5 Changes between 1.0.0 and 1.1.0 [xx XXX xxxx]
7 *) New function OPENSSL_gmtime_diff to find the difference in days
8 and seconds between two tm structures. This will be used to provide
9 additional functionality for ASN1_TIME.
12 *) New -sigopt option to the ca, req and x509 utilities. Additional
13 signature parameters can be passed using this option and in
17 *) Add RSA PSS signing function. This will generate and set the
18 appropriate AlgorithmIdentifiers for PSS based on those in the
19 corresponding EVP_MD_CTX structure. No application support yet.
22 *) Support for companion algorithm specific ASN1 signing routines.
23 New function ASN1_item_sign_ctx() signs a pre-initialised
24 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
25 the appropriate parameters.
28 *) Add new algorithm specific ASN1 verification initialisation function
29 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
30 handling will be the same no matter what EVP_PKEY_METHOD is used.
31 Add a PSS handler to support verification of PSS signatures: checked
32 against a number of sample certificates.
35 *) Add signature printing for PSS. Add PSS OIDs.
36 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
38 *) Add algorithm specific signature printing. An individual ASN1 method
39 can now print out signatures instead of the standard hex dump.
41 More complex signatures (e.g. PSS) can print out more meaningful
42 information. Include DSA version that prints out the signature
46 *) Add -trusted_first option which attempts to find certificates in the
47 trusted store even if an untrusted chain is also supplied.
50 *) Initial experimental support for explicitly trusted non-root CAs.
51 OpenSSL still tries to build a complete chain to a root but if an
52 intermediate CA has a trust setting included that is used. The first
53 setting is used: whether to trust or reject.
56 *) New -verify_name option in command line utilities to set verification
60 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
61 Add CMAC pkey methods.
64 *) Experiemental regnegotiation in s_server -www mode. If the client
65 browses /reneg connection is renegotiated. If /renegcert it is
66 renegotiated requesting a certificate.
69 *) Add an "external" session cache for debugging purposes to s_server. This
70 should help trace issues which normally are only apparent in deployed
71 multi-process servers.
74 *) Experiemental password based recipient info support for CMS library:
78 *) Split password based encryption into PBES2 and PBKDF2 functions. This
79 neatly separates the code into cipher and PBE sections and is required
80 for some algorithms that split PBES2 into separate pieces (such as
84 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
85 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
86 BIO_set_cipher() and some obscure PEM functions were changed so they
87 can now return an error. The RAND changes required a change to the
88 RAND_METHOD structure.
91 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
92 a gcc attribute to warn if the result of a function is ignored. This
93 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
94 whose return value is often ignored.
97 Changes between 1.0.0 and 1.0.1 [xx XXX xxxx]
99 *) Add call to ENGINE_register_all_complete() to
100 ENGINE_load_builtin_engines(), so some implementations get used
101 automatically instead of needing explicit application support.
104 *) Add support for TLS key exporter as described in RFC5705.
105 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
107 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
108 a few changes are required:
110 Add SSL_OP_NO_TLSv1_1 flag.
112 Update version checking logic to handle version 1.1.
113 Add explicit IV handling (ported from DTLS code).
114 Add command line options to s_client/s_server.
117 Changes between 1.0.0a and 1.0.0b [xx XXX xxxx]
120 *) Fix WIN32 build system to correctly link an ENGINE directory into
124 Changes between 1.0.0 and 1.0.0a [xx XXX xxxx]
126 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
128 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
130 Changes between 0.9.8n and 1.0.0 [xx XXX xxxx]
132 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
133 context. The operation can be customised via the ctrl mechanism in
134 case ENGINEs want to include additional functionality.
137 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
140 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
141 output hashes compatible with older versions of OpenSSL.
142 [Willy Weisz <weisz@vcpc.univie.ac.at>]
144 *) Fix compression algorithm handling: if resuming a session use the
145 compression algorithm of the resumed session instead of determining
146 it from client hello again. Don't allow server to change algorithm.
149 *) Add load_crls() function to apps tidying load_certs() too. Add option
150 to verify utility to allow additional CRLs to be included.
153 *) Update OCSP request code to permit adding custom headers to the request:
154 some responders need this.
157 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
159 [Julia Lawall <julia@diku.dk>]
161 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
162 needlessly dereferenced structures, used obsolete functions and
163 didn't handle all updated verify codes correctly.
166 *) Disable MD2 in the default configuration.
169 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
170 indicate the initial BIO being pushed or popped. This makes it possible
171 to determine whether the BIO is the one explicitly called or as a result
172 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
173 it handles reference counts correctly and doesn't zero out the I/O bio
174 when it is not being explicitly popped. WARNING: applications which
175 included workarounds for the old buggy behaviour will need to be modified
176 or they could free up already freed BIOs.
179 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
180 renaming to all platforms (within the 0.9.8 branch, this was
181 done conditionally on Netware platforms to avoid a name clash).
182 [Guenter <lists@gknw.net>]
184 *) Add ECDHE and PSK support to DTLS.
185 [Michael Tuexen <tuexen@fh-muenster.de>]
187 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
191 *) Add "missing" function EVP_MD_flags() (without this the only way to
192 retrieve a digest flags is by accessing the structure directly. Update
193 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
194 or cipher is registered as in the "from" argument. Print out all
195 registered digests in the dgst usage message instead of manually
196 attempting to work them out.
199 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
200 this allows the use of compression and extensions. Change default cipher
201 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
202 by default unless an application cipher string requests it.
205 *) Alter match criteria in PKCS12_parse(). It used to try to use local
206 key ids to find matching certificates and keys but some PKCS#12 files
207 don't follow the (somewhat unwritten) rules and this strategy fails.
208 Now just gather all certificates together and the first private key
209 then look for the first certificate that matches the key.
212 *) Support use of registered digest and cipher names for dgst and cipher
213 commands instead of having to add each one as a special case. So now
220 openssl dgst -sha256 foo
222 and this works for ENGINE based algorithms too.
226 *) Update Gost ENGINE to support parameter files.
227 [Victor B. Wagner <vitus@cryptocom.ru>]
229 *) Support GeneralizedTime in ca utility.
230 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
232 *) Enhance the hash format used for certificate directory links. The new
233 form uses the canonical encoding (meaning equivalent names will work
234 even if they aren't identical) and uses SHA1 instead of MD5. This form
235 is incompatible with the older format and as a result c_rehash should
236 be used to rebuild symbolic links.
239 *) Make PKCS#8 the default write format for private keys, replacing the
240 traditional format. This form is standardised, more secure and doesn't
241 include an implicit MD5 dependency.
244 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
245 committed to OpenSSL should pass this lot as a minimum.
248 *) Add session ticket override functionality for use by EAP-FAST.
249 [Jouni Malinen <j@w1.fi>]
251 *) Modify HMAC functions to return a value. Since these can be implemented
252 in an ENGINE errors can occur.
255 *) Type-checked OBJ_bsearch_ex.
258 *) Type-checked OBJ_bsearch. Also some constification necessitated
259 by type-checking. Still to come: TXT_DB, bsearch(?),
260 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
264 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
265 seconds to a tm structure directly, instead of going through OS
266 specific date routines. This avoids any issues with OS routines such
267 as the year 2038 bug. New *_adj() functions for ASN1 time structures
268 and X509_time_adj_ex() to cover the extended range. The existing
269 X509_time_adj() is still usable and will no longer have any date issues.
272 *) Delta CRL support. New use deltas option which will attempt to locate
273 and search any appropriate delta CRLs available.
275 This work was sponsored by Google.
278 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
279 code and add additional score elements. Validate alternate CRL paths
280 as part of the CRL checking and indicate a new error "CRL path validation
281 error" in this case. Applications wanting additional details can use
282 the verify callback and check the new "parent" field. If this is not
283 NULL CRL path validation is taking place. Existing applications wont
284 see this because it requires extended CRL support which is off by
287 This work was sponsored by Google.
290 *) Support for freshest CRL extension.
292 This work was sponsored by Google.
295 *) Initial indirect CRL support. Currently only supported in the CRLs
296 passed directly and not via lookup. Process certificate issuer
297 CRL entry extension and lookup CRL entries by bother issuer name
298 and serial number. Check and process CRL issuer entry in IDP extension.
300 This work was sponsored by Google.
303 *) Add support for distinct certificate and CRL paths. The CRL issuer
304 certificate is validated separately in this case. Only enabled if
305 an extended CRL support flag is set: this flag will enable additional
306 CRL functionality in future.
308 This work was sponsored by Google.
311 *) Add support for policy mappings extension.
313 This work was sponsored by Google.
316 *) Fixes to pathlength constraint, self issued certificate handling,
317 policy processing to align with RFC3280 and PKITS tests.
319 This work was sponsored by Google.
322 *) Support for name constraints certificate extension. DN, email, DNS
323 and URI types are currently supported.
325 This work was sponsored by Google.
328 *) To cater for systems that provide a pointer-based thread ID rather
329 than numeric, deprecate the current numeric thread ID mechanism and
330 replace it with a structure and associated callback type. This
331 mechanism allows a numeric "hash" to be extracted from a thread ID in
332 either case, and on platforms where pointers are larger than 'long',
333 mixing is done to help ensure the numeric 'hash' is usable even if it
334 can't be guaranteed unique. The default mechanism is to use "&errno"
335 as a pointer-based thread ID to distinguish between threads.
337 Applications that want to provide their own thread IDs should now use
338 CRYPTO_THREADID_set_callback() to register a callback that will call
339 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
341 Note that ERR_remove_state() is now deprecated, because it is tied
342 to the assumption that thread IDs are numeric. ERR_remove_state(0)
343 to free the current thread's error state should be replaced by
344 ERR_remove_thread_state(NULL).
346 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
347 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
348 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
349 application was previously providing a numeric thread callback that
350 was inappropriate for distinguishing threads, then uniqueness might
351 have been obtained with &errno that happened immediately in the
352 intermediate development versions of OpenSSL; this is no longer the
353 case, the numeric thread callback will now override the automatic use
355 [Geoff Thorpe, with help from Bodo Moeller]
357 *) Initial support for different CRL issuing certificates. This covers a
358 simple case where the self issued certificates in the chain exist and
359 the real CRL issuer is higher in the existing chain.
361 This work was sponsored by Google.
364 *) Removed effectively defunct crypto/store from the build.
367 *) Revamp of STACK to provide stronger type-checking. Still to come:
368 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
369 ASN1_STRING, CONF_VALUE.
372 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
373 RAM on SSL connections. This option can save about 34k per idle SSL.
376 *) Revamp of LHASH to provide stronger type-checking. Still to come:
377 STACK, TXT_DB, bsearch, qsort.
380 *) Initial support for Cryptographic Message Syntax (aka CMS) based
381 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
382 support for data, signedData, compressedData, digestedData and
383 encryptedData, envelopedData types included. Scripts to check against
384 RFC4134 examples draft and interop and consistency checks of many
385 content types and variants.
388 *) Add options to enc utility to support use of zlib compression BIO.
391 *) Extend mk1mf to support importing of options and assembly language
392 files from Configure script, currently only included in VC-WIN32.
393 The assembly language rules can now optionally generate the source
394 files from the associated perl scripts.
397 *) Implement remaining functionality needed to support GOST ciphersuites.
398 Interop testing has been performed using CryptoPro implementations.
399 [Victor B. Wagner <vitus@cryptocom.ru>]
401 *) s390x assembler pack.
404 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
408 *) Implement Opaque PRF Input TLS extension as specified in
409 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
410 official specification yet and no extension type assignment by
411 IANA exists, this extension (for now) will have to be explicitly
412 enabled when building OpenSSL by providing the extension number
413 to use. For example, specify an option
415 -DTLSEXT_TYPE_opaque_prf_input=0x9527
417 to the "config" or "Configure" script to enable the extension,
418 assuming extension number 0x9527 (which is a completely arbitrary
419 and unofficial assignment based on the MD5 hash of the Internet
420 Draft). Note that by doing so, you potentially lose
421 interoperability with other TLS implementations since these might
422 be using the same extension number for other purposes.
424 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
425 opaque PRF input value to use in the handshake. This will create
426 an interal copy of the length-'len' string at 'src', and will
427 return non-zero for success.
429 To get more control and flexibility, provide a callback function
432 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
433 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
437 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
440 Callback function 'cb' will be called in handshakes, and is
441 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
442 Argument 'arg' is for application purposes (the value as given to
443 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
444 be provided to the callback function). The callback function
445 has to return non-zero to report success: usually 1 to use opaque
446 PRF input just if possible, or 2 to enforce use of the opaque PRF
447 input. In the latter case, the library will abort the handshake
448 if opaque PRF input is not successfully negotiated.
450 Arguments 'peerinput' and 'len' given to the callback function
451 will always be NULL and 0 in the case of a client. A server will
452 see the client's opaque PRF input through these variables if
453 available (NULL and 0 otherwise). Note that if the server
454 provides an opaque PRF input, the length must be the same as the
455 length of the client's opaque PRF input.
457 Note that the callback function will only be called when creating
458 a new session (session resumption can resume whatever was
459 previously negotiated), and will not be called in SSL 2.0
460 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
461 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
462 for applications that need to enforce opaque PRF input.
466 *) Update ssl code to support digests other than SHA1+MD5 for handshake
469 [Victor B. Wagner <vitus@cryptocom.ru>]
471 *) Add RFC4507 support to OpenSSL. This includes the corrections in
472 RFC4507bis. The encrypted ticket format is an encrypted encoded
473 SSL_SESSION structure, that way new session features are automatically
476 If a client application caches session in an SSL_SESSION structure
477 support is transparent because tickets are now stored in the encoded
480 The SSL_CTX structure automatically generates keys for ticket
481 protection in servers so again support should be possible
482 with no application modification.
484 If a client or server wishes to disable RFC4507 support then the option
485 SSL_OP_NO_TICKET can be set.
487 Add a TLS extension debugging callback to allow the contents of any client
488 or server extensions to be examined.
490 This work was sponsored by Google.
493 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
494 OpenSSL should now compile cleanly on gcc 4.2
495 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
497 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
498 support including streaming MAC support: this is required for GOST
500 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
502 *) Add option -stream to use PKCS#7 streaming in smime utility. New
503 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
504 to output in BER and PEM format.
507 *) Experimental support for use of HMAC via EVP_PKEY interface. This
508 allows HMAC to be handled via the EVP_DigestSign*() interface. The
509 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
510 ENGINE support for HMAC keys which are unextractable. New -mac and
511 -macopt options to dgst utility.
514 *) New option -sigopt to dgst utility. Update dgst to use
515 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
516 alternative signing paramaters such as X9.31 or PSS in the dgst
520 *) Change ssl_cipher_apply_rule(), the internal function that does
521 the work each time a ciphersuite string requests enabling
522 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
523 removing ("!foo+bar") a class of ciphersuites: Now it maintains
524 the order of disabled ciphersuites such that those ciphersuites
525 that most recently went from enabled to disabled not only stay
526 in order with respect to each other, but also have higher priority
527 than other disabled ciphersuites the next time ciphersuites are
530 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
531 the same ciphersuites as with "HIGH" alone, but in a specific
532 order where the PSK ciphersuites come first (since they are the
533 most recently disabled ciphersuites when "HIGH" is parsed).
535 Also, change ssl_create_cipher_list() (using this new
536 funcionality) such that between otherwise identical
537 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
541 *) Change ssl_create_cipher_list() so that it automatically
542 arranges the ciphersuites in reasonable order before starting
543 to process the rule string. Thus, the definition for "DEFAULT"
544 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
545 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
546 This makes it much easier to arrive at a reasonable default order
547 in applications for which anonymous ciphers are OK (meaning
548 that you can't actually use DEFAULT).
