5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
8 return internal method without any ENGINE dependencies. Add new
9 tiny fips sign and verify functions. Initial incomplete algorithm
13 *) New build option no-ec2m to disable characteristic 2 code.
16 *) New build option "fipscanisteronly". This only builds fipscanister.o
17 and (currently) associated fips utilities. Uses the file Makefile.fips
18 instead of Makefile.org as the prototype.
21 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
22 Update fips_gcmtest to use IV generator.
25 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
26 setting output buffer to NULL. The *Final function must be
27 called although it will not retrieve any additional data. The tag
28 can be set or retrieved with a ctrl. The IV length is by default 12
29 bytes (96 bits) but can be set to an alternative value. If the IV
30 length exceeds the maximum IV length (currently 16 bytes) it cannot be
34 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
35 underlying do_cipher function handles all cipher semantics itself
36 including padding and finalisation. This is useful if (for example)
37 an ENGINE cipher handles block padding itself. The behaviour of
38 do_cipher is subtly changed if this flag is set: the return value
39 is the number of characters written to the output buffer (zero is
40 no longer an error code) or a negative error code. Also if the
41 input buffer is NULL and length 0 finalisation should be performed.
44 *) If a candidate issuer certificate is already part of the constructed
45 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
48 *) Improve forward-security support: add functions
50 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
51 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
53 for use by SSL/TLS servers; the callback function will be called whenever a
54 new session is created, and gets to decide whether the session may be
55 cached to make it resumable (return 0) or not (return 1). (As by the
56 SSL/TLS protocol specifications, the session_id sent by the server will be
57 empty to indicate that the session is not resumable; also, the server will
58 not generate RFC 4507 (RFC 5077) session tickets.)
60 A simple reasonable callback implementation is to return is_forward_secure.
61 This parameter will be set to 1 or 0 depending on the ciphersuite selected
62 by the SSL/TLS server library, indicating whether it can provide forward
64 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
66 *) Add Next Protocol Negotiation,
67 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
68 disabled with a no-npn flag to config or Configure. Code donated
70 [Adam Langley <agl@google.com> and Ben Laurie]
72 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
73 all platforms. Move ssize_t definition from e_os.h to the public
74 header file e_os2.h as it now appears in public header file cms.h
77 *) New function OPENSSL_gmtime_diff to find the difference in days
78 and seconds between two tm structures. This will be used to provide
79 additional functionality for ASN1_TIME.
82 *) New -sigopt option to the ca, req and x509 utilities. Additional
83 signature parameters can be passed using this option and in
87 *) Add RSA PSS signing function. This will generate and set the
88 appropriate AlgorithmIdentifiers for PSS based on those in the
89 corresponding EVP_MD_CTX structure. No application support yet.
92 *) Support for companion algorithm specific ASN1 signing routines.
93 New function ASN1_item_sign_ctx() signs a pre-initialised
94 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
95 the appropriate parameters.
98 *) Add new algorithm specific ASN1 verification initialisation function
99 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
100 handling will be the same no matter what EVP_PKEY_METHOD is used.
101 Add a PSS handler to support verification of PSS signatures: checked
102 against a number of sample certificates.
105 *) Add signature printing for PSS. Add PSS OIDs.
106 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
108 *) Add algorithm specific signature printing. An individual ASN1 method
109 can now print out signatures instead of the standard hex dump.
111 More complex signatures (e.g. PSS) can print out more meaningful
112 information. Include DSA version that prints out the signature
116 *) Add -trusted_first option which attempts to find certificates in the
117 trusted store even if an untrusted chain is also supplied.
120 *) Initial experimental support for explicitly trusted non-root CAs.
121 OpenSSL still tries to build a complete chain to a root but if an
122 intermediate CA has a trust setting included that is used. The first
123 setting is used: whether to trust or reject.
126 *) New -verify_name option in command line utilities to set verification
130 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
131 Add CMAC pkey methods.
134 *) Experiemental regnegotiation in s_server -www mode. If the client
135 browses /reneg connection is renegotiated. If /renegcert it is
136 renegotiated requesting a certificate.
139 *) Add an "external" session cache for debugging purposes to s_server. This
140 should help trace issues which normally are only apparent in deployed
141 multi-process servers.
144 *) Experiemental password based recipient info support for CMS library:
145 implementing RFC3211.
148 *) Split password based encryption into PBES2 and PBKDF2 functions. This
149 neatly separates the code into cipher and PBE sections and is required
150 for some algorithms that split PBES2 into separate pieces (such as
154 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
155 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
156 BIO_set_cipher() and some obscure PEM functions were changed so they
157 can now return an error. The RAND changes required a change to the
158 RAND_METHOD structure.
161 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
162 a gcc attribute to warn if the result of a function is ignored. This
163 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
164 whose return value is often ignored.
167 Changes between 1.0.0d and 1.0.1 [xx XXX xxxx]
169 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
172 *) Add EC_GFp_nistp224_method(), a 64-bit optimized implementation for
173 elliptic curve NIST-P224 with constant-time single point multiplication on
174 typical inputs. EC_GROUP_new_by_curve_name() will automatically use this
175 (while EC_GROUP_new_curve_GFp() currently won't and prefers the more
176 flexible implementations).
178 The implementation requires support for the nonstandard type __uint128_t,
179 and so is disabled by default. To include this in your build of OpenSSL,
180 use -DEC_NISTP224_64_GCC_128 on the Configure (or config) command line,
181 and run "make depend" (or "make update").
182 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
184 *) Permit abbreviated handshakes when renegotiating using the function
185 SSL_renegotiate_abbreviated().
186 [Robin Seggelmann <seggelmann@fh-muenster.de>]
188 *) Add call to ENGINE_register_all_complete() to
189 ENGINE_load_builtin_engines(), so some implementations get used
190 automatically instead of needing explicit application support.
193 *) Add support for TLS key exporter as described in RFC5705.
194 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
196 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
197 a few changes are required:
199 Add SSL_OP_NO_TLSv1_1 flag.
201 Update version checking logic to handle version 1.1.
202 Add explicit IV handling (ported from DTLS code).
203 Add command line options to s_client/s_server.
206 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
208 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
209 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
211 *) Fix bug in string printing code: if *any* escaping is enabled we must
212 escape the escape character (backslash) or the resulting string is
216 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
218 *) Disable code workaround for ancient and obsolete Netscape browsers
219 and servers: an attacker can use it in a ciphersuite downgrade attack.
220 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
223 *) Fixed J-PAKE implementation error, originally discovered by
224 Sebastien Martini, further info and confirmation from Stefan
225 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
228 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
230 *) Fix extension code to avoid race conditions which can result in a buffer
231 overrun vulnerability: resumed sessions must not be modified as they can
232 be shared by multiple threads. CVE-2010-3864
235 *) Fix WIN32 build system to correctly link an ENGINE directory into
239 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
241 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
243 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
245 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
247 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
248 context. The operation can be customised via the ctrl mechanism in
249 case ENGINEs want to include additional functionality.
252 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
255 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
256 output hashes compatible with older versions of OpenSSL.
257 [Willy Weisz <weisz@vcpc.univie.ac.at>]
259 *) Fix compression algorithm handling: if resuming a session use the
260 compression algorithm of the resumed session instead of determining
261 it from client hello again. Don't allow server to change algorithm.
264 *) Add load_crls() function to apps tidying load_certs() too. Add option
265 to verify utility to allow additional CRLs to be included.
268 *) Update OCSP request code to permit adding custom headers to the request:
269 some responders need this.
272 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
274 [Julia Lawall <julia@diku.dk>]
276 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
277 needlessly dereferenced structures, used obsolete functions and
278 didn't handle all updated verify codes correctly.
281 *) Disable MD2 in the default configuration.
284 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
285 indicate the initial BIO being pushed or popped. This makes it possible
286 to determine whether the BIO is the one explicitly called or as a result
287 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
288 it handles reference counts correctly and doesn't zero out the I/O bio
289 when it is not being explicitly popped. WARNING: applications which
290 included workarounds for the old buggy behaviour will need to be modified
291 or they could free up already freed BIOs.
294 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
295 renaming to all platforms (within the 0.9.8 branch, this was
296 done conditionally on Netware platforms to avoid a name clash).
297 [Guenter <lists@gknw.net>]
299 *) Add ECDHE and PSK support to DTLS.
300 [Michael Tuexen <tuexen@fh-muenster.de>]
302 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
306 *) Add "missing" function EVP_MD_flags() (without this the only way to
307 retrieve a digest flags is by accessing the structure directly. Update
308 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
309 or cipher is registered as in the "from" argument. Print out all
310 registered digests in the dgst usage message instead of manually
311 attempting to work them out.
314 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
315 this allows the use of compression and extensions. Change default cipher
316 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
317 by default unless an application cipher string requests it.
320 *) Alter match criteria in PKCS12_parse(). It used to try to use local
321 key ids to find matching certificates and keys but some PKCS#12 files
322 don't follow the (somewhat unwritten) rules and this strategy fails.
323 Now just gather all certificates together and the first private key
324 then look for the first certificate that matches the key.
327 *) Support use of registered digest and cipher names for dgst and cipher
328 commands instead of having to add each one as a special case. So now
335 openssl dgst -sha256 foo
337 and this works for ENGINE based algorithms too.
341 *) Update Gost ENGINE to support parameter files.
342 [Victor B. Wagner <vitus@cryptocom.ru>]
344 *) Support GeneralizedTime in ca utility.
345 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
347 *) Enhance the hash format used for certificate directory links. The new
348 form uses the canonical encoding (meaning equivalent names will work
349 even if they aren't identical) and uses SHA1 instead of MD5. This form
350 is incompatible with the older format and as a result c_rehash should
351 be used to rebuild symbolic links.
354 *) Make PKCS#8 the default write format for private keys, replacing the
355 traditional format. This form is standardised, more secure and doesn't
356 include an implicit MD5 dependency.
359 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
360 committed to OpenSSL should pass this lot as a minimum.
363 *) Add session ticket override functionality for use by EAP-FAST.
364 [Jouni Malinen <j@w1.fi>]
366 *) Modify HMAC functions to return a value. Since these can be implemented
367 in an ENGINE errors can occur.
370 *) Type-checked OBJ_bsearch_ex.
373 *) Type-checked OBJ_bsearch. Also some constification necessitated
374 by type-checking. Still to come: TXT_DB, bsearch(?),
375 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
379 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
380 seconds to a tm structure directly, instead of going through OS
381 specific date routines. This avoids any issues with OS routines such
382 as the year 2038 bug. New *_adj() functions for ASN1 time structures
383 and X509_time_adj_ex() to cover the extended range. The existing
384 X509_time_adj() is still usable and will no longer have any date issues.
387 *) Delta CRL support. New use deltas option which will attempt to locate
388 and search any appropriate delta CRLs available.
390 This work was sponsored by Google.
393 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
394 code and add additional score elements. Validate alternate CRL paths
395 as part of the CRL checking and indicate a new error "CRL path validation
396 error" in this case. Applications wanting additional details can use
397 the verify callback and check the new "parent" field. If this is not
398 NULL CRL path validation is taking place. Existing applications wont
399 see this because it requires extended CRL support which is off by
402 This work was sponsored by Google.
405 *) Support for freshest CRL extension.
407 This work was sponsored by Google.
410 *) Initial indirect CRL support. Currently only supported in the CRLs
411 passed directly and not via lookup. Process certificate issuer
412 CRL entry extension and lookup CRL entries by bother issuer name
413 and serial number. Check and process CRL issuer entry in IDP extension.
415 This work was sponsored by Google.
418 *) Add support for distinct certificate and CRL paths. The CRL issuer
419 certificate is validated separately in this case. Only enabled if
420 an extended CRL support flag is set: this flag will enable additional
421 CRL functionality in future.
423 This work was sponsored by Google.
426 *) Add support for policy mappings extension.
428 This work was sponsored by Google.
431 *) Fixes to pathlength constraint, self issued certificate handling,
432 policy processing to align with RFC3280 and PKITS tests.
434 This work was sponsored by Google.
437 *) Support for name constraints certificate extension. DN, email, DNS
438 and URI types are currently supported.
440 This work was sponsored by Google.
443 *) To cater for systems that provide a pointer-based thread ID rather
444 than numeric, deprecate the current numeric thread ID mechanism and
445 replace it with a structure and associated callback type. This
446 mechanism allows a numeric "hash" to be extracted from a thread ID in
447 either case, and on platforms where pointers are larger than 'long',
448 mixing is done to help ensure the numeric 'hash' is usable even if it
449 can't be guaranteed unique. The default mechanism is to use "&errno"
450 as a pointer-based thread ID to distinguish between threads.
452 Applications that want to provide their own thread IDs should now use
453 CRYPTO_THREADID_set_callback() to register a callback that will call
454 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
456 Note that ERR_remove_state() is now deprecated, because it is tied
457 to the assumption that thread IDs are numeric. ERR_remove_state(0)
458 to free the current thread's error state should be replaced by
459 ERR_remove_thread_state(NULL).
461 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
462 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
463 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
464 application was previously providing a numeric thread callback that
465 was inappropriate for distinguishing threads, then uniqueness might
466 have been obtained with &errno that happened immediately in the
467 intermediate development versions of OpenSSL; this is no longer the
468 case, the numeric thread callback will now override the automatic use
470 [Geoff Thorpe, with help from Bodo Moeller]
472 *) Initial support for different CRL issuing certificates. This covers a
473 simple case where the self issued certificates in the chain exist and
474 the real CRL issuer is higher in the existing chain.
476 This work was sponsored by Google.
479 *) Removed effectively defunct crypto/store from the build.
482 *) Revamp of STACK to provide stronger type-checking. Still to come:
483 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
484 ASN1_STRING, CONF_VALUE.
487 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
488 RAM on SSL connections. This option can save about 34k per idle SSL.
491 *) Revamp of LHASH to provide stronger type-checking. Still to come:
492 STACK, TXT_DB, bsearch, qsort.
495 *) Initial support for Cryptographic Message Syntax (aka CMS) based
496 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
497 support for data, signedData, compressedData, digestedData and
498 encryptedData, envelopedData types included. Scripts to check against
499 RFC4134 examples draft and interop and consistency checks of many
500 content types and variants.
503 *) Add options to enc utility to support use of zlib compression BIO.
506 *) Extend mk1mf to support importing of options and assembly language
507 files from Configure script, currently only included in VC-WIN32.
508 The assembly language rules can now optionally generate the source
509 files from the associated perl scripts.
512 *) Implement remaining functionality needed to support GOST ciphersuites.
513 Interop testing has been performed using CryptoPro implementations.
514 [Victor B. Wagner <vitus@cryptocom.ru>]
516 *) s390x assembler pack.
519 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
523 *) Implement Opaque PRF Input TLS extension as specified in
524 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
525 official specification yet and no extension type assignment by
526 IANA exists, this extension (for now) will have to be explicitly
527 enabled when building OpenSSL by providing the extension number
528 to use. For example, specify an option
530 -DTLSEXT_TYPE_opaque_prf_input=0x9527
532 to the "config" or "Configure" script to enable the extension,
533 assuming extension number 0x9527 (which is a completely arbitrary
534 and unofficial assignment based on the MD5 hash of the Internet
535 Draft). Note that by doing so, you potentially lose
536 interoperability with other TLS implementations since these might
537 be using the same extension number for other purposes.
