5 Changes between 1.0.0j and 1.0.0k [5 Feb 2013]
7 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
9 This addresses the flaw in CBC record processing discovered by
10 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
11 at: http://www.isg.rhul.ac.uk/tls/
13 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
14 Security Group at Royal Holloway, University of London
15 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
16 Emilia Käsper for the initial patch.
18 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
20 *) Return an error when checking OCSP signatures when key is NULL.
21 This fixes a DoS attack. (CVE-2013-0166)
24 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
25 the right response is stapled. Also change SSL_get_certificate()
26 so it returns the certificate actually sent.
27 See http://rt.openssl.org/Ticket/Display.html?id=2836.
29 [Rob Stradling <rob.stradling@comodo.com>]
31 *) Fix possible deadlock when decoding public keys.
34 Changes between 1.0.0i and 1.0.0j [10 May 2012]
36 *) Sanity check record length before skipping explicit IV in DTLS
39 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
40 fuzzing as a service testing platform.
44 *) Initialise tkeylen properly when encrypting CMS messages.
45 Thanks to Solar Designer of Openwall for reporting this issue.
48 Changes between 1.0.0h and 1.0.0i [19 Apr 2012]
50 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
51 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
52 in CRYPTO_realloc_clean.
54 Thanks to Tavis Ormandy, Google Security Team, for discovering this
55 issue and to Adam Langley <agl@chromium.org> for fixing it.
57 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
59 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
61 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
62 in CMS and PKCS7 code. When RSA decryption fails use a random key for
63 content decryption and always return the same error. Note: this attack
64 needs on average 2^20 messages so it only affects automated senders. The
65 old behaviour can be reenabled in the CMS code by setting the
66 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
67 an MMA defence is not necessary.
68 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
69 this issue. (CVE-2012-0884)
72 *) Fix CVE-2011-4619: make sure we really are receiving a
73 client hello before rejecting multiple SGC restarts. Thanks to
74 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
77 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
79 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
80 Thanks to Antonio Martin, Enterprise Secure Access Research and
81 Development, Cisco Systems, Inc. for discovering this bug and
82 preparing a fix. (CVE-2012-0050)
85 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
87 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
88 of the Vaudenay padding oracle attack on CBC mode encryption
89 which enables an efficient plaintext recovery attack against
90 the OpenSSL implementation of DTLS. Their attack exploits timing
91 differences arising during decryption processing. A research
92 paper describing this attack can be found at:
93 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
94 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
95 Security Group at Royal Holloway, University of London
96 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
97 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
98 for preparing the fix. (CVE-2011-4108)
99 [Robin Seggelmann, Michael Tuexen]
101 *) Clear bytes used for block padding of SSL 3.0 records.
103 [Adam Langley (Google)]
105 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
106 Kadianakis <desnacked@gmail.com> for discovering this issue and
107 Adam Langley for preparing the fix. (CVE-2011-4619)
108 [Adam Langley (Google)]
110 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
111 [Andrey Kulikov <amdeich@gmail.com>]
113 *) Prevent malformed RFC3779 data triggering an assertion failure.
114 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
115 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
116 [Rob Austein <sra@hactrn.net>]
118 *) Improved PRNG seeding for VOS.
119 [Paul Green <Paul.Green@stratus.com>]
121 *) Fix ssl_ciph.c set-up race.
122 [Adam Langley (Google)]
124 *) Fix spurious failures in ecdsatest.c.
125 [Emilia Käsper (Google)]
127 *) Fix the BIO_f_buffer() implementation (which was mixing different
128 interpretations of the '..._len' fields).
129 [Adam Langley (Google)]
131 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
132 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
133 threads won't reuse the same blinding coefficients.
135 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
136 lock to call BN_BLINDING_invert_ex, and avoids one use of
137 BN_BLINDING_update for each BN_BLINDING structure (previously,
138 the last update always remained unused).
139 [Emilia Käsper (Google)]
141 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
142 [Bob Buckholz (Google)]
144 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
146 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
147 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
148 [Kaspar Brand <ossl@velox.ch>]
150 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
151 for multi-threaded use of ECDH. (CVE-2011-3210)
152 [Adam Langley (Google)]
154 *) Fix x509_name_ex_d2i memory leak on bad inputs.
157 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
158 signature public key algorithm by using OID xref utilities instead.
159 Before this you could only use some ECC ciphersuites with SHA1 only.
162 *) Add protection against ECDSA timing attacks as mentioned in the paper
163 by Billy Bob Brumley and Nicola Tuveri, see:
165 http://eprint.iacr.org/2011/232.pdf
167 [Billy Bob Brumley and Nicola Tuveri]
169 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
171 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
172 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
174 *) Fix bug in string printing code: if *any* escaping is enabled we must
175 escape the escape character (backslash) or the resulting string is
179 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
181 *) Disable code workaround for ancient and obsolete Netscape browsers
182 and servers: an attacker can use it in a ciphersuite downgrade attack.
183 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
186 *) Fixed J-PAKE implementation error, originally discovered by
187 Sebastien Martini, further info and confirmation from Stefan
188 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
191 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
193 *) Fix extension code to avoid race conditions which can result in a buffer
194 overrun vulnerability: resumed sessions must not be modified as they can
195 be shared by multiple threads. CVE-2010-3864
198 *) Fix WIN32 build system to correctly link an ENGINE directory into
202 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
204 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
206 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
208 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
210 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
211 context. The operation can be customised via the ctrl mechanism in
212 case ENGINEs want to include additional functionality.
215 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
218 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
219 output hashes compatible with older versions of OpenSSL.
220 [Willy Weisz <weisz@vcpc.univie.ac.at>]
222 *) Fix compression algorithm handling: if resuming a session use the
223 compression algorithm of the resumed session instead of determining
224 it from client hello again. Don't allow server to change algorithm.
227 *) Add load_crls() function to apps tidying load_certs() too. Add option
228 to verify utility to allow additional CRLs to be included.
231 *) Update OCSP request code to permit adding custom headers to the request:
232 some responders need this.
235 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
237 [Julia Lawall <julia@diku.dk>]
239 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
240 needlessly dereferenced structures, used obsolete functions and
241 didn't handle all updated verify codes correctly.
244 *) Disable MD2 in the default configuration.
247 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
248 indicate the initial BIO being pushed or popped. This makes it possible
249 to determine whether the BIO is the one explicitly called or as a result
250 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
251 it handles reference counts correctly and doesn't zero out the I/O bio
252 when it is not being explicitly popped. WARNING: applications which
253 included workarounds for the old buggy behaviour will need to be modified
254 or they could free up already freed BIOs.
257 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
258 renaming to all platforms (within the 0.9.8 branch, this was
259 done conditionally on Netware platforms to avoid a name clash).
260 [Guenter <lists@gknw.net>]
262 *) Add ECDHE and PSK support to DTLS.
263 [Michael Tuexen <tuexen@fh-muenster.de>]
265 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
269 *) Add "missing" function EVP_MD_flags() (without this the only way to
270 retrieve a digest flags is by accessing the structure directly. Update
271 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
272 or cipher is registered as in the "from" argument. Print out all
273 registered digests in the dgst usage message instead of manually
274 attempting to work them out.
277 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
278 this allows the use of compression and extensions. Change default cipher
279 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
280 by default unless an application cipher string requests it.
283 *) Alter match criteria in PKCS12_parse(). It used to try to use local
284 key ids to find matching certificates and keys but some PKCS#12 files
285 don't follow the (somewhat unwritten) rules and this strategy fails.
286 Now just gather all certificates together and the first private key
287 then look for the first certificate that matches the key.
290 *) Support use of registered digest and cipher names for dgst and cipher
291 commands instead of having to add each one as a special case. So now
298 openssl dgst -sha256 foo
300 and this works for ENGINE based algorithms too.
304 *) Update Gost ENGINE to support parameter files.
305 [Victor B. Wagner <vitus@cryptocom.ru>]
307 *) Support GeneralizedTime in ca utility.
308 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
310 *) Enhance the hash format used for certificate directory links. The new
311 form uses the canonical encoding (meaning equivalent names will work
312 even if they aren't identical) and uses SHA1 instead of MD5. This form
313 is incompatible with the older format and as a result c_rehash should
314 be used to rebuild symbolic links.
317 *) Make PKCS#8 the default write format for private keys, replacing the
318 traditional format. This form is standardised, more secure and doesn't
319 include an implicit MD5 dependency.
322 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
323 committed to OpenSSL should pass this lot as a minimum.
326 *) Add session ticket override functionality for use by EAP-FAST.
327 [Jouni Malinen <j@w1.fi>]
329 *) Modify HMAC functions to return a value. Since these can be implemented
330 in an ENGINE errors can occur.
333 *) Type-checked OBJ_bsearch_ex.
336 *) Type-checked OBJ_bsearch. Also some constification necessitated
337 by type-checking. Still to come: TXT_DB, bsearch(?),
338 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
342 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
343 seconds to a tm structure directly, instead of going through OS
344 specific date routines. This avoids any issues with OS routines such
345 as the year 2038 bug. New *_adj() functions for ASN1 time structures
346 and X509_time_adj_ex() to cover the extended range. The existing
347 X509_time_adj() is still usable and will no longer have any date issues.
350 *) Delta CRL support. New use deltas option which will attempt to locate
351 and search any appropriate delta CRLs available.
353 This work was sponsored by Google.
356 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
357 code and add additional score elements. Validate alternate CRL paths
358 as part of the CRL checking and indicate a new error "CRL path validation
359 error" in this case. Applications wanting additional details can use
360 the verify callback and check the new "parent" field. If this is not
361 NULL CRL path validation is taking place. Existing applications wont
362 see this because it requires extended CRL support which is off by
365 This work was sponsored by Google.
368 *) Support for freshest CRL extension.
370 This work was sponsored by Google.
373 *) Initial indirect CRL support. Currently only supported in the CRLs
374 passed directly and not via lookup. Process certificate issuer
375 CRL entry extension and lookup CRL entries by bother issuer name
376 and serial number. Check and process CRL issuer entry in IDP extension.
378 This work was sponsored by Google.
381 *) Add support for distinct certificate and CRL paths. The CRL issuer
382 certificate is validated separately in this case. Only enabled if
383 an extended CRL support flag is set: this flag will enable additional
384 CRL functionality in future.
386 This work was sponsored by Google.
389 *) Add support for policy mappings extension.
391 This work was sponsored by Google.
394 *) Fixes to pathlength constraint, self issued certificate handling,
395 policy processing to align with RFC3280 and PKITS tests.
397 This work was sponsored by Google.
400 *) Support for name constraints certificate extension. DN, email, DNS
401 and URI types are currently supported.
403 This work was sponsored by Google.
406 *) To cater for systems that provide a pointer-based thread ID rather
407 than numeric, deprecate the current numeric thread ID mechanism and
408 replace it with a structure and associated callback type. This
409 mechanism allows a numeric "hash" to be extracted from a thread ID in
410 either case, and on platforms where pointers are larger than 'long',
411 mixing is done to help ensure the numeric 'hash' is usable even if it
412 can't be guaranteed unique. The default mechanism is to use "&errno"
413 as a pointer-based thread ID to distinguish between threads.
415 Applications that want to provide their own thread IDs should now use
416 CRYPTO_THREADID_set_callback() to register a callback that will call
417 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
419 Note that ERR_remove_state() is now deprecated, because it is tied
420 to the assumption that thread IDs are numeric. ERR_remove_state(0)
421 to free the current thread's error state should be replaced by
422 ERR_remove_thread_state(NULL).
424 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
425 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
426 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
427 application was previously providing a numeric thread callback that
428 was inappropriate for distinguishing threads, then uniqueness might
429 have been obtained with &errno that happened immediately in the
430 intermediate development versions of OpenSSL; this is no longer the
431 case, the numeric thread callback will now override the automatic use
433 [Geoff Thorpe, with help from Bodo Moeller]
435 *) Initial support for different CRL issuing certificates. This covers a
436 simple case where the self issued certificates in the chain exist and
437 the real CRL issuer is higher in the existing chain.
439 This work was sponsored by Google.
442 *) Removed effectively defunct crypto/store from the build.
445 *) Revamp of STACK to provide stronger type-checking. Still to come:
446 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
447 ASN1_STRING, CONF_VALUE.
450 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
451 RAM on SSL connections. This option can save about 34k per idle SSL.
454 *) Revamp of LHASH to provide stronger type-checking. Still to come:
455 STACK, TXT_DB, bsearch, qsort.
458 *) Initial support for Cryptographic Message Syntax (aka CMS) based
459 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
460 support for data, signedData, compressedData, digestedData and
461 encryptedData, envelopedData types included. Scripts to check against
462 RFC4134 examples draft and interop and consistency checks of many
463 content types and variants.
466 *) Add options to enc utility to support use of zlib compression BIO.
469 *) Extend mk1mf to support importing of options and assembly language
470 files from Configure script, currently only included in VC-WIN32.
471 The assembly language rules can now optionally generate the source
472 files from the associated perl scripts.
475 *) Implement remaining functionality needed to support GOST ciphersuites.
476 Interop testing has been performed using CryptoPro implementations.
477 [Victor B. Wagner <vitus@cryptocom.ru>]
479 *) s390x assembler pack.
482 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
486 *) Implement Opaque PRF Input TLS extension as specified in
487 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
488 official specification yet and no extension type assignment by
489 IANA exists, this extension (for now) will have to be explicitly
490 enabled when building OpenSSL by providing the extension number
491 to use. For example, specify an option
493 -DTLSEXT_TYPE_opaque_prf_input=0x9527
495 to the "config" or "Configure" script to enable the extension,
496 assuming extension number 0x9527 (which is a completely arbitrary
497 and unofficial assignment based on the MD5 hash of the Internet
498 Draft). Note that by doing so, you potentially lose
499 interoperability with other TLS implementations since these might
500 be using the same extension number for other purposes.
502 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
503 opaque PRF input value to use in the handshake. This will create
504 an interal copy of the length-'len' string at 'src', and will
505 return non-zero for success.
507 To get more control and flexibility, provide a callback function
510 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
511 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
515 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
518 Callback function 'cb' will be called in handshakes, and is
519 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
520 Argument 'arg' is for application purposes (the value as given to
521 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
522 be provided to the callback function). The callback function
523 has to return non-zero to report success: usually 1 to use opaque
524 PRF input just if possible, or 2 to enforce use of the opaque PRF
525 input. In the latter case, the library will abort the handshake
526 if opaque PRF input is not successfully negotiated.
528 Arguments 'peerinput' and 'len' given to the callback function
529 will always be NULL and 0 in the case of a client. A server will
530 see the client's opaque PRF input through these variables if
531 available (NULL and 0 otherwise). Note that if the server
532 provides an opaque PRF input, the length must be the same as the
533 length of the client's opaque PRF input.
535 Note that the callback function will only be called when creating
536 a new session (session resumption can resume whatever was
537 previously negotiated), and will not be called in SSL 2.0
538 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
539 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
540 for applications that need to enforce opaque PRF input.
544 *) Update ssl code to support digests other than SHA1+MD5 for handshake
547 [Victor B. Wagner <vitus@cryptocom.ru>]
549 *) Add RFC4507 support to OpenSSL. This includes the corrections in
550 RFC4507bis. The encrypted ticket format is an encrypted encoded
551 SSL_SESSION structure, that way new session features are automatically
554 If a client application caches session in an SSL_SESSION structure
555 support is transparent because tickets are now stored in the encoded
558 The SSL_CTX structure automatically generates keys for ticket
559 protection in servers so again support should be possible
560 with no application modification.
562 If a client or server wishes to disable RFC4507 support then the option
563 SSL_OP_NO_TICKET can be set.
565 Add a TLS extension debugging callback to allow the contents of any client
566 or server extensions to be examined.
568 This work was sponsored by Google.
571 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
572 OpenSSL should now compile cleanly on gcc 4.2
573 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
575 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
576 support including streaming MAC support: this is required for GOST
578 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
580 *) Add option -stream to use PKCS#7 streaming in smime utility. New
581 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
582 to output in BER and PEM format.
585 *) Experimental support for use of HMAC via EVP_PKEY interface. This
586 allows HMAC to be handled via the EVP_DigestSign*() interface. The
587 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
588 ENGINE support for HMAC keys which are unextractable. New -mac and
589 -macopt options to dgst utility.
592 *) New option -sigopt to dgst utility. Update dgst to use
593 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
594 alternative signing paramaters such as X9.31 or PSS in the dgst
598 *) Change ssl_cipher_apply_rule(), the internal function that does
599 the work each time a ciphersuite string requests enabling
600 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
601 removing ("!foo+bar") a class of ciphersuites: Now it maintains
602 the order of disabled ciphersuites such that those ciphersuites
603 that most recently went from enabled to disabled not only stay
604 in order with respect to each other, but also have higher priority
605 than other disabled ciphersuites the next time ciphersuites are
608 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
609 the same ciphersuites as with "HIGH" alone, but in a specific
610 order where the PSK ciphersuites come first (since they are the
611 most recently disabled ciphersuites when "HIGH" is parsed).
613 Also, change ssl_create_cipher_list() (using this new
614 funcionality) such that between otherwise identical
615 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
619 *) Change ssl_create_cipher_list() so that it automatically
620 arranges the ciphersuites in reasonable order before starting
621 to process the rule string. Thus, the definition for "DEFAULT"
622 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
623 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
624 This makes it much easier to arrive at a reasonable default order
625 in applications for which anonymous ciphers are OK (meaning
626 that you can't actually use DEFAULT).
627 [Bodo Moeller; suggested by Victor Duchovni]
629 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
630 processing) into multiple integers instead of setting
631 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
632 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
633 (These masks as well as the individual bit definitions are hidden
634 away into the non-exported interface ssl/ssl_locl.h, so this
635 change to the definition of the SSL_CIPHER structure shouldn't
636 affect applications.) This give us more bits for each of these
637 categories, so there is no longer a need to coagulate AES128 and
638 AES256 into a single algorithm bit, and to coagulate Camellia128
639 and Camellia256 into a single algorithm bit, which has led to all
642 Thus, among other things, the kludge introduced in 0.9.7m and
643 0.9.8e for masking out AES256 independently of AES128 or masking
644 out Camellia256 independently of AES256 is not needed here in 0.9.9.
646 With the change, we also introduce new ciphersuite aliases that
647 so far were missing: "AES128", "AES256", "CAMELLIA128", and
651 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
652 Use the leftmost N bytes of the signature input if the input is
653 larger than the prime q (with N being the size in bytes of q).
656 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
657 it yet and it is largely untested.
660 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
663 *) Initial incomplete changes to avoid need for function casts in OpenSSL
664 some compilers (gcc 4.2 and later) reject their use. Safestack is
665 reimplemented. Update ASN1 to avoid use of legacy functions.
668 *) Win32/64 targets are linked with Winsock2.
671 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
672 to external functions. This can be used to increase CRL handling
673 efficiency especially when CRLs are very large by (for example) storing
674 the CRL revoked certificates in a database.
677 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
678 new CRLs added to a directory can be used. New command line option
679 -verify_return_error to s_client and s_server. This causes real errors
680 to be returned by the verify callback instead of carrying on no matter
681 what. This reflects the way a "real world" verify callback would behave.
684 *) GOST engine, supporting several GOST algorithms and public key formats.
685 Kindly donated by Cryptocom.
688 *) Partial support for Issuing Distribution Point CRL extension. CRLs
689 partitioned by DP are handled but no indirect CRL or reason partitioning
690 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
691 selected via a scoring technique which handles IDP and AKID in CRLs.
694 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
695 will ultimately be used for all verify operations: this will remove the
696 X509_STORE dependency on certificate verification and allow alternative
697 lookup methods. X509_STORE based implementations of these two callbacks.
700 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
701 Modify get_crl() to find a valid (unexpired) CRL if possible.
704 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
705 this would be called X509_CRL_cmp() but that name is already used by
706 a function that just compares CRL issuer names. Cache several CRL
707 extensions in X509_CRL structure and cache CRLDP in X509.
710 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
711 this maps equivalent X509_NAME structures into a consistent structure.
712 Name comparison can then be performed rapidly using memcmp().
715 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
719 *) Allow digests to supply their own micalg string for S/MIME type using
720 the ctrl EVP_MD_CTRL_MICALG.
723 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
724 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
725 ctrl. It can then customise the structure before and/or after signing
729 *) New function OBJ_add_sigid() to allow application defined signature OIDs
730 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
731 to free up any added signature OIDs.
734 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
735 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
736 digest and cipher tables. New options added to openssl utility:
737 list-message-digest-algorithms and list-cipher-algorithms.
740 *) Change the array representation of binary polynomials: the list
741 of degrees of non-zero coefficients is now terminated with -1.
742 Previously it was terminated with 0, which was also part of the
743 value; thus, the array representation was not applicable to
744 polynomials where t^0 has coefficient zero. This change makes
745 the array representation useful in a more general context.
748 *) Various modifications and fixes to SSL/TLS cipher string
749 handling. For ECC, the code now distinguishes between fixed ECDH
750 with RSA certificates on the one hand and with ECDSA certificates
751 on the other hand, since these are separate ciphersuites. The
752 unused code for Fortezza ciphersuites has been removed.
754 For consistency with EDH, ephemeral ECDH is now called "EECDH"
755 (not "ECDHE"). For consistency with the code for DH
756 certificates, use of ECDH certificates is now considered ECDH
757 authentication, not RSA or ECDSA authentication (the latter is
758 merely the CA's signing algorithm and not actively used in the
761 The temporary ciphersuite alias "ECCdraft" is no longer
762 available, and ECC ciphersuites are no longer excluded from "ALL"
763 and "DEFAULT". The following aliases now exist for RFC 4492
764 ciphersuites, most of these by analogy with the DH case:
766 kECDHr - ECDH cert, signed with RSA
767 kECDHe - ECDH cert, signed with ECDSA
768 kECDH - ECDH cert (signed with either RSA or ECDSA)
769 kEECDH - ephemeral ECDH
770 ECDH - ECDH cert or ephemeral ECDH
776 AECDH - anonymous ECDH
777 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
781 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
782 Use correct micalg parameters depending on digest(s) in signed message.
785 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
786 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
789 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
790 an engine to register a method. Add ENGINE lookups for methods and
791 functional reference processing.
794 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
795 EVP_{Sign,Verify}* which allow an application to customise the signature
799 *) New -resign option to smime utility. This adds one or more signers
800 to an existing PKCS#7 signedData structure. Also -md option to use an
801 alternative message digest algorithm for signing.
804 *) Tidy up PKCS#7 routines and add new functions to make it easier to
805 create PKCS7 structures containing multiple signers. Update smime
806 application to support multiple signers.
809 *) New -macalg option to pkcs12 utility to allow setting of an alternative
813 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
814 Reorganize PBE internals to lookup from a static table using NIDs,
815 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
816 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
817 PRF which will be automatically used with PBES2.
820 *) Replace the algorithm specific calls to generate keys in "req" with the
824 *) Update PKCS#7 enveloped data routines to use new API. This is now
825 supported by any public key method supporting the encrypt operation. A
826 ctrl is added to allow the public key algorithm to examine or modify
827 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
831 *) Add a ctrl to asn1 method to allow a public key algorithm to express
832 a default digest type to use. In most cases this will be SHA1 but some
833 algorithms (such as GOST) need to specify an alternative digest. The
834 return value indicates how strong the prefernce is 1 means optional and
835 2 is mandatory (that is it is the only supported type). Modify
836 ASN1_item_sign() to accept a NULL digest argument to indicate it should
837 use the default md. Update openssl utilities to use the default digest
838 type for signing if it is not explicitly indicated.
841 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
842 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
843 signing method from the key type. This effectively removes the link
844 between digests and public key types.
847 *) Add an OID cross reference table and utility functions. Its purpose is to
848 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
849 rsaEncryption. This will allow some of the algorithm specific hackery
850 needed to use the correct OID to be removed.
853 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
854 structures for PKCS7_sign(). They are now set up by the relevant public
858 *) Add provisional EC pkey method with support for ECDSA and ECDH.
861 *) Add support for key derivation (agreement) in the API, DH method and
865 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
866 public and private key formats. As a side effect these add additional
867 command line functionality not previously available: DSA signatures can be
868 generated and verified using pkeyutl and DH key support and generation in
873 [Oliver Tappe <zooey@hirschkaefer.de>]
875 *) New make target "install_html_docs" installs HTML renditions of the
877 [Oliver Tappe <zooey@hirschkaefer.de>]
879 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
880 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
881 support key and parameter generation and add initial key generation
882 functionality for RSA.
885 *) Add functions for main EVP_PKEY_method operations. The undocumented
886 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
887 EVP_PKEY_{encrypt,decrypt}_old.
890 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
891 key API, doesn't do much yet.
894 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
895 public key algorithms. New option to openssl utility:
896 "list-public-key-algorithms" to print out info.
899 *) Implement the Supported Elliptic Curves Extension for
900 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
903 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
904 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
907 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
908 utilities such as rsa, dsa, dsaparam etc except they process any key
912 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
913 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
914 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
918 *) Initial support for pluggable public key ASN1.
919 De-spaghettify the public key ASN1 handling. Move public and private
920 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
921 algorithm specific handling to a single module within the relevant
922 algorithm directory. Add functions to allow (near) opaque processing
923 of public and private key structures.
926 *) Implement the Supported Point Formats Extension for
927 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
930 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
931 for the psk identity [hint] and the psk callback functions to the
932 SSL_SESSION, SSL and SSL_CTX structure.
935 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
939 SSL_CTX_use_psk_identity_hint
940 SSL_get_psk_identity_hint
942 SSL_use_psk_identity_hint
944 [Mika Kousa and Pasi Eronen of Nokia Corporation]
946 *) Add RFC 3161 compliant time stamp request creation, response generation
947 and response verification functionality.
948 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
950 *) Add initial support for TLS extensions, specifically for the server_name
951 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
952 have new members for a host name. The SSL data structure has an
953 additional member SSL_CTX *initial_ctx so that new sessions can be
954 stored in that context to allow for session resumption, even after the
955 SSL has been switched to a new SSL_CTX in reaction to a client's
956 server_name extension.
958 New functions (subject to change):
961 SSL_get_servername_type()
964 New CTRL codes and macros (subject to change):
966 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
967 - SSL_CTX_set_tlsext_servername_callback()
968 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
969 - SSL_CTX_set_tlsext_servername_arg()
970 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
972 openssl s_client has a new '-servername ...' option.
974 openssl s_server has new options '-servername_host ...', '-cert2 ...',
975 '-key2 ...', '-servername_fatal' (subject to change). This allows
976 testing the HostName extension for a specific single host name ('-cert'
977 and '-key' remain fallbacks for handshakes without HostName
978 negotiation). If the unrecogninzed_name alert has to be sent, this by
979 default is a warning; it becomes fatal with the '-servername_fatal'
982 [Peter Sylvester, Remy Allais, Christophe Renou]
984 *) Whirlpool hash implementation is added.
987 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
988 bn(64,32). Because of instruction set limitations it doesn't have
989 any negative impact on performance. This was done mostly in order
990 to make it possible to share assembler modules, such as bn_mul_mont
991 implementations, between 32- and 64-bit builds without hassle.
994 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
995 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
999 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1000 dedicated Montgomery multiplication procedure, is introduced.
1001 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1002 "64-bit" performance on certain 32-bit targets.
1005 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1006 in SSL structures. New SSL ctrl to set maximum send fragment size.
1007 Save memory by seeting the I/O buffer sizes dynamically instead of
1008 using the maximum available value.
1011 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1012 in addition to the text details.
1015 *) Very, very preliminary EXPERIMENTAL support for printing of general
1016 ASN1 structures. This currently produces rather ugly output and doesn't
1017 handle several customised structures at all.
1020 *) Integrated support for PVK file format and some related formats such
1021 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1022 these in the 'rsa' and 'dsa' utilities.
1025 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1028 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1029 place for the (very old) "NETSCAPE" format certificates which are now
1030 handled using new ASN1 code equivalents.
1033 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1034 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1035 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1038 *) Modify CRL distribution points extension code to print out previously
1039 unsupported fields. Enhance extension setting code to allow setting of
1043 *) Add print and set support for Issuing Distribution Point CRL extension.
1046 *) Change 'Configure' script to enable Camellia by default.
1049 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
1051 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1052 Thanks to Antonio Martin, Enterprise Secure Access Research and
1053 Development, Cisco Systems, Inc. for discovering this bug and
1054 preparing a fix. (CVE-2012-0050)
1057 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
1059 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1060 of the Vaudenay padding oracle attack on CBC mode encryption
1061 which enables an efficient plaintext recovery attack against
1062 the OpenSSL implementation of DTLS. Their attack exploits timing
1063 differences arising during decryption processing. A research
1064 paper describing this attack can be found at:
1065 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1066 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1067 Security Group at Royal Holloway, University of London
1068 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1069 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1070 for preparing the fix. (CVE-2011-4108)
1071 [Robin Seggelmann, Michael Tuexen]
1073 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
1074 [Ben Laurie, Kasper <ekasper@google.com>]
1076 *) Clear bytes used for block padding of SSL 3.0 records.
1078 [Adam Langley (Google)]
1080 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1081 Kadianakis <desnacked@gmail.com> for discovering this issue and
1082 Adam Langley for preparing the fix. (CVE-2011-4619)
1083 [Adam Langley (Google)]
1085 *) Prevent malformed RFC3779 data triggering an assertion failure.
1086 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1087 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1088 [Rob Austein <sra@hactrn.net>]
1090 *) Fix ssl_ciph.c set-up race.
1091 [Adam Langley (Google)]
1093 *) Fix spurious failures in ecdsatest.c.
1094 [Emilia Käsper (Google)]
1096 *) Fix the BIO_f_buffer() implementation (which was mixing different
1097 interpretations of the '..._len' fields).
1098 [Adam Langley (Google)]
1100 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1101 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1102 threads won't reuse the same blinding coefficients.
1104 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1105 lock to call BN_BLINDING_invert_ex, and avoids one use of
1106 BN_BLINDING_update for each BN_BLINDING structure (previously,
1107 the last update always remained unused).
1108 [Emilia Käsper (Google)]
1110 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1111 for multi-threaded use of ECDH.
1112 [Adam Langley (Google)]
1114 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1117 *) Add protection against ECDSA timing attacks as mentioned in the paper
1118 by Billy Bob Brumley and Nicola Tuveri, see:
1120 http://eprint.iacr.org/2011/232.pdf
1122 [Billy Bob Brumley and Nicola Tuveri]
1124 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1126 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1127 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1129 *) Fix bug in string printing code: if *any* escaping is enabled we must
1130 escape the escape character (backslash) or the resulting string is
1134 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1136 *) Disable code workaround for ancient and obsolete Netscape browsers
1137 and servers: an attacker can use it in a ciphersuite downgrade attack.
1138 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1141 *) Fixed J-PAKE implementation error, originally discovered by
1142 Sebastien Martini, further info and confirmation from Stefan
1143 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1146 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1148 *) Fix extension code to avoid race conditions which can result in a buffer
1149 overrun vulnerability: resumed sessions must not be modified as they can
1150 be shared by multiple threads. CVE-2010-3864
1153 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1156 *) Don't reencode certificate when calculating signature: cache and use
1157 the original encoding instead. This makes signature verification of
1158 some broken encodings work correctly.
1161 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1162 is also one of the inputs.
1163 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1165 *) Don't repeatedly append PBE algorithms to table if they already exist.
1166 Sort table on each new add. This effectively makes the table read only
1167 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1171 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1173 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1176 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1177 access or freeing data twice (CVE-2010-0742)
1178 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1180 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1181 common in certificates and some applications which only call
1182 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1186 Reduce copying into .apps and .test in makevms.com
1187 Don't try to use blank CA certificate in CA.com
1188 Allow use of C files from original directories in maketests.com
1189 [Steven M. Schweda" <sms@antinode.info>]
1191 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1193 *) When rejecting SSL/TLS records due to an incorrect version number, never
1194 update s->server with a new major version number. As of
1195 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1196 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1197 the previous behavior could result in a read attempt at NULL when
1198 receiving specific incorrect SSL/TLS records once record payload
1199 protection is active. (CVE-2010-0740)
1200 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1202 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1203 could be crashed if the relevant tables were not present (e.g. chrooted).
1204 [Tomas Hoger <thoger@redhat.com>]
1206 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1208 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1209 [Martin Olsson, Neel Mehta]
1211 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1212 accommodate for stack sorting, always a write lock!).
1215 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1216 excessive delays in the RAND_poll(): over a minute. As a workaround
1217 include a time check in the inner Heap32Next loop too.
1220 *) The code that handled flushing of data in SSL/TLS originally used the
1221 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1222 the problem outlined in PR#1949. The fix suggested there however can
1223 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1224 of Apache). So instead simplify the code to flush unconditionally.
1225 This should be fine since flushing with no data to flush is a no op.
1228 *) Handle TLS versions 2.0 and later properly and correctly use the
1229 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1230 off ancient servers have a habit of sticking around for a while...
1233 *) Modify compression code so it frees up structures without using the
1234 ex_data callbacks. This works around a problem where some applications
1235 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1236 restarting) then use compression (e.g. SSL with compression) later.
1237 This results in significant per-connection memory leaks and
1238 has caused some security issues including CVE-2008-1678 and
1242 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1243 change when encrypting or decrypting.
1246 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1247 connect and renegotiate with servers which do not support RI.
1248 Until RI is more widely deployed this option is enabled by default.
1251 *) Add "missing" ssl ctrls to clear options and mode.
1254 *) If client attempts to renegotiate and doesn't support RI respond with
1255 a no_renegotiation alert as required by RFC5746. Some renegotiating
1256 TLS clients will continue a connection gracefully when they receive
1257 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1258 waiting for a server hello which it will never receive. Now we treat a
1259 received no_renegotiation alert as a fatal error. This is because
1260 applications requesting a renegotiation might well expect it to succeed
1261 and would have no code in place to handle the server denying it so the
1262 only safe thing to do is to terminate the connection.
1265 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1266 peer supports secure renegotiation and 0 otherwise. Print out peer
1267 renegotiation support in s_client/s_server.
1270 *) Replace the highly broken and deprecated SPKAC certification method with
1271 the updated NID creation version. This should correctly handle UTF8.
1274 *) Implement RFC5746. Re-enable renegotiation but require the extension
1275 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1276 turns out to be a bad idea. It has been replaced by
1277 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1278 SSL_CTX_set_options(). This is really not recommended unless you
1279 know what you are doing.
1280 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1282 *) Fixes to stateless session resumption handling. Use initial_ctx when
1283 issuing and attempting to decrypt tickets in case it has changed during
1284 servername handling. Use a non-zero length session ID when attempting
1285 stateless session resumption: this makes it possible to determine if
1286 a resumption has occurred immediately after receiving server hello
1287 (several places in OpenSSL subtly assume this) instead of later in
1291 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1292 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1293 fixes for a few places where the return code is not checked
1295 [Julia Lawall <julia@diku.dk>]
1297 *) Add --strict-warnings option to Configure script to include devteam
1298 warnings in other configurations.
1301 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1302 makes it possible to install openssl libraries in locations which
1303 have names other than "lib", for example "/usr/lib64" which some
1305 [Steve Henson, based on patch from Jeremy Utley]
1307 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1308 X690 8.9.12 and can produce some misleading textual output of OIDs.
1309 [Steve Henson, reported by Dan Kaminsky]
1311 *) Delete MD2 from algorithm tables. This follows the recommendation in
1312 several standards that it is not used in new applications due to
1313 several cryptographic weaknesses. For binary compatibility reasons
1314 the MD2 API is still compiled in by default.
