5 Changes between 1.0.0 and 1.1.0 [xx XXX xxxx]
7 *) Add Next Protocol Negotiation,
8 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
9 disabled with a no-npn flag to config or Configure. Code donated
11 [Adam Langley <agl@google.com> and Ben Laurie]
13 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
14 all platforms. Move ssize_t definition from e_os.h to the public
15 header file e_os2.h as it now appears in public header file cms.h
18 *) New function OPENSSL_gmtime_diff to find the difference in days
19 and seconds between two tm structures. This will be used to provide
20 additional functionality for ASN1_TIME.
23 *) New -sigopt option to the ca, req and x509 utilities. Additional
24 signature parameters can be passed using this option and in
28 *) Add RSA PSS signing function. This will generate and set the
29 appropriate AlgorithmIdentifiers for PSS based on those in the
30 corresponding EVP_MD_CTX structure. No application support yet.
33 *) Support for companion algorithm specific ASN1 signing routines.
34 New function ASN1_item_sign_ctx() signs a pre-initialised
35 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
36 the appropriate parameters.
39 *) Add new algorithm specific ASN1 verification initialisation function
40 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
41 handling will be the same no matter what EVP_PKEY_METHOD is used.
42 Add a PSS handler to support verification of PSS signatures: checked
43 against a number of sample certificates.
46 *) Add signature printing for PSS. Add PSS OIDs.
47 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
49 *) Add algorithm specific signature printing. An individual ASN1 method
50 can now print out signatures instead of the standard hex dump.
52 More complex signatures (e.g. PSS) can print out more meaningful
53 information. Include DSA version that prints out the signature
57 *) Add -trusted_first option which attempts to find certificates in the
58 trusted store even if an untrusted chain is also supplied.
61 *) Initial experimental support for explicitly trusted non-root CAs.
62 OpenSSL still tries to build a complete chain to a root but if an
63 intermediate CA has a trust setting included that is used. The first
64 setting is used: whether to trust or reject.
67 *) New -verify_name option in command line utilities to set verification
71 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
72 Add CMAC pkey methods.
75 *) Experiemental regnegotiation in s_server -www mode. If the client
76 browses /reneg connection is renegotiated. If /renegcert it is
77 renegotiated requesting a certificate.
80 *) Add an "external" session cache for debugging purposes to s_server. This
81 should help trace issues which normally are only apparent in deployed
82 multi-process servers.
85 *) Experiemental password based recipient info support for CMS library:
89 *) Split password based encryption into PBES2 and PBKDF2 functions. This
90 neatly separates the code into cipher and PBE sections and is required
91 for some algorithms that split PBES2 into separate pieces (such as
95 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
96 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
97 BIO_set_cipher() and some obscure PEM functions were changed so they
98 can now return an error. The RAND changes required a change to the
99 RAND_METHOD structure.
102 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
103 a gcc attribute to warn if the result of a function is ignored. This
104 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
105 whose return value is often ignored.
108 Changes between 1.0.0a and 1.0.1 [xx XXX xxxx]
110 *) Permit abbreviated handshakes when renegotiating using the function
111 SSL_renegotiate_abbreviated().
112 [Robin Seggelmann <seggelmann@fh-muenster.de>]
114 *) Add call to ENGINE_register_all_complete() to
115 ENGINE_load_builtin_engines(), so some implementations get used
116 automatically instead of needing explicit application support.
119 *) Add support for TLS key exporter as described in RFC5705.
120 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
122 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
123 a few changes are required:
125 Add SSL_OP_NO_TLSv1_1 flag.
127 Update version checking logic to handle version 1.1.
128 Add explicit IV handling (ported from DTLS code).
129 Add command line options to s_client/s_server.
132 Changes between 1.0.0a and 1.0.0b [xx XXX xxxx]
134 *) Fix WIN32 build system to correctly link an ENGINE directory into
138 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
140 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
142 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
144 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
146 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
147 context. The operation can be customised via the ctrl mechanism in
148 case ENGINEs want to include additional functionality.
151 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
154 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
155 output hashes compatible with older versions of OpenSSL.
156 [Willy Weisz <weisz@vcpc.univie.ac.at>]
158 *) Fix compression algorithm handling: if resuming a session use the
159 compression algorithm of the resumed session instead of determining
160 it from client hello again. Don't allow server to change algorithm.
163 *) Add load_crls() function to apps tidying load_certs() too. Add option
164 to verify utility to allow additional CRLs to be included.
167 *) Update OCSP request code to permit adding custom headers to the request:
168 some responders need this.
171 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
173 [Julia Lawall <julia@diku.dk>]
175 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
176 needlessly dereferenced structures, used obsolete functions and
177 didn't handle all updated verify codes correctly.
180 *) Disable MD2 in the default configuration.
183 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
184 indicate the initial BIO being pushed or popped. This makes it possible
185 to determine whether the BIO is the one explicitly called or as a result
186 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
187 it handles reference counts correctly and doesn't zero out the I/O bio
188 when it is not being explicitly popped. WARNING: applications which
189 included workarounds for the old buggy behaviour will need to be modified
190 or they could free up already freed BIOs.
193 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
194 renaming to all platforms (within the 0.9.8 branch, this was
195 done conditionally on Netware platforms to avoid a name clash).
196 [Guenter <lists@gknw.net>]
198 *) Add ECDHE and PSK support to DTLS.
199 [Michael Tuexen <tuexen@fh-muenster.de>]
201 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
205 *) Add "missing" function EVP_MD_flags() (without this the only way to
206 retrieve a digest flags is by accessing the structure directly. Update
207 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
208 or cipher is registered as in the "from" argument. Print out all
209 registered digests in the dgst usage message instead of manually
210 attempting to work them out.
213 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
214 this allows the use of compression and extensions. Change default cipher
215 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
216 by default unless an application cipher string requests it.
219 *) Alter match criteria in PKCS12_parse(). It used to try to use local
220 key ids to find matching certificates and keys but some PKCS#12 files
221 don't follow the (somewhat unwritten) rules and this strategy fails.
222 Now just gather all certificates together and the first private key
223 then look for the first certificate that matches the key.
226 *) Support use of registered digest and cipher names for dgst and cipher
227 commands instead of having to add each one as a special case. So now
234 openssl dgst -sha256 foo
236 and this works for ENGINE based algorithms too.
240 *) Update Gost ENGINE to support parameter files.
241 [Victor B. Wagner <vitus@cryptocom.ru>]
243 *) Support GeneralizedTime in ca utility.
244 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
246 *) Enhance the hash format used for certificate directory links. The new
247 form uses the canonical encoding (meaning equivalent names will work
248 even if they aren't identical) and uses SHA1 instead of MD5. This form
249 is incompatible with the older format and as a result c_rehash should
250 be used to rebuild symbolic links.
253 *) Make PKCS#8 the default write format for private keys, replacing the
254 traditional format. This form is standardised, more secure and doesn't
255 include an implicit MD5 dependency.
258 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
259 committed to OpenSSL should pass this lot as a minimum.
262 *) Add session ticket override functionality for use by EAP-FAST.
263 [Jouni Malinen <j@w1.fi>]
265 *) Modify HMAC functions to return a value. Since these can be implemented
266 in an ENGINE errors can occur.
269 *) Type-checked OBJ_bsearch_ex.
272 *) Type-checked OBJ_bsearch. Also some constification necessitated
273 by type-checking. Still to come: TXT_DB, bsearch(?),
274 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
278 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
279 seconds to a tm structure directly, instead of going through OS
280 specific date routines. This avoids any issues with OS routines such
281 as the year 2038 bug. New *_adj() functions for ASN1 time structures
282 and X509_time_adj_ex() to cover the extended range. The existing
283 X509_time_adj() is still usable and will no longer have any date issues.
286 *) Delta CRL support. New use deltas option which will attempt to locate
287 and search any appropriate delta CRLs available.
289 This work was sponsored by Google.
292 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
293 code and add additional score elements. Validate alternate CRL paths
294 as part of the CRL checking and indicate a new error "CRL path validation
295 error" in this case. Applications wanting additional details can use
296 the verify callback and check the new "parent" field. If this is not
297 NULL CRL path validation is taking place. Existing applications wont
298 see this because it requires extended CRL support which is off by
301 This work was sponsored by Google.
304 *) Support for freshest CRL extension.
306 This work was sponsored by Google.
309 *) Initial indirect CRL support. Currently only supported in the CRLs
310 passed directly and not via lookup. Process certificate issuer
311 CRL entry extension and lookup CRL entries by bother issuer name
312 and serial number. Check and process CRL issuer entry in IDP extension.
314 This work was sponsored by Google.
317 *) Add support for distinct certificate and CRL paths. The CRL issuer
318 certificate is validated separately in this case. Only enabled if
319 an extended CRL support flag is set: this flag will enable additional
320 CRL functionality in future.
322 This work was sponsored by Google.
325 *) Add support for policy mappings extension.
327 This work was sponsored by Google.
330 *) Fixes to pathlength constraint, self issued certificate handling,
331 policy processing to align with RFC3280 and PKITS tests.
333 This work was sponsored by Google.
336 *) Support for name constraints certificate extension. DN, email, DNS
337 and URI types are currently supported.
339 This work was sponsored by Google.
342 *) To cater for systems that provide a pointer-based thread ID rather
343 than numeric, deprecate the current numeric thread ID mechanism and
344 replace it with a structure and associated callback type. This
345 mechanism allows a numeric "hash" to be extracted from a thread ID in
346 either case, and on platforms where pointers are larger than 'long',
347 mixing is done to help ensure the numeric 'hash' is usable even if it
348 can't be guaranteed unique. The default mechanism is to use "&errno"
349 as a pointer-based thread ID to distinguish between threads.
351 Applications that want to provide their own thread IDs should now use
352 CRYPTO_THREADID_set_callback() to register a callback that will call
353 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
355 Note that ERR_remove_state() is now deprecated, because it is tied
356 to the assumption that thread IDs are numeric. ERR_remove_state(0)
357 to free the current thread's error state should be replaced by
358 ERR_remove_thread_state(NULL).
360 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
361 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
362 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
363 application was previously providing a numeric thread callback that
364 was inappropriate for distinguishing threads, then uniqueness might
365 have been obtained with &errno that happened immediately in the
366 intermediate development versions of OpenSSL; this is no longer the
367 case, the numeric thread callback will now override the automatic use
369 [Geoff Thorpe, with help from Bodo Moeller]
371 *) Initial support for different CRL issuing certificates. This covers a
372 simple case where the self issued certificates in the chain exist and
373 the real CRL issuer is higher in the existing chain.
375 This work was sponsored by Google.
378 *) Removed effectively defunct crypto/store from the build.
381 *) Revamp of STACK to provide stronger type-checking. Still to come:
382 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
383 ASN1_STRING, CONF_VALUE.
386 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
387 RAM on SSL connections. This option can save about 34k per idle SSL.
390 *) Revamp of LHASH to provide stronger type-checking. Still to come:
391 STACK, TXT_DB, bsearch, qsort.
394 *) Initial support for Cryptographic Message Syntax (aka CMS) based
395 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
396 support for data, signedData, compressedData, digestedData and
397 encryptedData, envelopedData types included. Scripts to check against
398 RFC4134 examples draft and interop and consistency checks of many
399 content types and variants.
402 *) Add options to enc utility to support use of zlib compression BIO.
405 *) Extend mk1mf to support importing of options and assembly language
406 files from Configure script, currently only included in VC-WIN32.
407 The assembly language rules can now optionally generate the source
408 files from the associated perl scripts.
411 *) Implement remaining functionality needed to support GOST ciphersuites.
412 Interop testing has been performed using CryptoPro implementations.
413 [Victor B. Wagner <vitus@cryptocom.ru>]
415 *) s390x assembler pack.
418 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
422 *) Implement Opaque PRF Input TLS extension as specified in
423 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
424 official specification yet and no extension type assignment by
425 IANA exists, this extension (for now) will have to be explicitly
426 enabled when building OpenSSL by providing the extension number
427 to use. For example, specify an option
429 -DTLSEXT_TYPE_opaque_prf_input=0x9527
431 to the "config" or "Configure" script to enable the extension,
432 assuming extension number 0x9527 (which is a completely arbitrary
433 and unofficial assignment based on the MD5 hash of the Internet
434 Draft). Note that by doing so, you potentially lose
435 interoperability with other TLS implementations since these might
436 be using the same extension number for other purposes.
438 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
439 opaque PRF input value to use in the handshake. This will create
440 an interal copy of the length-'len' string at 'src', and will
441 return non-zero for success.
443 To get more control and flexibility, provide a callback function
446 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
447 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
451 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
454 Callback function 'cb' will be called in handshakes, and is
455 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
456 Argument 'arg' is for application purposes (the value as given to
457 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
458 be provided to the callback function). The callback function
459 has to return non-zero to report success: usually 1 to use opaque
460 PRF input just if possible, or 2 to enforce use of the opaque PRF
461 input. In the latter case, the library will abort the handshake
462 if opaque PRF input is not successfully negotiated.
