5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
8 Update fips_gcmtest to use IV generator.
11 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
12 setting output buffer to NULL. The *Final function must be
13 called although it will not retrieve any additional data. The tag
14 can be set or retrieved with a ctrl. The IV length is by default 12
15 bytes (96 bits) but can be set to an alternative value. If the IV
16 length exceeds the maximum IV length (currently 16 bytes) it cannot be
20 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
21 underlying do_cipher function handles all cipher semantics itself
22 including padding and finalisation. This is useful if (for example)
23 an ENGINE cipher handles block padding itself. The behaviour of
24 do_cipher is subtly changed if this flag is set: the return value
25 is the number of characters written to the output buffer (zero is
26 no longer an error code) or a negative error code. Also if the
27 input buffer is NULL and length 0 finalisation should be performed.
30 *) If a candidate issuer certificate is already part of the constructed
31 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
34 *) Improve forward-security support: add functions
36 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
37 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
39 for use by SSL/TLS servers; the callback function will be called whenever a
40 new session is created, and gets to decide whether the session may be
41 cached to make it resumable (return 0) or not (return 1). (As by the
42 SSL/TLS protocol specifications, the session_id sent by the server will be
43 empty to indicate that the session is not resumable; also, the server will
44 not generate RFC 4507 (RFC 5077) session tickets.)
46 A simple reasonable callback implementation is to return is_forward_secure.
47 This parameter will be set to 1 or 0 depending on the ciphersuite selected
48 by the SSL/TLS server library, indicating whether it can provide forward
50 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
52 *) Add Next Protocol Negotiation,
53 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
54 disabled with a no-npn flag to config or Configure. Code donated
56 [Adam Langley <agl@google.com> and Ben Laurie]
58 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
59 all platforms. Move ssize_t definition from e_os.h to the public
60 header file e_os2.h as it now appears in public header file cms.h
63 *) New function OPENSSL_gmtime_diff to find the difference in days
64 and seconds between two tm structures. This will be used to provide
65 additional functionality for ASN1_TIME.
68 *) New -sigopt option to the ca, req and x509 utilities. Additional
69 signature parameters can be passed using this option and in
73 *) Add RSA PSS signing function. This will generate and set the
74 appropriate AlgorithmIdentifiers for PSS based on those in the
75 corresponding EVP_MD_CTX structure. No application support yet.
78 *) Support for companion algorithm specific ASN1 signing routines.
79 New function ASN1_item_sign_ctx() signs a pre-initialised
80 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
81 the appropriate parameters.
84 *) Add new algorithm specific ASN1 verification initialisation function
85 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
86 handling will be the same no matter what EVP_PKEY_METHOD is used.
87 Add a PSS handler to support verification of PSS signatures: checked
88 against a number of sample certificates.
91 *) Add signature printing for PSS. Add PSS OIDs.
92 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
94 *) Add algorithm specific signature printing. An individual ASN1 method
95 can now print out signatures instead of the standard hex dump.
97 More complex signatures (e.g. PSS) can print out more meaningful
98 information. Include DSA version that prints out the signature
102 *) Add -trusted_first option which attempts to find certificates in the
103 trusted store even if an untrusted chain is also supplied.
106 *) Initial experimental support for explicitly trusted non-root CAs.
107 OpenSSL still tries to build a complete chain to a root but if an
108 intermediate CA has a trust setting included that is used. The first
109 setting is used: whether to trust or reject.
112 *) New -verify_name option in command line utilities to set verification
116 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
117 Add CMAC pkey methods.
120 *) Experiemental regnegotiation in s_server -www mode. If the client
121 browses /reneg connection is renegotiated. If /renegcert it is
122 renegotiated requesting a certificate.
125 *) Add an "external" session cache for debugging purposes to s_server. This
126 should help trace issues which normally are only apparent in deployed
127 multi-process servers.
130 *) Experiemental password based recipient info support for CMS library:
131 implementing RFC3211.
134 *) Split password based encryption into PBES2 and PBKDF2 functions. This
135 neatly separates the code into cipher and PBE sections and is required
136 for some algorithms that split PBES2 into separate pieces (such as
140 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
141 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
142 BIO_set_cipher() and some obscure PEM functions were changed so they
143 can now return an error. The RAND changes required a change to the
144 RAND_METHOD structure.
147 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
148 a gcc attribute to warn if the result of a function is ignored. This
149 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
150 whose return value is often ignored.
153 Changes between 1.0.0d and 1.0.1 [xx XXX xxxx]
155 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
158 *) Add EC_GFp_nistp224_method(), a 64-bit optimized implementation for
159 elliptic curve NIST-P224 with constant-time single point multiplication on
160 typical inputs. EC_GROUP_new_by_curve_name() will automatically use this
161 (while EC_GROUP_new_curve_GFp() currently won't and prefers the more
162 flexible implementations).
164 The implementation requires support for the nonstandard type __uint128_t,
165 and so is disabled by default. To include this in your build of OpenSSL,
166 use -DEC_NISTP224_64_GCC_128 on the Configure (or config) command line,
167 and run "make depend" (or "make update").
168 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
170 *) Permit abbreviated handshakes when renegotiating using the function
171 SSL_renegotiate_abbreviated().
172 [Robin Seggelmann <seggelmann@fh-muenster.de>]
174 *) Add call to ENGINE_register_all_complete() to
175 ENGINE_load_builtin_engines(), so some implementations get used
176 automatically instead of needing explicit application support.
179 *) Add support for TLS key exporter as described in RFC5705.
180 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
182 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
183 a few changes are required:
185 Add SSL_OP_NO_TLSv1_1 flag.
187 Update version checking logic to handle version 1.1.
188 Add explicit IV handling (ported from DTLS code).
189 Add command line options to s_client/s_server.
192 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
194 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
195 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
197 *) Fix bug in string printing code: if *any* escaping is enabled we must
198 escape the escape character (backslash) or the resulting string is
202 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
204 *) Disable code workaround for ancient and obsolete Netscape browsers
205 and servers: an attacker can use it in a ciphersuite downgrade attack.
206 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
209 *) Fixed J-PAKE implementation error, originally discovered by
210 Sebastien Martini, further info and confirmation from Stefan
211 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
214 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
216 *) Fix extension code to avoid race conditions which can result in a buffer
217 overrun vulnerability: resumed sessions must not be modified as they can
218 be shared by multiple threads. CVE-2010-3864
221 *) Fix WIN32 build system to correctly link an ENGINE directory into
225 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
227 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
229 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
231 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
233 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
234 context. The operation can be customised via the ctrl mechanism in
235 case ENGINEs want to include additional functionality.
238 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
241 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
242 output hashes compatible with older versions of OpenSSL.
243 [Willy Weisz <weisz@vcpc.univie.ac.at>]
245 *) Fix compression algorithm handling: if resuming a session use the
246 compression algorithm of the resumed session instead of determining
247 it from client hello again. Don't allow server to change algorithm.
250 *) Add load_crls() function to apps tidying load_certs() too. Add option
251 to verify utility to allow additional CRLs to be included.
254 *) Update OCSP request code to permit adding custom headers to the request:
255 some responders need this.
258 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
260 [Julia Lawall <julia@diku.dk>]
262 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
263 needlessly dereferenced structures, used obsolete functions and
264 didn't handle all updated verify codes correctly.
267 *) Disable MD2 in the default configuration.
270 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
271 indicate the initial BIO being pushed or popped. This makes it possible
272 to determine whether the BIO is the one explicitly called or as a result
273 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
274 it handles reference counts correctly and doesn't zero out the I/O bio
275 when it is not being explicitly popped. WARNING: applications which
276 included workarounds for the old buggy behaviour will need to be modified
277 or they could free up already freed BIOs.
280 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
281 renaming to all platforms (within the 0.9.8 branch, this was
282 done conditionally on Netware platforms to avoid a name clash).
283 [Guenter <lists@gknw.net>]
285 *) Add ECDHE and PSK support to DTLS.
286 [Michael Tuexen <tuexen@fh-muenster.de>]
288 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
292 *) Add "missing" function EVP_MD_flags() (without this the only way to
293 retrieve a digest flags is by accessing the structure directly. Update
294 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
295 or cipher is registered as in the "from" argument. Print out all
296 registered digests in the dgst usage message instead of manually
297 attempting to work them out.
300 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
301 this allows the use of compression and extensions. Change default cipher
302 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
303 by default unless an application cipher string requests it.
306 *) Alter match criteria in PKCS12_parse(). It used to try to use local
307 key ids to find matching certificates and keys but some PKCS#12 files
308 don't follow the (somewhat unwritten) rules and this strategy fails.
309 Now just gather all certificates together and the first private key
310 then look for the first certificate that matches the key.
313 *) Support use of registered digest and cipher names for dgst and cipher
314 commands instead of having to add each one as a special case. So now
321 openssl dgst -sha256 foo
323 and this works for ENGINE based algorithms too.
327 *) Update Gost ENGINE to support parameter files.
328 [Victor B. Wagner <vitus@cryptocom.ru>]
330 *) Support GeneralizedTime in ca utility.
331 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
333 *) Enhance the hash format used for certificate directory links. The new
334 form uses the canonical encoding (meaning equivalent names will work
335 even if they aren't identical) and uses SHA1 instead of MD5. This form
336 is incompatible with the older format and as a result c_rehash should
337 be used to rebuild symbolic links.
340 *) Make PKCS#8 the default write format for private keys, replacing the
341 traditional format. This form is standardised, more secure and doesn't
342 include an implicit MD5 dependency.
345 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
346 committed to OpenSSL should pass this lot as a minimum.
349 *) Add session ticket override functionality for use by EAP-FAST.
350 [Jouni Malinen <j@w1.fi>]
352 *) Modify HMAC functions to return a value. Since these can be implemented
353 in an ENGINE errors can occur.
356 *) Type-checked OBJ_bsearch_ex.
359 *) Type-checked OBJ_bsearch. Also some constification necessitated
360 by type-checking. Still to come: TXT_DB, bsearch(?),
361 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
365 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
366 seconds to a tm structure directly, instead of going through OS
367 specific date routines. This avoids any issues with OS routines such
368 as the year 2038 bug. New *_adj() functions for ASN1 time structures
369 and X509_time_adj_ex() to cover the extended range. The existing
370 X509_time_adj() is still usable and will no longer have any date issues.
373 *) Delta CRL support. New use deltas option which will attempt to locate
374 and search any appropriate delta CRLs available.
376 This work was sponsored by Google.
379 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
380 code and add additional score elements. Validate alternate CRL paths
381 as part of the CRL checking and indicate a new error "CRL path validation
382 error" in this case. Applications wanting additional details can use
383 the verify callback and check the new "parent" field. If this is not
384 NULL CRL path validation is taking place. Existing applications wont
385 see this because it requires extended CRL support which is off by
388 This work was sponsored by Google.
391 *) Support for freshest CRL extension.
393 This work was sponsored by Google.
396 *) Initial indirect CRL support. Currently only supported in the CRLs
397 passed directly and not via lookup. Process certificate issuer
398 CRL entry extension and lookup CRL entries by bother issuer name
399 and serial number. Check and process CRL issuer entry in IDP extension.
401 This work was sponsored by Google.
404 *) Add support for distinct certificate and CRL paths. The CRL issuer
405 certificate is validated separately in this case. Only enabled if
406 an extended CRL support flag is set: this flag will enable additional
407 CRL functionality in future.
409 This work was sponsored by Google.
412 *) Add support for policy mappings extension.
414 This work was sponsored by Google.
417 *) Fixes to pathlength constraint, self issued certificate handling,
418 policy processing to align with RFC3280 and PKITS tests.
420 This work was sponsored by Google.
423 *) Support for name constraints certificate extension. DN, email, DNS
424 and URI types are currently supported.
426 This work was sponsored by Google.
429 *) To cater for systems that provide a pointer-based thread ID rather
430 than numeric, deprecate the current numeric thread ID mechanism and
431 replace it with a structure and associated callback type. This
432 mechanism allows a numeric "hash" to be extracted from a thread ID in
433 either case, and on platforms where pointers are larger than 'long',
434 mixing is done to help ensure the numeric 'hash' is usable even if it
435 can't be guaranteed unique. The default mechanism is to use "&errno"
436 as a pointer-based thread ID to distinguish between threads.
438 Applications that want to provide their own thread IDs should now use
439 CRYPTO_THREADID_set_callback() to register a callback that will call
440 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
442 Note that ERR_remove_state() is now deprecated, because it is tied
443 to the assumption that thread IDs are numeric. ERR_remove_state(0)
444 to free the current thread's error state should be replaced by
445 ERR_remove_thread_state(NULL).
447 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
448 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
449 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
450 application was previously providing a numeric thread callback that
451 was inappropriate for distinguishing threads, then uniqueness might
452 have been obtained with &errno that happened immediately in the
453 intermediate development versions of OpenSSL; this is no longer the
454 case, the numeric thread callback will now override the automatic use
456 [Geoff Thorpe, with help from Bodo Moeller]
458 *) Initial support for different CRL issuing certificates. This covers a
459 simple case where the self issued certificates in the chain exist and
460 the real CRL issuer is higher in the existing chain.
462 This work was sponsored by Google.
465 *) Removed effectively defunct crypto/store from the build.