1317 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1321 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1322 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1324 [Guenter <lists@gknw.net>]
1326 *) Fix the server certificate chain building code to use X509_verify_cert(),
1327 it used to have an ad-hoc builder which was unable to cope with anything
1328 other than a simple chain.
1329 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1331 *) Don't check self signed certificate signatures in X509_verify_cert()
1332 by default (a flag can override this): it just wastes time without
1333 adding any security. As a useful side effect self signed root CAs
1334 with non-FIPS digests are now usable in FIPS mode.
1337 *) In dtls1_process_out_of_seq_message() the check if the current message
1338 is already buffered was missing. For every new message was memory
1339 allocated, allowing an attacker to perform an denial of service attack
1340 with sending out of seq handshake messages until there is no memory
1341 left. Additionally every future messege was buffered, even if the
1342 sequence number made no sense and would be part of another handshake.
1343 So only messages with sequence numbers less than 10 in advance will be
1344 buffered. (CVE-2009-1378)
1345 [Robin Seggelmann, discovered by Daniel Mentz]
1347 *) Records are buffered if they arrive with a future epoch to be
1348 processed after finishing the corresponding handshake. There is
1349 currently no limitation to this buffer allowing an attacker to perform
1350 a DOS attack with sending records with future epochs until there is no
1351 memory left. This patch adds the pqueue_size() function to detemine
1352 the size of a buffer and limits the record buffer to 100 entries.
1354 [Robin Seggelmann, discovered by Daniel Mentz]
1356 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1357 parent structure is freed. (CVE-2009-1379)
1360 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1361 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1364 [Ilya O. <vrghost@gmail.com>]
1366 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1368 *) Disable renegotiation completely - this fixes a severe security
1369 problem (CVE-2009-3555) at the cost of breaking all
1370 renegotiation. Renegotiation can be re-enabled by setting
1371 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1372 run-time. This is really not recommended unless you know what
1376 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1378 *) Don't set val to NULL when freeing up structures, it is freed up by
1379 underlying code. If sizeof(void *) > sizeof(long) this can result in
1380 zeroing past the valid field. (CVE-2009-0789)
1381 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1383 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1384 checked correctly. This would allow some invalid signed attributes to
1385 appear to verify correctly. (CVE-2009-0591)
1386 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1388 *) Reject UniversalString and BMPString types with invalid lengths. This
1389 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1390 a legal length. (CVE-2009-0590)
1393 *) Set S/MIME signing as the default purpose rather than setting it
1394 unconditionally. This allows applications to override it at the store
1398 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1399 to handle some structures.
1402 *) Improve efficiency of mem_gets: don't search whole buffer each time
1404 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1406 *) New -hex option for openssl rand.
1409 *) Print out UTF8String and NumericString when parsing ASN1.
1412 *) Support NumericString type for name components.
1415 *) Allow CC in the environment to override the automatically chosen
1416 compiler. Note that nothing is done to ensure flags work with the
1420 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1422 *) Properly check EVP_VerifyFinal() and similar return values
1424 [Ben Laurie, Bodo Moeller, Google Security Team]
1426 *) Enable TLS extensions by default.
1429 *) Allow the CHIL engine to be loaded, whether the application is
1430 multithreaded or not. (This does not release the developer from the
1431 obligation to set up the dynamic locking callbacks.)
1432 [Sander Temme <sander@temme.net>]
1434 *) Use correct exit code if there is an error in dgst command.
1435 [Steve Henson; problem pointed out by Roland Dirlewanger]
1437 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1438 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1441 *) Add experimental JPAKE support, including demo authentication in
1442 s_client and s_server.
1445 *) Set the comparison function in v3_addr_canonize().
1446 [Rob Austein <sra@hactrn.net>]
1448 *) Add support for XMPP STARTTLS in s_client.
1449 [Philip Paeps <philip@freebsd.org>]
1451 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1452 to ensure that even with this option, only ciphersuites in the
1453 server's preference list will be accepted. (Note that the option
1454 applies only when resuming a session, so the earlier behavior was
1455 just about the algorithm choice for symmetric cryptography.)
1458 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1460 *) Fix NULL pointer dereference if a DTLS server received
1461 ChangeCipherSpec as first record (CVE-2009-1386).
1464 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1465 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1468 *) The fix in 0.9.8c that supposedly got rid of unsafe
1469 double-checked locking was incomplete for RSA blinding,
1470 addressing just one layer of what turns out to have been
1471 doubly unsafe triple-checked locking.
1473 So now fix this for real by retiring the MONT_HELPER macro
1474 in crypto/rsa/rsa_eay.c.
1476 [Bodo Moeller; problem pointed out by Marius Schilder]
1478 *) Various precautionary measures:
1480 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1482 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1483 (NB: This would require knowledge of the secret session ticket key
1484 to exploit, in which case you'd be SOL either way.)
1486 - Change bn_nist.c so that it will properly handle input BIGNUMs
1487 outside the expected range.
1489 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1492 [Neel Mehta, Bodo Moeller]
1494 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1495 the load fails. Useful for distros.
1496 [Ben Laurie and the FreeBSD team]
1498 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1501 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1504 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1506 This work was sponsored by Logica.
1509 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1510 keystores. Support for SSL/TLS client authentication too.
1511 Not compiled unless enable-capieng specified to Configure.
1513 This work was sponsored by Logica.
1516 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1517 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1518 attribute creation routines such as certifcate requests and PKCS#12
1522 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1524 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1525 handshake which could lead to a cilent crash as found using the
1526 Codenomicon TLS test suite (CVE-2008-1672)
1527 [Steve Henson, Mark Cox]
1529 *) Fix double free in TLS server name extensions which could lead to
1530 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1533 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1535 Clear the error queue to ensure that error entries left from
1536 older function calls do not interfere with the correct operation.
1537 [Lutz Jaenicke, Erik de Castro Lopo]
1539 *) Remove root CA certificates of commercial CAs:
1541 The OpenSSL project does not recommend any specific CA and does not
1542 have any policy with respect to including or excluding any CA.
1543 Therefore it does not make any sense to ship an arbitrary selection
1544 of root CA certificates with the OpenSSL software.
1547 *) RSA OAEP patches to fix two separate invalid memory reads.
1548 The first one involves inputs when 'lzero' is greater than
1549 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1550 before the beginning of from). The second one involves inputs where
1551 the 'db' section contains nothing but zeroes (there is a one-byte
1552 invalid read after the end of 'db').
1553 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1555 *) Partial backport from 0.9.9-dev:
1557 Introduce bn_mul_mont (dedicated Montgomery multiplication
1558 procedure) as a candidate for BIGNUM assembler implementation.
1559 While 0.9.9-dev uses assembler for various architectures, only
1560 x86_64 is available by default here in the 0.9.8 branch, and
1561 32-bit x86 is available through a compile-time setting.
1563 To try the 32-bit x86 assembler implementation, use Configure
1564 option "enable-montasm" (which exists only for this backport).
1566 As "enable-montasm" for 32-bit x86 disclaims code stability
1567 anyway, in this constellation we activate additional code
1568 backported from 0.9.9-dev for further performance improvements,
1569 namely BN_from_montgomery_word. (To enable this otherwise,
1570 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1572 [Andy Polyakov (backport partially by Bodo Moeller)]
1574 *) Add TLS session ticket callback. This allows an application to set
1575 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1576 values. This is useful for key rollover for example where several key
1577 sets may exist with different names.
1580 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1581 This was broken until now in 0.9.8 releases, such that the only way
1582 a registered ENGINE could be used (assuming it initialises
1583 successfully on the host) was to explicitly set it as the default
1584 for the relevant algorithms. This is in contradiction with 0.9.7
1585 behaviour and the documentation. With this fix, when an ENGINE is
1586 registered into a given algorithm's table of implementations, the
1587 'uptodate' flag is reset so that auto-discovery will be used next
1588 time a new context for that algorithm attempts to select an
1590 [Ian Lister (tweaked by Geoff Thorpe)]
1592 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1593 implemention in the following ways:
1595 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1598 Lack of BER streaming support means one pass streaming processing is
1599 only supported if data is detached: setting the streaming flag is
1600 ignored for embedded content.
1602 CMS support is disabled by default and must be explicitly enabled
1603 with the enable-cms configuration option.
1606 *) Update the GMP engine glue to do direct copies between BIGNUM and
1607 mpz_t when openssl and GMP use the same limb size. Otherwise the
1608 existing "conversion via a text string export" trick is still used.
1609 [Paul Sheer <paulsheer@gmail.com>]
1611 *) Zlib compression BIO. This is a filter BIO which compressed and
1612 uncompresses any data passed through it.
1615 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1616 RFC3394 compatible AES key wrapping.
1619 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1620 sets string data without copying. X509_ALGOR_set0() and
1621 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1622 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1623 from an X509_ATTRIBUTE structure optionally checking it occurs only
1624 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1628 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1629 to get the expected BN_FLG_CONSTTIME behavior.
1630 [Bodo Moeller (Google)]
1634 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1635 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1636 - added some more tests to do_tests.pl
1637 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1638 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1639 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1640 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1641 - various changes to netware.pl to enable gcc-cross builds on Win32
1643 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1644 - various changes to fix missing prototype warnings
1645 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1646 - added AES, WHIRLPOOL and CPUID assembler code to build files
1647 - added missing AES assembler make rules to mk1mf.pl
1648 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1649 [Guenter Knauf <eflash@gmx.net>]
1651 *) Implement certificate status request TLS extension defined in RFC3546.
1652 A client can set the appropriate parameters and receive the encoded
1653 OCSP response via a callback. A server can query the supplied parameters
1654 and set the encoded OCSP response in the callback. Add simplified examples
1655 to s_client and s_server.
1658 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1660 *) Fix various bugs:
1661 + Binary incompatibility of ssl_ctx_st structure
1662 + DTLS interoperation with non-compliant servers
1663 + Don't call get_session_cb() without proposed session
1664 + Fix ia64 assembler code
1665 [Andy Polyakov, Steve Henson]
1667 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1669 *) DTLS Handshake overhaul. There were longstanding issues with
1670 OpenSSL DTLS implementation, which were making it impossible for
1671 RFC 4347 compliant client to communicate with OpenSSL server.
1672 Unfortunately just fixing these incompatibilities would "cut off"
1673 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1674 server keeps tolerating non RFC compliant syntax. The opposite is
1675 not true, 0.9.8f client can not communicate with earlier server.
1676 This update even addresses CVE-2007-4995.
1679 *) Changes to avoid need for function casts in OpenSSL: some compilers
1680 (gcc 4.2 and later) reject their use.
1681 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1684 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1685 RFC4507bis. The encrypted ticket format is an encrypted encoded
1686 SSL_SESSION structure, that way new session features are automatically
1689 If a client application caches session in an SSL_SESSION structure
1690 support is transparent because tickets are now stored in the encoded
1693 The SSL_CTX structure automatically generates keys for ticket
1694 protection in servers so again support should be possible
1695 with no application modification.
1697 If a client or server wishes to disable RFC4507 support then the option
1698 SSL_OP_NO_TICKET can be set.
1700 Add a TLS extension debugging callback to allow the contents of any client
1701 or server extensions to be examined.
1703 This work was sponsored by Google.
1706 *) Add initial support for TLS extensions, specifically for the server_name
1707 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1708 have new members for a host name. The SSL data structure has an
1709 additional member SSL_CTX *initial_ctx so that new sessions can be
1710 stored in that context to allow for session resumption, even after the
1711 SSL has been switched to a new SSL_CTX in reaction to a client's
1712 server_name extension.
1714 New functions (subject to change):
1716 SSL_get_servername()
1717 SSL_get_servername_type()
1720 New CTRL codes and macros (subject to change):
1722 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1723 - SSL_CTX_set_tlsext_servername_callback()
1724 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1725 - SSL_CTX_set_tlsext_servername_arg()
1726 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1728 openssl s_client has a new '-servername ...' option.
1730 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1731 '-key2 ...', '-servername_fatal' (subject to change). This allows
1732 testing the HostName extension for a specific single host name ('-cert'
1733 and '-key' remain fallbacks for handshakes without HostName
1734 negotiation). If the unrecogninzed_name alert has to be sent, this by
1735 default is a warning; it becomes fatal with the '-servername_fatal'
1738 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1740 *) Add AES and SSE2 assembly language support to VC++ build.
1743 *) Mitigate attack on final subtraction in Montgomery reduction.
1746 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1747 (which previously caused an internal error).
1750 *) Squeeze another 10% out of IGE mode when in != out.
1753 *) AES IGE mode speedup.
1754 [Dean Gaudet (Google)]
1756 *) Add the Korean symmetric 128-bit cipher SEED (see
1757 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1758 add SEED ciphersuites from RFC 4162:
1760 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1761 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1762 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1763 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1765 To minimize changes between patchlevels in the OpenSSL 0.9.8
1766 series, SEED remains excluded from compilation unless OpenSSL
1767 is configured with 'enable-seed'.
1768 [KISA, Bodo Moeller]
1770 *) Mitigate branch prediction attacks, which can be practical if a
1771 single processor is shared, allowing a spy process to extract
1772 information. For detailed background information, see
1773 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1774 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1775 and Necessary Software Countermeasures"). The core of the change
1776 are new versions BN_div_no_branch() and
1777 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1778 respectively, which are slower, but avoid the security-relevant
1779 conditional branches. These are automatically called by BN_div()
1780 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1781 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1782 remove a conditional branch.
1784 BN_FLG_CONSTTIME is the new name for the previous
1785 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1786 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1787 in the exponent causes BN_mod_exp_mont() to use the alternative
1788 implementation in BN_mod_exp_mont_consttime().) The old name
1789 remains as a deprecated alias.
1791 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1792 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1793 constant-time implementations for more than just exponentiation.
1794 Here too the old name is kept as a deprecated alias.
1796 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1797 the BN_BLINDING structure gets an independent copy of the
1798 modulus. This means that the previous "BIGNUM *m" argument to
1799 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1800 essentially becomes "const BIGNUM *m", although we can't actually
1801 change this in the header file before 0.9.9. It allows
1802 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1803 enable BN_FLG_CONSTTIME.
1805 [Matthew D Wood (Intel Corp)]
1807 *) In the SSL/TLS server implementation, be strict about session ID
1808 context matching (which matters if an application uses a single
1809 external cache for different purposes). Previously,
1810 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1811 set. This did ensure strict client verification, but meant that,
1812 with applications using a single external cache for quite
1813 different requirements, clients could circumvent ciphersuite
1814 restrictions for a given session ID context by starting a session
1815 in a different context.
1818 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1819 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1820 authentication-only ciphersuites.
1823 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1824 not complete and could lead to a possible single byte overflow
1825 (CVE-2007-5135) [Ben Laurie]
1827 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1829 *) Since AES128 and AES256 (and similarly Camellia128 and
1830 Camellia256) share a single mask bit in the logic of
1831 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1832 kludge to work properly if AES128 is available and AES256 isn't
1833 (or if Camellia128 is available and Camellia256 isn't).
1836 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1837 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1838 When a point or a seed is encoded in a BIT STRING, we need to
1839 prevent the removal of trailing zero bits to get the proper DER
1840 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1841 of a NamedBitList, for which trailing 0 bits need to be removed.)
1844 *) Have SSL/TLS server implementation tolerate "mismatched" record
1845 protocol version while receiving ClientHello even if the
1846 ClientHello is fragmented. (The server can't insist on the
1847 particular protocol version it has chosen before the ServerHello
1848 message has informed the client about his choice.)
1851 *) Add RFC 3779 support.
1852 [Rob Austein for ARIN, Ben Laurie]
1854 *) Load error codes if they are not already present instead of using a
1855 static variable. This allows them to be cleanly unloaded and reloaded.
1856 Improve header file function name parsing.
1859 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1860 or CAPABILITY handshake as required by RFCs.
1863 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1865 *) Introduce limits to prevent malicious keys being able to
1866 cause a denial of service. (CVE-2006-2940)
1867 [Steve Henson, Bodo Moeller]
1869 *) Fix ASN.1 parsing of certain invalid structures that can result
1870 in a denial of service. (CVE-2006-2937) [Steve Henson]
1872 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1873 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1875 *) Fix SSL client code which could crash if connecting to a
1876 malicious SSLv2 server. (CVE-2006-4343)
1877 [Tavis Ormandy and Will Drewry, Google Security Team]
1879 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1880 match only those. Before that, "AES256-SHA" would be interpreted
1881 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1882 the same strength classification in 0.9.7h) as we currently only
1883 have a single AES bit in the ciphersuite description bitmap.
1884 That change, however, also applied to ciphersuite strings such as
1885 "RC4-MD5" that intentionally matched multiple ciphersuites --
1886 namely, SSL 2.0 ciphersuites in addition to the more common ones
1887 from SSL 3.0/TLS 1.0.
1889 So we change the selection algorithm again: Naming an explicit
1890 ciphersuite selects this one ciphersuite, and any other similar
1891 ciphersuite (same bitmap) from *other* protocol versions.
1892 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1893 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1895 Since SSL 2.0 does not have any ciphersuites for which the
1896 128/256 bit distinction would be relevant, this works for now.
1897 The proper fix will be to use different bits for AES128 and
1898 AES256, which would have avoided the problems from the beginning;
1899 however, bits are scarce, so we can only do this in a new release
1900 (not just a patchlevel) when we can change the SSL_CIPHER
1901 definition to split the single 'unsigned long mask' bitmap into
1902 multiple values to extend the available space.
1906 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1908 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1909 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1911 *) Add AES IGE and biIGE modes.
1914 *) Change the Unix randomness entropy gathering to use poll() when
1915 possible instead of select(), since the latter has some
1916 undesirable limitations.
1917 [Darryl Miles via Richard Levitte and Bodo Moeller]
1919 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1920 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1921 cannot be implicitly activated as part of, e.g., the "AES" alias.
1922 However, please upgrade to OpenSSL 0.9.9[-dev] for
1923 non-experimental use of the ECC ciphersuites to get TLS extension
1924 support, which is required for curve and point format negotiation
1925 to avoid potential handshake problems.
1928 *) Disable rogue ciphersuites:
1930 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1931 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1932 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1934 The latter two were purportedly from
1935 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1938 Also deactivate the remaining ciphersuites from
1939 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1940 unofficial, and the ID has long expired.
1943 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1944 dual-core machines) and other potential thread-safety issues.
1947 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1948 versions), which is now available for royalty-free use
1949 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1950 Also, add Camellia TLS ciphersuites from RFC 4132.
1952 To minimize changes between patchlevels in the OpenSSL 0.9.8
1953 series, Camellia remains excluded from compilation unless OpenSSL
1954 is configured with 'enable-camellia'.
1957 *) Disable the padding bug check when compression is in use. The padding
1958 bug check assumes the first packet is of even length, this is not
1959 necessarily true if compresssion is enabled and can result in false
1960 positives causing handshake failure. The actual bug test is ancient
1961 code so it is hoped that implementations will either have fixed it by
1962 now or any which still have the bug do not support compression.
1965 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1967 *) When applying a cipher rule check to see if string match is an explicit
1968 cipher suite and only match that one cipher suite if it is.
1971 *) Link in manifests for VC++ if needed.
1972 [Austin Ziegler <halostatue@gmail.com>]
1974 *) Update support for ECC-based TLS ciphersuites according to
1975 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1976 TLS extensions, which are supported starting with the 0.9.9
1977 branch, not in the OpenSSL 0.9.8 branch).
1980 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1981 opaque EVP_CIPHER_CTX handling.
1984 *) Fixes and enhancements to zlib compression code. We now only use
1985 "zlib1.dll" and use the default __cdecl calling convention on Win32
1986 to conform with the standards mentioned here:
1987 http://www.zlib.net/DLL_FAQ.txt
1988 Static zlib linking now works on Windows and the new --with-zlib-include
1989 --with-zlib-lib options to Configure can be used to supply the location
1990 of the headers and library. Gracefully handle case where zlib library
1994 *) Several fixes and enhancements to the OID generation code. The old code
1995 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1996 handle numbers larger than ULONG_MAX, truncated printing and had a
1997 non standard OBJ_obj2txt() behaviour.
2000 *) Add support for building of engines under engine/ as shared libraries
2001 under VC++ build system.
2004 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2005 Hopefully, we will not see any false combination of paths any more.
2008 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2010 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2011 (part of SSL_OP_ALL). This option used to disable the
2012 countermeasure against man-in-the-middle protocol-version
2013 rollback in the SSL 2.0 server implementation, which is a bad
2014 idea. (CVE-2005-2969)
2016 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2017 for Information Security, National Institute of Advanced Industrial
2018 Science and Technology [AIST], Japan)]
2020 *) Add two function to clear and return the verify parameter flags.
2023 *) Keep cipherlists sorted in the source instead of sorting them at
2024 runtime, thus removing the need for a lock.
2027 *) Avoid some small subgroup attacks in Diffie-Hellman.
2028 [Nick Mathewson and Ben Laurie]
2030 *) Add functions for well-known primes.
2033 *) Extended Windows CE support.
2034 [Satoshi Nakamura and Andy Polyakov]
2036 *) Initialize SSL_METHOD structures at compile time instead of during
2037 runtime, thus removing the need for a lock.
2040 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2041 attempting to decrypt each encrypted key in turn. Add support to
2045 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2047 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2050 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2053 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2054 key into the same file any more.
2057 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2060 *) Add -utf8 command line and config file option to 'ca'.
2061 [Stefan <stf@udoma.org]
2063 *) Removed the macro des_crypt(), as it seems to conflict with some
2064 libraries. Use DES_crypt().
2067 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2068 involves renaming the source and generated shared-libs for
2069 both. The engines will accept the corrected or legacy ids
2070 ('ncipher' and '4758_cca' respectively) when binding. NB,
2071 this only applies when building 'shared'.
2072 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2074 *) Add attribute functions to EVP_PKEY structure. Modify
2075 PKCS12_create() to recognize a CSP name attribute and
2076 use it. Make -CSP option work again in pkcs12 utility.
2079 *) Add new functionality to the bn blinding code:
2080 - automatic re-creation of the BN_BLINDING parameters after
2081 a fixed number of uses (currently 32)
2082 - add new function for parameter creation
2083 - introduce flags to control the update behaviour of the
2084 BN_BLINDING parameters
2085 - hide BN_BLINDING structure
2086 Add a second BN_BLINDING slot to the RSA structure to improve
2087 performance when a single RSA object is shared among several
2091 *) Add support for DTLS.
2092 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2094 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2095 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2098 *) Remove buggy and incompletet DH cert support from
2099 ssl/ssl_rsa.c and ssl/s3_both.c
2102 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2103 the apps/openssl applications.
2106 *) Compile clean with "-Wall -Wmissing-prototypes
2107 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2108 DEBUG_SAFESTACK must also be set.
2111 *) Change ./Configure so that certain algorithms can be disabled by default.
2112 The new counterpiece to "no-xxx" is "enable-xxx".
2114 The patented RC5 and MDC2 algorithms will now be disabled unless
2115 "enable-rc5" and "enable-mdc2", respectively, are specified.
2117 (IDEA remains enabled despite being patented. This is because IDEA
2118 is frequently required for interoperability, and there is no license
2119 fee for non-commercial use. As before, "no-idea" can be used to
2120 avoid this algorithm.)
2124 *) Add processing of proxy certificates (see RFC 3820). This work was
2125 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2126 EGEE (Enabling Grids for E-science in Europe).
2129 *) RC4 performance overhaul on modern architectures/implementations, such
2130 as Intel P4, IA-64 and AMD64.
2133 *) New utility extract-section.pl. This can be used specify an alternative
2134 section number in a pod file instead of having to treat each file as
2135 a separate case in Makefile. This can be done by adding two lines to the
2138 =for comment openssl_section:XXX
2140 The blank line is mandatory.
2144 *) New arguments -certform, -keyform and -pass for s_client and s_server
2145 to allow alternative format key and certificate files and passphrase
2149 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2150 update associated structures and add various utility functions.
2152 Add new policy related verify parameters, include policy checking in
2153 standard verify code. Enhance 'smime' application with extra parameters
2154 to support policy checking and print out.
2157 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2158 Nehemiah processors. These extensions support AES encryption in hardware
2159 as well as RNG (though RNG support is currently disabled).
2160 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2162 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2165 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2166 [Andy Polyakov and a number of other people]
2168 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2169 implementation contributed by IBM.
2170 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2172 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2173 exponent rather than 'unsigned long'. There is a corresponding change to
2174 the new 'rsa_keygen' element of the RSA_METHOD structure.
2175 [Jelte Jansen, Geoff Thorpe]
2177 *) Functionality for creating the initial serial number file is now
2178 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2180 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2181 number file to 1, which is bound to cause problems. To avoid
2182 the problems while respecting compatibility between different 0.9.7
2183 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2184 CA.pl for serial number initialization. With the new release 0.9.8,
2185 we can fix the problem directly in the 'ca' utility.)
2188 *) Reduced header interdepencies by declaring more opaque objects in
2189 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2190 give fewer recursive includes, which could break lazy source code - so
2191 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2192 developers should define this symbol when building and using openssl to
2193 ensure they track the recommended behaviour, interfaces, [etc], but
2194 backwards-compatible behaviour prevails when this isn't defined.
2197 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2200 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2201 This will generate a random key of the appropriate length based on the
2202 cipher context. The EVP_CIPHER can provide its own random key generation
2203 routine to support keys of a specific form. This is used in the des and
2204 3des routines to generate a key of the correct parity. Update S/MIME
2205 code to use new functions and hence generate correct parity DES keys.
2206 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2207 valid (weak or incorrect parity).
2210 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2211 as looking them up. This is useful when the verified structure may contain
2212 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2213 present unless the new PKCS7_NO_CRL flag is asserted.
2216 *) Extend ASN1 oid configuration module. It now additionally accepts the
2219 shortName = some long name, 1.2.3.4
2222 *) Reimplemented the BN_CTX implementation. There is now no more static
2223 limitation on the number of variables it can handle nor the depth of the
2224 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2225 information can now expand as required, and rather than having a single
2226 static array of bignums, BN_CTX now uses a linked-list of such arrays
2227 allowing it to expand on demand whilst maintaining the usefulness of
2228 BN_CTX's "bundling".
2231 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2232 to allow all RSA operations to function using a single BN_CTX.
2235 *) Preliminary support for certificate policy evaluation and checking. This
2236 is initially intended to pass the tests outlined in "Conformance Testing
2237 of Relying Party Client Certificate Path Processing Logic" v1.07.
2240 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2241 remained unused and not that useful. A variety of other little bignum
2242 tweaks and fixes have also been made continuing on from the audit (see
2246 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2247 associated ASN1, EVP and SSL functions and old ASN1 macros.
2250 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2251 and this should never fail. So the return value from the use of
2252 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2253 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2256 *) BN_CTX_get() should return zero-valued bignums, providing the same
2257 initialised value as BN_new().
2258 [Geoff Thorpe, suggested by Ulf Möller]
2260 *) Support for inhibitAnyPolicy certificate extension.
2263 *) An audit of the BIGNUM code is underway, for which debugging code is
2264 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2265 is considered valid when processing BIGNUMs, and causes execution to
2266 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2267 further steps are taken to deliberately pollute unused data in BIGNUM
2268 structures to try and expose faulty code further on. For now, openssl will
2269 (in its default mode of operation) continue to tolerate the inconsistent
2270 forms that it has tolerated in the past, but authors and packagers should
2271 consider trying openssl and their own applications when compiled with
2272 these debugging symbols defined. It will help highlight potential bugs in
2273 their own code, and will improve the test coverage for OpenSSL itself. At
2274 some point, these tighter rules will become openssl's default to improve
2275 maintainability, though the assert()s and other overheads will remain only
2276 in debugging configurations. See bn.h for more details.
2277 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2279 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2280 that can only be obtained through BN_CTX_new() (which implicitly
2281 initialises it). The presence of this function only made it possible
2282 to overwrite an existing structure (and cause memory leaks).
2285 *) Because of the callback-based approach for implementing LHASH as a
2286 template type, lh_insert() adds opaque objects to hash-tables and
2287 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2288 to clean up those corresponding objects before destroying the hash table
2289 (and losing the object pointers). So some over-zealous constifications in
2290 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2291 objects as "const" and the lh_doall[_arg] callback wrappers are not
2292 prototyped to have "const" restrictions on the object pointers they are
2293 given (and so aren't required to cast them away any more).
2296 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2297 (speed) prefers to use its own implementation. The two implementations
2298 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2299 its object type properly exposed (MS_TM) instead of casting to/from "char
2300 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2301 aren't necessarily the greatest nomenclatures - but this is what was used
2302 internally to the implementation so I've used that for now.
2305 *) Ensure that deprecated functions do not get compiled when
2306 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2307 the self-tests were still using deprecated key-generation functions so
2308 these have been updated also.
2311 *) Reorganise PKCS#7 code to separate the digest location functionality
2312 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2313 New function PKCS7_set_digest() to set the digest type for PKCS#7
2314 digestedData type. Add additional code to correctly generate the
2315 digestedData type and add support for this type in PKCS7 initialization
2319 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2320 structure of type "other".
2323 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2324 sure the loop does correctly stop and breaking ("division by zero")
2325 modulus operations are not performed. The (pre-generated) prime
2326 table crypto/bn/bn_prime.h was already correct, but it could not be
2327 re-generated on some platforms because of the "division by zero"
2328 situation in the script.
2329 [Ralf S. Engelschall]
2331 *) Update support for ECC-based TLS ciphersuites according to
2332 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2333 SHA-1 now is only used for "small" curves (where the
2334 representation of a field element takes up to 24 bytes); for
2335 larger curves, the field element resulting from ECDH is directly
2336 used as premaster secret.
2337 [Douglas Stebila (Sun Microsystems Laboratories)]
2339 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2340 curve secp160r1 to the tests.
2341 [Douglas Stebila (Sun Microsystems Laboratories)]
2343 *) Add the possibility to load symbols globally with DSO.
2344 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2346 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2347 control of the error stack.
2350 *) Add support for STORE in ENGINE.
2353 *) Add the STORE type. The intention is to provide a common interface
2354 to certificate and key stores, be they simple file-based stores, or
2355 HSM-type store, or LDAP stores, or...
2356 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2359 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2360 pass a list of arguments to any function as well as provide a way
2361 for a function to pass data back to the caller.
2364 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2365 works like BUF_strdup() but can be used to duplicate a portion of
2366 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2370 *) Add the function sk_find_ex() which works like sk_find(), but will
2371 return an index to an element even if an exact match couldn't be
2372 found. The index is guaranteed to point at the element where the
2373 searched-for key would be inserted to preserve sorting order.
2376 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2377 takes an extra flags argument for optional functionality. Currently,
2378 the following flags are defined:
2380 OBJ_BSEARCH_VALUE_ON_NOMATCH
2381 This one gets OBJ_bsearch_ex() to return a pointer to the first
2382 element where the comparing function returns a negative or zero
2385 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2386 This one gets OBJ_bsearch_ex() to return a pointer to the first
2387 element where the comparing function returns zero. This is useful
2388 if there are more than one element where the comparing function
2392 *) Make it possible to create self-signed certificates with 'openssl ca'
2393 in such a way that the self-signed certificate becomes part of the
2394 CA database and uses the same mechanisms for serial number generation
2395 as all other certificate signing. The new flag '-selfsign' enables
2396 this functionality. Adapt CA.sh and CA.pl.in.
2399 *) Add functionality to check the public key of a certificate request
2400 against a given private. This is useful to check that a certificate
2401 request can be signed by that key (self-signing).
2404 *) Make it possible to have multiple active certificates with the same
2405 subject in the CA index file. This is done only if the keyword
2406 'unique_subject' is set to 'no' in the main CA section (default
2407 if 'CA_default') of the configuration file. The value is saved
2408 with the database itself in a separate index attribute file,
2409 named like the index file with '.attr' appended to the name.
2412 *) Generate muti valued AVAs using '+' notation in config files for
2416 *) Support for nameConstraints certificate extension.
2419 *) Support for policyConstraints certificate extension.
2422 *) Support for policyMappings certificate extension.
2425 *) Make sure the default DSA_METHOD implementation only uses its
2426 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2427 and change its own handlers to be NULL so as to remove unnecessary
2428 indirection. This lets alternative implementations fallback to the
2429 default implementation more easily.
2432 *) Support for directoryName in GeneralName related extensions
2436 *) Make it possible to link applications using Makefile.shared.
2437 Make that possible even when linking against static libraries!
2440 *) Support for single pass processing for S/MIME signing. This now
2441 means that S/MIME signing can be done from a pipe, in addition
2442 cleartext signing (multipart/signed type) is effectively streaming
2443 and the signed data does not need to be all held in memory.
2445 This is done with a new flag PKCS7_STREAM. When this flag is set
2446 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2447 is done after the data is output (and digests calculated) in
2448 SMIME_write_PKCS7().
2451 *) Add full support for -rpath/-R, both in shared libraries and
2452 applications, at least on the platforms where it's known how
2456 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2457 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2458 will now compute a table of multiples of the generator that
2459 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2460 faster (notably in the case of a single point multiplication,
2461 scalar * generator).
2462 [Nils Larsch, Bodo Moeller]
2464 *) IPv6 support for certificate extensions. The various extensions
2465 which use the IP:a.b.c.d can now take IPv6 addresses using the
2466 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2470 *) Added an ENGINE that implements RSA by performing private key
2471 exponentiations with the GMP library. The conversions to and from
2472 GMP's mpz_t format aren't optimised nor are any montgomery forms
2473 cached, and on x86 it appears OpenSSL's own performance has caught up.
2474 However there are likely to be other architectures where GMP could
2475 provide a boost. This ENGINE is not built in by default, but it can be
2476 specified at Configure time and should be accompanied by the necessary
2477 linker additions, eg;
2478 ./config -DOPENSSL_USE_GMP -lgmp
2481 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2482 testing availability of engines with "-t" - the old behaviour is
2483 produced by increasing the feature's verbosity with "-tt".
2486 *) ECDSA routines: under certain error conditions uninitialized BN objects
2487 could be freed. Solution: make sure initialization is performed early
2488 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2492 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2493 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2494 software implementations. For DSA and DH, parameter generation can
2495 also be overriden by providing the appropriate method callbacks.
2498 *) Change the "progress" mechanism used in key-generation and
2499 primality testing to functions that take a new BN_GENCB pointer in
2500 place of callback/argument pairs. The new API functions have "_ex"
2501 postfixes and the older functions are reimplemented as wrappers for
2502 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2503 declarations of the old functions to help (graceful) attempts to
2504 migrate to the new functions. Also, the new key-generation API
2505 functions operate on a caller-supplied key-structure and return
2506 success/failure rather than returning a key or NULL - this is to
2507 help make "keygen" another member function of RSA_METHOD etc.
2509 Example for using the new callback interface:
2511 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2515 BN_GENCB_set(&my_cb, my_callback, my_arg);
2517 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2518 /* For the meaning of a, b in calls to my_callback(), see the
2519 * documentation of the function that calls the callback.
2520 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2521 * my_callback should return 1 if it wants BN_is_prime_ex()
2522 * to continue, or 0 to stop.
2527 *) Change the ZLIB compression method to be stateful, and make it
2528 available to TLS with the number defined in
2529 draft-ietf-tls-compression-04.txt.