539 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
540 opaque PRF input value to use in the handshake. This will create
541 an interal copy of the length-'len' string at 'src', and will
542 return non-zero for success.
544 To get more control and flexibility, provide a callback function
547 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
548 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
552 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
555 Callback function 'cb' will be called in handshakes, and is
556 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
557 Argument 'arg' is for application purposes (the value as given to
558 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
559 be provided to the callback function). The callback function
560 has to return non-zero to report success: usually 1 to use opaque
561 PRF input just if possible, or 2 to enforce use of the opaque PRF
562 input. In the latter case, the library will abort the handshake
563 if opaque PRF input is not successfully negotiated.
565 Arguments 'peerinput' and 'len' given to the callback function
566 will always be NULL and 0 in the case of a client. A server will
567 see the client's opaque PRF input through these variables if
568 available (NULL and 0 otherwise). Note that if the server
569 provides an opaque PRF input, the length must be the same as the
570 length of the client's opaque PRF input.
572 Note that the callback function will only be called when creating
573 a new session (session resumption can resume whatever was
574 previously negotiated), and will not be called in SSL 2.0
575 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
576 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
577 for applications that need to enforce opaque PRF input.
581 *) Update ssl code to support digests other than SHA1+MD5 for handshake
584 [Victor B. Wagner <vitus@cryptocom.ru>]
586 *) Add RFC4507 support to OpenSSL. This includes the corrections in
587 RFC4507bis. The encrypted ticket format is an encrypted encoded
588 SSL_SESSION structure, that way new session features are automatically
591 If a client application caches session in an SSL_SESSION structure
592 support is transparent because tickets are now stored in the encoded
595 The SSL_CTX structure automatically generates keys for ticket
596 protection in servers so again support should be possible
597 with no application modification.
599 If a client or server wishes to disable RFC4507 support then the option
600 SSL_OP_NO_TICKET can be set.
602 Add a TLS extension debugging callback to allow the contents of any client
603 or server extensions to be examined.
605 This work was sponsored by Google.
608 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
609 OpenSSL should now compile cleanly on gcc 4.2
610 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
612 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
613 support including streaming MAC support: this is required for GOST
615 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
617 *) Add option -stream to use PKCS#7 streaming in smime utility. New
618 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
619 to output in BER and PEM format.
622 *) Experimental support for use of HMAC via EVP_PKEY interface. This
623 allows HMAC to be handled via the EVP_DigestSign*() interface. The
624 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
625 ENGINE support for HMAC keys which are unextractable. New -mac and
626 -macopt options to dgst utility.
629 *) New option -sigopt to dgst utility. Update dgst to use
630 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
631 alternative signing paramaters such as X9.31 or PSS in the dgst
635 *) Change ssl_cipher_apply_rule(), the internal function that does
636 the work each time a ciphersuite string requests enabling
637 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
638 removing ("!foo+bar") a class of ciphersuites: Now it maintains
639 the order of disabled ciphersuites such that those ciphersuites
640 that most recently went from enabled to disabled not only stay
641 in order with respect to each other, but also have higher priority
642 than other disabled ciphersuites the next time ciphersuites are
645 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
646 the same ciphersuites as with "HIGH" alone, but in a specific
647 order where the PSK ciphersuites come first (since they are the
648 most recently disabled ciphersuites when "HIGH" is parsed).
650 Also, change ssl_create_cipher_list() (using this new
651 funcionality) such that between otherwise identical
652 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
656 *) Change ssl_create_cipher_list() so that it automatically
657 arranges the ciphersuites in reasonable order before starting
658 to process the rule string. Thus, the definition for "DEFAULT"
659 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
660 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
661 This makes it much easier to arrive at a reasonable default order
662 in applications for which anonymous ciphers are OK (meaning
663 that you can't actually use DEFAULT).
664 [Bodo Moeller; suggested by Victor Duchovni]
666 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
667 processing) into multiple integers instead of setting
668 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
669 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
670 (These masks as well as the individual bit definitions are hidden
671 away into the non-exported interface ssl/ssl_locl.h, so this
672 change to the definition of the SSL_CIPHER structure shouldn't
673 affect applications.) This give us more bits for each of these
674 categories, so there is no longer a need to coagulate AES128 and
675 AES256 into a single algorithm bit, and to coagulate Camellia128
676 and Camellia256 into a single algorithm bit, which has led to all
679 Thus, among other things, the kludge introduced in 0.9.7m and
680 0.9.8e for masking out AES256 independently of AES128 or masking
681 out Camellia256 independently of AES256 is not needed here in 0.9.9.
683 With the change, we also introduce new ciphersuite aliases that
684 so far were missing: "AES128", "AES256", "CAMELLIA128", and
688 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
689 Use the leftmost N bytes of the signature input if the input is
690 larger than the prime q (with N being the size in bytes of q).
693 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
694 it yet and it is largely untested.
697 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
700 *) Initial incomplete changes to avoid need for function casts in OpenSSL
701 some compilers (gcc 4.2 and later) reject their use. Safestack is
702 reimplemented. Update ASN1 to avoid use of legacy functions.
705 *) Win32/64 targets are linked with Winsock2.
708 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
709 to external functions. This can be used to increase CRL handling
710 efficiency especially when CRLs are very large by (for example) storing
711 the CRL revoked certificates in a database.
714 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
715 new CRLs added to a directory can be used. New command line option
716 -verify_return_error to s_client and s_server. This causes real errors
717 to be returned by the verify callback instead of carrying on no matter
718 what. This reflects the way a "real world" verify callback would behave.
721 *) GOST engine, supporting several GOST algorithms and public key formats.
722 Kindly donated by Cryptocom.
725 *) Partial support for Issuing Distribution Point CRL extension. CRLs
726 partitioned by DP are handled but no indirect CRL or reason partitioning
727 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
728 selected via a scoring technique which handles IDP and AKID in CRLs.
731 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
732 will ultimately be used for all verify operations: this will remove the
733 X509_STORE dependency on certificate verification and allow alternative
734 lookup methods. X509_STORE based implementations of these two callbacks.
737 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
738 Modify get_crl() to find a valid (unexpired) CRL if possible.
741 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
742 this would be called X509_CRL_cmp() but that name is already used by
743 a function that just compares CRL issuer names. Cache several CRL
744 extensions in X509_CRL structure and cache CRLDP in X509.
747 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
748 this maps equivalent X509_NAME structures into a consistent structure.
749 Name comparison can then be performed rapidly using memcmp().
752 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
756 *) Allow digests to supply their own micalg string for S/MIME type using
757 the ctrl EVP_MD_CTRL_MICALG.
760 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
761 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
762 ctrl. It can then customise the structure before and/or after signing
766 *) New function OBJ_add_sigid() to allow application defined signature OIDs
767 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
768 to free up any added signature OIDs.
771 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
772 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
773 digest and cipher tables. New options added to openssl utility:
774 list-message-digest-algorithms and list-cipher-algorithms.
777 *) Change the array representation of binary polynomials: the list
778 of degrees of non-zero coefficients is now terminated with -1.
779 Previously it was terminated with 0, which was also part of the
780 value; thus, the array representation was not applicable to
781 polynomials where t^0 has coefficient zero. This change makes
782 the array representation useful in a more general context.
785 *) Various modifications and fixes to SSL/TLS cipher string
786 handling. For ECC, the code now distinguishes between fixed ECDH
787 with RSA certificates on the one hand and with ECDSA certificates
788 on the other hand, since these are separate ciphersuites. The
789 unused code for Fortezza ciphersuites has been removed.
791 For consistency with EDH, ephemeral ECDH is now called "EECDH"
792 (not "ECDHE"). For consistency with the code for DH
793 certificates, use of ECDH certificates is now considered ECDH
794 authentication, not RSA or ECDSA authentication (the latter is
795 merely the CA's signing algorithm and not actively used in the
798 The temporary ciphersuite alias "ECCdraft" is no longer
799 available, and ECC ciphersuites are no longer excluded from "ALL"
800 and "DEFAULT". The following aliases now exist for RFC 4492
801 ciphersuites, most of these by analogy with the DH case:
803 kECDHr - ECDH cert, signed with RSA
804 kECDHe - ECDH cert, signed with ECDSA
805 kECDH - ECDH cert (signed with either RSA or ECDSA)
806 kEECDH - ephemeral ECDH
807 ECDH - ECDH cert or ephemeral ECDH
813 AECDH - anonymous ECDH
814 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
818 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
819 Use correct micalg parameters depending on digest(s) in signed message.
822 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
823 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
826 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
827 an engine to register a method. Add ENGINE lookups for methods and
828 functional reference processing.
831 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
832 EVP_{Sign,Verify}* which allow an application to customise the signature
836 *) New -resign option to smime utility. This adds one or more signers
837 to an existing PKCS#7 signedData structure. Also -md option to use an
838 alternative message digest algorithm for signing.
841 *) Tidy up PKCS#7 routines and add new functions to make it easier to
842 create PKCS7 structures containing multiple signers. Update smime
843 application to support multiple signers.
846 *) New -macalg option to pkcs12 utility to allow setting of an alternative
850 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
851 Reorganize PBE internals to lookup from a static table using NIDs,
852 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
853 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
854 PRF which will be automatically used with PBES2.
857 *) Replace the algorithm specific calls to generate keys in "req" with the
861 *) Update PKCS#7 enveloped data routines to use new API. This is now
862 supported by any public key method supporting the encrypt operation. A
863 ctrl is added to allow the public key algorithm to examine or modify
864 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
868 *) Add a ctrl to asn1 method to allow a public key algorithm to express
869 a default digest type to use. In most cases this will be SHA1 but some
870 algorithms (such as GOST) need to specify an alternative digest. The
871 return value indicates how strong the prefernce is 1 means optional and
872 2 is mandatory (that is it is the only supported type). Modify
873 ASN1_item_sign() to accept a NULL digest argument to indicate it should
874 use the default md. Update openssl utilities to use the default digest
875 type for signing if it is not explicitly indicated.
878 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
879 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
880 signing method from the key type. This effectively removes the link
881 between digests and public key types.
884 *) Add an OID cross reference table and utility functions. Its purpose is to
885 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
886 rsaEncryption. This will allow some of the algorithm specific hackery
887 needed to use the correct OID to be removed.
890 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
891 structures for PKCS7_sign(). They are now set up by the relevant public
895 *) Add provisional EC pkey method with support for ECDSA and ECDH.
898 *) Add support for key derivation (agreement) in the API, DH method and
902 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
903 public and private key formats. As a side effect these add additional
904 command line functionality not previously available: DSA signatures can be
905 generated and verified using pkeyutl and DH key support and generation in
910 [Oliver Tappe <zooey@hirschkaefer.de>]
912 *) New make target "install_html_docs" installs HTML renditions of the
914 [Oliver Tappe <zooey@hirschkaefer.de>]
916 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
917 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
918 support key and parameter generation and add initial key generation
919 functionality for RSA.
922 *) Add functions for main EVP_PKEY_method operations. The undocumented
923 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
924 EVP_PKEY_{encrypt,decrypt}_old.
927 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
928 key API, doesn't do much yet.
931 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
932 public key algorithms. New option to openssl utility:
933 "list-public-key-algorithms" to print out info.
936 *) Implement the Supported Elliptic Curves Extension for
937 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
940 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
941 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
944 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
945 utilities such as rsa, dsa, dsaparam etc except they process any key
949 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
950 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
951 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
955 *) Initial support for pluggable public key ASN1.
956 De-spaghettify the public key ASN1 handling. Move public and private
957 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
958 algorithm specific handling to a single module within the relevant
959 algorithm directory. Add functions to allow (near) opaque processing
960 of public and private key structures.
963 *) Implement the Supported Point Formats Extension for
964 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
967 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
968 for the psk identity [hint] and the psk callback functions to the
969 SSL_SESSION, SSL and SSL_CTX structure.
972 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
976 SSL_CTX_use_psk_identity_hint
977 SSL_get_psk_identity_hint
979 SSL_use_psk_identity_hint
981 [Mika Kousa and Pasi Eronen of Nokia Corporation]
983 *) Add RFC 3161 compliant time stamp request creation, response generation
984 and response verification functionality.
985 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
987 *) Add initial support for TLS extensions, specifically for the server_name
988 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
989 have new members for a host name. The SSL data structure has an
990 additional member SSL_CTX *initial_ctx so that new sessions can be
991 stored in that context to allow for session resumption, even after the
992 SSL has been switched to a new SSL_CTX in reaction to a client's
993 server_name extension.
995 New functions (subject to change):
998 SSL_get_servername_type()
1001 New CTRL codes and macros (subject to change):
1003 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1004 - SSL_CTX_set_tlsext_servername_callback()
1005 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1006 - SSL_CTX_set_tlsext_servername_arg()
1007 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1009 openssl s_client has a new '-servername ...' option.
1011 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1012 '-key2 ...', '-servername_fatal' (subject to change). This allows
1013 testing the HostName extension for a specific single host name ('-cert'
1014 and '-key' remain fallbacks for handshakes without HostName
1015 negotiation). If the unrecogninzed_name alert has to be sent, this by
1016 default is a warning; it becomes fatal with the '-servername_fatal'
1019 [Peter Sylvester, Remy Allais, Christophe Renou]
1021 *) Whirlpool hash implementation is added.
1024 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1025 bn(64,32). Because of instruction set limitations it doesn't have
1026 any negative impact on performance. This was done mostly in order
1027 to make it possible to share assembler modules, such as bn_mul_mont
1028 implementations, between 32- and 64-bit builds without hassle.
1031 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1032 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1036 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1037 dedicated Montgomery multiplication procedure, is introduced.
1038 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1039 "64-bit" performance on certain 32-bit targets.
1042 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1043 in SSL structures. New SSL ctrl to set maximum send fragment size.
1044 Save memory by seeting the I/O buffer sizes dynamically instead of
1045 using the maximum available value.
1048 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1049 in addition to the text details.
1052 *) Very, very preliminary EXPERIMENTAL support for printing of general
1053 ASN1 structures. This currently produces rather ugly output and doesn't
1054 handle several customised structures at all.
1057 *) Integrated support for PVK file format and some related formats such
1058 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1059 these in the 'rsa' and 'dsa' utilities.
1062 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1065 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1066 place for the (very old) "NETSCAPE" format certificates which are now
1067 handled using new ASN1 code equivalents.
1070 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1071 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1072 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1075 *) Modify CRL distribution points extension code to print out previously
1076 unsupported fields. Enhance extension setting code to allow setting of
1080 *) Add print and set support for Issuing Distribution Point CRL extension.
1083 *) Change 'Configure' script to enable Camellia by default.
1086 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1088 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1089 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1091 *) Fix bug in string printing code: if *any* escaping is enabled we must
1092 escape the escape character (backslash) or the resulting string is
1096 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1098 *) Disable code workaround for ancient and obsolete Netscape browsers
1099 and servers: an attacker can use it in a ciphersuite downgrade attack.
1100 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1103 *) Fixed J-PAKE implementation error, originally discovered by
1104 Sebastien Martini, further info and confirmation from Stefan
1105 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1108 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1110 *) Fix extension code to avoid race conditions which can result in a buffer
1111 overrun vulnerability: resumed sessions must not be modified as they can
1112 be shared by multiple threads. CVE-2010-3864
1115 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1118 *) Don't reencode certificate when calculating signature: cache and use
1119 the original encoding instead. This makes signature verification of
1120 some broken encodings work correctly.