464 Arguments 'peerinput' and 'len' given to the callback function
465 will always be NULL and 0 in the case of a client. A server will
466 see the client's opaque PRF input through these variables if
467 available (NULL and 0 otherwise). Note that if the server
468 provides an opaque PRF input, the length must be the same as the
469 length of the client's opaque PRF input.
471 Note that the callback function will only be called when creating
472 a new session (session resumption can resume whatever was
473 previously negotiated), and will not be called in SSL 2.0
474 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
475 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
476 for applications that need to enforce opaque PRF input.
480 *) Update ssl code to support digests other than SHA1+MD5 for handshake
483 [Victor B. Wagner <vitus@cryptocom.ru>]
485 *) Add RFC4507 support to OpenSSL. This includes the corrections in
486 RFC4507bis. The encrypted ticket format is an encrypted encoded
487 SSL_SESSION structure, that way new session features are automatically
490 If a client application caches session in an SSL_SESSION structure
491 support is transparent because tickets are now stored in the encoded
494 The SSL_CTX structure automatically generates keys for ticket
495 protection in servers so again support should be possible
496 with no application modification.
498 If a client or server wishes to disable RFC4507 support then the option
499 SSL_OP_NO_TICKET can be set.
501 Add a TLS extension debugging callback to allow the contents of any client
502 or server extensions to be examined.
504 This work was sponsored by Google.
507 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
508 OpenSSL should now compile cleanly on gcc 4.2
509 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
511 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
512 support including streaming MAC support: this is required for GOST
514 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
516 *) Add option -stream to use PKCS#7 streaming in smime utility. New
517 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
518 to output in BER and PEM format.
521 *) Experimental support for use of HMAC via EVP_PKEY interface. This
522 allows HMAC to be handled via the EVP_DigestSign*() interface. The
523 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
524 ENGINE support for HMAC keys which are unextractable. New -mac and
525 -macopt options to dgst utility.
528 *) New option -sigopt to dgst utility. Update dgst to use
529 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
530 alternative signing paramaters such as X9.31 or PSS in the dgst
534 *) Change ssl_cipher_apply_rule(), the internal function that does
535 the work each time a ciphersuite string requests enabling
536 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
537 removing ("!foo+bar") a class of ciphersuites: Now it maintains
538 the order of disabled ciphersuites such that those ciphersuites
539 that most recently went from enabled to disabled not only stay
540 in order with respect to each other, but also have higher priority
541 than other disabled ciphersuites the next time ciphersuites are
544 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
545 the same ciphersuites as with "HIGH" alone, but in a specific
546 order where the PSK ciphersuites come first (since they are the
547 most recently disabled ciphersuites when "HIGH" is parsed).
549 Also, change ssl_create_cipher_list() (using this new
550 funcionality) such that between otherwise identical
551 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
555 *) Change ssl_create_cipher_list() so that it automatically
556 arranges the ciphersuites in reasonable order before starting
557 to process the rule string. Thus, the definition for "DEFAULT"
558 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
559 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
560 This makes it much easier to arrive at a reasonable default order
561 in applications for which anonymous ciphers are OK (meaning
562 that you can't actually use DEFAULT).
563 [Bodo Moeller; suggested by Victor Duchovni]
565 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
566 processing) into multiple integers instead of setting
567 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
568 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
569 (These masks as well as the individual bit definitions are hidden
570 away into the non-exported interface ssl/ssl_locl.h, so this
571 change to the definition of the SSL_CIPHER structure shouldn't
572 affect applications.) This give us more bits for each of these
573 categories, so there is no longer a need to coagulate AES128 and
574 AES256 into a single algorithm bit, and to coagulate Camellia128
575 and Camellia256 into a single algorithm bit, which has led to all
578 Thus, among other things, the kludge introduced in 0.9.7m and
579 0.9.8e for masking out AES256 independently of AES128 or masking
580 out Camellia256 independently of AES256 is not needed here in 0.9.9.
582 With the change, we also introduce new ciphersuite aliases that
583 so far were missing: "AES128", "AES256", "CAMELLIA128", and
587 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
588 Use the leftmost N bytes of the signature input if the input is
589 larger than the prime q (with N being the size in bytes of q).
592 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
593 it yet and it is largely untested.
596 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
599 *) Initial incomplete changes to avoid need for function casts in OpenSSL
600 some compilers (gcc 4.2 and later) reject their use. Safestack is
601 reimplemented. Update ASN1 to avoid use of legacy functions.
604 *) Win32/64 targets are linked with Winsock2.
607 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
608 to external functions. This can be used to increase CRL handling
609 efficiency especially when CRLs are very large by (for example) storing
610 the CRL revoked certificates in a database.
613 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
614 new CRLs added to a directory can be used. New command line option
615 -verify_return_error to s_client and s_server. This causes real errors
616 to be returned by the verify callback instead of carrying on no matter
617 what. This reflects the way a "real world" verify callback would behave.
620 *) GOST engine, supporting several GOST algorithms and public key formats.
621 Kindly donated by Cryptocom.
624 *) Partial support for Issuing Distribution Point CRL extension. CRLs
625 partitioned by DP are handled but no indirect CRL or reason partitioning
626 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
627 selected via a scoring technique which handles IDP and AKID in CRLs.
630 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
631 will ultimately be used for all verify operations: this will remove the
632 X509_STORE dependency on certificate verification and allow alternative
633 lookup methods. X509_STORE based implementations of these two callbacks.
636 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
637 Modify get_crl() to find a valid (unexpired) CRL if possible.
640 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
641 this would be called X509_CRL_cmp() but that name is already used by
642 a function that just compares CRL issuer names. Cache several CRL
643 extensions in X509_CRL structure and cache CRLDP in X509.
646 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
647 this maps equivalent X509_NAME structures into a consistent structure.
648 Name comparison can then be performed rapidly using memcmp().
651 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
655 *) Allow digests to supply their own micalg string for S/MIME type using
656 the ctrl EVP_MD_CTRL_MICALG.
659 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
660 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
661 ctrl. It can then customise the structure before and/or after signing
665 *) New function OBJ_add_sigid() to allow application defined signature OIDs
666 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
667 to free up any added signature OIDs.
670 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
671 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
672 digest and cipher tables. New options added to openssl utility:
673 list-message-digest-algorithms and list-cipher-algorithms.
676 *) Change the array representation of binary polynomials: the list
677 of degrees of non-zero coefficients is now terminated with -1.
678 Previously it was terminated with 0, which was also part of the
679 value; thus, the array representation was not applicable to
680 polynomials where t^0 has coefficient zero. This change makes
681 the array representation useful in a more general context.
684 *) Various modifications and fixes to SSL/TLS cipher string
685 handling. For ECC, the code now distinguishes between fixed ECDH
686 with RSA certificates on the one hand and with ECDSA certificates
687 on the other hand, since these are separate ciphersuites. The
688 unused code for Fortezza ciphersuites has been removed.
690 For consistency with EDH, ephemeral ECDH is now called "EECDH"
691 (not "ECDHE"). For consistency with the code for DH
692 certificates, use of ECDH certificates is now considered ECDH
693 authentication, not RSA or ECDSA authentication (the latter is
694 merely the CA's signing algorithm and not actively used in the
697 The temporary ciphersuite alias "ECCdraft" is no longer
698 available, and ECC ciphersuites are no longer excluded from "ALL"
699 and "DEFAULT". The following aliases now exist for RFC 4492
700 ciphersuites, most of these by analogy with the DH case:
702 kECDHr - ECDH cert, signed with RSA
703 kECDHe - ECDH cert, signed with ECDSA
704 kECDH - ECDH cert (signed with either RSA or ECDSA)
705 kEECDH - ephemeral ECDH
706 ECDH - ECDH cert or ephemeral ECDH
712 AECDH - anonymous ECDH
713 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
717 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
718 Use correct micalg parameters depending on digest(s) in signed message.
721 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
722 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
725 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
726 an engine to register a method. Add ENGINE lookups for methods and
727 functional reference processing.
730 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
731 EVP_{Sign,Verify}* which allow an application to customise the signature
735 *) New -resign option to smime utility. This adds one or more signers
736 to an existing PKCS#7 signedData structure. Also -md option to use an
737 alternative message digest algorithm for signing.
740 *) Tidy up PKCS#7 routines and add new functions to make it easier to
741 create PKCS7 structures containing multiple signers. Update smime
742 application to support multiple signers.
745 *) New -macalg option to pkcs12 utility to allow setting of an alternative
749 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
750 Reorganize PBE internals to lookup from a static table using NIDs,
751 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
752 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
753 PRF which will be automatically used with PBES2.
756 *) Replace the algorithm specific calls to generate keys in "req" with the
760 *) Update PKCS#7 enveloped data routines to use new API. This is now
761 supported by any public key method supporting the encrypt operation. A
762 ctrl is added to allow the public key algorithm to examine or modify
763 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
767 *) Add a ctrl to asn1 method to allow a public key algorithm to express
768 a default digest type to use. In most cases this will be SHA1 but some
769 algorithms (such as GOST) need to specify an alternative digest. The
770 return value indicates how strong the prefernce is 1 means optional and
771 2 is mandatory (that is it is the only supported type). Modify
772 ASN1_item_sign() to accept a NULL digest argument to indicate it should
773 use the default md. Update openssl utilities to use the default digest
774 type for signing if it is not explicitly indicated.
777 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
778 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
779 signing method from the key type. This effectively removes the link
780 between digests and public key types.
783 *) Add an OID cross reference table and utility functions. Its purpose is to
784 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
785 rsaEncryption. This will allow some of the algorithm specific hackery
786 needed to use the correct OID to be removed.
789 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
790 structures for PKCS7_sign(). They are now set up by the relevant public
794 *) Add provisional EC pkey method with support for ECDSA and ECDH.
797 *) Add support for key derivation (agreement) in the API, DH method and
801 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
802 public and private key formats. As a side effect these add additional
803 command line functionality not previously available: DSA signatures can be
804 generated and verified using pkeyutl and DH key support and generation in
809 [Oliver Tappe <zooey@hirschkaefer.de>]
811 *) New make target "install_html_docs" installs HTML renditions of the
813 [Oliver Tappe <zooey@hirschkaefer.de>]
815 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
816 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
817 support key and parameter generation and add initial key generation
818 functionality for RSA.
821 *) Add functions for main EVP_PKEY_method operations. The undocumented
822 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
823 EVP_PKEY_{encrypt,decrypt}_old.
826 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
827 key API, doesn't do much yet.
830 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
831 public key algorithms. New option to openssl utility:
832 "list-public-key-algorithms" to print out info.
835 *) Implement the Supported Elliptic Curves Extension for
836 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
839 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
840 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
843 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
844 utilities such as rsa, dsa, dsaparam etc except they process any key
848 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
849 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
850 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
854 *) Initial support for pluggable public key ASN1.
855 De-spaghettify the public key ASN1 handling. Move public and private
856 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
857 algorithm specific handling to a single module within the relevant
858 algorithm directory. Add functions to allow (near) opaque processing
859 of public and private key structures.
862 *) Implement the Supported Point Formats Extension for
863 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
866 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
867 for the psk identity [hint] and the psk callback functions to the
868 SSL_SESSION, SSL and SSL_CTX structure.
871 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
875 SSL_CTX_use_psk_identity_hint
876 SSL_get_psk_identity_hint
878 SSL_use_psk_identity_hint
880 [Mika Kousa and Pasi Eronen of Nokia Corporation]
882 *) Add RFC 3161 compliant time stamp request creation, response generation
883 and response verification functionality.
884 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
886 *) Add initial support for TLS extensions, specifically for the server_name
887 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
888 have new members for a host name. The SSL data structure has an
889 additional member SSL_CTX *initial_ctx so that new sessions can be
890 stored in that context to allow for session resumption, even after the
891 SSL has been switched to a new SSL_CTX in reaction to a client's
892 server_name extension.
894 New functions (subject to change):
897 SSL_get_servername_type()
900 New CTRL codes and macros (subject to change):
902 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
903 - SSL_CTX_set_tlsext_servername_callback()
904 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
905 - SSL_CTX_set_tlsext_servername_arg()
906 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
908 openssl s_client has a new '-servername ...' option.
910 openssl s_server has new options '-servername_host ...', '-cert2 ...',
911 '-key2 ...', '-servername_fatal' (subject to change). This allows
912 testing the HostName extension for a specific single host name ('-cert'
913 and '-key' remain fallbacks for handshakes without HostName
914 negotiation). If the unrecogninzed_name alert has to be sent, this by
915 default is a warning; it becomes fatal with the '-servername_fatal'
918 [Peter Sylvester, Remy Allais, Christophe Renou]
920 *) Whirlpool hash implementation is added.
923 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
924 bn(64,32). Because of instruction set limitations it doesn't have
925 any negative impact on performance. This was done mostly in order
926 to make it possible to share assembler modules, such as bn_mul_mont
927 implementations, between 32- and 64-bit builds without hassle.
930 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
931 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
935 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
936 dedicated Montgomery multiplication procedure, is introduced.
937 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
938 "64-bit" performance on certain 32-bit targets.
941 *) New option SSL_OP_NO_COMP to disable use of compression selectively
942 in SSL structures. New SSL ctrl to set maximum send fragment size.
