5 Changes between 1.0.0 and 1.1.0 [xx XXX xxxx]
7 *) New function OPENSSL_gmtime_diff to find the difference in days
8 and seconds between two tm structures. This will be used to provide
9 additional functionality for ASN1_TIME.
12 *) New -sigopt option to the ca, req and x509 utilities. Additional
13 signature parameters can be passed using this option and in
17 *) Add RSA PSS signing function. This will generate and set the
18 appropriate AlgorithmIdentifiers for PSS based on those in the
19 corresponding EVP_MD_CTX structure. No application support yet.
22 *) Support for companion algorithm specific ASN1 signing routines.
23 New function ASN1_item_sign_ctx() signs a pre-initialised
24 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
25 the appropriate parameters.
28 *) Add new algorithm specific ASN1 verification initialisation function
29 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
30 handling will be the same no matter what EVP_PKEY_METHOD is used.
31 Add a PSS handler to support verification of PSS signatures: checked
32 against a number of sample certificates.
35 *) Add signature printing for PSS. Add PSS OIDs.
36 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
38 *) Add algorithm specific signature printing. An individual ASN1 method
39 can now print out signatures instead of the standard hex dump.
41 More complex signatures (e.g. PSS) can print out more meaningful
42 information. Include DSA version that prints out the signature
46 *) Add -trusted_first option which attempts to find certificates in the
47 trusted store even if an untrusted chain is also supplied.
50 *) Initial experimental support for explicitly trusted non-root CAs.
51 OpenSSL still tries to build a complete chain to a root but if an
52 intermediate CA has a trust setting included that is used. The first
53 setting is used: whether to trust or reject.
56 *) New -verify_name option in command line utilities to set verification
60 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
61 Add CMAC pkey methods.
64 *) Experiemental regnegotiation in s_server -www mode. If the client
65 browses /reneg connection is renegotiated. If /renegcert it is
66 renegotiated requesting a certificate.
69 *) Add an "external" session cache for debugging purposes to s_server. This
70 should help trace issues which normally are only apparent in deployed
71 multi-process servers.
74 *) Experiemental password based recipient info support for CMS library:
78 *) Split password based encryption into PBES2 and PBKDF2 functions. This
79 neatly separates the code into cipher and PBE sections and is required
80 for some algorithms that split PBES2 into separate pieces (such as
84 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
85 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
86 BIO_set_cipher() and some obscure PEM functions were changed so they
87 can now return an error. The RAND changes required a change to the
88 RAND_METHOD structure.
91 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
92 a gcc attribute to warn if the result of a function is ignored. This
93 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
94 whose return value is often ignored.
97 Changes between 1.0.0 and 1.0.1 [xx XXX xxxx]
99 *) Add call to ENGINE_register_all_complete() to
100 ENGINE_load_builtin_engines(), so some implementations get used
101 automatically instead of needing explicit application support.
104 *) Add support for TLS key exporter as described in RFC5705.
105 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
107 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
108 a few changes are required:
110 Add SSL_OP_NO_TLSv1_1 flag.
112 Update version checking logic to handle version 1.1.
113 Add explicit IV handling (ported from DTLS code).
114 Add command line options to s_client/s_server.
117 Changes between 1.0.0 and 1.0.0a [xx XXX xxxx]
119 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
121 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
123 Changes between 0.9.8n and 1.0.0 [xx XXX xxxx]
125 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
126 context. The operation can be customised via the ctrl mechanism in
127 case ENGINEs want to include additional functionality.
130 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
133 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
134 output hashes compatible with older versions of OpenSSL.
135 [Willy Weisz <weisz@vcpc.univie.ac.at>]
137 *) Fix compression algorithm handling: if resuming a session use the
138 compression algorithm of the resumed session instead of determining
139 it from client hello again. Don't allow server to change algorithm.
142 *) Add load_crls() function to apps tidying load_certs() too. Add option
143 to verify utility to allow additional CRLs to be included.
146 *) Update OCSP request code to permit adding custom headers to the request:
147 some responders need this.
150 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
152 [Julia Lawall <julia@diku.dk>]
154 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
155 needlessly dereferenced structures, used obsolete functions and
156 didn't handle all updated verify codes correctly.
159 *) Disable MD2 in the default configuration.
162 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
163 indicate the initial BIO being pushed or popped. This makes it possible
164 to determine whether the BIO is the one explicitly called or as a result
165 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
166 it handles reference counts correctly and doesn't zero out the I/O bio
167 when it is not being explicitly popped. WARNING: applications which
168 included workarounds for the old buggy behaviour will need to be modified
169 or they could free up already freed BIOs.
172 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
173 renaming to all platforms (within the 0.9.8 branch, this was
174 done conditionally on Netware platforms to avoid a name clash).
175 [Guenter <lists@gknw.net>]
177 *) Add ECDHE and PSK support to DTLS.
178 [Michael Tuexen <tuexen@fh-muenster.de>]
180 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
184 *) Add "missing" function EVP_MD_flags() (without this the only way to
185 retrieve a digest flags is by accessing the structure directly. Update
186 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
187 or cipher is registered as in the "from" argument. Print out all
188 registered digests in the dgst usage message instead of manually
189 attempting to work them out.
192 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
193 this allows the use of compression and extensions. Change default cipher
194 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
195 by default unless an application cipher string requests it.
198 *) Alter match criteria in PKCS12_parse(). It used to try to use local
199 key ids to find matching certificates and keys but some PKCS#12 files
200 don't follow the (somewhat unwritten) rules and this strategy fails.
201 Now just gather all certificates together and the first private key
202 then look for the first certificate that matches the key.
205 *) Support use of registered digest and cipher names for dgst and cipher
206 commands instead of having to add each one as a special case. So now
213 openssl dgst -sha256 foo
215 and this works for ENGINE based algorithms too.
219 *) Update Gost ENGINE to support parameter files.
220 [Victor B. Wagner <vitus@cryptocom.ru>]
222 *) Support GeneralizedTime in ca utility.
223 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
225 *) Enhance the hash format used for certificate directory links. The new
226 form uses the canonical encoding (meaning equivalent names will work
227 even if they aren't identical) and uses SHA1 instead of MD5. This form
228 is incompatible with the older format and as a result c_rehash should
229 be used to rebuild symbolic links.
232 *) Make PKCS#8 the default write format for private keys, replacing the
233 traditional format. This form is standardised, more secure and doesn't
234 include an implicit MD5 dependency.
237 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
238 committed to OpenSSL should pass this lot as a minimum.
241 *) Add session ticket override functionality for use by EAP-FAST.
242 [Jouni Malinen <j@w1.fi>]
244 *) Modify HMAC functions to return a value. Since these can be implemented
245 in an ENGINE errors can occur.
248 *) Type-checked OBJ_bsearch_ex.
251 *) Type-checked OBJ_bsearch. Also some constification necessitated
252 by type-checking. Still to come: TXT_DB, bsearch(?),
253 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
257 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
258 seconds to a tm structure directly, instead of going through OS
259 specific date routines. This avoids any issues with OS routines such
260 as the year 2038 bug. New *_adj() functions for ASN1 time structures
261 and X509_time_adj_ex() to cover the extended range. The existing
262 X509_time_adj() is still usable and will no longer have any date issues.
265 *) Delta CRL support. New use deltas option which will attempt to locate
266 and search any appropriate delta CRLs available.
268 This work was sponsored by Google.
271 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
272 code and add additional score elements. Validate alternate CRL paths
273 as part of the CRL checking and indicate a new error "CRL path validation
274 error" in this case. Applications wanting additional details can use
275 the verify callback and check the new "parent" field. If this is not
276 NULL CRL path validation is taking place. Existing applications wont
277 see this because it requires extended CRL support which is off by
280 This work was sponsored by Google.
283 *) Support for freshest CRL extension.
285 This work was sponsored by Google.
288 *) Initial indirect CRL support. Currently only supported in the CRLs
289 passed directly and not via lookup. Process certificate issuer
290 CRL entry extension and lookup CRL entries by bother issuer name
291 and serial number. Check and process CRL issuer entry in IDP extension.
293 This work was sponsored by Google.
296 *) Add support for distinct certificate and CRL paths. The CRL issuer
297 certificate is validated separately in this case. Only enabled if
298 an extended CRL support flag is set: this flag will enable additional
299 CRL functionality in future.
301 This work was sponsored by Google.
304 *) Add support for policy mappings extension.
306 This work was sponsored by Google.
309 *) Fixes to pathlength constraint, self issued certificate handling,
310 policy processing to align with RFC3280 and PKITS tests.
312 This work was sponsored by Google.
315 *) Support for name constraints certificate extension. DN, email, DNS
316 and URI types are currently supported.
318 This work was sponsored by Google.
321 *) To cater for systems that provide a pointer-based thread ID rather
322 than numeric, deprecate the current numeric thread ID mechanism and
323 replace it with a structure and associated callback type. This
324 mechanism allows a numeric "hash" to be extracted from a thread ID in
325 either case, and on platforms where pointers are larger than 'long',
326 mixing is done to help ensure the numeric 'hash' is usable even if it
327 can't be guaranteed unique. The default mechanism is to use "&errno"
328 as a pointer-based thread ID to distinguish between threads.
330 Applications that want to provide their own thread IDs should now use
331 CRYPTO_THREADID_set_callback() to register a callback that will call
332 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
334 Note that ERR_remove_state() is now deprecated, because it is tied
335 to the assumption that thread IDs are numeric. ERR_remove_state(0)
336 to free the current thread's error state should be replaced by
337 ERR_remove_thread_state(NULL).
339 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
340 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
341 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
342 application was previously providing a numeric thread callback that
343 was inappropriate for distinguishing threads, then uniqueness might
344 have been obtained with &errno that happened immediately in the
345 intermediate development versions of OpenSSL; this is no longer the
346 case, the numeric thread callback will now override the automatic use
348 [Geoff Thorpe, with help from Bodo Moeller]
350 *) Initial support for different CRL issuing certificates. This covers a
351 simple case where the self issued certificates in the chain exist and
352 the real CRL issuer is higher in the existing chain.
354 This work was sponsored by Google.
357 *) Removed effectively defunct crypto/store from the build.
360 *) Revamp of STACK to provide stronger type-checking. Still to come:
361 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
362 ASN1_STRING, CONF_VALUE.
365 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
366 RAM on SSL connections. This option can save about 34k per idle SSL.
369 *) Revamp of LHASH to provide stronger type-checking. Still to come:
370 STACK, TXT_DB, bsearch, qsort.
373 *) Initial support for Cryptographic Message Syntax (aka CMS) based
374 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
375 support for data, signedData, compressedData, digestedData and
376 encryptedData, envelopedData types included. Scripts to check against
377 RFC4134 examples draft and interop and consistency checks of many
378 content types and variants.
381 *) Add options to enc utility to support use of zlib compression BIO.
384 *) Extend mk1mf to support importing of options and assembly language
385 files from Configure script, currently only included in VC-WIN32.
386 The assembly language rules can now optionally generate the source
387 files from the associated perl scripts.
390 *) Implement remaining functionality needed to support GOST ciphersuites.
391 Interop testing has been performed using CryptoPro implementations.
392 [Victor B. Wagner <vitus@cryptocom.ru>]
394 *) s390x assembler pack.
397 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
401 *) Implement Opaque PRF Input TLS extension as specified in
402 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
403 official specification yet and no extension type assignment by
404 IANA exists, this extension (for now) will have to be explicitly
405 enabled when building OpenSSL by providing the extension number
406 to use. For example, specify an option
408 -DTLSEXT_TYPE_opaque_prf_input=0x9527
410 to the "config" or "Configure" script to enable the extension,
411 assuming extension number 0x9527 (which is a completely arbitrary
412 and unofficial assignment based on the MD5 hash of the Internet
413 Draft). Note that by doing so, you potentially lose
414 interoperability with other TLS implementations since these might
415 be using the same extension number for other purposes.
417 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
418 opaque PRF input value to use in the handshake. This will create
419 an interal copy of the length-'len' string at 'src', and will
420 return non-zero for success.
422 To get more control and flexibility, provide a callback function
425 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
426 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
430 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
433 Callback function 'cb' will be called in handshakes, and is
434 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
435 Argument 'arg' is for application purposes (the value as given to
436 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
437 be provided to the callback function). The callback function
438 has to return non-zero to report success: usually 1 to use opaque
439 PRF input just if possible, or 2 to enforce use of the opaque PRF
440 input. In the latter case, the library will abort the handshake
441 if opaque PRF input is not successfully negotiated.
443 Arguments 'peerinput' and 'len' given to the callback function
444 will always be NULL and 0 in the case of a client. A server will
445 see the client's opaque PRF input through these variables if
446 available (NULL and 0 otherwise). Note that if the server
447 provides an opaque PRF input, the length must be the same as the
448 length of the client's opaque PRF input.
450 Note that the callback function will only be called when creating
451 a new session (session resumption can resume whatever was
452 previously negotiated), and will not be called in SSL 2.0
453 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
454 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
455 for applications that need to enforce opaque PRF input.