2532 *) Add the ASN.1 structures and functions for CertificatePair, which
2533 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2535 CertificatePair ::= SEQUENCE {
2536 forward [0] Certificate OPTIONAL,
2537 reverse [1] Certificate OPTIONAL,
2538 -- at least one of the pair shall be present -- }
2540 Also implement the PEM functions to read and write certificate
2541 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2543 This needed to be defined, mostly for the sake of the LDAP
2544 attribute crossCertificatePair, but may prove useful elsewhere as
2548 *) Make it possible to inhibit symlinking of shared libraries in
2549 Makefile.shared, for Cygwin's sake.
2552 *) Extend the BIGNUM API by creating a function
2553 void BN_set_negative(BIGNUM *a, int neg);
2554 and a macro that behave like
2555 int BN_is_negative(const BIGNUM *a);
2557 to avoid the need to access 'a->neg' directly in applications.
2560 *) Implement fast modular reduction for pseudo-Mersenne primes
2561 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2562 EC_GROUP_new_curve_GFp() will now automatically use this
2564 [Nils Larsch <nla@trustcenter.de>]
2566 *) Add new lock type (CRYPTO_LOCK_BN).
2569 *) Change the ENGINE framework to automatically load engines
2570 dynamically from specific directories unless they could be
2571 found to already be built in or loaded. Move all the
2572 current engines except for the cryptodev one to a new
2574 The engines in engines/ are built as shared libraries if
2575 the "shared" options was given to ./Configure or ./config.
2576 Otherwise, they are inserted in libcrypto.a.
2577 /usr/local/ssl/engines is the default directory for dynamic
2578 engines, but that can be overriden at configure time through
2579 the usual use of --prefix and/or --openssldir, and at run
2580 time with the environment variable OPENSSL_ENGINES.
2581 [Geoff Thorpe and Richard Levitte]
2583 *) Add Makefile.shared, a helper makefile to build shared
2584 libraries. Addapt Makefile.org.
2587 *) Add version info to Win32 DLLs.
2588 [Peter 'Luna' Runestig" <peter@runestig.com>]
2590 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2591 can be added using this API to created arbitrary PKCS#12
2592 files while avoiding the low level API.
2594 New options to PKCS12_create(), key or cert can be NULL and
2595 will then be omitted from the output file. The encryption
2596 algorithm NIDs can be set to -1 for no encryption, the mac
2597 iteration count can be set to 0 to omit the mac.
2599 Enhance pkcs12 utility by making the -nokeys and -nocerts
2600 options work when creating a PKCS#12 file. New option -nomac
2601 to omit the mac, NONE can be set for an encryption algorithm.
2602 New code is modified to use the enhanced PKCS12_create()
2603 instead of the low level API.
2606 *) Extend ASN1 encoder to support indefinite length constructed
2607 encoding. This can output sequences tags and octet strings in
2608 this form. Modify pk7_asn1.c to support indefinite length
2609 encoding. This is experimental and needs additional code to
2610 be useful, such as an ASN1 bio and some enhanced streaming
2613 Extend template encode functionality so that tagging is passed
2614 down to the template encoder.
2617 *) Let 'openssl req' fail if an argument to '-newkey' is not
2618 recognized instead of using RSA as a default.
2621 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2622 As these are not official, they are not included in "ALL";
2623 the "ECCdraft" ciphersuite group alias can be used to select them.
2624 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2626 *) Add ECDH engine support.
2627 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2629 *) Add ECDH in new directory crypto/ecdh/.
2630 [Douglas Stebila (Sun Microsystems Laboratories)]
2632 *) Let BN_rand_range() abort with an error after 100 iterations
2633 without success (which indicates a broken PRNG).
2636 *) Change BN_mod_sqrt() so that it verifies that the input value
2637 is really the square of the return value. (Previously,
2638 BN_mod_sqrt would show GIGO behaviour.)
2641 *) Add named elliptic curves over binary fields from X9.62, SECG,
2642 and WAP/WTLS; add OIDs that were still missing.
2644 [Sheueling Chang Shantz and Douglas Stebila
2645 (Sun Microsystems Laboratories)]
2647 *) Extend the EC library for elliptic curves over binary fields
2648 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2651 EC_GF2m_simple_method
2655 EC_GROUP_new_curve_GF2m
2656 EC_GROUP_set_curve_GF2m
2657 EC_GROUP_get_curve_GF2m
2658 EC_POINT_set_affine_coordinates_GF2m
2659 EC_POINT_get_affine_coordinates_GF2m
2660 EC_POINT_set_compressed_coordinates_GF2m
2662 Point compression for binary fields is disabled by default for
2663 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2666 As binary polynomials are represented as BIGNUMs, various members
2667 of the EC_GROUP and EC_POINT data structures can be shared
2668 between the implementations for prime fields and binary fields;
2669 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2670 are essentially identical to their ..._GFp counterparts.
2671 (For simplicity, the '..._GFp' prefix has been dropped from
2672 various internal method names.)
2674 An internal 'field_div' method (similar to 'field_mul' and
2675 'field_sqr') has been added; this is used only for binary fields.
2677 [Sheueling Chang Shantz and Douglas Stebila
2678 (Sun Microsystems Laboratories)]
2680 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2681 through methods ('mul', 'precompute_mult').
2683 The generic implementations (now internally called 'ec_wNAF_mul'
2684 and 'ec_wNAF_precomputed_mult') remain the default if these
2685 methods are undefined.
2687 [Sheueling Chang Shantz and Douglas Stebila
2688 (Sun Microsystems Laboratories)]
2690 *) New function EC_GROUP_get_degree, which is defined through
2691 EC_METHOD. For curves over prime fields, this returns the bit
2692 length of the modulus.
2694 [Sheueling Chang Shantz and Douglas Stebila
2695 (Sun Microsystems Laboratories)]
2697 *) New functions EC_GROUP_dup, EC_POINT_dup.
2698 (These simply call ..._new and ..._copy).
2700 [Sheueling Chang Shantz and Douglas Stebila
2701 (Sun Microsystems Laboratories)]
2703 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2704 Polynomials are represented as BIGNUMs (where the sign bit is not
2705 used) in the following functions [macros]:
2708 BN_GF2m_sub [= BN_GF2m_add]
2709 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2710 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2711 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2713 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2714 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2715 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2716 BN_GF2m_cmp [= BN_ucmp]
2718 (Note that only the 'mod' functions are actually for fields GF(2^m).
2719 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2721 For some functions, an the irreducible polynomial defining a
2722 field can be given as an 'unsigned int[]' with strictly
2723 decreasing elements giving the indices of those bits that are set;
2724 i.e., p[] represents the polynomial
2725 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2727 p[0] > p[1] > ... > p[k] = 0.
2728 This applies to the following functions:
2733 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2734 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2736 BN_GF2m_mod_sqrt_arr
2737 BN_GF2m_mod_solve_quad_arr
2741 Conversion can be performed by the following functions:
2746 bntest.c has additional tests for binary polynomial arithmetic.
2748 Two implementations for BN_GF2m_mod_div() are available.
2749 The default algorithm simply uses BN_GF2m_mod_inv() and
2750 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2751 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2752 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2754 [Sheueling Chang Shantz and Douglas Stebila
2755 (Sun Microsystems Laboratories)]
2757 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2758 functionality is disabled at compile-time.
2759 [Douglas Stebila <douglas.stebila@sun.com>]
2761 *) Change default behaviour of 'openssl asn1parse' so that more
2762 information is visible when viewing, e.g., a certificate:
2764 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2765 mode the content of non-printable OCTET STRINGs is output in a
2766 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2767 avoid the appearance of a printable string.
2768 [Nils Larsch <nla@trustcenter.de>]
2770 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2772 EC_GROUP_set_asn1_flag()
2773 EC_GROUP_get_asn1_flag()
2774 EC_GROUP_set_point_conversion_form()
2775 EC_GROUP_get_point_conversion_form()
2776 These control ASN1 encoding details:
2777 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2778 has been set to OPENSSL_EC_NAMED_CURVE.
2779 - Points are encoded in uncompressed form by default; options for
2780 asn1_for are as for point2oct, namely
2781 POINT_CONVERSION_COMPRESSED
2782 POINT_CONVERSION_UNCOMPRESSED
2783 POINT_CONVERSION_HYBRID
2785 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2788 EC_GROUP_get0_seed()
2789 EC_GROUP_get_seed_len()
2790 This is used only for ASN1 purposes (so far).
2791 [Nils Larsch <nla@trustcenter.de>]
2793 *) Add 'field_type' member to EC_METHOD, which holds the NID
2794 of the appropriate field type OID. The new function
2795 EC_METHOD_get_field_type() returns this value.
2796 [Nils Larsch <nla@trustcenter.de>]
2801 EC_POINT_point2hex()
2802 EC_POINT_hex2point()
2803 providing useful interfaces to EC_POINT_point2oct() and
2804 EC_POINT_oct2point().
2805 [Nils Larsch <nla@trustcenter.de>]
2807 *) Change internals of the EC library so that the functions
2808 EC_GROUP_set_generator()
2809 EC_GROUP_get_generator()
2810 EC_GROUP_get_order()
2811 EC_GROUP_get_cofactor()
2812 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2813 to methods, which would lead to unnecessary code duplication when
2814 adding different types of curves.
2815 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2817 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2818 arithmetic, and such that modified wNAFs are generated
2819 (which avoid length expansion in many cases).
2822 *) Add a function EC_GROUP_check_discriminant() (defined via
2823 EC_METHOD) that verifies that the curve discriminant is non-zero.
2825 Add a function EC_GROUP_check() that makes some sanity tests
2826 on a EC_GROUP, its generator and order. This includes
2827 EC_GROUP_check_discriminant().
2828 [Nils Larsch <nla@trustcenter.de>]
2830 *) Add ECDSA in new directory crypto/ecdsa/.
2832 Add applications 'openssl ecparam' and 'openssl ecdsa'
2833 (these are based on 'openssl dsaparam' and 'openssl dsa').
2835 ECDSA support is also included in various other files across the
2836 library. Most notably,
2837 - 'openssl req' now has a '-newkey ecdsa:file' option;
2838 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2839 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2840 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2841 them suitable for ECDSA where domain parameters must be
2842 extracted before the specific public key;
2843 - ECDSA engine support has been added.
2844 [Nils Larsch <nla@trustcenter.de>]
2846 *) Include some named elliptic curves, and add OIDs from X9.62,
2847 SECG, and WAP/WTLS. Each curve can be obtained from the new
2849 EC_GROUP_new_by_curve_name(),
2850 and the list of available named curves can be obtained with
2851 EC_get_builtin_curves().
2852 Also add a 'curve_name' member to EC_GROUP objects, which can be
2854 EC_GROUP_set_curve_name()
2855 EC_GROUP_get_curve_name()
2856 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2858 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2859 was actually never needed) and in BN_mul(). The removal in BN_mul()
2860 required a small change in bn_mul_part_recursive() and the addition
2861 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2862 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2863 bn_sub_words() and bn_add_words() except they take arrays with
2867 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2869 *) Cleanse PEM buffers before freeing them since they may contain
2871 [Benjamin Bennett <ben@psc.edu>]
2873 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2874 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2875 authentication-only ciphersuites.
2878 *) Since AES128 and AES256 share a single mask bit in the logic of
2879 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2880 kludge to work properly if AES128 is available and AES256 isn't.
2883 *) Expand security boundary to match 1.1.1 module.
2886 *) Remove redundant features: hash file source, editing of test vectors
2887 modify fipsld to use external fips_premain.c signature.
2890 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2891 run algorithm test programs.
2894 *) Make algorithm test programs more tolerant of whitespace.
2897 *) Have SSL/TLS server implementation tolerate "mismatched" record
2898 protocol version while receiving ClientHello even if the
2899 ClientHello is fragmented. (The server can't insist on the
2900 particular protocol version it has chosen before the ServerHello
2901 message has informed the client about his choice.)
2904 *) Load error codes if they are not already present instead of using a
2905 static variable. This allows them to be cleanly unloaded and reloaded.
2908 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2910 *) Introduce limits to prevent malicious keys being able to
2911 cause a denial of service. (CVE-2006-2940)
2912 [Steve Henson, Bodo Moeller]
2914 *) Fix ASN.1 parsing of certain invalid structures that can result
2915 in a denial of service. (CVE-2006-2937) [Steve Henson]
2917 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2918 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2920 *) Fix SSL client code which could crash if connecting to a
2921 malicious SSLv2 server. (CVE-2006-4343)
2922 [Tavis Ormandy and Will Drewry, Google Security Team]
2924 *) Change ciphersuite string processing so that an explicit
2925 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2926 will no longer include "AES128-SHA"), and any other similar
2927 ciphersuite (same bitmap) from *other* protocol versions (so that
2928 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2929 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2930 changes from 0.9.8b and 0.9.8d.
2933 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2935 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2936 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2938 *) Change the Unix randomness entropy gathering to use poll() when
2939 possible instead of select(), since the latter has some
2940 undesirable limitations.
2941 [Darryl Miles via Richard Levitte and Bodo Moeller]
2943 *) Disable rogue ciphersuites:
2945 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2946 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2947 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2949 The latter two were purportedly from
2950 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2953 Also deactive the remaining ciphersuites from
2954 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2955 unofficial, and the ID has long expired.
2958 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2959 dual-core machines) and other potential thread-safety issues.
2962 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2964 *) Adapt fipsld and the build system to link against the validated FIPS
2965 module in FIPS mode.
2968 *) Fixes for VC++ 2005 build under Windows.
2971 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2972 from a Windows bash shell such as MSYS. It is autodetected from the
2973 "config" script when run from a VC++ environment. Modify standard VC++
2974 build to use fipscanister.o from the GNU make build.
2977 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2979 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2980 The value now differs depending on if you build for FIPS or not.
2981 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2982 safely run with a non-FIPSed libcrypto, as it may crash because of
2983 the difference induced by this change.
2986 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2988 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2989 (part of SSL_OP_ALL). This option used to disable the
2990 countermeasure against man-in-the-middle protocol-version
2991 rollback in the SSL 2.0 server implementation, which is a bad
2992 idea. (CVE-2005-2969)
2994 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2995 for Information Security, National Institute of Advanced Industrial
2996 Science and Technology [AIST], Japan)]
2998 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2999 mainly for FIPS compliance and not fully integrated at this stage.
3002 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3003 the exponentiation using a fixed-length exponent. (Otherwise,
3004 the information leaked through timing could expose the secret key
3005 after many signatures; cf. Bleichenbacher's attack on DSA with
3009 *) Make a new fixed-window mod_exp implementation the default for
3010 RSA, DSA, and DH private-key operations so that the sequence of
3011 squares and multiplies and the memory access pattern are
3012 independent of the particular secret key. This will mitigate
3013 cache-timing and potential related attacks.
3015 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3016 and this is automatically used by BN_mod_exp_mont() if the new flag
3017 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3018 will use this BN flag for private exponents unless the flag
3019 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3020 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3022 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3024 *) Change the client implementation for SSLv23_method() and
3025 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3026 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3027 (Previously, the SSL 2.0 backwards compatible Client Hello
3028 message format would be used even with SSL_OP_NO_SSLv2.)
3031 *) Add support for smime-type MIME parameter in S/MIME messages which some
3035 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3036 a threadsafe manner. Modify rsa code to use new function and add calls
3037 to dsa and dh code (which had race conditions before).
3040 *) Include the fixed error library code in the C error file definitions
3041 instead of fixing them up at runtime. This keeps the error code
3042 structures constant.
3045 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3047 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3050 *) Fixes for newer kerberos headers. NB: the casts are needed because
3051 the 'length' field is signed on one version and unsigned on another
3052 with no (?) obvious way to tell the difference, without these VC++
3053 complains. Also the "definition" of FAR (blank) is no longer included
3054 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3055 some needed definitions.
3058 *) Undo Cygwin change.
3061 *) Added support for proxy certificates according to RFC 3820.
3062 Because they may be a security thread to unaware applications,
3063 they must be explicitely allowed in run-time. See
3064 docs/HOWTO/proxy_certificates.txt for further information.
3067 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3069 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3070 server and client random values. Previously
3071 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3072 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3074 This change has negligible security impact because:
3076 1. Server and client random values still have 24 bytes of pseudo random
3079 2. Server and client random values are sent in the clear in the initial
3082 3. The master secret is derived using the premaster secret (48 bytes in
3083 size for static RSA ciphersuites) as well as client server and random
3086 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3089 [Stephen Henson, reported by UK NISCC]
3091 *) Use Windows randomness collection on Cygwin.
3094 *) Fix hang in EGD/PRNGD query when communication socket is closed
3095 prematurely by EGD/PRNGD.
3096 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3098 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3101 *) Back-port of selected performance improvements from development
3102 branch, as well as improved support for PowerPC platforms.
3105 *) Add lots of checks for memory allocation failure, error codes to indicate
3106 failure and freeing up memory if a failure occurs.
3107 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3109 *) Add new -passin argument to dgst.
3112 *) Perform some character comparisons of different types in X509_NAME_cmp:
3113 this is needed for some certificates that reencode DNs into UTF8Strings
3114 (in violation of RFC3280) and can't or wont issue name rollover
3118 *) Make an explicit check during certificate validation to see that
3119 the CA setting in each certificate on the chain is correct. As a
3120 side effect always do the following basic checks on extensions,
3121 not just when there's an associated purpose to the check:
3123 - if there is an unhandled critical extension (unless the user
3124 has chosen to ignore this fault)
3125 - if the path length has been exceeded (if one is set at all)
3126 - that certain extensions fit the associated purpose (if one has
3130 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3132 *) Avoid a race condition when CRLs are checked in a multi threaded
3133 environment. This would happen due to the reordering of the revoked
3134 entries during signature checking and serial number lookup. Now the
3135 encoding is cached and the serial number sort performed under a lock.
3136 Add new STACK function sk_is_sorted().
3139 *) Add Delta CRL to the extension code.
3142 *) Various fixes to s3_pkt.c so alerts are sent properly.
3143 [David Holmes <d.holmes@f5.com>]
3145 *) Reduce the chances of duplicate issuer name and serial numbers (in
3146 violation of RFC3280) using the OpenSSL certificate creation utilities.
3147 This is done by creating a random 64 bit value for the initial serial
3148 number when a serial number file is created or when a self signed
3149 certificate is created using 'openssl req -x509'. The initial serial
3150 number file is created using 'openssl x509 -next_serial' in CA.pl
3151 rather than being initialized to 1.
3154 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3156 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3157 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3158 [Joe Orton, Steve Henson]
3160 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3162 [Joe Orton, Steve Henson]
3164 *) Make it possible to have multiple active certificates with the same
3165 subject in the CA index file. This is done only if the keyword
3166 'unique_subject' is set to 'no' in the main CA section (default
3167 if 'CA_default') of the configuration file. The value is saved
3168 with the database itself in a separate index attribute file,
3169 named like the index file with '.attr' appended to the name.
3172 *) X509 verify fixes. Disable broken certificate workarounds when
3173 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3174 keyUsage extension present. Don't accept CRLs with unhandled critical
3175 extensions: since verify currently doesn't process CRL extensions this
3176 rejects a CRL with *any* critical extensions. Add new verify error codes
3180 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3181 A clarification of RFC2560 will require the use of OCTET STRINGs and
3182 some implementations cannot handle the current raw format. Since OpenSSL
3183 copies and compares OCSP nonces as opaque blobs without any attempt at
3184 parsing them this should not create any compatibility issues.
3187 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3188 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3189 this HMAC (and other) operations are several times slower than OpenSSL
3193 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3194 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3196 *) Use the correct content when signing type "other".
3199 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3201 *) Fix various bugs revealed by running the NISCC test suite:
3203 Stop out of bounds reads in the ASN1 code when presented with
3204 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3206 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3208 If verify callback ignores invalid public key errors don't try to check
3209 certificate signature with the NULL public key.
3213 *) New -ignore_err option in ocsp application to stop the server
3214 exiting on the first error in a request.
3217 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3218 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3222 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3223 extra data after the compression methods not only for TLS 1.0
3224 but also for SSL 3.0 (as required by the specification).
3225 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3227 *) Change X509_certificate_type() to mark the key as exported/exportable
3228 when it's 512 *bits* long, not 512 bytes.
3231 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3232 blocks during encryption.
3235 *) Various fixes to base64 BIO and non blocking I/O. On write
3236 flushes were not handled properly if the BIO retried. On read
3237 data was not being buffered properly and had various logic bugs.
3238 This also affects blocking I/O when the data being decoded is a
3242 *) Various S/MIME bugfixes and compatibility changes:
3243 output correct application/pkcs7 MIME type if
3244 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3245 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3246 of files as .eml work). Correctly handle very long lines in MIME
3250 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3252 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3253 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3254 a protocol version number mismatch like a decryption error
3255 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3258 *) Turn on RSA blinding by default in the default implementation
3259 to avoid a timing attack. Applications that don't want it can call
3260 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3261 They would be ill-advised to do so in most cases.
3262 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3264 *) Change RSA blinding code so that it works when the PRNG is not
3265 seeded (in this case, the secret RSA exponent is abused as
3266 an unpredictable seed -- if it is not unpredictable, there
3267 is no point in blinding anyway). Make RSA blinding thread-safe
3268 by remembering the creator's thread ID in rsa->blinding and
3269 having all other threads use local one-time blinding factors
3270 (this requires more computation than sharing rsa->blinding, but
3271 avoids excessive locking; and if an RSA object is not shared
3272 between threads, blinding will still be very fast).
3275 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3276 ENGINE as defaults for all supported algorithms irrespective of
3277 the 'flags' parameter. 'flags' is now honoured, so applications
3278 should make sure they are passing it correctly.
3281 *) Target "mingw" now allows native Windows code to be generated in
3282 the Cygwin environment as well as with the MinGW compiler.
3285 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3287 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3288 via timing by performing a MAC computation even if incorrrect
3289 block cipher padding has been found. This is a countermeasure
3290 against active attacks where the attacker has to distinguish
3291 between bad padding and a MAC verification error. (CVE-2003-0078)
3293 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3294 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3295 Martin Vuagnoux (EPFL, Ilion)]
3297 *) Make the no-err option work as intended. The intention with no-err
3298 is not to have the whole error stack handling routines removed from
3299 libcrypto, it's only intended to remove all the function name and
3300 reason texts, thereby removing some of the footprint that may not
3301 be interesting if those errors aren't displayed anyway.
3303 NOTE: it's still possible for any application or module to have it's
3304 own set of error texts inserted. The routines are there, just not
3305 used by default when no-err is given.
3308 *) Add support for FreeBSD on IA64.
3309 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3311 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3312 Kerberos function mit_des_cbc_cksum(). Before this change,
3313 the value returned by DES_cbc_cksum() was like the one from
3314 mit_des_cbc_cksum(), except the bytes were swapped.
3315 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3317 *) Allow an application to disable the automatic SSL chain building.
3318 Before this a rather primitive chain build was always performed in
3319 ssl3_output_cert_chain(): an application had no way to send the
3320 correct chain if the automatic operation produced an incorrect result.
3322 Now the chain builder is disabled if either:
3324 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3326 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3328 The reasoning behind this is that an application would not want the
3329 auto chain building to take place if extra chain certificates are
3330 present and it might also want a means of sending no additional
3331 certificates (for example the chain has two certificates and the
3335 *) Add the possibility to build without the ENGINE framework.
3336 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3338 *) Under Win32 gmtime() can return NULL: check return value in
3339 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3342 *) DSA routines: under certain error conditions uninitialized BN objects
3343 could be freed. Solution: make sure initialization is performed early
3344 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3345 Nils Larsch <nla@trustcenter.de> via PR#459)
3348 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3349 checked on reconnect on the client side, therefore session resumption
3350 could still fail with a "ssl session id is different" error. This
3351 behaviour is masked when SSL_OP_ALL is used due to
3352 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3353 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3354 followup to PR #377.
3357 *) IA-32 assembler support enhancements: unified ELF targets, support
3358 for SCO/Caldera platforms, fix for Cygwin shared build.
3361 *) Add support for FreeBSD on sparc64. As a consequence, support for
3362 FreeBSD on non-x86 processors is separate from x86 processors on
3363 the config script, much like the NetBSD support.
3364 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3366 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3368 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3371 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3372 code (06) was taken as the first octet of the session ID and the last
3373 octet was ignored consequently. As a result SSLv2 client side session
3374 caching could not have worked due to the session ID mismatch between
3376 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3380 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3381 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3385 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3386 seems that in spite of existing for more than a year, many application
3387 author have done nothing to provide the necessary callbacks, which
3388 means that this particular engine will not work properly anywhere.
3389 This is a very unfortunate situation which forces us, in the name
3390 of usability, to give the hw_ncipher.c a static lock, which is part
3392 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3393 appear in 0.9.8 or later. We EXPECT application authors to have
3394 dealt properly with this when 0.9.8 is released (unless we actually
3395 make such changes in the libcrypto locking code that changes will
3396 have to be made anyway).
3399 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3400 octets have been read, EOF or an error occurs. Without this change
3401 some truncated ASN1 structures will not produce an error.
3404 *) Disable Heimdal support, since it hasn't been fully implemented.
3405 Still give the possibility to force the use of Heimdal, but with
3406 warnings and a request that patches get sent to openssl-dev.
3409 *) Add the VC-CE target, introduce the WINCE sysname, and add
3410 INSTALL.WCE and appropriate conditionals to make it build.
3411 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3413 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3414 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3415 edit numbers of the version.
3416 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3418 *) Introduce safe string copy and catenation functions
3419 (BUF_strlcpy() and BUF_strlcat()).
3420 [Ben Laurie (CHATS) and Richard Levitte]
3422 *) Avoid using fixed-size buffers for one-line DNs.
3423 [Ben Laurie (CHATS)]
3425 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3426 resizing buffers containing secrets, and use where appropriate.
3427 [Ben Laurie (CHATS)]
3429 *) Avoid using fixed size buffers for configuration file location.
3430 [Ben Laurie (CHATS)]
3432 *) Avoid filename truncation for various CA files.
3433 [Ben Laurie (CHATS)]
3435 *) Use sizeof in preference to magic numbers.
3436 [Ben Laurie (CHATS)]
3438 *) Avoid filename truncation in cert requests.
3439 [Ben Laurie (CHATS)]
3441 *) Add assertions to check for (supposedly impossible) buffer
3443 [Ben Laurie (CHATS)]
3445 *) Don't cache truncated DNS entries in the local cache (this could
3446 potentially lead to a spoofing attack).
3447 [Ben Laurie (CHATS)]
3449 *) Fix various buffers to be large enough for hex/decimal
3450 representations in a platform independent manner.
3451 [Ben Laurie (CHATS)]
3453 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3454 resizing buffers containing secrets, and use where appropriate.
3455 [Ben Laurie (CHATS)]
3457 *) Add BIO_indent() to avoid much slightly worrying code to do
3459 [Ben Laurie (CHATS)]
3461 *) Convert sprintf()/BIO_puts() to BIO_printf().
3462 [Ben Laurie (CHATS)]
3464 *) buffer_gets() could terminate with the buffer only half
3466 [Ben Laurie (CHATS)]
3468 *) Add assertions to prevent user-supplied crypto functions from
3469 overflowing internal buffers by having large block sizes, etc.
3470 [Ben Laurie (CHATS)]
3472 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3474 [Ben Laurie (CHATS)]
3476 *) Eliminate unused copy of key in RC4.
3477 [Ben Laurie (CHATS)]
3479 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3480 [Ben Laurie (CHATS)]
3482 *) Fix off-by-one error in EGD path.
3483 [Ben Laurie (CHATS)]
3485 *) If RANDFILE path is too long, ignore instead of truncating.
3486 [Ben Laurie (CHATS)]
3488 *) Eliminate unused and incorrectly sized X.509 structure
3490 [Ben Laurie (CHATS)]
3492 *) Eliminate unused and dangerous function knumber().
3493 [Ben Laurie (CHATS)]
3495 *) Eliminate unused and dangerous structure, KSSL_ERR.
3496 [Ben Laurie (CHATS)]
3498 *) Protect against overlong session ID context length in an encoded
3499 session object. Since these are local, this does not appear to be
3501 [Ben Laurie (CHATS)]
3503 *) Change from security patch (see 0.9.6e below) that did not affect
3504 the 0.9.6 release series:
3506 Remote buffer overflow in SSL3 protocol - an attacker could
3507 supply an oversized master key in Kerberos-enabled versions.
3509 [Ben Laurie (CHATS)]
3511 *) Change the SSL kerb5 codes to match RFC 2712.
3514 *) Make -nameopt work fully for req and add -reqopt switch.
3515 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3517 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3518 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3520 *) Make sure tests can be performed even if the corresponding algorithms
3521 have been removed entirely. This was also the last step to make
3522 OpenSSL compilable with DJGPP under all reasonable conditions.
3523 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3525 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3526 to allow version independent disabling of normally unselected ciphers,
3527 which may be activated as a side-effect of selecting a single cipher.
3529 (E.g., cipher list string "RSA" enables ciphersuites that are left
3530 out of "ALL" because they do not provide symmetric encryption.
3531 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3532 [Lutz Jaenicke, Bodo Moeller]
3534 *) Add appropriate support for separate platform-dependent build
3535 directories. The recommended way to make a platform-dependent
3536 build directory is the following (tested on Linux), maybe with
3539 # Place yourself outside of the OpenSSL source tree. In
3540 # this example, the environment variable OPENSSL_SOURCE
3541 # is assumed to contain the absolute OpenSSL source directory.
3542 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3543 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3544 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3545 mkdir -p `dirname $F`
3546 ln -s $OPENSSL_SOURCE/$F $F
3549 To be absolutely sure not to disturb the source tree, a "make clean"
3550 is a good thing. If it isn't successfull, don't worry about it,
3551 it probably means the source directory is very clean.
3554 *) Make sure any ENGINE control commands make local copies of string
3555 pointers passed to them whenever necessary. Otherwise it is possible
3556 the caller may have overwritten (or deallocated) the original string
3557 data when a later ENGINE operation tries to use the stored values.
3558 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3560 *) Improve diagnostics in file reading and command-line digests.
3561 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3563 *) Add AES modes CFB and OFB to the object database. Correct an
3564 error in AES-CFB decryption.
3567 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3568 allows existing EVP_CIPHER_CTX structures to be reused after
3569 calling EVP_*Final(). This behaviour is used by encryption
3570 BIOs and some applications. This has the side effect that
3571 applications must explicitly clean up cipher contexts with
3572 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3575 *) Check the values of dna and dnb in bn_mul_recursive before calling
3576 bn_mul_comba (a non zero value means the a or b arrays do not contain
3577 n2 elements) and fallback to bn_mul_normal if either is not zero.
3580 *) Fix escaping of non-ASCII characters when using the -subj option
3581 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3584 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3585 form for "surname", serialNumber has no short form.
3586 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3587 therefore remove "mail" short name for "internet 7".
3588 The OID for unique identifiers in X509 certificates is
3589 x500UniqueIdentifier, not uniqueIdentifier.
3590 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3593 *) Add an "init" command to the ENGINE config module and auto initialize
3594 ENGINEs. Without any "init" command the ENGINE will be initialized
3595 after all ctrl commands have been executed on it. If init=1 the
3596 ENGINE is initailized at that point (ctrls before that point are run
3597 on the uninitialized ENGINE and after on the initialized one). If
3598 init=0 then the ENGINE will not be iniatialized at all.
3601 *) Fix the 'app_verify_callback' interface so that the user-defined
3602 argument is actually passed to the callback: In the
3603 SSL_CTX_set_cert_verify_callback() prototype, the callback
3604 declaration has been changed from
3607 int (*cb)(X509_STORE_CTX *,void *);
3608 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3609 i=s->ctx->app_verify_callback(&ctx)
3610 has been changed into
3611 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3613 To update applications using SSL_CTX_set_cert_verify_callback(),
3614 a dummy argument can be added to their callback functions.
3615 [D. K. Smetters <smetters@parc.xerox.com>]
3617 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3618 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3620 *) Add and OPENSSL_LOAD_CONF define which will cause
3621 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3622 This allows older applications to transparently support certain
3623 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3624 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3625 load the config file and OPENSSL_add_all_algorithms_conf() which will
3626 always load it have also been added.
3629 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3630 Adjust NIDs and EVP layer.
3631 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3633 *) Config modules support in openssl utility.
3635 Most commands now load modules from the config file,
3636 though in a few (such as version) this isn't done
3637 because it couldn't be used for anything.
3639 In the case of ca and req the config file used is
3640 the same as the utility itself: that is the -config
3641 command line option can be used to specify an
3645 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3646 use "openssl_conf" if filename is NULL use default openssl config file.
3649 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3650 config section name. Add a new flag to tolerate a missing config file
3651 and move code to CONF_modules_load_file().
3654 *) Support for crypto accelerator cards from Accelerated Encryption
3655 Processing, www.aep.ie. (Use engine 'aep')
3656 The support was copied from 0.9.6c [engine] and adapted/corrected
3657 to work with the new engine framework.
3658 [AEP Inc. and Richard Levitte]
3660 *) Support for SureWare crypto accelerator cards from Baltimore
3661 Technologies. (Use engine 'sureware')
3662 The support was copied from 0.9.6c [engine] and adapted
3663 to work with the new engine framework.
3666 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3667 make the newer ENGINE framework commands for the CHIL engine work.
3668 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3670 *) Make it possible to produce shared libraries on ReliantUNIX.
3671 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3673 *) Add the configuration target debug-linux-ppro.
3674 Make 'openssl rsa' use the general key loading routines
3675 implemented in apps.c, and make those routines able to
3676 handle the key format FORMAT_NETSCAPE and the variant
3678 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3680 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3681 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3683 *) Add -keyform to rsautl, and document -engine.
3684 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3686 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3687 BIO_R_NO_SUCH_FILE error code rather than the generic
3688 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3691 *) Add new functions
3693 ERR_peek_last_error_line
3694 ERR_peek_last_error_line_data.
3695 These are similar to
3698 ERR_peek_error_line_data,
3699 but report on the latest error recorded rather than the first one
3700 still in the error queue.
3701 [Ben Laurie, Bodo Moeller]
3703 *) default_algorithms option in ENGINE config module. This allows things
3705 default_algorithms = ALL
3706 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3709 *) Prelminary ENGINE config module.
3712 *) New experimental application configuration code.
3715 *) Change the AES code to follow the same name structure as all other
3716 symmetric ciphers, and behave the same way. Move everything to
3717 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3718 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3720 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3721 [Ben Laurie and Theo de Raadt]
3723 *) Add option to output public keys in req command.
3724 [Massimiliano Pala madwolf@openca.org]
3726 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3727 (up to about 10% better than before for P-192 and P-224).
3730 *) New functions/macros
3732 SSL_CTX_set_msg_callback(ctx, cb)
3733 SSL_CTX_set_msg_callback_arg(ctx, arg)
3734 SSL_set_msg_callback(ssl, cb)
3735 SSL_set_msg_callback_arg(ssl, arg)
3737 to request calling a callback function
3739 void cb(int write_p, int version, int content_type,
3740 const void *buf, size_t len, SSL *ssl, void *arg)
3742 whenever a protocol message has been completely received
3743 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3744 protocol version according to which the SSL library interprets
3745 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3746 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3747 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3748 specification (change_cipher_spec(20), alert(21), handshake(22)).
3749 'buf' and 'len' point to the actual message, 'ssl' to the
3750 SSL object, and 'arg' is the application-defined value set by
3751 SSL[_CTX]_set_msg_callback_arg().
3753 'openssl s_client' and 'openssl s_server' have new '-msg' options
3754 to enable a callback that displays all protocol messages.
3757 *) Change the shared library support so shared libraries are built as
3758 soon as the corresponding static library is finished, and thereby get
3759 openssl and the test programs linked against the shared library.
3760 This still only happens when the keyword "shard" has been given to
3761 the configuration scripts.
3763 NOTE: shared library support is still an experimental thing, and
3764 backward binary compatibility is still not guaranteed.