943 Save memory by seeting the I/O buffer sizes dynamically instead of
944 using the maximum available value.
947 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
948 in addition to the text details.
951 *) Very, very preliminary EXPERIMENTAL support for printing of general
952 ASN1 structures. This currently produces rather ugly output and doesn't
953 handle several customised structures at all.
956 *) Integrated support for PVK file format and some related formats such
957 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
958 these in the 'rsa' and 'dsa' utilities.
961 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
964 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
965 place for the (very old) "NETSCAPE" format certificates which are now
966 handled using new ASN1 code equivalents.
969 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
970 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
971 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
974 *) Modify CRL distribution points extension code to print out previously
975 unsupported fields. Enhance extension setting code to allow setting of
979 *) Add print and set support for Issuing Distribution Point CRL extension.
982 *) Change 'Configure' script to enable Camellia by default.
985 Changes between 0.9.8o and 0.9.8p [xx XXX xxxx]
987 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
988 is also one of the inputs.
989 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
991 *) Don't repeatedly append PBE algorithms to table if they already exist.
992 Sort table on each new add. This effectively makes the table read only
993 after all algorithms are added and subsequent calls to PKCS12_pbe_add
997 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
999 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1002 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1003 access or freeing data twice (CVE-2010-0742)
1004 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1006 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1007 common in certificates and some applications which only call
1008 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1012 Reduce copying into .apps and .test in makevms.com
1013 Don't try to use blank CA certificate in CA.com
1014 Allow use of C files from original directories in maketests.com
1015 [Steven M. Schweda" <sms@antinode.info>]
1017 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1019 *) When rejecting SSL/TLS records due to an incorrect version number, never
1020 update s->server with a new major version number. As of
1021 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1022 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1023 the previous behavior could result in a read attempt at NULL when
1024 receiving specific incorrect SSL/TLS records once record payload
1025 protection is active. (CVE-2010-0740)
1026 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1028 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1029 could be crashed if the relevant tables were not present (e.g. chrooted).
1030 [Tomas Hoger <thoger@redhat.com>]
1032 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1034 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1035 [Martin Olsson, Neel Mehta]
1037 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1038 accommodate for stack sorting, always a write lock!).
1041 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1042 excessive delays in the RAND_poll(): over a minute. As a workaround
1043 include a time check in the inner Heap32Next loop too.
1046 *) The code that handled flushing of data in SSL/TLS originally used the
1047 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1048 the problem outlined in PR#1949. The fix suggested there however can
1049 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1050 of Apache). So instead simplify the code to flush unconditionally.
1051 This should be fine since flushing with no data to flush is a no op.
1054 *) Handle TLS versions 2.0 and later properly and correctly use the
1055 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1056 off ancient servers have a habit of sticking around for a while...
1059 *) Modify compression code so it frees up structures without using the
1060 ex_data callbacks. This works around a problem where some applications
1061 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1062 restarting) then use compression (e.g. SSL with compression) later.
1063 This results in significant per-connection memory leaks and
1064 has caused some security issues including CVE-2008-1678 and
1068 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1069 change when encrypting or decrypting.
1072 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1073 connect and renegotiate with servers which do not support RI.
1074 Until RI is more widely deployed this option is enabled by default.
1077 *) Add "missing" ssl ctrls to clear options and mode.
1080 *) If client attempts to renegotiate and doesn't support RI respond with
1081 a no_renegotiation alert as required by RFC5746. Some renegotiating
1082 TLS clients will continue a connection gracefully when they receive
1083 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1084 waiting for a server hello which it will never receive. Now we treat a
1085 received no_renegotiation alert as a fatal error. This is because
1086 applications requesting a renegotiation might well expect it to succeed
1087 and would have no code in place to handle the server denying it so the
1088 only safe thing to do is to terminate the connection.
1091 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1092 peer supports secure renegotiation and 0 otherwise. Print out peer
1093 renegotiation support in s_client/s_server.
1096 *) Replace the highly broken and deprecated SPKAC certification method with
1097 the updated NID creation version. This should correctly handle UTF8.
1100 *) Implement RFC5746. Re-enable renegotiation but require the extension
1101 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1102 turns out to be a bad idea. It has been replaced by
1103 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1104 SSL_CTX_set_options(). This is really not recommended unless you
1105 know what you are doing.
1106 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1108 *) Fixes to stateless session resumption handling. Use initial_ctx when
1109 issuing and attempting to decrypt tickets in case it has changed during
1110 servername handling. Use a non-zero length session ID when attempting
1111 stateless session resumption: this makes it possible to determine if
1112 a resumption has occurred immediately after receiving server hello
1113 (several places in OpenSSL subtly assume this) instead of later in
1117 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1118 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1119 fixes for a few places where the return code is not checked
1121 [Julia Lawall <julia@diku.dk>]
1123 *) Add --strict-warnings option to Configure script to include devteam
1124 warnings in other configurations.
1127 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1128 makes it possible to install openssl libraries in locations which
1129 have names other than "lib", for example "/usr/lib64" which some
1131 [Steve Henson, based on patch from Jeremy Utley]
1133 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1134 X690 8.9.12 and can produce some misleading textual output of OIDs.
1135 [Steve Henson, reported by Dan Kaminsky]
1137 *) Delete MD2 from algorithm tables. This follows the recommendation in
1138 several standards that it is not used in new applications due to
1139 several cryptographic weaknesses. For binary compatibility reasons
1140 the MD2 API is still compiled in by default.
1143 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1147 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1148 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1150 [Guenter <lists@gknw.net>]
1152 *) Fix the server certificate chain building code to use X509_verify_cert(),
1153 it used to have an ad-hoc builder which was unable to cope with anything
1154 other than a simple chain.
1155 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1157 *) Don't check self signed certificate signatures in X509_verify_cert()
1158 by default (a flag can override this): it just wastes time without
1159 adding any security. As a useful side effect self signed root CAs
1160 with non-FIPS digests are now usable in FIPS mode.
1163 *) In dtls1_process_out_of_seq_message() the check if the current message
1164 is already buffered was missing. For every new message was memory
1165 allocated, allowing an attacker to perform an denial of service attack
1166 with sending out of seq handshake messages until there is no memory
1167 left. Additionally every future messege was buffered, even if the
1168 sequence number made no sense and would be part of another handshake.
1169 So only messages with sequence numbers less than 10 in advance will be
1170 buffered. (CVE-2009-1378)
1171 [Robin Seggelmann, discovered by Daniel Mentz]
1173 *) Records are buffered if they arrive with a future epoch to be
1174 processed after finishing the corresponding handshake. There is
1175 currently no limitation to this buffer allowing an attacker to perform
1176 a DOS attack with sending records with future epochs until there is no
1177 memory left. This patch adds the pqueue_size() function to detemine
1178 the size of a buffer and limits the record buffer to 100 entries.
1180 [Robin Seggelmann, discovered by Daniel Mentz]
1182 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1183 parent structure is freed. (CVE-2009-1379)
1186 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1187 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1190 [Ilya O. <vrghost@gmail.com>]
1192 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1194 *) Disable renegotiation completely - this fixes a severe security
1195 problem (CVE-2009-3555) at the cost of breaking all
1196 renegotiation. Renegotiation can be re-enabled by setting
1197 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1198 run-time. This is really not recommended unless you know what
1202 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1204 *) Don't set val to NULL when freeing up structures, it is freed up by
1205 underlying code. If sizeof(void *) > sizeof(long) this can result in
1206 zeroing past the valid field. (CVE-2009-0789)
1207 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1209 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1210 checked correctly. This would allow some invalid signed attributes to
1211 appear to verify correctly. (CVE-2009-0591)
1212 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1214 *) Reject UniversalString and BMPString types with invalid lengths. This
1215 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1216 a legal length. (CVE-2009-0590)
1219 *) Set S/MIME signing as the default purpose rather than setting it
1220 unconditionally. This allows applications to override it at the store
1224 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1225 to handle some structures.
1228 *) Improve efficiency of mem_gets: don't search whole buffer each time
1230 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1232 *) New -hex option for openssl rand.
1235 *) Print out UTF8String and NumericString when parsing ASN1.
1238 *) Support NumericString type for name components.
1241 *) Allow CC in the environment to override the automatically chosen
1242 compiler. Note that nothing is done to ensure flags work with the
1246 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1248 *) Properly check EVP_VerifyFinal() and similar return values
1250 [Ben Laurie, Bodo Moeller, Google Security Team]
1252 *) Enable TLS extensions by default.
1255 *) Allow the CHIL engine to be loaded, whether the application is
1256 multithreaded or not. (This does not release the developer from the
1257 obligation to set up the dynamic locking callbacks.)
1258 [Sander Temme <sander@temme.net>]
1260 *) Use correct exit code if there is an error in dgst command.
1261 [Steve Henson; problem pointed out by Roland Dirlewanger]
1263 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1264 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1267 *) Add experimental JPAKE support, including demo authentication in
1268 s_client and s_server.
1271 *) Set the comparison function in v3_addr_canonize().
1272 [Rob Austein <sra@hactrn.net>]
1274 *) Add support for XMPP STARTTLS in s_client.
1275 [Philip Paeps <philip@freebsd.org>]
1277 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1278 to ensure that even with this option, only ciphersuites in the
1279 server's preference list will be accepted. (Note that the option
1280 applies only when resuming a session, so the earlier behavior was
1281 just about the algorithm choice for symmetric cryptography.)
1284 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1286 *) Fix NULL pointer dereference if a DTLS server received
1287 ChangeCipherSpec as first record (CVE-2009-1386).
1290 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1291 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1294 *) The fix in 0.9.8c that supposedly got rid of unsafe
1295 double-checked locking was incomplete for RSA blinding,
1296 addressing just one layer of what turns out to have been
1297 doubly unsafe triple-checked locking.
1299 So now fix this for real by retiring the MONT_HELPER macro
1300 in crypto/rsa/rsa_eay.c.
1302 [Bodo Moeller; problem pointed out by Marius Schilder]
1304 *) Various precautionary measures:
1306 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1308 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1309 (NB: This would require knowledge of the secret session ticket key
1310 to exploit, in which case you'd be SOL either way.)
1312 - Change bn_nist.c so that it will properly handle input BIGNUMs
1313 outside the expected range.
1315 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1318 [Neel Mehta, Bodo Moeller]
1320 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1321 the load fails. Useful for distros.
1322 [Ben Laurie and the FreeBSD team]
1324 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1327 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1330 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1332 This work was sponsored by Logica.
1335 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1336 keystores. Support for SSL/TLS client authentication too.
1337 Not compiled unless enable-capieng specified to Configure.
1339 This work was sponsored by Logica.
1342 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1343 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1344 attribute creation routines such as certifcate requests and PKCS#12
1348 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1350 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1351 handshake which could lead to a cilent crash as found using the
1352 Codenomicon TLS test suite (CVE-2008-1672)
1353 [Steve Henson, Mark Cox]
1355 *) Fix double free in TLS server name extensions which could lead to
1356 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1359 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1361 Clear the error queue to ensure that error entries left from
1362 older function calls do not interfere with the correct operation.
1363 [Lutz Jaenicke, Erik de Castro Lopo]
1365 *) Remove root CA certificates of commercial CAs:
1367 The OpenSSL project does not recommend any specific CA and does not
1368 have any policy with respect to including or excluding any CA.
1369 Therefore it does not make any sense to ship an arbitrary selection
1370 of root CA certificates with the OpenSSL software.
1373 *) RSA OAEP patches to fix two separate invalid memory reads.
1374 The first one involves inputs when 'lzero' is greater than
1375 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1376 before the beginning of from). The second one involves inputs where
1377 the 'db' section contains nothing but zeroes (there is a one-byte
1378 invalid read after the end of 'db').
1379 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1381 *) Partial backport from 0.9.9-dev:
1383 Introduce bn_mul_mont (dedicated Montgomery multiplication
1384 procedure) as a candidate for BIGNUM assembler implementation.
1385 While 0.9.9-dev uses assembler for various architectures, only
1386 x86_64 is available by default here in the 0.9.8 branch, and
1387 32-bit x86 is available through a compile-time setting.
1389 To try the 32-bit x86 assembler implementation, use Configure
1390 option "enable-montasm" (which exists only for this backport).
1392 As "enable-montasm" for 32-bit x86 disclaims code stability
1393 anyway, in this constellation we activate additional code
1394 backported from 0.9.9-dev for further performance improvements,
1395 namely BN_from_montgomery_word. (To enable this otherwise,
1396 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1398 [Andy Polyakov (backport partially by Bodo Moeller)]
1400 *) Add TLS session ticket callback. This allows an application to set
1401 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1402 values. This is useful for key rollover for example where several key
1403 sets may exist with different names.
1406 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1407 This was broken until now in 0.9.8 releases, such that the only way
1408 a registered ENGINE could be used (assuming it initialises
1409 successfully on the host) was to explicitly set it as the default
1410 for the relevant algorithms. This is in contradiction with 0.9.7
1411 behaviour and the documentation. With this fix, when an ENGINE is
1412 registered into a given algorithm's table of implementations, the
1413 'uptodate' flag is reset so that auto-discovery will be used next
1414 time a new context for that algorithm attempts to select an
1416 [Ian Lister (tweaked by Geoff Thorpe)]
1418 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1419 implemention in the following ways:
1421 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1424 Lack of BER streaming support means one pass streaming processing is
1425 only supported if data is detached: setting the streaming flag is
1426 ignored for embedded content.