549 [Bodo Moeller; suggested by Victor Duchovni]
551 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
552 processing) into multiple integers instead of setting
553 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
554 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
555 (These masks as well as the individual bit definitions are hidden
556 away into the non-exported interface ssl/ssl_locl.h, so this
557 change to the definition of the SSL_CIPHER structure shouldn't
558 affect applications.) This give us more bits for each of these
559 categories, so there is no longer a need to coagulate AES128 and
560 AES256 into a single algorithm bit, and to coagulate Camellia128
561 and Camellia256 into a single algorithm bit, which has led to all
564 Thus, among other things, the kludge introduced in 0.9.7m and
565 0.9.8e for masking out AES256 independently of AES128 or masking
566 out Camellia256 independently of AES256 is not needed here in 0.9.9.
568 With the change, we also introduce new ciphersuite aliases that
569 so far were missing: "AES128", "AES256", "CAMELLIA128", and
573 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
574 Use the leftmost N bytes of the signature input if the input is
575 larger than the prime q (with N being the size in bytes of q).
578 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
579 it yet and it is largely untested.
582 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
585 *) Initial incomplete changes to avoid need for function casts in OpenSSL
586 some compilers (gcc 4.2 and later) reject their use. Safestack is
587 reimplemented. Update ASN1 to avoid use of legacy functions.
590 *) Win32/64 targets are linked with Winsock2.
593 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
594 to external functions. This can be used to increase CRL handling
595 efficiency especially when CRLs are very large by (for example) storing
596 the CRL revoked certificates in a database.
599 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
600 new CRLs added to a directory can be used. New command line option
601 -verify_return_error to s_client and s_server. This causes real errors
602 to be returned by the verify callback instead of carrying on no matter
603 what. This reflects the way a "real world" verify callback would behave.
606 *) GOST engine, supporting several GOST algorithms and public key formats.
607 Kindly donated by Cryptocom.
610 *) Partial support for Issuing Distribution Point CRL extension. CRLs
611 partitioned by DP are handled but no indirect CRL or reason partitioning
612 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
613 selected via a scoring technique which handles IDP and AKID in CRLs.
616 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
617 will ultimately be used for all verify operations: this will remove the
618 X509_STORE dependency on certificate verification and allow alternative
619 lookup methods. X509_STORE based implementations of these two callbacks.
622 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
623 Modify get_crl() to find a valid (unexpired) CRL if possible.
626 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
627 this would be called X509_CRL_cmp() but that name is already used by
628 a function that just compares CRL issuer names. Cache several CRL
629 extensions in X509_CRL structure and cache CRLDP in X509.
632 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
633 this maps equivalent X509_NAME structures into a consistent structure.
634 Name comparison can then be performed rapidly using memcmp().
637 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
641 *) Allow digests to supply their own micalg string for S/MIME type using
642 the ctrl EVP_MD_CTRL_MICALG.
645 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
646 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
647 ctrl. It can then customise the structure before and/or after signing
651 *) New function OBJ_add_sigid() to allow application defined signature OIDs
652 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
653 to free up any added signature OIDs.
656 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
657 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
658 digest and cipher tables. New options added to openssl utility:
659 list-message-digest-algorithms and list-cipher-algorithms.
662 *) Change the array representation of binary polynomials: the list
663 of degrees of non-zero coefficients is now terminated with -1.
664 Previously it was terminated with 0, which was also part of the
665 value; thus, the array representation was not applicable to
666 polynomials where t^0 has coefficient zero. This change makes
667 the array representation useful in a more general context.
670 *) Various modifications and fixes to SSL/TLS cipher string
671 handling. For ECC, the code now distinguishes between fixed ECDH
672 with RSA certificates on the one hand and with ECDSA certificates
673 on the other hand, since these are separate ciphersuites. The
674 unused code for Fortezza ciphersuites has been removed.
676 For consistency with EDH, ephemeral ECDH is now called "EECDH"
677 (not "ECDHE"). For consistency with the code for DH
678 certificates, use of ECDH certificates is now considered ECDH
679 authentication, not RSA or ECDSA authentication (the latter is
680 merely the CA's signing algorithm and not actively used in the
683 The temporary ciphersuite alias "ECCdraft" is no longer
684 available, and ECC ciphersuites are no longer excluded from "ALL"
685 and "DEFAULT". The following aliases now exist for RFC 4492
686 ciphersuites, most of these by analogy with the DH case:
688 kECDHr - ECDH cert, signed with RSA
689 kECDHe - ECDH cert, signed with ECDSA
690 kECDH - ECDH cert (signed with either RSA or ECDSA)
691 kEECDH - ephemeral ECDH
692 ECDH - ECDH cert or ephemeral ECDH
698 AECDH - anonymous ECDH
699 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
703 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
704 Use correct micalg parameters depending on digest(s) in signed message.
707 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
708 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
711 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
712 an engine to register a method. Add ENGINE lookups for methods and
713 functional reference processing.
716 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
717 EVP_{Sign,Verify}* which allow an application to customise the signature
721 *) New -resign option to smime utility. This adds one or more signers
722 to an existing PKCS#7 signedData structure. Also -md option to use an
723 alternative message digest algorithm for signing.
726 *) Tidy up PKCS#7 routines and add new functions to make it easier to
727 create PKCS7 structures containing multiple signers. Update smime
728 application to support multiple signers.
731 *) New -macalg option to pkcs12 utility to allow setting of an alternative
735 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
736 Reorganize PBE internals to lookup from a static table using NIDs,
737 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
738 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
739 PRF which will be automatically used with PBES2.
742 *) Replace the algorithm specific calls to generate keys in "req" with the
746 *) Update PKCS#7 enveloped data routines to use new API. This is now
747 supported by any public key method supporting the encrypt operation. A
748 ctrl is added to allow the public key algorithm to examine or modify
749 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
753 *) Add a ctrl to asn1 method to allow a public key algorithm to express
754 a default digest type to use. In most cases this will be SHA1 but some
755 algorithms (such as GOST) need to specify an alternative digest. The
756 return value indicates how strong the prefernce is 1 means optional and
757 2 is mandatory (that is it is the only supported type). Modify
758 ASN1_item_sign() to accept a NULL digest argument to indicate it should
759 use the default md. Update openssl utilities to use the default digest
760 type for signing if it is not explicitly indicated.
763 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
764 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
765 signing method from the key type. This effectively removes the link
766 between digests and public key types.
769 *) Add an OID cross reference table and utility functions. Its purpose is to
770 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
771 rsaEncryption. This will allow some of the algorithm specific hackery
772 needed to use the correct OID to be removed.
775 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
776 structures for PKCS7_sign(). They are now set up by the relevant public
780 *) Add provisional EC pkey method with support for ECDSA and ECDH.
783 *) Add support for key derivation (agreement) in the API, DH method and
787 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
788 public and private key formats. As a side effect these add additional
789 command line functionality not previously available: DSA signatures can be
790 generated and verified using pkeyutl and DH key support and generation in
795 [Oliver Tappe <zooey@hirschkaefer.de>]
797 *) New make target "install_html_docs" installs HTML renditions of the
799 [Oliver Tappe <zooey@hirschkaefer.de>]
801 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
802 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
803 support key and parameter generation and add initial key generation
804 functionality for RSA.
807 *) Add functions for main EVP_PKEY_method operations. The undocumented
808 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
809 EVP_PKEY_{encrypt,decrypt}_old.
812 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
813 key API, doesn't do much yet.
816 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
817 public key algorithms. New option to openssl utility:
818 "list-public-key-algorithms" to print out info.
821 *) Implement the Supported Elliptic Curves Extension for
822 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
825 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
826 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
829 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
830 utilities such as rsa, dsa, dsaparam etc except they process any key
834 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
835 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
836 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
840 *) Initial support for pluggable public key ASN1.
841 De-spaghettify the public key ASN1 handling. Move public and private
842 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
843 algorithm specific handling to a single module within the relevant
844 algorithm directory. Add functions to allow (near) opaque processing
845 of public and private key structures.
848 *) Implement the Supported Point Formats Extension for
849 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
852 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
853 for the psk identity [hint] and the psk callback functions to the
854 SSL_SESSION, SSL and SSL_CTX structure.
857 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
861 SSL_CTX_use_psk_identity_hint
862 SSL_get_psk_identity_hint
864 SSL_use_psk_identity_hint
866 [Mika Kousa and Pasi Eronen of Nokia Corporation]
868 *) Add RFC 3161 compliant time stamp request creation, response generation
869 and response verification functionality.
870 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
872 *) Add initial support for TLS extensions, specifically for the server_name
873 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
874 have new members for a host name. The SSL data structure has an
875 additional member SSL_CTX *initial_ctx so that new sessions can be
876 stored in that context to allow for session resumption, even after the
877 SSL has been switched to a new SSL_CTX in reaction to a client's
878 server_name extension.
880 New functions (subject to change):
883 SSL_get_servername_type()
886 New CTRL codes and macros (subject to change):
888 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
889 - SSL_CTX_set_tlsext_servername_callback()
890 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
891 - SSL_CTX_set_tlsext_servername_arg()
892 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
894 openssl s_client has a new '-servername ...' option.
896 openssl s_server has new options '-servername_host ...', '-cert2 ...',
897 '-key2 ...', '-servername_fatal' (subject to change). This allows
898 testing the HostName extension for a specific single host name ('-cert'
899 and '-key' remain fallbacks for handshakes without HostName
900 negotiation). If the unrecogninzed_name alert has to be sent, this by
901 default is a warning; it becomes fatal with the '-servername_fatal'
904 [Peter Sylvester, Remy Allais, Christophe Renou]
906 *) Whirlpool hash implementation is added.
909 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
910 bn(64,32). Because of instruction set limitations it doesn't have
911 any negative impact on performance. This was done mostly in order
912 to make it possible to share assembler modules, such as bn_mul_mont
913 implementations, between 32- and 64-bit builds without hassle.
916 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
917 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
921 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
922 dedicated Montgomery multiplication procedure, is introduced.
923 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
924 "64-bit" performance on certain 32-bit targets.
927 *) New option SSL_OP_NO_COMP to disable use of compression selectively
928 in SSL structures. New SSL ctrl to set maximum send fragment size.
929 Save memory by seeting the I/O buffer sizes dynamically instead of
930 using the maximum available value.
933 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
934 in addition to the text details.
937 *) Very, very preliminary EXPERIMENTAL support for printing of general
938 ASN1 structures. This currently produces rather ugly output and doesn't
939 handle several customised structures at all.
942 *) Integrated support for PVK file format and some related formats such
943 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
944 these in the 'rsa' and 'dsa' utilities.
947 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
950 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
951 place for the (very old) "NETSCAPE" format certificates which are now
952 handled using new ASN1 code equivalents.
955 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
956 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
957 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
960 *) Modify CRL distribution points extension code to print out previously
961 unsupported fields. Enhance extension setting code to allow setting of
965 *) Add print and set support for Issuing Distribution Point CRL extension.
968 *) Change 'Configure' script to enable Camellia by default.
971 Changes between 0.9.8n and 0.9.8o [xx XXX xxxx]
973 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
974 access or freeing data twice (CVE-2010-0742)
975 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
977 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
978 common in certificates and some applications which only call
979 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
982 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
984 *) When rejecting SSL/TLS records due to an incorrect version number, never
985 update s->server with a new major version number. As of
986 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
987 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
988 the previous behavior could result in a read attempt at NULL when
989 receiving specific incorrect SSL/TLS records once record payload
990 protection is active. (CVE-2010-####)
991 [Bodo Moeller, Adam Langley]
993 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
994 could be crashed if the relevant tables were not present (e.g. chrooted).
995 [Tomas Hoger <thoger@redhat.com>]
997 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
999 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1000 [Martin Olsson, Neel Mehta]
1002 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1003 accommodate for stack sorting, always a write lock!).
1006 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1007 excessive delays in the RAND_poll(): over a minute. As a workaround
1008 include a time check in the inner Heap32Next loop too.
1011 *) The code that handled flushing of data in SSL/TLS originally used the
1012 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1013 the problem outlined in PR#1949. The fix suggested there however can
1014 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1015 of Apache). So instead simplify the code to flush unconditionally.
1016 This should be fine since flushing with no data to flush is a no op.
1019 *) Handle TLS versions 2.0 and later properly and correctly use the
1020 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1021 off ancient servers have a habit of sticking around for a while...
1024 *) Modify compression code so it frees up structures without using the
1025 ex_data callbacks. This works around a problem where some applications
1026 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1027 restarting) then use compression (e.g. SSL with compression) later.
1028 This results in significant per-connection memory leaks and
1029 has caused some security issues including CVE-2008-1678 and
1033 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1034 change when encrypting or decrypting.
1037 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1038 connect and renegotiate with servers which do not support RI.
1039 Until RI is more widely deployed this option is enabled by default.
1042 *) Add "missing" ssl ctrls to clear options and mode.
1045 *) If client attempts to renegotiate and doesn't support RI respond with
1046 a no_renegotiation alert as required by RFC5746. Some renegotiating
1047 TLS clients will continue a connection gracefully when they receive
1048 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1049 waiting for a server hello which it will never receive. Now we treat a
1050 received no_renegotiation alert as a fatal error. This is because
1051 applications requesting a renegotiation might well expect it to succeed
1052 and would have no code in place to handle the server denying it so the
1053 only safe thing to do is to terminate the connection.
1056 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1057 peer supports secure renegotiation and 0 otherwise. Print out peer
1058 renegotiation support in s_client/s_server.
1061 *) Replace the highly broken and deprecated SPKAC certification method with
1062 the updated NID creation version. This should correctly handle UTF8.
1065 *) Implement RFC5746. Re-enable renegotiation but require the extension
1066 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1067 turns out to be a bad idea. It has been replaced by
1068 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1069 SSL_CTX_set_options(). This is really not recommended unless you
1070 know what you are doing.
1071 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1073 *) Fixes to stateless session resumption handling. Use initial_ctx when
1074 issuing and attempting to decrypt tickets in case it has changed during
1075 servername handling. Use a non-zero length session ID when attempting
1076 stateless session resumption: this makes it possible to determine if
1077 a resumption has occurred immediately after receiving server hello
1078 (several places in OpenSSL subtly assume this) instead of later in
1082 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1083 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1084 fixes for a few places where the return code is not checked
1086 [Julia Lawall <julia@diku.dk>]
1088 *) Add --strict-warnings option to Configure script to include devteam
1089 warnings in other configurations.
1092 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1093 makes it possible to install openssl libraries in locations which
1094 have names other than "lib", for example "/usr/lib64" which some
1096 [Steve Henson, based on patch from Jeremy Utley]
1098 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1099 X690 8.9.12 and can produce some misleading textual output of OIDs.
1100 [Steve Henson, reported by Dan Kaminsky]
1102 *) Delete MD2 from algorithm tables. This follows the recommendation in
1103 several standards that it is not used in new applications due to
1104 several cryptographic weaknesses. For binary compatibility reasons
1105 the MD2 API is still compiled in by default.
1108 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1112 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1113 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1115 [Guenter <lists@gknw.net>]
1117 *) Fix the server certificate chain building code to use X509_verify_cert(),
1118 it used to have an ad-hoc builder which was unable to cope with anything
1119 other than a simple chain.