3765 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3767 *) Add support for Subject Information Access extension.
3768 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3770 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3771 additional bytes when new memory had to be allocated, not just
3772 when reusing an existing buffer.
3775 *) New command line and configuration option 'utf8' for the req command.
3776 This allows field values to be specified as UTF8 strings.
3779 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3780 runs for the former and machine-readable output for the latter.
3783 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3784 of the e-mail address in the DN (i.e., it will go into a certificate
3785 extension only). The new configuration file option 'email_in_dn = no'
3786 has the same effect.
3787 [Massimiliano Pala madwolf@openca.org]
3789 *) Change all functions with names starting with des_ to be starting
3790 with DES_ instead. Add wrappers that are compatible with libdes,
3791 but are named _ossl_old_des_*. Finally, add macros that map the
3792 des_* symbols to the corresponding _ossl_old_des_* if libdes
3793 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3794 desired, the des_* symbols will be mapped to DES_*, with one
3797 Since we provide two compatibility mappings, the user needs to
3798 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3799 compatibility is desired. The default (i.e., when that macro
3800 isn't defined) is OpenSSL 0.9.6c compatibility.
3802 There are also macros that enable and disable the support of old
3803 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3804 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3805 are defined, the default will apply: to support the old des routines.
3807 In either case, one must include openssl/des.h to get the correct
3808 definitions. Do not try to just include openssl/des_old.h, that
3811 NOTE: This is a major break of an old API into a new one. Software
3812 authors are encouraged to switch to the DES_ style functions. Some
3813 time in the future, des_old.h and the libdes compatibility functions
3814 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3815 default), and then completely removed.
3818 *) Test for certificates which contain unsupported critical extensions.
3819 If such a certificate is found during a verify operation it is
3820 rejected by default: this behaviour can be overridden by either
3821 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3822 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3823 X509_supported_extension() has also been added which returns 1 if a
3824 particular extension is supported.
3827 *) Modify the behaviour of EVP cipher functions in similar way to digests
3828 to retain compatibility with existing code.
3831 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3832 compatibility with existing code. In particular the 'ctx' parameter does
3833 not have to be to be initialized before the call to EVP_DigestInit() and
3834 it is tidied up after a call to EVP_DigestFinal(). New function
3835 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3836 EVP_MD_CTX_copy() changed to not require the destination to be
3837 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3838 requires the destination to be valid.
3840 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3841 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3844 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3845 so that complete 'Handshake' protocol structures are kept in memory
3846 instead of overwriting 'msg_type' and 'length' with 'body' data.
3849 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3850 [Massimo Santin via Richard Levitte]
3852 *) Major restructuring to the underlying ENGINE code. This includes
3853 reduction of linker bloat, separation of pure "ENGINE" manipulation
3854 (initialisation, etc) from functionality dealing with implementations
3855 of specific crypto iterfaces. This change also introduces integrated
3856 support for symmetric ciphers and digest implementations - so ENGINEs
3857 can now accelerate these by providing EVP_CIPHER and EVP_MD
3858 implementations of their own. This is detailed in crypto/engine/README
3859 as it couldn't be adequately described here. However, there are a few
3860 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3861 were changed in the original introduction of ENGINE code have now
3862 reverted back - the hooking from this code to ENGINE is now a good
3863 deal more passive and at run-time, operations deal directly with
3864 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3865 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3866 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3867 they were not being used by the framework as there is no concept of a
3868 BIGNUM_METHOD and they could not be generalised to the new
3869 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3870 ENGINE_cpy() has been removed as it cannot be consistently defined in
3874 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3877 *) Change mkdef.pl to sort symbols that get the same entry number,
3878 and make sure the automatically generated functions ERR_load_*
3879 become part of libeay.num as well.
3882 *) New function SSL_renegotiate_pending(). This returns true once
3883 renegotiation has been requested (either SSL_renegotiate() call
3884 or HelloRequest/ClientHello receveived from the peer) and becomes
3885 false once a handshake has been completed.
3886 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3887 sends a HelloRequest, but does not ensure that a handshake takes
3888 place. SSL_renegotiate_pending() is useful for checking if the
3889 client has followed the request.)
3892 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3893 By default, clients may request session resumption even during
3894 renegotiation (if session ID contexts permit); with this option,
3895 session resumption is possible only in the first handshake.
3897 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3898 more bits available for options that should not be part of
3899 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3902 *) Add some demos for certificate and certificate request creation.
3905 *) Make maximum certificate chain size accepted from the peer application
3906 settable (SSL*_get/set_max_cert_list()), as proposed by
3907 "Douglas E. Engert" <deengert@anl.gov>.
3910 *) Add support for shared libraries for Unixware-7
3911 (Boyd Lynn Gerber <gerberb@zenez.com>).
3914 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3915 be done prior to destruction. Use this to unload error strings from
3916 ENGINEs that load their own error strings. NB: This adds two new API
3917 functions to "get" and "set" this destroy handler in an ENGINE.
3920 *) Alter all existing ENGINE implementations (except "openssl" and
3921 "openbsd") to dynamically instantiate their own error strings. This
3922 makes them more flexible to be built both as statically-linked ENGINEs
3923 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3924 Also, add stub code to each that makes building them as self-contained
3925 shared-libraries easier (see README.ENGINE).
3928 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3929 implementations into applications that are completely implemented in
3930 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3931 commands that can be used to configure what shared-library to load and
3932 to control aspects of the way it is handled. Also, made an update to
3933 the README.ENGINE file that brings its information up-to-date and
3934 provides some information and instructions on the "dynamic" ENGINE
3935 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3938 *) Make it possible to unload ranges of ERR strings with a new
3939 "ERR_unload_strings" function.
3942 *) Add a copy() function to EVP_MD.
3945 *) Make EVP_MD routines take a context pointer instead of just the
3946 md_data void pointer.
3949 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3950 that the digest can only process a single chunk of data
3951 (typically because it is provided by a piece of
3952 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3953 is only going to provide a single chunk of data, and hence the
3954 framework needn't accumulate the data for oneshot drivers.
3957 *) As with "ERR", make it possible to replace the underlying "ex_data"
3958 functions. This change also alters the storage and management of global
3959 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3960 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3961 index counters. The API functions that use this state have been changed
3962 to take a "class_index" rather than pointers to the class's local STACK
3963 and counter, and there is now an API function to dynamically create new
3964 classes. This centralisation allows us to (a) plug a lot of the
3965 thread-safety problems that existed, and (b) makes it possible to clean
3966 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3967 such data would previously have always leaked in application code and
3968 workarounds were in place to make the memory debugging turn a blind eye
3969 to it. Application code that doesn't use this new function will still
3970 leak as before, but their memory debugging output will announce it now
3971 rather than letting it slide.
3973 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3974 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3975 has a return value to indicate success or failure.
3978 *) Make it possible to replace the underlying "ERR" functions such that the
3979 global state (2 LHASH tables and 2 locks) is only used by the "default"
3980 implementation. This change also adds two functions to "get" and "set"
3981 the implementation prior to it being automatically set the first time
3982 any other ERR function takes place. Ie. an application can call "get",
3983 pass the return value to a module it has just loaded, and that module
3984 can call its own "set" function using that value. This means the
3985 module's "ERR" operations will use (and modify) the error state in the
3986 application and not in its own statically linked copy of OpenSSL code.
3989 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3990 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3991 the operation, and provides a more encapsulated way for external code
3992 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3993 to use these functions rather than manually incrementing the counts.
3995 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3998 *) Add EVP test program.
4001 *) Add symmetric cipher support to ENGINE. Expect the API to change!
4004 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
4005 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
4006 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
4007 These allow a CRL to be built without having to access X509_CRL fields
4008 directly. Modify 'ca' application to use new functions.
4011 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
4012 bug workarounds. Rollback attack detection is a security feature.
4013 The problem will only arise on OpenSSL servers when TLSv1 is not
4014 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
4015 Software authors not wanting to support TLSv1 will have special reasons
4016 for their choice and can explicitly enable this option.
4017 [Bodo Moeller, Lutz Jaenicke]
4019 *) Rationalise EVP so it can be extended: don't include a union of
4020 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
4021 (similar to those existing for EVP_CIPHER_CTX).
4026 EVP_MD_CTX_init(&md); /* new function call */
4027 EVP_DigestInit(&md, EVP_sha1());
4028 EVP_DigestUpdate(&md, in, len);
4029 EVP_DigestFinal(&md, out, NULL);
4030 EVP_MD_CTX_cleanup(&md); /* new function call */
4034 *) Make DES key schedule conform to the usual scheme, as well as
4035 correcting its structure. This means that calls to DES functions
4036 now have to pass a pointer to a des_key_schedule instead of a
4037 plain des_key_schedule (which was actually always a pointer
4040 des_key_schedule ks;
4042 des_set_key_checked(..., &ks);
4043 des_ncbc_encrypt(..., &ks, ...);
4045 (Note that a later change renames 'des_...' into 'DES_...'.)
4048 *) Initial reduction of linker bloat: the use of some functions, such as
4049 PEM causes large amounts of unused functions to be linked in due to
4050 poor organisation. For example pem_all.c contains every PEM function
4051 which has a knock on effect of linking in large amounts of (unused)
4052 ASN1 code. Grouping together similar functions and splitting unrelated
4053 functions prevents this.
4056 *) Cleanup of EVP macros.
4059 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
4060 correct _ecb suffix.
4063 *) Add initial OCSP responder support to ocsp application. The
4064 revocation information is handled using the text based index
4065 use by the ca application. The responder can either handle
4066 requests generated internally, supplied in files (for example
4067 via a CGI script) or using an internal minimal server.
4070 *) Add configuration choices to get zlib compression for TLS.
4073 *) Changes to Kerberos SSL for RFC 2712 compliance:
4074 1. Implemented real KerberosWrapper, instead of just using
4075 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
4076 2. Implemented optional authenticator field of KerberosWrapper.
4078 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
4079 and authenticator structs; see crypto/krb5/.
4081 Generalized Kerberos calls to support multiple Kerberos libraries.
4082 [Vern Staats <staatsvr@asc.hpc.mil>,
4083 Jeffrey Altman <jaltman@columbia.edu>
4084 via Richard Levitte]
4086 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
4087 already does with RSA. testdsa.h now has 'priv_key/pub_key'
4088 values for each of the key sizes rather than having just
4089 parameters (and 'speed' generating keys each time).
4092 *) Speed up EVP routines.
4095 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
4096 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
4097 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
4098 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
4100 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
4101 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
4102 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
4105 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
4107 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
4110 *) Added the OS2-EMX target.
4111 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
4113 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
4114 to support NCONF routines in extension code. New function CONF_set_nconf()
4115 to allow functions which take an NCONF to also handle the old LHASH
4116 structure: this means that the old CONF compatible routines can be
4117 retained (in particular wrt extensions) without having to duplicate the
4118 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
4121 *) Enhance the general user interface with mechanisms for inner control
4122 and with possibilities to have yes/no kind of prompts.
4125 *) Change all calls to low level digest routines in the library and
4126 applications to use EVP. Add missing calls to HMAC_cleanup() and
4127 don't assume HMAC_CTX can be copied using memcpy().
4128 [Verdon Walker <VWalker@novell.com>, Steve Henson]
4130 *) Add the possibility to control engines through control names but with
4131 arbitrary arguments instead of just a string.
4132 Change the key loaders to take a UI_METHOD instead of a callback
4133 function pointer. NOTE: this breaks binary compatibility with earlier
4134 versions of OpenSSL [engine].
4135 Adapt the nCipher code for these new conditions and add a card insertion
4139 *) Enhance the general user interface with mechanisms to better support
4140 dialog box interfaces, application-defined prompts, the possibility
4141 to use defaults (for example default passwords from somewhere else)
4142 and interrupts/cancellations.
4145 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
4146 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
4149 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
4150 tidy up some unnecessarily weird code in 'sk_new()').
4151 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
4153 *) Change the key loading routines for ENGINEs to use the same kind
4154 callback (pem_password_cb) as all other routines that need this
4158 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
4159 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
4160 than this minimum value is recommended.
4163 *) New random seeder for OpenVMS, using the system process statistics
4164 that are easily reachable.
4167 *) Windows apparently can't transparently handle global
4168 variables defined in DLLs. Initialisations such as:
4170 const ASN1_ITEM *it = &ASN1_INTEGER_it;
4172 wont compile. This is used by the any applications that need to
4173 declare their own ASN1 modules. This was fixed by adding the option
4174 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
4175 needed for static libraries under Win32.
4178 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
4179 setting of purpose and trust fields. New X509_STORE trust and
4180 purpose functions and tidy up setting in other SSL functions.
4183 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
4184 structure. These are inherited by X509_STORE_CTX when it is
4185 initialised. This allows various defaults to be set in the
4186 X509_STORE structure (such as flags for CRL checking and custom
4187 purpose or trust settings) for functions which only use X509_STORE_CTX
4188 internally such as S/MIME.
4190 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
4191 trust settings if they are not set in X509_STORE. This allows X509_STORE
4192 purposes and trust (in S/MIME for example) to override any set by default.
4194 Add command line options for CRL checking to smime, s_client and s_server
4198 *) Initial CRL based revocation checking. If the CRL checking flag(s)
4199 are set then the CRL is looked up in the X509_STORE structure and
4200 its validity and signature checked, then if the certificate is found
4201 in the CRL the verify fails with a revoked error.
4203 Various new CRL related callbacks added to X509_STORE_CTX structure.
4205 Command line options added to 'verify' application to support this.
4207 This needs some additional work, such as being able to handle multiple
4208 CRLs with different times, extension based lookup (rather than just
4209 by subject name) and ultimately more complete V2 CRL extension
4213 *) Add a general user interface API (crypto/ui/). This is designed
4214 to replace things like des_read_password and friends (backward
4215 compatibility functions using this new API are provided).
4216 The purpose is to remove prompting functions from the DES code
4217 section as well as provide for prompting through dialog boxes in
4218 a window system and the like.
4221 *) Add "ex_data" support to ENGINE so implementations can add state at a
4222 per-structure level rather than having to store it globally.
4225 *) Make it possible for ENGINE structures to be copied when retrieved by
4226 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
4227 This causes the "original" ENGINE structure to act like a template,
4228 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
4229 operational state can be localised to each ENGINE structure, despite the
4230 fact they all share the same "methods". New ENGINE structures returned in
4231 this case have no functional references and the return value is the single
4232 structural reference. This matches the single structural reference returned
4233 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4237 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4238 needs to match any other type at all we need to manually clear the
4242 *) Changes to the "openssl engine" utility to include;
4243 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4244 about an ENGINE's available control commands.
4245 - executing control commands from command line arguments using the
4246 '-pre' and '-post' switches. '-post' is only used if '-t' is
4247 specified and the ENGINE is successfully initialised. The syntax for
4248 the individual commands are colon-separated, for example;
4249 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4252 *) New dynamic control command support for ENGINEs. ENGINEs can now
4253 declare their own commands (numbers), names (strings), descriptions,
4254 and input types for run-time discovery by calling applications. A
4255 subset of these commands are implicitly classed as "executable"
4256 depending on their input type, and only these can be invoked through
4257 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
4258 can be based on user input, config files, etc). The distinction is
4259 that "executable" commands cannot return anything other than a boolean
4260 result and can only support numeric or string input, whereas some
4261 discoverable commands may only be for direct use through
4262 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
4263 pointers, or other custom uses. The "executable" commands are to
4264 support parameterisations of ENGINE behaviour that can be
4265 unambiguously defined by ENGINEs and used consistently across any
4266 OpenSSL-based application. Commands have been added to all the
4267 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
4268 control over shared-library paths without source code alterations.
4271 *) Changed all ENGINE implementations to dynamically allocate their
4272 ENGINEs rather than declaring them statically. Apart from this being
4273 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
4274 this also allows the implementations to compile without using the
4275 internal engine_int.h header.
4278 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
4279 'const' value. Any code that should be able to modify a RAND_METHOD
4280 should already have non-const pointers to it (ie. they should only
4281 modify their own ones).
4284 *) Made a variety of little tweaks to the ENGINE code.
4285 - "atalla" and "ubsec" string definitions were moved from header files
4286 to C code. "nuron" string definitions were placed in variables
4287 rather than hard-coded - allowing parameterisation of these values
4288 later on via ctrl() commands.
4289 - Removed unused "#if 0"'d code.
4290 - Fixed engine list iteration code so it uses ENGINE_free() to release
4291 structural references.
4292 - Constified the RAND_METHOD element of ENGINE structures.
4293 - Constified various get/set functions as appropriate and added
4294 missing functions (including a catch-all ENGINE_cpy that duplicates
4295 all ENGINE values onto a new ENGINE except reference counts/state).
4296 - Removed NULL parameter checks in get/set functions. Setting a method
4297 or function to NULL is a way of cancelling out a previously set
4298 value. Passing a NULL ENGINE parameter is just plain stupid anyway
4299 and doesn't justify the extra error symbols and code.
4300 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
4301 flags from engine_int.h to engine.h.
4302 - Changed prototypes for ENGINE handler functions (init(), finish(),
4303 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
4306 *) Implement binary inversion algorithm for BN_mod_inverse in addition
4307 to the algorithm using long division. The binary algorithm can be
4308 used only if the modulus is odd. On 32-bit systems, it is faster
4309 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
4310 roughly 5-15% for 256-bit moduli), so we use it only for moduli
4311 up to 450 bits. In 64-bit environments, the binary algorithm
4312 appears to be advantageous for much longer moduli; here we use it
4313 for moduli up to 2048 bits.
4316 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
4317 could not support the combine flag in choice fields.
4320 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
4321 extensions from a certificate request to the certificate.
4324 *) Allow multiple 'certopt' and 'nameopt' options to be separated
4325 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
4326 file: this allows the display of the certificate about to be
4327 signed to be customised, to allow certain fields to be included
4328 or excluded and extension details. The old system didn't display
4329 multicharacter strings properly, omitted fields not in the policy
4330 and couldn't display additional details such as extensions.
4333 *) Function EC_POINTs_mul for multiple scalar multiplication
4334 of an arbitrary number of elliptic curve points
4335 \sum scalars[i]*points[i],
4336 optionally including the generator defined for the EC_GROUP:
4337 scalar*generator + \sum scalars[i]*points[i].
4339 EC_POINT_mul is a simple wrapper function for the typical case
4340 that the point list has just one item (besides the optional
4344 *) First EC_METHODs for curves over GF(p):
4346 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
4347 operations and provides various method functions that can also
4348 operate with faster implementations of modular arithmetic.
4350 EC_GFp_mont_method() reuses most functions that are part of
4351 EC_GFp_simple_method, but uses Montgomery arithmetic.
4353 [Bodo Moeller; point addition and point doubling
4354 implementation directly derived from source code provided by
4355 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
4357 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
4358 crypto/ec/ec_lib.c):
4360 Curves are EC_GROUP objects (with an optional group generator)
4361 based on EC_METHODs that are built into the library.
4363 Points are EC_POINT objects based on EC_GROUP objects.
4365 Most of the framework would be able to handle curves over arbitrary
4366 finite fields, but as there are no obvious types for fields other
4367 than GF(p), some functions are limited to that for now.
4370 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
4371 that the file contains a complete HTTP response.
4374 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
4375 change the def and num file printf format specifier from "%-40sXXX"
4376 to "%-39s XXX". The latter will always guarantee a space after the
4377 field while the former will cause them to run together if the field
4378 is 40 of more characters long.
4381 *) Constify the cipher and digest 'method' functions and structures
4382 and modify related functions to take constant EVP_MD and EVP_CIPHER
4386 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
4387 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
4390 *) Modify EVP_Digest*() routines so they now return values. Although the
4391 internal software routines can never fail additional hardware versions
4395 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
4397 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
4398 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
4401 ERR_R_NESTED_ASN1_ERROR
4403 ERR_R_MISSING_ASN1_EOS
4404 were 4 .. 9, conflicting with
4405 ERR_LIB_RSA (= ERR_R_RSA_LIB)
4407 ERR_LIB_PEM (= ERR_R_PEM_LIB).
4408 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
4410 Add new error code 'ERR_R_INTERNAL_ERROR'.
4413 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
4417 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
4418 sets the subject name for a new request or supersedes the
4419 subject name in a given request. Formats that can be parsed are
4420 'CN=Some Name, OU=myOU, C=IT'
4422 'CN=Some Name/OU=myOU/C=IT'.
4424 Add options '-batch' and '-verbose' to 'openssl req'.
4425 [Massimiliano Pala <madwolf@hackmasters.net>]
4427 *) Introduce the possibility to access global variables through
4428 functions on platform were that's the best way to handle exporting
4429 global variables in shared libraries. To enable this functionality,
4430 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
4431 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
4432 is normally done by Configure or something similar).
4434 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
4435 in the source file (foo.c) like this:
4437 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
4438 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
4440 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
4441 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
4443 OPENSSL_DECLARE_GLOBAL(int,foo);
4444 #define foo OPENSSL_GLOBAL_REF(foo)
4445 OPENSSL_DECLARE_GLOBAL(double,bar);
4446 #define bar OPENSSL_GLOBAL_REF(bar)
4448 The #defines are very important, and therefore so is including the
4449 header file everywhere where the defined globals are used.
4451 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
4452 of ASN.1 items, but that structure is a bit different.
4454 The largest change is in util/mkdef.pl which has been enhanced with
4455 better and easier to understand logic to choose which symbols should
4456 go into the Windows .def files as well as a number of fixes and code
4457 cleanup (among others, algorithm keywords are now sorted
4458 lexicographically to avoid constant rewrites).
4461 *) In BN_div() keep a copy of the sign of 'num' before writing the
4462 result to 'rm' because if rm==num the value will be overwritten
4463 and produce the wrong result if 'num' is negative: this caused
4464 problems with BN_mod() and BN_nnmod().
4467 *) Function OCSP_request_verify(). This checks the signature on an
4468 OCSP request and verifies the signer certificate. The signer
4469 certificate is just checked for a generic purpose and OCSP request
4473 *) Add OCSP_check_validity() function to check the validity of OCSP
4474 responses. OCSP responses are prepared in real time and may only
4475 be a few seconds old. Simply checking that the current time lies
4476 between thisUpdate and nextUpdate max reject otherwise valid responses
4477 caused by either OCSP responder or client clock inaccuracy. Instead
4478 we allow thisUpdate and nextUpdate to fall within a certain period of
4479 the current time. The age of the response can also optionally be
4480 checked. Two new options -validity_period and -status_age added to
4484 *) If signature or public key algorithm is unrecognized print out its
4485 OID rather that just UNKNOWN.
4488 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
4489 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
4490 ID to be generated from the issuer certificate alone which can then be
4491 passed to OCSP_id_issuer_cmp().
4494 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
4495 ASN1 modules to export functions returning ASN1_ITEM pointers
4496 instead of the ASN1_ITEM structures themselves. This adds several
4497 new macros which allow the underlying ASN1 function/structure to
4498 be accessed transparently. As a result code should not use ASN1_ITEM
4499 references directly (such as &X509_it) but instead use the relevant
4500 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
4501 use of the new ASN1 code on platforms where exporting structures
4502 is problematical (for example in shared libraries) but exporting
4503 functions returning pointers to structures is not.
4506 *) Add support for overriding the generation of SSL/TLS session IDs.
4507 These callbacks can be registered either in an SSL_CTX or per SSL.
4508 The purpose of this is to allow applications to control, if they wish,
4509 the arbitrary values chosen for use as session IDs, particularly as it
4510 can be useful for session caching in multiple-server environments. A
4511 command-line switch for testing this (and any client code that wishes
4512 to use such a feature) has been added to "s_server".
4513 [Geoff Thorpe, Lutz Jaenicke]
4515 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
4516 of the form '#if defined(...) || defined(...) || ...' and
4517 '#if !defined(...) && !defined(...) && ...'. This also avoids
4518 the growing number of special cases it was previously handling.
4521 *) Make all configuration macros available for application by making
4522 sure they are available in opensslconf.h, by giving them names starting
4523 with "OPENSSL_" to avoid conflicts with other packages and by making
4524 sure e_os2.h will cover all platform-specific cases together with
4526 Additionally, it is now possible to define configuration/platform-
4527 specific names (called "system identities"). In the C code, these
4528 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
4529 macro with the name beginning with "OPENSSL_SYS_", which is determined
4530 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
4534 *) New option -set_serial to 'req' and 'x509' this allows the serial
4535 number to use to be specified on the command line. Previously self
4536 signed certificates were hard coded with serial number 0 and the
4537 CA options of 'x509' had to use a serial number in a file which was
4541 *) New options to 'ca' utility to support V2 CRL entry extensions.
4542 Currently CRL reason, invalidity date and hold instruction are
4543 supported. Add new CRL extensions to V3 code and some new objects.
4546 *) New function EVP_CIPHER_CTX_set_padding() this is used to
4547 disable standard block padding (aka PKCS#5 padding) in the EVP
4548 API, which was previously mandatory. This means that the data is
4549 not padded in any way and so the total length much be a multiple
4550 of the block size, otherwise an error occurs.
4553 *) Initial (incomplete) OCSP SSL support.
4556 *) New function OCSP_parse_url(). This splits up a URL into its host,
4557 port and path components: primarily to parse OCSP URLs. New -url
4558 option to ocsp utility.
4561 *) New nonce behavior. The return value of OCSP_check_nonce() now
4562 reflects the various checks performed. Applications can decide
4563 whether to tolerate certain situations such as an absent nonce
4564 in a response when one was present in a request: the ocsp application
4565 just prints out a warning. New function OCSP_add1_basic_nonce()
4566 this is to allow responders to include a nonce in a response even if
4567 the request is nonce-less.
4570 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
4571 skipped when using openssl x509 multiple times on a single input file,
4572 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
4575 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
4576 set string type: to handle setting ASN1_TIME structures. Fix ca
4577 utility to correctly initialize revocation date of CRLs.
4580 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
4581 the clients preferred ciphersuites and rather use its own preferences.
4582 Should help to work around M$ SGC (Server Gated Cryptography) bug in
4583 Internet Explorer by ensuring unchanged hash method during stepup.
4584 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
4587 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
4588 to aes and add a new 'exist' option to print out symbols that don't
4592 *) Additional options to ocsp utility to allow flags to be set and
4593 additional certificates supplied.
4596 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
4597 OCSP client a number of certificate to only verify the response
4601 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
4602 handle the new API. Currently only ECB, CBC modes supported. Add new
4605 Add TLS AES ciphersuites as described in RFC3268, "Advanced
4606 Encryption Standard (AES) Ciphersuites for Transport Layer
4607 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
4608 not enabled by default and were not part of the "ALL" ciphersuite
4609 alias because they were not yet official; they could be
4610 explicitly requested by specifying the "AESdraft" ciphersuite
4611 group alias. In the final release of OpenSSL 0.9.7, the group
4612 alias is called "AES" and is part of "ALL".)
4613 [Ben Laurie, Steve Henson, Bodo Moeller]
4615 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
4616 request to response.
4619 *) Functions for OCSP responders. OCSP_request_onereq_count(),
4620 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
4621 extract information from a certificate request. OCSP_response_create()
4622 creates a response and optionally adds a basic response structure.
4623 OCSP_basic_add1_status() adds a complete single response to a basic
4624 response and returns the OCSP_SINGLERESP structure just added (to allow
4625 extensions to be included for example). OCSP_basic_add1_cert() adds a
4626 certificate to a basic response and OCSP_basic_sign() signs a basic
4627 response with various flags. New helper functions ASN1_TIME_check()
4628 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
4629 (converts ASN1_TIME to GeneralizedTime).
4632 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
4633 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
4634 structure from a certificate. X509_pubkey_digest() digests the public_key
4635 contents: this is used in various key identifiers.
4638 *) Make sk_sort() tolerate a NULL argument.
4639 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
4641 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
4642 passed by the function are trusted implicitly. If any of them signed the
4643 response then it is assumed to be valid and is not verified.
4646 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
4647 to data. This was previously part of the PKCS7 ASN1 code. This
4648 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
4649 [Steve Henson, reported by Kenneth R. Robinette
4650 <support@securenetterm.com>]
4652 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
4653 routines: without these tracing memory leaks is very painful.
4654 Fix leaks in PKCS12 and PKCS7 routines.
4657 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
4658 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
4659 effectively meant GeneralizedTime would never be used. Now it
4660 is initialised to -1 but X509_time_adj() now has to check the value
4661 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
4662 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
4663 [Steve Henson, reported by Kenneth R. Robinette
4664 <support@securenetterm.com>]
4666 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
4667 result in a zero length in the ASN1_INTEGER structure which was
4668 not consistent with the structure when d2i_ASN1_INTEGER() was used
4669 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
4670 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
4671 where it did not print out a minus for negative ASN1_INTEGER.
4674 *) Add summary printout to ocsp utility. The various functions which
4675 convert status values to strings have been renamed to:
4676 OCSP_response_status_str(), OCSP_cert_status_str() and
4677 OCSP_crl_reason_str() and are no longer static. New options
4678 to verify nonce values and to disable verification. OCSP response
4679 printout format cleaned up.
4682 *) Add additional OCSP certificate checks. These are those specified
4683 in RFC2560. This consists of two separate checks: the CA of the
4684 certificate being checked must either be the OCSP signer certificate
4685 or the issuer of the OCSP signer certificate. In the latter case the
4686 OCSP signer certificate must contain the OCSP signing extended key
4687 usage. This check is performed by attempting to match the OCSP
4688 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
4689 in the OCSP_CERTID structures of the response.
4692 *) Initial OCSP certificate verification added to OCSP_basic_verify()
4693 and related routines. This uses the standard OpenSSL certificate
4694 verify routines to perform initial checks (just CA validity) and
4695 to obtain the certificate chain. Then additional checks will be
4696 performed on the chain. Currently the root CA is checked to see
4697 if it is explicitly trusted for OCSP signing. This is used to set
4698 a root CA as a global signing root: that is any certificate that
4699 chains to that CA is an acceptable OCSP signing certificate.
4702 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
4703 extensions from a separate configuration file.
4704 As when reading extensions from the main configuration file,
4705 the '-extensions ...' option may be used for specifying the
4707 [Massimiliano Pala <madwolf@comune.modena.it>]
4709 *) New OCSP utility. Allows OCSP requests to be generated or
4710 read. The request can be sent to a responder and the output
4711 parsed, outputed or printed in text form. Not complete yet:
4712 still needs to check the OCSP response validity.
4715 *) New subcommands for 'openssl ca':
4716 'openssl ca -status <serial>' prints the status of the cert with
4717 the given serial number (according to the index file).
4718 'openssl ca -updatedb' updates the expiry status of certificates
4720 [Massimiliano Pala <madwolf@comune.modena.it>]
4722 *) New '-newreq-nodes' command option to CA.pl. This is like
4723 '-newreq', but calls 'openssl req' with the '-nodes' option
4724 so that the resulting key is not encrypted.
4725 [Damien Miller <djm@mindrot.org>]
4727 *) New configuration for the GNU Hurd.
4728 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
4730 *) Initial code to implement OCSP basic response verify. This
4731 is currently incomplete. Currently just finds the signer's
4732 certificate and verifies the signature on the response.
4735 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
4736 value of OPENSSLDIR. This is available via the new '-d' option
4737 to 'openssl version', and is also included in 'openssl version -a'.
4740 *) Allowing defining memory allocation callbacks that will be given
4741 file name and line number information in additional arguments
4742 (a const char* and an int). The basic functionality remains, as
4743 well as the original possibility to just replace malloc(),
4744 realloc() and free() by functions that do not know about these
4745 additional arguments. To register and find out the current
4746 settings for extended allocation functions, the following
4747 functions are provided:
4749 CRYPTO_set_mem_ex_functions
4750 CRYPTO_set_locked_mem_ex_functions
4751 CRYPTO_get_mem_ex_functions
4752 CRYPTO_get_locked_mem_ex_functions
4754 These work the same way as CRYPTO_set_mem_functions and friends.
4755 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
4756 extended allocation function is enabled.
4757 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
4758 a conventional allocation function is enabled.
4759 [Richard Levitte, Bodo Moeller]
4761 *) Finish off removing the remaining LHASH function pointer casts.
4762 There should no longer be any prototype-casting required when using
4763 the LHASH abstraction, and any casts that remain are "bugs". See
4764 the callback types and macros at the head of lhash.h for details
4765 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
4768 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
4769 If /dev/[u]random devices are not available or do not return enough
4770 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
4772 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
4773 /etc/entropy will be queried once each in this sequence, quering stops
4774 when enough entropy was collected without querying more sockets.
4777 *) Change the Unix RAND_poll() variant to be able to poll several
4778 random devices, as specified by DEVRANDOM, until a sufficient amount
4779 of data has been collected. We spend at most 10 ms on each file
4780 (select timeout) and read in non-blocking mode. DEVRANDOM now
4781 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
4782 (previously it was just the string "/dev/urandom"), so on typical
4783 platforms the 10 ms delay will never occur.
4784 Also separate out the Unix variant to its own file, rand_unix.c.
4785 For VMS, there's a currently-empty rand_vms.c.
4788 *) Move OCSP client related routines to ocsp_cl.c. These
4789 provide utility functions which an application needing
4790 to issue a request to an OCSP responder and analyse the
4791 response will typically need: as opposed to those which an
4792 OCSP responder itself would need which will be added later.
4794 OCSP_request_sign() signs an OCSP request with an API similar
4795 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
4796 response. OCSP_response_get1_basic() extracts basic response
4797 from response. OCSP_resp_find_status(): finds and extracts status
4798 information from an OCSP_CERTID structure (which will be created
4799 when the request structure is built). These are built from lower
4800 level functions which work on OCSP_SINGLERESP structures but
4801 wont normally be used unless the application wishes to examine
4802 extensions in the OCSP response for example.
4804 Replace nonce routines with a pair of functions.
4805 OCSP_request_add1_nonce() adds a nonce value and optionally
4806 generates a random value. OCSP_check_nonce() checks the
4807 validity of the nonce in an OCSP response.
4810 *) Change function OCSP_request_add() to OCSP_request_add0_id().
4811 This doesn't copy the supplied OCSP_CERTID and avoids the
4812 need to free up the newly created id. Change return type
4813 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
4814 This can then be used to add extensions to the request.
4815 Deleted OCSP_request_new(), since most of its functionality
4816 is now in OCSP_REQUEST_new() (and the case insensitive name
4817 clash) apart from the ability to set the request name which
4818 will be added elsewhere.
4821 *) Update OCSP API. Remove obsolete extensions argument from
4822 various functions. Extensions are now handled using the new
4823 OCSP extension code. New simple OCSP HTTP function which
4824 can be used to send requests and parse the response.
4827 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
4828 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
4829 uses the special reorder version of SET OF to sort the attributes
4830 and reorder them to match the encoded order. This resolves a long
4831 standing problem: a verify on a PKCS7 structure just after signing
4832 it used to fail because the attribute order did not match the
4833 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
4834 it uses the received order. This is necessary to tolerate some broken
4835 software that does not order SET OF. This is handled by encoding
4836 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
4837 to produce the required SET OF.
4840 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
4841 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
4842 files to get correct declarations of the ASN.1 item variables.
4845 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
4846 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
4847 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
4848 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
4849 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
4850 ASN1_ITEM and no wrapper functions.
4853 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
4854 replace the old function pointer based I/O routines. Change most of
4855 the *_d2i_bio() and *_d2i_fp() functions to use these.
4858 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
4859 lines, recognice more "algorithms" that can be deselected, and make
4860 it complain about algorithm deselection that isn't recognised.