468 *) Revamp of STACK to provide stronger type-checking. Still to come:
469 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
470 ASN1_STRING, CONF_VALUE.
473 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
474 RAM on SSL connections. This option can save about 34k per idle SSL.
477 *) Revamp of LHASH to provide stronger type-checking. Still to come:
478 STACK, TXT_DB, bsearch, qsort.
481 *) Initial support for Cryptographic Message Syntax (aka CMS) based
482 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
483 support for data, signedData, compressedData, digestedData and
484 encryptedData, envelopedData types included. Scripts to check against
485 RFC4134 examples draft and interop and consistency checks of many
486 content types and variants.
489 *) Add options to enc utility to support use of zlib compression BIO.
492 *) Extend mk1mf to support importing of options and assembly language
493 files from Configure script, currently only included in VC-WIN32.
494 The assembly language rules can now optionally generate the source
495 files from the associated perl scripts.
498 *) Implement remaining functionality needed to support GOST ciphersuites.
499 Interop testing has been performed using CryptoPro implementations.
500 [Victor B. Wagner <vitus@cryptocom.ru>]
502 *) s390x assembler pack.
505 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
509 *) Implement Opaque PRF Input TLS extension as specified in
510 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
511 official specification yet and no extension type assignment by
512 IANA exists, this extension (for now) will have to be explicitly
513 enabled when building OpenSSL by providing the extension number
514 to use. For example, specify an option
516 -DTLSEXT_TYPE_opaque_prf_input=0x9527
518 to the "config" or "Configure" script to enable the extension,
519 assuming extension number 0x9527 (which is a completely arbitrary
520 and unofficial assignment based on the MD5 hash of the Internet
521 Draft). Note that by doing so, you potentially lose
522 interoperability with other TLS implementations since these might
523 be using the same extension number for other purposes.
525 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
526 opaque PRF input value to use in the handshake. This will create
527 an interal copy of the length-'len' string at 'src', and will
528 return non-zero for success.
530 To get more control and flexibility, provide a callback function
533 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
534 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
538 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
541 Callback function 'cb' will be called in handshakes, and is
542 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
543 Argument 'arg' is for application purposes (the value as given to
544 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
545 be provided to the callback function). The callback function
546 has to return non-zero to report success: usually 1 to use opaque
547 PRF input just if possible, or 2 to enforce use of the opaque PRF
548 input. In the latter case, the library will abort the handshake
549 if opaque PRF input is not successfully negotiated.
551 Arguments 'peerinput' and 'len' given to the callback function
552 will always be NULL and 0 in the case of a client. A server will
553 see the client's opaque PRF input through these variables if
554 available (NULL and 0 otherwise). Note that if the server
555 provides an opaque PRF input, the length must be the same as the
556 length of the client's opaque PRF input.
558 Note that the callback function will only be called when creating
559 a new session (session resumption can resume whatever was
560 previously negotiated), and will not be called in SSL 2.0
561 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
562 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
563 for applications that need to enforce opaque PRF input.
567 *) Update ssl code to support digests other than SHA1+MD5 for handshake
570 [Victor B. Wagner <vitus@cryptocom.ru>]
572 *) Add RFC4507 support to OpenSSL. This includes the corrections in
573 RFC4507bis. The encrypted ticket format is an encrypted encoded
574 SSL_SESSION structure, that way new session features are automatically
577 If a client application caches session in an SSL_SESSION structure
578 support is transparent because tickets are now stored in the encoded
581 The SSL_CTX structure automatically generates keys for ticket
582 protection in servers so again support should be possible
583 with no application modification.
585 If a client or server wishes to disable RFC4507 support then the option
586 SSL_OP_NO_TICKET can be set.
588 Add a TLS extension debugging callback to allow the contents of any client
589 or server extensions to be examined.
591 This work was sponsored by Google.
594 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
595 OpenSSL should now compile cleanly on gcc 4.2
596 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
598 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
599 support including streaming MAC support: this is required for GOST
601 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
603 *) Add option -stream to use PKCS#7 streaming in smime utility. New
604 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
605 to output in BER and PEM format.
608 *) Experimental support for use of HMAC via EVP_PKEY interface. This
609 allows HMAC to be handled via the EVP_DigestSign*() interface. The
610 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
611 ENGINE support for HMAC keys which are unextractable. New -mac and
612 -macopt options to dgst utility.
615 *) New option -sigopt to dgst utility. Update dgst to use
616 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
617 alternative signing paramaters such as X9.31 or PSS in the dgst
621 *) Change ssl_cipher_apply_rule(), the internal function that does
622 the work each time a ciphersuite string requests enabling
623 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
624 removing ("!foo+bar") a class of ciphersuites: Now it maintains
625 the order of disabled ciphersuites such that those ciphersuites
626 that most recently went from enabled to disabled not only stay
627 in order with respect to each other, but also have higher priority
628 than other disabled ciphersuites the next time ciphersuites are
631 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
632 the same ciphersuites as with "HIGH" alone, but in a specific
633 order where the PSK ciphersuites come first (since they are the
634 most recently disabled ciphersuites when "HIGH" is parsed).
636 Also, change ssl_create_cipher_list() (using this new
637 funcionality) such that between otherwise identical
638 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
642 *) Change ssl_create_cipher_list() so that it automatically
643 arranges the ciphersuites in reasonable order before starting
644 to process the rule string. Thus, the definition for "DEFAULT"
645 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
646 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
647 This makes it much easier to arrive at a reasonable default order
648 in applications for which anonymous ciphers are OK (meaning
649 that you can't actually use DEFAULT).
650 [Bodo Moeller; suggested by Victor Duchovni]
652 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
653 processing) into multiple integers instead of setting
654 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
655 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
656 (These masks as well as the individual bit definitions are hidden
657 away into the non-exported interface ssl/ssl_locl.h, so this
658 change to the definition of the SSL_CIPHER structure shouldn't
659 affect applications.) This give us more bits for each of these
660 categories, so there is no longer a need to coagulate AES128 and
661 AES256 into a single algorithm bit, and to coagulate Camellia128
662 and Camellia256 into a single algorithm bit, which has led to all
665 Thus, among other things, the kludge introduced in 0.9.7m and
666 0.9.8e for masking out AES256 independently of AES128 or masking
667 out Camellia256 independently of AES256 is not needed here in 0.9.9.
669 With the change, we also introduce new ciphersuite aliases that
670 so far were missing: "AES128", "AES256", "CAMELLIA128", and
674 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
675 Use the leftmost N bytes of the signature input if the input is
676 larger than the prime q (with N being the size in bytes of q).
679 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
680 it yet and it is largely untested.
683 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
686 *) Initial incomplete changes to avoid need for function casts in OpenSSL
687 some compilers (gcc 4.2 and later) reject their use. Safestack is
688 reimplemented. Update ASN1 to avoid use of legacy functions.
691 *) Win32/64 targets are linked with Winsock2.
694 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
695 to external functions. This can be used to increase CRL handling
696 efficiency especially when CRLs are very large by (for example) storing
697 the CRL revoked certificates in a database.
700 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
701 new CRLs added to a directory can be used. New command line option
702 -verify_return_error to s_client and s_server. This causes real errors
703 to be returned by the verify callback instead of carrying on no matter
704 what. This reflects the way a "real world" verify callback would behave.
707 *) GOST engine, supporting several GOST algorithms and public key formats.
708 Kindly donated by Cryptocom.
711 *) Partial support for Issuing Distribution Point CRL extension. CRLs
712 partitioned by DP are handled but no indirect CRL or reason partitioning
713 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
714 selected via a scoring technique which handles IDP and AKID in CRLs.
717 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
718 will ultimately be used for all verify operations: this will remove the
719 X509_STORE dependency on certificate verification and allow alternative
720 lookup methods. X509_STORE based implementations of these two callbacks.
723 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
724 Modify get_crl() to find a valid (unexpired) CRL if possible.
727 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
728 this would be called X509_CRL_cmp() but that name is already used by
729 a function that just compares CRL issuer names. Cache several CRL
730 extensions in X509_CRL structure and cache CRLDP in X509.
733 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
734 this maps equivalent X509_NAME structures into a consistent structure.
735 Name comparison can then be performed rapidly using memcmp().
738 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
742 *) Allow digests to supply their own micalg string for S/MIME type using
743 the ctrl EVP_MD_CTRL_MICALG.
746 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
747 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
748 ctrl. It can then customise the structure before and/or after signing
752 *) New function OBJ_add_sigid() to allow application defined signature OIDs
753 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
754 to free up any added signature OIDs.
757 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
758 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
759 digest and cipher tables. New options added to openssl utility:
760 list-message-digest-algorithms and list-cipher-algorithms.
763 *) Change the array representation of binary polynomials: the list
764 of degrees of non-zero coefficients is now terminated with -1.
765 Previously it was terminated with 0, which was also part of the
766 value; thus, the array representation was not applicable to
767 polynomials where t^0 has coefficient zero. This change makes
768 the array representation useful in a more general context.
771 *) Various modifications and fixes to SSL/TLS cipher string
772 handling. For ECC, the code now distinguishes between fixed ECDH
773 with RSA certificates on the one hand and with ECDSA certificates
774 on the other hand, since these are separate ciphersuites. The
775 unused code for Fortezza ciphersuites has been removed.
777 For consistency with EDH, ephemeral ECDH is now called "EECDH"
778 (not "ECDHE"). For consistency with the code for DH
779 certificates, use of ECDH certificates is now considered ECDH
780 authentication, not RSA or ECDSA authentication (the latter is
781 merely the CA's signing algorithm and not actively used in the
784 The temporary ciphersuite alias "ECCdraft" is no longer
785 available, and ECC ciphersuites are no longer excluded from "ALL"
786 and "DEFAULT". The following aliases now exist for RFC 4492
787 ciphersuites, most of these by analogy with the DH case:
789 kECDHr - ECDH cert, signed with RSA
790 kECDHe - ECDH cert, signed with ECDSA
791 kECDH - ECDH cert (signed with either RSA or ECDSA)
792 kEECDH - ephemeral ECDH
793 ECDH - ECDH cert or ephemeral ECDH
799 AECDH - anonymous ECDH
800 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
804 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
805 Use correct micalg parameters depending on digest(s) in signed message.
808 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
809 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
812 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
813 an engine to register a method. Add ENGINE lookups for methods and
814 functional reference processing.
817 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
818 EVP_{Sign,Verify}* which allow an application to customise the signature
822 *) New -resign option to smime utility. This adds one or more signers
823 to an existing PKCS#7 signedData structure. Also -md option to use an
824 alternative message digest algorithm for signing.
827 *) Tidy up PKCS#7 routines and add new functions to make it easier to
828 create PKCS7 structures containing multiple signers. Update smime
829 application to support multiple signers.
832 *) New -macalg option to pkcs12 utility to allow setting of an alternative
836 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
837 Reorganize PBE internals to lookup from a static table using NIDs,
838 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
839 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
840 PRF which will be automatically used with PBES2.
843 *) Replace the algorithm specific calls to generate keys in "req" with the
847 *) Update PKCS#7 enveloped data routines to use new API. This is now
848 supported by any public key method supporting the encrypt operation. A
849 ctrl is added to allow the public key algorithm to examine or modify
850 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
854 *) Add a ctrl to asn1 method to allow a public key algorithm to express
855 a default digest type to use. In most cases this will be SHA1 but some
856 algorithms (such as GOST) need to specify an alternative digest. The
857 return value indicates how strong the prefernce is 1 means optional and
858 2 is mandatory (that is it is the only supported type). Modify
859 ASN1_item_sign() to accept a NULL digest argument to indicate it should
860 use the default md. Update openssl utilities to use the default digest
861 type for signing if it is not explicitly indicated.
864 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
865 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
866 signing method from the key type. This effectively removes the link
867 between digests and public key types.
870 *) Add an OID cross reference table and utility functions. Its purpose is to
871 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
872 rsaEncryption. This will allow some of the algorithm specific hackery
873 needed to use the correct OID to be removed.
876 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
877 structures for PKCS7_sign(). They are now set up by the relevant public
881 *) Add provisional EC pkey method with support for ECDSA and ECDH.
884 *) Add support for key derivation (agreement) in the API, DH method and
888 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
889 public and private key formats. As a side effect these add additional
890 command line functionality not previously available: DSA signatures can be
891 generated and verified using pkeyutl and DH key support and generation in
896 [Oliver Tappe <zooey@hirschkaefer.de>]
898 *) New make target "install_html_docs" installs HTML renditions of the
900 [Oliver Tappe <zooey@hirschkaefer.de>]
902 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
903 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
904 support key and parameter generation and add initial key generation
905 functionality for RSA.
908 *) Add functions for main EVP_PKEY_method operations. The undocumented
909 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
910 EVP_PKEY_{encrypt,decrypt}_old.
913 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
914 key API, doesn't do much yet.
917 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
918 public key algorithms. New option to openssl utility:
919 "list-public-key-algorithms" to print out info.
922 *) Implement the Supported Elliptic Curves Extension for
923 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
926 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
927 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
930 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
931 utilities such as rsa, dsa, dsaparam etc except they process any key
935 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
936 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
937 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
941 *) Initial support for pluggable public key ASN1.
942 De-spaghettify the public key ASN1 handling. Move public and private
943 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
944 algorithm specific handling to a single module within the relevant
945 algorithm directory. Add functions to allow (near) opaque processing
946 of public and private key structures.