1120 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1122 *) Don't check self signed certificate signatures in X509_verify_cert()
1123 by default (a flag can override this): it just wastes time without
1124 adding any security. As a useful side effect self signed root CAs
1125 with non-FIPS digests are now usable in FIPS mode.
1128 *) In dtls1_process_out_of_seq_message() the check if the current message
1129 is already buffered was missing. For every new message was memory
1130 allocated, allowing an attacker to perform an denial of service attack
1131 with sending out of seq handshake messages until there is no memory
1132 left. Additionally every future messege was buffered, even if the
1133 sequence number made no sense and would be part of another handshake.
1134 So only messages with sequence numbers less than 10 in advance will be
1135 buffered. (CVE-2009-1378)
1136 [Robin Seggelmann, discovered by Daniel Mentz]
1138 *) Records are buffered if they arrive with a future epoch to be
1139 processed after finishing the corresponding handshake. There is
1140 currently no limitation to this buffer allowing an attacker to perform
1141 a DOS attack with sending records with future epochs until there is no
1142 memory left. This patch adds the pqueue_size() function to detemine
1143 the size of a buffer and limits the record buffer to 100 entries.
1145 [Robin Seggelmann, discovered by Daniel Mentz]
1147 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1148 parent structure is freed. (CVE-2009-1379)
1151 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1152 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1155 [Ilya O. <vrghost@gmail.com>]
1157 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1159 *) Disable renegotiation completely - this fixes a severe security
1160 problem (CVE-2009-3555) at the cost of breaking all
1161 renegotiation. Renegotiation can be re-enabled by setting
1162 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1163 run-time. This is really not recommended unless you know what
1167 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1169 *) Don't set val to NULL when freeing up structures, it is freed up by
1170 underlying code. If sizeof(void *) > sizeof(long) this can result in
1171 zeroing past the valid field. (CVE-2009-0789)
1172 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1174 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1175 checked correctly. This would allow some invalid signed attributes to
1176 appear to verify correctly. (CVE-2009-0591)
1177 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1179 *) Reject UniversalString and BMPString types with invalid lengths. This
1180 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1181 a legal length. (CVE-2009-0590)
1184 *) Set S/MIME signing as the default purpose rather than setting it
1185 unconditionally. This allows applications to override it at the store
1189 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1190 to handle some structures.
1193 *) Improve efficiency of mem_gets: don't search whole buffer each time
1195 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1197 *) New -hex option for openssl rand.
1200 *) Print out UTF8String and NumericString when parsing ASN1.
1203 *) Support NumericString type for name components.
1206 *) Allow CC in the environment to override the automatically chosen
1207 compiler. Note that nothing is done to ensure flags work with the
1211 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1213 *) Properly check EVP_VerifyFinal() and similar return values
1215 [Ben Laurie, Bodo Moeller, Google Security Team]
1217 *) Enable TLS extensions by default.
1220 *) Allow the CHIL engine to be loaded, whether the application is
1221 multithreaded or not. (This does not release the developer from the
1222 obligation to set up the dynamic locking callbacks.)
1223 [Sander Temme <sander@temme.net>]
1225 *) Use correct exit code if there is an error in dgst command.
1226 [Steve Henson; problem pointed out by Roland Dirlewanger]
1228 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1229 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1232 *) Add experimental JPAKE support, including demo authentication in
1233 s_client and s_server.
1236 *) Set the comparison function in v3_addr_canonize().
1237 [Rob Austein <sra@hactrn.net>]
1239 *) Add support for XMPP STARTTLS in s_client.
1240 [Philip Paeps <philip@freebsd.org>]
1242 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1243 to ensure that even with this option, only ciphersuites in the
1244 server's preference list will be accepted. (Note that the option
1245 applies only when resuming a session, so the earlier behavior was
1246 just about the algorithm choice for symmetric cryptography.)
1249 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1251 *) Fix NULL pointer dereference if a DTLS server received
1252 ChangeCipherSpec as first record (CVE-2009-1386).
1255 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1256 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1259 *) The fix in 0.9.8c that supposedly got rid of unsafe
1260 double-checked locking was incomplete for RSA blinding,
1261 addressing just one layer of what turns out to have been
1262 doubly unsafe triple-checked locking.
1264 So now fix this for real by retiring the MONT_HELPER macro
1265 in crypto/rsa/rsa_eay.c.
1267 [Bodo Moeller; problem pointed out by Marius Schilder]
1269 *) Various precautionary measures:
1271 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1273 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1274 (NB: This would require knowledge of the secret session ticket key
1275 to exploit, in which case you'd be SOL either way.)
1277 - Change bn_nist.c so that it will properly handle input BIGNUMs
1278 outside the expected range.
1280 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1283 [Neel Mehta, Bodo Moeller]
1285 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1286 the load fails. Useful for distros.
1287 [Ben Laurie and the FreeBSD team]
1289 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1292 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1295 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1297 This work was sponsored by Logica.
1300 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1301 keystores. Support for SSL/TLS client authentication too.
1302 Not compiled unless enable-capieng specified to Configure.
1304 This work was sponsored by Logica.
1307 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1308 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1309 attribute creation routines such as certifcate requests and PKCS#12
1313 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1315 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1316 handshake which could lead to a cilent crash as found using the
1317 Codenomicon TLS test suite (CVE-2008-1672)
1318 [Steve Henson, Mark Cox]
1320 *) Fix double free in TLS server name extensions which could lead to
1321 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1324 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1326 Clear the error queue to ensure that error entries left from
1327 older function calls do not interfere with the correct operation.
1328 [Lutz Jaenicke, Erik de Castro Lopo]
1330 *) Remove root CA certificates of commercial CAs:
1332 The OpenSSL project does not recommend any specific CA and does not
1333 have any policy with respect to including or excluding any CA.
1334 Therefore it does not make any sense to ship an arbitrary selection
1335 of root CA certificates with the OpenSSL software.
1338 *) RSA OAEP patches to fix two separate invalid memory reads.
1339 The first one involves inputs when 'lzero' is greater than
1340 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1341 before the beginning of from). The second one involves inputs where
1342 the 'db' section contains nothing but zeroes (there is a one-byte
1343 invalid read after the end of 'db').
1344 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1346 *) Partial backport from 0.9.9-dev:
1348 Introduce bn_mul_mont (dedicated Montgomery multiplication
1349 procedure) as a candidate for BIGNUM assembler implementation.
1350 While 0.9.9-dev uses assembler for various architectures, only
1351 x86_64 is available by default here in the 0.9.8 branch, and
1352 32-bit x86 is available through a compile-time setting.
1354 To try the 32-bit x86 assembler implementation, use Configure
1355 option "enable-montasm" (which exists only for this backport).
1357 As "enable-montasm" for 32-bit x86 disclaims code stability
1358 anyway, in this constellation we activate additional code
1359 backported from 0.9.9-dev for further performance improvements,
1360 namely BN_from_montgomery_word. (To enable this otherwise,
1361 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1363 [Andy Polyakov (backport partially by Bodo Moeller)]
1365 *) Add TLS session ticket callback. This allows an application to set
1366 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1367 values. This is useful for key rollover for example where several key
1368 sets may exist with different names.
1371 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1372 This was broken until now in 0.9.8 releases, such that the only way
1373 a registered ENGINE could be used (assuming it initialises
1374 successfully on the host) was to explicitly set it as the default
1375 for the relevant algorithms. This is in contradiction with 0.9.7
1376 behaviour and the documentation. With this fix, when an ENGINE is
1377 registered into a given algorithm's table of implementations, the
1378 'uptodate' flag is reset so that auto-discovery will be used next
1379 time a new context for that algorithm attempts to select an
1381 [Ian Lister (tweaked by Geoff Thorpe)]
1383 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1384 implemention in the following ways:
1386 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1389 Lack of BER streaming support means one pass streaming processing is
1390 only supported if data is detached: setting the streaming flag is
1391 ignored for embedded content.
1393 CMS support is disabled by default and must be explicitly enabled
1394 with the enable-cms configuration option.
1397 *) Update the GMP engine glue to do direct copies between BIGNUM and
1398 mpz_t when openssl and GMP use the same limb size. Otherwise the
1399 existing "conversion via a text string export" trick is still used.
1400 [Paul Sheer <paulsheer@gmail.com>]
1402 *) Zlib compression BIO. This is a filter BIO which compressed and
1403 uncompresses any data passed through it.
1406 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1407 RFC3394 compatible AES key wrapping.
1410 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1411 sets string data without copying. X509_ALGOR_set0() and
1412 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1413 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1414 from an X509_ATTRIBUTE structure optionally checking it occurs only
1415 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1419 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1420 to get the expected BN_FLG_CONSTTIME behavior.
1421 [Bodo Moeller (Google)]
1425 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1426 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1427 - added some more tests to do_tests.pl
1428 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1429 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1430 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1431 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1432 - various changes to netware.pl to enable gcc-cross builds on Win32
1434 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1435 - various changes to fix missing prototype warnings
1436 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1437 - added AES, WHIRLPOOL and CPUID assembler code to build files
1438 - added missing AES assembler make rules to mk1mf.pl
1439 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1440 [Guenter Knauf <eflash@gmx.net>]
1442 *) Implement certificate status request TLS extension defined in RFC3546.
1443 A client can set the appropriate parameters and receive the encoded
1444 OCSP response via a callback. A server can query the supplied parameters
1445 and set the encoded OCSP response in the callback. Add simplified examples
1446 to s_client and s_server.
1449 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1451 *) Fix various bugs:
1452 + Binary incompatibility of ssl_ctx_st structure
1453 + DTLS interoperation with non-compliant servers
1454 + Don't call get_session_cb() without proposed session
1455 + Fix ia64 assembler code
1456 [Andy Polyakov, Steve Henson]
1458 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1460 *) DTLS Handshake overhaul. There were longstanding issues with
1461 OpenSSL DTLS implementation, which were making it impossible for
1462 RFC 4347 compliant client to communicate with OpenSSL server.
1463 Unfortunately just fixing these incompatibilities would "cut off"
1464 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1465 server keeps tolerating non RFC compliant syntax. The opposite is
1466 not true, 0.9.8f client can not communicate with earlier server.
1467 This update even addresses CVE-2007-4995.
1470 *) Changes to avoid need for function casts in OpenSSL: some compilers
1471 (gcc 4.2 and later) reject their use.
1472 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1475 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1476 RFC4507bis. The encrypted ticket format is an encrypted encoded
1477 SSL_SESSION structure, that way new session features are automatically
1480 If a client application caches session in an SSL_SESSION structure
1481 support is transparent because tickets are now stored in the encoded
1484 The SSL_CTX structure automatically generates keys for ticket
1485 protection in servers so again support should be possible
1486 with no application modification.
1488 If a client or server wishes to disable RFC4507 support then the option
1489 SSL_OP_NO_TICKET can be set.
1491 Add a TLS extension debugging callback to allow the contents of any client
1492 or server extensions to be examined.
1494 This work was sponsored by Google.
1497 *) Add initial support for TLS extensions, specifically for the server_name
1498 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1499 have new members for a host name. The SSL data structure has an
1500 additional member SSL_CTX *initial_ctx so that new sessions can be
1501 stored in that context to allow for session resumption, even after the
1502 SSL has been switched to a new SSL_CTX in reaction to a client's
1503 server_name extension.
1505 New functions (subject to change):
1507 SSL_get_servername()
1508 SSL_get_servername_type()
1511 New CTRL codes and macros (subject to change):
1513 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1514 - SSL_CTX_set_tlsext_servername_callback()
1515 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1516 - SSL_CTX_set_tlsext_servername_arg()
1517 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1519 openssl s_client has a new '-servername ...' option.
1521 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1522 '-key2 ...', '-servername_fatal' (subject to change). This allows
1523 testing the HostName extension for a specific single host name ('-cert'
1524 and '-key' remain fallbacks for handshakes without HostName
1525 negotiation). If the unrecogninzed_name alert has to be sent, this by
1526 default is a warning; it becomes fatal with the '-servername_fatal'
1529 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1531 *) Add AES and SSE2 assembly language support to VC++ build.
1534 *) Mitigate attack on final subtraction in Montgomery reduction.
1537 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1538 (which previously caused an internal error).
1541 *) Squeeze another 10% out of IGE mode when in != out.
1544 *) AES IGE mode speedup.
1545 [Dean Gaudet (Google)]
1547 *) Add the Korean symmetric 128-bit cipher SEED (see
1548 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1549 add SEED ciphersuites from RFC 4162:
1551 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1552 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1553 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1554 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1556 To minimize changes between patchlevels in the OpenSSL 0.9.8
1557 series, SEED remains excluded from compilation unless OpenSSL
1558 is configured with 'enable-seed'.
1559 [KISA, Bodo Moeller]
1561 *) Mitigate branch prediction attacks, which can be practical if a
1562 single processor is shared, allowing a spy process to extract
1563 information. For detailed background information, see
1564 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1565 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1566 and Necessary Software Countermeasures"). The core of the change
1567 are new versions BN_div_no_branch() and
1568 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1569 respectively, which are slower, but avoid the security-relevant
1570 conditional branches. These are automatically called by BN_div()
1571 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1572 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1573 remove a conditional branch.
1575 BN_FLG_CONSTTIME is the new name for the previous
1576 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1577 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1578 in the exponent causes BN_mod_exp_mont() to use the alternative
1579 implementation in BN_mod_exp_mont_consttime().) The old name
1580 remains as a deprecated alias.
1582 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1583 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1584 constant-time implementations for more than just exponentiation.
1585 Here too the old name is kept as a deprecated alias.
1587 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1588 the BN_BLINDING structure gets an independent copy of the
1589 modulus. This means that the previous "BIGNUM *m" argument to
1590 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1591 essentially becomes "const BIGNUM *m", although we can't actually
1592 change this in the header file before 0.9.9. It allows
1593 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1594 enable BN_FLG_CONSTTIME.
1596 [Matthew D Wood (Intel Corp)]
1598 *) In the SSL/TLS server implementation, be strict about session ID
1599 context matching (which matters if an application uses a single
1600 external cache for different purposes). Previously,
1601 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1602 set. This did ensure strict client verification, but meant that,
1603 with applications using a single external cache for quite
1604 different requirements, clients could circumvent ciphersuite
1605 restrictions for a given session ID context by starting a session
1606 in a different context.
1609 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1610 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1611 authentication-only ciphersuites.
1614 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1615 not complete and could lead to a possible single byte overflow
1616 (CVE-2007-5135) [Ben Laurie]
1618 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1620 *) Since AES128 and AES256 (and similarly Camellia128 and
1621 Camellia256) share a single mask bit in the logic of
1622 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1623 kludge to work properly if AES128 is available and AES256 isn't
1624 (or if Camellia128 is available and Camellia256 isn't).
1627 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1628 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1629 When a point or a seed is encoded in a BIT STRING, we need to
1630 prevent the removal of trailing zero bits to get the proper DER
1631 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1632 of a NamedBitList, for which trailing 0 bits need to be removed.)
1635 *) Have SSL/TLS server implementation tolerate "mismatched" record
1636 protocol version while receiving ClientHello even if the
1637 ClientHello is fragmented. (The server can't insist on the
1638 particular protocol version it has chosen before the ServerHello
1639 message has informed the client about his choice.)
1642 *) Add RFC 3779 support.
1643 [Rob Austein for ARIN, Ben Laurie]
1645 *) Load error codes if they are not already present instead of using a
1646 static variable. This allows them to be cleanly unloaded and reloaded.
1647 Improve header file function name parsing.
1650 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1651 or CAPABILITY handshake as required by RFCs.
