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 support for TLS key exporter as described in RFC5705.
100 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
102 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
103 a few changes are required:
105 Add SSL_OP_NO_TLSv1_1 flag.
107 Update version checking logic to handle version 1.1.
108 Add explicit IV handling (ported from DTLS code).
109 Add command line options to s_client/s_server.
112 Changes between 1.0.0 and 1.0.0a [xx XXX xxxx]
114 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
116 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
118 Changes between 0.9.8n and 1.0.0 [xx XXX xxxx]
120 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
121 context. The operation can be customised via the ctrl mechanism in
122 case ENGINEs want to include additional functionality.
125 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
128 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
129 output hashes compatible with older versions of OpenSSL.
130 [Willy Weisz <weisz@vcpc.univie.ac.at>]
132 *) Fix compression algorithm handling: if resuming a session use the
133 compression algorithm of the resumed session instead of determining
134 it from client hello again. Don't allow server to change algorithm.
137 *) Add load_crls() function to apps tidying load_certs() too. Add option
138 to verify utility to allow additional CRLs to be included.
141 *) Update OCSP request code to permit adding custom headers to the request:
142 some responders need this.
145 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
147 [Julia Lawall <julia@diku.dk>]
149 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
150 needlessly dereferenced structures, used obsolete functions and
151 didn't handle all updated verify codes correctly.
154 *) Disable MD2 in the default configuration.
157 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
158 indicate the initial BIO being pushed or popped. This makes it possible
159 to determine whether the BIO is the one explicitly called or as a result
160 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
161 it handles reference counts correctly and doesn't zero out the I/O bio
162 when it is not being explicitly popped. WARNING: applications which
163 included workarounds for the old buggy behaviour will need to be modified
164 or they could free up already freed BIOs.
167 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
168 renaming to all platforms (within the 0.9.8 branch, this was
169 done conditionally on Netware platforms to avoid a name clash).
170 [Guenter <lists@gknw.net>]
172 *) Add ECDHE and PSK support to DTLS.
173 [Michael Tuexen <tuexen@fh-muenster.de>]
175 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
179 *) Add "missing" function EVP_MD_flags() (without this the only way to
180 retrieve a digest flags is by accessing the structure directly. Update
181 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
182 or cipher is registered as in the "from" argument. Print out all
183 registered digests in the dgst usage message instead of manually
184 attempting to work them out.
187 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
188 this allows the use of compression and extensions. Change default cipher
189 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
190 by default unless an application cipher string requests it.
193 *) Alter match criteria in PKCS12_parse(). It used to try to use local
194 key ids to find matching certificates and keys but some PKCS#12 files
195 don't follow the (somewhat unwritten) rules and this strategy fails.
196 Now just gather all certificates together and the first private key
197 then look for the first certificate that matches the key.
200 *) Support use of registered digest and cipher names for dgst and cipher
201 commands instead of having to add each one as a special case. So now
208 openssl dgst -sha256 foo
210 and this works for ENGINE based algorithms too.
214 *) Update Gost ENGINE to support parameter files.
215 [Victor B. Wagner <vitus@cryptocom.ru>]
217 *) Support GeneralizedTime in ca utility.
218 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
220 *) Enhance the hash format used for certificate directory links. The new
221 form uses the canonical encoding (meaning equivalent names will work
222 even if they aren't identical) and uses SHA1 instead of MD5. This form
223 is incompatible with the older format and as a result c_rehash should
224 be used to rebuild symbolic links.
227 *) Make PKCS#8 the default write format for private keys, replacing the
228 traditional format. This form is standardised, more secure and doesn't
229 include an implicit MD5 dependency.
232 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
233 committed to OpenSSL should pass this lot as a minimum.
236 *) Add session ticket override functionality for use by EAP-FAST.
237 [Jouni Malinen <j@w1.fi>]
239 *) Modify HMAC functions to return a value. Since these can be implemented
240 in an ENGINE errors can occur.
243 *) Type-checked OBJ_bsearch_ex.
246 *) Type-checked OBJ_bsearch. Also some constification necessitated
247 by type-checking. Still to come: TXT_DB, bsearch(?),
248 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
252 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
253 seconds to a tm structure directly, instead of going through OS
254 specific date routines. This avoids any issues with OS routines such
255 as the year 2038 bug. New *_adj() functions for ASN1 time structures
256 and X509_time_adj_ex() to cover the extended range. The existing
257 X509_time_adj() is still usable and will no longer have any date issues.
260 *) Delta CRL support. New use deltas option which will attempt to locate
261 and search any appropriate delta CRLs available.
263 This work was sponsored by Google.
266 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
267 code and add additional score elements. Validate alternate CRL paths
268 as part of the CRL checking and indicate a new error "CRL path validation
269 error" in this case. Applications wanting additional details can use
270 the verify callback and check the new "parent" field. If this is not
271 NULL CRL path validation is taking place. Existing applications wont
272 see this because it requires extended CRL support which is off by
275 This work was sponsored by Google.
278 *) Support for freshest CRL extension.
280 This work was sponsored by Google.
283 *) Initial indirect CRL support. Currently only supported in the CRLs
284 passed directly and not via lookup. Process certificate issuer
285 CRL entry extension and lookup CRL entries by bother issuer name
286 and serial number. Check and process CRL issuer entry in IDP extension.
288 This work was sponsored by Google.
291 *) Add support for distinct certificate and CRL paths. The CRL issuer
292 certificate is validated separately in this case. Only enabled if
293 an extended CRL support flag is set: this flag will enable additional
294 CRL functionality in future.
296 This work was sponsored by Google.
299 *) Add support for policy mappings extension.
301 This work was sponsored by Google.
304 *) Fixes to pathlength constraint, self issued certificate handling,
305 policy processing to align with RFC3280 and PKITS tests.
307 This work was sponsored by Google.
310 *) Support for name constraints certificate extension. DN, email, DNS
311 and URI types are currently supported.
313 This work was sponsored by Google.
316 *) To cater for systems that provide a pointer-based thread ID rather
317 than numeric, deprecate the current numeric thread ID mechanism and
318 replace it with a structure and associated callback type. This
319 mechanism allows a numeric "hash" to be extracted from a thread ID in
320 either case, and on platforms where pointers are larger than 'long',
321 mixing is done to help ensure the numeric 'hash' is usable even if it
322 can't be guaranteed unique. The default mechanism is to use "&errno"
323 as a pointer-based thread ID to distinguish between threads.
325 Applications that want to provide their own thread IDs should now use
326 CRYPTO_THREADID_set_callback() to register a callback that will call
327 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
329 Note that ERR_remove_state() is now deprecated, because it is tied
330 to the assumption that thread IDs are numeric. ERR_remove_state(0)
331 to free the current thread's error state should be replaced by
332 ERR_remove_thread_state(NULL).
334 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
335 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
336 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
337 application was previously providing a numeric thread callback that
338 was inappropriate for distinguishing threads, then uniqueness might
339 have been obtained with &errno that happened immediately in the
340 intermediate development versions of OpenSSL; this is no longer the
341 case, the numeric thread callback will now override the automatic use
343 [Geoff Thorpe, with help from Bodo Moeller]
345 *) Initial support for different CRL issuing certificates. This covers a
346 simple case where the self issued certificates in the chain exist and
347 the real CRL issuer is higher in the existing chain.
349 This work was sponsored by Google.
352 *) Removed effectively defunct crypto/store from the build.
355 *) Revamp of STACK to provide stronger type-checking. Still to come:
356 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
357 ASN1_STRING, CONF_VALUE.
360 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
361 RAM on SSL connections. This option can save about 34k per idle SSL.
364 *) Revamp of LHASH to provide stronger type-checking. Still to come:
365 STACK, TXT_DB, bsearch, qsort.
368 *) Initial support for Cryptographic Message Syntax (aka CMS) based
369 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
370 support for data, signedData, compressedData, digestedData and
371 encryptedData, envelopedData types included. Scripts to check against
372 RFC4134 examples draft and interop and consistency checks of many
373 content types and variants.
376 *) Add options to enc utility to support use of zlib compression BIO.
379 *) Extend mk1mf to support importing of options and assembly language
380 files from Configure script, currently only included in VC-WIN32.
381 The assembly language rules can now optionally generate the source
382 files from the associated perl scripts.
385 *) Implement remaining functionality needed to support GOST ciphersuites.
386 Interop testing has been performed using CryptoPro implementations.
387 [Victor B. Wagner <vitus@cryptocom.ru>]
389 *) s390x assembler pack.
392 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
396 *) Implement Opaque PRF Input TLS extension as specified in
397 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
398 official specification yet and no extension type assignment by
399 IANA exists, this extension (for now) will have to be explicitly
400 enabled when building OpenSSL by providing the extension number
401 to use. For example, specify an option
403 -DTLSEXT_TYPE_opaque_prf_input=0x9527
405 to the "config" or "Configure" script to enable the extension,
406 assuming extension number 0x9527 (which is a completely arbitrary
407 and unofficial assignment based on the MD5 hash of the Internet
408 Draft). Note that by doing so, you potentially lose
409 interoperability with other TLS implementations since these might
410 be using the same extension number for other purposes.
412 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
413 opaque PRF input value to use in the handshake. This will create
414 an interal copy of the length-'len' string at 'src', and will
415 return non-zero for success.
417 To get more control and flexibility, provide a callback function
420 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
421 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
425 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
428 Callback function 'cb' will be called in handshakes, and is
429 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
430 Argument 'arg' is for application purposes (the value as given to
431 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
432 be provided to the callback function). The callback function
433 has to return non-zero to report success: usually 1 to use opaque
434 PRF input just if possible, or 2 to enforce use of the opaque PRF
435 input. In the latter case, the library will abort the handshake
436 if opaque PRF input is not successfully negotiated.
438 Arguments 'peerinput' and 'len' given to the callback function
439 will always be NULL and 0 in the case of a client. A server will
440 see the client's opaque PRF input through these variables if
441 available (NULL and 0 otherwise). Note that if the server
442 provides an opaque PRF input, the length must be the same as the
443 length of the client's opaque PRF input.
445 Note that the callback function will only be called when creating
446 a new session (session resumption can resume whatever was
447 previously negotiated), and will not be called in SSL 2.0
448 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
449 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
450 for applications that need to enforce opaque PRF input.
454 *) Update ssl code to support digests other than SHA1+MD5 for handshake
457 [Victor B. Wagner <vitus@cryptocom.ru>]
459 *) Add RFC4507 support to OpenSSL. This includes the corrections in
460 RFC4507bis. The encrypted ticket format is an encrypted encoded
461 SSL_SESSION structure, that way new session features are automatically
464 If a client application caches session in an SSL_SESSION structure
465 support is transparent because tickets are now stored in the encoded
468 The SSL_CTX structure automatically generates keys for ticket
469 protection in servers so again support should be possible
470 with no application modification.
472 If a client or server wishes to disable RFC4507 support then the option
473 SSL_OP_NO_TICKET can be set.
475 Add a TLS extension debugging callback to allow the contents of any client
476 or server extensions to be examined.
478 This work was sponsored by Google.
481 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
482 OpenSSL should now compile cleanly on gcc 4.2
483 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
485 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
486 support including streaming MAC support: this is required for GOST
488 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
490 *) Add option -stream to use PKCS#7 streaming in smime utility. New
491 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
492 to output in BER and PEM format.
495 *) Experimental support for use of HMAC via EVP_PKEY interface. This
496 allows HMAC to be handled via the EVP_DigestSign*() interface. The
497 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
498 ENGINE support for HMAC keys which are unextractable. New -mac and
499 -macopt options to dgst utility.
502 *) New option -sigopt to dgst utility. Update dgst to use
503 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
504 alternative signing paramaters such as X9.31 or PSS in the dgst
508 *) Change ssl_cipher_apply_rule(), the internal function that does
509 the work each time a ciphersuite string requests enabling
510 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
511 removing ("!foo+bar") a class of ciphersuites: Now it maintains
512 the order of disabled ciphersuites such that those ciphersuites
513 that most recently went from enabled to disabled not only stay
514 in order with respect to each other, but also have higher priority
515 than other disabled ciphersuites the next time ciphersuites are
518 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
519 the same ciphersuites as with "HIGH" alone, but in a specific
520 order where the PSK ciphersuites come first (since they are the
521 most recently disabled ciphersuites when "HIGH" is parsed).
523 Also, change ssl_create_cipher_list() (using this new
524 funcionality) such that between otherwise identical
525 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
529 *) Change ssl_create_cipher_list() so that it automatically
530 arranges the ciphersuites in reasonable order before starting
531 to process the rule string. Thus, the definition for "DEFAULT"
532 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
533 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
534 This makes it much easier to arrive at a reasonable default order
535 in applications for which anonymous ciphers are OK (meaning
536 that you can't actually use DEFAULT).
537 [Bodo Moeller; suggested by Victor Duchovni]
539 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
540 processing) into multiple integers instead of setting
541 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
542 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
543 (These masks as well as the individual bit definitions are hidden
544 away into the non-exported interface ssl/ssl_locl.h, so this
545 change to the definition of the SSL_CIPHER structure shouldn't
546 affect applications.) This give us more bits for each of these
547 categories, so there is no longer a need to coagulate AES128 and
548 AES256 into a single algorithm bit, and to coagulate Camellia128
549 and Camellia256 into a single algorithm bit, which has led to all
552 Thus, among other things, the kludge introduced in 0.9.7m and
553 0.9.8e for masking out AES256 independently of AES128 or masking
554 out Camellia256 independently of AES256 is not needed here in 0.9.9.
556 With the change, we also introduce new ciphersuite aliases that
557 so far were missing: "AES128", "AES256", "CAMELLIA128", and
561 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
562 Use the leftmost N bytes of the signature input if the input is
563 larger than the prime q (with N being the size in bytes of q).
566 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
567 it yet and it is largely untested.
570 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
573 *) Initial incomplete changes to avoid need for function casts in OpenSSL
574 some compilers (gcc 4.2 and later) reject their use. Safestack is
575 reimplemented. Update ASN1 to avoid use of legacy functions.
578 *) Win32/64 targets are linked with Winsock2.
581 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
582 to external functions. This can be used to increase CRL handling
583 efficiency especially when CRLs are very large by (for example) storing
584 the CRL revoked certificates in a database.
587 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
588 new CRLs added to a directory can be used. New command line option
589 -verify_return_error to s_client and s_server. This causes real errors
590 to be returned by the verify callback instead of carrying on no matter
591 what. This reflects the way a "real world" verify callback would behave.
594 *) GOST engine, supporting several GOST algorithms and public key formats.
595 Kindly donated by Cryptocom.
598 *) Partial support for Issuing Distribution Point CRL extension. CRLs
599 partitioned by DP are handled but no indirect CRL or reason partitioning
600 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
601 selected via a scoring technique which handles IDP and AKID in CRLs.
604 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
605 will ultimately be used for all verify operations: this will remove the
606 X509_STORE dependency on certificate verification and allow alternative
607 lookup methods. X509_STORE based implementations of these two callbacks.
610 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
611 Modify get_crl() to find a valid (unexpired) CRL if possible.
614 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
615 this would be called X509_CRL_cmp() but that name is already used by
616 a function that just compares CRL issuer names. Cache several CRL
617 extensions in X509_CRL structure and cache CRLDP in X509.