4863 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
4864 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
4865 to use new functions. Add NO_ASN1_OLD which can be set to remove
4866 some old style ASN1 functions: this can be used to determine if old
4867 code will still work when these eventually go away.
4870 *) New extension functions for OCSP structures, these follow the
4871 same conventions as certificates and CRLs.
4874 *) New function X509V3_add1_i2d(). This automatically encodes and
4875 adds an extension. Its behaviour can be customised with various
4876 flags to append, replace or delete. Various wrappers added for
4877 certifcates and CRLs.
4880 *) Fix to avoid calling the underlying ASN1 print routine when
4881 an extension cannot be parsed. Correct a typo in the
4882 OCSP_SERVICELOC extension. Tidy up print OCSP format.
4885 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
4886 entries for variables.
4889 *) Add functionality to apps/openssl.c for detecting locking
4890 problems: As the program is single-threaded, all we have
4891 to do is register a locking callback using an array for
4892 storing which locks are currently held by the program.
4895 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
4896 SSL_get_ex_data_X509_STORE_idx(), which is used in
4897 ssl_verify_cert_chain() and thus can be called at any time
4898 during TLS/SSL handshakes so that thread-safety is essential.
4899 Unfortunately, the ex_data design is not at all suited
4900 for multi-threaded use, so it probably should be abolished.
4903 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
4904 [Broadcom, tweaked and integrated by Geoff Thorpe]
4906 *) Move common extension printing code to new function
4907 X509V3_print_extensions(). Reorganise OCSP print routines and
4908 implement some needed OCSP ASN1 functions. Add OCSP extensions.
4911 *) New function X509_signature_print() to remove duplication in some
4915 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
4916 set (this was treated exactly the same as SET OF previously). This
4917 is used to reorder the STACK representing the structure to match the
4918 encoding. This will be used to get round a problem where a PKCS7
4919 structure which was signed could not be verified because the STACK
4920 order did not reflect the encoded order.
4923 *) Reimplement the OCSP ASN1 module using the new code.
4926 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
4927 for its ASN1 operations. The old style function pointers still exist
4928 for now but they will eventually go away.
4931 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
4932 completely replaces the old ASN1 functionality with a table driven
4933 encoder and decoder which interprets an ASN1_ITEM structure describing
4934 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
4935 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
4936 has also been converted to the new form.
4939 *) Change BN_mod_exp_recp so that negative moduli are tolerated
4940 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
4941 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
4942 for negative moduli.
4945 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
4946 of not touching the result's sign bit.
4949 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
4953 *) Changed the LHASH code to use prototypes for callbacks, and created
4954 macros to declare and implement thin (optionally static) functions
4955 that provide type-safety and avoid function pointer casting for the
4956 type-specific callbacks.
4959 *) Added Kerberos Cipher Suites to be used with TLS, as written in
4961 [Veers Staats <staatsvr@asc.hpc.mil>,
4962 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
4964 *) Reformat the FAQ so the different questions and answers can be divided
4965 in sections depending on the subject.
4968 *) Have the zlib compression code load ZLIB.DLL dynamically under
4972 *) New function BN_mod_sqrt for computing square roots modulo a prime
4973 (using the probabilistic Tonelli-Shanks algorithm unless
4974 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
4975 be handled deterministically).
4976 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
4978 *) Make BN_mod_inverse faster by explicitly handling small quotients
4979 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
4980 512 bits], about 30% for larger ones [1024 or 2048 bits].)
4983 *) New function BN_kronecker.
4986 *) Fix BN_gcd so that it works on negative inputs; the result is
4987 positive unless both parameters are zero.
4988 Previously something reasonably close to an infinite loop was
4989 possible because numbers could be growing instead of shrinking
4990 in the implementation of Euclid's algorithm.
4993 *) Fix BN_is_word() and BN_is_one() macros to take into account the
4994 sign of the number in question.
4996 Fix BN_is_word(a,w) to work correctly for w == 0.
4998 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
4999 because its test if the absolute value of 'a' equals 'w'.
5000 Note that BN_abs_is_word does *not* handle w == 0 reliably;
5001 it exists mostly for use in the implementations of BN_is_zero(),
5002 BN_is_one(), and BN_is_word().
5005 *) New function BN_swap.
5008 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
5009 the exponentiation functions are more likely to produce reasonable
5010 results on negative inputs.
5013 *) Change BN_mod_mul so that the result is always non-negative.
5014 Previously, it could be negative if one of the factors was negative;
5015 I don't think anyone really wanted that behaviour.
5018 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
5019 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
5020 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
5021 and add new functions:
5030 BN_mod_lshift1_quick
5034 These functions always generate non-negative results.
5036 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
5037 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
5039 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
5040 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
5041 be reduced modulo m.
5042 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
5045 The following entry accidentily appeared in the CHANGES file
5046 distributed with OpenSSL 0.9.7. The modifications described in
5047 it do *not* apply to OpenSSL 0.9.7.
5049 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
5050 was actually never needed) and in BN_mul(). The removal in BN_mul()
5051 required a small change in bn_mul_part_recursive() and the addition
5052 of the functions bn_cmp_part_words(), bn_sub_part_words() and
5053 bn_add_part_words(), which do the same thing as bn_cmp_words(),
5054 bn_sub_words() and bn_add_words() except they take arrays with
5059 *) In 'openssl passwd', verify passwords read from the terminal
5060 unless the '-salt' option is used (which usually means that
5061 verification would just waste user's time since the resulting
5062 hash is going to be compared with some given password hash)
5063 or the new '-noverify' option is used.
5065 This is an incompatible change, but it does not affect
5066 non-interactive use of 'openssl passwd' (passwords on the command
5067 line, '-stdin' option, '-in ...' option) and thus should not
5071 *) Remove all references to RSAref, since there's no more need for it.
5074 *) Make DSO load along a path given through an environment variable
5075 (SHLIB_PATH) with shl_load().
5078 *) Constify the ENGINE code as a result of BIGNUM constification.
5079 Also constify the RSA code and most things related to it. In a
5080 few places, most notable in the depth of the ASN.1 code, ugly
5081 casts back to non-const were required (to be solved at a later
5085 *) Make it so the openssl application has all engines loaded by default.
5088 *) Constify the BIGNUM routines a little more.
5091 *) Add the following functions:
5093 ENGINE_load_cswift()
5095 ENGINE_load_atalla()
5097 ENGINE_load_builtin_engines()
5099 That way, an application can itself choose if external engines that
5100 are built-in in OpenSSL shall ever be used or not. The benefit is
5101 that applications won't have to be linked with libdl or other dso
5102 libraries unless it's really needed.
5104 Changed 'openssl engine' to load all engines on demand.
5105 Changed the engine header files to avoid the duplication of some
5106 declarations (they differed!).
5109 *) 'openssl engine' can now list capabilities.
5112 *) Better error reporting in 'openssl engine'.
5115 *) Never call load_dh_param(NULL) in s_server.
5118 *) Add engine application. It can currently list engines by name and
5119 identity, and test if they are actually available.
5122 *) Improve RPM specification file by forcing symbolic linking and making
5123 sure the installed documentation is also owned by root.root.
5124 [Damien Miller <djm@mindrot.org>]
5126 *) Give the OpenSSL applications more possibilities to make use of
5127 keys (public as well as private) handled by engines.
5130 *) Add OCSP code that comes from CertCo.
5133 *) Add VMS support for the Rijndael code.
5136 *) Added untested support for Nuron crypto accelerator.
5139 *) Add support for external cryptographic devices. This code was
5140 previously distributed separately as the "engine" branch.
5141 [Geoff Thorpe, Richard Levitte]
5143 *) Rework the filename-translation in the DSO code. It is now possible to
5144 have far greater control over how a "name" is turned into a filename
5145 depending on the operating environment and any oddities about the
5146 different shared library filenames on each system.
5149 *) Support threads on FreeBSD-elf in Configure.
5152 *) Fix for SHA1 assembly problem with MASM: it produces
5153 warnings about corrupt line number information when assembling
5154 with debugging information. This is caused by the overlapping
5156 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
5159 NCONF_get_number() has no error checking at all. As a replacement,
5160 NCONF_get_number_e() is defined (_e for "error checking") and is
5161 promoted strongly. The old NCONF_get_number is kept around for
5162 binary backward compatibility.
5163 Make it possible for methods to load from something other than a BIO,
5164 by providing a function pointer that is given a name instead of a BIO.
5165 For example, this could be used to load configuration data from an
5169 *) Fix for non blocking accept BIOs. Added new I/O special reason
5170 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
5171 with non blocking I/O was not possible because no retry code was
5172 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
5176 *) Added the beginnings of Rijndael support.
5179 *) Fix for bug in DirectoryString mask setting. Add support for
5180 X509_NAME_print_ex() in 'req' and X509_print_ex() function
5181 to allow certificate printing to more controllable, additional
5182 'certopt' option to 'x509' to allow new printing options to be
5186 *) Clean old EAY MD5 hack from e_os.h.
5189 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
5191 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
5192 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
5193 [Joe Orton, Steve Henson]
5195 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
5197 *) Fix additional bug revealed by the NISCC test suite:
5199 Stop bug triggering large recursion when presented with
5200 certain ASN.1 tags (CVE-2003-0851)
5203 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
5205 *) Fix various bugs revealed by running the NISCC test suite:
5207 Stop out of bounds reads in the ASN1 code when presented with
5208 invalid tags (CVE-2003-0543 and CVE-2003-0544).
5210 If verify callback ignores invalid public key errors don't try to check
5211 certificate signature with the NULL public key.
5215 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
5216 if the server requested one: as stated in TLS 1.0 and SSL 3.0
5220 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
5221 extra data after the compression methods not only for TLS 1.0
5222 but also for SSL 3.0 (as required by the specification).
5223 [Bodo Moeller; problem pointed out by Matthias Loepfe]
5225 *) Change X509_certificate_type() to mark the key as exported/exportable
5226 when it's 512 *bits* long, not 512 bytes.
5229 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
5231 *) Countermeasure against the Klima-Pokorny-Rosa extension of
5232 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
5233 a protocol version number mismatch like a decryption error
5234 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
5237 *) Turn on RSA blinding by default in the default implementation
5238 to avoid a timing attack. Applications that don't want it can call
5239 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
5240 They would be ill-advised to do so in most cases.
5241 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
5243 *) Change RSA blinding code so that it works when the PRNG is not
5244 seeded (in this case, the secret RSA exponent is abused as
5245 an unpredictable seed -- if it is not unpredictable, there
5246 is no point in blinding anyway). Make RSA blinding thread-safe
5247 by remembering the creator's thread ID in rsa->blinding and
5248 having all other threads use local one-time blinding factors
5249 (this requires more computation than sharing rsa->blinding, but
5250 avoids excessive locking; and if an RSA object is not shared
5251 between threads, blinding will still be very fast).
5254 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
5256 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
5257 via timing by performing a MAC computation even if incorrrect
5258 block cipher padding has been found. This is a countermeasure
5259 against active attacks where the attacker has to distinguish
5260 between bad padding and a MAC verification error. (CVE-2003-0078)
5262 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
5263 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
5264 Martin Vuagnoux (EPFL, Ilion)]
5266 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
5268 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
5269 memory from it's contents. This is done with a counter that will
5270 place alternating values in each byte. This can be used to solve
5271 two issues: 1) the removal of calls to memset() by highly optimizing
5272 compilers, and 2) cleansing with other values than 0, since those can
5273 be read through on certain media, for example a swap space on disk.
5276 *) Bugfix: client side session caching did not work with external caching,
5277 because the session->cipher setting was not restored when reloading
5278 from the external cache. This problem was masked, when
5279 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
5280 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
5283 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
5284 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
5285 [Zeev Lieber <zeev-l@yahoo.com>]
5287 *) Undo an undocumented change introduced in 0.9.6e which caused
5288 repeated calls to OpenSSL_add_all_ciphers() and
5289 OpenSSL_add_all_digests() to be ignored, even after calling
5293 *) Change the default configuration reader to deal with last line not
5294 being properly terminated.
5297 *) Change X509_NAME_cmp() so it applies the special rules on handling
5298 DN values that are of type PrintableString, as well as RDNs of type
5299 emailAddress where the value has the type ia5String.
5300 [stefank@valicert.com via Richard Levitte]
5302 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
5303 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
5304 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
5305 the bitwise-OR of the two for use by the majority of applications
5306 wanting this behaviour, and update the docs. The documented
5307 behaviour and actual behaviour were inconsistent and had been
5308 changing anyway, so this is more a bug-fix than a behavioural
5310 [Geoff Thorpe, diagnosed by Nadav Har'El]
5312 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
5313 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
5316 *) Fix initialization code race conditions in
5317 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
5318 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
5319 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
5320 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
5321 ssl2_get_cipher_by_char(),
5322 ssl3_get_cipher_by_char().
5323 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
5325 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
5326 the cached sessions are flushed, as the remove_cb() might use ex_data
5327 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
5328 (see [openssl.org #212]).
5329 [Geoff Thorpe, Lutz Jaenicke]
5331 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
5332 length, instead of the encoding length to d2i_ASN1_OBJECT.
5335 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
5337 *) [In 0.9.6g-engine release:]
5338 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
5339 [Lynn Gazis <lgazis@rainbow.com>]
5341 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
5343 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
5344 and get fix the header length calculation.
5345 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
5346 Alon Kantor <alonk@checkpoint.com> (and others),
5349 *) Use proper error handling instead of 'assertions' in buffer
5350 overflow checks added in 0.9.6e. This prevents DoS (the
5351 assertions could call abort()).
5352 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
5354 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
5356 *) Add various sanity checks to asn1_get_length() to reject
5357 the ASN1 length bytes if they exceed sizeof(long), will appear
5358 negative or the content length exceeds the length of the
5360 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
5362 *) Fix cipher selection routines: ciphers without encryption had no flags
5363 for the cipher strength set and where therefore not handled correctly
5364 by the selection routines (PR #130).
5367 *) Fix EVP_dsa_sha macro.
5371 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
5372 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
5373 that was added in OpenSSL 0.9.6d.
5375 As the countermeasure turned out to be incompatible with some
5376 broken SSL implementations, the new option is part of SSL_OP_ALL.
5377 SSL_OP_ALL is usually employed when compatibility with weird SSL
5378 implementations is desired (e.g. '-bugs' option to 's_client' and
5379 's_server'), so the new option is automatically set in many
5383 *) Changes in security patch:
5385 Changes marked "(CHATS)" were sponsored by the Defense Advanced
5386 Research Projects Agency (DARPA) and Air Force Research Laboratory,
5387 Air Force Materiel Command, USAF, under agreement number
5390 *) Add various sanity checks to asn1_get_length() to reject
5391 the ASN1 length bytes if they exceed sizeof(long), will appear
5392 negative or the content length exceeds the length of the
5393 supplied buffer. (CVE-2002-0659)
5394 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
5396 *) Assertions for various potential buffer overflows, not known to
5398 [Ben Laurie (CHATS)]
5400 *) Various temporary buffers to hold ASCII versions of integers were
5401 too small for 64 bit platforms. (CVE-2002-0655)
5402 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
5404 *) Remote buffer overflow in SSL3 protocol - an attacker could
5405 supply an oversized session ID to a client. (CVE-2002-0656)
5406 [Ben Laurie (CHATS)]
5408 *) Remote buffer overflow in SSL2 protocol - an attacker could
5409 supply an oversized client master key. (CVE-2002-0656)
5410 [Ben Laurie (CHATS)]
5412 Changes between 0.9.6c and 0.9.6d [9 May 2002]
5414 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
5415 encoded as NULL) with id-dsa-with-sha1.
5416 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
5418 *) Check various X509_...() return values in apps/req.c.
5419 [Nils Larsch <nla@trustcenter.de>]
5421 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
5422 an end-of-file condition would erronously be flagged, when the CRLF
5423 was just at the end of a processed block. The bug was discovered when
5424 processing data through a buffering memory BIO handing the data to a
5425 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
5426 <ptsekov@syntrex.com> and Nedelcho Stanev.
5429 *) Implement a countermeasure against a vulnerability recently found
5430 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
5431 before application data chunks to avoid the use of known IVs
5432 with data potentially chosen by the attacker.
5435 *) Fix length checks in ssl3_get_client_hello().
5438 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
5439 to prevent ssl3_read_internal() from incorrectly assuming that
5440 ssl3_read_bytes() found application data while handshake
5441 processing was enabled when in fact s->s3->in_read_app_data was
5442 merely automatically cleared during the initial handshake.
5443 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
5445 *) Fix object definitions for Private and Enterprise: they were not
5446 recognized in their shortname (=lowercase) representation. Extend
5447 obj_dat.pl to issue an error when using undefined keywords instead
5448 of silently ignoring the problem (Svenning Sorensen
5449 <sss@sss.dnsalias.net>).
5452 *) Fix DH_generate_parameters() so that it works for 'non-standard'
5453 generators, i.e. generators other than 2 and 5. (Previously, the
5454 code did not properly initialise the 'add' and 'rem' values to
5455 BN_generate_prime().)
5457 In the new general case, we do not insist that 'generator' is
5458 actually a primitive root: This requirement is rather pointless;
5459 a generator of the order-q subgroup is just as good, if not
5463 *) Map new X509 verification errors to alerts. Discovered and submitted by
5464 Tom Wu <tom@arcot.com>.
5467 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
5468 returning non-zero before the data has been completely received
5469 when using non-blocking I/O.
5470 [Bodo Moeller; problem pointed out by John Hughes]
5472 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
5473 [Ben Laurie, Lutz Jaenicke]
5475 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
5476 Yoram Zahavi <YoramZ@gilian.com>).
5479 *) Add information about CygWin 1.3 and on, and preserve proper
5480 configuration for the versions before that.
5481 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
5483 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
5484 check whether we deal with a copy of a session and do not delete from
5485 the cache in this case. Problem reported by "Izhar Shoshani Levi"
5486 <izhar@checkpoint.com>.
5489 *) Do not store session data into the internal session cache, if it
5490 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
5491 flag is set). Proposed by Aslam <aslam@funk.com>.
5494 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
5498 *) [In 0.9.6d-engine release:]
5499 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
5500 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5502 *) Add the configuration target linux-s390x.
5503 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
5505 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
5506 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
5507 variable as an indication that a ClientHello message has been
5508 received. As the flag value will be lost between multiple
5509 invocations of ssl3_accept when using non-blocking I/O, the
5510 function may not be aware that a handshake has actually taken
5511 place, thus preventing a new session from being added to the
5514 To avoid this problem, we now set s->new_session to 2 instead of
5515 using a local variable.
5516 [Lutz Jaenicke, Bodo Moeller]
5518 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
5519 if the SSL_R_LENGTH_MISMATCH error is detected.
5520 [Geoff Thorpe, Bodo Moeller]
5522 *) New 'shared_ldflag' column in Configure platform table.
5525 *) Fix EVP_CIPHER_mode macro.
5526 ["Dan S. Camper" <dan@bti.net>]
5528 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
5529 type, we must throw them away by setting rr->length to 0.
5530 [D P Chang <dpc@qualys.com>]
5532 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
5534 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
5535 <Dominikus.Scherkl@biodata.com>. (The previous implementation
5536 worked incorrectly for those cases where range = 10..._2 and
5537 3*range is two bits longer than range.)
5540 *) Only add signing time to PKCS7 structures if it is not already
5544 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
5545 OBJ_ld_ce should be OBJ_id_ce.
5546 Also some ip-pda OIDs in crypto/objects/objects.txt were
5547 incorrect (cf. RFC 3039).
5548 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
5550 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
5551 returns early because it has nothing to do.
5552 [Andy Schneider <andy.schneider@bjss.co.uk>]
5554 *) [In 0.9.6c-engine release:]
5555 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
5556 [Andy Schneider <andy.schneider@bjss.co.uk>]
5558 *) [In 0.9.6c-engine release:]
5559 Add support for Cryptographic Appliance's keyserver technology.
5560 (Use engine 'keyclient')
5561 [Cryptographic Appliances and Geoff Thorpe]
5563 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
5564 is called via tools/c89.sh because arguments have to be
5565 rearranged (all '-L' options must appear before the first object
5567 [Richard Shapiro <rshapiro@abinitio.com>]
5569 *) [In 0.9.6c-engine release:]
5570 Add support for Broadcom crypto accelerator cards, backported
5572 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
5574 *) [In 0.9.6c-engine release:]
5575 Add support for SureWare crypto accelerator cards from
5576 Baltimore Technologies. (Use engine 'sureware')
5577 [Baltimore Technologies and Mark Cox]
5579 *) [In 0.9.6c-engine release:]
5580 Add support for crypto accelerator cards from Accelerated
5581 Encryption Processing, www.aep.ie. (Use engine 'aep')
5582 [AEP Inc. and Mark Cox]
5584 *) Add a configuration entry for gcc on UnixWare.
5585 [Gary Benson <gbenson@redhat.com>]
5587 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
5588 messages are stored in a single piece (fixed-length part and
5589 variable-length part combined) and fix various bugs found on the way.
5592 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
5593 instead. BIO_gethostbyname() does not know what timeouts are
5594 appropriate, so entries would stay in cache even when they have
5596 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
5598 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
5599 faced with a pathologically small ClientHello fragment that does
5600 not contain client_version: Instead of aborting with an error,
5601 simply choose the highest available protocol version (i.e.,
5602 TLS 1.0 unless it is disabled). In practice, ClientHello
5603 messages are never sent like this, but this change gives us
5604 strictly correct behaviour at least for TLS.
5607 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
5608 never resets s->method to s->ctx->method when called from within
5609 one of the SSL handshake functions.
5610 [Bodo Moeller; problem pointed out by Niko Baric]
5612 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
5613 (sent using the client's version number) if client_version is
5614 smaller than the protocol version in use. Also change
5615 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
5616 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
5617 the client will at least see that alert.
5620 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
5624 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
5625 client receives HelloRequest while in a handshake.
5626 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
5628 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
5629 should end in 'break', not 'goto end' which circuments various
5630 cleanups done in state SSL_ST_OK. But session related stuff
5631 must be disabled for SSL_ST_OK in the case that we just sent a
5634 Also avoid some overhead by not calling ssl_init_wbio_buffer()
5635 before just sending a HelloRequest.
5636 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
5638 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
5639 reveal whether illegal block cipher padding was found or a MAC
5640 verification error occured. (Neither SSLerr() codes nor alerts
5641 are directly visible to potential attackers, but the information
5642 may leak via logfiles.)
5644 Similar changes are not required for the SSL 2.0 implementation
5645 because the number of padding bytes is sent in clear for SSL 2.0,
5646 and the extra bytes are just ignored. However ssl/s2_pkt.c
5647 failed to verify that the purported number of padding bytes is in
5651 *) Add OpenUNIX-8 support including shared libraries
5652 (Boyd Lynn Gerber <gerberb@zenez.com>).
5655 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
5656 'wristwatch attack' using huge encoding parameters (cf.
5657 James H. Manger's CRYPTO 2001 paper). Note that the
5658 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
5659 encoding parameters and hence was not vulnerable.
5662 *) BN_sqr() bug fix.
5663 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
5665 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
5666 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
5667 followed by modular reduction.
5668 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
5670 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
5671 equivalent based on BN_pseudo_rand() instead of BN_rand().
5674 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
5675 This function was broken, as the check for a new client hello message
5676 to handle SGC did not allow these large messages.
5677 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
5680 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
5683 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
5684 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
5687 *) Rework the configuration and shared library support for Tru64 Unix.
5688 The configuration part makes use of modern compiler features and
5689 still retains old compiler behavior for those that run older versions
5690 of the OS. The shared library support part includes a variant that
5691 uses the RPATH feature, and is available through the special
5692 configuration target "alpha-cc-rpath", which will never be selected
5694 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
5696 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
5697 with the same message size as in ssl3_get_certificate_request().
5698 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
5699 messages might inadvertently be reject as too long.
5700 [Petr Lampa <lampa@fee.vutbr.cz>]
5702 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
5705 *) Modified SSL library such that the verify_callback that has been set
5706 specificly for an SSL object with SSL_set_verify() is actually being
5707 used. Before the change, a verify_callback set with this function was
5708 ignored and the verify_callback() set in the SSL_CTX at the time of
5709 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
5710 to allow the necessary settings.
5713 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
5714 explicitly to NULL, as at least on Solaris 8 this seems not always to be
5715 done automatically (in contradiction to the requirements of the C
5716 standard). This made problems when used from OpenSSH.
5719 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
5720 dh->length and always used
5722 BN_rand_range(priv_key, dh->p).
5724 BN_rand_range() is not necessary for Diffie-Hellman, and this
5725 specific range makes Diffie-Hellman unnecessarily inefficient if
5726 dh->length (recommended exponent length) is much smaller than the
5727 length of dh->p. We could use BN_rand_range() if the order of
5728 the subgroup was stored in the DH structure, but we only have
5733 BN_rand(priv_key, l, ...)
5735 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
5741 RSA_eay_public_encrypt
5742 RSA_eay_private_decrypt
5743 RSA_eay_private_encrypt (signing)
5744 RSA_eay_public_decrypt (signature verification)
5746 (default implementations for RSA_public_encrypt,
5747 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
5748 always reject numbers >= n.
5751 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
5752 to synchronize access to 'locking_thread'. This is necessary on
5753 systems where access to 'locking_thread' (an 'unsigned long'
5754 variable) is not atomic.
5757 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
5758 *before* setting the 'crypto_lock_rand' flag. The previous code had
5759 a race condition if 0 is a valid thread ID.
5760 [Travis Vitek <vitek@roguewave.com>]
5762 *) Add support for shared libraries under Irix.
5763 [Albert Chin-A-Young <china@thewrittenword.com>]
5765 *) Add configuration option to build on Linux on both big-endian and
5767 [Ralf Baechle <ralf@uni-koblenz.de>]
5769 *) Add the possibility to create shared libraries on HP-UX.
5772 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
5774 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
5775 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
5776 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
5777 PRNG state recovery was possible based on the output of
5778 one PRNG request appropriately sized to gain knowledge on
5779 'md' followed by enough consecutive 1-byte PRNG requests
5780 to traverse all of 'state'.
5782 1. When updating 'md_local' (the current thread's copy of 'md')
5783 during PRNG output generation, hash all of the previous
5784 'md_local' value, not just the half used for PRNG output.
5786 2. Make the number of bytes from 'state' included into the hash
5787 independent from the number of PRNG bytes requested.
5789 The first measure alone would be sufficient to avoid
5790 Markku-Juhani's attack. (Actually it had never occurred
5791 to me that the half of 'md_local' used for chaining was the
5792 half from which PRNG output bytes were taken -- I had always
5793 assumed that the secret half would be used.) The second
5794 measure makes sure that additional data from 'state' is never
5795 mixed into 'md_local' in small portions; this heuristically
5796 further strengthens the PRNG.
5799 *) Fix crypto/bn/asm/mips3.s.
5802 *) When only the key is given to "enc", the IV is undefined. Print out
5803 an error message in this case.
5806 *) Handle special case when X509_NAME is empty in X509 printing routines.
5809 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
5810 positive and less than q.
5813 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
5814 used: it isn't thread safe and the add_lock_callback should handle
5816 [Paul Rose <Paul.Rose@bridge.com>]
5818 *) Verify that incoming data obeys the block size in
5819 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
5823 [Ulf Möller, Bodo Möller]
5825 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
5826 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
5827 when fixing the server behaviour for backwards-compatible 'client
5828 hello' messages. (Note that the attack is impractical against
5829 SSL 3.0 and TLS 1.0 anyway because length and version checking
5830 means that the probability of guessing a valid ciphertext is
5831 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
5834 Before 0.9.5, the countermeasure (hide the error by generating a
5835 random 'decryption result') did not work properly because
5836 ERR_clear_error() was missing, meaning that SSL_get_error() would
5837 detect the supposedly ignored error.
5839 Both problems are now fixed.
5842 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
5843 (previously it was 1024).
5846 *) Fix for compatibility mode trust settings: ignore trust settings
5847 unless some valid trust or reject settings are present.
5850 *) Fix for blowfish EVP: its a variable length cipher.
5853 *) Fix various bugs related to DSA S/MIME verification. Handle missing
5854 parameters in DSA public key structures and return an error in the
5855 DSA routines if parameters are absent.
5858 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
5859 in the current directory if neither $RANDFILE nor $HOME was set.
5860 RAND_file_name() in 0.9.6a returned NULL in this case. This has
5861 caused some confusion to Windows users who haven't defined $HOME.
5862 Thus RAND_file_name() is changed again: e_os.h can define a
5863 DEFAULT_HOME, which will be used if $HOME is not set.
5864 For Windows, we use "C:"; on other platforms, we still require
5865 environment variables.
5867 *) Move 'if (!initialized) RAND_poll()' into regions protected by
5868 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
5869 having multiple threads call RAND_poll() concurrently.
5872 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
5873 combination of a flag and a thread ID variable.
5874 Otherwise while one thread is in ssleay_rand_bytes (which sets the
5875 flag), *other* threads can enter ssleay_add_bytes without obeying
5876 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
5877 that they do not hold after the first thread unsets add_do_not_lock).
5880 *) Change bctest again: '-x' expressions are not available in all
5884 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
5886 *) Fix a couple of memory leaks in PKCS7_dataDecode()
5887 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
5889 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
5890 the default extension for executables, if any. Also, make the perl
5891 scripts that use symlink() to test if it really exists and use "cp"
5892 if it doesn't. All this made OpenSSL compilable and installable in
5896 *) Fix for asn1_GetSequence() for indefinite length constructed data.
5897 If SEQUENCE is length is indefinite just set c->slen to the total
5898 amount of data available.
5899 [Steve Henson, reported by shige@FreeBSD.org]
5900 [This change does not apply to 0.9.7.]
5902 *) Change bctest to avoid here-documents inside command substitution
5903 (workaround for FreeBSD /bin/sh bug).
5904 For compatibility with Ultrix, avoid shell functions (introduced
5905 in the bctest version that searches along $PATH).
5908 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
5909 with des_encrypt() defined on some operating systems, like Solaris
5913 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
5914 On the Importance of Eliminating Errors in Cryptographic
5915 Computations, J. Cryptology 14 (2001) 2, 101-119,
5916 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
5919 *) MIPS assembler BIGNUM division bug fix.
5922 *) Disabled incorrect Alpha assembler code.
5925 *) Fix PKCS#7 decode routines so they correctly update the length
5926 after reading an EOC for the EXPLICIT tag.
5928 [This change does not apply to 0.9.7.]
5930 *) Fix bug in PKCS#12 key generation routines. This was triggered
5931 if a 3DES key was generated with a 0 initial byte. Include
5932 PKCS12_BROKEN_KEYGEN compilation option to retain the old
5933 (but broken) behaviour.
5936 *) Enhance bctest to search for a working bc along $PATH and print
5938 [Tim Rice <tim@multitalents.net> via Richard Levitte]
5940 *) Fix memory leaks in err.c: free err_data string if necessary;
5941 don't write to the wrong index in ERR_set_error_data.
5944 *) Implement ssl23_peek (analogous to ssl23_read), which previously
5948 *) Replace rdtsc with _emit statements for VC++ version 5.
5949 [Jeremy Cooper <jeremy@baymoo.org>]
5951 *) Make it possible to reuse SSLv2 sessions.
5954 *) In copy_email() check for >= 0 as a return value for
5955 X509_NAME_get_index_by_NID() since 0 is a valid index.
5956 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
5958 *) Avoid coredump with unsupported or invalid public keys by checking if
5959 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
5960 PKCS7_verify() fails with non detached data.
5963 *) Don't use getenv in library functions when run as setuid/setgid.
5964 New function OPENSSL_issetugid().
5967 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
5968 due to incorrect handling of multi-threading:
5970 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
5972 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
5974 3. Count how many times MemCheck_off() has been called so that
5975 nested use can be treated correctly. This also avoids
5976 inband-signalling in the previous code (which relied on the
5977 assumption that thread ID 0 is impossible).
5980 *) Add "-rand" option also to s_client and s_server.
5983 *) Fix CPU detection on Irix 6.x.
5984 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
5985 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
5987 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
5990 [This change does not apply to 0.9.7.]
5992 *) Use the cached encoding of an X509_NAME structure rather than
5993 copying it. This is apparently the reason for the libsafe "errors"
5994 but the code is actually correct.
5997 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
5998 Bleichenbacher's DSA attack.
5999 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
6000 to be set and top=0 forces the highest bit to be set; top=-1 is new
6001 and leaves the highest bit random.
6002 [Ulf Moeller, Bodo Moeller]
6004 *) In the NCONF_...-based implementations for CONF_... queries
6005 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
6006 a temporary CONF structure with the data component set to NULL
6007 (which gives segmentation faults in lh_retrieve).
6008 Instead, use NULL for the CONF pointer in CONF_get_string and
6009 CONF_get_number (which may use environment variables) and directly
6010 return NULL from CONF_get_section.
6013 *) Fix potential buffer overrun for EBCDIC.
6016 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
6017 keyUsage if basicConstraints absent for a CA.
6020 *) Make SMIME_write_PKCS7() write mail header values with a format that
6021 is more generally accepted (no spaces before the semicolon), since
6022 some programs can't parse those values properly otherwise. Also make
6023 sure BIO's that break lines after each write do not create invalid
6027 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
6028 macros previously used would not encode an empty SEQUENCE OF
6029 and break the signature.
6031 [This change does not apply to 0.9.7.]
6033 *) Zero the premaster secret after deriving the master secret in
6037 *) Add some EVP_add_digest_alias registrations (as found in
6038 OpenSSL_add_all_digests()) to SSL_library_init()
6039 aka OpenSSL_add_ssl_algorithms(). This provides improved
6040 compatibility with peers using X.509 certificates
6041 with unconventional AlgorithmIdentifier OIDs.
6044 *) Fix for Irix with NO_ASM.
6045 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
6047 *) ./config script fixes.
6048 [Ulf Moeller, Richard Levitte]
6050 *) Fix 'openssl passwd -1'.
6053 *) Change PKCS12_key_gen_asc() so it can cope with non null
6054 terminated strings whose length is passed in the passlen
6055 parameter, for example from PEM callbacks. This was done
6056 by adding an extra length parameter to asc2uni().
6057 [Steve Henson, reported by <oddissey@samsung.co.kr>]
6059 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
6060 call failed, free the DSA structure.
6063 *) Fix to uni2asc() to cope with zero length Unicode strings.
6064 These are present in some PKCS#12 files.
6067 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
6068 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
6069 when writing a 32767 byte record.
6070 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
6072 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
6073 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
6075 (RSA objects have a reference count access to which is protected
6076 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
6077 so they are meant to be shared between threads.)
6078 [Bodo Moeller, Geoff Thorpe; original patch submitted by
6079 "Reddie, Steven" <Steven.Reddie@ca.com>]
6081 *) Fix a deadlock in CRYPTO_mem_leaks().
6084 *) Use better test patterns in bntest.
6087 *) rand_win.c fix for Borland C.
6090 *) BN_rshift bugfix for n == 0.
6093 *) Add a 'bctest' script that checks for some known 'bc' bugs
6094 so that 'make test' does not abort just because 'bc' is broken.
6097 *) Store verify_result within SSL_SESSION also for client side to
6098 avoid potential security hole. (Re-used sessions on the client side
6099 always resulted in verify_result==X509_V_OK, not using the original
6100 result of the server certificate verification.)
6103 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
6104 SSL3_RT_APPLICATION_DATA, return 0.
6105 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
6109 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
6110 releases, have been re-implemented by renaming the previous
6111 implementations of ssl2_read and ssl3_read to ssl2_read_internal
6112 and ssl3_read_internal, respectively, and adding 'peek' parameters
6113 to them. The new ssl[23]_{read,peek} functions are calls to
6114 ssl[23]_read_internal with the 'peek' flag set appropriately.
