 Dec 2010] 1368 1369 *) Disable code workaround for ancient and obsolete Netscape browsers 1370 and servers: an attacker can use it in a ciphersuite downgrade attack. 1371 Thanks to Martin Rex for discovering this bug. CVE-2010-4180 1372 [Steve Henson] 1373 1374 *) Fixed J-PAKE implementation error, originally discovered by 1375 Sebastien Martini, further info and confirmation from Stefan 1376 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252 1377 [Ben Laurie] 1378 1379 Changes between 1.0.0a and 1.0.0b [16 Nov 2010] 1380 1381 *) Fix extension code to avoid race conditions which can result in a buffer 1382 overrun vulnerability: resumed sessions must not be modified as they can 1383 be shared by multiple threads. CVE-2010-3864 1384 [Steve Henson] 1385 1386 *) Fix WIN32 build system to correctly link an ENGINE directory into 1387 a DLL. 1388 [Steve Henson] 1389 1390 Changes between 1.0.0 and 1.0.0a [01 Jun 2010] 1391 1392 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover 1393 (CVE-2010-1633) 1394 [Steve Henson, Peter-Michael Hager <hager (a] dortmund.net>] 1395 1396 Changes between 0.9.8n and 1.0.0 [29 Mar 2010] 1397 1398 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher 1399 context. The operation can be customised via the ctrl mechanism in 1400 case ENGINEs want to include additional functionality. 1401 [Steve Henson] 1402 1403 *) Tolerate yet another broken PKCS#8 key format: private key value negative. 1404 [Steve Henson] 1405 1406 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to 1407 output hashes compatible with older versions of OpenSSL. 1408 [Willy Weisz <weisz (a] vcpc.univie.ac.at>] 1409 1410 *) Fix compression algorithm handling: if resuming a session use the 1411 compression algorithm of the resumed session instead of determining 1412 it from client hello again. Don't allow server to change algorithm. 1413 [Steve Henson] 1414 1415 *) Add load_crls() function to apps tidying load_certs() too. Add option 1416 to verify utility to allow additional CRLs to be included. 1417 [Steve Henson] 1418 1419 *) Update OCSP request code to permit adding custom headers to the request: 1420 some responders need this. 1421 [Steve Henson] 1422 1423 *) The function EVP_PKEY_sign() returns <=0 on error: check return code 1424 correctly. 1425 [Julia Lawall <julia (a] diku.dk>] 1426 1427 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it 1428 needlessly dereferenced structures, used obsolete functions and 1429 didn't handle all updated verify codes correctly. 1430 [Steve Henson] 1431 1432 *) Disable MD2 in the default configuration. 1433 [Steve Henson] 1434 1435 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to 1436 indicate the initial BIO being pushed or popped. This makes it possible 1437 to determine whether the BIO is the one explicitly called or as a result 1438 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so 1439 it handles reference counts correctly and doesn't zero out the I/O bio 1440 when it is not being explicitly popped. WARNING: applications which 1441 included workarounds for the old buggy behaviour will need to be modified 1442 or they could free up already freed BIOs. 1443 [Steve Henson] 1444 1445 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni 1446 renaming to all platforms (within the 0.9.8 branch, this was 1447 done conditionally on Netware platforms to avoid a name clash). 1448 [Guenter <lists (a] gknw.net>] 1449 1450 *) Add ECDHE and PSK support to DTLS. 1451 [Michael Tuexen <tuexen (a] fh-muenster.de>] 1452 1453 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't 1454 be used on C++. 1455 [Steve Henson] 1456 1457 *) Add "missing" function EVP_MD_flags() (without this the only way to 1458 retrieve a digest flags is by accessing the structure directly. Update 1459 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest 1460 or cipher is registered as in the "from" argument. Print out all 1461 registered digests in the dgst usage message instead of manually 1462 attempting to work them out. 1463 [Steve Henson] 1464 1465 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello: 1466 this allows the use of compression and extensions. Change default cipher 1467 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2 1468 by default unless an application cipher string requests it. 1469 [Steve Henson] 1470 1471 *) Alter match criteria in PKCS12_parse(). It used to try to use local 1472 key ids to find matching certificates and keys but some PKCS#12 files 1473 don't follow the (somewhat unwritten) rules and this strategy fails. 1474 Now just gather all certificates together and the first private key 1475 then look for the first certificate that matches the key. 1476 [Steve Henson] 1477 1478 *) Support use of registered digest and cipher names for dgst and cipher 1479 commands instead of having to add each one as a special case. So now 1480 you can do: 1481 1482 openssl sha256 foo 1483 1484 as well as: 1485 1486 openssl dgst -sha256 foo 1487 1488 and this works for ENGINE based algorithms too. 1489 1490 [Steve Henson] 1491 1492 *) Update Gost ENGINE to support parameter files. 1493 [Victor B. Wagner <vitus (a] cryptocom.ru>] 1494 1495 *) Support GeneralizedTime in ca utility. 1496 [Oliver Martin <oliver (a] volatilevoid.net>, Steve Henson] 1497 1498 *) Enhance the hash format used for certificate directory links. The new 1499 form uses the canonical encoding (meaning equivalent names will work 1500 even if they aren't identical) and uses SHA1 instead of MD5. This form 1501 is incompatible with the older format and as a result c_rehash should 1502 be used to rebuild symbolic links. 1503 [Steve Henson] 1504 1505 *) Make PKCS#8 the default write format for private keys, replacing the 1506 traditional format. This form is standardised, more secure and doesn't 1507 include an implicit MD5 dependency. 1508 [Steve Henson] 1509 1510 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code 1511 committed to OpenSSL should pass this lot as a minimum. 1512 [Steve Henson] 1513 1514 *) Add session ticket override functionality for use by EAP-FAST. 1515 [Jouni Malinen <j (a] w1.fi>] 1516 1517 *) Modify HMAC functions to return a value. Since these can be implemented 1518 in an ENGINE errors can occur. 1519 [Steve Henson] 1520 1521 *) Type-checked OBJ_bsearch_ex. 1522 [Ben Laurie] 1523 1524 *) Type-checked OBJ_bsearch. Also some constification necessitated 1525 by type-checking. Still to come: TXT_DB, bsearch(?), 1526 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING, 1527 CONF_VALUE. 1528 [Ben Laurie] 1529 1530 *) New function OPENSSL_gmtime_adj() to add a specific number of days and 1531 seconds to a tm structure directly, instead of going through OS 1532 specific date routines. This avoids any issues with OS routines such 1533 as the year 2038 bug. New *_adj() functions for ASN1 time structures 1534 and X509_time_adj_ex() to cover the extended range. The existing 1535 X509_time_adj() is still usable and will no longer have any date issues. 1536 [Steve Henson] 1537 1538 *) Delta CRL support. New use deltas option which will attempt to locate 1539 and search any appropriate delta CRLs available. 1540 1541 This work was sponsored by Google. 1542 [Steve Henson] 1543 1544 *) Support for CRLs partitioned by reason code. Reorganise CRL processing 1545 code and add additional score elements. Validate alternate CRL paths 1546 as part of the CRL checking and indicate a new error "CRL path validation 1547 error" in this case. Applications wanting additional details can use 1548 the verify callback and check the new "parent" field. If this is not 1549 NULL CRL path validation is taking place. Existing applications wont 1550 see this because it requires extended CRL support which is off by 1551 default. 1552 1553 This work was sponsored by Google. 1554 [Steve Henson] 1555 1556 *) Support for freshest CRL extension. 1557 1558 This work was sponsored by Google. 1559 [Steve Henson] 1560 1561 *) Initial indirect CRL support. Currently only supported in the CRLs 1562 passed directly and not via lookup. Process certificate issuer 1563 CRL entry extension and lookup CRL entries by bother issuer name 1564 and serial number. Check and process CRL issuer entry in IDP extension. 1565 1566 This work was sponsored by Google. 1567 [Steve Henson] 1568 1569 *) Add support for distinct certificate and CRL paths. The CRL issuer 1570 certificate is validated separately in this case. Only enabled if 1571 an extended CRL support flag is set: this flag will enable additional 1572 CRL functionality in future. 1573 1574 This work was sponsored by Google. 1575 [Steve Henson] 1576 1577 *) Add support for policy mappings extension. 1578 1579 This work was sponsored by Google. 1580 [Steve Henson] 1581 1582 *) Fixes to pathlength constraint, self issued certificate handling, 1583 policy processing to align with RFC3280 and PKITS tests. 1584 1585 This work was sponsored by Google. 1586 [Steve Henson] 1587 1588 *) Support for name constraints certificate extension. DN, email, DNS 1589 and URI types are currently supported. 1590 1591 This work was sponsored by Google. 1592 [Steve Henson] 1593 1594 *) To cater for systems that provide a pointer-based thread ID rather 1595 than numeric, deprecate the current numeric thread ID mechanism and 1596 replace it with a structure and associated callback type. This 1597 mechanism allows a numeric "hash" to be extracted from a thread ID in 1598 either case, and on platforms where pointers are larger than 'long', 1599 mixing is done to help ensure the numeric 'hash' is usable even if it 1600 can't be guaranteed unique. The default mechanism is to use "&errno" 1601 as a pointer-based thread ID to distinguish between threads. 1602 1603 Applications that want to provide their own thread IDs should now use 1604 CRYPTO_THREADID_set_callback() to register a callback that will call 1605 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer(). 1606 1607 Note that ERR_remove_state() is now deprecated, because it is tied 1608 to the assumption that thread IDs are numeric. ERR_remove_state(0) 1609 to free the current thread's error state should be replaced by 1610 ERR_remove_thread_state(NULL). 1611 1612 (This new approach replaces the functions CRYPTO_set_idptr_callback(), 1613 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in 1614 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an 1615 application was previously providing a numeric thread callback that 1616 was inappropriate for distinguishing threads, then uniqueness might 1617 have been obtained with &errno that happened immediately in the 1618 intermediate development versions of OpenSSL; this is no longer the 1619 case, the numeric thread callback will now override the automatic use 1620 of &errno.) 1621 [Geoff Thorpe, with help from Bodo Moeller] 1622 1623 *) Initial support for different CRL issuing certificates. This covers a 1624 simple case where the self issued certificates in the chain exist and 1625 the real CRL issuer is higher in the existing chain. 1626 1627 This work was sponsored by Google. 1628 [Steve Henson] 1629 1630 *) Removed effectively defunct crypto/store from the build. 1631 [Ben Laurie] 1632 1633 *) Revamp of STACK to provide stronger type-checking. Still to come: 1634 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE, 1635 ASN1_STRING, CONF_VALUE. 1636 [Ben Laurie] 1637 1638 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer 1639 RAM on SSL connections. This option can save about 34k per idle SSL. 1640 [Nick Mathewson] 1641 1642 *) Revamp of LHASH to provide stronger type-checking. Still to come: 1643 STACK, TXT_DB, bsearch, qsort. 1644 [Ben Laurie] 1645 1646 *) Initial support for Cryptographic Message Syntax (aka CMS) based 1647 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility, 1648 support for data, signedData, compressedData, digestedData and 1649 encryptedData, envelopedData types included. Scripts to check against 1650 RFC4134 examples draft and interop and consistency checks of many 1651 content types and variants. 1652 [Steve Henson] 1653 1654 *) Add options to enc utility to support use of zlib compression BIO. 1655 [Steve Henson] 1656 1657 *) Extend mk1mf to support importing of options and assembly language 1658 files from Configure script, currently only included in VC-WIN32. 1659 The assembly language rules can now optionally generate the source 1660 files from the associated perl scripts. 1661 [Steve Henson] 1662 1663 *) Implement remaining functionality needed to support GOST ciphersuites. 1664 Interop testing has been performed using CryptoPro implementations. 1665 [Victor B. Wagner <vitus (a] cryptocom.ru>] 1666 1667 *) s390x assembler pack. 1668 [Andy Polyakov] 1669 1670 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU 1671 "family." 1672 [Andy Polyakov] 1673 1674 *) Implement Opaque PRF Input TLS extension as specified in 1675 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an 1676 official specification yet and no extension type assignment by 1677 IANA exists, this extension (for now) will have to be explicitly 1678 enabled when building OpenSSL by providing the extension number 1679 to use. For example, specify an option 1680 1681 -DTLSEXT_TYPE_opaque_prf_input=0x9527 1682 1683 to the "config" or "Configure" script to enable the extension, 1684 assuming extension number 0x9527 (which is a completely arbitrary 1685 and unofficial assignment based on the MD5 hash of the Internet 1686 Draft). Note that by doing so, you potentially lose 1687 interoperability with other TLS implementations since these might 1688 be using the same extension number for other purposes. 1689 1690 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the 1691 opaque PRF input value to use in the handshake. This will create 1692 an interal copy of the length-'len' string at 'src', and will 1693 return non-zero for success. 1694 1695 To get more control and flexibility, provide a callback function 1696 by using 1697 1698 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb) 1699 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg) 1700 1701 where 1702 1703 int (*cb)(SSL *, void *peerinput, size_t len, void *arg); 1704 void *arg; 1705 1706 Callback function 'cb' will be called in handshakes, and is 1707 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate. 1708 Argument 'arg' is for application purposes (the value as given to 1709 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly 1710 be provided to the callback function). The callback function 1711 has to return non-zero to report success: usually 1 to use opaque 1712 PRF input just if possible, or 2 to enforce use of the opaque PRF 1713 input. In the latter case, the library will abort the handshake 1714 if opaque PRF input is not successfully negotiated. 1715 1716 Arguments 'peerinput' and 'len' given to the callback function 1717 will always be NULL and 0 in the case of a client. A server will 1718 see the client's opaque PRF input through these variables if 1719 available (NULL and 0 otherwise). Note that if the server 1720 provides an opaque PRF input, the length must be the same as the 1721 length of the client's opaque PRF input. 1722 1723 Note that the callback function will only be called when creating 1724 a new session (session resumption can resume whatever was 1725 previously negotiated), and will not be called in SSL 2.0 1726 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or 1727 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended 1728 for applications that need to enforce opaque PRF input. 1729 1730 [Bodo Moeller] 1731 1732 *) Update ssl code to support digests other than SHA1+MD5 for handshake 1733 MAC. 1734 1735 [Victor B. Wagner <vitus (a] cryptocom.ru>] 1736 1737 *) Add RFC4507 support to OpenSSL. This includes the corrections in 1738 RFC4507bis. The encrypted ticket format is an encrypted encoded 1739 SSL_SESSION structure, that way new session features are automatically 1740 supported. 1741 1742 If a client application caches session in an SSL_SESSION structure 1743 support is transparent because tickets are now stored in the encoded 1744 SSL_SESSION. 1745 1746 The SSL_CTX structure automatically generates keys for ticket 1747 protection in servers so again support should be possible 1748 with no application modification. 1749 1750 If a client or server wishes to disable RFC4507 support then the option 1751 SSL_OP_NO_TICKET can be set. 1752 1753 Add a TLS extension debugging callback to allow the contents of any client 1754 or server extensions to be examined. 1755 1756 This work was sponsored by Google. 1757 [Steve Henson] 1758 1759 *) Final changes to avoid use of pointer pointer casts in OpenSSL. 1760 OpenSSL should now compile cleanly on gcc 4.2 1761 [Peter Hartley <pdh (a] utter.chaos.org.uk>, Steve Henson] 1762 1763 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC 1764 support including streaming MAC support: this is required for GOST 1765 ciphersuite support. 1766 [Victor B. Wagner <vitus (a] cryptocom.ru>, Steve Henson] 1767 1768 *) Add option -stream to use PKCS#7 streaming in smime utility. New 1769 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream() 1770 to output in BER and PEM format. 1771 [Steve Henson] 1772 1773 *) Experimental support for use of HMAC via EVP_PKEY interface. This 1774 allows HMAC to be handled via the EVP_DigestSign*() interface. The 1775 EVP_PKEY "key" in this case is the HMAC key, potentially allowing 1776 ENGINE support for HMAC keys which are unextractable. New -mac and 1777 -macopt options to dgst utility. 1778 [Steve Henson] 1779 1780 *) New option -sigopt to dgst utility. Update dgst to use 1781 EVP_Digest{Sign,Verify}*. These two changes make it possible to use 1782 alternative signing paramaters such as X9.31 or PSS in the dgst 1783 utility. 1784 [Steve Henson] 1785 1786 *) Change ssl_cipher_apply_rule(), the internal function that does 1787 the work each time a ciphersuite string requests enabling 1788 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or 1789 removing ("!foo+bar") a class of ciphersuites: Now it maintains 1790 the order of disabled ciphersuites such that those ciphersuites 1791 that most recently went from enabled to disabled not only stay 1792 in order with respect to each other, but also have higher priority 1793 than other disabled ciphersuites the next time ciphersuites are 1794 enabled again. 1795 1796 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable 1797 the same ciphersuites as with "HIGH" alone, but in a specific 1798 order where the PSK ciphersuites come first (since they are the 1799 most recently disabled ciphersuites when "HIGH" is parsed). 1800 1801 Also, change ssl_create_cipher_list() (using this new 1802 funcionality) such that between otherwise identical 1803 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in 1804 the default order. 1805 [Bodo Moeller] 1806 1807 *) Change ssl_create_cipher_list() so that it automatically 1808 arranges the ciphersuites in reasonable order before starting 1809 to process the rule string. Thus, the definition for "DEFAULT" 1810 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but 1811 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH". 1812 This makes it much easier to arrive at a reasonable default order 1813 in applications for which anonymous ciphers are OK (meaning 1814 that you can't actually use DEFAULT). 1815 [Bodo Moeller; suggested by Victor Duchovni] 1816 1817 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string 1818 processing) into multiple integers instead of setting 1819 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK", 1820 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer. 1821 (These masks as well as the individual bit definitions are hidden 1822 away into the non-exported interface ssl/ssl_locl.h, so this 1823 change to the definition of the SSL_CIPHER structure shouldn't 1824 affect applications.) This give us more bits for each of these 1825 categories, so there is no longer a need to coagulate AES128 and 1826 AES256 into a single algorithm bit, and to coagulate Camellia128 1827 and Camellia256 into a single algorithm bit, which has led to all 1828 kinds of kludges. 1829 1830 Thus, among other things, the kludge introduced in 0.9.7m and 1831 0.9.8e for masking out AES256 independently of AES128 or masking 1832 out Camellia256 independently of AES256 is not needed here in 0.9.9. 1833 1834 With the change, we also introduce new ciphersuite aliases that 1835 so far were missing: "AES128", "AES256", "CAMELLIA128", and 1836 "CAMELLIA256". 1837 [Bodo Moeller] 1838 1839 *) Add support for dsa-with-SHA224 and dsa-with-SHA256. 1840 Use the leftmost N bytes of the signature input if the input is 1841 larger than the prime q (with N being the size in bytes of q). 1842 [Nils Larsch] 1843 1844 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses 1845 it yet and it is largely untested. 1846 [Steve Henson] 1847 1848 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types. 1849 [Nils Larsch] 1850 1851 *) Initial incomplete changes to avoid need for function casts in OpenSSL 1852 some compilers (gcc 4.2 and later) reject their use. Safestack is 1853 reimplemented. Update ASN1 to avoid use of legacy functions. 1854 [Steve Henson] 1855 1856 *) Win32/64 targets are linked with Winsock2. 1857 [Andy Polyakov] 1858 1859 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected 1860 to external functions. This can be used to increase CRL handling 1861 efficiency especially when CRLs are very large by (for example) storing 1862 the CRL revoked certificates in a database. 1863 [Steve Henson] 1864 1865 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so 1866 new CRLs added to a directory can be used. New command line option 1867 -verify_return_error to s_client and s_server. This causes real errors 1868 to be returned by the verify callback instead of carrying on no matter 1869 what. This reflects the way a "real world" verify callback would behave. 1870 [Steve Henson] 1871 1872 *) GOST engine, supporting several GOST algorithms and public key formats. 1873 Kindly donated by Cryptocom. 1874 [Cryptocom] 1875 1876 *) Partial support for Issuing Distribution Point CRL extension. CRLs 1877 partitioned by DP are handled but no indirect CRL or reason partitioning 1878 (yet). Complete overhaul of CRL handling: now the most suitable CRL is 1879 selected via a scoring technique which handles IDP and AKID in CRLs. 1880 [Steve Henson] 1881 1882 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which 1883 will ultimately be used for all verify operations: this will remove the 1884 X509_STORE dependency on certificate verification and allow alternative 1885 lookup methods. X509_STORE based implementations of these two callbacks. 1886 [Steve Henson] 1887 1888 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names. 1889 Modify get_crl() to find a valid (unexpired) CRL if possible. 1890 [Steve Henson] 1891 1892 *) New function X509_CRL_match() to check if two CRLs are identical. Normally 1893 this would be called X509_CRL_cmp() but that name is already used by 1894 a function that just compares CRL issuer names. Cache several CRL 1895 extensions in X509_CRL structure and cache CRLDP in X509. 1896 [Steve Henson] 1897 1898 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name) 1899 this maps equivalent X509_NAME structures into a consistent structure. 1900 Name comparison can then be performed rapidly using memcmp(). 1901 [Steve Henson] 1902 1903 *) Non-blocking OCSP request processing. Add -timeout option to ocsp 1904 utility. 1905 [Steve Henson] 1906 1907 *) Allow digests to supply their own micalg string for S/MIME type using 1908 the ctrl EVP_MD_CTRL_MICALG. 1909 [Steve Henson] 1910 1911 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the 1912 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN 1913 ctrl. It can then customise the structure before and/or after signing 1914 if necessary. 1915 [Steve Henson] 1916 1917 *) New function OBJ_add_sigid() to allow application defined signature OIDs 1918 to be added to OpenSSLs internal tables. New function OBJ_sigid_free() 1919 to free up any added signature OIDs. 1920 [Steve Henson] 1921 1922 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(), 1923 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal 1924 digest and cipher tables. New options added to openssl utility: 1925 list-message-digest-algorithms and list-cipher-algorithms. 1926 [Steve Henson] 1927 1928 *) Change the array representation of binary polynomials: the list 1929 of degrees of non-zero coefficients is now terminated with -1. 1930 Previously it was terminated with 0, which was also part of the 1931 value; thus, the array representation was not applicable to 1932 polynomials where t^0 has coefficient zero. This change makes 1933 the array representation useful in a more general context. 1934 [Douglas Stebila] 1935 1936 *) Various modifications and fixes to SSL/TLS cipher string 1937 handling. For ECC, the code now distinguishes between fixed ECDH 1938 with RSA certificates on the one hand and with ECDSA certificates 1939 on the other hand, since these are separate ciphersuites. The 1940 unused code for Fortezza ciphersuites has been removed. 1941 1942 For consistency with EDH, ephemeral ECDH is now called "EECDH" 1943 (not "ECDHE"). For consistency with the code for DH 1944 certificates, use of ECDH certificates is now considered ECDH 1945 authentication, not RSA or ECDSA authentication (the latter is 1946 merely the CA's signing algorithm and not actively used in the 1947 protocol). 1948 1949 The temporary ciphersuite alias "ECCdraft" is no longer 1950 available, and ECC ciphersuites are no longer excluded from "ALL" 1951 and "DEFAULT". The following aliases now exist for RFC 4492 1952 ciphersuites, most of these by analogy with the DH case: 1953 1954 kECDHr - ECDH cert, signed with RSA 1955 kECDHe - ECDH cert, signed with ECDSA 1956 kECDH - ECDH cert (signed with either RSA or ECDSA) 1957 kEECDH - ephemeral ECDH 1958 ECDH - ECDH cert or ephemeral ECDH 1959 1960 aECDH - ECDH cert 1961 aECDSA - ECDSA cert 1962 ECDSA - ECDSA cert 1963 1964 AECDH - anonymous ECDH 1965 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH") 1966 1967 [Bodo Moeller] 1968 1969 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported. 1970 Use correct micalg parameters depending on digest(s) in signed message. 1971 [Steve Henson] 1972 1973 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process 1974 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code. 1975 [Steve Henson] 1976 1977 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit 1978 an engine to register a method. Add ENGINE lookups for methods and 1979 functional reference processing. 1980 [Steve Henson] 1981 1982 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of 1983 EVP_{Sign,Verify}* which allow an application to customise the signature 1984 process. 1985 [Steve Henson] 1986 1987 *) New -resign option to smime utility. This adds one or more signers 1988 to an existing PKCS#7 signedData structure. Also -md option to use an 1989 alternative message digest algorithm for signing. 1990 [Steve Henson] 1991 1992 *) Tidy up PKCS#7 routines and add new functions to make it easier to 1993 create PKCS7 structures containing multiple signers. Update smime 1994 application to support multiple signers. 1995 [Steve Henson] 1996 1997 *) New -macalg option to pkcs12 utility to allow setting of an alternative 1998 digest MAC. 1999 [Steve Henson] 2000 2001 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC. 2002 Reorganize PBE internals to lookup from a static table using NIDs, 2003 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl: 2004 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative 2005 PRF which will be automatically used with PBES2. 2006 [Steve Henson] 2007 2008 *) Replace the algorithm specific calls to generate keys in "req" with the 2009 new API. 2010 [Steve Henson] 2011 2012 *) Update PKCS#7 enveloped data routines to use new API. This is now 2013 supported by any public key method supporting the encrypt operation. A 2014 ctrl is added to allow the public key algorithm to examine or modify 2015 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is 2016 a no op. 2017 [Steve Henson] 2018 2019 *) Add a ctrl to asn1 method to allow a public key algorithm to express 2020 a default digest type to use. In most cases this will be SHA1 but some 2021 algorithms (such as GOST) need to specify an alternative digest. The 2022 return value indicates how strong the prefernce is 1 means optional and 2023 2 is mandatory (that is it is the only supported type). Modify 2024 ASN1_item_sign() to accept a NULL digest argument to indicate it should 2025 use the default md. Update openssl utilities to use the default digest 2026 type for signing if it is not explicitly indicated. 2027 [Steve Henson] 2028 2029 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New 2030 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant 2031 signing method from the key type. This effectively removes the link 2032 between digests and public key types. 2033 [Steve Henson] 2034 2035 *) Add an OID cross reference table and utility functions. Its purpose is to 2036 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1, 2037 rsaEncryption. This will allow some of the algorithm specific hackery 2038 needed to use the correct OID to be removed. 2039 [Steve Henson] 2040 2041 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO 2042 structures for PKCS7_sign(). They are now set up by the relevant public 2043 key ASN1 method. 2044 [Steve Henson] 2045 2046 *) Add provisional EC pkey method with support for ECDSA and ECDH. 2047 [Steve Henson] 2048 2049 *) Add support for key derivation (agreement) in the API, DH method and 2050 pkeyutl. 2051 [Steve Henson] 2052 2053 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support 2054 public and private key formats. As a side effect these add additional 2055 command line functionality not previously available: DSA signatures can be 2056 generated and verified using pkeyutl and DH key support and generation in 2057 pkey, genpkey. 2058 [Steve Henson] 2059 2060 *) BeOS support. 2061 [Oliver Tappe <zooey (a] hirschkaefer.de>] 2062 2063 *) New make target "install_html_docs" installs HTML renditions of the 2064 manual pages. 2065 [Oliver Tappe <zooey (a] hirschkaefer.de>] 2066 2067 *) New utility "genpkey" this is analagous to "genrsa" etc except it can 2068 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to 2069 support key and parameter generation and add initial key generation 2070 functionality for RSA. 2071 [Steve Henson] 2072 2073 *) Add functions for main EVP_PKEY_method operations. The undocumented 2074 functions EVP_PKEY_{encrypt,decrypt} have been renamed to 2075 EVP_PKEY_{encrypt,decrypt}_old. 2076 [Steve Henson] 2077 2078 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public 2079 key API, doesn't do much yet. 2080 [Steve Henson] 2081 2082 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about 2083 public key algorithms. New option to openssl utility: 2084 "list-public-key-algorithms" to print out info. 2085 [Steve Henson] 2086 2087 *) Implement the Supported Elliptic Curves Extension for 2088 ECC ciphersuites from draft-ietf-tls-ecc-12.txt. 2089 [Douglas Stebila] 2090 2091 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or 2092 EVP_CIPHER structures to avoid later problems in EVP_cleanup(). 2093 [Steve Henson] 2094 2095 *) New utilities pkey and pkeyparam. These are similar to algorithm specific 2096 utilities such as rsa, dsa, dsaparam etc except they process any key 2097 type. 2098 [Steve Henson] 2099 2100 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New 2101 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(), 2102 EVP_PKEY_print_param() to print public key data from an EVP_PKEY 2103 structure. 2104 [Steve Henson] 2105 2106 *) Initial support for pluggable public key ASN1. 2107 De-spaghettify the public key ASN1 handling. Move public and private 2108 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate 2109 algorithm specific handling to a single module within the relevant 2110 algorithm directory. Add functions to allow (near) opaque processing 2111 of public and private key structures. 2112 [Steve Henson] 2113 2114 *) Implement the Supported Point Formats Extension for 2115 ECC ciphersuites from draft-ietf-tls-ecc-12.txt. 2116 [Douglas Stebila] 2117 2118 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members 2119 for the psk identity [hint] and the psk callback functions to the 2120 SSL_SESSION, SSL and SSL_CTX structure. 2121 2122 New ciphersuites: 2123 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA, 2124 PSK-AES256-CBC-SHA 2125 2126 New functions: 2127 SSL_CTX_use_psk_identity_hint 2128 SSL_get_psk_identity_hint 2129 SSL_get_psk_identity 2130 SSL_use_psk_identity_hint 2131 2132 [Mika Kousa and Pasi Eronen of Nokia Corporation] 2133 2134 *) Add RFC 3161 compliant time stamp request creation, response generation 2135 and response verification functionality. 2136 [Zoltn Glzik <zglozik (a] opentsa.org>, The OpenTSA Project] 2137 2138 *) Add initial support for TLS extensions, specifically for the server_name 2139 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now 2140 have new members for a host name. The SSL data structure has an 2141 additional member SSL_CTX *initial_ctx so that new sessions can be 2142 stored in that context to allow for session resumption, even after the 2143 SSL has been switched to a new SSL_CTX in reaction to a client's 2144 server_name extension. 2145 2146 New functions (subject to change): 2147 2148 SSL_get_servername() 2149 SSL_get_servername_type() 2150 SSL_set_SSL_CTX() 2151 2152 New CTRL codes and macros (subject to change): 2153 2154 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB 2155 - SSL_CTX_set_tlsext_servername_callback() 2156 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG 2157 - SSL_CTX_set_tlsext_servername_arg() 2158 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name() 2159 2160 openssl s_client has a new '-servername ...' option. 2161 2162 openssl s_server has new options '-servername_host ...', '-cert2 ...', 2163 '-key2 ...', '-servername_fatal' (subject to change). This allows 2164 testing the HostName extension for a specific single host name ('-cert' 2165 and '-key' remain fallbacks for handshakes without HostName 2166 negotiation). If the unrecogninzed_name alert has to be sent, this by 2167 default is a warning; it becomes fatal with the '-servername_fatal' 2168 option. 2169 2170 [Peter Sylvester, Remy Allais, Christophe Renou] 2171 2172 *) Whirlpool hash implementation is added. 2173 [Andy Polyakov] 2174 2175 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to 2176 bn(64,32). Because of instruction set limitations it doesn't have 2177 any negative impact on performance. This was done mostly in order 2178 to make it possible to share assembler modules, such as bn_mul_mont 2179 implementations, between 32- and 64-bit builds without hassle. 2180 [Andy Polyakov] 2181 2182 *) Move code previously exiled into file crypto/ec/ec2_smpt.c 2183 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP 2184 macro. 2185 [Bodo Moeller] 2186 2187 *) New candidate for BIGNUM assembler implementation, bn_mul_mont, 2188 dedicated Montgomery multiplication procedure, is introduced. 2189 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher 2190 "64-bit" performance on certain 32-bit targets. 2191 [Andy Polyakov] 2192 2193 *) New option SSL_OP_NO_COMP to disable use of compression selectively 2194 in SSL structures. New SSL ctrl to set maximum send fragment size. 2195 Save memory by seeting the I/O buffer sizes dynamically instead of 2196 using the maximum available value. 2197 [Steve Henson] 2198 2199 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code 2200 in addition to the text details. 2201 [Bodo Moeller] 2202 2203 *) Very, very preliminary EXPERIMENTAL support for printing of general 2204 ASN1 structures. This currently produces rather ugly output and doesn't 2205 handle several customised structures at all. 2206 [Steve Henson] 2207 2208 *) Integrated support for PVK file format and some related formats such 2209 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support 2210 these in the 'rsa' and 'dsa' utilities. 2211 [Steve Henson] 2212 2213 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line. 2214 [Steve Henson] 2215 2216 *) Remove the ancient ASN1_METHOD code. This was only ever used in one 2217 place for the (very old) "NETSCAPE" format certificates which are now 2218 handled using new ASN1 code equivalents. 2219 [Steve Henson] 2220 2221 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD 2222 pointer and make the SSL_METHOD parameter in SSL_CTX_new, 2223 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'. 2224 [Nils Larsch] 2225 2226 *) Modify CRL distribution points extension code to print out previously 2227 unsupported fields. Enhance extension setting code to allow setting of 2228 all fields. 2229 [Steve Henson] 2230 2231 *) Add print and set support for Issuing Distribution Point CRL extension. 2232 [Steve Henson] 2233 2234 *) Change 'Configure' script to enable Camellia by default. 2235 [NTT] 2236 2237 Changes between 0.9.8m and 0.9.8n [24 Mar 2010] 2238 2239 *) When rejecting SSL/TLS records due to an incorrect version number, never 2240 update s->server with a new major version number. As of 2241 - OpenSSL 0.9.8m if 'short' is a 16-bit type, 2242 - OpenSSL 0.9.8f if 'short' is longer than 16 bits, 2243 the previous behavior could result in a read attempt at NULL when 2244 receiving specific incorrect SSL/TLS records once record payload 2245 protection is active. (CVE-2010-0740) 2246 [Bodo Moeller, Adam Langley <agl (a] chromium.org>] 2247 2248 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL 2249 could be crashed if the relevant tables were not present (e.g. chrooted). 2250 [Tomas Hoger <thoger (a] redhat.com>] 2251 2252 Changes between 0.9.8l and 0.9.8m [25 Feb 2010] 2253 2254 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245) 2255 [Martin Olsson, Neel Mehta] 2256 2257 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to 2258 accommodate for stack sorting, always a write lock!). 2259 [Bodo Moeller] 2260 2261 *) On some versions of WIN32 Heap32Next is very slow. This can cause 2262 excessive delays in the RAND_poll(): over a minute. As a workaround 2263 include a time check in the inner Heap32Next loop too. 2264 [Steve Henson] 2265 2266 *) The code that handled flushing of data in SSL/TLS originally used the 2267 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused 2268 the problem outlined in PR#1949. The fix suggested there however can 2269 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions 2270 of Apache). So instead simplify the code to flush unconditionally. 2271 This should be fine since flushing with no data to flush is a no op. 2272 [Steve Henson] 2273 2274 *) Handle TLS versions 2.0 and later properly and correctly use the 2275 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way 2276 off ancient servers have a habit of sticking around for a while... 2277 [Steve Henson] 2278 2279 *) Modify compression code so it frees up structures without using the 2280 ex_data callbacks. This works around a problem where some applications 2281 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when 2282 restarting) then use compression (e.g. SSL with compression) later. 2283 This results in significant per-connection memory leaks and 2284 has caused some security issues including CVE-2008-1678 and 2285 CVE-2009-4355. 2286 [Steve Henson] 2287 2288 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't 2289 change when encrypting or decrypting. 2290 [Bodo Moeller] 2291 2292 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to 2293 connect and renegotiate with servers which do not support RI. 2294 Until RI is more widely deployed this option is enabled by default. 2295 [Steve Henson] 2296 2297 *) Add "missing" ssl ctrls to clear options and mode. 2298 [Steve Henson] 2299 2300 *) If client attempts to renegotiate and doesn't support RI respond with 2301 a no_renegotiation alert as required by RFC5746. Some renegotiating 2302 TLS clients will continue a connection gracefully when they receive 2303 the alert. Unfortunately OpenSSL mishandled this alert and would hang 2304 waiting for a server hello which it will never receive. Now we treat a 2305 received no_renegotiation alert as a fatal error. This is because 2306 applications requesting a renegotiation might well expect it to succeed 2307 and would have no code in place to handle the server denying it so the 2308 only safe thing to do is to terminate the connection. 2309 [Steve Henson] 2310 2311 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if 2312 peer supports secure renegotiation and 0 otherwise. Print out peer 2313 renegotiation support in s_client/s_server. 2314 [Steve Henson] 2315 2316 *) Replace the highly broken and deprecated SPKAC certification method with 2317 the updated NID creation version. This should correctly handle UTF8. 