1123 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1124 is also one of the inputs.
1125 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1127 *) Don't repeatedly append PBE algorithms to table if they already exist.
1128 Sort table on each new add. This effectively makes the table read only
1129 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1133 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1135 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1138 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1139 access or freeing data twice (CVE-2010-0742)
1140 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1142 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1143 common in certificates and some applications which only call
1144 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1148 Reduce copying into .apps and .test in makevms.com
1149 Don't try to use blank CA certificate in CA.com
1150 Allow use of C files from original directories in maketests.com
1151 [Steven M. Schweda" <sms@antinode.info>]
1153 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1155 *) When rejecting SSL/TLS records due to an incorrect version number, never
1156 update s->server with a new major version number. As of
1157 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1158 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1159 the previous behavior could result in a read attempt at NULL when
1160 receiving specific incorrect SSL/TLS records once record payload
1161 protection is active. (CVE-2010-0740)
1162 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1164 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1165 could be crashed if the relevant tables were not present (e.g. chrooted).
1166 [Tomas Hoger <thoger@redhat.com>]
1168 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1170 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1171 [Martin Olsson, Neel Mehta]
1173 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1174 accommodate for stack sorting, always a write lock!).
1177 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1178 excessive delays in the RAND_poll(): over a minute. As a workaround
1179 include a time check in the inner Heap32Next loop too.
1182 *) The code that handled flushing of data in SSL/TLS originally used the
1183 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1184 the problem outlined in PR#1949. The fix suggested there however can
1185 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1186 of Apache). So instead simplify the code to flush unconditionally.
1187 This should be fine since flushing with no data to flush is a no op.
1190 *) Handle TLS versions 2.0 and later properly and correctly use the
1191 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1192 off ancient servers have a habit of sticking around for a while...
1195 *) Modify compression code so it frees up structures without using the
1196 ex_data callbacks. This works around a problem where some applications
1197 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1198 restarting) then use compression (e.g. SSL with compression) later.
1199 This results in significant per-connection memory leaks and
1200 has caused some security issues including CVE-2008-1678 and
1204 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1205 change when encrypting or decrypting.
1208 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1209 connect and renegotiate with servers which do not support RI.
1210 Until RI is more widely deployed this option is enabled by default.
1213 *) Add "missing" ssl ctrls to clear options and mode.
1216 *) If client attempts to renegotiate and doesn't support RI respond with
1217 a no_renegotiation alert as required by RFC5746. Some renegotiating
1218 TLS clients will continue a connection gracefully when they receive
1219 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1220 waiting for a server hello which it will never receive. Now we treat a
1221 received no_renegotiation alert as a fatal error. This is because
1222 applications requesting a renegotiation might well expect it to succeed
1223 and would have no code in place to handle the server denying it so the
1224 only safe thing to do is to terminate the connection.
1227 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1228 peer supports secure renegotiation and 0 otherwise. Print out peer
1229 renegotiation support in s_client/s_server.
1232 *) Replace the highly broken and deprecated SPKAC certification method with
1233 the updated NID creation version. This should correctly handle UTF8.
1236 *) Implement RFC5746. Re-enable renegotiation but require the extension
1237 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1238 turns out to be a bad idea. It has been replaced by
1239 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1240 SSL_CTX_set_options(). This is really not recommended unless you
1241 know what you are doing.
1242 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1244 *) Fixes to stateless session resumption handling. Use initial_ctx when
1245 issuing and attempting to decrypt tickets in case it has changed during
1246 servername handling. Use a non-zero length session ID when attempting
1247 stateless session resumption: this makes it possible to determine if
1248 a resumption has occurred immediately after receiving server hello
1249 (several places in OpenSSL subtly assume this) instead of later in
1253 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1254 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1255 fixes for a few places where the return code is not checked
1257 [Julia Lawall <julia@diku.dk>]
1259 *) Add --strict-warnings option to Configure script to include devteam
1260 warnings in other configurations.
1263 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1264 makes it possible to install openssl libraries in locations which
1265 have names other than "lib", for example "/usr/lib64" which some
1267 [Steve Henson, based on patch from Jeremy Utley]
1269 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1270 X690 8.9.12 and can produce some misleading textual output of OIDs.
1271 [Steve Henson, reported by Dan Kaminsky]
1273 *) Delete MD2 from algorithm tables. This follows the recommendation in
1274 several standards that it is not used in new applications due to
1275 several cryptographic weaknesses. For binary compatibility reasons
1276 the MD2 API is still compiled in by default.
1279 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1283 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1284 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1286 [Guenter <lists@gknw.net>]
1288 *) Fix the server certificate chain building code to use X509_verify_cert(),
1289 it used to have an ad-hoc builder which was unable to cope with anything
1290 other than a simple chain.
1291 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1293 *) Don't check self signed certificate signatures in X509_verify_cert()
1294 by default (a flag can override this): it just wastes time without
1295 adding any security. As a useful side effect self signed root CAs
1296 with non-FIPS digests are now usable in FIPS mode.
1299 *) In dtls1_process_out_of_seq_message() the check if the current message
1300 is already buffered was missing. For every new message was memory
1301 allocated, allowing an attacker to perform an denial of service attack
1302 with sending out of seq handshake messages until there is no memory
1303 left. Additionally every future messege was buffered, even if the
1304 sequence number made no sense and would be part of another handshake.
1305 So only messages with sequence numbers less than 10 in advance will be
1306 buffered. (CVE-2009-1378)
1307 [Robin Seggelmann, discovered by Daniel Mentz]
1309 *) Records are buffered if they arrive with a future epoch to be
1310 processed after finishing the corresponding handshake. There is
1311 currently no limitation to this buffer allowing an attacker to perform
1312 a DOS attack with sending records with future epochs until there is no
1313 memory left. This patch adds the pqueue_size() function to detemine
1314 the size of a buffer and limits the record buffer to 100 entries.
1316 [Robin Seggelmann, discovered by Daniel Mentz]
1318 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1319 parent structure is freed. (CVE-2009-1379)
1322 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1323 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1326 [Ilya O. <vrghost@gmail.com>]
1328 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1330 *) Disable renegotiation completely - this fixes a severe security
1331 problem (CVE-2009-3555) at the cost of breaking all
1332 renegotiation. Renegotiation can be re-enabled by setting
1333 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1334 run-time. This is really not recommended unless you know what
1338 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1340 *) Don't set val to NULL when freeing up structures, it is freed up by
1341 underlying code. If sizeof(void *) > sizeof(long) this can result in
1342 zeroing past the valid field. (CVE-2009-0789)
1343 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1345 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1346 checked correctly. This would allow some invalid signed attributes to
1347 appear to verify correctly. (CVE-2009-0591)
1348 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1350 *) Reject UniversalString and BMPString types with invalid lengths. This
1351 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1352 a legal length. (CVE-2009-0590)
1355 *) Set S/MIME signing as the default purpose rather than setting it
1356 unconditionally. This allows applications to override it at the store
1360 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1361 to handle some structures.
1364 *) Improve efficiency of mem_gets: don't search whole buffer each time
1366 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1368 *) New -hex option for openssl rand.
1371 *) Print out UTF8String and NumericString when parsing ASN1.
1374 *) Support NumericString type for name components.
1377 *) Allow CC in the environment to override the automatically chosen
1378 compiler. Note that nothing is done to ensure flags work with the
1382 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1384 *) Properly check EVP_VerifyFinal() and similar return values
1386 [Ben Laurie, Bodo Moeller, Google Security Team]
1388 *) Enable TLS extensions by default.
1391 *) Allow the CHIL engine to be loaded, whether the application is
1392 multithreaded or not. (This does not release the developer from the
1393 obligation to set up the dynamic locking callbacks.)
1394 [Sander Temme <sander@temme.net>]
1396 *) Use correct exit code if there is an error in dgst command.
1397 [Steve Henson; problem pointed out by Roland Dirlewanger]
1399 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1400 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1403 *) Add experimental JPAKE support, including demo authentication in
1404 s_client and s_server.
1407 *) Set the comparison function in v3_addr_canonize().
1408 [Rob Austein <sra@hactrn.net>]
1410 *) Add support for XMPP STARTTLS in s_client.
1411 [Philip Paeps <philip@freebsd.org>]
1413 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1414 to ensure that even with this option, only ciphersuites in the
1415 server's preference list will be accepted. (Note that the option
1416 applies only when resuming a session, so the earlier behavior was
1417 just about the algorithm choice for symmetric cryptography.)
1420 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1422 *) Fix NULL pointer dereference if a DTLS server received
1423 ChangeCipherSpec as first record (CVE-2009-1386).
1426 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1427 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1430 *) The fix in 0.9.8c that supposedly got rid of unsafe
1431 double-checked locking was incomplete for RSA blinding,
1432 addressing just one layer of what turns out to have been
1433 doubly unsafe triple-checked locking.
1435 So now fix this for real by retiring the MONT_HELPER macro
1436 in crypto/rsa/rsa_eay.c.
1438 [Bodo Moeller; problem pointed out by Marius Schilder]
1440 *) Various precautionary measures:
1442 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1444 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1445 (NB: This would require knowledge of the secret session ticket key
1446 to exploit, in which case you'd be SOL either way.)
1448 - Change bn_nist.c so that it will properly handle input BIGNUMs
1449 outside the expected range.
1451 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1454 [Neel Mehta, Bodo Moeller]
1456 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1457 the load fails. Useful for distros.
1458 [Ben Laurie and the FreeBSD team]
1460 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1463 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1466 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1468 This work was sponsored by Logica.
1471 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1472 keystores. Support for SSL/TLS client authentication too.
1473 Not compiled unless enable-capieng specified to Configure.
1475 This work was sponsored by Logica.
1478 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1479 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1480 attribute creation routines such as certifcate requests and PKCS#12
1484 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1486 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1487 handshake which could lead to a cilent crash as found using the
1488 Codenomicon TLS test suite (CVE-2008-1672)
1489 [Steve Henson, Mark Cox]
1491 *) Fix double free in TLS server name extensions which could lead to
1492 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1495 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1497 Clear the error queue to ensure that error entries left from
1498 older function calls do not interfere with the correct operation.
1499 [Lutz Jaenicke, Erik de Castro Lopo]
1501 *) Remove root CA certificates of commercial CAs:
1503 The OpenSSL project does not recommend any specific CA and does not
1504 have any policy with respect to including or excluding any CA.
1505 Therefore it does not make any sense to ship an arbitrary selection
1506 of root CA certificates with the OpenSSL software.
1509 *) RSA OAEP patches to fix two separate invalid memory reads.
1510 The first one involves inputs when 'lzero' is greater than
1511 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1512 before the beginning of from). The second one involves inputs where
1513 the 'db' section contains nothing but zeroes (there is a one-byte
1514 invalid read after the end of 'db').
1515 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1517 *) Partial backport from 0.9.9-dev:
1519 Introduce bn_mul_mont (dedicated Montgomery multiplication
1520 procedure) as a candidate for BIGNUM assembler implementation.
1521 While 0.9.9-dev uses assembler for various architectures, only
1522 x86_64 is available by default here in the 0.9.8 branch, and
1523 32-bit x86 is available through a compile-time setting.
1525 To try the 32-bit x86 assembler implementation, use Configure
1526 option "enable-montasm" (which exists only for this backport).
1528 As "enable-montasm" for 32-bit x86 disclaims code stability
1529 anyway, in this constellation we activate additional code
1530 backported from 0.9.9-dev for further performance improvements,
1531 namely BN_from_montgomery_word. (To enable this otherwise,
1532 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1534 [Andy Polyakov (backport partially by Bodo Moeller)]
1536 *) Add TLS session ticket callback. This allows an application to set
1537 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1538 values. This is useful for key rollover for example where several key
1539 sets may exist with different names.
1542 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1543 This was broken until now in 0.9.8 releases, such that the only way
1544 a registered ENGINE could be used (assuming it initialises
1545 successfully on the host) was to explicitly set it as the default
1546 for the relevant algorithms. This is in contradiction with 0.9.7
1547 behaviour and the documentation. With this fix, when an ENGINE is
1548 registered into a given algorithm's table of implementations, the
1549 'uptodate' flag is reset so that auto-discovery will be used next
1550 time a new context for that algorithm attempts to select an
1552 [Ian Lister (tweaked by Geoff Thorpe)]
1554 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1555 implemention in the following ways:
1557 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1560 Lack of BER streaming support means one pass streaming processing is
1561 only supported if data is detached: setting the streaming flag is
1562 ignored for embedded content.
1564 CMS support is disabled by default and must be explicitly enabled
1565 with the enable-cms configuration option.
1568 *) Update the GMP engine glue to do direct copies between BIGNUM and
1569 mpz_t when openssl and GMP use the same limb size. Otherwise the
1570 existing "conversion via a text string export" trick is still used.
1571 [Paul Sheer <paulsheer@gmail.com>]
1573 *) Zlib compression BIO. This is a filter BIO which compressed and
1574 uncompresses any data passed through it.
1577 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1578 RFC3394 compatible AES key wrapping.
1581 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1582 sets string data without copying. X509_ALGOR_set0() and
1583 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1584 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1585 from an X509_ATTRIBUTE structure optionally checking it occurs only
1586 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1590 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1591 to get the expected BN_FLG_CONSTTIME behavior.
1592 [Bodo Moeller (Google)]
1596 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1597 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1598 - added some more tests to do_tests.pl
1599 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1600 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1601 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1602 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1603 - various changes to netware.pl to enable gcc-cross builds on Win32
1605 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1606 - various changes to fix missing prototype warnings
1607 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1608 - added AES, WHIRLPOOL and CPUID assembler code to build files
1609 - added missing AES assembler make rules to mk1mf.pl
1610 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1611 [Guenter Knauf <eflash@gmx.net>]
1613 *) Implement certificate status request TLS extension defined in RFC3546.
1614 A client can set the appropriate parameters and receive the encoded
1615 OCSP response via a callback. A server can query the supplied parameters
1616 and set the encoded OCSP response in the callback. Add simplified examples
1617 to s_client and s_server.
1620 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1622 *) Fix various bugs:
1623 + Binary incompatibility of ssl_ctx_st structure
1624 + DTLS interoperation with non-compliant servers
1625 + Don't call get_session_cb() without proposed session
1626 + Fix ia64 assembler code
1627 [Andy Polyakov, Steve Henson]
1629 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1631 *) DTLS Handshake overhaul. There were longstanding issues with
1632 OpenSSL DTLS implementation, which were making it impossible for
1633 RFC 4347 compliant client to communicate with OpenSSL server.
1634 Unfortunately just fixing these incompatibilities would "cut off"
1635 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1636 server keeps tolerating non RFC compliant syntax. The opposite is
1637 not true, 0.9.8f client can not communicate with earlier server.
1638 This update even addresses CVE-2007-4995.
1641 *) Changes to avoid need for function casts in OpenSSL: some compilers
1642 (gcc 4.2 and later) reject their use.
1643 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1646 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1647 RFC4507bis. The encrypted ticket format is an encrypted encoded
1648 SSL_SESSION structure, that way new session features are automatically
1651 If a client application caches session in an SSL_SESSION structure
1652 support is transparent because tickets are now stored in the encoded
1655 The SSL_CTX structure automatically generates keys for ticket
1656 protection in servers so again support should be possible
1657 with no application modification.