459 *) Update ssl code to support digests other than SHA1+MD5 for handshake
462 [Victor B. Wagner <vitus@cryptocom.ru>]
464 *) Add RFC4507 support to OpenSSL. This includes the corrections in
465 RFC4507bis. The encrypted ticket format is an encrypted encoded
466 SSL_SESSION structure, that way new session features are automatically
469 If a client application caches session in an SSL_SESSION structure
470 support is transparent because tickets are now stored in the encoded
473 The SSL_CTX structure automatically generates keys for ticket
474 protection in servers so again support should be possible
475 with no application modification.
477 If a client or server wishes to disable RFC4507 support then the option
478 SSL_OP_NO_TICKET can be set.
480 Add a TLS extension debugging callback to allow the contents of any client
481 or server extensions to be examined.
483 This work was sponsored by Google.
486 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
487 OpenSSL should now compile cleanly on gcc 4.2
488 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
490 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
491 support including streaming MAC support: this is required for GOST
493 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
495 *) Add option -stream to use PKCS#7 streaming in smime utility. New
496 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
497 to output in BER and PEM format.
500 *) Experimental support for use of HMAC via EVP_PKEY interface. This
501 allows HMAC to be handled via the EVP_DigestSign*() interface. The
502 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
503 ENGINE support for HMAC keys which are unextractable. New -mac and
504 -macopt options to dgst utility.
507 *) New option -sigopt to dgst utility. Update dgst to use
508 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
509 alternative signing paramaters such as X9.31 or PSS in the dgst
513 *) Change ssl_cipher_apply_rule(), the internal function that does
514 the work each time a ciphersuite string requests enabling
515 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
516 removing ("!foo+bar") a class of ciphersuites: Now it maintains
517 the order of disabled ciphersuites such that those ciphersuites
518 that most recently went from enabled to disabled not only stay
519 in order with respect to each other, but also have higher priority
520 than other disabled ciphersuites the next time ciphersuites are
523 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
524 the same ciphersuites as with "HIGH" alone, but in a specific
525 order where the PSK ciphersuites come first (since they are the
526 most recently disabled ciphersuites when "HIGH" is parsed).
528 Also, change ssl_create_cipher_list() (using this new
529 funcionality) such that between otherwise identical
530 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
534 *) Change ssl_create_cipher_list() so that it automatically
535 arranges the ciphersuites in reasonable order before starting
536 to process the rule string. Thus, the definition for "DEFAULT"
537 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
538 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
539 This makes it much easier to arrive at a reasonable default order
540 in applications for which anonymous ciphers are OK (meaning
541 that you can't actually use DEFAULT).
542 [Bodo Moeller; suggested by Victor Duchovni]
544 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
545 processing) into multiple integers instead of setting
546 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
547 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
548 (These masks as well as the individual bit definitions are hidden
549 away into the non-exported interface ssl/ssl_locl.h, so this
550 change to the definition of the SSL_CIPHER structure shouldn't
551 affect applications.) This give us more bits for each of these
552 categories, so there is no longer a need to coagulate AES128 and
553 AES256 into a single algorithm bit, and to coagulate Camellia128
554 and Camellia256 into a single algorithm bit, which has led to all
557 Thus, among other things, the kludge introduced in 0.9.7m and
558 0.9.8e for masking out AES256 independently of AES128 or masking
559 out Camellia256 independently of AES256 is not needed here in 0.9.9.
561 With the change, we also introduce new ciphersuite aliases that
562 so far were missing: "AES128", "AES256", "CAMELLIA128", and
566 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
567 Use the leftmost N bytes of the signature input if the input is
568 larger than the prime q (with N being the size in bytes of q).
571 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
572 it yet and it is largely untested.
575 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
578 *) Initial incomplete changes to avoid need for function casts in OpenSSL
579 some compilers (gcc 4.2 and later) reject their use. Safestack is
580 reimplemented. Update ASN1 to avoid use of legacy functions.
583 *) Win32/64 targets are linked with Winsock2.
586 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
587 to external functions. This can be used to increase CRL handling
588 efficiency especially when CRLs are very large by (for example) storing
589 the CRL revoked certificates in a database.
592 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
593 new CRLs added to a directory can be used. New command line option
594 -verify_return_error to s_client and s_server. This causes real errors
595 to be returned by the verify callback instead of carrying on no matter
596 what. This reflects the way a "real world" verify callback would behave.
599 *) GOST engine, supporting several GOST algorithms and public key formats.
600 Kindly donated by Cryptocom.
603 *) Partial support for Issuing Distribution Point CRL extension. CRLs
604 partitioned by DP are handled but no indirect CRL or reason partitioning
605 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
606 selected via a scoring technique which handles IDP and AKID in CRLs.
609 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
610 will ultimately be used for all verify operations: this will remove the
611 X509_STORE dependency on certificate verification and allow alternative
612 lookup methods. X509_STORE based implementations of these two callbacks.
615 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
616 Modify get_crl() to find a valid (unexpired) CRL if possible.
619 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
620 this would be called X509_CRL_cmp() but that name is already used by
621 a function that just compares CRL issuer names. Cache several CRL
622 extensions in X509_CRL structure and cache CRLDP in X509.
625 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
626 this maps equivalent X509_NAME structures into a consistent structure.
627 Name comparison can then be performed rapidly using memcmp().
630 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
634 *) Allow digests to supply their own micalg string for S/MIME type using
635 the ctrl EVP_MD_CTRL_MICALG.
638 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
639 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
640 ctrl. It can then customise the structure before and/or after signing
644 *) New function OBJ_add_sigid() to allow application defined signature OIDs
645 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
646 to free up any added signature OIDs.
649 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
650 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
651 digest and cipher tables. New options added to openssl utility:
652 list-message-digest-algorithms and list-cipher-algorithms.
655 *) Change the array representation of binary polynomials: the list
656 of degrees of non-zero coefficients is now terminated with -1.
657 Previously it was terminated with 0, which was also part of the
658 value; thus, the array representation was not applicable to
659 polynomials where t^0 has coefficient zero. This change makes
660 the array representation useful in a more general context.
663 *) Various modifications and fixes to SSL/TLS cipher string
664 handling. For ECC, the code now distinguishes between fixed ECDH
665 with RSA certificates on the one hand and with ECDSA certificates
666 on the other hand, since these are separate ciphersuites. The
667 unused code for Fortezza ciphersuites has been removed.
669 For consistency with EDH, ephemeral ECDH is now called "EECDH"
670 (not "ECDHE"). For consistency with the code for DH
671 certificates, use of ECDH certificates is now considered ECDH
672 authentication, not RSA or ECDSA authentication (the latter is
673 merely the CA's signing algorithm and not actively used in the
676 The temporary ciphersuite alias "ECCdraft" is no longer
677 available, and ECC ciphersuites are no longer excluded from "ALL"
678 and "DEFAULT". The following aliases now exist for RFC 4492
679 ciphersuites, most of these by analogy with the DH case:
681 kECDHr - ECDH cert, signed with RSA
682 kECDHe - ECDH cert, signed with ECDSA
683 kECDH - ECDH cert (signed with either RSA or ECDSA)
684 kEECDH - ephemeral ECDH
685 ECDH - ECDH cert or ephemeral ECDH
691 AECDH - anonymous ECDH
692 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
696 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
697 Use correct micalg parameters depending on digest(s) in signed message.
700 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
701 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
704 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
705 an engine to register a method. Add ENGINE lookups for methods and
706 functional reference processing.
709 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
710 EVP_{Sign,Verify}* which allow an application to customise the signature
714 *) New -resign option to smime utility. This adds one or more signers
715 to an existing PKCS#7 signedData structure. Also -md option to use an
716 alternative message digest algorithm for signing.
719 *) Tidy up PKCS#7 routines and add new functions to make it easier to
720 create PKCS7 structures containing multiple signers. Update smime
721 application to support multiple signers.
724 *) New -macalg option to pkcs12 utility to allow setting of an alternative
728 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
729 Reorganize PBE internals to lookup from a static table using NIDs,
730 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
731 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
732 PRF which will be automatically used with PBES2.
735 *) Replace the algorithm specific calls to generate keys in "req" with the
739 *) Update PKCS#7 enveloped data routines to use new API. This is now
740 supported by any public key method supporting the encrypt operation. A
741 ctrl is added to allow the public key algorithm to examine or modify
742 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
746 *) Add a ctrl to asn1 method to allow a public key algorithm to express
747 a default digest type to use. In most cases this will be SHA1 but some
748 algorithms (such as GOST) need to specify an alternative digest. The
749 return value indicates how strong the prefernce is 1 means optional and
750 2 is mandatory (that is it is the only supported type). Modify
751 ASN1_item_sign() to accept a NULL digest argument to indicate it should
752 use the default md. Update openssl utilities to use the default digest
753 type for signing if it is not explicitly indicated.
756 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
757 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
758 signing method from the key type. This effectively removes the link
759 between digests and public key types.
762 *) Add an OID cross reference table and utility functions. Its purpose is to
763 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
764 rsaEncryption. This will allow some of the algorithm specific hackery
765 needed to use the correct OID to be removed.
768 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
769 structures for PKCS7_sign(). They are now set up by the relevant public
773 *) Add provisional EC pkey method with support for ECDSA and ECDH.
776 *) Add support for key derivation (agreement) in the API, DH method and
780 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
781 public and private key formats. As a side effect these add additional
782 command line functionality not previously available: DSA signatures can be
783 generated and verified using pkeyutl and DH key support and generation in
788 [Oliver Tappe <zooey@hirschkaefer.de>]
790 *) New make target "install_html_docs" installs HTML renditions of the
792 [Oliver Tappe <zooey@hirschkaefer.de>]
794 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
795 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
796 support key and parameter generation and add initial key generation
797 functionality for RSA.
800 *) Add functions for main EVP_PKEY_method operations. The undocumented
801 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
802 EVP_PKEY_{encrypt,decrypt}_old.
805 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
806 key API, doesn't do much yet.
809 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
810 public key algorithms. New option to openssl utility:
811 "list-public-key-algorithms" to print out info.
814 *) Implement the Supported Elliptic Curves Extension for
815 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
818 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
819 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
822 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
823 utilities such as rsa, dsa, dsaparam etc except they process any key
827 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
828 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
829 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
833 *) Initial support for pluggable public key ASN1.
834 De-spaghettify the public key ASN1 handling. Move public and private
835 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
836 algorithm specific handling to a single module within the relevant
837 algorithm directory. Add functions to allow (near) opaque processing
838 of public and private key structures.
841 *) Implement the Supported Point Formats Extension for
842 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
845 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
846 for the psk identity [hint] and the psk callback functions to the
847 SSL_SESSION, SSL and SSL_CTX structure.
850 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
854 SSL_CTX_use_psk_identity_hint
855 SSL_get_psk_identity_hint
857 SSL_use_psk_identity_hint
859 [Mika Kousa and Pasi Eronen of Nokia Corporation]
861 *) Add RFC 3161 compliant time stamp request creation, response generation
862 and response verification functionality.
863 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
865 *) Add initial support for TLS extensions, specifically for the server_name
866 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
867 have new members for a host name. The SSL data structure has an
868 additional member SSL_CTX *initial_ctx so that new sessions can be
869 stored in that context to allow for session resumption, even after the
870 SSL has been switched to a new SSL_CTX in reaction to a client's
871 server_name extension.
873 New functions (subject to change):
876 SSL_get_servername_type()
879 New CTRL codes and macros (subject to change):
881 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
882 - SSL_CTX_set_tlsext_servername_callback()
883 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
884 - SSL_CTX_set_tlsext_servername_arg()
885 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
887 openssl s_client has a new '-servername ...' option.
889 openssl s_server has new options '-servername_host ...', '-cert2 ...',
890 '-key2 ...', '-servername_fatal' (subject to change). This allows
891 testing the HostName extension for a specific single host name ('-cert'
892 and '-key' remain fallbacks for handshakes without HostName
893 negotiation). If the unrecogninzed_name alert has to be sent, this by
894 default is a warning; it becomes fatal with the '-servername_fatal'
897 [Peter Sylvester, Remy Allais, Christophe Renou]
899 *) Whirlpool hash implementation is added.
902 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
903 bn(64,32). Because of instruction set limitations it doesn't have
904 any negative impact on performance. This was done mostly in order
905 to make it possible to share assembler modules, such as bn_mul_mont
906 implementations, between 32- and 64-bit builds without hassle.
909 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
910 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
914 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
915 dedicated Montgomery multiplication procedure, is introduced.
916 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
917 "64-bit" performance on certain 32-bit targets.
920 *) New option SSL_OP_NO_COMP to disable use of compression selectively
921 in SSL structures. New SSL ctrl to set maximum send fragment size.
922 Save memory by seeting the I/O buffer sizes dynamically instead of
923 using the maximum available value.
926 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
927 in addition to the text details.
930 *) Very, very preliminary EXPERIMENTAL support for printing of general
931 ASN1 structures. This currently produces rather ugly output and doesn't
932 handle several customised structures at all.
935 *) Integrated support for PVK file format and some related formats such
936 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
937 these in the 'rsa' and 'dsa' utilities.
940 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
943 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
944 place for the (very old) "NETSCAPE" format certificates which are now
945 handled using new ASN1 code equivalents.