949 *) Implement the Supported Point Formats Extension for
950 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
953 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
954 for the psk identity [hint] and the psk callback functions to the
955 SSL_SESSION, SSL and SSL_CTX structure.
958 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
962 SSL_CTX_use_psk_identity_hint
963 SSL_get_psk_identity_hint
965 SSL_use_psk_identity_hint
967 [Mika Kousa and Pasi Eronen of Nokia Corporation]
969 *) Add RFC 3161 compliant time stamp request creation, response generation
970 and response verification functionality.
971 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
973 *) Add initial support for TLS extensions, specifically for the server_name
974 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
975 have new members for a host name. The SSL data structure has an
976 additional member SSL_CTX *initial_ctx so that new sessions can be
977 stored in that context to allow for session resumption, even after the
978 SSL has been switched to a new SSL_CTX in reaction to a client's
979 server_name extension.
981 New functions (subject to change):
984 SSL_get_servername_type()
987 New CTRL codes and macros (subject to change):
989 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
990 - SSL_CTX_set_tlsext_servername_callback()
991 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
992 - SSL_CTX_set_tlsext_servername_arg()
993 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
995 openssl s_client has a new '-servername ...' option.
997 openssl s_server has new options '-servername_host ...', '-cert2 ...',
998 '-key2 ...', '-servername_fatal' (subject to change). This allows
999 testing the HostName extension for a specific single host name ('-cert'
1000 and '-key' remain fallbacks for handshakes without HostName
1001 negotiation). If the unrecogninzed_name alert has to be sent, this by
1002 default is a warning; it becomes fatal with the '-servername_fatal'
1005 [Peter Sylvester, Remy Allais, Christophe Renou]
1007 *) Whirlpool hash implementation is added.
1010 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1011 bn(64,32). Because of instruction set limitations it doesn't have
1012 any negative impact on performance. This was done mostly in order
1013 to make it possible to share assembler modules, such as bn_mul_mont
1014 implementations, between 32- and 64-bit builds without hassle.
1017 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1018 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1022 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1023 dedicated Montgomery multiplication procedure, is introduced.
1024 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1025 "64-bit" performance on certain 32-bit targets.
1028 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1029 in SSL structures. New SSL ctrl to set maximum send fragment size.
1030 Save memory by seeting the I/O buffer sizes dynamically instead of
1031 using the maximum available value.
1034 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1035 in addition to the text details.
1038 *) Very, very preliminary EXPERIMENTAL support for printing of general
1039 ASN1 structures. This currently produces rather ugly output and doesn't
1040 handle several customised structures at all.
1043 *) Integrated support for PVK file format and some related formats such
1044 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1045 these in the 'rsa' and 'dsa' utilities.
1048 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1051 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1052 place for the (very old) "NETSCAPE" format certificates which are now
1053 handled using new ASN1 code equivalents.
1056 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1057 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1058 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1061 *) Modify CRL distribution points extension code to print out previously
1062 unsupported fields. Enhance extension setting code to allow setting of
1066 *) Add print and set support for Issuing Distribution Point CRL extension.
1069 *) Change 'Configure' script to enable Camellia by default.
1072 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1074 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1075 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1077 *) Fix bug in string printing code: if *any* escaping is enabled we must
1078 escape the escape character (backslash) or the resulting string is
1082 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1084 *) Disable code workaround for ancient and obsolete Netscape browsers
1085 and servers: an attacker can use it in a ciphersuite downgrade attack.
1086 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1089 *) Fixed J-PAKE implementation error, originally discovered by
1090 Sebastien Martini, further info and confirmation from Stefan
1091 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1094 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1096 *) Fix extension code to avoid race conditions which can result in a buffer
1097 overrun vulnerability: resumed sessions must not be modified as they can
1098 be shared by multiple threads. CVE-2010-3864
1101 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1104 *) Don't reencode certificate when calculating signature: cache and use
1105 the original encoding instead. This makes signature verification of
1106 some broken encodings work correctly.
1109 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1110 is also one of the inputs.
1111 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1113 *) Don't repeatedly append PBE algorithms to table if they already exist.
1114 Sort table on each new add. This effectively makes the table read only
1115 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1119 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1121 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1124 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1125 access or freeing data twice (CVE-2010-0742)
1126 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1128 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1129 common in certificates and some applications which only call
1130 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1134 Reduce copying into .apps and .test in makevms.com
1135 Don't try to use blank CA certificate in CA.com
1136 Allow use of C files from original directories in maketests.com
1137 [Steven M. Schweda" <sms@antinode.info>]
1139 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1141 *) When rejecting SSL/TLS records due to an incorrect version number, never
1142 update s->server with a new major version number. As of
1143 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1144 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1145 the previous behavior could result in a read attempt at NULL when
1146 receiving specific incorrect SSL/TLS records once record payload
1147 protection is active. (CVE-2010-0740)
1148 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1150 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1151 could be crashed if the relevant tables were not present (e.g. chrooted).
1152 [Tomas Hoger <thoger@redhat.com>]
1154 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1156 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1157 [Martin Olsson, Neel Mehta]
1159 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1160 accommodate for stack sorting, always a write lock!).
1163 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1164 excessive delays in the RAND_poll(): over a minute. As a workaround
1165 include a time check in the inner Heap32Next loop too.
1168 *) The code that handled flushing of data in SSL/TLS originally used the
1169 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1170 the problem outlined in PR#1949. The fix suggested there however can
1171 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1172 of Apache). So instead simplify the code to flush unconditionally.
1173 This should be fine since flushing with no data to flush is a no op.
1176 *) Handle TLS versions 2.0 and later properly and correctly use the
1177 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1178 off ancient servers have a habit of sticking around for a while...
1181 *) Modify compression code so it frees up structures without using the
1182 ex_data callbacks. This works around a problem where some applications
1183 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1184 restarting) then use compression (e.g. SSL with compression) later.
1185 This results in significant per-connection memory leaks and
1186 has caused some security issues including CVE-2008-1678 and
1190 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1191 change when encrypting or decrypting.
1194 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1195 connect and renegotiate with servers which do not support RI.
1196 Until RI is more widely deployed this option is enabled by default.
1199 *) Add "missing" ssl ctrls to clear options and mode.
1202 *) If client attempts to renegotiate and doesn't support RI respond with
1203 a no_renegotiation alert as required by RFC5746. Some renegotiating
1204 TLS clients will continue a connection gracefully when they receive
1205 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1206 waiting for a server hello which it will never receive. Now we treat a
1207 received no_renegotiation alert as a fatal error. This is because
1208 applications requesting a renegotiation might well expect it to succeed
1209 and would have no code in place to handle the server denying it so the
1210 only safe thing to do is to terminate the connection.
1213 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1214 peer supports secure renegotiation and 0 otherwise. Print out peer
1215 renegotiation support in s_client/s_server.
1218 *) Replace the highly broken and deprecated SPKAC certification method with
1219 the updated NID creation version. This should correctly handle UTF8.
1222 *) Implement RFC5746. Re-enable renegotiation but require the extension
1223 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1224 turns out to be a bad idea. It has been replaced by
1225 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1226 SSL_CTX_set_options(). This is really not recommended unless you
1227 know what you are doing.
1228 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1230 *) Fixes to stateless session resumption handling. Use initial_ctx when
1231 issuing and attempting to decrypt tickets in case it has changed during
1232 servername handling. Use a non-zero length session ID when attempting
1233 stateless session resumption: this makes it possible to determine if
1234 a resumption has occurred immediately after receiving server hello
1235 (several places in OpenSSL subtly assume this) instead of later in
1239 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1240 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1241 fixes for a few places where the return code is not checked
1243 [Julia Lawall <julia@diku.dk>]
1245 *) Add --strict-warnings option to Configure script to include devteam
1246 warnings in other configurations.
1249 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1250 makes it possible to install openssl libraries in locations which
1251 have names other than "lib", for example "/usr/lib64" which some
1253 [Steve Henson, based on patch from Jeremy Utley]
1255 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1256 X690 8.9.12 and can produce some misleading textual output of OIDs.
1257 [Steve Henson, reported by Dan Kaminsky]
1259 *) Delete MD2 from algorithm tables. This follows the recommendation in
1260 several standards that it is not used in new applications due to
1261 several cryptographic weaknesses. For binary compatibility reasons
1262 the MD2 API is still compiled in by default.
1265 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1269 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1270 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1272 [Guenter <lists@gknw.net>]
1274 *) Fix the server certificate chain building code to use X509_verify_cert(),
1275 it used to have an ad-hoc builder which was unable to cope with anything
1276 other than a simple chain.
1277 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1279 *) Don't check self signed certificate signatures in X509_verify_cert()
1280 by default (a flag can override this): it just wastes time without
1281 adding any security. As a useful side effect self signed root CAs
1282 with non-FIPS digests are now usable in FIPS mode.
1285 *) In dtls1_process_out_of_seq_message() the check if the current message
1286 is already buffered was missing. For every new message was memory
1287 allocated, allowing an attacker to perform an denial of service attack
1288 with sending out of seq handshake messages until there is no memory
1289 left. Additionally every future messege was buffered, even if the
1290 sequence number made no sense and would be part of another handshake.
1291 So only messages with sequence numbers less than 10 in advance will be
1292 buffered. (CVE-2009-1378)
1293 [Robin Seggelmann, discovered by Daniel Mentz]
1295 *) Records are buffered if they arrive with a future epoch to be
1296 processed after finishing the corresponding handshake. There is
1297 currently no limitation to this buffer allowing an attacker to perform
1298 a DOS attack with sending records with future epochs until there is no
1299 memory left. This patch adds the pqueue_size() function to detemine
1300 the size of a buffer and limits the record buffer to 100 entries.
1302 [Robin Seggelmann, discovered by Daniel Mentz]
1304 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1305 parent structure is freed. (CVE-2009-1379)
1308 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1309 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1312 [Ilya O. <vrghost@gmail.com>]
1314 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1316 *) Disable renegotiation completely - this fixes a severe security
1317 problem (CVE-2009-3555) at the cost of breaking all
1318 renegotiation. Renegotiation can be re-enabled by setting
1319 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1320 run-time. This is really not recommended unless you know what
1324 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1326 *) Don't set val to NULL when freeing up structures, it is freed up by
1327 underlying code. If sizeof(void *) > sizeof(long) this can result in
1328 zeroing past the valid field. (CVE-2009-0789)
1329 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1331 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1332 checked correctly. This would allow some invalid signed attributes to
1333 appear to verify correctly. (CVE-2009-0591)
1334 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1336 *) Reject UniversalString and BMPString types with invalid lengths. This
1337 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1338 a legal length. (CVE-2009-0590)
1341 *) Set S/MIME signing as the default purpose rather than setting it
1342 unconditionally. This allows applications to override it at the store
1346 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1347 to handle some structures.
1350 *) Improve efficiency of mem_gets: don't search whole buffer each time
1352 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1354 *) New -hex option for openssl rand.
1357 *) Print out UTF8String and NumericString when parsing ASN1.
1360 *) Support NumericString type for name components.
1363 *) Allow CC in the environment to override the automatically chosen
1364 compiler. Note that nothing is done to ensure flags work with the
1368 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1370 *) Properly check EVP_VerifyFinal() and similar return values
1372 [Ben Laurie, Bodo Moeller, Google Security Team]
1374 *) Enable TLS extensions by default.
1377 *) Allow the CHIL engine to be loaded, whether the application is
1378 multithreaded or not. (This does not release the developer from the
1379 obligation to set up the dynamic locking callbacks.)
1380 [Sander Temme <sander@temme.net>]
1382 *) Use correct exit code if there is an error in dgst command.
1383 [Steve Henson; problem pointed out by Roland Dirlewanger]
1385 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1386 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1389 *) Add experimental JPAKE support, including demo authentication in
1390 s_client and s_server.
1393 *) Set the comparison function in v3_addr_canonize().
1394 [Rob Austein <sra@hactrn.net>]
1396 *) Add support for XMPP STARTTLS in s_client.
1397 [Philip Paeps <philip@freebsd.org>]
1399 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1400 to ensure that even with this option, only ciphersuites in the
1401 server's preference list will be accepted. (Note that the option
1402 applies only when resuming a session, so the earlier behavior was
1403 just about the algorithm choice for symmetric cryptography.)
1406 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1408 *) Fix NULL pointer dereference if a DTLS server received
1409 ChangeCipherSpec as first record (CVE-2009-1386).
1412 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1413 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1416 *) The fix in 0.9.8c that supposedly got rid of unsafe
1417 double-checked locking was incomplete for RSA blinding,
1418 addressing just one layer of what turns out to have been
1419 doubly unsafe triple-checked locking.
1421 So now fix this for real by retiring the MONT_HELPER macro
1422 in crypto/rsa/rsa_eay.c.
1424 [Bodo Moeller; problem pointed out by Marius Schilder]
1426 *) Various precautionary measures:
1428 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1430 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1431 (NB: This would require knowledge of the secret session ticket key
1432 to exploit, in which case you'd be SOL either way.)
1434 - Change bn_nist.c so that it will properly handle input BIGNUMs
1435 outside the expected range.
1437 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1440 [Neel Mehta, Bodo Moeller]
1442 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1443 the load fails. Useful for distros.
1444 [Ben Laurie and the FreeBSD team]
1446 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1449 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1452 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1454 This work was sponsored by Logica.
1457 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1458 keystores. Support for SSL/TLS client authentication too.