2318 [Steve Henson] 2319 2320 *) Implement RFC5746. Re-enable renegotiation but require the extension 2321 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION 2322 turns out to be a bad idea. It has been replaced by 2323 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with 2324 SSL_CTX_set_options(). This is really not recommended unless you 2325 know what you are doing. 2326 [Eric Rescorla <ekr (a] networkresonance.com>, Ben Laurie, Steve Henson] 2327 2328 *) Fixes to stateless session resumption handling. Use initial_ctx when 2329 issuing and attempting to decrypt tickets in case it has changed during 2330 servername handling. Use a non-zero length session ID when attempting 2331 stateless session resumption: this makes it possible to determine if 2332 a resumption has occurred immediately after receiving server hello 2333 (several places in OpenSSL subtly assume this) instead of later in 2334 the handshake. 2335 [Steve Henson] 2336 2337 *) The functions ENGINE_ctrl(), OPENSSL_isservice(), 2338 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error 2339 fixes for a few places where the return code is not checked 2340 correctly. 2341 [Julia Lawall <julia (a] diku.dk>] 2342 2343 *) Add --strict-warnings option to Configure script to include devteam 2344 warnings in other configurations. 2345 [Steve Henson] 2346 2347 *) Add support for --libdir option and LIBDIR variable in makefiles. This 2348 makes it possible to install openssl libraries in locations which 2349 have names other than "lib", for example "/usr/lib64" which some 2350 systems need. 2351 [Steve Henson, based on patch from Jeremy Utley] 2352 2353 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of 2354 X690 8.9.12 and can produce some misleading textual output of OIDs. 2355 [Steve Henson, reported by Dan Kaminsky] 2356 2357 *) Delete MD2 from algorithm tables. This follows the recommendation in 2358 several standards that it is not used in new applications due to 2359 several cryptographic weaknesses. For binary compatibility reasons 2360 the MD2 API is still compiled in by default. 2361 [Steve Henson] 2362 2363 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved 2364 and restored. 2365 [Steve Henson] 2366 2367 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and 2368 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name 2369 clash. 2370 [Guenter <lists (a] gknw.net>] 2371 2372 *) Fix the server certificate chain building code to use X509_verify_cert(), 2373 it used to have an ad-hoc builder which was unable to cope with anything 2374 other than a simple chain. 2375 [David Woodhouse <dwmw2 (a] infradead.org>, Steve Henson] 2376 2377 *) Don't check self signed certificate signatures in X509_verify_cert() 2378 by default (a flag can override this): it just wastes time without 2379 adding any security. As a useful side effect self signed root CAs 2380 with non-FIPS digests are now usable in FIPS mode. 2381 [Steve Henson] 2382 2383 *) In dtls1_process_out_of_seq_message() the check if the current message 2384 is already buffered was missing. For every new message was memory 2385 allocated, allowing an attacker to perform an denial of service attack 2386 with sending out of seq handshake messages until there is no memory 2387 left. Additionally every future messege was buffered, even if the 2388 sequence number made no sense and would be part of another handshake. 2389 So only messages with sequence numbers less than 10 in advance will be 2390 buffered. (CVE-2009-1378) 2391 [Robin Seggelmann, discovered by Daniel Mentz] 2392 2393 *) Records are buffered if they arrive with a future epoch to be 2394 processed after finishing the corresponding handshake. There is 2395 currently no limitation to this buffer allowing an attacker to perform 2396 a DOS attack with sending records with future epochs until there is no 2397 memory left. This patch adds the pqueue_size() function to detemine 2398 the size of a buffer and limits the record buffer to 100 entries. 2399 (CVE-2009-1377) 2400 [Robin Seggelmann, discovered by Daniel Mentz] 2401 2402 *) Keep a copy of frag->msg_header.frag_len so it can be used after the 2403 parent structure is freed. (CVE-2009-1379) 2404 [Daniel Mentz] 2405 2406 *) Handle non-blocking I/O properly in SSL_shutdown() call. 2407 [Darryl Miles <darryl-mailinglists (a] netbauds.net>] 2408 2409 *) Add 2.5.4.* OIDs 2410 [Ilya O. <vrghost (a] gmail.com>] 2411 2412 Changes between 0.9.8k and 0.9.8l [5 Nov 2009] 2413 2414 *) Disable renegotiation completely - this fixes a severe security 2415 problem (CVE-2009-3555) at the cost of breaking all 2416 renegotiation. Renegotiation can be re-enabled by setting 2417 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at 2418 run-time. This is really not recommended unless you know what 2419 you're doing. 2420 [Ben Laurie] 2421 2422 Changes between 0.9.8j and 0.9.8k [25 Mar 2009] 2423 2424 *) Don't set val to NULL when freeing up structures, it is freed up by 2425 underlying code. If sizeof(void *) > sizeof(long) this can result in 2426 zeroing past the valid field. (CVE-2009-0789) 2427 [Paolo Ganci <Paolo.Ganci (a] AdNovum.CH>] 2428 2429 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not 2430 checked correctly. This would allow some invalid signed attributes to 2431 appear to verify correctly. (CVE-2009-0591) 2432 [Ivan Nestlerode <inestlerode (a] us.ibm.com>] 2433 2434 *) Reject UniversalString and BMPString types with invalid lengths. This 2435 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have 2436 a legal length. (CVE-2009-0590) 2437 [Steve Henson] 2438 2439 *) Set S/MIME signing as the default purpose rather than setting it 2440 unconditionally. This allows applications to override it at the store 2441 level. 2442 [Steve Henson] 2443 2444 *) Permit restricted recursion of ASN1 strings. This is needed in practice 2445 to handle some structures. 2446 [Steve Henson] 2447 2448 *) Improve efficiency of mem_gets: don't search whole buffer each time 2449 for a '\n' 2450 [Jeremy Shapiro <jnshapir (a] us.ibm.com>] 2451 2452 *) New -hex option for openssl rand. 2453 [Matthieu Herrb] 2454 2455 *) Print out UTF8String and NumericString when parsing ASN1. 2456 [Steve Henson] 2457 2458 *) Support NumericString type for name components. 2459 [Steve Henson] 2460 2461 *) Allow CC in the environment to override the automatically chosen 2462 compiler. Note that nothing is done to ensure flags work with the 2463 chosen compiler. 2464 [Ben Laurie] 2465 2466 Changes between 0.9.8i and 0.9.8j [07 Jan 2009] 2467 2468 *) Properly check EVP_VerifyFinal() and similar return values 2469 (CVE-2008-5077). 2470 [Ben Laurie, Bodo Moeller, Google Security Team] 2471 2472 *) Enable TLS extensions by default. 2473 [Ben Laurie] 2474 2475 *) Allow the CHIL engine to be loaded, whether the application is 2476 multithreaded or not. (This does not release the developer from the 2477 obligation to set up the dynamic locking callbacks.) 2478 [Sander Temme <sander (a] temme.net>] 2479 2480 *) Use correct exit code if there is an error in dgst command. 2481 [Steve Henson; problem pointed out by Roland Dirlewanger] 2482 2483 *) Tweak Configure so that you need to say "experimental-jpake" to enable 2484 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications. 2485 [Bodo Moeller] 2486 2487 *) Add experimental JPAKE support, including demo authentication in 2488 s_client and s_server. 2489 [Ben Laurie] 2490 2491 *) Set the comparison function in v3_addr_canonize(). 2492 [Rob Austein <sra (a] hactrn.net>] 2493 2494 *) Add support for XMPP STARTTLS in s_client. 2495 [Philip Paeps <philip (a] freebsd.org>] 2496 2497 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior 2498 to ensure that even with this option, only ciphersuites in the 2499 server's preference list will be accepted. (Note that the option 2500 applies only when resuming a session, so the earlier behavior was 2501 just about the algorithm choice for symmetric cryptography.) 2502 [Bodo Moeller] 2503 2504 Changes between 0.9.8h and 0.9.8i [15 Sep 2008] 2505 2506 *) Fix NULL pointer dereference if a DTLS server received 2507 ChangeCipherSpec as first record (CVE-2009-1386). 2508 [PR #1679] 2509 2510 *) Fix a state transitition in s3_srvr.c and d1_srvr.c 2511 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...). 2512 [Nagendra Modadugu] 2513 2514 *) The fix in 0.9.8c that supposedly got rid of unsafe 2515 double-checked locking was incomplete for RSA blinding, 2516 addressing just one layer of what turns out to have been 2517 doubly unsafe triple-checked locking. 2518 2519 So now fix this for real by retiring the MONT_HELPER macro 2520 in crypto/rsa/rsa_eay.c. 2521 2522 [Bodo Moeller; problem pointed out by Marius Schilder] 2523 2524 *) Various precautionary measures: 2525 2526 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h). 2527 2528 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c). 2529 (NB: This would require knowledge of the secret session ticket key 2530 to exploit, in which case you'd be SOL either way.) 2531 2532 - Change bn_nist.c so that it will properly handle input BIGNUMs 2533 outside the expected range. 2534 2535 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG 2536 builds. 2537 2538 [Neel Mehta, Bodo Moeller] 2539 2540 *) Allow engines to be "soft loaded" - i.e. optionally don't die if 2541 the load fails. Useful for distros. 2542 [Ben Laurie and the FreeBSD team] 2543 2544 *) Add support for Local Machine Keyset attribute in PKCS#12 files. 2545 [Steve Henson] 2546 2547 *) Fix BN_GF2m_mod_arr() top-bit cleanup code. 2548 [Huang Ying] 2549 2550 *) Expand ENGINE to support engine supplied SSL client certificate functions. 2551 2552 This work was sponsored by Logica. 2553 [Steve Henson] 2554 2555 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows 2556 keystores. Support for SSL/TLS client authentication too. 2557 Not compiled unless enable-capieng specified to Configure. 2558 2559 This work was sponsored by Logica. 2560 [Steve Henson] 2561 2562 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using 2563 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain 2564 attribute creation routines such as certifcate requests and PKCS#12 2565 files. 2566 [Steve Henson] 2567 2568 Changes between 0.9.8g and 0.9.8h [28 May 2008] 2569 2570 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS 2571 handshake which could lead to a cilent crash as found using the 2572 Codenomicon TLS test suite (CVE-2008-1672) 2573 [Steve Henson, Mark Cox] 2574 2575 *) Fix double free in TLS server name extensions which could lead to 2576 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891) 2577 [Joe Orton] 2578 2579 *) Clear error queue in SSL_CTX_use_certificate_chain_file() 2580 2581 Clear the error queue to ensure that error entries left from 2582 older function calls do not interfere with the correct operation. 2583 [Lutz Jaenicke, Erik de Castro Lopo] 2584 2585 *) Remove root CA certificates of commercial CAs: 2586 2587 The OpenSSL project does not recommend any specific CA and does not 2588 have any policy with respect to including or excluding any CA. 2589 Therefore it does not make any sense to ship an arbitrary selection 2590 of root CA certificates with the OpenSSL software. 2591 [Lutz Jaenicke] 2592 2593 *) RSA OAEP patches to fix two separate invalid memory reads. 2594 The first one involves inputs when 'lzero' is greater than 2595 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes 2596 before the beginning of from). The second one involves inputs where 2597 the 'db' section contains nothing but zeroes (there is a one-byte 2598 invalid read after the end of 'db'). 2599 [Ivan Nestlerode <inestlerode (a] us.ibm.com>] 2600 2601 *) Partial backport from 0.9.9-dev: 2602 2603 Introduce bn_mul_mont (dedicated Montgomery multiplication 2604 procedure) as a candidate for BIGNUM assembler implementation. 2605 While 0.9.9-dev uses assembler for various architectures, only 2606 x86_64 is available by default here in the 0.9.8 branch, and 2607 32-bit x86 is available through a compile-time setting. 2608 2609 To try the 32-bit x86 assembler implementation, use Configure 2610 option "enable-montasm" (which exists only for this backport). 2611 2612 As "enable-montasm" for 32-bit x86 disclaims code stability 2613 anyway, in this constellation we activate additional code 2614 backported from 0.9.9-dev for further performance improvements, 2615 namely BN_from_montgomery_word. (To enable this otherwise, 2616 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".) 2617 2618 [Andy Polyakov (backport partially by Bodo Moeller)] 2619 2620 *) Add TLS session ticket callback. This allows an application to set 2621 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed 2622 values. This is useful for key rollover for example where several key 2623 sets may exist with different names. 2624 [Steve Henson] 2625 2626 *) Reverse ENGINE-internal logic for caching default ENGINE handles. 2627 This was broken until now in 0.9.8 releases, such that the only way 2628 a registered ENGINE could be used (assuming it initialises 2629 successfully on the host) was to explicitly set it as the default 2630 for the relevant algorithms. This is in contradiction with 0.9.7 2631 behaviour and the documentation. With this fix, when an ENGINE is 2632 registered into a given algorithm's table of implementations, the 2633 'uptodate' flag is reset so that auto-discovery will be used next 2634 time a new context for that algorithm attempts to select an 2635 implementation. 2636 [Ian Lister (tweaked by Geoff Thorpe)] 2637 2638 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9 2639 implemention in the following ways: 2640 2641 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be 2642 hard coded. 2643 2644 Lack of BER streaming support means one pass streaming processing is 2645 only supported if data is detached: setting the streaming flag is 2646 ignored for embedded content. 2647 2648 CMS support is disabled by default and must be explicitly enabled 2649 with the enable-cms configuration option. 2650 [Steve Henson] 2651 2652 *) Update the GMP engine glue to do direct copies between BIGNUM and 2653 mpz_t when openssl and GMP use the same limb size. Otherwise the 2654 existing "conversion via a text string export" trick is still used. 2655 [Paul Sheer <paulsheer (a] gmail.com>] 2656 2657 *) Zlib compression BIO. This is a filter BIO which compressed and 2658 uncompresses any data passed through it. 2659 [Steve Henson] 2660 2661 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement 2662 RFC3394 compatible AES key wrapping. 2663 [Steve Henson] 2664 2665 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0(): 2666 sets string data without copying. X509_ALGOR_set0() and 2667 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier) 2668 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data 2669 from an X509_ATTRIBUTE structure optionally checking it occurs only 2670 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied 2671 data. 2672 [Steve Henson] 2673 2674 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set() 2675 to get the expected BN_FLG_CONSTTIME behavior. 2676 [Bodo Moeller (Google)] 2677 2678 *) Netware support: 2679 2680 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets 2681 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT) 2682 - added some more tests to do_tests.pl 2683 - fixed RunningProcess usage so that it works with newer LIBC NDKs too 2684 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency 2685 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc, 2686 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc 2687 - various changes to netware.pl to enable gcc-cross builds on Win32 2688 platform 2689 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD) 2690 - various changes to fix missing prototype warnings 2691 - fixed x86nasm.pl to create correct asm files for NASM COFF output 2692 - added AES, WHIRLPOOL and CPUID assembler code to build files 2693 - added missing AES assembler make rules to mk1mf.pl 2694 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply 2695 [Guenter Knauf <eflash (a] gmx.net>] 2696 2697 *) Implement certificate status request TLS extension defined in RFC3546. 2698 A client can set the appropriate parameters and receive the encoded 2699 OCSP response via a callback. A server can query the supplied parameters 2700 and set the encoded OCSP response in the callback. Add simplified examples 2701 to s_client and s_server. 2702 [Steve Henson] 2703 2704 Changes between 0.9.8f and 0.9.8g [19 Oct 2007] 2705 2706 *) Fix various bugs: 2707 + Binary incompatibility of ssl_ctx_st structure 2708 + DTLS interoperation with non-compliant servers 2709 + Don't call get_session_cb() without proposed session 2710 + Fix ia64 assembler code 2711 [Andy Polyakov, Steve Henson] 2712 2713 Changes between 0.9.8e and 0.9.8f [11 Oct 2007] 2714 2715 *) DTLS Handshake overhaul. There were longstanding issues with 2716 OpenSSL DTLS implementation, which were making it impossible for 2717 RFC 4347 compliant client to communicate with OpenSSL server. 2718 Unfortunately just fixing these incompatibilities would "cut off" 2719 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e 2720 server keeps tolerating non RFC compliant syntax. The opposite is 2721 not true, 0.9.8f client can not communicate with earlier server. 2722 This update even addresses CVE-2007-4995. 2723 [Andy Polyakov] 2724 2725 *) Changes to avoid need for function casts in OpenSSL: some compilers 2726 (gcc 4.2 and later) reject their use. 2727 [Kurt Roeckx <kurt (a] roeckx.be>, Peter Hartley <pdh (a] utter.chaos.org.uk>, 2728 Steve Henson] 2729 2730 *) Add RFC4507 support to OpenSSL. This includes the corrections in 2731 RFC4507bis. The encrypted ticket format is an encrypted encoded 2732 SSL_SESSION structure, that way new session features are automatically 2733 supported. 2734 2735 If a client application caches session in an SSL_SESSION structure 2736 support is transparent because tickets are now stored in the encoded 2737 SSL_SESSION. 2738 2739 The SSL_CTX structure automatically generates keys for ticket 2740 protection in servers so again support should be possible 2741 with no application modification. 2742 2743 If a client or server wishes to disable RFC4507 support then the option 2744 SSL_OP_NO_TICKET can be set. 2745 2746 Add a TLS extension debugging callback to allow the contents of any client 2747 or server extensions to be examined. 2748 2749 This work was sponsored by Google. 2750 [Steve Henson] 2751 2752 *) Add initial support for TLS extensions, specifically for the server_name 2753 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now 2754 have new members for a host name. The SSL data structure has an 2755 additional member SSL_CTX *initial_ctx so that new sessions can be 2756 stored in that context to allow for session resumption, even after the 2757 SSL has been switched to a new SSL_CTX in reaction to a client's 2758 server_name extension. 2759 2760 New functions (subject to change): 2761 2762 SSL_get_servername() 2763 SSL_get_servername_type() 2764 SSL_set_SSL_CTX() 2765 2766 New CTRL codes and macros (subject to change): 2767 2768 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB 2769 - SSL_CTX_set_tlsext_servername_callback() 2770 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG 2771 - SSL_CTX_set_tlsext_servername_arg() 2772 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name() 2773 2774 openssl s_client has a new '-servername ...' option. 2775 2776 openssl s_server has new options '-servername_host ...', '-cert2 ...', 2777 '-key2 ...', '-servername_fatal' (subject to change). This allows 2778 testing the HostName extension for a specific single host name ('-cert' 2779 and '-key' remain fallbacks for handshakes without HostName 2780 negotiation). If the unrecogninzed_name alert has to be sent, this by 2781 default is a warning; it becomes fatal with the '-servername_fatal' 2782 option. 2783 2784 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson] 2785 2786 *) Add AES and SSE2 assembly language support to VC++ build. 2787 [Steve Henson] 2788 2789 *) Mitigate attack on final subtraction in Montgomery reduction. 2790 [Andy Polyakov] 2791 2792 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0 2793 (which previously caused an internal error). 2794 [Bodo Moeller] 2795 2796 *) Squeeze another 10% out of IGE mode when in != out. 2797 [Ben Laurie] 2798 2799 *) AES IGE mode speedup. 2800 [Dean Gaudet (Google)] 2801 2802 *) Add the Korean symmetric 128-bit cipher SEED (see 2803 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and 2804 add SEED ciphersuites from RFC 4162: 2805 2806 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA" 2807 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA" 2808 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA" 2809 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA" 2810 2811 To minimize changes between patchlevels in the OpenSSL 0.9.8 2812 series, SEED remains excluded from compilation unless OpenSSL 2813 is configured with 'enable-seed'. 2814 [KISA, Bodo Moeller] 2815 2816 *) Mitigate branch prediction attacks, which can be practical if a 2817 single processor is shared, allowing a spy process to extract 2818 information. For detailed background information, see 2819 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron, 2820 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL 2821 and Necessary Software Countermeasures"). The core of the change 2822 are new versions BN_div_no_branch() and 2823 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(), 2824 respectively, which are slower, but avoid the security-relevant 2825 conditional branches. These are automatically called by BN_div() 2826 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one 2827 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to 2828 remove a conditional branch. 2829 2830 BN_FLG_CONSTTIME is the new name for the previous 2831 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just 2832 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag 2833 in the exponent causes BN_mod_exp_mont() to use the alternative 2834 implementation in BN_mod_exp_mont_consttime().) The old name 2835 remains as a deprecated alias. 2836 2837 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general 2838 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses 2839 constant-time implementations for more than just exponentiation. 2840 Here too the old name is kept as a deprecated alias. 2841 2842 BN_BLINDING_new() will now use BN_dup() for the modulus so that 2843 the BN_BLINDING structure gets an independent copy of the 2844 modulus. This means that the previous "BIGNUM *m" argument to 2845 BN_BLINDING_new() and to BN_BLINDING_create_param() now 2846 essentially becomes "const BIGNUM *m", although we can't actually 2847 change this in the header file before 0.9.9. It allows 2848 RSA_setup_blinding() to use BN_with_flags() on the modulus to 2849 enable BN_FLG_CONSTTIME. 2850 2851 [Matthew D Wood (Intel Corp)] 2852 2853 *) In the SSL/TLS server implementation, be strict about session ID 2854 context matching (which matters if an application uses a single 2855 external cache for different purposes). Previously, 2856 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was 2857 set. This did ensure strict client verification, but meant that, 2858 with applications using a single external cache for quite 2859 different requirements, clients could circumvent ciphersuite 2860 restrictions for a given session ID context by starting a session 2861 in a different context. 2862 [Bodo Moeller] 2863 2864 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that 2865 a ciphersuite string such as "DEFAULT:RSA" cannot enable 2866 authentication-only ciphersuites. 2867 [Bodo Moeller] 2868 2869 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was 2870 not complete and could lead to a possible single byte overflow 2871 (CVE-2007-5135) [Ben Laurie] 2872 2873 Changes between 0.9.8d and 0.9.8e [23 Feb 2007] 2874 2875 *) Since AES128 and AES256 (and similarly Camellia128 and 2876 Camellia256) share a single mask bit in the logic of 2877 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a 2878 kludge to work properly if AES128 is available and AES256 isn't 2879 (or if Camellia128 is available and Camellia256 isn't). 2880 [Victor Duchovni] 2881 2882 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c 2883 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters): 2884 When a point or a seed is encoded in a BIT STRING, we need to 2885 prevent the removal of trailing zero bits to get the proper DER 2886 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case 2887 of a NamedBitList, for which trailing 0 bits need to be removed.) 2888 [Bodo Moeller] 2889 2890 *) Have SSL/TLS server implementation tolerate "mismatched" record 2891 protocol version while receiving ClientHello even if the 2892 ClientHello is fragmented. (The server can't insist on the 2893 particular protocol version it has chosen before the ServerHello 2894 message has informed the client about his choice.) 2895 [Bodo Moeller] 2896 2897 *) Add RFC 3779 support. 2898 [Rob Austein for ARIN, Ben Laurie] 2899 2900 *) Load error codes if they are not already present instead of using a 2901 static variable. This allows them to be cleanly unloaded and reloaded. 2902 Improve header file function name parsing. 2903 [Steve Henson] 2904 2905 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO 2906 or CAPABILITY handshake as required by RFCs. 2907 [Goetz Babin-Ebell] 2908 2909 Changes between 0.9.8c and 0.9.8d [28 Sep 2006] 2910 2911 *) Introduce limits to prevent malicious keys being able to 2912 cause a denial of service. (CVE-2006-2940) 2913 [Steve Henson, Bodo Moeller] 2914 2915 *) Fix ASN.1 parsing of certain invalid structures that can result 2916 in a denial of service. (CVE-2006-2937) [Steve Henson] 2917 2918 *) Fix buffer overflow in SSL_get_shared_ciphers() function. 2919 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team] 2920 2921 *) Fix SSL client code which could crash if connecting to a 2922 malicious SSLv2 server. (CVE-2006-4343) 2923 [Tavis Ormandy and Will Drewry, Google Security Team] 2924 2925 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites 2926 match only those. Before that, "AES256-SHA" would be interpreted 2927 as a pattern and match "AES128-SHA" too (since AES128-SHA got 2928 the same strength classification in 0.9.7h) as we currently only 2929 have a single AES bit in the ciphersuite description bitmap. 2930 That change, however, also applied to ciphersuite strings such as 2931 "RC4-MD5" that intentionally matched multiple ciphersuites -- 2932 namely, SSL 2.0 ciphersuites in addition to the more common ones 2933 from SSL 3.0/TLS 1.0. 2934 2935 So we change the selection algorithm again: Naming an explicit 2936 ciphersuite selects this one ciphersuite, and any other similar 2937 ciphersuite (same bitmap) from *other* protocol versions. 2938 Thus, "RC4-MD5" again will properly select both the SSL 2.0 2939 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite. 2940 2941 Since SSL 2.0 does not have any ciphersuites for which the 2942 128/256 bit distinction would be relevant, this works for now. 2943 The proper fix will be to use different bits for AES128 and 2944 AES256, which would have avoided the problems from the beginning; 2945 however, bits are scarce, so we can only do this in a new release 2946 (not just a patchlevel) when we can change the SSL_CIPHER 2947 definition to split the single 'unsigned long mask' bitmap into 2948 multiple values to extend the available space. 2949 2950 [Bodo Moeller] 2951 2952 Changes between 0.9.8b and 0.9.8c [05 Sep 2006] 2953 2954 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher 2955 (CVE-2006-4339) [Ben Laurie and Google Security Team] 2956 2957 *) Add AES IGE and biIGE modes. 2958 [Ben Laurie] 2959 2960 *) Change the Unix randomness entropy gathering to use poll() when 2961 possible instead of select(), since the latter has some 2962 undesirable limitations. 2963 [Darryl Miles via Richard Levitte and Bodo Moeller] 2964 2965 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special 2966 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites 2967 cannot be implicitly activated as part of, e.g., the "AES" alias. 2968 However, please upgrade to OpenSSL 0.9.9[-dev] for 2969 non-experimental use of the ECC ciphersuites to get TLS extension 2970 support, which is required for curve and point format negotiation 2971 to avoid potential handshake problems. 2972 [Bodo Moeller] 2973 2974 *) Disable rogue ciphersuites: 2975 2976 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5") 2977 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5") 2978 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5") 2979 2980 The latter two were purportedly from 2981 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really 2982 appear there. 2983 2984 Also deactivate the remaining ciphersuites from 2985 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as 2986 unofficial, and the ID has long expired. 2987 [Bodo Moeller] 2988 2989 *) Fix RSA blinding Heisenbug (problems sometimes occured on 2990 dual-core machines) and other potential thread-safety issues. 2991 [Bodo Moeller] 2992 2993 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key 2994 versions), which is now available for royalty-free use 2995 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html). 2996 Also, add Camellia TLS ciphersuites from RFC 4132. 2997 2998 To minimize changes between patchlevels in the OpenSSL 0.9.8 2999 series, Camellia remains excluded from compilation unless OpenSSL 3000 is configured with 'enable-camellia'. 3001 [NTT] 3002 3003 *) Disable the padding bug check when compression is in use. The padding 3004 bug check assumes the first packet is of even length, this is not 3005 necessarily true if compresssion is enabled and can result in false 3006 positives causing handshake failure. The actual bug test is ancient 3007 code so it is hoped that implementations will either have fixed it by 3008 now or any which still have the bug do not support compression. 3009 [Steve Henson] 3010 3011 Changes between 0.9.8a and 0.9.8b [04 May 2006] 3012 3013 *) When applying a cipher rule check to see if string match is an explicit 3014 cipher suite and only match that one cipher suite if it is. 3015 [Steve Henson] 3016 3017 *) Link in manifests for VC++ if needed. 3018 [Austin Ziegler <halostatue (a] gmail.com>] 3019 3020 *) Update support for ECC-based TLS ciphersuites according to 3021 draft-ietf-tls-ecc-12.txt with proposed changes (but without 3022 TLS extensions, which are supported starting with the 0.9.9 3023 branch, not in the OpenSSL 0.9.8 branch). 3024 [Douglas Stebila] 3025 3026 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support 3027 opaque EVP_CIPHER_CTX handling. 3028 [Steve Henson] 3029 3030 *) Fixes and enhancements to zlib compression code. We now only use 3031 "zlib1.dll" and use the default __cdecl calling convention on Win32 3032 to conform with the standards mentioned here: 3033 http://www.zlib.net/DLL_FAQ.txt 3034 Static zlib linking now works on Windows and the new --with-zlib-include 3035 --with-zlib-lib options to Configure can be used to supply the location 3036 of the headers and library. Gracefully handle case where zlib library 3037 can't be loaded. 3038 [Steve Henson] 3039 3040 *) Several fixes and enhancements to the OID generation code. The old code 3041 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't 3042 handle numbers larger than ULONG_MAX, truncated printing and had a 3043 non standard OBJ_obj2txt() behaviour. 3044 [Steve Henson] 3045 3046 *) Add support for building of engines under engine/ as shared libraries 3047 under VC++ build system. 3048 [Steve Henson] 3049 3050 *) Corrected the numerous bugs in the Win32 path splitter in DSO. 3051 Hopefully, we will not see any false combination of paths any more. 3052 [Richard Levitte] 3053 3054 Changes between 0.9.8 and 0.9.8a [11 Oct 2005] 3055 3056 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING 3057 (part of SSL_OP_ALL). This option used to disable the 3058 countermeasure against man-in-the-middle protocol-version 3059 rollback in the SSL 2.0 server implementation, which is a bad 3060 idea. (CVE-2005-2969) 3061 3062 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center 3063 for Information Security, National Institute of Advanced Industrial 3064 Science and Technology [AIST], Japan)] 3065 3066 *) Add two function to clear and return the verify parameter flags. 3067 [Steve Henson] 3068 3069 *) Keep cipherlists sorted in the source instead of sorting them at 3070 runtime, thus removing the need for a lock. 3071 [Nils Larsch] 3072 3073 *) Avoid some small subgroup attacks in Diffie-Hellman. 3074 [Nick Mathewson and Ben Laurie] 3075 3076 *) Add functions for well-known primes. 3077 [Nick Mathewson] 3078 3079 *) Extended Windows CE support. 3080 [Satoshi Nakamura and Andy Polyakov] 3081 3082 *) Initialize SSL_METHOD structures at compile time instead of during 3083 runtime, thus removing the need for a lock. 3084 [Steve Henson] 3085 3086 *) Make PKCS7_decrypt() work even if no certificate is supplied by 3087 attempting to decrypt each encrypted key in turn. Add support to 3088 smime utility. 3089 [Steve Henson] 3090 3091 Changes between 0.9.7h and 0.9.8 [05 Jul 2005] 3092 3093 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after 3094 OpenSSL 0.9.8.] 3095 3096 *) Add libcrypto.pc and libssl.pc for those who feel they need them. 3097 [Richard Levitte] 3098 3099 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private 3100 key into the same file any more. 3101 [Richard Levitte] 3102 3103 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors. 3104 [Andy Polyakov] 3105 3106 *) Add -utf8 command line and config file option to 'ca'. 3107 [Stefan <stf (a] udoma.org] 3108 3109 *) Removed the macro des_crypt(), as it seems to conflict with some 3110 libraries. Use DES_crypt(). 3111 [Richard Levitte] 3112 3113 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This 3114 involves renaming the source and generated shared-libs for 3115 both. The engines will accept the corrected or legacy ids 3116 ('ncipher' and '4758_cca' respectively) when binding. NB, 3117 this only applies when building 'shared'. 3118 [Corinna Vinschen <vinschen (a] redhat.com> and Geoff Thorpe] 3119 3120 *) Add attribute functions to EVP_PKEY structure. Modify 3121 PKCS12_create() to recognize a CSP name attribute and 3122 use it. Make -CSP option work again in pkcs12 utility. 3123 [Steve Henson] 3124 3125 *) Add new functionality to the bn blinding code: 3126 - automatic re-creation of the BN_BLINDING parameters after 3127 a fixed number of uses (currently 32) 3128 - add new function for parameter creation 3129 - introduce flags to control the update behaviour of the 3130 BN_BLINDING parameters 3131 - hide BN_BLINDING structure 3132 Add a second BN_BLINDING slot to the RSA structure to improve 3133 performance when a single RSA object is shared among several 3134 threads. 3135 [Nils Larsch] 3136 3137 *) Add support for DTLS. 3138 [Nagendra Modadugu <nagendra (a] cs.stanford.edu> and Ben Laurie] 3139 3140 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1) 3141 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file() 3142 [Walter Goulet] 3143 3144 *) Remove buggy and incompletet DH cert support from 3145 ssl/ssl_rsa.c and ssl/s3_both.c 3146 [Nils Larsch] 3147 3148 *) Use SHA-1 instead of MD5 as the default digest algorithm for 3149 the apps/openssl applications. 3150 [Nils Larsch] 3151 3152 *) Compile clean with "-Wall -Wmissing-prototypes 3153 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently 3154 DEBUG_SAFESTACK must also be set. 3155 [Ben Laurie] 3156 3157 *) Change ./Configure so that certain algorithms can be disabled by default. 3158 The new counterpiece to "no-xxx" is "enable-xxx". 3159 3160 The patented RC5 and MDC2 algorithms will now be disabled unless 3161 "enable-rc5" and "enable-mdc2", respectively, are specified. 3162 3163 (IDEA remains enabled despite being patented. This is because IDEA 3164 is frequently required for interoperability, and there is no license 3165 fee for non-commercial use. As before, "no-idea" can be used to 3166 avoid this algorithm.) 3167 3168 [Bodo Moeller] 3169 3170 *) Add processing of proxy certificates (see RFC 3820). This work was 3171 sponsored by KTH (The Royal Institute of Technology in Stockholm) and 3172 EGEE (Enabling Grids for E-science in Europe). 3173 [Richard Levitte] 3174 3175 *) RC4 performance overhaul on modern architectures/implementations, such 3176 as Intel P4, IA-64 and AMD64. 3177 [Andy Polyakov] 3178 3179 *) New utility extract-section.pl. This can be used specify an alternative 3180 section number in a pod file instead of having to treat each file as 3181 a separate case in Makefile. This can be done by adding two lines to the 3182 pod file: 3183 3184 =for comment openssl_section:XXX 3185 3186 The blank line is mandatory. 3187 3188 [Steve Henson] 3189 3190 *) New arguments -certform, -keyform and -pass for s_client and s_server 3191 to allow alternative format key and certificate files and passphrase 3192 sources. 3193 [Steve Henson] 3194 3195 *) New structure X509_VERIFY_PARAM which combines current verify parameters, 3196 update associated structures and add various utility functions. 3197 3198 Add new policy related verify parameters, include policy checking in 3199 standard verify code. Enhance 'smime' application with extra parameters 3200 to support policy checking and print out. 3201 [Steve Henson] 3202 3203 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3 3204 Nehemiah processors. These extensions support AES encryption in hardware 3205 as well as RNG (though RNG support is currently disabled). 3206 [Michal Ludvig <michal (a] logix.cz>, with help from Andy Polyakov] 3207 3208 *) Deprecate BN_[get|set]_params() functions (they were ignored internally). 3209 [Geoff Thorpe] 3210 3211 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented. 3212 [Andy Polyakov and a number of other people] 3213 3214 *) Improved PowerPC platform support. Most notably BIGNUM assembler 3215 implementation contributed by IBM. 3216 [Suresh Chari, Peter Waltenberg, Andy Polyakov] 3217 3218 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public 3219 exponent rather than 'unsigned long'. There is a corresponding change to 3220 the new 'rsa_keygen' element of the RSA_METHOD structure. 3221 [Jelte Jansen, Geoff Thorpe] 3222 3223 *) Functionality for creating the initial serial number file is now 3224 moved from CA.pl to the 'ca' utility with a new option -create_serial. 3225 3226 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial 3227 number file to 1, which is bound to cause problems. To avoid 3228 the problems while respecting compatibility between different 0.9.7 3229 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in 3230 CA.pl for serial number initialization. With the new release 0.9.8, 3231 we can fix the problem directly in the 'ca' utility.) 3232 [Steve Henson] 3233 3234 *) Reduced header interdepencies by declaring more opaque objects in 3235 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will 3236 give fewer recursive includes, which could break lazy source code - so 3237 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always, 3238 developers should define this symbol when building and using openssl to 3239 ensure they track the recommended behaviour, interfaces, [etc], but 3240 backwards-compatible behaviour prevails when this isn't defined. 3241 [Geoff Thorpe] 3242 3243 *) New function X509_POLICY_NODE_print() which prints out policy nodes. 3244 [Steve Henson] 3245 3246 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality. 3247 This will generate a random key of the appropriate length based on the 3248 cipher context. The EVP_CIPHER can provide its own random key generation 3249 routine to support keys of a specific form. This is used in the des and 3250 3des routines to generate a key of the correct parity. Update S/MIME 3251 code to use new functions and hence generate correct parity DES keys. 3252 Add EVP_CHECK_DES_KEY #define to return an error if the key is not 3253 valid (weak or incorrect parity). 3254 [Steve Henson] 3255 3256 *) Add a local set of CRLs that can be used by X509_verify_cert() as well 3257 as looking them up. This is useful when the verified structure may contain 3258 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs 3259 present unless the new PKCS7_NO_CRL flag is asserted. 3260 [Steve Henson] 3261 3262 *) Extend ASN1 oid configuration module. It now additionally accepts the 3263 syntax: 3264 3265 shortName = some long name, 220.127.116.11 3266 [Steve Henson] 3267 3268 *) Reimplemented the BN_CTX implementation. There is now no more static 3269 limitation on the number of variables it can handle nor the depth of the 3270 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack 3271 information can now expand as required, and rather than having a single 3272 static array of bignums, BN_CTX now uses a linked-list of such arrays 3273 allowing it to expand on demand whilst maintaining the usefulness of 3274 BN_CTX's "bundling". 