1654 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1656 *) Introduce limits to prevent malicious keys being able to
1657 cause a denial of service. (CVE-2006-2940)
1658 [Steve Henson, Bodo Moeller]
1660 *) Fix ASN.1 parsing of certain invalid structures that can result
1661 in a denial of service. (CVE-2006-2937) [Steve Henson]
1663 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1664 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1666 *) Fix SSL client code which could crash if connecting to a
1667 malicious SSLv2 server. (CVE-2006-4343)
1668 [Tavis Ormandy and Will Drewry, Google Security Team]
1670 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1671 match only those. Before that, "AES256-SHA" would be interpreted
1672 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1673 the same strength classification in 0.9.7h) as we currently only
1674 have a single AES bit in the ciphersuite description bitmap.
1675 That change, however, also applied to ciphersuite strings such as
1676 "RC4-MD5" that intentionally matched multiple ciphersuites --
1677 namely, SSL 2.0 ciphersuites in addition to the more common ones
1678 from SSL 3.0/TLS 1.0.
1680 So we change the selection algorithm again: Naming an explicit
1681 ciphersuite selects this one ciphersuite, and any other similar
1682 ciphersuite (same bitmap) from *other* protocol versions.
1683 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1684 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1686 Since SSL 2.0 does not have any ciphersuites for which the
1687 128/256 bit distinction would be relevant, this works for now.
1688 The proper fix will be to use different bits for AES128 and
1689 AES256, which would have avoided the problems from the beginning;
1690 however, bits are scarce, so we can only do this in a new release
1691 (not just a patchlevel) when we can change the SSL_CIPHER
1692 definition to split the single 'unsigned long mask' bitmap into
1693 multiple values to extend the available space.
1697 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1699 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1700 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1702 *) Add AES IGE and biIGE modes.
1705 *) Change the Unix randomness entropy gathering to use poll() when
1706 possible instead of select(), since the latter has some
1707 undesirable limitations.
1708 [Darryl Miles via Richard Levitte and Bodo Moeller]
1710 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1711 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1712 cannot be implicitly activated as part of, e.g., the "AES" alias.
1713 However, please upgrade to OpenSSL 0.9.9[-dev] for
1714 non-experimental use of the ECC ciphersuites to get TLS extension
1715 support, which is required for curve and point format negotiation
1716 to avoid potential handshake problems.
1719 *) Disable rogue ciphersuites:
1721 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1722 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1723 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1725 The latter two were purportedly from
1726 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1729 Also deactivate the remaining ciphersuites from
1730 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1731 unofficial, and the ID has long expired.
1734 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1735 dual-core machines) and other potential thread-safety issues.
1738 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1739 versions), which is now available for royalty-free use
1740 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1741 Also, add Camellia TLS ciphersuites from RFC 4132.
1743 To minimize changes between patchlevels in the OpenSSL 0.9.8
1744 series, Camellia remains excluded from compilation unless OpenSSL
1745 is configured with 'enable-camellia'.
1748 *) Disable the padding bug check when compression is in use. The padding
1749 bug check assumes the first packet is of even length, this is not
1750 necessarily true if compresssion is enabled and can result in false
1751 positives causing handshake failure. The actual bug test is ancient
1752 code so it is hoped that implementations will either have fixed it by
1753 now or any which still have the bug do not support compression.
1756 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1758 *) When applying a cipher rule check to see if string match is an explicit
1759 cipher suite and only match that one cipher suite if it is.
1762 *) Link in manifests for VC++ if needed.
1763 [Austin Ziegler <halostatue@gmail.com>]
1765 *) Update support for ECC-based TLS ciphersuites according to
1766 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1767 TLS extensions, which are supported starting with the 0.9.9
1768 branch, not in the OpenSSL 0.9.8 branch).
1771 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1772 opaque EVP_CIPHER_CTX handling.
1775 *) Fixes and enhancements to zlib compression code. We now only use
1776 "zlib1.dll" and use the default __cdecl calling convention on Win32
1777 to conform with the standards mentioned here:
1778 http://www.zlib.net/DLL_FAQ.txt
1779 Static zlib linking now works on Windows and the new --with-zlib-include
1780 --with-zlib-lib options to Configure can be used to supply the location
1781 of the headers and library. Gracefully handle case where zlib library
1785 *) Several fixes and enhancements to the OID generation code. The old code
1786 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1787 handle numbers larger than ULONG_MAX, truncated printing and had a
1788 non standard OBJ_obj2txt() behaviour.
1791 *) Add support for building of engines under engine/ as shared libraries
1792 under VC++ build system.
1795 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1796 Hopefully, we will not see any false combination of paths any more.
1799 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1801 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1802 (part of SSL_OP_ALL). This option used to disable the
1803 countermeasure against man-in-the-middle protocol-version
1804 rollback in the SSL 2.0 server implementation, which is a bad
1805 idea. (CVE-2005-2969)
1807 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1808 for Information Security, National Institute of Advanced Industrial
1809 Science and Technology [AIST], Japan)]
1811 *) Add two function to clear and return the verify parameter flags.
1814 *) Keep cipherlists sorted in the source instead of sorting them at
1815 runtime, thus removing the need for a lock.
1818 *) Avoid some small subgroup attacks in Diffie-Hellman.
1819 [Nick Mathewson and Ben Laurie]
1821 *) Add functions for well-known primes.
1824 *) Extended Windows CE support.
1825 [Satoshi Nakamura and Andy Polyakov]
1827 *) Initialize SSL_METHOD structures at compile time instead of during
1828 runtime, thus removing the need for a lock.
1831 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1832 attempting to decrypt each encrypted key in turn. Add support to
1836 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1838 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1841 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1844 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1845 key into the same file any more.
1848 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1851 *) Add -utf8 command line and config file option to 'ca'.
1852 [Stefan <stf@udoma.org]
1854 *) Removed the macro des_crypt(), as it seems to conflict with some
1855 libraries. Use DES_crypt().
1858 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1859 involves renaming the source and generated shared-libs for
1860 both. The engines will accept the corrected or legacy ids
1861 ('ncipher' and '4758_cca' respectively) when binding. NB,
1862 this only applies when building 'shared'.
1863 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1865 *) Add attribute functions to EVP_PKEY structure. Modify
1866 PKCS12_create() to recognize a CSP name attribute and
1867 use it. Make -CSP option work again in pkcs12 utility.
1870 *) Add new functionality to the bn blinding code:
1871 - automatic re-creation of the BN_BLINDING parameters after
1872 a fixed number of uses (currently 32)
1873 - add new function for parameter creation
1874 - introduce flags to control the update behaviour of the
1875 BN_BLINDING parameters
1876 - hide BN_BLINDING structure
1877 Add a second BN_BLINDING slot to the RSA structure to improve
1878 performance when a single RSA object is shared among several
1882 *) Add support for DTLS.
1883 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1885 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1886 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1889 *) Remove buggy and incompletet DH cert support from
1890 ssl/ssl_rsa.c and ssl/s3_both.c
1893 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1894 the apps/openssl applications.
1897 *) Compile clean with "-Wall -Wmissing-prototypes
1898 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1899 DEBUG_SAFESTACK must also be set.
1902 *) Change ./Configure so that certain algorithms can be disabled by default.
1903 The new counterpiece to "no-xxx" is "enable-xxx".
1905 The patented RC5 and MDC2 algorithms will now be disabled unless
1906 "enable-rc5" and "enable-mdc2", respectively, are specified.
1908 (IDEA remains enabled despite being patented. This is because IDEA
1909 is frequently required for interoperability, and there is no license
1910 fee for non-commercial use. As before, "no-idea" can be used to
1911 avoid this algorithm.)
1915 *) Add processing of proxy certificates (see RFC 3820). This work was
1916 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1917 EGEE (Enabling Grids for E-science in Europe).
1920 *) RC4 performance overhaul on modern architectures/implementations, such
1921 as Intel P4, IA-64 and AMD64.
1924 *) New utility extract-section.pl. This can be used specify an alternative
1925 section number in a pod file instead of having to treat each file as
1926 a separate case in Makefile. This can be done by adding two lines to the
1929 =for comment openssl_section:XXX
1931 The blank line is mandatory.
1935 *) New arguments -certform, -keyform and -pass for s_client and s_server
1936 to allow alternative format key and certificate files and passphrase
1940 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
1941 update associated structures and add various utility functions.
1943 Add new policy related verify parameters, include policy checking in
1944 standard verify code. Enhance 'smime' application with extra parameters
1945 to support policy checking and print out.
1948 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
1949 Nehemiah processors. These extensions support AES encryption in hardware
1950 as well as RNG (though RNG support is currently disabled).
1951 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
1953 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
1956 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
1957 [Andy Polyakov and a number of other people]
1959 *) Improved PowerPC platform support. Most notably BIGNUM assembler
1960 implementation contributed by IBM.
1961 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
1963 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
1964 exponent rather than 'unsigned long'. There is a corresponding change to
1965 the new 'rsa_keygen' element of the RSA_METHOD structure.
1966 [Jelte Jansen, Geoff Thorpe]
1968 *) Functionality for creating the initial serial number file is now
1969 moved from CA.pl to the 'ca' utility with a new option -create_serial.
1971 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
1972 number file to 1, which is bound to cause problems. To avoid
1973 the problems while respecting compatibility between different 0.9.7
1974 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
1975 CA.pl for serial number initialization. With the new release 0.9.8,
1976 we can fix the problem directly in the 'ca' utility.)
1979 *) Reduced header interdepencies by declaring more opaque objects in
1980 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
1981 give fewer recursive includes, which could break lazy source code - so
1982 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
1983 developers should define this symbol when building and using openssl to
1984 ensure they track the recommended behaviour, interfaces, [etc], but
1985 backwards-compatible behaviour prevails when this isn't defined.
1988 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
1991 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
1992 This will generate a random key of the appropriate length based on the
1993 cipher context. The EVP_CIPHER can provide its own random key generation
1994 routine to support keys of a specific form. This is used in the des and
1995 3des routines to generate a key of the correct parity. Update S/MIME
1996 code to use new functions and hence generate correct parity DES keys.
1997 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
1998 valid (weak or incorrect parity).
2001 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2002 as looking them up. This is useful when the verified structure may contain
2003 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2004 present unless the new PKCS7_NO_CRL flag is asserted.
2007 *) Extend ASN1 oid configuration module. It now additionally accepts the
2010 shortName = some long name, 1.2.3.4
2013 *) Reimplemented the BN_CTX implementation. There is now no more static
2014 limitation on the number of variables it can handle nor the depth of the
2015 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2016 information can now expand as required, and rather than having a single
2017 static array of bignums, BN_CTX now uses a linked-list of such arrays
2018 allowing it to expand on demand whilst maintaining the usefulness of
2019 BN_CTX's "bundling".
2022 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2023 to allow all RSA operations to function using a single BN_CTX.
2026 *) Preliminary support for certificate policy evaluation and checking. This
2027 is initially intended to pass the tests outlined in "Conformance Testing
2028 of Relying Party Client Certificate Path Processing Logic" v1.07.
2031 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2032 remained unused and not that useful. A variety of other little bignum
2033 tweaks and fixes have also been made continuing on from the audit (see
2037 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2038 associated ASN1, EVP and SSL functions and old ASN1 macros.
2041 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2042 and this should never fail. So the return value from the use of
2043 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2044 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2047 *) BN_CTX_get() should return zero-valued bignums, providing the same
2048 initialised value as BN_new().
2049 [Geoff Thorpe, suggested by Ulf Möller]
2051 *) Support for inhibitAnyPolicy certificate extension.
2054 *) An audit of the BIGNUM code is underway, for which debugging code is
2055 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2056 is considered valid when processing BIGNUMs, and causes execution to
2057 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2058 further steps are taken to deliberately pollute unused data in BIGNUM
2059 structures to try and expose faulty code further on. For now, openssl will
2060 (in its default mode of operation) continue to tolerate the inconsistent
2061 forms that it has tolerated in the past, but authors and packagers should
2062 consider trying openssl and their own applications when compiled with
2063 these debugging symbols defined. It will help highlight potential bugs in
2064 their own code, and will improve the test coverage for OpenSSL itself. At
2065 some point, these tighter rules will become openssl's default to improve
2066 maintainability, though the assert()s and other overheads will remain only
2067 in debugging configurations. See bn.h for more details.
2068 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2070 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2071 that can only be obtained through BN_CTX_new() (which implicitly
2072 initialises it). The presence of this function only made it possible
2073 to overwrite an existing structure (and cause memory leaks).
2076 *) Because of the callback-based approach for implementing LHASH as a
2077 template type, lh_insert() adds opaque objects to hash-tables and
2078 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2079 to clean up those corresponding objects before destroying the hash table
2080 (and losing the object pointers). So some over-zealous constifications in
2081 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2082 objects as "const" and the lh_doall[_arg] callback wrappers are not
2083 prototyped to have "const" restrictions on the object pointers they are
2084 given (and so aren't required to cast them away any more).
2087 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2088 (speed) prefers to use its own implementation. The two implementations
2089 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2090 its object type properly exposed (MS_TM) instead of casting to/from "char
2091 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2092 aren't necessarily the greatest nomenclatures - but this is what was used
2093 internally to the implementation so I've used that for now.
2096 *) Ensure that deprecated functions do not get compiled when
2097 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2098 the self-tests were still using deprecated key-generation functions so
2099 these have been updated also.
2102 *) Reorganise PKCS#7 code to separate the digest location functionality
2103 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2104 New function PKCS7_set_digest() to set the digest type for PKCS#7
2105 digestedData type. Add additional code to correctly generate the
2106 digestedData type and add support for this type in PKCS7 initialization
2110 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2111 structure of type "other".
2114 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2115 sure the loop does correctly stop and breaking ("division by zero")
2116 modulus operations are not performed. The (pre-generated) prime
2117 table crypto/bn/bn_prime.h was already correct, but it could not be
2118 re-generated on some platforms because of the "division by zero"
2119 situation in the script.
2120 [Ralf S. Engelschall]
2122 *) Update support for ECC-based TLS ciphersuites according to
2123 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2124 SHA-1 now is only used for "small" curves (where the
2125 representation of a field element takes up to 24 bytes); for
2126 larger curves, the field element resulting from ECDH is directly
2127 used as premaster secret.
2128 [Douglas Stebila (Sun Microsystems Laboratories)]
2130 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2131 curve secp160r1 to the tests.
2132 [Douglas Stebila (Sun Microsystems Laboratories)]
2134 *) Add the possibility to load symbols globally with DSO.
2135 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2137 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2138 control of the error stack.
2141 *) Add support for STORE in ENGINE.
2144 *) Add the STORE type. The intention is to provide a common interface
2145 to certificate and key stores, be they simple file-based stores, or
2146 HSM-type store, or LDAP stores, or...
2147 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2150 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2151 pass a list of arguments to any function as well as provide a way
2152 for a function to pass data back to the caller.
2155 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2156 works like BUF_strdup() but can be used to duplicate a portion of
2157 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2161 *) Add the function sk_find_ex() which works like sk_find(), but will
2162 return an index to an element even if an exact match couldn't be
2163 found. The index is guaranteed to point at the element where the
2164 searched-for key would be inserted to preserve sorting order.