1659 If a client or server wishes to disable RFC4507 support then the option
1660 SSL_OP_NO_TICKET can be set.
1662 Add a TLS extension debugging callback to allow the contents of any client
1663 or server extensions to be examined.
1665 This work was sponsored by Google.
1668 *) Add initial support for TLS extensions, specifically for the server_name
1669 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1670 have new members for a host name. The SSL data structure has an
1671 additional member SSL_CTX *initial_ctx so that new sessions can be
1672 stored in that context to allow for session resumption, even after the
1673 SSL has been switched to a new SSL_CTX in reaction to a client's
1674 server_name extension.
1676 New functions (subject to change):
1678 SSL_get_servername()
1679 SSL_get_servername_type()
1682 New CTRL codes and macros (subject to change):
1684 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1685 - SSL_CTX_set_tlsext_servername_callback()
1686 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1687 - SSL_CTX_set_tlsext_servername_arg()
1688 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1690 openssl s_client has a new '-servername ...' option.
1692 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1693 '-key2 ...', '-servername_fatal' (subject to change). This allows
1694 testing the HostName extension for a specific single host name ('-cert'
1695 and '-key' remain fallbacks for handshakes without HostName
1696 negotiation). If the unrecogninzed_name alert has to be sent, this by
1697 default is a warning; it becomes fatal with the '-servername_fatal'
1700 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1702 *) Add AES and SSE2 assembly language support to VC++ build.
1705 *) Mitigate attack on final subtraction in Montgomery reduction.
1708 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1709 (which previously caused an internal error).
1712 *) Squeeze another 10% out of IGE mode when in != out.
1715 *) AES IGE mode speedup.
1716 [Dean Gaudet (Google)]
1718 *) Add the Korean symmetric 128-bit cipher SEED (see
1719 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1720 add SEED ciphersuites from RFC 4162:
1722 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1723 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1724 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1725 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1727 To minimize changes between patchlevels in the OpenSSL 0.9.8
1728 series, SEED remains excluded from compilation unless OpenSSL
1729 is configured with 'enable-seed'.
1730 [KISA, Bodo Moeller]
1732 *) Mitigate branch prediction attacks, which can be practical if a
1733 single processor is shared, allowing a spy process to extract
1734 information. For detailed background information, see
1735 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1736 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1737 and Necessary Software Countermeasures"). The core of the change
1738 are new versions BN_div_no_branch() and
1739 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1740 respectively, which are slower, but avoid the security-relevant
1741 conditional branches. These are automatically called by BN_div()
1742 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1743 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1744 remove a conditional branch.
1746 BN_FLG_CONSTTIME is the new name for the previous
1747 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1748 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1749 in the exponent causes BN_mod_exp_mont() to use the alternative
1750 implementation in BN_mod_exp_mont_consttime().) The old name
1751 remains as a deprecated alias.
1753 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1754 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1755 constant-time implementations for more than just exponentiation.
1756 Here too the old name is kept as a deprecated alias.
1758 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1759 the BN_BLINDING structure gets an independent copy of the
1760 modulus. This means that the previous "BIGNUM *m" argument to
1761 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1762 essentially becomes "const BIGNUM *m", although we can't actually
1763 change this in the header file before 0.9.9. It allows
1764 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1765 enable BN_FLG_CONSTTIME.
1767 [Matthew D Wood (Intel Corp)]
1769 *) In the SSL/TLS server implementation, be strict about session ID
1770 context matching (which matters if an application uses a single
1771 external cache for different purposes). Previously,
1772 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1773 set. This did ensure strict client verification, but meant that,
1774 with applications using a single external cache for quite
1775 different requirements, clients could circumvent ciphersuite
1776 restrictions for a given session ID context by starting a session
1777 in a different context.
1780 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1781 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1782 authentication-only ciphersuites.
1785 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1786 not complete and could lead to a possible single byte overflow
1787 (CVE-2007-5135) [Ben Laurie]
1789 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1791 *) Since AES128 and AES256 (and similarly Camellia128 and
1792 Camellia256) share a single mask bit in the logic of
1793 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1794 kludge to work properly if AES128 is available and AES256 isn't
1795 (or if Camellia128 is available and Camellia256 isn't).
1798 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1799 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1800 When a point or a seed is encoded in a BIT STRING, we need to
1801 prevent the removal of trailing zero bits to get the proper DER
1802 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1803 of a NamedBitList, for which trailing 0 bits need to be removed.)
1806 *) Have SSL/TLS server implementation tolerate "mismatched" record
1807 protocol version while receiving ClientHello even if the
1808 ClientHello is fragmented. (The server can't insist on the
1809 particular protocol version it has chosen before the ServerHello
1810 message has informed the client about his choice.)
1813 *) Add RFC 3779 support.
1814 [Rob Austein for ARIN, Ben Laurie]
1816 *) Load error codes if they are not already present instead of using a
1817 static variable. This allows them to be cleanly unloaded and reloaded.
1818 Improve header file function name parsing.
1821 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1822 or CAPABILITY handshake as required by RFCs.
1825 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1827 *) Introduce limits to prevent malicious keys being able to
1828 cause a denial of service. (CVE-2006-2940)
1829 [Steve Henson, Bodo Moeller]
1831 *) Fix ASN.1 parsing of certain invalid structures that can result
1832 in a denial of service. (CVE-2006-2937) [Steve Henson]
1834 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1835 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1837 *) Fix SSL client code which could crash if connecting to a
1838 malicious SSLv2 server. (CVE-2006-4343)
1839 [Tavis Ormandy and Will Drewry, Google Security Team]
1841 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1842 match only those. Before that, "AES256-SHA" would be interpreted
1843 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1844 the same strength classification in 0.9.7h) as we currently only
1845 have a single AES bit in the ciphersuite description bitmap.
1846 That change, however, also applied to ciphersuite strings such as
1847 "RC4-MD5" that intentionally matched multiple ciphersuites --
1848 namely, SSL 2.0 ciphersuites in addition to the more common ones
1849 from SSL 3.0/TLS 1.0.
1851 So we change the selection algorithm again: Naming an explicit
1852 ciphersuite selects this one ciphersuite, and any other similar
1853 ciphersuite (same bitmap) from *other* protocol versions.
1854 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1855 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1857 Since SSL 2.0 does not have any ciphersuites for which the
1858 128/256 bit distinction would be relevant, this works for now.
1859 The proper fix will be to use different bits for AES128 and
1860 AES256, which would have avoided the problems from the beginning;
1861 however, bits are scarce, so we can only do this in a new release
1862 (not just a patchlevel) when we can change the SSL_CIPHER
1863 definition to split the single 'unsigned long mask' bitmap into
1864 multiple values to extend the available space.
1868 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1870 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1871 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1873 *) Add AES IGE and biIGE modes.
1876 *) Change the Unix randomness entropy gathering to use poll() when
1877 possible instead of select(), since the latter has some
1878 undesirable limitations.
1879 [Darryl Miles via Richard Levitte and Bodo Moeller]
1881 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1882 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1883 cannot be implicitly activated as part of, e.g., the "AES" alias.
1884 However, please upgrade to OpenSSL 0.9.9[-dev] for
1885 non-experimental use of the ECC ciphersuites to get TLS extension
1886 support, which is required for curve and point format negotiation
1887 to avoid potential handshake problems.
1890 *) Disable rogue ciphersuites:
1892 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1893 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1894 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1896 The latter two were purportedly from
1897 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1900 Also deactivate the remaining ciphersuites from
1901 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1902 unofficial, and the ID has long expired.
1905 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1906 dual-core machines) and other potential thread-safety issues.
1909 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1910 versions), which is now available for royalty-free use
1911 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1912 Also, add Camellia TLS ciphersuites from RFC 4132.
1914 To minimize changes between patchlevels in the OpenSSL 0.9.8
1915 series, Camellia remains excluded from compilation unless OpenSSL
1916 is configured with 'enable-camellia'.
1919 *) Disable the padding bug check when compression is in use. The padding
1920 bug check assumes the first packet is of even length, this is not
1921 necessarily true if compresssion is enabled and can result in false
1922 positives causing handshake failure. The actual bug test is ancient
1923 code so it is hoped that implementations will either have fixed it by
1924 now or any which still have the bug do not support compression.
1927 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1929 *) When applying a cipher rule check to see if string match is an explicit
1930 cipher suite and only match that one cipher suite if it is.
1933 *) Link in manifests for VC++ if needed.
1934 [Austin Ziegler <halostatue@gmail.com>]
1936 *) Update support for ECC-based TLS ciphersuites according to
1937 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1938 TLS extensions, which are supported starting with the 0.9.9
1939 branch, not in the OpenSSL 0.9.8 branch).
1942 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1943 opaque EVP_CIPHER_CTX handling.
1946 *) Fixes and enhancements to zlib compression code. We now only use
1947 "zlib1.dll" and use the default __cdecl calling convention on Win32
1948 to conform with the standards mentioned here:
1949 http://www.zlib.net/DLL_FAQ.txt
1950 Static zlib linking now works on Windows and the new --with-zlib-include
1951 --with-zlib-lib options to Configure can be used to supply the location
1952 of the headers and library. Gracefully handle case where zlib library
1956 *) Several fixes and enhancements to the OID generation code. The old code
1957 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1958 handle numbers larger than ULONG_MAX, truncated printing and had a
1959 non standard OBJ_obj2txt() behaviour.
1962 *) Add support for building of engines under engine/ as shared libraries
1963 under VC++ build system.
1966 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1967 Hopefully, we will not see any false combination of paths any more.
1970 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1972 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1973 (part of SSL_OP_ALL). This option used to disable the
1974 countermeasure against man-in-the-middle protocol-version
1975 rollback in the SSL 2.0 server implementation, which is a bad
1976 idea. (CVE-2005-2969)
1978 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1979 for Information Security, National Institute of Advanced Industrial
1980 Science and Technology [AIST], Japan)]
1982 *) Add two function to clear and return the verify parameter flags.
1985 *) Keep cipherlists sorted in the source instead of sorting them at
1986 runtime, thus removing the need for a lock.
1989 *) Avoid some small subgroup attacks in Diffie-Hellman.
1990 [Nick Mathewson and Ben Laurie]
1992 *) Add functions for well-known primes.
1995 *) Extended Windows CE support.
1996 [Satoshi Nakamura and Andy Polyakov]
1998 *) Initialize SSL_METHOD structures at compile time instead of during
1999 runtime, thus removing the need for a lock.
2002 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2003 attempting to decrypt each encrypted key in turn. Add support to
2007 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2009 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2012 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2015 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2016 key into the same file any more.
2019 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2022 *) Add -utf8 command line and config file option to 'ca'.
2023 [Stefan <stf@udoma.org]
2025 *) Removed the macro des_crypt(), as it seems to conflict with some
2026 libraries. Use DES_crypt().
2029 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2030 involves renaming the source and generated shared-libs for
2031 both. The engines will accept the corrected or legacy ids
2032 ('ncipher' and '4758_cca' respectively) when binding. NB,
2033 this only applies when building 'shared'.
2034 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2036 *) Add attribute functions to EVP_PKEY structure. Modify
2037 PKCS12_create() to recognize a CSP name attribute and
2038 use it. Make -CSP option work again in pkcs12 utility.
2041 *) Add new functionality to the bn blinding code:
2042 - automatic re-creation of the BN_BLINDING parameters after
2043 a fixed number of uses (currently 32)
2044 - add new function for parameter creation
2045 - introduce flags to control the update behaviour of the
2046 BN_BLINDING parameters
2047 - hide BN_BLINDING structure
2048 Add a second BN_BLINDING slot to the RSA structure to improve
2049 performance when a single RSA object is shared among several
2053 *) Add support for DTLS.
2054 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2056 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2057 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2060 *) Remove buggy and incompletet DH cert support from
2061 ssl/ssl_rsa.c and ssl/s3_both.c
2064 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2065 the apps/openssl applications.
2068 *) Compile clean with "-Wall -Wmissing-prototypes
2069 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2070 DEBUG_SAFESTACK must also be set.
2073 *) Change ./Configure so that certain algorithms can be disabled by default.
2074 The new counterpiece to "no-xxx" is "enable-xxx".
2076 The patented RC5 and MDC2 algorithms will now be disabled unless
2077 "enable-rc5" and "enable-mdc2", respectively, are specified.
2079 (IDEA remains enabled despite being patented. This is because IDEA
2080 is frequently required for interoperability, and there is no license
2081 fee for non-commercial use. As before, "no-idea" can be used to
2082 avoid this algorithm.)
2086 *) Add processing of proxy certificates (see RFC 3820). This work was
2087 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2088 EGEE (Enabling Grids for E-science in Europe).
2091 *) RC4 performance overhaul on modern architectures/implementations, such
2092 as Intel P4, IA-64 and AMD64.
2095 *) New utility extract-section.pl. This can be used specify an alternative
2096 section number in a pod file instead of having to treat each file as
2097 a separate case in Makefile. This can be done by adding two lines to the
2100 =for comment openssl_section:XXX
2102 The blank line is mandatory.
2106 *) New arguments -certform, -keyform and -pass for s_client and s_server
2107 to allow alternative format key and certificate files and passphrase
2111 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2112 update associated structures and add various utility functions.
2114 Add new policy related verify parameters, include policy checking in
2115 standard verify code. Enhance 'smime' application with extra parameters
2116 to support policy checking and print out.
2119 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2120 Nehemiah processors. These extensions support AES encryption in hardware
2121 as well as RNG (though RNG support is currently disabled).
2122 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2124 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2127 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2128 [Andy Polyakov and a number of other people]
2130 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2131 implementation contributed by IBM.
2132 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2134 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2135 exponent rather than 'unsigned long'. There is a corresponding change to
2136 the new 'rsa_keygen' element of the RSA_METHOD structure.
2137 [Jelte Jansen, Geoff Thorpe]
2139 *) Functionality for creating the initial serial number file is now
2140 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2142 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2143 number file to 1, which is bound to cause problems. To avoid
2144 the problems while respecting compatibility between different 0.9.7
2145 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2146 CA.pl for serial number initialization. With the new release 0.9.8,
2147 we can fix the problem directly in the 'ca' utility.)
2150 *) Reduced header interdepencies by declaring more opaque objects in
2151 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2152 give fewer recursive includes, which could break lazy source code - so
2153 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2154 developers should define this symbol when building and using openssl to
2155 ensure they track the recommended behaviour, interfaces, [etc], but
2156 backwards-compatible behaviour prevails when this isn't defined.
2159 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2162 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2163 This will generate a random key of the appropriate length based on the
2164 cipher context. The EVP_CIPHER can provide its own random key generation
2165 routine to support keys of a specific form. This is used in the des and
2166 3des routines to generate a key of the correct parity. Update S/MIME
2167 code to use new functions and hence generate correct parity DES keys.
2168 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2169 valid (weak or incorrect parity).
2172 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2173 as looking them up. This is useful when the verified structure may contain
2174 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2175 present unless the new PKCS7_NO_CRL flag is asserted.
2178 *) Extend ASN1 oid configuration module. It now additionally accepts the
2181 shortName = some long name, 1.2.3.4
2184 *) Reimplemented the BN_CTX implementation. There is now no more static
2185 limitation on the number of variables it can handle nor the depth of the
2186 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2187 information can now expand as required, and rather than having a single
2188 static array of bignums, BN_CTX now uses a linked-list of such arrays
2189 allowing it to expand on demand whilst maintaining the usefulness of
2190 BN_CTX's "bundling".
2193 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2194 to allow all RSA operations to function using a single BN_CTX.