3275 [Geoff Thorpe] 3276 3277 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD 3278 to allow all RSA operations to function using a single BN_CTX. 3279 [Geoff Thorpe] 3280 3281 *) Preliminary support for certificate policy evaluation and checking. This 3282 is initially intended to pass the tests outlined in "Conformance Testing 3283 of Relying Party Client Certificate Path Processing Logic" v1.07. 3284 [Steve Henson] 3285 3286 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and 3287 remained unused and not that useful. A variety of other little bignum 3288 tweaks and fixes have also been made continuing on from the audit (see 3289 below). 3290 [Geoff Thorpe] 3291 3292 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with 3293 associated ASN1, EVP and SSL functions and old ASN1 macros. 3294 [Richard Levitte] 3295 3296 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results, 3297 and this should never fail. So the return value from the use of 3298 BN_set_word() (which can fail due to needless expansion) is now deprecated; 3299 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro. 3300 [Geoff Thorpe] 3301 3302 *) BN_CTX_get() should return zero-valued bignums, providing the same 3303 initialised value as BN_new(). 3304 [Geoff Thorpe, suggested by Ulf Mller] 3305 3306 *) Support for inhibitAnyPolicy certificate extension. 3307 [Steve Henson] 3308 3309 *) An audit of the BIGNUM code is underway, for which debugging code is 3310 enabled when BN_DEBUG is defined. This makes stricter enforcements on what 3311 is considered valid when processing BIGNUMs, and causes execution to 3312 assert() when a problem is discovered. If BN_DEBUG_RAND is defined, 3313 further steps are taken to deliberately pollute unused data in BIGNUM 3314 structures to try and expose faulty code further on. For now, openssl will 3315 (in its default mode of operation) continue to tolerate the inconsistent 3316 forms that it has tolerated in the past, but authors and packagers should 3317 consider trying openssl and their own applications when compiled with 3318 these debugging symbols defined. It will help highlight potential bugs in 3319 their own code, and will improve the test coverage for OpenSSL itself. At 3320 some point, these tighter rules will become openssl's default to improve 3321 maintainability, though the assert()s and other overheads will remain only 3322 in debugging configurations. See bn.h for more details. 3323 [Geoff Thorpe, Nils Larsch, Ulf Mller] 3324 3325 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure 3326 that can only be obtained through BN_CTX_new() (which implicitly 3327 initialises it). The presence of this function only made it possible 3328 to overwrite an existing structure (and cause memory leaks). 3329 [Geoff Thorpe] 3330 3331 *) Because of the callback-based approach for implementing LHASH as a 3332 template type, lh_insert() adds opaque objects to hash-tables and 3333 lh_doall() or lh_doall_arg() are typically used with a destructor callback 3334 to clean up those corresponding objects before destroying the hash table 3335 (and losing the object pointers). So some over-zealous constifications in 3336 LHASH have been relaxed so that lh_insert() does not take (nor store) the 3337 objects as "const" and the lh_doall[_arg] callback wrappers are not 3338 prototyped to have "const" restrictions on the object pointers they are 3339 given (and so aren't required to cast them away any more). 3340 [Geoff Thorpe] 3341 3342 *) The tmdiff.h API was so ugly and minimal that our own timing utility 3343 (speed) prefers to use its own implementation. The two implementations 3344 haven't been consolidated as yet (volunteers?) but the tmdiff API has had 3345 its object type properly exposed (MS_TM) instead of casting to/from "char 3346 *". This may still change yet if someone realises MS_TM and "ms_time_***" 3347 aren't necessarily the greatest nomenclatures - but this is what was used 3348 internally to the implementation so I've used that for now. 3349 [Geoff Thorpe] 3350 3351 *) Ensure that deprecated functions do not get compiled when 3352 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of 3353 the self-tests were still using deprecated key-generation functions so 3354 these have been updated also. 3355 [Geoff Thorpe] 3356 3357 *) Reorganise PKCS#7 code to separate the digest location functionality 3358 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest(). 3359 New function PKCS7_set_digest() to set the digest type for PKCS#7 3360 digestedData type. Add additional code to correctly generate the 3361 digestedData type and add support for this type in PKCS7 initialization 3362 functions. 3363 [Steve Henson] 3364 3365 *) New function PKCS7_set0_type_other() this initializes a PKCS7 3366 structure of type "other". 3367 [Steve Henson] 3368 3369 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making 3370 sure the loop does correctly stop and breaking ("division by zero") 3371 modulus operations are not performed. The (pre-generated) prime 3372 table crypto/bn/bn_prime.h was already correct, but it could not be 3373 re-generated on some platforms because of the "division by zero" 3374 situation in the script. 3375 [Ralf S. Engelschall] 3376 3377 *) Update support for ECC-based TLS ciphersuites according to 3378 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with 3379 SHA-1 now is only used for "small" curves (where the 3380 representation of a field element takes up to 24 bytes); for 3381 larger curves, the field element resulting from ECDH is directly 3382 used as premaster secret. 3383 [Douglas Stebila (Sun Microsystems Laboratories)] 3384 3385 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2 3386 curve secp160r1 to the tests. 3387 [Douglas Stebila (Sun Microsystems Laboratories)] 3388 3389 *) Add the possibility to load symbols globally with DSO. 3390 [Gtz Babin-Ebell <babin-ebell (a] trustcenter.de> via Richard Levitte] 3391 3392 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better 3393 control of the error stack. 3394 [Richard Levitte] 3395 3396 *) Add support for STORE in ENGINE. 3397 [Richard Levitte] 3398 3399 *) Add the STORE type. The intention is to provide a common interface 3400 to certificate and key stores, be they simple file-based stores, or 3401 HSM-type store, or LDAP stores, or... 3402 NOTE: The code is currently UNTESTED and isn't really used anywhere. 3403 [Richard Levitte] 3404 3405 *) Add a generic structure called OPENSSL_ITEM. This can be used to 3406 pass a list of arguments to any function as well as provide a way 3407 for a function to pass data back to the caller. 3408 [Richard Levitte] 3409 3410 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup() 3411 works like BUF_strdup() but can be used to duplicate a portion of 3412 a string. The copy gets NUL-terminated. BUF_memdup() duplicates 3413 a memory area. 3414 [Richard Levitte] 3415 3416 *) Add the function sk_find_ex() which works like sk_find(), but will 3417 return an index to an element even if an exact match couldn't be 3418 found. The index is guaranteed to point at the element where the 3419 searched-for key would be inserted to preserve sorting order. 3420 [Richard Levitte] 3421 3422 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but 3423 takes an extra flags argument for optional functionality. Currently, 3424 the following flags are defined: 3425 3426 OBJ_BSEARCH_VALUE_ON_NOMATCH 3427 This one gets OBJ_bsearch_ex() to return a pointer to the first 3428 element where the comparing function returns a negative or zero 3429 number. 3430 3431 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH 3432 This one gets OBJ_bsearch_ex() to return a pointer to the first 3433 element where the comparing function returns zero. This is useful 3434 if there are more than one element where the comparing function 3435 returns zero. 3436 [Richard Levitte] 3437 3438 *) Make it possible to create self-signed certificates with 'openssl ca' 3439 in such a way that the self-signed certificate becomes part of the 3440 CA database and uses the same mechanisms for serial number generation 3441 as all other certificate signing. The new flag '-selfsign' enables 3442 this functionality. Adapt CA.sh and CA.pl.in. 3443 [Richard Levitte] 3444 3445 *) Add functionality to check the public key of a certificate request 3446 against a given private. This is useful to check that a certificate 3447 request can be signed by that key (self-signing). 3448 [Richard Levitte] 3449 3450 *) Make it possible to have multiple active certificates with the same 3451 subject in the CA index file. This is done only if the keyword 3452 'unique_subject' is set to 'no' in the main CA section (default 3453 if 'CA_default') of the configuration file. The value is saved 3454 with the database itself in a separate index attribute file, 3455 named like the index file with '.attr' appended to the name. 3456 [Richard Levitte] 3457 3458 *) Generate muti valued AVAs using '+' notation in config files for 3459 req and dirName. 3460 [Steve Henson] 3461 3462 *) Support for nameConstraints certificate extension. 3463 [Steve Henson] 3464 3465 *) Support for policyConstraints certificate extension. 3466 [Steve Henson] 3467 3468 *) Support for policyMappings certificate extension. 3469 [Steve Henson] 3470 3471 *) Make sure the default DSA_METHOD implementation only uses its 3472 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL, 3473 and change its own handlers to be NULL so as to remove unnecessary 3474 indirection. This lets alternative implementations fallback to the 3475 default implementation more easily. 3476 [Geoff Thorpe] 3477 3478 *) Support for directoryName in GeneralName related extensions 3479 in config files. 3480 [Steve Henson] 3481 3482 *) Make it possible to link applications using Makefile.shared. 3483 Make that possible even when linking against static libraries! 3484 [Richard Levitte] 3485 3486 *) Support for single pass processing for S/MIME signing. This now 3487 means that S/MIME signing can be done from a pipe, in addition 3488 cleartext signing (multipart/signed type) is effectively streaming 3489 and the signed data does not need to be all held in memory. 3490 3491 This is done with a new flag PKCS7_STREAM. When this flag is set 3492 PKCS7_sign() only initializes the PKCS7 structure and the actual signing 3493 is done after the data is output (and digests calculated) in 3494 SMIME_write_PKCS7(). 3495 [Steve Henson] 3496 3497 *) Add full support for -rpath/-R, both in shared libraries and 3498 applications, at least on the platforms where it's known how 3499 to do it. 3500 [Richard Levitte] 3501 3502 *) In crypto/ec/ec_mult.c, implement fast point multiplication with 3503 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult() 3504 will now compute a table of multiples of the generator that 3505 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul() 3506 faster (notably in the case of a single point multiplication, 3507 scalar * generator). 3508 [Nils Larsch, Bodo Moeller] 3509 3510 *) IPv6 support for certificate extensions. The various extensions 3511 which use the IP:a.b.c.d can now take IPv6 addresses using the 3512 formats of RFC1884 2.2 . IPv6 addresses are now also displayed 3513 correctly. 3514 [Steve Henson] 3515 3516 *) Added an ENGINE that implements RSA by performing private key 3517 exponentiations with the GMP library. The conversions to and from 3518 GMP's mpz_t format aren't optimised nor are any montgomery forms 3519 cached, and on x86 it appears OpenSSL's own performance has caught up. 3520 However there are likely to be other architectures where GMP could 3521 provide a boost. This ENGINE is not built in by default, but it can be 3522 specified at Configure time and should be accompanied by the necessary 3523 linker additions, eg; 3524 ./config -DOPENSSL_USE_GMP -lgmp 3525 [Geoff Thorpe] 3526 3527 *) "openssl engine" will not display ENGINE/DSO load failure errors when 3528 testing availability of engines with "-t" - the old behaviour is 3529 produced by increasing the feature's verbosity with "-tt". 3530 [Geoff Thorpe] 3531 3532 *) ECDSA routines: under certain error conditions uninitialized BN objects 3533 could be freed. Solution: make sure initialization is performed early 3534 enough. (Reported and fix supplied by Nils Larsch <nla (a] trustcenter.de> 3535 via PR#459) 3536 [Lutz Jaenicke] 3537 3538 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD 3539 and DH_METHOD (eg. by ENGINE implementations) to override the normal 3540 software implementations. For DSA and DH, parameter generation can 3541 also be overriden by providing the appropriate method callbacks. 3542 [Geoff Thorpe] 3543 3544 *) Change the "progress" mechanism used in key-generation and 3545 primality testing to functions that take a new BN_GENCB pointer in 3546 place of callback/argument pairs. The new API functions have "_ex" 3547 postfixes and the older functions are reimplemented as wrappers for 3548 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide 3549 declarations of the old functions to help (graceful) attempts to 3550 migrate to the new functions. Also, the new key-generation API 3551 functions operate on a caller-supplied key-structure and return 3552 success/failure rather than returning a key or NULL - this is to 3553 help make "keygen" another member function of RSA_METHOD etc. 3554 3555 Example for using the new callback interface: 3556 3557 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...; 3558 void *my_arg = ...; 3559 BN_GENCB my_cb; 3560 3561 BN_GENCB_set(&my_cb, my_callback, my_arg); 3562 3563 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb); 3564 /* For the meaning of a, b in calls to my_callback(), see the 3565 * documentation of the function that calls the callback. 3566 * cb will point to my_cb; my_arg can be retrieved as cb->arg. 3567 * my_callback should return 1 if it wants BN_is_prime_ex() 3568 * to continue, or 0 to stop. 3569 */ 3570 3571 [Geoff Thorpe] 3572 3573 *) Change the ZLIB compression method to be stateful, and make it 3574 available to TLS with the number defined in 3575 draft-ietf-tls-compression-04.txt. 3576 [Richard Levitte] 3577 3578 *) Add the ASN.1 structures and functions for CertificatePair, which 3579 is defined as follows (according to X.509_4thEditionDraftV6.pdf): 3580 3581 CertificatePair ::= SEQUENCE { 3582 forward [0] Certificate OPTIONAL, 3583 reverse [1] Certificate OPTIONAL, 3584 -- at least one of the pair shall be present -- } 3585 3586 Also implement the PEM functions to read and write certificate 3587 pairs, and defined the PEM tag as "CERTIFICATE PAIR". 3588 3589 This needed to be defined, mostly for the sake of the LDAP 3590 attribute crossCertificatePair, but may prove useful elsewhere as 3591 well. 3592 [Richard Levitte] 3593 3594 *) Make it possible to inhibit symlinking of shared libraries in 3595 Makefile.shared, for Cygwin's sake. 3596 [Richard Levitte] 3597 3598 *) Extend the BIGNUM API by creating a function 3599 void BN_set_negative(BIGNUM *a, int neg); 3600 and a macro that behave like 3601 int BN_is_negative(const BIGNUM *a); 3602 3603 to avoid the need to access 'a->neg' directly in applications. 3604 [Nils Larsch] 3605 3606 *) Implement fast modular reduction for pseudo-Mersenne primes 3607 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c). 3608 EC_GROUP_new_curve_GFp() will now automatically use this 3609 if applicable. 3610 [Nils Larsch <nla (a] trustcenter.de>] 3611 3612 *) Add new lock type (CRYPTO_LOCK_BN). 3613 [Bodo Moeller] 3614 3615 *) Change the ENGINE framework to automatically load engines 3616 dynamically from specific directories unless they could be 3617 found to already be built in or loaded. Move all the 3618 current engines except for the cryptodev one to a new 3619 directory engines/. 3620 The engines in engines/ are built as shared libraries if 3621 the "shared" options was given to ./Configure or ./config. 3622 Otherwise, they are inserted in libcrypto.a. 3623 /usr/local/ssl/engines is the default directory for dynamic 3624 engines, but that can be overriden at configure time through 3625 the usual use of --prefix and/or --openssldir, and at run 3626 time with the environment variable OPENSSL_ENGINES. 3627 [Geoff Thorpe and Richard Levitte] 3628 3629 *) Add Makefile.shared, a helper makefile to build shared 3630 libraries. Addapt Makefile.org. 3631 [Richard Levitte] 3632 3633 *) Add version info to Win32 DLLs. 3634 [Peter 'Luna' Runestig" <peter (a] runestig.com>] 3635 3636 *) Add new 'medium level' PKCS#12 API. Certificates and keys 3637 can be added using this API to created arbitrary PKCS#12 3638 files while avoiding the low level API. 3639 3640 New options to PKCS12_create(), key or cert can be NULL and 3641 will then be omitted from the output file. The encryption 3642 algorithm NIDs can be set to -1 for no encryption, the mac 3643 iteration count can be set to 0 to omit the mac. 3644 3645 Enhance pkcs12 utility by making the -nokeys and -nocerts 3646 options work when creating a PKCS#12 file. New option -nomac 3647 to omit the mac, NONE can be set for an encryption algorithm. 3648 New code is modified to use the enhanced PKCS12_create() 3649 instead of the low level API. 3650 [Steve Henson] 3651 3652 *) Extend ASN1 encoder to support indefinite length constructed 3653 encoding. This can output sequences tags and octet strings in 3654 this form. Modify pk7_asn1.c to support indefinite length 3655 encoding. This is experimental and needs additional code to 3656 be useful, such as an ASN1 bio and some enhanced streaming 3657 PKCS#7 code. 3658 3659 Extend template encode functionality so that tagging is passed 3660 down to the template encoder. 3661 [Steve Henson] 3662 3663 *) Let 'openssl req' fail if an argument to '-newkey' is not 3664 recognized instead of using RSA as a default. 3665 [Bodo Moeller] 3666 3667 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt. 3668 As these are not official, they are not included in "ALL"; 3669 the "ECCdraft" ciphersuite group alias can be used to select them. 3670 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)] 3671 3672 *) Add ECDH engine support. 3673 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)] 3674 3675 *) Add ECDH in new directory crypto/ecdh/. 3676 [Douglas Stebila (Sun Microsystems Laboratories)] 3677 3678 *) Let BN_rand_range() abort with an error after 100 iterations 3679 without success (which indicates a broken PRNG). 3680 [Bodo Moeller] 3681 3682 *) Change BN_mod_sqrt() so that it verifies that the input value 3683 is really the square of the return value. (Previously, 3684 BN_mod_sqrt would show GIGO behaviour.) 3685 [Bodo Moeller] 3686 3687 *) Add named elliptic curves over binary fields from X9.62, SECG, 3688 and WAP/WTLS; add OIDs that were still missing. 3689 3690 [Sheueling Chang Shantz and Douglas Stebila 3691 (Sun Microsystems Laboratories)] 3692 3693 *) Extend the EC library for elliptic curves over binary fields 3694 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/). 3695 New EC_METHOD: 3696 3697 EC_GF2m_simple_method 3698 3699 New API functions: 3700 3701 EC_GROUP_new_curve_GF2m 3702 EC_GROUP_set_curve_GF2m 3703 EC_GROUP_get_curve_GF2m 3704 EC_POINT_set_affine_coordinates_GF2m 3705 EC_POINT_get_affine_coordinates_GF2m 3706 EC_POINT_set_compressed_coordinates_GF2m 3707 3708 Point compression for binary fields is disabled by default for 3709 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to 3710 enable it). 3711 3712 As binary polynomials are represented as BIGNUMs, various members 3713 of the EC_GROUP and EC_POINT data structures can be shared 3714 between the implementations for prime fields and binary fields; 3715 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m) 3716 are essentially identical to their ..._GFp counterparts. 3717 (For simplicity, the '..._GFp' prefix has been dropped from 3718 various internal method names.) 3719 3720 An internal 'field_div' method (similar to 'field_mul' and 3721 'field_sqr') has been added; this is used only for binary fields. 3722 3723 [Sheueling Chang Shantz and Douglas Stebila 3724 (Sun Microsystems Laboratories)] 3725 3726 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult() 3727 through methods ('mul', 'precompute_mult'). 3728 3729 The generic implementations (now internally called 'ec_wNAF_mul' 3730 and 'ec_wNAF_precomputed_mult') remain the default if these 3731 methods are undefined. 3732 3733 [Sheueling Chang Shantz and Douglas Stebila 3734 (Sun Microsystems Laboratories)] 3735 3736 *) New function EC_GROUP_get_degree, which is defined through 3737 EC_METHOD. For curves over prime fields, this returns the bit 3738 length of the modulus. 3739 3740 [Sheueling Chang Shantz and Douglas Stebila 3741 (Sun Microsystems Laboratories)] 3742 3743 *) New functions EC_GROUP_dup, EC_POINT_dup. 3744 (These simply call ..._new and ..._copy). 3745 3746 [Sheueling Chang Shantz and Douglas Stebila 3747 (Sun Microsystems Laboratories)] 3748 3749 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c. 3750 Polynomials are represented as BIGNUMs (where the sign bit is not 3751 used) in the following functions [macros]: 3752 3753 BN_GF2m_add 3754 BN_GF2m_sub [= BN_GF2m_add] 3755 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr] 3756 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr] 3757 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr] 3758 BN_GF2m_mod_inv 3759 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr] 3760 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr] 3761 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr] 3762 BN_GF2m_cmp [= BN_ucmp] 3763 3764 (Note that only the 'mod' functions are actually for fields GF(2^m). 3765 BN_GF2m_add() is misnomer, but this is for the sake of consistency.) 3766 3767 For some functions, an the irreducible polynomial defining a 3768 field can be given as an 'unsigned int[]' with strictly 3769 decreasing elements giving the indices of those bits that are set; 3770 i.e., p[] represents the polynomial 3771 f(t) = t^p[0] + t^p[1] + ... + t^p[k] 3772 where 3773 p[0] > p[1] > ... > p[k] = 0. 3774 This applies to the following functions: 3775 3776 BN_GF2m_mod_arr 3777 BN_GF2m_mod_mul_arr 3778 BN_GF2m_mod_sqr_arr 3779 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv] 3780 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div] 3781 BN_GF2m_mod_exp_arr 3782 BN_GF2m_mod_sqrt_arr 3783 BN_GF2m_mod_solve_quad_arr 3784 BN_GF2m_poly2arr 3785 BN_GF2m_arr2poly 3786 3787 Conversion can be performed by the following functions: 3788 3789 BN_GF2m_poly2arr 3790 BN_GF2m_arr2poly 3791 3792 bntest.c has additional tests for binary polynomial arithmetic. 3793 3794 Two implementations for BN_GF2m_mod_div() are available. 3795 The default algorithm simply uses BN_GF2m_mod_inv() and 3796 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only 3797 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the 3798 copyright notice in crypto/bn/bn_gf2m.c before enabling it). 3799 3800 [Sheueling Chang Shantz and Douglas Stebila 3801 (Sun Microsystems Laboratories)] 3802 3803 *) Add new error code 'ERR_R_DISABLED' that can be used when some 3804 functionality is disabled at compile-time. 3805 [Douglas Stebila <douglas.stebila (a] sun.com>] 3806 3807 *) Change default behaviour of 'openssl asn1parse' so that more 3808 information is visible when viewing, e.g., a certificate: 3809 3810 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump' 3811 mode the content of non-printable OCTET STRINGs is output in a 3812 style similar to INTEGERs, but with '[HEX DUMP]' prepended to 3813 avoid the appearance of a printable string. 3814 [Nils Larsch <nla (a] trustcenter.de>] 3815 3816 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access 3817 functions 3818 EC_GROUP_set_asn1_flag() 3819 EC_GROUP_get_asn1_flag() 3820 EC_GROUP_set_point_conversion_form() 3821 EC_GROUP_get_point_conversion_form() 3822 These control ASN1 encoding details: 3823 - Curves (i.e., groups) are encoded explicitly unless asn1_flag 3824 has been set to OPENSSL_EC_NAMED_CURVE. 3825 - Points are encoded in uncompressed form by default; options for 3826 asn1_for are as for point2oct, namely 3827 POINT_CONVERSION_COMPRESSED 3828 POINT_CONVERSION_UNCOMPRESSED 3829 POINT_CONVERSION_HYBRID 3830 3831 Also add 'seed' and 'seed_len' members to EC_GROUP with access 3832 functions 3833 EC_GROUP_set_seed() 3834 EC_GROUP_get0_seed() 3835 EC_GROUP_get_seed_len() 3836 This is used only for ASN1 purposes (so far). 3837 [Nils Larsch <nla (a] trustcenter.de>] 3838 3839 *) Add 'field_type' member to EC_METHOD, which holds the NID 3840 of the appropriate field type OID. The new function 3841 EC_METHOD_get_field_type() returns this value. 3842 [Nils Larsch <nla (a] trustcenter.de>] 3843 3844 *) Add functions 3845 EC_POINT_point2bn() 3846 EC_POINT_bn2point() 3847 EC_POINT_point2hex() 3848 EC_POINT_hex2point() 3849 providing useful interfaces to EC_POINT_point2oct() and 3850 EC_POINT_oct2point(). 3851 [Nils Larsch <nla (a] trustcenter.de>] 3852 3853 *) Change internals of the EC library so that the functions 3854 EC_GROUP_set_generator() 3855 EC_GROUP_get_generator() 3856 EC_GROUP_get_order() 3857 EC_GROUP_get_cofactor() 3858 are implemented directly in crypto/ec/ec_lib.c and not dispatched 3859 to methods, which would lead to unnecessary code duplication when 3860 adding different types of curves. 3861 [Nils Larsch <nla (a] trustcenter.de> with input by Bodo Moeller] 3862 3863 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM 3864 arithmetic, and such that modified wNAFs are generated 3865 (which avoid length expansion in many cases). 3866 [Bodo Moeller] 3867 3868 *) Add a function EC_GROUP_check_discriminant() (defined via 3869 EC_METHOD) that verifies that the curve discriminant is non-zero. 3870 3871 Add a function EC_GROUP_check() that makes some sanity tests 3872 on a EC_GROUP, its generator and order. This includes 3873 EC_GROUP_check_discriminant(). 3874 [Nils Larsch <nla (a] trustcenter.de>] 3875 3876 *) Add ECDSA in new directory crypto/ecdsa/. 3877 3878 Add applications 'openssl ecparam' and 'openssl ecdsa' 3879 (these are based on 'openssl dsaparam' and 'openssl dsa'). 3880 3881 ECDSA support is also included in various other files across the 3882 library. Most notably, 3883 - 'openssl req' now has a '-newkey ecdsa:file' option; 3884 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA; 3885 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and 3886 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make 3887 them suitable for ECDSA where domain parameters must be 3888 extracted before the specific public key; 3889 - ECDSA engine support has been added. 3890 [Nils Larsch <nla (a] trustcenter.de>] 3891 3892 *) Include some named elliptic curves, and add OIDs from X9.62, 3893 SECG, and WAP/WTLS. Each curve can be obtained from the new 3894 function 3895 EC_GROUP_new_by_curve_name(), 3896 and the list of available named curves can be obtained with 3897 EC_get_builtin_curves(). 3898 Also add a 'curve_name' member to EC_GROUP objects, which can be 3899 accessed via 3900 EC_GROUP_set_curve_name() 3901 EC_GROUP_get_curve_name() 3902 [Nils Larsch <larsch (a] trustcenter.de, Bodo Moeller] 3903 3904 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there 3905 was actually never needed) and in BN_mul(). The removal in BN_mul() 3906 required a small change in bn_mul_part_recursive() and the addition 3907 of the functions bn_cmp_part_words(), bn_sub_part_words() and 3908 bn_add_part_words(), which do the same thing as bn_cmp_words(), 3909 bn_sub_words() and bn_add_words() except they take arrays with 3910 differing sizes. 3911 [Richard Levitte] 3912 3913 Changes between 0.9.7l and 0.9.7m [23 Feb 2007] 3914 3915 *) Cleanse PEM buffers before freeing them since they may contain 3916 sensitive data. 3917 [Benjamin Bennett <ben (a] psc.edu>] 3918 3919 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that 3920 a ciphersuite string such as "DEFAULT:RSA" cannot enable 3921 authentication-only ciphersuites. 3922 [Bodo Moeller] 3923 3924 *) Since AES128 and AES256 share a single mask bit in the logic of 3925 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a 3926 kludge to work properly if AES128 is available and AES256 isn't. 3927 [Victor Duchovni] 3928 3929 *) Expand security boundary to match 1.1.1 module. 3930 [Steve Henson] 3931 3932 *) Remove redundant features: hash file source, editing of test vectors 3933 modify fipsld to use external fips_premain.c signature. 3934 [Steve Henson] 3935 3936 *) New perl script mkfipsscr.pl to create shell scripts or batch files to 3937 run algorithm test programs. 3938 [Steve Henson] 3939 3940 *) Make algorithm test programs more tolerant of whitespace. 3941 [Steve Henson] 3942 3943 *) Have SSL/TLS server implementation tolerate "mismatched" record 3944 protocol version while receiving ClientHello even if the 3945 ClientHello is fragmented. (The server can't insist on the 3946 particular protocol version it has chosen before the ServerHello 3947 message has informed the client about his choice.) 3948 [Bodo Moeller] 3949 3950 *) Load error codes if they are not already present instead of using a 3951 static variable. This allows them to be cleanly unloaded and reloaded. 3952 [Steve Henson] 3953 3954 Changes between 0.9.7k and 0.9.7l [28 Sep 2006] 3955 3956 *) Introduce limits to prevent malicious keys being able to 3957 cause a denial of service. (CVE-2006-2940) 3958 [Steve Henson, Bodo Moeller] 3959 3960 *) Fix ASN.1 parsing of certain invalid structures that can result 3961 in a denial of service. (CVE-2006-2937) [Steve Henson] 3962 3963 *) Fix buffer overflow in SSL_get_shared_ciphers() function. 3964 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team] 3965 3966 *) Fix SSL client code which could crash if connecting to a 3967 malicious SSLv2 server. (CVE-2006-4343) 3968 [Tavis Ormandy and Will Drewry, Google Security Team] 3969 3970 *) Change ciphersuite string processing so that an explicit 3971 ciphersuite selects this one ciphersuite (so that "AES256-SHA" 3972 will no longer include "AES128-SHA"), and any other similar 3973 ciphersuite (same bitmap) from *other* protocol versions (so that 3974 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the 3975 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining 3976 changes from 0.9.8b and 0.9.8d. 3977 [Bodo Moeller] 3978 3979 Changes between 0.9.7j and 0.9.7k [05 Sep 2006] 3980 3981 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher 3982 (CVE-2006-4339) [Ben Laurie and Google Security Team] 3983 3984 *) Change the Unix randomness entropy gathering to use poll() when 3985 possible instead of select(), since the latter has some 3986 undesirable limitations. 3987 [Darryl Miles via Richard Levitte and Bodo Moeller] 3988 3989 *) Disable rogue ciphersuites: 3990 3991 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5") 3992 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5") 3993 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5") 3994 3995 The latter two were purportedly from 3996 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really 3997 appear there. 3998 3999 Also deactive the remaining ciphersuites from 4000 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as 4001 unofficial, and the ID has long expired. 4002 [Bodo Moeller] 4003 4004 *) Fix RSA blinding Heisenbug (problems sometimes occured on 4005 dual-core machines) and other potential thread-safety issues. 4006 [Bodo Moeller] 4007 4008 Changes between 0.9.7i and 0.9.7j [04 May 2006] 4009 4010 *) Adapt fipsld and the build system to link against the validated FIPS 4011 module in FIPS mode. 4012 [Steve Henson] 4013 4014 *) Fixes for VC++ 2005 build under Windows. 4015 [Steve Henson] 4016 4017 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make 4018 from a Windows bash shell such as MSYS. It is autodetected from the 4019 "config" script when run from a VC++ environment. Modify standard VC++ 4020 build to use fipscanister.o from the GNU make build. 4021 [Steve Henson] 4022 4023 Changes between 0.9.7h and 0.9.7i [14 Oct 2005] 4024 4025 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS. 4026 The value now differs depending on if you build for FIPS or not. 4027 BEWARE! A program linked with a shared FIPSed libcrypto can't be 4028 safely run with a non-FIPSed libcrypto, as it may crash because of 4029 the difference induced by this change. 4030 [Andy Polyakov] 4031 4032 Changes between 0.9.7g and 0.9.7h [11 Oct 2005] 4033 4034 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING 4035 (part of SSL_OP_ALL). This option used to disable the 4036 countermeasure against man-in-the-middle protocol-version 4037 rollback in the SSL 2.0 server implementation, which is a bad 4038 idea. (CVE-2005-2969) 4039 4040 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center 4041 for Information Security, National Institute of Advanced Industrial 4042 Science and Technology [AIST], Japan)] 4043 4044 *) Minimal support for X9.31 signatures and PSS padding modes. This is 4045 mainly for FIPS compliance and not fully integrated at this stage. 4046 [Steve Henson] 4047 4048 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform 4049 the exponentiation using a fixed-length exponent. (Otherwise, 4050 the information leaked through timing could expose the secret key 4051 after many signatures; cf. Bleichenbacher's attack on DSA with 4052 biased k.) 4053 [Bodo Moeller] 4054 4055 *) Make a new fixed-window mod_exp implementation the default for 4056 RSA, DSA, and DH private-key operations so that the sequence of 4057 squares and multiplies and the memory access pattern are 4058 independent of the particular secret key. This will mitigate 4059 cache-timing and potential related attacks. 4060 4061 BN_mod_exp_mont_consttime() is the new exponentiation implementation, 4062 and this is automatically used by BN_mod_exp_mont() if the new flag 4063 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH 4064 will use this BN flag for private exponents unless the flag 4065 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or 4066 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set. 4067 4068 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller] 4069 4070 *) Change the client implementation for SSLv23_method() and 4071 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0 4072 Client Hello message format if the SSL_OP_NO_SSLv2 option is set. 4073 (Previously, the SSL 2.0 backwards compatible Client Hello 4074 message format would be used even with SSL_OP_NO_SSLv2.) 4075 [Bodo Moeller] 4076 4077 *) Add support for smime-type MIME parameter in S/MIME messages which some 4078 clients need. 4079 [Steve Henson] 4080 4081 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in 4082 a threadsafe manner. Modify rsa code to use new function and add calls 4083 to dsa and dh code (which had race conditions before). 4084 [Steve Henson] 4085 4086 *) Include the fixed error library code in the C error file definitions 4087 instead of fixing them up at runtime. This keeps the error code 4088 structures constant. 4089 [Steve Henson] 4090 4091 Changes between 0.9.7f and 0.9.7g [11 Apr 2005] 4092 4093 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after 4094 OpenSSL 0.9.8.] 4095 4096 *) Fixes for newer kerberos headers. NB: the casts are needed because 4097 the 'length' field is signed on one version and unsigned on another 4098 with no (?) obvious way to tell the difference, without these VC++ 4099 complains. Also the "definition" of FAR (blank) is no longer included 4100 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up 4101 some needed definitions. 4102 [Steve Henson] 4103 4104 *) Undo Cygwin change. 4105 [Ulf Mller] 4106 4107 *) Added support for proxy certificates according to RFC 3820. 4108 Because they may be a security thread to unaware applications, 4109 they must be explicitely allowed in run-time. See 4110 docs/HOWTO/proxy_certificates.txt for further information. 4111 [Richard Levitte] 4112 4113 Changes between 0.9.7e and 0.9.7f [22 Mar 2005] 4114 4115 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating 4116 server and client random values. Previously 4117 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in 4118 less random data when sizeof(time_t) > 4 (some 64 bit platforms). 4119 4120 This change has negligible security impact because: 4121 4122 1. Server and client random values still have 24 bytes of pseudo random 4123 data. 4124 4125 2. Server and client random values are sent in the clear in the initial 4126 handshake. 4127 4128 3. The master secret is derived using the premaster secret (48 bytes in 4129 size for static RSA ciphersuites) as well as client server and random 4130 values. 4131 4132 The OpenSSL team would like to thank the UK NISCC for bringing this issue 4133 to our attention. 4134 4135 [Stephen Henson, reported by UK NISCC] 4136 4137 *) Use Windows randomness collection on Cygwin. 4138 [Ulf Mller] 4139 4140 *) Fix hang in EGD/PRNGD query when communication socket is closed 4141 prematurely by EGD/PRNGD. 4142 [Darren Tucker <dtucker (a] zip.com.au> via Lutz Jnicke, resolves #1014] 4143 4144 *) Prompt for pass phrases when appropriate for PKCS12 input format. 4145 [Steve Henson] 4146 4147 *) Back-port of selected performance improvements from development 4148 branch, as well as improved support for PowerPC platforms. 4149 [Andy Polyakov] 4150 4151 *) Add lots of checks for memory allocation failure, error codes to indicate 4152 failure and freeing up memory if a failure occurs. 4153 [Nauticus Networks SSL Team <openssl (a] nauticusnet.com>, Steve Henson] 4154 4155 *) Add new -passin argument to dgst. 4156 [Steve Henson] 4157 4158 *) Perform some character comparisons of different types in X509_NAME_cmp: 4159 this is needed for some certificates that reencode DNs into UTF8Strings 4160 (in violation of RFC3280) and can't or wont issue name rollover 4161 certificates. 4162 [Steve Henson] 4163 4164 *) Make an explicit check during certificate validation to see that 4165 the CA setting in each certificate on the chain is correct. As a 4166 side effect always do the following basic checks on extensions, 4167 not just when there's an associated purpose to the check: 4168 4169 - if there is an unhandled critical extension (unless the user 4170 has chosen to ignore this fault) 4171 - if the path length has been exceeded (if one is set at all) 4172 - that certain extensions fit the associated purpose (if one has 4173 been given) 4174 [Richard Levitte] 4175 4176 Changes between 0.9.7d and 0.9.7e [25 Oct 2004] 4177 4178 *) Avoid a race condition when CRLs are checked in a multi threaded 4179 environment. This would happen due to the reordering of the revoked 4180 entries during signature checking and serial number lookup. Now the 4181 encoding is cached and the serial number sort performed under a lock. 4182 Add new STACK function sk_is_sorted(). 4183 [Steve Henson] 4184 4185 *) Add Delta CRL to the extension code. 4186 [Steve Henson] 4187 4188 *) Various fixes to s3_pkt.c so alerts are sent properly. 4189 [David Holmes <d.holmes (a] f5.com>] 4190 4191 *) Reduce the chances of duplicate issuer name and serial numbers (in 4192 violation of RFC3280) using the OpenSSL certificate creation utilities. 4193 This is done by creating a random 64 bit value for the initial serial 4194 number when a serial number file is created or when a self signed 4195 certificate is created using 'openssl req -x509'. The initial serial 4196 number file is created using 'openssl x509 -next_serial' in CA.pl 4197 rather than being initialized to 1. 4198 [Steve Henson] 4199 4200 Changes between 0.9.7c and 0.9.7d [17 Mar 2004] 4201 4202 *) Fix null-pointer assignment in do_change_cipher_spec() revealed 4203 by using the Codenomicon TLS Test Tool (CVE-2004-0079) 4204 [Joe Orton, Steve Henson] 4205 4206 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites 4207 (CVE-2004-0112) 4208 [Joe Orton, Steve Henson] 4209 4210 *) Make it possible to have multiple active certificates with the same 4211 subject in the CA index file. This is done only if the keyword 4212 'unique_subject' is set to 'no' in the main CA section (default 4213 if 'CA_default') of the configuration file. The value is saved 4214 with the database itself in a separate index attribute file, 4215 named like the index file with '.attr' appended to the name. 4216 [Richard Levitte] 4217 4218 *) X509 verify fixes. Disable broken certificate workarounds when 4219 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if 4220 keyUsage extension present. Don't accept CRLs with unhandled critical 4221 extensions: since verify currently doesn't process CRL extensions this 4222 rejects a CRL with *any* critical extensions. Add new verify error codes 4223 for these cases. 4224 [Steve Henson] 4225 4226 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue. 4227 A clarification of RFC2560 will require the use of OCTET STRINGs and 4228 some implementations cannot handle the current raw format. Since OpenSSL 4229 copies and compares OCSP nonces as opaque blobs without any attempt at 4230 parsing them this should not create any compatibility issues. 