2167 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2168 takes an extra flags argument for optional functionality. Currently,
2169 the following flags are defined:
2171 OBJ_BSEARCH_VALUE_ON_NOMATCH
2172 This one gets OBJ_bsearch_ex() to return a pointer to the first
2173 element where the comparing function returns a negative or zero
2176 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2177 This one gets OBJ_bsearch_ex() to return a pointer to the first
2178 element where the comparing function returns zero. This is useful
2179 if there are more than one element where the comparing function
2183 *) Make it possible to create self-signed certificates with 'openssl ca'
2184 in such a way that the self-signed certificate becomes part of the
2185 CA database and uses the same mechanisms for serial number generation
2186 as all other certificate signing. The new flag '-selfsign' enables
2187 this functionality. Adapt CA.sh and CA.pl.in.
2190 *) Add functionality to check the public key of a certificate request
2191 against a given private. This is useful to check that a certificate
2192 request can be signed by that key (self-signing).
2195 *) Make it possible to have multiple active certificates with the same
2196 subject in the CA index file. This is done only if the keyword
2197 'unique_subject' is set to 'no' in the main CA section (default
2198 if 'CA_default') of the configuration file. The value is saved
2199 with the database itself in a separate index attribute file,
2200 named like the index file with '.attr' appended to the name.
2203 *) Generate muti valued AVAs using '+' notation in config files for
2207 *) Support for nameConstraints certificate extension.
2210 *) Support for policyConstraints certificate extension.
2213 *) Support for policyMappings certificate extension.
2216 *) Make sure the default DSA_METHOD implementation only uses its
2217 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2218 and change its own handlers to be NULL so as to remove unnecessary
2219 indirection. This lets alternative implementations fallback to the
2220 default implementation more easily.
2223 *) Support for directoryName in GeneralName related extensions
2227 *) Make it possible to link applications using Makefile.shared.
2228 Make that possible even when linking against static libraries!
2231 *) Support for single pass processing for S/MIME signing. This now
2232 means that S/MIME signing can be done from a pipe, in addition
2233 cleartext signing (multipart/signed type) is effectively streaming
2234 and the signed data does not need to be all held in memory.
2236 This is done with a new flag PKCS7_STREAM. When this flag is set
2237 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2238 is done after the data is output (and digests calculated) in
2239 SMIME_write_PKCS7().
2242 *) Add full support for -rpath/-R, both in shared libraries and
2243 applications, at least on the platforms where it's known how
2247 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2248 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2249 will now compute a table of multiples of the generator that
2250 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2251 faster (notably in the case of a single point multiplication,
2252 scalar * generator).
2253 [Nils Larsch, Bodo Moeller]
2255 *) IPv6 support for certificate extensions. The various extensions
2256 which use the IP:a.b.c.d can now take IPv6 addresses using the
2257 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2261 *) Added an ENGINE that implements RSA by performing private key
2262 exponentiations with the GMP library. The conversions to and from
2263 GMP's mpz_t format aren't optimised nor are any montgomery forms
2264 cached, and on x86 it appears OpenSSL's own performance has caught up.
2265 However there are likely to be other architectures where GMP could
2266 provide a boost. This ENGINE is not built in by default, but it can be
2267 specified at Configure time and should be accompanied by the necessary
2268 linker additions, eg;
2269 ./config -DOPENSSL_USE_GMP -lgmp
2272 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2273 testing availability of engines with "-t" - the old behaviour is
2274 produced by increasing the feature's verbosity with "-tt".
2277 *) ECDSA routines: under certain error conditions uninitialized BN objects
2278 could be freed. Solution: make sure initialization is performed early
2279 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2283 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2284 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2285 software implementations. For DSA and DH, parameter generation can
2286 also be overriden by providing the appropriate method callbacks.
2289 *) Change the "progress" mechanism used in key-generation and
2290 primality testing to functions that take a new BN_GENCB pointer in
2291 place of callback/argument pairs. The new API functions have "_ex"
2292 postfixes and the older functions are reimplemented as wrappers for
2293 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2294 declarations of the old functions to help (graceful) attempts to
2295 migrate to the new functions. Also, the new key-generation API
2296 functions operate on a caller-supplied key-structure and return
2297 success/failure rather than returning a key or NULL - this is to
2298 help make "keygen" another member function of RSA_METHOD etc.
2300 Example for using the new callback interface:
2302 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2306 BN_GENCB_set(&my_cb, my_callback, my_arg);
2308 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2309 /* For the meaning of a, b in calls to my_callback(), see the
2310 * documentation of the function that calls the callback.
2311 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2312 * my_callback should return 1 if it wants BN_is_prime_ex()
2313 * to continue, or 0 to stop.
2318 *) Change the ZLIB compression method to be stateful, and make it
2319 available to TLS with the number defined in
2320 draft-ietf-tls-compression-04.txt.
2323 *) Add the ASN.1 structures and functions for CertificatePair, which
2324 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2326 CertificatePair ::= SEQUENCE {
2327 forward [0] Certificate OPTIONAL,
2328 reverse [1] Certificate OPTIONAL,
2329 -- at least one of the pair shall be present -- }
2331 Also implement the PEM functions to read and write certificate
2332 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2334 This needed to be defined, mostly for the sake of the LDAP
2335 attribute crossCertificatePair, but may prove useful elsewhere as
2339 *) Make it possible to inhibit symlinking of shared libraries in
2340 Makefile.shared, for Cygwin's sake.
2343 *) Extend the BIGNUM API by creating a function
2344 void BN_set_negative(BIGNUM *a, int neg);
2345 and a macro that behave like
2346 int BN_is_negative(const BIGNUM *a);
2348 to avoid the need to access 'a->neg' directly in applications.
2351 *) Implement fast modular reduction for pseudo-Mersenne primes
2352 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2353 EC_GROUP_new_curve_GFp() will now automatically use this
2355 [Nils Larsch <nla@trustcenter.de>]
2357 *) Add new lock type (CRYPTO_LOCK_BN).
2360 *) Change the ENGINE framework to automatically load engines
2361 dynamically from specific directories unless they could be
2362 found to already be built in or loaded. Move all the
2363 current engines except for the cryptodev one to a new
2365 The engines in engines/ are built as shared libraries if
2366 the "shared" options was given to ./Configure or ./config.
2367 Otherwise, they are inserted in libcrypto.a.
2368 /usr/local/ssl/engines is the default directory for dynamic
2369 engines, but that can be overriden at configure time through
2370 the usual use of --prefix and/or --openssldir, and at run
2371 time with the environment variable OPENSSL_ENGINES.
2372 [Geoff Thorpe and Richard Levitte]
2374 *) Add Makefile.shared, a helper makefile to build shared
2375 libraries. Addapt Makefile.org.
2378 *) Add version info to Win32 DLLs.
2379 [Peter 'Luna' Runestig" <peter@runestig.com>]
2381 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2382 can be added using this API to created arbitrary PKCS#12
2383 files while avoiding the low level API.
2385 New options to PKCS12_create(), key or cert can be NULL and
2386 will then be omitted from the output file. The encryption
2387 algorithm NIDs can be set to -1 for no encryption, the mac
2388 iteration count can be set to 0 to omit the mac.
2390 Enhance pkcs12 utility by making the -nokeys and -nocerts
2391 options work when creating a PKCS#12 file. New option -nomac
2392 to omit the mac, NONE can be set for an encryption algorithm.
2393 New code is modified to use the enhanced PKCS12_create()
2394 instead of the low level API.
2397 *) Extend ASN1 encoder to support indefinite length constructed
2398 encoding. This can output sequences tags and octet strings in
2399 this form. Modify pk7_asn1.c to support indefinite length
2400 encoding. This is experimental and needs additional code to
2401 be useful, such as an ASN1 bio and some enhanced streaming
2404 Extend template encode functionality so that tagging is passed
2405 down to the template encoder.
2408 *) Let 'openssl req' fail if an argument to '-newkey' is not
2409 recognized instead of using RSA as a default.
2412 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2413 As these are not official, they are not included in "ALL";
2414 the "ECCdraft" ciphersuite group alias can be used to select them.
2415 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2417 *) Add ECDH engine support.
2418 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2420 *) Add ECDH in new directory crypto/ecdh/.
2421 [Douglas Stebila (Sun Microsystems Laboratories)]
2423 *) Let BN_rand_range() abort with an error after 100 iterations
2424 without success (which indicates a broken PRNG).
2427 *) Change BN_mod_sqrt() so that it verifies that the input value
2428 is really the square of the return value. (Previously,
2429 BN_mod_sqrt would show GIGO behaviour.)
2432 *) Add named elliptic curves over binary fields from X9.62, SECG,
2433 and WAP/WTLS; add OIDs that were still missing.
2435 [Sheueling Chang Shantz and Douglas Stebila
2436 (Sun Microsystems Laboratories)]
2438 *) Extend the EC library for elliptic curves over binary fields
2439 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2442 EC_GF2m_simple_method
2446 EC_GROUP_new_curve_GF2m
2447 EC_GROUP_set_curve_GF2m
2448 EC_GROUP_get_curve_GF2m
2449 EC_POINT_set_affine_coordinates_GF2m
2450 EC_POINT_get_affine_coordinates_GF2m
2451 EC_POINT_set_compressed_coordinates_GF2m
2453 Point compression for binary fields is disabled by default for
2454 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2457 As binary polynomials are represented as BIGNUMs, various members
2458 of the EC_GROUP and EC_POINT data structures can be shared
2459 between the implementations for prime fields and binary fields;
2460 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2461 are essentially identical to their ..._GFp counterparts.
2462 (For simplicity, the '..._GFp' prefix has been dropped from
2463 various internal method names.)
2465 An internal 'field_div' method (similar to 'field_mul' and
2466 'field_sqr') has been added; this is used only for binary fields.
2468 [Sheueling Chang Shantz and Douglas Stebila
2469 (Sun Microsystems Laboratories)]
2471 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2472 through methods ('mul', 'precompute_mult').
2474 The generic implementations (now internally called 'ec_wNAF_mul'
2475 and 'ec_wNAF_precomputed_mult') remain the default if these
2476 methods are undefined.
2478 [Sheueling Chang Shantz and Douglas Stebila
2479 (Sun Microsystems Laboratories)]
2481 *) New function EC_GROUP_get_degree, which is defined through
2482 EC_METHOD. For curves over prime fields, this returns the bit
2483 length of the modulus.
2485 [Sheueling Chang Shantz and Douglas Stebila
2486 (Sun Microsystems Laboratories)]
2488 *) New functions EC_GROUP_dup, EC_POINT_dup.
2489 (These simply call ..._new and ..._copy).
2491 [Sheueling Chang Shantz and Douglas Stebila
2492 (Sun Microsystems Laboratories)]
2494 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2495 Polynomials are represented as BIGNUMs (where the sign bit is not
2496 used) in the following functions [macros]:
2499 BN_GF2m_sub [= BN_GF2m_add]
2500 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2501 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2502 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2504 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2505 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2506 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2507 BN_GF2m_cmp [= BN_ucmp]
2509 (Note that only the 'mod' functions are actually for fields GF(2^m).
2510 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2512 For some functions, an the irreducible polynomial defining a
2513 field can be given as an 'unsigned int[]' with strictly
2514 decreasing elements giving the indices of those bits that are set;
2515 i.e., p[] represents the polynomial
2516 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2518 p[0] > p[1] > ... > p[k] = 0.
2519 This applies to the following functions:
2524 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2525 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2527 BN_GF2m_mod_sqrt_arr
2528 BN_GF2m_mod_solve_quad_arr
2532 Conversion can be performed by the following functions:
2537 bntest.c has additional tests for binary polynomial arithmetic.
2539 Two implementations for BN_GF2m_mod_div() are available.
2540 The default algorithm simply uses BN_GF2m_mod_inv() and
2541 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2542 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2543 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2545 [Sheueling Chang Shantz and Douglas Stebila
2546 (Sun Microsystems Laboratories)]
2548 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2549 functionality is disabled at compile-time.
2550 [Douglas Stebila <douglas.stebila@sun.com>]
2552 *) Change default behaviour of 'openssl asn1parse' so that more
2553 information is visible when viewing, e.g., a certificate:
2555 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2556 mode the content of non-printable OCTET STRINGs is output in a
2557 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2558 avoid the appearance of a printable string.
2559 [Nils Larsch <nla@trustcenter.de>]
2561 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2563 EC_GROUP_set_asn1_flag()
2564 EC_GROUP_get_asn1_flag()
2565 EC_GROUP_set_point_conversion_form()
2566 EC_GROUP_get_point_conversion_form()
2567 These control ASN1 encoding details:
2568 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2569 has been set to OPENSSL_EC_NAMED_CURVE.
2570 - Points are encoded in uncompressed form by default; options for
2571 asn1_for are as for point2oct, namely
2572 POINT_CONVERSION_COMPRESSED
2573 POINT_CONVERSION_UNCOMPRESSED
2574 POINT_CONVERSION_HYBRID
2576 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2579 EC_GROUP_get0_seed()
2580 EC_GROUP_get_seed_len()
2581 This is used only for ASN1 purposes (so far).
2582 [Nils Larsch <nla@trustcenter.de>]
2584 *) Add 'field_type' member to EC_METHOD, which holds the NID
2585 of the appropriate field type OID. The new function
2586 EC_METHOD_get_field_type() returns this value.
2587 [Nils Larsch <nla@trustcenter.de>]
2592 EC_POINT_point2hex()
2593 EC_POINT_hex2point()
2594 providing useful interfaces to EC_POINT_point2oct() and
2595 EC_POINT_oct2point().
2596 [Nils Larsch <nla@trustcenter.de>]
2598 *) Change internals of the EC library so that the functions
2599 EC_GROUP_set_generator()
2600 EC_GROUP_get_generator()
2601 EC_GROUP_get_order()
2602 EC_GROUP_get_cofactor()
2603 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2604 to methods, which would lead to unnecessary code duplication when
2605 adding different types of curves.
2606 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2608 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2609 arithmetic, and such that modified wNAFs are generated
2610 (which avoid length expansion in many cases).
2613 *) Add a function EC_GROUP_check_discriminant() (defined via
2614 EC_METHOD) that verifies that the curve discriminant is non-zero.
2616 Add a function EC_GROUP_check() that makes some sanity tests
2617 on a EC_GROUP, its generator and order. This includes
2618 EC_GROUP_check_discriminant().
2619 [Nils Larsch <nla@trustcenter.de>]
2621 *) Add ECDSA in new directory crypto/ecdsa/.
2623 Add applications 'openssl ecparam' and 'openssl ecdsa'
2624 (these are based on 'openssl dsaparam' and 'openssl dsa').
2626 ECDSA support is also included in various other files across the
2627 library. Most notably,
2628 - 'openssl req' now has a '-newkey ecdsa:file' option;
2629 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2630 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2631 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2632 them suitable for ECDSA where domain parameters must be
2633 extracted before the specific public key;
2634 - ECDSA engine support has been added.
2635 [Nils Larsch <nla@trustcenter.de>]
2637 *) Include some named elliptic curves, and add OIDs from X9.62,
2638 SECG, and WAP/WTLS. Each curve can be obtained from the new
2640 EC_GROUP_new_by_curve_name(),
2641 and the list of available named curves can be obtained with
2642 EC_get_builtin_curves().
2643 Also add a 'curve_name' member to EC_GROUP objects, which can be
2645 EC_GROUP_set_curve_name()
2646 EC_GROUP_get_curve_name()
2647 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2649 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2650 was actually never needed) and in BN_mul(). The removal in BN_mul()
2651 required a small change in bn_mul_part_recursive() and the addition
2652 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2653 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2654 bn_sub_words() and bn_add_words() except they take arrays with
2658 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2660 *) Cleanse PEM buffers before freeing them since they may contain
2662 [Benjamin Bennett <ben@psc.edu>]
2664 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2665 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2666 authentication-only ciphersuites.