948 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
949 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
950 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
953 *) Modify CRL distribution points extension code to print out previously
954 unsupported fields. Enhance extension setting code to allow setting of
958 *) Add print and set support for Issuing Distribution Point CRL extension.
961 *) Change 'Configure' script to enable Camellia by default.
964 Changes between 0.9.8n and 0.9.8o [xx XXX xxxx]
966 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
967 access or freeing data twice (CVE-2010-0742)
968 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
970 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
971 common in certificates and some applications which only call
972 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
975 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
977 *) When rejecting SSL/TLS records due to an incorrect version number, never
978 update s->server with a new major version number. As of
979 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
980 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
981 the previous behavior could result in a read attempt at NULL when
982 receiving specific incorrect SSL/TLS records once record payload
983 protection is active. (CVE-2010-####)
984 [Bodo Moeller, Adam Langley]
986 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
987 could be crashed if the relevant tables were not present (e.g. chrooted).
988 [Tomas Hoger <thoger@redhat.com>]
990 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
992 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
993 [Martin Olsson, Neel Mehta]
995 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
996 accommodate for stack sorting, always a write lock!).
999 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1000 excessive delays in the RAND_poll(): over a minute. As a workaround
1001 include a time check in the inner Heap32Next loop too.
1004 *) The code that handled flushing of data in SSL/TLS originally used the
1005 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1006 the problem outlined in PR#1949. The fix suggested there however can
1007 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1008 of Apache). So instead simplify the code to flush unconditionally.
1009 This should be fine since flushing with no data to flush is a no op.
1012 *) Handle TLS versions 2.0 and later properly and correctly use the
1013 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1014 off ancient servers have a habit of sticking around for a while...
1017 *) Modify compression code so it frees up structures without using the
1018 ex_data callbacks. This works around a problem where some applications
1019 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1020 restarting) then use compression (e.g. SSL with compression) later.
1021 This results in significant per-connection memory leaks and
1022 has caused some security issues including CVE-2008-1678 and
1026 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1027 change when encrypting or decrypting.
1030 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1031 connect and renegotiate with servers which do not support RI.
1032 Until RI is more widely deployed this option is enabled by default.
1035 *) Add "missing" ssl ctrls to clear options and mode.
1038 *) If client attempts to renegotiate and doesn't support RI respond with
1039 a no_renegotiation alert as required by RFC5746. Some renegotiating
1040 TLS clients will continue a connection gracefully when they receive
1041 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1042 waiting for a server hello which it will never receive. Now we treat a
1043 received no_renegotiation alert as a fatal error. This is because
1044 applications requesting a renegotiation might well expect it to succeed
1045 and would have no code in place to handle the server denying it so the
1046 only safe thing to do is to terminate the connection.
1049 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1050 peer supports secure renegotiation and 0 otherwise. Print out peer
1051 renegotiation support in s_client/s_server.
1054 *) Replace the highly broken and deprecated SPKAC certification method with
1055 the updated NID creation version. This should correctly handle UTF8.
1058 *) Implement RFC5746. Re-enable renegotiation but require the extension
1059 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1060 turns out to be a bad idea. It has been replaced by
1061 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1062 SSL_CTX_set_options(). This is really not recommended unless you
1063 know what you are doing.
1064 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1066 *) Fixes to stateless session resumption handling. Use initial_ctx when
1067 issuing and attempting to decrypt tickets in case it has changed during
1068 servername handling. Use a non-zero length session ID when attempting
1069 stateless session resumption: this makes it possible to determine if
1070 a resumption has occurred immediately after receiving server hello
1071 (several places in OpenSSL subtly assume this) instead of later in
1075 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1076 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1077 fixes for a few places where the return code is not checked
1079 [Julia Lawall <julia@diku.dk>]
1081 *) Add --strict-warnings option to Configure script to include devteam
1082 warnings in other configurations.
1085 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1086 makes it possible to install openssl libraries in locations which
1087 have names other than "lib", for example "/usr/lib64" which some
1089 [Steve Henson, based on patch from Jeremy Utley]
1091 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1092 X690 8.9.12 and can produce some misleading textual output of OIDs.
1093 [Steve Henson, reported by Dan Kaminsky]
1095 *) Delete MD2 from algorithm tables. This follows the recommendation in
1096 several standards that it is not used in new applications due to
1097 several cryptographic weaknesses. For binary compatibility reasons
1098 the MD2 API is still compiled in by default.
1101 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1105 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1106 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1108 [Guenter <lists@gknw.net>]
1110 *) Fix the server certificate chain building code to use X509_verify_cert(),
1111 it used to have an ad-hoc builder which was unable to cope with anything
1112 other than a simple chain.
1113 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1115 *) Don't check self signed certificate signatures in X509_verify_cert()
1116 by default (a flag can override this): it just wastes time without
1117 adding any security. As a useful side effect self signed root CAs
1118 with non-FIPS digests are now usable in FIPS mode.
1121 *) In dtls1_process_out_of_seq_message() the check if the current message
1122 is already buffered was missing. For every new message was memory
1123 allocated, allowing an attacker to perform an denial of service attack
1124 with sending out of seq handshake messages until there is no memory
1125 left. Additionally every future messege was buffered, even if the
1126 sequence number made no sense and would be part of another handshake.
1127 So only messages with sequence numbers less than 10 in advance will be
1128 buffered. (CVE-2009-1378)
1129 [Robin Seggelmann, discovered by Daniel Mentz]
1131 *) Records are buffered if they arrive with a future epoch to be
1132 processed after finishing the corresponding handshake. There is
1133 currently no limitation to this buffer allowing an attacker to perform
1134 a DOS attack with sending records with future epochs until there is no
1135 memory left. This patch adds the pqueue_size() function to detemine
1136 the size of a buffer and limits the record buffer to 100 entries.
1138 [Robin Seggelmann, discovered by Daniel Mentz]
1140 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1141 parent structure is freed. (CVE-2009-1379)
1144 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1145 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1148 [Ilya O. <vrghost@gmail.com>]
1150 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1152 *) Disable renegotiation completely - this fixes a severe security
1153 problem (CVE-2009-3555) at the cost of breaking all
1154 renegotiation. Renegotiation can be re-enabled by setting
1155 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1156 run-time. This is really not recommended unless you know what
1160 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1162 *) Don't set val to NULL when freeing up structures, it is freed up by
1163 underlying code. If sizeof(void *) > sizeof(long) this can result in
1164 zeroing past the valid field. (CVE-2009-0789)
1165 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1167 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1168 checked correctly. This would allow some invalid signed attributes to
1169 appear to verify correctly. (CVE-2009-0591)
1170 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1172 *) Reject UniversalString and BMPString types with invalid lengths. This
1173 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1174 a legal length. (CVE-2009-0590)
1177 *) Set S/MIME signing as the default purpose rather than setting it
1178 unconditionally. This allows applications to override it at the store
1182 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1183 to handle some structures.
1186 *) Improve efficiency of mem_gets: don't search whole buffer each time
1188 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1190 *) New -hex option for openssl rand.
1193 *) Print out UTF8String and NumericString when parsing ASN1.
1196 *) Support NumericString type for name components.
1199 *) Allow CC in the environment to override the automatically chosen
1200 compiler. Note that nothing is done to ensure flags work with the
1204 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1206 *) Properly check EVP_VerifyFinal() and similar return values
1208 [Ben Laurie, Bodo Moeller, Google Security Team]
1210 *) Enable TLS extensions by default.
1213 *) Allow the CHIL engine to be loaded, whether the application is
1214 multithreaded or not. (This does not release the developer from the
1215 obligation to set up the dynamic locking callbacks.)
1216 [Sander Temme <sander@temme.net>]
1218 *) Use correct exit code if there is an error in dgst command.
1219 [Steve Henson; problem pointed out by Roland Dirlewanger]
1221 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1222 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1225 *) Add experimental JPAKE support, including demo authentication in
1226 s_client and s_server.
1229 *) Set the comparison function in v3_addr_canonize().
1230 [Rob Austein <sra@hactrn.net>]
1232 *) Add support for XMPP STARTTLS in s_client.
1233 [Philip Paeps <philip@freebsd.org>]
1235 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1236 to ensure that even with this option, only ciphersuites in the
1237 server's preference list will be accepted. (Note that the option
1238 applies only when resuming a session, so the earlier behavior was
1239 just about the algorithm choice for symmetric cryptography.)
1242 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1244 *) Fix NULL pointer dereference if a DTLS server received
1245 ChangeCipherSpec as first record (CVE-2009-1386).
1248 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1249 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1252 *) The fix in 0.9.8c that supposedly got rid of unsafe
1253 double-checked locking was incomplete for RSA blinding,
1254 addressing just one layer of what turns out to have been
1255 doubly unsafe triple-checked locking.
1257 So now fix this for real by retiring the MONT_HELPER macro
1258 in crypto/rsa/rsa_eay.c.
1260 [Bodo Moeller; problem pointed out by Marius Schilder]
1262 *) Various precautionary measures:
1264 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1266 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1267 (NB: This would require knowledge of the secret session ticket key
1268 to exploit, in which case you'd be SOL either way.)
1270 - Change bn_nist.c so that it will properly handle input BIGNUMs
1271 outside the expected range.
1273 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1276 [Neel Mehta, Bodo Moeller]
1278 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1279 the load fails. Useful for distros.
1280 [Ben Laurie and the FreeBSD team]
1282 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1285 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1288 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1290 This work was sponsored by Logica.
1293 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1294 keystores. Support for SSL/TLS client authentication too.
1295 Not compiled unless enable-capieng specified to Configure.
1297 This work was sponsored by Logica.
1300 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1301 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1302 attribute creation routines such as certifcate requests and PKCS#12
1306 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1308 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1309 handshake which could lead to a cilent crash as found using the
1310 Codenomicon TLS test suite (CVE-2008-1672)
1311 [Steve Henson, Mark Cox]
1313 *) Fix double free in TLS server name extensions which could lead to
1314 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1317 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1319 Clear the error queue to ensure that error entries left from
1320 older function calls do not interfere with the correct operation.
1321 [Lutz Jaenicke, Erik de Castro Lopo]
1323 *) Remove root CA certificates of commercial CAs:
1325 The OpenSSL project does not recommend any specific CA and does not
1326 have any policy with respect to including or excluding any CA.
1327 Therefore it does not make any sense to ship an arbitrary selection
1328 of root CA certificates with the OpenSSL software.
1331 *) RSA OAEP patches to fix two separate invalid memory reads.
1332 The first one involves inputs when 'lzero' is greater than
1333 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1334 before the beginning of from). The second one involves inputs where
1335 the 'db' section contains nothing but zeroes (there is a one-byte
1336 invalid read after the end of 'db').
1337 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1339 *) Partial backport from 0.9.9-dev:
1341 Introduce bn_mul_mont (dedicated Montgomery multiplication
1342 procedure) as a candidate for BIGNUM assembler implementation.
1343 While 0.9.9-dev uses assembler for various architectures, only
1344 x86_64 is available by default here in the 0.9.8 branch, and
1345 32-bit x86 is available through a compile-time setting.
1347 To try the 32-bit x86 assembler implementation, use Configure
1348 option "enable-montasm" (which exists only for this backport).
1350 As "enable-montasm" for 32-bit x86 disclaims code stability
1351 anyway, in this constellation we activate additional code
1352 backported from 0.9.9-dev for further performance improvements,
1353 namely BN_from_montgomery_word. (To enable this otherwise,
1354 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1356 [Andy Polyakov (backport partially by Bodo Moeller)]
1358 *) Add TLS session ticket callback. This allows an application to set
1359 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1360 values. This is useful for key rollover for example where several key
1361 sets may exist with different names.
1364 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1365 This was broken until now in 0.9.8 releases, such that the only way
1366 a registered ENGINE could be used (assuming it initialises
1367 successfully on the host) was to explicitly set it as the default
1368 for the relevant algorithms. This is in contradiction with 0.9.7
1369 behaviour and the documentation. With this fix, when an ENGINE is
1370 registered into a given algorithm's table of implementations, the
1371 'uptodate' flag is reset so that auto-discovery will be used next
1372 time a new context for that algorithm attempts to select an
1374 [Ian Lister (tweaked by Geoff Thorpe)]
1376 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1377 implemention in the following ways:
1379 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1382 Lack of BER streaming support means one pass streaming processing is
1383 only supported if data is detached: setting the streaming flag is
1384 ignored for embedded content.
1386 CMS support is disabled by default and must be explicitly enabled
1387 with the enable-cms configuration option.
1390 *) Update the GMP engine glue to do direct copies between BIGNUM and
1391 mpz_t when openssl and GMP use the same limb size. Otherwise the
1392 existing "conversion via a text string export" trick is still used.
1393 [Paul Sheer <paulsheer@gmail.com>]
1395 *) Zlib compression BIO. This is a filter BIO which compressed and
1396 uncompresses any data passed through it.
1399 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1400 RFC3394 compatible AES key wrapping.
1403 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1404 sets string data without copying. X509_ALGOR_set0() and
1405 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1406 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1407 from an X509_ATTRIBUTE structure optionally checking it occurs only
1408 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1412 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1413 to get the expected BN_FLG_CONSTTIME behavior.