620 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
621 this maps equivalent X509_NAME structures into a consistent structure.
622 Name comparison can then be performed rapidly using memcmp().
625 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
629 *) Allow digests to supply their own micalg string for S/MIME type using
630 the ctrl EVP_MD_CTRL_MICALG.
633 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
634 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
635 ctrl. It can then customise the structure before and/or after signing
639 *) New function OBJ_add_sigid() to allow application defined signature OIDs
640 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
641 to free up any added signature OIDs.
644 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
645 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
646 digest and cipher tables. New options added to openssl utility:
647 list-message-digest-algorithms and list-cipher-algorithms.
650 *) Change the array representation of binary polynomials: the list
651 of degrees of non-zero coefficients is now terminated with -1.
652 Previously it was terminated with 0, which was also part of the
653 value; thus, the array representation was not applicable to
654 polynomials where t^0 has coefficient zero. This change makes
655 the array representation useful in a more general context.
658 *) Various modifications and fixes to SSL/TLS cipher string
659 handling. For ECC, the code now distinguishes between fixed ECDH
660 with RSA certificates on the one hand and with ECDSA certificates
661 on the other hand, since these are separate ciphersuites. The
662 unused code for Fortezza ciphersuites has been removed.
664 For consistency with EDH, ephemeral ECDH is now called "EECDH"
665 (not "ECDHE"). For consistency with the code for DH
666 certificates, use of ECDH certificates is now considered ECDH
667 authentication, not RSA or ECDSA authentication (the latter is
668 merely the CA's signing algorithm and not actively used in the
671 The temporary ciphersuite alias "ECCdraft" is no longer
672 available, and ECC ciphersuites are no longer excluded from "ALL"
673 and "DEFAULT". The following aliases now exist for RFC 4492
674 ciphersuites, most of these by analogy with the DH case:
676 kECDHr - ECDH cert, signed with RSA
677 kECDHe - ECDH cert, signed with ECDSA
678 kECDH - ECDH cert (signed with either RSA or ECDSA)
679 kEECDH - ephemeral ECDH
680 ECDH - ECDH cert or ephemeral ECDH
686 AECDH - anonymous ECDH
687 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
691 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
692 Use correct micalg parameters depending on digest(s) in signed message.
695 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
696 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
699 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
700 an engine to register a method. Add ENGINE lookups for methods and
701 functional reference processing.
704 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
705 EVP_{Sign,Verify}* which allow an application to customise the signature
709 *) New -resign option to smime utility. This adds one or more signers
710 to an existing PKCS#7 signedData structure. Also -md option to use an
711 alternative message digest algorithm for signing.
714 *) Tidy up PKCS#7 routines and add new functions to make it easier to
715 create PKCS7 structures containing multiple signers. Update smime
716 application to support multiple signers.
719 *) New -macalg option to pkcs12 utility to allow setting of an alternative
723 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
724 Reorganize PBE internals to lookup from a static table using NIDs,
725 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
726 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
727 PRF which will be automatically used with PBES2.
730 *) Replace the algorithm specific calls to generate keys in "req" with the
734 *) Update PKCS#7 enveloped data routines to use new API. This is now
735 supported by any public key method supporting the encrypt operation. A
736 ctrl is added to allow the public key algorithm to examine or modify
737 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
741 *) Add a ctrl to asn1 method to allow a public key algorithm to express
742 a default digest type to use. In most cases this will be SHA1 but some
743 algorithms (such as GOST) need to specify an alternative digest. The
744 return value indicates how strong the prefernce is 1 means optional and
745 2 is mandatory (that is it is the only supported type). Modify
746 ASN1_item_sign() to accept a NULL digest argument to indicate it should
747 use the default md. Update openssl utilities to use the default digest
748 type for signing if it is not explicitly indicated.
751 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
752 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
753 signing method from the key type. This effectively removes the link
754 between digests and public key types.
757 *) Add an OID cross reference table and utility functions. Its purpose is to
758 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
759 rsaEncryption. This will allow some of the algorithm specific hackery
760 needed to use the correct OID to be removed.
763 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
764 structures for PKCS7_sign(). They are now set up by the relevant public
768 *) Add provisional EC pkey method with support for ECDSA and ECDH.
771 *) Add support for key derivation (agreement) in the API, DH method and
775 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
776 public and private key formats. As a side effect these add additional
777 command line functionality not previously available: DSA signatures can be
778 generated and verified using pkeyutl and DH key support and generation in
783 [Oliver Tappe <zooey@hirschkaefer.de>]
785 *) New make target "install_html_docs" installs HTML renditions of the
787 [Oliver Tappe <zooey@hirschkaefer.de>]
789 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
790 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
791 support key and parameter generation and add initial key generation
792 functionality for RSA.
795 *) Add functions for main EVP_PKEY_method operations. The undocumented
796 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
797 EVP_PKEY_{encrypt,decrypt}_old.
800 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
801 key API, doesn't do much yet.
804 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
805 public key algorithms. New option to openssl utility:
806 "list-public-key-algorithms" to print out info.
809 *) Implement the Supported Elliptic Curves Extension for
810 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
813 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
814 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
817 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
818 utilities such as rsa, dsa, dsaparam etc except they process any key
822 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
823 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
824 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
828 *) Initial support for pluggable public key ASN1.
829 De-spaghettify the public key ASN1 handling. Move public and private
830 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
831 algorithm specific handling to a single module within the relevant
832 algorithm directory. Add functions to allow (near) opaque processing
833 of public and private key structures.
836 *) Implement the Supported Point Formats Extension for
837 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
840 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
841 for the psk identity [hint] and the psk callback functions to the
842 SSL_SESSION, SSL and SSL_CTX structure.
845 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
849 SSL_CTX_use_psk_identity_hint
850 SSL_get_psk_identity_hint
852 SSL_use_psk_identity_hint
854 [Mika Kousa and Pasi Eronen of Nokia Corporation]
856 *) Add RFC 3161 compliant time stamp request creation, response generation
857 and response verification functionality.
858 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
860 *) Add initial support for TLS extensions, specifically for the server_name
861 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
862 have new members for a host name. The SSL data structure has an
863 additional member SSL_CTX *initial_ctx so that new sessions can be
864 stored in that context to allow for session resumption, even after the
865 SSL has been switched to a new SSL_CTX in reaction to a client's
866 server_name extension.
868 New functions (subject to change):
871 SSL_get_servername_type()
874 New CTRL codes and macros (subject to change):
876 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
877 - SSL_CTX_set_tlsext_servername_callback()
878 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
879 - SSL_CTX_set_tlsext_servername_arg()
880 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
882 openssl s_client has a new '-servername ...' option.
884 openssl s_server has new options '-servername_host ...', '-cert2 ...',
885 '-key2 ...', '-servername_fatal' (subject to change). This allows
886 testing the HostName extension for a specific single host name ('-cert'
887 and '-key' remain fallbacks for handshakes without HostName
888 negotiation). If the unrecogninzed_name alert has to be sent, this by
889 default is a warning; it becomes fatal with the '-servername_fatal'
892 [Peter Sylvester, Remy Allais, Christophe Renou]
894 *) Whirlpool hash implementation is added.
897 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
898 bn(64,32). Because of instruction set limitations it doesn't have
899 any negative impact on performance. This was done mostly in order
900 to make it possible to share assembler modules, such as bn_mul_mont
901 implementations, between 32- and 64-bit builds without hassle.
904 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
905 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
909 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
910 dedicated Montgomery multiplication procedure, is introduced.
911 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
912 "64-bit" performance on certain 32-bit targets.
915 *) New option SSL_OP_NO_COMP to disable use of compression selectively
916 in SSL structures. New SSL ctrl to set maximum send fragment size.
917 Save memory by seeting the I/O buffer sizes dynamically instead of
918 using the maximum available value.
921 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
922 in addition to the text details.
925 *) Very, very preliminary EXPERIMENTAL support for printing of general
926 ASN1 structures. This currently produces rather ugly output and doesn't
927 handle several customised structures at all.
930 *) Integrated support for PVK file format and some related formats such
931 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
932 these in the 'rsa' and 'dsa' utilities.
935 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
938 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
939 place for the (very old) "NETSCAPE" format certificates which are now
940 handled using new ASN1 code equivalents.
943 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
944 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
945 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
948 *) Modify CRL distribution points extension code to print out previously
949 unsupported fields. Enhance extension setting code to allow setting of
953 *) Add print and set support for Issuing Distribution Point CRL extension.
956 *) Change 'Configure' script to enable Camellia by default.
959 Changes between 0.9.8n and 0.9.8o [xx XXX xxxx]
961 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
962 access or freeing data twice (CVE-2010-0742)
963 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
965 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
966 common in certificates and some applications which only call
967 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
970 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
972 *) When rejecting SSL/TLS records due to an incorrect version number, never
973 update s->server with a new major version number. As of
974 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
975 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
976 the previous behavior could result in a read attempt at NULL when
977 receiving specific incorrect SSL/TLS records once record payload
978 protection is active. (CVE-2010-####)
979 [Bodo Moeller, Adam Langley]
981 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
982 could be crashed if the relevant tables were not present (e.g. chrooted).
983 [Tomas Hoger <thoger@redhat.com>]
985 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
987 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
988 [Martin Olsson, Neel Mehta]
990 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
991 accommodate for stack sorting, always a write lock!).
994 *) On some versions of WIN32 Heap32Next is very slow. This can cause
995 excessive delays in the RAND_poll(): over a minute. As a workaround
996 include a time check in the inner Heap32Next loop too.
999 *) The code that handled flushing of data in SSL/TLS originally used the
1000 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1001 the problem outlined in PR#1949. The fix suggested there however can
1002 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1003 of Apache). So instead simplify the code to flush unconditionally.
1004 This should be fine since flushing with no data to flush is a no op.
1007 *) Handle TLS versions 2.0 and later properly and correctly use the
1008 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1009 off ancient servers have a habit of sticking around for a while...
1012 *) Modify compression code so it frees up structures without using the
1013 ex_data callbacks. This works around a problem where some applications
1014 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1015 restarting) then use compression (e.g. SSL with compression) later.
1016 This results in significant per-connection memory leaks and
1017 has caused some security issues including CVE-2008-1678 and
1021 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1022 change when encrypting or decrypting.
1025 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1026 connect and renegotiate with servers which do not support RI.
1027 Until RI is more widely deployed this option is enabled by default.
1030 *) Add "missing" ssl ctrls to clear options and mode.
1033 *) If client attempts to renegotiate and doesn't support RI respond with
1034 a no_renegotiation alert as required by RFC5746. Some renegotiating
1035 TLS clients will continue a connection gracefully when they receive
1036 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1037 waiting for a server hello which it will never receive. Now we treat a
1038 received no_renegotiation alert as a fatal error. This is because
1039 applications requesting a renegotiation might well expect it to succeed
1040 and would have no code in place to handle the server denying it so the
1041 only safe thing to do is to terminate the connection.
1044 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1045 peer supports secure renegotiation and 0 otherwise. Print out peer
1046 renegotiation support in s_client/s_server.
1049 *) Replace the highly broken and deprecated SPKAC certification method with
1050 the updated NID creation version. This should correctly handle UTF8.
1053 *) Implement RFC5746. Re-enable renegotiation but require the extension
1054 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1055 turns out to be a bad idea. It has been replaced by
1056 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1057 SSL_CTX_set_options(). This is really not recommended unless you
1058 know what you are doing.
1059 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1061 *) Fixes to stateless session resumption handling. Use initial_ctx when
1062 issuing and attempting to decrypt tickets in case it has changed during
1063 servername handling. Use a non-zero length session ID when attempting
1064 stateless session resumption: this makes it possible to determine if
1065 a resumption has occurred immediately after receiving server hello
1066 (several places in OpenSSL subtly assume this) instead of later in
1070 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1071 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1072 fixes for a few places where the return code is not checked
1074 [Julia Lawall <julia@diku.dk>]
1076 *) Add --strict-warnings option to Configure script to include devteam
1077 warnings in other configurations.
1080 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1081 makes it possible to install openssl libraries in locations which
1082 have names other than "lib", for example "/usr/lib64" which some
1084 [Steve Henson, based on patch from Jeremy Utley]
1086 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1087 X690 8.9.12 and can produce some misleading textual output of OIDs.
1088 [Steve Henson, reported by Dan Kaminsky]
1090 *) Delete MD2 from algorithm tables. This follows the recommendation in
1091 several standards that it is not used in new applications due to
1092 several cryptographic weaknesses. For binary compatibility reasons
1093 the MD2 API is still compiled in by default.
1096 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1100 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1101 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1103 [Guenter <lists@gknw.net>]
1105 *) Fix the server certificate chain building code to use X509_verify_cert(),
1106 it used to have an ad-hoc builder which was unable to cope with anything
1107 other than a simple chain.
1108 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1110 *) Don't check self signed certificate signatures in X509_verify_cert()
1111 by default (a flag can override this): it just wastes time without
1112 adding any security. As a useful side effect self signed root CAs
1113 with non-FIPS digests are now usable in FIPS mode.
1116 *) In dtls1_process_out_of_seq_message() the check if the current message
1117 is already buffered was missing. For every new message was memory
1118 allocated, allowing an attacker to perform an denial of service attack
1119 with sending out of seq handshake messages until there is no memory
1120 left. Additionally every future messege was buffered, even if the
1121 sequence number made no sense and would be part of another handshake.
1122 So only messages with sequence numbers less than 10 in advance will be
1123 buffered. (CVE-2009-1378)
1124 [Robin Seggelmann, discovered by Daniel Mentz]
1126 *) Records are buffered if they arrive with a future epoch to be
1127 processed after finishing the corresponding handshake. There is
1128 currently no limitation to this buffer allowing an attacker to perform
1129 a DOS attack with sending records with future epochs until there is no
1130 memory left. This patch adds the pqueue_size() function to detemine
1131 the size of a buffer and limits the record buffer to 100 entries.
1133 [Robin Seggelmann, discovered by Daniel Mentz]
1135 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1136 parent structure is freed. (CVE-2009-1379)
1139 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1140 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1143 [Ilya O. <vrghost@gmail.com>]
1145 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1147 *) Disable renegotiation completely - this fixes a severe security
1148 problem (CVE-2009-3555) at the cost of breaking all
1149 renegotiation. Renegotiation can be re-enabled by setting
1150 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1151 run-time. This is really not recommended unless you know what
1155 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1157 *) Don't set val to NULL when freeing up structures, it is freed up by
1158 underlying code. If sizeof(void *) > sizeof(long) this can result in
1159 zeroing past the valid field. (CVE-2009-0789)
1160 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1162 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1163 checked correctly. This would allow some invalid signed attributes to
1164 appear to verify correctly. (CVE-2009-0591)
1165 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1167 *) Reject UniversalString and BMPString types with invalid lengths. This
1168 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1169 a legal length. (CVE-2009-0590)
1172 *) Set S/MIME signing as the default purpose rather than setting it
1173 unconditionally. This allows applications to override it at the store
1177 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1178 to handle some structures.