1459 Not compiled unless enable-capieng specified to Configure.
1461 This work was sponsored by Logica.
1464 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1465 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1466 attribute creation routines such as certifcate requests and PKCS#12
1470 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1472 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1473 handshake which could lead to a cilent crash as found using the
1474 Codenomicon TLS test suite (CVE-2008-1672)
1475 [Steve Henson, Mark Cox]
1477 *) Fix double free in TLS server name extensions which could lead to
1478 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1481 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1483 Clear the error queue to ensure that error entries left from
1484 older function calls do not interfere with the correct operation.
1485 [Lutz Jaenicke, Erik de Castro Lopo]
1487 *) Remove root CA certificates of commercial CAs:
1489 The OpenSSL project does not recommend any specific CA and does not
1490 have any policy with respect to including or excluding any CA.
1491 Therefore it does not make any sense to ship an arbitrary selection
1492 of root CA certificates with the OpenSSL software.
1495 *) RSA OAEP patches to fix two separate invalid memory reads.
1496 The first one involves inputs when 'lzero' is greater than
1497 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1498 before the beginning of from). The second one involves inputs where
1499 the 'db' section contains nothing but zeroes (there is a one-byte
1500 invalid read after the end of 'db').
1501 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1503 *) Partial backport from 0.9.9-dev:
1505 Introduce bn_mul_mont (dedicated Montgomery multiplication
1506 procedure) as a candidate for BIGNUM assembler implementation.
1507 While 0.9.9-dev uses assembler for various architectures, only
1508 x86_64 is available by default here in the 0.9.8 branch, and
1509 32-bit x86 is available through a compile-time setting.
1511 To try the 32-bit x86 assembler implementation, use Configure
1512 option "enable-montasm" (which exists only for this backport).
1514 As "enable-montasm" for 32-bit x86 disclaims code stability
1515 anyway, in this constellation we activate additional code
1516 backported from 0.9.9-dev for further performance improvements,
1517 namely BN_from_montgomery_word. (To enable this otherwise,
1518 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1520 [Andy Polyakov (backport partially by Bodo Moeller)]
1522 *) Add TLS session ticket callback. This allows an application to set
1523 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1524 values. This is useful for key rollover for example where several key
1525 sets may exist with different names.
1528 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1529 This was broken until now in 0.9.8 releases, such that the only way
1530 a registered ENGINE could be used (assuming it initialises
1531 successfully on the host) was to explicitly set it as the default
1532 for the relevant algorithms. This is in contradiction with 0.9.7
1533 behaviour and the documentation. With this fix, when an ENGINE is
1534 registered into a given algorithm's table of implementations, the
1535 'uptodate' flag is reset so that auto-discovery will be used next
1536 time a new context for that algorithm attempts to select an
1538 [Ian Lister (tweaked by Geoff Thorpe)]
1540 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1541 implemention in the following ways:
1543 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1546 Lack of BER streaming support means one pass streaming processing is
1547 only supported if data is detached: setting the streaming flag is
1548 ignored for embedded content.
1550 CMS support is disabled by default and must be explicitly enabled
1551 with the enable-cms configuration option.
1554 *) Update the GMP engine glue to do direct copies between BIGNUM and
1555 mpz_t when openssl and GMP use the same limb size. Otherwise the
1556 existing "conversion via a text string export" trick is still used.
1557 [Paul Sheer <paulsheer@gmail.com>]
1559 *) Zlib compression BIO. This is a filter BIO which compressed and
1560 uncompresses any data passed through it.
1563 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1564 RFC3394 compatible AES key wrapping.
1567 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1568 sets string data without copying. X509_ALGOR_set0() and
1569 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1570 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1571 from an X509_ATTRIBUTE structure optionally checking it occurs only
1572 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1576 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1577 to get the expected BN_FLG_CONSTTIME behavior.
1578 [Bodo Moeller (Google)]
1582 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1583 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1584 - added some more tests to do_tests.pl
1585 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1586 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1587 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1588 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1589 - various changes to netware.pl to enable gcc-cross builds on Win32
1591 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1592 - various changes to fix missing prototype warnings
1593 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1594 - added AES, WHIRLPOOL and CPUID assembler code to build files
1595 - added missing AES assembler make rules to mk1mf.pl
1596 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1597 [Guenter Knauf <eflash@gmx.net>]
1599 *) Implement certificate status request TLS extension defined in RFC3546.
1600 A client can set the appropriate parameters and receive the encoded
1601 OCSP response via a callback. A server can query the supplied parameters
1602 and set the encoded OCSP response in the callback. Add simplified examples
1603 to s_client and s_server.
1606 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1608 *) Fix various bugs:
1609 + Binary incompatibility of ssl_ctx_st structure
1610 + DTLS interoperation with non-compliant servers
1611 + Don't call get_session_cb() without proposed session
1612 + Fix ia64 assembler code
1613 [Andy Polyakov, Steve Henson]
1615 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1617 *) DTLS Handshake overhaul. There were longstanding issues with
1618 OpenSSL DTLS implementation, which were making it impossible for
1619 RFC 4347 compliant client to communicate with OpenSSL server.
1620 Unfortunately just fixing these incompatibilities would "cut off"
1621 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1622 server keeps tolerating non RFC compliant syntax. The opposite is
1623 not true, 0.9.8f client can not communicate with earlier server.
1624 This update even addresses CVE-2007-4995.
1627 *) Changes to avoid need for function casts in OpenSSL: some compilers
1628 (gcc 4.2 and later) reject their use.
1629 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1632 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1633 RFC4507bis. The encrypted ticket format is an encrypted encoded
1634 SSL_SESSION structure, that way new session features are automatically
1637 If a client application caches session in an SSL_SESSION structure
1638 support is transparent because tickets are now stored in the encoded
1641 The SSL_CTX structure automatically generates keys for ticket
1642 protection in servers so again support should be possible
1643 with no application modification.
1645 If a client or server wishes to disable RFC4507 support then the option
1646 SSL_OP_NO_TICKET can be set.
1648 Add a TLS extension debugging callback to allow the contents of any client
1649 or server extensions to be examined.
1651 This work was sponsored by Google.
1654 *) Add initial support for TLS extensions, specifically for the server_name
1655 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1656 have new members for a host name. The SSL data structure has an
1657 additional member SSL_CTX *initial_ctx so that new sessions can be
1658 stored in that context to allow for session resumption, even after the
1659 SSL has been switched to a new SSL_CTX in reaction to a client's
1660 server_name extension.
1662 New functions (subject to change):
1664 SSL_get_servername()
1665 SSL_get_servername_type()
1668 New CTRL codes and macros (subject to change):
1670 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1671 - SSL_CTX_set_tlsext_servername_callback()
1672 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1673 - SSL_CTX_set_tlsext_servername_arg()
1674 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1676 openssl s_client has a new '-servername ...' option.
1678 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1679 '-key2 ...', '-servername_fatal' (subject to change). This allows
1680 testing the HostName extension for a specific single host name ('-cert'
1681 and '-key' remain fallbacks for handshakes without HostName
1682 negotiation). If the unrecogninzed_name alert has to be sent, this by
1683 default is a warning; it becomes fatal with the '-servername_fatal'
1686 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1688 *) Add AES and SSE2 assembly language support to VC++ build.
1691 *) Mitigate attack on final subtraction in Montgomery reduction.
1694 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1695 (which previously caused an internal error).
1698 *) Squeeze another 10% out of IGE mode when in != out.
1701 *) AES IGE mode speedup.
1702 [Dean Gaudet (Google)]
1704 *) Add the Korean symmetric 128-bit cipher SEED (see
1705 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1706 add SEED ciphersuites from RFC 4162:
1708 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1709 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1710 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1711 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1713 To minimize changes between patchlevels in the OpenSSL 0.9.8
1714 series, SEED remains excluded from compilation unless OpenSSL
1715 is configured with 'enable-seed'.
1716 [KISA, Bodo Moeller]
1718 *) Mitigate branch prediction attacks, which can be practical if a
1719 single processor is shared, allowing a spy process to extract
1720 information. For detailed background information, see
1721 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1722 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1723 and Necessary Software Countermeasures"). The core of the change
1724 are new versions BN_div_no_branch() and
1725 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1726 respectively, which are slower, but avoid the security-relevant
1727 conditional branches. These are automatically called by BN_div()
1728 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1729 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1730 remove a conditional branch.
1732 BN_FLG_CONSTTIME is the new name for the previous
1733 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1734 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1735 in the exponent causes BN_mod_exp_mont() to use the alternative
1736 implementation in BN_mod_exp_mont_consttime().) The old name
1737 remains as a deprecated alias.
1739 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1740 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1741 constant-time implementations for more than just exponentiation.
1742 Here too the old name is kept as a deprecated alias.
1744 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1745 the BN_BLINDING structure gets an independent copy of the
1746 modulus. This means that the previous "BIGNUM *m" argument to
1747 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1748 essentially becomes "const BIGNUM *m", although we can't actually
1749 change this in the header file before 0.9.9. It allows
1750 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1751 enable BN_FLG_CONSTTIME.
1753 [Matthew D Wood (Intel Corp)]
1755 *) In the SSL/TLS server implementation, be strict about session ID
1756 context matching (which matters if an application uses a single
1757 external cache for different purposes). Previously,
1758 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1759 set. This did ensure strict client verification, but meant that,
1760 with applications using a single external cache for quite
1761 different requirements, clients could circumvent ciphersuite
1762 restrictions for a given session ID context by starting a session
1763 in a different context.
1766 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1767 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1768 authentication-only ciphersuites.
1771 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1772 not complete and could lead to a possible single byte overflow
1773 (CVE-2007-5135) [Ben Laurie]
1775 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1777 *) Since AES128 and AES256 (and similarly Camellia128 and
1778 Camellia256) share a single mask bit in the logic of
1779 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1780 kludge to work properly if AES128 is available and AES256 isn't
1781 (or if Camellia128 is available and Camellia256 isn't).
1784 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1785 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1786 When a point or a seed is encoded in a BIT STRING, we need to
1787 prevent the removal of trailing zero bits to get the proper DER
1788 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1789 of a NamedBitList, for which trailing 0 bits need to be removed.)
1792 *) Have SSL/TLS server implementation tolerate "mismatched" record
1793 protocol version while receiving ClientHello even if the
1794 ClientHello is fragmented. (The server can't insist on the
1795 particular protocol version it has chosen before the ServerHello
1796 message has informed the client about his choice.)
1799 *) Add RFC 3779 support.
1800 [Rob Austein for ARIN, Ben Laurie]
1802 *) Load error codes if they are not already present instead of using a
1803 static variable. This allows them to be cleanly unloaded and reloaded.
1804 Improve header file function name parsing.
1807 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1808 or CAPABILITY handshake as required by RFCs.
1811 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1813 *) Introduce limits to prevent malicious keys being able to
1814 cause a denial of service. (CVE-2006-2940)
1815 [Steve Henson, Bodo Moeller]
1817 *) Fix ASN.1 parsing of certain invalid structures that can result
1818 in a denial of service. (CVE-2006-2937) [Steve Henson]
1820 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1821 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1823 *) Fix SSL client code which could crash if connecting to a
1824 malicious SSLv2 server. (CVE-2006-4343)
1825 [Tavis Ormandy and Will Drewry, Google Security Team]
1827 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1828 match only those. Before that, "AES256-SHA" would be interpreted
1829 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1830 the same strength classification in 0.9.7h) as we currently only
1831 have a single AES bit in the ciphersuite description bitmap.
1832 That change, however, also applied to ciphersuite strings such as
1833 "RC4-MD5" that intentionally matched multiple ciphersuites --
1834 namely, SSL 2.0 ciphersuites in addition to the more common ones
1835 from SSL 3.0/TLS 1.0.
1837 So we change the selection algorithm again: Naming an explicit
1838 ciphersuite selects this one ciphersuite, and any other similar
1839 ciphersuite (same bitmap) from *other* protocol versions.
1840 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1841 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1843 Since SSL 2.0 does not have any ciphersuites for which the
1844 128/256 bit distinction would be relevant, this works for now.
1845 The proper fix will be to use different bits for AES128 and
1846 AES256, which would have avoided the problems from the beginning;
1847 however, bits are scarce, so we can only do this in a new release
1848 (not just a patchlevel) when we can change the SSL_CIPHER
1849 definition to split the single 'unsigned long mask' bitmap into
1850 multiple values to extend the available space.
1854 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1856 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1857 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1859 *) Add AES IGE and biIGE modes.
1862 *) Change the Unix randomness entropy gathering to use poll() when
1863 possible instead of select(), since the latter has some
1864 undesirable limitations.
1865 [Darryl Miles via Richard Levitte and Bodo Moeller]
1867 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1868 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1869 cannot be implicitly activated as part of, e.g., the "AES" alias.
1870 However, please upgrade to OpenSSL 0.9.9[-dev] for
1871 non-experimental use of the ECC ciphersuites to get TLS extension
1872 support, which is required for curve and point format negotiation
1873 to avoid potential handshake problems.
1876 *) Disable rogue ciphersuites:
1878 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1879 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1880 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1882 The latter two were purportedly from
1883 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1886 Also deactivate the remaining ciphersuites from
1887 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1888 unofficial, and the ID has long expired.
1891 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1892 dual-core machines) and other potential thread-safety issues.
1895 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1896 versions), which is now available for royalty-free use
1897 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1898 Also, add Camellia TLS ciphersuites from RFC 4132.