1414 [Bodo Moeller (Google)]
1418 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1419 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1420 - added some more tests to do_tests.pl
1421 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1422 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1423 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1424 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1425 - various changes to netware.pl to enable gcc-cross builds on Win32
1427 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1428 - various changes to fix missing prototype warnings
1429 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1430 - added AES, WHIRLPOOL and CPUID assembler code to build files
1431 - added missing AES assembler make rules to mk1mf.pl
1432 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1433 [Guenter Knauf <eflash@gmx.net>]
1435 *) Implement certificate status request TLS extension defined in RFC3546.
1436 A client can set the appropriate parameters and receive the encoded
1437 OCSP response via a callback. A server can query the supplied parameters
1438 and set the encoded OCSP response in the callback. Add simplified examples
1439 to s_client and s_server.
1442 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1444 *) Fix various bugs:
1445 + Binary incompatibility of ssl_ctx_st structure
1446 + DTLS interoperation with non-compliant servers
1447 + Don't call get_session_cb() without proposed session
1448 + Fix ia64 assembler code
1449 [Andy Polyakov, Steve Henson]
1451 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1453 *) DTLS Handshake overhaul. There were longstanding issues with
1454 OpenSSL DTLS implementation, which were making it impossible for
1455 RFC 4347 compliant client to communicate with OpenSSL server.
1456 Unfortunately just fixing these incompatibilities would "cut off"
1457 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1458 server keeps tolerating non RFC compliant syntax. The opposite is
1459 not true, 0.9.8f client can not communicate with earlier server.
1460 This update even addresses CVE-2007-4995.
1463 *) Changes to avoid need for function casts in OpenSSL: some compilers
1464 (gcc 4.2 and later) reject their use.
1465 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1468 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1469 RFC4507bis. The encrypted ticket format is an encrypted encoded
1470 SSL_SESSION structure, that way new session features are automatically
1473 If a client application caches session in an SSL_SESSION structure
1474 support is transparent because tickets are now stored in the encoded
1477 The SSL_CTX structure automatically generates keys for ticket
1478 protection in servers so again support should be possible
1479 with no application modification.
1481 If a client or server wishes to disable RFC4507 support then the option
1482 SSL_OP_NO_TICKET can be set.
1484 Add a TLS extension debugging callback to allow the contents of any client
1485 or server extensions to be examined.
1487 This work was sponsored by Google.
1490 *) Add initial support for TLS extensions, specifically for the server_name
1491 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1492 have new members for a host name. The SSL data structure has an
1493 additional member SSL_CTX *initial_ctx so that new sessions can be
1494 stored in that context to allow for session resumption, even after the
1495 SSL has been switched to a new SSL_CTX in reaction to a client's
1496 server_name extension.
1498 New functions (subject to change):
1500 SSL_get_servername()
1501 SSL_get_servername_type()
1504 New CTRL codes and macros (subject to change):
1506 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1507 - SSL_CTX_set_tlsext_servername_callback()
1508 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1509 - SSL_CTX_set_tlsext_servername_arg()
1510 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1512 openssl s_client has a new '-servername ...' option.
1514 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1515 '-key2 ...', '-servername_fatal' (subject to change). This allows
1516 testing the HostName extension for a specific single host name ('-cert'
1517 and '-key' remain fallbacks for handshakes without HostName
1518 negotiation). If the unrecogninzed_name alert has to be sent, this by
1519 default is a warning; it becomes fatal with the '-servername_fatal'
1522 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1524 *) Add AES and SSE2 assembly language support to VC++ build.
1527 *) Mitigate attack on final subtraction in Montgomery reduction.
1530 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1531 (which previously caused an internal error).
1534 *) Squeeze another 10% out of IGE mode when in != out.
1537 *) AES IGE mode speedup.
1538 [Dean Gaudet (Google)]
1540 *) Add the Korean symmetric 128-bit cipher SEED (see
1541 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1542 add SEED ciphersuites from RFC 4162:
1544 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1545 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1546 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1547 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1549 To minimize changes between patchlevels in the OpenSSL 0.9.8
1550 series, SEED remains excluded from compilation unless OpenSSL
1551 is configured with 'enable-seed'.
1552 [KISA, Bodo Moeller]
1554 *) Mitigate branch prediction attacks, which can be practical if a
1555 single processor is shared, allowing a spy process to extract
1556 information. For detailed background information, see
1557 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1558 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1559 and Necessary Software Countermeasures"). The core of the change
1560 are new versions BN_div_no_branch() and
1561 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1562 respectively, which are slower, but avoid the security-relevant
1563 conditional branches. These are automatically called by BN_div()
1564 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1565 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1566 remove a conditional branch.
1568 BN_FLG_CONSTTIME is the new name for the previous
1569 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1570 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1571 in the exponent causes BN_mod_exp_mont() to use the alternative
1572 implementation in BN_mod_exp_mont_consttime().) The old name
1573 remains as a deprecated alias.
1575 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1576 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1577 constant-time implementations for more than just exponentiation.
1578 Here too the old name is kept as a deprecated alias.
1580 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1581 the BN_BLINDING structure gets an independent copy of the
1582 modulus. This means that the previous "BIGNUM *m" argument to
1583 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1584 essentially becomes "const BIGNUM *m", although we can't actually
1585 change this in the header file before 0.9.9. It allows
1586 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1587 enable BN_FLG_CONSTTIME.
1589 [Matthew D Wood (Intel Corp)]
1591 *) In the SSL/TLS server implementation, be strict about session ID
1592 context matching (which matters if an application uses a single
1593 external cache for different purposes). Previously,
1594 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1595 set. This did ensure strict client verification, but meant that,
1596 with applications using a single external cache for quite
1597 different requirements, clients could circumvent ciphersuite
1598 restrictions for a given session ID context by starting a session
1599 in a different context.
1602 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1603 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1604 authentication-only ciphersuites.
1607 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1608 not complete and could lead to a possible single byte overflow
1609 (CVE-2007-5135) [Ben Laurie]
1611 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1613 *) Since AES128 and AES256 (and similarly Camellia128 and
1614 Camellia256) share a single mask bit in the logic of
1615 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1616 kludge to work properly if AES128 is available and AES256 isn't
1617 (or if Camellia128 is available and Camellia256 isn't).
1620 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1621 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1622 When a point or a seed is encoded in a BIT STRING, we need to
1623 prevent the removal of trailing zero bits to get the proper DER
1624 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1625 of a NamedBitList, for which trailing 0 bits need to be removed.)
1628 *) Have SSL/TLS server implementation tolerate "mismatched" record
1629 protocol version while receiving ClientHello even if the
1630 ClientHello is fragmented. (The server can't insist on the
1631 particular protocol version it has chosen before the ServerHello
1632 message has informed the client about his choice.)
1635 *) Add RFC 3779 support.
1636 [Rob Austein for ARIN, Ben Laurie]
1638 *) Load error codes if they are not already present instead of using a
1639 static variable. This allows them to be cleanly unloaded and reloaded.
1640 Improve header file function name parsing.
1643 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1644 or CAPABILITY handshake as required by RFCs.
1647 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1649 *) Introduce limits to prevent malicious keys being able to
1650 cause a denial of service. (CVE-2006-2940)
1651 [Steve Henson, Bodo Moeller]
1653 *) Fix ASN.1 parsing of certain invalid structures that can result
1654 in a denial of service. (CVE-2006-2937) [Steve Henson]
1656 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1657 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1659 *) Fix SSL client code which could crash if connecting to a
1660 malicious SSLv2 server. (CVE-2006-4343)
1661 [Tavis Ormandy and Will Drewry, Google Security Team]
1663 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1664 match only those. Before that, "AES256-SHA" would be interpreted
1665 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1666 the same strength classification in 0.9.7h) as we currently only
1667 have a single AES bit in the ciphersuite description bitmap.
1668 That change, however, also applied to ciphersuite strings such as
1669 "RC4-MD5" that intentionally matched multiple ciphersuites --
1670 namely, SSL 2.0 ciphersuites in addition to the more common ones
1671 from SSL 3.0/TLS 1.0.
1673 So we change the selection algorithm again: Naming an explicit
1674 ciphersuite selects this one ciphersuite, and any other similar
1675 ciphersuite (same bitmap) from *other* protocol versions.
1676 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1677 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1679 Since SSL 2.0 does not have any ciphersuites for which the
1680 128/256 bit distinction would be relevant, this works for now.
1681 The proper fix will be to use different bits for AES128 and
1682 AES256, which would have avoided the problems from the beginning;
1683 however, bits are scarce, so we can only do this in a new release
1684 (not just a patchlevel) when we can change the SSL_CIPHER
1685 definition to split the single 'unsigned long mask' bitmap into
1686 multiple values to extend the available space.
1690 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1692 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1693 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1695 *) Add AES IGE and biIGE modes.
1698 *) Change the Unix randomness entropy gathering to use poll() when
1699 possible instead of select(), since the latter has some
1700 undesirable limitations.
1701 [Darryl Miles via Richard Levitte and Bodo Moeller]
1703 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1704 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1705 cannot be implicitly activated as part of, e.g., the "AES" alias.
1706 However, please upgrade to OpenSSL 0.9.9[-dev] for
1707 non-experimental use of the ECC ciphersuites to get TLS extension
1708 support, which is required for curve and point format negotiation
1709 to avoid potential handshake problems.
1712 *) Disable rogue ciphersuites:
1714 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1715 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1716 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1718 The latter two were purportedly from
1719 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1722 Also deactivate the remaining ciphersuites from
1723 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1724 unofficial, and the ID has long expired.
1727 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1728 dual-core machines) and other potential thread-safety issues.
1731 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1732 versions), which is now available for royalty-free use
1733 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1734 Also, add Camellia TLS ciphersuites from RFC 4132.
1736 To minimize changes between patchlevels in the OpenSSL 0.9.8
1737 series, Camellia remains excluded from compilation unless OpenSSL
1738 is configured with 'enable-camellia'.
1741 *) Disable the padding bug check when compression is in use. The padding
1742 bug check assumes the first packet is of even length, this is not
1743 necessarily true if compresssion is enabled and can result in false
1744 positives causing handshake failure. The actual bug test is ancient
1745 code so it is hoped that implementations will either have fixed it by
1746 now or any which still have the bug do not support compression.
1749 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1751 *) When applying a cipher rule check to see if string match is an explicit
1752 cipher suite and only match that one cipher suite if it is.
1755 *) Link in manifests for VC++ if needed.
1756 [Austin Ziegler <halostatue@gmail.com>]
1758 *) Update support for ECC-based TLS ciphersuites according to
1759 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1760 TLS extensions, which are supported starting with the 0.9.9
1761 branch, not in the OpenSSL 0.9.8 branch).
1764 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1765 opaque EVP_CIPHER_CTX handling.
1768 *) Fixes and enhancements to zlib compression code. We now only use
1769 "zlib1.dll" and use the default __cdecl calling convention on Win32
1770 to conform with the standards mentioned here:
1771 http://www.zlib.net/DLL_FAQ.txt
1772 Static zlib linking now works on Windows and the new --with-zlib-include
1773 --with-zlib-lib options to Configure can be used to supply the location
1774 of the headers and library. Gracefully handle case where zlib library
1778 *) Several fixes and enhancements to the OID generation code. The old code
1779 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1780 handle numbers larger than ULONG_MAX, truncated printing and had a
1781 non standard OBJ_obj2txt() behaviour.
1784 *) Add support for building of engines under engine/ as shared libraries
1785 under VC++ build system.
1788 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1789 Hopefully, we will not see any false combination of paths any more.
1792 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1794 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1795 (part of SSL_OP_ALL). This option used to disable the
1796 countermeasure against man-in-the-middle protocol-version
1797 rollback in the SSL 2.0 server implementation, which is a bad
1798 idea. (CVE-2005-2969)
1800 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1801 for Information Security, National Institute of Advanced Industrial
1802 Science and Technology [AIST], Japan)]
1804 *) Add two function to clear and return the verify parameter flags.
1807 *) Keep cipherlists sorted in the source instead of sorting them at
1808 runtime, thus removing the need for a lock.
1811 *) Avoid some small subgroup attacks in Diffie-Hellman.
1812 [Nick Mathewson and Ben Laurie]
1814 *) Add functions for well-known primes.
1817 *) Extended Windows CE support.
1818 [Satoshi Nakamura and Andy Polyakov]
1820 *) Initialize SSL_METHOD structures at compile time instead of during
1821 runtime, thus removing the need for a lock.
1824 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1825 attempting to decrypt each encrypted key in turn. Add support to
1829 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1831 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1834 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1837 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1838 key into the same file any more.
1841 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1844 *) Add -utf8 command line and config file option to 'ca'.
1845 [Stefan <stf@udoma.org]
1847 *) Removed the macro des_crypt(), as it seems to conflict with some
1848 libraries. Use DES_crypt().
1851 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1852 involves renaming the source and generated shared-libs for
1853 both. The engines will accept the corrected or legacy ids
1854 ('ncipher' and '4758_cca' respectively) when binding. NB,
1855 this only applies when building 'shared'.
1856 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1858 *) Add attribute functions to EVP_PKEY structure. Modify
1859 PKCS12_create() to recognize a CSP name attribute and
1860 use it. Make -CSP option work again in pkcs12 utility.