1428 CMS support is disabled by default and must be explicitly enabled
1429 with the enable-cms configuration option.
1432 *) Update the GMP engine glue to do direct copies between BIGNUM and
1433 mpz_t when openssl and GMP use the same limb size. Otherwise the
1434 existing "conversion via a text string export" trick is still used.
1435 [Paul Sheer <paulsheer@gmail.com>]
1437 *) Zlib compression BIO. This is a filter BIO which compressed and
1438 uncompresses any data passed through it.
1441 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1442 RFC3394 compatible AES key wrapping.
1445 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1446 sets string data without copying. X509_ALGOR_set0() and
1447 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1448 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1449 from an X509_ATTRIBUTE structure optionally checking it occurs only
1450 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1454 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1455 to get the expected BN_FLG_CONSTTIME behavior.
1456 [Bodo Moeller (Google)]
1460 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1461 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1462 - added some more tests to do_tests.pl
1463 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1464 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1465 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1466 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1467 - various changes to netware.pl to enable gcc-cross builds on Win32
1469 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1470 - various changes to fix missing prototype warnings
1471 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1472 - added AES, WHIRLPOOL and CPUID assembler code to build files
1473 - added missing AES assembler make rules to mk1mf.pl
1474 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1475 [Guenter Knauf <eflash@gmx.net>]
1477 *) Implement certificate status request TLS extension defined in RFC3546.
1478 A client can set the appropriate parameters and receive the encoded
1479 OCSP response via a callback. A server can query the supplied parameters
1480 and set the encoded OCSP response in the callback. Add simplified examples
1481 to s_client and s_server.
1484 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1486 *) Fix various bugs:
1487 + Binary incompatibility of ssl_ctx_st structure
1488 + DTLS interoperation with non-compliant servers
1489 + Don't call get_session_cb() without proposed session
1490 + Fix ia64 assembler code
1491 [Andy Polyakov, Steve Henson]
1493 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1495 *) DTLS Handshake overhaul. There were longstanding issues with
1496 OpenSSL DTLS implementation, which were making it impossible for
1497 RFC 4347 compliant client to communicate with OpenSSL server.
1498 Unfortunately just fixing these incompatibilities would "cut off"
1499 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1500 server keeps tolerating non RFC compliant syntax. The opposite is
1501 not true, 0.9.8f client can not communicate with earlier server.
1502 This update even addresses CVE-2007-4995.
1505 *) Changes to avoid need for function casts in OpenSSL: some compilers
1506 (gcc 4.2 and later) reject their use.
1507 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1510 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1511 RFC4507bis. The encrypted ticket format is an encrypted encoded
1512 SSL_SESSION structure, that way new session features are automatically
1515 If a client application caches session in an SSL_SESSION structure
1516 support is transparent because tickets are now stored in the encoded
1519 The SSL_CTX structure automatically generates keys for ticket
1520 protection in servers so again support should be possible
1521 with no application modification.
1523 If a client or server wishes to disable RFC4507 support then the option
1524 SSL_OP_NO_TICKET can be set.
1526 Add a TLS extension debugging callback to allow the contents of any client
1527 or server extensions to be examined.
1529 This work was sponsored by Google.
1532 *) Add initial support for TLS extensions, specifically for the server_name
1533 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1534 have new members for a host name. The SSL data structure has an
1535 additional member SSL_CTX *initial_ctx so that new sessions can be
1536 stored in that context to allow for session resumption, even after the
1537 SSL has been switched to a new SSL_CTX in reaction to a client's
1538 server_name extension.
1540 New functions (subject to change):
1542 SSL_get_servername()
1543 SSL_get_servername_type()
1546 New CTRL codes and macros (subject to change):
1548 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1549 - SSL_CTX_set_tlsext_servername_callback()
1550 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1551 - SSL_CTX_set_tlsext_servername_arg()
1552 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1554 openssl s_client has a new '-servername ...' option.
1556 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1557 '-key2 ...', '-servername_fatal' (subject to change). This allows
1558 testing the HostName extension for a specific single host name ('-cert'
1559 and '-key' remain fallbacks for handshakes without HostName
1560 negotiation). If the unrecogninzed_name alert has to be sent, this by
1561 default is a warning; it becomes fatal with the '-servername_fatal'
1564 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1566 *) Add AES and SSE2 assembly language support to VC++ build.
1569 *) Mitigate attack on final subtraction in Montgomery reduction.
1572 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1573 (which previously caused an internal error).
1576 *) Squeeze another 10% out of IGE mode when in != out.
1579 *) AES IGE mode speedup.
1580 [Dean Gaudet (Google)]
1582 *) Add the Korean symmetric 128-bit cipher SEED (see
1583 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1584 add SEED ciphersuites from RFC 4162:
1586 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1587 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1588 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1589 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1591 To minimize changes between patchlevels in the OpenSSL 0.9.8
1592 series, SEED remains excluded from compilation unless OpenSSL
1593 is configured with 'enable-seed'.
1594 [KISA, Bodo Moeller]
1596 *) Mitigate branch prediction attacks, which can be practical if a
1597 single processor is shared, allowing a spy process to extract
1598 information. For detailed background information, see
1599 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1600 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1601 and Necessary Software Countermeasures"). The core of the change
1602 are new versions BN_div_no_branch() and
1603 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1604 respectively, which are slower, but avoid the security-relevant
1605 conditional branches. These are automatically called by BN_div()
1606 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1607 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1608 remove a conditional branch.
1610 BN_FLG_CONSTTIME is the new name for the previous
1611 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1612 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1613 in the exponent causes BN_mod_exp_mont() to use the alternative
1614 implementation in BN_mod_exp_mont_consttime().) The old name
1615 remains as a deprecated alias.
1617 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1618 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1619 constant-time implementations for more than just exponentiation.
1620 Here too the old name is kept as a deprecated alias.
1622 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1623 the BN_BLINDING structure gets an independent copy of the
1624 modulus. This means that the previous "BIGNUM *m" argument to
1625 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1626 essentially becomes "const BIGNUM *m", although we can't actually
1627 change this in the header file before 0.9.9. It allows
1628 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1629 enable BN_FLG_CONSTTIME.
1631 [Matthew D Wood (Intel Corp)]
1633 *) In the SSL/TLS server implementation, be strict about session ID
1634 context matching (which matters if an application uses a single
1635 external cache for different purposes). Previously,
1636 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1637 set. This did ensure strict client verification, but meant that,
1638 with applications using a single external cache for quite
1639 different requirements, clients could circumvent ciphersuite
1640 restrictions for a given session ID context by starting a session
1641 in a different context.
1644 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1645 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1646 authentication-only ciphersuites.
1649 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1650 not complete and could lead to a possible single byte overflow
1651 (CVE-2007-5135) [Ben Laurie]
1653 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1655 *) Since AES128 and AES256 (and similarly Camellia128 and
1656 Camellia256) share a single mask bit in the logic of
1657 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1658 kludge to work properly if AES128 is available and AES256 isn't
1659 (or if Camellia128 is available and Camellia256 isn't).
1662 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1663 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1664 When a point or a seed is encoded in a BIT STRING, we need to
1665 prevent the removal of trailing zero bits to get the proper DER
1666 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1667 of a NamedBitList, for which trailing 0 bits need to be removed.)
1670 *) Have SSL/TLS server implementation tolerate "mismatched" record
1671 protocol version while receiving ClientHello even if the
1672 ClientHello is fragmented. (The server can't insist on the
1673 particular protocol version it has chosen before the ServerHello
1674 message has informed the client about his choice.)
1677 *) Add RFC 3779 support.
1678 [Rob Austein for ARIN, Ben Laurie]
1680 *) Load error codes if they are not already present instead of using a
1681 static variable. This allows them to be cleanly unloaded and reloaded.
1682 Improve header file function name parsing.
1685 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1686 or CAPABILITY handshake as required by RFCs.
1689 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1691 *) Introduce limits to prevent malicious keys being able to
1692 cause a denial of service. (CVE-2006-2940)
1693 [Steve Henson, Bodo Moeller]
1695 *) Fix ASN.1 parsing of certain invalid structures that can result
1696 in a denial of service. (CVE-2006-2937) [Steve Henson]
1698 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1699 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1701 *) Fix SSL client code which could crash if connecting to a
1702 malicious SSLv2 server. (CVE-2006-4343)
1703 [Tavis Ormandy and Will Drewry, Google Security Team]
1705 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1706 match only those. Before that, "AES256-SHA" would be interpreted
1707 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1708 the same strength classification in 0.9.7h) as we currently only
1709 have a single AES bit in the ciphersuite description bitmap.
1710 That change, however, also applied to ciphersuite strings such as
1711 "RC4-MD5" that intentionally matched multiple ciphersuites --
1712 namely, SSL 2.0 ciphersuites in addition to the more common ones
1713 from SSL 3.0/TLS 1.0.
1715 So we change the selection algorithm again: Naming an explicit
1716 ciphersuite selects this one ciphersuite, and any other similar
1717 ciphersuite (same bitmap) from *other* protocol versions.
1718 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1719 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1721 Since SSL 2.0 does not have any ciphersuites for which the
1722 128/256 bit distinction would be relevant, this works for now.
1723 The proper fix will be to use different bits for AES128 and
1724 AES256, which would have avoided the problems from the beginning;
1725 however, bits are scarce, so we can only do this in a new release
1726 (not just a patchlevel) when we can change the SSL_CIPHER
1727 definition to split the single 'unsigned long mask' bitmap into
1728 multiple values to extend the available space.
1732 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1734 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1735 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1737 *) Add AES IGE and biIGE modes.
1740 *) Change the Unix randomness entropy gathering to use poll() when
1741 possible instead of select(), since the latter has some
1742 undesirable limitations.
1743 [Darryl Miles via Richard Levitte and Bodo Moeller]
1745 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1746 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1747 cannot be implicitly activated as part of, e.g., the "AES" alias.
1748 However, please upgrade to OpenSSL 0.9.9[-dev] for
1749 non-experimental use of the ECC ciphersuites to get TLS extension
1750 support, which is required for curve and point format negotiation
1751 to avoid potential handshake problems.
1754 *) Disable rogue ciphersuites:
1756 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1757 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1758 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1760 The latter two were purportedly from
1761 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1764 Also deactivate the remaining ciphersuites from
1765 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1766 unofficial, and the ID has long expired.
1769 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1770 dual-core machines) and other potential thread-safety issues.
1773 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1774 versions), which is now available for royalty-free use
1775 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1776 Also, add Camellia TLS ciphersuites from RFC 4132.
1778 To minimize changes between patchlevels in the OpenSSL 0.9.8
1779 series, Camellia remains excluded from compilation unless OpenSSL
1780 is configured with 'enable-camellia'.
1783 *) Disable the padding bug check when compression is in use. The padding
1784 bug check assumes the first packet is of even length, this is not
1785 necessarily true if compresssion is enabled and can result in false
1786 positives causing handshake failure. The actual bug test is ancient
1787 code so it is hoped that implementations will either have fixed it by
1788 now or any which still have the bug do not support compression.
1791 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1793 *) When applying a cipher rule check to see if string match is an explicit
1794 cipher suite and only match that one cipher suite if it is.
1797 *) Link in manifests for VC++ if needed.
1798 [Austin Ziegler <halostatue@gmail.com>]
1800 *) Update support for ECC-based TLS ciphersuites according to
1801 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1802 TLS extensions, which are supported starting with the 0.9.9
1803 branch, not in the OpenSSL 0.9.8 branch).
1806 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1807 opaque EVP_CIPHER_CTX handling.
1810 *) Fixes and enhancements to zlib compression code. We now only use
1811 "zlib1.dll" and use the default __cdecl calling convention on Win32
1812 to conform with the standards mentioned here:
1813 http://www.zlib.net/DLL_FAQ.txt
1814 Static zlib linking now works on Windows and the new --with-zlib-include
1815 --with-zlib-lib options to Configure can be used to supply the location
1816 of the headers and library. Gracefully handle case where zlib library
1820 *) Several fixes and enhancements to the OID generation code. The old code
1821 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1822 handle numbers larger than ULONG_MAX, truncated printing and had a
1823 non standard OBJ_obj2txt() behaviour.
1826 *) Add support for building of engines under engine/ as shared libraries
1827 under VC++ build system.
1830 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1831 Hopefully, we will not see any false combination of paths any more.
1834 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1836 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1837 (part of SSL_OP_ALL). This option used to disable the
1838 countermeasure against man-in-the-middle protocol-version
1839 rollback in the SSL 2.0 server implementation, which is a bad
1840 idea. (CVE-2005-2969)
1842 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1843 for Information Security, National Institute of Advanced Industrial
1844 Science and Technology [AIST], Japan)]
1846 *) Add two function to clear and return the verify parameter flags.