4231 [Steve Henson] 4232 4233 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when 4234 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without 4235 this HMAC (and other) operations are several times slower than OpenSSL 4236 < 0.9.7. 4237 [Steve Henson] 4238 4239 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex(). 4240 [Peter Sylvester <Peter.Sylvester (a] EdelWeb.fr>] 4241 4242 *) Use the correct content when signing type "other". 4243 [Steve Henson] 4244 4245 Changes between 0.9.7b and 0.9.7c [30 Sep 2003] 4246 4247 *) Fix various bugs revealed by running the NISCC test suite: 4248 4249 Stop out of bounds reads in the ASN1 code when presented with 4250 invalid tags (CVE-2003-0543 and CVE-2003-0544). 4251 4252 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545). 4253 4254 If verify callback ignores invalid public key errors don't try to check 4255 certificate signature with the NULL public key. 4256 4257 [Steve Henson] 4258 4259 *) New -ignore_err option in ocsp application to stop the server 4260 exiting on the first error in a request. 4261 [Steve Henson] 4262 4263 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate 4264 if the server requested one: as stated in TLS 1.0 and SSL 3.0 4265 specifications. 4266 [Steve Henson] 4267 4268 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional 4269 extra data after the compression methods not only for TLS 1.0 4270 but also for SSL 3.0 (as required by the specification). 4271 [Bodo Moeller; problem pointed out by Matthias Loepfe] 4272 4273 *) Change X509_certificate_type() to mark the key as exported/exportable 4274 when it's 512 *bits* long, not 512 bytes. 4275 [Richard Levitte] 4276 4277 *) Change AES_cbc_encrypt() so it outputs exact multiple of 4278 blocks during encryption. 4279 [Richard Levitte] 4280 4281 *) Various fixes to base64 BIO and non blocking I/O. On write 4282 flushes were not handled properly if the BIO retried. On read 4283 data was not being buffered properly and had various logic bugs. 4284 This also affects blocking I/O when the data being decoded is a 4285 certain size. 4286 [Steve Henson] 4287 4288 *) Various S/MIME bugfixes and compatibility changes: 4289 output correct application/pkcs7 MIME type if 4290 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures. 4291 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening 4292 of files as .eml work). Correctly handle very long lines in MIME 4293 parser. 4294 [Steve Henson] 4295 4296 Changes between 0.9.7a and 0.9.7b [10 Apr 2003] 4297 4298 *) Countermeasure against the Klima-Pokorny-Rosa extension of 4299 Bleichbacher's attack on PKCS #1 v1.5 padding: treat 4300 a protocol version number mismatch like a decryption error 4301 in ssl3_get_client_key_exchange (ssl/s3_srvr.c). 4302 [Bodo Moeller] 4303 4304 *) Turn on RSA blinding by default in the default implementation 4305 to avoid a timing attack. Applications that don't want it can call 4306 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING. 4307 They would be ill-advised to do so in most cases. 4308 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller] 4309 4310 *) Change RSA blinding code so that it works when the PRNG is not 4311 seeded (in this case, the secret RSA exponent is abused as 4312 an unpredictable seed -- if it is not unpredictable, there 4313 is no point in blinding anyway). Make RSA blinding thread-safe 4314 by remembering the creator's thread ID in rsa->blinding and 4315 having all other threads use local one-time blinding factors 4316 (this requires more computation than sharing rsa->blinding, but 4317 avoids excessive locking; and if an RSA object is not shared 4318 between threads, blinding will still be very fast). 4319 [Bodo Moeller] 4320 4321 *) Fixed a typo bug that would cause ENGINE_set_default() to set an 4322 ENGINE as defaults for all supported algorithms irrespective of 4323 the 'flags' parameter. 'flags' is now honoured, so applications 4324 should make sure they are passing it correctly. 4325 [Geoff Thorpe] 4326 4327 *) Target "mingw" now allows native Windows code to be generated in 4328 the Cygwin environment as well as with the MinGW compiler. 4329 [Ulf Moeller] 4330 4331 Changes between 0.9.7 and 0.9.7a [19 Feb 2003] 4332 4333 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked 4334 via timing by performing a MAC computation even if incorrrect 4335 block cipher padding has been found. This is a countermeasure 4336 against active attacks where the attacker has to distinguish 4337 between bad padding and a MAC verification error. (CVE-2003-0078) 4338 4339 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL), 4340 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and 4341 Martin Vuagnoux (EPFL, Ilion)] 4342 4343 *) Make the no-err option work as intended. The intention with no-err 4344 is not to have the whole error stack handling routines removed from 4345 libcrypto, it's only intended to remove all the function name and 4346 reason texts, thereby removing some of the footprint that may not 4347 be interesting if those errors aren't displayed anyway. 4348 4349 NOTE: it's still possible for any application or module to have it's 4350 own set of error texts inserted. The routines are there, just not 4351 used by default when no-err is given. 4352 [Richard Levitte] 4353 4354 *) Add support for FreeBSD on IA64. 4355 [dirk.meyer (a] dinoex.sub.org via Richard Levitte, resolves #454] 4356 4357 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT 4358 Kerberos function mit_des_cbc_cksum(). Before this change, 4359 the value returned by DES_cbc_cksum() was like the one from 4360 mit_des_cbc_cksum(), except the bytes were swapped. 4361 [Kevin Greaney <Kevin.Greaney (a] hp.com> and Richard Levitte] 4362 4363 *) Allow an application to disable the automatic SSL chain building. 4364 Before this a rather primitive chain build was always performed in 4365 ssl3_output_cert_chain(): an application had no way to send the 4366 correct chain if the automatic operation produced an incorrect result. 4367 4368 Now the chain builder is disabled if either: 4369 4370 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert(). 4371 4372 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set. 4373 4374 The reasoning behind this is that an application would not want the 4375 auto chain building to take place if extra chain certificates are 4376 present and it might also want a means of sending no additional 4377 certificates (for example the chain has two certificates and the 4378 root is omitted). 4379 [Steve Henson] 4380 4381 *) Add the possibility to build without the ENGINE framework. 4382 [Steven Reddie <smr (a] essemer.com.au> via Richard Levitte] 4383 4384 *) Under Win32 gmtime() can return NULL: check return value in 4385 OPENSSL_gmtime(). Add error code for case where gmtime() fails. 4386 [Steve Henson] 4387 4388 *) DSA routines: under certain error conditions uninitialized BN objects 4389 could be freed. Solution: make sure initialization is performed early 4390 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler (a] MIT.EDU>, 4391 Nils Larsch <nla (a] trustcenter.de> via PR#459) 4392 [Lutz Jaenicke] 4393 4394 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly 4395 checked on reconnect on the client side, therefore session resumption 4396 could still fail with a "ssl session id is different" error. This 4397 behaviour is masked when SSL_OP_ALL is used due to 4398 SSL_OP_MICROSOFT_SESS_ID_BUG being set. 4399 Behaviour observed by Crispin Flowerday <crispin (a] flowerday.cx> as 4400 followup to PR #377. 4401 [Lutz Jaenicke] 4402 4403 *) IA-32 assembler support enhancements: unified ELF targets, support 4404 for SCO/Caldera platforms, fix for Cygwin shared build. 4405 [Andy Polyakov] 4406 4407 *) Add support for FreeBSD on sparc64. As a consequence, support for 4408 FreeBSD on non-x86 processors is separate from x86 processors on 4409 the config script, much like the NetBSD support. 4410 [Richard Levitte & Kris Kennaway <kris (a] obsecurity.org>] 4411 4412 Changes between 0.9.6h and 0.9.7 [31 Dec 2002] 4413 4414 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after 4415 OpenSSL 0.9.7.] 4416 4417 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED 4418 code (06) was taken as the first octet of the session ID and the last 4419 octet was ignored consequently. As a result SSLv2 client side session 4420 caching could not have worked due to the session ID mismatch between 4421 client and server. 4422 Behaviour observed by Crispin Flowerday <crispin (a] flowerday.cx> as 4423 PR #377. 4424 [Lutz Jaenicke] 4425 4426 *) Change the declaration of needed Kerberos libraries to use EX_LIBS 4427 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is 4428 removed entirely. 4429 [Richard Levitte] 4430 4431 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it 4432 seems that in spite of existing for more than a year, many application 4433 author have done nothing to provide the necessary callbacks, which 4434 means that this particular engine will not work properly anywhere. 4435 This is a very unfortunate situation which forces us, in the name 4436 of usability, to give the hw_ncipher.c a static lock, which is part 4437 of libcrypto. 4438 NOTE: This is for the 0.9.7 series ONLY. This hack will never 4439 appear in 0.9.8 or later. We EXPECT application authors to have 4440 dealt properly with this when 0.9.8 is released (unless we actually 4441 make such changes in the libcrypto locking code that changes will 4442 have to be made anyway). 4443 [Richard Levitte] 4444 4445 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content 4446 octets have been read, EOF or an error occurs. Without this change 4447 some truncated ASN1 structures will not produce an error. 4448 [Steve Henson] 4449 4450 *) Disable Heimdal support, since it hasn't been fully implemented. 4451 Still give the possibility to force the use of Heimdal, but with 4452 warnings and a request that patches get sent to openssl-dev. 4453 [Richard Levitte] 4454 4455 *) Add the VC-CE target, introduce the WINCE sysname, and add 4456 INSTALL.WCE and appropriate conditionals to make it build. 4457 [Steven Reddie <smr (a] essemer.com.au> via Richard Levitte] 4458 4459 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and 4460 cygssl-x.y.z.dll, where x, y and z are the major, minor and 4461 edit numbers of the version. 4462 [Corinna Vinschen <vinschen (a] redhat.com> and Richard Levitte] 4463 4464 *) Introduce safe string copy and catenation functions 4465 (BUF_strlcpy() and BUF_strlcat()). 4466 [Ben Laurie (CHATS) and Richard Levitte] 4467 4468 *) Avoid using fixed-size buffers for one-line DNs. 4469 [Ben Laurie (CHATS)] 4470 4471 *) Add BUF_MEM_grow_clean() to avoid information leakage when 4472 resizing buffers containing secrets, and use where appropriate. 4473 [Ben Laurie (CHATS)] 4474 4475 *) Avoid using fixed size buffers for configuration file location. 4476 [Ben Laurie (CHATS)] 4477 4478 *) Avoid filename truncation for various CA files. 4479 [Ben Laurie (CHATS)] 4480 4481 *) Use sizeof in preference to magic numbers. 4482 [Ben Laurie (CHATS)] 4483 4484 *) Avoid filename truncation in cert requests. 4485 [Ben Laurie (CHATS)] 4486 4487 *) Add assertions to check for (supposedly impossible) buffer 4488 overflows. 4489 [Ben Laurie (CHATS)] 4490 4491 *) Don't cache truncated DNS entries in the local cache (this could 4492 potentially lead to a spoofing attack). 4493 [Ben Laurie (CHATS)] 4494 4495 *) Fix various buffers to be large enough for hex/decimal 4496 representations in a platform independent manner. 4497 [Ben Laurie (CHATS)] 4498 4499 *) Add CRYPTO_realloc_clean() to avoid information leakage when 4500 resizing buffers containing secrets, and use where appropriate. 4501 [Ben Laurie (CHATS)] 4502 4503 *) Add BIO_indent() to avoid much slightly worrying code to do 4504 indents. 4505 [Ben Laurie (CHATS)] 4506 4507 *) Convert sprintf()/BIO_puts() to BIO_printf(). 4508 [Ben Laurie (CHATS)] 4509 4510 *) buffer_gets() could terminate with the buffer only half 4511 full. Fixed. 4512 [Ben Laurie (CHATS)] 4513 4514 *) Add assertions to prevent user-supplied crypto functions from 4515 overflowing internal buffers by having large block sizes, etc. 4516 [Ben Laurie (CHATS)] 4517 4518 *) New OPENSSL_assert() macro (similar to assert(), but enabled 4519 unconditionally). 4520 [Ben Laurie (CHATS)] 4521 4522 *) Eliminate unused copy of key in RC4. 4523 [Ben Laurie (CHATS)] 4524 4525 *) Eliminate unused and incorrectly sized buffers for IV in pem.h. 4526 [Ben Laurie (CHATS)] 4527 4528 *) Fix off-by-one error in EGD path. 4529 [Ben Laurie (CHATS)] 4530 4531 *) If RANDFILE path is too long, ignore instead of truncating. 4532 [Ben Laurie (CHATS)] 4533 4534 *) Eliminate unused and incorrectly sized X.509 structure 4535 CBCParameter. 4536 [Ben Laurie (CHATS)] 4537 4538 *) Eliminate unused and dangerous function knumber(). 4539 [Ben Laurie (CHATS)] 4540 4541 *) Eliminate unused and dangerous structure, KSSL_ERR. 4542 [Ben Laurie (CHATS)] 4543 4544 *) Protect against overlong session ID context length in an encoded 4545 session object. Since these are local, this does not appear to be 4546 exploitable. 4547 [Ben Laurie (CHATS)] 4548 4549 *) Change from security patch (see 0.9.6e below) that did not affect 4550 the 0.9.6 release series: 4551 4552 Remote buffer overflow in SSL3 protocol - an attacker could 4553 supply an oversized master key in Kerberos-enabled versions. 4554 (CVE-2002-0657) 4555 [Ben Laurie (CHATS)] 4556 4557 *) Change the SSL kerb5 codes to match RFC 2712. 4558 [Richard Levitte] 4559 4560 *) Make -nameopt work fully for req and add -reqopt switch. 4561 [Michael Bell <michael.bell (a] rz.hu-berlin.de>, Steve Henson] 4562 4563 *) The "block size" for block ciphers in CFB and OFB mode should be 1. 4564 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve (a] opera.com>] 4565 4566 *) Make sure tests can be performed even if the corresponding algorithms 4567 have been removed entirely. This was also the last step to make 4568 OpenSSL compilable with DJGPP under all reasonable conditions. 4569 [Richard Levitte, Doug Kaufman <dkaufman (a] rahul.net>] 4570 4571 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT 4572 to allow version independent disabling of normally unselected ciphers, 4573 which may be activated as a side-effect of selecting a single cipher. 4574 4575 (E.g., cipher list string "RSA" enables ciphersuites that are left 4576 out of "ALL" because they do not provide symmetric encryption. 4577 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.) 4578 [Lutz Jaenicke, Bodo Moeller] 4579 4580 *) Add appropriate support for separate platform-dependent build 4581 directories. The recommended way to make a platform-dependent 4582 build directory is the following (tested on Linux), maybe with 4583 some local tweaks: 4584 4585 # Place yourself outside of the OpenSSL source tree. In 4586 # this example, the environment variable OPENSSL_SOURCE 4587 # is assumed to contain the absolute OpenSSL source directory. 4588 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`" 4589 cd objtree/"`uname -s`-`uname -r`-`uname -m`" 4590 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do 4591 mkdir -p `dirname $F` 4592 ln -s $OPENSSL_SOURCE/$F $F 4593 done 4594 4595 To be absolutely sure not to disturb the source tree, a "make clean" 4596 is a good thing. If it isn't successfull, don't worry about it, 4597 it probably means the source directory is very clean. 4598 [Richard Levitte] 4599 4600 *) Make sure any ENGINE control commands make local copies of string 4601 pointers passed to them whenever necessary. Otherwise it is possible 4602 the caller may have overwritten (or deallocated) the original string 4603 data when a later ENGINE operation tries to use the stored values. 4604 [Gtz Babin-Ebell <babinebell (a] trustcenter.de>] 4605 4606 *) Improve diagnostics in file reading and command-line digests. 4607 [Ben Laurie aided and abetted by Solar Designer <solar (a] openwall.com>] 4608 4609 *) Add AES modes CFB and OFB to the object database. Correct an 4610 error in AES-CFB decryption. 4611 [Richard Levitte] 4612 4613 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this 4614 allows existing EVP_CIPHER_CTX structures to be reused after 4615 calling EVP_*Final(). This behaviour is used by encryption 4616 BIOs and some applications. This has the side effect that 4617 applications must explicitly clean up cipher contexts with 4618 EVP_CIPHER_CTX_cleanup() or they will leak memory. 4619 [Steve Henson] 4620 4621 *) Check the values of dna and dnb in bn_mul_recursive before calling 4622 bn_mul_comba (a non zero value means the a or b arrays do not contain 4623 n2 elements) and fallback to bn_mul_normal if either is not zero. 4624 [Steve Henson] 4625 4626 *) Fix escaping of non-ASCII characters when using the -subj option 4627 of the "openssl req" command line tool. (Robert Joop <joop (a] fokus.gmd.de>) 4628 [Lutz Jaenicke] 4629 4630 *) Make object definitions compliant to LDAP (RFC2256): SN is the short 4631 form for "surname", serialNumber has no short form. 4632 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798; 4633 therefore remove "mail" short name for "internet 7". 4634 The OID for unique identifiers in X509 certificates is 4635 x500UniqueIdentifier, not uniqueIdentifier. 4636 Some more OID additions. (Michael Bell <michael.bell (a] rz.hu-berlin.de>) 4637 [Lutz Jaenicke] 4638 4639 *) Add an "init" command to the ENGINE config module and auto initialize 4640 ENGINEs. Without any "init" command the ENGINE will be initialized 4641 after all ctrl commands have been executed on it. If init=1 the 4642 ENGINE is initailized at that point (ctrls before that point are run 4643 on the uninitialized ENGINE and after on the initialized one). If 4644 init=0 then the ENGINE will not be iniatialized at all. 4645 [Steve Henson] 4646 4647 *) Fix the 'app_verify_callback' interface so that the user-defined 4648 argument is actually passed to the callback: In the 4649 SSL_CTX_set_cert_verify_callback() prototype, the callback 4650 declaration has been changed from 4651 int (*cb)() 4652 into 4653 int (*cb)(X509_STORE_CTX *,void *); 4654 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call 4655 i=s->ctx->app_verify_callback(&ctx) 4656 has been changed into 4657 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg). 4658 4659 To update applications using SSL_CTX_set_cert_verify_callback(), 4660 a dummy argument can be added to their callback functions. 4661 [D. K. Smetters <smetters (a] parc.xerox.com>] 4662 4663 *) Added the '4758cca' ENGINE to support IBM 4758 cards. 4664 [Maurice Gittens <maurice (a] gittens.nl>, touchups by Geoff Thorpe] 4665 4666 *) Add and OPENSSL_LOAD_CONF define which will cause 4667 OpenSSL_add_all_algorithms() to load the openssl.cnf config file. 4668 This allows older applications to transparently support certain 4669 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading. 4670 Two new functions OPENSSL_add_all_algorithms_noconf() which will never 4671 load the config file and OPENSSL_add_all_algorithms_conf() which will 4672 always load it have also been added. 4673 [Steve Henson] 4674 4675 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES. 4676 Adjust NIDs and EVP layer. 4677 [Stephen Sprunk <stephen (a] sprunk.org> and Richard Levitte] 4678 4679 *) Config modules support in openssl utility. 4680 4681 Most commands now load modules from the config file, 4682 though in a few (such as version) this isn't done 4683 because it couldn't be used for anything. 4684 4685 In the case of ca and req the config file used is 4686 the same as the utility itself: that is the -config 4687 command line option can be used to specify an 4688 alternative file. 4689 [Steve Henson] 4690 4691 *) Move default behaviour from OPENSSL_config(). If appname is NULL 4692 use "openssl_conf" if filename is NULL use default openssl config file. 4693 [Steve Henson] 4694 4695 *) Add an argument to OPENSSL_config() to allow the use of an alternative 4696 config section name. Add a new flag to tolerate a missing config file 4697 and move code to CONF_modules_load_file(). 4698 [Steve Henson] 4699 4700 *) Support for crypto accelerator cards from Accelerated Encryption 4701 Processing, www.aep.ie. (Use engine 'aep') 4702 The support was copied from 0.9.6c [engine] and adapted/corrected 4703 to work with the new engine framework. 4704 [AEP Inc. and Richard Levitte] 4705 4706 *) Support for SureWare crypto accelerator cards from Baltimore 4707 Technologies. (Use engine 'sureware') 4708 The support was copied from 0.9.6c [engine] and adapted 4709 to work with the new engine framework. 4710 [Richard Levitte] 4711 4712 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually 4713 make the newer ENGINE framework commands for the CHIL engine work. 4714 [Toomas Kiisk <vix (a] cyber.ee> and Richard Levitte] 4715 4716 *) Make it possible to produce shared libraries on ReliantUNIX. 4717 [Robert Dahlem <Robert.Dahlem (a] ffm2.siemens.de> via Richard Levitte] 4718 4719 *) Add the configuration target debug-linux-ppro. 4720 Make 'openssl rsa' use the general key loading routines 4721 implemented in apps.c, and make those routines able to 4722 handle the key format FORMAT_NETSCAPE and the variant 4723 FORMAT_IISSGC. 4724 [Toomas Kiisk <vix (a] cyber.ee> via Richard Levitte] 4725 4726 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey(). 4727 [Toomas Kiisk <vix (a] cyber.ee> via Richard Levitte] 4728 4729 *) Add -keyform to rsautl, and document -engine. 4730 [Richard Levitte, inspired by Toomas Kiisk <vix (a] cyber.ee>] 4731 4732 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new 4733 BIO_R_NO_SUCH_FILE error code rather than the generic 4734 ERR_R_SYS_LIB error code if fopen() fails with ENOENT. 4735 [Ben Laurie] 4736 4737 *) Add new functions 4738 ERR_peek_last_error 4739 ERR_peek_last_error_line 4740 ERR_peek_last_error_line_data. 4741 These are similar to 4742 ERR_peek_error 4743 ERR_peek_error_line 4744 ERR_peek_error_line_data, 4745 but report on the latest error recorded rather than the first one 4746 still in the error queue. 4747 [Ben Laurie, Bodo Moeller] 4748 4749 *) default_algorithms option in ENGINE config module. This allows things 4750 like: 4751 default_algorithms = ALL 4752 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS 4753 [Steve Henson] 4754 4755 *) Prelminary ENGINE config module. 4756 [Steve Henson] 4757 4758 *) New experimental application configuration code. 4759 [Steve Henson] 4760 4761 *) Change the AES code to follow the same name structure as all other 4762 symmetric ciphers, and behave the same way. Move everything to 4763 the directory crypto/aes, thereby obsoleting crypto/rijndael. 4764 [Stephen Sprunk <stephen (a] sprunk.org> and Richard Levitte] 4765 4766 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c. 4767 [Ben Laurie and Theo de Raadt] 4768 4769 *) Add option to output public keys in req command. 4770 [Massimiliano Pala madwolf (a] openca.org] 4771 4772 *) Use wNAFs in EC_POINTs_mul() for improved efficiency 4773 (up to about 10% better than before for P-192 and P-224). 4774 [Bodo Moeller] 4775 4776 *) New functions/macros 4777 4778 SSL_CTX_set_msg_callback(ctx, cb) 4779 SSL_CTX_set_msg_callback_arg(ctx, arg) 4780 SSL_set_msg_callback(ssl, cb) 4781 SSL_set_msg_callback_arg(ssl, arg) 4782 4783 to request calling a callback function 4784 4785 void cb(int write_p, int version, int content_type, 4786 const void *buf, size_t len, SSL *ssl, void *arg) 4787 4788 whenever a protocol message has been completely received 4789 (write_p == 0) or sent (write_p == 1). Here 'version' is the 4790 protocol version according to which the SSL library interprets 4791 the current protocol message (SSL2_VERSION, SSL3_VERSION, or 4792 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or 4793 the content type as defined in the SSL 3.0/TLS 1.0 protocol 4794 specification (change_cipher_spec(20), alert(21), handshake(22)). 4795 'buf' and 'len' point to the actual message, 'ssl' to the 4796 SSL object, and 'arg' is the application-defined value set by 4797 SSL[_CTX]_set_msg_callback_arg(). 4798 4799 'openssl s_client' and 'openssl s_server' have new '-msg' options 4800 to enable a callback that displays all protocol messages. 4801 [Bodo Moeller] 4802 4803 *) Change the shared library support so shared libraries are built as 4804 soon as the corresponding static library is finished, and thereby get 4805 openssl and the test programs linked against the shared library. 4806 This still only happens when the keyword "shard" has been given to 4807 the configuration scripts. 4808 4809 NOTE: shared library support is still an experimental thing, and 4810 backward binary compatibility is still not guaranteed. 4811 ["Maciej W. Rozycki" <macro (a] ds2.pg.gda.pl> and Richard Levitte] 4812 4813 *) Add support for Subject Information Access extension. 4814 [Peter Sylvester <Peter.Sylvester (a] EdelWeb.fr>] 4815 4816 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero 4817 additional bytes when new memory had to be allocated, not just 4818 when reusing an existing buffer. 4819 [Bodo Moeller] 4820 4821 *) New command line and configuration option 'utf8' for the req command. 4822 This allows field values to be specified as UTF8 strings. 4823 [Steve Henson] 4824 4825 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel 4826 runs for the former and machine-readable output for the latter. 4827 [Ben Laurie] 4828 4829 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion 4830 of the e-mail address in the DN (i.e., it will go into a certificate 4831 extension only). The new configuration file option 'email_in_dn = no' 4832 has the same effect. 4833 [Massimiliano Pala madwolf (a] openca.org] 4834 4835 *) Change all functions with names starting with des_ to be starting 4836 with DES_ instead. Add wrappers that are compatible with libdes, 4837 but are named _ossl_old_des_*. Finally, add macros that map the 4838 des_* symbols to the corresponding _ossl_old_des_* if libdes 4839 compatibility is desired. If OpenSSL 0.9.6c compatibility is 4840 desired, the des_* symbols will be mapped to DES_*, with one 4841 exception. 4842 4843 Since we provide two compatibility mappings, the user needs to 4844 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes 4845 compatibility is desired. The default (i.e., when that macro 4846 isn't defined) is OpenSSL 0.9.6c compatibility. 4847 4848 There are also macros that enable and disable the support of old 4849 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT 4850 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those 4851 are defined, the default will apply: to support the old des routines. 4852 4853 In either case, one must include openssl/des.h to get the correct 4854 definitions. Do not try to just include openssl/des_old.h, that 4855 won't work. 4856 4857 NOTE: This is a major break of an old API into a new one. Software 4858 authors are encouraged to switch to the DES_ style functions. Some 4859 time in the future, des_old.h and the libdes compatibility functions 4860 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the 4861 default), and then completely removed. 4862 [Richard Levitte] 4863 4864 *) Test for certificates which contain unsupported critical extensions. 4865 If such a certificate is found during a verify operation it is 4866 rejected by default: this behaviour can be overridden by either 4867 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or 4868 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function 4869 X509_supported_extension() has also been added which returns 1 if a 4870 particular extension is supported. 4871 [Steve Henson] 4872 4873 *) Modify the behaviour of EVP cipher functions in similar way to digests 4874 to retain compatibility with existing code. 4875 [Steve Henson] 4876 4877 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain 4878 compatibility with existing code. In particular the 'ctx' parameter does 4879 not have to be to be initialized before the call to EVP_DigestInit() and 4880 it is tidied up after a call to EVP_DigestFinal(). New function 4881 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function 4882 EVP_MD_CTX_copy() changed to not require the destination to be 4883 initialized valid and new function EVP_MD_CTX_copy_ex() added which 4884 requires the destination to be valid. 4885 4886 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(), 4887 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex(). 4888 [Steve Henson] 4889 4890 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it 4891 so that complete 'Handshake' protocol structures are kept in memory 4892 instead of overwriting 'msg_type' and 'length' with 'body' data. 4893 [Bodo Moeller] 4894 4895 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32. 4896 [Massimo Santin via Richard Levitte] 4897 4898 *) Major restructuring to the underlying ENGINE code. This includes 4899 reduction of linker bloat, separation of pure "ENGINE" manipulation 4900 (initialisation, etc) from functionality dealing with implementations 4901 of specific crypto iterfaces. This change also introduces integrated 4902 support for symmetric ciphers and digest implementations - so ENGINEs 4903 can now accelerate these by providing EVP_CIPHER and EVP_MD 4904 implementations of their own. This is detailed in crypto/engine/README 4905 as it couldn't be adequately described here. However, there are a few 4906 API changes worth noting - some RSA, DSA, DH, and RAND functions that 4907 were changed in the original introduction of ENGINE code have now 4908 reverted back - the hooking from this code to ENGINE is now a good 4909 deal more passive and at run-time, operations deal directly with 4910 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than 4911 dereferencing through an ENGINE pointer any more. Also, the ENGINE 4912 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed - 4913 they were not being used by the framework as there is no concept of a 4914 BIGNUM_METHOD and they could not be generalised to the new 4915 'ENGINE_TABLE' mechanism that underlies the new code. Similarly, 4916 ENGINE_cpy() has been removed as it cannot be consistently defined in 4917 the new code. 4918 [Geoff Thorpe] 4919 4920 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds. 4921 [Steve Henson] 4922 4923 *) Change mkdef.pl to sort symbols that get the same entry number, 4924 and make sure the automatically generated functions ERR_load_* 4925 become part of libeay.num as well. 4926 [Richard Levitte] 4927 4928 *) New function SSL_renegotiate_pending(). This returns true once 4929 renegotiation has been requested (either SSL_renegotiate() call 4930 or HelloRequest/ClientHello receveived from the peer) and becomes 4931 false once a handshake has been completed. 4932 (For servers, SSL_renegotiate() followed by SSL_do_handshake() 4933 sends a HelloRequest, but does not ensure that a handshake takes 4934 place. SSL_renegotiate_pending() is useful for checking if the 4935 client has followed the request.) 4936 [Bodo Moeller] 4937 4938 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION. 4939 By default, clients may request session resumption even during 4940 renegotiation (if session ID contexts permit); with this option, 4941 session resumption is possible only in the first handshake. 4942 4943 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes 4944 more bits available for options that should not be part of 4945 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION). 4946 [Bodo Moeller] 4947 4948 *) Add some demos for certificate and certificate request creation. 4949 [Steve Henson] 4950 4951 *) Make maximum certificate chain size accepted from the peer application 4952 settable (SSL*_get/set_max_cert_list()), as proposed by 4953 "Douglas E. Engert" <deengert (a] anl.gov>. 4954 [Lutz Jaenicke] 4955 4956 *) Add support for shared libraries for Unixware-7 4957 (Boyd Lynn Gerber <gerberb (a] zenez.com>). 4958 [Lutz Jaenicke] 4959 4960 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to 4961 be done prior to destruction. Use this to unload error strings from 4962 ENGINEs that load their own error strings. NB: This adds two new API 4963 functions to "get" and "set" this destroy handler in an ENGINE. 4964 [Geoff Thorpe] 4965 4966 *) Alter all existing ENGINE implementations (except "openssl" and 4967 "openbsd") to dynamically instantiate their own error strings. This 4968 makes them more flexible to be built both as statically-linked ENGINEs 4969 and self-contained shared-libraries loadable via the "dynamic" ENGINE. 4970 Also, add stub code to each that makes building them as self-contained 4971 shared-libraries easier (see README.ENGINE). 4972 [Geoff Thorpe] 4973 4974 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE 4975 implementations into applications that are completely implemented in 4976 self-contained shared-libraries. The "dynamic" ENGINE exposes control 4977 commands that can be used to configure what shared-library to load and 4978 to control aspects of the way it is handled. Also, made an update to 4979 the README.ENGINE file that brings its information up-to-date and 4980 provides some information and instructions on the "dynamic" ENGINE 4981 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc). 4982 [Geoff Thorpe] 4983 4984 *) Make it possible to unload ranges of ERR strings with a new 4985 "ERR_unload_strings" function. 4986 [Geoff Thorpe] 4987 4988 *) Add a copy() function to EVP_MD. 4989 [Ben Laurie] 4990 4991 *) Make EVP_MD routines take a context pointer instead of just the 4992 md_data void pointer. 4993 [Ben Laurie] 4994 4995 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates 4996 that the digest can only process a single chunk of data 4997 (typically because it is provided by a piece of 4998 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application 4999 is only going to provide a single chunk of data, and hence the 5000 framework needn't accumulate the data for oneshot drivers. 5001 [Ben Laurie] 5002 5003 *) As with "ERR", make it possible to replace the underlying "ex_data" 5004 functions. This change also alters the storage and management of global 5005 ex_data state - it's now all inside ex_data.c and all "class" code (eg. 5006 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class 5007 index counters. The API functions that use this state have been changed 5008 to take a "class_index" rather than pointers to the class's local STACK 5009 and counter, and there is now an API function to dynamically create new 5010 classes. This centralisation allows us to (a) plug a lot of the 5011 thread-safety problems that existed, and (b) makes it possible to clean 5012 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b) 5013 such data would previously have always leaked in application code and 5014 workarounds were in place to make the memory debugging turn a blind eye 5015 to it. Application code that doesn't use this new function will still 5016 leak as before, but their memory debugging output will announce it now 5017 rather than letting it slide. 5018 5019 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change 5020 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now 5021 has a return value to indicate success or failure. 5022 [Geoff Thorpe] 5023 5024 *) Make it possible to replace the underlying "ERR" functions such that the 5025 global state (2 LHASH tables and 2 locks) is only used by the "default" 5026 implementation. This change also adds two functions to "get" and "set" 5027 the implementation prior to it being automatically set the first time 5028 any other ERR function takes place. Ie. an application can call "get", 5029 pass the return value to a module it has just loaded, and that module 5030 can call its own "set" function using that value. This means the 5031 module's "ERR" operations will use (and modify) the error state in the 5032 application and not in its own statically linked copy of OpenSSL code. 5033 [Geoff Thorpe] 5034 5035 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment 5036 reference counts. This performs normal REF_PRINT/REF_CHECK macros on 5037 the operation, and provides a more encapsulated way for external code 5038 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code 5039 to use these functions rather than manually incrementing the counts. 5040 5041 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()". 5042 [Geoff Thorpe] 5043 5044 *) Add EVP test program. 5045 [Ben Laurie] 5046 5047 *) Add symmetric cipher support to ENGINE. Expect the API to change! 5048 [Ben Laurie] 5049 5050 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name() 5051 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(), 5052 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate(). 5053 These allow a CRL to be built without having to access X509_CRL fields 5054 directly. Modify 'ca' application to use new functions. 5055 [Steve Henson] 5056 5057 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended 5058 bug workarounds. Rollback attack detection is a security feature. 5059 The problem will only arise on OpenSSL servers when TLSv1 is not 5060 available (sslv3_server_method() or SSL_OP_NO_TLSv1). 5061 Software authors not wanting to support TLSv1 will have special reasons 5062 for their choice and can explicitly enable this option. 5063 [Bodo Moeller, Lutz Jaenicke] 5064 5065 *) Rationalise EVP so it can be extended: don't include a union of 5066 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX 5067 (similar to those existing for EVP_CIPHER_CTX). 5068 Usage example: 5069 5070 EVP_MD_CTX md; 5071 5072 EVP_MD_CTX_init(&md); /* new function call */ 5073 EVP_DigestInit(&md, EVP_sha1()); 5074 EVP_DigestUpdate(&md, in, len); 5075 EVP_DigestFinal(&md, out, NULL); 5076 EVP_MD_CTX_cleanup(&md); /* new function call */ 5077 5078 [Ben Laurie] 5079 5080 *) Make DES key schedule conform to the usual scheme, as well as 5081 correcting its structure. This means that calls to DES functions 5082 now have to pass a pointer to a des_key_schedule instead of a 5083 plain des_key_schedule (which was actually always a pointer 5084 anyway): E.g., 5085 5086 des_key_schedule ks; 5087 5088 des_set_key_checked(..., &ks); 5089 des_ncbc_encrypt(..., &ks, ...); 5090 5091 (Note that a later change renames 'des_...' into 'DES_...'.) 5092 [Ben Laurie] 5093 5094 *) Initial reduction of linker bloat: the use of some functions, such as 5095 PEM causes large amounts of unused functions to be linked in due to 5096 poor organisation. For example pem_all.c contains every PEM function 5097 which has a knock on effect of linking in large amounts of (unused) 5098 ASN1 code. Grouping together similar functions and splitting unrelated 5099 functions prevents this. 5100 [Steve Henson] 5101 5102 *) Cleanup of EVP macros. 5103 [Ben Laurie] 5104 5105 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the 5106 correct _ecb suffix. 5107 [Ben Laurie] 5108 5109 *) Add initial OCSP responder support to ocsp application. The 5110 revocation information is handled using the text based index 5111 use by the ca application. The responder can either handle 5112 requests generated internally, supplied in files (for example 5113 via a CGI script) or using an internal minimal server. 5114 [Steve Henson] 5115 5116 *) Add configuration choices to get zlib compression for TLS. 5117 [Richard Levitte] 5118 5119 *) Changes to Kerberos SSL for RFC 2712 compliance: 5120 1. Implemented real KerberosWrapper, instead of just using 5121 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw (a] sxw.org.uk>] 5122 2. Implemented optional authenticator field of KerberosWrapper. 5123 5124 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req, 5125 and authenticator structs; see crypto/krb5/. 5126 5127 Generalized Kerberos calls to support multiple Kerberos libraries. 5128 [Vern Staats <staatsvr (a] asc.hpc.mil>, 5129 Jeffrey Altman <jaltman (a] columbia.edu> 5130 via Richard Levitte] 5131 5132 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it 5133 already does with RSA. testdsa.h now has 'priv_key/pub_key' 5134 values for each of the key sizes rather than having just 5135 parameters (and 'speed' generating keys each time). 5136 [Geoff Thorpe] 5137 5138 *) Speed up EVP routines. 5139 Before: 5140 encrypt 5141 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes 5142 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k 5143 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k 5144 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k 5145 decrypt 5146 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k 5147 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k 5148 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k 5149 After: 5150 encrypt 5151 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k 5152 decrypt 5153 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k 5154 [Ben Laurie] 5155 5156 *) Added the OS2-EMX target. 5157 ["Brian Havard" <brianh (a] kheldar.apana.org.au> and Richard Levitte] 5158 5159 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions 5160 to support NCONF routines in extension code. New function CONF_set_nconf() 5161 to allow functions which take an NCONF to also handle the old LHASH 5162 structure: this means that the old CONF compatible routines can be 5163 retained (in particular wrt extensions) without having to duplicate the 5164 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack. 5165 [Steve Henson] 5166 5167 *) Enhance the general user interface with mechanisms for inner control 5168 and with possibilities to have yes/no kind of prompts. 