1863 *) Add new functionality to the bn blinding code:
1864 - automatic re-creation of the BN_BLINDING parameters after
1865 a fixed number of uses (currently 32)
1866 - add new function for parameter creation
1867 - introduce flags to control the update behaviour of the
1868 BN_BLINDING parameters
1869 - hide BN_BLINDING structure
1870 Add a second BN_BLINDING slot to the RSA structure to improve
1871 performance when a single RSA object is shared among several
1875 *) Add support for DTLS.
1876 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1878 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1879 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1882 *) Remove buggy and incompletet DH cert support from
1883 ssl/ssl_rsa.c and ssl/s3_both.c
1886 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1887 the apps/openssl applications.
1890 *) Compile clean with "-Wall -Wmissing-prototypes
1891 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1892 DEBUG_SAFESTACK must also be set.
1895 *) Change ./Configure so that certain algorithms can be disabled by default.
1896 The new counterpiece to "no-xxx" is "enable-xxx".
1898 The patented RC5 and MDC2 algorithms will now be disabled unless
1899 "enable-rc5" and "enable-mdc2", respectively, are specified.
1901 (IDEA remains enabled despite being patented. This is because IDEA
1902 is frequently required for interoperability, and there is no license
1903 fee for non-commercial use. As before, "no-idea" can be used to
1904 avoid this algorithm.)
1908 *) Add processing of proxy certificates (see RFC 3820). This work was
1909 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1910 EGEE (Enabling Grids for E-science in Europe).
1913 *) RC4 performance overhaul on modern architectures/implementations, such
1914 as Intel P4, IA-64 and AMD64.
1917 *) New utility extract-section.pl. This can be used specify an alternative
1918 section number in a pod file instead of having to treat each file as
1919 a separate case in Makefile. This can be done by adding two lines to the
1922 =for comment openssl_section:XXX
1924 The blank line is mandatory.
1928 *) New arguments -certform, -keyform and -pass for s_client and s_server
1929 to allow alternative format key and certificate files and passphrase
1933 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
1934 update associated structures and add various utility functions.
1936 Add new policy related verify parameters, include policy checking in
1937 standard verify code. Enhance 'smime' application with extra parameters
1938 to support policy checking and print out.
1941 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
1942 Nehemiah processors. These extensions support AES encryption in hardware
1943 as well as RNG (though RNG support is currently disabled).
1944 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
1946 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
1949 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
1950 [Andy Polyakov and a number of other people]
1952 *) Improved PowerPC platform support. Most notably BIGNUM assembler
1953 implementation contributed by IBM.
1954 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
1956 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
1957 exponent rather than 'unsigned long'. There is a corresponding change to
1958 the new 'rsa_keygen' element of the RSA_METHOD structure.
1959 [Jelte Jansen, Geoff Thorpe]
1961 *) Functionality for creating the initial serial number file is now
1962 moved from CA.pl to the 'ca' utility with a new option -create_serial.
1964 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
1965 number file to 1, which is bound to cause problems. To avoid
1966 the problems while respecting compatibility between different 0.9.7
1967 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
1968 CA.pl for serial number initialization. With the new release 0.9.8,
1969 we can fix the problem directly in the 'ca' utility.)
1972 *) Reduced header interdepencies by declaring more opaque objects in
1973 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
1974 give fewer recursive includes, which could break lazy source code - so
1975 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
1976 developers should define this symbol when building and using openssl to
1977 ensure they track the recommended behaviour, interfaces, [etc], but
1978 backwards-compatible behaviour prevails when this isn't defined.
1981 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
1984 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
1985 This will generate a random key of the appropriate length based on the
1986 cipher context. The EVP_CIPHER can provide its own random key generation
1987 routine to support keys of a specific form. This is used in the des and
1988 3des routines to generate a key of the correct parity. Update S/MIME
1989 code to use new functions and hence generate correct parity DES keys.
1990 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
1991 valid (weak or incorrect parity).
1994 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
1995 as looking them up. This is useful when the verified structure may contain
1996 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
1997 present unless the new PKCS7_NO_CRL flag is asserted.
2000 *) Extend ASN1 oid configuration module. It now additionally accepts the
2003 shortName = some long name, 1.2.3.4
2006 *) Reimplemented the BN_CTX implementation. There is now no more static
2007 limitation on the number of variables it can handle nor the depth of the
2008 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2009 information can now expand as required, and rather than having a single
2010 static array of bignums, BN_CTX now uses a linked-list of such arrays
2011 allowing it to expand on demand whilst maintaining the usefulness of
2012 BN_CTX's "bundling".
2015 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2016 to allow all RSA operations to function using a single BN_CTX.
2019 *) Preliminary support for certificate policy evaluation and checking. This
2020 is initially intended to pass the tests outlined in "Conformance Testing
2021 of Relying Party Client Certificate Path Processing Logic" v1.07.
2024 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2025 remained unused and not that useful. A variety of other little bignum
2026 tweaks and fixes have also been made continuing on from the audit (see
2030 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2031 associated ASN1, EVP and SSL functions and old ASN1 macros.
2034 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2035 and this should never fail. So the return value from the use of
2036 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2037 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2040 *) BN_CTX_get() should return zero-valued bignums, providing the same
2041 initialised value as BN_new().
2042 [Geoff Thorpe, suggested by Ulf Möller]
2044 *) Support for inhibitAnyPolicy certificate extension.
2047 *) An audit of the BIGNUM code is underway, for which debugging code is
2048 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2049 is considered valid when processing BIGNUMs, and causes execution to
2050 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2051 further steps are taken to deliberately pollute unused data in BIGNUM
2052 structures to try and expose faulty code further on. For now, openssl will
2053 (in its default mode of operation) continue to tolerate the inconsistent
2054 forms that it has tolerated in the past, but authors and packagers should
2055 consider trying openssl and their own applications when compiled with
2056 these debugging symbols defined. It will help highlight potential bugs in
2057 their own code, and will improve the test coverage for OpenSSL itself. At
2058 some point, these tighter rules will become openssl's default to improve
2059 maintainability, though the assert()s and other overheads will remain only
2060 in debugging configurations. See bn.h for more details.
2061 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2063 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2064 that can only be obtained through BN_CTX_new() (which implicitly
2065 initialises it). The presence of this function only made it possible
2066 to overwrite an existing structure (and cause memory leaks).
2069 *) Because of the callback-based approach for implementing LHASH as a
2070 template type, lh_insert() adds opaque objects to hash-tables and
2071 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2072 to clean up those corresponding objects before destroying the hash table
2073 (and losing the object pointers). So some over-zealous constifications in
2074 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2075 objects as "const" and the lh_doall[_arg] callback wrappers are not
2076 prototyped to have "const" restrictions on the object pointers they are
2077 given (and so aren't required to cast them away any more).
2080 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2081 (speed) prefers to use its own implementation. The two implementations
2082 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2083 its object type properly exposed (MS_TM) instead of casting to/from "char
2084 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2085 aren't necessarily the greatest nomenclatures - but this is what was used
2086 internally to the implementation so I've used that for now.
2089 *) Ensure that deprecated functions do not get compiled when
2090 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2091 the self-tests were still using deprecated key-generation functions so
2092 these have been updated also.
2095 *) Reorganise PKCS#7 code to separate the digest location functionality
2096 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2097 New function PKCS7_set_digest() to set the digest type for PKCS#7
2098 digestedData type. Add additional code to correctly generate the
2099 digestedData type and add support for this type in PKCS7 initialization
2103 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2104 structure of type "other".
2107 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2108 sure the loop does correctly stop and breaking ("division by zero")
2109 modulus operations are not performed. The (pre-generated) prime
2110 table crypto/bn/bn_prime.h was already correct, but it could not be
2111 re-generated on some platforms because of the "division by zero"
2112 situation in the script.
2113 [Ralf S. Engelschall]
2115 *) Update support for ECC-based TLS ciphersuites according to
2116 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2117 SHA-1 now is only used for "small" curves (where the
2118 representation of a field element takes up to 24 bytes); for
2119 larger curves, the field element resulting from ECDH is directly
2120 used as premaster secret.
2121 [Douglas Stebila (Sun Microsystems Laboratories)]
2123 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2124 curve secp160r1 to the tests.
2125 [Douglas Stebila (Sun Microsystems Laboratories)]
2127 *) Add the possibility to load symbols globally with DSO.
2128 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2130 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2131 control of the error stack.
2134 *) Add support for STORE in ENGINE.
2137 *) Add the STORE type. The intention is to provide a common interface
2138 to certificate and key stores, be they simple file-based stores, or
2139 HSM-type store, or LDAP stores, or...
2140 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2143 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2144 pass a list of arguments to any function as well as provide a way
2145 for a function to pass data back to the caller.
2148 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2149 works like BUF_strdup() but can be used to duplicate a portion of
2150 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2154 *) Add the function sk_find_ex() which works like sk_find(), but will
2155 return an index to an element even if an exact match couldn't be
2156 found. The index is guaranteed to point at the element where the
2157 searched-for key would be inserted to preserve sorting order.
2160 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2161 takes an extra flags argument for optional functionality. Currently,
2162 the following flags are defined:
2164 OBJ_BSEARCH_VALUE_ON_NOMATCH
2165 This one gets OBJ_bsearch_ex() to return a pointer to the first
2166 element where the comparing function returns a negative or zero
2169 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2170 This one gets OBJ_bsearch_ex() to return a pointer to the first
2171 element where the comparing function returns zero. This is useful
2172 if there are more than one element where the comparing function
2176 *) Make it possible to create self-signed certificates with 'openssl ca'
2177 in such a way that the self-signed certificate becomes part of the
2178 CA database and uses the same mechanisms for serial number generation
2179 as all other certificate signing. The new flag '-selfsign' enables
2180 this functionality. Adapt CA.sh and CA.pl.in.
2183 *) Add functionality to check the public key of a certificate request
2184 against a given private. This is useful to check that a certificate
2185 request can be signed by that key (self-signing).
2188 *) Make it possible to have multiple active certificates with the same
2189 subject in the CA index file. This is done only if the keyword
2190 'unique_subject' is set to 'no' in the main CA section (default
2191 if 'CA_default') of the configuration file. The value is saved
2192 with the database itself in a separate index attribute file,
2193 named like the index file with '.attr' appended to the name.
2196 *) Generate muti valued AVAs using '+' notation in config files for
2200 *) Support for nameConstraints certificate extension.
2203 *) Support for policyConstraints certificate extension.
2206 *) Support for policyMappings certificate extension.
2209 *) Make sure the default DSA_METHOD implementation only uses its
2210 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2211 and change its own handlers to be NULL so as to remove unnecessary
2212 indirection. This lets alternative implementations fallback to the
2213 default implementation more easily.
2216 *) Support for directoryName in GeneralName related extensions
2220 *) Make it possible to link applications using Makefile.shared.
2221 Make that possible even when linking against static libraries!
2224 *) Support for single pass processing for S/MIME signing. This now
2225 means that S/MIME signing can be done from a pipe, in addition
2226 cleartext signing (multipart/signed type) is effectively streaming
2227 and the signed data does not need to be all held in memory.
2229 This is done with a new flag PKCS7_STREAM. When this flag is set
2230 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2231 is done after the data is output (and digests calculated) in
2232 SMIME_write_PKCS7().
2235 *) Add full support for -rpath/-R, both in shared libraries and
2236 applications, at least on the platforms where it's known how
2240 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2241 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2242 will now compute a table of multiples of the generator that
2243 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2244 faster (notably in the case of a single point multiplication,
2245 scalar * generator).
2246 [Nils Larsch, Bodo Moeller]
2248 *) IPv6 support for certificate extensions. The various extensions
2249 which use the IP:a.b.c.d can now take IPv6 addresses using the
2250 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2254 *) Added an ENGINE that implements RSA by performing private key
2255 exponentiations with the GMP library. The conversions to and from
2256 GMP's mpz_t format aren't optimised nor are any montgomery forms
2257 cached, and on x86 it appears OpenSSL's own performance has caught up.
2258 However there are likely to be other architectures where GMP could
2259 provide a boost. This ENGINE is not built in by default, but it can be
2260 specified at Configure time and should be accompanied by the necessary
2261 linker additions, eg;
2262 ./config -DOPENSSL_USE_GMP -lgmp
2265 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2266 testing availability of engines with "-t" - the old behaviour is
2267 produced by increasing the feature's verbosity with "-tt".
2270 *) ECDSA routines: under certain error conditions uninitialized BN objects
2271 could be freed. Solution: make sure initialization is performed early
2272 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2276 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2277 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2278 software implementations. For DSA and DH, parameter generation can
2279 also be overriden by providing the appropriate method callbacks.
2282 *) Change the "progress" mechanism used in key-generation and
2283 primality testing to functions that take a new BN_GENCB pointer in
2284 place of callback/argument pairs. The new API functions have "_ex"
2285 postfixes and the older functions are reimplemented as wrappers for
2286 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2287 declarations of the old functions to help (graceful) attempts to
2288 migrate to the new functions. Also, the new key-generation API
2289 functions operate on a caller-supplied key-structure and return
2290 success/failure rather than returning a key or NULL - this is to
2291 help make "keygen" another member function of RSA_METHOD etc.