1181 *) Improve efficiency of mem_gets: don't search whole buffer each time
1183 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1185 *) New -hex option for openssl rand.
1188 *) Print out UTF8String and NumericString when parsing ASN1.
1191 *) Support NumericString type for name components.
1194 *) Allow CC in the environment to override the automatically chosen
1195 compiler. Note that nothing is done to ensure flags work with the
1199 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1201 *) Properly check EVP_VerifyFinal() and similar return values
1203 [Ben Laurie, Bodo Moeller, Google Security Team]
1205 *) Enable TLS extensions by default.
1208 *) Allow the CHIL engine to be loaded, whether the application is
1209 multithreaded or not. (This does not release the developer from the
1210 obligation to set up the dynamic locking callbacks.)
1211 [Sander Temme <sander@temme.net>]
1213 *) Use correct exit code if there is an error in dgst command.
1214 [Steve Henson; problem pointed out by Roland Dirlewanger]
1216 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1217 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1220 *) Add experimental JPAKE support, including demo authentication in
1221 s_client and s_server.
1224 *) Set the comparison function in v3_addr_canonize().
1225 [Rob Austein <sra@hactrn.net>]
1227 *) Add support for XMPP STARTTLS in s_client.
1228 [Philip Paeps <philip@freebsd.org>]
1230 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1231 to ensure that even with this option, only ciphersuites in the
1232 server's preference list will be accepted. (Note that the option
1233 applies only when resuming a session, so the earlier behavior was
1234 just about the algorithm choice for symmetric cryptography.)
1237 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1239 *) Fix NULL pointer dereference if a DTLS server received
1240 ChangeCipherSpec as first record (CVE-2009-1386).
1243 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1244 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1247 *) The fix in 0.9.8c that supposedly got rid of unsafe
1248 double-checked locking was incomplete for RSA blinding,
1249 addressing just one layer of what turns out to have been
1250 doubly unsafe triple-checked locking.
1252 So now fix this for real by retiring the MONT_HELPER macro
1253 in crypto/rsa/rsa_eay.c.
1255 [Bodo Moeller; problem pointed out by Marius Schilder]
1257 *) Various precautionary measures:
1259 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1261 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1262 (NB: This would require knowledge of the secret session ticket key
1263 to exploit, in which case you'd be SOL either way.)
1265 - Change bn_nist.c so that it will properly handle input BIGNUMs
1266 outside the expected range.
1268 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1271 [Neel Mehta, Bodo Moeller]
1273 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1274 the load fails. Useful for distros.
1275 [Ben Laurie and the FreeBSD team]
1277 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1280 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1283 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1285 This work was sponsored by Logica.
1288 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1289 keystores. Support for SSL/TLS client authentication too.
1290 Not compiled unless enable-capieng specified to Configure.
1292 This work was sponsored by Logica.
1295 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1296 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1297 attribute creation routines such as certifcate requests and PKCS#12
1301 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1303 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1304 handshake which could lead to a cilent crash as found using the
1305 Codenomicon TLS test suite (CVE-2008-1672)
1306 [Steve Henson, Mark Cox]
1308 *) Fix double free in TLS server name extensions which could lead to
1309 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1312 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1314 Clear the error queue to ensure that error entries left from
1315 older function calls do not interfere with the correct operation.
1316 [Lutz Jaenicke, Erik de Castro Lopo]
1318 *) Remove root CA certificates of commercial CAs:
1320 The OpenSSL project does not recommend any specific CA and does not
1321 have any policy with respect to including or excluding any CA.
1322 Therefore it does not make any sense to ship an arbitrary selection
1323 of root CA certificates with the OpenSSL software.
1326 *) RSA OAEP patches to fix two separate invalid memory reads.
1327 The first one involves inputs when 'lzero' is greater than
1328 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1329 before the beginning of from). The second one involves inputs where
1330 the 'db' section contains nothing but zeroes (there is a one-byte
1331 invalid read after the end of 'db').
1332 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1334 *) Partial backport from 0.9.9-dev:
1336 Introduce bn_mul_mont (dedicated Montgomery multiplication
1337 procedure) as a candidate for BIGNUM assembler implementation.
1338 While 0.9.9-dev uses assembler for various architectures, only
1339 x86_64 is available by default here in the 0.9.8 branch, and
1340 32-bit x86 is available through a compile-time setting.
1342 To try the 32-bit x86 assembler implementation, use Configure
1343 option "enable-montasm" (which exists only for this backport).
1345 As "enable-montasm" for 32-bit x86 disclaims code stability
1346 anyway, in this constellation we activate additional code
1347 backported from 0.9.9-dev for further performance improvements,
1348 namely BN_from_montgomery_word. (To enable this otherwise,
1349 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1351 [Andy Polyakov (backport partially by Bodo Moeller)]
1353 *) Add TLS session ticket callback. This allows an application to set
1354 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1355 values. This is useful for key rollover for example where several key
1356 sets may exist with different names.
1359 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1360 This was broken until now in 0.9.8 releases, such that the only way
1361 a registered ENGINE could be used (assuming it initialises
1362 successfully on the host) was to explicitly set it as the default
1363 for the relevant algorithms. This is in contradiction with 0.9.7
1364 behaviour and the documentation. With this fix, when an ENGINE is
1365 registered into a given algorithm's table of implementations, the
1366 'uptodate' flag is reset so that auto-discovery will be used next
1367 time a new context for that algorithm attempts to select an
1369 [Ian Lister (tweaked by Geoff Thorpe)]
1371 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1372 implemention in the following ways:
1374 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1377 Lack of BER streaming support means one pass streaming processing is
1378 only supported if data is detached: setting the streaming flag is
1379 ignored for embedded content.
1381 CMS support is disabled by default and must be explicitly enabled
1382 with the enable-cms configuration option.
1385 *) Update the GMP engine glue to do direct copies between BIGNUM and
1386 mpz_t when openssl and GMP use the same limb size. Otherwise the
1387 existing "conversion via a text string export" trick is still used.
1388 [Paul Sheer <paulsheer@gmail.com>]
1390 *) Zlib compression BIO. This is a filter BIO which compressed and
1391 uncompresses any data passed through it.
1394 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1395 RFC3394 compatible AES key wrapping.
1398 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1399 sets string data without copying. X509_ALGOR_set0() and
1400 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1401 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1402 from an X509_ATTRIBUTE structure optionally checking it occurs only
1403 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1407 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1408 to get the expected BN_FLG_CONSTTIME behavior.
1409 [Bodo Moeller (Google)]
1413 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1414 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1415 - added some more tests to do_tests.pl
1416 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1417 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1418 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1419 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1420 - various changes to netware.pl to enable gcc-cross builds on Win32
1422 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1423 - various changes to fix missing prototype warnings
1424 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1425 - added AES, WHIRLPOOL and CPUID assembler code to build files
1426 - added missing AES assembler make rules to mk1mf.pl
1427 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1428 [Guenter Knauf <eflash@gmx.net>]
1430 *) Implement certificate status request TLS extension defined in RFC3546.
1431 A client can set the appropriate parameters and receive the encoded
1432 OCSP response via a callback. A server can query the supplied parameters
1433 and set the encoded OCSP response in the callback. Add simplified examples
1434 to s_client and s_server.
1437 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1439 *) Fix various bugs:
1440 + Binary incompatibility of ssl_ctx_st structure
1441 + DTLS interoperation with non-compliant servers
1442 + Don't call get_session_cb() without proposed session
1443 + Fix ia64 assembler code
1444 [Andy Polyakov, Steve Henson]
1446 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1448 *) DTLS Handshake overhaul. There were longstanding issues with
1449 OpenSSL DTLS implementation, which were making it impossible for
1450 RFC 4347 compliant client to communicate with OpenSSL server.
1451 Unfortunately just fixing these incompatibilities would "cut off"
1452 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1453 server keeps tolerating non RFC compliant syntax. The opposite is
1454 not true, 0.9.8f client can not communicate with earlier server.
1455 This update even addresses CVE-2007-4995.
1458 *) Changes to avoid need for function casts in OpenSSL: some compilers
1459 (gcc 4.2 and later) reject their use.
1460 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1463 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1464 RFC4507bis. The encrypted ticket format is an encrypted encoded
1465 SSL_SESSION structure, that way new session features are automatically
1468 If a client application caches session in an SSL_SESSION structure
1469 support is transparent because tickets are now stored in the encoded
1472 The SSL_CTX structure automatically generates keys for ticket
1473 protection in servers so again support should be possible
1474 with no application modification.
1476 If a client or server wishes to disable RFC4507 support then the option
1477 SSL_OP_NO_TICKET can be set.
1479 Add a TLS extension debugging callback to allow the contents of any client
1480 or server extensions to be examined.
1482 This work was sponsored by Google.
1485 *) Add initial support for TLS extensions, specifically for the server_name
1486 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1487 have new members for a host name. The SSL data structure has an
1488 additional member SSL_CTX *initial_ctx so that new sessions can be
1489 stored in that context to allow for session resumption, even after the
1490 SSL has been switched to a new SSL_CTX in reaction to a client's
1491 server_name extension.
1493 New functions (subject to change):
1495 SSL_get_servername()
1496 SSL_get_servername_type()
1499 New CTRL codes and macros (subject to change):
1501 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1502 - SSL_CTX_set_tlsext_servername_callback()
1503 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1504 - SSL_CTX_set_tlsext_servername_arg()
1505 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1507 openssl s_client has a new '-servername ...' option.
1509 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1510 '-key2 ...', '-servername_fatal' (subject to change). This allows
1511 testing the HostName extension for a specific single host name ('-cert'
1512 and '-key' remain fallbacks for handshakes without HostName
1513 negotiation). If the unrecogninzed_name alert has to be sent, this by
1514 default is a warning; it becomes fatal with the '-servername_fatal'
1517 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1519 *) Add AES and SSE2 assembly language support to VC++ build.
1522 *) Mitigate attack on final subtraction in Montgomery reduction.
1525 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1526 (which previously caused an internal error).
1529 *) Squeeze another 10% out of IGE mode when in != out.
1532 *) AES IGE mode speedup.
1533 [Dean Gaudet (Google)]
1535 *) Add the Korean symmetric 128-bit cipher SEED (see
1536 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1537 add SEED ciphersuites from RFC 4162:
1539 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1540 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1541 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1542 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1544 To minimize changes between patchlevels in the OpenSSL 0.9.8
1545 series, SEED remains excluded from compilation unless OpenSSL
1546 is configured with 'enable-seed'.
1547 [KISA, Bodo Moeller]
1549 *) Mitigate branch prediction attacks, which can be practical if a
1550 single processor is shared, allowing a spy process to extract
1551 information. For detailed background information, see
1552 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1553 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1554 and Necessary Software Countermeasures"). The core of the change
1555 are new versions BN_div_no_branch() and
1556 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1557 respectively, which are slower, but avoid the security-relevant
1558 conditional branches. These are automatically called by BN_div()
1559 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1560 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1561 remove a conditional branch.
1563 BN_FLG_CONSTTIME is the new name for the previous
1564 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1565 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1566 in the exponent causes BN_mod_exp_mont() to use the alternative
1567 implementation in BN_mod_exp_mont_consttime().) The old name
1568 remains as a deprecated alias.
1570 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1571 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1572 constant-time implementations for more than just exponentiation.
1573 Here too the old name is kept as a deprecated alias.
1575 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1576 the BN_BLINDING structure gets an independent copy of the
1577 modulus. This means that the previous "BIGNUM *m" argument to
1578 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1579 essentially becomes "const BIGNUM *m", although we can't actually
1580 change this in the header file before 0.9.9. It allows
1581 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1582 enable BN_FLG_CONSTTIME.
1584 [Matthew D Wood (Intel Corp)]
1586 *) In the SSL/TLS server implementation, be strict about session ID
1587 context matching (which matters if an application uses a single
1588 external cache for different purposes). Previously,
1589 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1590 set. This did ensure strict client verification, but meant that,
1591 with applications using a single external cache for quite
1592 different requirements, clients could circumvent ciphersuite
1593 restrictions for a given session ID context by starting a session
1594 in a different context.
1597 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1598 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1599 authentication-only ciphersuites.
1602 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1603 not complete and could lead to a possible single byte overflow
1604 (CVE-2007-5135) [Ben Laurie]
1606 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1608 *) Since AES128 and AES256 (and similarly Camellia128 and
1609 Camellia256) share a single mask bit in the logic of
1610 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1611 kludge to work properly if AES128 is available and AES256 isn't
1612 (or if Camellia128 is available and Camellia256 isn't).
1615 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1616 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1617 When a point or a seed is encoded in a BIT STRING, we need to
1618 prevent the removal of trailing zero bits to get the proper DER
1619 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1620 of a NamedBitList, for which trailing 0 bits need to be removed.)
1623 *) Have SSL/TLS server implementation tolerate "mismatched" record
1624 protocol version while receiving ClientHello even if the
1625 ClientHello is fragmented. (The server can't insist on the
1626 particular protocol version it has chosen before the ServerHello
1627 message has informed the client about his choice.)
1630 *) Add RFC 3779 support.
1631 [Rob Austein for ARIN, Ben Laurie]
1633 *) Load error codes if they are not already present instead of using a
1634 static variable. This allows them to be cleanly unloaded and reloaded.
1635 Improve header file function name parsing.
1638 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1639 or CAPABILITY handshake as required by RFCs.
1642 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1644 *) Introduce limits to prevent malicious keys being able to
1645 cause a denial of service. (CVE-2006-2940)
1646 [Steve Henson, Bodo Moeller]
1648 *) Fix ASN.1 parsing of certain invalid structures that can result
1649 in a denial of service. (CVE-2006-2937) [Steve Henson]
1651 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1652 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1654 *) Fix SSL client code which could crash if connecting to a
1655 malicious SSLv2 server. (CVE-2006-4343)
1656 [Tavis Ormandy and Will Drewry, Google Security Team]
1658 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1659 match only those. Before that, "AES256-SHA" would be interpreted
1660 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1661 the same strength classification in 0.9.7h) as we currently only
1662 have a single AES bit in the ciphersuite description bitmap.
1663 That change, however, also applied to ciphersuite strings such as
1664 "RC4-MD5" that intentionally matched multiple ciphersuites --
1665 namely, SSL 2.0 ciphersuites in addition to the more common ones
1666 from SSL 3.0/TLS 1.0.
1668 So we change the selection algorithm again: Naming an explicit
1669 ciphersuite selects this one ciphersuite, and any other similar
1670 ciphersuite (same bitmap) from *other* protocol versions.
1671 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1672 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1674 Since SSL 2.0 does not have any ciphersuites for which the
1675 128/256 bit distinction would be relevant, this works for now.
1676 The proper fix will be to use different bits for AES128 and
1677 AES256, which would have avoided the problems from the beginning;
1678 however, bits are scarce, so we can only do this in a new release
1679 (not just a patchlevel) when we can change the SSL_CIPHER
1680 definition to split the single 'unsigned long mask' bitmap into
1681 multiple values to extend the available space.
1685 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1687 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1688 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1690 *) Add AES IGE and biIGE modes.
1693 *) Change the Unix randomness entropy gathering to use poll() when
1694 possible instead of select(), since the latter has some
1695 undesirable limitations.