5169 [Richard Levitte] 5170 5171 *) Change all calls to low level digest routines in the library and 5172 applications to use EVP. Add missing calls to HMAC_cleanup() and 5173 don't assume HMAC_CTX can be copied using memcpy(). 5174 [Verdon Walker <VWalker (a] novell.com>, Steve Henson] 5175 5176 *) Add the possibility to control engines through control names but with 5177 arbitrary arguments instead of just a string. 5178 Change the key loaders to take a UI_METHOD instead of a callback 5179 function pointer. NOTE: this breaks binary compatibility with earlier 5180 versions of OpenSSL [engine]. 5181 Adapt the nCipher code for these new conditions and add a card insertion 5182 callback. 5183 [Richard Levitte] 5184 5185 *) Enhance the general user interface with mechanisms to better support 5186 dialog box interfaces, application-defined prompts, the possibility 5187 to use defaults (for example default passwords from somewhere else) 5188 and interrupts/cancellations. 5189 [Richard Levitte] 5190 5191 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name 5192 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility. 5193 [Steve Henson] 5194 5195 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also 5196 tidy up some unnecessarily weird code in 'sk_new()'). 5197 [Geoff, reported by Diego Tartara <dtartara (a] novamens.com>] 5198 5199 *) Change the key loading routines for ENGINEs to use the same kind 5200 callback (pem_password_cb) as all other routines that need this 5201 kind of callback. 5202 [Richard Levitte] 5203 5204 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with 5205 256 bit (=32 byte) keys. Of course seeding with more entropy bytes 5206 than this minimum value is recommended. 5207 [Lutz Jaenicke] 5208 5209 *) New random seeder for OpenVMS, using the system process statistics 5210 that are easily reachable. 5211 [Richard Levitte] 5212 5213 *) Windows apparently can't transparently handle global 5214 variables defined in DLLs. Initialisations such as: 5215 5216 const ASN1_ITEM *it = &ASN1_INTEGER_it; 5217 5218 wont compile. This is used by the any applications that need to 5219 declare their own ASN1 modules. This was fixed by adding the option 5220 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly 5221 needed for static libraries under Win32. 5222 [Steve Henson] 5223 5224 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle 5225 setting of purpose and trust fields. New X509_STORE trust and 5226 purpose functions and tidy up setting in other SSL functions. 5227 [Steve Henson] 5228 5229 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE 5230 structure. These are inherited by X509_STORE_CTX when it is 5231 initialised. This allows various defaults to be set in the 5232 X509_STORE structure (such as flags for CRL checking and custom 5233 purpose or trust settings) for functions which only use X509_STORE_CTX 5234 internally such as S/MIME. 5235 5236 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and 5237 trust settings if they are not set in X509_STORE. This allows X509_STORE 5238 purposes and trust (in S/MIME for example) to override any set by default. 5239 5240 Add command line options for CRL checking to smime, s_client and s_server 5241 applications. 5242 [Steve Henson] 5243 5244 *) Initial CRL based revocation checking. If the CRL checking flag(s) 5245 are set then the CRL is looked up in the X509_STORE structure and 5246 its validity and signature checked, then if the certificate is found 5247 in the CRL the verify fails with a revoked error. 5248 5249 Various new CRL related callbacks added to X509_STORE_CTX structure. 5250 5251 Command line options added to 'verify' application to support this. 5252 5253 This needs some additional work, such as being able to handle multiple 5254 CRLs with different times, extension based lookup (rather than just 5255 by subject name) and ultimately more complete V2 CRL extension 5256 handling. 5257 [Steve Henson] 5258 5259 *) Add a general user interface API (crypto/ui/). This is designed 5260 to replace things like des_read_password and friends (backward 5261 compatibility functions using this new API are provided). 5262 The purpose is to remove prompting functions from the DES code 5263 section as well as provide for prompting through dialog boxes in 5264 a window system and the like. 5265 [Richard Levitte] 5266 5267 *) Add "ex_data" support to ENGINE so implementations can add state at a 5268 per-structure level rather than having to store it globally. 5269 [Geoff] 5270 5271 *) Make it possible for ENGINE structures to be copied when retrieved by 5272 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY. 5273 This causes the "original" ENGINE structure to act like a template, 5274 analogous to the RSA vs. RSA_METHOD type of separation. Because of this 5275 operational state can be localised to each ENGINE structure, despite the 5276 fact they all share the same "methods". New ENGINE structures returned in 5277 this case have no functional references and the return value is the single 5278 structural reference. This matches the single structural reference returned 5279 by ENGINE_by_id() normally, when it is incremented on the pre-existing 5280 ENGINE structure. 5281 [Geoff] 5282 5283 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this 5284 needs to match any other type at all we need to manually clear the 5285 tag cache. 5286 [Steve Henson] 5287 5288 *) Changes to the "openssl engine" utility to include; 5289 - verbosity levels ('-v', '-vv', and '-vvv') that provide information 5290 about an ENGINE's available control commands. 5291 - executing control commands from command line arguments using the 5292 '-pre' and '-post' switches. '-post' is only used if '-t' is 5293 specified and the ENGINE is successfully initialised. The syntax for 5294 the individual commands are colon-separated, for example; 5295 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so 5296 [Geoff] 5297 5298 *) New dynamic control command support for ENGINEs. ENGINEs can now 5299 declare their own commands (numbers), names (strings), descriptions, 5300 and input types for run-time discovery by calling applications. A 5301 subset of these commands are implicitly classed as "executable" 5302 depending on their input type, and only these can be invoked through 5303 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this 5304 can be based on user input, config files, etc). The distinction is 5305 that "executable" commands cannot return anything other than a boolean 5306 result and can only support numeric or string input, whereas some 5307 discoverable commands may only be for direct use through 5308 ENGINE_ctrl(), eg. supporting the exchange of binary data, function 5309 pointers, or other custom uses. The "executable" commands are to 5310 support parameterisations of ENGINE behaviour that can be 5311 unambiguously defined by ENGINEs and used consistently across any 5312 OpenSSL-based application. Commands have been added to all the 5313 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow 5314 control over shared-library paths without source code alterations. 5315 [Geoff] 5316 5317 *) Changed all ENGINE implementations to dynamically allocate their 5318 ENGINEs rather than declaring them statically. Apart from this being 5319 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction, 5320 this also allows the implementations to compile without using the 5321 internal engine_int.h header. 5322 [Geoff] 5323 5324 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a 5325 'const' value. Any code that should be able to modify a RAND_METHOD 5326 should already have non-const pointers to it (ie. they should only 5327 modify their own ones). 5328 [Geoff] 5329 5330 *) Made a variety of little tweaks to the ENGINE code. 5331 - "atalla" and "ubsec" string definitions were moved from header files 5332 to C code. "nuron" string definitions were placed in variables 5333 rather than hard-coded - allowing parameterisation of these values 5334 later on via ctrl() commands. 5335 - Removed unused "#if 0"'d code. 5336 - Fixed engine list iteration code so it uses ENGINE_free() to release 5337 structural references. 5338 - Constified the RAND_METHOD element of ENGINE structures. 5339 - Constified various get/set functions as appropriate and added 5340 missing functions (including a catch-all ENGINE_cpy that duplicates 5341 all ENGINE values onto a new ENGINE except reference counts/state). 5342 - Removed NULL parameter checks in get/set functions. Setting a method 5343 or function to NULL is a way of cancelling out a previously set 5344 value. Passing a NULL ENGINE parameter is just plain stupid anyway 5345 and doesn't justify the extra error symbols and code. 5346 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for 5347 flags from engine_int.h to engine.h. 5348 - Changed prototypes for ENGINE handler functions (init(), finish(), 5349 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter. 5350 [Geoff] 5351 5352 *) Implement binary inversion algorithm for BN_mod_inverse in addition 5353 to the algorithm using long division. The binary algorithm can be 5354 used only if the modulus is odd. On 32-bit systems, it is faster 5355 only for relatively small moduli (roughly 20-30% for 128-bit moduli, 5356 roughly 5-15% for 256-bit moduli), so we use it only for moduli 5357 up to 450 bits. In 64-bit environments, the binary algorithm 5358 appears to be advantageous for much longer moduli; here we use it 5359 for moduli up to 2048 bits. 5360 [Bodo Moeller] 5361 5362 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code 5363 could not support the combine flag in choice fields. 5364 [Steve Henson] 5365 5366 *) Add a 'copy_extensions' option to the 'ca' utility. This copies 5367 extensions from a certificate request to the certificate. 5368 [Steve Henson] 5369 5370 *) Allow multiple 'certopt' and 'nameopt' options to be separated 5371 by commas. Add 'namopt' and 'certopt' options to the 'ca' config 5372 file: this allows the display of the certificate about to be 5373 signed to be customised, to allow certain fields to be included 5374 or excluded and extension details. The old system didn't display 5375 multicharacter strings properly, omitted fields not in the policy 5376 and couldn't display additional details such as extensions. 5377 [Steve Henson] 5378 5379 *) Function EC_POINTs_mul for multiple scalar multiplication 5380 of an arbitrary number of elliptic curve points 5381 \sum scalars[i]*points[i], 5382 optionally including the generator defined for the EC_GROUP: 5383 scalar*generator + \sum scalars[i]*points[i]. 5384 5385 EC_POINT_mul is a simple wrapper function for the typical case 5386 that the point list has just one item (besides the optional 5387 generator). 5388 [Bodo Moeller] 5389 5390 *) First EC_METHODs for curves over GF(p): 5391 5392 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr 5393 operations and provides various method functions that can also 5394 operate with faster implementations of modular arithmetic. 5395 5396 EC_GFp_mont_method() reuses most functions that are part of 5397 EC_GFp_simple_method, but uses Montgomery arithmetic. 5398 5399 [Bodo Moeller; point addition and point doubling 5400 implementation directly derived from source code provided by 5401 Lenka Fibikova <fibikova (a] exp-math.uni-essen.de>] 5402 5403 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h, 5404 crypto/ec/ec_lib.c): 5405 5406 Curves are EC_GROUP objects (with an optional group generator) 5407 based on EC_METHODs that are built into the library. 5408 5409 Points are EC_POINT objects based on EC_GROUP objects. 5410 5411 Most of the framework would be able to handle curves over arbitrary 5412 finite fields, but as there are no obvious types for fields other 5413 than GF(p), some functions are limited to that for now. 5414 [Bodo Moeller] 5415 5416 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires 5417 that the file contains a complete HTTP response. 5418 [Richard Levitte] 5419 5420 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl 5421 change the def and num file printf format specifier from "%-40sXXX" 5422 to "%-39s XXX". The latter will always guarantee a space after the 5423 field while the former will cause them to run together if the field 5424 is 40 of more characters long. 5425 [Steve Henson] 5426 5427 *) Constify the cipher and digest 'method' functions and structures 5428 and modify related functions to take constant EVP_MD and EVP_CIPHER 5429 pointers. 5430 [Steve Henson] 5431 5432 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them 5433 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32. 5434 [Bodo Moeller] 5435 5436 *) Modify EVP_Digest*() routines so they now return values. Although the 5437 internal software routines can never fail additional hardware versions 5438 might. 5439 [Steve Henson] 5440 5441 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts: 5442 5443 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7 5444 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32. 5445 5446 ASN1 error codes 5447 ERR_R_NESTED_ASN1_ERROR 5448 ... 5449 ERR_R_MISSING_ASN1_EOS 5450 were 4 .. 9, conflicting with 5451 ERR_LIB_RSA (= ERR_R_RSA_LIB) 5452 ... 5453 ERR_LIB_PEM (= ERR_R_PEM_LIB). 5454 They are now 58 .. 63 (i.e., just below ERR_R_FATAL). 5455 5456 Add new error code 'ERR_R_INTERNAL_ERROR'. 5457 [Bodo Moeller] 5458 5459 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock 5460 suffices. 5461 [Bodo Moeller] 5462 5463 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This 5464 sets the subject name for a new request or supersedes the 5465 subject name in a given request. Formats that can be parsed are 5466 'CN=Some Name, OU=myOU, C=IT' 5467 and 5468 'CN=Some Name/OU=myOU/C=IT'. 5469 5470 Add options '-batch' and '-verbose' to 'openssl req'. 5471 [Massimiliano Pala <madwolf (a] hackmasters.net>] 5472 5473 *) Introduce the possibility to access global variables through 5474 functions on platform were that's the best way to handle exporting 5475 global variables in shared libraries. To enable this functionality, 5476 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro 5477 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter 5478 is normally done by Configure or something similar). 5479 5480 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL 5481 in the source file (foo.c) like this: 5482 5483 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1; 5484 OPENSSL_IMPLEMENT_GLOBAL(double,bar); 5485 5486 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL 5487 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this: 5488 5489 OPENSSL_DECLARE_GLOBAL(int,foo); 5490 #define foo OPENSSL_GLOBAL_REF(foo) 5491 OPENSSL_DECLARE_GLOBAL(double,bar); 5492 #define bar OPENSSL_GLOBAL_REF(bar) 5493 5494 The #defines are very important, and therefore so is including the 5495 header file everywhere where the defined globals are used. 5496 5497 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition 5498 of ASN.1 items, but that structure is a bit different. 5499 5500 The largest change is in util/mkdef.pl which has been enhanced with 5501 better and easier to understand logic to choose which symbols should 5502 go into the Windows .def files as well as a number of fixes and code 5503 cleanup (among others, algorithm keywords are now sorted 5504 lexicographically to avoid constant rewrites). 5505 [Richard Levitte] 5506 5507 *) In BN_div() keep a copy of the sign of 'num' before writing the 5508 result to 'rm' because if rm==num the value will be overwritten 5509 and produce the wrong result if 'num' is negative: this caused 5510 problems with BN_mod() and BN_nnmod(). 5511 [Steve Henson] 5512 5513 *) Function OCSP_request_verify(). This checks the signature on an 5514 OCSP request and verifies the signer certificate. The signer 5515 certificate is just checked for a generic purpose and OCSP request 5516 trust settings. 5517 [Steve Henson] 5518 5519 *) Add OCSP_check_validity() function to check the validity of OCSP 5520 responses. OCSP responses are prepared in real time and may only 5521 be a few seconds old. Simply checking that the current time lies 5522 between thisUpdate and nextUpdate max reject otherwise valid responses 5523 caused by either OCSP responder or client clock inaccuracy. Instead 5524 we allow thisUpdate and nextUpdate to fall within a certain period of 5525 the current time. The age of the response can also optionally be 5526 checked. Two new options -validity_period and -status_age added to 5527 ocsp utility. 5528 [Steve Henson] 5529 5530 *) If signature or public key algorithm is unrecognized print out its 5531 OID rather that just UNKNOWN. 5532 [Steve Henson] 5533 5534 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and 5535 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate 5536 ID to be generated from the issuer certificate alone which can then be 5537 passed to OCSP_id_issuer_cmp(). 5538 [Steve Henson] 5539 5540 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new 5541 ASN1 modules to export functions returning ASN1_ITEM pointers 5542 instead of the ASN1_ITEM structures themselves. This adds several 5543 new macros which allow the underlying ASN1 function/structure to 5544 be accessed transparently. As a result code should not use ASN1_ITEM 5545 references directly (such as &X509_it) but instead use the relevant 5546 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow 5547 use of the new ASN1 code on platforms where exporting structures 5548 is problematical (for example in shared libraries) but exporting 5549 functions returning pointers to structures is not. 5550 [Steve Henson] 5551 5552 *) Add support for overriding the generation of SSL/TLS session IDs. 5553 These callbacks can be registered either in an SSL_CTX or per SSL. 5554 The purpose of this is to allow applications to control, if they wish, 5555 the arbitrary values chosen for use as session IDs, particularly as it 5556 can be useful for session caching in multiple-server environments. A 5557 command-line switch for testing this (and any client code that wishes 5558 to use such a feature) has been added to "s_server". 5559 [Geoff Thorpe, Lutz Jaenicke] 5560 5561 *) Modify mkdef.pl to recognise and parse preprocessor conditionals 5562 of the form '#if defined(...) || defined(...) || ...' and 5563 '#if !defined(...) && !defined(...) && ...'. This also avoids 5564 the growing number of special cases it was previously handling. 5565 [Richard Levitte] 5566 5567 *) Make all configuration macros available for application by making 5568 sure they are available in opensslconf.h, by giving them names starting 5569 with "OPENSSL_" to avoid conflicts with other packages and by making 5570 sure e_os2.h will cover all platform-specific cases together with 5571 opensslconf.h. 5572 Additionally, it is now possible to define configuration/platform- 5573 specific names (called "system identities"). In the C code, these 5574 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another 5575 macro with the name beginning with "OPENSSL_SYS_", which is determined 5576 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on 5577 what is available. 5578 [Richard Levitte] 5579 5580 *) New option -set_serial to 'req' and 'x509' this allows the serial 5581 number to use to be specified on the command line. Previously self 5582 signed certificates were hard coded with serial number 0 and the 5583 CA options of 'x509' had to use a serial number in a file which was 5584 auto incremented. 5585 [Steve Henson] 5586 5587 *) New options to 'ca' utility to support V2 CRL entry extensions. 5588 Currently CRL reason, invalidity date and hold instruction are 5589 supported. Add new CRL extensions to V3 code and some new objects. 5590 [Steve Henson] 5591 5592 *) New function EVP_CIPHER_CTX_set_padding() this is used to 5593 disable standard block padding (aka PKCS#5 padding) in the EVP 5594 API, which was previously mandatory. This means that the data is 5595 not padded in any way and so the total length much be a multiple 5596 of the block size, otherwise an error occurs. 5597 [Steve Henson] 5598 5599 *) Initial (incomplete) OCSP SSL support. 5600 [Steve Henson] 5601 5602 *) New function OCSP_parse_url(). This splits up a URL into its host, 5603 port and path components: primarily to parse OCSP URLs. New -url 5604 option to ocsp utility. 5605 [Steve Henson] 5606 5607 *) New nonce behavior. The return value of OCSP_check_nonce() now 5608 reflects the various checks performed. Applications can decide 5609 whether to tolerate certain situations such as an absent nonce 5610 in a response when one was present in a request: the ocsp application 5611 just prints out a warning. New function OCSP_add1_basic_nonce() 5612 this is to allow responders to include a nonce in a response even if 5613 the request is nonce-less. 5614 [Steve Henson] 5615 5616 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are 5617 skipped when using openssl x509 multiple times on a single input file, 5618 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs". 5619 [Bodo Moeller] 5620 5621 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string() 5622 set string type: to handle setting ASN1_TIME structures. Fix ca 5623 utility to correctly initialize revocation date of CRLs. 5624 [Steve Henson] 5625 5626 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override 5627 the clients preferred ciphersuites and rather use its own preferences. 5628 Should help to work around M$ SGC (Server Gated Cryptography) bug in 5629 Internet Explorer by ensuring unchanged hash method during stepup. 5630 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.) 5631 [Lutz Jaenicke] 5632 5633 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael 5634 to aes and add a new 'exist' option to print out symbols that don't 5635 appear to exist. 5636 [Steve Henson] 5637 5638 *) Additional options to ocsp utility to allow flags to be set and 5639 additional certificates supplied. 5640 [Steve Henson] 5641 5642 *) Add the option -VAfile to 'openssl ocsp', so the user can give the 5643 OCSP client a number of certificate to only verify the response 5644 signature against. 5645 [Richard Levitte] 5646 5647 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to 5648 handle the new API. Currently only ECB, CBC modes supported. Add new 5649 AES OIDs. 5650 5651 Add TLS AES ciphersuites as described in RFC3268, "Advanced 5652 Encryption Standard (AES) Ciphersuites for Transport Layer 5653 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were 5654 not enabled by default and were not part of the "ALL" ciphersuite 5655 alias because they were not yet official; they could be 5656 explicitly requested by specifying the "AESdraft" ciphersuite 5657 group alias. In the final release of OpenSSL 0.9.7, the group 5658 alias is called "AES" and is part of "ALL".) 5659 [Ben Laurie, Steve Henson, Bodo Moeller] 5660 5661 *) New function OCSP_copy_nonce() to copy nonce value (if present) from 5662 request to response. 5663 [Steve Henson] 5664 5665 *) Functions for OCSP responders. OCSP_request_onereq_count(), 5666 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info() 5667 extract information from a certificate request. OCSP_response_create() 5668 creates a response and optionally adds a basic response structure. 5669 OCSP_basic_add1_status() adds a complete single response to a basic 5670 response and returns the OCSP_SINGLERESP structure just added (to allow 5671 extensions to be included for example). OCSP_basic_add1_cert() adds a 5672 certificate to a basic response and OCSP_basic_sign() signs a basic 5673 response with various flags. New helper functions ASN1_TIME_check() 5674 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime() 5675 (converts ASN1_TIME to GeneralizedTime). 5676 [Steve Henson] 5677 5678 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}() 5679 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key 5680 structure from a certificate. X509_pubkey_digest() digests the public_key 5681 contents: this is used in various key identifiers. 5682 [Steve Henson] 5683 5684 *) Make sk_sort() tolerate a NULL argument. 5685 [Steve Henson reported by Massimiliano Pala <madwolf (a] comune.modena.it>] 5686 5687 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates 5688 passed by the function are trusted implicitly. If any of them signed the 5689 response then it is assumed to be valid and is not verified. 5690 [Steve Henson] 5691 5692 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT 5693 to data. This was previously part of the PKCS7 ASN1 code. This 5694 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures. 5695 [Steve Henson, reported by Kenneth R. Robinette 5696 <support (a] securenetterm.com>] 5697 5698 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1 5699 routines: without these tracing memory leaks is very painful. 5700 Fix leaks in PKCS12 and PKCS7 routines. 5701 [Steve Henson] 5702 5703 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new(). 5704 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which 5705 effectively meant GeneralizedTime would never be used. Now it 5706 is initialised to -1 but X509_time_adj() now has to check the value 5707 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or 5708 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime. 5709 [Steve Henson, reported by Kenneth R. Robinette 5710 <support (a] securenetterm.com>] 5711 5712 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously 5713 result in a zero length in the ASN1_INTEGER structure which was 5714 not consistent with the structure when d2i_ASN1_INTEGER() was used 5715 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER() 5716 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER() 5717 where it did not print out a minus for negative ASN1_INTEGER. 5718 [Steve Henson] 5719 5720 *) Add summary printout to ocsp utility. The various functions which 5721 convert status values to strings have been renamed to: 5722 OCSP_response_status_str(), OCSP_cert_status_str() and 5723 OCSP_crl_reason_str() and are no longer static. New options 5724 to verify nonce values and to disable verification. OCSP response 5725 printout format cleaned up. 5726 [Steve Henson] 5727 5728 *) Add additional OCSP certificate checks. These are those specified 5729 in RFC2560. This consists of two separate checks: the CA of the 5730 certificate being checked must either be the OCSP signer certificate 5731 or the issuer of the OCSP signer certificate. In the latter case the 5732 OCSP signer certificate must contain the OCSP signing extended key 5733 usage. This check is performed by attempting to match the OCSP 5734 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash 5735 in the OCSP_CERTID structures of the response. 5736 [Steve Henson] 5737 5738 *) Initial OCSP certificate verification added to OCSP_basic_verify() 5739 and related routines. This uses the standard OpenSSL certificate 5740 verify routines to perform initial checks (just CA validity) and 5741 to obtain the certificate chain. Then additional checks will be 5742 performed on the chain. Currently the root CA is checked to see 5743 if it is explicitly trusted for OCSP signing. This is used to set 5744 a root CA as a global signing root: that is any certificate that 5745 chains to that CA is an acceptable OCSP signing certificate. 5746 [Steve Henson] 5747 5748 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3 5749 extensions from a separate configuration file. 5750 As when reading extensions from the main configuration file, 5751 the '-extensions ...' option may be used for specifying the 5752 section to use. 5753 [Massimiliano Pala <madwolf (a] comune.modena.it>] 5754 5755 *) New OCSP utility. Allows OCSP requests to be generated or 5756 read. The request can be sent to a responder and the output 5757 parsed, outputed or printed in text form. Not complete yet: 5758 still needs to check the OCSP response validity. 5759 [Steve Henson] 5760 5761 *) New subcommands for 'openssl ca': 5762 'openssl ca -status <serial>' prints the status of the cert with 5763 the given serial number (according to the index file). 5764 'openssl ca -updatedb' updates the expiry status of certificates 5765 in the index file. 5766 [Massimiliano Pala <madwolf (a] comune.modena.it>] 5767 5768 *) New '-newreq-nodes' command option to CA.pl. This is like 5769 '-newreq', but calls 'openssl req' with the '-nodes' option 5770 so that the resulting key is not encrypted. 5771 [Damien Miller <djm (a] mindrot.org>] 5772 5773 *) New configuration for the GNU Hurd. 5774 [Jonathan Bartlett <johnnyb (a] wolfram.com> via Richard Levitte] 5775 5776 *) Initial code to implement OCSP basic response verify. This 5777 is currently incomplete. Currently just finds the signer's 5778 certificate and verifies the signature on the response. 5779 [Steve Henson] 5780 5781 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in 5782 value of OPENSSLDIR. This is available via the new '-d' option 5783 to 'openssl version', and is also included in 'openssl version -a'. 5784 [Bodo Moeller] 5785 5786 *) Allowing defining memory allocation callbacks that will be given 5787 file name and line number information in additional arguments 5788 (a const char* and an int). The basic functionality remains, as 5789 well as the original possibility to just replace malloc(), 5790 realloc() and free() by functions that do not know about these 5791 additional arguments. To register and find out the current 5792 settings for extended allocation functions, the following 5793 functions are provided: 5794 5795 CRYPTO_set_mem_ex_functions 5796 CRYPTO_set_locked_mem_ex_functions 5797 CRYPTO_get_mem_ex_functions 5798 CRYPTO_get_locked_mem_ex_functions 5799 5800 These work the same way as CRYPTO_set_mem_functions and friends. 5801 CRYPTO_get_[locked_]mem_functions now writes 0 where such an 5802 extended allocation function is enabled. 5803 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where 5804 a conventional allocation function is enabled. 5805 [Richard Levitte, Bodo Moeller] 5806 5807 *) Finish off removing the remaining LHASH function pointer casts. 5808 There should no longer be any prototype-casting required when using 5809 the LHASH abstraction, and any casts that remain are "bugs". See 5810 the callback types and macros at the head of lhash.h for details 5811 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example). 5812 [Geoff Thorpe] 5813 5814 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant. 5815 If /dev/[u]random devices are not available or do not return enough 5816 entropy, EGD style sockets (served by EGD or PRNGD) will automatically 5817 be queried. 5818 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and 5819 /etc/entropy will be queried once each in this sequence, quering stops 5820 when enough entropy was collected without querying more sockets. 5821 [Lutz Jaenicke] 5822 5823 *) Change the Unix RAND_poll() variant to be able to poll several 5824 random devices, as specified by DEVRANDOM, until a sufficient amount 5825 of data has been collected. We spend at most 10 ms on each file 5826 (select timeout) and read in non-blocking mode. DEVRANDOM now 5827 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom" 5828 (previously it was just the string "/dev/urandom"), so on typical 5829 platforms the 10 ms delay will never occur. 5830 Also separate out the Unix variant to its own file, rand_unix.c. 5831 For VMS, there's a currently-empty rand_vms.c. 5832 [Richard Levitte] 5833 5834 *) Move OCSP client related routines to ocsp_cl.c. These 5835 provide utility functions which an application needing 5836 to issue a request to an OCSP responder and analyse the 5837 response will typically need: as opposed to those which an 5838 OCSP responder itself would need which will be added later. 5839 5840 OCSP_request_sign() signs an OCSP request with an API similar 5841 to PKCS7_sign(). OCSP_response_status() returns status of OCSP 5842 response. OCSP_response_get1_basic() extracts basic response 5843 from response. OCSP_resp_find_status(): finds and extracts status 5844 information from an OCSP_CERTID structure (which will be created 5845 when the request structure is built). These are built from lower 5846 level functions which work on OCSP_SINGLERESP structures but 5847 wont normally be used unless the application wishes to examine 5848 extensions in the OCSP response for example. 5849 5850 Replace nonce routines with a pair of functions. 5851 OCSP_request_add1_nonce() adds a nonce value and optionally 5852 generates a random value. OCSP_check_nonce() checks the 5853 validity of the nonce in an OCSP response. 5854 [Steve Henson] 5855 5856 *) Change function OCSP_request_add() to OCSP_request_add0_id(). 5857 This doesn't copy the supplied OCSP_CERTID and avoids the 5858 need to free up the newly created id. Change return type 5859 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure. 5860 This can then be used to add extensions to the request. 5861 Deleted OCSP_request_new(), since most of its functionality 5862 is now in OCSP_REQUEST_new() (and the case insensitive name 5863 clash) apart from the ability to set the request name which 5864 will be added elsewhere. 5865 [Steve Henson] 5866 5867 *) Update OCSP API. Remove obsolete extensions argument from 5868 various functions. Extensions are now handled using the new 5869 OCSP extension code. New simple OCSP HTTP function which 5870 can be used to send requests and parse the response. 5871 [Steve Henson] 5872 5873 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new 5874 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN 5875 uses the special reorder version of SET OF to sort the attributes 5876 and reorder them to match the encoded order. This resolves a long 5877 standing problem: a verify on a PKCS7 structure just after signing 5878 it used to fail because the attribute order did not match the 5879 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes: 5880 it uses the received order. This is necessary to tolerate some broken 5881 software that does not order SET OF. This is handled by encoding 5882 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class) 5883 to produce the required SET OF. 5884 [Steve Henson] 5885 5886 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and 5887 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header 5888 files to get correct declarations of the ASN.1 item variables. 5889 [Richard Levitte] 5890 5891 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many 5892 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs: 5893 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was 5894 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i(). 5895 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant 5896 ASN1_ITEM and no wrapper functions. 5897 [Steve Henson] 5898 5899 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These 5900 replace the old function pointer based I/O routines. Change most of 5901 the *_d2i_bio() and *_d2i_fp() functions to use these. 5902 [Steve Henson] 5903 5904 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor 5905 lines, recognice more "algorithms" that can be deselected, and make 5906 it complain about algorithm deselection that isn't recognised. 5907 [Richard Levitte] 5908 5909 *) New ASN1 functions to handle dup, sign, verify, digest, pack and 5910 unpack operations in terms of ASN1_ITEM. Modify existing wrappers 5911 to use new functions. Add NO_ASN1_OLD which can be set to remove 5912 some old style ASN1 functions: this can be used to determine if old 5913 code will still work when these eventually go away. 5914 [Steve Henson] 5915 5916 *) New extension functions for OCSP structures, these follow the 5917 same conventions as certificates and CRLs. 5918 [Steve Henson] 5919 5920 *) New function X509V3_add1_i2d(). This automatically encodes and 5921 adds an extension. Its behaviour can be customised with various 5922 flags to append, replace or delete. Various wrappers added for 5923 certifcates and CRLs. 5924 [Steve Henson] 5925 5926 *) Fix to avoid calling the underlying ASN1 print routine when 5927 an extension cannot be parsed. Correct a typo in the 5928 OCSP_SERVICELOC extension. Tidy up print OCSP format. 5929 [Steve Henson] 5930 5931 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate 5932 entries for variables. 5933 [Steve Henson] 5934 5935 *) Add functionality to apps/openssl.c for detecting locking 5936 problems: As the program is single-threaded, all we have 5937 to do is register a locking callback using an array for 5938 storing which locks are currently held by the program. 5939 [Bodo Moeller] 5940 5941 *) Use a lock around the call to CRYPTO_get_ex_new_index() in 5942 SSL_get_ex_data_X509_STORE_idx(), which is used in 5943 ssl_verify_cert_chain() and thus can be called at any time 5944 during TLS/SSL handshakes so that thread-safety is essential. 5945 Unfortunately, the ex_data design is not at all suited 5946 for multi-threaded use, so it probably should be abolished. 5947 [Bodo Moeller] 5948 5949 *) Added Broadcom "ubsec" ENGINE to OpenSSL. 5950 [Broadcom, tweaked and integrated by Geoff Thorpe] 5951 5952 *) Move common extension printing code to new function 5953 X509V3_print_extensions(). Reorganise OCSP print routines and 5954 implement some needed OCSP ASN1 functions. Add OCSP extensions. 5955 [Steve Henson] 5956 5957 *) New function X509_signature_print() to remove duplication in some 5958 print routines. 5959 [Steve Henson] 5960 5961 *) Add a special meaning when SET OF and SEQUENCE OF flags are both 5962 set (this was treated exactly the same as SET OF previously). This 5963 is used to reorder the STACK representing the structure to match the 5964 encoding. This will be used to get round a problem where a PKCS7 5965 structure which was signed could not be verified because the STACK 5966 order did not reflect the encoded order. 5967 [Steve Henson] 5968 5969 *) Reimplement the OCSP ASN1 module using the new code. 5970 [Steve Henson] 5971 5972 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure 5973 for its ASN1 operations. The old style function pointers still exist 5974 for now but they will eventually go away. 5975 [Steve Henson] 5976 5977 *) Merge in replacement ASN1 code from the ASN1 branch. This almost 5978 completely replaces the old ASN1 functionality with a table driven 5979 encoder and decoder which interprets an ASN1_ITEM structure describing 5980 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is 5981 largely maintained. Almost all of the old asn1_mac.h macro based ASN1 5982 has also been converted to the new form. 5983 [Steve Henson] 5984 5985 *) Change BN_mod_exp_recp so that negative moduli are tolerated 5986 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set 5987 so that BN_mod_exp_mont and BN_mod_exp_mont_word work 5988 for negative moduli. 5989 [Bodo Moeller] 5990 5991 *) Fix BN_uadd and BN_usub: Always return non-negative results instead 5992 of not touching the result's sign bit. 5993 [Bodo Moeller] 5994 5995 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be 5996 set. 5997 [Bodo Moeller] 5998 5999 *) Changed the LHASH code to use prototypes for callbacks, and created 6000 macros to declare and implement thin (optionally static) functions 6001 that provide type-safety and avoid function pointer casting for the 6002 type-specific callbacks. 6003 [Geoff Thorpe] 6004 6005 *) Added Kerberos Cipher Suites to be used with TLS, as written in 6006 RFC 2712. 6007 [Veers Staats <staatsvr (a] asc.hpc.mil>, 6008 Jeffrey Altman <jaltman (a] columbia.edu>, via Richard Levitte] 6009 6010 *) Reformat the FAQ so the different questions and answers can be divided 6011 in sections depending on the subject. 6012 [Richard Levitte] 6013 6014 *) Have the zlib compression code load ZLIB.DLL dynamically under 6015 Windows. 6016 [Richard Levitte] 6017 6018 *) New function BN_mod_sqrt for computing square roots modulo a prime 6019 (using the probabilistic Tonelli-Shanks algorithm unless 6020 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can 6021 be handled deterministically). 6022 [Lenka Fibikova <fibikova (a] exp-math.uni-essen.de>, Bodo Moeller] 6023 6024 *) Make BN_mod_inverse faster by explicitly handling small quotients 6025 in the Euclid loop. (Speed gain about 20% for small moduli [256 or 6026 512 bits], about 30% for larger ones [1024 or 2048 bits].) 6027 [Bodo Moeller] 6028 6029 *) New function BN_kronecker. 6030 [Bodo Moeller] 6031 6032 *) Fix BN_gcd so that it works on negative inputs; the result is 6033 positive unless both parameters are zero. 6034 Previously something reasonably close to an infinite loop was 6035 possible because numbers could be growing instead of shrinking 6036 in the implementation of Euclid's algorithm. 6037 [Bodo Moeller] 6038 6039 *) Fix BN_is_word() and BN_is_one() macros to take into account the 6040 sign of the number in question. 6041 6042 Fix BN_is_word(a,w) to work correctly for w == 0. 