2669 *) Since AES128 and AES256 share a single mask bit in the logic of
2670 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2671 kludge to work properly if AES128 is available and AES256 isn't.
2674 *) Expand security boundary to match 1.1.1 module.
2677 *) Remove redundant features: hash file source, editing of test vectors
2678 modify fipsld to use external fips_premain.c signature.
2681 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2682 run algorithm test programs.
2685 *) Make algorithm test programs more tolerant of whitespace.
2688 *) Have SSL/TLS server implementation tolerate "mismatched" record
2689 protocol version while receiving ClientHello even if the
2690 ClientHello is fragmented. (The server can't insist on the
2691 particular protocol version it has chosen before the ServerHello
2692 message has informed the client about his choice.)
2695 *) Load error codes if they are not already present instead of using a
2696 static variable. This allows them to be cleanly unloaded and reloaded.
2699 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2701 *) Introduce limits to prevent malicious keys being able to
2702 cause a denial of service. (CVE-2006-2940)
2703 [Steve Henson, Bodo Moeller]
2705 *) Fix ASN.1 parsing of certain invalid structures that can result
2706 in a denial of service. (CVE-2006-2937) [Steve Henson]
2708 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2709 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2711 *) Fix SSL client code which could crash if connecting to a
2712 malicious SSLv2 server. (CVE-2006-4343)
2713 [Tavis Ormandy and Will Drewry, Google Security Team]
2715 *) Change ciphersuite string processing so that an explicit
2716 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2717 will no longer include "AES128-SHA"), and any other similar
2718 ciphersuite (same bitmap) from *other* protocol versions (so that
2719 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2720 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2721 changes from 0.9.8b and 0.9.8d.
2724 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2726 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2727 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2729 *) Change the Unix randomness entropy gathering to use poll() when
2730 possible instead of select(), since the latter has some
2731 undesirable limitations.
2732 [Darryl Miles via Richard Levitte and Bodo Moeller]
2734 *) Disable rogue ciphersuites:
2736 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2737 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2738 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2740 The latter two were purportedly from
2741 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2744 Also deactive the remaining ciphersuites from
2745 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2746 unofficial, and the ID has long expired.
2749 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2750 dual-core machines) and other potential thread-safety issues.
2753 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2755 *) Adapt fipsld and the build system to link against the validated FIPS
2756 module in FIPS mode.
2759 *) Fixes for VC++ 2005 build under Windows.
2762 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2763 from a Windows bash shell such as MSYS. It is autodetected from the
2764 "config" script when run from a VC++ environment. Modify standard VC++
2765 build to use fipscanister.o from the GNU make build.
2768 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2770 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2771 The value now differs depending on if you build for FIPS or not.
2772 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2773 safely run with a non-FIPSed libcrypto, as it may crash because of
2774 the difference induced by this change.
2777 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2779 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2780 (part of SSL_OP_ALL). This option used to disable the
2781 countermeasure against man-in-the-middle protocol-version
2782 rollback in the SSL 2.0 server implementation, which is a bad
2783 idea. (CVE-2005-2969)
2785 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2786 for Information Security, National Institute of Advanced Industrial
2787 Science and Technology [AIST], Japan)]
2789 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2790 mainly for FIPS compliance and not fully integrated at this stage.
2793 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2794 the exponentiation using a fixed-length exponent. (Otherwise,
2795 the information leaked through timing could expose the secret key
2796 after many signatures; cf. Bleichenbacher's attack on DSA with
2800 *) Make a new fixed-window mod_exp implementation the default for
2801 RSA, DSA, and DH private-key operations so that the sequence of
2802 squares and multiplies and the memory access pattern are
2803 independent of the particular secret key. This will mitigate
2804 cache-timing and potential related attacks.
2806 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2807 and this is automatically used by BN_mod_exp_mont() if the new flag
2808 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2809 will use this BN flag for private exponents unless the flag
2810 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2811 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2813 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2815 *) Change the client implementation for SSLv23_method() and
2816 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2817 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2818 (Previously, the SSL 2.0 backwards compatible Client Hello
2819 message format would be used even with SSL_OP_NO_SSLv2.)
2822 *) Add support for smime-type MIME parameter in S/MIME messages which some
2826 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2827 a threadsafe manner. Modify rsa code to use new function and add calls
2828 to dsa and dh code (which had race conditions before).
2831 *) Include the fixed error library code in the C error file definitions
2832 instead of fixing them up at runtime. This keeps the error code
2833 structures constant.
2836 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2838 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2841 *) Fixes for newer kerberos headers. NB: the casts are needed because
2842 the 'length' field is signed on one version and unsigned on another
2843 with no (?) obvious way to tell the difference, without these VC++
2844 complains. Also the "definition" of FAR (blank) is no longer included
2845 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2846 some needed definitions.
2849 *) Undo Cygwin change.
2852 *) Added support for proxy certificates according to RFC 3820.
2853 Because they may be a security thread to unaware applications,
2854 they must be explicitely allowed in run-time. See
2855 docs/HOWTO/proxy_certificates.txt for further information.
2858 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2860 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2861 server and client random values. Previously
2862 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2863 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2865 This change has negligible security impact because:
2867 1. Server and client random values still have 24 bytes of pseudo random
2870 2. Server and client random values are sent in the clear in the initial
2873 3. The master secret is derived using the premaster secret (48 bytes in
2874 size for static RSA ciphersuites) as well as client server and random
2877 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2880 [Stephen Henson, reported by UK NISCC]
2882 *) Use Windows randomness collection on Cygwin.
2885 *) Fix hang in EGD/PRNGD query when communication socket is closed
2886 prematurely by EGD/PRNGD.
2887 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2889 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2892 *) Back-port of selected performance improvements from development
2893 branch, as well as improved support for PowerPC platforms.
2896 *) Add lots of checks for memory allocation failure, error codes to indicate
2897 failure and freeing up memory if a failure occurs.
2898 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2900 *) Add new -passin argument to dgst.
2903 *) Perform some character comparisons of different types in X509_NAME_cmp:
2904 this is needed for some certificates that reencode DNs into UTF8Strings
2905 (in violation of RFC3280) and can't or wont issue name rollover
2909 *) Make an explicit check during certificate validation to see that
2910 the CA setting in each certificate on the chain is correct. As a
2911 side effect always do the following basic checks on extensions,
2912 not just when there's an associated purpose to the check:
2914 - if there is an unhandled critical extension (unless the user
2915 has chosen to ignore this fault)
2916 - if the path length has been exceeded (if one is set at all)
2917 - that certain extensions fit the associated purpose (if one has
2921 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2923 *) Avoid a race condition when CRLs are checked in a multi threaded
2924 environment. This would happen due to the reordering of the revoked
2925 entries during signature checking and serial number lookup. Now the
2926 encoding is cached and the serial number sort performed under a lock.
2927 Add new STACK function sk_is_sorted().
2930 *) Add Delta CRL to the extension code.
2933 *) Various fixes to s3_pkt.c so alerts are sent properly.
2934 [David Holmes <d.holmes@f5.com>]
2936 *) Reduce the chances of duplicate issuer name and serial numbers (in
2937 violation of RFC3280) using the OpenSSL certificate creation utilities.
2938 This is done by creating a random 64 bit value for the initial serial
2939 number when a serial number file is created or when a self signed
2940 certificate is created using 'openssl req -x509'. The initial serial
2941 number file is created using 'openssl x509 -next_serial' in CA.pl
2942 rather than being initialized to 1.
2945 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
2947 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2948 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
2949 [Joe Orton, Steve Henson]
2951 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
2953 [Joe Orton, Steve Henson]
2955 *) Make it possible to have multiple active certificates with the same
2956 subject in the CA index file. This is done only if the keyword
2957 'unique_subject' is set to 'no' in the main CA section (default
2958 if 'CA_default') of the configuration file. The value is saved
2959 with the database itself in a separate index attribute file,
2960 named like the index file with '.attr' appended to the name.
2963 *) X509 verify fixes. Disable broken certificate workarounds when
2964 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
2965 keyUsage extension present. Don't accept CRLs with unhandled critical
2966 extensions: since verify currently doesn't process CRL extensions this
2967 rejects a CRL with *any* critical extensions. Add new verify error codes
2971 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
2972 A clarification of RFC2560 will require the use of OCTET STRINGs and
2973 some implementations cannot handle the current raw format. Since OpenSSL
2974 copies and compares OCSP nonces as opaque blobs without any attempt at
2975 parsing them this should not create any compatibility issues.
2978 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
2979 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
2980 this HMAC (and other) operations are several times slower than OpenSSL
2984 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
2985 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2987 *) Use the correct content when signing type "other".
2990 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
2992 *) Fix various bugs revealed by running the NISCC test suite:
2994 Stop out of bounds reads in the ASN1 code when presented with
2995 invalid tags (CVE-2003-0543 and CVE-2003-0544).
2997 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
2999 If verify callback ignores invalid public key errors don't try to check
3000 certificate signature with the NULL public key.
3004 *) New -ignore_err option in ocsp application to stop the server
3005 exiting on the first error in a request.
3008 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3009 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3013 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3014 extra data after the compression methods not only for TLS 1.0
3015 but also for SSL 3.0 (as required by the specification).
3016 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3018 *) Change X509_certificate_type() to mark the key as exported/exportable
3019 when it's 512 *bits* long, not 512 bytes.
3022 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3023 blocks during encryption.
3026 *) Various fixes to base64 BIO and non blocking I/O. On write
3027 flushes were not handled properly if the BIO retried. On read
3028 data was not being buffered properly and had various logic bugs.
3029 This also affects blocking I/O when the data being decoded is a
3033 *) Various S/MIME bugfixes and compatibility changes:
3034 output correct application/pkcs7 MIME type if
3035 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3036 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3037 of files as .eml work). Correctly handle very long lines in MIME
3041 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3043 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3044 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3045 a protocol version number mismatch like a decryption error
3046 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3049 *) Turn on RSA blinding by default in the default implementation
3050 to avoid a timing attack. Applications that don't want it can call
3051 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3052 They would be ill-advised to do so in most cases.
3053 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3055 *) Change RSA blinding code so that it works when the PRNG is not
3056 seeded (in this case, the secret RSA exponent is abused as
3057 an unpredictable seed -- if it is not unpredictable, there
3058 is no point in blinding anyway). Make RSA blinding thread-safe
3059 by remembering the creator's thread ID in rsa->blinding and
3060 having all other threads use local one-time blinding factors
3061 (this requires more computation than sharing rsa->blinding, but
3062 avoids excessive locking; and if an RSA object is not shared
3063 between threads, blinding will still be very fast).
3066 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3067 ENGINE as defaults for all supported algorithms irrespective of
3068 the 'flags' parameter. 'flags' is now honoured, so applications
3069 should make sure they are passing it correctly.
3072 *) Target "mingw" now allows native Windows code to be generated in
3073 the Cygwin environment as well as with the MinGW compiler.
3076 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3078 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3079 via timing by performing a MAC computation even if incorrrect
3080 block cipher padding has been found. This is a countermeasure
3081 against active attacks where the attacker has to distinguish
3082 between bad padding and a MAC verification error. (CVE-2003-0078)
3084 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3085 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3086 Martin Vuagnoux (EPFL, Ilion)]
3088 *) Make the no-err option work as intended. The intention with no-err
3089 is not to have the whole error stack handling routines removed from
3090 libcrypto, it's only intended to remove all the function name and
3091 reason texts, thereby removing some of the footprint that may not
3092 be interesting if those errors aren't displayed anyway.
3094 NOTE: it's still possible for any application or module to have it's
3095 own set of error texts inserted. The routines are there, just not
3096 used by default when no-err is given.
3099 *) Add support for FreeBSD on IA64.
3100 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3102 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3103 Kerberos function mit_des_cbc_cksum(). Before this change,
3104 the value returned by DES_cbc_cksum() was like the one from
3105 mit_des_cbc_cksum(), except the bytes were swapped.
3106 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3108 *) Allow an application to disable the automatic SSL chain building.
3109 Before this a rather primitive chain build was always performed in
3110 ssl3_output_cert_chain(): an application had no way to send the
3111 correct chain if the automatic operation produced an incorrect result.
3113 Now the chain builder is disabled if either:
3115 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3117 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3119 The reasoning behind this is that an application would not want the
3120 auto chain building to take place if extra chain certificates are
3121 present and it might also want a means of sending no additional
3122 certificates (for example the chain has two certificates and the
3126 *) Add the possibility to build without the ENGINE framework.
3127 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3129 *) Under Win32 gmtime() can return NULL: check return value in
3130 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3133 *) DSA routines: under certain error conditions uninitialized BN objects
3134 could be freed. Solution: make sure initialization is performed early
3135 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3136 Nils Larsch <nla@trustcenter.de> via PR#459)
3139 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3140 checked on reconnect on the client side, therefore session resumption
3141 could still fail with a "ssl session id is different" error. This
3142 behaviour is masked when SSL_OP_ALL is used due to
3143 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3144 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3145 followup to PR #377.
3148 *) IA-32 assembler support enhancements: unified ELF targets, support
3149 for SCO/Caldera platforms, fix for Cygwin shared build.
3152 *) Add support for FreeBSD on sparc64. As a consequence, support for
3153 FreeBSD on non-x86 processors is separate from x86 processors on
3154 the config script, much like the NetBSD support.
3155 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3157 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3159 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3162 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3163 code (06) was taken as the first octet of the session ID and the last
3164 octet was ignored consequently. As a result SSLv2 client side session
3165 caching could not have worked due to the session ID mismatch between
3167 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3171 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3172 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3176 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3177 seems that in spite of existing for more than a year, many application
3178 author have done nothing to provide the necessary callbacks, which
3179 means that this particular engine will not work properly anywhere.
3180 This is a very unfortunate situation which forces us, in the name
3181 of usability, to give the hw_ncipher.c a static lock, which is part
3183 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3184 appear in 0.9.8 or later. We EXPECT application authors to have
3185 dealt properly with this when 0.9.8 is released (unless we actually
3186 make such changes in the libcrypto locking code that changes will
3187 have to be made anyway).
3190 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3191 octets have been read, EOF or an error occurs. Without this change
3192 some truncated ASN1 structures will not produce an error.
3195 *) Disable Heimdal support, since it hasn't been fully implemented.
3196 Still give the possibility to force the use of Heimdal, but with
3197 warnings and a request that patches get sent to openssl-dev.
3200 *) Add the VC-CE target, introduce the WINCE sysname, and add
3201 INSTALL.WCE and appropriate conditionals to make it build.
3202 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3204 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3205 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3206 edit numbers of the version.
3207 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3209 *) Introduce safe string copy and catenation functions
3210 (BUF_strlcpy() and BUF_strlcat()).
3211 [Ben Laurie (CHATS) and Richard Levitte]
3213 *) Avoid using fixed-size buffers for one-line DNs.
3214 [Ben Laurie (CHATS)]
3216 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3217 resizing buffers containing secrets, and use where appropriate.
3218 [Ben Laurie (CHATS)]
3220 *) Avoid using fixed size buffers for configuration file location.
3221 [Ben Laurie (CHATS)]
3223 *) Avoid filename truncation for various CA files.
3224 [Ben Laurie (CHATS)]
3226 *) Use sizeof in preference to magic numbers.
3227 [Ben Laurie (CHATS)]
3229 *) Avoid filename truncation in cert requests.