1696 [Darryl Miles via Richard Levitte and Bodo Moeller]
1698 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1699 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1700 cannot be implicitly activated as part of, e.g., the "AES" alias.
1701 However, please upgrade to OpenSSL 0.9.9[-dev] for
1702 non-experimental use of the ECC ciphersuites to get TLS extension
1703 support, which is required for curve and point format negotiation
1704 to avoid potential handshake problems.
1707 *) Disable rogue ciphersuites:
1709 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1710 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1711 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1713 The latter two were purportedly from
1714 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1717 Also deactivate the remaining ciphersuites from
1718 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1719 unofficial, and the ID has long expired.
1722 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1723 dual-core machines) and other potential thread-safety issues.
1726 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1727 versions), which is now available for royalty-free use
1728 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1729 Also, add Camellia TLS ciphersuites from RFC 4132.
1731 To minimize changes between patchlevels in the OpenSSL 0.9.8
1732 series, Camellia remains excluded from compilation unless OpenSSL
1733 is configured with 'enable-camellia'.
1736 *) Disable the padding bug check when compression is in use. The padding
1737 bug check assumes the first packet is of even length, this is not
1738 necessarily true if compresssion is enabled and can result in false
1739 positives causing handshake failure. The actual bug test is ancient
1740 code so it is hoped that implementations will either have fixed it by
1741 now or any which still have the bug do not support compression.
1744 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1746 *) When applying a cipher rule check to see if string match is an explicit
1747 cipher suite and only match that one cipher suite if it is.
1750 *) Link in manifests for VC++ if needed.
1751 [Austin Ziegler <halostatue@gmail.com>]
1753 *) Update support for ECC-based TLS ciphersuites according to
1754 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1755 TLS extensions, which are supported starting with the 0.9.9
1756 branch, not in the OpenSSL 0.9.8 branch).
1759 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1760 opaque EVP_CIPHER_CTX handling.
1763 *) Fixes and enhancements to zlib compression code. We now only use
1764 "zlib1.dll" and use the default __cdecl calling convention on Win32
1765 to conform with the standards mentioned here:
1766 http://www.zlib.net/DLL_FAQ.txt
1767 Static zlib linking now works on Windows and the new --with-zlib-include
1768 --with-zlib-lib options to Configure can be used to supply the location
1769 of the headers and library. Gracefully handle case where zlib library
1773 *) Several fixes and enhancements to the OID generation code. The old code
1774 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1775 handle numbers larger than ULONG_MAX, truncated printing and had a
1776 non standard OBJ_obj2txt() behaviour.
1779 *) Add support for building of engines under engine/ as shared libraries
1780 under VC++ build system.
1783 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1784 Hopefully, we will not see any false combination of paths any more.
1787 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1789 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1790 (part of SSL_OP_ALL). This option used to disable the
1791 countermeasure against man-in-the-middle protocol-version
1792 rollback in the SSL 2.0 server implementation, which is a bad
1793 idea. (CVE-2005-2969)
1795 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1796 for Information Security, National Institute of Advanced Industrial
1797 Science and Technology [AIST], Japan)]
1799 *) Add two function to clear and return the verify parameter flags.
1802 *) Keep cipherlists sorted in the source instead of sorting them at
1803 runtime, thus removing the need for a lock.
1806 *) Avoid some small subgroup attacks in Diffie-Hellman.
1807 [Nick Mathewson and Ben Laurie]
1809 *) Add functions for well-known primes.
1812 *) Extended Windows CE support.
1813 [Satoshi Nakamura and Andy Polyakov]
1815 *) Initialize SSL_METHOD structures at compile time instead of during
1816 runtime, thus removing the need for a lock.
1819 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1820 attempting to decrypt each encrypted key in turn. Add support to
1824 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1826 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1829 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1832 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1833 key into the same file any more.
1836 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1839 *) Add -utf8 command line and config file option to 'ca'.
1840 [Stefan <stf@udoma.org]
1842 *) Removed the macro des_crypt(), as it seems to conflict with some
1843 libraries. Use DES_crypt().
1846 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1847 involves renaming the source and generated shared-libs for
1848 both. The engines will accept the corrected or legacy ids
1849 ('ncipher' and '4758_cca' respectively) when binding. NB,
1850 this only applies when building 'shared'.
1851 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1853 *) Add attribute functions to EVP_PKEY structure. Modify
1854 PKCS12_create() to recognize a CSP name attribute and
1855 use it. Make -CSP option work again in pkcs12 utility.
1858 *) Add new functionality to the bn blinding code:
1859 - automatic re-creation of the BN_BLINDING parameters after
1860 a fixed number of uses (currently 32)
1861 - add new function for parameter creation
1862 - introduce flags to control the update behaviour of the
1863 BN_BLINDING parameters
1864 - hide BN_BLINDING structure
1865 Add a second BN_BLINDING slot to the RSA structure to improve
1866 performance when a single RSA object is shared among several
1870 *) Add support for DTLS.
1871 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1873 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1874 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1877 *) Remove buggy and incompletet DH cert support from
1878 ssl/ssl_rsa.c and ssl/s3_both.c
1881 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1882 the apps/openssl applications.
1885 *) Compile clean with "-Wall -Wmissing-prototypes
1886 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1887 DEBUG_SAFESTACK must also be set.
1890 *) Change ./Configure so that certain algorithms can be disabled by default.
1891 The new counterpiece to "no-xxx" is "enable-xxx".
1893 The patented RC5 and MDC2 algorithms will now be disabled unless
1894 "enable-rc5" and "enable-mdc2", respectively, are specified.
1896 (IDEA remains enabled despite being patented. This is because IDEA
1897 is frequently required for interoperability, and there is no license
1898 fee for non-commercial use. As before, "no-idea" can be used to
1899 avoid this algorithm.)
1903 *) Add processing of proxy certificates (see RFC 3820). This work was
1904 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1905 EGEE (Enabling Grids for E-science in Europe).
1908 *) RC4 performance overhaul on modern architectures/implementations, such
1909 as Intel P4, IA-64 and AMD64.
1912 *) New utility extract-section.pl. This can be used specify an alternative
1913 section number in a pod file instead of having to treat each file as
1914 a separate case in Makefile. This can be done by adding two lines to the
1917 =for comment openssl_section:XXX
1919 The blank line is mandatory.
1923 *) New arguments -certform, -keyform and -pass for s_client and s_server
1924 to allow alternative format key and certificate files and passphrase
1928 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
1929 update associated structures and add various utility functions.
1931 Add new policy related verify parameters, include policy checking in
1932 standard verify code. Enhance 'smime' application with extra parameters
1933 to support policy checking and print out.
1936 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
1937 Nehemiah processors. These extensions support AES encryption in hardware
1938 as well as RNG (though RNG support is currently disabled).
1939 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
1941 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
1944 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
1945 [Andy Polyakov and a number of other people]
1947 *) Improved PowerPC platform support. Most notably BIGNUM assembler
1948 implementation contributed by IBM.
1949 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
1951 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
1952 exponent rather than 'unsigned long'. There is a corresponding change to
1953 the new 'rsa_keygen' element of the RSA_METHOD structure.
1954 [Jelte Jansen, Geoff Thorpe]
1956 *) Functionality for creating the initial serial number file is now
1957 moved from CA.pl to the 'ca' utility with a new option -create_serial.
1959 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
1960 number file to 1, which is bound to cause problems. To avoid
1961 the problems while respecting compatibility between different 0.9.7
1962 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
1963 CA.pl for serial number initialization. With the new release 0.9.8,
1964 we can fix the problem directly in the 'ca' utility.)
1967 *) Reduced header interdepencies by declaring more opaque objects in
1968 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
1969 give fewer recursive includes, which could break lazy source code - so
1970 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
1971 developers should define this symbol when building and using openssl to
1972 ensure they track the recommended behaviour, interfaces, [etc], but
1973 backwards-compatible behaviour prevails when this isn't defined.
1976 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
1979 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
1980 This will generate a random key of the appropriate length based on the
1981 cipher context. The EVP_CIPHER can provide its own random key generation
1982 routine to support keys of a specific form. This is used in the des and
1983 3des routines to generate a key of the correct parity. Update S/MIME
1984 code to use new functions and hence generate correct parity DES keys.
1985 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
1986 valid (weak or incorrect parity).
1989 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
1990 as looking them up. This is useful when the verified structure may contain
1991 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
1992 present unless the new PKCS7_NO_CRL flag is asserted.
1995 *) Extend ASN1 oid configuration module. It now additionally accepts the
1998 shortName = some long name, 1.2.3.4
2001 *) Reimplemented the BN_CTX implementation. There is now no more static
2002 limitation on the number of variables it can handle nor the depth of the
2003 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2004 information can now expand as required, and rather than having a single
2005 static array of bignums, BN_CTX now uses a linked-list of such arrays
2006 allowing it to expand on demand whilst maintaining the usefulness of
2007 BN_CTX's "bundling".
2010 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2011 to allow all RSA operations to function using a single BN_CTX.
2014 *) Preliminary support for certificate policy evaluation and checking. This
2015 is initially intended to pass the tests outlined in "Conformance Testing
2016 of Relying Party Client Certificate Path Processing Logic" v1.07.
2019 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2020 remained unused and not that useful. A variety of other little bignum
2021 tweaks and fixes have also been made continuing on from the audit (see
2025 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2026 associated ASN1, EVP and SSL functions and old ASN1 macros.
2029 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2030 and this should never fail. So the return value from the use of
2031 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2032 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2035 *) BN_CTX_get() should return zero-valued bignums, providing the same
2036 initialised value as BN_new().
2037 [Geoff Thorpe, suggested by Ulf Möller]
2039 *) Support for inhibitAnyPolicy certificate extension.
2042 *) An audit of the BIGNUM code is underway, for which debugging code is
2043 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2044 is considered valid when processing BIGNUMs, and causes execution to
2045 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2046 further steps are taken to deliberately pollute unused data in BIGNUM
2047 structures to try and expose faulty code further on. For now, openssl will
2048 (in its default mode of operation) continue to tolerate the inconsistent
2049 forms that it has tolerated in the past, but authors and packagers should
2050 consider trying openssl and their own applications when compiled with
2051 these debugging symbols defined. It will help highlight potential bugs in
2052 their own code, and will improve the test coverage for OpenSSL itself. At
2053 some point, these tighter rules will become openssl's default to improve
2054 maintainability, though the assert()s and other overheads will remain only
2055 in debugging configurations. See bn.h for more details.
2056 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2058 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2059 that can only be obtained through BN_CTX_new() (which implicitly
2060 initialises it). The presence of this function only made it possible
2061 to overwrite an existing structure (and cause memory leaks).
2064 *) Because of the callback-based approach for implementing LHASH as a
2065 template type, lh_insert() adds opaque objects to hash-tables and
2066 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2067 to clean up those corresponding objects before destroying the hash table
2068 (and losing the object pointers). So some over-zealous constifications in
2069 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2070 objects as "const" and the lh_doall[_arg] callback wrappers are not
2071 prototyped to have "const" restrictions on the object pointers they are
2072 given (and so aren't required to cast them away any more).
2075 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2076 (speed) prefers to use its own implementation. The two implementations
2077 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2078 its object type properly exposed (MS_TM) instead of casting to/from "char
2079 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2080 aren't necessarily the greatest nomenclatures - but this is what was used
2081 internally to the implementation so I've used that for now.
2084 *) Ensure that deprecated functions do not get compiled when
2085 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2086 the self-tests were still using deprecated key-generation functions so
2087 these have been updated also.
2090 *) Reorganise PKCS#7 code to separate the digest location functionality
2091 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2092 New function PKCS7_set_digest() to set the digest type for PKCS#7
2093 digestedData type. Add additional code to correctly generate the
2094 digestedData type and add support for this type in PKCS7 initialization
2098 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2099 structure of type "other".
2102 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2103 sure the loop does correctly stop and breaking ("division by zero")
2104 modulus operations are not performed. The (pre-generated) prime
2105 table crypto/bn/bn_prime.h was already correct, but it could not be
2106 re-generated on some platforms because of the "division by zero"
2107 situation in the script.
2108 [Ralf S. Engelschall]
2110 *) Update support for ECC-based TLS ciphersuites according to
2111 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2112 SHA-1 now is only used for "small" curves (where the
2113 representation of a field element takes up to 24 bytes); for
2114 larger curves, the field element resulting from ECDH is directly
2115 used as premaster secret.
2116 [Douglas Stebila (Sun Microsystems Laboratories)]
2118 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2119 curve secp160r1 to the tests.
2120 [Douglas Stebila (Sun Microsystems Laboratories)]
2122 *) Add the possibility to load symbols globally with DSO.
2123 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2125 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2126 control of the error stack.
2129 *) Add support for STORE in ENGINE.
2132 *) Add the STORE type. The intention is to provide a common interface
2133 to certificate and key stores, be they simple file-based stores, or
2134 HSM-type store, or LDAP stores, or...
2135 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2138 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2139 pass a list of arguments to any function as well as provide a way
2140 for a function to pass data back to the caller.
2143 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2144 works like BUF_strdup() but can be used to duplicate a portion of
2145 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2149 *) Add the function sk_find_ex() which works like sk_find(), but will
2150 return an index to an element even if an exact match couldn't be
2151 found. The index is guaranteed to point at the element where the
2152 searched-for key would be inserted to preserve sorting order.
2155 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2156 takes an extra flags argument for optional functionality. Currently,
2157 the following flags are defined:
2159 OBJ_BSEARCH_VALUE_ON_NOMATCH
2160 This one gets OBJ_bsearch_ex() to return a pointer to the first
2161 element where the comparing function returns a negative or zero
2164 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2165 This one gets OBJ_bsearch_ex() to return a pointer to the first
2166 element where the comparing function returns zero. This is useful
2167 if there are more than one element where the comparing function
2171 *) Make it possible to create self-signed certificates with 'openssl ca'
2172 in such a way that the self-signed certificate becomes part of the
2173 CA database and uses the same mechanisms for serial number generation
2174 as all other certificate signing. The new flag '-selfsign' enables
2175 this functionality. Adapt CA.sh and CA.pl.in.
2178 *) Add functionality to check the public key of a certificate request
2179 against a given private. This is useful to check that a certificate
2180 request can be signed by that key (self-signing).
2183 *) Make it possible to have multiple active certificates with the same
2184 subject in the CA index file. This is done only if the keyword
2185 'unique_subject' is set to 'no' in the main CA section (default
2186 if 'CA_default') of the configuration file. The value is saved
2187 with the database itself in a separate index attribute file,
2188 named like the index file with '.attr' appended to the name.
2191 *) Generate muti valued AVAs using '+' notation in config files for
2195 *) Support for nameConstraints certificate extension.
2198 *) Support for policyConstraints certificate extension.
2201 *) Support for policyMappings certificate extension.
2204 *) Make sure the default DSA_METHOD implementation only uses its
2205 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2206 and change its own handlers to be NULL so as to remove unnecessary
2207 indirection. This lets alternative implementations fallback to the
2208 default implementation more easily.
2211 *) Support for directoryName in GeneralName related extensions
2215 *) Make it possible to link applications using Makefile.shared.