2197 *) Preliminary support for certificate policy evaluation and checking. This
2198 is initially intended to pass the tests outlined in "Conformance Testing
2199 of Relying Party Client Certificate Path Processing Logic" v1.07.
2202 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2203 remained unused and not that useful. A variety of other little bignum
2204 tweaks and fixes have also been made continuing on from the audit (see
2208 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2209 associated ASN1, EVP and SSL functions and old ASN1 macros.
2212 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2213 and this should never fail. So the return value from the use of
2214 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2215 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2218 *) BN_CTX_get() should return zero-valued bignums, providing the same
2219 initialised value as BN_new().
2220 [Geoff Thorpe, suggested by Ulf Möller]
2222 *) Support for inhibitAnyPolicy certificate extension.
2225 *) An audit of the BIGNUM code is underway, for which debugging code is
2226 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2227 is considered valid when processing BIGNUMs, and causes execution to
2228 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2229 further steps are taken to deliberately pollute unused data in BIGNUM
2230 structures to try and expose faulty code further on. For now, openssl will
2231 (in its default mode of operation) continue to tolerate the inconsistent
2232 forms that it has tolerated in the past, but authors and packagers should
2233 consider trying openssl and their own applications when compiled with
2234 these debugging symbols defined. It will help highlight potential bugs in
2235 their own code, and will improve the test coverage for OpenSSL itself. At
2236 some point, these tighter rules will become openssl's default to improve
2237 maintainability, though the assert()s and other overheads will remain only
2238 in debugging configurations. See bn.h for more details.
2239 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2241 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2242 that can only be obtained through BN_CTX_new() (which implicitly
2243 initialises it). The presence of this function only made it possible
2244 to overwrite an existing structure (and cause memory leaks).
2247 *) Because of the callback-based approach for implementing LHASH as a
2248 template type, lh_insert() adds opaque objects to hash-tables and
2249 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2250 to clean up those corresponding objects before destroying the hash table
2251 (and losing the object pointers). So some over-zealous constifications in
2252 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2253 objects as "const" and the lh_doall[_arg] callback wrappers are not
2254 prototyped to have "const" restrictions on the object pointers they are
2255 given (and so aren't required to cast them away any more).
2258 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2259 (speed) prefers to use its own implementation. The two implementations
2260 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2261 its object type properly exposed (MS_TM) instead of casting to/from "char
2262 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2263 aren't necessarily the greatest nomenclatures - but this is what was used
2264 internally to the implementation so I've used that for now.
2267 *) Ensure that deprecated functions do not get compiled when
2268 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2269 the self-tests were still using deprecated key-generation functions so
2270 these have been updated also.
2273 *) Reorganise PKCS#7 code to separate the digest location functionality
2274 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2275 New function PKCS7_set_digest() to set the digest type for PKCS#7
2276 digestedData type. Add additional code to correctly generate the
2277 digestedData type and add support for this type in PKCS7 initialization
2281 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2282 structure of type "other".
2285 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2286 sure the loop does correctly stop and breaking ("division by zero")
2287 modulus operations are not performed. The (pre-generated) prime
2288 table crypto/bn/bn_prime.h was already correct, but it could not be
2289 re-generated on some platforms because of the "division by zero"
2290 situation in the script.
2291 [Ralf S. Engelschall]
2293 *) Update support for ECC-based TLS ciphersuites according to
2294 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2295 SHA-1 now is only used for "small" curves (where the
2296 representation of a field element takes up to 24 bytes); for
2297 larger curves, the field element resulting from ECDH is directly
2298 used as premaster secret.
2299 [Douglas Stebila (Sun Microsystems Laboratories)]
2301 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2302 curve secp160r1 to the tests.
2303 [Douglas Stebila (Sun Microsystems Laboratories)]
2305 *) Add the possibility to load symbols globally with DSO.
2306 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2308 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2309 control of the error stack.
2312 *) Add support for STORE in ENGINE.
2315 *) Add the STORE type. The intention is to provide a common interface
2316 to certificate and key stores, be they simple file-based stores, or
2317 HSM-type store, or LDAP stores, or...
2318 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2321 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2322 pass a list of arguments to any function as well as provide a way
2323 for a function to pass data back to the caller.
2326 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2327 works like BUF_strdup() but can be used to duplicate a portion of
2328 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2332 *) Add the function sk_find_ex() which works like sk_find(), but will
2333 return an index to an element even if an exact match couldn't be
2334 found. The index is guaranteed to point at the element where the
2335 searched-for key would be inserted to preserve sorting order.
2338 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2339 takes an extra flags argument for optional functionality. Currently,
2340 the following flags are defined:
2342 OBJ_BSEARCH_VALUE_ON_NOMATCH
2343 This one gets OBJ_bsearch_ex() to return a pointer to the first
2344 element where the comparing function returns a negative or zero
2347 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2348 This one gets OBJ_bsearch_ex() to return a pointer to the first
2349 element where the comparing function returns zero. This is useful
2350 if there are more than one element where the comparing function
2354 *) Make it possible to create self-signed certificates with 'openssl ca'
2355 in such a way that the self-signed certificate becomes part of the
2356 CA database and uses the same mechanisms for serial number generation
2357 as all other certificate signing. The new flag '-selfsign' enables
2358 this functionality. Adapt CA.sh and CA.pl.in.
2361 *) Add functionality to check the public key of a certificate request
2362 against a given private. This is useful to check that a certificate
2363 request can be signed by that key (self-signing).
2366 *) Make it possible to have multiple active certificates with the same
2367 subject in the CA index file. This is done only if the keyword
2368 'unique_subject' is set to 'no' in the main CA section (default
2369 if 'CA_default') of the configuration file. The value is saved
2370 with the database itself in a separate index attribute file,
2371 named like the index file with '.attr' appended to the name.
2374 *) Generate muti valued AVAs using '+' notation in config files for
2378 *) Support for nameConstraints certificate extension.
2381 *) Support for policyConstraints certificate extension.
2384 *) Support for policyMappings certificate extension.
2387 *) Make sure the default DSA_METHOD implementation only uses its
2388 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2389 and change its own handlers to be NULL so as to remove unnecessary
2390 indirection. This lets alternative implementations fallback to the
2391 default implementation more easily.
2394 *) Support for directoryName in GeneralName related extensions
2398 *) Make it possible to link applications using Makefile.shared.
2399 Make that possible even when linking against static libraries!
2402 *) Support for single pass processing for S/MIME signing. This now
2403 means that S/MIME signing can be done from a pipe, in addition
2404 cleartext signing (multipart/signed type) is effectively streaming
2405 and the signed data does not need to be all held in memory.
2407 This is done with a new flag PKCS7_STREAM. When this flag is set
2408 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2409 is done after the data is output (and digests calculated) in
2410 SMIME_write_PKCS7().
2413 *) Add full support for -rpath/-R, both in shared libraries and
2414 applications, at least on the platforms where it's known how
2418 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2419 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2420 will now compute a table of multiples of the generator that
2421 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2422 faster (notably in the case of a single point multiplication,
2423 scalar * generator).
2424 [Nils Larsch, Bodo Moeller]
2426 *) IPv6 support for certificate extensions. The various extensions
2427 which use the IP:a.b.c.d can now take IPv6 addresses using the
2428 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2432 *) Added an ENGINE that implements RSA by performing private key
2433 exponentiations with the GMP library. The conversions to and from
2434 GMP's mpz_t format aren't optimised nor are any montgomery forms
2435 cached, and on x86 it appears OpenSSL's own performance has caught up.
2436 However there are likely to be other architectures where GMP could
2437 provide a boost. This ENGINE is not built in by default, but it can be
2438 specified at Configure time and should be accompanied by the necessary
2439 linker additions, eg;
2440 ./config -DOPENSSL_USE_GMP -lgmp
2443 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2444 testing availability of engines with "-t" - the old behaviour is
2445 produced by increasing the feature's verbosity with "-tt".
2448 *) ECDSA routines: under certain error conditions uninitialized BN objects
2449 could be freed. Solution: make sure initialization is performed early
2450 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2454 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2455 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2456 software implementations. For DSA and DH, parameter generation can
2457 also be overriden by providing the appropriate method callbacks.
2460 *) Change the "progress" mechanism used in key-generation and
2461 primality testing to functions that take a new BN_GENCB pointer in
2462 place of callback/argument pairs. The new API functions have "_ex"
2463 postfixes and the older functions are reimplemented as wrappers for
2464 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2465 declarations of the old functions to help (graceful) attempts to
2466 migrate to the new functions. Also, the new key-generation API
2467 functions operate on a caller-supplied key-structure and return
2468 success/failure rather than returning a key or NULL - this is to
2469 help make "keygen" another member function of RSA_METHOD etc.
2471 Example for using the new callback interface:
2473 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2477 BN_GENCB_set(&my_cb, my_callback, my_arg);
2479 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2480 /* For the meaning of a, b in calls to my_callback(), see the
2481 * documentation of the function that calls the callback.
2482 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2483 * my_callback should return 1 if it wants BN_is_prime_ex()
2484 * to continue, or 0 to stop.
2489 *) Change the ZLIB compression method to be stateful, and make it
2490 available to TLS with the number defined in
2491 draft-ietf-tls-compression-04.txt.
2494 *) Add the ASN.1 structures and functions for CertificatePair, which
2495 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2497 CertificatePair ::= SEQUENCE {
2498 forward [0] Certificate OPTIONAL,
2499 reverse [1] Certificate OPTIONAL,
2500 -- at least one of the pair shall be present -- }
2502 Also implement the PEM functions to read and write certificate
2503 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2505 This needed to be defined, mostly for the sake of the LDAP
2506 attribute crossCertificatePair, but may prove useful elsewhere as
2510 *) Make it possible to inhibit symlinking of shared libraries in
2511 Makefile.shared, for Cygwin's sake.
2514 *) Extend the BIGNUM API by creating a function
2515 void BN_set_negative(BIGNUM *a, int neg);
2516 and a macro that behave like
2517 int BN_is_negative(const BIGNUM *a);
2519 to avoid the need to access 'a->neg' directly in applications.
2522 *) Implement fast modular reduction for pseudo-Mersenne primes
2523 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2524 EC_GROUP_new_curve_GFp() will now automatically use this
2526 [Nils Larsch <nla@trustcenter.de>]
2528 *) Add new lock type (CRYPTO_LOCK_BN).
2531 *) Change the ENGINE framework to automatically load engines
2532 dynamically from specific directories unless they could be
2533 found to already be built in or loaded. Move all the
2534 current engines except for the cryptodev one to a new
2536 The engines in engines/ are built as shared libraries if
2537 the "shared" options was given to ./Configure or ./config.
2538 Otherwise, they are inserted in libcrypto.a.
2539 /usr/local/ssl/engines is the default directory for dynamic
2540 engines, but that can be overriden at configure time through
2541 the usual use of --prefix and/or --openssldir, and at run
2542 time with the environment variable OPENSSL_ENGINES.
2543 [Geoff Thorpe and Richard Levitte]
2545 *) Add Makefile.shared, a helper makefile to build shared
2546 libraries. Addapt Makefile.org.
2549 *) Add version info to Win32 DLLs.
2550 [Peter 'Luna' Runestig" <peter@runestig.com>]
2552 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2553 can be added using this API to created arbitrary PKCS#12
2554 files while avoiding the low level API.
2556 New options to PKCS12_create(), key or cert can be NULL and
2557 will then be omitted from the output file. The encryption
2558 algorithm NIDs can be set to -1 for no encryption, the mac
2559 iteration count can be set to 0 to omit the mac.
2561 Enhance pkcs12 utility by making the -nokeys and -nocerts
2562 options work when creating a PKCS#12 file. New option -nomac
2563 to omit the mac, NONE can be set for an encryption algorithm.
2564 New code is modified to use the enhanced PKCS12_create()
2565 instead of the low level API.
2568 *) Extend ASN1 encoder to support indefinite length constructed
2569 encoding. This can output sequences tags and octet strings in
2570 this form. Modify pk7_asn1.c to support indefinite length
2571 encoding. This is experimental and needs additional code to
2572 be useful, such as an ASN1 bio and some enhanced streaming
2575 Extend template encode functionality so that tagging is passed
2576 down to the template encoder.
2579 *) Let 'openssl req' fail if an argument to '-newkey' is not
2580 recognized instead of using RSA as a default.
2583 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2584 As these are not official, they are not included in "ALL";
2585 the "ECCdraft" ciphersuite group alias can be used to select them.
2586 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2588 *) Add ECDH engine support.
2589 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2591 *) Add ECDH in new directory crypto/ecdh/.
2592 [Douglas Stebila (Sun Microsystems Laboratories)]
2594 *) Let BN_rand_range() abort with an error after 100 iterations
2595 without success (which indicates a broken PRNG).
2598 *) Change BN_mod_sqrt() so that it verifies that the input value
2599 is really the square of the return value. (Previously,
2600 BN_mod_sqrt would show GIGO behaviour.)
2603 *) Add named elliptic curves over binary fields from X9.62, SECG,
2604 and WAP/WTLS; add OIDs that were still missing.
2606 [Sheueling Chang Shantz and Douglas Stebila
2607 (Sun Microsystems Laboratories)]
2609 *) Extend the EC library for elliptic curves over binary fields
2610 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2613 EC_GF2m_simple_method
2617 EC_GROUP_new_curve_GF2m
2618 EC_GROUP_set_curve_GF2m
2619 EC_GROUP_get_curve_GF2m
2620 EC_POINT_set_affine_coordinates_GF2m
2621 EC_POINT_get_affine_coordinates_GF2m
2622 EC_POINT_set_compressed_coordinates_GF2m
2624 Point compression for binary fields is disabled by default for
2625 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2628 As binary polynomials are represented as BIGNUMs, various members
2629 of the EC_GROUP and EC_POINT data structures can be shared
2630 between the implementations for prime fields and binary fields;
2631 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2632 are essentially identical to their ..._GFp counterparts.
2633 (For simplicity, the '..._GFp' prefix has been dropped from
2634 various internal method names.)
2636 An internal 'field_div' method (similar to 'field_mul' and
2637 'field_sqr') has been added; this is used only for binary fields.
2639 [Sheueling Chang Shantz and Douglas Stebila
2640 (Sun Microsystems Laboratories)]
2642 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2643 through methods ('mul', 'precompute_mult').
2645 The generic implementations (now internally called 'ec_wNAF_mul'
2646 and 'ec_wNAF_precomputed_mult') remain the default if these
2647 methods are undefined.
2649 [Sheueling Chang Shantz and Douglas Stebila
2650 (Sun Microsystems Laboratories)]
2652 *) New function EC_GROUP_get_degree, which is defined through
2653 EC_METHOD. For curves over prime fields, this returns the bit
2654 length of the modulus.
2656 [Sheueling Chang Shantz and Douglas Stebila
2657 (Sun Microsystems Laboratories)]
2659 *) New functions EC_GROUP_dup, EC_POINT_dup.
2660 (These simply call ..._new and ..._copy).