1849 *) Keep cipherlists sorted in the source instead of sorting them at
1850 runtime, thus removing the need for a lock.
1853 *) Avoid some small subgroup attacks in Diffie-Hellman.
1854 [Nick Mathewson and Ben Laurie]
1856 *) Add functions for well-known primes.
1859 *) Extended Windows CE support.
1860 [Satoshi Nakamura and Andy Polyakov]
1862 *) Initialize SSL_METHOD structures at compile time instead of during
1863 runtime, thus removing the need for a lock.
1866 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1867 attempting to decrypt each encrypted key in turn. Add support to
1871 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1873 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1876 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1879 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1880 key into the same file any more.
1883 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1886 *) Add -utf8 command line and config file option to 'ca'.
1887 [Stefan <stf@udoma.org]
1889 *) Removed the macro des_crypt(), as it seems to conflict with some
1890 libraries. Use DES_crypt().
1893 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1894 involves renaming the source and generated shared-libs for
1895 both. The engines will accept the corrected or legacy ids
1896 ('ncipher' and '4758_cca' respectively) when binding. NB,
1897 this only applies when building 'shared'.
1898 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1900 *) Add attribute functions to EVP_PKEY structure. Modify
1901 PKCS12_create() to recognize a CSP name attribute and
1902 use it. Make -CSP option work again in pkcs12 utility.
1905 *) Add new functionality to the bn blinding code:
1906 - automatic re-creation of the BN_BLINDING parameters after
1907 a fixed number of uses (currently 32)
1908 - add new function for parameter creation
1909 - introduce flags to control the update behaviour of the
1910 BN_BLINDING parameters
1911 - hide BN_BLINDING structure
1912 Add a second BN_BLINDING slot to the RSA structure to improve
1913 performance when a single RSA object is shared among several
1917 *) Add support for DTLS.
1918 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1920 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1921 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1924 *) Remove buggy and incompletet DH cert support from
1925 ssl/ssl_rsa.c and ssl/s3_both.c
1928 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1929 the apps/openssl applications.
1932 *) Compile clean with "-Wall -Wmissing-prototypes
1933 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1934 DEBUG_SAFESTACK must also be set.
1937 *) Change ./Configure so that certain algorithms can be disabled by default.
1938 The new counterpiece to "no-xxx" is "enable-xxx".
1940 The patented RC5 and MDC2 algorithms will now be disabled unless
1941 "enable-rc5" and "enable-mdc2", respectively, are specified.
1943 (IDEA remains enabled despite being patented. This is because IDEA
1944 is frequently required for interoperability, and there is no license
1945 fee for non-commercial use. As before, "no-idea" can be used to
1946 avoid this algorithm.)
1950 *) Add processing of proxy certificates (see RFC 3820). This work was
1951 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1952 EGEE (Enabling Grids for E-science in Europe).
1955 *) RC4 performance overhaul on modern architectures/implementations, such
1956 as Intel P4, IA-64 and AMD64.
1959 *) New utility extract-section.pl. This can be used specify an alternative
1960 section number in a pod file instead of having to treat each file as
1961 a separate case in Makefile. This can be done by adding two lines to the
1964 =for comment openssl_section:XXX
1966 The blank line is mandatory.
1970 *) New arguments -certform, -keyform and -pass for s_client and s_server
1971 to allow alternative format key and certificate files and passphrase
1975 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
1976 update associated structures and add various utility functions.
1978 Add new policy related verify parameters, include policy checking in
1979 standard verify code. Enhance 'smime' application with extra parameters
1980 to support policy checking and print out.
1983 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
1984 Nehemiah processors. These extensions support AES encryption in hardware
1985 as well as RNG (though RNG support is currently disabled).
1986 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
1988 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
1991 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
1992 [Andy Polyakov and a number of other people]
1994 *) Improved PowerPC platform support. Most notably BIGNUM assembler
1995 implementation contributed by IBM.
1996 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
1998 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
1999 exponent rather than 'unsigned long'. There is a corresponding change to
2000 the new 'rsa_keygen' element of the RSA_METHOD structure.
2001 [Jelte Jansen, Geoff Thorpe]
2003 *) Functionality for creating the initial serial number file is now
2004 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2006 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2007 number file to 1, which is bound to cause problems. To avoid
2008 the problems while respecting compatibility between different 0.9.7
2009 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2010 CA.pl for serial number initialization. With the new release 0.9.8,
2011 we can fix the problem directly in the 'ca' utility.)
2014 *) Reduced header interdepencies by declaring more opaque objects in
2015 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2016 give fewer recursive includes, which could break lazy source code - so
2017 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2018 developers should define this symbol when building and using openssl to
2019 ensure they track the recommended behaviour, interfaces, [etc], but
2020 backwards-compatible behaviour prevails when this isn't defined.
2023 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2026 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2027 This will generate a random key of the appropriate length based on the
2028 cipher context. The EVP_CIPHER can provide its own random key generation
2029 routine to support keys of a specific form. This is used in the des and
2030 3des routines to generate a key of the correct parity. Update S/MIME
2031 code to use new functions and hence generate correct parity DES keys.
2032 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2033 valid (weak or incorrect parity).
2036 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2037 as looking them up. This is useful when the verified structure may contain
2038 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2039 present unless the new PKCS7_NO_CRL flag is asserted.
2042 *) Extend ASN1 oid configuration module. It now additionally accepts the
2045 shortName = some long name, 1.2.3.4
2048 *) Reimplemented the BN_CTX implementation. There is now no more static
2049 limitation on the number of variables it can handle nor the depth of the
2050 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2051 information can now expand as required, and rather than having a single
2052 static array of bignums, BN_CTX now uses a linked-list of such arrays
2053 allowing it to expand on demand whilst maintaining the usefulness of
2054 BN_CTX's "bundling".
2057 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2058 to allow all RSA operations to function using a single BN_CTX.
2061 *) Preliminary support for certificate policy evaluation and checking. This
2062 is initially intended to pass the tests outlined in "Conformance Testing
2063 of Relying Party Client Certificate Path Processing Logic" v1.07.
2066 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2067 remained unused and not that useful. A variety of other little bignum
2068 tweaks and fixes have also been made continuing on from the audit (see
2072 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2073 associated ASN1, EVP and SSL functions and old ASN1 macros.
2076 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2077 and this should never fail. So the return value from the use of
2078 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2079 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2082 *) BN_CTX_get() should return zero-valued bignums, providing the same
2083 initialised value as BN_new().
2084 [Geoff Thorpe, suggested by Ulf Möller]
2086 *) Support for inhibitAnyPolicy certificate extension.
2089 *) An audit of the BIGNUM code is underway, for which debugging code is
2090 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2091 is considered valid when processing BIGNUMs, and causes execution to
2092 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2093 further steps are taken to deliberately pollute unused data in BIGNUM
2094 structures to try and expose faulty code further on. For now, openssl will
2095 (in its default mode of operation) continue to tolerate the inconsistent
2096 forms that it has tolerated in the past, but authors and packagers should
2097 consider trying openssl and their own applications when compiled with
2098 these debugging symbols defined. It will help highlight potential bugs in
2099 their own code, and will improve the test coverage for OpenSSL itself. At
2100 some point, these tighter rules will become openssl's default to improve
2101 maintainability, though the assert()s and other overheads will remain only
2102 in debugging configurations. See bn.h for more details.
2103 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2105 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2106 that can only be obtained through BN_CTX_new() (which implicitly
2107 initialises it). The presence of this function only made it possible
2108 to overwrite an existing structure (and cause memory leaks).
2111 *) Because of the callback-based approach for implementing LHASH as a
2112 template type, lh_insert() adds opaque objects to hash-tables and
2113 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2114 to clean up those corresponding objects before destroying the hash table
2115 (and losing the object pointers). So some over-zealous constifications in
2116 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2117 objects as "const" and the lh_doall[_arg] callback wrappers are not
2118 prototyped to have "const" restrictions on the object pointers they are
2119 given (and so aren't required to cast them away any more).
2122 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2123 (speed) prefers to use its own implementation. The two implementations
2124 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2125 its object type properly exposed (MS_TM) instead of casting to/from "char
2126 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2127 aren't necessarily the greatest nomenclatures - but this is what was used
2128 internally to the implementation so I've used that for now.
2131 *) Ensure that deprecated functions do not get compiled when
2132 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2133 the self-tests were still using deprecated key-generation functions so
2134 these have been updated also.
2137 *) Reorganise PKCS#7 code to separate the digest location functionality
2138 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2139 New function PKCS7_set_digest() to set the digest type for PKCS#7
2140 digestedData type. Add additional code to correctly generate the
2141 digestedData type and add support for this type in PKCS7 initialization
2145 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2146 structure of type "other".
2149 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2150 sure the loop does correctly stop and breaking ("division by zero")
2151 modulus operations are not performed. The (pre-generated) prime
2152 table crypto/bn/bn_prime.h was already correct, but it could not be
2153 re-generated on some platforms because of the "division by zero"
2154 situation in the script.
2155 [Ralf S. Engelschall]
2157 *) Update support for ECC-based TLS ciphersuites according to
2158 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2159 SHA-1 now is only used for "small" curves (where the
2160 representation of a field element takes up to 24 bytes); for
2161 larger curves, the field element resulting from ECDH is directly
2162 used as premaster secret.
2163 [Douglas Stebila (Sun Microsystems Laboratories)]
2165 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2166 curve secp160r1 to the tests.
2167 [Douglas Stebila (Sun Microsystems Laboratories)]
2169 *) Add the possibility to load symbols globally with DSO.
2170 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2172 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2173 control of the error stack.
2176 *) Add support for STORE in ENGINE.
2179 *) Add the STORE type. The intention is to provide a common interface
2180 to certificate and key stores, be they simple file-based stores, or
2181 HSM-type store, or LDAP stores, or...
2182 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2185 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2186 pass a list of arguments to any function as well as provide a way
2187 for a function to pass data back to the caller.
2190 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2191 works like BUF_strdup() but can be used to duplicate a portion of
2192 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2196 *) Add the function sk_find_ex() which works like sk_find(), but will
2197 return an index to an element even if an exact match couldn't be
2198 found. The index is guaranteed to point at the element where the
2199 searched-for key would be inserted to preserve sorting order.
2202 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2203 takes an extra flags argument for optional functionality. Currently,
2204 the following flags are defined:
2206 OBJ_BSEARCH_VALUE_ON_NOMATCH
2207 This one gets OBJ_bsearch_ex() to return a pointer to the first
2208 element where the comparing function returns a negative or zero
2211 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2212 This one gets OBJ_bsearch_ex() to return a pointer to the first
2213 element where the comparing function returns zero. This is useful
2214 if there are more than one element where the comparing function
2218 *) Make it possible to create self-signed certificates with 'openssl ca'
2219 in such a way that the self-signed certificate becomes part of the
2220 CA database and uses the same mechanisms for serial number generation
2221 as all other certificate signing. The new flag '-selfsign' enables
2222 this functionality. Adapt CA.sh and CA.pl.in.
2225 *) Add functionality to check the public key of a certificate request
2226 against a given private. This is useful to check that a certificate
2227 request can be signed by that key (self-signing).
2230 *) Make it possible to have multiple active certificates with the same
2231 subject in the CA index file. This is done only if the keyword
2232 'unique_subject' is set to 'no' in the main CA section (default
2233 if 'CA_default') of the configuration file. The value is saved
2234 with the database itself in a separate index attribute file,
2235 named like the index file with '.attr' appended to the name.
2238 *) Generate muti valued AVAs using '+' notation in config files for
2242 *) Support for nameConstraints certificate extension.
2245 *) Support for policyConstraints certificate extension.
2248 *) Support for policyMappings certificate extension.
2251 *) Make sure the default DSA_METHOD implementation only uses its
2252 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2253 and change its own handlers to be NULL so as to remove unnecessary
2254 indirection. This lets alternative implementations fallback to the
2255 default implementation more easily.
2258 *) Support for directoryName in GeneralName related extensions
2262 *) Make it possible to link applications using Makefile.shared.
2263 Make that possible even when linking against static libraries!
2266 *) Support for single pass processing for S/MIME signing. This now
2267 means that S/MIME signing can be done from a pipe, in addition
2268 cleartext signing (multipart/signed type) is effectively streaming
2269 and the signed data does not need to be all held in memory.
2271 This is done with a new flag PKCS7_STREAM. When this flag is set
2272 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2273 is done after the data is output (and digests calculated) in
2274 SMIME_write_PKCS7().
2277 *) Add full support for -rpath/-R, both in shared libraries and
2278 applications, at least on the platforms where it's known how
2282 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2283 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2284 will now compute a table of multiples of the generator that
2285 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2286 faster (notably in the case of a single point multiplication,
2287 scalar * generator).
2288 [Nils Larsch, Bodo Moeller]
2290 *) IPv6 support for certificate extensions. The various extensions
2291 which use the IP:a.b.c.d can now take IPv6 addresses using the
2292 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2296 *) Added an ENGINE that implements RSA by performing private key
2297 exponentiations with the GMP library. The conversions to and from
2298 GMP's mpz_t format aren't optimised nor are any montgomery forms
2299 cached, and on x86 it appears OpenSSL's own performance has caught up.