2293 Example for using the new callback interface:
2295 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2299 BN_GENCB_set(&my_cb, my_callback, my_arg);
2301 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2302 /* For the meaning of a, b in calls to my_callback(), see the
2303 * documentation of the function that calls the callback.
2304 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2305 * my_callback should return 1 if it wants BN_is_prime_ex()
2306 * to continue, or 0 to stop.
2311 *) Change the ZLIB compression method to be stateful, and make it
2312 available to TLS with the number defined in
2313 draft-ietf-tls-compression-04.txt.
2316 *) Add the ASN.1 structures and functions for CertificatePair, which
2317 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2319 CertificatePair ::= SEQUENCE {
2320 forward [0] Certificate OPTIONAL,
2321 reverse [1] Certificate OPTIONAL,
2322 -- at least one of the pair shall be present -- }
2324 Also implement the PEM functions to read and write certificate
2325 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2327 This needed to be defined, mostly for the sake of the LDAP
2328 attribute crossCertificatePair, but may prove useful elsewhere as
2332 *) Make it possible to inhibit symlinking of shared libraries in
2333 Makefile.shared, for Cygwin's sake.
2336 *) Extend the BIGNUM API by creating a function
2337 void BN_set_negative(BIGNUM *a, int neg);
2338 and a macro that behave like
2339 int BN_is_negative(const BIGNUM *a);
2341 to avoid the need to access 'a->neg' directly in applications.
2344 *) Implement fast modular reduction for pseudo-Mersenne primes
2345 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2346 EC_GROUP_new_curve_GFp() will now automatically use this
2348 [Nils Larsch <nla@trustcenter.de>]
2350 *) Add new lock type (CRYPTO_LOCK_BN).
2353 *) Change the ENGINE framework to automatically load engines
2354 dynamically from specific directories unless they could be
2355 found to already be built in or loaded. Move all the
2356 current engines except for the cryptodev one to a new
2358 The engines in engines/ are built as shared libraries if
2359 the "shared" options was given to ./Configure or ./config.
2360 Otherwise, they are inserted in libcrypto.a.
2361 /usr/local/ssl/engines is the default directory for dynamic
2362 engines, but that can be overriden at configure time through
2363 the usual use of --prefix and/or --openssldir, and at run
2364 time with the environment variable OPENSSL_ENGINES.
2365 [Geoff Thorpe and Richard Levitte]
2367 *) Add Makefile.shared, a helper makefile to build shared
2368 libraries. Addapt Makefile.org.
2371 *) Add version info to Win32 DLLs.
2372 [Peter 'Luna' Runestig" <peter@runestig.com>]
2374 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2375 can be added using this API to created arbitrary PKCS#12
2376 files while avoiding the low level API.
2378 New options to PKCS12_create(), key or cert can be NULL and
2379 will then be omitted from the output file. The encryption
2380 algorithm NIDs can be set to -1 for no encryption, the mac
2381 iteration count can be set to 0 to omit the mac.
2383 Enhance pkcs12 utility by making the -nokeys and -nocerts
2384 options work when creating a PKCS#12 file. New option -nomac
2385 to omit the mac, NONE can be set for an encryption algorithm.
2386 New code is modified to use the enhanced PKCS12_create()
2387 instead of the low level API.
2390 *) Extend ASN1 encoder to support indefinite length constructed
2391 encoding. This can output sequences tags and octet strings in
2392 this form. Modify pk7_asn1.c to support indefinite length
2393 encoding. This is experimental and needs additional code to
2394 be useful, such as an ASN1 bio and some enhanced streaming
2397 Extend template encode functionality so that tagging is passed
2398 down to the template encoder.
2401 *) Let 'openssl req' fail if an argument to '-newkey' is not
2402 recognized instead of using RSA as a default.
2405 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2406 As these are not official, they are not included in "ALL";
2407 the "ECCdraft" ciphersuite group alias can be used to select them.
2408 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2410 *) Add ECDH engine support.
2411 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2413 *) Add ECDH in new directory crypto/ecdh/.
2414 [Douglas Stebila (Sun Microsystems Laboratories)]
2416 *) Let BN_rand_range() abort with an error after 100 iterations
2417 without success (which indicates a broken PRNG).
2420 *) Change BN_mod_sqrt() so that it verifies that the input value
2421 is really the square of the return value. (Previously,
2422 BN_mod_sqrt would show GIGO behaviour.)
2425 *) Add named elliptic curves over binary fields from X9.62, SECG,
2426 and WAP/WTLS; add OIDs that were still missing.
2428 [Sheueling Chang Shantz and Douglas Stebila
2429 (Sun Microsystems Laboratories)]
2431 *) Extend the EC library for elliptic curves over binary fields
2432 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2435 EC_GF2m_simple_method
2439 EC_GROUP_new_curve_GF2m
2440 EC_GROUP_set_curve_GF2m
2441 EC_GROUP_get_curve_GF2m
2442 EC_POINT_set_affine_coordinates_GF2m
2443 EC_POINT_get_affine_coordinates_GF2m
2444 EC_POINT_set_compressed_coordinates_GF2m
2446 Point compression for binary fields is disabled by default for
2447 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2450 As binary polynomials are represented as BIGNUMs, various members
2451 of the EC_GROUP and EC_POINT data structures can be shared
2452 between the implementations for prime fields and binary fields;
2453 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2454 are essentially identical to their ..._GFp counterparts.
2455 (For simplicity, the '..._GFp' prefix has been dropped from
2456 various internal method names.)
2458 An internal 'field_div' method (similar to 'field_mul' and
2459 'field_sqr') has been added; this is used only for binary fields.
2461 [Sheueling Chang Shantz and Douglas Stebila
2462 (Sun Microsystems Laboratories)]
2464 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2465 through methods ('mul', 'precompute_mult').
2467 The generic implementations (now internally called 'ec_wNAF_mul'
2468 and 'ec_wNAF_precomputed_mult') remain the default if these
2469 methods are undefined.
2471 [Sheueling Chang Shantz and Douglas Stebila
2472 (Sun Microsystems Laboratories)]
2474 *) New function EC_GROUP_get_degree, which is defined through
2475 EC_METHOD. For curves over prime fields, this returns the bit
2476 length of the modulus.
2478 [Sheueling Chang Shantz and Douglas Stebila
2479 (Sun Microsystems Laboratories)]
2481 *) New functions EC_GROUP_dup, EC_POINT_dup.
2482 (These simply call ..._new and ..._copy).
2484 [Sheueling Chang Shantz and Douglas Stebila
2485 (Sun Microsystems Laboratories)]
2487 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2488 Polynomials are represented as BIGNUMs (where the sign bit is not
2489 used) in the following functions [macros]:
2492 BN_GF2m_sub [= BN_GF2m_add]
2493 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2494 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2495 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2497 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2498 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2499 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2500 BN_GF2m_cmp [= BN_ucmp]
2502 (Note that only the 'mod' functions are actually for fields GF(2^m).
2503 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2505 For some functions, an the irreducible polynomial defining a
2506 field can be given as an 'unsigned int[]' with strictly
2507 decreasing elements giving the indices of those bits that are set;
2508 i.e., p[] represents the polynomial
2509 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2511 p[0] > p[1] > ... > p[k] = 0.
2512 This applies to the following functions:
2517 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2518 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2520 BN_GF2m_mod_sqrt_arr
2521 BN_GF2m_mod_solve_quad_arr
2525 Conversion can be performed by the following functions:
2530 bntest.c has additional tests for binary polynomial arithmetic.
2532 Two implementations for BN_GF2m_mod_div() are available.
2533 The default algorithm simply uses BN_GF2m_mod_inv() and
2534 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2535 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2536 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2538 [Sheueling Chang Shantz and Douglas Stebila
2539 (Sun Microsystems Laboratories)]
2541 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2542 functionality is disabled at compile-time.
2543 [Douglas Stebila <douglas.stebila@sun.com>]
2545 *) Change default behaviour of 'openssl asn1parse' so that more
2546 information is visible when viewing, e.g., a certificate:
2548 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2549 mode the content of non-printable OCTET STRINGs is output in a
2550 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2551 avoid the appearance of a printable string.
2552 [Nils Larsch <nla@trustcenter.de>]
2554 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2556 EC_GROUP_set_asn1_flag()
2557 EC_GROUP_get_asn1_flag()
2558 EC_GROUP_set_point_conversion_form()
2559 EC_GROUP_get_point_conversion_form()
2560 These control ASN1 encoding details:
2561 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2562 has been set to OPENSSL_EC_NAMED_CURVE.
2563 - Points are encoded in uncompressed form by default; options for
2564 asn1_for are as for point2oct, namely
2565 POINT_CONVERSION_COMPRESSED
2566 POINT_CONVERSION_UNCOMPRESSED
2567 POINT_CONVERSION_HYBRID
2569 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2572 EC_GROUP_get0_seed()
2573 EC_GROUP_get_seed_len()
2574 This is used only for ASN1 purposes (so far).
2575 [Nils Larsch <nla@trustcenter.de>]
2577 *) Add 'field_type' member to EC_METHOD, which holds the NID
2578 of the appropriate field type OID. The new function
2579 EC_METHOD_get_field_type() returns this value.
2580 [Nils Larsch <nla@trustcenter.de>]
2585 EC_POINT_point2hex()
2586 EC_POINT_hex2point()
2587 providing useful interfaces to EC_POINT_point2oct() and
2588 EC_POINT_oct2point().
2589 [Nils Larsch <nla@trustcenter.de>]
2591 *) Change internals of the EC library so that the functions
2592 EC_GROUP_set_generator()
2593 EC_GROUP_get_generator()
2594 EC_GROUP_get_order()
2595 EC_GROUP_get_cofactor()
2596 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2597 to methods, which would lead to unnecessary code duplication when
2598 adding different types of curves.
2599 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2601 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2602 arithmetic, and such that modified wNAFs are generated
2603 (which avoid length expansion in many cases).
2606 *) Add a function EC_GROUP_check_discriminant() (defined via
2607 EC_METHOD) that verifies that the curve discriminant is non-zero.
2609 Add a function EC_GROUP_check() that makes some sanity tests
2610 on a EC_GROUP, its generator and order. This includes
2611 EC_GROUP_check_discriminant().
2612 [Nils Larsch <nla@trustcenter.de>]
2614 *) Add ECDSA in new directory crypto/ecdsa/.
2616 Add applications 'openssl ecparam' and 'openssl ecdsa'
2617 (these are based on 'openssl dsaparam' and 'openssl dsa').
2619 ECDSA support is also included in various other files across the
2620 library. Most notably,
2621 - 'openssl req' now has a '-newkey ecdsa:file' option;
2622 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2623 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2624 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2625 them suitable for ECDSA where domain parameters must be
2626 extracted before the specific public key;
2627 - ECDSA engine support has been added.
2628 [Nils Larsch <nla@trustcenter.de>]
2630 *) Include some named elliptic curves, and add OIDs from X9.62,
2631 SECG, and WAP/WTLS. Each curve can be obtained from the new
2633 EC_GROUP_new_by_curve_name(),
2634 and the list of available named curves can be obtained with
2635 EC_get_builtin_curves().
2636 Also add a 'curve_name' member to EC_GROUP objects, which can be
2638 EC_GROUP_set_curve_name()
2639 EC_GROUP_get_curve_name()
2640 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2642 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2643 was actually never needed) and in BN_mul(). The removal in BN_mul()
2644 required a small change in bn_mul_part_recursive() and the addition
2645 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2646 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2647 bn_sub_words() and bn_add_words() except they take arrays with
2651 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2653 *) Cleanse PEM buffers before freeing them since they may contain
2655 [Benjamin Bennett <ben@psc.edu>]
2657 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2658 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2659 authentication-only ciphersuites.
2662 *) Since AES128 and AES256 share a single mask bit in the logic of
2663 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2664 kludge to work properly if AES128 is available and AES256 isn't.
2667 *) Expand security boundary to match 1.1.1 module.
2670 *) Remove redundant features: hash file source, editing of test vectors
2671 modify fipsld to use external fips_premain.c signature.
2674 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2675 run algorithm test programs.
2678 *) Make algorithm test programs more tolerant of whitespace.
2681 *) Have SSL/TLS server implementation tolerate "mismatched" record
2682 protocol version while receiving ClientHello even if the
2683 ClientHello is fragmented. (The server can't insist on the
2684 particular protocol version it has chosen before the ServerHello
2685 message has informed the client about his choice.)
2688 *) Load error codes if they are not already present instead of using a
2689 static variable. This allows them to be cleanly unloaded and reloaded.
2692 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2694 *) Introduce limits to prevent malicious keys being able to
2695 cause a denial of service. (CVE-2006-2940)
2696 [Steve Henson, Bodo Moeller]
2698 *) Fix ASN.1 parsing of certain invalid structures that can result
2699 in a denial of service. (CVE-2006-2937) [Steve Henson]
2701 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2702 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2704 *) Fix SSL client code which could crash if connecting to a
2705 malicious SSLv2 server. (CVE-2006-4343)
2706 [Tavis Ormandy and Will Drewry, Google Security Team]
2708 *) Change ciphersuite string processing so that an explicit
2709 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2710 will no longer include "AES128-SHA"), and any other similar
2711 ciphersuite (same bitmap) from *other* protocol versions (so that
2712 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2713 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2714 changes from 0.9.8b and 0.9.8d.