6115 A 'peek' parameter has also been added to ssl3_read_bytes, which
6116 does the actual work for ssl3_read_internal.
6119 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
6120 the method-specific "init()" handler. Also clean up ex_data after
6121 calling the method-specific "finish()" handler. Previously, this was
6122 happening the other way round.
6125 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
6126 The previous value, 12, was not always sufficient for BN_mod_exp().
6129 *) Make sure that shared libraries get the internal name engine with
6130 the full version number and not just 0. This should mark the
6131 shared libraries as not backward compatible. Of course, this should
6132 be changed again when we can guarantee backward binary compatibility.
6135 *) Fix typo in get_cert_by_subject() in by_dir.c
6136 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
6138 *) Rework the system to generate shared libraries:
6140 - Make note of the expected extension for the shared libraries and
6141 if there is a need for symbolic links from for example libcrypto.so.0
6142 to libcrypto.so.0.9.7. There is extended info in Configure for
6145 - Make as few rebuilds of the shared libraries as possible.
6147 - Still avoid linking the OpenSSL programs with the shared libraries.
6149 - When installing, install the shared libraries separately from the
6153 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
6155 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
6156 and not in SSL_clear because the latter is also used by the
6157 accept/connect functions; previously, the settings made by
6158 SSL_set_read_ahead would be lost during the handshake.
6159 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
6161 *) Correct util/mkdef.pl to be selective about disabled algorithms.
6162 Previously, it would create entries for disableed algorithms no
6166 *) Added several new manual pages for SSL_* function.
6169 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
6171 *) In ssl23_get_client_hello, generate an error message when faced
6172 with an initial SSL 3.0/TLS record that is too small to contain the
6173 first two bytes of the ClientHello message, i.e. client_version.
6174 (Note that this is a pathologic case that probably has never happened
6175 in real life.) The previous approach was to use the version number
6176 from the record header as a substitute; but our protocol choice
6177 should not depend on that one because it is not authenticated
6178 by the Finished messages.
6181 *) More robust randomness gathering functions for Windows.
6182 [Jeffrey Altman <jaltman@columbia.edu>]
6184 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
6185 not set then we don't setup the error code for issuer check errors
6186 to avoid possibly overwriting other errors which the callback does
6187 handle. If an application does set the flag then we assume it knows
6188 what it is doing and can handle the new informational codes
6192 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
6193 a general "ANY" type, as such it should be able to decode anything
6194 including tagged types. However it didn't check the class so it would
6195 wrongly interpret tagged types in the same way as their universal
6196 counterpart and unknown types were just rejected. Changed so that the
6197 tagged and unknown types are handled in the same way as a SEQUENCE:
6198 that is the encoding is stored intact. There is also a new type
6199 "V_ASN1_OTHER" which is used when the class is not universal, in this
6200 case we have no idea what the actual type is so we just lump them all
6204 *) On VMS, stdout may very well lead to a file that is written to
6205 in a record-oriented fashion. That means that every write() will
6206 write a separate record, which will be read separately by the
6207 programs trying to read from it. This can be very confusing.
6209 The solution is to put a BIO filter in the way that will buffer
6210 text until a linefeed is reached, and then write everything a
6211 line at a time, so every record written will be an actual line,
6212 not chunks of lines and not (usually doesn't happen, but I've
6213 seen it once) several lines in one record. BIO_f_linebuffer() is
6216 Currently, it's a VMS-only method, because that's where it has
6217 been tested well enough.
6220 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
6221 it can return incorrect results.
6222 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
6223 but it was in 0.9.6-beta[12].)
6226 *) Disable the check for content being present when verifying detached
6227 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
6228 include zero length content when signing messages.
6231 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
6232 BIO_ctrl (for BIO pairs).
6235 *) Add DSO method for VMS.
6238 *) Bug fix: Montgomery multiplication could produce results with the
6242 *) Add RPM specification openssl.spec and modify it to build three
6243 packages. The default package contains applications, application
6244 documentation and run-time libraries. The devel package contains
6245 include files, static libraries and function documentation. The
6246 doc package contains the contents of the doc directory. The original
6247 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
6250 *) Add a large number of documentation files for many SSL routines.
6251 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
6253 *) Add a configuration entry for Sony News 4.
6254 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
6256 *) Don't set the two most significant bits to one when generating a
6257 random number < q in the DSA library.
6260 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
6261 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
6262 the underlying transport is blocking) if a handshake took place.
6263 (The default behaviour is needed by applications such as s_client
6264 and s_server that use select() to determine when to use SSL_read;
6265 but for applications that know in advance when to expect data, it
6266 just makes things more complicated.)
6269 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
6273 *) Add a few more EBCDIC conditionals that make `req' and `x509'
6274 work better on such systems.
6275 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
6277 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
6278 Update PKCS12_parse() so it copies the friendlyName and the
6279 keyid to the certificates aux info.
6282 *) Fix bug in PKCS7_verify() which caused an infinite loop
6283 if there was more than one signature.
6284 [Sven Uszpelkat <su@celocom.de>]
6286 *) Major change in util/mkdef.pl to include extra information
6287 about each symbol, as well as presentig variables as well
6288 as functions. This change means that there's n more need
6289 to rebuild the .num files when some algorithms are excluded.
6292 *) Allow the verify time to be set by an application,
6293 rather than always using the current time.
6296 *) Phase 2 verify code reorganisation. The certificate
6297 verify code now looks up an issuer certificate by a
6298 number of criteria: subject name, authority key id
6299 and key usage. It also verifies self signed certificates
6300 by the same criteria. The main comparison function is
6301 X509_check_issued() which performs these checks.
6303 Lot of changes were necessary in order to support this
6304 without completely rewriting the lookup code.
6306 Authority and subject key identifier are now cached.
6308 The LHASH 'certs' is X509_STORE has now been replaced
6309 by a STACK_OF(X509_OBJECT). This is mainly because an
6310 LHASH can't store or retrieve multiple objects with
6311 the same hash value.
6313 As a result various functions (which were all internal
6314 use only) have changed to handle the new X509_STORE
6315 structure. This will break anything that messed round
6316 with X509_STORE internally.
6318 The functions X509_STORE_add_cert() now checks for an
6319 exact match, rather than just subject name.
6321 The X509_STORE API doesn't directly support the retrieval
6322 of multiple certificates matching a given criteria, however
6323 this can be worked round by performing a lookup first
6324 (which will fill the cache with candidate certificates)
6325 and then examining the cache for matches. This is probably
6326 the best we can do without throwing out X509_LOOKUP
6327 entirely (maybe later...).
6329 The X509_VERIFY_CTX structure has been enhanced considerably.
6331 All certificate lookup operations now go via a get_issuer()
6332 callback. Although this currently uses an X509_STORE it
6333 can be replaced by custom lookups. This is a simple way
6334 to bypass the X509_STORE hackery necessary to make this
6335 work and makes it possible to use more efficient techniques
6336 in future. A very simple version which uses a simple
6337 STACK for its trusted certificate store is also provided
6338 using X509_STORE_CTX_trusted_stack().
6340 The verify_cb() and verify() callbacks now have equivalents
6341 in the X509_STORE_CTX structure.
6343 X509_STORE_CTX also has a 'flags' field which can be used
6344 to customise the verify behaviour.
6347 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
6348 excludes S/MIME capabilities.
6351 *) When a certificate request is read in keep a copy of the
6352 original encoding of the signed data and use it when outputing
6353 again. Signatures then use the original encoding rather than
6354 a decoded, encoded version which may cause problems if the
6355 request is improperly encoded.
6358 *) For consistency with other BIO_puts implementations, call
6359 buffer_write(b, ...) directly in buffer_puts instead of calling
6362 In BIO_puts, increment b->num_write as in BIO_write.
6363 [Peter.Sylvester@EdelWeb.fr]
6365 *) Fix BN_mul_word for the case where the word is 0. (We have to use
6366 BN_zero, we may not return a BIGNUM with an array consisting of
6370 *) Avoid calling abort() from within the library when problems are
6371 detected, except if preprocessor symbols have been defined
6372 (such as REF_CHECK, BN_DEBUG etc.).
6375 *) New openssl application 'rsautl'. This utility can be
6376 used for low level RSA operations. DER public key
6377 BIO/fp routines also added.
6380 *) New Configure entry and patches for compiling on QNX 4.
6381 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
6383 *) A demo state-machine implementation was sponsored by
6384 Nuron (http://www.nuron.com/) and is now available in
6385 demos/state_machine.
6388 *) New options added to the 'dgst' utility for signature
6389 generation and verification.
6392 *) Unrecognized PKCS#7 content types are now handled via a
6393 catch all ASN1_TYPE structure. This allows unsupported
6394 types to be stored as a "blob" and an application can
6395 encode and decode it manually.
6398 *) Fix various signed/unsigned issues to make a_strex.c
6400 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
6402 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
6403 length if passed a buffer. ASN1_INTEGER_to_BN failed
6404 if passed a NULL BN and its argument was negative.
6405 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
6407 *) Modification to PKCS#7 encoding routines to output definite
6408 length encoding. Since currently the whole structures are in
6409 memory there's not real point in using indefinite length
6410 constructed encoding. However if OpenSSL is compiled with
6411 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
6414 *) Added BIO_vprintf() and BIO_vsnprintf().
6417 *) Added more prefixes to parse for in the the strings written
6418 through a logging bio, to cover all the levels that are available
6419 through syslog. The prefixes are now:
6421 PANIC, EMERG, EMR => LOG_EMERG
6422 ALERT, ALR => LOG_ALERT
6423 CRIT, CRI => LOG_CRIT
6424 ERROR, ERR => LOG_ERR
6425 WARNING, WARN, WAR => LOG_WARNING
6426 NOTICE, NOTE, NOT => LOG_NOTICE
6427 INFO, INF => LOG_INFO
6428 DEBUG, DBG => LOG_DEBUG
6430 and as before, if none of those prefixes are present at the
6431 beginning of the string, LOG_ERR is chosen.
6433 On Win32, the LOG_* levels are mapped according to this:
6435 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
6436 LOG_WARNING => EVENTLOG_WARNING_TYPE
6437 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
6441 *) Made it possible to reconfigure with just the configuration
6442 argument "reconf" or "reconfigure". The command line arguments
6443 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
6444 and are retrieved from there when reconfiguring.
6448 [Assar Westerlund <assar@sics.se>, Richard Levitte]
6450 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
6453 *) The obj_dat.pl script was messing up the sorting of object
6454 names. The reason was that it compared the quoted version
6455 of strings as a result "OCSP" > "OCSP Signing" because
6456 " > SPACE. Changed script to store unquoted versions of
6457 names and add quotes on output. It was also omitting some
6458 names from the lookup table if they were given a default
6459 value (that is if SN is missing it is given the same
6460 value as LN and vice versa), these are now added on the
6461 grounds that if an object has a name we should be able to
6462 look it up. Finally added warning output when duplicate
6463 short or long names are found.
6466 *) Changes needed for Tandem NSK.
6467 [Scott Uroff <scott@xypro.com>]
6469 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
6470 RSA_padding_check_SSLv23(), special padding was never detected
6471 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
6472 version rollback attacks was not effective.
6474 In s23_clnt.c, don't use special rollback-attack detection padding
6475 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
6476 client; similarly, in s23_srvr.c, don't do the rollback check if
6477 SSL 2.0 is the only protocol enabled in the server.
6480 *) Make it possible to get hexdumps of unprintable data with 'openssl
6481 asn1parse'. By implication, the functions ASN1_parse_dump() and
6482 BIO_dump_indent() are added.
6485 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
6486 these print out strings and name structures based on various
6487 flags including RFC2253 support and proper handling of
6488 multibyte characters. Added options to the 'x509' utility
6489 to allow the various flags to be set.
6492 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
6493 Also change the functions X509_cmp_current_time() and
6494 X509_gmtime_adj() work with an ASN1_TIME structure,
6495 this will enable certificates using GeneralizedTime in validity
6496 dates to be checked.
6499 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
6500 negative public key encodings) on by default,
6501 NO_NEG_PUBKEY_BUG can be set to disable it.
6504 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
6505 content octets. An i2c_ASN1_OBJECT is unnecessary because
6506 the encoding can be trivially obtained from the structure.
6509 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
6510 not read locks (CRYPTO_r_[un]lock).
6513 *) A first attempt at creating official support for shared
6514 libraries through configuration. I've kept it so the
6515 default is static libraries only, and the OpenSSL programs
6516 are always statically linked for now, but there are
6517 preparations for dynamic linking in place.
6518 This has been tested on Linux and Tru64.
6521 *) Randomness polling function for Win9x, as described in:
6522 Peter Gutmann, Software Generation of Practically Strong
6526 *) Fix so PRNG is seeded in req if using an already existing
6530 *) New options to smime application. -inform and -outform
6531 allow alternative formats for the S/MIME message including
6532 PEM and DER. The -content option allows the content to be
6533 specified separately. This should allow things like Netscape
6534 form signing output easier to verify.
6537 *) Fix the ASN1 encoding of tags using the 'long form'.
6540 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
6541 STRING types. These convert content octets to and from the
6542 underlying type. The actual tag and length octets are
6543 already assumed to have been read in and checked. These
6544 are needed because all other string types have virtually
6545 identical handling apart from the tag. By having versions
6546 of the ASN1 functions that just operate on content octets
6547 IMPLICIT tagging can be handled properly. It also allows
6548 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
6549 and ASN1_INTEGER are identical apart from the tag.
6552 *) Change the handling of OID objects as follows:
6554 - New object identifiers are inserted in objects.txt, following
6555 the syntax given in objects.README.
6556 - objects.pl is used to process obj_mac.num and create a new
6558 - obj_dat.pl is used to create a new obj_dat.h, using the data in
6561 This is currently kind of a hack, and the perl code in objects.pl
6562 isn't very elegant, but it works as I intended. The simplest way
6563 to check that it worked correctly is to look in obj_dat.h and
6564 check the array nid_objs and make sure the objects haven't moved
6565 around (this is important!). Additions are OK, as well as
6566 consistent name changes.
6569 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
6572 *) Addition of the command line parameter '-rand file' to 'openssl req'.
6573 The given file adds to whatever has already been seeded into the
6574 random pool through the RANDFILE configuration file option or
6575 environment variable, or the default random state file.
6578 *) mkstack.pl now sorts each macro group into lexical order.
6579 Previously the output order depended on the order the files
6580 appeared in the directory, resulting in needless rewriting
6584 *) Patches to make OpenSSL compile under Win32 again. Mostly
6585 work arounds for the VC++ problem that it treats func() as
6586 func(void). Also stripped out the parts of mkdef.pl that
6587 added extra typesafe functions: these no longer exist.
6590 *) Reorganisation of the stack code. The macros are now all
6591 collected in safestack.h . Each macro is defined in terms of
6592 a "stack macro" of the form SKM_<name>(type, a, b). The
6593 DEBUG_SAFESTACK is now handled in terms of function casts,
6594 this has the advantage of retaining type safety without the
6595 use of additional functions. If DEBUG_SAFESTACK is not defined
6596 then the non typesafe macros are used instead. Also modified the
6597 mkstack.pl script to handle the new form. Needs testing to see
6598 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
6599 the default if no major problems. Similar behaviour for ASN1_SET_OF
6600 and PKCS12_STACK_OF.
6603 *) When some versions of IIS use the 'NET' form of private key the
6604 key derivation algorithm is different. Normally MD5(password) is
6605 used as a 128 bit RC4 key. In the modified case
6606 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
6607 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
6608 as the old Netscape_RSA functions except they have an additional
6609 'sgckey' parameter which uses the modified algorithm. Also added
6610 an -sgckey command line option to the rsa utility. Thanks to
6611 Adrian Peck <bertie@ncipher.com> for posting details of the modified
6612 algorithm to openssl-dev.
6615 *) The evp_local.h macros were using 'c.##kname' which resulted in
6616 invalid expansion on some systems (SCO 5.0.5 for example).
6617 Corrected to 'c.kname'.
6618 [Phillip Porch <root@theporch.com>]
6620 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
6621 a STACK of email addresses from a certificate or request, these look
6622 in the subject name and the subject alternative name extensions and
6623 omit any duplicate addresses.
6626 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
6627 This makes DSA verification about 2 % faster.
6630 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
6631 (meaning that now 2^5 values will be precomputed, which is only 4 KB
6632 plus overhead for 1024 bit moduli).
6633 This makes exponentiations about 0.5 % faster for 1024 bit
6634 exponents (as measured by "openssl speed rsa2048").
6637 *) Rename memory handling macros to avoid conflicts with other
6639 Malloc => OPENSSL_malloc
6640 Malloc_locked => OPENSSL_malloc_locked
6641 Realloc => OPENSSL_realloc
6642 Free => OPENSSL_free
6645 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
6646 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
6649 *) CygWin32 support.
6650 [John Jarvie <jjarvie@newsguy.com>]
6652 *) The type-safe stack code has been rejigged. It is now only compiled
6653 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
6654 by default all type-specific stack functions are "#define"d back to
6655 standard stack functions. This results in more streamlined output
6656 but retains the type-safety checking possibilities of the original
6660 *) The STACK code has been cleaned up, and certain type declarations
6661 that didn't make a lot of sense have been brought in line. This has
6662 also involved a cleanup of sorts in safestack.h to more correctly
6663 map type-safe stack functions onto their plain stack counterparts.
6664 This work has also resulted in a variety of "const"ifications of
6665 lots of the code, especially "_cmp" operations which should normally
6666 be prototyped with "const" parameters anyway.
6669 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
6670 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
6671 (The PRNG state consists of two parts, the large pool 'state' and 'md',
6672 where all of 'md' is used each time the PRNG is used, but 'state'
6673 is used only indexed by a cyclic counter. As entropy may not be
6674 well distributed from the beginning, 'md' is important as a
6675 chaining variable. However, the output function chains only half
6676 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
6677 all of 'md', and seeding with STATE_SIZE dummy bytes will result
6678 in all of 'state' being rewritten, with the new values depending
6679 on virtually all of 'md'. This overcomes the 80 bit limitation.)
6682 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
6683 the handshake is continued after ssl_verify_cert_chain();
6684 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
6685 can lead to 'unexplainable' connection aborts later.
6686 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
6688 *) Major EVP API cipher revision.
6689 Add hooks for extra EVP features. This allows various cipher
6690 parameters to be set in the EVP interface. Support added for variable
6691 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
6692 setting of RC2 and RC5 parameters.
6694 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
6697 Remove lots of duplicated code from the EVP library. For example *every*
6698 cipher init() function handles the 'iv' in the same way according to the
6699 cipher mode. They also all do nothing if the 'key' parameter is NULL and
6700 for CFB and OFB modes they zero ctx->num.
6702 New functionality allows removal of S/MIME code RC2 hack.
6704 Most of the routines have the same form and so can be declared in terms
6707 By shifting this to the top level EVP_CipherInit() it can be removed from
6708 all individual ciphers. If the cipher wants to handle IVs or keys
6709 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
6712 Change lots of functions like EVP_EncryptUpdate() to now return a
6713 value: although software versions of the algorithms cannot fail
6714 any installed hardware versions can.
6717 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
6718 this option is set, tolerate broken clients that send the negotiated
6719 protocol version number instead of the requested protocol version
6723 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
6724 i.e. non-zero for export ciphersuites, zero otherwise.
6725 Previous versions had this flag inverted, inconsistent with
6726 rsa_tmp_cb (..._TMP_RSA_CB).
6727 [Bodo Moeller; problem reported by Amit Chopra]
6729 *) Add missing DSA library text string. Work around for some IIS
6730 key files with invalid SEQUENCE encoding.
6733 *) Add a document (doc/standards.txt) that list all kinds of standards
6734 and so on that are implemented in OpenSSL.
6737 *) Enhance c_rehash script. Old version would mishandle certificates
6738 with the same subject name hash and wouldn't handle CRLs at all.
6739 Added -fingerprint option to crl utility, to support new c_rehash
6743 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
6746 *) Fix for SSL server purpose checking. Server checking was
6747 rejecting certificates which had extended key usage present
6748 but no ssl client purpose.
6749 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
6751 *) Make PKCS#12 code work with no password. The PKCS#12 spec
6752 is a little unclear about how a blank password is handled.
6753 Since the password in encoded as a BMPString with terminating
6754 double NULL a zero length password would end up as just the
6755 double NULL. However no password at all is different and is
6756 handled differently in the PKCS#12 key generation code. NS
6757 treats a blank password as zero length. MSIE treats it as no
6758 password on export: but it will try both on import. We now do
6759 the same: PKCS12_parse() tries zero length and no password if
6760 the password is set to "" or NULL (NULL is now a valid password:
6761 it wasn't before) as does the pkcs12 application.
6764 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
6765 perror when PEM_read_bio_X509_REQ fails, the error message must
6766 be obtained from the error queue.
6769 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
6770 it in ERR_remove_state if appropriate, and change ERR_get_state
6771 accordingly to avoid race conditions (this is necessary because
6772 thread_hash is no longer constant once set).
6775 *) Bugfix for linux-elf makefile.one.
6778 *) RSA_get_default_method() will now cause a default
6779 RSA_METHOD to be chosen if one doesn't exist already.
6780 Previously this was only set during a call to RSA_new()
6781 or RSA_new_method(NULL) meaning it was possible for
6782 RSA_get_default_method() to return NULL.
6785 *) Added native name translation to the existing DSO code
6786 that will convert (if the flag to do so is set) filenames
6787 that are sufficiently small and have no path information
6788 into a canonical native form. Eg. "blah" converted to
6789 "libblah.so" or "blah.dll" etc.
6792 *) New function ERR_error_string_n(e, buf, len) which is like
6793 ERR_error_string(e, buf), but writes at most 'len' bytes
6794 including the 0 terminator. For ERR_error_string_n, 'buf'
6796 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
6798 *) CONF library reworked to become more general. A new CONF
6799 configuration file reader "class" is implemented as well as a
6800 new functions (NCONF_*, for "New CONF") to handle it. The now
6801 old CONF_* functions are still there, but are reimplemented to
6802 work in terms of the new functions. Also, a set of functions
6803 to handle the internal storage of the configuration data is
6804 provided to make it easier to write new configuration file
6805 reader "classes" (I can definitely see something reading a
6806 configuration file in XML format, for example), called _CONF_*,
6807 or "the configuration storage API"...
6809 The new configuration file reading functions are:
6811 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
6812 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
6814 NCONF_default, NCONF_WIN32
6816 NCONF_dump_fp, NCONF_dump_bio
6818 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
6819 NCONF_new creates a new CONF object. This works in the same way
6820 as other interfaces in OpenSSL, like the BIO interface.
6821 NCONF_dump_* dump the internal storage of the configuration file,
6822 which is useful for debugging. All other functions take the same
6823 arguments as the old CONF_* functions wth the exception of the
6824 first that must be a `CONF *' instead of a `LHASH *'.
6826 To make it easer to use the new classes with the old CONF_* functions,
6827 the function CONF_set_default_method is provided.
6830 *) Add '-tls1' option to 'openssl ciphers', which was already
6831 mentioned in the documentation but had not been implemented.
6832 (This option is not yet really useful because even the additional
6833 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
6836 *) Initial DSO code added into libcrypto for letting OpenSSL (and
6837 OpenSSL-based applications) load shared libraries and bind to
6838 them in a portable way.
6839 [Geoff Thorpe, with contributions from Richard Levitte]
6841 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
6843 *) Make sure _lrotl and _lrotr are only used with MSVC.
6845 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
6846 (the default implementation of RAND_status).
6848 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
6849 to '-clrext' (= clear extensions), as intended and documented.
6850 [Bodo Moeller; inconsistency pointed out by Michael Attili
6853 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
6854 was larger than the MD block size.
6855 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
6857 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
6858 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
6859 using the passed key: if the passed key was a private key the result
6860 of X509_print(), for example, would be to print out all the private key
6864 *) des_quad_cksum() byte order bug fix.
6865 [Ulf Möller, using the problem description in krb4-0.9.7, where
6866 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
6868 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
6870 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
6872 *) For easily testing in shell scripts whether some command
6873 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
6874 returns with exit code 0 iff no command of the given name is available.
6875 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
6876 the output goes to stdout and nothing is printed to stderr.
6877 Additional arguments are always ignored.
6879 Since for each cipher there is a command of the same name,
6880 the 'no-cipher' compilation switches can be tested this way.
6882 ('openssl no-XXX' is not able to detect pseudo-commands such
6883 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
6886 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
6889 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
6890 is set; it will be thrown away anyway because each handshake creates
6892 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
6893 to parameters -- in previous versions (since OpenSSL 0.9.3) the
6894 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
6895 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
6898 *) New s_client option -ign_eof: EOF at stdin is ignored, and
6899 'Q' and 'R' lose their special meanings (quit/renegotiate).
6900 This is part of what -quiet does; unlike -quiet, -ign_eof
6901 does not suppress any output.
6904 *) Add compatibility options to the purpose and trust code. The
6905 purpose X509_PURPOSE_ANY is "any purpose" which automatically
6906 accepts a certificate or CA, this was the previous behaviour,
6907 with all the associated security issues.
6909 X509_TRUST_COMPAT is the old trust behaviour: only and
6910 automatically trust self signed roots in certificate store. A
6911 new trust setting X509_TRUST_DEFAULT is used to specify that
6912 a purpose has no associated trust setting and it should instead
6913 use the value in the default purpose.
6916 *) Fix the PKCS#8 DSA private key code so it decodes keys again
6917 and fix a memory leak.
6920 *) In util/mkerr.pl (which implements 'make errors'), preserve
6921 reason strings from the previous version of the .c file, as
6922 the default to have only downcase letters (and digits) in
6923 automatically generated reasons codes is not always appropriate.
6926 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
6927 using strerror. Previously, ERR_reason_error_string() returned
6928 library names as reason strings for SYSerr; but SYSerr is a special
6929 case where small numbers are errno values, not library numbers.
6932 *) Add '-dsaparam' option to 'openssl dhparam' application. This
6933 converts DSA parameters into DH parameters. (When creating parameters,
6934 DSA_generate_parameters is used.)
6937 *) Include 'length' (recommended exponent length) in C code generated
6938 by 'openssl dhparam -C'.
6941 *) The second argument to set_label in perlasm was already being used
6942 so couldn't be used as a "file scope" flag. Moved to third argument
6946 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
6947 instead of RAND_bytes for encryption IVs and salts.
6950 *) Include RAND_status() into RAND_METHOD instead of implementing
6951 it only for md_rand.c Otherwise replacing the PRNG by calling
6952 RAND_set_rand_method would be impossible.
6955 *) Don't let DSA_generate_key() enter an infinite loop if the random
6956 number generation fails.
6959 *) New 'rand' application for creating pseudo-random output.
6962 *) Added configuration support for Linux/IA64
6963 [Rolf Haberrecker <rolf@suse.de>]
6965 *) Assembler module support for Mingw32.
6968 *) Shared library support for HPUX (in shlib/).
6969 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
6971 *) Shared library support for Solaris gcc.
6972 [Lutz Behnke <behnke@trustcenter.de>]
6974 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
6976 *) PKCS7_encrypt() was adding text MIME headers twice because they
6977 were added manually and by SMIME_crlf_copy().
6980 *) In bntest.c don't call BN_rand with zero bits argument.
6981 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
6983 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
6984 case was implemented. This caused BN_div_recp() to fail occasionally.
6987 *) Add an optional second argument to the set_label() in the perl
6988 assembly language builder. If this argument exists and is set
6989 to 1 it signals that the assembler should use a symbol whose
6990 scope is the entire file, not just the current function. This
6991 is needed with MASM which uses the format label:: for this scope.
6992 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
6994 *) Change the ASN1 types so they are typedefs by default. Before
6995 almost all types were #define'd to ASN1_STRING which was causing
6996 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
7000 *) Change names of new functions to the new get1/get0 naming
7001 convention: After 'get1', the caller owns a reference count
7002 and has to call ..._free; 'get0' returns a pointer to some
7003 data structure without incrementing reference counters.
7004 (Some of the existing 'get' functions increment a reference
7005 counter, some don't.)
7006 Similarly, 'set1' and 'add1' functions increase reference
7007 counters or duplicate objects.
7010 *) Allow for the possibility of temp RSA key generation failure:
7011 the code used to assume it always worked and crashed on failure.
7014 *) Fix potential buffer overrun problem in BIO_printf().
7015 [Ulf Möller, using public domain code by Patrick Powell; problem
7016 pointed out by David Sacerdote <das33@cornell.edu>]
7018 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
7019 RAND_egd() and RAND_status(). In the command line application,
7020 the EGD socket can be specified like a seed file using RANDFILE
7024 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
7025 Some CAs (e.g. Verisign) distribute certificates in this form.
7028 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
7029 list to exclude them. This means that no special compilation option
7030 is needed to use anonymous DH: it just needs to be included in the
7034 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
7035 EVP_MD_type. The old functionality is available in a new macro called
7036 EVP_MD_md(). Change code that uses it and update docs.
7039 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
7040 where the 'void *' argument is replaced by a function pointer argument.
7041 Previously 'void *' was abused to point to functions, which works on
7042 many platforms, but is not correct. As these functions are usually
7043 called by macros defined in OpenSSL header files, most source code
7044 should work without changes.
7047 *) <openssl/opensslconf.h> (which is created by Configure) now contains
7048 sections with information on -D... compiler switches used for
7049 compiling the library so that applications can see them. To enable
7050 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
7051 must be defined. E.g.,
7052 #define OPENSSL_ALGORITHM_DEFINES
7053 #include <openssl/opensslconf.h>
7054 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
7055 [Richard Levitte, Ulf and Bodo Möller]
7057 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
7061 *) Change the 'other' type in certificate aux info to a STACK_OF
7062 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
7063 the required ASN1 format: arbitrary types determined by an OID.
7066 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
7067 argument to 'req'. This is not because the function is newer or
7068 better than others it just uses the work 'NEW' in the certificate
7069 request header lines. Some software needs this.
7072 *) Reorganise password command line arguments: now passwords can be
7073 obtained from various sources. Delete the PEM_cb function and make
7074 it the default behaviour: i.e. if the callback is NULL and the
7075 usrdata argument is not NULL interpret it as a null terminated pass
7076 phrase. If usrdata and the callback are NULL then the pass phrase
7077 is prompted for as usual.
7080 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
7081 the support is automatically enabled. The resulting binaries will
7082 autodetect the card and use it if present.
7083 [Ben Laurie and Compaq Inc.]
7085 *) Work around for Netscape hang bug. This sends certificate request
7086 and server done in one record. Since this is perfectly legal in the
7087 SSL/TLS protocol it isn't a "bug" option and is on by default. See
7088 the bugs/SSLv3 entry for more info.
7091 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
7094 *) Add -rand argument to smime and pkcs12 applications and read/write
7098 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
7101 *) Add command line password options to the remaining applications.
7104 *) Bug fix for BN_div_recp() for numerators with an even number of
7108 *) More tests in bntest.c, and changed test_bn output.
7111 *) ./config recognizes MacOS X now.
7114 *) Bug fix for BN_div() when the first words of num and divsor are
7115 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
7118 *) Add support for various broken PKCS#8 formats, and command line
7119 options to produce them.
7122 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
7123 get temporary BIGNUMs from a BN_CTX.
7126 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
7130 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
7131 include a #define from the old name to the new. The original intent
7132 was that statically linked binaries could for example just call
7133 SSLeay_add_all_ciphers() to just add ciphers to the table and not
7134 link with digests. This never worked becayse SSLeay_add_all_digests()
7135 and SSLeay_add_all_ciphers() were in the same source file so calling
7136 one would link with the other. They are now in separate source files.
7139 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
7142 *) Use a less unusual form of the Miller-Rabin primality test (it used
7143 a binary algorithm for exponentiation integrated into the Miller-Rabin
7144 loop, our standard modexp algorithms are faster).
7147 *) Support for the EBCDIC character set completed.
7148 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
7150 *) Source code cleanups: use const where appropriate, eliminate casts,
7151 use void * instead of char * in lhash.
7154 *) Bugfix: ssl3_send_server_key_exchange was not restartable
7155 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
7156 this the server could overwrite ephemeral keys that the client
7160 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
7161 using 50 iterations of the Rabin-Miller test.
7163 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
7164 iterations of the Rabin-Miller test as required by the appendix
7165 to FIPS PUB 186[-1]) instead of DSA_is_prime.
7166 As BN_is_prime_fasttest includes trial division, DSA parameter
7167 generation becomes much faster.
7169 This implies a change for the callback functions in DSA_is_prime
7170 and DSA_generate_parameters: The callback function is called once
7171 for each positive witness in the Rabin-Miller test, not just
7172 occasionally in the inner loop; and the parameters to the
7173 callback function now provide an iteration count for the outer
7174 loop rather than for the current invocation of the inner loop.
7175 DSA_generate_parameters additionally can call the callback
7176 function with an 'iteration count' of -1, meaning that a
7177 candidate has passed the trial division test (when q is generated
7178 from an application-provided seed, trial division is skipped).
7181 *) New function BN_is_prime_fasttest that optionally does trial
7182 division before starting the Rabin-Miller test and has
7183 an additional BN_CTX * argument (whereas BN_is_prime always
7184 has to allocate at least one BN_CTX).
7185 'callback(1, -1, cb_arg)' is called when a number has passed the
7186 trial division stage.
7189 *) Fix for bug in CRL encoding. The validity dates weren't being handled
7193 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
7196 *) New function BN_pseudo_rand().
7199 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
7200 bignum version of BN_from_montgomery() with the working code from
7201 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
7205 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
7206 made it impossible to use the same SSL_SESSION data structure in
7207 SSL2 clients in multiple threads.
7210 *) The return value of RAND_load_file() no longer counts bytes obtained
7211 by stat(). RAND_load_file(..., -1) is new and uses the complete file
7212 to seed the PRNG (previously an explicit byte count was required).
7213 [Ulf Möller, Bodo Möller]
7215 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
7216 used (char *) instead of (void *) and had casts all over the place.
7219 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
7222 *) Retain source code compatibility for BN_prime_checks macro:
7223 BN_is_prime(..., BN_prime_checks, ...) now uses
7224 BN_prime_checks_for_size to determine the appropriate number of
7225 Rabin-Miller iterations.
7228 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
7229 DH_CHECK_P_NOT_SAFE_PRIME.
7230 (Check if this is true? OpenPGP calls them "strong".)
7233 *) Merge the functionality of "dh" and "gendh" programs into a new program
7234 "dhparam". The old programs are retained for now but will handle DH keys
7235 (instead of parameters) in future.
7238 *) Make the ciphers, s_server and s_client programs check the return values
7239 when a new cipher list is set.
7242 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
7243 ciphers. Before when the 56bit ciphers were enabled the sorting was
7246 The syntax for the cipher sorting has been extended to support sorting by
7247 cipher-strength (using the strength_bits hard coded in the tables).
7248 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
7250 Fix a bug in the cipher-command parser: when supplying a cipher command
7251 string with an "undefined" symbol (neither command nor alphanumeric
7252 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
7253 an error is flagged.
7255 Due to the strength-sorting extension, the code of the
7256 ssl_create_cipher_list() function was completely rearranged. I hope that
7257 the readability was also increased :-)
7258 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7260 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
7261 for the first serial number and places 2 in the serial number file. This
7262 avoids problems when the root CA is created with serial number zero and
7263 the first user certificate has the same issuer name and serial number
7267 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
7268 the new code. Add documentation for this stuff.