2300 However there are likely to be other architectures where GMP could
2301 provide a boost. This ENGINE is not built in by default, but it can be
2302 specified at Configure time and should be accompanied by the necessary
2303 linker additions, eg;
2304 ./config -DOPENSSL_USE_GMP -lgmp
2307 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2308 testing availability of engines with "-t" - the old behaviour is
2309 produced by increasing the feature's verbosity with "-tt".
2312 *) ECDSA routines: under certain error conditions uninitialized BN objects
2313 could be freed. Solution: make sure initialization is performed early
2314 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2318 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2319 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2320 software implementations. For DSA and DH, parameter generation can
2321 also be overriden by providing the appropriate method callbacks.
2324 *) Change the "progress" mechanism used in key-generation and
2325 primality testing to functions that take a new BN_GENCB pointer in
2326 place of callback/argument pairs. The new API functions have "_ex"
2327 postfixes and the older functions are reimplemented as wrappers for
2328 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2329 declarations of the old functions to help (graceful) attempts to
2330 migrate to the new functions. Also, the new key-generation API
2331 functions operate on a caller-supplied key-structure and return
2332 success/failure rather than returning a key or NULL - this is to
2333 help make "keygen" another member function of RSA_METHOD etc.
2335 Example for using the new callback interface:
2337 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2341 BN_GENCB_set(&my_cb, my_callback, my_arg);
2343 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2344 /* For the meaning of a, b in calls to my_callback(), see the
2345 * documentation of the function that calls the callback.
2346 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2347 * my_callback should return 1 if it wants BN_is_prime_ex()
2348 * to continue, or 0 to stop.
2353 *) Change the ZLIB compression method to be stateful, and make it
2354 available to TLS with the number defined in
2355 draft-ietf-tls-compression-04.txt.
2358 *) Add the ASN.1 structures and functions for CertificatePair, which
2359 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2361 CertificatePair ::= SEQUENCE {
2362 forward [0] Certificate OPTIONAL,
2363 reverse [1] Certificate OPTIONAL,
2364 -- at least one of the pair shall be present -- }
2366 Also implement the PEM functions to read and write certificate
2367 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2369 This needed to be defined, mostly for the sake of the LDAP
2370 attribute crossCertificatePair, but may prove useful elsewhere as
2374 *) Make it possible to inhibit symlinking of shared libraries in
2375 Makefile.shared, for Cygwin's sake.
2378 *) Extend the BIGNUM API by creating a function
2379 void BN_set_negative(BIGNUM *a, int neg);
2380 and a macro that behave like
2381 int BN_is_negative(const BIGNUM *a);
2383 to avoid the need to access 'a->neg' directly in applications.
2386 *) Implement fast modular reduction for pseudo-Mersenne primes
2387 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2388 EC_GROUP_new_curve_GFp() will now automatically use this
2390 [Nils Larsch <nla@trustcenter.de>]
2392 *) Add new lock type (CRYPTO_LOCK_BN).
2395 *) Change the ENGINE framework to automatically load engines
2396 dynamically from specific directories unless they could be
2397 found to already be built in or loaded. Move all the
2398 current engines except for the cryptodev one to a new
2400 The engines in engines/ are built as shared libraries if
2401 the "shared" options was given to ./Configure or ./config.
2402 Otherwise, they are inserted in libcrypto.a.
2403 /usr/local/ssl/engines is the default directory for dynamic
2404 engines, but that can be overriden at configure time through
2405 the usual use of --prefix and/or --openssldir, and at run
2406 time with the environment variable OPENSSL_ENGINES.
2407 [Geoff Thorpe and Richard Levitte]
2409 *) Add Makefile.shared, a helper makefile to build shared
2410 libraries. Addapt Makefile.org.
2413 *) Add version info to Win32 DLLs.
2414 [Peter 'Luna' Runestig" <peter@runestig.com>]
2416 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2417 can be added using this API to created arbitrary PKCS#12
2418 files while avoiding the low level API.
2420 New options to PKCS12_create(), key or cert can be NULL and
2421 will then be omitted from the output file. The encryption
2422 algorithm NIDs can be set to -1 for no encryption, the mac
2423 iteration count can be set to 0 to omit the mac.
2425 Enhance pkcs12 utility by making the -nokeys and -nocerts
2426 options work when creating a PKCS#12 file. New option -nomac
2427 to omit the mac, NONE can be set for an encryption algorithm.
2428 New code is modified to use the enhanced PKCS12_create()
2429 instead of the low level API.
2432 *) Extend ASN1 encoder to support indefinite length constructed
2433 encoding. This can output sequences tags and octet strings in
2434 this form. Modify pk7_asn1.c to support indefinite length
2435 encoding. This is experimental and needs additional code to
2436 be useful, such as an ASN1 bio and some enhanced streaming
2439 Extend template encode functionality so that tagging is passed
2440 down to the template encoder.
2443 *) Let 'openssl req' fail if an argument to '-newkey' is not
2444 recognized instead of using RSA as a default.
2447 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2448 As these are not official, they are not included in "ALL";
2449 the "ECCdraft" ciphersuite group alias can be used to select them.
2450 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2452 *) Add ECDH engine support.
2453 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2455 *) Add ECDH in new directory crypto/ecdh/.
2456 [Douglas Stebila (Sun Microsystems Laboratories)]
2458 *) Let BN_rand_range() abort with an error after 100 iterations
2459 without success (which indicates a broken PRNG).
2462 *) Change BN_mod_sqrt() so that it verifies that the input value
2463 is really the square of the return value. (Previously,
2464 BN_mod_sqrt would show GIGO behaviour.)
2467 *) Add named elliptic curves over binary fields from X9.62, SECG,
2468 and WAP/WTLS; add OIDs that were still missing.
2470 [Sheueling Chang Shantz and Douglas Stebila
2471 (Sun Microsystems Laboratories)]
2473 *) Extend the EC library for elliptic curves over binary fields
2474 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2477 EC_GF2m_simple_method
2481 EC_GROUP_new_curve_GF2m
2482 EC_GROUP_set_curve_GF2m
2483 EC_GROUP_get_curve_GF2m
2484 EC_POINT_set_affine_coordinates_GF2m
2485 EC_POINT_get_affine_coordinates_GF2m
2486 EC_POINT_set_compressed_coordinates_GF2m
2488 Point compression for binary fields is disabled by default for
2489 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2492 As binary polynomials are represented as BIGNUMs, various members
2493 of the EC_GROUP and EC_POINT data structures can be shared
2494 between the implementations for prime fields and binary fields;
2495 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2496 are essentially identical to their ..._GFp counterparts.
2497 (For simplicity, the '..._GFp' prefix has been dropped from
2498 various internal method names.)
2500 An internal 'field_div' method (similar to 'field_mul' and
2501 'field_sqr') has been added; this is used only for binary fields.
2503 [Sheueling Chang Shantz and Douglas Stebila
2504 (Sun Microsystems Laboratories)]
2506 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2507 through methods ('mul', 'precompute_mult').
2509 The generic implementations (now internally called 'ec_wNAF_mul'
2510 and 'ec_wNAF_precomputed_mult') remain the default if these
2511 methods are undefined.
2513 [Sheueling Chang Shantz and Douglas Stebila
2514 (Sun Microsystems Laboratories)]
2516 *) New function EC_GROUP_get_degree, which is defined through
2517 EC_METHOD. For curves over prime fields, this returns the bit
2518 length of the modulus.
2520 [Sheueling Chang Shantz and Douglas Stebila
2521 (Sun Microsystems Laboratories)]
2523 *) New functions EC_GROUP_dup, EC_POINT_dup.
2524 (These simply call ..._new and ..._copy).
2526 [Sheueling Chang Shantz and Douglas Stebila
2527 (Sun Microsystems Laboratories)]
2529 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2530 Polynomials are represented as BIGNUMs (where the sign bit is not
2531 used) in the following functions [macros]:
2534 BN_GF2m_sub [= BN_GF2m_add]
2535 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2536 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2537 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2539 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2540 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2541 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2542 BN_GF2m_cmp [= BN_ucmp]
2544 (Note that only the 'mod' functions are actually for fields GF(2^m).
2545 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2547 For some functions, an the irreducible polynomial defining a
2548 field can be given as an 'unsigned int[]' with strictly
2549 decreasing elements giving the indices of those bits that are set;
2550 i.e., p[] represents the polynomial
2551 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2553 p[0] > p[1] > ... > p[k] = 0.
2554 This applies to the following functions:
2559 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2560 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2562 BN_GF2m_mod_sqrt_arr
2563 BN_GF2m_mod_solve_quad_arr
2567 Conversion can be performed by the following functions:
2572 bntest.c has additional tests for binary polynomial arithmetic.
2574 Two implementations for BN_GF2m_mod_div() are available.
2575 The default algorithm simply uses BN_GF2m_mod_inv() and
2576 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2577 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2578 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2580 [Sheueling Chang Shantz and Douglas Stebila
2581 (Sun Microsystems Laboratories)]
2583 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2584 functionality is disabled at compile-time.
2585 [Douglas Stebila <douglas.stebila@sun.com>]
2587 *) Change default behaviour of 'openssl asn1parse' so that more
2588 information is visible when viewing, e.g., a certificate:
2590 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2591 mode the content of non-printable OCTET STRINGs is output in a
2592 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2593 avoid the appearance of a printable string.
2594 [Nils Larsch <nla@trustcenter.de>]
2596 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2598 EC_GROUP_set_asn1_flag()
2599 EC_GROUP_get_asn1_flag()
2600 EC_GROUP_set_point_conversion_form()
2601 EC_GROUP_get_point_conversion_form()
2602 These control ASN1 encoding details:
2603 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2604 has been set to OPENSSL_EC_NAMED_CURVE.
2605 - Points are encoded in uncompressed form by default; options for
2606 asn1_for are as for point2oct, namely
2607 POINT_CONVERSION_COMPRESSED
2608 POINT_CONVERSION_UNCOMPRESSED
2609 POINT_CONVERSION_HYBRID
2611 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2614 EC_GROUP_get0_seed()
2615 EC_GROUP_get_seed_len()
2616 This is used only for ASN1 purposes (so far).
2617 [Nils Larsch <nla@trustcenter.de>]
2619 *) Add 'field_type' member to EC_METHOD, which holds the NID
2620 of the appropriate field type OID. The new function
2621 EC_METHOD_get_field_type() returns this value.
2622 [Nils Larsch <nla@trustcenter.de>]
2627 EC_POINT_point2hex()
2628 EC_POINT_hex2point()
2629 providing useful interfaces to EC_POINT_point2oct() and
2630 EC_POINT_oct2point().
2631 [Nils Larsch <nla@trustcenter.de>]
2633 *) Change internals of the EC library so that the functions
2634 EC_GROUP_set_generator()
2635 EC_GROUP_get_generator()
2636 EC_GROUP_get_order()
2637 EC_GROUP_get_cofactor()
2638 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2639 to methods, which would lead to unnecessary code duplication when
2640 adding different types of curves.
2641 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2643 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2644 arithmetic, and such that modified wNAFs are generated
2645 (which avoid length expansion in many cases).
2648 *) Add a function EC_GROUP_check_discriminant() (defined via
2649 EC_METHOD) that verifies that the curve discriminant is non-zero.
2651 Add a function EC_GROUP_check() that makes some sanity tests
2652 on a EC_GROUP, its generator and order. This includes
2653 EC_GROUP_check_discriminant().
2654 [Nils Larsch <nla@trustcenter.de>]
2656 *) Add ECDSA in new directory crypto/ecdsa/.
2658 Add applications 'openssl ecparam' and 'openssl ecdsa'
2659 (these are based on 'openssl dsaparam' and 'openssl dsa').
2661 ECDSA support is also included in various other files across the
2662 library. Most notably,
2663 - 'openssl req' now has a '-newkey ecdsa:file' option;
2664 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2665 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2666 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2667 them suitable for ECDSA where domain parameters must be
2668 extracted before the specific public key;
2669 - ECDSA engine support has been added.
2670 [Nils Larsch <nla@trustcenter.de>]
2672 *) Include some named elliptic curves, and add OIDs from X9.62,
2673 SECG, and WAP/WTLS. Each curve can be obtained from the new
2675 EC_GROUP_new_by_curve_name(),
2676 and the list of available named curves can be obtained with
2677 EC_get_builtin_curves().
2678 Also add a 'curve_name' member to EC_GROUP objects, which can be
2680 EC_GROUP_set_curve_name()
2681 EC_GROUP_get_curve_name()
2682 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2684 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2685 was actually never needed) and in BN_mul(). The removal in BN_mul()
2686 required a small change in bn_mul_part_recursive() and the addition
2687 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2688 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2689 bn_sub_words() and bn_add_words() except they take arrays with
2693 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2695 *) Cleanse PEM buffers before freeing them since they may contain
2697 [Benjamin Bennett <ben@psc.edu>]
2699 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2700 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2701 authentication-only ciphersuites.
2704 *) Since AES128 and AES256 share a single mask bit in the logic of
2705 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2706 kludge to work properly if AES128 is available and AES256 isn't.