2216 Make that possible even when linking against static libraries!
2219 *) Support for single pass processing for S/MIME signing. This now
2220 means that S/MIME signing can be done from a pipe, in addition
2221 cleartext signing (multipart/signed type) is effectively streaming
2222 and the signed data does not need to be all held in memory.
2224 This is done with a new flag PKCS7_STREAM. When this flag is set
2225 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2226 is done after the data is output (and digests calculated) in
2227 SMIME_write_PKCS7().
2230 *) Add full support for -rpath/-R, both in shared libraries and
2231 applications, at least on the platforms where it's known how
2235 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2236 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2237 will now compute a table of multiples of the generator that
2238 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2239 faster (notably in the case of a single point multiplication,
2240 scalar * generator).
2241 [Nils Larsch, Bodo Moeller]
2243 *) IPv6 support for certificate extensions. The various extensions
2244 which use the IP:a.b.c.d can now take IPv6 addresses using the
2245 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2249 *) Added an ENGINE that implements RSA by performing private key
2250 exponentiations with the GMP library. The conversions to and from
2251 GMP's mpz_t format aren't optimised nor are any montgomery forms
2252 cached, and on x86 it appears OpenSSL's own performance has caught up.
2253 However there are likely to be other architectures where GMP could
2254 provide a boost. This ENGINE is not built in by default, but it can be
2255 specified at Configure time and should be accompanied by the necessary
2256 linker additions, eg;
2257 ./config -DOPENSSL_USE_GMP -lgmp
2260 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2261 testing availability of engines with "-t" - the old behaviour is
2262 produced by increasing the feature's verbosity with "-tt".
2265 *) ECDSA routines: under certain error conditions uninitialized BN objects
2266 could be freed. Solution: make sure initialization is performed early
2267 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2271 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2272 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2273 software implementations. For DSA and DH, parameter generation can
2274 also be overriden by providing the appropriate method callbacks.
2277 *) Change the "progress" mechanism used in key-generation and
2278 primality testing to functions that take a new BN_GENCB pointer in
2279 place of callback/argument pairs. The new API functions have "_ex"
2280 postfixes and the older functions are reimplemented as wrappers for
2281 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2282 declarations of the old functions to help (graceful) attempts to
2283 migrate to the new functions. Also, the new key-generation API
2284 functions operate on a caller-supplied key-structure and return
2285 success/failure rather than returning a key or NULL - this is to
2286 help make "keygen" another member function of RSA_METHOD etc.
2288 Example for using the new callback interface:
2290 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2294 BN_GENCB_set(&my_cb, my_callback, my_arg);
2296 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2297 /* For the meaning of a, b in calls to my_callback(), see the
2298 * documentation of the function that calls the callback.
2299 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2300 * my_callback should return 1 if it wants BN_is_prime_ex()
2301 * to continue, or 0 to stop.
2306 *) Change the ZLIB compression method to be stateful, and make it
2307 available to TLS with the number defined in
2308 draft-ietf-tls-compression-04.txt.
2311 *) Add the ASN.1 structures and functions for CertificatePair, which
2312 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2314 CertificatePair ::= SEQUENCE {
2315 forward [0] Certificate OPTIONAL,
2316 reverse [1] Certificate OPTIONAL,
2317 -- at least one of the pair shall be present -- }
2319 Also implement the PEM functions to read and write certificate
2320 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2322 This needed to be defined, mostly for the sake of the LDAP
2323 attribute crossCertificatePair, but may prove useful elsewhere as
2327 *) Make it possible to inhibit symlinking of shared libraries in
2328 Makefile.shared, for Cygwin's sake.
2331 *) Extend the BIGNUM API by creating a function
2332 void BN_set_negative(BIGNUM *a, int neg);
2333 and a macro that behave like
2334 int BN_is_negative(const BIGNUM *a);
2336 to avoid the need to access 'a->neg' directly in applications.
2339 *) Implement fast modular reduction for pseudo-Mersenne primes
2340 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2341 EC_GROUP_new_curve_GFp() will now automatically use this
2343 [Nils Larsch <nla@trustcenter.de>]
2345 *) Add new lock type (CRYPTO_LOCK_BN).
2348 *) Change the ENGINE framework to automatically load engines
2349 dynamically from specific directories unless they could be
2350 found to already be built in or loaded. Move all the
2351 current engines except for the cryptodev one to a new
2353 The engines in engines/ are built as shared libraries if
2354 the "shared" options was given to ./Configure or ./config.
2355 Otherwise, they are inserted in libcrypto.a.
2356 /usr/local/ssl/engines is the default directory for dynamic
2357 engines, but that can be overriden at configure time through
2358 the usual use of --prefix and/or --openssldir, and at run
2359 time with the environment variable OPENSSL_ENGINES.
2360 [Geoff Thorpe and Richard Levitte]
2362 *) Add Makefile.shared, a helper makefile to build shared
2363 libraries. Addapt Makefile.org.
2366 *) Add version info to Win32 DLLs.
2367 [Peter 'Luna' Runestig" <peter@runestig.com>]
2369 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2370 can be added using this API to created arbitrary PKCS#12
2371 files while avoiding the low level API.
2373 New options to PKCS12_create(), key or cert can be NULL and
2374 will then be omitted from the output file. The encryption
2375 algorithm NIDs can be set to -1 for no encryption, the mac
2376 iteration count can be set to 0 to omit the mac.
2378 Enhance pkcs12 utility by making the -nokeys and -nocerts
2379 options work when creating a PKCS#12 file. New option -nomac
2380 to omit the mac, NONE can be set for an encryption algorithm.
2381 New code is modified to use the enhanced PKCS12_create()
2382 instead of the low level API.
2385 *) Extend ASN1 encoder to support indefinite length constructed
2386 encoding. This can output sequences tags and octet strings in
2387 this form. Modify pk7_asn1.c to support indefinite length
2388 encoding. This is experimental and needs additional code to
2389 be useful, such as an ASN1 bio and some enhanced streaming
2392 Extend template encode functionality so that tagging is passed
2393 down to the template encoder.
2396 *) Let 'openssl req' fail if an argument to '-newkey' is not
2397 recognized instead of using RSA as a default.
2400 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2401 As these are not official, they are not included in "ALL";
2402 the "ECCdraft" ciphersuite group alias can be used to select them.
2403 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2405 *) Add ECDH engine support.
2406 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2408 *) Add ECDH in new directory crypto/ecdh/.
2409 [Douglas Stebila (Sun Microsystems Laboratories)]
2411 *) Let BN_rand_range() abort with an error after 100 iterations
2412 without success (which indicates a broken PRNG).
2415 *) Change BN_mod_sqrt() so that it verifies that the input value
2416 is really the square of the return value. (Previously,
2417 BN_mod_sqrt would show GIGO behaviour.)
2420 *) Add named elliptic curves over binary fields from X9.62, SECG,
2421 and WAP/WTLS; add OIDs that were still missing.
2423 [Sheueling Chang Shantz and Douglas Stebila
2424 (Sun Microsystems Laboratories)]
2426 *) Extend the EC library for elliptic curves over binary fields
2427 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2430 EC_GF2m_simple_method
2434 EC_GROUP_new_curve_GF2m
2435 EC_GROUP_set_curve_GF2m
2436 EC_GROUP_get_curve_GF2m
2437 EC_POINT_set_affine_coordinates_GF2m
2438 EC_POINT_get_affine_coordinates_GF2m
2439 EC_POINT_set_compressed_coordinates_GF2m
2441 Point compression for binary fields is disabled by default for
2442 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2445 As binary polynomials are represented as BIGNUMs, various members
2446 of the EC_GROUP and EC_POINT data structures can be shared
2447 between the implementations for prime fields and binary fields;
2448 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2449 are essentially identical to their ..._GFp counterparts.
2450 (For simplicity, the '..._GFp' prefix has been dropped from
2451 various internal method names.)
2453 An internal 'field_div' method (similar to 'field_mul' and
2454 'field_sqr') has been added; this is used only for binary fields.
2456 [Sheueling Chang Shantz and Douglas Stebila
2457 (Sun Microsystems Laboratories)]
2459 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2460 through methods ('mul', 'precompute_mult').
2462 The generic implementations (now internally called 'ec_wNAF_mul'
2463 and 'ec_wNAF_precomputed_mult') remain the default if these
2464 methods are undefined.
2466 [Sheueling Chang Shantz and Douglas Stebila
2467 (Sun Microsystems Laboratories)]
2469 *) New function EC_GROUP_get_degree, which is defined through
2470 EC_METHOD. For curves over prime fields, this returns the bit
2471 length of the modulus.
2473 [Sheueling Chang Shantz and Douglas Stebila
2474 (Sun Microsystems Laboratories)]
2476 *) New functions EC_GROUP_dup, EC_POINT_dup.
2477 (These simply call ..._new and ..._copy).
2479 [Sheueling Chang Shantz and Douglas Stebila
2480 (Sun Microsystems Laboratories)]
2482 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2483 Polynomials are represented as BIGNUMs (where the sign bit is not
2484 used) in the following functions [macros]:
2487 BN_GF2m_sub [= BN_GF2m_add]
2488 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2489 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2490 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2492 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2493 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2494 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2495 BN_GF2m_cmp [= BN_ucmp]
2497 (Note that only the 'mod' functions are actually for fields GF(2^m).
2498 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2500 For some functions, an the irreducible polynomial defining a
2501 field can be given as an 'unsigned int[]' with strictly
2502 decreasing elements giving the indices of those bits that are set;
2503 i.e., p[] represents the polynomial
2504 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2506 p[0] > p[1] > ... > p[k] = 0.
2507 This applies to the following functions:
2512 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2513 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2515 BN_GF2m_mod_sqrt_arr
2516 BN_GF2m_mod_solve_quad_arr
2520 Conversion can be performed by the following functions:
2525 bntest.c has additional tests for binary polynomial arithmetic.
2527 Two implementations for BN_GF2m_mod_div() are available.
2528 The default algorithm simply uses BN_GF2m_mod_inv() and
2529 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2530 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2531 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2533 [Sheueling Chang Shantz and Douglas Stebila
2534 (Sun Microsystems Laboratories)]
2536 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2537 functionality is disabled at compile-time.
2538 [Douglas Stebila <douglas.stebila@sun.com>]
2540 *) Change default behaviour of 'openssl asn1parse' so that more
2541 information is visible when viewing, e.g., a certificate:
2543 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2544 mode the content of non-printable OCTET STRINGs is output in a
2545 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2546 avoid the appearance of a printable string.
2547 [Nils Larsch <nla@trustcenter.de>]
2549 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2551 EC_GROUP_set_asn1_flag()
2552 EC_GROUP_get_asn1_flag()
2553 EC_GROUP_set_point_conversion_form()
2554 EC_GROUP_get_point_conversion_form()
2555 These control ASN1 encoding details:
2556 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2557 has been set to OPENSSL_EC_NAMED_CURVE.
2558 - Points are encoded in uncompressed form by default; options for
2559 asn1_for are as for point2oct, namely
2560 POINT_CONVERSION_COMPRESSED
2561 POINT_CONVERSION_UNCOMPRESSED
2562 POINT_CONVERSION_HYBRID
2564 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2567 EC_GROUP_get0_seed()
2568 EC_GROUP_get_seed_len()
2569 This is used only for ASN1 purposes (so far).
2570 [Nils Larsch <nla@trustcenter.de>]
2572 *) Add 'field_type' member to EC_METHOD, which holds the NID
2573 of the appropriate field type OID. The new function
2574 EC_METHOD_get_field_type() returns this value.
2575 [Nils Larsch <nla@trustcenter.de>]
2580 EC_POINT_point2hex()
2581 EC_POINT_hex2point()
2582 providing useful interfaces to EC_POINT_point2oct() and
2583 EC_POINT_oct2point().
2584 [Nils Larsch <nla@trustcenter.de>]
2586 *) Change internals of the EC library so that the functions
2587 EC_GROUP_set_generator()
2588 EC_GROUP_get_generator()
2589 EC_GROUP_get_order()
2590 EC_GROUP_get_cofactor()
2591 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2592 to methods, which would lead to unnecessary code duplication when
2593 adding different types of curves.
2594 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2596 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2597 arithmetic, and such that modified wNAFs are generated
2598 (which avoid length expansion in many cases).
2601 *) Add a function EC_GROUP_check_discriminant() (defined via
2602 EC_METHOD) that verifies that the curve discriminant is non-zero.
2604 Add a function EC_GROUP_check() that makes some sanity tests
2605 on a EC_GROUP, its generator and order. This includes
2606 EC_GROUP_check_discriminant().
2607 [Nils Larsch <nla@trustcenter.de>]
2609 *) Add ECDSA in new directory crypto/ecdsa/.
2611 Add applications 'openssl ecparam' and 'openssl ecdsa'
2612 (these are based on 'openssl dsaparam' and 'openssl dsa').
2614 ECDSA support is also included in various other files across the
2615 library. Most notably,
2616 - 'openssl req' now has a '-newkey ecdsa:file' option;
2617 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2618 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2619 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2620 them suitable for ECDSA where domain parameters must be
2621 extracted before the specific public key;
2622 - ECDSA engine support has been added.
2623 [Nils Larsch <nla@trustcenter.de>]
2625 *) Include some named elliptic curves, and add OIDs from X9.62,
2626 SECG, and WAP/WTLS. Each curve can be obtained from the new
2628 EC_GROUP_new_by_curve_name(),
2629 and the list of available named curves can be obtained with
2630 EC_get_builtin_curves().
2631 Also add a 'curve_name' member to EC_GROUP objects, which can be
2633 EC_GROUP_set_curve_name()
2634 EC_GROUP_get_curve_name()
2635 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2637 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2638 was actually never needed) and in BN_mul(). The removal in BN_mul()
2639 required a small change in bn_mul_part_recursive() and the addition
2640 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2641 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2642 bn_sub_words() and bn_add_words() except they take arrays with
2646 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2648 *) Cleanse PEM buffers before freeing them since they may contain
2650 [Benjamin Bennett <ben@psc.edu>]
2652 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2653 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2654 authentication-only ciphersuites.
2657 *) Since AES128 and AES256 share a single mask bit in the logic of
2658 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2659 kludge to work properly if AES128 is available and AES256 isn't.
2662 *) Expand security boundary to match 1.1.1 module.
2665 *) Remove redundant features: hash file source, editing of test vectors
2666 modify fipsld to use external fips_premain.c signature.
2669 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2670 run algorithm test programs.
2673 *) Make algorithm test programs more tolerant of whitespace.
2676 *) Have SSL/TLS server implementation tolerate "mismatched" record
2677 protocol version while receiving ClientHello even if the
2678 ClientHello is fragmented. (The server can't insist on the
2679 particular protocol version it has chosen before the ServerHello
2680 message has informed the client about his choice.)
2683 *) Load error codes if they are not already present instead of using a
2684 static variable. This allows them to be cleanly unloaded and reloaded.