3230 [Ben Laurie (CHATS)]
3232 *) Add assertions to check for (supposedly impossible) buffer
3234 [Ben Laurie (CHATS)]
3236 *) Don't cache truncated DNS entries in the local cache (this could
3237 potentially lead to a spoofing attack).
3238 [Ben Laurie (CHATS)]
3240 *) Fix various buffers to be large enough for hex/decimal
3241 representations in a platform independent manner.
3242 [Ben Laurie (CHATS)]
3244 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3245 resizing buffers containing secrets, and use where appropriate.
3246 [Ben Laurie (CHATS)]
3248 *) Add BIO_indent() to avoid much slightly worrying code to do
3250 [Ben Laurie (CHATS)]
3252 *) Convert sprintf()/BIO_puts() to BIO_printf().
3253 [Ben Laurie (CHATS)]
3255 *) buffer_gets() could terminate with the buffer only half
3257 [Ben Laurie (CHATS)]
3259 *) Add assertions to prevent user-supplied crypto functions from
3260 overflowing internal buffers by having large block sizes, etc.
3261 [Ben Laurie (CHATS)]
3263 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3265 [Ben Laurie (CHATS)]
3267 *) Eliminate unused copy of key in RC4.
3268 [Ben Laurie (CHATS)]
3270 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3271 [Ben Laurie (CHATS)]
3273 *) Fix off-by-one error in EGD path.
3274 [Ben Laurie (CHATS)]
3276 *) If RANDFILE path is too long, ignore instead of truncating.
3277 [Ben Laurie (CHATS)]
3279 *) Eliminate unused and incorrectly sized X.509 structure
3281 [Ben Laurie (CHATS)]
3283 *) Eliminate unused and dangerous function knumber().
3284 [Ben Laurie (CHATS)]
3286 *) Eliminate unused and dangerous structure, KSSL_ERR.
3287 [Ben Laurie (CHATS)]
3289 *) Protect against overlong session ID context length in an encoded
3290 session object. Since these are local, this does not appear to be
3292 [Ben Laurie (CHATS)]
3294 *) Change from security patch (see 0.9.6e below) that did not affect
3295 the 0.9.6 release series:
3297 Remote buffer overflow in SSL3 protocol - an attacker could
3298 supply an oversized master key in Kerberos-enabled versions.
3300 [Ben Laurie (CHATS)]
3302 *) Change the SSL kerb5 codes to match RFC 2712.
3305 *) Make -nameopt work fully for req and add -reqopt switch.
3306 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3308 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3309 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3311 *) Make sure tests can be performed even if the corresponding algorithms
3312 have been removed entirely. This was also the last step to make
3313 OpenSSL compilable with DJGPP under all reasonable conditions.
3314 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3316 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3317 to allow version independent disabling of normally unselected ciphers,
3318 which may be activated as a side-effect of selecting a single cipher.
3320 (E.g., cipher list string "RSA" enables ciphersuites that are left
3321 out of "ALL" because they do not provide symmetric encryption.
3322 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3323 [Lutz Jaenicke, Bodo Moeller]
3325 *) Add appropriate support for separate platform-dependent build
3326 directories. The recommended way to make a platform-dependent
3327 build directory is the following (tested on Linux), maybe with
3330 # Place yourself outside of the OpenSSL source tree. In
3331 # this example, the environment variable OPENSSL_SOURCE
3332 # is assumed to contain the absolute OpenSSL source directory.
3333 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3334 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3335 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3336 mkdir -p `dirname $F`
3337 ln -s $OPENSSL_SOURCE/$F $F
3340 To be absolutely sure not to disturb the source tree, a "make clean"
3341 is a good thing. If it isn't successfull, don't worry about it,
3342 it probably means the source directory is very clean.
3345 *) Make sure any ENGINE control commands make local copies of string
3346 pointers passed to them whenever necessary. Otherwise it is possible
3347 the caller may have overwritten (or deallocated) the original string
3348 data when a later ENGINE operation tries to use the stored values.
3349 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3351 *) Improve diagnostics in file reading and command-line digests.
3352 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3354 *) Add AES modes CFB and OFB to the object database. Correct an
3355 error in AES-CFB decryption.
3358 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3359 allows existing EVP_CIPHER_CTX structures to be reused after
3360 calling EVP_*Final(). This behaviour is used by encryption
3361 BIOs and some applications. This has the side effect that
3362 applications must explicitly clean up cipher contexts with
3363 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3366 *) Check the values of dna and dnb in bn_mul_recursive before calling
3367 bn_mul_comba (a non zero value means the a or b arrays do not contain
3368 n2 elements) and fallback to bn_mul_normal if either is not zero.
3371 *) Fix escaping of non-ASCII characters when using the -subj option
3372 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3375 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3376 form for "surname", serialNumber has no short form.
3377 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3378 therefore remove "mail" short name for "internet 7".
3379 The OID for unique identifiers in X509 certificates is
3380 x500UniqueIdentifier, not uniqueIdentifier.
3381 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3384 *) Add an "init" command to the ENGINE config module and auto initialize
3385 ENGINEs. Without any "init" command the ENGINE will be initialized
3386 after all ctrl commands have been executed on it. If init=1 the
3387 ENGINE is initailized at that point (ctrls before that point are run
3388 on the uninitialized ENGINE and after on the initialized one). If
3389 init=0 then the ENGINE will not be iniatialized at all.
3392 *) Fix the 'app_verify_callback' interface so that the user-defined
3393 argument is actually passed to the callback: In the
3394 SSL_CTX_set_cert_verify_callback() prototype, the callback
3395 declaration has been changed from
3398 int (*cb)(X509_STORE_CTX *,void *);
3399 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3400 i=s->ctx->app_verify_callback(&ctx)
3401 has been changed into
3402 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3404 To update applications using SSL_CTX_set_cert_verify_callback(),
3405 a dummy argument can be added to their callback functions.
3406 [D. K. Smetters <smetters@parc.xerox.com>]
3408 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3409 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3411 *) Add and OPENSSL_LOAD_CONF define which will cause
3412 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3413 This allows older applications to transparently support certain
3414 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3415 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3416 load the config file and OPENSSL_add_all_algorithms_conf() which will
3417 always load it have also been added.
3420 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3421 Adjust NIDs and EVP layer.
3422 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3424 *) Config modules support in openssl utility.
3426 Most commands now load modules from the config file,
3427 though in a few (such as version) this isn't done
3428 because it couldn't be used for anything.
3430 In the case of ca and req the config file used is
3431 the same as the utility itself: that is the -config
3432 command line option can be used to specify an
3436 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3437 use "openssl_conf" if filename is NULL use default openssl config file.
3440 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3441 config section name. Add a new flag to tolerate a missing config file
3442 and move code to CONF_modules_load_file().
3445 *) Support for crypto accelerator cards from Accelerated Encryption
3446 Processing, www.aep.ie. (Use engine 'aep')
3447 The support was copied from 0.9.6c [engine] and adapted/corrected
3448 to work with the new engine framework.
3449 [AEP Inc. and Richard Levitte]
3451 *) Support for SureWare crypto accelerator cards from Baltimore
3452 Technologies. (Use engine 'sureware')
3453 The support was copied from 0.9.6c [engine] and adapted
3454 to work with the new engine framework.
3457 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3458 make the newer ENGINE framework commands for the CHIL engine work.
3459 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3461 *) Make it possible to produce shared libraries on ReliantUNIX.
3462 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3464 *) Add the configuration target debug-linux-ppro.
3465 Make 'openssl rsa' use the general key loading routines
3466 implemented in apps.c, and make those routines able to
3467 handle the key format FORMAT_NETSCAPE and the variant
3469 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3471 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3472 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3474 *) Add -keyform to rsautl, and document -engine.
3475 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3477 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3478 BIO_R_NO_SUCH_FILE error code rather than the generic
3479 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3482 *) Add new functions
3484 ERR_peek_last_error_line
3485 ERR_peek_last_error_line_data.
3486 These are similar to
3489 ERR_peek_error_line_data,
3490 but report on the latest error recorded rather than the first one
3491 still in the error queue.
3492 [Ben Laurie, Bodo Moeller]
3494 *) default_algorithms option in ENGINE config module. This allows things
3496 default_algorithms = ALL
3497 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3500 *) Prelminary ENGINE config module.
3503 *) New experimental application configuration code.
3506 *) Change the AES code to follow the same name structure as all other
3507 symmetric ciphers, and behave the same way. Move everything to
3508 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3509 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3511 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3512 [Ben Laurie and Theo de Raadt]
3514 *) Add option to output public keys in req command.
3515 [Massimiliano Pala madwolf@openca.org]
3517 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3518 (up to about 10% better than before for P-192 and P-224).
3521 *) New functions/macros
3523 SSL_CTX_set_msg_callback(ctx, cb)
3524 SSL_CTX_set_msg_callback_arg(ctx, arg)
3525 SSL_set_msg_callback(ssl, cb)
3526 SSL_set_msg_callback_arg(ssl, arg)
3528 to request calling a callback function
3530 void cb(int write_p, int version, int content_type,
3531 const void *buf, size_t len, SSL *ssl, void *arg)
3533 whenever a protocol message has been completely received
3534 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3535 protocol version according to which the SSL library interprets
3536 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3537 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3538 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3539 specification (change_cipher_spec(20), alert(21), handshake(22)).
3540 'buf' and 'len' point to the actual message, 'ssl' to the
3541 SSL object, and 'arg' is the application-defined value set by
3542 SSL[_CTX]_set_msg_callback_arg().
3544 'openssl s_client' and 'openssl s_server' have new '-msg' options
3545 to enable a callback that displays all protocol messages.
3548 *) Change the shared library support so shared libraries are built as
3549 soon as the corresponding static library is finished, and thereby get
3550 openssl and the test programs linked against the shared library.
3551 This still only happens when the keyword "shard" has been given to
3552 the configuration scripts.
3554 NOTE: shared library support is still an experimental thing, and
3555 backward binary compatibility is still not guaranteed.
3556 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3558 *) Add support for Subject Information Access extension.
3559 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3561 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3562 additional bytes when new memory had to be allocated, not just
3563 when reusing an existing buffer.
3566 *) New command line and configuration option 'utf8' for the req command.
3567 This allows field values to be specified as UTF8 strings.
3570 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3571 runs for the former and machine-readable output for the latter.
3574 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3575 of the e-mail address in the DN (i.e., it will go into a certificate
3576 extension only). The new configuration file option 'email_in_dn = no'
3577 has the same effect.
3578 [Massimiliano Pala madwolf@openca.org]
3580 *) Change all functions with names starting with des_ to be starting
3581 with DES_ instead. Add wrappers that are compatible with libdes,
3582 but are named _ossl_old_des_*. Finally, add macros that map the
3583 des_* symbols to the corresponding _ossl_old_des_* if libdes
3584 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3585 desired, the des_* symbols will be mapped to DES_*, with one
3588 Since we provide two compatibility mappings, the user needs to
3589 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3590 compatibility is desired. The default (i.e., when that macro
3591 isn't defined) is OpenSSL 0.9.6c compatibility.
3593 There are also macros that enable and disable the support of old
3594 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3595 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3596 are defined, the default will apply: to support the old des routines.
3598 In either case, one must include openssl/des.h to get the correct
3599 definitions. Do not try to just include openssl/des_old.h, that
3602 NOTE: This is a major break of an old API into a new one. Software
3603 authors are encouraged to switch to the DES_ style functions. Some
3604 time in the future, des_old.h and the libdes compatibility functions
3605 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3606 default), and then completely removed.
3609 *) Test for certificates which contain unsupported critical extensions.
3610 If such a certificate is found during a verify operation it is
3611 rejected by default: this behaviour can be overridden by either
3612 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3613 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3614 X509_supported_extension() has also been added which returns 1 if a
3615 particular extension is supported.
3618 *) Modify the behaviour of EVP cipher functions in similar way to digests
3619 to retain compatibility with existing code.
3622 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3623 compatibility with existing code. In particular the 'ctx' parameter does
3624 not have to be to be initialized before the call to EVP_DigestInit() and
3625 it is tidied up after a call to EVP_DigestFinal(). New function
3626 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3627 EVP_MD_CTX_copy() changed to not require the destination to be
3628 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3629 requires the destination to be valid.
3631 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3632 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3635 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3636 so that complete 'Handshake' protocol structures are kept in memory
3637 instead of overwriting 'msg_type' and 'length' with 'body' data.
3640 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3641 [Massimo Santin via Richard Levitte]
3643 *) Major restructuring to the underlying ENGINE code. This includes
3644 reduction of linker bloat, separation of pure "ENGINE" manipulation
3645 (initialisation, etc) from functionality dealing with implementations
3646 of specific crypto iterfaces. This change also introduces integrated
3647 support for symmetric ciphers and digest implementations - so ENGINEs
3648 can now accelerate these by providing EVP_CIPHER and EVP_MD
3649 implementations of their own. This is detailed in crypto/engine/README
3650 as it couldn't be adequately described here. However, there are a few
3651 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3652 were changed in the original introduction of ENGINE code have now
3653 reverted back - the hooking from this code to ENGINE is now a good
3654 deal more passive and at run-time, operations deal directly with
3655 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3656 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3657 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3658 they were not being used by the framework as there is no concept of a
3659 BIGNUM_METHOD and they could not be generalised to the new
3660 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3661 ENGINE_cpy() has been removed as it cannot be consistently defined in
3665 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3668 *) Change mkdef.pl to sort symbols that get the same entry number,
3669 and make sure the automatically generated functions ERR_load_*
3670 become part of libeay.num as well.
3673 *) New function SSL_renegotiate_pending(). This returns true once
3674 renegotiation has been requested (either SSL_renegotiate() call
3675 or HelloRequest/ClientHello receveived from the peer) and becomes
3676 false once a handshake has been completed.
3677 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3678 sends a HelloRequest, but does not ensure that a handshake takes
3679 place. SSL_renegotiate_pending() is useful for checking if the
3680 client has followed the request.)
3683 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3684 By default, clients may request session resumption even during
3685 renegotiation (if session ID contexts permit); with this option,
3686 session resumption is possible only in the first handshake.
3688 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3689 more bits available for options that should not be part of
3690 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3693 *) Add some demos for certificate and certificate request creation.
3696 *) Make maximum certificate chain size accepted from the peer application
3697 settable (SSL*_get/set_max_cert_list()), as proposed by
3698 "Douglas E. Engert" <deengert@anl.gov>.
3701 *) Add support for shared libraries for Unixware-7
3702 (Boyd Lynn Gerber <gerberb@zenez.com>).
3705 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3706 be done prior to destruction. Use this to unload error strings from
3707 ENGINEs that load their own error strings. NB: This adds two new API
3708 functions to "get" and "set" this destroy handler in an ENGINE.
3711 *) Alter all existing ENGINE implementations (except "openssl" and
3712 "openbsd") to dynamically instantiate their own error strings. This
3713 makes them more flexible to be built both as statically-linked ENGINEs
3714 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3715 Also, add stub code to each that makes building them as self-contained
3716 shared-libraries easier (see README.ENGINE).
3719 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3720 implementations into applications that are completely implemented in
3721 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3722 commands that can be used to configure what shared-library to load and
3723 to control aspects of the way it is handled. Also, made an update to
3724 the README.ENGINE file that brings its information up-to-date and
3725 provides some information and instructions on the "dynamic" ENGINE
3726 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3729 *) Make it possible to unload ranges of ERR strings with a new
3730 "ERR_unload_strings" function.