1900 To minimize changes between patchlevels in the OpenSSL 0.9.8
1901 series, Camellia remains excluded from compilation unless OpenSSL
1902 is configured with 'enable-camellia'.
1905 *) Disable the padding bug check when compression is in use. The padding
1906 bug check assumes the first packet is of even length, this is not
1907 necessarily true if compresssion is enabled and can result in false
1908 positives causing handshake failure. The actual bug test is ancient
1909 code so it is hoped that implementations will either have fixed it by
1910 now or any which still have the bug do not support compression.
1913 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1915 *) When applying a cipher rule check to see if string match is an explicit
1916 cipher suite and only match that one cipher suite if it is.
1919 *) Link in manifests for VC++ if needed.
1920 [Austin Ziegler <halostatue@gmail.com>]
1922 *) Update support for ECC-based TLS ciphersuites according to
1923 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1924 TLS extensions, which are supported starting with the 0.9.9
1925 branch, not in the OpenSSL 0.9.8 branch).
1928 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1929 opaque EVP_CIPHER_CTX handling.
1932 *) Fixes and enhancements to zlib compression code. We now only use
1933 "zlib1.dll" and use the default __cdecl calling convention on Win32
1934 to conform with the standards mentioned here:
1935 http://www.zlib.net/DLL_FAQ.txt
1936 Static zlib linking now works on Windows and the new --with-zlib-include
1937 --with-zlib-lib options to Configure can be used to supply the location
1938 of the headers and library. Gracefully handle case where zlib library
1942 *) Several fixes and enhancements to the OID generation code. The old code
1943 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1944 handle numbers larger than ULONG_MAX, truncated printing and had a
1945 non standard OBJ_obj2txt() behaviour.
1948 *) Add support for building of engines under engine/ as shared libraries
1949 under VC++ build system.
1952 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1953 Hopefully, we will not see any false combination of paths any more.
1956 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1958 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1959 (part of SSL_OP_ALL). This option used to disable the
1960 countermeasure against man-in-the-middle protocol-version
1961 rollback in the SSL 2.0 server implementation, which is a bad
1962 idea. (CVE-2005-2969)
1964 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1965 for Information Security, National Institute of Advanced Industrial
1966 Science and Technology [AIST], Japan)]
1968 *) Add two function to clear and return the verify parameter flags.
1971 *) Keep cipherlists sorted in the source instead of sorting them at
1972 runtime, thus removing the need for a lock.
1975 *) Avoid some small subgroup attacks in Diffie-Hellman.
1976 [Nick Mathewson and Ben Laurie]
1978 *) Add functions for well-known primes.
1981 *) Extended Windows CE support.
1982 [Satoshi Nakamura and Andy Polyakov]
1984 *) Initialize SSL_METHOD structures at compile time instead of during
1985 runtime, thus removing the need for a lock.
1988 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1989 attempting to decrypt each encrypted key in turn. Add support to
1993 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1995 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1998 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2001 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2002 key into the same file any more.
2005 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2008 *) Add -utf8 command line and config file option to 'ca'.
2009 [Stefan <stf@udoma.org]
2011 *) Removed the macro des_crypt(), as it seems to conflict with some
2012 libraries. Use DES_crypt().
2015 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2016 involves renaming the source and generated shared-libs for
2017 both. The engines will accept the corrected or legacy ids
2018 ('ncipher' and '4758_cca' respectively) when binding. NB,
2019 this only applies when building 'shared'.
2020 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2022 *) Add attribute functions to EVP_PKEY structure. Modify
2023 PKCS12_create() to recognize a CSP name attribute and
2024 use it. Make -CSP option work again in pkcs12 utility.
2027 *) Add new functionality to the bn blinding code:
2028 - automatic re-creation of the BN_BLINDING parameters after
2029 a fixed number of uses (currently 32)
2030 - add new function for parameter creation
2031 - introduce flags to control the update behaviour of the
2032 BN_BLINDING parameters
2033 - hide BN_BLINDING structure
2034 Add a second BN_BLINDING slot to the RSA structure to improve
2035 performance when a single RSA object is shared among several
2039 *) Add support for DTLS.
2040 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2042 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2043 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2046 *) Remove buggy and incompletet DH cert support from
2047 ssl/ssl_rsa.c and ssl/s3_both.c
2050 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2051 the apps/openssl applications.
2054 *) Compile clean with "-Wall -Wmissing-prototypes
2055 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2056 DEBUG_SAFESTACK must also be set.
2059 *) Change ./Configure so that certain algorithms can be disabled by default.
2060 The new counterpiece to "no-xxx" is "enable-xxx".
2062 The patented RC5 and MDC2 algorithms will now be disabled unless
2063 "enable-rc5" and "enable-mdc2", respectively, are specified.
2065 (IDEA remains enabled despite being patented. This is because IDEA
2066 is frequently required for interoperability, and there is no license
2067 fee for non-commercial use. As before, "no-idea" can be used to
2068 avoid this algorithm.)
2072 *) Add processing of proxy certificates (see RFC 3820). This work was
2073 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2074 EGEE (Enabling Grids for E-science in Europe).
2077 *) RC4 performance overhaul on modern architectures/implementations, such
2078 as Intel P4, IA-64 and AMD64.
2081 *) New utility extract-section.pl. This can be used specify an alternative
2082 section number in a pod file instead of having to treat each file as
2083 a separate case in Makefile. This can be done by adding two lines to the
2086 =for comment openssl_section:XXX
2088 The blank line is mandatory.
2092 *) New arguments -certform, -keyform and -pass for s_client and s_server
2093 to allow alternative format key and certificate files and passphrase
2097 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2098 update associated structures and add various utility functions.
2100 Add new policy related verify parameters, include policy checking in
2101 standard verify code. Enhance 'smime' application with extra parameters
2102 to support policy checking and print out.
2105 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2106 Nehemiah processors. These extensions support AES encryption in hardware
2107 as well as RNG (though RNG support is currently disabled).
2108 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2110 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2113 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2114 [Andy Polyakov and a number of other people]
2116 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2117 implementation contributed by IBM.
2118 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2120 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2121 exponent rather than 'unsigned long'. There is a corresponding change to
2122 the new 'rsa_keygen' element of the RSA_METHOD structure.
2123 [Jelte Jansen, Geoff Thorpe]
2125 *) Functionality for creating the initial serial number file is now
2126 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2128 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2129 number file to 1, which is bound to cause problems. To avoid
2130 the problems while respecting compatibility between different 0.9.7
2131 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2132 CA.pl for serial number initialization. With the new release 0.9.8,
2133 we can fix the problem directly in the 'ca' utility.)
2136 *) Reduced header interdepencies by declaring more opaque objects in
2137 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2138 give fewer recursive includes, which could break lazy source code - so
2139 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2140 developers should define this symbol when building and using openssl to
2141 ensure they track the recommended behaviour, interfaces, [etc], but
2142 backwards-compatible behaviour prevails when this isn't defined.
2145 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2148 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2149 This will generate a random key of the appropriate length based on the
2150 cipher context. The EVP_CIPHER can provide its own random key generation
2151 routine to support keys of a specific form. This is used in the des and
2152 3des routines to generate a key of the correct parity. Update S/MIME
2153 code to use new functions and hence generate correct parity DES keys.
2154 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2155 valid (weak or incorrect parity).
2158 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2159 as looking them up. This is useful when the verified structure may contain
2160 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2161 present unless the new PKCS7_NO_CRL flag is asserted.
2164 *) Extend ASN1 oid configuration module. It now additionally accepts the
2167 shortName = some long name, 1.2.3.4
2170 *) Reimplemented the BN_CTX implementation. There is now no more static
2171 limitation on the number of variables it can handle nor the depth of the
2172 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2173 information can now expand as required, and rather than having a single
2174 static array of bignums, BN_CTX now uses a linked-list of such arrays
2175 allowing it to expand on demand whilst maintaining the usefulness of
2176 BN_CTX's "bundling".
2179 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2180 to allow all RSA operations to function using a single BN_CTX.
2183 *) Preliminary support for certificate policy evaluation and checking. This
2184 is initially intended to pass the tests outlined in "Conformance Testing
2185 of Relying Party Client Certificate Path Processing Logic" v1.07.
2188 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2189 remained unused and not that useful. A variety of other little bignum
2190 tweaks and fixes have also been made continuing on from the audit (see
2194 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2195 associated ASN1, EVP and SSL functions and old ASN1 macros.
2198 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2199 and this should never fail. So the return value from the use of
2200 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2201 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2204 *) BN_CTX_get() should return zero-valued bignums, providing the same
2205 initialised value as BN_new().
2206 [Geoff Thorpe, suggested by Ulf Möller]
2208 *) Support for inhibitAnyPolicy certificate extension.
2211 *) An audit of the BIGNUM code is underway, for which debugging code is
2212 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2213 is considered valid when processing BIGNUMs, and causes execution to
2214 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2215 further steps are taken to deliberately pollute unused data in BIGNUM
2216 structures to try and expose faulty code further on. For now, openssl will
2217 (in its default mode of operation) continue to tolerate the inconsistent
2218 forms that it has tolerated in the past, but authors and packagers should
2219 consider trying openssl and their own applications when compiled with
2220 these debugging symbols defined. It will help highlight potential bugs in
2221 their own code, and will improve the test coverage for OpenSSL itself. At
2222 some point, these tighter rules will become openssl's default to improve
2223 maintainability, though the assert()s and other overheads will remain only
2224 in debugging configurations. See bn.h for more details.
2225 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2227 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2228 that can only be obtained through BN_CTX_new() (which implicitly
2229 initialises it). The presence of this function only made it possible
2230 to overwrite an existing structure (and cause memory leaks).
2233 *) Because of the callback-based approach for implementing LHASH as a
2234 template type, lh_insert() adds opaque objects to hash-tables and
2235 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2236 to clean up those corresponding objects before destroying the hash table
2237 (and losing the object pointers). So some over-zealous constifications in
2238 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2239 objects as "const" and the lh_doall[_arg] callback wrappers are not
2240 prototyped to have "const" restrictions on the object pointers they are
2241 given (and so aren't required to cast them away any more).
2244 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2245 (speed) prefers to use its own implementation. The two implementations
2246 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2247 its object type properly exposed (MS_TM) instead of casting to/from "char
2248 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2249 aren't necessarily the greatest nomenclatures - but this is what was used
2250 internally to the implementation so I've used that for now.
2253 *) Ensure that deprecated functions do not get compiled when
2254 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2255 the self-tests were still using deprecated key-generation functions so
2256 these have been updated also.
2259 *) Reorganise PKCS#7 code to separate the digest location functionality
2260 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2261 New function PKCS7_set_digest() to set the digest type for PKCS#7
2262 digestedData type. Add additional code to correctly generate the
2263 digestedData type and add support for this type in PKCS7 initialization
2267 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2268 structure of type "other".
2271 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2272 sure the loop does correctly stop and breaking ("division by zero")
2273 modulus operations are not performed. The (pre-generated) prime
2274 table crypto/bn/bn_prime.h was already correct, but it could not be
2275 re-generated on some platforms because of the "division by zero"
2276 situation in the script.
2277 [Ralf S. Engelschall]
2279 *) Update support for ECC-based TLS ciphersuites according to
2280 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2281 SHA-1 now is only used for "small" curves (where the
2282 representation of a field element takes up to 24 bytes); for
2283 larger curves, the field element resulting from ECDH is directly
2284 used as premaster secret.
2285 [Douglas Stebila (Sun Microsystems Laboratories)]
2287 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2288 curve secp160r1 to the tests.
2289 [Douglas Stebila (Sun Microsystems Laboratories)]
2291 *) Add the possibility to load symbols globally with DSO.
2292 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2294 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2295 control of the error stack.
2298 *) Add support for STORE in ENGINE.
2301 *) Add the STORE type. The intention is to provide a common interface
2302 to certificate and key stores, be they simple file-based stores, or
2303 HSM-type store, or LDAP stores, or...
2304 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2307 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2308 pass a list of arguments to any function as well as provide a way
2309 for a function to pass data back to the caller.
2312 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2313 works like BUF_strdup() but can be used to duplicate a portion of
2314 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2318 *) Add the function sk_find_ex() which works like sk_find(), but will
2319 return an index to an element even if an exact match couldn't be
2320 found. The index is guaranteed to point at the element where the
2321 searched-for key would be inserted to preserve sorting order.
2324 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2325 takes an extra flags argument for optional functionality. Currently,
2326 the following flags are defined:
2328 OBJ_BSEARCH_VALUE_ON_NOMATCH
2329 This one gets OBJ_bsearch_ex() to return a pointer to the first
2330 element where the comparing function returns a negative or zero
2333 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2334 This one gets OBJ_bsearch_ex() to return a pointer to the first
2335 element where the comparing function returns zero. This is useful
2336 if there are more than one element where the comparing function
2340 *) Make it possible to create self-signed certificates with 'openssl ca'
2341 in such a way that the self-signed certificate becomes part of the
2342 CA database and uses the same mechanisms for serial number generation
2343 as all other certificate signing. The new flag '-selfsign' enables
2344 this functionality. Adapt CA.sh and CA.pl.in.
2347 *) Add functionality to check the public key of a certificate request
2348 against a given private. This is useful to check that a certificate
2349 request can be signed by that key (self-signing).
2352 *) Make it possible to have multiple active certificates with the same
2353 subject in the CA index file. This is done only if the keyword
2354 'unique_subject' is set to 'no' in the main CA section (default
2355 if 'CA_default') of the configuration file. The value is saved
2356 with the database itself in a separate index attribute file,
2357 named like the index file with '.attr' appended to the name.