2662 [Sheueling Chang Shantz and Douglas Stebila
2663 (Sun Microsystems Laboratories)]
2665 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2666 Polynomials are represented as BIGNUMs (where the sign bit is not
2667 used) in the following functions [macros]:
2670 BN_GF2m_sub [= BN_GF2m_add]
2671 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2672 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2673 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2675 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2676 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2677 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2678 BN_GF2m_cmp [= BN_ucmp]
2680 (Note that only the 'mod' functions are actually for fields GF(2^m).
2681 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2683 For some functions, an the irreducible polynomial defining a
2684 field can be given as an 'unsigned int[]' with strictly
2685 decreasing elements giving the indices of those bits that are set;
2686 i.e., p[] represents the polynomial
2687 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2689 p[0] > p[1] > ... > p[k] = 0.
2690 This applies to the following functions:
2695 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2696 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2698 BN_GF2m_mod_sqrt_arr
2699 BN_GF2m_mod_solve_quad_arr
2703 Conversion can be performed by the following functions:
2708 bntest.c has additional tests for binary polynomial arithmetic.
2710 Two implementations for BN_GF2m_mod_div() are available.
2711 The default algorithm simply uses BN_GF2m_mod_inv() and
2712 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2713 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2714 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2716 [Sheueling Chang Shantz and Douglas Stebila
2717 (Sun Microsystems Laboratories)]
2719 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2720 functionality is disabled at compile-time.
2721 [Douglas Stebila <douglas.stebila@sun.com>]
2723 *) Change default behaviour of 'openssl asn1parse' so that more
2724 information is visible when viewing, e.g., a certificate:
2726 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2727 mode the content of non-printable OCTET STRINGs is output in a
2728 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2729 avoid the appearance of a printable string.
2730 [Nils Larsch <nla@trustcenter.de>]
2732 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2734 EC_GROUP_set_asn1_flag()
2735 EC_GROUP_get_asn1_flag()
2736 EC_GROUP_set_point_conversion_form()
2737 EC_GROUP_get_point_conversion_form()
2738 These control ASN1 encoding details:
2739 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2740 has been set to OPENSSL_EC_NAMED_CURVE.
2741 - Points are encoded in uncompressed form by default; options for
2742 asn1_for are as for point2oct, namely
2743 POINT_CONVERSION_COMPRESSED
2744 POINT_CONVERSION_UNCOMPRESSED
2745 POINT_CONVERSION_HYBRID
2747 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2750 EC_GROUP_get0_seed()
2751 EC_GROUP_get_seed_len()
2752 This is used only for ASN1 purposes (so far).
2753 [Nils Larsch <nla@trustcenter.de>]
2755 *) Add 'field_type' member to EC_METHOD, which holds the NID
2756 of the appropriate field type OID. The new function
2757 EC_METHOD_get_field_type() returns this value.
2758 [Nils Larsch <nla@trustcenter.de>]
2763 EC_POINT_point2hex()
2764 EC_POINT_hex2point()
2765 providing useful interfaces to EC_POINT_point2oct() and
2766 EC_POINT_oct2point().
2767 [Nils Larsch <nla@trustcenter.de>]
2769 *) Change internals of the EC library so that the functions
2770 EC_GROUP_set_generator()
2771 EC_GROUP_get_generator()
2772 EC_GROUP_get_order()
2773 EC_GROUP_get_cofactor()
2774 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2775 to methods, which would lead to unnecessary code duplication when
2776 adding different types of curves.
2777 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2779 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2780 arithmetic, and such that modified wNAFs are generated
2781 (which avoid length expansion in many cases).
2784 *) Add a function EC_GROUP_check_discriminant() (defined via
2785 EC_METHOD) that verifies that the curve discriminant is non-zero.
2787 Add a function EC_GROUP_check() that makes some sanity tests
2788 on a EC_GROUP, its generator and order. This includes
2789 EC_GROUP_check_discriminant().
2790 [Nils Larsch <nla@trustcenter.de>]
2792 *) Add ECDSA in new directory crypto/ecdsa/.
2794 Add applications 'openssl ecparam' and 'openssl ecdsa'
2795 (these are based on 'openssl dsaparam' and 'openssl dsa').
2797 ECDSA support is also included in various other files across the
2798 library. Most notably,
2799 - 'openssl req' now has a '-newkey ecdsa:file' option;
2800 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2801 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2802 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2803 them suitable for ECDSA where domain parameters must be
2804 extracted before the specific public key;
2805 - ECDSA engine support has been added.
2806 [Nils Larsch <nla@trustcenter.de>]
2808 *) Include some named elliptic curves, and add OIDs from X9.62,
2809 SECG, and WAP/WTLS. Each curve can be obtained from the new
2811 EC_GROUP_new_by_curve_name(),
2812 and the list of available named curves can be obtained with
2813 EC_get_builtin_curves().
2814 Also add a 'curve_name' member to EC_GROUP objects, which can be
2816 EC_GROUP_set_curve_name()
2817 EC_GROUP_get_curve_name()
2818 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2820 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2821 was actually never needed) and in BN_mul(). The removal in BN_mul()
2822 required a small change in bn_mul_part_recursive() and the addition
2823 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2824 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2825 bn_sub_words() and bn_add_words() except they take arrays with
2829 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2831 *) Cleanse PEM buffers before freeing them since they may contain
2833 [Benjamin Bennett <ben@psc.edu>]
2835 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2836 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2837 authentication-only ciphersuites.
2840 *) Since AES128 and AES256 share a single mask bit in the logic of
2841 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2842 kludge to work properly if AES128 is available and AES256 isn't.
2845 *) Expand security boundary to match 1.1.1 module.
2848 *) Remove redundant features: hash file source, editing of test vectors
2849 modify fipsld to use external fips_premain.c signature.
2852 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2853 run algorithm test programs.
2856 *) Make algorithm test programs more tolerant of whitespace.
2859 *) Have SSL/TLS server implementation tolerate "mismatched" record
2860 protocol version while receiving ClientHello even if the
2861 ClientHello is fragmented. (The server can't insist on the
2862 particular protocol version it has chosen before the ServerHello
2863 message has informed the client about his choice.)
2866 *) Load error codes if they are not already present instead of using a
2867 static variable. This allows them to be cleanly unloaded and reloaded.
2870 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2872 *) Introduce limits to prevent malicious keys being able to
2873 cause a denial of service. (CVE-2006-2940)
2874 [Steve Henson, Bodo Moeller]
2876 *) Fix ASN.1 parsing of certain invalid structures that can result
2877 in a denial of service. (CVE-2006-2937) [Steve Henson]
2879 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2880 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2882 *) Fix SSL client code which could crash if connecting to a
2883 malicious SSLv2 server. (CVE-2006-4343)
2884 [Tavis Ormandy and Will Drewry, Google Security Team]
2886 *) Change ciphersuite string processing so that an explicit
2887 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2888 will no longer include "AES128-SHA"), and any other similar
2889 ciphersuite (same bitmap) from *other* protocol versions (so that
2890 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2891 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2892 changes from 0.9.8b and 0.9.8d.
2895 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2897 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2898 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2900 *) Change the Unix randomness entropy gathering to use poll() when
2901 possible instead of select(), since the latter has some
2902 undesirable limitations.
2903 [Darryl Miles via Richard Levitte and Bodo Moeller]
2905 *) Disable rogue ciphersuites:
2907 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2908 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2909 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2911 The latter two were purportedly from
2912 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2915 Also deactive the remaining ciphersuites from
2916 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2917 unofficial, and the ID has long expired.
2920 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2921 dual-core machines) and other potential thread-safety issues.
2924 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2926 *) Adapt fipsld and the build system to link against the validated FIPS
2927 module in FIPS mode.
2930 *) Fixes for VC++ 2005 build under Windows.
2933 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2934 from a Windows bash shell such as MSYS. It is autodetected from the
2935 "config" script when run from a VC++ environment. Modify standard VC++
2936 build to use fipscanister.o from the GNU make build.
2939 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2941 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2942 The value now differs depending on if you build for FIPS or not.
2943 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2944 safely run with a non-FIPSed libcrypto, as it may crash because of
2945 the difference induced by this change.
2948 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2950 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2951 (part of SSL_OP_ALL). This option used to disable the
2952 countermeasure against man-in-the-middle protocol-version
2953 rollback in the SSL 2.0 server implementation, which is a bad
2954 idea. (CVE-2005-2969)
2956 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2957 for Information Security, National Institute of Advanced Industrial
2958 Science and Technology [AIST], Japan)]
2960 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2961 mainly for FIPS compliance and not fully integrated at this stage.
2964 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2965 the exponentiation using a fixed-length exponent. (Otherwise,
2966 the information leaked through timing could expose the secret key
2967 after many signatures; cf. Bleichenbacher's attack on DSA with
2971 *) Make a new fixed-window mod_exp implementation the default for
2972 RSA, DSA, and DH private-key operations so that the sequence of
2973 squares and multiplies and the memory access pattern are
2974 independent of the particular secret key. This will mitigate
2975 cache-timing and potential related attacks.
2977 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2978 and this is automatically used by BN_mod_exp_mont() if the new flag
2979 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2980 will use this BN flag for private exponents unless the flag
2981 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2982 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2984 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2986 *) Change the client implementation for SSLv23_method() and
2987 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2988 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2989 (Previously, the SSL 2.0 backwards compatible Client Hello
2990 message format would be used even with SSL_OP_NO_SSLv2.)
2993 *) Add support for smime-type MIME parameter in S/MIME messages which some
2997 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2998 a threadsafe manner. Modify rsa code to use new function and add calls
2999 to dsa and dh code (which had race conditions before).
3002 *) Include the fixed error library code in the C error file definitions
3003 instead of fixing them up at runtime. This keeps the error code
3004 structures constant.
3007 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3009 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3012 *) Fixes for newer kerberos headers. NB: the casts are needed because
3013 the 'length' field is signed on one version and unsigned on another
3014 with no (?) obvious way to tell the difference, without these VC++
3015 complains. Also the "definition" of FAR (blank) is no longer included
3016 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3017 some needed definitions.
3020 *) Undo Cygwin change.
3023 *) Added support for proxy certificates according to RFC 3820.
3024 Because they may be a security thread to unaware applications,
3025 they must be explicitely allowed in run-time. See
3026 docs/HOWTO/proxy_certificates.txt for further information.
3029 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3031 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3032 server and client random values. Previously
3033 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3034 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3036 This change has negligible security impact because:
3038 1. Server and client random values still have 24 bytes of pseudo random
3041 2. Server and client random values are sent in the clear in the initial
3044 3. The master secret is derived using the premaster secret (48 bytes in
3045 size for static RSA ciphersuites) as well as client server and random
3048 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3051 [Stephen Henson, reported by UK NISCC]
3053 *) Use Windows randomness collection on Cygwin.
3056 *) Fix hang in EGD/PRNGD query when communication socket is closed
3057 prematurely by EGD/PRNGD.
3058 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3060 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3063 *) Back-port of selected performance improvements from development
3064 branch, as well as improved support for PowerPC platforms.
3067 *) Add lots of checks for memory allocation failure, error codes to indicate
3068 failure and freeing up memory if a failure occurs.
3069 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3071 *) Add new -passin argument to dgst.
3074 *) Perform some character comparisons of different types in X509_NAME_cmp:
3075 this is needed for some certificates that reencode DNs into UTF8Strings
3076 (in violation of RFC3280) and can't or wont issue name rollover
3080 *) Make an explicit check during certificate validation to see that
3081 the CA setting in each certificate on the chain is correct. As a
3082 side effect always do the following basic checks on extensions,
3083 not just when there's an associated purpose to the check:
3085 - if there is an unhandled critical extension (unless the user
3086 has chosen to ignore this fault)
3087 - if the path length has been exceeded (if one is set at all)
3088 - that certain extensions fit the associated purpose (if one has
3092 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3094 *) Avoid a race condition when CRLs are checked in a multi threaded
3095 environment. This would happen due to the reordering of the revoked
3096 entries during signature checking and serial number lookup. Now the
3097 encoding is cached and the serial number sort performed under a lock.
3098 Add new STACK function sk_is_sorted().
3101 *) Add Delta CRL to the extension code.
3104 *) Various fixes to s3_pkt.c so alerts are sent properly.
3105 [David Holmes <d.holmes@f5.com>]
3107 *) Reduce the chances of duplicate issuer name and serial numbers (in
3108 violation of RFC3280) using the OpenSSL certificate creation utilities.
3109 This is done by creating a random 64 bit value for the initial serial
3110 number when a serial number file is created or when a self signed
3111 certificate is created using 'openssl req -x509'. The initial serial
3112 number file is created using 'openssl x509 -next_serial' in CA.pl
3113 rather than being initialized to 1.
3116 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3118 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3119 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3120 [Joe Orton, Steve Henson]
3122 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3124 [Joe Orton, Steve Henson]
3126 *) Make it possible to have multiple active certificates with the same
3127 subject in the CA index file. This is done only if the keyword
3128 'unique_subject' is set to 'no' in the main CA section (default
3129 if 'CA_default') of the configuration file. The value is saved
3130 with the database itself in a separate index attribute file,
3131 named like the index file with '.attr' appended to the name.
3134 *) X509 verify fixes. Disable broken certificate workarounds when
3135 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3136 keyUsage extension present. Don't accept CRLs with unhandled critical
3137 extensions: since verify currently doesn't process CRL extensions this
3138 rejects a CRL with *any* critical extensions. Add new verify error codes
3142 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3143 A clarification of RFC2560 will require the use of OCTET STRINGs and
3144 some implementations cannot handle the current raw format. Since OpenSSL
3145 copies and compares OCSP nonces as opaque blobs without any attempt at
3146 parsing them this should not create any compatibility issues.
3149 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3150 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3151 this HMAC (and other) operations are several times slower than OpenSSL
3155 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3156 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3158 *) Use the correct content when signing type "other".
3161 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3163 *) Fix various bugs revealed by running the NISCC test suite:
3165 Stop out of bounds reads in the ASN1 code when presented with
3166 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3168 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3170 If verify callback ignores invalid public key errors don't try to check
3171 certificate signature with the NULL public key.
3175 *) New -ignore_err option in ocsp application to stop the server
3176 exiting on the first error in a request.
3179 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3180 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3184 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3185 extra data after the compression methods not only for TLS 1.0
3186 but also for SSL 3.0 (as required by the specification).
3187 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3189 *) Change X509_certificate_type() to mark the key as exported/exportable
3190 when it's 512 *bits* long, not 512 bytes.
3193 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3194 blocks during encryption.
3197 *) Various fixes to base64 BIO and non blocking I/O. On write
3198 flushes were not handled properly if the BIO retried. On read
3199 data was not being buffered properly and had various logic bugs.
3200 This also affects blocking I/O when the data being decoded is a
3204 *) Various S/MIME bugfixes and compatibility changes:
3205 output correct application/pkcs7 MIME type if
3206 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3207 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3208 of files as .eml work). Correctly handle very long lines in MIME
3212 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3214 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3215 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3216 a protocol version number mismatch like a decryption error
3217 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3220 *) Turn on RSA blinding by default in the default implementation
3221 to avoid a timing attack. Applications that don't want it can call
3222 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3223 They would be ill-advised to do so in most cases.
3224 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3226 *) Change RSA blinding code so that it works when the PRNG is not
3227 seeded (in this case, the secret RSA exponent is abused as
3228 an unpredictable seed -- if it is not unpredictable, there
3229 is no point in blinding anyway). Make RSA blinding thread-safe
3230 by remembering the creator's thread ID in rsa->blinding and
3231 having all other threads use local one-time blinding factors
3232 (this requires more computation than sharing rsa->blinding, but
3233 avoids excessive locking; and if an RSA object is not shared
3234 between threads, blinding will still be very fast).