6043 6044 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w) 6045 because its test if the absolute value of 'a' equals 'w'. 6046 Note that BN_abs_is_word does *not* handle w == 0 reliably; 6047 it exists mostly for use in the implementations of BN_is_zero(), 6048 BN_is_one(), and BN_is_word(). 6049 [Bodo Moeller] 6050 6051 *) New function BN_swap. 6052 [Bodo Moeller] 6053 6054 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that 6055 the exponentiation functions are more likely to produce reasonable 6056 results on negative inputs. 6057 [Bodo Moeller] 6058 6059 *) Change BN_mod_mul so that the result is always non-negative. 6060 Previously, it could be negative if one of the factors was negative; 6061 I don't think anyone really wanted that behaviour. 6062 [Bodo Moeller] 6063 6064 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c 6065 (except for exponentiation, which stays in crypto/bn/bn_exp.c, 6066 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c) 6067 and add new functions: 6068 6069 BN_nnmod 6070 BN_mod_sqr 6071 BN_mod_add 6072 BN_mod_add_quick 6073 BN_mod_sub 6074 BN_mod_sub_quick 6075 BN_mod_lshift1 6076 BN_mod_lshift1_quick 6077 BN_mod_lshift 6078 BN_mod_lshift_quick 6079 6080 These functions always generate non-negative results. 6081 6082 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r 6083 such that |m| < r < 0, BN_nnmod will output rem + |m| instead). 6084 6085 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as 6086 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b] 6087 be reduced modulo m. 6088 [Lenka Fibikova <fibikova (a] exp-math.uni-essen.de>, Bodo Moeller] 6089 6090 #if 0 6091 The following entry accidentily appeared in the CHANGES file 6092 distributed with OpenSSL 0.9.7. The modifications described in 6093 it do *not* apply to OpenSSL 0.9.7. 6094 6095 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there 6096 was actually never needed) and in BN_mul(). The removal in BN_mul() 6097 required a small change in bn_mul_part_recursive() and the addition 6098 of the functions bn_cmp_part_words(), bn_sub_part_words() and 6099 bn_add_part_words(), which do the same thing as bn_cmp_words(), 6100 bn_sub_words() and bn_add_words() except they take arrays with 6101 differing sizes. 6102 [Richard Levitte] 6103 #endif 6104 6105 *) In 'openssl passwd', verify passwords read from the terminal 6106 unless the '-salt' option is used (which usually means that 6107 verification would just waste user's time since the resulting 6108 hash is going to be compared with some given password hash) 6109 or the new '-noverify' option is used. 6110 6111 This is an incompatible change, but it does not affect 6112 non-interactive use of 'openssl passwd' (passwords on the command 6113 line, '-stdin' option, '-in ...' option) and thus should not 6114 cause any problems. 6115 [Bodo Moeller] 6116 6117 *) Remove all references to RSAref, since there's no more need for it. 6118 [Richard Levitte] 6119 6120 *) Make DSO load along a path given through an environment variable 6121 (SHLIB_PATH) with shl_load(). 6122 [Richard Levitte] 6123 6124 *) Constify the ENGINE code as a result of BIGNUM constification. 6125 Also constify the RSA code and most things related to it. In a 6126 few places, most notable in the depth of the ASN.1 code, ugly 6127 casts back to non-const were required (to be solved at a later 6128 time) 6129 [Richard Levitte] 6130 6131 *) Make it so the openssl application has all engines loaded by default. 6132 [Richard Levitte] 6133 6134 *) Constify the BIGNUM routines a little more. 6135 [Richard Levitte] 6136 6137 *) Add the following functions: 6138 6139 ENGINE_load_cswift() 6140 ENGINE_load_chil() 6141 ENGINE_load_atalla() 6142 ENGINE_load_nuron() 6143 ENGINE_load_builtin_engines() 6144 6145 That way, an application can itself choose if external engines that 6146 are built-in in OpenSSL shall ever be used or not. The benefit is 6147 that applications won't have to be linked with libdl or other dso 6148 libraries unless it's really needed. 6149 6150 Changed 'openssl engine' to load all engines on demand. 6151 Changed the engine header files to avoid the duplication of some 6152 declarations (they differed!). 6153 [Richard Levitte] 6154 6155 *) 'openssl engine' can now list capabilities. 6156 [Richard Levitte] 6157 6158 *) Better error reporting in 'openssl engine'. 6159 [Richard Levitte] 6160 6161 *) Never call load_dh_param(NULL) in s_server. 6162 [Bodo Moeller] 6163 6164 *) Add engine application. It can currently list engines by name and 6165 identity, and test if they are actually available. 6166 [Richard Levitte] 6167 6168 *) Improve RPM specification file by forcing symbolic linking and making 6169 sure the installed documentation is also owned by root.root. 6170 [Damien Miller <djm (a] mindrot.org>] 6171 6172 *) Give the OpenSSL applications more possibilities to make use of 6173 keys (public as well as private) handled by engines. 6174 [Richard Levitte] 6175 6176 *) Add OCSP code that comes from CertCo. 6177 [Richard Levitte] 6178 6179 *) Add VMS support for the Rijndael code. 6180 [Richard Levitte] 6181 6182 *) Added untested support for Nuron crypto accelerator. 6183 [Ben Laurie] 6184 6185 *) Add support for external cryptographic devices. This code was 6186 previously distributed separately as the "engine" branch. 6187 [Geoff Thorpe, Richard Levitte] 6188 6189 *) Rework the filename-translation in the DSO code. It is now possible to 6190 have far greater control over how a "name" is turned into a filename 6191 depending on the operating environment and any oddities about the 6192 different shared library filenames on each system. 6193 [Geoff Thorpe] 6194 6195 *) Support threads on FreeBSD-elf in Configure. 6196 [Richard Levitte] 6197 6198 *) Fix for SHA1 assembly problem with MASM: it produces 6199 warnings about corrupt line number information when assembling 6200 with debugging information. This is caused by the overlapping 6201 of two sections. 6202 [Bernd Matthes <mainbug (a] celocom.de>, Steve Henson] 6203 6204 *) NCONF changes. 6205 NCONF_get_number() has no error checking at all. As a replacement, 6206 NCONF_get_number_e() is defined (_e for "error checking") and is 6207 promoted strongly. The old NCONF_get_number is kept around for 6208 binary backward compatibility. 6209 Make it possible for methods to load from something other than a BIO, 6210 by providing a function pointer that is given a name instead of a BIO. 6211 For example, this could be used to load configuration data from an 6212 LDAP server. 6213 [Richard Levitte] 6214 6215 *) Fix for non blocking accept BIOs. Added new I/O special reason 6216 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs 6217 with non blocking I/O was not possible because no retry code was 6218 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover 6219 this case. 6220 [Steve Henson] 6221 6222 *) Added the beginnings of Rijndael support. 6223 [Ben Laurie] 6224 6225 *) Fix for bug in DirectoryString mask setting. Add support for 6226 X509_NAME_print_ex() in 'req' and X509_print_ex() function 6227 to allow certificate printing to more controllable, additional 6228 'certopt' option to 'x509' to allow new printing options to be 6229 set. 6230 [Steve Henson] 6231 6232 *) Clean old EAY MD5 hack from e_os.h. 6233 [Richard Levitte] 6234 6235 Changes between 0.9.6l and 0.9.6m [17 Mar 2004] 6236 6237 *) Fix null-pointer assignment in do_change_cipher_spec() revealed 6238 by using the Codenomicon TLS Test Tool (CVE-2004-0079) 6239 [Joe Orton, Steve Henson] 6240 6241 Changes between 0.9.6k and 0.9.6l [04 Nov 2003] 6242 6243 *) Fix additional bug revealed by the NISCC test suite: 6244 6245 Stop bug triggering large recursion when presented with 6246 certain ASN.1 tags (CVE-2003-0851) 6247 [Steve Henson] 6248 6249 Changes between 0.9.6j and 0.9.6k [30 Sep 2003] 6250 6251 *) Fix various bugs revealed by running the NISCC test suite: 6252 6253 Stop out of bounds reads in the ASN1 code when presented with 6254 invalid tags (CVE-2003-0543 and CVE-2003-0544). 6255 6256 If verify callback ignores invalid public key errors don't try to check 6257 certificate signature with the NULL public key. 6258 6259 [Steve Henson] 6260 6261 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate 6262 if the server requested one: as stated in TLS 1.0 and SSL 3.0 6263 specifications. 6264 [Steve Henson] 6265 6266 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional 6267 extra data after the compression methods not only for TLS 1.0 6268 but also for SSL 3.0 (as required by the specification). 6269 [Bodo Moeller; problem pointed out by Matthias Loepfe] 6270 6271 *) Change X509_certificate_type() to mark the key as exported/exportable 6272 when it's 512 *bits* long, not 512 bytes. 6273 [Richard Levitte] 6274 6275 Changes between 0.9.6i and 0.9.6j [10 Apr 2003] 6276 6277 *) Countermeasure against the Klima-Pokorny-Rosa extension of 6278 Bleichbacher's attack on PKCS #1 v1.5 padding: treat 6279 a protocol version number mismatch like a decryption error 6280 in ssl3_get_client_key_exchange (ssl/s3_srvr.c). 6281 [Bodo Moeller] 6282 6283 *) Turn on RSA blinding by default in the default implementation 6284 to avoid a timing attack. Applications that don't want it can call 6285 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING. 6286 They would be ill-advised to do so in most cases. 6287 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller] 6288 6289 *) Change RSA blinding code so that it works when the PRNG is not 6290 seeded (in this case, the secret RSA exponent is abused as 6291 an unpredictable seed -- if it is not unpredictable, there 6292 is no point in blinding anyway). Make RSA blinding thread-safe 6293 by remembering the creator's thread ID in rsa->blinding and 6294 having all other threads use local one-time blinding factors 6295 (this requires more computation than sharing rsa->blinding, but 6296 avoids excessive locking; and if an RSA object is not shared 6297 between threads, blinding will still be very fast). 6298 [Bodo Moeller] 6299 6300 Changes between 0.9.6h and 0.9.6i [19 Feb 2003] 6301 6302 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked 6303 via timing by performing a MAC computation even if incorrrect 6304 block cipher padding has been found. This is a countermeasure 6305 against active attacks where the attacker has to distinguish 6306 between bad padding and a MAC verification error. (CVE-2003-0078) 6307 6308 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL), 6309 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and 6310 Martin Vuagnoux (EPFL, Ilion)] 6311 6312 Changes between 0.9.6g and 0.9.6h [5 Dec 2002] 6313 6314 *) New function OPENSSL_cleanse(), which is used to cleanse a section of 6315 memory from it's contents. This is done with a counter that will 6316 place alternating values in each byte. This can be used to solve 6317 two issues: 1) the removal of calls to memset() by highly optimizing 6318 compilers, and 2) cleansing with other values than 0, since those can 6319 be read through on certain media, for example a swap space on disk. 6320 [Geoff Thorpe] 6321 6322 *) Bugfix: client side session caching did not work with external caching, 6323 because the session->cipher setting was not restored when reloading 6324 from the external cache. This problem was masked, when 6325 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set. 6326 (Found by Steve Haslam <steve (a] araqnid.ddts.net>.) 6327 [Lutz Jaenicke] 6328 6329 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total 6330 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33. 6331 [Zeev Lieber <zeev-l (a] yahoo.com>] 6332 6333 *) Undo an undocumented change introduced in 0.9.6e which caused 6334 repeated calls to OpenSSL_add_all_ciphers() and 6335 OpenSSL_add_all_digests() to be ignored, even after calling 6336 EVP_cleanup(). 6337 [Richard Levitte] 6338 6339 *) Change the default configuration reader to deal with last line not 6340 being properly terminated. 6341 [Richard Levitte] 6342 6343 *) Change X509_NAME_cmp() so it applies the special rules on handling 6344 DN values that are of type PrintableString, as well as RDNs of type 6345 emailAddress where the value has the type ia5String. 6346 [stefank (a] valicert.com via Richard Levitte] 6347 6348 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half 6349 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently 6350 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be 6351 the bitwise-OR of the two for use by the majority of applications 6352 wanting this behaviour, and update the docs. The documented 6353 behaviour and actual behaviour were inconsistent and had been 6354 changing anyway, so this is more a bug-fix than a behavioural 6355 change. 6356 [Geoff Thorpe, diagnosed by Nadav Har'El] 6357 6358 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c 6359 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes). 6360 [Bodo Moeller] 6361 6362 *) Fix initialization code race conditions in 6363 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(), 6364 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(), 6365 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(), 6366 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(), 6367 ssl2_get_cipher_by_char(), 6368 ssl3_get_cipher_by_char(). 6369 [Patrick McCormick <patrick (a] tellme.com>, Bodo Moeller] 6370 6371 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after 6372 the cached sessions are flushed, as the remove_cb() might use ex_data 6373 contents. Bug found by Sam Varshavchik <mrsam (a] courier-mta.com> 6374 (see [openssl.org #212]). 6375 [Geoff Thorpe, Lutz Jaenicke] 6376 6377 *) Fix typo in OBJ_txt2obj which incorrectly passed the content 6378 length, instead of the encoding length to d2i_ASN1_OBJECT. 6379 [Steve Henson] 6380 6381 Changes between 0.9.6f and 0.9.6g [9 Aug 2002] 6382 6383 *) [In 0.9.6g-engine release:] 6384 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall'). 6385 [Lynn Gazis <lgazis (a] rainbow.com>] 6386 6387 Changes between 0.9.6e and 0.9.6f [8 Aug 2002] 6388 6389 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX 6390 and get fix the header length calculation. 6391 [Florian Weimer <Weimer (a] CERT.Uni-Stuttgart.DE>, 6392 Alon Kantor <alonk (a] checkpoint.com> (and others), 6393 Steve Henson] 6394 6395 *) Use proper error handling instead of 'assertions' in buffer 6396 overflow checks added in 0.9.6e. This prevents DoS (the 6397 assertions could call abort()). 6398 [Arne Ansper <arne (a] ats.cyber.ee>, Bodo Moeller] 6399 6400 Changes between 0.9.6d and 0.9.6e [30 Jul 2002] 6401 6402 *) Add various sanity checks to asn1_get_length() to reject 6403 the ASN1 length bytes if they exceed sizeof(long), will appear 6404 negative or the content length exceeds the length of the 6405 supplied buffer. 6406 [Steve Henson, Adi Stav <stav (a] mercury.co.il>, James Yonan <jim (a] ntlp.com>] 6407 6408 *) Fix cipher selection routines: ciphers without encryption had no flags 6409 for the cipher strength set and where therefore not handled correctly 6410 by the selection routines (PR #130). 6411 [Lutz Jaenicke] 6412 6413 *) Fix EVP_dsa_sha macro. 6414 [Nils Larsch] 6415 6416 *) New option 6417 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS 6418 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure 6419 that was added in OpenSSL 0.9.6d. 6420 6421 As the countermeasure turned out to be incompatible with some 6422 broken SSL implementations, the new option is part of SSL_OP_ALL. 6423 SSL_OP_ALL is usually employed when compatibility with weird SSL 6424 implementations is desired (e.g. '-bugs' option to 's_client' and 6425 's_server'), so the new option is automatically set in many 6426 applications. 6427 [Bodo Moeller] 6428 6429 *) Changes in security patch: 6430 6431 Changes marked "(CHATS)" were sponsored by the Defense Advanced 6432 Research Projects Agency (DARPA) and Air Force Research Laboratory, 6433 Air Force Materiel Command, USAF, under agreement number 6434 F30602-01-2-0537. 6435 6436 *) Add various sanity checks to asn1_get_length() to reject 6437 the ASN1 length bytes if they exceed sizeof(long), will appear 6438 negative or the content length exceeds the length of the 6439 supplied buffer. (CVE-2002-0659) 6440 [Steve Henson, Adi Stav <stav (a] mercury.co.il>, James Yonan <jim (a] ntlp.com>] 6441 6442 *) Assertions for various potential buffer overflows, not known to 6443 happen in practice. 6444 [Ben Laurie (CHATS)] 6445 6446 *) Various temporary buffers to hold ASCII versions of integers were 6447 too small for 64 bit platforms. (CVE-2002-0655) 6448 [Matthew Byng-Maddick <mbm (a] aldigital.co.uk> and Ben Laurie (CHATS)> 6449 6450 *) Remote buffer overflow in SSL3 protocol - an attacker could 6451 supply an oversized session ID to a client. (CVE-2002-0656) 6452 [Ben Laurie (CHATS)] 6453 6454 *) Remote buffer overflow in SSL2 protocol - an attacker could 6455 supply an oversized client master key. (CVE-2002-0656) 6456 [Ben Laurie (CHATS)] 6457 6458 Changes between 0.9.6c and 0.9.6d [9 May 2002] 6459 6460 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not 6461 encoded as NULL) with id-dsa-with-sha1. 6462 [Nils Larsch <nla (a] trustcenter.de>; problem pointed out by Bodo Moeller] 6463 6464 *) Check various X509_...() return values in apps/req.c. 6465 [Nils Larsch <nla (a] trustcenter.de>] 6466 6467 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines: 6468 an end-of-file condition would erronously be flagged, when the CRLF 6469 was just at the end of a processed block. The bug was discovered when 6470 processing data through a buffering memory BIO handing the data to a 6471 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov 6472 <ptsekov (a] syntrex.com> and Nedelcho Stanev. 6473 [Lutz Jaenicke] 6474 6475 *) Implement a countermeasure against a vulnerability recently found 6476 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment 6477 before application data chunks to avoid the use of known IVs 6478 with data potentially chosen by the attacker. 6479 [Bodo Moeller] 6480 6481 *) Fix length checks in ssl3_get_client_hello(). 6482 [Bodo Moeller] 6483 6484 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently 6485 to prevent ssl3_read_internal() from incorrectly assuming that 6486 ssl3_read_bytes() found application data while handshake 6487 processing was enabled when in fact s->s3->in_read_app_data was 6488 merely automatically cleared during the initial handshake. 6489 [Bodo Moeller; problem pointed out by Arne Ansper <arne (a] ats.cyber.ee>] 6490 6491 *) Fix object definitions for Private and Enterprise: they were not 6492 recognized in their shortname (=lowercase) representation. Extend 6493 obj_dat.pl to issue an error when using undefined keywords instead 6494 of silently ignoring the problem (Svenning Sorensen 6495 <sss (a] sss.dnsalias.net>). 6496 [Lutz Jaenicke] 6497 6498 *) Fix DH_generate_parameters() so that it works for 'non-standard' 6499 generators, i.e. generators other than 2 and 5. (Previously, the 6500 code did not properly initialise the 'add' and 'rem' values to 6501 BN_generate_prime().) 6502 6503 In the new general case, we do not insist that 'generator' is 6504 actually a primitive root: This requirement is rather pointless; 6505 a generator of the order-q subgroup is just as good, if not 6506 better. 6507 [Bodo Moeller] 6508 6509 *) Map new X509 verification errors to alerts. Discovered and submitted by 6510 Tom Wu <tom (a] arcot.com>. 6511 [Lutz Jaenicke] 6512 6513 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from 6514 returning non-zero before the data has been completely received 6515 when using non-blocking I/O. 6516 [Bodo Moeller; problem pointed out by John Hughes] 6517 6518 *) Some of the ciphers missed the strength entry (SSL_LOW etc). 6519 [Ben Laurie, Lutz Jaenicke] 6520 6521 *) Fix bug in SSL_clear(): bad sessions were not removed (found by 6522 Yoram Zahavi <YoramZ (a] gilian.com>). 6523 [Lutz Jaenicke] 6524 6525 *) Add information about CygWin 1.3 and on, and preserve proper 6526 configuration for the versions before that. 6527 [Corinna Vinschen <vinschen (a] redhat.com> and Richard Levitte] 6528 6529 *) Make removal from session cache (SSL_CTX_remove_session()) more robust: 6530 check whether we deal with a copy of a session and do not delete from 6531 the cache in this case. Problem reported by "Izhar Shoshani Levi" 6532 <izhar (a] checkpoint.com>. 6533 [Lutz Jaenicke] 6534 6535 *) Do not store session data into the internal session cache, if it 6536 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP 6537 flag is set). Proposed by Aslam <aslam (a] funk.com>. 6538 [Lutz Jaenicke] 6539 6540 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested 6541 value is 0. 6542 [Richard Levitte] 6543 6544 *) [In 0.9.6d-engine release:] 6545 Fix a crashbug and a logic bug in hwcrhk_load_pubkey(). 6546 [Toomas Kiisk <vix (a] cyber.ee> via Richard Levitte] 6547 6548 *) Add the configuration target linux-s390x. 6549 [Neale Ferguson <Neale.Ferguson (a] SoftwareAG-USA.com> via Richard Levitte] 6550 6551 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of 6552 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag 6553 variable as an indication that a ClientHello message has been 6554 received. As the flag value will be lost between multiple 6555 invocations of ssl3_accept when using non-blocking I/O, the 6556 function may not be aware that a handshake has actually taken 6557 place, thus preventing a new session from being added to the 6558 session cache. 6559 6560 To avoid this problem, we now set s->new_session to 2 instead of 6561 using a local variable. 6562 [Lutz Jaenicke, Bodo Moeller] 6563 6564 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c) 6565 if the SSL_R_LENGTH_MISMATCH error is detected. 6566 [Geoff Thorpe, Bodo Moeller] 6567 6568 *) New 'shared_ldflag' column in Configure platform table. 6569 [Richard Levitte] 6570 6571 *) Fix EVP_CIPHER_mode macro. 6572 ["Dan S. Camper" <dan (a] bti.net>] 6573 6574 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown 6575 type, we must throw them away by setting rr->length to 0. 6576 [D P Chang <dpc (a] qualys.com>] 6577 6578 Changes between 0.9.6b and 0.9.6c [21 dec 2001] 6579 6580 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl 6581 <Dominikus.Scherkl (a] biodata.com>. (The previous implementation 6582 worked incorrectly for those cases where range = 10..._2 and 6583 3*range is two bits longer than range.) 6584 [Bodo Moeller] 6585 6586 *) Only add signing time to PKCS7 structures if it is not already 6587 present. 6588 [Steve Henson] 6589 6590 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce", 6591 OBJ_ld_ce should be OBJ_id_ce. 6592 Also some ip-pda OIDs in crypto/objects/objects.txt were 6593 incorrect (cf. RFC 3039). 6594 [Matt Cooper, Frederic Giudicelli, Bodo Moeller] 6595 6596 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid() 6597 returns early because it has nothing to do. 6598 [Andy Schneider <andy.schneider (a] bjss.co.uk>] 6599 6600 *) [In 0.9.6c-engine release:] 6601 Fix mutex callback return values in crypto/engine/hw_ncipher.c. 6602 [Andy Schneider <andy.schneider (a] bjss.co.uk>] 6603 6604 *) [In 0.9.6c-engine release:] 6605 Add support for Cryptographic Appliance's keyserver technology. 6606 (Use engine 'keyclient') 6607 [Cryptographic Appliances and Geoff Thorpe] 6608 6609 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89' 6610 is called via tools/c89.sh because arguments have to be 6611 rearranged (all '-L' options must appear before the first object 6612 modules). 6613 [Richard Shapiro <rshapiro (a] abinitio.com>] 6614 6615 *) [In 0.9.6c-engine release:] 6616 Add support for Broadcom crypto accelerator cards, backported 6617 from 0.9.7. 6618 [Broadcom, Nalin Dahyabhai <nalin (a] redhat.com>, Mark Cox] 6619 6620 *) [In 0.9.6c-engine release:] 6621 Add support for SureWare crypto accelerator cards from 6622 Baltimore Technologies. (Use engine 'sureware') 6623 [Baltimore Technologies and Mark Cox] 6624 6625 *) [In 0.9.6c-engine release:] 6626 Add support for crypto accelerator cards from Accelerated 6627 Encryption Processing, www.aep.ie. (Use engine 'aep') 6628 [AEP Inc. and Mark Cox] 6629 6630 *) Add a configuration entry for gcc on UnixWare. 6631 [Gary Benson <gbenson (a] redhat.com>] 6632 6633 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake 6634 messages are stored in a single piece (fixed-length part and 6635 variable-length part combined) and fix various bugs found on the way. 6636 [Bodo Moeller] 6637 6638 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname() 6639 instead. BIO_gethostbyname() does not know what timeouts are 6640 appropriate, so entries would stay in cache even when they have 6641 become invalid. 6642 [Bodo Moeller; problem pointed out by Rich Salz <rsalz (a] zolera.com> 6643 6644 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when 6645 faced with a pathologically small ClientHello fragment that does 6646 not contain client_version: Instead of aborting with an error, 6647 simply choose the highest available protocol version (i.e., 6648 TLS 1.0 unless it is disabled). In practice, ClientHello 6649 messages are never sent like this, but this change gives us 6650 strictly correct behaviour at least for TLS. 6651 [Bodo Moeller] 6652 6653 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear() 6654 never resets s->method to s->ctx->method when called from within 6655 one of the SSL handshake functions. 6656 [Bodo Moeller; problem pointed out by Niko Baric] 6657 6658 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert 6659 (sent using the client's version number) if client_version is 6660 smaller than the protocol version in use. Also change 6661 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if 6662 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then 6663 the client will at least see that alert. 6664 [Bodo Moeller] 6665 6666 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation 6667 correctly. 6668 [Bodo Moeller] 6669 6670 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a 6671 client receives HelloRequest while in a handshake. 6672 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider (a] bjss.co.uk>] 6673 6674 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C 6675 should end in 'break', not 'goto end' which circuments various 6676 cleanups done in state SSL_ST_OK. But session related stuff 6677 must be disabled for SSL_ST_OK in the case that we just sent a 6678 HelloRequest. 6679 6680 Also avoid some overhead by not calling ssl_init_wbio_buffer() 6681 before just sending a HelloRequest. 6682 [Bodo Moeller, Eric Rescorla <ekr (a] rtfm.com>] 6683 6684 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't 6685 reveal whether illegal block cipher padding was found or a MAC 6686 verification error occured. (Neither SSLerr() codes nor alerts 6687 are directly visible to potential attackers, but the information 6688 may leak via logfiles.) 6689 6690 Similar changes are not required for the SSL 2.0 implementation 6691 because the number of padding bytes is sent in clear for SSL 2.0, 6692 and the extra bytes are just ignored. However ssl/s2_pkt.c 6693 failed to verify that the purported number of padding bytes is in 6694 the legal range. 6695 [Bodo Moeller] 6696 6697 *) Add OpenUNIX-8 support including shared libraries 6698 (Boyd Lynn Gerber <gerberb (a] zenez.com>). 6699 [Lutz Jaenicke] 6700 6701 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid 6702 'wristwatch attack' using huge encoding parameters (cf. 6703 James H. Manger's CRYPTO 2001 paper). Note that the 6704 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use 6705 encoding parameters and hence was not vulnerable. 6706 [Bodo Moeller] 6707 6708 *) BN_sqr() bug fix. 6709 [Ulf Mller, reported by Jim Ellis <jim.ellis (a] cavium.com>] 6710 6711 *) Rabin-Miller test analyses assume uniformly distributed witnesses, 6712 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand() 6713 followed by modular reduction. 6714 [Bodo Moeller; pointed out by Adam Young <AYoung1 (a] NCSUS.JNJ.COM>] 6715 6716 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range() 6717 equivalent based on BN_pseudo_rand() instead of BN_rand(). 6718 [Bodo Moeller] 6719 6720 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB). 6721 This function was broken, as the check for a new client hello message 6722 to handle SGC did not allow these large messages. 6723 (Tracked down by "Douglas E. Engert" <deengert (a] anl.gov>.) 6724 [Lutz Jaenicke] 6725 6726 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long](). 6727 [Lutz Jaenicke] 6728 6729 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl() 6730 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton (a] netopia.com>). 6731 [Lutz Jaenicke] 6732 6733 *) Rework the configuration and shared library support for Tru64 Unix. 6734 The configuration part makes use of modern compiler features and 6735 still retains old compiler behavior for those that run older versions 6736 of the OS. The shared library support part includes a variant that 6737 uses the RPATH feature, and is available through the special 6738 configuration target "alpha-cc-rpath", which will never be selected 6739 automatically. 6740 [Tim Mooney <mooney (a] dogbert.cc.ndsu.NoDak.edu> via Richard Levitte] 6741 6742 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message() 6743 with the same message size as in ssl3_get_certificate_request(). 6744 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest 6745 messages might inadvertently be reject as too long. 6746 [Petr Lampa <lampa (a] fee.vutbr.cz>] 6747 6748 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX). 6749 [Andy Polyakov] 6750 6751 *) Modified SSL library such that the verify_callback that has been set 6752 specificly for an SSL object with SSL_set_verify() is actually being 6753 used. Before the change, a verify_callback set with this function was 6754 ignored and the verify_callback() set in the SSL_CTX at the time of 6755 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced 6756 to allow the necessary settings. 6757 [Lutz Jaenicke] 6758 6759 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c 6760 explicitly to NULL, as at least on Solaris 8 this seems not always to be 6761 done automatically (in contradiction to the requirements of the C 6762 standard). This made problems when used from OpenSSH. 6763 [Lutz Jaenicke] 6764 6765 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored 6766 dh->length and always used 6767 6768 BN_rand_range(priv_key, dh->p). 6769 6770 BN_rand_range() is not necessary for Diffie-Hellman, and this 6771 specific range makes Diffie-Hellman unnecessarily inefficient if 6772 dh->length (recommended exponent length) is much smaller than the 6773 length of dh->p. We could use BN_rand_range() if the order of 6774 the subgroup was stored in the DH structure, but we only have 6775 dh->length. 6776 6777 So switch back to 6778 6779 BN_rand(priv_key, l, ...) 6780 6781 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1 6782 otherwise. 6783 [Bodo Moeller] 6784 6785 *) In 6786 6787 RSA_eay_public_encrypt 6788 RSA_eay_private_decrypt 6789 RSA_eay_private_encrypt (signing) 6790 RSA_eay_public_decrypt (signature verification) 6791 6792 (default implementations for RSA_public_encrypt, 6793 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt), 6794 always reject numbers >= n. 6795 [Bodo Moeller] 6796 6797 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2 6798 to synchronize access to 'locking_thread'. This is necessary on 6799 systems where access to 'locking_thread' (an 'unsigned long' 6800 variable) is not atomic. 6801 [Bodo Moeller] 6802 6803 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID 6804 *before* setting the 'crypto_lock_rand' flag. The previous code had 6805 a race condition if 0 is a valid thread ID. 6806 [Travis Vitek <vitek (a] roguewave.com>] 6807 6808 *) Add support for shared libraries under Irix. 6809 [Albert Chin-A-Young <china (a] thewrittenword.com>] 6810 6811 *) Add configuration option to build on Linux on both big-endian and 6812 little-endian MIPS. 6813 [Ralf Baechle <ralf (a] uni-koblenz.de>] 6814 6815 *) Add the possibility to create shared libraries on HP-UX. 6816 [Richard Levitte] 6817 6818 Changes between 0.9.6a and 0.9.6b [9 Jul 2001] 6819 6820 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c) 6821 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by 6822 Markku-Juhani O. Saarinen <markku-juhani.saarinen (a] nokia.com>: 6823 PRNG state recovery was possible based on the output of 6824 one PRNG request appropriately sized to gain knowledge on 6825 'md' followed by enough consecutive 1-byte PRNG requests 6826 to traverse all of 'state'. 6827 6828 1. When updating 'md_local' (the current thread's copy of 'md') 6829 during PRNG output generation, hash all of the previous 6830 'md_local' value, not just the half used for PRNG output. 6831 6832 2. Make the number of bytes from 'state' included into the hash 6833 independent from the number of PRNG bytes requested. 6834 6835 The first measure alone would be sufficient to avoid 6836 Markku-Juhani's attack. (Actually it had never occurred 6837 to me that the half of 'md_local' used for chaining was the 6838 half from which PRNG output bytes were taken -- I had always 6839 assumed that the secret half would be used.) The second 6840 measure makes sure that additional data from 'state' is never 6841 mixed into 'md_local' in small portions; this heuristically 6842 further strengthens the PRNG. 6843 [Bodo Moeller] 6844 6845 *) Fix crypto/bn/asm/mips3.s. 6846 [Andy Polyakov] 6847 6848 *) When only the key is given to "enc", the IV is undefined. Print out 6849 an error message in this case. 6850 [Lutz Jaenicke] 6851 6852 *) Handle special case when X509_NAME is empty in X509 printing routines. 6853 [Steve Henson] 6854 6855 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are 6856 positive and less than q. 6857 [Bodo Moeller] 6858 6859 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is 6860 used: it isn't thread safe and the add_lock_callback should handle 6861 that itself. 6862 [Paul Rose <Paul.Rose (a] bridge.com>] 6863 6864 *) Verify that incoming data obeys the block size in 6865 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c). 6866 [Bodo Moeller] 6867 6868 *) Fix OAEP check. 6869 [Ulf Mller, Bodo Mller] 6870 6871 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5 6872 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5 6873 when fixing the server behaviour for backwards-compatible 'client 6874 hello' messages. (Note that the attack is impractical against 6875 SSL 3.0 and TLS 1.0 anyway because length and version checking 6876 means that the probability of guessing a valid ciphertext is 6877 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98 6878 paper.) 6879 6880 Before 0.9.5, the countermeasure (hide the error by generating a 6881 random 'decryption result') did not work properly because 6882 ERR_clear_error() was missing, meaning that SSL_get_error() would 6883 detect the supposedly ignored error. 6884 6885 Both problems are now fixed. 6886 [Bodo Moeller] 6887 6888 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096 6889 (previously it was 1024). 6890 [Bodo Moeller] 6891 6892 *) Fix for compatibility mode trust settings: ignore trust settings 6893 unless some valid trust or reject settings are present. 6894 [Steve Henson] 6895 6896 *) Fix for blowfish EVP: its a variable length cipher. 6897 [Steve Henson] 6898 6899 *) Fix various bugs related to DSA S/MIME verification. Handle missing 6900 parameters in DSA public key structures and return an error in the 6901 DSA routines if parameters are absent. 6902 [Steve Henson] 6903 6904 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd" 6905 in the current directory if neither $RANDFILE nor $HOME was set. 6906 RAND_file_name() in 0.9.6a returned NULL in this case. This has 6907 caused some confusion to Windows users who haven't defined $HOME. 6908 Thus RAND_file_name() is changed again: e_os.h can define a 6909 DEFAULT_HOME, which will be used if $HOME is not set. 6910 For Windows, we use "C:"; on other platforms, we still require 6911 environment variables. 6912 6913 *) Move 'if (!initialized) RAND_poll()' into regions protected by 6914 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids 6915 having multiple threads call RAND_poll() concurrently. 6916 [Bodo Moeller] 6917 6918 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a 6919 combination of a flag and a thread ID variable. 6920 Otherwise while one thread is in ssleay_rand_bytes (which sets the 6921 flag), *other* threads can enter ssleay_add_bytes without obeying 6922 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock 6923 that they do not hold after the first thread unsets add_do_not_lock). 6924 [Bodo Moeller] 6925 6926 *) Change bctest again: '-x' expressions are not available in all 6927 versions of 'test'. 6928 [Bodo Moeller] 6929 6930 Changes between 0.9.6 and 0.9.6a [5 Apr 2001] 6931 6932 *) Fix a couple of memory leaks in PKCS7_dataDecode() 6933 [Steve Henson, reported by Heyun Zheng <hzheng (a] atdsprint.com>] 6934 6935 *) Change Configure and Makefiles to provide EXE_EXT, which will contain 6936 the default extension for executables, if any. Also, make the perl 6937 scripts that use symlink() to test if it really exists and use "cp" 6938 if it doesn't. All this made OpenSSL compilable and installable in 6939 CygWin. 6940 [Richard Levitte] 6941 6942 *) Fix for asn1_GetSequence() for indefinite length constructed data. 6943 If SEQUENCE is length is indefinite just set c->slen to the total 6944 amount of data available. 6945 [Steve Henson, reported by shige (a] FreeBSD.org] 6946 [This change does not apply to 0.9.7.] 6947 6948 *) Change bctest to avoid here-documents inside command substitution 6949 (workaround for FreeBSD /bin/sh bug). 6950 For compatibility with Ultrix, avoid shell functions (introduced 6951 in the bctest version that searches along $PATH). 6952 [Bodo Moeller] 6953 6954 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes 6955 with des_encrypt() defined on some operating systems, like Solaris 6956 and UnixWare. 6957 [Richard Levitte] 6958 6959 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton: 6960 On the Importance of Eliminating Errors in Cryptographic 6961 Computations, J. Cryptology 14 (2001) 2, 101-119, 6962 http://theory.stanford.edu/~dabo/papers/faults.ps.gz). 6963 [Ulf Moeller] 6964 6965 *) MIPS assembler BIGNUM division bug fix. 6966 [Andy Polyakov] 6967 6968 *) Disabled incorrect Alpha assembler code. 6969 [Richard Levitte] 6970 6971 *) Fix PKCS#7 decode routines so they correctly update the length 6972 after reading an EOC for the EXPLICIT tag. 6973 [Steve Henson] 6974 [This change does not apply to 0.9.7.] 6975 6976 *) Fix bug in PKCS#12 key generation routines. This was triggered 6977 if a 3DES key was generated with a 0 initial byte. Include 6978 PKCS12_BROKEN_KEYGEN compilation option to retain the old 6979 (but broken) behaviour. 6980 [Steve Henson] 6981 6982 *) Enhance bctest to search for a working bc along $PATH and print 6983 it when found. 6984 [Tim Rice <tim (a] multitalents.net> via Richard Levitte] 6985 6986 *) Fix memory leaks in err.c: free err_data string if necessary; 6987 don't write to the wrong index in ERR_set_error_data. 6988 [Bodo Moeller] 6989 6990 *) Implement ssl23_peek (analogous to ssl23_read), which previously 6991 did not exist. 6992 [Bodo Moeller] 6993 6994 *) Replace rdtsc with _emit statements for VC++ version 5. 6995 [Jeremy Cooper <jeremy (a] baymoo.org>] 6996 6997 *) Make it possible to reuse SSLv2 sessions. 6998 [Richard Levitte] 6999 7000 *) In copy_email() check for >= 0 as a return value for 7001 X509_NAME_get_index_by_NID() since 0 is a valid index. 7002 [Steve Henson reported by Massimiliano Pala <madwolf (a] opensca.org>] 7003 7004 *) Avoid coredump with unsupported or invalid public keys by checking if 7005 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when 7006 PKCS7_verify() fails with non detached data. 7007 [Steve Henson] 7008 7009 *) Don't use getenv in library functions when run as setuid/setgid. 7010 New function OPENSSL_issetugid(). 7011 [Ulf Moeller] 7012 7013 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c) 7014 due to incorrect handling of multi-threading: 7015 7016 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl(). 7017 7018 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on(). 7019 7020 3. Count how many times MemCheck_off() has been called so that 7021 nested use can be treated correctly. This also avoids 7022 inband-signalling in the previous code (which relied on the 7023 assumption that thread ID 0 is impossible). 7024 [Bodo Moeller] 7025 7026 *) Add "-rand" option also to s_client and s_server. 7027 [Lutz Jaenicke] 7028 7029 *) Fix CPU detection on Irix 6.x. 7030 [Kurt Hockenbury <khockenb (a] stevens-tech.edu> and 7031 "Bruce W. Forsberg" <bruce.forsberg (a] baesystems.com>] 7032 7033 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME 7034 was empty. 7035 [Steve Henson] 7036 [This change does not apply to 0.9.7.] 