2360 *) Generate muti valued AVAs using '+' notation in config files for
2364 *) Support for nameConstraints certificate extension.
2367 *) Support for policyConstraints certificate extension.
2370 *) Support for policyMappings certificate extension.
2373 *) Make sure the default DSA_METHOD implementation only uses its
2374 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2375 and change its own handlers to be NULL so as to remove unnecessary
2376 indirection. This lets alternative implementations fallback to the
2377 default implementation more easily.
2380 *) Support for directoryName in GeneralName related extensions
2384 *) Make it possible to link applications using Makefile.shared.
2385 Make that possible even when linking against static libraries!
2388 *) Support for single pass processing for S/MIME signing. This now
2389 means that S/MIME signing can be done from a pipe, in addition
2390 cleartext signing (multipart/signed type) is effectively streaming
2391 and the signed data does not need to be all held in memory.
2393 This is done with a new flag PKCS7_STREAM. When this flag is set
2394 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2395 is done after the data is output (and digests calculated) in
2396 SMIME_write_PKCS7().
2399 *) Add full support for -rpath/-R, both in shared libraries and
2400 applications, at least on the platforms where it's known how
2404 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2405 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2406 will now compute a table of multiples of the generator that
2407 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2408 faster (notably in the case of a single point multiplication,
2409 scalar * generator).
2410 [Nils Larsch, Bodo Moeller]
2412 *) IPv6 support for certificate extensions. The various extensions
2413 which use the IP:a.b.c.d can now take IPv6 addresses using the
2414 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2418 *) Added an ENGINE that implements RSA by performing private key
2419 exponentiations with the GMP library. The conversions to and from
2420 GMP's mpz_t format aren't optimised nor are any montgomery forms
2421 cached, and on x86 it appears OpenSSL's own performance has caught up.
2422 However there are likely to be other architectures where GMP could
2423 provide a boost. This ENGINE is not built in by default, but it can be
2424 specified at Configure time and should be accompanied by the necessary
2425 linker additions, eg;
2426 ./config -DOPENSSL_USE_GMP -lgmp
2429 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2430 testing availability of engines with "-t" - the old behaviour is
2431 produced by increasing the feature's verbosity with "-tt".
2434 *) ECDSA routines: under certain error conditions uninitialized BN objects
2435 could be freed. Solution: make sure initialization is performed early
2436 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2440 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2441 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2442 software implementations. For DSA and DH, parameter generation can
2443 also be overriden by providing the appropriate method callbacks.
2446 *) Change the "progress" mechanism used in key-generation and
2447 primality testing to functions that take a new BN_GENCB pointer in
2448 place of callback/argument pairs. The new API functions have "_ex"
2449 postfixes and the older functions are reimplemented as wrappers for
2450 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2451 declarations of the old functions to help (graceful) attempts to
2452 migrate to the new functions. Also, the new key-generation API
2453 functions operate on a caller-supplied key-structure and return
2454 success/failure rather than returning a key or NULL - this is to
2455 help make "keygen" another member function of RSA_METHOD etc.
2457 Example for using the new callback interface:
2459 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2463 BN_GENCB_set(&my_cb, my_callback, my_arg);
2465 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2466 /* For the meaning of a, b in calls to my_callback(), see the
2467 * documentation of the function that calls the callback.
2468 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2469 * my_callback should return 1 if it wants BN_is_prime_ex()
2470 * to continue, or 0 to stop.
2475 *) Change the ZLIB compression method to be stateful, and make it
2476 available to TLS with the number defined in
2477 draft-ietf-tls-compression-04.txt.
2480 *) Add the ASN.1 structures and functions for CertificatePair, which
2481 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2483 CertificatePair ::= SEQUENCE {
2484 forward [0] Certificate OPTIONAL,
2485 reverse [1] Certificate OPTIONAL,
2486 -- at least one of the pair shall be present -- }
2488 Also implement the PEM functions to read and write certificate
2489 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2491 This needed to be defined, mostly for the sake of the LDAP
2492 attribute crossCertificatePair, but may prove useful elsewhere as
2496 *) Make it possible to inhibit symlinking of shared libraries in
2497 Makefile.shared, for Cygwin's sake.
2500 *) Extend the BIGNUM API by creating a function
2501 void BN_set_negative(BIGNUM *a, int neg);
2502 and a macro that behave like
2503 int BN_is_negative(const BIGNUM *a);
2505 to avoid the need to access 'a->neg' directly in applications.
2508 *) Implement fast modular reduction for pseudo-Mersenne primes
2509 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2510 EC_GROUP_new_curve_GFp() will now automatically use this
2512 [Nils Larsch <nla@trustcenter.de>]
2514 *) Add new lock type (CRYPTO_LOCK_BN).
2517 *) Change the ENGINE framework to automatically load engines
2518 dynamically from specific directories unless they could be
2519 found to already be built in or loaded. Move all the
2520 current engines except for the cryptodev one to a new
2522 The engines in engines/ are built as shared libraries if
2523 the "shared" options was given to ./Configure or ./config.
2524 Otherwise, they are inserted in libcrypto.a.
2525 /usr/local/ssl/engines is the default directory for dynamic
2526 engines, but that can be overriden at configure time through
2527 the usual use of --prefix and/or --openssldir, and at run
2528 time with the environment variable OPENSSL_ENGINES.
2529 [Geoff Thorpe and Richard Levitte]
2531 *) Add Makefile.shared, a helper makefile to build shared
2532 libraries. Addapt Makefile.org.
2535 *) Add version info to Win32 DLLs.
2536 [Peter 'Luna' Runestig" <peter@runestig.com>]
2538 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2539 can be added using this API to created arbitrary PKCS#12
2540 files while avoiding the low level API.
2542 New options to PKCS12_create(), key or cert can be NULL and
2543 will then be omitted from the output file. The encryption
2544 algorithm NIDs can be set to -1 for no encryption, the mac
2545 iteration count can be set to 0 to omit the mac.
2547 Enhance pkcs12 utility by making the -nokeys and -nocerts
2548 options work when creating a PKCS#12 file. New option -nomac
2549 to omit the mac, NONE can be set for an encryption algorithm.
2550 New code is modified to use the enhanced PKCS12_create()
2551 instead of the low level API.
2554 *) Extend ASN1 encoder to support indefinite length constructed
2555 encoding. This can output sequences tags and octet strings in
2556 this form. Modify pk7_asn1.c to support indefinite length
2557 encoding. This is experimental and needs additional code to
2558 be useful, such as an ASN1 bio and some enhanced streaming
2561 Extend template encode functionality so that tagging is passed
2562 down to the template encoder.
2565 *) Let 'openssl req' fail if an argument to '-newkey' is not
2566 recognized instead of using RSA as a default.
2569 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2570 As these are not official, they are not included in "ALL";
2571 the "ECCdraft" ciphersuite group alias can be used to select them.
2572 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2574 *) Add ECDH engine support.
2575 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2577 *) Add ECDH in new directory crypto/ecdh/.
2578 [Douglas Stebila (Sun Microsystems Laboratories)]
2580 *) Let BN_rand_range() abort with an error after 100 iterations
2581 without success (which indicates a broken PRNG).
2584 *) Change BN_mod_sqrt() so that it verifies that the input value
2585 is really the square of the return value. (Previously,
2586 BN_mod_sqrt would show GIGO behaviour.)
2589 *) Add named elliptic curves over binary fields from X9.62, SECG,
2590 and WAP/WTLS; add OIDs that were still missing.
2592 [Sheueling Chang Shantz and Douglas Stebila
2593 (Sun Microsystems Laboratories)]
2595 *) Extend the EC library for elliptic curves over binary fields
2596 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2599 EC_GF2m_simple_method
2603 EC_GROUP_new_curve_GF2m
2604 EC_GROUP_set_curve_GF2m
2605 EC_GROUP_get_curve_GF2m
2606 EC_POINT_set_affine_coordinates_GF2m
2607 EC_POINT_get_affine_coordinates_GF2m
2608 EC_POINT_set_compressed_coordinates_GF2m
2610 Point compression for binary fields is disabled by default for
2611 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2614 As binary polynomials are represented as BIGNUMs, various members
2615 of the EC_GROUP and EC_POINT data structures can be shared
2616 between the implementations for prime fields and binary fields;
2617 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2618 are essentially identical to their ..._GFp counterparts.
2619 (For simplicity, the '..._GFp' prefix has been dropped from
2620 various internal method names.)
2622 An internal 'field_div' method (similar to 'field_mul' and
2623 'field_sqr') has been added; this is used only for binary fields.
2625 [Sheueling Chang Shantz and Douglas Stebila
2626 (Sun Microsystems Laboratories)]
2628 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2629 through methods ('mul', 'precompute_mult').
2631 The generic implementations (now internally called 'ec_wNAF_mul'
2632 and 'ec_wNAF_precomputed_mult') remain the default if these
2633 methods are undefined.
2635 [Sheueling Chang Shantz and Douglas Stebila
2636 (Sun Microsystems Laboratories)]
2638 *) New function EC_GROUP_get_degree, which is defined through
2639 EC_METHOD. For curves over prime fields, this returns the bit
2640 length of the modulus.
2642 [Sheueling Chang Shantz and Douglas Stebila
2643 (Sun Microsystems Laboratories)]
2645 *) New functions EC_GROUP_dup, EC_POINT_dup.
2646 (These simply call ..._new and ..._copy).
2648 [Sheueling Chang Shantz and Douglas Stebila
2649 (Sun Microsystems Laboratories)]
2651 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2652 Polynomials are represented as BIGNUMs (where the sign bit is not
2653 used) in the following functions [macros]:
2656 BN_GF2m_sub [= BN_GF2m_add]
2657 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2658 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2659 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2661 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2662 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2663 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2664 BN_GF2m_cmp [= BN_ucmp]
2666 (Note that only the 'mod' functions are actually for fields GF(2^m).
2667 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2669 For some functions, an the irreducible polynomial defining a
2670 field can be given as an 'unsigned int[]' with strictly
2671 decreasing elements giving the indices of those bits that are set;
2672 i.e., p[] represents the polynomial
2673 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2675 p[0] > p[1] > ... > p[k] = 0.
2676 This applies to the following functions:
2681 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2682 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2684 BN_GF2m_mod_sqrt_arr
2685 BN_GF2m_mod_solve_quad_arr
2689 Conversion can be performed by the following functions:
2694 bntest.c has additional tests for binary polynomial arithmetic.
2696 Two implementations for BN_GF2m_mod_div() are available.
2697 The default algorithm simply uses BN_GF2m_mod_inv() and
2698 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2699 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2700 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2702 [Sheueling Chang Shantz and Douglas Stebila
2703 (Sun Microsystems Laboratories)]
2705 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2706 functionality is disabled at compile-time.
2707 [Douglas Stebila <douglas.stebila@sun.com>]
2709 *) Change default behaviour of 'openssl asn1parse' so that more
2710 information is visible when viewing, e.g., a certificate:
2712 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2713 mode the content of non-printable OCTET STRINGs is output in a
2714 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2715 avoid the appearance of a printable string.
2716 [Nils Larsch <nla@trustcenter.de>]
2718 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2720 EC_GROUP_set_asn1_flag()
2721 EC_GROUP_get_asn1_flag()
2722 EC_GROUP_set_point_conversion_form()
2723 EC_GROUP_get_point_conversion_form()
2724 These control ASN1 encoding details:
2725 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2726 has been set to OPENSSL_EC_NAMED_CURVE.
2727 - Points are encoded in uncompressed form by default; options for
2728 asn1_for are as for point2oct, namely
2729 POINT_CONVERSION_COMPRESSED
2730 POINT_CONVERSION_UNCOMPRESSED
2731 POINT_CONVERSION_HYBRID
2733 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2736 EC_GROUP_get0_seed()
2737 EC_GROUP_get_seed_len()
2738 This is used only for ASN1 purposes (so far).
2739 [Nils Larsch <nla@trustcenter.de>]
2741 *) Add 'field_type' member to EC_METHOD, which holds the NID
2742 of the appropriate field type OID. The new function
2743 EC_METHOD_get_field_type() returns this value.
2744 [Nils Larsch <nla@trustcenter.de>]
2749 EC_POINT_point2hex()
2750 EC_POINT_hex2point()
2751 providing useful interfaces to EC_POINT_point2oct() and
2752 EC_POINT_oct2point().
2753 [Nils Larsch <nla@trustcenter.de>]
2755 *) Change internals of the EC library so that the functions
2756 EC_GROUP_set_generator()
2757 EC_GROUP_get_generator()
2758 EC_GROUP_get_order()
2759 EC_GROUP_get_cofactor()
2760 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2761 to methods, which would lead to unnecessary code duplication when
2762 adding different types of curves.
2763 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2765 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2766 arithmetic, and such that modified wNAFs are generated
2767 (which avoid length expansion in many cases).
2770 *) Add a function EC_GROUP_check_discriminant() (defined via
2771 EC_METHOD) that verifies that the curve discriminant is non-zero.
2773 Add a function EC_GROUP_check() that makes some sanity tests
2774 on a EC_GROUP, its generator and order. This includes
2775 EC_GROUP_check_discriminant().
2776 [Nils Larsch <nla@trustcenter.de>]
2778 *) Add ECDSA in new directory crypto/ecdsa/.