2709 *) Expand security boundary to match 1.1.1 module.
2712 *) Remove redundant features: hash file source, editing of test vectors
2713 modify fipsld to use external fips_premain.c signature.
2716 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2717 run algorithm test programs.
2720 *) Make algorithm test programs more tolerant of whitespace.
2723 *) Have SSL/TLS server implementation tolerate "mismatched" record
2724 protocol version while receiving ClientHello even if the
2725 ClientHello is fragmented. (The server can't insist on the
2726 particular protocol version it has chosen before the ServerHello
2727 message has informed the client about his choice.)
2730 *) Load error codes if they are not already present instead of using a
2731 static variable. This allows them to be cleanly unloaded and reloaded.
2734 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2736 *) Introduce limits to prevent malicious keys being able to
2737 cause a denial of service. (CVE-2006-2940)
2738 [Steve Henson, Bodo Moeller]
2740 *) Fix ASN.1 parsing of certain invalid structures that can result
2741 in a denial of service. (CVE-2006-2937) [Steve Henson]
2743 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2744 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2746 *) Fix SSL client code which could crash if connecting to a
2747 malicious SSLv2 server. (CVE-2006-4343)
2748 [Tavis Ormandy and Will Drewry, Google Security Team]
2750 *) Change ciphersuite string processing so that an explicit
2751 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2752 will no longer include "AES128-SHA"), and any other similar
2753 ciphersuite (same bitmap) from *other* protocol versions (so that
2754 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2755 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2756 changes from 0.9.8b and 0.9.8d.
2759 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2761 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2762 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2764 *) Change the Unix randomness entropy gathering to use poll() when
2765 possible instead of select(), since the latter has some
2766 undesirable limitations.
2767 [Darryl Miles via Richard Levitte and Bodo Moeller]
2769 *) Disable rogue ciphersuites:
2771 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2772 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2773 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2775 The latter two were purportedly from
2776 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2779 Also deactive the remaining ciphersuites from
2780 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2781 unofficial, and the ID has long expired.
2784 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2785 dual-core machines) and other potential thread-safety issues.
2788 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2790 *) Adapt fipsld and the build system to link against the validated FIPS
2791 module in FIPS mode.
2794 *) Fixes for VC++ 2005 build under Windows.
2797 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2798 from a Windows bash shell such as MSYS. It is autodetected from the
2799 "config" script when run from a VC++ environment. Modify standard VC++
2800 build to use fipscanister.o from the GNU make build.
2803 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2805 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2806 The value now differs depending on if you build for FIPS or not.
2807 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2808 safely run with a non-FIPSed libcrypto, as it may crash because of
2809 the difference induced by this change.
2812 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2814 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2815 (part of SSL_OP_ALL). This option used to disable the
2816 countermeasure against man-in-the-middle protocol-version
2817 rollback in the SSL 2.0 server implementation, which is a bad
2818 idea. (CVE-2005-2969)
2820 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2821 for Information Security, National Institute of Advanced Industrial
2822 Science and Technology [AIST], Japan)]
2824 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2825 mainly for FIPS compliance and not fully integrated at this stage.
2828 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2829 the exponentiation using a fixed-length exponent. (Otherwise,
2830 the information leaked through timing could expose the secret key
2831 after many signatures; cf. Bleichenbacher's attack on DSA with
2835 *) Make a new fixed-window mod_exp implementation the default for
2836 RSA, DSA, and DH private-key operations so that the sequence of
2837 squares and multiplies and the memory access pattern are
2838 independent of the particular secret key. This will mitigate
2839 cache-timing and potential related attacks.
2841 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2842 and this is automatically used by BN_mod_exp_mont() if the new flag
2843 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2844 will use this BN flag for private exponents unless the flag
2845 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2846 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2848 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2850 *) Change the client implementation for SSLv23_method() and
2851 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2852 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2853 (Previously, the SSL 2.0 backwards compatible Client Hello
2854 message format would be used even with SSL_OP_NO_SSLv2.)
2857 *) Add support for smime-type MIME parameter in S/MIME messages which some
2861 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2862 a threadsafe manner. Modify rsa code to use new function and add calls
2863 to dsa and dh code (which had race conditions before).
2866 *) Include the fixed error library code in the C error file definitions
2867 instead of fixing them up at runtime. This keeps the error code
2868 structures constant.
2871 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2873 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2876 *) Fixes for newer kerberos headers. NB: the casts are needed because
2877 the 'length' field is signed on one version and unsigned on another
2878 with no (?) obvious way to tell the difference, without these VC++
2879 complains. Also the "definition" of FAR (blank) is no longer included
2880 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2881 some needed definitions.
2884 *) Undo Cygwin change.
2887 *) Added support for proxy certificates according to RFC 3820.
2888 Because they may be a security thread to unaware applications,
2889 they must be explicitely allowed in run-time. See
2890 docs/HOWTO/proxy_certificates.txt for further information.
2893 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2895 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2896 server and client random values. Previously
2897 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2898 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2900 This change has negligible security impact because:
2902 1. Server and client random values still have 24 bytes of pseudo random
2905 2. Server and client random values are sent in the clear in the initial
2908 3. The master secret is derived using the premaster secret (48 bytes in
2909 size for static RSA ciphersuites) as well as client server and random
2912 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2915 [Stephen Henson, reported by UK NISCC]
2917 *) Use Windows randomness collection on Cygwin.
2920 *) Fix hang in EGD/PRNGD query when communication socket is closed
2921 prematurely by EGD/PRNGD.
2922 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2924 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2927 *) Back-port of selected performance improvements from development
2928 branch, as well as improved support for PowerPC platforms.
2931 *) Add lots of checks for memory allocation failure, error codes to indicate
2932 failure and freeing up memory if a failure occurs.
2933 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2935 *) Add new -passin argument to dgst.
2938 *) Perform some character comparisons of different types in X509_NAME_cmp:
2939 this is needed for some certificates that reencode DNs into UTF8Strings
2940 (in violation of RFC3280) and can't or wont issue name rollover
2944 *) Make an explicit check during certificate validation to see that
2945 the CA setting in each certificate on the chain is correct. As a
2946 side effect always do the following basic checks on extensions,
2947 not just when there's an associated purpose to the check:
2949 - if there is an unhandled critical extension (unless the user
2950 has chosen to ignore this fault)
2951 - if the path length has been exceeded (if one is set at all)
2952 - that certain extensions fit the associated purpose (if one has
2956 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2958 *) Avoid a race condition when CRLs are checked in a multi threaded
2959 environment. This would happen due to the reordering of the revoked
2960 entries during signature checking and serial number lookup. Now the
2961 encoding is cached and the serial number sort performed under a lock.
2962 Add new STACK function sk_is_sorted().
2965 *) Add Delta CRL to the extension code.
2968 *) Various fixes to s3_pkt.c so alerts are sent properly.
2969 [David Holmes <d.holmes@f5.com>]
2971 *) Reduce the chances of duplicate issuer name and serial numbers (in
2972 violation of RFC3280) using the OpenSSL certificate creation utilities.
2973 This is done by creating a random 64 bit value for the initial serial
2974 number when a serial number file is created or when a self signed
2975 certificate is created using 'openssl req -x509'. The initial serial
2976 number file is created using 'openssl x509 -next_serial' in CA.pl
2977 rather than being initialized to 1.
2980 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
2982 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2983 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
2984 [Joe Orton, Steve Henson]
2986 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
2988 [Joe Orton, Steve Henson]
2990 *) Make it possible to have multiple active certificates with the same
2991 subject in the CA index file. This is done only if the keyword
2992 'unique_subject' is set to 'no' in the main CA section (default
2993 if 'CA_default') of the configuration file. The value is saved
2994 with the database itself in a separate index attribute file,
2995 named like the index file with '.attr' appended to the name.
2998 *) X509 verify fixes. Disable broken certificate workarounds when
2999 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3000 keyUsage extension present. Don't accept CRLs with unhandled critical
3001 extensions: since verify currently doesn't process CRL extensions this
3002 rejects a CRL with *any* critical extensions. Add new verify error codes
3006 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3007 A clarification of RFC2560 will require the use of OCTET STRINGs and
3008 some implementations cannot handle the current raw format. Since OpenSSL
3009 copies and compares OCSP nonces as opaque blobs without any attempt at
3010 parsing them this should not create any compatibility issues.
3013 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3014 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3015 this HMAC (and other) operations are several times slower than OpenSSL
3019 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3020 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3022 *) Use the correct content when signing type "other".
3025 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3027 *) Fix various bugs revealed by running the NISCC test suite:
3029 Stop out of bounds reads in the ASN1 code when presented with
3030 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3032 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3034 If verify callback ignores invalid public key errors don't try to check
3035 certificate signature with the NULL public key.
3039 *) New -ignore_err option in ocsp application to stop the server
3040 exiting on the first error in a request.
3043 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3044 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3048 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3049 extra data after the compression methods not only for TLS 1.0
3050 but also for SSL 3.0 (as required by the specification).
3051 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3053 *) Change X509_certificate_type() to mark the key as exported/exportable
3054 when it's 512 *bits* long, not 512 bytes.
3057 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3058 blocks during encryption.
3061 *) Various fixes to base64 BIO and non blocking I/O. On write
3062 flushes were not handled properly if the BIO retried. On read
3063 data was not being buffered properly and had various logic bugs.
3064 This also affects blocking I/O when the data being decoded is a
3068 *) Various S/MIME bugfixes and compatibility changes:
3069 output correct application/pkcs7 MIME type if
3070 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3071 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3072 of files as .eml work). Correctly handle very long lines in MIME
3076 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3078 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3079 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3080 a protocol version number mismatch like a decryption error
3081 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3084 *) Turn on RSA blinding by default in the default implementation
3085 to avoid a timing attack. Applications that don't want it can call
3086 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3087 They would be ill-advised to do so in most cases.
3088 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3090 *) Change RSA blinding code so that it works when the PRNG is not
3091 seeded (in this case, the secret RSA exponent is abused as
3092 an unpredictable seed -- if it is not unpredictable, there
3093 is no point in blinding anyway). Make RSA blinding thread-safe
3094 by remembering the creator's thread ID in rsa->blinding and
3095 having all other threads use local one-time blinding factors
3096 (this requires more computation than sharing rsa->blinding, but
3097 avoids excessive locking; and if an RSA object is not shared
3098 between threads, blinding will still be very fast).
3101 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3102 ENGINE as defaults for all supported algorithms irrespective of
3103 the 'flags' parameter. 'flags' is now honoured, so applications
3104 should make sure they are passing it correctly.
3107 *) Target "mingw" now allows native Windows code to be generated in
3108 the Cygwin environment as well as with the MinGW compiler.
3111 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3113 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3114 via timing by performing a MAC computation even if incorrrect
3115 block cipher padding has been found. This is a countermeasure
3116 against active attacks where the attacker has to distinguish
3117 between bad padding and a MAC verification error. (CVE-2003-0078)
3119 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3120 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3121 Martin Vuagnoux (EPFL, Ilion)]
3123 *) Make the no-err option work as intended. The intention with no-err
3124 is not to have the whole error stack handling routines removed from
3125 libcrypto, it's only intended to remove all the function name and
3126 reason texts, thereby removing some of the footprint that may not
3127 be interesting if those errors aren't displayed anyway.
3129 NOTE: it's still possible for any application or module to have it's
3130 own set of error texts inserted. The routines are there, just not
3131 used by default when no-err is given.
3134 *) Add support for FreeBSD on IA64.
3135 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3137 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3138 Kerberos function mit_des_cbc_cksum(). Before this change,
3139 the value returned by DES_cbc_cksum() was like the one from
3140 mit_des_cbc_cksum(), except the bytes were swapped.
3141 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3143 *) Allow an application to disable the automatic SSL chain building.
3144 Before this a rather primitive chain build was always performed in
3145 ssl3_output_cert_chain(): an application had no way to send the
3146 correct chain if the automatic operation produced an incorrect result.
3148 Now the chain builder is disabled if either:
3150 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3152 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3154 The reasoning behind this is that an application would not want the
3155 auto chain building to take place if extra chain certificates are
3156 present and it might also want a means of sending no additional
3157 certificates (for example the chain has two certificates and the
3161 *) Add the possibility to build without the ENGINE framework.
3162 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3164 *) Under Win32 gmtime() can return NULL: check return value in
3165 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3168 *) DSA routines: under certain error conditions uninitialized BN objects
3169 could be freed. Solution: make sure initialization is performed early
3170 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3171 Nils Larsch <nla@trustcenter.de> via PR#459)
3174 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3175 checked on reconnect on the client side, therefore session resumption
3176 could still fail with a "ssl session id is different" error. This
3177 behaviour is masked when SSL_OP_ALL is used due to
3178 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3179 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3180 followup to PR #377.
3183 *) IA-32 assembler support enhancements: unified ELF targets, support
3184 for SCO/Caldera platforms, fix for Cygwin shared build.
3187 *) Add support for FreeBSD on sparc64. As a consequence, support for
3188 FreeBSD on non-x86 processors is separate from x86 processors on
3189 the config script, much like the NetBSD support.