2717 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2719 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2720 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2722 *) Change the Unix randomness entropy gathering to use poll() when
2723 possible instead of select(), since the latter has some
2724 undesirable limitations.
2725 [Darryl Miles via Richard Levitte and Bodo Moeller]
2727 *) Disable rogue ciphersuites:
2729 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2730 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2731 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2733 The latter two were purportedly from
2734 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2737 Also deactive the remaining ciphersuites from
2738 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2739 unofficial, and the ID has long expired.
2742 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2743 dual-core machines) and other potential thread-safety issues.
2746 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2748 *) Adapt fipsld and the build system to link against the validated FIPS
2749 module in FIPS mode.
2752 *) Fixes for VC++ 2005 build under Windows.
2755 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2756 from a Windows bash shell such as MSYS. It is autodetected from the
2757 "config" script when run from a VC++ environment. Modify standard VC++
2758 build to use fipscanister.o from the GNU make build.
2761 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2763 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2764 The value now differs depending on if you build for FIPS or not.
2765 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2766 safely run with a non-FIPSed libcrypto, as it may crash because of
2767 the difference induced by this change.
2770 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2772 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2773 (part of SSL_OP_ALL). This option used to disable the
2774 countermeasure against man-in-the-middle protocol-version
2775 rollback in the SSL 2.0 server implementation, which is a bad
2776 idea. (CVE-2005-2969)
2778 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2779 for Information Security, National Institute of Advanced Industrial
2780 Science and Technology [AIST], Japan)]
2782 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2783 mainly for FIPS compliance and not fully integrated at this stage.
2786 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2787 the exponentiation using a fixed-length exponent. (Otherwise,
2788 the information leaked through timing could expose the secret key
2789 after many signatures; cf. Bleichenbacher's attack on DSA with
2793 *) Make a new fixed-window mod_exp implementation the default for
2794 RSA, DSA, and DH private-key operations so that the sequence of
2795 squares and multiplies and the memory access pattern are
2796 independent of the particular secret key. This will mitigate
2797 cache-timing and potential related attacks.
2799 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2800 and this is automatically used by BN_mod_exp_mont() if the new flag
2801 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2802 will use this BN flag for private exponents unless the flag
2803 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2804 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2806 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2808 *) Change the client implementation for SSLv23_method() and
2809 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2810 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2811 (Previously, the SSL 2.0 backwards compatible Client Hello
2812 message format would be used even with SSL_OP_NO_SSLv2.)
2815 *) Add support for smime-type MIME parameter in S/MIME messages which some
2819 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2820 a threadsafe manner. Modify rsa code to use new function and add calls
2821 to dsa and dh code (which had race conditions before).
2824 *) Include the fixed error library code in the C error file definitions
2825 instead of fixing them up at runtime. This keeps the error code
2826 structures constant.
2829 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2831 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2834 *) Fixes for newer kerberos headers. NB: the casts are needed because
2835 the 'length' field is signed on one version and unsigned on another
2836 with no (?) obvious way to tell the difference, without these VC++
2837 complains. Also the "definition" of FAR (blank) is no longer included
2838 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2839 some needed definitions.
2842 *) Undo Cygwin change.
2845 *) Added support for proxy certificates according to RFC 3820.
2846 Because they may be a security thread to unaware applications,
2847 they must be explicitely allowed in run-time. See
2848 docs/HOWTO/proxy_certificates.txt for further information.
2851 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2853 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2854 server and client random values. Previously
2855 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2856 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2858 This change has negligible security impact because:
2860 1. Server and client random values still have 24 bytes of pseudo random
2863 2. Server and client random values are sent in the clear in the initial
2866 3. The master secret is derived using the premaster secret (48 bytes in
2867 size for static RSA ciphersuites) as well as client server and random
2870 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2873 [Stephen Henson, reported by UK NISCC]
2875 *) Use Windows randomness collection on Cygwin.
2878 *) Fix hang in EGD/PRNGD query when communication socket is closed
2879 prematurely by EGD/PRNGD.
2880 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2882 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2885 *) Back-port of selected performance improvements from development
2886 branch, as well as improved support for PowerPC platforms.
2889 *) Add lots of checks for memory allocation failure, error codes to indicate
2890 failure and freeing up memory if a failure occurs.
2891 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2893 *) Add new -passin argument to dgst.
2896 *) Perform some character comparisons of different types in X509_NAME_cmp:
2897 this is needed for some certificates that reencode DNs into UTF8Strings
2898 (in violation of RFC3280) and can't or wont issue name rollover
2902 *) Make an explicit check during certificate validation to see that
2903 the CA setting in each certificate on the chain is correct. As a
2904 side effect always do the following basic checks on extensions,
2905 not just when there's an associated purpose to the check:
2907 - if there is an unhandled critical extension (unless the user
2908 has chosen to ignore this fault)
2909 - if the path length has been exceeded (if one is set at all)
2910 - that certain extensions fit the associated purpose (if one has
2914 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2916 *) Avoid a race condition when CRLs are checked in a multi threaded
2917 environment. This would happen due to the reordering of the revoked
2918 entries during signature checking and serial number lookup. Now the
2919 encoding is cached and the serial number sort performed under a lock.
2920 Add new STACK function sk_is_sorted().
2923 *) Add Delta CRL to the extension code.
2926 *) Various fixes to s3_pkt.c so alerts are sent properly.
2927 [David Holmes <d.holmes@f5.com>]
2929 *) Reduce the chances of duplicate issuer name and serial numbers (in
2930 violation of RFC3280) using the OpenSSL certificate creation utilities.
2931 This is done by creating a random 64 bit value for the initial serial
2932 number when a serial number file is created or when a self signed
2933 certificate is created using 'openssl req -x509'. The initial serial
2934 number file is created using 'openssl x509 -next_serial' in CA.pl
2935 rather than being initialized to 1.
2938 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
2940 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2941 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
2942 [Joe Orton, Steve Henson]
2944 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
2946 [Joe Orton, Steve Henson]
2948 *) Make it possible to have multiple active certificates with the same
2949 subject in the CA index file. This is done only if the keyword
2950 'unique_subject' is set to 'no' in the main CA section (default
2951 if 'CA_default') of the configuration file. The value is saved
2952 with the database itself in a separate index attribute file,
2953 named like the index file with '.attr' appended to the name.
2956 *) X509 verify fixes. Disable broken certificate workarounds when
2957 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
2958 keyUsage extension present. Don't accept CRLs with unhandled critical
2959 extensions: since verify currently doesn't process CRL extensions this
2960 rejects a CRL with *any* critical extensions. Add new verify error codes
2964 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
2965 A clarification of RFC2560 will require the use of OCTET STRINGs and
2966 some implementations cannot handle the current raw format. Since OpenSSL
2967 copies and compares OCSP nonces as opaque blobs without any attempt at
2968 parsing them this should not create any compatibility issues.
2971 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
2972 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
2973 this HMAC (and other) operations are several times slower than OpenSSL
2977 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
2978 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2980 *) Use the correct content when signing type "other".
2983 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
2985 *) Fix various bugs revealed by running the NISCC test suite:
2987 Stop out of bounds reads in the ASN1 code when presented with
2988 invalid tags (CVE-2003-0543 and CVE-2003-0544).
2990 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
2992 If verify callback ignores invalid public key errors don't try to check
2993 certificate signature with the NULL public key.
2997 *) New -ignore_err option in ocsp application to stop the server
2998 exiting on the first error in a request.
3001 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3002 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3006 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3007 extra data after the compression methods not only for TLS 1.0
3008 but also for SSL 3.0 (as required by the specification).
3009 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3011 *) Change X509_certificate_type() to mark the key as exported/exportable
3012 when it's 512 *bits* long, not 512 bytes.
3015 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3016 blocks during encryption.
3019 *) Various fixes to base64 BIO and non blocking I/O. On write
3020 flushes were not handled properly if the BIO retried. On read
3021 data was not being buffered properly and had various logic bugs.
3022 This also affects blocking I/O when the data being decoded is a
3026 *) Various S/MIME bugfixes and compatibility changes:
3027 output correct application/pkcs7 MIME type if
3028 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3029 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3030 of files as .eml work). Correctly handle very long lines in MIME
3034 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3036 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3037 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3038 a protocol version number mismatch like a decryption error
3039 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3042 *) Turn on RSA blinding by default in the default implementation
3043 to avoid a timing attack. Applications that don't want it can call
3044 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3045 They would be ill-advised to do so in most cases.
3046 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3048 *) Change RSA blinding code so that it works when the PRNG is not
3049 seeded (in this case, the secret RSA exponent is abused as
3050 an unpredictable seed -- if it is not unpredictable, there
3051 is no point in blinding anyway). Make RSA blinding thread-safe
3052 by remembering the creator's thread ID in rsa->blinding and
3053 having all other threads use local one-time blinding factors
3054 (this requires more computation than sharing rsa->blinding, but
3055 avoids excessive locking; and if an RSA object is not shared
3056 between threads, blinding will still be very fast).
3059 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3060 ENGINE as defaults for all supported algorithms irrespective of
3061 the 'flags' parameter. 'flags' is now honoured, so applications
3062 should make sure they are passing it correctly.
3065 *) Target "mingw" now allows native Windows code to be generated in
3066 the Cygwin environment as well as with the MinGW compiler.
3069 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3071 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3072 via timing by performing a MAC computation even if incorrrect
3073 block cipher padding has been found. This is a countermeasure
3074 against active attacks where the attacker has to distinguish
3075 between bad padding and a MAC verification error. (CVE-2003-0078)
3077 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3078 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3079 Martin Vuagnoux (EPFL, Ilion)]
3081 *) Make the no-err option work as intended. The intention with no-err
3082 is not to have the whole error stack handling routines removed from
3083 libcrypto, it's only intended to remove all the function name and
3084 reason texts, thereby removing some of the footprint that may not
3085 be interesting if those errors aren't displayed anyway.
3087 NOTE: it's still possible for any application or module to have it's
3088 own set of error texts inserted. The routines are there, just not
3089 used by default when no-err is given.
3092 *) Add support for FreeBSD on IA64.
3093 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3095 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3096 Kerberos function mit_des_cbc_cksum(). Before this change,
3097 the value returned by DES_cbc_cksum() was like the one from
3098 mit_des_cbc_cksum(), except the bytes were swapped.
3099 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3101 *) Allow an application to disable the automatic SSL chain building.
3102 Before this a rather primitive chain build was always performed in
3103 ssl3_output_cert_chain(): an application had no way to send the
3104 correct chain if the automatic operation produced an incorrect result.
3106 Now the chain builder is disabled if either:
3108 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3110 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3112 The reasoning behind this is that an application would not want the
3113 auto chain building to take place if extra chain certificates are
3114 present and it might also want a means of sending no additional
3115 certificates (for example the chain has two certificates and the
3119 *) Add the possibility to build without the ENGINE framework.
3120 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3122 *) Under Win32 gmtime() can return NULL: check return value in
3123 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3126 *) DSA routines: under certain error conditions uninitialized BN objects
3127 could be freed. Solution: make sure initialization is performed early
3128 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3129 Nils Larsch <nla@trustcenter.de> via PR#459)
3132 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3133 checked on reconnect on the client side, therefore session resumption
3134 could still fail with a "ssl session id is different" error. This
3135 behaviour is masked when SSL_OP_ALL is used due to
3136 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3137 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3138 followup to PR #377.
3141 *) IA-32 assembler support enhancements: unified ELF targets, support
3142 for SCO/Caldera platforms, fix for Cygwin shared build.
3145 *) Add support for FreeBSD on sparc64. As a consequence, support for
3146 FreeBSD on non-x86 processors is separate from x86 processors on
3147 the config script, much like the NetBSD support.
3148 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3150 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3152 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3155 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3156 code (06) was taken as the first octet of the session ID and the last
3157 octet was ignored consequently. As a result SSLv2 client side session
3158 caching could not have worked due to the session ID mismatch between
3160 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3164 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3165 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3169 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3170 seems that in spite of existing for more than a year, many application
3171 author have done nothing to provide the necessary callbacks, which
3172 means that this particular engine will not work properly anywhere.
3173 This is a very unfortunate situation which forces us, in the name
3174 of usability, to give the hw_ncipher.c a static lock, which is part
3176 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3177 appear in 0.9.8 or later. We EXPECT application authors to have
3178 dealt properly with this when 0.9.8 is released (unless we actually
3179 make such changes in the libcrypto locking code that changes will
3180 have to be made anyway).
3183 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3184 octets have been read, EOF or an error occurs. Without this change
3185 some truncated ASN1 structures will not produce an error.
3188 *) Disable Heimdal support, since it hasn't been fully implemented.
3189 Still give the possibility to force the use of Heimdal, but with
3190 warnings and a request that patches get sent to openssl-dev.