3733 *) Add a copy() function to EVP_MD.
3736 *) Make EVP_MD routines take a context pointer instead of just the
3737 md_data void pointer.
3740 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3741 that the digest can only process a single chunk of data
3742 (typically because it is provided by a piece of
3743 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3744 is only going to provide a single chunk of data, and hence the
3745 framework needn't accumulate the data for oneshot drivers.
3748 *) As with "ERR", make it possible to replace the underlying "ex_data"
3749 functions. This change also alters the storage and management of global
3750 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3751 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3752 index counters. The API functions that use this state have been changed
3753 to take a "class_index" rather than pointers to the class's local STACK
3754 and counter, and there is now an API function to dynamically create new
3755 classes. This centralisation allows us to (a) plug a lot of the
3756 thread-safety problems that existed, and (b) makes it possible to clean
3757 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3758 such data would previously have always leaked in application code and
3759 workarounds were in place to make the memory debugging turn a blind eye
3760 to it. Application code that doesn't use this new function will still
3761 leak as before, but their memory debugging output will announce it now
3762 rather than letting it slide.
3764 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3765 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3766 has a return value to indicate success or failure.
3769 *) Make it possible to replace the underlying "ERR" functions such that the
3770 global state (2 LHASH tables and 2 locks) is only used by the "default"
3771 implementation. This change also adds two functions to "get" and "set"
3772 the implementation prior to it being automatically set the first time
3773 any other ERR function takes place. Ie. an application can call "get",
3774 pass the return value to a module it has just loaded, and that module
3775 can call its own "set" function using that value. This means the
3776 module's "ERR" operations will use (and modify) the error state in the
3777 application and not in its own statically linked copy of OpenSSL code.
3780 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3781 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3782 the operation, and provides a more encapsulated way for external code
3783 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3784 to use these functions rather than manually incrementing the counts.
3786 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3789 *) Add EVP test program.
3792 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3795 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3796 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3797 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3798 These allow a CRL to be built without having to access X509_CRL fields
3799 directly. Modify 'ca' application to use new functions.
3802 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3803 bug workarounds. Rollback attack detection is a security feature.
3804 The problem will only arise on OpenSSL servers when TLSv1 is not
3805 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
3806 Software authors not wanting to support TLSv1 will have special reasons
3807 for their choice and can explicitly enable this option.
3808 [Bodo Moeller, Lutz Jaenicke]
3810 *) Rationalise EVP so it can be extended: don't include a union of
3811 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
3812 (similar to those existing for EVP_CIPHER_CTX).
3817 EVP_MD_CTX_init(&md); /* new function call */
3818 EVP_DigestInit(&md, EVP_sha1());
3819 EVP_DigestUpdate(&md, in, len);
3820 EVP_DigestFinal(&md, out, NULL);
3821 EVP_MD_CTX_cleanup(&md); /* new function call */
3825 *) Make DES key schedule conform to the usual scheme, as well as
3826 correcting its structure. This means that calls to DES functions
3827 now have to pass a pointer to a des_key_schedule instead of a
3828 plain des_key_schedule (which was actually always a pointer
3831 des_key_schedule ks;
3833 des_set_key_checked(..., &ks);
3834 des_ncbc_encrypt(..., &ks, ...);
3836 (Note that a later change renames 'des_...' into 'DES_...'.)
3839 *) Initial reduction of linker bloat: the use of some functions, such as
3840 PEM causes large amounts of unused functions to be linked in due to
3841 poor organisation. For example pem_all.c contains every PEM function
3842 which has a knock on effect of linking in large amounts of (unused)
3843 ASN1 code. Grouping together similar functions and splitting unrelated
3844 functions prevents this.
3847 *) Cleanup of EVP macros.
3850 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
3851 correct _ecb suffix.
3854 *) Add initial OCSP responder support to ocsp application. The
3855 revocation information is handled using the text based index
3856 use by the ca application. The responder can either handle
3857 requests generated internally, supplied in files (for example
3858 via a CGI script) or using an internal minimal server.
3861 *) Add configuration choices to get zlib compression for TLS.
3864 *) Changes to Kerberos SSL for RFC 2712 compliance:
3865 1. Implemented real KerberosWrapper, instead of just using
3866 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
3867 2. Implemented optional authenticator field of KerberosWrapper.
3869 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
3870 and authenticator structs; see crypto/krb5/.
3872 Generalized Kerberos calls to support multiple Kerberos libraries.
3873 [Vern Staats <staatsvr@asc.hpc.mil>,
3874 Jeffrey Altman <jaltman@columbia.edu>
3875 via Richard Levitte]
3877 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
3878 already does with RSA. testdsa.h now has 'priv_key/pub_key'
3879 values for each of the key sizes rather than having just
3880 parameters (and 'speed' generating keys each time).
3883 *) Speed up EVP routines.
3886 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
3887 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
3888 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
3889 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
3891 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
3892 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
3893 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
3896 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
3898 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
3901 *) Added the OS2-EMX target.
3902 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
3904 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
3905 to support NCONF routines in extension code. New function CONF_set_nconf()
3906 to allow functions which take an NCONF to also handle the old LHASH
3907 structure: this means that the old CONF compatible routines can be
3908 retained (in particular wrt extensions) without having to duplicate the
3909 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
3912 *) Enhance the general user interface with mechanisms for inner control
3913 and with possibilities to have yes/no kind of prompts.
3916 *) Change all calls to low level digest routines in the library and
3917 applications to use EVP. Add missing calls to HMAC_cleanup() and
3918 don't assume HMAC_CTX can be copied using memcpy().
3919 [Verdon Walker <VWalker@novell.com>, Steve Henson]
3921 *) Add the possibility to control engines through control names but with
3922 arbitrary arguments instead of just a string.
3923 Change the key loaders to take a UI_METHOD instead of a callback
3924 function pointer. NOTE: this breaks binary compatibility with earlier
3925 versions of OpenSSL [engine].
3926 Adapt the nCipher code for these new conditions and add a card insertion
3930 *) Enhance the general user interface with mechanisms to better support
3931 dialog box interfaces, application-defined prompts, the possibility
3932 to use defaults (for example default passwords from somewhere else)
3933 and interrupts/cancellations.
3936 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
3937 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
3940 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
3941 tidy up some unnecessarily weird code in 'sk_new()').
3942 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
3944 *) Change the key loading routines for ENGINEs to use the same kind
3945 callback (pem_password_cb) as all other routines that need this
3949 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
3950 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
3951 than this minimum value is recommended.
3954 *) New random seeder for OpenVMS, using the system process statistics
3955 that are easily reachable.
3958 *) Windows apparently can't transparently handle global
3959 variables defined in DLLs. Initialisations such as:
3961 const ASN1_ITEM *it = &ASN1_INTEGER_it;
3963 wont compile. This is used by the any applications that need to
3964 declare their own ASN1 modules. This was fixed by adding the option
3965 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
3966 needed for static libraries under Win32.
3969 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
3970 setting of purpose and trust fields. New X509_STORE trust and
3971 purpose functions and tidy up setting in other SSL functions.
3974 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
3975 structure. These are inherited by X509_STORE_CTX when it is
3976 initialised. This allows various defaults to be set in the
3977 X509_STORE structure (such as flags for CRL checking and custom
3978 purpose or trust settings) for functions which only use X509_STORE_CTX
3979 internally such as S/MIME.
3981 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
3982 trust settings if they are not set in X509_STORE. This allows X509_STORE
3983 purposes and trust (in S/MIME for example) to override any set by default.
3985 Add command line options for CRL checking to smime, s_client and s_server
3989 *) Initial CRL based revocation checking. If the CRL checking flag(s)
3990 are set then the CRL is looked up in the X509_STORE structure and
3991 its validity and signature checked, then if the certificate is found
3992 in the CRL the verify fails with a revoked error.
3994 Various new CRL related callbacks added to X509_STORE_CTX structure.
3996 Command line options added to 'verify' application to support this.
3998 This needs some additional work, such as being able to handle multiple
3999 CRLs with different times, extension based lookup (rather than just
4000 by subject name) and ultimately more complete V2 CRL extension
4004 *) Add a general user interface API (crypto/ui/). This is designed
4005 to replace things like des_read_password and friends (backward
4006 compatibility functions using this new API are provided).
4007 The purpose is to remove prompting functions from the DES code
4008 section as well as provide for prompting through dialog boxes in
4009 a window system and the like.
4012 *) Add "ex_data" support to ENGINE so implementations can add state at a
4013 per-structure level rather than having to store it globally.
4016 *) Make it possible for ENGINE structures to be copied when retrieved by
4017 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
4018 This causes the "original" ENGINE structure to act like a template,
4019 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
4020 operational state can be localised to each ENGINE structure, despite the
4021 fact they all share the same "methods". New ENGINE structures returned in
4022 this case have no functional references and the return value is the single
4023 structural reference. This matches the single structural reference returned
4024 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4028 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4029 needs to match any other type at all we need to manually clear the
4033 *) Changes to the "openssl engine" utility to include;
4034 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4035 about an ENGINE's available control commands.
4036 - executing control commands from command line arguments using the
4037 '-pre' and '-post' switches. '-post' is only used if '-t' is
4038 specified and the ENGINE is successfully initialised. The syntax for
4039 the individual commands are colon-separated, for example;
4040 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4043 *) New dynamic control command support for ENGINEs. ENGINEs can now
4044 declare their own commands (numbers), names (strings), descriptions,
4045 and input types for run-time discovery by calling applications. A
4046 subset of these commands are implicitly classed as "executable"
4047 depending on their input type, and only these can be invoked through
4048 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
4049 can be based on user input, config files, etc). The distinction is
4050 that "executable" commands cannot return anything other than a boolean
4051 result and can only support numeric or string input, whereas some
4052 discoverable commands may only be for direct use through
4053 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
4054 pointers, or other custom uses. The "executable" commands are to
4055 support parameterisations of ENGINE behaviour that can be
4056 unambiguously defined by ENGINEs and used consistently across any
4057 OpenSSL-based application. Commands have been added to all the
4058 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
4059 control over shared-library paths without source code alterations.
4062 *) Changed all ENGINE implementations to dynamically allocate their
4063 ENGINEs rather than declaring them statically. Apart from this being
4064 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
4065 this also allows the implementations to compile without using the
4066 internal engine_int.h header.
4069 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
4070 'const' value. Any code that should be able to modify a RAND_METHOD
4071 should already have non-const pointers to it (ie. they should only
4072 modify their own ones).
4075 *) Made a variety of little tweaks to the ENGINE code.
4076 - "atalla" and "ubsec" string definitions were moved from header files
4077 to C code. "nuron" string definitions were placed in variables
4078 rather than hard-coded - allowing parameterisation of these values
4079 later on via ctrl() commands.
4080 - Removed unused "#if 0"'d code.
4081 - Fixed engine list iteration code so it uses ENGINE_free() to release
4082 structural references.
4083 - Constified the RAND_METHOD element of ENGINE structures.
4084 - Constified various get/set functions as appropriate and added
4085 missing functions (including a catch-all ENGINE_cpy that duplicates
4086 all ENGINE values onto a new ENGINE except reference counts/state).
4087 - Removed NULL parameter checks in get/set functions. Setting a method
4088 or function to NULL is a way of cancelling out a previously set
4089 value. Passing a NULL ENGINE parameter is just plain stupid anyway
4090 and doesn't justify the extra error symbols and code.
4091 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
4092 flags from engine_int.h to engine.h.
4093 - Changed prototypes for ENGINE handler functions (init(), finish(),
4094 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
4097 *) Implement binary inversion algorithm for BN_mod_inverse in addition
4098 to the algorithm using long division. The binary algorithm can be
4099 used only if the modulus is odd. On 32-bit systems, it is faster
4100 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
4101 roughly 5-15% for 256-bit moduli), so we use it only for moduli
4102 up to 450 bits. In 64-bit environments, the binary algorithm
4103 appears to be advantageous for much longer moduli; here we use it
4104 for moduli up to 2048 bits.
4107 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
4108 could not support the combine flag in choice fields.
4111 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
4112 extensions from a certificate request to the certificate.
4115 *) Allow multiple 'certopt' and 'nameopt' options to be separated
4116 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
4117 file: this allows the display of the certificate about to be
4118 signed to be customised, to allow certain fields to be included
4119 or excluded and extension details. The old system didn't display
4120 multicharacter strings properly, omitted fields not in the policy
4121 and couldn't display additional details such as extensions.
4124 *) Function EC_POINTs_mul for multiple scalar multiplication
4125 of an arbitrary number of elliptic curve points
4126 \sum scalars[i]*points[i],
4127 optionally including the generator defined for the EC_GROUP:
4128 scalar*generator + \sum scalars[i]*points[i].
4130 EC_POINT_mul is a simple wrapper function for the typical case
4131 that the point list has just one item (besides the optional
4135 *) First EC_METHODs for curves over GF(p):
4137 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
4138 operations and provides various method functions that can also
4139 operate with faster implementations of modular arithmetic.
4141 EC_GFp_mont_method() reuses most functions that are part of
4142 EC_GFp_simple_method, but uses Montgomery arithmetic.
4144 [Bodo Moeller; point addition and point doubling
4145 implementation directly derived from source code provided by
4146 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
4148 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
4149 crypto/ec/ec_lib.c):
4151 Curves are EC_GROUP objects (with an optional group generator)
4152 based on EC_METHODs that are built into the library.
4154 Points are EC_POINT objects based on EC_GROUP objects.
4156 Most of the framework would be able to handle curves over arbitrary
4157 finite fields, but as there are no obvious types for fields other
4158 than GF(p), some functions are limited to that for now.
4161 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
4162 that the file contains a complete HTTP response.
4165 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
4166 change the def and num file printf format specifier from "%-40sXXX"
4167 to "%-39s XXX". The latter will always guarantee a space after the
4168 field while the former will cause them to run together if the field
4169 is 40 of more characters long.
4172 *) Constify the cipher and digest 'method' functions and structures
4173 and modify related functions to take constant EVP_MD and EVP_CIPHER
4177 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
4178 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
4181 *) Modify EVP_Digest*() routines so they now return values. Although the
4182 internal software routines can never fail additional hardware versions
4186 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
4188 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
4189 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
4192 ERR_R_NESTED_ASN1_ERROR
4194 ERR_R_MISSING_ASN1_EOS
4195 were 4 .. 9, conflicting with
4196 ERR_LIB_RSA (= ERR_R_RSA_LIB)
4198 ERR_LIB_PEM (= ERR_R_PEM_LIB).
4199 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
4201 Add new error code 'ERR_R_INTERNAL_ERROR'.
4204 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
4208 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
4209 sets the subject name for a new request or supersedes the
4210 subject name in a given request. Formats that can be parsed are
4211 'CN=Some Name, OU=myOU, C=IT'
4213 'CN=Some Name/OU=myOU/C=IT'.
4215 Add options '-batch' and '-verbose' to 'openssl req'.
4216 [Massimiliano Pala <madwolf@hackmasters.net>]
4218 *) Introduce the possibility to access global variables through
4219 functions on platform were that's the best way to handle exporting
4220 global variables in shared libraries. To enable this functionality,
4221 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
4222 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
4223 is normally done by Configure or something similar).
4225 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
4226 in the source file (foo.c) like this:
4228 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
4229 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
4231 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
4232 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
4234 OPENSSL_DECLARE_GLOBAL(int,foo);
4235 #define foo OPENSSL_GLOBAL_REF(foo)
4236 OPENSSL_DECLARE_GLOBAL(double,bar);
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