7271 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
7272 X509_*() to X509at_*() on the grounds that they don't handle X509
7273 structures and behave in an analagous way to the X509v3 functions:
7274 they shouldn't be called directly but wrapper functions should be used
7277 So we also now have some wrapper functions that call the X509at functions
7278 when passed certificate requests. (TO DO: similar things can be done with
7279 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
7280 things. Some of these need some d2i or i2d and print functionality
7281 because they handle more complex structures.)
7284 *) Add missing #ifndefs that caused missing symbols when building libssl
7285 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
7286 NO_RSA in ssl/s2*.c.
7287 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
7289 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
7290 has a return value which indicates the quality of the random data
7291 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
7292 error queue. New function RAND_pseudo_bytes() generates output that is
7293 guaranteed to be unique but not unpredictable. RAND_add is like
7294 RAND_seed, but takes an extra argument for an entropy estimate
7295 (RAND_seed always assumes full entropy).
7298 *) Do more iterations of Rabin-Miller probable prime test (specifically,
7299 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
7300 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
7301 in crypto/bn/bn_prime.c for the complete table). This guarantees a
7302 false-positive rate of at most 2^-80 for random input.
7305 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
7308 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
7309 in the 0.9.5 release), this returns the chain
7310 from an X509_CTX structure with a dup of the stack and all
7311 the X509 reference counts upped: so the stack will exist
7312 after X509_CTX_cleanup() has been called. Modify pkcs12.c
7315 Also make SSL_SESSION_print() print out the verify return
7319 *) Add manpage for the pkcs12 command. Also change the default
7320 behaviour so MAC iteration counts are used unless the new
7321 -nomaciter option is used. This improves file security and
7322 only older versions of MSIE (4.0 for example) need it.
7325 *) Honor the no-xxx Configure options when creating .DEF files.
7328 *) Add PKCS#10 attributes to field table: challengePassword,
7329 unstructuredName and unstructuredAddress. These are taken from
7330 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
7331 international characters are used.
7333 More changes to X509_ATTRIBUTE code: allow the setting of types
7334 based on strings. Remove the 'loc' parameter when adding
7335 attributes because these will be a SET OF encoding which is sorted
7339 *) Initial changes to the 'req' utility to allow request generation
7340 automation. This will allow an application to just generate a template
7341 file containing all the field values and have req construct the
7344 Initial support for X509_ATTRIBUTE handling. Stacks of these are
7345 used all over the place including certificate requests and PKCS#7
7346 structures. They are currently handled manually where necessary with
7347 some primitive wrappers for PKCS#7. The new functions behave in a
7348 manner analogous to the X509 extension functions: they allow
7349 attributes to be looked up by NID and added.
7351 Later something similar to the X509V3 code would be desirable to
7352 automatically handle the encoding, decoding and printing of the
7353 more complex types. The string types like challengePassword can
7354 be handled by the string table functions.
7356 Also modified the multi byte string table handling. Now there is
7357 a 'global mask' which masks out certain types. The table itself
7358 can use the flag STABLE_NO_MASK to ignore the mask setting: this
7359 is useful when for example there is only one permissible type
7360 (as in countryName) and using the mask might result in no valid
7364 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
7365 SSL_get_peer_finished to allow applications to obtain the latest
7366 Finished messages sent to the peer or expected from the peer,
7367 respectively. (SSL_get_peer_finished is usually the Finished message
7368 actually received from the peer, otherwise the protocol will be aborted.)
7370 As the Finished message are message digests of the complete handshake
7371 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
7372 be used for external authentication procedures when the authentication
7373 provided by SSL/TLS is not desired or is not enough.
7376 *) Enhanced support for Alpha Linux is added. Now ./config checks if
7377 the host supports BWX extension and if Compaq C is present on the
7378 $PATH. Just exploiting of the BWX extension results in 20-30%
7379 performance kick for some algorithms, e.g. DES and RC4 to mention
7380 a couple. Compaq C in turn generates ~20% faster code for MD5 and
7384 *) Add support for MS "fast SGC". This is arguably a violation of the
7385 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
7386 weak crypto and after checking the certificate is SGC a second one
7387 with strong crypto. MS SGC stops the first handshake after receiving
7388 the server certificate message and sends a second client hello. Since
7389 a server will typically do all the time consuming operations before
7390 expecting any further messages from the client (server key exchange
7391 is the most expensive) there is little difference between the two.
7393 To get OpenSSL to support MS SGC we have to permit a second client
7394 hello message after we have sent server done. In addition we have to
7395 reset the MAC if we do get this second client hello.
7398 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
7399 if a DER encoded private key is RSA or DSA traditional format. Changed
7400 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
7401 format DER encoded private key. Newer code should use PKCS#8 format which
7402 has the key type encoded in the ASN1 structure. Added DER private key
7403 support to pkcs8 application.
7406 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
7407 ciphersuites has been selected (as required by the SSL 3/TLS 1
7408 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
7409 is set, we interpret this as a request to violate the specification
7410 (the worst that can happen is a handshake failure, and 'correct'
7411 behaviour would result in a handshake failure anyway).
7414 *) In SSL_CTX_add_session, take into account that there might be multiple
7415 SSL_SESSION structures with the same session ID (e.g. when two threads
7416 concurrently obtain them from an external cache).
7417 The internal cache can handle only one SSL_SESSION with a given ID,
7418 so if there's a conflict, we now throw out the old one to achieve
7422 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
7423 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
7424 some routines that use cipher OIDs: some ciphers do not have OIDs
7425 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
7429 *) Simplify the trust setting structure and code. Now we just have
7430 two sequences of OIDs for trusted and rejected settings. These will
7431 typically have values the same as the extended key usage extension
7432 and any application specific purposes.
7434 The trust checking code now has a default behaviour: it will just
7435 check for an object with the same NID as the passed id. Functions can
7436 be provided to override either the default behaviour or the behaviour
7437 for a given id. SSL client, server and email already have functions
7438 in place for compatibility: they check the NID and also return "trusted"
7439 if the certificate is self signed.
7442 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
7443 traditional format into an EVP_PKEY structure.
7446 *) Add a password callback function PEM_cb() which either prompts for
7447 a password if usr_data is NULL or otherwise assumes it is a null
7448 terminated password. Allow passwords to be passed on command line
7449 environment or config files in a few more utilities.
7452 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
7453 keys. Add some short names for PKCS#8 PBE algorithms and allow them
7454 to be specified on the command line for the pkcs8 and pkcs12 utilities.
7455 Update documentation.
7458 *) Support for ASN1 "NULL" type. This could be handled before by using
7459 ASN1_TYPE but there wasn't any function that would try to read a NULL
7460 and produce an error if it couldn't. For compatibility we also have
7461 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
7462 don't allocate anything because they don't need to.
7465 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
7467 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
7469 *) Rebuild of the memory allocation routines used by OpenSSL code and
7470 possibly others as well. The purpose is to make an interface that
7471 provide hooks so anyone can build a separate set of allocation and
7472 deallocation routines to be used by OpenSSL, for example memory
7473 pool implementations, or something else, which was previously hard
7474 since Malloc(), Realloc() and Free() were defined as macros having
7475 the values malloc, realloc and free, respectively (except for Win32
7476 compilations). The same is provided for memory debugging code.
7477 OpenSSL already comes with functionality to find memory leaks, but
7478 this gives people a chance to debug other memory problems.
7480 With these changes, a new set of functions and macros have appeared:
7482 CRYPTO_set_mem_debug_functions() [F]
7483 CRYPTO_get_mem_debug_functions() [F]
7484 CRYPTO_dbg_set_options() [F]
7485 CRYPTO_dbg_get_options() [F]
7486 CRYPTO_malloc_debug_init() [M]
7488 The memory debug functions are NULL by default, unless the library
7489 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
7490 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
7491 gives the standard debugging functions that come with OpenSSL) or
7492 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
7493 provided by the library user) must be used. When the standard
7494 debugging functions are used, CRYPTO_dbg_set_options can be used to
7495 request additional information:
7496 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
7497 the CRYPTO_MDEBUG_xxx macro when compiling the library.
7499 Also, things like CRYPTO_set_mem_functions will always give the
7500 expected result (the new set of functions is used for allocation
7501 and deallocation) at all times, regardless of platform and compiler
7504 To finish it up, some functions that were never use in any other
7505 way than through macros have a new API and new semantic:
7508 CRYPTO_dbg_realloc()
7511 All macros of value have retained their old syntax.
7512 [Richard Levitte and Bodo Moeller]
7514 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
7515 ordering of SMIMECapabilities wasn't in "strength order" and there
7516 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
7520 *) Some ASN1 types with illegal zero length encoding (INTEGER,
7521 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
7522 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
7524 *) Merge in my S/MIME library for OpenSSL. This provides a simple
7525 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
7526 functionality to handle multipart/signed properly) and a utility
7527 called 'smime' to call all this stuff. This is based on code I
7528 originally wrote for Celo who have kindly allowed it to be
7529 included in OpenSSL.
7532 *) Add variants des_set_key_checked and des_set_key_unchecked of
7533 des_set_key (aka des_key_sched). Global variable des_check_key
7534 decides which of these is called by des_set_key; this way
7535 des_check_key behaves as it always did, but applications and
7536 the library itself, which was buggy for des_check_key == 1,
7537 have a cleaner way to pick the version they need.
7540 *) New function PKCS12_newpass() which changes the password of a
7544 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
7545 dynamic mix. In both cases the ids can be used as an index into the
7546 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
7547 functions so they accept a list of the field values and the
7548 application doesn't need to directly manipulate the X509_TRUST
7552 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
7556 *) Modify the way the V3 extension code looks up extensions. This now
7557 works in a similar way to the object code: we have some "standard"
7558 extensions in a static table which is searched with OBJ_bsearch()
7559 and the application can add dynamic ones if needed. The file
7560 crypto/x509v3/ext_dat.h now has the info: this file needs to be
7561 updated whenever a new extension is added to the core code and kept
7562 in ext_nid order. There is a simple program 'tabtest.c' which checks
7563 this. New extensions are not added too often so this file can readily
7564 be maintained manually.
7566 There are two big advantages in doing things this way. The extensions
7567 can be looked up immediately and no longer need to be "added" using
7568 X509V3_add_standard_extensions(): this function now does nothing.
7569 [Side note: I get *lots* of email saying the extension code doesn't
7570 work because people forget to call this function]
7571 Also no dynamic allocation is done unless new extensions are added:
7572 so if we don't add custom extensions there is no need to call
7573 X509V3_EXT_cleanup().
7576 *) Modify enc utility's salting as follows: make salting the default. Add a
7577 magic header, so unsalted files fail gracefully instead of just decrypting
7578 to garbage. This is because not salting is a big security hole, so people
7579 should be discouraged from doing it.
7582 *) Fixes and enhancements to the 'x509' utility. It allowed a message
7583 digest to be passed on the command line but it only used this
7584 parameter when signing a certificate. Modified so all relevant
7585 operations are affected by the digest parameter including the
7586 -fingerprint and -x509toreq options. Also -x509toreq choked if a
7587 DSA key was used because it didn't fix the digest.
7590 *) Initial certificate chain verify code. Currently tests the untrusted
7591 certificates for consistency with the verify purpose (which is set
7592 when the X509_STORE_CTX structure is set up) and checks the pathlength.
7594 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
7595 this is because it will reject chains with invalid extensions whereas
7596 every previous version of OpenSSL and SSLeay made no checks at all.
7598 Trust code: checks the root CA for the relevant trust settings. Trust
7599 settings have an initial value consistent with the verify purpose: e.g.
7600 if the verify purpose is for SSL client use it expects the CA to be
7601 trusted for SSL client use. However the default value can be changed to
7602 permit custom trust settings: one example of this would be to only trust
7603 certificates from a specific "secure" set of CAs.
7605 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
7606 which should be used for version portability: especially since the
7607 verify structure is likely to change more often now.
7609 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
7610 to set them. If not set then assume SSL clients will verify SSL servers
7613 Two new options to the verify program: -untrusted allows a set of
7614 untrusted certificates to be passed in and -purpose which sets the
7615 intended purpose of the certificate. If a purpose is set then the
7616 new chain verify code is used to check extension consistency.
7619 *) Support for the authority information access extension.
7622 *) Modify RSA and DSA PEM read routines to transparently handle
7623 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
7624 public keys in a format compatible with certificate
7625 SubjectPublicKeyInfo structures. Unfortunately there were already
7626 functions called *_PublicKey_* which used various odd formats so
7627 these are retained for compatibility: however the DSA variants were
7628 never in a public release so they have been deleted. Changed dsa/rsa
7629 utilities to handle the new format: note no releases ever handled public
7630 keys so we should be OK.
7632 The primary motivation for this change is to avoid the same fiasco
7633 that dogs private keys: there are several incompatible private key
7634 formats some of which are standard and some OpenSSL specific and
7635 require various evil hacks to allow partial transparent handling and
7636 even then it doesn't work with DER formats. Given the option anything
7637 other than PKCS#8 should be dumped: but the other formats have to
7638 stay in the name of compatibility.
7640 With public keys and the benefit of hindsight one standard format
7641 is used which works with EVP_PKEY, RSA or DSA structures: though
7642 it clearly returns an error if you try to read the wrong kind of key.
7644 Added a -pubkey option to the 'x509' utility to output the public key.
7645 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
7646 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
7647 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
7648 that do the same as the EVP_PKEY_assign_*() except they up the
7649 reference count of the added key (they don't "swallow" the
7653 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
7654 CRLs would fail if the file contained no certificates or no CRLs:
7655 added a new function to read in both types and return the number
7656 read: this means that if none are read it will be an error. The
7657 DER versions of the certificate and CRL reader would always fail
7658 because it isn't possible to mix certificates and CRLs in DER format
7659 without choking one or the other routine. Changed this to just read
7660 a certificate: this is the best we can do. Also modified the code
7661 in apps/verify.c to take notice of return codes: it was previously
7662 attempting to read in certificates from NULL pointers and ignoring
7663 any errors: this is one reason why the cert and CRL reader seemed
7664 to work. It doesn't check return codes from the default certificate
7665 routines: these may well fail if the certificates aren't installed.
7668 *) Code to support otherName option in GeneralName.
7671 *) First update to verify code. Change the verify utility
7672 so it warns if it is passed a self signed certificate:
7673 for consistency with the normal behaviour. X509_verify
7674 has been modified to it will now verify a self signed
7675 certificate if *exactly* the same certificate appears
7676 in the store: it was previously impossible to trust a
7677 single self signed certificate. This means that:
7678 openssl verify ss.pem
7679 now gives a warning about a self signed certificate but
7680 openssl verify -CAfile ss.pem ss.pem
7684 *) For servers, store verify_result in SSL_SESSION data structure
7685 (and add it to external session representation).
7686 This is needed when client certificate verifications fails,
7687 but an application-provided verification callback (set by
7688 SSL_CTX_set_cert_verify_callback) allows accepting the session
7689 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
7690 but returns 1): When the session is reused, we have to set
7691 ssl->verify_result to the appropriate error code to avoid
7693 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
7695 *) Fix a bug in the new PKCS#7 code: it didn't consider the
7696 case in PKCS7_dataInit() where the signed PKCS7 structure
7697 didn't contain any existing data because it was being created.
7698 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
7700 *) Add a salt to the key derivation routines in enc.c. This
7701 forms the first 8 bytes of the encrypted file. Also add a
7702 -S option to allow a salt to be input on the command line.
7705 *) New function X509_cmp(). Oddly enough there wasn't a function
7706 to compare two certificates. We do this by working out the SHA1
7707 hash and comparing that. X509_cmp() will be needed by the trust
7711 *) SSL_get1_session() is like SSL_get_session(), but increments
7712 the reference count in the SSL_SESSION returned.
7713 [Geoff Thorpe <geoff@eu.c2.net>]
7715 *) Fix for 'req': it was adding a null to request attributes.
7716 Also change the X509_LOOKUP and X509_INFO code to handle
7717 certificate auxiliary information.
7720 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
7724 *) Add the possibility to add extra information to the memory leak
7725 detecting output, to form tracebacks, showing from where each
7726 allocation was originated: CRYPTO_push_info("constant string") adds
7727 the string plus current file name and line number to a per-thread
7728 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
7729 is like calling CYRPTO_pop_info() until the stack is empty.
7730 Also updated memory leak detection code to be multi-thread-safe.
7733 *) Add options -text and -noout to pkcs7 utility and delete the
7734 encryption options which never did anything. Update docs.
7737 *) Add options to some of the utilities to allow the pass phrase
7738 to be included on either the command line (not recommended on
7739 OSes like Unix) or read from the environment. Update the
7740 manpages and fix a few bugs.
7743 *) Add a few manpages for some of the openssl commands.
7746 *) Fix the -revoke option in ca. It was freeing up memory twice,
7747 leaking and not finding already revoked certificates.
7750 *) Extensive changes to support certificate auxiliary information.
7751 This involves the use of X509_CERT_AUX structure and X509_AUX
7752 functions. An X509_AUX function such as PEM_read_X509_AUX()
7753 can still read in a certificate file in the usual way but it
7754 will also read in any additional "auxiliary information". By
7755 doing things this way a fair degree of compatibility can be
7756 retained: existing certificates can have this information added
7757 using the new 'x509' options.
7759 Current auxiliary information includes an "alias" and some trust
7760 settings. The trust settings will ultimately be used in enhanced
7761 certificate chain verification routines: currently a certificate
7762 can only be trusted if it is self signed and then it is trusted
7766 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
7767 The problem was that one of the replacement routines had not been working
7768 since SSLeay releases. For now the offending routine has been replaced
7769 with non-optimised assembler. Even so, this now gives around 95%
7770 performance improvement for 1024 bit RSA signs.
7773 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
7774 handling. Most clients have the effective key size in bits equal to
7775 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
7776 A few however don't do this and instead use the size of the decrypted key
7777 to determine the RC2 key length and the AlgorithmIdentifier to determine
7778 the effective key length. In this case the effective key length can still
7779 be 40 bits but the key length can be 168 bits for example. This is fixed
7780 by manually forcing an RC2 key into the EVP_PKEY structure because the
7781 EVP code can't currently handle unusual RC2 key sizes: it always assumes
7782 the key length and effective key length are equal.
7785 *) Add a bunch of functions that should simplify the creation of
7786 X509_NAME structures. Now you should be able to do:
7787 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
7788 and have it automatically work out the correct field type and fill in
7789 the structures. The more adventurous can try:
7790 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
7791 and it will (hopefully) work out the correct multibyte encoding.
7794 *) Change the 'req' utility to use the new field handling and multibyte
7795 copy routines. Before the DN field creation was handled in an ad hoc
7796 way in req, ca, and x509 which was rather broken and didn't support
7797 BMPStrings or UTF8Strings. Since some software doesn't implement
7798 BMPStrings or UTF8Strings yet, they can be enabled using the config file
7799 using the dirstring_type option. See the new comment in the default
7800 openssl.cnf for more info.
7803 *) Make crypto/rand/md_rand.c more robust:
7804 - Assure unique random numbers after fork().
7805 - Make sure that concurrent threads access the global counter and
7806 md serializably so that we never lose entropy in them
7807 or use exactly the same state in multiple threads.
7808 Access to the large state is not always serializable because
7809 the additional locking could be a performance killer, and
7810 md should be large enough anyway.
7813 *) New file apps/app_rand.c with commonly needed functionality
7814 for handling the random seed file.
7816 Use the random seed file in some applications that previously did not:
7818 dsaparam -genkey (which also ignored its '-rand' option),
7821 x509 (when signing).
7822 Except on systems with /dev/urandom, it is crucial to have a random
7823 seed file at least for key creation, DSA signing, and for DH exchanges;
7824 for RSA signatures we could do without one.
7826 gendh and gendsa (unlike genrsa) used to read only the first byte
7827 of each file listed in the '-rand' option. The function as previously
7828 found in genrsa is now in app_rand.c and is used by all programs
7829 that support '-rand'.
7832 *) In RAND_write_file, use mode 0600 for creating files;
7833 don't just chmod when it may be too late.
7836 *) Report an error from X509_STORE_load_locations
7837 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
7840 *) New function ASN1_mbstring_copy() this copies a string in either
7841 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
7842 into an ASN1_STRING type. A mask of permissible types is passed
7843 and it chooses the "minimal" type to use or an error if not type
7847 *) Add function equivalents to the various macros in asn1.h. The old
7848 macros are retained with an M_ prefix. Code inside the library can
7849 use the M_ macros. External code (including the openssl utility)
7850 should *NOT* in order to be "shared library friendly".
7853 *) Add various functions that can check a certificate's extensions
7854 to see if it usable for various purposes such as SSL client,
7855 server or S/MIME and CAs of these types. This is currently
7856 VERY EXPERIMENTAL but will ultimately be used for certificate chain
7857 verification. Also added a -purpose flag to x509 utility to
7858 print out all the purposes.
7861 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
7865 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
7866 for, obtain and decode and extension and obtain its critical flag.
7867 This allows all the necessary extension code to be handled in a
7868 single function call.
7871 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
7872 platforms. See crypto/rc4/rc4_enc.c for further details.
7875 *) New -noout option to asn1parse. This causes no output to be produced
7876 its main use is when combined with -strparse and -out to extract data
7877 from a file (which may not be in ASN.1 format).
7880 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
7881 when producing the local key id.
7882 [Richard Levitte <levitte@stacken.kth.se>]
7884 *) New option -dhparam in s_server. This allows a DH parameter file to be
7885 stated explicitly. If it is not stated then it tries the first server
7886 certificate file. The previous behaviour hard coded the filename
7890 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
7891 a public key to be input or output. For example:
7892 openssl rsa -in key.pem -pubout -out pubkey.pem
7893 Also added necessary DSA public key functions to handle this.
7896 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
7897 in the message. This was handled by allowing
7898 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
7899 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
7901 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
7902 to the end of the strings whereas this didn't. This would cause problems
7903 if strings read with d2i_ASN1_bytes() were later modified.
7904 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
7906 *) Fix for base64 decode bug. When a base64 bio reads only one line of
7907 data and it contains EOF it will end up returning an error. This is
7908 caused by input 46 bytes long. The cause is due to the way base64
7909 BIOs find the start of base64 encoded data. They do this by trying a
7910 trial decode on each line until they find one that works. When they
7911 do a flag is set and it starts again knowing it can pass all the
7912 data directly through the decoder. Unfortunately it doesn't reset
7913 the context it uses. This means that if EOF is reached an attempt
7914 is made to pass two EOFs through the context and this causes the
7915 resulting error. This can also cause other problems as well. As is
7916 usual with these problems it takes *ages* to find and the fix is
7917 trivial: move one line.
7918 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
7920 *) Ugly workaround to get s_client and s_server working under Windows. The
7921 old code wouldn't work because it needed to select() on sockets and the
7922 tty (for keypresses and to see if data could be written). Win32 only
7923 supports select() on sockets so we select() with a 1s timeout on the
7924 sockets and then see if any characters are waiting to be read, if none
7925 are present then we retry, we also assume we can always write data to
7926 the tty. This isn't nice because the code then blocks until we've
7927 received a complete line of data and it is effectively polling the
7928 keyboard at 1s intervals: however it's quite a bit better than not
7929 working at all :-) A dedicated Windows application might handle this
7930 with an event loop for example.
7933 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
7934 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
7935 will be called when RSA_sign() and RSA_verify() are used. This is useful
7936 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
7937 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
7938 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
7939 This necessitated the support of an extra signature type NID_md5_sha1
7940 for SSL signatures and modifications to the SSL library to use it instead
7941 of calling RSA_public_decrypt() and RSA_private_encrypt().
7944 *) Add new -verify -CAfile and -CApath options to the crl program, these
7945 will lookup a CRL issuers certificate and verify the signature in a
7946 similar way to the verify program. Tidy up the crl program so it
7947 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
7948 less strict. It will now permit CRL extensions even if it is not
7949 a V2 CRL: this will allow it to tolerate some broken CRLs.
7952 *) Initialize all non-automatic variables each time one of the openssl
7953 sub-programs is started (this is necessary as they may be started
7954 multiple times from the "OpenSSL>" prompt).
7955 [Lennart Bang, Bodo Moeller]
7957 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
7958 removing all other RSA functionality (this is what NO_RSA does). This
7959 is so (for example) those in the US can disable those operations covered
7960 by the RSA patent while allowing storage and parsing of RSA keys and RSA
7964 *) Non-copying interface to BIO pairs.
7965 (still largely untested)
7968 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
7969 ASCII string. This was handled independently in various places before.
7972 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
7973 UTF8 strings a character at a time.
7976 *) Use client_version from client hello to select the protocol
7977 (s23_srvr.c) and for RSA client key exchange verification
7978 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
7981 *) Add various utility functions to handle SPKACs, these were previously
7982 handled by poking round in the structure internals. Added new function
7983 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
7984 print, verify and generate SPKACs. Based on an original idea from
7985 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
7988 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
7991 *) Allow the config file extension section to be overwritten on the
7992 command line. Based on an original idea from Massimiliano Pala
7993 <madwolf@comune.modena.it>. The new option is called -extensions
7994 and can be applied to ca, req and x509. Also -reqexts to override
7995 the request extensions in req and -crlexts to override the crl extensions
7999 *) Add new feature to the SPKAC handling in ca. Now you can include
8000 the same field multiple times by preceding it by "XXXX." for example:
8003 this is the same syntax as used in the req config file.
8006 *) Allow certificate extensions to be added to certificate requests. These
8007 are specified in a 'req_extensions' option of the req section of the
8008 config file. They can be printed out with the -text option to req but
8009 are otherwise ignored at present.
8012 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
8013 data read consists of only the final block it would not decrypted because
8014 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
8015 A misplaced 'break' also meant the decrypted final block might not be
8016 copied until the next read.
8019 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
8020 a few extra parameters to the DH structure: these will be useful if
8021 for example we want the value of 'q' or implement X9.42 DH.
8024 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
8025 provides hooks that allow the default DSA functions or functions on a
8026 "per key" basis to be replaced. This allows hardware acceleration and
8027 hardware key storage to be handled without major modification to the
8028 library. Also added low level modexp hooks and CRYPTO_EX structure and
8029 associated functions.
8032 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
8033 as "read only": it can't be written to and the buffer it points to will
8034 not be freed. Reading from a read only BIO is much more efficient than
8035 a normal memory BIO. This was added because there are several times when
8036 an area of memory needs to be read from a BIO. The previous method was
8037 to create a memory BIO and write the data to it, this results in two
8038 copies of the data and an O(n^2) reading algorithm. There is a new
8039 function BIO_new_mem_buf() which creates a read only memory BIO from
8040 an area of memory. Also modified the PKCS#7 routines to use read only
8044 *) Bugfix: ssl23_get_client_hello did not work properly when called in
8045 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
8046 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
8047 but a retry condition occured while trying to read the rest.
8050 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
8051 NID_pkcs7_encrypted by default: this was wrong since this should almost
8052 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
8053 the encrypted data type: this is a more sensible place to put it and it
8054 allows the PKCS#12 code to be tidied up that duplicated this
8058 *) Changed obj_dat.pl script so it takes its input and output files on
8059 the command line. This should avoid shell escape redirection problems
8063 *) Initial support for certificate extension requests, these are included
8064 in things like Xenroll certificate requests. Included functions to allow
8065 extensions to be obtained and added.
8068 *) -crlf option to s_client and s_server for sending newlines as
8069 CRLF (as required by many protocols).
8072 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
8074 *) Install libRSAglue.a when OpenSSL is built with RSAref.
8075 [Ralf S. Engelschall]
8077 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
8078 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
8080 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
8084 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
8085 DH parameters/keys (q is lost during that conversion, but the resulting
8086 DH parameters contain its length).
8088 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
8089 much faster than DH_generate_parameters (which creates parameters
8090 where p = 2*q + 1), and also the smaller q makes DH computations
8091 much more efficient (160-bit exponentiation instead of 1024-bit
8092 exponentiation); so this provides a convenient way to support DHE
8093 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
8094 utter importance to use
8095 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
8097 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
8098 when such DH parameters are used, because otherwise small subgroup
8099 attacks may become possible!
8102 *) Avoid memory leak in i2d_DHparams.
8105 *) Allow the -k option to be used more than once in the enc program:
8106 this allows the same encrypted message to be read by multiple recipients.
8109 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
8110 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
8111 it will always use the numerical form of the OID, even if it has a short
8115 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
8116 method only got called if p,q,dmp1,dmq1,iqmp components were present,
8117 otherwise bn_mod_exp was called. In the case of hardware keys for example
8118 no private key components need be present and it might store extra data
8119 in the RSA structure, which cannot be accessed from bn_mod_exp.
8120 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
8121 private key operations.
8124 *) Added support for SPARC Linux.
8127 *) pem_password_cb function type incompatibly changed from
8128 typedef int pem_password_cb(char *buf, int size, int rwflag);
8130 ....(char *buf, int size, int rwflag, void *userdata);
8131 so that applications can pass data to their callbacks:
8132 The PEM[_ASN1]_{read,write}... functions and macros now take an
8133 additional void * argument, which is just handed through whenever
8134 the password callback is called.
8135 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
8137 New function SSL_CTX_set_default_passwd_cb_userdata.
8139 Compatibility note: As many C implementations push function arguments
8140 onto the stack in reverse order, the new library version is likely to
8141 interoperate with programs that have been compiled with the old
8142 pem_password_cb definition (PEM_whatever takes some data that
8143 happens to be on the stack as its last argument, and the callback
8144 just ignores this garbage); but there is no guarantee whatsoever that
8147 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
8148 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
8149 problems not only on Windows, but also on some Unix platforms.
8150 To avoid problematic command lines, these definitions are now in an
8151 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
8152 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
8155 *) MIPS III/IV assembler module is reimplemented.
8158 *) More DES library cleanups: remove references to srand/rand and
8159 delete an unused file.
8162 *) Add support for the the free Netwide assembler (NASM) under Win32,
8163 since not many people have MASM (ml) and it can be hard to obtain.
8164 This is currently experimental but it seems to work OK and pass all
8165 the tests. Check out INSTALL.W32 for info.
8168 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
8169 without temporary keys kept an extra copy of the server key,
8170 and connections with temporary keys did not free everything in case
8174 *) New function RSA_check_key and new openssl rsa option -check
8175 for verifying the consistency of RSA keys.
8176 [Ulf Moeller, Bodo Moeller]
8178 *) Various changes to make Win32 compile work:
8179 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
8180 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
8181 comparison" warnings.
8182 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
8185 *) Add a debugging option to PKCS#5 v2 key generation function: when
8186 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
8187 derived keys are printed to stderr.
8190 *) Copy the flags in ASN1_STRING_dup().
8191 [Roman E. Pavlov <pre@mo.msk.ru>]
8193 *) The x509 application mishandled signing requests containing DSA
8194 keys when the signing key was also DSA and the parameters didn't match.
8196 It was supposed to omit the parameters when they matched the signing key:
8197 the verifying software was then supposed to automatically use the CA's
8198 parameters if they were absent from the end user certificate.
8200 Omitting parameters is no longer recommended. The test was also
8201 the wrong way round! This was probably due to unusual behaviour in
8202 EVP_cmp_parameters() which returns 1 if the parameters match.
8203 This meant that parameters were omitted when they *didn't* match and
8204 the certificate was useless. Certificates signed with 'ca' didn't have
8206 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
8208 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
8209 The interface is as follows:
8210 Applications can use
8211 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
8212 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
8213 "off" is now the default.
8214 The library internally uses
8215 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
8216 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
8217 to disable memory-checking temporarily.
8219 Some inconsistent states that previously were possible (and were
8220 even the default) are now avoided.
8222 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
8223 with each memory chunk allocated; this is occasionally more helpful
8224 than just having a counter.
8226 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
8228 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
8232 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
8233 which largely parallels "options", but is for changing API behaviour,
8234 whereas "options" are about protocol behaviour.
8235 Initial "mode" flags are:
8237 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
8238 a single record has been written.
8239 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
8240 retries use the same buffer location.
8241 (But all of the contents must be
8245 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
8248 *) Fix problems with no-hmac etc.
8249 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
8251 *) New functions RSA_get_default_method(), RSA_set_method() and
8252 RSA_get_method(). These allows replacement of RSA_METHODs without having
8253 to mess around with the internals of an RSA structure.
8256 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
8257 Also really enable memory leak checks in openssl.c and in some
8259 [Chad C. Mulligan, Bodo Moeller]
8261 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
8262 up the length of negative integers. This has now been simplified to just
8263 store the length when it is first determined and use it later, rather
8264 than trying to keep track of where data is copied and updating it to
8266 [Steve Henson, reported by Brien Wheeler
8267 <bwheeler@authentica-security.com>]
8269 *) Add a new function PKCS7_signatureVerify. This allows the verification
8270 of a PKCS#7 signature but with the signing certificate passed to the
8271 function itself. This contrasts with PKCS7_dataVerify which assumes the
8272 certificate is present in the PKCS#7 structure. This isn't always the
8273 case: certificates can be omitted from a PKCS#7 structure and be
8274 distributed by "out of band" means (such as a certificate database).
8277 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
8278 function prototypes in pem.h, also change util/mkdef.pl to add the
8279 necessary function names.
8282 *) mk1mf.pl (used by Windows builds) did not properly read the
8283 options set by Configure in the top level Makefile, and Configure
8284 was not even able to write more than one option correctly.
8285 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
8288 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
8289 file to be loaded from a BIO or FILE pointer. The BIO version will
8290 for example allow memory BIOs to contain config info.
8293 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
8294 Whoever hopes to achieve shared-library compatibility across versions
8295 must use this, not the compile-time macro.
8296 (Exercise 0.9.4: Which is the minimum library version required by
8298 Note: All this applies only to multi-threaded programs, others don't
8302 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
8303 through a BIO pair triggered the default case, i.e.
8304 SSLerr(...,SSL_R_UNKNOWN_STATE).
8307 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
8308 can use the SSL library even if none of the specific BIOs is
8312 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
8313 for the encoded length.
8314 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
8316 *) Add initial documentation of the X509V3 functions.
8319 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
8320 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
8321 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
8322 secure PKCS#8 private key format with a high iteration count.
8325 *) Fix determination of Perl interpreter: A perl or perl5
8326 _directory_ in $PATH was also accepted as the interpreter.
8327 [Ralf S. Engelschall]
8329 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
8330 wrong with it but it was very old and did things like calling
8331 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
8335 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
8336 to use the new extension code.
8339 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
8340 with macros. This should make it easier to change their form, add extra
8341 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
8345 *) Add to configuration table a new entry that can specify an alternative
8346 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
8347 according to Mark Crispin <MRC@Panda.COM>.
8351 *) DES CBC did not update the IV. Weird.
8354 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
8355 Changing the behaviour of the former might break existing programs --
8356 where IV updating is needed, des_ncbc_encrypt can be used.
8359 *) When bntest is run from "make test" it drives bc to check its
8360 calculations, as well as internally checking them. If an internal check
8361 fails, it needs to cause bc to give a non-zero result or make test carries
8362 on without noticing the failure. Fixed.
8365 *) DES library cleanups.
8368 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
8369 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
8370 ciphers. NOTE: although the key derivation function has been verified
8371 against some published test vectors it has not been extensively tested
8372 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
8376 *) Instead of "mkdir -p", which is not fully portable, use new
8377 Perl script "util/mkdir-p.pl".
8380 *) Rewrite the way password based encryption (PBE) is handled. It used to
8381 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
8382 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
8383 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
8384 the 'parameter' field of the AlgorithmIdentifier is passed to the
8385 underlying key generation function so it must do its own ASN1 parsing.