3193 *) Add the VC-CE target, introduce the WINCE sysname, and add
3194 INSTALL.WCE and appropriate conditionals to make it build.
3195 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3197 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3198 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3199 edit numbers of the version.
3200 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3202 *) Introduce safe string copy and catenation functions
3203 (BUF_strlcpy() and BUF_strlcat()).
3204 [Ben Laurie (CHATS) and Richard Levitte]
3206 *) Avoid using fixed-size buffers for one-line DNs.
3207 [Ben Laurie (CHATS)]
3209 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3210 resizing buffers containing secrets, and use where appropriate.
3211 [Ben Laurie (CHATS)]
3213 *) Avoid using fixed size buffers for configuration file location.
3214 [Ben Laurie (CHATS)]
3216 *) Avoid filename truncation for various CA files.
3217 [Ben Laurie (CHATS)]
3219 *) Use sizeof in preference to magic numbers.
3220 [Ben Laurie (CHATS)]
3222 *) Avoid filename truncation in cert requests.
3223 [Ben Laurie (CHATS)]
3225 *) Add assertions to check for (supposedly impossible) buffer
3227 [Ben Laurie (CHATS)]
3229 *) Don't cache truncated DNS entries in the local cache (this could
3230 potentially lead to a spoofing attack).
3231 [Ben Laurie (CHATS)]
3233 *) Fix various buffers to be large enough for hex/decimal
3234 representations in a platform independent manner.
3235 [Ben Laurie (CHATS)]
3237 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3238 resizing buffers containing secrets, and use where appropriate.
3239 [Ben Laurie (CHATS)]
3241 *) Add BIO_indent() to avoid much slightly worrying code to do
3243 [Ben Laurie (CHATS)]
3245 *) Convert sprintf()/BIO_puts() to BIO_printf().
3246 [Ben Laurie (CHATS)]
3248 *) buffer_gets() could terminate with the buffer only half
3250 [Ben Laurie (CHATS)]
3252 *) Add assertions to prevent user-supplied crypto functions from
3253 overflowing internal buffers by having large block sizes, etc.
3254 [Ben Laurie (CHATS)]
3256 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3258 [Ben Laurie (CHATS)]
3260 *) Eliminate unused copy of key in RC4.
3261 [Ben Laurie (CHATS)]
3263 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3264 [Ben Laurie (CHATS)]
3266 *) Fix off-by-one error in EGD path.
3267 [Ben Laurie (CHATS)]
3269 *) If RANDFILE path is too long, ignore instead of truncating.
3270 [Ben Laurie (CHATS)]
3272 *) Eliminate unused and incorrectly sized X.509 structure
3274 [Ben Laurie (CHATS)]
3276 *) Eliminate unused and dangerous function knumber().
3277 [Ben Laurie (CHATS)]
3279 *) Eliminate unused and dangerous structure, KSSL_ERR.
3280 [Ben Laurie (CHATS)]
3282 *) Protect against overlong session ID context length in an encoded
3283 session object. Since these are local, this does not appear to be
3285 [Ben Laurie (CHATS)]
3287 *) Change from security patch (see 0.9.6e below) that did not affect
3288 the 0.9.6 release series:
3290 Remote buffer overflow in SSL3 protocol - an attacker could
3291 supply an oversized master key in Kerberos-enabled versions.
3293 [Ben Laurie (CHATS)]
3295 *) Change the SSL kerb5 codes to match RFC 2712.
3298 *) Make -nameopt work fully for req and add -reqopt switch.
3299 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3301 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3302 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3304 *) Make sure tests can be performed even if the corresponding algorithms
3305 have been removed entirely. This was also the last step to make
3306 OpenSSL compilable with DJGPP under all reasonable conditions.
3307 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3309 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3310 to allow version independent disabling of normally unselected ciphers,
3311 which may be activated as a side-effect of selecting a single cipher.
3313 (E.g., cipher list string "RSA" enables ciphersuites that are left
3314 out of "ALL" because they do not provide symmetric encryption.
3315 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3316 [Lutz Jaenicke, Bodo Moeller]
3318 *) Add appropriate support for separate platform-dependent build
3319 directories. The recommended way to make a platform-dependent
3320 build directory is the following (tested on Linux), maybe with
3323 # Place yourself outside of the OpenSSL source tree. In
3324 # this example, the environment variable OPENSSL_SOURCE
3325 # is assumed to contain the absolute OpenSSL source directory.
3326 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3327 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3328 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3329 mkdir -p `dirname $F`
3330 ln -s $OPENSSL_SOURCE/$F $F
3333 To be absolutely sure not to disturb the source tree, a "make clean"
3334 is a good thing. If it isn't successfull, don't worry about it,
3335 it probably means the source directory is very clean.
3338 *) Make sure any ENGINE control commands make local copies of string
3339 pointers passed to them whenever necessary. Otherwise it is possible
3340 the caller may have overwritten (or deallocated) the original string
3341 data when a later ENGINE operation tries to use the stored values.
3342 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3344 *) Improve diagnostics in file reading and command-line digests.
3345 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3347 *) Add AES modes CFB and OFB to the object database. Correct an
3348 error in AES-CFB decryption.
3351 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3352 allows existing EVP_CIPHER_CTX structures to be reused after
3353 calling EVP_*Final(). This behaviour is used by encryption
3354 BIOs and some applications. This has the side effect that
3355 applications must explicitly clean up cipher contexts with
3356 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3359 *) Check the values of dna and dnb in bn_mul_recursive before calling
3360 bn_mul_comba (a non zero value means the a or b arrays do not contain
3361 n2 elements) and fallback to bn_mul_normal if either is not zero.
3364 *) Fix escaping of non-ASCII characters when using the -subj option
3365 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3368 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3369 form for "surname", serialNumber has no short form.
3370 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3371 therefore remove "mail" short name for "internet 7".
3372 The OID for unique identifiers in X509 certificates is
3373 x500UniqueIdentifier, not uniqueIdentifier.
3374 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3377 *) Add an "init" command to the ENGINE config module and auto initialize
3378 ENGINEs. Without any "init" command the ENGINE will be initialized
3379 after all ctrl commands have been executed on it. If init=1 the
3380 ENGINE is initailized at that point (ctrls before that point are run
3381 on the uninitialized ENGINE and after on the initialized one). If
3382 init=0 then the ENGINE will not be iniatialized at all.
3385 *) Fix the 'app_verify_callback' interface so that the user-defined
3386 argument is actually passed to the callback: In the
3387 SSL_CTX_set_cert_verify_callback() prototype, the callback
3388 declaration has been changed from
3391 int (*cb)(X509_STORE_CTX *,void *);
3392 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3393 i=s->ctx->app_verify_callback(&ctx)
3394 has been changed into
3395 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3397 To update applications using SSL_CTX_set_cert_verify_callback(),
3398 a dummy argument can be added to their callback functions.
3399 [D. K. Smetters <smetters@parc.xerox.com>]
3401 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3402 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3404 *) Add and OPENSSL_LOAD_CONF define which will cause
3405 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3406 This allows older applications to transparently support certain
3407 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3408 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3409 load the config file and OPENSSL_add_all_algorithms_conf() which will
3410 always load it have also been added.
3413 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3414 Adjust NIDs and EVP layer.
3415 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3417 *) Config modules support in openssl utility.
3419 Most commands now load modules from the config file,
3420 though in a few (such as version) this isn't done
3421 because it couldn't be used for anything.
3423 In the case of ca and req the config file used is
3424 the same as the utility itself: that is the -config
3425 command line option can be used to specify an
3429 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3430 use "openssl_conf" if filename is NULL use default openssl config file.
3433 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3434 config section name. Add a new flag to tolerate a missing config file
3435 and move code to CONF_modules_load_file().
3438 *) Support for crypto accelerator cards from Accelerated Encryption
3439 Processing, www.aep.ie. (Use engine 'aep')
3440 The support was copied from 0.9.6c [engine] and adapted/corrected
3441 to work with the new engine framework.
3442 [AEP Inc. and Richard Levitte]
3444 *) Support for SureWare crypto accelerator cards from Baltimore
3445 Technologies. (Use engine 'sureware')
3446 The support was copied from 0.9.6c [engine] and adapted
3447 to work with the new engine framework.
3450 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3451 make the newer ENGINE framework commands for the CHIL engine work.
3452 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3454 *) Make it possible to produce shared libraries on ReliantUNIX.
3455 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3457 *) Add the configuration target debug-linux-ppro.
3458 Make 'openssl rsa' use the general key loading routines
3459 implemented in apps.c, and make those routines able to
3460 handle the key format FORMAT_NETSCAPE and the variant
3462 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3464 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3465 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3467 *) Add -keyform to rsautl, and document -engine.
3468 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3470 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3471 BIO_R_NO_SUCH_FILE error code rather than the generic
3472 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3475 *) Add new functions
3477 ERR_peek_last_error_line
3478 ERR_peek_last_error_line_data.
3479 These are similar to
3482 ERR_peek_error_line_data,
3483 but report on the latest error recorded rather than the first one
3484 still in the error queue.
3485 [Ben Laurie, Bodo Moeller]
3487 *) default_algorithms option in ENGINE config module. This allows things
3489 default_algorithms = ALL
3490 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3493 *) Prelminary ENGINE config module.
3496 *) New experimental application configuration code.
3499 *) Change the AES code to follow the same name structure as all other
3500 symmetric ciphers, and behave the same way. Move everything to
3501 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3502 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3504 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3505 [Ben Laurie and Theo de Raadt]
3507 *) Add option to output public keys in req command.
3508 [Massimiliano Pala madwolf@openca.org]
3510 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3511 (up to about 10% better than before for P-192 and P-224).
3514 *) New functions/macros
3516 SSL_CTX_set_msg_callback(ctx, cb)
3517 SSL_CTX_set_msg_callback_arg(ctx, arg)
3518 SSL_set_msg_callback(ssl, cb)
3519 SSL_set_msg_callback_arg(ssl, arg)
3521 to request calling a callback function
3523 void cb(int write_p, int version, int content_type,
3524 const void *buf, size_t len, SSL *ssl, void *arg)
3526 whenever a protocol message has been completely received
3527 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3528 protocol version according to which the SSL library interprets
3529 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3530 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3531 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3532 specification (change_cipher_spec(20), alert(21), handshake(22)).
3533 'buf' and 'len' point to the actual message, 'ssl' to the
3534 SSL object, and 'arg' is the application-defined value set by
3535 SSL[_CTX]_set_msg_callback_arg().
3537 'openssl s_client' and 'openssl s_server' have new '-msg' options
3538 to enable a callback that displays all protocol messages.
3541 *) Change the shared library support so shared libraries are built as
3542 soon as the corresponding static library is finished, and thereby get
3543 openssl and the test programs linked against the shared library.
3544 This still only happens when the keyword "shard" has been given to
3545 the configuration scripts.
3547 NOTE: shared library support is still an experimental thing, and
3548 backward binary compatibility is still not guaranteed.
3549 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3551 *) Add support for Subject Information Access extension.
3552 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3554 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3555 additional bytes when new memory had to be allocated, not just
3556 when reusing an existing buffer.
3559 *) New command line and configuration option 'utf8' for the req command.
3560 This allows field values to be specified as UTF8 strings.
3563 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3564 runs for the former and machine-readable output for the latter.
3567 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3568 of the e-mail address in the DN (i.e., it will go into a certificate
3569 extension only). The new configuration file option 'email_in_dn = no'
3570 has the same effect.
3571 [Massimiliano Pala madwolf@openca.org]
3573 *) Change all functions with names starting with des_ to be starting
3574 with DES_ instead. Add wrappers that are compatible with libdes,
3575 but are named _ossl_old_des_*. Finally, add macros that map the
3576 des_* symbols to the corresponding _ossl_old_des_* if libdes
3577 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3578 desired, the des_* symbols will be mapped to DES_*, with one
3581 Since we provide two compatibility mappings, the user needs to
3582 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3583 compatibility is desired. The default (i.e., when that macro
3584 isn't defined) is OpenSSL 0.9.6c compatibility.
3586 There are also macros that enable and disable the support of old
3587 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3588 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3589 are defined, the default will apply: to support the old des routines.
3591 In either case, one must include openssl/des.h to get the correct
3592 definitions. Do not try to just include openssl/des_old.h, that
3595 NOTE: This is a major break of an old API into a new one. Software
3596 authors are encouraged to switch to the DES_ style functions. Some
3597 time in the future, des_old.h and the libdes compatibility functions
3598 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3599 default), and then completely removed.
3602 *) Test for certificates which contain unsupported critical extensions.
3603 If such a certificate is found during a verify operation it is
3604 rejected by default: this behaviour can be overridden by either
3605 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3606 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3607 X509_supported_extension() has also been added which returns 1 if a
3608 particular extension is supported.
3611 *) Modify the behaviour of EVP cipher functions in similar way to digests
3612 to retain compatibility with existing code.
3615 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3616 compatibility with existing code. In particular the 'ctx' parameter does
3617 not have to be to be initialized before the call to EVP_DigestInit() and
3618 it is tidied up after a call to EVP_DigestFinal(). New function
3619 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3620 EVP_MD_CTX_copy() changed to not require the destination to be
3621 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3622 requires the destination to be valid.
3624 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
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