2780 Add applications 'openssl ecparam' and 'openssl ecdsa'
2781 (these are based on 'openssl dsaparam' and 'openssl dsa').
2783 ECDSA support is also included in various other files across the
2784 library. Most notably,
2785 - 'openssl req' now has a '-newkey ecdsa:file' option;
2786 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2787 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2788 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2789 them suitable for ECDSA where domain parameters must be
2790 extracted before the specific public key;
2791 - ECDSA engine support has been added.
2792 [Nils Larsch <nla@trustcenter.de>]
2794 *) Include some named elliptic curves, and add OIDs from X9.62,
2795 SECG, and WAP/WTLS. Each curve can be obtained from the new
2797 EC_GROUP_new_by_curve_name(),
2798 and the list of available named curves can be obtained with
2799 EC_get_builtin_curves().
2800 Also add a 'curve_name' member to EC_GROUP objects, which can be
2802 EC_GROUP_set_curve_name()
2803 EC_GROUP_get_curve_name()
2804 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2806 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2807 was actually never needed) and in BN_mul(). The removal in BN_mul()
2808 required a small change in bn_mul_part_recursive() and the addition
2809 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2810 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2811 bn_sub_words() and bn_add_words() except they take arrays with
2815 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2817 *) Cleanse PEM buffers before freeing them since they may contain
2819 [Benjamin Bennett <ben@psc.edu>]
2821 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2822 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2823 authentication-only ciphersuites.
2826 *) Since AES128 and AES256 share a single mask bit in the logic of
2827 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2828 kludge to work properly if AES128 is available and AES256 isn't.
2831 *) Expand security boundary to match 1.1.1 module.
2834 *) Remove redundant features: hash file source, editing of test vectors
2835 modify fipsld to use external fips_premain.c signature.
2838 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2839 run algorithm test programs.
2842 *) Make algorithm test programs more tolerant of whitespace.
2845 *) Have SSL/TLS server implementation tolerate "mismatched" record
2846 protocol version while receiving ClientHello even if the
2847 ClientHello is fragmented. (The server can't insist on the
2848 particular protocol version it has chosen before the ServerHello
2849 message has informed the client about his choice.)
2852 *) Load error codes if they are not already present instead of using a
2853 static variable. This allows them to be cleanly unloaded and reloaded.
2856 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2858 *) Introduce limits to prevent malicious keys being able to
2859 cause a denial of service. (CVE-2006-2940)
2860 [Steve Henson, Bodo Moeller]
2862 *) Fix ASN.1 parsing of certain invalid structures that can result
2863 in a denial of service. (CVE-2006-2937) [Steve Henson]
2865 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2866 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2868 *) Fix SSL client code which could crash if connecting to a
2869 malicious SSLv2 server. (CVE-2006-4343)
2870 [Tavis Ormandy and Will Drewry, Google Security Team]
2872 *) Change ciphersuite string processing so that an explicit
2873 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2874 will no longer include "AES128-SHA"), and any other similar
2875 ciphersuite (same bitmap) from *other* protocol versions (so that
2876 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2877 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2878 changes from 0.9.8b and 0.9.8d.
2881 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2883 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2884 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2886 *) Change the Unix randomness entropy gathering to use poll() when
2887 possible instead of select(), since the latter has some
2888 undesirable limitations.
2889 [Darryl Miles via Richard Levitte and Bodo Moeller]
2891 *) Disable rogue ciphersuites:
2893 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2894 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2895 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2897 The latter two were purportedly from
2898 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2901 Also deactive the remaining ciphersuites from
2902 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2903 unofficial, and the ID has long expired.
2906 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2907 dual-core machines) and other potential thread-safety issues.
2910 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2912 *) Adapt fipsld and the build system to link against the validated FIPS
2913 module in FIPS mode.
2916 *) Fixes for VC++ 2005 build under Windows.
2919 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2920 from a Windows bash shell such as MSYS. It is autodetected from the
2921 "config" script when run from a VC++ environment. Modify standard VC++
2922 build to use fipscanister.o from the GNU make build.
2925 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2927 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2928 The value now differs depending on if you build for FIPS or not.
2929 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2930 safely run with a non-FIPSed libcrypto, as it may crash because of
2931 the difference induced by this change.
2934 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2936 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2937 (part of SSL_OP_ALL). This option used to disable the
2938 countermeasure against man-in-the-middle protocol-version
2939 rollback in the SSL 2.0 server implementation, which is a bad
2940 idea. (CVE-2005-2969)
2942 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2943 for Information Security, National Institute of Advanced Industrial
2944 Science and Technology [AIST], Japan)]
2946 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2947 mainly for FIPS compliance and not fully integrated at this stage.
2950 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2951 the exponentiation using a fixed-length exponent. (Otherwise,
2952 the information leaked through timing could expose the secret key
2953 after many signatures; cf. Bleichenbacher's attack on DSA with
2957 *) Make a new fixed-window mod_exp implementation the default for
2958 RSA, DSA, and DH private-key operations so that the sequence of
2959 squares and multiplies and the memory access pattern are
2960 independent of the particular secret key. This will mitigate
2961 cache-timing and potential related attacks.
2963 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2964 and this is automatically used by BN_mod_exp_mont() if the new flag
2965 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2966 will use this BN flag for private exponents unless the flag
2967 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2968 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2970 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2972 *) Change the client implementation for SSLv23_method() and
2973 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2974 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2975 (Previously, the SSL 2.0 backwards compatible Client Hello
2976 message format would be used even with SSL_OP_NO_SSLv2.)
2979 *) Add support for smime-type MIME parameter in S/MIME messages which some
2983 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2984 a threadsafe manner. Modify rsa code to use new function and add calls
2985 to dsa and dh code (which had race conditions before).
2988 *) Include the fixed error library code in the C error file definitions
2989 instead of fixing them up at runtime. This keeps the error code
2990 structures constant.
2993 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2995 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2998 *) Fixes for newer kerberos headers. NB: the casts are needed because
2999 the 'length' field is signed on one version and unsigned on another
3000 with no (?) obvious way to tell the difference, without these VC++
3001 complains. Also the "definition" of FAR (blank) is no longer included
3002 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3003 some needed definitions.
3006 *) Undo Cygwin change.
3009 *) Added support for proxy certificates according to RFC 3820.
3010 Because they may be a security thread to unaware applications,
3011 they must be explicitely allowed in run-time. See
3012 docs/HOWTO/proxy_certificates.txt for further information.
3015 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3017 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3018 server and client random values. Previously
3019 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3020 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3022 This change has negligible security impact because:
3024 1. Server and client random values still have 24 bytes of pseudo random
3027 2. Server and client random values are sent in the clear in the initial
3030 3. The master secret is derived using the premaster secret (48 bytes in
3031 size for static RSA ciphersuites) as well as client server and random
3034 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3037 [Stephen Henson, reported by UK NISCC]
3039 *) Use Windows randomness collection on Cygwin.
3042 *) Fix hang in EGD/PRNGD query when communication socket is closed
3043 prematurely by EGD/PRNGD.
3044 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3046 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3049 *) Back-port of selected performance improvements from development
3050 branch, as well as improved support for PowerPC platforms.
3053 *) Add lots of checks for memory allocation failure, error codes to indicate
3054 failure and freeing up memory if a failure occurs.
3055 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3057 *) Add new -passin argument to dgst.
3060 *) Perform some character comparisons of different types in X509_NAME_cmp:
3061 this is needed for some certificates that reencode DNs into UTF8Strings
3062 (in violation of RFC3280) and can't or wont issue name rollover
3066 *) Make an explicit check during certificate validation to see that
3067 the CA setting in each certificate on the chain is correct. As a
3068 side effect always do the following basic checks on extensions,
3069 not just when there's an associated purpose to the check:
3071 - if there is an unhandled critical extension (unless the user
3072 has chosen to ignore this fault)
3073 - if the path length has been exceeded (if one is set at all)
3074 - that certain extensions fit the associated purpose (if one has
3078 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3080 *) Avoid a race condition when CRLs are checked in a multi threaded
3081 environment. This would happen due to the reordering of the revoked
3082 entries during signature checking and serial number lookup. Now the
3083 encoding is cached and the serial number sort performed under a lock.
3084 Add new STACK function sk_is_sorted().
3087 *) Add Delta CRL to the extension code.
3090 *) Various fixes to s3_pkt.c so alerts are sent properly.
3091 [David Holmes <d.holmes@f5.com>]
3093 *) Reduce the chances of duplicate issuer name and serial numbers (in
3094 violation of RFC3280) using the OpenSSL certificate creation utilities.
3095 This is done by creating a random 64 bit value for the initial serial
3096 number when a serial number file is created or when a self signed
3097 certificate is created using 'openssl req -x509'. The initial serial
3098 number file is created using 'openssl x509 -next_serial' in CA.pl
3099 rather than being initialized to 1.
3102 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3104 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3105 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3106 [Joe Orton, Steve Henson]
3108 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3110 [Joe Orton, Steve Henson]
3112 *) Make it possible to have multiple active certificates with the same
3113 subject in the CA index file. This is done only if the keyword
3114 'unique_subject' is set to 'no' in the main CA section (default
3115 if 'CA_default') of the configuration file. The value is saved
3116 with the database itself in a separate index attribute file,
3117 named like the index file with '.attr' appended to the name.
3120 *) X509 verify fixes. Disable broken certificate workarounds when
3121 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3122 keyUsage extension present. Don't accept CRLs with unhandled critical
3123 extensions: since verify currently doesn't process CRL extensions this
3124 rejects a CRL with *any* critical extensions. Add new verify error codes
3128 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3129 A clarification of RFC2560 will require the use of OCTET STRINGs and
3130 some implementations cannot handle the current raw format. Since OpenSSL
3131 copies and compares OCSP nonces as opaque blobs without any attempt at
3132 parsing them this should not create any compatibility issues.
3135 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3136 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3137 this HMAC (and other) operations are several times slower than OpenSSL
3141 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3142 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3144 *) Use the correct content when signing type "other".
3147 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3149 *) Fix various bugs revealed by running the NISCC test suite:
3151 Stop out of bounds reads in the ASN1 code when presented with
3152 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3154 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3156 If verify callback ignores invalid public key errors don't try to check
3157 certificate signature with the NULL public key.
3161 *) New -ignore_err option in ocsp application to stop the server
3162 exiting on the first error in a request.
3165 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3166 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3170 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3171 extra data after the compression methods not only for TLS 1.0
3172 but also for SSL 3.0 (as required by the specification).
3173 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3175 *) Change X509_certificate_type() to mark the key as exported/exportable
3176 when it's 512 *bits* long, not 512 bytes.
3179 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3180 blocks during encryption.
3183 *) Various fixes to base64 BIO and non blocking I/O. On write
3184 flushes were not handled properly if the BIO retried. On read
3185 data was not being buffered properly and had various logic bugs.
3186 This also affects blocking I/O when the data being decoded is a
3190 *) Various S/MIME bugfixes and compatibility changes:
3191 output correct application/pkcs7 MIME type if
3192 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3193 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3194 of files as .eml work). Correctly handle very long lines in MIME
3198 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3200 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3201 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3202 a protocol version number mismatch like a decryption error
3203 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3206 *) Turn on RSA blinding by default in the default implementation
3207 to avoid a timing attack. Applications that don't want it can call
3208 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3209 They would be ill-advised to do so in most cases.
3210 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3212 *) Change RSA blinding code so that it works when the PRNG is not
3213 seeded (in this case, the secret RSA exponent is abused as
3214 an unpredictable seed -- if it is not unpredictable, there
3215 is no point in blinding anyway). Make RSA blinding thread-safe
3216 by remembering the creator's thread ID in rsa->blinding and
3217 having all other threads use local one-time blinding factors
3218 (this requires more computation than sharing rsa->blinding, but
3219 avoids excessive locking; and if an RSA object is not shared
3220 between threads, blinding will still be very fast).
3223 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3224 ENGINE as defaults for all supported algorithms irrespective of
3225 the 'flags' parameter. 'flags' is now honoured, so applications
3226 should make sure they are passing it correctly.
3229 *) Target "mingw" now allows native Windows code to be generated in
3230 the Cygwin environment as well as with the MinGW compiler.
3233 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3235 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3236 via timing by performing a MAC computation even if incorrrect
3237 block cipher padding has been found. This is a countermeasure
3238 against active attacks where the attacker has to distinguish
3239 between bad padding and a MAC verification error. (CVE-2003-0078)
3241 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3242 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3243 Martin Vuagnoux (EPFL, Ilion)]
3245 *) Make the no-err option work as intended. The intention with no-err
3246 is not to have the whole error stack handling routines removed from
3247 libcrypto, it's only intended to remove all the function name and
3248 reason texts, thereby removing some of the footprint that may not
3249 be interesting if those errors aren't displayed anyway.
3251 NOTE: it's still possible for any application or module to have it's
3252 own set of error texts inserted. The routines are there, just not
3253 used by default when no-err is given.
3256 *) Add support for FreeBSD on IA64.
3257 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3259 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3260 Kerberos function mit_des_cbc_cksum(). Before this change,
3261 the value returned by DES_cbc_cksum() was like the one from
3262 mit_des_cbc_cksum(), except the bytes were swapped.
3263 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3265 *) Allow an application to disable the automatic SSL chain building.