3190 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3192 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3194 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3197 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3198 code (06) was taken as the first octet of the session ID and the last
3199 octet was ignored consequently. As a result SSLv2 client side session
3200 caching could not have worked due to the session ID mismatch between
3202 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3206 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3207 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3211 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3212 seems that in spite of existing for more than a year, many application
3213 author have done nothing to provide the necessary callbacks, which
3214 means that this particular engine will not work properly anywhere.
3215 This is a very unfortunate situation which forces us, in the name
3216 of usability, to give the hw_ncipher.c a static lock, which is part
3218 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3219 appear in 0.9.8 or later. We EXPECT application authors to have
3220 dealt properly with this when 0.9.8 is released (unless we actually
3221 make such changes in the libcrypto locking code that changes will
3222 have to be made anyway).
3225 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3226 octets have been read, EOF or an error occurs. Without this change
3227 some truncated ASN1 structures will not produce an error.
3230 *) Disable Heimdal support, since it hasn't been fully implemented.
3231 Still give the possibility to force the use of Heimdal, but with
3232 warnings and a request that patches get sent to openssl-dev.
3235 *) Add the VC-CE target, introduce the WINCE sysname, and add
3236 INSTALL.WCE and appropriate conditionals to make it build.
3237 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3239 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3240 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3241 edit numbers of the version.
3242 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3244 *) Introduce safe string copy and catenation functions
3245 (BUF_strlcpy() and BUF_strlcat()).
3246 [Ben Laurie (CHATS) and Richard Levitte]
3248 *) Avoid using fixed-size buffers for one-line DNs.
3249 [Ben Laurie (CHATS)]
3251 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3252 resizing buffers containing secrets, and use where appropriate.
3253 [Ben Laurie (CHATS)]
3255 *) Avoid using fixed size buffers for configuration file location.
3256 [Ben Laurie (CHATS)]
3258 *) Avoid filename truncation for various CA files.
3259 [Ben Laurie (CHATS)]
3261 *) Use sizeof in preference to magic numbers.
3262 [Ben Laurie (CHATS)]
3264 *) Avoid filename truncation in cert requests.
3265 [Ben Laurie (CHATS)]
3267 *) Add assertions to check for (supposedly impossible) buffer
3269 [Ben Laurie (CHATS)]
3271 *) Don't cache truncated DNS entries in the local cache (this could
3272 potentially lead to a spoofing attack).
3273 [Ben Laurie (CHATS)]
3275 *) Fix various buffers to be large enough for hex/decimal
3276 representations in a platform independent manner.
3277 [Ben Laurie (CHATS)]
3279 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3280 resizing buffers containing secrets, and use where appropriate.
3281 [Ben Laurie (CHATS)]
3283 *) Add BIO_indent() to avoid much slightly worrying code to do
3285 [Ben Laurie (CHATS)]
3287 *) Convert sprintf()/BIO_puts() to BIO_printf().
3288 [Ben Laurie (CHATS)]
3290 *) buffer_gets() could terminate with the buffer only half
3292 [Ben Laurie (CHATS)]
3294 *) Add assertions to prevent user-supplied crypto functions from
3295 overflowing internal buffers by having large block sizes, etc.
3296 [Ben Laurie (CHATS)]
3298 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3300 [Ben Laurie (CHATS)]
3302 *) Eliminate unused copy of key in RC4.
3303 [Ben Laurie (CHATS)]
3305 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3306 [Ben Laurie (CHATS)]
3308 *) Fix off-by-one error in EGD path.
3309 [Ben Laurie (CHATS)]
3311 *) If RANDFILE path is too long, ignore instead of truncating.
3312 [Ben Laurie (CHATS)]
3314 *) Eliminate unused and incorrectly sized X.509 structure
3316 [Ben Laurie (CHATS)]
3318 *) Eliminate unused and dangerous function knumber().
3319 [Ben Laurie (CHATS)]
3321 *) Eliminate unused and dangerous structure, KSSL_ERR.
3322 [Ben Laurie (CHATS)]
3324 *) Protect against overlong session ID context length in an encoded
3325 session object. Since these are local, this does not appear to be
3327 [Ben Laurie (CHATS)]
3329 *) Change from security patch (see 0.9.6e below) that did not affect
3330 the 0.9.6 release series:
3332 Remote buffer overflow in SSL3 protocol - an attacker could
3333 supply an oversized master key in Kerberos-enabled versions.
3335 [Ben Laurie (CHATS)]
3337 *) Change the SSL kerb5 codes to match RFC 2712.
3340 *) Make -nameopt work fully for req and add -reqopt switch.
3341 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3343 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3344 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3346 *) Make sure tests can be performed even if the corresponding algorithms
3347 have been removed entirely. This was also the last step to make
3348 OpenSSL compilable with DJGPP under all reasonable conditions.
3349 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3351 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3352 to allow version independent disabling of normally unselected ciphers,
3353 which may be activated as a side-effect of selecting a single cipher.
3355 (E.g., cipher list string "RSA" enables ciphersuites that are left
3356 out of "ALL" because they do not provide symmetric encryption.
3357 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3358 [Lutz Jaenicke, Bodo Moeller]
3360 *) Add appropriate support for separate platform-dependent build
3361 directories. The recommended way to make a platform-dependent
3362 build directory is the following (tested on Linux), maybe with
3365 # Place yourself outside of the OpenSSL source tree. In
3366 # this example, the environment variable OPENSSL_SOURCE
3367 # is assumed to contain the absolute OpenSSL source directory.
3368 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3369 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3370 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3371 mkdir -p `dirname $F`
3372 ln -s $OPENSSL_SOURCE/$F $F
3375 To be absolutely sure not to disturb the source tree, a "make clean"
3376 is a good thing. If it isn't successfull, don't worry about it,
3377 it probably means the source directory is very clean.
3380 *) Make sure any ENGINE control commands make local copies of string
3381 pointers passed to them whenever necessary. Otherwise it is possible
3382 the caller may have overwritten (or deallocated) the original string
3383 data when a later ENGINE operation tries to use the stored values.
3384 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3386 *) Improve diagnostics in file reading and command-line digests.
3387 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3389 *) Add AES modes CFB and OFB to the object database. Correct an
3390 error in AES-CFB decryption.
3393 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3394 allows existing EVP_CIPHER_CTX structures to be reused after
3395 calling EVP_*Final(). This behaviour is used by encryption
3396 BIOs and some applications. This has the side effect that
3397 applications must explicitly clean up cipher contexts with
3398 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3401 *) Check the values of dna and dnb in bn_mul_recursive before calling
3402 bn_mul_comba (a non zero value means the a or b arrays do not contain
3403 n2 elements) and fallback to bn_mul_normal if either is not zero.
3406 *) Fix escaping of non-ASCII characters when using the -subj option
3407 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3410 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3411 form for "surname", serialNumber has no short form.
3412 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3413 therefore remove "mail" short name for "internet 7".
3414 The OID for unique identifiers in X509 certificates is
3415 x500UniqueIdentifier, not uniqueIdentifier.
3416 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3419 *) Add an "init" command to the ENGINE config module and auto initialize
3420 ENGINEs. Without any "init" command the ENGINE will be initialized
3421 after all ctrl commands have been executed on it. If init=1 the
3422 ENGINE is initailized at that point (ctrls before that point are run
3423 on the uninitialized ENGINE and after on the initialized one). If
3424 init=0 then the ENGINE will not be iniatialized at all.
3427 *) Fix the 'app_verify_callback' interface so that the user-defined
3428 argument is actually passed to the callback: In the
3429 SSL_CTX_set_cert_verify_callback() prototype, the callback
3430 declaration has been changed from
3433 int (*cb)(X509_STORE_CTX *,void *);
3434 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3435 i=s->ctx->app_verify_callback(&ctx)
3436 has been changed into
3437 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3439 To update applications using SSL_CTX_set_cert_verify_callback(),
3440 a dummy argument can be added to their callback functions.
3441 [D. K. Smetters <smetters@parc.xerox.com>]
3443 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3444 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3446 *) Add and OPENSSL_LOAD_CONF define which will cause
3447 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3448 This allows older applications to transparently support certain
3449 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3450 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3451 load the config file and OPENSSL_add_all_algorithms_conf() which will
3452 always load it have also been added.
3455 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3456 Adjust NIDs and EVP layer.
3457 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3459 *) Config modules support in openssl utility.
3461 Most commands now load modules from the config file,
3462 though in a few (such as version) this isn't done
3463 because it couldn't be used for anything.
3465 In the case of ca and req the config file used is
3466 the same as the utility itself: that is the -config
3467 command line option can be used to specify an
3471 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3472 use "openssl_conf" if filename is NULL use default openssl config file.
3475 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3476 config section name. Add a new flag to tolerate a missing config file
3477 and move code to CONF_modules_load_file().
3480 *) Support for crypto accelerator cards from Accelerated Encryption
3481 Processing, www.aep.ie. (Use engine 'aep')
3482 The support was copied from 0.9.6c [engine] and adapted/corrected
3483 to work with the new engine framework.
3484 [AEP Inc. and Richard Levitte]
3486 *) Support for SureWare crypto accelerator cards from Baltimore
3487 Technologies. (Use engine 'sureware')
3488 The support was copied from 0.9.6c [engine] and adapted
3489 to work with the new engine framework.
3492 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3493 make the newer ENGINE framework commands for the CHIL engine work.
3494 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3496 *) Make it possible to produce shared libraries on ReliantUNIX.
3497 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3499 *) Add the configuration target debug-linux-ppro.
3500 Make 'openssl rsa' use the general key loading routines
3501 implemented in apps.c, and make those routines able to
3502 handle the key format FORMAT_NETSCAPE and the variant
3504 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3506 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3507 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3509 *) Add -keyform to rsautl, and document -engine.
3510 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3512 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3513 BIO_R_NO_SUCH_FILE error code rather than the generic
3514 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3517 *) Add new functions
3519 ERR_peek_last_error_line
3520 ERR_peek_last_error_line_data.
3521 These are similar to
3524 ERR_peek_error_line_data,
3525 but report on the latest error recorded rather than the first one
3526 still in the error queue.
3527 [Ben Laurie, Bodo Moeller]
3529 *) default_algorithms option in ENGINE config module. This allows things
3531 default_algorithms = ALL
3532 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3535 *) Prelminary ENGINE config module.
3538 *) New experimental application configuration code.
3541 *) Change the AES code to follow the same name structure as all other
3542 symmetric ciphers, and behave the same way. Move everything to
3543 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3544 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3546 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3547 [Ben Laurie and Theo de Raadt]
3549 *) Add option to output public keys in req command.
3550 [Massimiliano Pala madwolf@openca.org]
3552 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3553 (up to about 10% better than before for P-192 and P-224).
3556 *) New functions/macros
3558 SSL_CTX_set_msg_callback(ctx, cb)
3559 SSL_CTX_set_msg_callback_arg(ctx, arg)
3560 SSL_set_msg_callback(ssl, cb)
3561 SSL_set_msg_callback_arg(ssl, arg)
3563 to request calling a callback function
3565 void cb(int write_p, int version, int content_type,
3566 const void *buf, size_t len, SSL *ssl, void *arg)
3568 whenever a protocol message has been completely received
3569 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3570 protocol version according to which the SSL library interprets
3571 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3572 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3573 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3574 specification (change_cipher_spec(20), alert(21), handshake(22)).
3575 'buf' and 'len' point to the actual message, 'ssl' to the
3576 SSL object, and 'arg' is the application-defined value set by
3577 SSL[_CTX]_set_msg_callback_arg().
3579 'openssl s_client' and 'openssl s_server' have new '-msg' options
3580 to enable a callback that displays all protocol messages.
3583 *) Change the shared library support so shared libraries are built as
3584 soon as the corresponding static library is finished, and thereby get
3585 openssl and the test programs linked against the shared library.
3586 This still only happens when the keyword "shard" has been given to
3587 the configuration scripts.
3589 NOTE: shared library support is still an experimental thing, and
3590 backward binary compatibility is still not guaranteed.
3591 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3593 *) Add support for Subject Information Access extension.
3594 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3596 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3597 additional bytes when new memory had to be allocated, not just
3598 when reusing an existing buffer.
3601 *) New command line and configuration option 'utf8' for the req command.
3602 This allows field values to be specified as UTF8 strings.
3605 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3606 runs for the former and machine-readable output for the latter.
3609 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3610 of the e-mail address in the DN (i.e., it will go into a certificate
3611 extension only). The new configuration file option 'email_in_dn = no'
3612 has the same effect.
3613 [Massimiliano Pala madwolf@openca.org]
3615 *) Change all functions with names starting with des_ to be starting
3616 with DES_ instead. Add wrappers that are compatible with libdes,
3617 but are named _ossl_old_des_*. Finally, add macros that map the
3618 des_* symbols to the corresponding _ossl_old_des_* if libdes
3619 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3620 desired, the des_* symbols will be mapped to DES_*, with one
3623 Since we provide two compatibility mappings, the user needs to
3624 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3625 compatibility is desired. The default (i.e., when that macro
3626 isn't defined) is OpenSSL 0.9.6c compatibility.
3628 There are also macros that enable and disable the support of old
projects / openssl.git / blob