3237 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3238 ENGINE as defaults for all supported algorithms irrespective of
3239 the 'flags' parameter. 'flags' is now honoured, so applications
3240 should make sure they are passing it correctly.
3243 *) Target "mingw" now allows native Windows code to be generated in
3244 the Cygwin environment as well as with the MinGW compiler.
3247 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3249 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3250 via timing by performing a MAC computation even if incorrrect
3251 block cipher padding has been found. This is a countermeasure
3252 against active attacks where the attacker has to distinguish
3253 between bad padding and a MAC verification error. (CVE-2003-0078)
3255 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3256 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3257 Martin Vuagnoux (EPFL, Ilion)]
3259 *) Make the no-err option work as intended. The intention with no-err
3260 is not to have the whole error stack handling routines removed from
3261 libcrypto, it's only intended to remove all the function name and
3262 reason texts, thereby removing some of the footprint that may not
3263 be interesting if those errors aren't displayed anyway.
3265 NOTE: it's still possible for any application or module to have it's
3266 own set of error texts inserted. The routines are there, just not
3267 used by default when no-err is given.
3270 *) Add support for FreeBSD on IA64.
3271 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3273 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3274 Kerberos function mit_des_cbc_cksum(). Before this change,
3275 the value returned by DES_cbc_cksum() was like the one from
3276 mit_des_cbc_cksum(), except the bytes were swapped.
3277 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3279 *) Allow an application to disable the automatic SSL chain building.
3280 Before this a rather primitive chain build was always performed in
3281 ssl3_output_cert_chain(): an application had no way to send the
3282 correct chain if the automatic operation produced an incorrect result.
3284 Now the chain builder is disabled if either:
3286 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3288 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3290 The reasoning behind this is that an application would not want the
3291 auto chain building to take place if extra chain certificates are
3292 present and it might also want a means of sending no additional
3293 certificates (for example the chain has two certificates and the
3297 *) Add the possibility to build without the ENGINE framework.
3298 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3300 *) Under Win32 gmtime() can return NULL: check return value in
3301 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3304 *) DSA routines: under certain error conditions uninitialized BN objects
3305 could be freed. Solution: make sure initialization is performed early
3306 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3307 Nils Larsch <nla@trustcenter.de> via PR#459)
3310 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3311 checked on reconnect on the client side, therefore session resumption
3312 could still fail with a "ssl session id is different" error. This
3313 behaviour is masked when SSL_OP_ALL is used due to
3314 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3315 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3316 followup to PR #377.
3319 *) IA-32 assembler support enhancements: unified ELF targets, support
3320 for SCO/Caldera platforms, fix for Cygwin shared build.
3323 *) Add support for FreeBSD on sparc64. As a consequence, support for
3324 FreeBSD on non-x86 processors is separate from x86 processors on
3325 the config script, much like the NetBSD support.
3326 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3328 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3330 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3333 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3334 code (06) was taken as the first octet of the session ID and the last
3335 octet was ignored consequently. As a result SSLv2 client side session
3336 caching could not have worked due to the session ID mismatch between
3338 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3342 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3343 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3347 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3348 seems that in spite of existing for more than a year, many application
3349 author have done nothing to provide the necessary callbacks, which
3350 means that this particular engine will not work properly anywhere.
3351 This is a very unfortunate situation which forces us, in the name
3352 of usability, to give the hw_ncipher.c a static lock, which is part
3354 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3355 appear in 0.9.8 or later. We EXPECT application authors to have
3356 dealt properly with this when 0.9.8 is released (unless we actually
3357 make such changes in the libcrypto locking code that changes will
3358 have to be made anyway).
3361 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3362 octets have been read, EOF or an error occurs. Without this change
3363 some truncated ASN1 structures will not produce an error.
3366 *) Disable Heimdal support, since it hasn't been fully implemented.
3367 Still give the possibility to force the use of Heimdal, but with
3368 warnings and a request that patches get sent to openssl-dev.
3371 *) Add the VC-CE target, introduce the WINCE sysname, and add
3372 INSTALL.WCE and appropriate conditionals to make it build.
3373 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3375 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3376 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3377 edit numbers of the version.
3378 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3380 *) Introduce safe string copy and catenation functions
3381 (BUF_strlcpy() and BUF_strlcat()).
3382 [Ben Laurie (CHATS) and Richard Levitte]
3384 *) Avoid using fixed-size buffers for one-line DNs.
3385 [Ben Laurie (CHATS)]
3387 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3388 resizing buffers containing secrets, and use where appropriate.
3389 [Ben Laurie (CHATS)]
3391 *) Avoid using fixed size buffers for configuration file location.
3392 [Ben Laurie (CHATS)]
3394 *) Avoid filename truncation for various CA files.
3395 [Ben Laurie (CHATS)]
3397 *) Use sizeof in preference to magic numbers.
3398 [Ben Laurie (CHATS)]
3400 *) Avoid filename truncation in cert requests.
3401 [Ben Laurie (CHATS)]
3403 *) Add assertions to check for (supposedly impossible) buffer
3405 [Ben Laurie (CHATS)]
3407 *) Don't cache truncated DNS entries in the local cache (this could
3408 potentially lead to a spoofing attack).
3409 [Ben Laurie (CHATS)]
3411 *) Fix various buffers to be large enough for hex/decimal
3412 representations in a platform independent manner.
3413 [Ben Laurie (CHATS)]
3415 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3416 resizing buffers containing secrets, and use where appropriate.
3417 [Ben Laurie (CHATS)]
3419 *) Add BIO_indent() to avoid much slightly worrying code to do
3421 [Ben Laurie (CHATS)]
3423 *) Convert sprintf()/BIO_puts() to BIO_printf().
3424 [Ben Laurie (CHATS)]
3426 *) buffer_gets() could terminate with the buffer only half
3428 [Ben Laurie (CHATS)]
3430 *) Add assertions to prevent user-supplied crypto functions from
3431 overflowing internal buffers by having large block sizes, etc.
3432 [Ben Laurie (CHATS)]
3434 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3436 [Ben Laurie (CHATS)]
3438 *) Eliminate unused copy of key in RC4.
3439 [Ben Laurie (CHATS)]
3441 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3442 [Ben Laurie (CHATS)]
3444 *) Fix off-by-one error in EGD path.
3445 [Ben Laurie (CHATS)]
3447 *) If RANDFILE path is too long, ignore instead of truncating.
3448 [Ben Laurie (CHATS)]
3450 *) Eliminate unused and incorrectly sized X.509 structure
3452 [Ben Laurie (CHATS)]
3454 *) Eliminate unused and dangerous function knumber().
3455 [Ben Laurie (CHATS)]
3457 *) Eliminate unused and dangerous structure, KSSL_ERR.
3458 [Ben Laurie (CHATS)]
3460 *) Protect against overlong session ID context length in an encoded
3461 session object. Since these are local, this does not appear to be
3463 [Ben Laurie (CHATS)]
3465 *) Change from security patch (see 0.9.6e below) that did not affect
3466 the 0.9.6 release series:
3468 Remote buffer overflow in SSL3 protocol - an attacker could
3469 supply an oversized master key in Kerberos-enabled versions.
3471 [Ben Laurie (CHATS)]
3473 *) Change the SSL kerb5 codes to match RFC 2712.
3476 *) Make -nameopt work fully for req and add -reqopt switch.
3477 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3479 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3480 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3482 *) Make sure tests can be performed even if the corresponding algorithms
3483 have been removed entirely. This was also the last step to make
3484 OpenSSL compilable with DJGPP under all reasonable conditions.
3485 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3487 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3488 to allow version independent disabling of normally unselected ciphers,
3489 which may be activated as a side-effect of selecting a single cipher.
3491 (E.g., cipher list string "RSA" enables ciphersuites that are left
3492 out of "ALL" because they do not provide symmetric encryption.
3493 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3494 [Lutz Jaenicke, Bodo Moeller]
3496 *) Add appropriate support for separate platform-dependent build
3497 directories. The recommended way to make a platform-dependent
3498 build directory is the following (tested on Linux), maybe with
3501 # Place yourself outside of the OpenSSL source tree. In
3502 # this example, the environment variable OPENSSL_SOURCE
3503 # is assumed to contain the absolute OpenSSL source directory.
3504 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3505 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3506 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3507 mkdir -p `dirname $F`
3508 ln -s $OPENSSL_SOURCE/$F $F
3511 To be absolutely sure not to disturb the source tree, a "make clean"
3512 is a good thing. If it isn't successfull, don't worry about it,
3513 it probably means the source directory is very clean.
3516 *) Make sure any ENGINE control commands make local copies of string
3517 pointers passed to them whenever necessary. Otherwise it is possible
3518 the caller may have overwritten (or deallocated) the original string
3519 data when a later ENGINE operation tries to use the stored values.
3520 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3522 *) Improve diagnostics in file reading and command-line digests.
3523 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3525 *) Add AES modes CFB and OFB to the object database. Correct an
3526 error in AES-CFB decryption.
3529 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3530 allows existing EVP_CIPHER_CTX structures to be reused after
3531 calling EVP_*Final(). This behaviour is used by encryption
3532 BIOs and some applications. This has the side effect that
3533 applications must explicitly clean up cipher contexts with
3534 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3537 *) Check the values of dna and dnb in bn_mul_recursive before calling
3538 bn_mul_comba (a non zero value means the a or b arrays do not contain
3539 n2 elements) and fallback to bn_mul_normal if either is not zero.
3542 *) Fix escaping of non-ASCII characters when using the -subj option
3543 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3546 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3547 form for "surname", serialNumber has no short form.
3548 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3549 therefore remove "mail" short name for "internet 7".
3550 The OID for unique identifiers in X509 certificates is
3551 x500UniqueIdentifier, not uniqueIdentifier.
3552 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3555 *) Add an "init" command to the ENGINE config module and auto initialize
3556 ENGINEs. Without any "init" command the ENGINE will be initialized
3557 after all ctrl commands have been executed on it. If init=1 the
3558 ENGINE is initailized at that point (ctrls before that point are run
3559 on the uninitialized ENGINE and after on the initialized one). If
3560 init=0 then the ENGINE will not be iniatialized at all.
3563 *) Fix the 'app_verify_callback' interface so that the user-defined
3564 argument is actually passed to the callback: In the
3565 SSL_CTX_set_cert_verify_callback() prototype, the callback
3566 declaration has been changed from
3569 int (*cb)(X509_STORE_CTX *,void *);
3570 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3571 i=s->ctx->app_verify_callback(&ctx)
3572 has been changed into
3573 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3575 To update applications using SSL_CTX_set_cert_verify_callback(),
3576 a dummy argument can be added to their callback functions.
3577 [D. K. Smetters <smetters@parc.xerox.com>]
3579 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3580 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3582 *) Add and OPENSSL_LOAD_CONF define which will cause
3583 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3584 This allows older applications to transparently support certain
3585 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3586 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3587 load the config file and OPENSSL_add_all_algorithms_conf() which will
3588 always load it have also been added.
3591 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3592 Adjust NIDs and EVP layer.
3593 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3595 *) Config modules support in openssl utility.
3597 Most commands now load modules from the config file,
3598 though in a few (such as version) this isn't done
3599 because it couldn't be used for anything.
3601 In the case of ca and req the config file used is
3602 the same as the utility itself: that is the -config
3603 command line option can be used to specify an
3607 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3608 use "openssl_conf" if filename is NULL use default openssl config file.
3611 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3612 config section name. Add a new flag to tolerate a missing config file
3613 and move code to CONF_modules_load_file().
3616 *) Support for crypto accelerator cards from Accelerated Encryption
3617 Processing, www.aep.ie. (Use engine 'aep')
3618 The support was copied from 0.9.6c [engine] and adapted/corrected
3619 to work with the new engine framework.
3620 [AEP Inc. and Richard Levitte]
3622 *) Support for SureWare crypto accelerator cards from Baltimore
3623 Technologies. (Use engine 'sureware')
3624 The support was copied from 0.9.6c [engine] and adapted
3625 to work with the new engine framework.
3628 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3629 make the newer ENGINE framework commands for the CHIL engine work.
3630 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3632 *) Make it possible to produce shared libraries on ReliantUNIX.
3633 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3635 *) Add the configuration target debug-linux-ppro.
3636 Make 'openssl rsa' use the general key loading routines
3637 implemented in apps.c, and make those routines able to
3638 handle the key format FORMAT_NETSCAPE and the variant
3640 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3642 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3643 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3645 *) Add -keyform to rsautl, and document -engine.
3646 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3648 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3649 BIO_R_NO_SUCH_FILE error code rather than the generic
3650 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3653 *) Add new functions
3655 ERR_peek_last_error_line
3656 ERR_peek_last_error_line_data.
3657 These are similar to
3660 ERR_peek_error_line_data,
3661 but report on the latest error recorded rather than the first one
3662 still in the error queue.
3663 [Ben Laurie, Bodo Moeller]
3665 *) default_algorithms option in ENGINE config module. This allows things
3667 default_algorithms = ALL
3668 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3671 *) Prelminary ENGINE config module.
3674 *) New experimental application configuration code.
3677 *) Change the AES code to follow the same name structure as all other
3678 symmetric ciphers, and behave the same way. Move everything to
3679 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3680 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3682 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3683 [Ben Laurie and Theo de Raadt]
3685 *) Add option to output public keys in req command.
3686 [Massimiliano Pala madwolf@openca.org]
3688 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3689 (up to about 10% better than before for P-192 and P-224).
3692 *) New functions/macros
3694 SSL_CTX_set_msg_callback(ctx, cb)
3695 SSL_CTX_set_msg_callback_arg(ctx, arg)
3696 SSL_set_msg_callback(ssl, cb)
3697 SSL_set_msg_callback_arg(ssl, arg)
3699 to request calling a callback function
3701 void cb(int write_p, int version, int content_type,
3702 const void *buf, size_t len, SSL *ssl, void *arg)
3704 whenever a protocol message has been completely received
3705 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3706 protocol version according to which the SSL library interprets
3707 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3708 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3709 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3710 specification (change_cipher_spec(20), alert(21), handshake(22)).
3711 'buf' and 'len' point to the actual message, 'ssl' to the
3712 SSL object, and 'arg' is the application-defined value set by
3713 SSL[_CTX]_set_msg_callback_arg().
3715 'openssl s_client' and 'openssl s_server' have new '-msg' options
3716 to enable a callback that displays all protocol messages.
3719 *) Change the shared library support so shared libraries are built as
3720 soon as the corresponding static library is finished, and thereby get
3721 openssl and the test programs linked against the shared library.
3722 This still only happens when the keyword "shard" has been given to
3723 the configuration scripts.
3725 NOTE: shared library support is still an experimental thing, and
3726 backward binary compatibility is still not guaranteed.
3727 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3729 *) Add support for Subject Information Access extension.
3730 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3732 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3733 additional bytes when new memory had to be allocated, not just
3734 when reusing an existing buffer.
3737 *) New command line and configuration option 'utf8' for the req command.
3738 This allows field values to be specified as UTF8 strings.
3741 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3742 runs for the former and machine-readable output for the latter.
3745 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3746 of the e-mail address in the DN (i.e., it will go into a certificate
3747 extension only). The new configuration file option 'email_in_dn = no'
3748 has the same effect.