2687 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2689 *) Introduce limits to prevent malicious keys being able to
2690 cause a denial of service. (CVE-2006-2940)
2691 [Steve Henson, Bodo Moeller]
2693 *) Fix ASN.1 parsing of certain invalid structures that can result
2694 in a denial of service. (CVE-2006-2937) [Steve Henson]
2696 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2697 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2699 *) Fix SSL client code which could crash if connecting to a
2700 malicious SSLv2 server. (CVE-2006-4343)
2701 [Tavis Ormandy and Will Drewry, Google Security Team]
2703 *) Change ciphersuite string processing so that an explicit
2704 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2705 will no longer include "AES128-SHA"), and any other similar
2706 ciphersuite (same bitmap) from *other* protocol versions (so that
2707 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2708 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2709 changes from 0.9.8b and 0.9.8d.
2712 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2714 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2715 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2717 *) Change the Unix randomness entropy gathering to use poll() when
2718 possible instead of select(), since the latter has some
2719 undesirable limitations.
2720 [Darryl Miles via Richard Levitte and Bodo Moeller]
2722 *) Disable rogue ciphersuites:
2724 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2725 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2726 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2728 The latter two were purportedly from
2729 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2732 Also deactive the remaining ciphersuites from
2733 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2734 unofficial, and the ID has long expired.
2737 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2738 dual-core machines) and other potential thread-safety issues.
2741 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2743 *) Adapt fipsld and the build system to link against the validated FIPS
2744 module in FIPS mode.
2747 *) Fixes for VC++ 2005 build under Windows.
2750 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2751 from a Windows bash shell such as MSYS. It is autodetected from the
2752 "config" script when run from a VC++ environment. Modify standard VC++
2753 build to use fipscanister.o from the GNU make build.
2756 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2758 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2759 The value now differs depending on if you build for FIPS or not.
2760 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2761 safely run with a non-FIPSed libcrypto, as it may crash because of
2762 the difference induced by this change.
2765 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2767 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2768 (part of SSL_OP_ALL). This option used to disable the
2769 countermeasure against man-in-the-middle protocol-version
2770 rollback in the SSL 2.0 server implementation, which is a bad
2771 idea. (CVE-2005-2969)
2773 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2774 for Information Security, National Institute of Advanced Industrial
2775 Science and Technology [AIST], Japan)]
2777 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2778 mainly for FIPS compliance and not fully integrated at this stage.
2781 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2782 the exponentiation using a fixed-length exponent. (Otherwise,
2783 the information leaked through timing could expose the secret key
2784 after many signatures; cf. Bleichenbacher's attack on DSA with
2788 *) Make a new fixed-window mod_exp implementation the default for
2789 RSA, DSA, and DH private-key operations so that the sequence of
2790 squares and multiplies and the memory access pattern are
2791 independent of the particular secret key. This will mitigate
2792 cache-timing and potential related attacks.
2794 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2795 and this is automatically used by BN_mod_exp_mont() if the new flag
2796 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2797 will use this BN flag for private exponents unless the flag
2798 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2799 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2801 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2803 *) Change the client implementation for SSLv23_method() and
2804 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2805 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2806 (Previously, the SSL 2.0 backwards compatible Client Hello
2807 message format would be used even with SSL_OP_NO_SSLv2.)
2810 *) Add support for smime-type MIME parameter in S/MIME messages which some
2814 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2815 a threadsafe manner. Modify rsa code to use new function and add calls
2816 to dsa and dh code (which had race conditions before).
2819 *) Include the fixed error library code in the C error file definitions
2820 instead of fixing them up at runtime. This keeps the error code
2821 structures constant.
2824 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2826 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2829 *) Fixes for newer kerberos headers. NB: the casts are needed because
2830 the 'length' field is signed on one version and unsigned on another
2831 with no (?) obvious way to tell the difference, without these VC++
2832 complains. Also the "definition" of FAR (blank) is no longer included
2833 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2834 some needed definitions.
2837 *) Undo Cygwin change.
2840 *) Added support for proxy certificates according to RFC 3820.
2841 Because they may be a security thread to unaware applications,
2842 they must be explicitely allowed in run-time. See
2843 docs/HOWTO/proxy_certificates.txt for further information.
2846 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2848 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2849 server and client random values. Previously
2850 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2851 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2853 This change has negligible security impact because:
2855 1. Server and client random values still have 24 bytes of pseudo random
2858 2. Server and client random values are sent in the clear in the initial
2861 3. The master secret is derived using the premaster secret (48 bytes in
2862 size for static RSA ciphersuites) as well as client server and random
2865 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2868 [Stephen Henson, reported by UK NISCC]
2870 *) Use Windows randomness collection on Cygwin.
2873 *) Fix hang in EGD/PRNGD query when communication socket is closed
2874 prematurely by EGD/PRNGD.
2875 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2877 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2880 *) Back-port of selected performance improvements from development
2881 branch, as well as improved support for PowerPC platforms.
2884 *) Add lots of checks for memory allocation failure, error codes to indicate
2885 failure and freeing up memory if a failure occurs.
2886 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2888 *) Add new -passin argument to dgst.
2891 *) Perform some character comparisons of different types in X509_NAME_cmp:
2892 this is needed for some certificates that reencode DNs into UTF8Strings
2893 (in violation of RFC3280) and can't or wont issue name rollover
2897 *) Make an explicit check during certificate validation to see that
2898 the CA setting in each certificate on the chain is correct. As a
2899 side effect always do the following basic checks on extensions,
2900 not just when there's an associated purpose to the check:
2902 - if there is an unhandled critical extension (unless the user
2903 has chosen to ignore this fault)
2904 - if the path length has been exceeded (if one is set at all)
2905 - that certain extensions fit the associated purpose (if one has
2909 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2911 *) Avoid a race condition when CRLs are checked in a multi threaded
2912 environment. This would happen due to the reordering of the revoked
2913 entries during signature checking and serial number lookup. Now the
2914 encoding is cached and the serial number sort performed under a lock.
2915 Add new STACK function sk_is_sorted().
2918 *) Add Delta CRL to the extension code.
2921 *) Various fixes to s3_pkt.c so alerts are sent properly.
2922 [David Holmes <d.holmes@f5.com>]
2924 *) Reduce the chances of duplicate issuer name and serial numbers (in
2925 violation of RFC3280) using the OpenSSL certificate creation utilities.
2926 This is done by creating a random 64 bit value for the initial serial
2927 number when a serial number file is created or when a self signed
2928 certificate is created using 'openssl req -x509'. The initial serial
2929 number file is created using 'openssl x509 -next_serial' in CA.pl
2930 rather than being initialized to 1.
2933 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
2935 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2936 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
2937 [Joe Orton, Steve Henson]
2939 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
2941 [Joe Orton, Steve Henson]
2943 *) Make it possible to have multiple active certificates with the same
2944 subject in the CA index file. This is done only if the keyword
2945 'unique_subject' is set to 'no' in the main CA section (default
2946 if 'CA_default') of the configuration file. The value is saved
2947 with the database itself in a separate index attribute file,
2948 named like the index file with '.attr' appended to the name.
2951 *) X509 verify fixes. Disable broken certificate workarounds when
2952 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
2953 keyUsage extension present. Don't accept CRLs with unhandled critical
2954 extensions: since verify currently doesn't process CRL extensions this
2955 rejects a CRL with *any* critical extensions. Add new verify error codes
2959 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
2960 A clarification of RFC2560 will require the use of OCTET STRINGs and
2961 some implementations cannot handle the current raw format. Since OpenSSL
2962 copies and compares OCSP nonces as opaque blobs without any attempt at
2963 parsing them this should not create any compatibility issues.
2966 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
2967 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
2968 this HMAC (and other) operations are several times slower than OpenSSL
2972 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
2973 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2975 *) Use the correct content when signing type "other".
2978 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
2980 *) Fix various bugs revealed by running the NISCC test suite:
2982 Stop out of bounds reads in the ASN1 code when presented with
2983 invalid tags (CVE-2003-0543 and CVE-2003-0544).
2985 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
2987 If verify callback ignores invalid public key errors don't try to check
2988 certificate signature with the NULL public key.
2992 *) New -ignore_err option in ocsp application to stop the server
2993 exiting on the first error in a request.
2996 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2997 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3001 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3002 extra data after the compression methods not only for TLS 1.0
3003 but also for SSL 3.0 (as required by the specification).
3004 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3006 *) Change X509_certificate_type() to mark the key as exported/exportable
3007 when it's 512 *bits* long, not 512 bytes.
3010 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3011 blocks during encryption.
3014 *) Various fixes to base64 BIO and non blocking I/O. On write
3015 flushes were not handled properly if the BIO retried. On read
3016 data was not being buffered properly and had various logic bugs.
3017 This also affects blocking I/O when the data being decoded is a
3021 *) Various S/MIME bugfixes and compatibility changes:
3022 output correct application/pkcs7 MIME type if
3023 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3024 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3025 of files as .eml work). Correctly handle very long lines in MIME
3029 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3031 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3032 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3033 a protocol version number mismatch like a decryption error
3034 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3037 *) Turn on RSA blinding by default in the default implementation
3038 to avoid a timing attack. Applications that don't want it can call
3039 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3040 They would be ill-advised to do so in most cases.
3041 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3043 *) Change RSA blinding code so that it works when the PRNG is not
3044 seeded (in this case, the secret RSA exponent is abused as
3045 an unpredictable seed -- if it is not unpredictable, there
3046 is no point in blinding anyway). Make RSA blinding thread-safe
3047 by remembering the creator's thread ID in rsa->blinding and
3048 having all other threads use local one-time blinding factors
3049 (this requires more computation than sharing rsa->blinding, but
3050 avoids excessive locking; and if an RSA object is not shared
3051 between threads, blinding will still be very fast).
3054 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3055 ENGINE as defaults for all supported algorithms irrespective of
3056 the 'flags' parameter. 'flags' is now honoured, so applications
3057 should make sure they are passing it correctly.
3060 *) Target "mingw" now allows native Windows code to be generated in
3061 the Cygwin environment as well as with the MinGW compiler.
3064 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3066 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3067 via timing by performing a MAC computation even if incorrrect
3068 block cipher padding has been found. This is a countermeasure
3069 against active attacks where the attacker has to distinguish
3070 between bad padding and a MAC verification error. (CVE-2003-0078)
3072 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3073 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3074 Martin Vuagnoux (EPFL, Ilion)]
3076 *) Make the no-err option work as intended. The intention with no-err
3077 is not to have the whole error stack handling routines removed from
3078 libcrypto, it's only intended to remove all the function name and
3079 reason texts, thereby removing some of the footprint that may not
3080 be interesting if those errors aren't displayed anyway.
3082 NOTE: it's still possible for any application or module to have it's
3083 own set of error texts inserted. The routines are there, just not
3084 used by default when no-err is given.
3087 *) Add support for FreeBSD on IA64.
3088 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3090 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3091 Kerberos function mit_des_cbc_cksum(). Before this change,
3092 the value returned by DES_cbc_cksum() was like the one from
3093 mit_des_cbc_cksum(), except the bytes were swapped.
3094 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3096 *) Allow an application to disable the automatic SSL chain building.
3097 Before this a rather primitive chain build was always performed in
3098 ssl3_output_cert_chain(): an application had no way to send the
3099 correct chain if the automatic operation produced an incorrect result.
3101 Now the chain builder is disabled if either:
3103 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3105 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3107 The reasoning behind this is that an application would not want the
3108 auto chain building to take place if extra chain certificates are
3109 present and it might also want a means of sending no additional
3110 certificates (for example the chain has two certificates and the
3114 *) Add the possibility to build without the ENGINE framework.
3115 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3117 *) Under Win32 gmtime() can return NULL: check return value in
3118 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3121 *) DSA routines: under certain error conditions uninitialized BN objects
3122 could be freed. Solution: make sure initialization is performed early
3123 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3124 Nils Larsch <nla@trustcenter.de> via PR#459)
3127 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3128 checked on reconnect on the client side, therefore session resumption
3129 could still fail with a "ssl session id is different" error. This
3130 behaviour is masked when SSL_OP_ALL is used due to
3131 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3132 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3133 followup to PR #377.
3136 *) IA-32 assembler support enhancements: unified ELF targets, support
3137 for SCO/Caldera platforms, fix for Cygwin shared build.
3140 *) Add support for FreeBSD on sparc64. As a consequence, support for
3141 FreeBSD on non-x86 processors is separate from x86 processors on
3142 the config script, much like the NetBSD support.
3143 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3145 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3147 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3150 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3151 code (06) was taken as the first octet of the session ID and the last
3152 octet was ignored consequently. As a result SSLv2 client side session
3153 caching could not have worked due to the session ID mismatch between
3155 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3159 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3160 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3164 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3165 seems that in spite of existing for more than a year, many application
3166 author have done nothing to provide the necessary callbacks, which
3167 means that this particular engine will not work properly anywhere.
3168 This is a very unfortunate situation which forces us, in the name
3169 of usability, to give the hw_ncipher.c a static lock, which is part
3171 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3172 appear in 0.9.8 or later. We EXPECT application authors to have
3173 dealt properly with this when 0.9.8 is released (unless we actually
3174 make such changes in the libcrypto locking code that changes will
3175 have to be made anyway).
3178 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3179 octets have been read, EOF or an error occurs. Without this change
3180 some truncated ASN1 structures will not produce an error.
3183 *) Disable Heimdal support, since it hasn't been fully implemented.
3184 Still give the possibility to force the use of Heimdal, but with
3185 warnings and a request that patches get sent to openssl-dev.
3188 *) Add the VC-CE target, introduce the WINCE sysname, and add
3189 INSTALL.WCE and appropriate conditionals to make it build.
3190 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3192 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3193 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3194 edit numbers of the version.
3195 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3197 *) Introduce safe string copy and catenation functions
3198 (BUF_strlcpy() and BUF_strlcat()).
3199 [Ben Laurie (CHATS) and Richard Levitte]
3201 *) Avoid using fixed-size buffers for one-line DNs.
3202 [Ben Laurie (CHATS)]
3204 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3205 resizing buffers containing secrets, and use where appropriate.
3206 [Ben Laurie (CHATS)]
3208 *) Avoid using fixed size buffers for configuration file location.
3209 [Ben Laurie (CHATS)]
3211 *) Avoid filename truncation for various CA files.
3212 [Ben Laurie (CHATS)]
3214 *) Use sizeof in preference to magic numbers.
3215 [Ben Laurie (CHATS)]
3217 *) Avoid filename truncation in cert requests.
3218 [Ben Laurie (CHATS)]
3220 *) Add assertions to check for (supposedly impossible) buffer
3222 [Ben Laurie (CHATS)]
3224 *) Don't cache truncated DNS entries in the local cache (this could
3225 potentially lead to a spoofing attack).
3226 [Ben Laurie (CHATS)]
3228 *) Fix various buffers to be large enough for hex/decimal
3229 representations in a platform independent manner.
3230 [Ben Laurie (CHATS)]
3232 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3233 resizing buffers containing secrets, and use where appropriate.
3234 [Ben Laurie (CHATS)]
3236 *) Add BIO_indent() to avoid much slightly worrying code to do
3238 [Ben Laurie (CHATS)]
3240 *) Convert sprintf()/BIO_puts() to BIO_printf().
3241 [Ben Laurie (CHATS)]
3243 *) buffer_gets() could terminate with the buffer only half
3245 [Ben Laurie (CHATS)]
3247 *) Add assertions to prevent user-supplied crypto functions from
3248 overflowing internal buffers by having large block sizes, etc.