8386 This has also changed the EVP_PBE_CipherInit() function which now has a
8387 'parameter' argument instead of literal salt and iteration count values
8388 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
8391 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
8392 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
8393 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
8394 KEY" because this clashed with PKCS#8 unencrypted string. Since this
8395 value was just used as a "magic string" and not used directly its
8396 value doesn't matter.
8399 *) Introduce some semblance of const correctness to BN. Shame C doesn't
8403 *) "linux-sparc64" configuration (ultrapenguin).
8404 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
8405 "linux-sparc" configuration.
8406 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
8408 *) config now generates no-xxx options for missing ciphers.
8411 *) Support the EBCDIC character set (work in progress).
8412 File ebcdic.c not yet included because it has a different license.
8413 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8415 *) Support BS2000/OSD-POSIX.
8416 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8418 *) Make callbacks for key generation use void * instead of char *.
8421 *) Make S/MIME samples compile (not yet tested).
8424 *) Additional typesafe stacks.
8427 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
8431 Changes between 0.9.3 and 0.9.3a [29 May 1999]
8433 *) New configuration variant "sco5-gcc".
8435 *) Updated some demos.
8436 [Sean O Riordain, Wade Scholine]
8438 *) Add missing BIO_free at exit of pkcs12 application.
8441 *) Fix memory leak in conf.c.
8444 *) Updates for Win32 to assembler version of MD5.
8447 *) Set #! path to perl in apps/der_chop to where we found it
8448 instead of using a fixed path.
8451 *) SHA library changes for irix64-mips4-cc.
8454 *) Improvements for VMS support.
8458 Changes between 0.9.2b and 0.9.3 [24 May 1999]
8460 *) Bignum library bug fix. IRIX 6 passes "make test" now!
8461 This also avoids the problems with SC4.2 and unpatched SC5.
8462 [Andy Polyakov <appro@fy.chalmers.se>]
8464 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
8465 These are required because of the typesafe stack would otherwise break
8466 existing code. If old code used a structure member which used to be STACK
8467 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
8468 sk_num or sk_value it would produce an error because the num, data members
8469 are not present in STACK_OF. Now it just produces a warning. sk_set
8470 replaces the old method of assigning a value to sk_value
8471 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
8472 that does this will no longer work (and should use sk_set instead) but
8473 this could be regarded as a "questionable" behaviour anyway.
8476 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
8477 correctly handle encrypted S/MIME data.
8480 *) Change type of various DES function arguments from des_cblock
8481 (which means, in function argument declarations, pointer to char)
8482 to des_cblock * (meaning pointer to array with 8 char elements),
8483 which allows the compiler to do more typechecking; it was like
8484 that back in SSLeay, but with lots of ugly casts.
8486 Introduce new type const_des_cblock.
8489 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
8490 problems: find RecipientInfo structure that matches recipient certificate
8491 and initialise the ASN1 structures properly based on passed cipher.
8494 *) Belatedly make the BN tests actually check the results.
8497 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
8498 to and from BNs: it was completely broken. New compilation option
8499 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
8500 key elements as negative integers.
8503 *) Reorganize and speed up MD5.
8504 [Andy Polyakov <appro@fy.chalmers.se>]
8507 [Richard Levitte <richard@levitte.org>]
8509 *) New option -out to asn1parse to allow the parsed structure to be
8510 output to a file. This is most useful when combined with the -strparse
8511 option to examine the output of things like OCTET STRINGS.
8514 *) Make SSL library a little more fool-proof by not requiring any longer
8515 that SSL_set_{accept,connect}_state be called before
8516 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
8517 in many applications because usually everything *appeared* to work as
8518 intended anyway -- now it really works as intended).
8521 *) Move openssl.cnf out of lib/.
8524 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
8525 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
8526 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
8527 [Ralf S. Engelschall]
8529 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
8530 handle PKCS#7 enveloped data properly.
8531 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
8533 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
8534 copying pointers. The cert_st handling is changed by this in
8535 various ways (and thus what used to be known as ctx->default_cert
8536 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
8537 any longer when s->cert does not give us what we need).
8538 ssl_cert_instantiate becomes obsolete by this change.
8539 As soon as we've got the new code right (possibly it already is?),
8540 we have solved a couple of bugs of the earlier code where s->cert
8541 was used as if it could not have been shared with other SSL structures.
8543 Note that using the SSL API in certain dirty ways now will result
8544 in different behaviour than observed with earlier library versions:
8545 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
8546 does not influence s as it used to.
8548 In order to clean up things more thoroughly, inside SSL_SESSION
8549 we don't use CERT any longer, but a new structure SESS_CERT
8550 that holds per-session data (if available); currently, this is
8551 the peer's certificate chain and, for clients, the server's certificate
8552 and temporary key. CERT holds only those values that can have
8553 meaningful defaults in an SSL_CTX.
8556 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
8557 from the internal representation. Various PKCS#7 fixes: remove some
8558 evil casts and set the enc_dig_alg field properly based on the signing
8562 *) Allow PKCS#12 password to be set from the command line or the
8563 environment. Let 'ca' get its config file name from the environment
8564 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
8568 *) Allow certificate policies extension to use an IA5STRING for the
8569 organization field. This is contrary to the PKIX definition but
8570 VeriSign uses it and IE5 only recognises this form. Document 'x509'
8574 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
8575 without disallowing inline assembler and the like for non-pedantic builds.
8578 *) Support Borland C++ builder.
8579 [Janez Jere <jj@void.si>, modified by Ulf Möller]
8584 *) SHA-1 cleanups and performance enhancements.
8585 [Andy Polyakov <appro@fy.chalmers.se>]
8587 *) Sparc v8plus assembler for the bignum library.
8588 [Andy Polyakov <appro@fy.chalmers.se>]
8590 *) Accept any -xxx and +xxx compiler options in Configure.
8593 *) Update HPUX configuration.
8596 *) Add missing sk_<type>_unshift() function to safestack.h
8597 [Ralf S. Engelschall]
8599 *) New function SSL_CTX_use_certificate_chain_file that sets the
8600 "extra_cert"s in addition to the certificate. (This makes sense
8601 only for "PEM" format files, as chains as a whole are not
8605 *) Support verify_depth from the SSL API.
8606 x509_vfy.c had what can be considered an off-by-one-error:
8607 Its depth (which was not part of the external interface)
8608 was actually counting the number of certificates in a chain;
8609 now it really counts the depth.
8612 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
8613 instead of X509err, which often resulted in confusing error
8614 messages since the error codes are not globally unique
8615 (e.g. an alleged error in ssl3_accept when a certificate
8616 didn't match the private key).
8618 *) New function SSL_CTX_set_session_id_context that allows to set a default
8619 value (so that you don't need SSL_set_session_id_context for each
8620 connection using the SSL_CTX).
8623 *) OAEP decoding bug fix.
8626 *) Support INSTALL_PREFIX for package builders, as proposed by
8630 *) New Configure options "threads" and "no-threads". For systems
8631 where the proper compiler options are known (currently Solaris
8632 and Linux), "threads" is the default.
8635 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
8638 *) Install various scripts to $(OPENSSLDIR)/misc, not to
8639 $(INSTALLTOP)/bin -- they shouldn't clutter directories
8640 such as /usr/local/bin.
8643 *) "make linux-shared" to build shared libraries.
8644 [Niels Poppe <niels@netbox.org>]
8646 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
8649 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
8650 extension adding in x509 utility.
8653 *) Remove NOPROTO sections and error code comments.
8656 *) Partial rewrite of the DEF file generator to now parse the ANSI
8660 *) New Configure options --prefix=DIR and --openssldir=DIR.
8663 *) Complete rewrite of the error code script(s). It is all now handled
8664 by one script at the top level which handles error code gathering,
8665 header rewriting and C source file generation. It should be much better
8666 than the old method: it now uses a modified version of Ulf's parser to
8667 read the ANSI prototypes in all header files (thus the old K&R definitions
8668 aren't needed for error creation any more) and do a better job of
8669 translating function codes into names. The old 'ASN1 error code imbedded
8670 in a comment' is no longer necessary and it doesn't use .err files which
8671 have now been deleted. Also the error code call doesn't have to appear all
8672 on one line (which resulted in some large lines...).
8675 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
8678 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
8679 0 (which usually indicates a closed connection), but continue reading.
8682 *) Fix some race conditions.
8685 *) Add support for CRL distribution points extension. Add Certificate
8686 Policies and CRL distribution points documentation.
8689 *) Move the autogenerated header file parts to crypto/opensslconf.h.
8692 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
8693 8 of keying material. Merlin has also confirmed interop with this fix
8694 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
8695 [Merlin Hughes <merlin@baltimore.ie>]
8697 *) Fix lots of warnings.
8698 [Richard Levitte <levitte@stacken.kth.se>]
8700 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
8701 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
8702 [Richard Levitte <levitte@stacken.kth.se>]
8704 *) Fix problems with sizeof(long) == 8.
8705 [Andy Polyakov <appro@fy.chalmers.se>]
8707 *) Change functions to ANSI C.
8710 *) Fix typos in error codes.
8711 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
8713 *) Remove defunct assembler files from Configure.
8716 *) SPARC v8 assembler BIGNUM implementation.
8717 [Andy Polyakov <appro@fy.chalmers.se>]
8719 *) Support for Certificate Policies extension: both print and set.
8720 Various additions to support the r2i method this uses.
8723 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
8724 return a const string when you are expecting an allocated buffer.
8727 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
8728 types DirectoryString and DisplayText.
8731 *) Add code to allow r2i extensions to access the configuration database,
8732 add an LHASH database driver and add several ctx helper functions.
8735 *) Fix an evil bug in bn_expand2() which caused various BN functions to
8736 fail when they extended the size of a BIGNUM.
8739 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
8740 support typesafe stack.
8743 *) Fix typo in SSL_[gs]et_options().
8744 [Nils Frostberg <nils@medcom.se>]
8746 *) Delete various functions and files that belonged to the (now obsolete)
8747 old X509V3 handling code.
8750 *) New Configure option "rsaref".
8753 *) Don't auto-generate pem.h.
8756 *) Introduce type-safe ASN.1 SETs.
8759 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
8760 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
8762 *) Introduce type-safe STACKs. This will almost certainly break lots of code
8763 that links with OpenSSL (well at least cause lots of warnings), but fear
8764 not: the conversion is trivial, and it eliminates loads of evil casts. A
8765 few STACKed things have been converted already. Feel free to convert more.
8766 In the fullness of time, I'll do away with the STACK type altogether.
8769 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
8770 specified in <certfile> by updating the entry in the index.txt file.
8771 This way one no longer has to edit the index.txt file manually for
8772 revoking a certificate. The -revoke option does the gory details now.
8773 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
8775 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
8776 `-text' option at all and this way the `-noout -text' combination was
8777 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
8778 [Ralf S. Engelschall]
8780 *) Make sure a corresponding plain text error message exists for the
8781 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
8782 verify callback function determined that a certificate was revoked.
8783 [Ralf S. Engelschall]
8785 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
8786 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
8787 all available cipers including rc5, which was forgotten until now.
8788 In order to let the testing shell script know which algorithms
8789 are available, a new (up to now undocumented) command
8790 "openssl list-cipher-commands" is used.
8793 *) Bugfix: s_client occasionally would sleep in select() when
8794 it should have checked SSL_pending() first.
8797 *) New functions DSA_do_sign and DSA_do_verify to provide access to
8798 the raw DSA values prior to ASN.1 encoding.
8801 *) Tweaks to Configure
8802 [Niels Poppe <niels@netbox.org>]
8804 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
8808 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
8811 *) New config option to avoid instructions that are illegal on the 80386.
8812 The default code is faster, but requires at least a 486.
8815 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
8816 SSL2_SERVER_VERSION (not used at all) macros, which are now the
8817 same as SSL2_VERSION anyway.
8820 *) New "-showcerts" option for s_client.
8823 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
8824 application. Various cleanups and fixes.
8827 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
8828 modify error routines to work internally. Add error codes and PBE init
8829 to library startup routines.
8832 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
8833 packing functions to asn1 and evp. Changed function names and error
8834 codes along the way.
8837 *) PKCS12 integration: and so it begins... First of several patches to
8838 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
8839 objects to objects.h
8842 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
8843 and display support for Thawte strong extranet extension.
8846 *) Add LinuxPPC support.
8847 [Jeff Dubrule <igor@pobox.org>]
8849 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
8850 bn_div_words in alpha.s.
8851 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
8853 *) Make sure the RSA OAEP test is skipped under -DRSAref because
8854 OAEP isn't supported when OpenSSL is built with RSAref.
8855 [Ulf Moeller <ulf@fitug.de>]
8857 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
8858 so they no longer are missing under -DNOPROTO.
8859 [Soren S. Jorvang <soren@t.dk>]
8862 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
8864 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
8865 doesn't work when the session is reused. Coming soon!
8868 *) Fix a security hole, that allows sessions to be reused in the wrong
8869 context thus bypassing client cert protection! All software that uses
8870 client certs and session caches in multiple contexts NEEDS PATCHING to
8871 allow session reuse! A fuller solution is in the works.
8872 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
8874 *) Some more source tree cleanups (removed obsolete files
8875 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
8876 permission on "config" script to be executable) and a fix for the INSTALL
8878 [Ulf Moeller <ulf@fitug.de>]
8880 *) Remove some legacy and erroneous uses of malloc, free instead of
8882 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
8884 *) Make rsa_oaep_test return non-zero on error.
8885 [Ulf Moeller <ulf@fitug.de>]
8887 *) Add support for native Solaris shared libraries. Configure
8888 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
8889 if someone would make that last step automatic.
8890 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
8892 *) ctx_size was not built with the right compiler during "make links". Fixed.
8895 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
8896 except NULL ciphers". This means the default cipher list will no longer
8897 enable NULL ciphers. They need to be specifically enabled e.g. with
8898 the string "DEFAULT:eNULL".
8901 *) Fix to RSA private encryption routines: if p < q then it would
8902 occasionally produce an invalid result. This will only happen with
8903 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
8906 *) Be less restrictive and allow also `perl util/perlpath.pl
8907 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
8908 because this way one can also use an interpreter named `perl5' (which is
8909 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
8910 installed as `perl').
8911 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8913 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
8914 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8916 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
8917 advapi32.lib to Win32 build and change the pem test comparision
8918 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
8919 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
8920 and crypto/des/ede_cbcm_enc.c.
8923 *) DES quad checksum was broken on big-endian architectures. Fixed.
8926 *) Comment out two functions in bio.h that aren't implemented. Fix up the
8927 Win32 test batch file so it (might) work again. The Win32 test batch file
8928 is horrible: I feel ill....
8931 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
8932 in e_os.h. Audit of header files to check ANSI and non ANSI
8933 sections: 10 functions were absent from non ANSI section and not exported
8934 from Windows DLLs. Fixed up libeay.num for new functions.
8937 *) Make `openssl version' output lines consistent.
8938 [Ralf S. Engelschall]
8940 *) Fix Win32 symbol export lists for BIO functions: Added
8941 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
8942 to ms/libeay{16,32}.def.
8943 [Ralf S. Engelschall]
8945 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
8946 fine under Unix and passes some trivial tests I've now added. But the
8947 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
8948 added to make sure no one expects that this stuff really works in the
8949 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
8950 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
8952 [Ralf S. Engelschall]
8954 *) Fix the generation of two part addresses in perl.
8955 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
8957 *) Add config entry for Linux on MIPS.
8958 [John Tobey <jtobey@channel1.com>]
8960 *) Make links whenever Configure is run, unless we are on Windoze.
8963 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
8964 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
8968 *) Add a useful kludge to allow package maintainers to specify compiler and
8969 other platforms details on the command line without having to patch the
8970 Configure script everytime: One now can use ``perl Configure
8971 <id>:<details>'', i.e. platform ids are allowed to have details appended
8972 to them (seperated by colons). This is treated as there would be a static
8973 pre-configured entry in Configure's %table under key <id> with value
8974 <details> and ``perl Configure <id>'' is called. So, when you want to
8975 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
8976 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
8977 now, which overrides the FreeBSD-elf entry on-the-fly.
8978 [Ralf S. Engelschall]
8980 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
8983 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
8984 on the `perl Configure ...' command line. This way one can compile
8985 OpenSSL libraries with Position Independent Code (PIC) which is needed
8986 for linking it into DSOs.
8987 [Ralf S. Engelschall]
8989 *) Remarkably, export ciphers were totally broken and no-one had noticed!
8993 *) Cleaned up the LICENSE document: The official contact for any license
8994 questions now is the OpenSSL core team under openssl-core@openssl.org.
8995 And add a paragraph about the dual-license situation to make sure people
8996 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
8997 to the OpenSSL toolkit.
8998 [Ralf S. Engelschall]
9000 *) General source tree makefile cleanups: Made `making xxx in yyy...'
9001 display consistent in the source tree and replaced `/bin/rm' by `rm'.
9002 Additonally cleaned up the `make links' target: Remove unnecessary
9003 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
9004 to speed processing and no longer clutter the display with confusing
9005 stuff. Instead only the actually done links are displayed.
9006 [Ralf S. Engelschall]
9008 *) Permit null encryption ciphersuites, used for authentication only. It used
9009 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
9010 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
9014 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
9015 signed attributes when verifying signatures (this would break them),
9016 the detached data encoding was wrong and public keys obtained using
9017 X509_get_pubkey() weren't freed.
9020 *) Add text documentation for the BUFFER functions. Also added a work around
9021 to a Win95 console bug. This was triggered by the password read stuff: the
9022 last character typed gets carried over to the next fread(). If you were
9023 generating a new cert request using 'req' for example then the last
9024 character of the passphrase would be CR which would then enter the first
9028 *) Added the new `Includes OpenSSL Cryptography Software' button as
9029 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
9030 button and can be used by applications based on OpenSSL to show the
9031 relationship to the OpenSSL project.
9032 [Ralf S. Engelschall]
9034 *) Remove confusing variables in function signatures in files
9035 ssl/ssl_lib.c and ssl/ssl.h.
9036 [Lennart Bong <lob@kulthea.stacken.kth.se>]
9038 *) Don't install bss_file.c under PREFIX/include/
9039 [Lennart Bong <lob@kulthea.stacken.kth.se>]
9041 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
9042 functions that return function pointers and has support for NT specific
9043 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
9044 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
9045 unsigned to signed types: this was killing the Win32 compile.
9048 *) Add new certificate file to stack functions,
9049 SSL_add_dir_cert_subjects_to_stack() and
9050 SSL_add_file_cert_subjects_to_stack(). These largely supplant
9051 SSL_load_client_CA_file(), and can be used to add multiple certs easily
9052 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
9053 This means that Apache-SSL and similar packages don't have to mess around
9054 to add as many CAs as they want to the preferred list.
9057 *) Experiment with doxygen documentation. Currently only partially applied to
9059 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
9060 openssl.doxy as the configuration file.
9063 *) Get rid of remaining C++-style comments which strict C compilers hate.
9064 [Ralf S. Engelschall, pointed out by Carlos Amengual]
9066 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
9067 compiled in by default: it has problems with large keys.
9070 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
9071 DH private keys and/or callback functions which directly correspond to
9072 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
9073 is needed for applications which have to configure certificates on a
9074 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
9076 For the RSA certificate situation is makes no difference, but
9077 for the DSA certificate situation this fixes the "no shared cipher"
9078 problem where the OpenSSL cipher selection procedure failed because the
9079 temporary keys were not overtaken from the context and the API provided
9080 no way to reconfigure them.
9081 The new functions now let applications reconfigure the stuff and they
9082 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
9083 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
9084 non-public-API function ssl_cert_instantiate() is used as a helper
9085 function and also to reduce code redundancy inside ssl_rsa.c.
9086 [Ralf S. Engelschall]
9088 *) Move s_server -dcert and -dkey options out of the undocumented feature
9089 area because they are useful for the DSA situation and should be
9090 recognized by the users.
9091 [Ralf S. Engelschall]
9093 *) Fix the cipher decision scheme for export ciphers: the export bits are
9094 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
9095 SSL_EXP_MASK. So, the original variable has to be used instead of the
9096 already masked variable.
9097 [Richard Levitte <levitte@stacken.kth.se>]
9099 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
9100 [Richard Levitte <levitte@stacken.kth.se>]
9102 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
9103 from `int' to `unsigned int' because it's a length and initialized by
9104 EVP_DigestFinal() which expects an `unsigned int *'.
9105 [Richard Levitte <levitte@stacken.kth.se>]
9107 *) Don't hard-code path to Perl interpreter on shebang line of Configure
9108 script. Instead use the usual Shell->Perl transition trick.
9109 [Ralf S. Engelschall]
9111 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
9112 (in addition to RSA certificates) to match the behaviour of `openssl dsa
9113 -noout -modulus' as it's already the case for `openssl rsa -noout
9114 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
9115 currently the public key is printed (a decision which was already done by
9116 `openssl dsa -modulus' in the past) which serves a similar purpose.
9117 Additionally the NO_RSA no longer completely removes the whole -modulus
9118 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
9120 [Ralf S. Engelschall]
9122 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
9123 BIO. See the source (crypto/evp/bio_ok.c) for more info.
9124 [Arne Ansper <arne@ats.cyber.ee>]
9126 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
9127 to be added. Now both 'req' and 'ca' can use new objects defined in the
9131 *) Add cool BIO that does syslog (or event log on NT).
9132 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
9134 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
9135 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
9136 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
9137 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
9140 *) Add preliminary config info for new extension code.
9143 *) Make RSA_NO_PADDING really use no padding.
9144 [Ulf Moeller <ulf@fitug.de>]
9146 *) Generate errors when private/public key check is done.
9149 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
9150 for some CRL extensions and new objects added.
9153 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
9154 key usage extension and fuller support for authority key id.
9157 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
9158 padding method for RSA, which is recommended for new applications in PKCS
9159 #1 v2.0 (RFC 2437, October 1998).
9160 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
9161 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
9162 against Bleichbacher's attack on RSA.
9163 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
9166 *) Updates to the new SSL compression code
9167 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9169 *) Fix so that the version number in the master secret, when passed
9170 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
9171 (because the server will not accept higher), that the version number
9172 is 0x03,0x01, not 0x03,0x00
9173 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9175 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
9176 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
9177 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
9180 *) Support for RAW extensions where an arbitrary extension can be
9181 created by including its DER encoding. See apps/openssl.cnf for
9185 *) Make sure latest Perl versions don't interpret some generated C array
9186 code as Perl array code in the crypto/err/err_genc.pl script.
9187 [Lars Weber <3weber@informatik.uni-hamburg.de>]
9189 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
9190 not many people have the assembler. Various Win32 compilation fixes and
9191 update to the INSTALL.W32 file with (hopefully) more accurate Win32
9195 *) Modify configure script 'Configure' to automatically create crypto/date.h
9196 file under Win32 and also build pem.h from pem.org. New script
9197 util/mkfiles.pl to create the MINFO file on environments that can't do a
9198 'make files': perl util/mkfiles.pl >MINFO should work.
9201 *) Major rework of DES function declarations, in the pursuit of correctness
9202 and purity. As a result, many evil casts evaporated, and some weirdness,
9203 too. You may find this causes warnings in your code. Zapping your evil
9204 casts will probably fix them. Mostly.
9207 *) Fix for a typo in asn1.h. Bug fix to object creation script
9208 obj_dat.pl. It considered a zero in an object definition to mean
9209 "end of object": none of the objects in objects.h have any zeros
9210 so it wasn't spotted.
9211 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
9213 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
9214 Masking (CBCM). In the absence of test vectors, the best I have been able
9215 to do is check that the decrypt undoes the encrypt, so far. Send me test
9216 vectors if you have them.
9219 *) Correct calculation of key length for export ciphers (too much space was
9220 allocated for null ciphers). This has not been tested!
9223 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
9224 message is now correct (it understands "crypto" and "ssl" on its
9225 command line). There is also now an "update" option. This will update
9226 the util/ssleay.num and util/libeay.num files with any new functions.
9228 perl util/mkdef.pl crypto ssl update
9229 it will update them.
9232 *) Overhauled the Perl interface (perl/*):
9233 - ported BN stuff to OpenSSL's different BN library
9234 - made the perl/ source tree CVS-aware
9235 - renamed the package from SSLeay to OpenSSL (the files still contain
9236 their history because I've copied them in the repository)
9237 - removed obsolete files (the test scripts will be replaced
9238 by better Test::Harness variants in the future)
9239 [Ralf S. Engelschall]
9241 *) First cut for a very conservative source tree cleanup:
9242 1. merge various obsolete readme texts into doc/ssleay.txt
9243 where we collect the old documents and readme texts.
9244 2. remove the first part of files where I'm already sure that we no
9245 longer need them because of three reasons: either they are just temporary
9246 files which were left by Eric or they are preserved original files where
9247 I've verified that the diff is also available in the CVS via "cvs diff
9248 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
9249 the crypto/md/ stuff).
9250 [Ralf S. Engelschall]
9252 *) More extension code. Incomplete support for subject and issuer alt
9253 name, issuer and authority key id. Change the i2v function parameters
9254 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
9255 what that's for :-) Fix to ASN1 macro which messed up
9256 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
9259 *) Preliminary support for ENUMERATED type. This is largely copied from the
9263 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
9264 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9266 *) Make sure `make rehash' target really finds the `openssl' program.
9267 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9269 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
9270 like to hear about it if this slows down other processors.
9273 *) Add CygWin32 platform information to Configure script.
9274 [Alan Batie <batie@aahz.jf.intel.com>]
9276 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
9277 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
9279 *) New program nseq to manipulate netscape certificate sequences
9282 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
9286 *) Fixes to BN code. Previously the default was to define BN_RECURSION
9287 but the BN code had some problems that would cause failures when
9288 doing certificate verification and some other functions.
9289 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9291 *) Add ASN1 and PEM code to support netscape certificate sequences.
9294 *) Add ASN1 and PEM code to support netscape certificate sequences.
9297 *) Add several PKIX and private extended key usage OIDs.
9300 *) Modify the 'ca' program to handle the new extension code. Modify
9301 openssl.cnf for new extension format, add comments.
9304 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
9305 and add a sample to openssl.cnf so req -x509 now adds appropriate
9309 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
9310 error code, add initial support to X509_print() and x509 application.
9313 *) Takes a deep breath and start addding X509 V3 extension support code. Add
9314 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
9315 stuff is currently isolated and isn't even compiled yet.
9318 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
9319 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
9320 Removed the versions check from X509 routines when loading extensions:
9321 this allows certain broken certificates that don't set the version
9322 properly to be processed.
9325 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
9326 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
9327 can still be regenerated with "make depend".
9330 *) Spelling mistake in C version of CAST-128.
9331 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
9333 *) Changes to the error generation code. The perl script err-code.pl
9334 now reads in the old error codes and retains the old numbers, only
9335 adding new ones if necessary. It also only changes the .err files if new
9336 codes are added. The makefiles have been modified to only insert errors
9337 when needed (to avoid needlessly modifying header files). This is done
9338 by only inserting errors if the .err file is newer than the auto generated
9339 C file. To rebuild all the error codes from scratch (the old behaviour)
9340 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
9341 or delete all the .err files.
9344 *) CAST-128 was incorrectly implemented for short keys. The C version has
9345 been fixed, but is untested. The assembler versions are also fixed, but
9346 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
9347 to regenerate it if needed.
9348 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
9349 Hagino <itojun@kame.net>]
9351 *) File was opened incorrectly in randfile.c.
9352 [Ulf Möller <ulf@fitug.de>]
9354 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
9355 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
9356 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
9357 al: it's just almost always a UTCTime. Note this patch adds new error
9358 codes so do a "make errors" if there are problems.
9361 *) Correct Linux 1 recognition in config.
9362 [Ulf Möller <ulf@fitug.de>]
9364 *) Remove pointless MD5 hash when using DSA keys in ca.
9365 [Anonymous <nobody@replay.com>]
9367 *) Generate an error if given an empty string as a cert directory. Also
9368 generate an error if handed NULL (previously returned 0 to indicate an
9369 error, but didn't set one).
9370 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
9372 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
9375 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
9376 parameters. This was causing a warning which killed off the Win32 compile.
9379 *) Remove C++ style comments from crypto/bn/bn_local.h.
9380 [Neil Costigan <neil.costigan@celocom.com>]
9382 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
9383 based on a text string, looking up short and long names and finally
9384 "dot" format. The "dot" format stuff didn't work. Added new function
9385 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
9386 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
9387 OID is not part of the table.
9390 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
9391 X509_LOOKUP_by_alias().
9394 *) Sort openssl functions by name.
9397 *) Get the gendsa program working (hopefully) and add it to app list. Remove
9398 encryption from sample DSA keys (in case anyone is interested the password
9402 *) Make _all_ *_free functions accept a NULL pointer.
9403 [Frans Heymans <fheymans@isaserver.be>]
9405 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
9407 [Anonymous <nobody@replay.com>]
9409 *) s_server should send the CAfile as acceptable CAs, not its own cert.
9410 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
9412 *) Don't blow it for numeric -newkey arguments to apps/req.
9413 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
9415 *) Temp key "for export" tests were wrong in s3_srvr.c.
9416 [Anonymous <nobody@replay.com>]
9418 *) Add prototype for temp key callback functions
9419 SSL_CTX_set_tmp_{rsa,dh}_callback().
9422 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
9423 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
9426 *) X509_name_add_entry() freed the wrong thing after an error.
9427 [Arne Ansper <arne@ats.cyber.ee>]
9429 *) rsa_eay.c would attempt to free a NULL context.
9430 [Arne Ansper <arne@ats.cyber.ee>]
9432 *) BIO_s_socket() had a broken should_retry() on Windoze.
9433 [Arne Ansper <arne@ats.cyber.ee>]
9435 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
9436 [Arne Ansper <arne@ats.cyber.ee>]
9438 *) Make sure the already existing X509_STORE->depth variable is initialized
9439 in X509_STORE_new(), but document the fact that this variable is still
9440 unused in the certificate verification process.
9441 [Ralf S. Engelschall]
9443 *) Fix the various library and apps files to free up pkeys obtained from
9444 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
9447 *) Fix reference counting in X509_PUBKEY_get(). This makes
9448 demos/maurice/example2.c work, amongst others, probably.
9449 [Steve Henson and Ben Laurie]
9451 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
9452 `openssl' and second, the shortcut symlinks for the `openssl <command>'
9453 are no longer created. This way we have a single and consistent command
9454 line interface `openssl <command>', similar to `cvs <command>'.
9455 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
9457 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
9458 BIT STRING wrapper always have zero unused bits.
9461 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
9464 *) Make the top-level INSTALL documentation easier to understand.
9467 *) Makefiles updated to exit if an error occurs in a sub-directory
9468 make (including if user presses ^C) [Paul Sutton]
9470 *) Make Montgomery context stuff explicit in RSA data structure.
9473 *) Fix build order of pem and err to allow for generated pem.h.
9476 *) Fix renumbering bug in X509_NAME_delete_entry().
9479 *) Enhanced the err-ins.pl script so it makes the error library number
9480 global and can add a library name. This is needed for external ASN1 and
9481 other error libraries.
9484 *) Fixed sk_insert which never worked properly.
9487 *) Fix ASN1 macros so they can handle indefinite length construted
9488 EXPLICIT tags. Some non standard certificates use these: they can now
9492 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
9493 into a single doc/ssleay.txt bundle. This way the information is still
9494 preserved but no longer messes up this directory. Now it's new room for
9495 the new set of documenation files.
9496 [Ralf S. Engelschall]
9498 *) SETs were incorrectly DER encoded. This was a major pain, because they
9499 shared code with SEQUENCEs, which aren't coded the same. This means that
9500 almost everything to do with SETs or SEQUENCEs has either changed name or
9501 number of arguments.
9502 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
9504 *) Fix test data to work with the above.
9507 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
9508 was already fixed by Eric for 0.9.1 it seems.
9509 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
9511 *) Autodetect FreeBSD3.
9514 *) Fix various bugs in Configure. This affects the following platforms:
9518 unixware-2.0-pentium
9522 *) Eliminate generated files from CVS. Reorder tests to regenerate files
9523 before they are needed.
9526 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
9530 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
9532 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
9533 changed SSLeay to OpenSSL in version strings.
9534 [Ralf S. Engelschall]
9536 *) Some fixups to the top-level documents.
9539 *) Fixed the nasty bug where rsaref.h was not found under compile-time
9540 because the symlink to include/ was missing.
9541 [Ralf S. Engelschall]
9543 *) Incorporated the popular no-RSA/DSA-only patches
9544 which allow to compile a RSA-free SSLeay.
9545 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
9547 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
9548 when "ssleay" is still not found.
9549 [Ralf S. Engelschall]
9551 *) Added more platforms to Configure: Cray T3E, HPUX 11,
9552 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
9554 *) Updated the README file.
9555 [Ralf S. Engelschall]
9557 *) Added various .cvsignore files in the CVS repository subdirs
9558 to make a "cvs update" really silent.
9559 [Ralf S. Engelschall]
9561 *) Recompiled the error-definition header files and added
9562 missing symbols to the Win32 linker tables.
9563 [Ralf S. Engelschall]
9565 *) Cleaned up the top-level documents;
9566 o new files: CHANGES and LICENSE
9567 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
9568 o merged COPYRIGHT into LICENSE
9569 o removed obsolete TODO file
9570 o renamed MICROSOFT to INSTALL.W32
9571 [Ralf S. Engelschall]
9573 *) Removed dummy files from the 0.9.1b source tree:
9574 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
9575 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
9576 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
9577 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
9578 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
9579 [Ralf S. Engelschall]
9581 *) Added various platform portability fixes.
9584 *) The Genesis of the OpenSSL rpject:
9585 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
9586 Young and Tim J. Hudson created while they were working for C2Net until
9588 [The OpenSSL Project]
9591 Changes between 0.9.0b and 0.9.1b [not released]
9593 *) Updated a few CA certificates under certs/
9596 *) Changed some BIGNUM api stuff.
9599 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
9600 DGUX x86, Linux Alpha, etc.
9603 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
9604 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
9608 *) Add -strparse option to asn1pars program which parses nested
9610 [Dr Stephen Henson <shenson@bigfoot.com>]
9612 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
9615 *) DSA fix for "ca" program.
9618 *) Added "-genkey" option to "dsaparam" program.
9621 *) Added RIPE MD160 (rmd160) message digest.
9624 *) Added -a (all) option to "ssleay version" command.
9627 *) Added PLATFORM define which is the id given to Configure.
9630 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
9633 *) Extended the ASN.1 parser routines.
9636 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
9639 *) Added a BN_CTX to the BN library.
9642 *) Fixed the weak key values in DES library
9645 *) Changed API in EVP library for cipher aliases.
9648 *) Added support for RC2/64bit cipher.
9651 *) Converted the lhash library to the crypto/mem.c functions.
9654 *) Added more recognized ASN.1 object ids.
9657 *) Added more RSA padding checks for SSL/TLS.
9660 *) Added BIO proxy/filter functionality.
9663 *) Added extra_certs to SSL_CTX which can be used
9664 send extra CA certificates to the client in the CA cert chain sending
9665 process. It can be configured with SSL_CTX_add_extra_chain_cert().
9668 *) Now Fortezza is denied in the authentication phase because
9669 this is key exchange mechanism is not supported by SSLeay at all.
9672 *) Additional PKCS1 checks.
9675 *) Support the string "TLSv1" for all TLS v1 ciphers.
9678 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
9679 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
9682 *) Fixed a few memory leaks.
9685 *) Fixed various code and comment typos.
9688 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
9689 bytes sent in the client random.
9690 [Edward Bishop <ebishop@spyglass.com>]
projects / oweals / openssl.git / blob