3266 Before this a rather primitive chain build was always performed in
3267 ssl3_output_cert_chain(): an application had no way to send the
3268 correct chain if the automatic operation produced an incorrect result.
3270 Now the chain builder is disabled if either:
3272 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3274 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3276 The reasoning behind this is that an application would not want the
3277 auto chain building to take place if extra chain certificates are
3278 present and it might also want a means of sending no additional
3279 certificates (for example the chain has two certificates and the
3283 *) Add the possibility to build without the ENGINE framework.
3284 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3286 *) Under Win32 gmtime() can return NULL: check return value in
3287 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3290 *) DSA routines: under certain error conditions uninitialized BN objects
3291 could be freed. Solution: make sure initialization is performed early
3292 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3293 Nils Larsch <nla@trustcenter.de> via PR#459)
3296 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3297 checked on reconnect on the client side, therefore session resumption
3298 could still fail with a "ssl session id is different" error. This
3299 behaviour is masked when SSL_OP_ALL is used due to
3300 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3301 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3302 followup to PR #377.
3305 *) IA-32 assembler support enhancements: unified ELF targets, support
3306 for SCO/Caldera platforms, fix for Cygwin shared build.
3309 *) Add support for FreeBSD on sparc64. As a consequence, support for
3310 FreeBSD on non-x86 processors is separate from x86 processors on
3311 the config script, much like the NetBSD support.
3312 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3314 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3316 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3319 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3320 code (06) was taken as the first octet of the session ID and the last
3321 octet was ignored consequently. As a result SSLv2 client side session
3322 caching could not have worked due to the session ID mismatch between
3324 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3328 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3329 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3333 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3334 seems that in spite of existing for more than a year, many application
3335 author have done nothing to provide the necessary callbacks, which
3336 means that this particular engine will not work properly anywhere.
3337 This is a very unfortunate situation which forces us, in the name
3338 of usability, to give the hw_ncipher.c a static lock, which is part
3340 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3341 appear in 0.9.8 or later. We EXPECT application authors to have
3342 dealt properly with this when 0.9.8 is released (unless we actually
3343 make such changes in the libcrypto locking code that changes will
3344 have to be made anyway).
3347 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3348 octets have been read, EOF or an error occurs. Without this change
3349 some truncated ASN1 structures will not produce an error.
3352 *) Disable Heimdal support, since it hasn't been fully implemented.
3353 Still give the possibility to force the use of Heimdal, but with
3354 warnings and a request that patches get sent to openssl-dev.
3357 *) Add the VC-CE target, introduce the WINCE sysname, and add
3358 INSTALL.WCE and appropriate conditionals to make it build.
3359 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3361 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3362 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3363 edit numbers of the version.
3364 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3366 *) Introduce safe string copy and catenation functions
3367 (BUF_strlcpy() and BUF_strlcat()).
3368 [Ben Laurie (CHATS) and Richard Levitte]
3370 *) Avoid using fixed-size buffers for one-line DNs.
3371 [Ben Laurie (CHATS)]
3373 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3374 resizing buffers containing secrets, and use where appropriate.
3375 [Ben Laurie (CHATS)]
3377 *) Avoid using fixed size buffers for configuration file location.
3378 [Ben Laurie (CHATS)]
3380 *) Avoid filename truncation for various CA files.
3381 [Ben Laurie (CHATS)]
3383 *) Use sizeof in preference to magic numbers.
3384 [Ben Laurie (CHATS)]
3386 *) Avoid filename truncation in cert requests.
3387 [Ben Laurie (CHATS)]
3389 *) Add assertions to check for (supposedly impossible) buffer
3391 [Ben Laurie (CHATS)]
3393 *) Don't cache truncated DNS entries in the local cache (this could
3394 potentially lead to a spoofing attack).
3395 [Ben Laurie (CHATS)]
3397 *) Fix various buffers to be large enough for hex/decimal
3398 representations in a platform independent manner.
3399 [Ben Laurie (CHATS)]
3401 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3402 resizing buffers containing secrets, and use where appropriate.
3403 [Ben Laurie (CHATS)]
3405 *) Add BIO_indent() to avoid much slightly worrying code to do
3407 [Ben Laurie (CHATS)]
3409 *) Convert sprintf()/BIO_puts() to BIO_printf().
3410 [Ben Laurie (CHATS)]
3412 *) buffer_gets() could terminate with the buffer only half
3414 [Ben Laurie (CHATS)]
3416 *) Add assertions to prevent user-supplied crypto functions from
3417 overflowing internal buffers by having large block sizes, etc.
3418 [Ben Laurie (CHATS)]
3420 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3422 [Ben Laurie (CHATS)]
3424 *) Eliminate unused copy of key in RC4.
3425 [Ben Laurie (CHATS)]
3427 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3428 [Ben Laurie (CHATS)]
3430 *) Fix off-by-one error in EGD path.
3431 [Ben Laurie (CHATS)]
3433 *) If RANDFILE path is too long, ignore instead of truncating.
3434 [Ben Laurie (CHATS)]
3436 *) Eliminate unused and incorrectly sized X.509 structure
3438 [Ben Laurie (CHATS)]
3440 *) Eliminate unused and dangerous function knumber().
3441 [Ben Laurie (CHATS)]
3443 *) Eliminate unused and dangerous structure, KSSL_ERR.
3444 [Ben Laurie (CHATS)]
3446 *) Protect against overlong session ID context length in an encoded
3447 session object. Since these are local, this does not appear to be
3449 [Ben Laurie (CHATS)]
3451 *) Change from security patch (see 0.9.6e below) that did not affect
3452 the 0.9.6 release series:
3454 Remote buffer overflow in SSL3 protocol - an attacker could
3455 supply an oversized master key in Kerberos-enabled versions.
3457 [Ben Laurie (CHATS)]
3459 *) Change the SSL kerb5 codes to match RFC 2712.
3462 *) Make -nameopt work fully for req and add -reqopt switch.
3463 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3465 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3466 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3468 *) Make sure tests can be performed even if the corresponding algorithms
3469 have been removed entirely. This was also the last step to make
3470 OpenSSL compilable with DJGPP under all reasonable conditions.
3471 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3473 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3474 to allow version independent disabling of normally unselected ciphers,
3475 which may be activated as a side-effect of selecting a single cipher.
3477 (E.g., cipher list string "RSA" enables ciphersuites that are left
3478 out of "ALL" because they do not provide symmetric encryption.
3479 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3480 [Lutz Jaenicke, Bodo Moeller]
3482 *) Add appropriate support for separate platform-dependent build
3483 directories. The recommended way to make a platform-dependent
3484 build directory is the following (tested on Linux), maybe with
3487 # Place yourself outside of the OpenSSL source tree. In
3488 # this example, the environment variable OPENSSL_SOURCE
3489 # is assumed to contain the absolute OpenSSL source directory.
3490 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3491 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3492 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3493 mkdir -p `dirname $F`
3494 ln -s $OPENSSL_SOURCE/$F $F
3497 To be absolutely sure not to disturb the source tree, a "make clean"
3498 is a good thing. If it isn't successfull, don't worry about it,
3499 it probably means the source directory is very clean.
3502 *) Make sure any ENGINE control commands make local copies of string
3503 pointers passed to them whenever necessary. Otherwise it is possible
3504 the caller may have overwritten (or deallocated) the original string
3505 data when a later ENGINE operation tries to use the stored values.
3506 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3508 *) Improve diagnostics in file reading and command-line digests.
3509 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3511 *) Add AES modes CFB and OFB to the object database. Correct an
3512 error in AES-CFB decryption.
3515 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3516 allows existing EVP_CIPHER_CTX structures to be reused after
3517 calling EVP_*Final(). This behaviour is used by encryption
3518 BIOs and some applications. This has the side effect that
3519 applications must explicitly clean up cipher contexts with
3520 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3523 *) Check the values of dna and dnb in bn_mul_recursive before calling
3524 bn_mul_comba (a non zero value means the a or b arrays do not contain
3525 n2 elements) and fallback to bn_mul_normal if either is not zero.
3528 *) Fix escaping of non-ASCII characters when using the -subj option
3529 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3532 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3533 form for "surname", serialNumber has no short form.
3534 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3535 therefore remove "mail" short name for "internet 7".
3536 The OID for unique identifiers in X509 certificates is
3537 x500UniqueIdentifier, not uniqueIdentifier.
3538 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3541 *) Add an "init" command to the ENGINE config module and auto initialize
3542 ENGINEs. Without any "init" command the ENGINE will be initialized
3543 after all ctrl commands have been executed on it. If init=1 the
3544 ENGINE is initailized at that point (ctrls before that point are run
3545 on the uninitialized ENGINE and after on the initialized one). If
3546 init=0 then the ENGINE will not be iniatialized at all.
3549 *) Fix the 'app_verify_callback' interface so that the user-defined
3550 argument is actually passed to the callback: In the
3551 SSL_CTX_set_cert_verify_callback() prototype, the callback
3552 declaration has been changed from
3555 int (*cb)(X509_STORE_CTX *,void *);
3556 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3557 i=s->ctx->app_verify_callback(&ctx)
3558 has been changed into
3559 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3561 To update applications using SSL_CTX_set_cert_verify_callback(),
3562 a dummy argument can be added to their callback functions.
3563 [D. K. Smetters <smetters@parc.xerox.com>]
3565 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3566 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3568 *) Add and OPENSSL_LOAD_CONF define which will cause
3569 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3570 This allows older applications to transparently support certain
3571 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3572 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3573 load the config file and OPENSSL_add_all_algorithms_conf() which will
3574 always load it have also been added.
3577 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3578 Adjust NIDs and EVP layer.
3579 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3581 *) Config modules support in openssl utility.
3583 Most commands now load modules from the config file,
3584 though in a few (such as version) this isn't done
3585 because it couldn't be used for anything.
3587 In the case of ca and req the config file used is
3588 the same as the utility itself: that is the -config
3589 command line option can be used to specify an
3593 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3594 use "openssl_conf" if filename is NULL use default openssl config file.
3597 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3598 config section name. Add a new flag to tolerate a missing config file
3599 and move code to CONF_modules_load_file().
3602 *) Support for crypto accelerator cards from Accelerated Encryption
3603 Processing, www.aep.ie. (Use engine 'aep')
3604 The support was copied from 0.9.6c [engine] and adapted/corrected
3605 to work with the new engine framework.
3606 [AEP Inc. and Richard Levitte]
3608 *) Support for SureWare crypto accelerator cards from Baltimore
3609 Technologies. (Use engine 'sureware')
3610 The support was copied from 0.9.6c [engine] and adapted
3611 to work with the new engine framework.
3614 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3615 make the newer ENGINE framework commands for the CHIL engine work.
3616 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3618 *) Make it possible to produce shared libraries on ReliantUNIX.
3619 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3621 *) Add the configuration target debug-linux-ppro.
3622 Make 'openssl rsa' use the general key loading routines
3623 implemented in apps.c, and make those routines able to
3624 handle the key format FORMAT_NETSCAPE and the variant
3626 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3628 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3629 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3631 *) Add -keyform to rsautl, and document -engine.
3632 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3634 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3635 BIO_R_NO_SUCH_FILE error code rather than the generic
3636 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3639 *) Add new functions
3641 ERR_peek_last_error_line
3642 ERR_peek_last_error_line_data.
3643 These are similar to
3646 ERR_peek_error_line_data,
3647 but report on the latest error recorded rather than the first one
3648 still in the error queue.
3649 [Ben Laurie, Bodo Moeller]
3651 *) default_algorithms option in ENGINE config module. This allows things
3653 default_algorithms = ALL
3654 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3657 *) Prelminary ENGINE config module.
3660 *) New experimental application configuration code.
3663 *) Change the AES code to follow the same name structure as all other
3664 symmetric ciphers, and behave the same way. Move everything to
3665 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3666 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3668 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3669 [Ben Laurie and Theo de Raadt]
3671 *) Add option to output public keys in req command.
3672 [Massimiliano Pala madwolf@openca.org]
3674 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3675 (up to about 10% better than before for P-192 and P-224).
3678 *) New functions/macros
3680 SSL_CTX_set_msg_callback(ctx, cb)
3681 SSL_CTX_set_msg_callback_arg(ctx, arg)
3682 SSL_set_msg_callback(ssl, cb)
3683 SSL_set_msg_callback_arg(ssl, arg)
3685 to request calling a callback function
3687 void cb(int write_p, int version, int content_type,
3688 const void *buf, size_t len, SSL *ssl, void *arg)
3690 whenever a protocol message has been completely received
3691 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3692 protocol version according to which the SSL library interprets
3693 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3694 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3695 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3696 specification (change_cipher_spec(20), alert(21), handshake(22)).
3697 'buf' and 'len' point to the actual message, 'ssl' to the
3698 SSL object, and 'arg' is the application-defined value set by
3699 SSL[_CTX]_set_msg_callback_arg().
3701 'openssl s_client' and 'openssl s_server' have new '-msg' options
3702 to enable a callback that displays all protocol messages.
3705 *) Change the shared library support so shared libraries are built as
3706 soon as the corresponding static library is finished, and thereby get
3707 openssl and the test programs linked against the shared library.
3708 This still only happens when the keyword "shard" has been given to
3709 the configuration scripts.
3711 NOTE: shared library support is still an experimental thing, and
3712 backward binary compatibility is still not guaranteed.
3713 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3715 *) Add support for Subject Information Access extension.
3716 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
projects / openssl.git / blob