3249 [Ben Laurie (CHATS)]
3251 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3253 [Ben Laurie (CHATS)]
3255 *) Eliminate unused copy of key in RC4.
3256 [Ben Laurie (CHATS)]
3258 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3259 [Ben Laurie (CHATS)]
3261 *) Fix off-by-one error in EGD path.
3262 [Ben Laurie (CHATS)]
3264 *) If RANDFILE path is too long, ignore instead of truncating.
3265 [Ben Laurie (CHATS)]
3267 *) Eliminate unused and incorrectly sized X.509 structure
3269 [Ben Laurie (CHATS)]
3271 *) Eliminate unused and dangerous function knumber().
3272 [Ben Laurie (CHATS)]
3274 *) Eliminate unused and dangerous structure, KSSL_ERR.
3275 [Ben Laurie (CHATS)]
3277 *) Protect against overlong session ID context length in an encoded
3278 session object. Since these are local, this does not appear to be
3280 [Ben Laurie (CHATS)]
3282 *) Change from security patch (see 0.9.6e below) that did not affect
3283 the 0.9.6 release series:
3285 Remote buffer overflow in SSL3 protocol - an attacker could
3286 supply an oversized master key in Kerberos-enabled versions.
3288 [Ben Laurie (CHATS)]
3290 *) Change the SSL kerb5 codes to match RFC 2712.
3293 *) Make -nameopt work fully for req and add -reqopt switch.
3294 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3296 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3297 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3299 *) Make sure tests can be performed even if the corresponding algorithms
3300 have been removed entirely. This was also the last step to make
3301 OpenSSL compilable with DJGPP under all reasonable conditions.
3302 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3304 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3305 to allow version independent disabling of normally unselected ciphers,
3306 which may be activated as a side-effect of selecting a single cipher.
3308 (E.g., cipher list string "RSA" enables ciphersuites that are left
3309 out of "ALL" because they do not provide symmetric encryption.
3310 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3311 [Lutz Jaenicke, Bodo Moeller]
3313 *) Add appropriate support for separate platform-dependent build
3314 directories. The recommended way to make a platform-dependent
3315 build directory is the following (tested on Linux), maybe with
3318 # Place yourself outside of the OpenSSL source tree. In
3319 # this example, the environment variable OPENSSL_SOURCE
3320 # is assumed to contain the absolute OpenSSL source directory.
3321 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3322 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3323 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3324 mkdir -p `dirname $F`
3325 ln -s $OPENSSL_SOURCE/$F $F
3328 To be absolutely sure not to disturb the source tree, a "make clean"
3329 is a good thing. If it isn't successfull, don't worry about it,
3330 it probably means the source directory is very clean.
3333 *) Make sure any ENGINE control commands make local copies of string
3334 pointers passed to them whenever necessary. Otherwise it is possible
3335 the caller may have overwritten (or deallocated) the original string
3336 data when a later ENGINE operation tries to use the stored values.
3337 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3339 *) Improve diagnostics in file reading and command-line digests.
3340 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3342 *) Add AES modes CFB and OFB to the object database. Correct an
3343 error in AES-CFB decryption.
3346 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3347 allows existing EVP_CIPHER_CTX structures to be reused after
3348 calling EVP_*Final(). This behaviour is used by encryption
3349 BIOs and some applications. This has the side effect that
3350 applications must explicitly clean up cipher contexts with
3351 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3354 *) Check the values of dna and dnb in bn_mul_recursive before calling
3355 bn_mul_comba (a non zero value means the a or b arrays do not contain
3356 n2 elements) and fallback to bn_mul_normal if either is not zero.
3359 *) Fix escaping of non-ASCII characters when using the -subj option
3360 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3363 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3364 form for "surname", serialNumber has no short form.
3365 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3366 therefore remove "mail" short name for "internet 7".
3367 The OID for unique identifiers in X509 certificates is
3368 x500UniqueIdentifier, not uniqueIdentifier.
3369 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3372 *) Add an "init" command to the ENGINE config module and auto initialize
3373 ENGINEs. Without any "init" command the ENGINE will be initialized
3374 after all ctrl commands have been executed on it. If init=1 the
3375 ENGINE is initailized at that point (ctrls before that point are run
3376 on the uninitialized ENGINE and after on the initialized one). If
3377 init=0 then the ENGINE will not be iniatialized at all.
3380 *) Fix the 'app_verify_callback' interface so that the user-defined
3381 argument is actually passed to the callback: In the
3382 SSL_CTX_set_cert_verify_callback() prototype, the callback
3383 declaration has been changed from
3386 int (*cb)(X509_STORE_CTX *,void *);
3387 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3388 i=s->ctx->app_verify_callback(&ctx)
3389 has been changed into
3390 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3392 To update applications using SSL_CTX_set_cert_verify_callback(),
3393 a dummy argument can be added to their callback functions.
3394 [D. K. Smetters <smetters@parc.xerox.com>]
3396 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3397 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3399 *) Add and OPENSSL_LOAD_CONF define which will cause
3400 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3401 This allows older applications to transparently support certain
3402 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3403 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3404 load the config file and OPENSSL_add_all_algorithms_conf() which will
3405 always load it have also been added.
3408 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3409 Adjust NIDs and EVP layer.
3410 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3412 *) Config modules support in openssl utility.
3414 Most commands now load modules from the config file,
3415 though in a few (such as version) this isn't done
3416 because it couldn't be used for anything.
3418 In the case of ca and req the config file used is
3419 the same as the utility itself: that is the -config
3420 command line option can be used to specify an
3424 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3425 use "openssl_conf" if filename is NULL use default openssl config file.
3428 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3429 config section name. Add a new flag to tolerate a missing config file
3430 and move code to CONF_modules_load_file().
3433 *) Support for crypto accelerator cards from Accelerated Encryption
3434 Processing, www.aep.ie. (Use engine 'aep')
3435 The support was copied from 0.9.6c [engine] and adapted/corrected
3436 to work with the new engine framework.
3437 [AEP Inc. and Richard Levitte]
3439 *) Support for SureWare crypto accelerator cards from Baltimore
3440 Technologies. (Use engine 'sureware')
3441 The support was copied from 0.9.6c [engine] and adapted
3442 to work with the new engine framework.
3445 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3446 make the newer ENGINE framework commands for the CHIL engine work.
3447 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3449 *) Make it possible to produce shared libraries on ReliantUNIX.
3450 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3452 *) Add the configuration target debug-linux-ppro.
3453 Make 'openssl rsa' use the general key loading routines
3454 implemented in apps.c, and make those routines able to
3455 handle the key format FORMAT_NETSCAPE and the variant
3457 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3459 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3460 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3462 *) Add -keyform to rsautl, and document -engine.
3463 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3465 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3466 BIO_R_NO_SUCH_FILE error code rather than the generic
3467 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3470 *) Add new functions
3472 ERR_peek_last_error_line
3473 ERR_peek_last_error_line_data.
3474 These are similar to
3477 ERR_peek_error_line_data,
3478 but report on the latest error recorded rather than the first one
3479 still in the error queue.
3480 [Ben Laurie, Bodo Moeller]
3482 *) default_algorithms option in ENGINE config module. This allows things
3484 default_algorithms = ALL
3485 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3488 *) Prelminary ENGINE config module.
3491 *) New experimental application configuration code.
3494 *) Change the AES code to follow the same name structure as all other
3495 symmetric ciphers, and behave the same way. Move everything to
3496 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3497 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3499 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3500 [Ben Laurie and Theo de Raadt]
3502 *) Add option to output public keys in req command.
3503 [Massimiliano Pala madwolf@openca.org]
3505 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3506 (up to about 10% better than before for P-192 and P-224).
3509 *) New functions/macros
3511 SSL_CTX_set_msg_callback(ctx, cb)
3512 SSL_CTX_set_msg_callback_arg(ctx, arg)
3513 SSL_set_msg_callback(ssl, cb)
3514 SSL_set_msg_callback_arg(ssl, arg)
3516 to request calling a callback function
3518 void cb(int write_p, int version, int content_type,
3519 const void *buf, size_t len, SSL *ssl, void *arg)
3521 whenever a protocol message has been completely received
3522 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3523 protocol version according to which the SSL library interprets
3524 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3525 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3526 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3527 specification (change_cipher_spec(20), alert(21), handshake(22)).
3528 'buf' and 'len' point to the actual message, 'ssl' to the
3529 SSL object, and 'arg' is the application-defined value set by
3530 SSL[_CTX]_set_msg_callback_arg().
3532 'openssl s_client' and 'openssl s_server' have new '-msg' options
3533 to enable a callback that displays all protocol messages.
3536 *) Change the shared library support so shared libraries are built as
3537 soon as the corresponding static library is finished, and thereby get
3538 openssl and the test programs linked against the shared library.
3539 This still only happens when the keyword "shard" has been given to
3540 the configuration scripts.
3542 NOTE: shared library support is still an experimental thing, and
3543 backward binary compatibility is still not guaranteed.
3544 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3546 *) Add support for Subject Information Access extension.
3547 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3549 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3550 additional bytes when new memory had to be allocated, not just
3551 when reusing an existing buffer.
3554 *) New command line and configuration option 'utf8' for the req command.
3555 This allows field values to be specified as UTF8 strings.
3558 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3559 runs for the former and machine-readable output for the latter.
3562 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3563 of the e-mail address in the DN (i.e., it will go into a certificate
3564 extension only). The new configuration file option 'email_in_dn = no'
3565 has the same effect.
3566 [Massimiliano Pala madwolf@openca.org]
3568 *) Change all functions with names starting with des_ to be starting
3569 with DES_ instead. Add wrappers that are compatible with libdes,
3570 but are named _ossl_old_des_*. Finally, add macros that map the
3571 des_* symbols to the corresponding _ossl_old_des_* if libdes
3572 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3573 desired, the des_* symbols will be mapped to DES_*, with one
3576 Since we provide two compatibility mappings, the user needs to
3577 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3578 compatibility is desired. The default (i.e., when that macro
3579 isn't defined) is OpenSSL 0.9.6c compatibility.
3581 There are also macros that enable and disable the support of old
3582 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3583 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3584 are defined, the default will apply: to support the old des routines.
3586 In either case, one must include openssl/des.h to get the correct
3587 definitions. Do not try to just include openssl/des_old.h, that
3590 NOTE: This is a major break of an old API into a new one. Software
3591 authors are encouraged to switch to the DES_ style functions. Some
3592 time in the future, des_old.h and the libdes compatibility functions
3593 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3594 default), and then completely removed.
3597 *) Test for certificates which contain unsupported critical extensions.
3598 If such a certificate is found during a verify operation it is
3599 rejected by default: this behaviour can be overridden by either
3600 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3601 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3602 X509_supported_extension() has also been added which returns 1 if a
3603 particular extension is supported.
3606 *) Modify the behaviour of EVP cipher functions in similar way to digests
3607 to retain compatibility with existing code.
3610 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3611 compatibility with existing code. In particular the 'ctx' parameter does
3612 not have to be to be initialized before the call to EVP_DigestInit() and
3613 it is tidied up after a call to EVP_DigestFinal(). New function
3614 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3615 EVP_MD_CTX_copy() changed to not require the destination to be
3616 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3617 requires the destination to be valid.
3619 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3620 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3623 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3624 so that complete 'Handshake' protocol structures are kept in memory
3625 instead of overwriting 'msg_type' and 'length' with 'body' data.
3628 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3629 [Massimo Santin via Richard Levitte]
3631 *) Major restructuring to the underlying ENGINE code. This includes
3632 reduction of linker bloat, separation of pure "ENGINE" manipulation
3633 (initialisation, etc) from functionality dealing with implementations
3634 of specific crypto iterfaces. This change also introduces integrated
3635 support for symmetric ciphers and digest implementations - so ENGINEs
3636 can now accelerate these by providing EVP_CIPHER and EVP_MD
3637 implementations of their own. This is detailed in crypto/engine/README
3638 as it couldn't be adequately described here. However, there are a few
3639 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3640 were changed in the original introduction of ENGINE code have now
3641 reverted back - the hooking from this code to ENGINE is now a good
3642 deal more passive and at run-time, operations deal directly with
3643 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3644 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3645 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3646 they were not being used by the framework as there is no concept of a
3647 BIGNUM_METHOD and they could not be generalised to the new
3648 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3649 ENGINE_cpy() has been removed as it cannot be consistently defined in
3653 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3656 *) Change mkdef.pl to sort symbols that get the same entry number,
3657 and make sure the automatically generated functions ERR_load_*
3658 become part of libeay.num as well.
3661 *) New function SSL_renegotiate_pending(). This returns true once
3662 renegotiation has been requested (either SSL_renegotiate() call
3663 or HelloRequest/ClientHello receveived from the peer) and becomes
3664 false once a handshake has been completed.
3665 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3666 sends a HelloRequest, but does not ensure that a handshake takes
3667 place. SSL_renegotiate_pending() is useful for checking if the
3668 client has followed the request.)
3671 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3672 By default, clients may request session resumption even during
3673 renegotiation (if session ID contexts permit); with this option,
3674 session resumption is possible only in the first handshake.
3676 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3677 more bits available for options that should not be part of
3678 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3681 *) Add some demos for certificate and certificate request creation.
3684 *) Make maximum certificate chain size accepted from the peer application
3685 settable (SSL*_get/set_max_cert_list()), as proposed by
3686 "Douglas E. Engert" <deengert@anl.gov>.
3689 *) Add support for shared libraries for Unixware-7
3690 (Boyd Lynn Gerber <gerberb@zenez.com>).
3693 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3694 be done prior to destruction. Use this to unload error strings from
3695 ENGINEs that load their own error strings. NB: This adds two new API
3696 functions to "get" and "set" this destroy handler in an ENGINE.
3699 *) Alter all existing ENGINE implementations (except "openssl" and
3700 "openbsd") to dynamically instantiate their own error strings. This
3701 makes them more flexible to be built both as statically-linked ENGINEs
3702 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3703 Also, add stub code to each that makes building them as self-contained
3704 shared-libraries easier (see README.ENGINE).
3707 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3708 implementations into applications that are completely implemented in
3709 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3710 commands that can be used to configure what shared-library to load and
3711 to control aspects of the way it is handled. Also, made an update to
3712 the README.ENGINE file that brings its information up-to-date and
3713 provides some information and instructions on the "dynamic" ENGINE
3714 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3717 *) Make it possible to unload ranges of ERR strings with a new
3718 "ERR_unload_strings" function.
3721 *) Add a copy() function to EVP_MD.
3724 *) Make EVP_MD routines take a context pointer instead of just the
3725 md_data void pointer.
3728 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3729 that the digest can only process a single chunk of data
3730 (typically because it is provided by a piece of
3731 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3732 is only going to provide a single chunk of data, and hence the
3733 framework needn't accumulate the data for oneshot drivers.