7037 7038 *) Use the cached encoding of an X509_NAME structure rather than 7039 copying it. This is apparently the reason for the libsafe "errors" 7040 but the code is actually correct. 7041 [Steve Henson] 7042 7043 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent 7044 Bleichenbacher's DSA attack. 7045 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits 7046 to be set and top=0 forces the highest bit to be set; top=-1 is new 7047 and leaves the highest bit random. 7048 [Ulf Moeller, Bodo Moeller] 7049 7050 *) In the NCONF_...-based implementations for CONF_... queries 7051 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using 7052 a temporary CONF structure with the data component set to NULL 7053 (which gives segmentation faults in lh_retrieve). 7054 Instead, use NULL for the CONF pointer in CONF_get_string and 7055 CONF_get_number (which may use environment variables) and directly 7056 return NULL from CONF_get_section. 7057 [Bodo Moeller] 7058 7059 *) Fix potential buffer overrun for EBCDIC. 7060 [Ulf Moeller] 7061 7062 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign 7063 keyUsage if basicConstraints absent for a CA. 7064 [Steve Henson] 7065 7066 *) Make SMIME_write_PKCS7() write mail header values with a format that 7067 is more generally accepted (no spaces before the semicolon), since 7068 some programs can't parse those values properly otherwise. Also make 7069 sure BIO's that break lines after each write do not create invalid 7070 headers. 7071 [Richard Levitte] 7072 7073 *) Make the CRL encoding routines work with empty SEQUENCE OF. The 7074 macros previously used would not encode an empty SEQUENCE OF 7075 and break the signature. 7076 [Steve Henson] 7077 [This change does not apply to 0.9.7.] 7078 7079 *) Zero the premaster secret after deriving the master secret in 7080 DH ciphersuites. 7081 [Steve Henson] 7082 7083 *) Add some EVP_add_digest_alias registrations (as found in 7084 OpenSSL_add_all_digests()) to SSL_library_init() 7085 aka OpenSSL_add_ssl_algorithms(). This provides improved 7086 compatibility with peers using X.509 certificates 7087 with unconventional AlgorithmIdentifier OIDs. 7088 [Bodo Moeller] 7089 7090 *) Fix for Irix with NO_ASM. 7091 ["Bruce W. Forsberg" <bruce.forsberg (a] baesystems.com>] 7092 7093 *) ./config script fixes. 7094 [Ulf Moeller, Richard Levitte] 7095 7096 *) Fix 'openssl passwd -1'. 7097 [Bodo Moeller] 7098 7099 *) Change PKCS12_key_gen_asc() so it can cope with non null 7100 terminated strings whose length is passed in the passlen 7101 parameter, for example from PEM callbacks. This was done 7102 by adding an extra length parameter to asc2uni(). 7103 [Steve Henson, reported by <oddissey (a] samsung.co.kr>] 7104 7105 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn 7106 call failed, free the DSA structure. 7107 [Bodo Moeller] 7108 7109 *) Fix to uni2asc() to cope with zero length Unicode strings. 7110 These are present in some PKCS#12 files. 7111 [Steve Henson] 7112 7113 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c). 7114 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits 7115 when writing a 32767 byte record. 7116 [Bodo Moeller; problem reported by Eric Day <eday (a] concentric.net>] 7117 7118 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c), 7119 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}. 7120 7121 (RSA objects have a reference count access to which is protected 7122 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c], 7123 so they are meant to be shared between threads.) 7124 [Bodo Moeller, Geoff Thorpe; original patch submitted by 7125 "Reddie, Steven" <Steven.Reddie (a] ca.com>] 7126 7127 *) Fix a deadlock in CRYPTO_mem_leaks(). 7128 [Bodo Moeller] 7129 7130 *) Use better test patterns in bntest. 7131 [Ulf Mller] 7132 7133 *) rand_win.c fix for Borland C. 7134 [Ulf Mller] 7135 7136 *) BN_rshift bugfix for n == 0. 7137 [Bodo Moeller] 7138 7139 *) Add a 'bctest' script that checks for some known 'bc' bugs 7140 so that 'make test' does not abort just because 'bc' is broken. 7141 [Bodo Moeller] 7142 7143 *) Store verify_result within SSL_SESSION also for client side to 7144 avoid potential security hole. (Re-used sessions on the client side 7145 always resulted in verify_result==X509_V_OK, not using the original 7146 result of the server certificate verification.) 7147 [Lutz Jaenicke] 7148 7149 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type 7150 SSL3_RT_APPLICATION_DATA, return 0. 7151 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true. 7152 [Bodo Moeller] 7153 7154 *) Fix SSL_peek: 7155 Both ssl2_peek and ssl3_peek, which were totally broken in earlier 7156 releases, have been re-implemented by renaming the previous 7157 implementations of ssl2_read and ssl3_read to ssl2_read_internal 7158 and ssl3_read_internal, respectively, and adding 'peek' parameters 7159 to them. The new ssl[23]_{read,peek} functions are calls to 7160 ssl[23]_read_internal with the 'peek' flag set appropriately. 7161 A 'peek' parameter has also been added to ssl3_read_bytes, which 7162 does the actual work for ssl3_read_internal. 7163 [Bodo Moeller] 7164 7165 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling 7166 the method-specific "init()" handler. Also clean up ex_data after 7167 calling the method-specific "finish()" handler. Previously, this was 7168 happening the other way round. 7169 [Geoff Thorpe] 7170 7171 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16. 7172 The previous value, 12, was not always sufficient for BN_mod_exp(). 7173 [Bodo Moeller] 7174 7175 *) Make sure that shared libraries get the internal name engine with 7176 the full version number and not just 0. This should mark the 7177 shared libraries as not backward compatible. Of course, this should 7178 be changed again when we can guarantee backward binary compatibility. 7179 [Richard Levitte] 7180 7181 *) Fix typo in get_cert_by_subject() in by_dir.c 7182 [Jean-Marc Desperrier <jean-marc.desperrier (a] certplus.com>] 7183 7184 *) Rework the system to generate shared libraries: 7185 7186 - Make note of the expected extension for the shared libraries and 7187 if there is a need for symbolic links from for example libcrypto.so.0 7188 to libcrypto.so.0.9.7. There is extended info in Configure for 7189 that. 7190 7191 - Make as few rebuilds of the shared libraries as possible. 7192 7193 - Still avoid linking the OpenSSL programs with the shared libraries. 7194 7195 - When installing, install the shared libraries separately from the 7196 static ones. 7197 [Richard Levitte] 7198 7199 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument. 7200 7201 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new 7202 and not in SSL_clear because the latter is also used by the 7203 accept/connect functions; previously, the settings made by 7204 SSL_set_read_ahead would be lost during the handshake. 7205 [Bodo Moeller; problems reported by Anders Gertz <gertz (a] epact.se>] 7206 7207 *) Correct util/mkdef.pl to be selective about disabled algorithms. 7208 Previously, it would create entries for disableed algorithms no 7209 matter what. 7210 [Richard Levitte] 7211 7212 *) Added several new manual pages for SSL_* function. 7213 [Lutz Jaenicke] 7214 7215 Changes between 0.9.5a and 0.9.6 [24 Sep 2000] 7216 7217 *) In ssl23_get_client_hello, generate an error message when faced 7218 with an initial SSL 3.0/TLS record that is too small to contain the 7219 first two bytes of the ClientHello message, i.e. client_version. 7220 (Note that this is a pathologic case that probably has never happened 7221 in real life.) The previous approach was to use the version number 7222 from the record header as a substitute; but our protocol choice 7223 should not depend on that one because it is not authenticated 7224 by the Finished messages. 7225 [Bodo Moeller] 7226 7227 *) More robust randomness gathering functions for Windows. 7228 [Jeffrey Altman <jaltman (a] columbia.edu>] 7229 7230 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is 7231 not set then we don't setup the error code for issuer check errors 7232 to avoid possibly overwriting other errors which the callback does 7233 handle. If an application does set the flag then we assume it knows 7234 what it is doing and can handle the new informational codes 7235 appropriately. 7236 [Steve Henson] 7237 7238 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for 7239 a general "ANY" type, as such it should be able to decode anything 7240 including tagged types. However it didn't check the class so it would 7241 wrongly interpret tagged types in the same way as their universal 7242 counterpart and unknown types were just rejected. Changed so that the 7243 tagged and unknown types are handled in the same way as a SEQUENCE: 7244 that is the encoding is stored intact. There is also a new type 7245 "V_ASN1_OTHER" which is used when the class is not universal, in this 7246 case we have no idea what the actual type is so we just lump them all 7247 together. 7248 [Steve Henson] 7249 7250 *) On VMS, stdout may very well lead to a file that is written to 7251 in a record-oriented fashion. That means that every write() will 7252 write a separate record, which will be read separately by the 7253 programs trying to read from it. This can be very confusing. 7254 7255 The solution is to put a BIO filter in the way that will buffer 7256 text until a linefeed is reached, and then write everything a 7257 line at a time, so every record written will be an actual line, 7258 not chunks of lines and not (usually doesn't happen, but I've 7259 seen it once) several lines in one record. BIO_f_linebuffer() is 7260 the answer. 7261 7262 Currently, it's a VMS-only method, because that's where it has 7263 been tested well enough. 7264 [Richard Levitte] 7265 7266 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery, 7267 it can return incorrect results. 7268 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a, 7269 but it was in 0.9.6-beta[12].) 7270 [Bodo Moeller] 7271 7272 *) Disable the check for content being present when verifying detached 7273 signatures in pk7_smime.c. Some versions of Netscape (wrongly) 7274 include zero length content when signing messages. 7275 [Steve Henson] 7276 7277 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR 7278 BIO_ctrl (for BIO pairs). 7279 [Bodo Mller] 7280 7281 *) Add DSO method for VMS. 7282 [Richard Levitte] 7283 7284 *) Bug fix: Montgomery multiplication could produce results with the 7285 wrong sign. 7286 [Ulf Mller] 7287 7288 *) Add RPM specification openssl.spec and modify it to build three 7289 packages. The default package contains applications, application 7290 documentation and run-time libraries. The devel package contains 7291 include files, static libraries and function documentation. The 7292 doc package contains the contents of the doc directory. The original 7293 openssl.spec was provided by Damien Miller <djm (a] mindrot.org>. 7294 [Richard Levitte] 7295 7296 *) Add a large number of documentation files for many SSL routines. 7297 [Lutz Jaenicke <Lutz.Jaenicke (a] aet.TU-Cottbus.DE>] 7298 7299 *) Add a configuration entry for Sony News 4. 7300 [NAKAJI Hiroyuki <nakaji (a] tutrp.tut.ac.jp>] 7301 7302 *) Don't set the two most significant bits to one when generating a 7303 random number < q in the DSA library. 7304 [Ulf Mller] 7305 7306 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default 7307 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if 7308 the underlying transport is blocking) if a handshake took place. 7309 (The default behaviour is needed by applications such as s_client 7310 and s_server that use select() to determine when to use SSL_read; 7311 but for applications that know in advance when to expect data, it 7312 just makes things more complicated.) 7313 [Bodo Moeller] 7314 7315 *) Add RAND_egd_bytes(), which gives control over the number of bytes read 7316 from EGD. 7317 [Ben Laurie] 7318 7319 *) Add a few more EBCDIC conditionals that make `req' and `x509' 7320 work better on such systems. 7321 [Martin Kraemer <Martin.Kraemer (a] MchP.Siemens.De>] 7322 7323 *) Add two demo programs for PKCS12_parse() and PKCS12_create(). 7324 Update PKCS12_parse() so it copies the friendlyName and the 7325 keyid to the certificates aux info. 7326 [Steve Henson] 7327 7328 *) Fix bug in PKCS7_verify() which caused an infinite loop 7329 if there was more than one signature. 7330 [Sven Uszpelkat <su (a] celocom.de>] 7331 7332 *) Major change in util/mkdef.pl to include extra information 7333 about each symbol, as well as presentig variables as well 7334 as functions. This change means that there's n more need 7335 to rebuild the .num files when some algorithms are excluded. 7336 [Richard Levitte] 7337 7338 *) Allow the verify time to be set by an application, 7339 rather than always using the current time. 7340 [Steve Henson] 7341 7342 *) Phase 2 verify code reorganisation. The certificate 7343 verify code now looks up an issuer certificate by a 7344 number of criteria: subject name, authority key id 7345 and key usage. It also verifies self signed certificates 7346 by the same criteria. The main comparison function is 7347 X509_check_issued() which performs these checks. 7348 7349 Lot of changes were necessary in order to support this 7350 without completely rewriting the lookup code. 7351 7352 Authority and subject key identifier are now cached. 7353 7354 The LHASH 'certs' is X509_STORE has now been replaced 7355 by a STACK_OF(X509_OBJECT). This is mainly because an 7356 LHASH can't store or retrieve multiple objects with 7357 the same hash value. 7358 7359 As a result various functions (which were all internal 7360 use only) have changed to handle the new X509_STORE 7361 structure. This will break anything that messed round 7362 with X509_STORE internally. 7363 7364 The functions X509_STORE_add_cert() now checks for an 7365 exact match, rather than just subject name. 7366 7367 The X509_STORE API doesn't directly support the retrieval 7368 of multiple certificates matching a given criteria, however 7369 this can be worked round by performing a lookup first 7370 (which will fill the cache with candidate certificates) 7371 and then examining the cache for matches. This is probably 7372 the best we can do without throwing out X509_LOOKUP 7373 entirely (maybe later...). 7374 7375 The X509_VERIFY_CTX structure has been enhanced considerably. 7376 7377 All certificate lookup operations now go via a get_issuer() 7378 callback. Although this currently uses an X509_STORE it 7379 can be replaced by custom lookups. This is a simple way 7380 to bypass the X509_STORE hackery necessary to make this 7381 work and makes it possible to use more efficient techniques 7382 in future. A very simple version which uses a simple 7383 STACK for its trusted certificate store is also provided 7384 using X509_STORE_CTX_trusted_stack(). 7385 7386 The verify_cb() and verify() callbacks now have equivalents 7387 in the X509_STORE_CTX structure. 7388 7389 X509_STORE_CTX also has a 'flags' field which can be used 7390 to customise the verify behaviour. 7391 [Steve Henson] 7392 7393 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which 7394 excludes S/MIME capabilities. 7395 [Steve Henson] 7396 7397 *) When a certificate request is read in keep a copy of the 7398 original encoding of the signed data and use it when outputing 7399 again. Signatures then use the original encoding rather than 7400 a decoded, encoded version which may cause problems if the 7401 request is improperly encoded. 7402 [Steve Henson] 7403 7404 *) For consistency with other BIO_puts implementations, call 7405 buffer_write(b, ...) directly in buffer_puts instead of calling 7406 BIO_write(b, ...). 7407 7408 In BIO_puts, increment b->num_write as in BIO_write. 7409 [Peter.Sylvester (a] EdelWeb.fr] 7410 7411 *) Fix BN_mul_word for the case where the word is 0. (We have to use 7412 BN_zero, we may not return a BIGNUM with an array consisting of 7413 words set to zero.) 7414 [Bodo Moeller] 7415 7416 *) Avoid calling abort() from within the library when problems are 7417 detected, except if preprocessor symbols have been defined 7418 (such as REF_CHECK, BN_DEBUG etc.). 7419 [Bodo Moeller] 7420 7421 *) New openssl application 'rsautl'. This utility can be 7422 used for low level RSA operations. DER public key 7423 BIO/fp routines also added. 7424 [Steve Henson] 7425 7426 *) New Configure entry and patches for compiling on QNX 4. 7427 [Andreas Schneider <andreas (a] ds3.etech.fh-hamburg.de>] 7428 7429 *) A demo state-machine implementation was sponsored by 7430 Nuron (http://www.nuron.com/) and is now available in 7431 demos/state_machine. 7432 [Ben Laurie] 7433 7434 *) New options added to the 'dgst' utility for signature 7435 generation and verification. 7436 [Steve Henson] 7437 7438 *) Unrecognized PKCS#7 content types are now handled via a 7439 catch all ASN1_TYPE structure. This allows unsupported 7440 types to be stored as a "blob" and an application can 7441 encode and decode it manually. 7442 [Steve Henson] 7443 7444 *) Fix various signed/unsigned issues to make a_strex.c 7445 compile under VC++. 7446 [Oscar Jacobsson <oscar.jacobsson (a] celocom.com>] 7447 7448 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct 7449 length if passed a buffer. ASN1_INTEGER_to_BN failed 7450 if passed a NULL BN and its argument was negative. 7451 [Steve Henson, pointed out by Sven Heiberg <sven (a] tartu.cyber.ee>] 7452 7453 *) Modification to PKCS#7 encoding routines to output definite 7454 length encoding. Since currently the whole structures are in 7455 memory there's not real point in using indefinite length 7456 constructed encoding. However if OpenSSL is compiled with 7457 the flag PKCS7_INDEFINITE_ENCODING the old form is used. 7458 [Steve Henson] 7459 7460 *) Added BIO_vprintf() and BIO_vsnprintf(). 7461 [Richard Levitte] 7462 7463 *) Added more prefixes to parse for in the the strings written 7464 through a logging bio, to cover all the levels that are available 7465 through syslog. The prefixes are now: 7466 7467 PANIC, EMERG, EMR => LOG_EMERG 7468 ALERT, ALR => LOG_ALERT 7469 CRIT, CRI => LOG_CRIT 7470 ERROR, ERR => LOG_ERR 7471 WARNING, WARN, WAR => LOG_WARNING 7472 NOTICE, NOTE, NOT => LOG_NOTICE 7473 INFO, INF => LOG_INFO 7474 DEBUG, DBG => LOG_DEBUG 7475 7476 and as before, if none of those prefixes are present at the 7477 beginning of the string, LOG_ERR is chosen. 7478 7479 On Win32, the LOG_* levels are mapped according to this: 7480 7481 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE 7482 LOG_WARNING => EVENTLOG_WARNING_TYPE 7483 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE 7484 7485 [Richard Levitte] 7486 7487 *) Made it possible to reconfigure with just the configuration 7488 argument "reconf" or "reconfigure". The command line arguments 7489 are stored in Makefile.ssl in the variable CONFIGURE_ARGS, 7490 and are retrieved from there when reconfiguring. 7491 [Richard Levitte] 7492 7493 *) MD4 implemented. 7494 [Assar Westerlund <assar (a] sics.se>, Richard Levitte] 7495 7496 *) Add the arguments -CAfile and -CApath to the pkcs12 utility. 7497 [Richard Levitte] 7498 7499 *) The obj_dat.pl script was messing up the sorting of object 7500 names. The reason was that it compared the quoted version 7501 of strings as a result "OCSP" > "OCSP Signing" because 7502 " > SPACE. Changed script to store unquoted versions of 7503 names and add quotes on output. It was also omitting some 7504 names from the lookup table if they were given a default 7505 value (that is if SN is missing it is given the same 7506 value as LN and vice versa), these are now added on the 7507 grounds that if an object has a name we should be able to 7508 look it up. Finally added warning output when duplicate 7509 short or long names are found. 7510 [Steve Henson] 7511 7512 *) Changes needed for Tandem NSK. 7513 [Scott Uroff <scott (a] xypro.com>] 7514 7515 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in 7516 RSA_padding_check_SSLv23(), special padding was never detected 7517 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol 7518 version rollback attacks was not effective. 7519 7520 In s23_clnt.c, don't use special rollback-attack detection padding 7521 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the 7522 client; similarly, in s23_srvr.c, don't do the rollback check if 7523 SSL 2.0 is the only protocol enabled in the server. 7524 [Bodo Moeller] 7525 7526 *) Make it possible to get hexdumps of unprintable data with 'openssl 7527 asn1parse'. By implication, the functions ASN1_parse_dump() and 7528 BIO_dump_indent() are added. 7529 [Richard Levitte] 7530 7531 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex() 7532 these print out strings and name structures based on various 7533 flags including RFC2253 support and proper handling of 7534 multibyte characters. Added options to the 'x509' utility 7535 to allow the various flags to be set. 7536 [Steve Henson] 7537 7538 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME. 7539 Also change the functions X509_cmp_current_time() and 7540 X509_gmtime_adj() work with an ASN1_TIME structure, 7541 this will enable certificates using GeneralizedTime in validity 7542 dates to be checked. 7543 [Steve Henson] 7544 7545 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid 7546 negative public key encodings) on by default, 7547 NO_NEG_PUBKEY_BUG can be set to disable it. 7548 [Steve Henson] 7549 7550 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT 7551 content octets. An i2c_ASN1_OBJECT is unnecessary because 7552 the encoding can be trivially obtained from the structure. 7553 [Steve Henson] 7554 7555 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock), 7556 not read locks (CRYPTO_r_[un]lock). 7557 [Bodo Moeller] 7558 7559 *) A first attempt at creating official support for shared 7560 libraries through configuration. I've kept it so the 7561 default is static libraries only, and the OpenSSL programs 7562 are always statically linked for now, but there are 7563 preparations for dynamic linking in place. 7564 This has been tested on Linux and Tru64. 7565 [Richard Levitte] 7566 7567 *) Randomness polling function for Win9x, as described in: 7568 Peter Gutmann, Software Generation of Practically Strong 7569 Random Numbers. 7570 [Ulf Mller] 7571 7572 *) Fix so PRNG is seeded in req if using an already existing 7573 DSA key. 7574 [Steve Henson] 7575 7576 *) New options to smime application. -inform and -outform 7577 allow alternative formats for the S/MIME message including 7578 PEM and DER. The -content option allows the content to be 7579 specified separately. This should allow things like Netscape 7580 form signing output easier to verify. 7581 [Steve Henson] 7582 7583 *) Fix the ASN1 encoding of tags using the 'long form'. 7584 [Steve Henson] 7585 7586 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT 7587 STRING types. These convert content octets to and from the 7588 underlying type. The actual tag and length octets are 7589 already assumed to have been read in and checked. These 7590 are needed because all other string types have virtually 7591 identical handling apart from the tag. By having versions 7592 of the ASN1 functions that just operate on content octets 7593 IMPLICIT tagging can be handled properly. It also allows 7594 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED 7595 and ASN1_INTEGER are identical apart from the tag. 7596 [Steve Henson] 7597 7598 *) Change the handling of OID objects as follows: 7599 7600 - New object identifiers are inserted in objects.txt, following 7601 the syntax given in objects.README. 7602 - objects.pl is used to process obj_mac.num and create a new 7603 obj_mac.h. 7604 - obj_dat.pl is used to create a new obj_dat.h, using the data in 7605 obj_mac.h. 7606 7607 This is currently kind of a hack, and the perl code in objects.pl 7608 isn't very elegant, but it works as I intended. The simplest way 7609 to check that it worked correctly is to look in obj_dat.h and 7610 check the array nid_objs and make sure the objects haven't moved 7611 around (this is important!). Additions are OK, as well as 7612 consistent name changes. 7613 [Richard Levitte] 7614 7615 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1'). 7616 [Bodo Moeller] 7617 7618 *) Addition of the command line parameter '-rand file' to 'openssl req'. 7619 The given file adds to whatever has already been seeded into the 7620 random pool through the RANDFILE configuration file option or 7621 environment variable, or the default random state file. 7622 [Richard Levitte] 7623 7624 *) mkstack.pl now sorts each macro group into lexical order. 7625 Previously the output order depended on the order the files 7626 appeared in the directory, resulting in needless rewriting 7627 of safestack.h . 7628 [Steve Henson] 7629 7630 *) Patches to make OpenSSL compile under Win32 again. Mostly 7631 work arounds for the VC++ problem that it treats func() as 7632 func(void). Also stripped out the parts of mkdef.pl that 7633 added extra typesafe functions: these no longer exist. 7634 [Steve Henson] 7635 7636 *) Reorganisation of the stack code. The macros are now all 7637 collected in safestack.h . Each macro is defined in terms of 7638 a "stack macro" of the form SKM_<name>(type, a, b). The 7639 DEBUG_SAFESTACK is now handled in terms of function casts, 7640 this has the advantage of retaining type safety without the 7641 use of additional functions. If DEBUG_SAFESTACK is not defined 7642 then the non typesafe macros are used instead. Also modified the 7643 mkstack.pl script to handle the new form. Needs testing to see 7644 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK 7645 the default if no major problems. Similar behaviour for ASN1_SET_OF 7646 and PKCS12_STACK_OF. 7647 [Steve Henson] 7648 7649 *) When some versions of IIS use the 'NET' form of private key the 7650 key derivation algorithm is different. Normally MD5(password) is 7651 used as a 128 bit RC4 key. In the modified case 7652 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some 7653 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same 7654 as the old Netscape_RSA functions except they have an additional 7655 'sgckey' parameter which uses the modified algorithm. Also added 7656 an -sgckey command line option to the rsa utility. Thanks to 7657 Adrian Peck <bertie (a] ncipher.com> for posting details of the modified 7658 algorithm to openssl-dev. 7659 [Steve Henson] 7660 7661 *) The evp_local.h macros were using 'c.##kname' which resulted in 7662 invalid expansion on some systems (SCO 5.0.5 for example). 7663 Corrected to 'c.kname'. 7664 [Phillip Porch <root (a] theporch.com>] 7665 7666 *) New X509_get1_email() and X509_REQ_get1_email() functions that return 7667 a STACK of email addresses from a certificate or request, these look 7668 in the subject name and the subject alternative name extensions and 7669 omit any duplicate addresses. 7670 [Steve Henson] 7671 7672 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows. 7673 This makes DSA verification about 2 % faster. 7674 [Bodo Moeller] 7675 7676 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5 7677 (meaning that now 2^5 values will be precomputed, which is only 4 KB 7678 plus overhead for 1024 bit moduli). 7679 This makes exponentiations about 0.5 % faster for 1024 bit 7680 exponents (as measured by "openssl speed rsa2048"). 7681 [Bodo Moeller] 7682 7683 *) Rename memory handling macros to avoid conflicts with other 7684 software: 7685 Malloc => OPENSSL_malloc 7686 Malloc_locked => OPENSSL_malloc_locked 7687 Realloc => OPENSSL_realloc 7688 Free => OPENSSL_free 7689 [Richard Levitte] 7690 7691 *) New function BN_mod_exp_mont_word for small bases (roughly 15% 7692 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange). 7693 [Bodo Moeller] 7694 7695 *) CygWin32 support. 7696 [John Jarvie <jjarvie (a] newsguy.com>] 7697 7698 *) The type-safe stack code has been rejigged. It is now only compiled 7699 in when OpenSSL is configured with the DEBUG_SAFESTACK option and 7700 by default all type-specific stack functions are "#define"d back to 7701 standard stack functions. This results in more streamlined output 7702 but retains the type-safety checking possibilities of the original 7703 approach. 7704 [Geoff Thorpe] 7705 7706 *) The STACK code has been cleaned up, and certain type declarations 7707 that didn't make a lot of sense have been brought in line. This has 7708 also involved a cleanup of sorts in safestack.h to more correctly 7709 map type-safe stack functions onto their plain stack counterparts. 7710 This work has also resulted in a variety of "const"ifications of 7711 lots of the code, especially "_cmp" operations which should normally 7712 be prototyped with "const" parameters anyway. 7713 [Geoff Thorpe] 7714 7715 *) When generating bytes for the first time in md_rand.c, 'stir the pool' 7716 by seeding with STATE_SIZE dummy bytes (with zero entropy count). 7717 (The PRNG state consists of two parts, the large pool 'state' and 'md', 7718 where all of 'md' is used each time the PRNG is used, but 'state' 7719 is used only indexed by a cyclic counter. As entropy may not be 7720 well distributed from the beginning, 'md' is important as a 7721 chaining variable. However, the output function chains only half 7722 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains 7723 all of 'md', and seeding with STATE_SIZE dummy bytes will result 7724 in all of 'state' being rewritten, with the new values depending 7725 on virtually all of 'md'. This overcomes the 80 bit limitation.) 7726 [Bodo Moeller] 7727 7728 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when 7729 the handshake is continued after ssl_verify_cert_chain(); 7730 otherwise, if SSL_VERIFY_NONE is set, remaining error codes 7731 can lead to 'unexplainable' connection aborts later. 7732 [Bodo Moeller; problem tracked down by Lutz Jaenicke] 7733 7734 *) Major EVP API cipher revision. 7735 Add hooks for extra EVP features. This allows various cipher 7736 parameters to be set in the EVP interface. Support added for variable 7737 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and 7738 setting of RC2 and RC5 parameters. 7739 7740 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length 7741 ciphers. 7742 7743 Remove lots of duplicated code from the EVP library. For example *every* 7744 cipher init() function handles the 'iv' in the same way according to the 7745 cipher mode. They also all do nothing if the 'key' parameter is NULL and 7746 for CFB and OFB modes they zero ctx->num. 7747 7748 New functionality allows removal of S/MIME code RC2 hack. 7749 7750 Most of the routines have the same form and so can be declared in terms 7751 of macros. 7752 7753 By shifting this to the top level EVP_CipherInit() it can be removed from 7754 all individual ciphers. If the cipher wants to handle IVs or keys 7755 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT 7756 flags. 7757 7758 Change lots of functions like EVP_EncryptUpdate() to now return a 7759 value: although software versions of the algorithms cannot fail 7760 any installed hardware versions can. 7761 [Steve Henson] 7762 7763 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if 7764 this option is set, tolerate broken clients that send the negotiated 7765 protocol version number instead of the requested protocol version 7766 number. 7767 [Bodo Moeller] 7768 7769 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag; 7770 i.e. non-zero for export ciphersuites, zero otherwise. 7771 Previous versions had this flag inverted, inconsistent with 7772 rsa_tmp_cb (..._TMP_RSA_CB). 7773 [Bodo Moeller; problem reported by Amit Chopra] 7774 7775 *) Add missing DSA library text string. Work around for some IIS 7776 key files with invalid SEQUENCE encoding. 7777 [Steve Henson] 7778 7779 *) Add a document (doc/standards.txt) that list all kinds of standards 7780 and so on that are implemented in OpenSSL. 7781 [Richard Levitte] 7782 7783 *) Enhance c_rehash script. Old version would mishandle certificates 7784 with the same subject name hash and wouldn't handle CRLs at all. 7785 Added -fingerprint option to crl utility, to support new c_rehash 7786 features. 7787 [Steve Henson] 7788 7789 *) Eliminate non-ANSI declarations in crypto.h and stack.h. 7790 [Ulf Mller] 7791 7792 *) Fix for SSL server purpose checking. Server checking was 7793 rejecting certificates which had extended key usage present 7794 but no ssl client purpose. 7795 [Steve Henson, reported by Rene Grosser <grosser (a] hisolutions.com>] 7796 7797 *) Make PKCS#12 code work with no password. The PKCS#12 spec 7798 is a little unclear about how a blank password is handled. 7799 Since the password in encoded as a BMPString with terminating 7800 double NULL a zero length password would end up as just the 7801 double NULL. However no password at all is different and is 7802 handled differently in the PKCS#12 key generation code. NS 7803 treats a blank password as zero length. MSIE treats it as no 7804 password on export: but it will try both on import. We now do 7805 the same: PKCS12_parse() tries zero length and no password if 7806 the password is set to "" or NULL (NULL is now a valid password: 7807 it wasn't before) as does the pkcs12 application. 7808 [Steve Henson] 7809 7810 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use 7811 perror when PEM_read_bio_X509_REQ fails, the error message must 7812 be obtained from the error queue. 7813 [Bodo Moeller] 7814 7815 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing 7816 it in ERR_remove_state if appropriate, and change ERR_get_state 7817 accordingly to avoid race conditions (this is necessary because 7818 thread_hash is no longer constant once set). 7819 [Bodo Moeller] 7820 7821 *) Bugfix for linux-elf makefile.one. 7822 [Ulf Mller] 7823 7824 *) RSA_get_default_method() will now cause a default 7825 RSA_METHOD to be chosen if one doesn't exist already. 7826 Previously this was only set during a call to RSA_new() 7827 or RSA_new_method(NULL) meaning it was possible for 7828 RSA_get_default_method() to return NULL. 7829 [Geoff Thorpe] 7830 7831 *) Added native name translation to the existing DSO code 7832 that will convert (if the flag to do so is set) filenames 7833 that are sufficiently small and have no path information 7834 into a canonical native form. Eg. "blah" converted to 7835 "libblah.so" or "blah.dll" etc. 7836 [Geoff Thorpe] 7837 7838 *) New function ERR_error_string_n(e, buf, len) which is like 7839 ERR_error_string(e, buf), but writes at most 'len' bytes 7840 including the 0 terminator. For ERR_error_string_n, 'buf' 7841 may not be NULL. 7842 [Damien Miller <djm (a] mindrot.org>, Bodo Moeller] 7843 7844 *) CONF library reworked to become more general. A new CONF 7845 configuration file reader "class" is implemented as well as a 7846 new functions (NCONF_*, for "New CONF") to handle it. The now 7847 old CONF_* functions are still there, but are reimplemented to 7848 work in terms of the new functions. Also, a set of functions 7849 to handle the internal storage of the configuration data is 7850 provided to make it easier to write new configuration file 7851 reader "classes" (I can definitely see something reading a 7852 configuration file in XML format, for example), called _CONF_*, 7853 or "the configuration storage API"... 7854 7855 The new configuration file reading functions are: 7856 7857 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio, 7858 NCONF_get_section, NCONF_get_string, NCONF_get_numbre 7859 7860 NCONF_default, NCONF_WIN32 7861 7862 NCONF_dump_fp, NCONF_dump_bio 7863 7864 NCONF_default and NCONF_WIN32 are method (or "class") choosers, 7865 NCONF_new creates a new CONF object. This works in the same way 7866 as other interfaces in OpenSSL, like the BIO interface. 7867 NCONF_dump_* dump the internal storage of the configuration file, 7868 which is useful for debugging. All other functions take the same 7869 arguments as the old CONF_* functions wth the exception of the 7870 first that must be a `CONF *' instead of a `LHASH *'. 7871 7872 To make it easer to use the new classes with the old CONF_* functions, 7873 the function CONF_set_default_method is provided. 7874 [Richard Levitte] 7875 7876 *) Add '-tls1' option to 'openssl ciphers', which was already 7877 mentioned in the documentation but had not been implemented. 7878 (This option is not yet really useful because even the additional 7879 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.) 7880 [Bodo Moeller] 7881 7882 *) Initial DSO code added into libcrypto for letting OpenSSL (and 7883 OpenSSL-based applications) load shared libraries and bind to 7884 them in a portable way. 7885 [Geoff Thorpe, with contributions from Richard Levitte] 7886 7887 Changes between 0.9.5 and 0.9.5a [1 Apr 2000] 7888 7889 *) Make sure _lrotl and _lrotr are only used with MSVC. 7890 7891 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status 7892 (the default implementation of RAND_status). 7893 7894 *) Rename openssl x509 option '-crlext', which was added in 0.9.5, 7895 to '-clrext' (= clear extensions), as intended and documented. 7896 [Bodo Moeller; inconsistency pointed out by Michael Attili 7897 <attili (a] amaxo.com>] 7898 7899 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length 7900 was larger than the MD block size. 7901 [Steve Henson, pointed out by Yost William <YostW (a] tce.com>] 7902 7903 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument 7904 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set() 7905 using the passed key: if the passed key was a private key the result 7906 of X509_print(), for example, would be to print out all the private key 7907 components. 7908 [Steve Henson] 7909 7910 *) des_quad_cksum() byte order bug fix. 7911 [Ulf Mller, using the problem description in krb4-0.9.7, where 7912 the solution is attributed to Derrick J Brashear <shadow (a] DEMENTIA.ORG>] 7913 7914 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly 7915 discouraged. 7916 [Steve Henson, pointed out by Brian Korver <briank (a] cs.stanford.edu>] 7917 7918 *) For easily testing in shell scripts whether some command 7919 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX' 7920 returns with exit code 0 iff no command of the given name is available. 7921 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases, 7922 the output goes to stdout and nothing is printed to stderr. 7923 Additional arguments are always ignored. 7924 7925 Since for each cipher there is a command of the same name, 7926 the 'no-cipher' compilation switches can be tested this way. 7927 7928 ('openssl no-XXX' is not able to detect pseudo-commands such 7929 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.) 7930 [Bodo Moeller] 7931 7932 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration. 7933 [Bodo Moeller] 7934 7935 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE 7936 is set; it will be thrown away anyway because each handshake creates 7937 its own key. 7938 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition 7939 to parameters -- in previous versions (since OpenSSL 0.9.3) the 7940 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining 7941 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro. 7942 [Bodo Moeller] 7943 7944 *) New s_client option -ign_eof: EOF at stdin is ignored, and 7945 'Q' and 'R' lose their special meanings (quit/renegotiate). 7946 This is part of what -quiet does; unlike -quiet, -ign_eof 7947 does not suppress any output. 7948 [Richard Levitte] 7949 7950 *) Add compatibility options to the purpose and trust code. The 7951 purpose X509_PURPOSE_ANY is "any purpose" which automatically 7952 accepts a certificate or CA, this was the previous behaviour, 7953 with all the associated security issues. 7954 7955 X509_TRUST_COMPAT is the old trust behaviour: only and 7956 automatically trust self signed roots in certificate store. A 7957 new trust setting X509_TRUST_DEFAULT is used to specify that 7958 a purpose has no associated trust setting and it should instead 7959 use the value in the default purpose. 7960 [Steve Henson] 7961 7962 *) Fix the PKCS#8 DSA private key code so it decodes keys again 7963 and fix a memory leak. 7964 [Steve Henson] 7965 7966 *) In util/mkerr.pl (which implements 'make errors'), preserve 7967 reason strings from the previous version of the .c file, as 7968 the default to have only downcase letters (and digits) in 7969 automatically generated reasons codes is not always appropriate. 7970 [Bodo Moeller] 7971 7972 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table 7973 using strerror. Previously, ERR_reason_error_string() returned 7974 library names as reason strings for SYSerr; but SYSerr is a special 7975 case where small numbers are errno values, not library numbers. 7976 [Bodo Moeller] 7977 7978 *) Add '-dsaparam' option to 'openssl dhparam' application. This 7979 converts DSA parameters into DH parameters. (When creating parameters, 7980 DSA_generate_parameters is used.) 7981 [Bodo Moeller] 7982 7983 *) Include 'length' (recommended exponent length) in C code generated 7984 by 'openssl dhparam -C'. 7985 [Bodo Moeller] 7986 7987 *) The second argument to set_label in perlasm was already being used 7988 so couldn't be used as a "file scope" flag. Moved to third argument 7989 which was free. 7990 [Steve Henson] 7991 7992 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes 7993 instead of RAND_bytes for encryption IVs and salts. 