3749 [Massimiliano Pala madwolf@openca.org]
3751 *) Change all functions with names starting with des_ to be starting
3752 with DES_ instead. Add wrappers that are compatible with libdes,
3753 but are named _ossl_old_des_*. Finally, add macros that map the
3754 des_* symbols to the corresponding _ossl_old_des_* if libdes
3755 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3756 desired, the des_* symbols will be mapped to DES_*, with one
3759 Since we provide two compatibility mappings, the user needs to
3760 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3761 compatibility is desired. The default (i.e., when that macro
3762 isn't defined) is OpenSSL 0.9.6c compatibility.
3764 There are also macros that enable and disable the support of old
3765 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3766 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3767 are defined, the default will apply: to support the old des routines.
3769 In either case, one must include openssl/des.h to get the correct
3770 definitions. Do not try to just include openssl/des_old.h, that
3773 NOTE: This is a major break of an old API into a new one. Software
3774 authors are encouraged to switch to the DES_ style functions. Some
3775 time in the future, des_old.h and the libdes compatibility functions
3776 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3777 default), and then completely removed.
3780 *) Test for certificates which contain unsupported critical extensions.
3781 If such a certificate is found during a verify operation it is
3782 rejected by default: this behaviour can be overridden by either
3783 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3784 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3785 X509_supported_extension() has also been added which returns 1 if a
3786 particular extension is supported.
3789 *) Modify the behaviour of EVP cipher functions in similar way to digests
3790 to retain compatibility with existing code.
3793 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3794 compatibility with existing code. In particular the 'ctx' parameter does
3795 not have to be to be initialized before the call to EVP_DigestInit() and
3796 it is tidied up after a call to EVP_DigestFinal(). New function
3797 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3798 EVP_MD_CTX_copy() changed to not require the destination to be
3799 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3800 requires the destination to be valid.
3802 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3803 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3806 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3807 so that complete 'Handshake' protocol structures are kept in memory
3808 instead of overwriting 'msg_type' and 'length' with 'body' data.
3811 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3812 [Massimo Santin via Richard Levitte]
3814 *) Major restructuring to the underlying ENGINE code. This includes
3815 reduction of linker bloat, separation of pure "ENGINE" manipulation
3816 (initialisation, etc) from functionality dealing with implementations
3817 of specific crypto iterfaces. This change also introduces integrated
3818 support for symmetric ciphers and digest implementations - so ENGINEs
3819 can now accelerate these by providing EVP_CIPHER and EVP_MD
3820 implementations of their own. This is detailed in crypto/engine/README
3821 as it couldn't be adequately described here. However, there are a few
3822 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3823 were changed in the original introduction of ENGINE code have now
3824 reverted back - the hooking from this code to ENGINE is now a good
3825 deal more passive and at run-time, operations deal directly with
3826 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3827 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3828 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3829 they were not being used by the framework as there is no concept of a
3830 BIGNUM_METHOD and they could not be generalised to the new
3831 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3832 ENGINE_cpy() has been removed as it cannot be consistently defined in
3836 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3839 *) Change mkdef.pl to sort symbols that get the same entry number,
3840 and make sure the automatically generated functions ERR_load_*
3841 become part of libeay.num as well.
3844 *) New function SSL_renegotiate_pending(). This returns true once
3845 renegotiation has been requested (either SSL_renegotiate() call
3846 or HelloRequest/ClientHello receveived from the peer) and becomes
3847 false once a handshake has been completed.
3848 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3849 sends a HelloRequest, but does not ensure that a handshake takes
3850 place. SSL_renegotiate_pending() is useful for checking if the
3851 client has followed the request.)
3854 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3855 By default, clients may request session resumption even during
3856 renegotiation (if session ID contexts permit); with this option,
3857 session resumption is possible only in the first handshake.
3859 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3860 more bits available for options that should not be part of
3861 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3864 *) Add some demos for certificate and certificate request creation.
3867 *) Make maximum certificate chain size accepted from the peer application
3868 settable (SSL*_get/set_max_cert_list()), as proposed by
3869 "Douglas E. Engert" <deengert@anl.gov>.
3872 *) Add support for shared libraries for Unixware-7
3873 (Boyd Lynn Gerber <gerberb@zenez.com>).
3876 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3877 be done prior to destruction. Use this to unload error strings from
3878 ENGINEs that load their own error strings. NB: This adds two new API
3879 functions to "get" and "set" this destroy handler in an ENGINE.
3882 *) Alter all existing ENGINE implementations (except "openssl" and
3883 "openbsd") to dynamically instantiate their own error strings. This
3884 makes them more flexible to be built both as statically-linked ENGINEs
3885 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3886 Also, add stub code to each that makes building them as self-contained
3887 shared-libraries easier (see README.ENGINE).
3890 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3891 implementations into applications that are completely implemented in
3892 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3893 commands that can be used to configure what shared-library to load and
3894 to control aspects of the way it is handled. Also, made an update to
3895 the README.ENGINE file that brings its information up-to-date and
3896 provides some information and instructions on the "dynamic" ENGINE
3897 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3900 *) Make it possible to unload ranges of ERR strings with a new
3901 "ERR_unload_strings" function.
3904 *) Add a copy() function to EVP_MD.
3907 *) Make EVP_MD routines take a context pointer instead of just the
3908 md_data void pointer.
3911 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3912 that the digest can only process a single chunk of data
3913 (typically because it is provided by a piece of
3914 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3915 is only going to provide a single chunk of data, and hence the
3916 framework needn't accumulate the data for oneshot drivers.
3919 *) As with "ERR", make it possible to replace the underlying "ex_data"
3920 functions. This change also alters the storage and management of global
3921 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3922 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3923 index counters. The API functions that use this state have been changed
3924 to take a "class_index" rather than pointers to the class's local STACK
3925 and counter, and there is now an API function to dynamically create new
3926 classes. This centralisation allows us to (a) plug a lot of the
3927 thread-safety problems that existed, and (b) makes it possible to clean
3928 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3929 such data would previously have always leaked in application code and
3930 workarounds were in place to make the memory debugging turn a blind eye
3931 to it. Application code that doesn't use this new function will still
3932 leak as before, but their memory debugging output will announce it now
3933 rather than letting it slide.
3935 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3936 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3937 has a return value to indicate success or failure.
3940 *) Make it possible to replace the underlying "ERR" functions such that the
3941 global state (2 LHASH tables and 2 locks) is only used by the "default"
3942 implementation. This change also adds two functions to "get" and "set"
3943 the implementation prior to it being automatically set the first time
3944 any other ERR function takes place. Ie. an application can call "get",
3945 pass the return value to a module it has just loaded, and that module
3946 can call its own "set" function using that value. This means the
3947 module's "ERR" operations will use (and modify) the error state in the
3948 application and not in its own statically linked copy of OpenSSL code.
3951 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3952 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3953 the operation, and provides a more encapsulated way for external code
3954 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3955 to use these functions rather than manually incrementing the counts.
3957 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3960 *) Add EVP test program.
3963 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3966 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3967 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3968 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3969 These allow a CRL to be built without having to access X509_CRL fields
3970 directly. Modify 'ca' application to use new functions.
3973 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3974 bug workarounds. Rollback attack detection is a security feature.
3975 The problem will only arise on OpenSSL servers when TLSv1 is not
3976 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
3977 Software authors not wanting to support TLSv1 will have special reasons
3978 for their choice and can explicitly enable this option.
3979 [Bodo Moeller, Lutz Jaenicke]
3981 *) Rationalise EVP so it can be extended: don't include a union of
3982 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
3983 (similar to those existing for EVP_CIPHER_CTX).
3988 EVP_MD_CTX_init(&md); /* new function call */
3989 EVP_DigestInit(&md, EVP_sha1());
3990 EVP_DigestUpdate(&md, in, len);
3991 EVP_DigestFinal(&md, out, NULL);
3992 EVP_MD_CTX_cleanup(&md); /* new function call */
3996 *) Make DES key schedule conform to the usual scheme, as well as
3997 correcting its structure. This means that calls to DES functions
3998 now have to pass a pointer to a des_key_schedule instead of a
3999 plain des_key_schedule (which was actually always a pointer
4002 des_key_schedule ks;
4004 des_set_key_checked(..., &ks);
4005 des_ncbc_encrypt(..., &ks, ...);
4007 (Note that a later change renames 'des_...' into 'DES_...'.)
4010 *) Initial reduction of linker bloat: the use of some functions, such as
4011 PEM causes large amounts of unused functions to be linked in due to
4012 poor organisation. For example pem_all.c contains every PEM function
4013 which has a knock on effect of linking in large amounts of (unused)
4014 ASN1 code. Grouping together similar functions and splitting unrelated
4015 functions prevents this.
4018 *) Cleanup of EVP macros.
4021 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
4022 correct _ecb suffix.
4025 *) Add initial OCSP responder support to ocsp application. The
4026 revocation information is handled using the text based index
4027 use by the ca application. The responder can either handle
4028 requests generated internally, supplied in files (for example
4029 via a CGI script) or using an internal minimal server.
4032 *) Add configuration choices to get zlib compression for TLS.
4035 *) Changes to Kerberos SSL for RFC 2712 compliance:
4036 1. Implemented real KerberosWrapper, instead of just using
4037 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
4038 2. Implemented optional authenticator field of KerberosWrapper.
4040 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
4041 and authenticator structs; see crypto/krb5/.
4043 Generalized Kerberos calls to support multiple Kerberos libraries.
4044 [Vern Staats <staatsvr@asc.hpc.mil>,
4045 Jeffrey Altman <jaltman@columbia.edu>
4046 via Richard Levitte]
4048 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
4049 already does with RSA. testdsa.h now has 'priv_key/pub_key'
4050 values for each of the key sizes rather than having just
4051 parameters (and 'speed' generating keys each time).
4054 *) Speed up EVP routines.
4057 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
4058 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
4059 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
4060 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
4062 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
4063 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
4064 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
4067 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
4069 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
4072 *) Added the OS2-EMX target.
4073 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
4075 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
4076 to support NCONF routines in extension code. New function CONF_set_nconf()
4077 to allow functions which take an NCONF to also handle the old LHASH
4078 structure: this means that the old CONF compatible routines can be
4079 retained (in particular wrt extensions) without having to duplicate the
4080 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
4083 *) Enhance the general user interface with mechanisms for inner control
4084 and with possibilities to have yes/no kind of prompts.
4087 *) Change all calls to low level digest routines in the library and
4088 applications to use EVP. Add missing calls to HMAC_cleanup() and
4089 don't assume HMAC_CTX can be copied using memcpy().
4090 [Verdon Walker <VWalker@novell.com>, Steve Henson]
4092 *) Add the possibility to control engines through control names but with
4093 arbitrary arguments instead of just a string.
4094 Change the key loaders to take a UI_METHOD instead of a callback
4095 function pointer. NOTE: this breaks binary compatibility with earlier
4096 versions of OpenSSL [engine].
4097 Adapt the nCipher code for these new conditions and add a card insertion
4101 *) Enhance the general user interface with mechanisms to better support
4102 dialog box interfaces, application-defined prompts, the possibility
4103 to use defaults (for example default passwords from somewhere else)
4104 and interrupts/cancellations.
4107 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
4108 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
4111 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
4112 tidy up some unnecessarily weird code in 'sk_new()').
4113 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
4115 *) Change the key loading routines for ENGINEs to use the same kind
4116 callback (pem_password_cb) as all other routines that need this
4120 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
4121 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
4122 than this minimum value is recommended.
4125 *) New random seeder for OpenVMS, using the system process statistics
4126 that are easily reachable.
4129 *) Windows apparently can't transparently handle global
4130 variables defined in DLLs. Initialisations such as:
4132 const ASN1_ITEM *it = &ASN1_INTEGER_it;
4134 wont compile. This is used by the any applications that need to
4135 declare their own ASN1 modules. This was fixed by adding the option
4136 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
4137 needed for static libraries under Win32.
4140 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
4141 setting of purpose and trust fields. New X509_STORE trust and
4142 purpose functions and tidy up setting in other SSL functions.
4145 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
4146 structure. These are inherited by X509_STORE_CTX when it is
4147 initialised. This allows various defaults to be set in the
4148 X509_STORE structure (such as flags for CRL checking and custom
4149 purpose or trust settings) for functions which only use X509_STORE_CTX
4150 internally such as S/MIME.
4152 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
4153 trust settings if they are not set in X509_STORE. This allows X509_STORE
4154 purposes and trust (in S/MIME for example) to override any set by default.
4156 Add command line options for CRL checking to smime, s_client and s_server
4160 *) Initial CRL based revocation checking. If the CRL checking flag(s)
4161 are set then the CRL is looked up in the X509_STORE structure and
4162 its validity and signature checked, then if the certificate is found
4163 in the CRL the verify fails with a revoked error.
4165 Various new CRL related callbacks added to X509_STORE_CTX structure.
4167 Command line options added to 'verify' application to support this.
4169 This needs some additional work, such as being able to handle multiple
4170 CRLs with different times, extension based lookup (rather than just
4171 by subject name) and ultimately more complete V2 CRL extension
4175 *) Add a general user interface API (crypto/ui/). This is designed
4176 to replace things like des_read_password and friends (backward
4177 compatibility functions using this new API are provided).
4178 The purpose is to remove prompting functions from the DES code
4179 section as well as provide for prompting through dialog boxes in
4180 a window system and the like.
4183 *) Add "ex_data" support to ENGINE so implementations can add state at a
4184 per-structure level rather than having to store it globally.
4187 *) Make it possible for ENGINE structures to be copied when retrieved by
4188 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
4189 This causes the "original" ENGINE structure to act like a template,
4190 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
4191 operational state can be localised to each ENGINE structure, despite the
4192 fact they all share the same "methods". New ENGINE structures returned in
4193 this case have no functional references and the return value is the single
4194 structural reference. This matches the single structural reference returned
4195 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4199 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4200 needs to match any other type at all we need to manually clear the
4204 *) Changes to the "openssl engine" utility to include;
4205 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4206 about an ENGINE's available control commands.
4207 - executing control commands from command line arguments using the
4208 '-pre' and '-post' switches. '-post' is only used if '-t' is
4209 specified and the ENGINE is successfully initialised. The syntax for
4210 the individual commands are colon-separated, for example;
4211 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4214 *) New dynamic control command support for ENGINEs. ENGINEs can now
4215 declare their own commands (numbers), names (strings), descriptions,
4216 and input types for run-time discovery by calling applications. A
4217 subset of these commands are implicitly classed as "executable"
4218 depending on their input type, and only these can be invoked through
4219 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
4220 can be based on user input, config files, etc). The distinction is
4221 that "executable" commands cannot return anything other than a boolean
4222 result and can only support numeric or string input, whereas some
4223 discoverable commands may only be for direct use through
4224 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
4225 pointers, or other custom uses. The "executable" commands are to
4226 support parameterisations of ENGINE behaviour that can be
4227 unambiguously defined by ENGINEs and used consistently across any
4228 OpenSSL-based application. Commands have been added to all the
4229 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
4230 control over shared-library paths without source code alterations.
4233 *) Changed all ENGINE implementations to dynamically allocate their
4234 ENGINEs rather than declaring them statically. Apart from this being
4235 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
4236 this also allows the implementations to compile without using the
4237 internal engine_int.h header.
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