3736 *) As with "ERR", make it possible to replace the underlying "ex_data"
3737 functions. This change also alters the storage and management of global
3738 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3739 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3740 index counters. The API functions that use this state have been changed
3741 to take a "class_index" rather than pointers to the class's local STACK
3742 and counter, and there is now an API function to dynamically create new
3743 classes. This centralisation allows us to (a) plug a lot of the
3744 thread-safety problems that existed, and (b) makes it possible to clean
3745 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3746 such data would previously have always leaked in application code and
3747 workarounds were in place to make the memory debugging turn a blind eye
3748 to it. Application code that doesn't use this new function will still
3749 leak as before, but their memory debugging output will announce it now
3750 rather than letting it slide.
3752 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3753 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3754 has a return value to indicate success or failure.
3757 *) Make it possible to replace the underlying "ERR" functions such that the
3758 global state (2 LHASH tables and 2 locks) is only used by the "default"
3759 implementation. This change also adds two functions to "get" and "set"
3760 the implementation prior to it being automatically set the first time
3761 any other ERR function takes place. Ie. an application can call "get",
3762 pass the return value to a module it has just loaded, and that module
3763 can call its own "set" function using that value. This means the
3764 module's "ERR" operations will use (and modify) the error state in the
3765 application and not in its own statically linked copy of OpenSSL code.
3768 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3769 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3770 the operation, and provides a more encapsulated way for external code
3771 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3772 to use these functions rather than manually incrementing the counts.
3774 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3777 *) Add EVP test program.
3780 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3783 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3784 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3785 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3786 These allow a CRL to be built without having to access X509_CRL fields
3787 directly. Modify 'ca' application to use new functions.
3790 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3791 bug workarounds. Rollback attack detection is a security feature.
3792 The problem will only arise on OpenSSL servers when TLSv1 is not
3793 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
3794 Software authors not wanting to support TLSv1 will have special reasons
3795 for their choice and can explicitly enable this option.
3796 [Bodo Moeller, Lutz Jaenicke]
3798 *) Rationalise EVP so it can be extended: don't include a union of
3799 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
3800 (similar to those existing for EVP_CIPHER_CTX).
3805 EVP_MD_CTX_init(&md); /* new function call */
3806 EVP_DigestInit(&md, EVP_sha1());
3807 EVP_DigestUpdate(&md, in, len);
3808 EVP_DigestFinal(&md, out, NULL);
3809 EVP_MD_CTX_cleanup(&md); /* new function call */
3813 *) Make DES key schedule conform to the usual scheme, as well as
3814 correcting its structure. This means that calls to DES functions
3815 now have to pass a pointer to a des_key_schedule instead of a
3816 plain des_key_schedule (which was actually always a pointer
3819 des_key_schedule ks;
3821 des_set_key_checked(..., &ks);
3822 des_ncbc_encrypt(..., &ks, ...);
3824 (Note that a later change renames 'des_...' into 'DES_...'.)
3827 *) Initial reduction of linker bloat: the use of some functions, such as
3828 PEM causes large amounts of unused functions to be linked in due to
3829 poor organisation. For example pem_all.c contains every PEM function
3830 which has a knock on effect of linking in large amounts of (unused)
3831 ASN1 code. Grouping together similar functions and splitting unrelated
3832 functions prevents this.
3835 *) Cleanup of EVP macros.
3838 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
3839 correct _ecb suffix.
3842 *) Add initial OCSP responder support to ocsp application. The
3843 revocation information is handled using the text based index
3844 use by the ca application. The responder can either handle
3845 requests generated internally, supplied in files (for example
3846 via a CGI script) or using an internal minimal server.
3849 *) Add configuration choices to get zlib compression for TLS.
3852 *) Changes to Kerberos SSL for RFC 2712 compliance:
3853 1. Implemented real KerberosWrapper, instead of just using
3854 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
3855 2. Implemented optional authenticator field of KerberosWrapper.
3857 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
3858 and authenticator structs; see crypto/krb5/.
3860 Generalized Kerberos calls to support multiple Kerberos libraries.
3861 [Vern Staats <staatsvr@asc.hpc.mil>,
3862 Jeffrey Altman <jaltman@columbia.edu>
3863 via Richard Levitte]
3865 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
3866 already does with RSA. testdsa.h now has 'priv_key/pub_key'
3867 values for each of the key sizes rather than having just
3868 parameters (and 'speed' generating keys each time).
3871 *) Speed up EVP routines.
3874 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
3875 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
3876 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
3877 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
3879 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
3880 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
3881 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
3884 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
3886 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
3889 *) Added the OS2-EMX target.
3890 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
3892 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
3893 to support NCONF routines in extension code. New function CONF_set_nconf()
3894 to allow functions which take an NCONF to also handle the old LHASH
3895 structure: this means that the old CONF compatible routines can be
3896 retained (in particular wrt extensions) without having to duplicate the
3897 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
3900 *) Enhance the general user interface with mechanisms for inner control
3901 and with possibilities to have yes/no kind of prompts.
3904 *) Change all calls to low level digest routines in the library and
3905 applications to use EVP. Add missing calls to HMAC_cleanup() and
3906 don't assume HMAC_CTX can be copied using memcpy().
3907 [Verdon Walker <VWalker@novell.com>, Steve Henson]
3909 *) Add the possibility to control engines through control names but with
3910 arbitrary arguments instead of just a string.
3911 Change the key loaders to take a UI_METHOD instead of a callback
3912 function pointer. NOTE: this breaks binary compatibility with earlier
3913 versions of OpenSSL [engine].
3914 Adapt the nCipher code for these new conditions and add a card insertion
3918 *) Enhance the general user interface with mechanisms to better support
3919 dialog box interfaces, application-defined prompts, the possibility
3920 to use defaults (for example default passwords from somewhere else)
3921 and interrupts/cancellations.
3924 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
3925 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
3928 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
3929 tidy up some unnecessarily weird code in 'sk_new()').
3930 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
3932 *) Change the key loading routines for ENGINEs to use the same kind
3933 callback (pem_password_cb) as all other routines that need this
3937 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
3938 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
3939 than this minimum value is recommended.
3942 *) New random seeder for OpenVMS, using the system process statistics
3943 that are easily reachable.
3946 *) Windows apparently can't transparently handle global
3947 variables defined in DLLs. Initialisations such as:
3949 const ASN1_ITEM *it = &ASN1_INTEGER_it;
3951 wont compile. This is used by the any applications that need to
3952 declare their own ASN1 modules. This was fixed by adding the option
3953 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
3954 needed for static libraries under Win32.
3957 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
3958 setting of purpose and trust fields. New X509_STORE trust and
3959 purpose functions and tidy up setting in other SSL functions.
3962 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
3963 structure. These are inherited by X509_STORE_CTX when it is
3964 initialised. This allows various defaults to be set in the
3965 X509_STORE structure (such as flags for CRL checking and custom
3966 purpose or trust settings) for functions which only use X509_STORE_CTX
3967 internally such as S/MIME.
3969 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
3970 trust settings if they are not set in X509_STORE. This allows X509_STORE
3971 purposes and trust (in S/MIME for example) to override any set by default.
3973 Add command line options for CRL checking to smime, s_client and s_server
3977 *) Initial CRL based revocation checking. If the CRL checking flag(s)
3978 are set then the CRL is looked up in the X509_STORE structure and
3979 its validity and signature checked, then if the certificate is found
3980 in the CRL the verify fails with a revoked error.
3982 Various new CRL related callbacks added to X509_STORE_CTX structure.
3984 Command line options added to 'verify' application to support this.
3986 This needs some additional work, such as being able to handle multiple
3987 CRLs with different times, extension based lookup (rather than just
3988 by subject name) and ultimately more complete V2 CRL extension
3992 *) Add a general user interface API (crypto/ui/). This is designed
3993 to replace things like des_read_password and friends (backward
3994 compatibility functions using this new API are provided).
3995 The purpose is to remove prompting functions from the DES code
3996 section as well as provide for prompting through dialog boxes in
3997 a window system and the like.
4000 *) Add "ex_data" support to ENGINE so implementations can add state at a
4001 per-structure level rather than having to store it globally.
4004 *) Make it possible for ENGINE structures to be copied when retrieved by
4005 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
4006 This causes the "original" ENGINE structure to act like a template,
4007 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
4008 operational state can be localised to each ENGINE structure, despite the
4009 fact they all share the same "methods". New ENGINE structures returned in
4010 this case have no functional references and the return value is the single
4011 structural reference. This matches the single structural reference returned
4012 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4016 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4017 needs to match any other type at all we need to manually clear the
4021 *) Changes to the "openssl engine" utility to include;
4022 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4023 about an ENGINE's available control commands.
4024 - executing control commands from command line arguments using the
4025 '-pre' and '-post' switches. '-post' is only used if '-t' is
4026 specified and the ENGINE is successfully initialised. The syntax for
4027 the individual commands are colon-separated, for example;
4028 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4031 *) New dynamic control command support for ENGINEs. ENGINEs can now
4032 declare their own commands (numbers), names (strings), descriptions,
4033 and input types for run-time discovery by calling applications. A
4034 subset of these commands are implicitly classed as "executable"
4035 depending on their input type, and only these can be invoked through
4036 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
4037 can be based on user input, config files, etc). The distinction is
4038 that "executable" commands cannot return anything other than a boolean
4039 result and can only support numeric or string input, whereas some
4040 discoverable commands may only be for direct use through
4041 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
4042 pointers, or other custom uses. The "executable" commands are to
4043 support parameterisations of ENGINE behaviour that can be
4044 unambiguously defined by ENGINEs and used consistently across any
4045 OpenSSL-based application. Commands have been added to all the
4046 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
4047 control over shared-library paths without source code alterations.
4050 *) Changed all ENGINE implementations to dynamically allocate their
4051 ENGINEs rather than declaring them statically. Apart from this being
4052 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
4053 this also allows the implementations to compile without using the
4054 internal engine_int.h header.
4057 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
4058 'const' value. Any code that should be able to modify a RAND_METHOD
4059 should already have non-const pointers to it (ie. they should only
4060 modify their own ones).
4063 *) Made a variety of little tweaks to the ENGINE code.
4064 - "atalla" and "ubsec" string definitions were moved from header files
4065 to C code. "nuron" string definitions were placed in variables
4066 rather than hard-coded - allowing parameterisation of these values
4067 later on via ctrl() commands.
4068 - Removed unused "#if 0"'d code.
4069 - Fixed engine list iteration code so it uses ENGINE_free() to release
4070 structural references.
4071 - Constified the RAND_METHOD element of ENGINE structures.
4072 - Constified various get/set functions as appropriate and added
4073 missing functions (including a catch-all ENGINE_cpy that duplicates
4074 all ENGINE values onto a new ENGINE except reference counts/state).
4075 - Removed NULL parameter checks in get/set functions. Setting a method
4076 or function to NULL is a way of cancelling out a previously set
4077 value. Passing a NULL ENGINE parameter is just plain stupid anyway
4078 and doesn't justify the extra error symbols and code.
4079 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
4080 flags from engine_int.h to engine.h.
4081 - Changed prototypes for ENGINE handler functions (init(), finish(),
4082 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
4085 *) Implement binary inversion algorithm for BN_mod_inverse in addition
4086 to the algorithm using long division. The binary algorithm can be
4087 used only if the modulus is odd. On 32-bit systems, it is faster
4088 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
4089 roughly 5-15% for 256-bit moduli), so we use it only for moduli
4090 up to 450 bits. In 64-bit environments, the binary algorithm
4091 appears to be advantageous for much longer moduli; here we use it
4092 for moduli up to 2048 bits.
4095 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
4096 could not support the combine flag in choice fields.
4099 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
4100 extensions from a certificate request to the certificate.
4103 *) Allow multiple 'certopt' and 'nameopt' options to be separated
4104 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
4105 file: this allows the display of the certificate about to be
4106 signed to be customised, to allow certain fields to be included
4107 or excluded and extension details. The old system didn't display
4108 multicharacter strings properly, omitted fields not in the policy
4109 and couldn't display additional details such as extensions.
4112 *) Function EC_POINTs_mul for multiple scalar multiplication
4113 of an arbitrary number of elliptic curve points
4114 \sum scalars[i]*points[i],
4115 optionally including the generator defined for the EC_GROUP:
4116 scalar*generator + \sum scalars[i]*points[i].
4118 EC_POINT_mul is a simple wrapper function for the typical case
4119 that the point list has just one item (besides the optional
4123 *) First EC_METHODs for curves over GF(p):
4125 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
4126 operations and provides various method functions that can also
4127 operate with faster implementations of modular arithmetic.
4129 EC_GFp_mont_method() reuses most functions that are part of
4130 EC_GFp_simple_method, but uses Montgomery arithmetic.
4132 [Bodo Moeller; point addition and point doubling
4133 implementation directly derived from source code provided by
4134 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
4136 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
4137 crypto/ec/ec_lib.c):
4139 Curves are EC_GROUP objects (with an optional group generator)
4140 based on EC_METHODs that are built into the library.
4142 Points are EC_POINT objects based on EC_GROUP objects.
4144 Most of the framework would be able to handle curves over arbitrary
4145 finite fields, but as there are no obvious types for fields other
4146 than GF(p), some functions are limited to that for now.
4149 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
4150 that the file contains a complete HTTP response.
4153 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
4154 change the def and num file printf format specifier from "%-40sXXX"
4155 to "%-39s XXX". The latter will always guarantee a space after the
4156 field while the former will cause them to run together if the field
4157 is 40 of more characters long.
4160 *) Constify the cipher and digest 'method' functions and structures
4161 and modify related functions to take constant EVP_MD and EVP_CIPHER
4165 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
4166 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
4169 *) Modify EVP_Digest*() routines so they now return values. Although the
4170 internal software routines can never fail additional hardware versions
4174 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
4176 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
4177 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
4180 ERR_R_NESTED_ASN1_ERROR
4182 ERR_R_MISSING_ASN1_EOS
4183 were 4 .. 9, conflicting with
4184 ERR_LIB_RSA (= ERR_R_RSA_LIB)
4186 ERR_LIB_PEM (= ERR_R_PEM_LIB).
4187 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
4189 Add new error code 'ERR_R_INTERNAL_ERROR'.
4192 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
4196 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
4197 sets the subject name for a new request or supersedes the
4198 subject name in a given request. Formats that can be parsed are
4199 'CN=Some Name, OU=myOU, C=IT'
4201 'CN=Some Name/OU=myOU/C=IT'.
4203 Add options '-batch' and '-verbose' to 'openssl req'.
4204 [Massimiliano Pala <madwolf@hackmasters.net>]
4206 *) Introduce the possibility to access global variables through
4207 functions on platform were that's the best way to handle exporting
4208 global variables in shared libraries. To enable this functionality,
4209 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
4210 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
4211 is normally done by Configure or something similar).
4213 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
4214 in the source file (foo.c) like this:
4216 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
4217 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
4219 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
4220 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
4222 OPENSSL_DECLARE_GLOBAL(int,foo);
4223 #define foo OPENSSL_GLOBAL_REF(foo)
4224 OPENSSL_DECLARE_GLOBAL(double,bar);
4225 #define bar OPENSSL_GLOBAL_REF(bar)
4227 The #defines are very important, and therefore so is including the
4228 header file everywhere where the defined globals are used.
4230 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
4231 of ASN.1 items, but that structure is a bit different.
4233 The largest change is in util/mkdef.pl which has been enhanced with
4234 better and easier to understand logic to choose which symbols should
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