7994 [Bodo Moeller] 7995 7996 *) Include RAND_status() into RAND_METHOD instead of implementing 7997 it only for md_rand.c Otherwise replacing the PRNG by calling 7998 RAND_set_rand_method would be impossible. 7999 [Bodo Moeller] 8000 8001 *) Don't let DSA_generate_key() enter an infinite loop if the random 8002 number generation fails. 8003 [Bodo Moeller] 8004 8005 *) New 'rand' application for creating pseudo-random output. 8006 [Bodo Moeller] 8007 8008 *) Added configuration support for Linux/IA64 8009 [Rolf Haberrecker <rolf (a] suse.de>] 8010 8011 *) Assembler module support for Mingw32. 8012 [Ulf Mller] 8013 8014 *) Shared library support for HPUX (in shlib/). 8015 [Lutz Jaenicke <Lutz.Jaenicke (a] aet.TU-Cottbus.DE> and Anonymous] 8016 8017 *) Shared library support for Solaris gcc. 8018 [Lutz Behnke <behnke (a] trustcenter.de>] 8019 8020 Changes between 0.9.4 and 0.9.5 [28 Feb 2000] 8021 8022 *) PKCS7_encrypt() was adding text MIME headers twice because they 8023 were added manually and by SMIME_crlf_copy(). 8024 [Steve Henson] 8025 8026 *) In bntest.c don't call BN_rand with zero bits argument. 8027 [Steve Henson, pointed out by Andrew W. Gray <agray (a] iconsinc.com>] 8028 8029 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n] 8030 case was implemented. This caused BN_div_recp() to fail occasionally. 8031 [Ulf Mller] 8032 8033 *) Add an optional second argument to the set_label() in the perl 8034 assembly language builder. If this argument exists and is set 8035 to 1 it signals that the assembler should use a symbol whose 8036 scope is the entire file, not just the current function. This 8037 is needed with MASM which uses the format label:: for this scope. 8038 [Steve Henson, pointed out by Peter Runestig <peter (a] runestig.com>] 8039 8040 *) Change the ASN1 types so they are typedefs by default. Before 8041 almost all types were #define'd to ASN1_STRING which was causing 8042 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING) 8043 for example. 8044 [Steve Henson] 8045 8046 *) Change names of new functions to the new get1/get0 naming 8047 convention: After 'get1', the caller owns a reference count 8048 and has to call ..._free; 'get0' returns a pointer to some 8049 data structure without incrementing reference counters. 8050 (Some of the existing 'get' functions increment a reference 8051 counter, some don't.) 8052 Similarly, 'set1' and 'add1' functions increase reference 8053 counters or duplicate objects. 8054 [Steve Henson] 8055 8056 *) Allow for the possibility of temp RSA key generation failure: 8057 the code used to assume it always worked and crashed on failure. 8058 [Steve Henson] 8059 8060 *) Fix potential buffer overrun problem in BIO_printf(). 8061 [Ulf Mller, using public domain code by Patrick Powell; problem 8062 pointed out by David Sacerdote <das33 (a] cornell.edu>] 8063 8064 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions 8065 RAND_egd() and RAND_status(). In the command line application, 8066 the EGD socket can be specified like a seed file using RANDFILE 8067 or -rand. 8068 [Ulf Mller] 8069 8070 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures. 8071 Some CAs (e.g. Verisign) distribute certificates in this form. 8072 [Steve Henson] 8073 8074 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher 8075 list to exclude them. This means that no special compilation option 8076 is needed to use anonymous DH: it just needs to be included in the 8077 cipher list. 8078 [Steve Henson] 8079 8080 *) Change the EVP_MD_CTX_type macro so its meaning consistent with 8081 EVP_MD_type. The old functionality is available in a new macro called 8082 EVP_MD_md(). Change code that uses it and update docs. 8083 [Steve Henson] 8084 8085 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions 8086 where the 'void *' argument is replaced by a function pointer argument. 8087 Previously 'void *' was abused to point to functions, which works on 8088 many platforms, but is not correct. As these functions are usually 8089 called by macros defined in OpenSSL header files, most source code 8090 should work without changes. 8091 [Richard Levitte] 8092 8093 *) <openssl/opensslconf.h> (which is created by Configure) now contains 8094 sections with information on -D... compiler switches used for 8095 compiling the library so that applications can see them. To enable 8096 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES 8097 must be defined. E.g., 8098 #define OPENSSL_ALGORITHM_DEFINES 8099 #include <openssl/opensslconf.h> 8100 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc. 8101 [Richard Levitte, Ulf and Bodo Mller] 8102 8103 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS 8104 record layer. 8105 [Bodo Moeller] 8106 8107 *) Change the 'other' type in certificate aux info to a STACK_OF 8108 X509_ALGOR. Although not an AlgorithmIdentifier as such it has 8109 the required ASN1 format: arbitrary types determined by an OID. 8110 [Steve Henson] 8111 8112 *) Add some PEM_write_X509_REQ_NEW() functions and a command line 8113 argument to 'req'. This is not because the function is newer or 8114 better than others it just uses the work 'NEW' in the certificate 8115 request header lines. Some software needs this. 8116 [Steve Henson] 8117 8118 *) Reorganise password command line arguments: now passwords can be 8119 obtained from various sources. Delete the PEM_cb function and make 8120 it the default behaviour: i.e. if the callback is NULL and the 8121 usrdata argument is not NULL interpret it as a null terminated pass 8122 phrase. If usrdata and the callback are NULL then the pass phrase 8123 is prompted for as usual. 8124 [Steve Henson] 8125 8126 *) Add support for the Compaq Atalla crypto accelerator. If it is installed, 8127 the support is automatically enabled. The resulting binaries will 8128 autodetect the card and use it if present. 8129 [Ben Laurie and Compaq Inc.] 8130 8131 *) Work around for Netscape hang bug. This sends certificate request 8132 and server done in one record. Since this is perfectly legal in the 8133 SSL/TLS protocol it isn't a "bug" option and is on by default. See 8134 the bugs/SSLv3 entry for more info. 8135 [Steve Henson] 8136 8137 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround. 8138 [Andy Polyakov] 8139 8140 *) Add -rand argument to smime and pkcs12 applications and read/write 8141 of seed file. 8142 [Steve Henson] 8143 8144 *) New 'passwd' tool for crypt(3) and apr1 password hashes. 8145 [Bodo Moeller] 8146 8147 *) Add command line password options to the remaining applications. 8148 [Steve Henson] 8149 8150 *) Bug fix for BN_div_recp() for numerators with an even number of 8151 bits. 8152 [Ulf Mller] 8153 8154 *) More tests in bntest.c, and changed test_bn output. 8155 [Ulf Mller] 8156 8157 *) ./config recognizes MacOS X now. 8158 [Andy Polyakov] 8159 8160 *) Bug fix for BN_div() when the first words of num and divsor are 8161 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0). 8162 [Ulf Mller] 8163 8164 *) Add support for various broken PKCS#8 formats, and command line 8165 options to produce them. 8166 [Steve Henson] 8167 8168 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to 8169 get temporary BIGNUMs from a BN_CTX. 8170 [Ulf Mller] 8171 8172 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont() 8173 for p == 0. 8174 [Ulf Mller] 8175 8176 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and 8177 include a #define from the old name to the new. The original intent 8178 was that statically linked binaries could for example just call 8179 SSLeay_add_all_ciphers() to just add ciphers to the table and not 8180 link with digests. This never worked becayse SSLeay_add_all_digests() 8181 and SSLeay_add_all_ciphers() were in the same source file so calling 8182 one would link with the other. They are now in separate source files. 8183 [Steve Henson] 8184 8185 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'. 8186 [Steve Henson] 8187 8188 *) Use a less unusual form of the Miller-Rabin primality test (it used 8189 a binary algorithm for exponentiation integrated into the Miller-Rabin 8190 loop, our standard modexp algorithms are faster). 8191 [Bodo Moeller] 8192 8193 *) Support for the EBCDIC character set completed. 8194 [Martin Kraemer <Martin.Kraemer (a] Mch.SNI.De>] 8195 8196 *) Source code cleanups: use const where appropriate, eliminate casts, 8197 use void * instead of char * in lhash. 8198 [Ulf Mller] 8199 8200 *) Bugfix: ssl3_send_server_key_exchange was not restartable 8201 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of 8202 this the server could overwrite ephemeral keys that the client 8203 has already seen). 8204 [Bodo Moeller] 8205 8206 *) Turn DSA_is_prime into a macro that calls BN_is_prime, 8207 using 50 iterations of the Rabin-Miller test. 8208 8209 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50 8210 iterations of the Rabin-Miller test as required by the appendix 8211 to FIPS PUB 186[-1]) instead of DSA_is_prime. 8212 As BN_is_prime_fasttest includes trial division, DSA parameter 8213 generation becomes much faster. 8214 8215 This implies a change for the callback functions in DSA_is_prime 8216 and DSA_generate_parameters: The callback function is called once 8217 for each positive witness in the Rabin-Miller test, not just 8218 occasionally in the inner loop; and the parameters to the 8219 callback function now provide an iteration count for the outer 8220 loop rather than for the current invocation of the inner loop. 8221 DSA_generate_parameters additionally can call the callback 8222 function with an 'iteration count' of -1, meaning that a 8223 candidate has passed the trial division test (when q is generated 8224 from an application-provided seed, trial division is skipped). 8225 [Bodo Moeller] 8226 8227 *) New function BN_is_prime_fasttest that optionally does trial 8228 division before starting the Rabin-Miller test and has 8229 an additional BN_CTX * argument (whereas BN_is_prime always 8230 has to allocate at least one BN_CTX). 8231 'callback(1, -1, cb_arg)' is called when a number has passed the 8232 trial division stage. 8233 [Bodo Moeller] 8234 8235 *) Fix for bug in CRL encoding. The validity dates weren't being handled 8236 as ASN1_TIME. 8237 [Steve Henson] 8238 8239 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file. 8240 [Steve Henson] 8241 8242 *) New function BN_pseudo_rand(). 8243 [Ulf Mller] 8244 8245 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable) 8246 bignum version of BN_from_montgomery() with the working code from 8247 SSLeay 0.9.0 (the word based version is faster anyway), and clean up 8248 the comments. 8249 [Ulf Mller] 8250 8251 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that 8252 made it impossible to use the same SSL_SESSION data structure in 8253 SSL2 clients in multiple threads. 8254 [Bodo Moeller] 8255 8256 *) The return value of RAND_load_file() no longer counts bytes obtained 8257 by stat(). RAND_load_file(..., -1) is new and uses the complete file 8258 to seed the PRNG (previously an explicit byte count was required). 8259 [Ulf Mller, Bodo Mller] 8260 8261 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes 8262 used (char *) instead of (void *) and had casts all over the place. 8263 [Steve Henson] 8264 8265 *) Make BN_generate_prime() return NULL on error if ret!=NULL. 8266 [Ulf Mller] 8267 8268 *) Retain source code compatibility for BN_prime_checks macro: 8269 BN_is_prime(..., BN_prime_checks, ...) now uses 8270 BN_prime_checks_for_size to determine the appropriate number of 8271 Rabin-Miller iterations. 8272 [Ulf Mller] 8273 8274 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to 8275 DH_CHECK_P_NOT_SAFE_PRIME. 8276 (Check if this is true? OpenPGP calls them "strong".) 8277 [Ulf Mller] 8278 8279 *) Merge the functionality of "dh" and "gendh" programs into a new program 8280 "dhparam". The old programs are retained for now but will handle DH keys 8281 (instead of parameters) in future. 8282 [Steve Henson] 8283 8284 *) Make the ciphers, s_server and s_client programs check the return values 8285 when a new cipher list is set. 8286 [Steve Henson] 8287 8288 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit 8289 ciphers. Before when the 56bit ciphers were enabled the sorting was 8290 wrong. 8291 8292 The syntax for the cipher sorting has been extended to support sorting by 8293 cipher-strength (using the strength_bits hard coded in the tables). 8294 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod). 8295 8296 Fix a bug in the cipher-command parser: when supplying a cipher command 8297 string with an "undefined" symbol (neither command nor alphanumeric 8298 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now 8299 an error is flagged. 8300 8301 Due to the strength-sorting extension, the code of the 8302 ssl_create_cipher_list() function was completely rearranged. I hope that 8303 the readability was also increased :-) 8304 [Lutz Jaenicke <Lutz.Jaenicke (a] aet.TU-Cottbus.DE>] 8305 8306 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1 8307 for the first serial number and places 2 in the serial number file. This 8308 avoids problems when the root CA is created with serial number zero and 8309 the first user certificate has the same issuer name and serial number 8310 as the root CA. 8311 [Steve Henson] 8312 8313 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses 8314 the new code. Add documentation for this stuff. 8315 [Steve Henson] 8316 8317 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from 8318 X509_*() to X509at_*() on the grounds that they don't handle X509 8319 structures and behave in an analagous way to the X509v3 functions: 8320 they shouldn't be called directly but wrapper functions should be used 8321 instead. 8322 8323 So we also now have some wrapper functions that call the X509at functions 8324 when passed certificate requests. (TO DO: similar things can be done with 8325 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other 8326 things. Some of these need some d2i or i2d and print functionality 8327 because they handle more complex structures.) 8328 [Steve Henson] 8329 8330 *) Add missing #ifndefs that caused missing symbols when building libssl 8331 as a shared library without RSA. Use #ifndef NO_SSL2 instead of 8332 NO_RSA in ssl/s2*.c. 8333 [Kris Kennaway <kris (a] hub.freebsd.org>, modified by Ulf Mller] 8334 8335 *) Precautions against using the PRNG uninitialized: RAND_bytes() now 8336 has a return value which indicates the quality of the random data 8337 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's 8338 error queue. New function RAND_pseudo_bytes() generates output that is 8339 guaranteed to be unique but not unpredictable. RAND_add is like 8340 RAND_seed, but takes an extra argument for an entropy estimate 8341 (RAND_seed always assumes full entropy). 8342 [Ulf Mller] 8343 8344 *) Do more iterations of Rabin-Miller probable prime test (specifically, 8345 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes 8346 instead of only 2 for all lengths; see BN_prime_checks_for_size definition 8347 in crypto/bn/bn_prime.c for the complete table). This guarantees a 8348 false-positive rate of at most 2^-80 for random input. 8349 [Bodo Moeller] 8350 8351 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs. 8352 [Bodo Moeller] 8353 8354 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain 8355 in the 0.9.5 release), this returns the chain 8356 from an X509_CTX structure with a dup of the stack and all 8357 the X509 reference counts upped: so the stack will exist 8358 after X509_CTX_cleanup() has been called. Modify pkcs12.c 8359 to use this. 8360 8361 Also make SSL_SESSION_print() print out the verify return 8362 code. 8363 [Steve Henson] 8364 8365 *) Add manpage for the pkcs12 command. Also change the default 8366 behaviour so MAC iteration counts are used unless the new 8367 -nomaciter option is used. This improves file security and 8368 only older versions of MSIE (4.0 for example) need it. 8369 [Steve Henson] 8370 8371 *) Honor the no-xxx Configure options when creating .DEF files. 8372 [Ulf Mller] 8373 8374 *) Add PKCS#10 attributes to field table: challengePassword, 8375 unstructuredName and unstructuredAddress. These are taken from 8376 draft PKCS#9 v2.0 but are compatible with v1.2 provided no 8377 international characters are used. 8378 8379 More changes to X509_ATTRIBUTE code: allow the setting of types 8380 based on strings. Remove the 'loc' parameter when adding 8381 attributes because these will be a SET OF encoding which is sorted 8382 in ASN1 order. 8383 [Steve Henson] 8384 8385 *) Initial changes to the 'req' utility to allow request generation 8386 automation. This will allow an application to just generate a template 8387 file containing all the field values and have req construct the 8388 request. 8389 8390 Initial support for X509_ATTRIBUTE handling. Stacks of these are 8391 used all over the place including certificate requests and PKCS#7 8392 structures. They are currently handled manually where necessary with 8393 some primitive wrappers for PKCS#7. The new functions behave in a 8394 manner analogous to the X509 extension functions: they allow 8395 attributes to be looked up by NID and added. 8396 8397 Later something similar to the X509V3 code would be desirable to 8398 automatically handle the encoding, decoding and printing of the 8399 more complex types. The string types like challengePassword can 8400 be handled by the string table functions. 8401 8402 Also modified the multi byte string table handling. Now there is 8403 a 'global mask' which masks out certain types. The table itself 8404 can use the flag STABLE_NO_MASK to ignore the mask setting: this 8405 is useful when for example there is only one permissible type 8406 (as in countryName) and using the mask might result in no valid 8407 types at all. 8408 [Steve Henson] 8409 8410 *) Clean up 'Finished' handling, and add functions SSL_get_finished and 8411 SSL_get_peer_finished to allow applications to obtain the latest 8412 Finished messages sent to the peer or expected from the peer, 8413 respectively. (SSL_get_peer_finished is usually the Finished message 8414 actually received from the peer, otherwise the protocol will be aborted.) 8415 8416 As the Finished message are message digests of the complete handshake 8417 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can 8418 be used for external authentication procedures when the authentication 8419 provided by SSL/TLS is not desired or is not enough. 8420 [Bodo Moeller] 8421 8422 *) Enhanced support for Alpha Linux is added. Now ./config checks if 8423 the host supports BWX extension and if Compaq C is present on the 8424 $PATH. Just exploiting of the BWX extension results in 20-30% 8425 performance kick for some algorithms, e.g. DES and RC4 to mention 8426 a couple. Compaq C in turn generates ~20% faster code for MD5 and 8427 SHA1. 8428 [Andy Polyakov] 8429 8430 *) Add support for MS "fast SGC". This is arguably a violation of the 8431 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with 8432 weak crypto and after checking the certificate is SGC a second one 8433 with strong crypto. MS SGC stops the first handshake after receiving 8434 the server certificate message and sends a second client hello. Since 8435 a server will typically do all the time consuming operations before 8436 expecting any further messages from the client (server key exchange 8437 is the most expensive) there is little difference between the two. 8438 8439 To get OpenSSL to support MS SGC we have to permit a second client 8440 hello message after we have sent server done. In addition we have to 8441 reset the MAC if we do get this second client hello. 8442 [Steve Henson] 8443 8444 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide 8445 if a DER encoded private key is RSA or DSA traditional format. Changed 8446 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional" 8447 format DER encoded private key. Newer code should use PKCS#8 format which 8448 has the key type encoded in the ASN1 structure. Added DER private key 8449 support to pkcs8 application. 8450 [Steve Henson] 8451 8452 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous 8453 ciphersuites has been selected (as required by the SSL 3/TLS 1 8454 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT 8455 is set, we interpret this as a request to violate the specification 8456 (the worst that can happen is a handshake failure, and 'correct' 8457 behaviour would result in a handshake failure anyway). 8458 [Bodo Moeller] 8459 8460 *) In SSL_CTX_add_session, take into account that there might be multiple 8461 SSL_SESSION structures with the same session ID (e.g. when two threads 8462 concurrently obtain them from an external cache). 8463 The internal cache can handle only one SSL_SESSION with a given ID, 8464 so if there's a conflict, we now throw out the old one to achieve 8465 consistency. 8466 [Bodo Moeller] 8467 8468 *) Add OIDs for idea and blowfish in CBC mode. This will allow both 8469 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to 8470 some routines that use cipher OIDs: some ciphers do not have OIDs 8471 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for 8472 example. 8473 [Steve Henson] 8474 8475 *) Simplify the trust setting structure and code. Now we just have 8476 two sequences of OIDs for trusted and rejected settings. These will 8477 typically have values the same as the extended key usage extension 8478 and any application specific purposes. 8479 8480 The trust checking code now has a default behaviour: it will just 8481 check for an object with the same NID as the passed id. Functions can 8482 be provided to override either the default behaviour or the behaviour 8483 for a given id. SSL client, server and email already have functions 8484 in place for compatibility: they check the NID and also return "trusted" 8485 if the certificate is self signed. 8486 [Steve Henson] 8487 8488 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the 8489 traditional format into an EVP_PKEY structure. 8490 [Steve Henson] 8491 8492 *) Add a password callback function PEM_cb() which either prompts for 8493 a password if usr_data is NULL or otherwise assumes it is a null 8494 terminated password. Allow passwords to be passed on command line 8495 environment or config files in a few more utilities. 8496 [Steve Henson] 8497 8498 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private 8499 keys. Add some short names for PKCS#8 PBE algorithms and allow them 8500 to be specified on the command line for the pkcs8 and pkcs12 utilities. 8501 Update documentation. 8502 [Steve Henson] 8503 8504 *) Support for ASN1 "NULL" type. This could be handled before by using 8505 ASN1_TYPE but there wasn't any function that would try to read a NULL 8506 and produce an error if it couldn't. For compatibility we also have 8507 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and 8508 don't allocate anything because they don't need to. 8509 [Steve Henson] 8510 8511 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS 8512 for details. 8513 [Andy Polyakov, Roy Woods <roy (a] centicsystems.ca>] 8514 8515 *) Rebuild of the memory allocation routines used by OpenSSL code and 8516 possibly others as well. The purpose is to make an interface that 8517 provide hooks so anyone can build a separate set of allocation and 8518 deallocation routines to be used by OpenSSL, for example memory 8519 pool implementations, or something else, which was previously hard 8520 since Malloc(), Realloc() and Free() were defined as macros having 8521 the values malloc, realloc and free, respectively (except for Win32 8522 compilations). The same is provided for memory debugging code. 8523 OpenSSL already comes with functionality to find memory leaks, but 8524 this gives people a chance to debug other memory problems. 8525 8526 With these changes, a new set of functions and macros have appeared: 8527 8528 CRYPTO_set_mem_debug_functions() [F] 8529 CRYPTO_get_mem_debug_functions() [F] 8530 CRYPTO_dbg_set_options() [F] 8531 CRYPTO_dbg_get_options() [F] 8532 CRYPTO_malloc_debug_init() [M] 8533 8534 The memory debug functions are NULL by default, unless the library 8535 is compiled with CRYPTO_MDEBUG or friends is defined. If someone 8536 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which 8537 gives the standard debugging functions that come with OpenSSL) or 8538 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions 8539 provided by the library user) must be used. When the standard 8540 debugging functions are used, CRYPTO_dbg_set_options can be used to 8541 request additional information: 8542 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting 8543 the CRYPTO_MDEBUG_xxx macro when compiling the library. 8544 8545 Also, things like CRYPTO_set_mem_functions will always give the 8546 expected result (the new set of functions is used for allocation 8547 and deallocation) at all times, regardless of platform and compiler 8548 options. 8549 8550 To finish it up, some functions that were never use in any other 8551 way than through macros have a new API and new semantic: 8552 8553 CRYPTO_dbg_malloc() 8554 CRYPTO_dbg_realloc() 8555 CRYPTO_dbg_free() 8556 8557 All macros of value have retained their old syntax. 8558 [Richard Levitte and Bodo Moeller] 8559 8560 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the 8561 ordering of SMIMECapabilities wasn't in "strength order" and there 8562 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature 8563 algorithm. 8564 [Steve Henson] 8565 8566 *) Some ASN1 types with illegal zero length encoding (INTEGER, 8567 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines. 8568 [Frans Heymans <fheymans (a] isaserver.be>, modified by Steve Henson] 8569 8570 *) Merge in my S/MIME library for OpenSSL. This provides a simple 8571 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough 8572 functionality to handle multipart/signed properly) and a utility 8573 called 'smime' to call all this stuff. This is based on code I 8574 originally wrote for Celo who have kindly allowed it to be 8575 included in OpenSSL. 8576 [Steve Henson] 8577 8578 *) Add variants des_set_key_checked and des_set_key_unchecked of 8579 des_set_key (aka des_key_sched). Global variable des_check_key 8580 decides which of these is called by des_set_key; this way 8581 des_check_key behaves as it always did, but applications and 8582 the library itself, which was buggy for des_check_key == 1, 8583 have a cleaner way to pick the version they need. 8584 [Bodo Moeller] 8585 8586 *) New function PKCS12_newpass() which changes the password of a 8587 PKCS12 structure. 8588 [Steve Henson] 8589 8590 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and 8591 dynamic mix. In both cases the ids can be used as an index into the 8592 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add() 8593 functions so they accept a list of the field values and the 8594 application doesn't need to directly manipulate the X509_TRUST 8595 structure. 8596 [Steve Henson] 8597 8598 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't 8599 need initialising. 8600 [Steve Henson] 8601 8602 *) Modify the way the V3 extension code looks up extensions. This now 8603 works in a similar way to the object code: we have some "standard" 8604 extensions in a static table which is searched with OBJ_bsearch() 8605 and the application can add dynamic ones if needed. The file 8606 crypto/x509v3/ext_dat.h now has the info: this file needs to be 8607 updated whenever a new extension is added to the core code and kept 8608 in ext_nid order. There is a simple program 'tabtest.c' which checks 8609 this. New extensions are not added too often so this file can readily 8610 be maintained manually. 8611 8612 There are two big advantages in doing things this way. The extensions 8613 can be looked up immediately and no longer need to be "added" using 8614 X509V3_add_standard_extensions(): this function now does nothing. 8615 [Side note: I get *lots* of email saying the extension code doesn't 8616 work because people forget to call this function] 8617 Also no dynamic allocation is done unless new extensions are added: 8618 so if we don't add custom extensions there is no need to call 8619 X509V3_EXT_cleanup(). 8620 [Steve Henson] 8621 8622 *) Modify enc utility's salting as follows: make salting the default. Add a 8623 magic header, so unsalted files fail gracefully instead of just decrypting 8624 to garbage. This is because not salting is a big security hole, so people 8625 should be discouraged from doing it. 8626 [Ben Laurie] 8627 8628 *) Fixes and enhancements to the 'x509' utility. It allowed a message 8629 digest to be passed on the command line but it only used this 8630 parameter when signing a certificate. Modified so all relevant 8631 operations are affected by the digest parameter including the 8632 -fingerprint and -x509toreq options. Also -x509toreq choked if a 8633 DSA key was used because it didn't fix the digest. 8634 [Steve Henson] 8635 8636 *) Initial certificate chain verify code. Currently tests the untrusted 8637 certificates for consistency with the verify purpose (which is set 8638 when the X509_STORE_CTX structure is set up) and checks the pathlength. 8639 8640 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour: 8641 this is because it will reject chains with invalid extensions whereas 8642 every previous version of OpenSSL and SSLeay made no checks at all. 8643 8644 Trust code: checks the root CA for the relevant trust settings. Trust 8645 settings have an initial value consistent with the verify purpose: e.g. 8646 if the verify purpose is for SSL client use it expects the CA to be 8647 trusted for SSL client use. However the default value can be changed to 8648 permit custom trust settings: one example of this would be to only trust 8649 certificates from a specific "secure" set of CAs. 8650 8651 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions 8652 which should be used for version portability: especially since the 8653 verify structure is likely to change more often now. 8654 8655 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions 8656 to set them. If not set then assume SSL clients will verify SSL servers 8657 and vice versa. 8658 8659 Two new options to the verify program: -untrusted allows a set of 8660 untrusted certificates to be passed in and -purpose which sets the 8661 intended purpose of the certificate. If a purpose is set then the 8662 new chain verify code is used to check extension consistency. 8663 [Steve Henson] 8664 8665 *) Support for the authority information access extension. 8666 [Steve Henson] 8667 8668 *) Modify RSA and DSA PEM read routines to transparently handle 8669 PKCS#8 format private keys. New *_PUBKEY_* functions that handle 8670 public keys in a format compatible with certificate 8671 SubjectPublicKeyInfo structures. Unfortunately there were already 8672 functions called *_PublicKey_* which used various odd formats so 8673 these are retained for compatibility: however the DSA variants were 8674 never in a public release so they have been deleted. Changed dsa/rsa 8675 utilities to handle the new format: note no releases ever handled public 8676 keys so we should be OK. 8677 8678 The primary motivation for this change is to avoid the same fiasco 8679 that dogs private keys: there are several incompatible private key 8680 formats some of which are standard and some OpenSSL specific and 8681 require various evil hacks to allow partial transparent handling and 8682 even then it doesn't work with DER formats. Given the option anything 8683 other than PKCS#8 should be dumped: but the other formats have to 8684 stay in the name of compatibility. 8685 8686 With public keys and the benefit of hindsight one standard format 8687 is used which works with EVP_PKEY, RSA or DSA structures: though 8688 it clearly returns an error if you try to read the wrong kind of key. 8689 8690 Added a -pubkey option to the 'x509' utility to output the public key. 8691 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*() 8692 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add 8693 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*()) 8694 that do the same as the EVP_PKEY_assign_*() except they up the 8695 reference count of the added key (they don't "swallow" the 8696 supplied key). 8697 [Steve Henson] 8698 8699 *) Fixes to crypto/x509/by_file.c the code to read in certificates and 8700 CRLs would fail if the file contained no certificates or no CRLs: 8701 added a new function to read in both types and return the number 8702 read: this means that if none are read it will be an error. The 8703 DER versions of the certificate and CRL reader would always fail 8704 because it isn't possible to mix certificates and CRLs in DER format 8705 without choking one or the other routine. Changed this to just read 8706 a certificate: this is the best we can do. Also modified the code 8707 in apps/verify.c to take notice of return codes: it was previously 8708 attempting to read in certificates from NULL pointers and ignoring 8709 any errors: this is one reason why the cert and CRL reader seemed 8710 to work. It doesn't check return codes from the default certificate 8711 routines: these may well fail if the certificates aren't installed. 8712 [Steve Henson] 8713 8714 *) Code to support otherName option in GeneralName. 8715 [Steve Henson] 8716 8717 *) First update to verify code. Change the verify utility 8718 so it warns if it is passed a self signed certificate: 8719 for consistency with the normal behaviour. X509_verify 8720 has been modified to it will now verify a self signed 8721 certificate if *exactly* the same certificate appears 8722 in the store: it was previously impossible to trust a 8723 single self signed certificate. This means that: 8724 openssl verify ss.pem 8725 now gives a warning about a self signed certificate but 8726 openssl verify -CAfile ss.pem ss.pem 8727 is OK. 8728 [Steve Henson] 8729 8730 *) For servers, store verify_result in SSL_SESSION data structure 8731 (and add it to external session representation). 8732 This is needed when client certificate verifications fails, 8733 but an application-provided verification callback (set by 8734 SSL_CTX_set_cert_verify_callback) allows accepting the session 8735 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK 8736 but returns 1): When the session is reused, we have to set 8737 ssl->verify_result to the appropriate error code to avoid 8738 security holes. 8739 [Bodo Moeller, problem pointed out by Lutz Jaenicke] 8740 8741 *) Fix a bug in the new PKCS#7 code: it didn't consider the 8742 case in PKCS7_dataInit() where the signed PKCS7 structure 8743 didn't contain any existing data because it was being created. 8744 [Po-Cheng Chen <pocheng (a] nst.com.tw>, slightly modified by Steve Henson] 8745 8746 *) Add a salt to the key derivation routines in enc.c. This 8747 forms the first 8 bytes of the encrypted file. Also add a 8748 -S option to allow a salt to be input on the command line. 8749 [Steve Henson] 8750 8751 *) New function X509_cmp(). Oddly enough there wasn't a function 8752 to compare two certificates. We do this by working out the SHA1 8753 hash and comparing that. X509_cmp() will be needed by the trust 8754 code. 8755 [Steve Henson] 8756 8757 *) SSL_get1_session() is like SSL_get_session(), but increments 8758 the reference count in the SSL_SESSION returned. 8759 [Geoff Thorpe <geoff (a] eu.c2.net>] 8760 8761 *) Fix for 'req': it was adding a null to request attributes. 8762 Also change the X509_LOOKUP and X509_INFO code to handle 8763 certificate auxiliary information. 8764 [Steve Henson] 8765 8766 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document 8767 the 'enc' command. 8768 [Steve Henson] 8769 8770 *) Add the possibility to add extra information to the memory leak 8771 detecting output, to form tracebacks, showing from where each 8772 allocation was originated: CRYPTO_push_info("constant string") adds 8773 the string plus current file name and line number to a per-thread 8774 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info() 8775 is like calling CYRPTO_pop_info() until the stack is empty. 8776 Also updated memory leak detection code to be multi-thread-safe. 8777 [Richard Levitte] 8778 8779 *) Add options -text and -noout to pkcs7 utility and delete the 8780 encryption options which never did anything. Update docs. 8781 [Steve Henson] 8782 8783 *) Add options to some of the utilities to allow the pass phrase 8784 to be included on either the command line (not recommended on 8785 OSes like Unix) or read from the environment. Update the 8786 manpages and fix a few bugs. 8787 [Steve Henson] 8788 8789 *) Add a few manpages for some of the openssl commands. 8790 [Steve Henson] 8791 8792 *) Fix the -revoke option in ca. It was freeing up memory twice, 8793 leaking and not finding already revoked certificates. 8794 [Steve Henson] 8795 8796 *) Extensive changes to support certificate auxiliary information. 8797 This involves the use of X509_CERT_AUX structure and X509_AUX 8798 functions. An X509_AUX function such as PEM_read_X509_AUX() 8799 can still read in a certificate file in the usual way but it 8800 will also read in any additional "auxiliary information". By 8801 doing things this way a fair degree of compatibility can be 8802 retained: existing certificates can have this information added 8803 using the new 'x509' options. 8804 8805 Current auxiliary information includes an "alias" and some trust 8806 settings. The trust settings will ultimately be used in enhanced 8807 certificate chain verification routines: currently a certificate 8808 can only be trusted if it is self signed and then it is trusted 8809 for all purposes. 8810 [Steve Henson] 8811 8812 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD). 8813 The problem was that one of the replacement routines had not been working 8814 since SSLeay releases. For now the offending routine has been replaced 8815 with non-optimised assembler. Even so, this now gives around 95% 8816 performance improvement for 1024 bit RSA signs. 8817 [Mark Cox] 8818 8819 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2 8820 handling. Most clients have the effective key size in bits equal to 8821 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key. 8822 A few however don't do this and instead use the size of the decrypted key 8823 to determine the RC2 key length and the AlgorithmIdentifier to determine 8824 the effective key length. In this case the effective key length can still 8825 be 40 bits but the key length can be 168 bits for example. This is fixed 8826 by manually forcing an RC2 key into the EVP_PKEY structure because the 8827 EVP code can't currently handle unusual RC2 key sizes: it always assumes 8828 the key length and effective key length are equal. 8829 [Steve Henson] 8830 8831 *) Add a bunch of functions that should simplify the creation of 8832 X509_NAME structures. Now you should be able to do: 8833 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0); 8834 and have it automatically work out the correct field type and fill in 8835 the structures. The more adventurous can try: 8836 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0); 8837 and it will (hopefully) work out the correct multibyte encoding. 8838 [Steve Henson] 8839 8840 *) Change the 'req' utility to use the new field handling and multibyte 8841 copy routines. Before the DN field creation was handled in an ad hoc 8842 way in req, ca, and x509 which was rather broken and didn't support 8843 BMPStrings or UTF8Strings. Since some software doesn't implement 8844 BMPStrings or UTF8Strings yet, they can be enabled using the config file 8845 using the dirstring_type option. See the new comment in the default 8846 openssl.cnf for more info. 8847 [Steve Henson] 8848 8849 *) Make crypto/rand/md_rand.c more robust: 8850 - Assure unique random numbers after fork(). 8851 - Make sure that concurrent threads access the global counter and 8852 md serializably so that we never lose entropy in them 8853 or use exactly the same state in multiple threads. 8854 Access to the large state is not always serializable because 8855 the additional locking could be a performance killer, and 8856 md should be large enough anyway. 8857 [Bodo Moeller] 8858 8859 *) New file apps/app_rand.c with commonly needed functionality 8860 for handling the random seed file. 8861 8862 Use the random seed file in some applications that previously did not: 8863 ca, 8864 dsaparam -genkey (which also ignored its '-rand' option), 8865 s_client, 8866 s_server, 8867 x509 (when signing). 8868 Except on systems with /dev/urandom, it is crucial to have a random 8869 seed file at least for key creation, DSA signing, and for DH exchanges; 8870 for RSA signatures we could do without one. 8871 8872 gendh and gendsa (unlike genrsa) used to read only the first byte 8873 of each file listed in the '-rand' option. The function as previously 8874 found in genrsa is now in app_rand.c and is used by all programs 8875 that support '-rand'. 8876 [Bodo Moeller] &nbs